CCS assembly and battery module

Abstract

The present application provides a CCS assembly and a battery module. The CCS assembly comprises: an insulating film; and a busbar assembly comprising output bars, connecting bars, and positioning plates, wherein the two output bars are correspondingly arranged at the two ends of a battery module in the length direction; the plurality of connecting bars are arranged between the two output bars; in the same end of the battery module in the length direction, the output bars are at least partially supported on the correspondingly arranged positioning plates, and the positioning plates extend towards the connecting bars adjacent to the output bars; the insulating film is at least arranged on the side of the busbar assembly facing a battery cell, and the busbar assembly is connected to the insulating film.

Description

CCS components and battery modules

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on September 12, 2023 with application number 2023224779214 and the Chinese patent application filed with the China Patent Office on September 12, 2023 with application number 2023111725808, the entire contents of the above applications are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of battery technology, and in particular to a CCS component and a battery module. Background Art

[0003] In the related art, the CCS component of a cylindrical power battery module usually includes two output rows and a plurality of connecting rows arranged between the two output rows. The connecting rows include a plurality of conductive units, each of which includes a positive electrode portion and a negative electrode portion that are interconnected. The conductive unit is used to connect two adjacent battery cells in series. Specifically, the positive electrode portion of the conductive unit is connected to the positive terminal of one of the battery cells, and the negative electrode portion of the same conductive unit is connected to the negative terminal of the other battery cell. The plurality of connecting rows are arranged along the length direction of the battery module. In order to integrate the CCS components, the output rows and the connecting rows are usually integrated on a plastic bracket. However, with the development of the CTP or CTB trend of the battery system, the length of the battery module has gradually increased, which makes it difficult for conventional plastic brackets to adapt to the integration needs of the output rows and the connecting rows in terms of length. At the same time, the long-length plastic bracket has the defects of high mold opening cost, difficult to control processing accuracy, and difficult to control the matching of the dimension chain. Technical issues

[0004] The present application aims to solve the following technical problems: how to reduce the production cost of CCS components, and how to enhance the strength or rigidity of CCS components to facilitate subsequent transportation and processing of CCS components. Technical Solutions

[0005] In the first aspect, the present application provides a CCS component, which is applied to a battery module, comprising: an insulating film; a busbar group, comprising an output bar, a connecting bar and a positioning plate, wherein the two output bars are correspondingly arranged at the two ends of the battery module in the length direction; a plurality of connecting bars are arranged between the two output bars; at the same end in the length direction of the battery module, the output bar is at least partially supported on the corresponding positioning plate, and the positioning plate extends toward the connecting bar adjacent to the output bar; the insulating film is at least arranged on the side of the busbar group facing the battery cell, and the busbar group is connected to the insulating film.

[0006] In a second aspect, the present application provides a battery module, comprising a battery cell and the above-mentioned CCS assembly, wherein the battery cell is connected to the busbar group through the insulating film and the positioning plate. Beneficial effects

[0007] (1) This application can effectively reduce production costs by integrating the busbar group, namely the output busbar, the connecting busbar and the positioning plate, on the insulating film. At the same time, the insulating film is easy to cut, and it is easy to control the processing accuracy when applied to long-length battery modules, which is convenient for the arrangement and adjustment of the busbar group and has low processing difficulty.

[0008] (2) The positioning plates of the present application are located at the two ends of the CCS assembly in the length direction of the battery module, and can provide auxiliary support for the CCS assembly, thereby enhancing the strength or rigidity of the CCS assembly to a certain extent, and facilitating the subsequent transportation and processing of the CCS assembly.

[0009] (3) In the present application, the insulating film provided on the side of the busbar group facing the battery cell can effectively insulate the busbar group and the battery cell, thereby preventing the battery cell from short circuiting. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] FIG1 is a schematic diagram of a top view of a CCS assembly provided in an embodiment of the present application;

[0011] FIG2 is a schematic diagram of the three-dimensional structure of the CCS assembly provided in an embodiment of the present application;

[0012] FIG3 is a schematic diagram of the exploded structure of a CCS assembly provided in an embodiment of the present application;

[0013] FIG4 is a schematic diagram of the three-dimensional structure of a busbar group provided in an embodiment of the present application;

[0014] FIG5 is a schematic diagram of the three-dimensional structure of the negative electrode positioning plate provided in an embodiment of the present application;

[0015] FIG6 is a schematic diagram of the three-dimensional structure of the positive electrode positioning plate provided in an embodiment of the present application;

[0016] FIG7 is a schematic diagram of the three-dimensional structure of the negative electrode output row provided in an embodiment of the present application;

[0017] FIG8 is a schematic front view of the structure of the negative electrode output row provided in an embodiment of the present application;

[0018] FIG9 is a schematic diagram of the three-dimensional structure of the positive electrode output row provided in an embodiment of the present application;

[0019] FIG10 is a schematic front view of the structure of the positive electrode output row provided in an embodiment of the present application;

[0020] FIG11 is a schematic diagram of the connection structure between the FPC and the insulating film provided in an embodiment of the present application;

[0021] FIG12 is a schematic diagram of the three-dimensional structure of the battery cell provided in an embodiment of the present application.

[0022] Icons: 1. CCS assembly; 10a. Negative output row; 10b. Positive output row; 10c. Connecting row; 11. External connecting portion; 12. Internal connecting portion; 121. Main body; 122. Extension portion; 123a. Negative connecting piece; 123b. Positive connecting piece; 124. Bend portion; 125. Third positioning hole; 13. Conductive unit; 131. Positive portion; 132. Negative portion; 20. Battery cell; 201. Positive terminal; 202. Negative terminal; 30a, negative electrode positioning plate; 30b, positive electrode positioning plate; 31, main board; 311, second fillet; 32, connecting protrusion; 321, first fillet; 33, electrode hole; 34, first positioning hole; 4, insulating film; 401, base film; 402, adhesive layer; 41, second welding hole; 42, second positioning hole; 5, FPC; 501, PI layer; 502, base material layer; 51, collection nickel sheet; 52, NTC; 6, connector. Modes for Carrying Out the Invention

[0023] Referring to Figures 1 to 12, a CCS assembly includes an insulating film 4 and a busbar assembly, wherein the busbar assembly includes output bars, connecting bars 10c, and positioning plates. Specifically, as shown in Figures 3 and 4, two output bars are correspondingly disposed at two ends of the battery module in the longitudinal direction (i.e., the longitudinal direction a of the CCS assembly); a plurality of connecting bars 10c are arranged between the two output bars; at the same end in the longitudinal direction of the battery module, the output bars are at least partially supported on corresponding positioning plates, which extend toward the connecting bars 10c adjacent to the output bars; the insulating film 4 is at least disposed on the side of the busbar assembly facing the battery cells 20, and the busbar assembly is connected to the insulating film 4, i.e., the output bars, connecting bars 10c, and positioning plates are all connected to the insulating film 4. In this embodiment, by integrating the busbar assembly, i.e., the output bars, connecting bars 10c, and positioning plates, on the insulating film 4, production costs can be effectively reduced. Furthermore, the insulating film 4 is easy to cut, making it easy to control processing accuracy when applied to long battery modules, facilitating the arrangement and adjustment of the busbar assembly, and reducing processing difficulty. The positioning plates are located at both ends of the CCS assembly 1 along the length of the battery module, providing auxiliary support for the CCS assembly 1 and enhancing its strength and rigidity to a certain extent, facilitating its subsequent transport and processing. The insulating film 4, located on the side of the busbar assembly facing the battery cells 20, effectively insulates the busbar assembly from the battery cells 20, preventing short circuits in the battery cells 20.

[0024] In this embodiment, as shown in Figures 2 and 4, the output row includes a positive output row 10b and a negative output row 10a, wherein the positive output row 10b is located at the positive output end of the battery module, and the negative output row 10a is located at the negative output end of the battery module. The output row is provided with connecting pieces of the same number as the conductive units 13 constituting a single connecting row 10c, wherein the connecting piece on the negative output row 10a is a negative connecting piece 123a, which is used to connect to the negative end 202 of the battery cell 20 located at the negative output end of the battery module, and the connecting piece on the positive output row 10b is a positive connecting piece 123b, which is used to connect to the positive end 201 of the battery cell 20 located at the positive output end of the battery module.

[0025] Furthermore, a second welding hole 41 is formed through the insulating film 4, through which the positive electrode portion 131 and the negative electrode portion 132 of the conductive unit 13 pass to abut against the battery cell 20. This arrangement ensures that the side of the busbar assembly near the battery cell 20, excluding the positive electrode portion 131 and the negative electrode portion 132 of the conductive unit 13, is effectively insulated, ensuring the safety of the battery module while not affecting the welding between the conductive unit 13 and the battery cell 20.

[0026] In this embodiment, the positioning plate is a plastic plate. The insulating film 4 includes but is not limited to a hot melt adhesive film.

[0027] In this embodiment, the insulating film 4 includes a base film 401 and an adhesive layer 402. The adhesive layer 402 is disposed toward the busbar assembly. Furthermore, the base film 401 is made of PET. The thickness of the base film 401 is D1, where 0 μm < D1 ≤ 150 μm; the thickness of the adhesive layer 402 is D2, where 0 μm < D2 ≤ 50 μm.

[0028] Furthermore, the busbar group is bonded or hot-pressed to the insulating film 4. Preferably, the busbar group is hot-pressed to the insulating film 4.

[0029] As shown in Figures 3, 4, 7 to 10, the output row includes an internal connection portion (12) and an external connection portion 11, the external connection portion 11 is connected to the internal connection portion (12), and the two are separately arranged; the thickness of the external connection portion 11 is greater than the thickness of the internal connection portion (12); the positioning plate abuts against a side of the internal connection portion (12) facing the battery cell 20 in the thickness direction thereof. The positioning plate abutting against the inner connecting portion (12) can support the inner connecting portion (12) with a small thickness, thereby improving the structural strength of the inner connecting portion (12) and effectively preventing the inner connecting portion (12) from being deformed during the transportation of the CCS assembly 1. At the same time, the processing technology of the output busbar composed of the separated outer connecting portion 11 and the inner connecting portion (12) is simple and the production cost is low. Moreover, the structural design in which the thickness of the outer connecting portion 11 is greater than the thickness of the inner connecting portion (12) can effectively improve the structural strength of the output busbar, thereby improving the reliability of the connection structure between the two when the modules are connected in series. At the same time, the inner connecting portion (12) with a small thickness is convenient for welding with the battery cell 20, while the outer connecting portion 11 with a large thickness can ensure the overcurrent capacity of the output busbar.

[0030] In this embodiment, the inner connecting portion (12) is integrally stamped and formed. The inner connecting portion (12) is welded to the outer connecting portion 11. In this embodiment, the connecting piece is a part provided on the inner connecting portion (12).

[0031] As shown in Figures 7 to 10, the internal connection portion (12) includes a main body 121, which is connected to the external connection portion 11; an extension portion 122 is provided on the side of the main body 121 away from the external connection portion 11, and the extension portion 122 is used to connect to the positive terminal 201 or the negative terminal 202 of the battery cell 20, and the positioning plate abuts against the extension portion 122. Specifically, the free end of the extension portion 122 of the positive output row 10b is connected to the positive terminal 201 of the battery cell 20; the free end of the extension portion 122 of the negative output row 10a is connected to the negative terminal 202 of the battery cell 20. The extension portion 122 is part of the internal connection portion (12). The extension direction of the extension portion 122 here is parallel to the extension direction of the main body 121, and the extension portion 122 is connected to the main body 121 through the bending portion 124. Furthermore, the main body 121, the bending portion 124 and the extension portion 122 are integrally formed to form the internal connection portion (12). In this embodiment, the external connection portion 11 is arranged in the area of ​​the main body 121. The external connection portion 11 can play a role in increasing the structural strength of the main body 121, and the positioning plate abutting the extension portion 122 can play a role in increasing the structural strength of the extension portion 122, thereby improving the structural strength of the internal connection portion (12) as a whole, and at the same time improving the flow capacity of the output row. The structural arrangement of the positioning plate abutting the extension portion 122 can balance the structural strength of each area of ​​the internal connection portion (12) on the basis of the external connection portion 11 increasing the structural strength of the main body 121. In this embodiment, the number of extension portions 122 is equal to the number of connecting plates, and the connecting plates are arranged one by one at the end of the extension portion 122 away from the external connection portion 11. It should be noted that in this embodiment, the connecting plate serves as the free end of the extension portion 122.

[0032] Of course, in another embodiment, the positioning plate can also be attached to the surface of the inner connecting portion (12) extending toward the battery cell 20, and the positioning plate at least partially abuts the extension portion 122, the bending portion 124 and the main body 121.

[0033] In this embodiment, as shown in Figures 3 to 6 , the positioning plate is located between the extension portion 122 and the battery cell 20. The positioning plate includes a main plate 31. A connecting protrusion 32 is provided on the side of the main plate 31 facing the extension portion 122. The connecting protrusion 32 is supported on the extension portion 122. The connecting protrusion 32 is located away from the free end of the extension portion 122 in the direction in which the extension portion 122 extends. In other words, the connecting protrusion 32 is located near the side of the external connection portion 11. In other words, the base of the extension portion 122 is supported on the connecting protrusion 32. Such a setting can make the position of the extension part 122 supported by the positioning plate closer to the side of the external connection part 11, and can avoid the positioning plate from excessively supporting the extension part 122 and weakening its ability to bend toward the side of the battery cell 20 or away from the battery cell 20. That is, the structural design of the connecting protrusion 32 arranged near the side of the external connection part 11 can support the extension part 122 to strengthen its structural strength while not affecting its deformation ability toward the battery cell 20 or away from the battery cell 20, thereby facilitating the subsequent connection between the extension part 122 structure and the battery cell 20 and avoiding cold welding between the two.

[0034] As shown in Figures 5 and 6 , this embodiment provides a negative electrode positioning plate 30a and a positive electrode positioning plate 30b. These plates function identically, and their external shapes can be designed to adapt to the shapes of the negative and positive electrode output banks 10a and 10b, respectively, without specific limitations. It should be noted that the positive electrode positioning plate 30b is located on the side of the positive electrode output bank 10b, while the negative electrode positioning plate 30a is located on the side of the negative electrode output bank 10a.

[0035] In this embodiment, an electrode hole 33 is provided through the mainboard 31. The free end (connecting piece) of the extension 122 is connected to the positive terminal 201 or the negative terminal 202 of the battery cell 20 through the electrode hole 33. It should be noted that the electrode hole 33 is used to expose the positive terminal 201 and the negative terminal 202 of the battery cell 20 adjacent to the output row, and the electrode hole 33 is provided corresponding to the second welding hole 41 on the insulating film 4 near the output row. When the CCS assembly 1 and the battery cell 20 are assembled, the electrode hole 33 facilitates the positioning and assembly of the CCS assembly 1 and the battery cell 20 in the battery module, effectively improving the assembly efficiency and precision of the CCS assembly 1.

[0036] As shown in Figures 1 to 3, in this embodiment, preferably, insulating films 4 are provided on both sides of the busbar assembly, facing toward and away from the battery cells 20. The CCS assembly 1 also includes a signal acquisition component connected to the busbar assembly. Specifically, the input end of the signal acquisition component is correspondingly provided at the output and connection bars 10c. The signal acquisition component is located between the insulating films 4 and the busbar assembly. Providing insulating films 4 on both sides of the busbar assembly in the thickness direction further enhances the structural strength of the CCS assembly 1 and improves the secureness of the output and connection bars 10c after their installation. It should be noted that, as shown in Figures 2 and 3, second welding holes 41 are provided on each of the two insulating films 4 on the upper and lower layers of the busbar assembly. During use, the positive and negative terminals 201 and 202 of the battery cells 20 abut against the output and connection bars 10c through the second welding holes 41 of the lower insulating film 4. The welding torch abuts against the output and connection bars 10c through the second welding holes 41 of the upper insulating film 4 to perform welding.

[0037] The signal acquisition component in this embodiment can be an FPC5 or a signal acquisition harness. Preferably, the signal acquisition component is an FPC5. Its thin thickness helps to reduce the thickness of the CCS assembly 1. The FPC5 extends along the length of the battery module, and the input end is connected to the output row and the connecting row 10c to monitor the voltage or temperature signal of the battery cell 20 corresponding to the output row and the connecting row 10c. The output end of the FPC5 is at one end of the length of the battery module and is connected to a connector 6 for connecting to the BMS.

[0038] In this embodiment, in order to prevent the layout of FPC5 (mainly the thickness of FPC5) from affecting the welding of the output bus and connecting bus 10c with the battery cell 20, preferably, the signal acquisition component, that is, FPC5, is arranged on the side of the bus group away from the battery cell 20, that is, the signal acquisition component is between the bus group and the upper insulating film 4.

[0039] The FPC 5 comprises a stacked PI layer 501 and a substrate layer 502. The substrate layer 502 is provided with a nickel plate 51 and an NTC 52 to form the input terminal of the signal acquisition component. The PI layer 501 is located between the substrate layer 502 and the busbar assembly, and the substrate layer 502 is located between the PI layer 501 and the insulating film 4 attached to the FPC 5. As shown in Figures 3 and 11, the insulating film 4 (the upper insulating film 4 in this embodiment) can serve as another PI layer 501 stacked on the substrate layer 502 (a conventional FPC 5 comprises at least two PI layers 501, with the substrate layer 502 sandwiched between the two PI layers 501). In other words, the PI layer 501, substrate layer 502, and upper insulating film 4 stacked sequentially from bottom to top constitute the complete FPC 5 structure, which can reduce the cost of the FPC 5, effectively protect the FPC 5 structure and the NTC 52, reduce the thickness of the FPC 5, and therefore the thickness of the CCS assembly 1, and improve the integration rate of the CCS assembly 1.

[0040] It should be noted that the output end of the FPC5, i.e., the end equipped with the connector 6, can be protected by the upper insulating film 4 or a conventional PI film, whichever does not affect the normal use of the FPC5.

[0041] Of course, in other embodiments, the FPC5 can also be arranged on the side of the busbar group facing the battery cell 20. Accordingly, the insulating film 4 (the lower insulating film 4) arranged close to the side of the battery cell 20 acts as a part of the FPC5 structure, as before, and will not be repeated here.

[0042] As shown in Figures 2 and 3, the insulating film 4 is provided with a first welding hole corresponding to the collection nickel sheet 51, exposing the collection nickel sheet 51. During use, the collection nickel sheet 51 is abutted against the output bank through the first welding hole of the lower insulating film 4, and the welding gun is abutted against the collection nickel sheet 51 through the first welding hole of the upper insulating film 4 to weld the collection nickel sheet 51 to the output bank.

[0043] In this embodiment, a first positioning hole 34 is provided through the mainboard 31, a second positioning hole 42 is provided in the insulating film 4, and a third positioning hole 125 is provided in the output row. The first positioning hole 34, the second positioning hole 42, and the third positioning hole 125 are provided in a corresponding manner. During use, after the insulating film 4, the output row, and the positioning plate are assembled, the first positioning hole 34 and its corresponding second positioning hole 42 and third positioning hole 125 are coaxial, facilitating the positioning and assembly of the insulating film 4, the output row, and the positioning plate, thereby improving the assembly accuracy of the CCS assembly 1.

[0044] In this embodiment, as shown in Figures 5 and 6, in the extension direction of the extension portion 122, the outer edge of the connecting protrusion 32 on the side away from the free end of the extension portion 122 is provided with a first rounded corner 321. In the extension direction of the extension portion 122, the top angles of the outer edge of the main board 31 on the side close to the free end of the extension portion 122 are all second rounded corners 311. The first rounded corner 321 here is used to reduce the stress concentration on the outer edge of the connecting protrusion 32 on the side facing the bending portion 124. On the one hand, it is convenient for the demolding of the positioning plate, and on the other hand, it can prevent damage to the output row structure during assembly of the output row. The second rounded corner 311 is used to reduce the stress concentration on the top angle of the main board 31, i.e., the positioning plate, on the side away from the external connection portion 11, to prevent scratches on other components of the CCS assembly 1 during assembly.

[0045] In some embodiments, at least a portion of the connecting bar 10c is supported on a positioning plate. Specifically, the positioning plate extending toward the connecting bar 10c adjacent to the output bar, i.e., the main board 31, can also provide support for the connecting bar 10c, thereby further enhancing the structural strength of the CCS assembly 1. During use, the main board 31 is provided with corresponding holes to allow the connecting bar 10c to pass through the main board 31 and connect to the battery cell 20.

[0046] This embodiment also provides a battery module, comprising a battery cell 20 and the aforementioned CCS assembly 1, wherein the battery cell 20 is connected to the busbar assembly through the insulating film 4 and the positioning plate. It has high safety and low production cost.

Claims

1. A CCS component, applied to a battery module, comprising: Insulating film (4); A busbar group comprises an output bar, a connecting bar (10c) and a positioning plate, wherein two of the output bars are correspondingly arranged at two ends of a battery module in a length direction; a plurality of connecting bars (10c) are arranged between the two output bars; at the same end in the length direction of the battery module, the output bar is at least partially supported on the corresponding positioning plate, and the positioning plate is extended toward the connecting bar (10c) adjacent to the output bar; The insulating film (4) is at least arranged on a side of the busbar group facing the battery core (20), and the busbar group is connected to the insulating film (4).

2. The CCS assembly according to claim 1, wherein: The busbar group is bonded or hot-pressed to the insulating film (4).

3. The CCS assembly according to claim 1, wherein: The insulating film (4) is provided on both sides of the busbar group facing toward and away from the battery core (20); The CCS assembly further includes a signal acquisition component, and the signal acquisition component is connected to the busbar group; The signal collection component is located between the insulating film (4) and the busbar group.

4. The CCS assembly according to claim 3, wherein: The signal acquisition component is an FPC (5), and the FPC (5) comprises a stacked PI layer (501) and a substrate layer (502), and a collection nickel sheet (51) is arranged on the substrate layer (502) to form an input end of the signal acquisition component; The PI layer (501) is located between the substrate layer (502) and the busbar group, and the substrate layer (502) is located between the PI layer (501) and the insulating film (4) bonded to the FPC (5).

5. The CCS assembly according to claim 3, wherein: The signal collection component is an FPC (5), and the FPC (5) is arranged on a side of the busbar group away from the battery core (20).

6. The CCS assembly according to claim 4, wherein: The insulating film (4) is provided with a first welding hole corresponding to the collection nickel sheet (51) to expose the collection nickel sheet (51).

7. The CCS assembly according to claim 1, wherein: The insulating film (4) is provided with a second welding hole (41) penetrating therethrough, and the positive electrode portion (131) and the negative electrode portion (132) of the conductive unit (13) pass through the second welding hole (41) to abut against the battery core (20).

8. The CCS assembly according to any one of claims 1 to 7, wherein: The output row comprises an extension portion (122), and a free end of the extension portion (122) is connected to the battery cell (20); The positioning plate comprises a main board (31), a side of the main board (31) facing the extension portion (122) is provided with a connecting protrusion (32), and the connecting protrusion (32) is supported by the extension portion (122); The connecting protrusion (32) is away from the free end of the extending portion (122) in the extending direction of the extending portion (122).

9. The CCS assembly according to claim 8, wherein: The output row includes: Internal connecting portion (12); An external connection part (11) is connected to the internal connection part, and the two are separately arranged; The thickness of the outer connecting portion (11) is greater than the thickness of the inner connecting portion; The extension portion (122) is a part of the inner connecting portion.

10. The CCS assembly according to claim 9, wherein: The inner connecting portion comprises a main body portion (121), and the main body portion (121) is connected to the outer connecting portion (11); The extension portion (122) is provided on a side of the main body portion (121) away from the external connection portion (11), and the extension portion (122) is used to connect to the positive terminal (201) or the negative terminal (202) of the battery cell (20).

11. The CCS assembly according to claim 8, wherein: The main board (31) is provided with an electrode hole (33) extending therethrough, and the free end of the extension portion (122) is connected to the battery core (20) through the electrode hole (33).

12. The CCS assembly according to claim 8, wherein: The main board (31) is provided with a first positioning hole (34), the insulating film (4) is provided with a second positioning hole (42), the output row is provided with a third positioning hole (125), and the first positioning hole (34), the second positioning hole (42) and the third positioning hole (125) are provided correspondingly.

13. The CCS assembly according to any one of claims 1 to 7, wherein: The insulating film (4) comprises a base film (401) and a glue layer (402), and the glue layer (402) is arranged toward one side of the busbar group.

14. The CCS assembly according to claim 13, wherein: The thickness of the base film (401) is D1, 0 μm<D1≤150 μm; the thickness of the adhesive layer (402) is D2, 0 μm<D2≤50 μm.

15. The CCS assembly according to claim 8, wherein: In the extension direction of the extension portion (122), a first rounded corner (321) is provided on an outer edge of one side of the connecting protrusion (32) away from the free end of the extension portion (122).

16. The CCS assembly of claim 8, wherein: In the extension direction of the extension portion (122), the top angle of the outer edge of one side of the main board (31) close to the free end of the extension portion (122) is a second rounded corner (311).

17. The CCS assembly of claim 1, wherein: At least part of the connecting row (10c) is supported on the positioning plate.

18. A battery module, comprising a battery cell and a CCS assembly (1) according to any one of claims 1 to 17; The battery core (20) is connected to the busbar group through the insulating film (4) and the positioning plate.

Images