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WO2018219966A1 - Élément de mise en contact pour un système de mise en contact de cellules pour un dispositif électrochimique et procédé servant à fabriquer un système de mise en contact de cellules pour un dispositif électrochimique - Google Patents

Élément de mise en contact pour un système de mise en contact de cellules pour un dispositif électrochimique et procédé servant à fabriquer un système de mise en contact de cellules pour un dispositif électrochimique Download PDF

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Publication number
WO2018219966A1
WO2018219966A1 PCT/EP2018/064099 EP2018064099W WO2018219966A1 WO 2018219966 A1 WO2018219966 A1 WO 2018219966A1 EP 2018064099 W EP2018064099 W EP 2018064099W WO 2018219966 A1 WO2018219966 A1 WO 2018219966A1
Authority
WO
WIPO (PCT)
Prior art keywords
line system
contacting
contacting element
signal line
cell
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2018/064099
Other languages
German (de)
English (en)
Inventor
Stephanie ROSENKRANZ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ElringKlinger AG
Original Assignee
ElringKlinger AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ElringKlinger AG filed Critical ElringKlinger AG
Publication of WO2018219966A1 publication Critical patent/WO2018219966A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/571—Methods or arrangements for affording protection against corrosion; Selection of materials therefor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/01—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the form or arrangement of the conductive interconnection between the connecting locations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to a contacting element for producing an electrically conductive connection between a cell connector or a power connection of a power line system of an electrochemical device on the one hand and a signal line of a signal line system of the electrochemical device on the other.
  • the signal conducting system of the electrochemical device serves to monitor the individual electrochemical cells of the electrochemical device with respect to physical quantities, such as the voltage. For this purpose, for example, potential differences between different cell connectors are measured. At the same time a potential equalization between the electrochemical cells can take place.
  • the signal sources or measuring points are electrically conductive by the signal line system with a signal line connection serving as an interface to a monitoring device of the electrochemical device or with an integrated into the electrochemical device
  • the signal line system includes a wiring harness which serves for voltage tapping and forms an electrical connection from the cell connectors or power terminals to the signal line terminal or to the monitoring device.
  • the cable ends of the cable harness are welded in an assembly plant with the respectively associated cell connectors or power connections, for example by an ultrasonic welding method, a resistance welding method or a laser welding method.
  • the cell connectors and power connections as well as the cell terminals are made of aluminum. The unmistakable welding avoids the formation of brittle intermetallic phases, which would otherwise lead to higher contact resistances in the case of current-carrying connections.
  • the voltage taps of the signal line system are formed of copper. Since copper in the electrochemical series is a more noble metal than aluminum, the material transition must be sealed from the copper voltage taps to the aluminum cell connectors or power connectors, for example, by applying a lacquer to prevent corrosion in the area of the material junction.
  • the present invention has for its object to provide a Kunststofftechniks- element of the type mentioned, which without additional corrosion protection, in particular without a seal of a material transfer between the contacting and the cell connector or power connection to be connected, gets along.
  • a contacting element with the features of the preamble of claim 1, characterized in that the contacting element comprises a current line system side portion of a first material and a signal line system side portion of a second material, wherein the second material is different from the first material and wherein the power line system side portion and the signal line system side portion are joined together by plating.
  • the present invention is thus based on the concept of moving the material transition from the contact point between the contacting element and the cell connector or the power connection into the contacting element itself, where a material connection of a power line system side portion of the contacting of the first material and a signal line system side of the Contacting element is provided from the second material.
  • the first material can be chosen so that it is cohesively connectable to the material of the cell connector or the power connector without additional corrosion protection is required at the material transition between the power line system side portion of the contacting and the associated cell connector or power connector.
  • the power line system-side section and the signal line system-side section of the contacting element can be connected to one another in particular by roll-plating, in particular by cold-roll plating.
  • the first material comprises aluminum.
  • the first material comprises aluminum as the main component.
  • the main constituent of a material is that component which has the largest mass fraction of the relevant material.
  • the first material may in particular be aluminum or an aluminum alloy.
  • a contacting element with a current-carrying-system-side section made of an aluminum-containing first material can be connected in a sorted manner with a cell connector or a power connection made of an aluminum-containing material, in particular welded.
  • the second material comprises copper.
  • Copper is particularly suitable for the production of crimp connections, as they can be used in the manufacture of cable harnesses with connectors.
  • the second material comprises copper as the main constituent.
  • the second material is copper or a copper alloy.
  • a contacting element with a signal line system side portion of a copper-containing second material can be sorted with a signal line made of copper, in particular by crimping fixed to the same, be.
  • the signal-line-system-side section of the contact-making element preferably comprises a connection region, at which the contacting element can be electrically conductively connected to the signal line.
  • connection region can in particular comprise a crimping element or a crimping element preform, from which a crimping element can be formed by a crimping process.
  • the current-line system-side section of the contacting element preferably comprises a contact region which, in the mounted state of the contacting element, bears against the respectively assigned cell connector or current connection and is electrically conductively connected thereto, in particular materially bonded.
  • the contacting element comprises a connection region which connects the connection region and the contact region of the contacting element and preferably a relative movement of the connection region and the contact region relative to one another, for example during operation of the electrochemical device and / or tolerance compensation the mounting of the contacting element allows.
  • connection region is particularly flexible if it comprises one or more waves.
  • One or more waves of the connection region may in particular run transversely to a longitudinal direction of the contacting element.
  • the power line system-side section and the signal line system-side section of the contacting element are connected to one another in the connection region of the contacting element.
  • the contacting element according to the invention is particularly suitable for use in a cell contacting system for an electrochemical device comprising a plurality of electrochemical cells and a power line system,
  • the cell contacting system comprises a signal line system having one or more signal lines for electrically connecting each one of them Signal source with a signal line connection or with a monitoring device of Zellutton michssystems and at least one inventive contacting element.
  • the Zell prominence istssystem comprises a carrier element, for example in the form of a carrier plate, which carries the signal line system.
  • the power line system is a component of the Zell prominence istssystems and that the support member carries the power line system.
  • the power line system includes one or more cell connectors for electrically connecting cell poles of various electrochemical cells.
  • the power line system allows a power flow to flow from and to the electrochemical cells of the electrochemical device.
  • a cell connector of the power line system may be any one-piece or composite, in the operation of the electrochemical device current-carrying element, which connects the cell poles of different electrochemical cells in an electrically conductive manner.
  • Such a cell connector can be formed, for example, from electrically interconnected cell terminals of the electrochemical cells.
  • Such a cell connector is an element provided in addition to the cell terminals of the electrochemical cells to be connected to one another, which connects the cell terminals to one another in an electrically conductive manner.
  • the electrochemical device is preferably designed as an accumulator, for example a lithium-ion accumulator.
  • the electrochemical device can in particular be designed as an energy store for a motor vehicle.
  • the present invention further relates to a method of manufacturing a cell contacting system for an electrochemical device comprising a plurality of electrochemical cells and a power line system, the method comprising:
  • Another object of the present invention is to provide such a method which enables the electrically conductive connection of a signal line to a cell connector or a power connection of the power line system, without the need for additional corrosion protection, in particular in the form of a seal.
  • Producing at least one contacting element of a sheet-like starting material which comprises a first material portion of a first material for forming a power line system side portion of the contacting and a second material portion of a second material to form a signal line system side portion of the contacting element; and Defining a signal line of the signal line system on the signal line system side portion of the contacting element.
  • a contacting element preform is cut out of the flat starting material and the contacting element is formed from the contacting element preform by forming operations.
  • the power line system-side section of the contacting element is fixed in a material-locking manner to a cell connector or to a power connection of the power line system.
  • the signal line system side portion of the contacting element according to the invention can fulfill in particular the requirements of a crimping process.
  • the current-carrying-system-side section of the contacting element according to the invention can fulfill in particular the requirements for a single-type welding with a cell connector or a current connection of a power line system of an electrochemical device.
  • the current-carrying-system-side section of the contacting element can in particular be connected to the associated cell connector or power connection by laser welding, ultrasonic welding or resistance welding. A sealing of the material transfer from the first material to the second material to the contacting element is not required.
  • the type-specific welding of the current-line-system-side section of the contacting element to the cell connector or power connection significantly reduces the scrap content, the requirement for reworking and the risk of errors in relation to a welding of different materials.
  • the first material of the power line system side portion of the contacting element preferably has the same hardness or a slightly higher hardness than the material of the cell connector or power connector.
  • the electrically conductive connection between a signal line and a cell connector or a power connection of the electrochemical device's power line system can be made without sealing a material interface between the contacting element and the cell connector or power connector, with less tool wear, smaller rejects and less rework become.
  • FIG. 1 shows a perspective illustration of a contacting element for establishing an electrically conductive connection between a cell connector or a power connection of a power line system of an electrochemical device on the one hand and a signal line of a signal line system of the electrochemical device on the other hand; a top view of the contacting of FIG. i; a longitudinal section through the contacting element of FIGS. 1 and 2, taken along the line 3 - 3 in Fig. 2; an enlarged view of the area I of FIG. 3; a cross section through a connection region of themaschineticianseiements of FIGS. 1 to 4, taken along the line 5-5 in Fig.
  • FIG. 2 a view of the Kunststofftechnikseiements of FIGS. 1 to 5, with the viewing direction in the direction of arrow 6 in FIG. 2; a schematic representation of a manufacturing method of the Kunststofftechnikseiements of FIGS. 1 to 6, in which such contacting elements are separated from a sheet-like starting material and reshaped;
  • FIG. 8 is an enlarged view of the area II of FIG. 7;
  • FIG. 9 shows a plan view of a contacting element preform cut out of the flat starting material;
  • FIG. 11 shows a perspective view of a carrier element of a cell contacting system for an electrochemical device, in particular an accumulator module, a power line system held on the carrier element, a signal line system held on the carrier element and several embodiments of contacting elements for producing an electrically conductive connection between a cell connector or a cell connector Power connection of the power line system on the one hand and a signal line of the signal line system on the other hand;
  • Fig. 12 is an enlarged view of the area III of Fig. 11;
  • FIG. 13 is a perspective view of an electrochemical device with a housing and a plurality of electrochemical cells arranged therein, wherein the in Fig. 11 shown cell contacting system can be placed on the housing and electrically connected to cell terminals of the electrochemical cells;
  • FIG. 14 is a top plan view of the cell contacting system.
  • a cell contacting system shown as a whole as 100 in FIGS. 11 to 14, comprises a carrier element 102, on which a power line system 104 and a signal line system 106 are held, and a cover element 108, which can be placed on the carrier element 102, as shown in FIG ,
  • the carrier element 102 can be placed on a housing 110 (shown in FIG. 13) of an electrochemical device 112, for example an accumulator module, with a plurality of electrochemical cells 114, in particular accumulator cells, and closes an upper housing opening in the mounted state of the electrochemical device 112, through which cell terminals 116 of the electrochemical cells 114 of the electrochemical device 112 protrude.
  • an electrochemical device 112 for example an accumulator module
  • the carrier element 102 may be formed, for example, in the form of a preferably substantially rectangular carrier plate 118.
  • the carrier element 102 is provided with a plurality of passage openings 120, wherein each passage opening 120 is assigned on the one hand to a contact region 122 of a cell connector 124 or a power connection 126 and on the other hand to a cell terminal 116 of the electrochemical cells 114 of the electrochemical device 112, so that by such Through opening 120 each a cell terminal 116 with an associated contact region 122 of a cell connector 124 or a power connector 126 is connectable.
  • the cell connectors 124 are thus designed as elements which are provided in addition to the cell terminals 116 and which connect the cell terminals 116 and thus the cell poles of the electrochemical cells 114 in an electrically conductive manner.
  • the cell terminals 116 are configured and fixed directly to each other, that they the cell poles of respective electrochemical cells 114 electrically conductively connect to each other and thus themselves (in particular in pairs) form a cell connector 124.
  • a cell terminal 116 can extend through the passage opening 120 in order to come into contact with a contact region 122 of a cell connector 124 or a power connection 126.
  • a contact region 122 of a cell connector 124 or of a power connection 126 can also extend through the respectively assigned passage opening 120 in order to come into contact with the respectively assigned cell terminal 116.
  • both the cell terminal 116 and the contact region 122 of the cell connector 124 or of the power connection 126 both extend into the passage opening 120 and are connected to one another there.
  • the passage openings 120 of the carrier element 102 can be arranged in a plurality of rows 128, wherein the rows 128 extend, for example, in a longitudinal direction 130 of the carrier element 102.
  • This longitudinal direction 130 of the carrier element 102 will also be referred to below as the X direction of the cell contacting system 100.
  • the passage openings 120 may in particular be substantially rectangular, in particular with rounded corner areas; In principle, however, other shapes of the passage openings 120, in particular circular, oval, square or polygonal passages 120, are possible.
  • the cover element 108 is arranged, which serves to cover the power line system 104 and the signal line system 106.
  • the cover element 108 is designed, for example, in the form of a substantially rectangular cover plate 132.
  • the cover element 108 and / or the carrier element 102 preferably comprises a thermoplastic material, for example polypropylene.
  • the cover member 108 and / or the support member 102 is substantially completely formed of a thermoplastic material, such as polypropylene.
  • the cover element 108 is furthermore preferably provided with an edge region 134 which projects circumferentially along an outer edge and projects toward the carrier element 102 in the mounted state of the cell contacting system 100.
  • the edge region 134 of the cover element 108 may be interrupted by two passage channels 136, which project from the edge of the cover element 108, for example in the X direction 130 to the front or to the rear, and may for example have a substantially U-shaped cross section.
  • the carrier element 102 is also preferably provided with an edge region 138 which extends circumferentially along an outer edge and projects toward the cover element 108 in the mounted state of the cell contacting system 100.
  • the edge region 138 of the carrier element 102 may also be interrupted by two passage channels 140, which project from the edge of the carrier element 102, preferably in the X direction 130 to the front or to the rear, and may for example have a substantially U-shaped cross section.
  • the passage channels 140 of the carrier element 102 and the passage channels 136 of the cover element 108 are arranged at mutually corresponding points of the respective edge regions 138 and 134 and facing each other with their open sides, so that the passage channels 140, 136 together each form a passageway 142, which for receiving each one of the power terminals 126 of Zellutton istssystems 100 is used.
  • the power connections 126 and the cell connectors 124 by means of which the cell terminals 116 of respectively two adjacent electrochemical cells 114 of different polarity are electrically conductively connected to one another, together form the power line system 104 of the cell contacting system 100.
  • the power line system 104 serves to facilitate current flow between the electrochemical cells 114 of the electrochemical device 112 and to or from the power terminals 126 of the cell contacting system 100.
  • each cell connector 124 connects a first negative polarity cell terminal 116a of a first electrochemical cell 114a to a second positive polarity cell terminal 116b of an adjacent second electrochemical cell 114b (see FIG. 13).
  • a cell terminal 116c of the electrochemical cell beginning of the cell series connection of the electrochemical device 114c and a cell terminal 116d of the end of the cell series circuit forming electrochemical cell 114d are electrically connected to one of the electrically conductive power terminals 126 of Zelluttonêtssystems 100.
  • a plurality of electrochemical devices 112 each having a cell contact system 100 are preferably connected in series electrically.
  • Such a series connection can be produced, in particular, by electrically connecting a current terminal 126 of a first electrochemical device 112 to an electrical current terminal 126 (opposite polarity) of a second electrochemical device 112 by means of a module connector (not shown).
  • a detent device 144 is preferably provided which comprises one or more detent elements 146 provided on the cover element 108 and one or more detent elements 148 provided on the carrier element 102.
  • the cover-element-side latching elements 146 and the support element-side latching elements 148 are at mutually corresponding points of the edge region 134 of the cover 108 and the edge portion 138 of the Carrier element 102 are arranged and lock together when the cover member 108 is placed on the support member 102, so that the cover 108 is held by means of the latching device 144 releasably on the support member 102.
  • the carrier element 102 is preferably provided at its edge region 138 with a connection recess 150, through which a signal line tree 152 of a plurality of signal lines 154, which are connected to a signal line connection 156, from an interior 158 surrounded by the carrier element 102 and the cover element 108 of cell contacting system 100.
  • the signal line connection 156 is accessible for contacting with a signal line element that is complementary to the signal line connection 156.
  • the signal line terminal 156 may be formed, for example, as a signal line plug.
  • the signal line element formed complementary to the signal line terminal 156 is preferably formed as a signal line socket.
  • the signal line terminal 156 serves to connect the signal line system 106 arranged on the carrier element 102 to a monitoring device (not shown) of the electrochemical device 112 via a (not shown), preferably multi-pole, connecting line.
  • the signal line system 106 is used to connect one or more voltage taps 160 to a cell connector 124 or power connection 126 and / or one or more temperature sensors 162 of the cell contacting system 100 to the signal line connection 156.
  • the signal line system 106 includes the signal lines 154, which in each case electrically connect a signal source 164 to the signal line connection 156 (or directly to a monitoring device of the cell contacting system 100).
  • Each of the contact regions 122 of the cell connectors 124 and each power connection 126 is in each case assigned to a cell terminal 116 of the electrochemical device 112 and, in the mounted state of the electrochemical device 112, electrically connected, preferably cohesively, to the respective associated cell terminal 116.
  • each cell connector 124 comprises two contact regions 122 for electrically contacting each cell terminal 116 and a compensation region 166 connecting the two contact regions 122 with one another.
  • each cell connector 124 may also comprise more than two contact regions 122 for electrically contacting each cell terminal 116.
  • the compensation region 166 is preferably elastically and / or plastically deformable in order to allow a relative movement of the two contact regions 122 of the cell connector 124 relative to each other during operation of the electrochemical device 112 and / or tolerance compensation during assembly of the cell contacting system 100.
  • the compensation region 166 may in particular comprise one or more compensation waves 168 transverse to a connection direction which connects a center of the first contact region 122a to a center of the second contact region 122b of the cell connector 124.
  • Each contact region 122 of a cell connector 124 or of a power connection 126 can be positioned by means of a respective positioning hole 170 on a respectively assigned positioning pin 172 of the carrier element 102.
  • the positioning pin 172 of the carrier element 102 preferably penetrates the respectively assigned positioning hole 170 of the cell connector 124 or of the power connection 126.
  • the carrier element 102 and / or the cover element 108 preferably comprises an electrically non-conductive plastic material, for example PBT (polybutylene terephthalate), PP (polypropylene), PA (polyamide), ABS (acrylonitrile-butadiene-styrene) and / or LCP ("Liquid Crystal Polymer "), and is preferably formed substantially entirely from such a plastic material.
  • PBT polybutylene terephthalate
  • PP polypropylene
  • PA polyamide
  • ABS acrylonitrile-butadiene-styrene
  • LCP Liquid Crystal Polymer
  • a particularly suitable material for the support element 102 is a talc-reinforced polypropylene material (for example, the material designated PPT TV 20). This material has by the talcum reinforcement on a particularly high dimensional stability.
  • At least one signal line 154 of the signal line system 106 is electrically conductively connected to a contacting element 174 which is fixed on the one hand to the relevant signal line 154 and on the other hand to a cell connector 124 or to a power connection 126 of the power line system 104.
  • Each contacting element 174 may be connected to a respectively associated carrier-element-side positioning element 176 in such a way that the contacting element 174 is held by the positioning element 176 in a desired position relative to a cell connector 124 or a power connection 126 of the power line system 104.
  • the position of the contacting element 174 along the X direction 130 and along a Y direction 178 is determined by the interaction of the carrier element side positioning 176 and the contacting 174, wherein the Y direction 178 perpendicular to the X direction 130 of Zellutton istssystems 100, and preferably aligned substantially parallel to a major surface 180 of the support member 102, such that the cell connectors 124 and the power terminals 126 of the cell contacting system 100 are aligned in the direction from the X-direction 130 and the
  • Y-direction 178 spanned plane side by side on the support member 102 are arranged.
  • At least one contact region 182 of the contacting element 174 which in the assembled state of the cell contacting system 100 bears against the respective associated cell connector 124 or power connection 126 and is electrically conductively connected to the same, preferably cohesively, but is preferably arranged relative to the carrier element-side positioning element 176 along a Z axis.
  • Direction 184 while the carrier element-side positioning member 176 defines the position of the contacting element 174 in the plane defined by the X-direction 130 and the Y-direction 178 plane.
  • the Z-direction 184 is oriented perpendicular to the X-direction 130 and perpendicular to the Y-direction 178.
  • the Z direction 184 of the cell contacting system 100 is oriented substantially parallel to the direction along which the cell terminals 116 of the electrochemical cells 114 protrude from the respective cell housing (see FIG. 13).
  • the contacting element 174 comprises a current-conducting-system-side section 186 of an electrically conductive first material and a signal-conducting-system-side section 188 of an electrically conductive second material.
  • the first material and the second material are different from each other.
  • the first material from which the current-conduction system-side portion is formed 186 includes as a main component Al umi ⁇ nium, and / or that the second material is formed from which the sig nal lei ⁇ processing system-side portion 188, as main component copper construed to ⁇ .
  • the signal line system side portion 186 includes the Kon ⁇ contact region 182 of contacting element 174 which contacting system 100 to the respective zugeord Neten Zel l ⁇ connector 124 or Stromanschl uss is applied and the cell in the assembled state 126 demsel ben electrically conductive, preferably stoffschl superfluous, connected is.
  • the signal line system side portion 188 includes an on ⁇ connection area 190 at which the contacting element 174 is electrically conductively connected to the respectively associated Sig nal line 154 connected.
  • the contacting element 174 comprises a connection region 192 which connects the connection region 190 to the contact region 182 and which comprises a plating section 194 in which the current-line system-side section 186 and the signal-line-system-side section 188 of the contacting element 174 are plating, in particular by rolling - Plating, are connected together (see in particular Fig. 4).
  • the sum of the material thickness Di of the current-conducting system-side section 186 of the first material and the material thickness Di of the signal line-side section 188 of the second material is substantially constant over the plating section 194.
  • the contact region 182 of the contacting element 174 is defined, for example, by welding, in particular ultrasonic welding, laser welding or resistance welding, or by soldering to the associated cell connector 124 or current connection 126.
  • the material of the cell connector 124 or the power connection 126 preferably comprises aluminum, in particular aluminum as the main component.
  • connection region 192 may in particular be formed as a deformation region 196 which serves to permit a relative movement of the contact region 182 and the connection region 190 relative to one another during operation of the electrochemical device 112 and / or tolerance output during assembly of the cell-contacting system 100 enable .
  • the deformation region 196 may in particular have one or more waves 200 running transversely to a longitudinal direction 198 of the contacting element 174.
  • Such a shaft 200 allows flexibility of the contacting element 174 in the Z-direction 184.
  • a particularly good flexibility of the deformation region 196 is achieved if the material thickness of the contacting element 174 in the deformation region 196, particularly preferably in the entire main body 202 of the contacting element 174, which is formed from the power line system side portion 186 and the signal line system side portion 188, at most about 0.6 mm, in particular at most about 0.3 mm.
  • connection region 192 of the contacting element 174 has, for example, a substantially U-shaped cross section (taken in the longitudinal direction 198) (see FIG. 3), with a contact-region-side leg 204, a connection-side-side leg 206 and one of the two legs 204 and 206 interconnecting web 208th
  • the carrier element-side positioning element 176 comprises two positioning projections 210, each of which has a guide strip 212 extending in the Z-direction 184 at its front side facing the respective associated cell connector 124 or power connection 126 are .
  • the guide rails 212 have, in a transverse direction 214 of the contacting element 174, a distance G from each other which substantially corresponds to the width B of the contact-area-side leg 204 of the connection region 192 of the contacting element 174, so that the Contacting element 174 is positioned in the desired direction by the carrier-element-side positioning element 176 in the transverse direction 214 and is displaceably guided in the vertical direction 216 perpendicular to the longitudinal direction 198 and the transverse direction 214.
  • the carrier-element-side positioning element 176 is preferably formed integrally with the carrier element 102.
  • the carrier element 102 including the carrier element-side positioning element 176 is produced by an injection molding process.
  • connection region 190 of the contacting element 174 serves to fix the contacting element 174 to the respectively assigned signal line 154.
  • the signal line 154 preferably comprises a plurality of individual conductors or strands, which are surrounded by an insulating jacket or sheath 218 made of an electrically insulating material.
  • this electrically insulating sheath 218 is removed, so that an electrically conductive connection between the individual conductors of the signal line 154 and the contacting element 174 can be produced.
  • the contacting element 174 may in principle be fixed, for example, by welding, in particular by ultrasonic welding, laser welding or resistance welding, by soldering, by crimping and / or by riveting to the associated signal line 154.
  • the end section of the signal line 154 is connected in an electrically conductive manner to the contacting element 174 by crimping by means of a crimping element 220 provided on the connection region 190 of the contacting element 174.
  • end sections of a plurality of signal lines 154 are connected in an electrically conductive manner to the contacting element 174.
  • the crimping element 220 shown in FIG. 12 is formed during the crimping process from a crimping element preform 220 ', which is shown in FIGS. 1 to 3, 5 and 6.
  • the crimping element preform 220 includes two legs 222 which are inclined at an angle to each other and are interconnected by a ridge 224 extending in the longitudinal direction 198 of the contacting element 174.
  • the angle is preferably greater than about 20 ° and / or preferably less than about 45 °.
  • the angle may be, for example, about 30 °.
  • the webs 224 facing away from the free ends of the legs 222 may each be provided with a chamfer 226.
  • the crimping element preform 220 'or the crimping element 220 formed therefrom may be provided with one or more grooves 228 on its inside.
  • a plurality of grooves 228 are provided, in particular at least three grooves 228, more preferably at least four grooves 228, which are spaced apart in the longitudinal direction 198 of the contacting 174 and preferably in the transverse direction 214 and in the height direction 216 of the contacting 174 extend.
  • the grooves 228 increase the adhesion of the end regions of the individual conductors of the signal line 154 to the crimping element 220.
  • the grooves 228 can be produced in particular by embossing in the starting material of the contacting element 174.
  • contacting elements 174 of the type shown in FIGS. 1 to 6 are preferably cut out of a flat starting material, for example stamped out or cut out.
  • a suitable starting material 229 is shown in FIG. 7 and is preferably formed as a ribbon-shaped hybrid material, which comprises a first material portion 230 of the first material for forming the current line system side portion 186 of the contacting 174 and a second material portion 232 of the second material to form the signal line system side portion 188 of the contacting 174 ,
  • first material portion 230 and the second material portion 232 are preferably formed as in the later transverse direction 214 of the contacting 174 extending material strips which overlap each other in the cladding portion 194 and by plating, preferably by roll cladding, in particular by cold roll cladding, are materially interconnected.
  • the sheet-like starting material 229 can in particular be rolled up into a roll of material or coil 234 and stored and / or transported in this form.
  • the sheet-like starting material 229 is withdrawn to produce the contacting elements 174 and fed, for example, to a follow-on composite tool.
  • the progressive compound tool preferably comprises a punching station, at least one forming station and a separating station.
  • the contacting elements 174 succeeding one another in the longitudinal direction of the starting material are separated from one another along the outer edges 238 of the crimping element preforms 220 ', for example by means of a punching tool. Subsequently, the terminal portions 190 of the contacting members 174 are reshaped so that the crimping element preforms 220 'obtain the shape shown in Figs. 1 to 3, 5 and 6.
  • Fig. 11 are in addition to the in Figs. 1 to 6 embodiment of a contacting element 174 and a carrier element-side positioning element 176 shown in more detail, further embodiments of such contacting elements 174 and positioning elements 176 associated with other cell connectors 124 or power connections 126 are shown.
  • any number of copies of any embodiment of the contacting elements 174 and the positioning elements 176 in a cell contacting system 100 can be combined with any number of any other embodiments of such contacting elements 174 or positioning elements 176.
  • the cell contacting system 100 described above is preferably completely pre-assembled as a separate assembly of the electrochemical device 112.
  • the components of the power line system 104 in particular the cell connectors 124 and the power connections 126, as well as one or more temperature sensors 162 with connection elements, for example with connection wires, are positioned on the carrier element 102.
  • the signal lines 154 are connected on the one hand to the signal line connection 156 and on the other side, at their end remote from the signal line connection 156, to the respectively assigned contacting element 174, in particular by crimping, in which the stripped end regions of the signal lines 154 are inserted into the crimp element preforms 220 'of the Takt michs institute 174 are inserted and the crimping element preforms 220 'of the contacting elements 174 in the crimping elements 220, which hold the end portions of the individual conductors of the signal lines 154 by adhesion and / or by positive locking, are transformed.
  • the signal lines 154 of the signal line system 106 are arranged on the carrier element 102 such that the contacting elements 174 are arranged in the desired position on the respective carrier element-side positioning element 176 and optionally fixed thereto, for example by latching.
  • the contact regions 182 of the contacting elements 174 which are positioned in the desired manner relative to the respectively associated cell connector 124 or power connection 126, are electrically conductively connected to the respective cell connector 124 or power connection 126, preferably by material connection, in particular by soldering or by welding, for example by ultrasonic welding, resistance welding or laser welding.
  • the carrier element 102 with the power line system 104 and the signal line system 106 is in the assembly of the electrochemical device 112 mounted on the housing 110, in which the electrochemical cells 114 are arranged, and connected to the housing opening surrounding the edge 110 of the housing.
  • the cell connectors 124 and the power connections 126 are contacted in an electrically conductive manner with the respectively assigned cell terminals 116 of the electrochemical device 112, for example by material connection, in particular by welding, and / or by positive locking.
  • the cover 108 After contacting between the power line system 104 and the cell terminals 116 of the electrochemical cells 114 of the electrochemical device 112, the cover 108 is placed on the support member 102 and connected thereto, in particular by latching, so that the cover 108, the power line system 104 and the signal line system 106 of Cell contacting 100 covers and protects against accidental contact.
  • the assembled electrochemical device 112 may be assembled with a plurality of other electrochemical devices 112, in particular accumulator modules, to form an electrochemical device group, in particular various electrochemical devices 112 being interconnected by means of module connectors (not shown) interconnecting the power terminals 126 of various electrochemical devices 112 can.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

L'invention concerne un élément de mise en contact servant à établir une liaison électroconductrice entre un connecteur de cellules ou une borne de courant d'un système d'acheminement de courant d'un dispositif électrochimique d'une part et un câble de signaux d'un système d'acheminement de signaux du dispositif électrochimique d'autre part. L'invention vise à créer un élément de mise en contact de ce type qui se passe d'une protection supplémentaire contre la corrosion, en particulier de tout scellement d'un raccord de matériaux entre l'élément de mise en contact et le connecteur de cellules ou la borne de courant à relier à ce dernier. L'invention propose à cet effet que l'élément de mise en contact comprenne une portion, située du côté du système d'acheminement de courant, composée d'un premier matériau et une portion, située du côté du système d'acheminement de signaux, composée d'un deuxième matériau. Le deuxième matériau est différent du premier matériau, et la portion située du côté du système d'acheminement de courant et la portion située du côté du système d'acheminement de signaux sont reliées l'une à l'autre par placage.
PCT/EP2018/064099 2017-06-01 2018-05-29 Élément de mise en contact pour un système de mise en contact de cellules pour un dispositif électrochimique et procédé servant à fabriquer un système de mise en contact de cellules pour un dispositif électrochimique Ceased WO2018219966A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017112125.0 2017-06-01
DE102017112125.0A DE102017112125A1 (de) 2017-06-01 2017-06-01 Kontaktierungselement für ein Zellkontaktierungssystem für eine elektrochemische Vorrichtung und Verfahren zum Herstellen eines Zellkontaktierungssystems für eine elektrochemische Vorrichtung

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WO2018219966A1 true WO2018219966A1 (fr) 2018-12-06

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WO (1) WO2018219966A1 (fr)

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DE102021121157A1 (de) 2021-01-04 2022-07-07 Elmos Semiconductor Se Verfahren zum Betrieb eines trilaterationsbasierenden Ultraschallsensorsystems mit Kalman-Filterung und Lösungsclusterung
WO2023016592A1 (fr) 2021-08-13 2023-02-16 Elmos Semiconductor Se Système de capteurs ultrasonores à base de trilatération, à filtrage de kalman et à groupement de solutions

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DE102018208340B4 (de) 2018-05-28 2025-05-08 Bayerische Motoren Werke Aktiengesellschaft Zellkontaktieranordnung für ein Energiespeichermodul und Verfahren zum Kontaktieren von Energiespeicherzellen eines Energiespeichermoduls
DE102018221950A1 (de) * 2018-12-17 2020-06-18 BINDER tecsys GmbH Verfahren zur Herstellung und Positionierung elektrischer Verbinder

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DE102014210327A1 (de) * 2014-06-02 2015-12-03 Robert Bosch Gmbh Elektrischer Zellverbinder für ein Batteriemodul
DE102014116866A1 (de) * 2014-11-18 2016-05-19 Elringklinger Ag Verfahren zum Herstellen einer elektrisch leitenden Verbindung zwischen einer elektrischen Leitung undeinem elektrisch leitenden Bauteil sowie Baugruppe

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DE102013201556B4 (de) * 2013-01-30 2014-11-20 Magna Steyr Battery Systems Gmbh & Co Og Batteriesystem mit einem Kontaktelement

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DE102013207358A1 (de) * 2013-04-23 2014-10-23 Elringklinger Ag Zellkontaktierungssystem für eine elektrochemische Vorrichtung
DE102014210327A1 (de) * 2014-06-02 2015-12-03 Robert Bosch Gmbh Elektrischer Zellverbinder für ein Batteriemodul
DE102014116866A1 (de) * 2014-11-18 2016-05-19 Elringklinger Ag Verfahren zum Herstellen einer elektrisch leitenden Verbindung zwischen einer elektrischen Leitung undeinem elektrisch leitenden Bauteil sowie Baugruppe

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Publication number Priority date Publication date Assignee Title
DE102021121157A1 (de) 2021-01-04 2022-07-07 Elmos Semiconductor Se Verfahren zum Betrieb eines trilaterationsbasierenden Ultraschallsensorsystems mit Kalman-Filterung und Lösungsclusterung
DE102021121155A1 (de) 2021-01-04 2022-07-07 Elmos Semiconductor Se Trilaterationsbasierendes Ultraschallsensorsystem mit Kalman-Filterung und Lösungsclusterung
DE102021121156A1 (de) 2021-01-04 2022-07-07 Elmos Semiconductor Se Verfahren zum Betrieb eines Trilaterationsbasierendes Ultraschallsensorsystems mit Kalman-Filterung und Lösungsclusterung
WO2023016592A1 (fr) 2021-08-13 2023-02-16 Elmos Semiconductor Se Système de capteurs ultrasonores à base de trilatération, à filtrage de kalman et à groupement de solutions

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