SE2351202A1 - Cell connection assembly - Google Patents
Cell connection assemblyInfo
- Publication number
- SE2351202A1 SE2351202A1 SE2351202A SE2351202A SE2351202A1 SE 2351202 A1 SE2351202 A1 SE 2351202A1 SE 2351202 A SE2351202 A SE 2351202A SE 2351202 A SE2351202 A SE 2351202A SE 2351202 A1 SE2351202 A1 SE 2351202A1
- Authority
- SE
- Sweden
- Prior art keywords
- battery
- terminal
- battery cells
- connection assembly
- cell connection
- Prior art date
Links
Classifications
-
- 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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
-
- 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
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery 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
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
-
- 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
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/514—Methods for interconnecting adjacent batteries or cells
- H01M50/516—Methods for interconnecting adjacent batteries or cells by welding, soldering or brazing
-
- 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
- H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The present disclosure relates to cell connection assemblies for electrically coupling positive and negative terminals of an arrangement of a plurality of battery cells. The disclosure also relates to a method of electrically coupling a cell connection assembly with positive and negative terminals of an arrangement of a plurality of battery cells, and a battery-terminal-connecting layer for forming part of a cell connection assembly.
Claims (30)
1. A cell connection assembly for electrically coupling positive and negative terminals of an arrangement of a plurality of battery cells, the cell connection assembly comprising a laminated structure of a plurality of layers comprising at least: a first battery-terminal-connecting layer comprising an electrically conductive current collector arranged in a first plane for coupling the battery cells via connection to a positive or a negative terminal of the battery cells; a second battery-terminaI-connecting layer comprising an electrically conductive current collector arranged in a second plane for coupling the battery cells via connection to a positive or a negative terminal different from the positive or negative terminals to which the first battery-terminaI-connecting layer is configured for connection; a first insulation layer comprising an electrical insulator, arranged between the first battery-terminal-connecting layer and the second battery- terminal-connecting layer, in a third plane; wherein the laminated structure includes a plurality of windows each providing an opening in the laminated structure, each window configured to align with one or more battery cells of the plurality of battery cells when the cell connection assembly is placed adjacent the arrangement; wherein the current collector of the first battery-terminal-connecting layer includes a plurality of tabs, each tab comprising a flexible projection configured to project into one of the plurality of windows to electrically couple to a different, respective terminal of the one or more battery cells aligned with that window, the flexible projection configured to be pressed out of the first plane to secure it to the respective terminal; and wherein the current collector of the second battery-terminal-connecting layer includes a plurality of tabs, each tab comprising a flexible projection configured to project into one of the plurality of windows to electrically couple to a different, respective terminal of the one or more battery cells aligned with that window, the flexible projection configured to be pressed out of the second plane to secure it to the respective terminal.
2. The cell connection assembly of claim 1, wherein the tabs are each configured to flex when pressed against a respective terminal and are configured for laser welding thereto through the window.
3. The cell connection assembly of claim 1 or claim 2, wherein the laminated structure comprises one or both of: a second insulation layer comprising an electrical insulator arranged adjacent the first battery-terminal-connecting layer and opposed the first insulation layer; and a third insulation layer comprising an electrical insulator arranged adjacent the second battery-terminal-connecting layer and opposed the first insulation layer.
4. The cell connection assembly of any preceding claim, wherein one of the first and second battery-terminaI-connecting layers comprises a first main connector that extends out from the laminated structure to provide a negative terminal for the plurality of battery cells that are electrically connected by the cell connection assembly; and one of the first and second battery-terminaI-connecting layers comprises a second main connector that extends out from the laminated structure to provide the positive terminal for the plurality of battery cells that are electrically connected by the cell connection assembly.
5. The cell connection assembly of claim 4, wherein the first main connector and the second main connector extend from a common edge of the laminated structure of the cell connection assembly.
6. The cell connection assembly of claim 5, wherein the first main connector and the second main connector extend from the common edge in a first direction for securement to further parts and at least a subset of the plurality of tabs are configured to project into their respective windows at an angle greater than 30 degrees from the first direction.
7. The cell connection assembly of any preceding claim, wherein the at least first and second battery-terminal-connecting layers provide for electrical 33connection to all terminals of the plurality of battery cells at a single side of the arrangement of the plurality of battery cells.
8. The cell connection assembly of any preceding claim, wherein one or both of: the current collector of the first battery-terminal-connecting layer comprises a first row part and a separate, second row part arranged side-by- side in the first plane, wherein the first row part and the second row part are connected at a first end of the first battery-terminal-connecting layer by a first connector layer, the first connector layer comprising an electrically conductive, substantially U-shaped member extending substantially perpendicular to the first plane; and the current collector of the second battery-terminal-connecting layer comprises a first row part and a separate, second row part arranged side-by- side in the second plane, wherein the first row part and the second row part are connected at a first end of the second battery-terminal-connecting layer by a second connector layer, the second connector layer comprising an electrically conductive, substantially U-shaped member extending substantially perpendicular to the second plane.
9. The cell connection assembly of claim 8, wherein, respectively, one or both of: one or more of the first row part of the first battery-terminal-connecting layer, the second row part of the first battery-terminal-connecting layer, and the first connector layer, include cut-outs or notches to increase electrical resistance in a region to control current density when current flows between the first row and the second row through the first connector layer; one or more of the first row part of the second battery-terminal- connecting layer, the second row part of the second battery-terminal- connecting layer, and the second connector layer, include one or more cut-outs or notches to increase the electrical resistance in a region to control current density when current flows between the first row and the second row through the second connector layer.
10. The cell connection assembly of any preceding claim, wherein the plurality of tabs of the first battery-terminal-connecting layer and the plurality of tabs of the second battery-terminal-connecting layer are one or both of a positive tab type and a negative tab type, wherein the positive tab type is configured to couple to the positive terminal of the plurality of battery cells and the negative tab type is configured to couple to the negative terminal of the plurality of battery cell.
11. The cell connection assembly of claim 10, wherein the positive tab type comprises an elongate arm projecting into the window and a head at the distal end of the elongate arm to electrically couple to the positive terminal.
12. The cell connection assembly of claim 10 or claim 11, wherein the negative tab type comprises an arcuate finger projecting into the window to electrically couple to the negative terminal, wherein the plurality of battery cells comprise cylindrical cells and the negative terminal comprise a ring- shaped edge of a can of said cylindrical cells.
13. The cell connection assembly of claim 12, wherein the arcuate finger includes one or more tapers along its length configured to reveal parts of the ring-shaped edge of the can when viewed through the windows.
14. The cell connection assembly of any preceding claim, wherein the plurality of battery cells comprises cylindrical cells and each of the windows is sized and arranged to reveal at least part of a circular edge of the negative terminal of said cylindrical cells.
15. The cell connection assembly of claim 10, wherein: the current collector of the first battery-terminal-connecting layer comprises a plurality of separate sub-collectors in the first plane, wherein at least one of the sub-collectors comprises a plurality of tabs of positive tab type for electrically coupling to the positive terminals of a first parallel subset of battery cells of the plurality of battery cells and a plurality of tabs of negative tab type for electrically coupling to the negative terminals of a second parallel subset of battery cells, and 35the current collector of the second battery-terminal-connecting layer comprises a plurality of separate sub-collectors in the second plane, wherein at least one of the sub-collectors comprises a plurality of tabs of positive tab type for electrically coupling to the positive terminals of said second parallel subset of battery cells and a plurality of tabs of negative tab type for electrically coupling to the negative terminals of a third parallel subset of battery cells.
16. A method of electrically coupling a cell connection assembly with positive and negative terminals of an arrangement of a plurality of battery cells, the method comprising: receiving the arrangement of the plurality of battery cells; receiving a cell connection assembly ofany preceding claim and aligning the cell connection assembly relative to the arrangement of the plurality of battery cells; applying a pressing apparatus through the plurality of windows to press the plurality of tabs of the first battery-terminal-connecting layer out of the first plane and the plurality of tabs of the second battery-terminaI-connecting layer out of the second plane and to press the tabs of the first and second battery-terminal-connecting layers against respective positive and negative terminals of the plurality of battery cells; and actuating a laser welder to weld the tabs to the respective positive and negative terminals.
17. The method of claim 16, wherein the method includes actuating the laser welder to align itself for performing said weld based on one or more captured images of each of the battery cells as viewed through the windows.
18. The method of claim 16, wherein said plurality of battery cells comprises cylindrical cells and the step of actuating the laser welder to align itself comprises aligning based on one or more captured images of each of the battery cells as viewed through the windows and automatic identification of at least part of a circular edge of an end of said cylindrical cells.
19. A battery-terminal-connecting layer for forming part ofa cell connection assembly for electrically coupling positive and negative terminals of an 36arrangement of a plurality of battery cells, the battery-terminal-connecting layer comprising: an electrically conductive current collector arranged in a first plane for coupling to one of the positive and negative terminals or both positive and negative of the battery cells, the current collector comprising a first row part and a separate, second row part arranged side-by-side in the first plane; and an electrically conductive connector layer connecting the first row part and the second row part at a first end of the first battery-terminal-connecting layer, the connector layer extending substantially perpendicular to the first plane.
20. The battery-terminal-connecting layer of claim 19, wherein the connector layer comprises a substantially U-shaped member.
21. The battery-terminal-connecting layer of claim 19 or claim 20, wherein one or more of the first row part, the second row part and the connector layer, include cut-outs or notches to increase the electrical resistance in a region to control current density when current flows between the first row and the second row through the connector layer.
22. A cell connection assembly for electrically coupling positive and negative terminals of an arrangement of a plurality of battery cells, the cell connection assembly comprising a laminated structure of a plurality of layers comprising at least: a first battery-terminal-connecting layer comprising an electrically conductive current collector arranged in a first plane for coupling to one of the positive and negative terminals or both positive and negative terminals of the battery cells, and a first main connector that extends out from the laminated structure to provide a positive terminal for the plurality of battery cells that are electrically connected by the cell connection assembly; wherein the laminated structure includes a plurality of windows each providing an opening in the laminated structure, each window configured to align with one or more battery cells of the plurality of battery cells when the cell connection assembly is placed adjacent the arrangement; 37wherein the current collector of the first battery-terminal-connecting layer includes a plurality of tabs, each tab comprising a flexible projection configured to project into one of the plurality of windows to electrically couple to a different, respective terminal of the one or more battery cells aligned with that window; and wherein the first main connector extends from the laminated structure in a first direction for securement to further parts and at least a subset of the plurality of tabs are configured to project into their respective windows at an angle greater than 30 degrees from the first direction.
23. The cell connection assembly of claim 22, wherein the subset of the plurality of tabs are configured to project into their respective windows at an angle of between 30 and 150 degrees to the first direction.
24. A cell connection assembly for electrically coupling positive and negative terminals of an arrangement of a plurality of battery cells, the cell connection assembly comprising a laminated structure of a plurality of layers comprising at least: a first battery-terminal-connecting layer comprising an electrically conductive current collector arranged in a first plane for coupling to one of the positive and negative terminals or both positive and negative terminals of the battery cells, and a first main connector that extends out from the laminated structure to provide a positive terminal for the plurality of battery cells that are electrically connected by the cell connection assembly; wherein the laminated structure includes a plurality of windows each providing an opening in the laminated structure, each window configured to align with one or more battery cells of the plurality of battery cells when the cell connection assembly is placed adjacent the arrangement; wherein the current collector of the first battery-terminal-connecting layer includes a plurality of tabs, each tab comprising a flexible projection configured to project into one of the plurality of windows to electrically couple to a different, respective terminal of the one or more battery cells aligned with that window, the flexible projection configured to be pressed out of the first plane to secure it to the respective terminal; and 38wherein the plurality of battery cells comprises cylindrical cells and each of the windows is sized and arranged to reveal at least part of a circular edge of an end of said cylindrical cells.
25. The cell connection assembly of claim 24, wherein the plurality of tabs of the first battery-terminal-connecting layer and the plurality of tabs of the second battery-terminal-connecting layer are one or both of a positive tab type and a negative tab type, wherein the positive tab type is configured to couple to the positive terminal of the plurality of battery cells and the negative tab type is configured to couple to the negative terminal of the plurality of battery cell.
26. The cell connection assembly of claim 25, wherein the negative tab type comprises an arcuate finger extending from either the respective battery- terminal-connecting layer into the window to electrically couple to the negative terminal, wherein the plurality of battery cells comprise cylindrical cells and the negative terminal comprise a ring-shaped edge ofa can of said cylindrical cells.
27. The cell connection assembly of claim 26, wherein the arcuate finger includes one or more tapers along its length configured to reveal parts of the ring-shaped edge of the can when viewed through the windows.
28. A cell connection assembly for electrically coupling positive and negative terminals of an arrangement of a plurality of battery cells, the cell connection assembly comprising a laminated structure of a plurality of layers comprising at least: a first battery-terminal-connecting layer comprising an electrically conductive current collector arranged in a first plane, the current collector comprising a plurality of separate sub-collectors in the first plane, wherein at least one of the sub-collectors comprises a plurality of tabs of positive tab type for electrically coupling to the positive terminals of a first parallel subset of battery cells of the plurality of battery cells and a plurality of tabs of negative tab type for electrically coupling to the negative terminals of a second parallel subset of battery cells; 39a second battery-terminaI-connecting layer comprising an electrically conductive current collector arranged in a second plane, the current collector comprising a plurality of separate sub-collectors in the second plane, wherein at least one of the sub-collectors comprises a plurality of tabs of positive tab type for electrically coupling to the positive terminals of the second parallel subset of battery cells and a plurality of tabs of negative tab type for electrically coupling to the negative terminals of third parallel subset of battery cells; a first insulation layer comprising an electrical insulator, arranged between the first battery-terminal-connecting layer and the second battery- terminal-connecting layer in a third plane; wherein the laminated structure includes a plurality of windows each providing an opening in the laminated structure, each window configured to align with one or more battery cells of the plurality of battery cells when the cell connection assembly is placed adjacent the arrangement and enable access to respectively aligned tabs of the first and second battery-terminal-connecting layers.
29. A battery system comprising: the cell connection assembly of any of claims 1 to 15 and 22 to 28; or the battery-terminal-connecting layer of any of claims 19 to
30. A vehicle including a battery system comprising: the cell connection assembly of any of claims 1 to 15 and 22 to 28; or the battery-terminal-connecting layer of any of claims 19 to 21.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE2351202A SE2351202A1 (en) | 2023-10-19 | 2023-10-19 | Cell connection assembly |
| PCT/EP2024/079479 WO2025083198A2 (en) | 2023-10-19 | 2024-10-18 | Cell connection assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE2351202A SE2351202A1 (en) | 2023-10-19 | 2023-10-19 | Cell connection assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SE2351202A1 true SE2351202A1 (en) | 2025-04-20 |
Family
ID=93432109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE2351202A SE2351202A1 (en) | 2023-10-19 | 2023-10-19 | Cell connection assembly |
Country Status (2)
| Country | Link |
|---|---|
| SE (1) | SE2351202A1 (en) |
| WO (1) | WO2025083198A2 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180190960A1 (en) * | 2016-12-29 | 2018-07-05 | Romeo Systems, Inc. | Systems and methods for battery structure, interconnects, sensing, and balancing |
| US20190081310A1 (en) * | 2017-09-12 | 2019-03-14 | Sf Motors, Inc. | Ribbonbond interconnects for electric vehicle battery blocks |
| US20190081308A1 (en) * | 2017-09-12 | 2019-03-14 | Sf Motors, Inc. | Electric vehicle battery current collector |
| US20190280267A1 (en) * | 2016-12-09 | 2019-09-12 | Samsung Sdi Co., Ltd. | Battery pack |
| US20200274184A1 (en) * | 2019-02-26 | 2020-08-27 | Tiveni Mergeco, Inc. | Contact plate arrangement with three or more contact plate layers |
| US20230046621A1 (en) * | 2021-08-13 | 2023-02-16 | Canoo Technologies Inc. | Single conductor layer cell-to-cell interconnect for electric vehicle power supply or other power supply |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10431802B2 (en) * | 2016-10-14 | 2019-10-01 | Inevit Llc | Battery module including a heat pipe positioned in proximity to a terminal component at a positive or negative terminal of the battery module |
| KR20230089842A (en) * | 2021-12-14 | 2023-06-21 | 경상국립대학교산학협력단 | Battery pack and a manufacturing method using the same |
-
2023
- 2023-10-19 SE SE2351202A patent/SE2351202A1/en unknown
-
2024
- 2024-10-18 WO PCT/EP2024/079479 patent/WO2025083198A2/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190280267A1 (en) * | 2016-12-09 | 2019-09-12 | Samsung Sdi Co., Ltd. | Battery pack |
| US20180190960A1 (en) * | 2016-12-29 | 2018-07-05 | Romeo Systems, Inc. | Systems and methods for battery structure, interconnects, sensing, and balancing |
| US20190081310A1 (en) * | 2017-09-12 | 2019-03-14 | Sf Motors, Inc. | Ribbonbond interconnects for electric vehicle battery blocks |
| US20190081308A1 (en) * | 2017-09-12 | 2019-03-14 | Sf Motors, Inc. | Electric vehicle battery current collector |
| US20200274184A1 (en) * | 2019-02-26 | 2020-08-27 | Tiveni Mergeco, Inc. | Contact plate arrangement with three or more contact plate layers |
| US20230046621A1 (en) * | 2021-08-13 | 2023-02-16 | Canoo Technologies Inc. | Single conductor layer cell-to-cell interconnect for electric vehicle power supply or other power supply |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2025083198A2 (en) | 2025-04-24 |
| WO2025083198A3 (en) | 2025-06-26 |
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