DE102009038154B4 - Temperature control unit and battery system comprising such a temperature control unit - Google Patents

Abstract

Temperature control unit (1) with receptacles (2) for cooling fins, in particular for cooling fins on a battery cell stack, wherein the temperature control unit (1) fluid connections (4) through which a fluid in an interior (7) of the temperature control unit (1) on and off this is flowed out,
characterized in that
in the interior (7) of the temperature control unit (1) at least one in the interior (7) projecting rib (8) is arranged for directional control of a flow of the fluid in the interior (7) of the temperature control unit (1),
wherein the receptacles (2) are configured as recesses which project into the at least one rib (8) such that the recesses for cooling cooling fins inserted into the recesses are connected to the fluid and can be flushed around by the fluid.

Description

The invention relates to a temperature control unit and a battery system with such a temperature control unit having the features of the preambles of the independent claims.

Batteries that are designed to provide high peak power or continuous power over a longer period of time, while achieving a defined service life, often place high demands on efficient refrigeration. Especially in batteries, which are used as energy suppliers and energy storage in electric or hybrid vehicles, large amounts of heat can arise.

Such batteries often consist of individual battery cells, which are connected to a battery module or to a battery cell stack. For a lifetime of a battery cell, in short cell, and thus of the battery, it is not only crucial that it (absolutely) cooled. At least as important is a high spatial uniformity of a heat dissipation from the cell or battery, ie the lowest possible temperature gradient across the individual cell and over a battery cell stack is achieved. As a rule, for this purpose the cell is cooled by means of a cooling medium, in particular a fluid. In this case, a small temperature difference between the cells and the cooling medium is necessary, advantageously this is less than 5 K. Moreover, within a (stationary) flow field of the fluid no large temperature gradients should form.

Out DE 10 2007 063 190 A1 a battery is known, comprising a cooling unit formed as a cooling unit and at least two galvanic single cells. These individual cells are each integrated in a metal housing, wherein each of the metal housing has an extension which is at least partially receivable in a recess of the temperature control unit. In this way, a relatively compact design is realized, which also leads a heat generated in the battery (heat loss) directly through the metal housing to the cooling plate. The extensions of the metal housing have the function of cooling fins which are at least partially retractable into the recesses (receptacles) of the cooling plate, in this way to increase a heat transfer cross section and to achieve a vibration-proof fixation of the individual cells. The temperature control unit also has media connections, through which a cooling medium can be flowed through channels into the temperature control unit.

In the prior art, it is known to equip the temperature control unit or its interior with a cooling coil or to mill cooling passages into the interior space. Such cooling coils, which are usually made of a metal such as copper, but lead to increased material and manufacturing costs. In addition, they bring with them the risk of leaks, especially at interfaces or connections. The drilling or milling of cooling channels in a massively designed body of a cooling plate is a time-consuming and thus costly process step in the production. In addition, a tempering with such drilled or milled cooling channels or equipped with a cooling coil cooling plate generally has an increased mass and thus an increased heat capacity. This leads to a prolonged response of the cooling capacity of the temperature control unit, which has a disadvantageous effect in many applications.

The object of the present invention is therefore to propose a tempering unit which overcomes or at least alleviates the problems mentioned. In particular, the proposed temperature control should have a compact and space-saving design as possible and allow the most effective and spatial homogeneous cooling, especially a equipped with Kühlfinnen battery cell stack. Furthermore, the simplest possible and cost-effective manufacturability with few necessary steps, low material costs and few components is required. In particular, a flow behavior of the temperature control unit should be easy to rework.

This object is achieved according to the invention by a temperature control unit and by a battery system having the features of the independent claims. Advantageous developments are the subject of the dependent claims.

A temperature control unit according to the invention has receptacles for cooling fins, in particular for cooling fins on a battery cell stack, as well as fluid connections, through which a fluid is flowed in and out, wherein in an interior of the temperature control at least one protruding into the interior rib is arranged for directional control of a flow of the Fluids in the interior of the temperature control unit. In this case, the at least one rib is designed as a bulge of a boundary wall of the interior.

The invention makes it possible by the at least one rib targeted control of the fluids within the interior of the temperature control, causing turbulence, unwanted or unnecessary changes of direction with resulting pressure losses and less strongly flowed or flowless areas (dead spaces), which a region-wise less efficient heat dissipation and thus can lead to temperature gradients in the battery can be largely avoided. In contrast to the use of a Kuhlschlangen, which usually brings a relatively high pressure loss along its course, can be through a suitable arrangement of the ribs of the interior of the temperature control as possible flow through parallel without many changes of direction. This has the advantage that even with viscous cooling media, a sufficient flow rate of the fluid can be generated even with inexpensive and energy-saving pumps. Another advantage of generating as parallel as possible flow through the temperature control unit by means of ribs is that forms a temperature gradient along this path by a heat absorption in the fluid not as in a cooling coil along a long flow path through the temperature control unit, creating a spatially inhomogeneous Cooling the battery can come.

In addition, in a temperature control unit according to the invention, a subsequent correction of a flow behavior in its interior is easily possible by reworking the ribs. Furthermore, the ribs have the advantage of increasing a surface area of the interior and thus promoting a heat exchange between the fluid and the temperature control unit. The ribs can also be produced as an integral part of the tempering unit, in particular in a casting process, without the need for additional components or piping.

By saving piping with the associated interfaces by an integral construction according to the invention can also be realized a space-saving design, which means a decisive advantage, especially in applications in an electric or hybrid vehicle. In addition, there is a minimization of the risk of leaks at cutting and sealing sites.

By such a low-cost Integralbauweise with a high degree of integration, the temperature control unit by appropriate shaping targeted in their functional properties to specific requirements adaptable without components or piping are replaced or the manufacturing process significantly changes or expensive. Thus, most of the following embodiments can be realized solely by a specific design of these ribs. In addition, the proposed temperature control unit can be used particularly well as a common part in the modular system for energy storage multiple times. Furthermore, the use of ribs for flow control in contrast to cooling coils no further interfaces needed, which can lead to leaks. Finally, the proposed temperature control is also characterized by a very safe electrical insulation, especially in a production of an electrically insulating plastic.

In an advantageous embodiment of the tempering unit, a family of essentially parallel ribs is provided, which allow a particularly efficient control of fluid flow. It is particularly advantageous if this group of ribs is distributed as evenly as possible over an entire surface of a boundary wall, so as to largely avoid flowless areas of the interior. The distance between two ribs is preferably not more than three times their thickness. Furthermore, essentially parallel means an angular deviation of less than 10 ° from an exactly parallel alignment.

In one embodiment with a particularly well-controlled flow behavior of the fluid, it is provided that the at least one rib has a longitudinal extent with a length of at least 50% of a distance between two opposite boundary surfaces of the interior. In a particularly favorable embodiment, said length of the ribs amounts to at least 80% of this distance or even comes into contact with these limiting surfaces.

The efficiency of the control of the flow of the fluid is particularly high in an embodiment of the invention, which provides that the at least one rib encloses a substantially perpendicular angle with a boundary surface of the interior adjacent to this rib. In this case, this angle is in a range between 70 ° and 110 °, or in a particularly advantageous embodiment between 80 ° and 100 °.

A height of the rib, which (together with the above-mentioned angle) is a measure of how far such a rib protrudes into the interior, in an advantageous embodiment of the invention is greater than a thickness of the rib which is perpendicular to an extension of the rib is defined to your length extension and its height. In this way, material is saved and achieved a particularly large surface of the interior. In a particularly advantageous further development of the invention, the ribs go to the cover of the cooler until it is short so that only a small gap exists. It is also possible to perform the ribs flush with the lid, without resulting in a positive connection between the lid and cooling fins.

In a particularly easy to manufacture further development of the invention, the temperature control unit is made of a single material. For this purpose, for example, plastics are suitable, in particular those with a high thermal conductivity.

In an advantageous further development of the invention, an inner total volume of the temperature control unit, that is to say a volume of the interior through which the fluid can flow, is advantageously only slightly less than an external total volume of the temperature control unit, which is given by the outer dimensions of the temperature control unit. In this case, the ratio of the total internal volume to the total external volume is advantageously in a range between 0.8 and 1, preferably between 0.9 and 1. This has the advantage that such a temperature control is particularly easy and material-saving with only a very small own heat capacity and thus with a particularly responsive cooling capability. Such a large inner volume compared to the outer volume can be realized by means of drilled or milled flow channels usually only by removing a large volume of material and with a correspondingly high workload.

In principle, a milled version tempering unit of the type proposed here is possible. In a particularly advantageous embodiment of the invention, however, the tempering unit is produced in a casting process, which is generally particularly cost-effective and can be carried out in a few steps. For this purpose, a two-part embodiment of the tempering unit with a half shell comprising the receptacles and the at least one rib and a lid for closing the half shell is particularly well suited. The lid and in particular the half-shell can then be realized particularly easily and inexpensively as castings with recesses for the fluid connections, since both components, the lid and the half-shell, can be realized without undercuts. The lid can be easily attached to the half shell, such as cohesive, z. As by gluing, welding or soldering, or by means of terminals such as metal clips, but between the half-shell and the lid advantageously a seal is arranged. Thanks to the smooth joints, which can easily be produced by casting, the assembly of lid and half-shell can be carried out particularly easily and safely. In a further development of this two-part embodiment, the lid has stiffening ribs for increasing mechanical stability of the lid and for controlling the fluid flow.

A further development of the invention provides that two mutually opposite boundary walls of the interior are connected to each other by at least one of the ribs for dividing the interior into at least two chambers. These chambers allow the flow of the fluid in the interior to be controlled particularly well, so that a particularly uniform cooling can be set. In particular, in this way, particularly efficient turbulence or unnecessary change of direction of the fluid can be reduced, as a result of which a flow behavior of the fluid as a whole is improved and a pressure drop is reduced. Preferably, the at least one rib connecting the two boundary walls and thus forming a chamber has a thickness which is smaller than the distance between the two boundary walls of the interior. In this way, a particularly lightweight construction is achieved with a particularly large surface of the interior.

An advantageous further development of the invention provides that one of the chambers is designed as a distribution chamber, which is connected through passage openings with at least two adjoining chambers, thereby controlling an inflow or outflow of the fluid into the chambers by a size of the individual passage openings leaves. In this way, a flow pattern through the arrangement of the chambers and through openings of the respective ribs can be controlled particularly easily and safely. The easy reworkability of the passage openings and adjustability or correction of the flow behavior is also particularly advantageous. In particular, the number of changes of direction of the flow of the fluid and thus a necessary working pressure of the fluid can thus be minimized. For the same purpose, a particular embodiment of the invention provides that the temperature control unit has an inlet chamber and a drain chamber which are each connected to one of the fluid connections and are connected via passage openings to a region of the interior. Particularly advantageous is a direct connection between the inlet and outlet chamber, each with a distribution chamber. In this way, a particularly favorable flow behavior at a low working pressure and thus ensure low energy consumption.

In a particular embodiment of the invention, it is provided that one of the ribs or generally a wall separating two regions of the interior is made double-walled for thermal decoupling of areas of the interior adjacent to this rib. In this case, a gap between two walls of the rib or wall can advantageously be filled with air or a thermally insulating material.

In a particularly advantageous development of the invention it is provided that the receptacles are configured as recesses, which in the ribs protrude. This has the advantage that cooling fins inserted into the recesses can be cooled particularly effectively by the fluid since there is only a particularly small spatial distance between the fluid and the cooling fin and thus a very low heat transfer resistance between the fin and the fluid. In particular, the Kuhlfinnen are connected in this way on both sides of the fluid and umspülbar by the fluid, so that a particularly good heat exchange between Kühlfinne and fluid takes place.

In a further development of the invention, it is provided that one of the ribs has a notch to form a passage opening. This is particularly advantageous in connection with manufacture in a casting process when this indentation is provided at an upper edge of the rib. In this way, the size of the notch and thus the resulting passage opening can be adjusted particularly easily for targeted control of the fluid flow.

A particular embodiment of the invention provides that on one, preferably on all of the ribs a sealant is applied for sealing adjacent to this rib areas of the interior. This is particularly advantageous in the two-part embodiment described above, in which all chambers forming ribs are part of the half-shell. If this is closed with the lid, the chambers are particularly well sealed with the help of the sealant at a contact with the lid.

A further development of the invention provides that a Wärmeleitvergussmasse is applied to the inner boundary surfaces of the images. This feature serves to improve tolerance to distance variations between cooling fins, especially in the case of battery cell stacks, and for improved thermal conductivity between the fins and the temperature control unit.

The invention also proposes a battery system which includes at least one battery module with cooling fins and at least one temperature control unit of the type proposed here, the cooling fins of the at least one battery module being inserted into the receptacles of the at least one temperature control unit. In this way, the cooling fins perform two functions. On the one hand, they stabilize the connection of the tempering unit with the battery module, whereby a particularly high vibration resistance of this connection is achieved, and on the other hand improve the heat conduction between the battery module and the temperature control unit. In this case, the battery module with the temperature control unit can also be firmly connected via connecting elements. Preferably, the temperature control unit is made of a thermally conductive as possible but electrically insulating plastic, whereby an electrical insulation of the battery, in particular of the cooling liquid, is achieved.

The battery module may include one or more battery cells, which are preferably interconnected. The battery system may in particular be part of an electric or hybrid vehicle.

In a particular embodiment, the battery system has a supply line for a parallel connection of the fluid into the at least one temperature control unit and a discharge for a parallel-connected drain of the fluid from the at least one temperature control unit.

In the following, specific embodiments of the invention will be described with reference to FIGS 1 to 5 described. It shows

1 2 is a schematic representation of a tempering unit of a type proposed here in a two-part embodiment.

2 1 is a schematic representation of a cross-section of a tempering unit of a type proposed here, in which the receptacles for the cooling fins protrude into the ribs of the tempering unit,

3 a schematic representation of several ribs and a chamber in an interior of a tempering unit of the type proposed here,

4 a further embodiment of a tempering unit of the type proposed here, in which the cooling fins do not protrude into the ribs,

5 a schematic representation of an interior with ribs of a tempering unit of the type proposed here,

6 a battery system proposed here type.

In 1a is a temperature control unit 1 here proposed type shown schematically. On top of the tempering unit are recordings 2 provided in which cooling fins of a battery cell stack are inserted (the latter not shown here). These shots 2 are as recesses in an upper half shell 3 the temperature control unit 1 formed. The half shell 3 also has fluid connections 4 for an inlet and outlet of a fluid in the temperature control unit. A lid 5 is with metal clips 6 on the upper half shell 3 attached. In 1b a simplified exploded view of this temperature control unit is shown.

In the 2a . 2 B . 2c is a temperature control unit 1 here proposed type shown schematically. It is like in 1a and 1b around a tempering unit 1 in a two-part embodiment, wherein here for the sake of clarity, only an upper half-shell 3 the temperature control unit 1 is shown. 1a shows a perspective view of a cross section of this half-shell 3 , The temperature control unit has recordings 2 for cooling fins, in particular for cooling fins on a battery cell stack (not shown here), which extend transversely to the sectional plane of the representation in this illustration. The temperature control unit 1 has fluid connections 4 on, by a fluid is flowed in and out. In this case, the fluid may be cooled for cooling a battery cell stack or else be heated for heating the battery cell stack. In most applications, however, a cooling function of the temperature control unit is of particular importance.

In this case, the fluid via connection hoses, which are connected to the fluid connections, to a cooling system (not shown here) can be conducted by a heat stored in the fluid heat is removed from the fluid. In an interior 7 the temperature control unit are in the interior 7 protruding ribs 8th . 8th' intended for a directed control of a flow of the fluid and to avoid flowless areas in the interior 7 the temperature control unit 1 , Some of the ribs 8th' have a height H ', which is a height of the interior 7 equivalent. The remaining ribs 8th have a lower height h.

In the assembled state, in which the lid 5 on the half shell 3 fixed, form the higher ribs 8th' between them chambers 9 out. In the perspective view in 1c this upper half shell 3 the temperature control unit 1 is in particular a distribution chamber 9 ' recognized chamber to recognize. This distribution chamber 9 ' is via passages 10 with other chambers 9 connected.

There is also an inlet chamber 11 as well as a drainage chamber 11 ' provided, which via a Durchtrittsoffnung 10 ' with the distribution chamber 9 ' connected is. The inlet and the outlet chamber 11 . 11 ' also have fluid connections 4 on.

The illustrated half shell 3 is preferably made of an electrically insulating but highly thermally conductive plastic and, since it has no undercuts, has been produced in a simple and cost-effective manner in a casting process. The passages 10 . 10 ' are each as notches of a rib 8th' designed. In this way, a size of the passage opening can be 10 . 10 ' easy to adjust in the casting process and also post-processing at a later date. Due to the size of the passages 10 is a flow rate of the fluid through the chambers 9 , specifically controllable and postprocessable. In particular, by a corresponding adjustment of the size of the through holes 10 a possible pressure drop along the distribution chamber 9 ' compensate, so that a uniform across the battery cell stack flow and cooling effect of the fluid in the temperature control unit 1 can be set. Furthermore, let yourself over the passages 10 . 10 ' an entire inflow and outflow velocity (flow rate) of the fluid through the temperature control unit 1 to adjust. Overall, through the chambers 9 , the distribution chambers 9 ' and the inlet and outlet chambers 11 . 11 ' a flow through the temperature control achieved with a very low pressure loss, since unnecessary changes of direction and vortex formations in the flow are largely avoided. Therefore, Kuhler is also suitable for operation at low temperatures with a viscous fluid and for setting a sufficient flow rate of such a fluid for effective and homogeneous cooling, in particular a connected battery cell stack in an electric or hybrid vehicle.

The pictures 2 protrude as deep as possible into the ribs 8th into it, so that the cooling fins can be cooled particularly well by the fluid. This fact is illustrated by an enlarged view in 3 described in more detail.

In 3 In turn, a cross-section of a tempering unit of the type proposed here is shown schematically. The tempering unit comprises a half-shell 3 with recordings 2 and ribs 8th and 8th' where some of the ribs 8th a height h and other ribs 8th' a height H ', wherein the height H' a height of the interior 7 equivalent. In this way, the higher ribs form 8th' the height H 'between them chambers 9 , At a contact point between the higher ribs 8th' and the lid 5 is sealant 12 applied to the chambers 9 To seal against adjacent chambers and to achieve a higher stability of the temperature control unit.

Ribs 8th . 8th' close with an adjoining boundary surface of the interior an angle α in a range between 70 ° and 110 °, or in a particularly advantageous embodiment between 80 ° and 100 °. Furthermore, the ribs have 8th and 8th' a h compared to their heights h and H 'a smaller thickness d, wherein the thickness of the ribs 8th . 8th' less than half its height, preferably less than one third. The height H 'of the chamber-forming ribs corresponds to this 8th' a height H 'of the interior of the Tempering. Furthermore, a wall thickness of the half-shell 3 and the lid 5 as low as possible, so that in particular a height H of the temperature control unit is only slightly higher than the height H 'of the interior of the temperature control unit. In this way, with a still sufficient mechanical stability, a low weight and a low own heat capacity of the temperature control unit are achieved. Thus, an inner total volume of the temperature control unit, that is to say a volume of the interior through which the fluid can flow, is only slightly smaller than an external total volume of the temperature control unit, which is given by the outer dimensions of the temperature control unit, so that the ratio of the total internal volume to the total external volume is within one range between 0.8 and 1, preferably between 0.9 and 1. Thus, the embodiment shown is particularly particularly light and material-saving with only a very small own heat capacity and thus with a particularly responsive cooling ability. Furthermore, such an interior has 7 the advantage of a large surface for a particularly efficient cooling performance.

The pictures 2 for cooling fins of a battery system (not shown here) protrude particularly deep into the ribs 8th into it. Furthermore, on an inside of the shots 2 a Wärmeleitvergussmasse 13 applied. These features have the beneficial effect of allowing heat transfer from the cooling fins to the fluid in the interior 7 the temperature control unit 1 is improved. Furthermore, the Wärmeleitvergussmasse serves 13 an improved tolerance to distance deviations between cooling fins, in particular in the case of a battery cell stack connected to the temperature control unit.

The lid 5 also has stiffening ribs 14 on, which gives the lid a higher stability against deformation. The stiffening ribs 14 improve as a counter contour to the ribs 8th also the flow behavior of the fluid.

The right of the two illustrated chamber-forming ribs 8th' is double-walled with an air-filled intermediate layer 15 , This embodiment has the advantage of improved thermal insulation between this rib 8th' adjacent areas of the interior 7 the temperature control unit 1 , In this way, improved control and control of heat transfer through the fluid can be achieved. Such a double-walled embodiment of a rib is particularly advantageous when the fluid has very different temperatures in the regions adjacent to it.

In 4a and 4b is another exemplary embodiment of a temperature control unit 1 Proposed here in perspective or in a perpendicular to recordings 2 extending cross section shown schematically. The temperature control unit has 1 a two-part construction with a half shell 3 and a lid (the latter not shown). The half shell 3 has recordings 2 for cooling ribs and ribs 8th which are in an interior 7 the temperature control unit 1 protrude.

In contrast to the embodiments described with reference to the preceding figures protrude in the temperature control unit shown here 1 the recesses 2 not in the ribs 8th into it. In this way, the temperature control unit has 1 a higher mechanical stability, but usually also a higher weight and a larger external height H. A significant advantage of this embodiment is that a flow direction of the interior 7 flowing fluid regardless of a course of the recesses 2 can be adjusted. So could the ribs 8th as well perpendicular or in any other orientation relative to the shots 2 run. In this way, different types of cooling can be realized, which differ from each other by the flow directions relative to the orientation of the cooling fins.

The half shell 3 also has passage openings 10 on, through which the fluid from a distribution chamber (not shown here) in the visible here region of the interior 7 can flow. The passages 10 are as notches in an upper edge of a transverse to the recesses 2 extending rib 8th' designed. As a result, the passage openings can be produced particularly easily in a casting process without undercuts and without further process steps. In this way, the size of the notch and thus the resulting passage opening can be easily adjusted or reworked for targeted control of fluid flow.

Furthermore, the half shell 3 an inlet and a drain chamber 11 . 11 ' on, which by a double-walled partition 14 are separated from each other. Due to the double-walled construction of this partition 16 , with a gap 15 filled with air or an insulating compound, the inlet and the outlet chamber are particularly well insulated from each other thermally. This will cause heat transfer from a heated fluid in the drain chamber 11 ' to a cool fluid in the inlet chamber 11 largely avoided and achieved a particularly good cooling efficiency of the tempering.

In 5 is a half shell 3 a tempering unit proposed here kind shown schematically. It is an interior 7 the temperature control unit facing side of the half-shell 3 shown. On this side of the half shell are ribs 8th provided, which in the interior 7 protrude and have a longitudinal extent with a length 1 of more than 50% of a distance L between two opposite boundary surfaces of the interior. In a particularly favorable embodiment, said length of the ribs is at least 80% of this distance. Preferably, these ribs are with said boundary surfaces or a transverse to them (for example, a distribution chamber 9 ' forming) rib in a positive or cohesive contact. In this way, a particularly good control of a flow of a fluid flowing through the interior can be achieved without requiring a solid construction with holes serving as fluid channels or a cooling coil.

In 5 is a special embodiment of a battery system 17 here proposed type shown schematically, which three tempering units 1 and to these connected battery cell stacks (not shown here). The battery system 17 also includes a supply line 18 about which the three tempering units 1 connected in parallel and via which a fluid is passed into the temperature control units. In addition to this parallel configured inlet, the battery system also has a parallel outlet with a drain 19 , The supply line 18 and the derivative are connected to a cooling system 20 connected, which is adapted for cooling the fluid and for generating a pressure for a flow of the fluid through the battery system 17 , Such a battery system may as well comprise fewer or more than three tempering units. The parallel supply and discharge has the advantage over a serial piping of an overall lower pressure drop. Particularly important, however, is a uniform flow of the fluid across all of the tempering units, with a fluid of the same temperature in each case, so that the same cooling performance can be achieved for all of the connected battery cell stacks.

Claims (19)

Tempering unit ( 1 ) with pictures ( 2 ) for cooling fins, in particular for cooling fins on a battery cell stack, wherein the temperature control unit ( 1 ) Fluid connections ( 4 ), through which a fluid in an interior ( 7 ) of the temperature control unit ( 1 ) on and out of this, characterized in that in the interior ( 7 ) of the temperature control unit ( 1 ) at least one in the interior ( 7 ) protruding rib ( 8th ) is arranged for directional control of a flow of the fluid in the interior ( 7 ) of the temperature control unit ( 1 ), the images ( 2 ) are configured as recesses, which in the at least one rib ( 8th protrude such that the recesses are connected to the cooling of cooling fins inserted into the recesses to the fluid and are umspülbar by the fluid. Tempering unit ( 1 ) according to claim 1, characterized in that the recesses are connected on both sides to the fluid and are umspülbar by the fluid. Tempering unit ( 1 ) according to one of the preceding claims, characterized in that at least one recess in at least one rib ( 8th ) protrudes. Tempering unit ( 1 ) according to one of the preceding claims, characterized in that a respective recess in a respective rib ( 8th ) protrudes. Tempering unit ( 1 ) according to one of the preceding claims, characterized in that two mutually opposite boundary walls of the interior ( 7 ) by at least one of the ribs ( 8th . 8th' ) are connected to each other for dividing the interior ( 7 ) in at least two chambers ( 9 . 9 ' ). Tempering unit ( 1 ) according to one of the preceding claims, characterized in that at least one of the ribs ( 8th . 8th' ) a passage opening ( 10 . 10 ' ) having. Tempering unit ( 1 ) according to one of the preceding claims, characterized in that the temperature control unit ( 1 ) an inlet chamber ( 11 ) and a drain chamber ( 11 ' ), which in each case with one of the fluid connections ( 4 ) and through openings ( 10 ' ) to an area of the interior ( 7 ) are connected. Tempering unit ( 1 ) according to one of the preceding claims, characterized in that the temperature control unit ( 1 ) has a two-part structure with a recordings ( 2 ) and the at least one rib ( 8th . 8th' ) comprising a half shell ( 3 ) and a lid ( 5 ) for closing the half-shell ( 3 ). Tempering unit ( 1 ) according to one of the preceding claims, characterized in that one of the ribs ( 8th . 8th' ) a notch ( 10 . 10 ' ) has to form a passage opening ( 10 . 10 ' ). Tempering unit ( 1 ) according to one of the preceding claims, characterized in that on inner boundary surfaces of the recordings ( 2 ) a Wärmeleitvergussmasse ( 13 ) is applied. Tempering unit ( 1 ) according to one of the preceding claims, characterized in that the temperature control unit ( 1 ) is produced in a casting process. Tempering unit ( 1 ) according to one of the preceding claims, characterized in that one of the ribs ( 8th . 8th' ) is designed double-walled for a thermal decoupling of adjacent to this rib areas of the interior. Tempering unit ( 1 ) according to one of the preceding claims, characterized in that on one of the ribs ( 8th . 8th' ) a sealant ( 12 ) is applied for sealing to this rib ( 8th . 8th' ) adjacent areas of the interior. Tempering unit ( 1 ) according to one of the preceding claims, characterized in that the at least one rib ( 8th . 8th' ) has a longitudinal extent with a length of at least 50% of a distance between two opposite boundary surfaces of the interior ( 7 ). Tempering unit ( 1 ) according to one of the preceding claims, characterized in that the at least one rib ( 8th . 8th' ) has a longitudinal extent, so that no positive connection between opposing boundary surfaces of the interior ( 7 ) consists. Tempering unit ( 1 ) according to one of the preceding claims, characterized in that the at least one rib ( 8th . 8th' ) with a to this rib ( 8th . 8th' ) adjacent boundary surface of the interior ( 7 ) includes a substantially vertical angle. Tempering unit ( 1 ) according to one of the preceding claims in combination with claim 5, characterized in that the at least one rib connecting the two boundary walls ( 8th . 8th' ) has a thickness d which is smaller than the distance between the two boundary walls of the interior. Battery system ( 17 ) comprising at least one battery module with cooling fins and at least one temperature control unit ( 1 ) according to one of claims 1 to 17, wherein the cooling fins of the at least one battery module in the recordings ( 2 ) of the at least one temperature control unit ( 1 ) are inserted. Battery system ( 17 ) according to claim 18, characterized in that the battery system is a supply line ( 18 ) for a parallel inlet of the fluid into the at least one temperature control unit ( 1 ) and a derivative ( 19 ) for a parallel-connected sequence of the fluid from the at least one temperature control unit ( 1 ) having.

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