DE102015221339B4 - Housing of a traction battery of an electrically driven vehicle, housing upper shell for such a housing, traction battery with such a housing, electrically driven vehicle with such a traction battery and method for assembling a housing of a traction battery of an electrically driven vehicle - Google Patents

Abstract

Housing (100; 140; 180) of a traction battery (200; 240; 280) of an electrically driven vehicle, comprising
• a housing base (101) designed in particular like a tub,
◯ which is designed to receive at least one battery module (201) of the traction battery (200; 240; 280) and
◯ in which a traction battery connection unit (204) is arranged,
• a housing upper shell (102; 142; 182) which is designed in particular like a hood and has at least
◯ a traction plug (216) and a traction cable harness (211) for connecting the traction plug (216) to traction connections (206, 207) of the traction battery connection unit (204),
◯ optionally an on-board power supply plug (221) and an on-board power supply cable harness (219) for connecting the on-board power supply plug (221) to on-board power supply connections (208) of the traction battery connection unit (204),
◯ optionally a charging plug (241) and a charging cable harness (242) for connecting the charging plug (241) to charging connections (206a, 207a) of the traction battery connection unit (204),
◯ for the charging plug (241) optionally a switching device (281) for connecting or disconnecting the charging plug (241) and the charging cable harness (242),
◯ to the switching device (281) optionally a measuring line strand (285) at least for transmitting a measured value of a charging voltage at the charging plug (241),
• a mounting interface (222) in which all electrical connections between the terminals of the traction battery connection unit (204) and the housing upper shell (102; 142; 182) are made, the mounting interface (222) comprising:
• a first adapter part (225) connected to the traction battery connection unit (204) and/or guided in the traction battery connection unit (204), in which the traction connections (206, 207), the charging connections (206a, 207a) and optionally the on-board network connections (208) and/or the measuring connections (209) are contained and/or guided, and
• a second adapter part (226) which is connected to the housing upper shell (102; 142; 182) and/or guided in the housing upper shell (102; 142; 182), in which connection elements (214, 215; 220; 223) of the traction cable harness (211), the charging cable harness (242) and optionally of the on-board network cable harness (219) and/or the measuring cable harness (285) are contained and/or guided, wherein the first and the second adapter part (225, 226) are brought together in a form-fitting manner in an assembly direction and engage one another, in which the housing upper shell (102; 142; 182) and the housing lower shell (101) are also brought together to form the housing (100; 140; 180).

Description

The invention relates to a housing for a traction battery of an electrically powered vehicle. The invention further relates to a housing lower shell and a housing upper shell for such a housing, as well as to a traction battery having such a housing and an electrically powered vehicle having such a traction battery. Furthermore, the invention relates to a method for assembling a housing for a traction battery of an electrically powered vehicle.

From the DE 10 2013 009 713 A1 A cable duct is known which is designed in such a way that it is suitable and usable for the voltages and currents occurring in hybrid and electric vehicles and is also inexpensive to manufacture with a low weight. The document also shows a battery pack, in particular for hybrid and electric vehicles, with such a cable duct. This cable duct has a material density of between 10 and 500 kilograms per cubic meter, at least two separate cable guides, each designed to accommodate at least one electrical line, and holding elements designed to fix the electrical lines in the respective cable guide, wherein at least one of the electrical lines is designed for a voltage of more than 60 V and wherein at least one of the electrical lines is designed for a current of more than 10 A. Furthermore, the cable duct has a width of 3 cm to 100 cm, a length of 25 cm to 500 cm, a height of 2 cm to 50 cm and a weight of 30 g to 3000 g.

In the older DE 10 2015 201 881 A1 An electrical connection device for a housing element of a housing of an internal electrical device arranged in the housing, in particular a traction battery, preferably for an electrically operated, preferably drivable, vehicle is described. The connection device comprises at least one external electrical connection element arranged on the housing element for connecting at least one supply line of the internal electrical device to at least one external electrical device arranged outside the housing. For this purpose, at least one line harness electrically connected on one side to the at least one external electrical connection element and at least one connection element connected to the at least one line harness on the other side are provided for connecting the at least one supply line of the internal electrical device to it. The at least one external electrical connection element, the at least one line harness, and the at least one connection element are fixedly arranged on the housing element. The at least one connection element is arranged on an inner side of the housing element in the region of at least one mounting opening in the housing element, accessible from an outer side of the housing.

In the older DE 10 2015 201 881 A1 Also mentioned are a housing with such a housing element, an internal electrical device, in particular a traction battery, preferably for an electrically operable, preferably drivable, vehicle, with such a housing, and an electrically operable, preferably drivable, vehicle with such an internal electrical device.

The older DE 10 2015 201 881 A1 shows in particular a housing for a traction battery, formed from a hood-like housing element, a trough-like housing lower shell, and a supporting frame. The electrical connection device comprises, as a first external electrical connection element arranged on the housing element, a charging plug for connecting to a first external electrical device designed as a battery charging device. Furthermore, the electrical connection device comprises, as a second external electrical connection element likewise arranged on the housing element, a traction plug for connecting to a second external electrical device designed as a traction device. The charging plug and traction plug are designed as high-voltage plugs. The electrical connection device also comprises, as a third external electrical connection element arranged on the housing element, an on-board power supply plug for connecting to a third external electrical device forming an on-board power supply of the vehicle.

The older DE 10 2015 201 881 A1 further shows that a mounting opening is provided in the wall of the housing element. Behind the mounting opening in the space enclosed by the housing element, a number of connection elements are arranged, which are accessible through the mounting opening from an outside of the housing. Connection elements provided for connecting the charging plug and the traction plug are combined into a common component with electrically conductive contact elements to the charging plug and the traction plug, as well as with a common contact-protected connection housing. A further connection element is provided for connecting the vehicle electrical system plug. The connection elements are designed for connecting a supply line in a traction battery connection housing, abbreviated to: BJB. The BJB also comprises, among other things, switching devices, in particular Contactors for switching the traction battery on and off.

The production of traction batteries used in the older DE 10 2015 201 881 A1 The type shown, particularly for electrically operated, preferably powered, vehicles is subject to high cost pressure. Therefore, the aim is to achieve the most efficient mass production possible. This requires simple and safe work steps that can be automated wherever possible, as well as easy and safe testing in order to ensure the highest possible production quality. In the case of traction batteries, an additional complicating factor is that battery modules or battery cells are installed there which are already subject to an electrical voltage during production of the traction batteries. This voltage usually adds up to several hundred volts when all the battery modules or battery cells of a traction battery are connected together before the housing is closed. This represents a considerable source of danger in production, particularly during assembly of the housing.

The US 2013 / 0 037 336 A1 discloses a battery system for use in a vehicle. The battery system includes a tray having a plurality of battery containers. A plurality of batteries are also provided, each of the plurality of batteries being received in a battery receptacle. A conductive layer in electrical communication with the plurality of batteries and a terminal for electrically coupling to a vehicle are also provided in the battery system. A lid is locked to the receptacle. The lid contains a computer and an identification system for the plurality of batteries. A housing for a battery system and a vehicle having a battery system are also disclosed.

In the DE 10 2013 220 119 A1 A battery housing is described, comprising a base housing configured to accommodate at least one battery cell, a housing cover configured to be connected to the base housing, and battery electronics, wherein the battery electronics are mounted on an inner side of the housing cover. Furthermore, a battery and a method for assembling a battery are described.

The invention accordingly has the object of further simplifying the manufacture of a traction battery of the type described above, in particular the manufacture or assembly of a housing for such a traction battery with a hood-like shaped housing element and a trough-like housing lower shell, and of making it safer and more cost-effective, in particular of designing the housing in such a way that simplifications and cost savings are achieved and occupational safety is increased.

• • eine insbesondere wannenartig gestaltete Gehäuseunterschale,
  • ◯ die zum Aufnehmen wenigstens eines Batteriemoduls der Traktionsbatterie eingerichtet ist und
  • ◯ in der eine Traktionsbatterie-Anschlusseinheit angeordnet ist,
• • eine insbesondere haubenartig gestaltete Gehäuseoberschale wenigstens mit
  • ◯ einem Traktionsstecker und einem Traktions-Leitungsstrang zum Verbinden des Traktionssteckers mit Traktionsanschlüssen der Traktionsbatterie-Anschlusseinheit,
  • ◯ optional einem Bordnetzstecker und einem Bordnetz-Leitungsstrang zum Verbinden des Bordnetzsteckers mit Bordnetzanschlüssen der Traktionsbatterie-Anschlusseinheit,
  • ◯ optional einem Ladestecker und einem Lade-Leitungsstrang zum Verbinden des Ladesteckers mit Ladeanschlüssen der Traktionsbatterie-Anschlusseinheit,
  • ◯ zum Ladestecker optional einer Schalteinrichtung zum Verbinden oder Trennen von Ladestecker und Lade-Leitungsstrang,
  • ◯ zur Schalteinrichtung optional einem Messleitungsstrang wenigstens zum Übertragen eines Messwertes einer Ladespannung am Ladestecker,
• • eine Montageschnittstelle, in der alle elektrischen Verbindungen zwischen den Anschlüssen der Traktionsbatterie-Anschlusseinheit und der Gehäuseoberschale hergestellt sind.

According to the invention, this object is achieved by a housing of a traction battery of an electrically driven vehicle, comprising

• • a particularly tub-like housing base,
  • ◯ which is designed to accommodate at least one battery module of the traction battery and
  • ◯ in which a traction battery connection unit is arranged,
• • a housing upper shell, particularly designed like a hood, with at least
  • ◯ a traction plug and a traction cable harness for connecting the traction plug to traction terminals of the traction battery connection unit,
  • ◯ optionally an on-board power supply plug and an on-board power supply cable harness for connecting the on-board power supply plug to the on-board power supply connections of the traction battery connection unit,
  • ◯ optionally a charging plug and a charging cable harness for connecting the charging plug to the charging connections of the traction battery connection unit,
  • ◯ optionally a switching device for connecting or disconnecting the charging plug and the charging cable harness,
  • ◯ for the switching device optionally a measuring cable harness at least for transmitting a measured value of a charging voltage at the charging plug,
• • a mounting interface in which all electrical connections between the terminals of the traction battery connection unit and the housing upper shell are made.

Preferably, the housing lower shell, which is in particular designed like a trough, and the housing upper shell, which is in particular designed like a hood, form an all-round sealed, in particular hermetically sealed, housing in the assembled, i.e., assembled, interconnected manufacturing state. This housing is preferably designed to be gas-tight and/or liquid-tight in order to protect the traction battery as best as possible against environmental influences during operation of the vehicle. In the intended installation position in the vehicle, the housing lower shell faces the underside of the vehicle, and the housing upper shell faces the top side. At least one or more battery modules - hereinafter referred to simply as the Bat battery modules - as well as the traction battery connection unit, which is also referred to as a "battery junction box", or BJB for short, and in which all connections of the battery modules are brought together for connecting the battery modules to at least one external electrical device arranged outside the housing, which can include, for example, a traction motor, i.e., an electrical machine, a battery charging device, and/or electrical control devices of the vehicle. The traction battery connection unit can also contain control devices, in particular for operating the traction battery.

According to the invention, the battery modules are connected to the external electrical device arranged outside the housing via the traction battery connection unit, in particular exclusively via this. For this purpose, the traction battery connection unit has traction connections and optionally additional on-board power supply connections and optionally additional charging connections, wherein the charging connections can coincide with the traction connections in one embodiment. Preferably, both traction connections and on-board power supply connections and charging connections are generally provided, regardless of whether or not they are actually connected to an external electrical device in different versions of the traction battery. This standardizes the traction battery connection unit and thus the assembly comprising the housing bottom shell, the battery modules and the traction battery connection unit, thus simplifying and reducing costs in production and warehousing.

According to the invention, the housing upper shell, which is particularly hood-shaped, is further equipped with the traction connector and the traction cable harness for connecting the traction connector to the traction connections of the traction battery connection unit, in particular for connecting the traction motor to the traction connector and thus to the traction battery. This configuration of the housing upper shell forms a kind of basic configuration, based on which different variants of the housing upper shell design are provided through the optional fitting of additional elements.

In a first variant, the housing upper shell is further formed with an on-board power supply plug and an on-board power supply cable harness for connecting the on-board power supply plug to the on-board power supply connections of the traction battery connection unit, wherein an on-board power supply of the vehicle encompassed by the external electrical device arranged outside the housing can be connected to the on-board power supply plug.

In a further variant, the housing upper shell is further configured with a charging plug and a charging cable harness for connecting the charging plug to the charging terminals of the traction battery connection unit, wherein a battery charging device encompassed by or forming an external electrical device arranged outside the housing can be connected to the charging plug. In a modification, the charging terminals can coincide with the traction terminals, and the charging cable harness can coincide with the traction cable harness, i.e., the traction plug also serves as a charging plug.

If the housing's top shell is equipped with a separate charging plug with charging cable harness, a further variant of the charging plug optionally provides a switching device for connecting or disconnecting the charging plug to or from the charging cable harness. This allows the battery charging device to be optionally deactivated or, as desired, the connection to the battery charging device can be established only in certain operating situations. For example, such a connection can only be established when a sufficient charging voltage is present at the charging plug.

If such a switching device is optionally provided for connecting or disconnecting the charging plug with or from the charging cable harness, a measuring cable harness can optionally be arranged on the upper housing shell for this switching device, which measuring cable harness serves to transmit a measured value of a charging voltage at the charging plug, wherein this measured value is preferably transmitted to the traction battery connection unit and the switching device can be controlled in the aforementioned manner according to this measured value.

In the mounting interface finally provided according to the invention, all electrical connections between the connections of the traction battery connection unit and the housing upper shell are established. Thus, the traction wiring harness is connected to the traction connections of the traction battery connection unit in the mounting interface. Furthermore, depending on the variant provided according to the invention, a connection of the on-board electrical system wiring harness to the on-board electrical system connections of the traction battery connection unit and/or a connection of the charging wiring harness to the charging connections of the traction battery connection unit and/or a connection of the measuring wiring harness to measuring line connections of the traction battery connection unit is formed there.

Finally, in a preferred embodiment, a connection of at least one pilot line with pilot line terminals is provided in the mounting interface. connections of the traction battery connection unit and/or a connection of control lines for controlling the switching device with control line connections of the traction battery connection unit, wherein the at least one pilot line serves to detect a connection state of at least the charging plug and/or the traction plug and to transmit at least one related pilot signal to the traction battery connection unit.

• • eine sogenannten „AC-Variante“, die lediglich den Traktionsstecker mit dem Traktions-Leitungsstrang in der Gehäuseoberschale aufweist, dazu optional den Bordnetzstecker mit dem Bordnetz-Leitungsstrang und/oder eine Pilotleitung zum Traktionsstecker,
• • eine sogenannte „DC-Variante“, die den Traktionsstecker mit dem Traktions-Leitungsstrang sowie den Ladestecker mit dem Lade-Leitungsstrang in der Gehäuseoberschale aufweist, dazu optional wieder den Bordnetzstecker mit dem Bordnetz-Leitungsstrang und/oder wenigstens eine, bevorzugt je eine Pilotleitung zum Traktionsstecker und zum Ladestecker, und
• • eine sogenannte „DC-Variante mit Schützen“, die den Traktionsstecker mit dem Traktions-Leitungsstrang, den Ladestecker mit dem Lade-Leitungsstrang sowie die Schalteinrichtung zum Verbinden oder Trennen von Ladestecker und Lade-Leitungsstrang in der Gehäuseoberschale aufweist, dazu optional wieder den Bordnetzstecker mit dem Bordnetz-Leitungsstrang und/oder wenigstens eine, bevorzugt je eine Pilotleitung zum Traktionsstecker und zum Ladestecker und/oder zur Schalteinrichtung optional den Messleitungsstrang.

The inventive distribution of the above-described structural elements, namely the battery modules and the traction battery connection unit on the lower housing shell on the one hand, and the traction plug with the traction wiring harness, the on-board power supply plug with the on-board power supply harness, the charging plug with the charging wiring harness and the switching device, the measuring wiring harness, the at least one pilot line and the control lines on the upper housing shell on the other hand, as well as the formation of all electrical connections between the connections of the traction battery connection unit and the upper housing shell in a single, common assembly interface, enables simplified production and storage, since fewer differently designed assemblies need to be manufactured and maintained to produce different variants in the equipment of the traction battery. Preferably, three variants of the traction battery are provided, namely

• • a so-called “AC variant”, which only has the traction plug with the traction cable harness in the upper housing shell, plus optionally the on-board power supply plug with the on-board power supply harness and/or a pilot cable to the traction plug,
• • a so-called “DC variant”, which has the traction plug with the traction cable harness and the charging plug with the charging cable harness in the upper housing shell, optionally also the on-board power supply plug with the on-board power supply cable harness and/or at least one, preferably one pilot line each to the traction plug and to the charging plug, and
• • a so-called “DC variant with contactors”, which has the traction plug with the traction cable harness, the charging plug with the charging cable harness and the switching device for connecting or disconnecting the charging plug and charging cable harness in the upper housing shell, plus optionally the on-board network plug with the on-board network cable harness and/or at least one, preferably one pilot line each to the traction plug and to the charging plug and/or to the switching device, optionally the measuring cable harness.

For each of these variants, a correspondingly differently equipped housing upper shell is combined with the identically designed housing lower shell, which is always identically designed with the battery modules and the traction battery connection unit. The mounting interface according to the invention enables any combination of all differently equipped housing upper shells with the uniformly designed lower shell.

This standardization and simplification of the design of the housing and its equipment allows for the elimination or simplification of production lines for the manufacture of the traction batteries formed with them, thereby reducing costs. The design also enables simplified and improved testing of the manufactured assemblies, as the housing upper shells with the equipment arranged therein can be tested separately from the housing lower shells with the battery modules and the traction battery connection unit, making it easier to specifically test all components of this equipment individually. This makes it easier to comply with increased quality requirements; testing is also more reliable because fewer circuit elements of the traction battery overall need to be tested under voltage. The advantage of greater safety also applies to the production of the housing upper shells and their equipment.

• • ein mit der Traktionsbatterie-Anschlusseinheit verbundenes und/oder in der Traktionsbatterie-Anschlusseinheit geführtes erstes Adapterteil, in dem Traktionsanschlüsse, Ladeanschlüsse sowie optional die Bordnetzanschlüsse und/oder die Messanschlüsse enthalten und/oder geführt sind, und
• • ein mit der Gehäuseoberschale verbundenes und/oder in der Gehäuseoberschale geführtes zweites Adapterteil, in dem Anschlusselemente des Traktions-Leitungsstrangs, des Lade-Leitungsstrangs sowie optional des Bordnetz-Leitungsstrangs und/oder des Messleitungsstrangs enthalten und/oder geführt sind,

wobei das erste und das zweite Adapterteil in einer Montagerichtung formschlüssig zusammengeführt sind und ineinander fassen, in der auch Gehäuseoberschale und Gehäuseunterschale zum Bilden des Gehäuses zusammengeführt sind.According to the invention, the housing comprises the mounting interface:

• • a first adapter part connected to the traction battery connection unit and/or guided in the traction battery connection unit, in which traction connections, charging connections and optionally the on-board network connections and/or the measuring connections are contained and/or guided, and
• • a second adapter part connected to the housing upper shell and/or guided in the housing upper shell, in which connection elements of the traction cable harness, the charging cable harness and optionally the on-board network cable harness and/or the measuring cable harness are contained and/or guided,

wherein the first and the second adapter part are brought together in a form-fitting manner and engage one another in an assembly direction in which the housing upper shell and housing lower shell are also brought together to form the housing.

Advantageous embodiments of the invention are characterized in the subclaims.

The assembly direction here refers to a spatial direction of movement in which the described elements - here the first and second adapter parts or the upper housing shell and the lower housing shell with the traction battery connection unit - are moved towards one another during the assembly process for the purpose of connecting them. The assembly direction is preferably rectilinear, i.e. the described elements are moved towards one another in a rectilinear manner during the assembly process for the purpose of connecting them. In particular, this movement does not contain any rotating or pivoting movement or change in the direction of movement. The assembly direction is particularly preferably oriented in a rectilinear vertical direction, i.e. based on a conventionally spatially oriented, Cartesian coordinate system in its z-axis direction. Accordingly, bringing the described elements together during the assembly process in this assembly direction is also referred to as z-axis assembly. This z-axis assembly is characterized by particularly simple handling of the elements to be assembled. The described elements are thus designed such that their assembly can be carried out by a movement of at least one of the elements to be assembled towards one another in the assembly direction.

According to the described development of the invention, the assembly directions when joining the first and second adapter parts, on the one hand, or the housing upper shell and the housing lower shell with the traction battery connection unit, on the other hand, are advantageously identical. Preferably, the first and second adapter parts, or the housing upper shell and the housing lower shell with the traction battery connection unit, are designed or arranged such that, with a single, mutually directed movement in the assembly direction, both the housing upper shell and the housing lower shell and the first adapter part and the second adapter part are joined simultaneously.

For this purpose, according to the described development of the invention, the first adapter part is expediently connected to the traction battery connection unit and/or guided in the traction battery connection unit, and the second adapter part is furthermore connected to the housing upper shell and/or guided in the housing upper shell. The first adapter part, in turn, contains and/or guides the traction connections, the charging connections, and optionally the on-board power supply connections and/or the measuring connections, and the second adapter part contains and/or guides connection elements of the traction wiring harness, the charging wiring harness, and optionally the on-board power supply wiring harness and/or the measuring wiring harness.

In this context, the term "connected" is used to mean an at least largely rigid connection of the respective designated elements. The term "guided" here means that a guided element can be moved by a leading element and/or with the leading element in a specific direction and/or within a specific spatial area, without the need for a rigid connection. A connection and guide configured in this way has the particular property, i.e., is designed in such a way that when the leading element moves, particularly in the assembly direction, the guided element also executes the same movement within a predetermined tolerance range. With a "connection" defined in this way, the tolerance range within which the movement of the connected element is possible is smaller than with a "guide". This makes it possible with a "guide" to compensate for inaccuracies that occur in the positioning of the leading elements relative to one another during the assembly process when positioning the guided elements relative to one another, i.e., to nevertheless join the guided elements together within close tolerances.

In this embodiment, the traction battery connection unit arranged in the lower housing shell forms the guiding element for the first adapter part, which in contrast represents a guided element. Accordingly, the upper housing shell forms the guiding element for the second adapter part, which in contrast represents a guided element. The first adapter part, in turn, forms a guiding element for traction connections, charging connections, and optionally vehicle electrical system connections and/or measuring connections as elements guided in the first adapter part, and the second adapter part, in turn, forms a guiding element for connection elements of the traction wiring harness, the charging wiring harness, and optionally the vehicle electrical system wiring harness and/or the measuring wiring harness as elements guided in the second adapter part. "Guidance," for example of the first adapter part through the traction battery connection unit, is then provided, for example, by the fact that the first adapter part is arranged on the traction battery connection unit with a predetermined amount of play - transverse to or in the assembly direction. A flexible or spring-loaded connecting element between the traction battery connection unit and the first adapter part can also form a “guide” in contrast to a rigid connection.

In this way, the connection elements to be electrically connected to the designated connections, ie the traction connections with the connection elements of the traction wiring harness, the charging connections with the connection elements of the charging wiring harness and, as far as provided, the vehicle electrical system connections with the connection elements of the vehicle electrical system wiring harness and the measuring connections with the connection elements of the measuring cable harness, at the same time as the assembly process of the upper housing shell onto the lower housing shell, at least for preparing their connection to one another without additional intervention or additional handling steps, wherein the positive engagement of the adapter parts ensures precise, quick and secure alignment, i.e. positioning, of the designated connections and connection elements relative to one another. This enables a simple, safe and fast assembly process, i.e. simplified manufacture of the housing according to the invention, because the upper housing shell can be brought very easily onto the lower housing shell from above by placing it in the assembly direction, preferably in the z-axis direction, i.e. in a very simple movement, and can advantageously also be glued immediately, and with this placement at the same time the connections and connection elements for establishing the electrical connections between the upper housing shell and the lower housing shell are automatically brought together. Such a z-axis assembly is simple, fast and precise, i.e., can be carried out while maintaining small manufacturing tolerances, and is therefore also easy to automate and safe from accidents, since the probability and thus the risk of contact with elements under voltage of the battery modules is reduced.

In a further preferred embodiment of the housing according to the invention, at least some of the traction connections, the charging connections, and optionally the on-board power supply connections and/or the measuring connections are connected, on the one hand, to associated connection elements of the traction wiring harness, the charging wiring harness, and optionally the on-board power supply wiring harness and/or the measuring wiring harness, on the other hand, in a pluggable and/or screwable manner. These connections are preferably established by plugging and/or screwing in the z-axis direction. The connections can be made directly when the housing upper shell and the housing lower shell are joined together and/or following this joining in a separate assembly step. They can already be completely made during this joining, in particular carried out automatically, or can be implemented by a supplementary assembly process that includes plugging and/or screwing, wherein in the latter case, the connections and connection elements are aligned with one another when the housing upper shell and the housing lower shell are joined together in preparation for the plugging and/or screwing. Particularly preferably, the connections of the traction connections and charging connections, on the one hand, to the associated connection elements of the traction wiring harness and the charging wiring harness, on the other hand, are screwable, i.e., implemented by screws, e.g., with bolts and screw tabs. The connections of the vehicle electrical system connections and the measuring connections, on the one hand, to the associated connection elements of the vehicle electrical system wiring harness and the measuring wiring harness, on the other hand, are pluggable, i.e., implemented by plugging, e.g., with plug-in devices. In modifications, the connections of the traction connections and/or the charging connections can also be pluggable, or the connections of the vehicle electrical system connections and/or the measuring connections can be screwable.

According to another preferred embodiment of the housing according to the invention, all traction connections, charging connections, and optionally on-board power supply connections and/or measuring connections are pluggably connected to the associated connection elements of the traction wiring harness, the charging wiring harness, and optionally the on-board power supply wiring harness and/or the measuring wiring harness. This pluggable connection enables particularly fast and reliable production. In particular, all electrical connections between the housing upper shell and the housing lower shell can be formed simultaneously with the joining and bonding of the housing upper shell to the housing lower shell; thus, the aforementioned connection elements are immediately fully connected to the relevant connections of the traction battery connection unit beyond their alignment. Optionally, plugging the connections following the joining and alignment in a separate assembly step is also possible, which simultaneously enables individual checking of the connection during the assembly process, in particular by a person entrusted with production.

Furthermore, the risk of contact with live elements during assembly performed solely by plugging in is further reduced. The risk of, for example, a bolt for a screw connection getting inside the housing during the assembly process and causing malfunctions, particularly damage, through short circuits is also eliminated. These advantages even justify the potentially increased effort required to design the connections with plug-in devices.

• • ist wenigstens eine, bevorzugt eine, Montageöffnung in der Gehäuseoberschale, bevorzugt an einer Oberseite der Gehäuseoberschale, angeordnet und
• • ist die Montageschnittstelle an einer Innenseite der Gehäuseoberschale im Bereich der wenigstens einen, bevorzugt einen, Montageöffnung in der Gehäuseoberschale von einer Außenseite des Gehäuses in der Montagerichtung, in der Gehäuseoberschale und Gehäuseunterschale zum Bilden des Gehäuses zusammengeführt sind, zugreifbar angeordnet.

According to a further preferred embodiment of the housing according to the invention

• • at least one, preferably one, mounting opening is arranged in the housing upper shell, preferably on an upper side of the housing upper shell, and
• • the mounting interface is arranged on an inner side of the housing upper shell in the region of the at least one, preferably one, mounting opening in the housing upper shell from an outer side of the housing in the mounting direction in which the housing upper shell and housing lower shell are brought together to form the housing.

According to this embodiment, the housing upper shell can be configured with one or more mounting openings. However, only a single mounting opening is preferably provided in order to keep the housing upper shell as simple as possible and thus minimize manufacturing costs, also with regard to a required, possibly hermetic, sealing of the housing, which also requires a corresponding sealing of the mounting opening. The arrangement of the mounting opening on an upper side of the housing upper shell enables access through the mounting opening to the interior of the housing in the assembly direction, i.e., the z-axis direction.

In this embodiment, the mounting interface with the traction connections, the charging connections, and optionally the on-board power supply connections and/or the measuring connections, as well as the associated connection elements of the traction wiring harness, the charging wiring harness, and optionally the on-board power supply harness and/or the measuring wiring harness, is advantageously arranged within the housing in the area of, i.e., behind, the mounting opening. The mounting interface is thus accessible through the mounting opening from the outside of the housing in the mounting direction, i.e., in the z-axis direction. This allows all assembly work that still needs to be performed after the upper housing shell has been joined to the lower housing shell, in particular the establishment of the electrical connections, to be carried out unhindered in the mounting direction, i.e., the z-axis direction. For example, plug-in connections can be implemented by a plug-in movement in the mounting direction, or bolts for a screw connection can be screwed in the mounting direction. This simplifies production and also enables or facilitates automation of this assembly step, i.e. simple execution by production robots, since the simple plugging or screwing movement in the - common - assembly direction can also be carried out easily and precisely with production robots.

• • alle Anschlüsse und Anschlusselemente der Montageschnittstelle, d.h. alle Traktionsanschlüsse, Ladeanschlüsse sowie optional Bordnetzanschlüsse und/oder Messanschlüsse einerseits und alle zugehörigen Anschlusselemente des Traktions-Leitungsstrangs, des Lade-Leitungsstrangs sowie optional des Bordnetz-Leitungsstrangs und/oder des Messleitungsstrangs andererseits sind steckbar verbunden,
• • dabei sind alle Anschlüsse einerseits und alle zugehörigen Anschlusselemente andererseits in einer gemeinsamen, kombinierten Steckvorrichtung zusammengefasst angeordnet, so dass alle elektrischen Verbindungen zwischen der Gehäuseoberschale und der Gehäuseunterschale mit einem einzigen, gemeinsamen Montageschritt, d.h. Steckvorgang, in der Montagerichtung hergestellt sind, und
• • die Gehäuseoberschale weist eine Montageöffnung auf.

A particularly preferred embodiment of the housing according to the invention is characterized by a combination of the following features based on the above explanation:

• • all connections and connection elements of the mounting interface, ie all traction connections, charging connections and optional on-board network connections and/or measuring connections on the one hand and all associated connection elements of the traction wiring harness, the charging wiring harness and optionally the on-board network wiring harness and/or the measuring wiring harness on the other hand are connected in a pluggable manner,
• • all connections on the one hand and all associated connection elements on the other hand are arranged in a common, combined plug-in device, so that all electrical connections between the housing upper shell and the housing lower shell are made with a single, common assembly step, ie plugging process, in the assembly direction, and
• • The upper housing shell has a mounting opening.

The combined plug-in device preferably forms the assembly interface.

This combination of features combines the advantages of a simple design of the housing upper shell with the smallest possible number of components and sealing points with the advantages of a simple, quick, and reliable electrical connection with high manufacturing quality. Even if additional costs arise due to the common, combined connector, these are offset by the aforementioned simplifications in the design and assembly of the housing upper shell, as well as the manufacturing steps involved in assembling the housing upper shell and housing lower shell.

The above-mentioned object is further achieved by a housing upper shell for a housing of the type described above.

The above-mentioned object is also achieved by a traction battery which comprises a housing of the type described above and at least one battery module.

The above-mentioned object is also achieved by an electrically driven vehicle which is equipped with a traction battery of the type described above.

The housing lower shell, the housing upper shell, the traction battery and the vehicle of the type designed according to the invention also have the features, properties and advantages explained above for the housing according to the invention.

The described inventive design of the traction battery and its housing lower shell and housing upper shell, and in particular the modular arrangement of the traction battery elements on the housing lower shell and the housing upper shell, enables completely separate prefabrication of the housing lower shell on the one hand and the variants of the housing upper shell on the other, which are only assembled in the final production stage. This makes it possible to make production facilities for the manufacture of traction batteries even more flexible. For example, the production of the uniformly constructed housing lower shell can be outsourced to a specialized manufacturing facility; the pre-assembled housing lower shells are then supplied to the production facility for the assembly of the housing lower shell and housing upper shell. The same can also be done for the production of the housing upper shell.

• • in einem ersten Schritt werden eine Gehäuseoberschale und eine Gehäuseunterschale zum Bilden des Gehäuses in einer Montagerichtung zusammengeführt und miteinander formschlüssig verbunden, dabei werden
  • ◯ ein mit einer in der Gehäuseunterschale des Gehäuses angeordneten Traktionsbatterie-Anschlusseinheit verbundenes und/oder in der Traktionsbatterie-Anschlusseinheit geführtes erstes Adapterteil, in dem Traktionsanschlüsse, undLadeanschlüsse und optional Bordnetzanschlüsse und/oder Messanschlüsse enthalten und/oder geführt sind, und
  • ◯ ein mit der Gehäuseoberschale des Gehäuses verbundenes und/oder in der Gehäuseoberschale geführtes zweites Adapterteil, in dem Anschlusselemente eines Traktions-Leitungsstrangs, eines Lade-Leitungsstrangs und optional eines Bordnetz-Leitungsstrangs und/oder eines Messleitungsstrangs enthalten und/oder geführt sind,
  in derselben Montagerichtung formschlüssig ineinander fassend zusammengeführt, in der die Gehäuseoberschale und die Gehäuseunterschale zum Bilden des Gehäuses zusammengeführt werden;
• • in einem zweiten Schritt werden bei und/oder nach dem formschlüssig ineinander fassend Zusammenführen und dadurch mechanischen Verbinden des ersten und des zweiten Adapterteils miteinander die
  • ◯ die Traktionsanschlüsse, die Ladeanschlüsse und optional die Bordnetzanschlüsse und/oder die Messanschlüsse und die
  • ◯ Anschlusselemente des Traktions-Leitungsstrangs und des Lade-Leitungsstrangs sowie optional des Bordnetz-Leitungsstrangs und/oder des Messleitungsstrangs
  durch eine Montageöffnung in der Gehäuseoberschale in derselben Montagerichtung, in der Gehäuseoberschale und Gehäuseunterschale zum Bilden des Gehäuses zusammengeführt werden, gesteckt und/oder verschraubt und dadurch elektrisch leitend miteinander verbunden.

The above-mentioned object is finally achieved by a method for assembling a housing of a traction battery of an electrically driven vehicle, ie for assembling the housing from a housing upper shell and a housing lower shell, wherein the method according to the invention comprises the following method steps:

• • In a first step, a housing upper shell and a housing lower shell are brought together in an assembly direction to form the housing and connected to each other in a form-fitting manner,
  • ◯ a first adapter part connected to a traction battery connection unit arranged in the lower housing shell of the housing and/or guided in the traction battery connection unit, in which traction connections, charging connections and optionally on-board network connections and/or measuring connections are contained and/or guided, and
  • ◯ a second adapter part connected to the housing upper shell of the housing and/or guided in the housing upper shell, in which connection elements of a traction cable harness, a charging cable harness and optionally an on-board network cable harness and/or a measuring cable harness are contained and/or guided,
  joined together in a form-fitting manner in the same assembly direction in which the upper housing shell and the lower housing shell are joined together to form the housing;
• • In a second step, during and/or after the form-fitting joining and thereby mechanical connection of the first and second adapter parts, the
  • ◯ the traction connections, the charging connections and optionally the on-board network connections and/or the measuring connections and the
  • ◯ Connection elements of the traction wiring harness and the charging wiring harness as well as optionally the on-board network wiring harness and/or the measuring wiring harness
  through a mounting opening in the upper housing shell in the same mounting direction in which the upper housing shell and lower housing shell are brought together to form the housing, plugged and/or screwed and thereby electrically connected to one another.

• • Optional zu dem vorbeschriebenen zweiten Verfahrensschritt des Herstellens der elektrischen Verbindungen, d.h. in einer an dessen Stelle tretenden Variation, werden die
  • ◯ die Traktionsanschlüsse und die Ladeanschlüsse sowie optional dieBordnetzanschlüsse und/oder die Messanschlüsse einerseits und die
  • ◯ die Anschlusselemente des Traktions-Leitungsstrangs, des Lade-Leitungsstrangs sowie optional des Bordnetz-Leitungsstrangs und/oder des Messleitungsstrangs andererseits
  in derselben Montagerichtung, in der die Gehäuseoberschale und die Gehäuseunterschale zum Bilden des Gehäuses zusammengeführt werden, ausschließlich gesteckt und dadurch elektrisch leitend miteinander verbunden.

If, in this second step, existing plugs, in particular for the vehicle electrical system and/or measuring cable harness, are not automatically plugged or locked when the upper housing shell is brought together, in particular when it is placed on the lower housing shell and thus when the first and second adapter parts are brought together, this plugging or locking of existing plugs takes place after the electrical connections to be screwed have been screwed together, whereby in particular the traction and/or charging cable harness are screwed to the traction connections or the charging connections.

• • Optionally to the above-described second process step of establishing the electrical connections, i.e. in a variation replacing it, the
  • ◯ the traction connections and the charging connections as well as optionally the on-board network connections and/or the measuring connections on the one hand and the
  • ◯ the connection elements of the traction wiring harness, the charging wiring harness and optionally the on-board network wiring harness and/or the measuring wiring harness on the other hand
  in the same assembly direction in which the upper housing shell and the lower housing shell are brought together to form the housing, exclusively plugged in and thereby electrically connected to one another.

To carry out the second method step for the mounting interface, the mounting opening is provided in the top of the housing upper shell, and the screwing and/or plugging and/or locking in the mounting direction, in particular the z-axis direction, i.e., in the usual working position during production, from above. The first and second process steps are preferably carried out automatically, i.e., by a production robot or the like, one after the other or simultaneously, or in a temporal sequence in which the process steps overlap, with simple and thus precisely executable movements of this production robot. Finally, the assembly opening is closed, also preferably automatically and exclusively in the assembly direction. This achieves cost-effective, high-quality production.

As a prerequisite for implementing the described variation of the second process step, all cables are combined in a combined plug-in device with connections or connection elements, particularly in the form of plugs and sockets, on the upper housing shell or on the traction battery connection unit of the lower housing shell. This plug-in device, i.e., its plugs and sockets, are brought together like the first adapter part and the second adapter part when the upper housing shell is placed on the lower housing shell, e.g., using a conical guide, and are plugged and/or locked. No assembly opening is required to implement this variation of the second process step, and even with automation, the production process of the second process step is significantly simplified by reducing the assembly to a single, simple movement in the assembly direction.

• 1 ein grob schematisches Blockschaltbild eines Beispiels für eine erfindungsgemäß in einer sogenannten „AC-Variante“ gestaltete Traktionsbatterie für ein elektrisch antreibbares Fahrzeug,
• 2 ein grob schematisches Blockschaltbild einer gemäß einer sogenannten „DC-Variante“ gestalteten Abwandlung der Traktionsbatterie gemäß 1,
• 3 ein grob schematisches Blockschaltbild einer weiteren, gemäß einer sogenannten "DC-Variante mit Schützen gestalteten Abwandlung der Traktionsbatterie gemäß 1 und 2,
• 4 eine Unteransicht, d.h. Innenansicht, eines Beispiels einer Gehäuseoberschale mit darin angeordneten Elementen, insbesondere elektrischen Schaltungselementen, der Traktionsbatterie in der Ausführung der sogenannten „AC-Variante“ gemäß dem grob schematischen Blockschaltbild von 1 in grob schematischer Darstellung, wiedergegeben in einer ersten Blickrichtung entgegen der Montagerichtung, d.h. z-Achsen-Richtung,
• 5 eine Unteransicht, d.h. Innenansicht, eines Beispiels einer Gehäuseoberschale mit darin angeordneten Elementen, insbesondere elektrischen Schaltungselementen, der Traktionsbatterie in der Ausführung der sogenannten „DC-Variante“ gemäß dem grob schematischen Blockschaltbild von 2 in grob schematischer Darstellung, ebenfalls wiedergegeben in der ersten Blickrichtung entgegen der Montagerichtung,
• 6 eine Unteransicht, d.h. Innenansicht, eines Beispiels einer Gehäuseoberschale mit darin angeordneten Elementen, insbesondere elektrischen Schaltungselementen, der Traktionsbatterie in der Ausführung der sogenannten „DC-Variante mit Schützen“ gemäß dem grob schematischen Blockschaltbild von 3 in grob schematischer Darstellung, ebenfalls wiedergegeben in der ersten Blickrichtung entgegen der Montagerichtung,
• 7 die Unteransicht, d.h. Innenansicht, des Beispiels der Gehäuseoberschale mit darin angeordneten Elementen, insbesondere elektrischen Schaltungselementen, der Traktionsbatterie in der Ausführung der sogenannten „DC-Variante mit Schützen“ gemäß dem grob schematischen Blockschaltbild von 3, d.h. gemäß 6, in detaillierter Darstellung, ebenfalls wiedergegeben in der ersten Blickrichtung entgegen der Montagerichtung,
• 8 eine Ausschnittvergrößerung einer Unteransicht, d.h. Innenansicht, des Beispiels der Gehäuseoberschale mit darin angeordneten Elementen, insbesondere elektrischen Schaltungselementen, der Traktionsbatterie in der Ausführung der sogenannten „DC-Variante mit Schützen“ gemäß der detaillierten Darstellung gemäß 7, dargestellt in einer perspektivischen Ansicht aus gegenüber 7 veränderter, zweiter Blickrichtung, mit einer Wiedergabe eines Ausführungsbeispiels einer erfindungsgemäß ausgebildeten Montageschnittstelle,
• 9 eine Ausschnittvergrößerung einer Ansicht einer Gehäuseunterschale eines Beispiels einer erfindungsgemäß ausgebildeten Traktionsbatterie mit einer Traktionsbatterie-Anschlusseinheit und einer Wiedergabe des in 8 abgebildeten Ausführungsbeispiels der Montageschnittstelle in perspektivischer, schematischer Darstellung aus einer dritten Blickrichtung,
• 10 eine weitere Ausschnittvergrößerung einer Ansicht der Gehäuseunterschale des Beispiels der erfindungsgemäß ausgebildeten Traktionsbatterie gemäß 9 mit der Traktionsbatterie-Anschlusseinheit und einer Wiedergabe des in den 8 und 9 abgebildeten Ausführungsbeispiels der Montageschnittstelle in perspektivischer, schematischer Darstellung aus einer gegenüber 9 veränderten, vierten Blickrichtung,
• 11 die zusammengefügten Adapterteile des in den 8, 9 und 10 abgebildeten Ausführungsbeispiels der Montageschnittstelle, wiedergegeben in einer Draufsicht mit einer der ersten Blickrichtung entgegengesetzten fünften Blickrichtung, d.h. einer Blickrichtung in der Montagerichtung,
• 12 eine Gesamtansicht des Beispiels der erfindungsgemäß ausgebildeten Traktionsbatterie in einer der Ausführungen der sogenannten „DC-Variante“ oder der sogenannten „DC-Variante mit Schützen“ im gebrauchsbereiten Fertigungszustand nach Zusammenbau der gemäß den Darstellungen der 2, 3 oder 5 bis 8 ausgebildeten Gehäuseoberschale mit der gemäß den Darstellungen der 9 oder 10 ausgebildeten Gehäuseunterschale, umfassend Traktionsstecker, Ladestecker, Bordnetzstecker und Montageöffnung, in schematischer, perspektivischer Darstellung, wiedergegeben in einer sechsten Blickrichtung, und
• 13 eine Ausschnittvergrößerung des Beispiels der erfindungsgemäß ausgebildeten Traktionsbatterie gemäß 12 mit einer detaillierten Ansicht des Traktionssteckers, des Bordnetzsteckers und der Montageöffnung, in schematischer, perspektivischer Darstellung, wiedergegeben in der sechsten Blickrichtung.

Embodiments of the invention are illustrated in the drawings and described in more detail below. Corresponding elements are provided with the same reference numerals throughout the figures, and a repeated description of these elements is omitted. They show:

• 1 a roughly schematic block diagram of an example of a traction battery designed according to the invention in a so-called “AC variant” for an electrically driven vehicle,
• 2 a roughly schematic block diagram of a modification of the traction battery designed according to a so-called “DC variant” according to 1 ,
• 3 a roughly schematic block diagram of another modification of the traction battery according to a so-called "DC variant with contactors" 1 and 2 ,
• 4 a bottom view, ie inside view, of an example of a housing upper shell with elements arranged therein, in particular electrical circuit elements, of the traction battery in the design of the so-called “AC variant” according to the roughly schematic block diagram of 1 in a roughly schematic representation, shown in a first viewing direction opposite to the mounting direction, ie z-axis direction,
• 5 a bottom view, ie inside view, of an example of a housing upper shell with elements arranged therein, in particular electrical circuit elements, of the traction battery in the design of the so-called “DC variant” according to the roughly schematic block diagram of 2 in a roughly schematic representation, also shown in the first viewing direction opposite to the assembly direction,
• 6 a bottom view, ie inside view, of an example of a housing upper shell with elements arranged therein, in particular electrical circuit elements, of the traction battery in the design of the so-called “DC variant with contactors” according to the roughly schematic block diagram of 3 in a roughly schematic representation, also shown in the first viewing direction opposite to the assembly direction,
• 7 the bottom view, ie inside view, of the example of the upper housing shell with elements arranged therein, in particular electrical circuit elements, of the traction battery in the design of the so-called “DC variant with contactors” according to the roughly schematic block diagram of 3 , i.e. according to 6 , in a detailed representation, also shown in the first viewing direction opposite to the mounting direction,
• 8 an enlarged detail of a bottom view, i.e. inside view, of the example of the upper housing shell with elements arranged therein, in particular electrical circuit elements, of the traction battery in the design of the so-called “DC variant with contactors” according to the detailed illustration according to 7 , shown in a perspective view from opposite 7 changed, second viewing direction, with a reproduction of an embodiment of a mounting interface designed according to the invention,
• 9 an enlarged detail of a view of a housing lower shell of an example of a traction battery designed according to the invention with a traction battery connection unit and a reproduction of the 8 illustrated embodiment of the mounting interface in a perspective, schematic representation from a third viewing direction,
• 10 a further enlarged detail of a view of the housing bottom shell of the example of the traction battery designed according to the invention according to 9 with the traction battery connection unit and a reproduction of the 8 and 9 illustrated embodiment of the mounting interface in perspective, schematic representation from a opposite 9 changed, fourth perspective,
• 11 the assembled adapter parts of the 8 , 9 and 10 illustrated embodiment of the mounting interface, shown in a plan view with a fifth viewing direction opposite to the first viewing direction, ie a viewing direction in the mounting direction,
• 12 an overall view of the example of the traction battery designed according to the invention in one of the versions of the so-called “DC variant” or the so-called “DC variant with contactors” in the ready-to-use manufacturing state after assembly of the according to the representations of the 2, 3 or 5 to 8 designed housing upper shell with the according to the illustrations of the 9 or 10 formed housing lower shell, comprising traction plug, charging plug, vehicle electrical system plug and mounting opening, in a schematic, perspective view, shown in a sixth viewing direction, and
• 13 an enlarged detail of the example of the traction battery designed according to the invention according to 12 with a detailed view of the traction plug, the on-board power supply plug and the mounting opening, in a schematic, perspective representation, shown in the sixth viewing direction.

In 1 An example of a traction battery for an electrically driven vehicle designed according to the invention in a so-called "AC variant" is shown as a roughly schematic block diagram and designated by the reference numeral 200. The traction battery 200 comprises one or more battery modules 201, hereinafter simply referred to as battery modules 201, the detailed circuit of which is not discussed in detail here and which is therefore described in 1 are only indicated by a simple symbol. A positive pole 202 and a negative pole 203 of the battery modules 201 are connected to a traction battery connection unit 204. In addition, the battery modules 201 are connected to the traction battery connection unit 204 via battery measuring lines 205, in particular for measuring a temperature and one or more electrical voltages, preferably one or more cell voltages. The traction battery connection unit 204, the detailed circuitry of which is also not explained in detail, comprises devices, preferably control devices, in particular for operating the traction battery 200, via which the battery modules 201 are connected to various terminals of the traction battery connection unit 204.

As such connections, the traction battery connection unit 204 has a first traction connection 206 and a second traction connection 207, which are provided, on the one hand, for delivering electrical energy from the traction battery 200 to a traction drive of the electrically driven vehicle and, on the other hand, for supplying a charging current for charging the battery modules 201. In this example, the first and second traction connections 206, 207 thus simultaneously form a first charging connection 206a and a second charging connection 207a, respectively, of the traction battery connection unit 204. However, modifications of the traction battery connection unit 204 are also possible, which have charging connections separate from the traction connections.

Furthermore, the traction battery connection unit 204 is according to 1 with on-board power supply connections 208. The on-board power supply connections 208, which are usually and also in the present exemplary embodiment, are in 1 with a common circuit symbol, which here represents a multi-pole electrical connection. In one embodiment, the vehicle electrical system connections 208 can also include pilot line connections (not shown here) which are used to connect at least one - also in 1 not shown - pilot line to the traction battery connection unit 204, as will be explained in more detail below.

The traction battery connection unit 204 further comprises measuring connections 209. Here, too, preferably several measuring connections 209 are provided, which are 1 are represented by a common circuit symbol representing a multi-pole electrical connection.

In addition, the traction battery connection unit 204 is 1 formed with control line connections 210, which are provided in particular for controlling switching devices, as will be explained in more detail below.

The battery modules 201 and the traction battery connection unit 204 with the traction connections 206 and 207, the on-board network connections 208, the measuring connections 209 and the control line connections 210 are accommodated together in a housing bottom shell 101 of a housing 100 of the traction battery 200, which will be described in more detail below.

The 1 The illustrated "AC variant" of the traction battery 200 further comprises a housing upper shell 102, which is equipped with a traction cable harness 211 comprising a first traction conductor 212 and a second traction conductor 213, wherein the first traction conductor 212 is intended to be connected to the positive pole 202 of the battery modules 201 of the traction battery 200 via the traction battery connection unit 204, and the second traction conductor 213 is intended to be connected to the negative pole 203 of the battery modules 201 of the traction battery 200 via the traction battery connection unit 204. For this purpose, the first traction conductor 212 has a first connection element 214, and the second traction conductor 213 has a second connection element 215. The first connection element 214 of the first traction conductor 212 is connected to the first traction connection 206, and the second connection element 215 of the second traction conductor 213 is connected to the second traction connection 207. To connect the traction cable harness 211 of the traction battery 200, i.e., to connect the battery modules 201 to at least one external electrical device arranged outside the housing 100, in particular a traction drive of the vehicle, the traction cable harness 211 further comprises a traction plug 216 with a first contact 217, which is connected to the first traction conductor 212, and a second contact 218, which is connected to the second traction conductor 213. The traction plug 216 is arranged in the housing upper shell 102 and can be connected to a matching, e.g. socket-like counterpart of the external electrical device arranged outside the housing 100, here in particular the traction drive of the vehicle.

The upper housing shell 102 of the 1 The "AC variant" of the traction battery 200 shown is further equipped with a - here multi-pole - on-board electrical system wiring harness 219, which has a third connection element 220, which is also multi-pole in accordance with the on-board electrical system wiring harness 219. The multi-pole third connection element 220 of the on-board electrical system wiring harness 219 is connected to the multi-pole on-board electrical system connections 208 of the traction battery connection unit 204. On the other hand, the multi-pole on-board electrical system wiring harness 219 is connected to a correspondingly multi-pole on-board electrical system plug 221 for connecting the on-board electrical system wiring harness 219 of the traction battery 200, i.e. for connecting the on-board electrical system connections 208 of the traction battery connection unit 204, to at least one external electrical device arranged outside the housing 100, here in particular an on-board electrical system of the vehicle. For this purpose, the vehicle electrical system plug 221 is arranged in the housing upper shell 102 and can be connected to a matching, e.g. socket-like counterpart of the external electrical device arranged outside the housing 100, here in particular an on-board electrical system of the vehicle.

All of the above-described electrical connections between the terminals of the traction battery connection unit 204 and the housing upper shell 102 are established in a mounting interface 222 provided according to the invention. In this mounting interface 222, the traction wiring harness 211 is thus connected to the first traction terminal 206 via the first connection element 214 and to the second traction terminal 207 via the second connection element 215. Furthermore, a connection of the vehicle electrical system wiring harness 219 to the vehicle electrical system terminals 208 of the traction battery connection unit 204 is formed there via the third connection element 220.

The mounting interface 222 also includes the measuring connections 209 and the control line connections 210 of the traction battery connection unit 204. In 1 Furthermore, in the mounting interface 222 on the side of the upper housing shell 102, a fourth connection element 223 is shown, which is connected to the measuring connections 209, and a fifth connection element 224 is shown, which is connected to the control line connections 210. The fourth connection element 223 and the fifth connection element 224 are provided for connecting devices that will be explained in more detail below. However, since no such devices are connected to the measuring connections 209 and the control line connections 210 of the traction battery connection unit 204 in the "AC variant" shown here in the upper housing shell 102, the fourth connection element 223 and the fifth connection element 224 can optionally be omitted here.

The mounting interface 222 comprises a first adapter part 225 connected to the traction battery connection unit 204, which contains the traction connections 206, 207, the vehicle electrical system connections 208, the measurement connections 209, and the control line connections 210, and a second adapter part 226 connected to the housing upper shell 102, which contains the connection elements 214, 215 of the traction wiring harness 211, the third connection element 220 of the vehicle electrical system wiring harness 219, and optionally the fourth connection element 223 and the fifth connection element 224. To establish the above-described electrical connections between the connections of the traction battery connection unit 204 and the housing upper shell 102, the adapter parts 225, 226 are brought together.

In 2 is a roughly schematic block diagram of a modification of the traction battery 200 according to a so-called “DC variant” 1 reproduced; this "DC variant" is designated by the reference numeral 240. The traction battery 240 according to the "DC variant" contains all elements of the traction battery 200 according to the "AC variant," to whose description reference is made above, and thus corresponds completely therewith. In particular, the housing bottom shell 101 and all elements arranged therein, including the first adapter part 225, are designed unchanged compared to the "AC variant." All described elements of the 1 The housing upper shell 102 shown is present. In addition, the housing upper shell provided in the "DC variant" and designated by reference numeral 142 is equipped with a charging plug 241 and a charging cable harness 242. In this "DC variant," a housing, designated here by reference numeral 140, is formed with the housing lower shell 101 and the housing upper shell 142.

The charging cable harness 242 comprises a first charging conductor 243 and a second charging conductor 244, wherein the first charging conductor 243 is intended to be connected to the positive pole 202 of the battery modules 201 of the traction battery 240 via the traction battery connection unit 204, and the second charging conductor 244 is intended to be connected to the negative pole 203 of the battery modules 201 of the traction battery 240 via the traction battery connection unit 204. For this purpose, the first charging conductor 243 is connected to the first connection element 214 of the first traction conductor 212 of the traction line 211, and the second charging conductor 244 is connected to the second connection element 215 of the second traction conductor 213 of the traction line 211. In this way, the first charging conductor 243 is connected to the first traction connection 206, which—as in the "AC variant"—also forms the first charging connection 206a, and the second charging conductor 244 is connected to the second traction connection 207, which—also as in the "AC variant"—also forms the second charging connection 206b.

To connect the charging cable harness 242 of the traction battery 240, i.e., to connect the battery modules 201, to at least one external electrical device arranged outside the housing 140, in particular an external electrical device designed as a battery charging device, the charging cable harness 242 is connected to the charging plug 241. The charging plug 241 comprises a first contact 245, which is connected to the first charging conductor 243, and a second contact 246, which is connected to the second charging conductor 244. The charging plug 241 is arranged in the housing upper shell 142 and—comparable to the traction plug 216—can be connected to a matching, e.g., socket-like counterpart of the external electrical device arranged outside the housing 140, here in particular the battery charging device.

Also in the “DC variant” of the traction battery 240 according to 2 In the mounting interface 222 on the side of the upper housing shell 142, the fourth connection element 223 is shown, which is connected to the measuring connections 209, as well as the fifth connection element 224, which is connected to the control line connections 210. However, since no such devices are connected to the measuring connections 209 and the control line connections 210 of the traction battery connection unit 204, even in the "DC variant" shown here in the upper housing shell 142, the fourth connection element 223 and the fifth connection element 224 can optionally be omitted here as well.

In 3 is a roughly schematic block diagram of a modification of the traction battery 200 according to a so-called "DC variant with contactors" 1 or the traction battery 240 according to 2 reproduced; this "DC variant with contactors" is designated by the reference numeral 280. The traction battery 280 according to the "DC variant with contactors" contains all elements of the traction battery 240 according to the "DC variant", to which reference is made in the above description, and thus corresponds completely therewith. In particular, the housing bottom shell 101 and all elements arranged therein, including the first adapter part 225, are again designed unchanged compared to both the "AC variant" and the "DC variant". All described elements of the 1 upper housing shell 102 shown and the 2 The housing upper shell 142 shown is present. In addition, the housing upper shell provided in the "DC variant with contactors" and designated by reference numeral 182 is equipped with a switching device 281. In this "DC variant with contactors," a housing, designated here by reference numeral 180, is formed with the housing lower shell 101 and the housing upper shell 182.

The switching device 281 comprises a first DC contactor 282, which is inserted into the first charging conductor 243 of the charging cable harness 242 for connecting the first charging conductor 243 to the first contact 245 of the charging plug 241 or for disconnecting the first charging conductor 243 from the first contact 245, and a second DC contactor 283, which is inserted into the second charging conductor 244 for connecting the second charging conductor 244 to the second contact contact 246 of the charging plug 241 or for disconnecting the second charging conductor 244 from the second contact 246. Control lines 284 for controlling the switching device 281, i.e., for switching the DC contactors 282, 283, are led to the DC contactors 282, 283 of the switching device 281. These control lines 284 are connected to the fifth connection element 224 in the second adapter part 226 of the mounting interface 222 and thereby connected to the control line connections 210 of the traction battery connection unit 204. As a result, the contactors 282, 283 can be controlled, i.e., switched, via the traction battery connection unit 204.

Furthermore, the housing upper shell 182 is equipped with a measuring line harness 285 for transmitting a measured value of a charging voltage at the charging plug 241, i.e., at its first and second contacts 245, 246, to the traction battery connection unit 204. For this purpose, the measuring line harness 285 is routed to the fourth connection element 223 and from there connected to the traction battery connection unit 204 via the measuring connections 209. This allows the traction battery connection unit 204 to monitor a charging voltage at the charging plug 241, and the DC contactors 282, 283 can be switched depending on the charging voltage.

Optionally, the housing upper shells 102, 142 and 182 of the traction battery 200, 240 and 280 can also be equipped with at least one pilot line, which, however, is 1 to 3 is not shown. The at least one pilot line serves to detect a connection state of at least the charging plug 241 and/or the traction plug 216 and to transmit at least one related pilot signal to the traction battery connection unit 204 and/or via the vehicle electrical system wiring harness 219 to the vehicle's electrical system. Accordingly, the mounting interface 222 can comprise further connections and connection elements.

In the manner described above, three different variants of the traction battery 200, 240 and 280 can be produced by only slightly varying the equipment of the upper housing shells 102, 142 and 182, while keeping the design of the lower housing shell 101 unchanged.

In 4 is a bottom view, ie an inside view shown in a first viewing direction opposite to the mounting direction, ie z-axis direction, of the housing upper shell 102 according to the 1 The exemplary embodiment of the traction battery 200 in the "AC variant" is shown as a roughly schematic block diagram, with electrical circuit elements arranged therein being indicated roughly schematically. The upper housing shell 102 comprises a cover 103, which is formed with an insulating material and/or an electromagnetically shielding material. The upper housing shell 102 is in 4 with its end facing the rear of the vehicle in its intended installation position pointing to the left, whereas its end pointing to the right is facing the engine compartment of the vehicle.

At this end of the housing upper shell 102 shown on the right, an opening for the installation of the traction plug 216 is provided in the hood 103 in a framed area, from which the traction cable harness 211 with the first traction conductor 212 and the second traction conductor 213 leads to the mounting interface 222, the position of which is also indicated by a framed area in 4 , in which the first connection element 214 of the first traction conductor 212 and the second connection element 215 of the second traction conductor are shown schematically. For this purpose, a fastening element 104 is schematically indicated for each of the traction conductors 212, 213, with which the traction conductors 212, 213 are fixed to the inner surface of the cover 103 of the housing upper shell 102. Furthermore, the vehicle electrical system wiring harness 219 and, in the area of the mounting interface 222, the third connection element 220 are indicated. Optionally, the vehicle electrical system wiring harness 219 in the illustration of the 4 also a pilot line from the mounting interface 222 to the traction connector 216.

5 shows a bottom view of the housing upper shell 142 according to the 2 as a roughly schematic block diagram shown embodiment of the traction battery 240 in the “DC variant”, wherein arranged therein, electrical circuit elements according to the representation of the 4 are again roughly indicated schematically. The housing upper shell 142 again comprises the hood 103, which is also used in the housing upper shell 102 of the “AC variant”, as well as all 4 described elements, i.e. electrical equipment.

The hood 103 has at its end facing the rear of the vehicle in the intended installation position - in 5 again shown pointing to the left - an opening for the installation of the charging plug 241, which, when the housing upper shell 102 is designed according to the "AC variant" according to 4 For the purpose of using identical parts as far as possible, it is also present, but is closed, e.g., with a matching cover. The opening for installing the charging connector 241 is also highlighted by a framed area. From the mounting interface 222 The charging cable harness 242 with the first charging conductor 243 and the second charging conductor 244 is laid along the inner surface of the cover 103 of the housing upper shell 142 to the charging plug 241 and is fixed there by means of a number of fastening elements 144. Parallel to this, a pilot line 247 is laid from the mounting interface 222 to the charging plug 241 and is guided in the mounting interface 222 to the third connection element 220.

6 shows a bottom view of the housing upper shell 182 according to the 3 as a roughly schematic block diagram shown embodiment of the traction battery 280 in the “DC variant with contactors”, wherein arranged therein, electrical circuit elements according to the representation of the 4 and 5 are again roughly schematically indicated. The housing upper shell 182 again comprises the hood 103, which is also used in the housing upper shell 102 of the “AC variant” and the housing upper shell 142 of the “DC variant”, as well as all 4 and 5 described elements, i.e. electrical equipment.

In the housing upper shell 182, the switching device 281, which is additionally provided in the "DC variant with contactors" compared to the "DC variant" and comprises the first DC contactor 282 and the second DC contactor 283, is arranged directly on the charging plug 241. Accordingly, both the control lines 284 between the mounting interface 222 and the switching device 281 and the measuring line harness 285 between the mounting interface 222 and the charging plug 241 are laid along the inner surface of the hood 103 of the housing upper shell 182 parallel to the charging line harness 242 with the first charging conductor 243 and the second charging conductor 244 and are also fixed there - e.g., also by means of the fastening elements 144.

Preferably, the control lines 284 can be combined with the pilot line 247 leading to the charging plug to form a jointly laid wiring harness, i.e., a wiring harness. Particularly preferably, this jointly laid wiring harness is further combined with the vehicle electrical system wiring harness 219, in particular, the vehicle electrical system wiring harness 219 includes the aforementioned pilot line from the mounting interface 222 to the traction plug 216. Accordingly, in this particularly preferred embodiment, the fifth connection element 224 of the control lines 284 is combined with the third connection element 220 of the vehicle electrical system wiring harness 219 or is included by the third connection element 220. In these combinations, only lines with low voltages within the voltage range of the vehicle electrical system are combined to form a low-voltage wiring harness. In contrast, the measuring cable harness 285, which is designed to carry a charging voltage, i.e. a voltage at the level of the battery voltage, is laid separately from this low-voltage cable harness and is led to the fourth connection element 223 in the mounting interface 222.

7 shows in the same subview as 6 the schematically depicted housing upper shell 182 with the elements arranged therein, in particular electrical circuit elements, of the traction battery 280 in the "DC variant with contactors" design, in which in particular the mounting interface 222, the traction plug 216 with the vehicle electrical system plug 221 and the charging plug 241 with the switching device 281 are shown in a detailed, natural representation. In addition, 7 Fastening elements 184 for securing the control lines 284 and the measuring line harness 285 to the inner surface of the cover 103 of the housing upper shell 182 are shown. Advantageously, the charging plug 241 and the switching device 281, on the one hand, and the traction plug 216 and the vehicle electrical system plug 221, on the other hand, are each combined in a plug receptacle, which facilitates assembly.

8 shows an enlarged detail of the bottom view of the end of the upper housing shell 182 facing the engine compartment of the vehicle in the intended installation position in the vehicle in the design of the “DC variant with contactors” according to 7 with the electrical circuit elements arranged therein, in particular the mounting interface 222, the traction plug 216 and the vehicle electrical system plug 221, shown in a perspective view. The mounting interface 222 is formed with the first adapter part 225 and the second adapter part 226. The second adapter part 226 is connected to the housing upper shell 182 and/or guided in the housing upper shell 182 with a predetermined range of motion relative to the housing upper shell 182. The second adapter part 226 in turn contains and/or guides the first and second connection elements 214, 215 of the traction wiring harness 211 and thus also of the charging wiring harness 242, the third connection element 220 of the vehicle electrical system wiring harness 219 and the fourth connection element 223 of the measuring wiring harness 285. The first adapter part 225 is connected to the 8 connected to the traction battery connection unit 204 (not shown) and/or guided in the traction battery connection unit 204 with a predetermined range of motion relative to the traction battery connection unit 204. The first adapter part 225, in turn, contains and/or guides the traction connections or charging connections 206, 207, the on-board power supply connections 208, and the measuring connections 209.

The first 225 and the second adapter part 226 are brought together in a form-fitting manner in the assembly direction, i.e. the z-axis direction, in which the housing upper shell 102, 142 or 182 and the housing lower shell 101 are brought together to form the housing 100, 140 or 180, and engage one another. For this purpose, the second adapter part 226 in particular is designed with guides that taper conically in the assembly direction, here in particular guide surfaces, along which the first adapter part 225 slides when brought together and is thus centered, i.e. aligned. Furthermore, the first 225 and the second adapter part 226 are identical here too in order to use the same parts as far as possible for all variants of the traction battery 200, 240, 280.

8 Furthermore, it shows that in the illustrated embodiment of the housing upper shell 182, the charging cable harness 242 is only routed as far as the traction plug 216, and that the traction cable harness 211 between the traction plug 216 and the traction battery connection unit 204 also serves as part of the charging cable harness 242. This results in a simple structure.

9 shows a perspective, schematic representation of an enlarged detail of a view of the housing bottom shell 101 of the example of the traction battery 200, 240 or 280 designed according to the invention from a third viewing direction. To illustrate the structure, in particular of the 8 In addition to the illustrated embodiment of the mounting interface 222 with the first 225 and the second adapter part 226, the elements of the equipment of the housing upper shell 182 according to the “DC variant with contactors” are also shown, as they are also shown in 8 are shown; only the cover 103 of the housing upper shell 182 has been omitted for clarity. The housing lower shell 101 comprises a tray 105, which, like the cover 103, is formed with an insulating material and/or an electromagnetically shielding material and also serves as a supporting component for the battery modules 201 and the traction battery connection unit 204. The enlarged detail of the view of the housing lower shell 101 according to 9 only the area facing the engine compartment of the vehicle in the intended installation position of the traction battery 200, 240 or 280 in the vehicle, in the illustration according to 9 The end of the lower housing shell 101 shown pointing to the right.

The traction battery connection unit 204 arranged in the tray 105 of the housing lower shell 101 at its engine compartment end is in 9 only with their outer contours; further construction details are irrelevant here. Furthermore, battery modules 201, which are also not shown in detail, are accommodated in the tray 105. On the traction battery connection unit 204, in the assembly direction, ie z-axis direction, ie in the illustration of the 9 The mounting interface 222 with the first adapter part 225 and the second adapter part 226 is arranged on top of the traction battery connection unit 204. The second adapter part 226 is equipped with screws 106, by means of which the second adapter part 226 is fastened to the cover 103 of the upper housing shell 182 or 102 or 142. As shown below, the screws 106 can also serve to close a mounting opening in the cover 103 arranged above the mounting interface in the mounting direction.

The mounting interface 222 is as shown in the 9 configured so that when the housing upper shell 182 is brought together with the housing lower shell 101 and thus at the same time the second adapter part 226 is brought together with the first adapter part 225, both the first connection element 214 of the first traction conductor 212 is brought together with the first traction connection 206 of the traction battery connection unit 204, the second connection element 215 of the second traction conductor 213 is brought together with the second traction connection 207 of the traction battery connection unit 204 and the third connection element 220 of the vehicle electrical system cable harness 219 is brought together with the vehicle electrical system connections 208 of the traction battery connection unit 204 and the fourth connection element 223 of the measuring cable harness 285 is brought together with the measuring connections 209 of the traction battery connection unit 204. The fifth connection element 224 of the control lines 284 is encompassed here by the third connection element 220 of the vehicle electrical system wiring harness 219, and the control line connections 210 of the traction battery connection unit 204 are encompassed by the vehicle electrical system connections 208. The first connection element 214, the first traction connection 206, the second connection element 215, and the second traction connection 207 are configured to be connected to one another by a screw connection for each of the connections, whereas the third connection element 220 and the fifth connection element 224 combined therewith, the vehicle electrical system connections 208 and the control line connections 210 combined therewith, the fourth connection element 223, and the measuring connections 209 are configured to implement plug connections. The relevant connections are screwed or tightened from above after the upper housing shell 182 has been assembled with the lower housing shell 101 in the assembly direction, i.e. in the z-axis direction and thus - with reference to the intended installation position of the traction battery 280 in the vehicle. plugged in. 9 shows these connections in the screwed or plugged manufacturing state.

10 shows a further enlarged detail of a view of the housing bottom shell 101 of the example of the traction battery 280 according to 9 with the traction battery connection unit 204 and a reproduction of the 8 and 9 illustrated embodiment of the mounting interface 222 in a perspective, schematic representation from a 9 changed, fourth perspective. In the representation of the 10 In addition to the hood 103, the second adapter part 226 is also omitted, so that the alignment of the 9 described and connected or to be connected connecting elements 214, 215, 220, 223 and 224 and connections 206, 207, 208, 209 and 210 to each other and in the mounting interface 222, in particular to the first adapter part 225.

11 shows a representation of the assembled adapter parts 225, 226 of the 8 , 9 and 10 illustrated embodiment of the mounting interface 222, reproduced in a plan view in the mounting direction. In this assembled position, the adapter parts 225, 226 engage one another in a form-fitting manner, with the second adapter part 226 encompassing the first adapter part 225. As a result, guides - designed as guide surfaces or guide contours - of the first adapter part 225 for the connections 206, 207, 208, 209 and 210 to be received and guided thereby are aligned with guides of the second adapter part 226 for the connection elements 214, 215, 220, 223 and 224 to be received and guided thereby. In particular, these are 11 : first guides 107 for the first traction connection 206 and the first connection element 214; second guides 108 for the second traction connection 207 and the second connection element 215; third guides 109 for the on-board power supply connections 208, here combined with the control line connections 210, and the third connection element 220, here combined with the fifth connection element 224; and fourth guides 110 for the measuring connections 209 and the fourth connection element 223.

This design of the mounting interface 222 also creates reliable electrical insulation between the terminals and connection elements carrying different voltages.

In 12 is an overall view of the example of the traction battery 240 or 280 designed according to the invention in one of the versions of the “DC variant” or the “DC variant with contactors” in the ready-to-use manufacturing state after assembly of the 2, 3 or 5 to 8 formed housing upper shell 142 or 182 with the 9 or 10 formed housing lower shell 101. The traction battery 240 or 280 is equipped with traction plug 216, charging plug 241 and vehicle electrical system plug 221. For easy access to the internal mounting interface in the mounting direction even after assembly, in particular gluing, of the housing upper shell 142 or 182 with the housing lower shell, the hood 103 of the housing upper shell 142 or 182 has, at its end facing the engine compartment in the intended installation position in the vehicle, on the upper side of this end, a mounting opening 111 which in 12 is closed by a cover 112.

13 shows an enlarged detail of a 12 marked section Z a detailed view of the cover 103 with the traction plug 216, the vehicle electrical system plug 221 and the assembly opening 111 closed with the cover 112. The cover 112 is advantageously used to close the assembly opening with the 9 shown, provided for fastening the second adapter part 226 to the hood 103, are screwed onto the hood 103, so that the screws 106 also serve to close the mounting opening 111 in the hood 103 arranged above the mounting interface 222 in the mounting direction. A sealing layer 113 is also arranged between an edge region of the hood 103 surrounding the mounting opening 111 and an edge of the cover 112 overlapping this edge region.

In summary, the invention proposes a housing for a traction battery of an electrically driven vehicle. To simplify its manufacture, the housing comprises a housing lower shell for accommodating battery modules of the traction battery, in which a traction battery connection unit is arranged, a housing upper shell with a traction plug with a traction cable harness for connecting the traction plug to traction connections of the traction battery connection unit, optionally an on-board power supply plug with an on-board power supply cable harness for connecting the on-board power supply plug to on-board power supply connections of the traction battery connection unit, optionally a charging plug with a charging cable harness for connecting the charging plug to charging connections of the traction battery connection unit, optionally a switching device for connecting or disconnecting the charging plug and the charging cable harness for the charging plug, optionally a measuring cable harness for transmitting a measured value of a charging voltage at the charging plug, a mounting interface for establishing all electrical connections between the traction battery connection unit and the housing upper shell. A method for assembling this housing is also proposed.

List of reference symbols

100

Housing of 200

101

Housing base of 200, 240, 280

102

Housing top shell of 200

103

Hood of 102, 142, 182

104

Fasteners for 212, 213 to 102, 142, 182

105

Tub of 101

106

Screws for attaching 226 to 102, 142, 182

107

First tours in 225, 226 for

108

Second leads in 225, 226 for

109

Third leads in 225, 226 for

110

Fourth leads in 225, 226 for

111

Mounting opening in 103

112

Lid for 111

113

Sealing position between 111 and 112

140

Housing of 240

142

Housing top shell of 240

144

Fasteners for 242 with 243, 244

180

Housing of 280

182

Housing top shell of 280

184

Fasteners for 284, 285

200

Block diagram of traction battery, “AC variant”

201

Battery modules of 200

202

Positive pole of 201

203

Negative pole of 201

204

Traction battery connection unit of 200, 240, 280

205

Battery test leads from 201 to 204

206

First traction connection / first charging connection 206a of 204

207

Second traction connection / second charging connection 207a of 204

208

On-board power connections of 204

209

Measuring connections of 204

210

Control line connections of 204

211

Traction cable harness

212

First traction conductor of 211

213

Second traction conductor of 211

214

First connecting element of 212 for connection with 206

215

Second connecting element of 213 for connection to 207

216

Traction plug for 211

217

First contact from 216, connected to 212

218

Second contact of 216, connected to 213

219

On-board power supply wiring harness, multi-pole

220

Third connection element of 219, multi-pole, for connection with 208

221

On-board power connector for 219, multi-pin

222

Mounting interface of 200, 240, 280

223

Fourth connecting element of 285 for connection with 209

224

Fifth connecting element of 284 for connection with 210

225

First adapter part from 222 to 204

226

Second adapter part from 222 to 102, 142, 182

240

Block diagram of traction battery, “DC variant”

241

Charging plug

242

Charging wiring harness

243

First charging conductor of 242

244

Second charging conductor of 242

245

First contact from 241, connected to 243

246

Second contact of 241, connected to 244

247

Pilot line from 222 to 241

280

Block diagram of traction battery, “DC variant with contactors”

281

switching device

282

First DC contactor of 281

283

Second DC contactor of 281

284

Control lines from 210 or 224 to 282, 283

285

Measuring cable harness from 209 or 223 to 245, 246 from 241

Z

Excerpt from 12

Claims (8)

Housing (100; 140; 180) of a traction battery (200; 240; 280) of an electrically driven vehicle, comprising • a housing lower shell (101), in particular a trough-shaped design, ◯ which is configured to receive at least one battery module (201) of the traction battery (200; 240; 280) and ◯ in which a traction battery connection unit (204) is arranged, • a housing upper shell (102; 142; 182), in particular a hood-shaped design, at least with ◯ a traction plug (216) and a traction cable harness (211) for connecting the traction plug (216) to traction connections (206, 207) of the traction battery connection unit (204), ◯ optionally an on-board power supply plug (221) and a On-board power supply wiring harness (219) for connecting the on-board power supply plug (221) to on-board power supply connections (208) of the traction battery connection unit (204), ◯ optionally a charging plug (241) and a charging wiring harness (242) for connecting the charging plug (241) to charging connections (206a, 207a) of the traction battery connection unit (204), ◯ optionally a switching device (281) for connecting or disconnecting the charging plug (241) and the charging wiring harness (242), ◯ optionally a measuring wiring harness (285) for transmitting at least one measured value of a charging voltage at the charging plug (241), • a mounting interface (222) in which all electrical connections between the connections of the traction battery connection unit (204) and the housing upper shell (102; 142; 182), wherein the mounting interface (222) comprises: • a first adapter part (225) connected to the traction battery connection unit (204) and/or guided in the traction battery connection unit (204), in which the traction connections (206, 207), the charging connections (206a, 207a) and optionally the vehicle electrical system connections (208) and/or the measuring connections (209) are contained and/or guided, and • a second adapter part (226) connected to the housing upper shell (102; 142; 182) and/or guided in the housing upper shell (102; 142; 182), in which connection elements (214, 215; 220; 223) of the traction cable harness (211), the charging cable harness (242) and optionally the vehicle electrical system wiring harness (219) and/or the measuring wiring harness (285), wherein the first and the second adapter part (225, 226) are brought together in a form-fitting manner and engage one another in an assembly direction in which the housing upper shell (102; 142; 182) and housing lower shell (101) are also brought together to form the housing (100; 140; 180). Housing (100; 140; 180) according to Claim 1 , characterized in that at least some of the traction connections (206, 207), the charging connections (206a, 207a) and the on-board network connections (208) and/or the measuring connections (209) are connected in a pluggable and/or screwable manner on the one hand to associated connection elements (214, 215; 220; 223) of the traction wiring harness (211), the charging wiring harness (242) and optionally the on-board network wiring harness (219) and/or the measuring wiring harness (285) on the other hand. Housing (100; 140; 180) according to Claim 1 or 2 , characterized in that all traction connections (206, 207) and all charging connections (206a, 207a) and optionally all on-board network connections (208) and/or all measuring connections (209) on the one hand are pluggably connected to the associated connection elements (214, 215; 220; 223) of the traction wiring harness (211) and the charging wiring harness (242) and optionally of the on-board network wiring harness (219) and/or the measuring wiring harness (285) on the other hand. Housing (100; 140; 180) according to one of the Claims 1 until 3 , characterized in that • at least one, preferably one, mounting opening (111) is arranged in the housing upper shell (102; 142; 182), preferably on an upper side of the housing upper shell (102; 142; 182), and • the mounting interface (222) is arranged on an inner side of the housing upper shell (102; 142; 182) in the region of the at least one, preferably one, mounting opening (111) in the housing upper shell (102; 142; 182) from an outer side of the housing (100; 140; 180) in the mounting direction in which the housing upper shell (102; 142; 182) and the housing lower shell (101) are brought together to form the housing (100; 140; 180). Housing upper shell (102; 142; 182) for a housing (100; 140; 180) according to one or more of the Claims 1 until 4 . Traction battery (200; 240; 280), characterized by • a housing (100; 140; 180) according to one of the Claims 1 until 4 , • and at least one battery module (201). Electrically driven vehicle, characterized by a traction battery (200; 240; 280) according to Claim 6 . Method for assembling a housing (100; 140; 180) of a traction battery (200; 240; 280) of an electrically driven vehicle, characterized by the following method steps: • a housing upper shell (102; 142; 182) and a The housing lower shell (101) are brought together in an assembly direction to form the housing (100; 140; 180) and are connected to one another in a form-fitting manner, in the process ◯ a first adapter part (225) which is connected to a traction battery connection unit (204) arranged in the housing lower shell (101) of the housing (100; 140; 180) and/or is guided in the traction battery connection unit (204), in which first adapter part traction connections (206, 207) and charging connections (206a, 207a) and optionally on-board network connections (208) and/or measuring connections (209) are contained and/or guided, and ◯ a first adapter part (225) which is connected to the housing upper shell (102; 142; 182) of the housing (100; 140; 180) and/or is guided in the housing upper shell (102; 142; 182) guided second adapter part (226), in which connection elements (214, 215; 220; 223) of a traction cable harness (211) and a charging cable harness (242) and optionally of an on-board network cable harness (219) and/or a measuring cable harness (285) are contained and/or guided, brought together in a form-fitting manner in the same assembly direction in which the housing upper shell (102; 142; 182) and the housing lower shell (101) are brought together to form the housing (100; 140; 180); • during and/or after the form-fitting joining and thereby mechanically connecting the first and second adapter parts (225, 226) to one another, ◯ the traction connections (206, 207) and the charging connections (206a, 207a) and optionally the vehicle electrical system connections (208) and/or the measuring connections (209) and ◯ the connection elements (214, 215; 220; 223) of the traction cable harness (211) and the charging cable harness (242) and optionally the vehicle electrical system cable harness (219) and/or the measuring cable harness (285) through a mounting opening (111) in the housing upper shell (102; 142; 182) in the same mounting direction, in the housing upper shell (102; 142; 182) and Housing lower shell (101) are brought together to form the housing (100; 140; 180), plugged and/or screwed and thereby electrically connected to one another; • optionally, ◯ the traction connections (206, 207) and the charging connections (206a, 207a) and optionally the on-board network connections (208) and/or the measuring connections (209) on the one hand and the ◯ connection elements (214, 215; 220; 223) of the traction wiring harness (211) and the charging wiring harness (242) and optionally of the on-board network wiring harness (219) and/or the measuring wiring harness (285) on the other hand are exclusively plugged in and thereby electrically connected to one another in the same assembly direction in which the housing upper shell (102; 142; 182) and the housing lower shell (101) are brought together to form the housing (100; 140; 180).

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