Integrated busbar assembly and battery module

Abstract

The utility model relates to an integrated busbar assembly and a battery module. Relates to the technical field of new energy batteries. The device specifically comprises a plastic shell, a signal acquisition piece and two heating films, the signal acquisition piece is arranged on the plastic shell, and the two heating films are distributed on the two sides of the signal acquisition piece; the signal acquisition part comprises a flexible circuit board, the two heating films vertically extend downwards on the two sides of the flexible circuit board respectively, the two heating films and the flexible circuit board are of an integrated structure, and power-on terminals extending outwards are arranged on the heating films. According to the utility model, the two heating films vertically extend downwards on the two sides of the flexible circuit board respectively, and are integrated with the flexible circuit board, so that the heating films are integrated on the signal acquisition piece, parts in the battery module are reduced, the assembly procedures of the battery module are reduced, the production efficiency is improved, the production cost is reduced, and the product quality is improved. And meanwhile, the temperature of the heating film is acquired through the signal acquisition part, so that the temperature of the battery module is more accurately controlled, and the performance of the battery module is improved.

Description

Technical Field

[0001] This utility model relates to the field of new energy battery technology, and in particular to an integrated busbar assembly and an electric...

[0002] Pool module. Background Technology

[0003] CCS (Cells Contact System) integrated busbars are key components in the battery modules of new energy vehicles. Using laser welding technology, they integrate FPC (Flexible Printed Circuit), plastic structural components, copper, aluminum busbars, and other materials into a single unit, enabling efficient connection and management of the battery module. Each electric vehicle's battery module is equipped with a corresponding number of CCS integrated busbars to meet the series and parallel connection requirements of the batteries.

[0004] Against the backdrop of the booming development of the new energy vehicle industry, the CCS integrated busbar, as an important component of the battery management system (BMS), replaces the traditional copper wire harness acquisition line with its FPC design. This not only significantly reduces the component thickness but also improves safety performance, reduces weight, and optimizes layout regularity. Furthermore, the highly automated production characteristics of CCS make it ideal for mass production, further driving the rapid development of the new energy vehicle industry.

[0005] Because the fluidity of the electrolyte inside the battery cell decreases at low temperatures, the cell's internal efficiency is reduced, thus affecting battery performance, such as reduced discharge capacity and incomplete charging. Therefore, battery modules typically include a heating film to heat the battery cells. In existing technologies, the heating film and the CCS integrated busbar in the battery module are two relatively independent components, resulting in a larger number of parts in the battery module, increasing the assembly process, reducing production efficiency, and increasing production costs. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of the prior art by providing an integrated busbar assembly and battery module, which can reduce the assembly steps of the battery module, thereby improving production efficiency, reducing production costs, and more accurately controlling the temperature of the battery module, thus improving the performance of the battery module.

[0007] This utility model proposes an integrated busbar assembly, including a plastic shell, a signal acquisition component, and a heating film. The signal acquisition component is disposed on the plastic shell, and the heating film consists of two heating films distributed on both sides of the signal acquisition component. The signal acquisition component includes a flexible circuit board, and the two heating films extend vertically downward on both sides of the flexible circuit board and are integrally formed with the flexible circuit board. The heating films are provided with outwardly extending power terminals.

[0008] Furthermore, the integrated busbar assembly also includes multiple conductive busbars, and the top of the plastic shell is provided with multiple mounting slots arranged in an array. Each of the conductive busbars is installed in one of the mounting slots to connect two adjacent cells in series.

[0009] Furthermore, the bottom of the mounting groove is provided with a through hole, through which the positive or negative terminal of the battery cell passes and contacts the bottom of the conductive busbar.

[0010] Furthermore, the area at the bottom of the mounting groove where the through hole is not opened is provided with a plug post, and the conductive busbar is provided with a plug hole for the plug post to be inserted.

[0011] Furthermore, the plug-in pins are at least two located at the bottom of the mounting groove, and the plug-in holes are at least two located on the conductive busbar, with each of the at least two plug-in holes being used for plugging in at least two of the plug-in pins.

[0012] Furthermore, the flexible circuit board is provided with a plurality of clearance holes arranged in an array, each clearance hole being used to expose the top of one of the conductive busbars, and the signal acquisition device also includes a plurality of connecting pieces, each connecting piece connecting the top of one of the conductive busbars to the flexible circuit board.

[0013] Furthermore, the signal acquisition device also includes a connector, which is located at one end of the flexible circuit board and is used to connect the flexible circuit board to the battery management system.

[0014] Furthermore, the integrated busbar assembly also includes an upper cover plate disposed on the plastic shell, the upper cover plate being disposed on top of the plurality of conductive busbars to cover the plurality of conductive busbars.

[0015] Furthermore, the conductive bus includes multiple intermediate buses that connect two adjacent battery cells in series, a first terminal bus that leads out the positive terminals of all battery cells, and a second terminal bus that leads out the negative terminals of all battery cells.

[0016] This utility model also provides a battery module, including the above-mentioned integrated busbar assembly, and further including a battery cell group formed by multiple battery cells arranged in an array, the plastic shell being disposed on the top of the battery cell group, and the two heating films being respectively attached to the two sides of the battery cell group.

[0017] The integrated busbar assembly and battery module proposed in this utility model have the following beneficial effects:

[0018] (1) The two heating films of this integrated busbar assembly extend vertically downward on both sides of the flexible circuit board and are integrated with the flexible circuit board, thereby integrating the heating films on the signal acquisition device, reducing the number of parts in the battery module, thereby reducing the assembly process of the battery module, improving production efficiency, and reducing production costs.

[0019] (2) This integrated busbar assembly integrates the heating film on the signal acquisition device, enabling the signal acquisition device to acquire the temperature information of the heating film, and then transmit the temperature information to the battery management system through the signal acquisition device, so that the battery management system can control the heating power of the heating film, thereby more accurately controlling the temperature of the battery module and improving the performance of the battery module.

[0020] (3) This integrated busbar assembly also includes multiple conductive busbars. The top of the plastic shell is provided with multiple mounting slots, and the multiple mounting slots are arranged in an array. By installing each conductive busbar in the corresponding mounting slot, the multiple conductive busbars connect the multiple cells of the cell group in series, thereby realizing the grouping of multiple cells.

[0021] (4) The bottom of the mounting slot of this integrated busbar assembly is provided with a through hole. When the plastic shell is placed on the top of the battery cell group, the positive and negative terminals of multiple battery cells pass through the through hole. When multiple conductive busbars are installed in multiple mounting slots respectively, the positive or negative terminal of the battery cell passes through the through hole and contacts the bottom of the corresponding conductive busbar, thereby connecting multiple battery cells in series through multiple conductive busbars to achieve battery cell grouping.

[0022] (5) At least two plug-in posts are provided at the bottom of the mounting slot of this integrated busbar assembly, and at least two plug-in holes are provided at the corresponding positions of the conductive busbar. By plugging the at least two plug-in posts into the at least two plug-in holes respectively, it can not only guide the installation direction of the conductive busbar in the mounting slot, but also enhance the stability of the conductive busbar in the corresponding mounting slot, thereby improving production efficiency and enhancing the stability of the battery module structure.

[0023] (6) The signal acquisition component of this integrated busbar assembly also includes multiple connecting pieces. When the tops of the multiple conductive busbars are inserted into the corresponding clearance holes, the multiple clearance holes expose the tops of the multiple conductive busbars, so that the multiple connecting pieces can connect the tops of the multiple conductive busbars to the flexible circuit board, thereby enabling the flexible circuit board to acquire voltage, temperature and other data of the multiple cells of the battery cell group.

[0024] (7) This integrated busbar assembly also includes a top cover plate, which is set on the plastic shell. When assembling the integrated busbar assembly, multiple conductive busbars, flexible circuit boards and top cover plates are installed on the plastic shell from bottom to top, so that the top of multiple conductive busbars is covered by the top cover plate, so that the top cover plate protects multiple conductive busbars and thus enhances the safety performance of the battery module;

[0025] (8) The conductive busbar of this integrated busbar assembly includes multiple intermediate busbars, a first-end busbar, and a second-end busbar. The multiple intermediate busbars connect multiple cells of the battery cell group in series. The first-end busbar leads out the positive terminal of the battery cell group, and the second-end busbar leads out the negative terminal of the battery cell group. Then, the battery cell group is connected to external electrical equipment through the first-end busbar and the second-end busbar to realize the charging and discharging function of the battery cell group. Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention. In these drawings, similar reference numerals are used to denote similar elements.

[0027] Figure 1 This is an exploded view of a battery module according to an embodiment of the present utility model;

[0028] Figure 2 This is an exploded view of an integrated busbar assembly according to an embodiment of the present utility model;

[0029] Figure 3 This is a schematic diagram of the structure of the plastic shell of an integrated busbar assembly according to an embodiment of the present invention;

[0030] Figure 4 This is a schematic diagram of the structure of an integrated busbar assembly, including a signal acquisition device, a heating film, and a conductive busbar, on a plastic shell according to an embodiment of the present invention.

[0031] Figure 5 This is a schematic diagram of the structure of an integrated busbar assembly with a heating film integrated on a signal acquisition device, according to an embodiment of the present invention.

[0032] In the diagram: 1. Plastic shell; 11. Mounting slot; 12. Through hole; 13. Plug-in post; 2. Signal acquisition component; 21. Flexible circuit board; 211. Clearance hole; 22. Connecting piece; 23. Connector; 3. Heating film; 31. Power terminal; 4. Conductive bus; 41. Plug-in hole; 42. Intermediate bus; 43. First end bus; 44. Second end bus; 5. Top cover plate; 6. Battery cell assembly; 61. Battery cell. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0034] Please see Figures 1-5 An integrated busbar assembly according to an embodiment of the present invention includes a plastic shell 1, a signal acquisition component 2, and a heating film 3. The signal acquisition component 2 is disposed on the plastic shell 1, and the heating film 3 consists of two components distributed on both sides of the signal acquisition component 2. The signal acquisition component 2 includes a flexible circuit board 21, and the two heating films 3 extend vertically downward on both sides of the flexible circuit board 21 and are integral with the flexible circuit board 21. The heating film 3 is provided with outwardly extending power terminals 31.

[0035] In this application, the integrated busbar assembly includes a plastic shell 1 and a signal acquisition component 2. The signal acquisition component 2 is disposed on the plastic shell 1 and is used to collect information such as voltage and temperature of the battery cell 61, and transmit the collected information to the battery management system, thereby realizing the monitoring of data such as voltage and temperature of the battery cell 61.

[0036] Because the electrolyte inside the cell 61 becomes less fluid at low temperatures, the working efficiency of the cell 61 decreases, thus affecting the battery's performance, such as reduced discharge capacity and incomplete charging. Therefore, in this application, the integrated busbar assembly also includes two heating films 3, which are distributed on both sides of the signal acquisition unit 2.

[0037] Two heating films 3 are provided with outwardly extending power terminals 31, which are connected to an external circuit to energize the two heating films 3, thereby heating the battery cell 61 to a suitable operating temperature, improving the fluidity and efficiency of the electrolyte inside the battery cell 61, and thus improving the battery performance in low-temperature environments.

[0038] In the prior art, the heating film 3 and the integrated busbar are two relatively independent components in the battery module. However, in this application, the heating film 3 is integrated onto the integrated busbar to form an integrated busbar assembly. Specifically, the signal acquisition component 2 includes a flexible circuit board 21, and two heating films 3 extend vertically downwards on both sides of the flexible circuit board 21, forming an integral structure with the flexible circuit board 21. This integrates the heating film 3 onto the signal acquisition component 2, reducing the number of components in the battery module, thereby reducing the assembly steps of the battery module, improving production efficiency, and reducing production costs.

[0039] Meanwhile, since the signal acquisition device 2 is used to acquire the voltage and temperature information of the battery cell 61, the heating film 3 is integrated on the signal acquisition device 2, so that the signal acquisition device 2 can acquire the temperature information of the heating film 3, and then transmit the temperature information to the battery management system through the signal acquisition device 2, so that the battery management system can control the heating power of the heating film 3, thereby controlling the temperature of the battery module more accurately and improving the performance of the battery module.

[0040] This utility model embodiment also provides a battery module, including the aforementioned integrated busbar assembly, and further including a battery cell group 6 formed by an array of multiple battery cells 61, wherein a plastic shell 1 is disposed on the top of the battery cell group 6, and a flexible circuit board 21 is disposed on the plastic shell 1 for collecting information such as voltage and temperature of the battery cell group 6; two heating films 3 extending vertically downward on both sides of the flexible circuit board 21 are respectively disposed and attached to the two sides of the battery cell group 6, so that the two heating films 3 heat the battery cell group 6 after being energized through the power terminal 31, so that the battery cells 61 are kept at a suitable operating temperature.

[0041] In this embodiment, the integrated busbar assembly further includes multiple conductive busbars 4. The top of the plastic shell 1 is provided with multiple mounting slots 11 arranged in an array. Each conductive busbar 4 is installed in one mounting slot 11 to connect two adjacent battery cells 61 in series. In this application, the integrated busbar assembly further includes multiple conductive busbars 4, and the top of the plastic shell 1 is provided with multiple mounting slots 11, which are arranged in an array. When the plastic shell 1 is placed on top of the battery cell group 6, each conductive busbar 4 is installed in the corresponding mounting slot 11, so that the multiple conductive busbars 4 connect the multiple battery cells 61 of the battery cell group 6 in series, thereby realizing the grouping of multiple battery cells 61.

[0042] Furthermore, in this embodiment, the bottom of the mounting groove 11 is provided with a through hole 12. The positive or negative terminal of the battery cell 61 passes through the through hole 12 and contacts the bottom of the conductive busbar 4. In this application, the bottom of the mounting groove 11 is provided with a through hole 12. When the plastic shell 1 is placed on top of the battery cell group 6, the positive and negative terminals of multiple battery cells 61 pass through the through hole 12. When multiple conductive busbars 4 are respectively installed in multiple mounting grooves 11, the positive or negative terminal of the battery cell 61 passes through the through hole 12 and contacts the bottom of the corresponding conductive busbar 4, thereby connecting multiple battery cells 61 in series through multiple conductive busbars 4 to achieve the grouping of battery cells 61.

[0043] In this embodiment, a plug-in post 13 is provided in the area at the bottom of the mounting groove 11 where the through hole 12 is not formed, and the conductive busbar 4 is provided with a plug-in hole 41 for the plug-in post 13 to be inserted. As mentioned in the previous embodiment, the mounting groove 11 is provided with a through hole 12, which connects the bottom of the mounting groove 11 to the outside. However, the cross-sectional area of ​​the through hole 12 is smaller than the cross-sectional area of ​​the mounting groove 11, so the through hole 12 is only provided in a part of the bottom area of ​​the mounting groove 11.

[0044] In this application, a plug-in post 13 is provided in the area at the bottom of the mounting groove 11 where the through hole 12 is not provided, and a plug-in hole 41 is provided on the conductive busbar 4. When the conductive busbar 4 is installed in the corresponding mounting groove 11, the plug-in post 13 extending vertically upward at the bottom of the mounting groove 11 is plugged into the plug-in hole 41 at the corresponding position on the conductive busbar 4, thereby fixing the conductive busbar 4 in the mounting groove 11, enhancing the structural strength of the integrated busbar assembly, and thus enhancing the stability of the battery module structure.

[0045] In this embodiment, at least two plug-in posts 13 are located at the bottom of the mounting groove 11, and at least two plug-in holes 41 are located on the conductive busbar 4. Each of the at least two plug-in holes 41 is used for insertion into at least two plug-in posts 13. In this application, at least two plug-in posts 13 are provided at the bottom of the mounting groove 11, and at least two plug-in holes 41 are provided at corresponding positions on the conductive busbar 4.

[0046] When the conductive busbar 4 is installed in the corresponding mounting groove 11, at least two plug-in posts 13 extending vertically upward from the bottom of the mounting groove 11 are respectively plugged into at least two plug-in holes 41 on the conductive busbar 4. By having at least two plug-in posts 13 respectively plugged into at least two plug-in holes 41, the installation direction of the conductive busbar 4 in the mounting groove 11 can be guided, thereby making the installation of multiple conductive busbars 4 on the plastic shell 1 simpler and more convenient, and thus improving production efficiency.

[0047] On the other hand, it can enhance the stability of the conductive busbar 4 in the corresponding mounting slot 11, so that multiple conductive busbars 4 can better connect multiple cells 61 in series, thereby further enhancing the structural strength of the integrated busbar assembly and thus enhancing the stability of the battery module structure.

[0048] In this embodiment, the flexible circuit board 21 is provided with a plurality of arrayed clearance holes 211, each clearance hole 211 being used to expose the top of a conductive bus 4. The signal acquisition component 2 also includes a plurality of connecting pieces 22, each connecting piece 22 connecting the top of a conductive bus 4 to the flexible circuit board 21. As mentioned in the previous embodiment, both the flexible circuit board 21 and the conductive bus 4 are disposed on the plastic shell 1. In actual implementation, the conductive bus 4 and the flexible circuit board 21 are disposed sequentially from bottom to top on the plastic shell 1, with the flexible circuit board 21 located on top of the conductive bus 4.

[0049] In this application, the flexible circuit board 21 is provided with a plurality of clearance holes 211, and the plurality of clearance holes 211 are arranged in an array. When the conductive busbar 4 and the flexible circuit board 21 are arranged sequentially from bottom to top on the plastic shell 1, the bottom of the conductive busbar 4 is inserted into the corresponding mounting groove 11, and the top is inserted into the corresponding clearance hole 211. On the one hand, the flexible circuit board 21 can limit the top of the conductive busbar 4 through the clearance hole 211, thereby further enhancing the structural strength of the integrated busbar assembly, and thus enhancing the stability of the battery module structure.

[0050] On the other hand, in this application, the signal acquisition device 2 also includes multiple connecting pieces 22. When the tops of the multiple conductive busbars 4 are respectively inserted into the corresponding clearance holes 211, the multiple clearance holes 211 expose the tops of the multiple conductive busbars 4, so that the multiple connecting pieces 22 can respectively connect the tops of the multiple conductive busbars 4 to the flexible circuit board 21, thereby enabling the flexible circuit board 21 to acquire voltage, temperature and other data of the multiple cells 61 of the cell group 6.

[0051] In this embodiment, the signal acquisition device 2 also includes a connector 23, which is disposed at one end of the flexible circuit board 21. The flexible circuit board 21 is connected to the battery management system through the connector 23, so that the flexible circuit board 21 can transmit the acquired information to the battery management system, thereby enabling the battery management system to monitor the voltage, temperature and other data of the cell 61.

[0052] In this embodiment, the integrated busbar assembly further includes an upper cover plate 5 disposed on the plastic shell 1. The upper cover plate 5 is located on top of the multiple conductive busbars 4 to cover the multiple conductive busbars 4. In this application, the integrated busbar assembly also includes an upper cover plate 5, which is disposed on the plastic shell 1. During the assembly of the integrated busbar assembly, the multiple conductive busbars 4, the flexible circuit board 21, and the upper cover plate 5 are sequentially installed on the plastic shell 1 from bottom to top.

[0053] Since the flexible circuit board 21 has multiple clearance holes 211 that expose the tops of multiple conductive busbars 4, when the upper cover plate 5 is installed on the flexible circuit board 21, it is located on top of multiple conductive busbars 4. Thus, the upper cover plate 5 blocks the tops of multiple conductive busbars 4, thereby protecting the multiple conductive busbars 4 and enhancing the safety performance of the battery module.

[0054] In this embodiment, the conductive bus 4 includes multiple intermediate buses 42 that connect two adjacent battery cells 61 in series, a first-end bus 43 that leads out the positive terminals of all battery cells 61, and a second-end bus 44 that leads out the negative terminals of all battery cells 61. In this application, the conductive bus 4 includes multiple intermediate buses 42, a first-end bus 43, and a second-end bus 44. The multiple intermediate buses 42 are disposed in the middle of the battery cell group 6. One end of the intermediate bus 42 is connected to the positive or negative terminal of one battery cell 61, and the other end is connected to the positive or negative terminal of another adjacent battery cell 61, so that the multiple intermediate buses 42 connect the multiple battery cells 61 in series.

[0055] The first busbar 43 is located at one end of the cell assembly 6 and is connected to the positive terminal of the cell 61 at the beginning of the cell assembly 6. The second busbar 44 is located at the opposite end of the cell assembly 6 and is connected to the negative terminal of the cell 61 at the end of the cell assembly 6. Thus, the first busbar 43 leads out the positive terminal of the cell assembly 6, and the second busbar 44 leads out the negative terminal of the cell assembly 6. In turn, the first busbar 43 and the second busbar 44 are connected to external electrical equipment to realize the charging and discharging function of the cell assembly 6.

[0056] The above-described contents can be implemented individually or in combination in various ways, and all such variations are within the protection scope of this utility model.

[0057] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An integrated busbar assembly, characterized in that: The device includes a plastic shell (1), a signal acquisition component (2), and a heating film (3). The signal acquisition component (2) is disposed on the plastic shell (1), and the heating film (3) consists of two components distributed on both sides of the signal acquisition component (2). The signal acquisition component (2) includes a flexible circuit board (21). The two heating films (3) extend vertically downward on both sides of the flexible circuit board (21) and are integral with the flexible circuit board (21). The heating film (3) is provided with outwardly extending power terminals (31).

2. An integrated busbar assembly as described in claim 1, characterized in that: The integrated busbar assembly also includes multiple conductive busbars (4), and the top of the plastic shell (1) is provided with multiple mounting slots (11) arranged in an array. Each of the conductive busbars (4) is installed in one of the mounting slots (11) to connect two adjacent cells (61) in series.

3. An integrated busbar assembly as described in claim 2, characterized in that: The bottom of the mounting groove (11) is provided with a through hole (12), and the positive or negative terminal of the battery cell (61) passes through the through hole (12) and contacts the bottom of the conductive busbar (4).

4. An integrated busbar assembly as described in claim 3, characterized in that: The area at the bottom of the mounting groove (11) where the through hole (12) is not opened is provided with a plug post (13), and the conductive busbar (4) is provided with a plug hole (41) for the plug post (13) to be plugged in.

5. An integrated busbar assembly as described in claim 4, characterized in that: The plug-in pins (13) are at least two located at the bottom of the mounting groove (11), and the plug-in holes (41) are at least two located on the conductive busbar (4). At least two of the plug-in holes (41) are respectively used for plugging in at least two of the plug-in pins (13).

6. An integrated busbar assembly as described in claim 2, characterized in that: The flexible circuit board (21) is provided with a plurality of clearance holes (211) arranged in an array. Each clearance hole (211) is used to expose the top of one of the conductive busbars (4). The signal acquisition device (2) also includes a plurality of connecting pieces (22). Each connecting piece (22) connects the top of one of the conductive busbars (4) to the flexible circuit board (21).

7. An integrated busbar assembly as described in claim 1, characterized in that: The signal acquisition device (2) also includes a connector (23), which is located at one end of the flexible circuit board (21) and is used to connect the flexible circuit board (21) to the battery management system.

8. An integrated busbar assembly as described in claim 2, characterized in that: The integrated busbar assembly also includes an upper cover plate (5) disposed on the plastic shell (1), the upper cover plate (5) being disposed on top of the plurality of conductive busbars (4) to cover the plurality of conductive busbars (4).

9. An integrated busbar assembly as described in claim 2, characterized in that: The conductive bus (4) includes multiple intermediate buses (42) that connect two adjacent cells (61) in series, a first-end bus (43) that leads out the positive electrode of all cells (61), and a second-end bus (44) that leads out the negative electrode of all cells (61).

10. A battery module, characterized in that, The integrated busbar assembly includes any one of claims 1-9, and further includes a battery cell group (6) formed by an array of multiple battery cells (61), wherein the plastic shell (1) is disposed on the top of the battery cell group (6), and the two heating films (3) are respectively attached to the two sides of the battery cell group (6).

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