Integrated busbar assembly, battery pack, and vehicle

Abstract

The application provides an integrated busbar assembly, a battery pack and a vehicle, and relates to the field of CCS assembly technology. The integrated busbar assembly provided by the application comprises a flexible circuit board, an aluminum busbar and a support, the flexible circuit board is arranged on a battery cell module of the battery pack, the aluminum busbar is welded with the flexible circuit board, the support is covered on the flexible circuit board and the aluminum busbar, and the flexible circuit board and the aluminum busbar are bonded with the support. In the traditional scheme, the flexible circuit board is connected to the aluminum busbar through a conversion nickel sheet, and the flexible circuit board and the aluminum busbar need to be fixed to the support through a riveting process respectively, which involves multiple processes and has high alignment accuracy requirements. The application adopts the design of full coverage of the support combined with bonding, so that the flexible circuit board and the aluminum busbar are directly preassembled on the support, the separate riveting step is saved, the flexible circuit board is directly welded with the aluminum busbar, and the conversion nickel sheet is not needed, so that the installation structure of the integrated busbar assembly is simplified, and the assembly of the integrated busbar assembly is facilitated.

Description

Technical Field

[0001] This application relates to CCS component technology, and more particularly to an integrated busbar assembly, battery pack, and vehicle. Background Technology

[0002] With the rise of new energy vehicles, the components used in conjunction with them have also developed. Among them, the integrated busbar assembly (Cruise Control System, CCS assembly) is an important component of the power battery pack in new energy vehicles, mainly playing the roles of power transmission, signal acquisition, and battery management.

[0003] In related technologies, CCS components typically include a support, a flexible printed circuit (FPC), and an aluminum busbar. The flexible printed circuit is connected to the aluminum busbar via an adapter nickel strip. The flexible printed circuit and the aluminum busbar also need to be fixed to the support with rivets to ensure the stability of the electrical connection and mechanical strength.

[0004] However, the above setup makes the installation process of CCS components quite complicated. Utility Model Content

[0005] In view of this, this application provides an integrated busbar assembly, a battery pack, and a vehicle, which aims to simplify the installation structure of the integrated busbar assembly and facilitate its assembly.

[0006] To achieve the above objectives, this application provides an integrated busbar assembly, battery pack, and vehicle, employing the following technical solution:

[0007] In a first aspect, this application provides an integrated busbar assembly, comprising:

[0008] Flexible circuit boards are used to mount on the cell modules of the battery pack;

[0009] An aluminum busbar is welded to the flexible circuit board and is used for conductive connection with the battery cell module;

[0010] A support member covers the flexible circuit board and the aluminum busbar, and both the flexible circuit board and the aluminum busbar are bonded to the support member.

[0011] In one possible implementation, the integrated busbar assembly provided in this application has a first connector on the surface of the support member facing the flexible circuit board and the aluminum busbar, and the flexible circuit board and the aluminum busbar are bonded to the support member through the first connector.

[0012] In one possible implementation, the integrated busbar assembly provided in this application has a support member made of PET hot-pressed film and a first connector made of hot melt adhesive.

[0013] In one possible implementation, the integrated busbar assembly provided in this application includes a flexible circuit board comprising a circuit board body and a plurality of connecting portions, all of which are electrically connected to the circuit board body. The plurality of connecting portions are located on both sides of the circuit board body along its length and are spaced apart along the length of the circuit board body.

[0014] Multiple aluminum busbars are provided, and each aluminum busbar corresponds to a connecting part;

[0015] The connecting part is ultrasonically welded to the aluminum busbar.

[0016] In one possible implementation, the integrated busbar assembly provided in this application has the extension direction of the connecting portion being consistent with the extension direction of the circuit board body, and there is a gap between the connecting portion and the circuit board body.

[0017] The flexible circuit board further includes a reinforcing portion located within the spacing, the reinforcing portion connecting the connecting portion and the circuit board body.

[0018] In one possible implementation, the integrated busbar assembly provided in this application has a second connector disposed on the surface of the support member facing away from the flexible circuit board, and the support member is used to bond to the housing of the battery pack through the second connector.

[0019] In one possible implementation, the integrated busbar assembly provided in this application further includes a positioning bracket, which is disposed on one side of the flexible circuit board and is used to fix the battery cell module's terminal post.

[0020] The positioning bracket has a positioning post, and multiple aluminum bars are provided. One of the aluminum bars is provided with a positioning hole, and the positioning post is configured to be inserted into the positioning hole.

[0021] In one possible implementation, the integrated busbar assembly provided in this application further includes an extension portion that is electrically connected to the flexible circuit board.

[0022] The extension portion is provided with a connector at one end away from the flexible circuit board, and the extension portion is used to be detachably connected to the slave board of the battery pack through the connector.

[0023] Secondly, this application provides a battery pack, including a cell module and an integrated busbar assembly as described above; the integrated busbar assembly is connected to the cell module.

[0024] Thirdly, this application provides a vehicle including a body and a battery pack as described above, the battery pack being disposed on the vehicle body.

[0025] This application provides an integrated busbar assembly, battery pack, and vehicle. The integrated busbar assembly includes a flexible circuit board, an aluminum busbar, and a support component. The flexible circuit board is mounted on the cell modules of the battery pack. The aluminum busbar is welded to the flexible circuit board and is used for conductive connection with the cell modules. The support component covers the flexible circuit board and the aluminum busbar, and both the flexible circuit board and the aluminum busbar are bonded to the support component. In traditional solutions, the flexible circuit board is connected to the aluminum busbar via an adapter nickel strip, and the flexible circuit board and aluminum busbar must be separately fixed to the support component via riveting, involving multiple processes and requiring high alignment accuracy. This application adopts a design where the support component fully covers and is bonded, allowing the flexible circuit board and aluminum busbar to be pre-installed directly on the support component, eliminating the need for separate riveting steps. Simultaneously, the flexible circuit board is directly welded to the aluminum busbar, eliminating the need for an adapter nickel strip, simplifying the installation structure of the integrated busbar assembly and facilitating its assembly.

[0026] In addition to the technical problems solved by the embodiments of this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the technical solutions provided by this application, other technical features contained in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific embodiments. Attached Figure Description

[0027] The specific embodiments of this application are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for illustration and explanation of this application, and this application is not limited to the specific embodiments described below.

[0028] Figure 1 This is an exploded structural diagram of the integrated busbar assembly and battery cell module provided in the embodiments of this application;

[0029] Figure 2 for Figure 1 A magnified structural diagram of part A in the middle;

[0030] Figure 3 This is a schematic diagram of the battery pack structure provided in an embodiment of this application;

[0031] Figure 4 An exploded view of the integrated busbar assembly provided in the embodiments of this application;

[0032] Figure 5 This is a structural schematic diagram of the vehicle provided in an embodiment of this application.

[0033] Explanation of reference numerals in the attached figures:

[0034] 10. Cell module; 20. Housing; 30. Sub-board; 40. Vehicle; 50. Battery pack; 100. Flexible circuit board; 101. Spacing; 110. Circuit board body; 120. Connecting part; 130. Reinforcing part; 140. Extension part; 200. Aluminum busbar; 200a. First aluminum busbar; 200b. Second aluminum busbar; 201. Positioning hole; 300. Support member; 400. First connector; 500. Second connector; 600. Positioning bracket; 601. Positioning post; 700. Connector.

[0035] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0037] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0038] In the description of the embodiments of this application, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0039] In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise specified precisely.

[0040] The terms "first," "second," "third," "fourth," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0041] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or apparatus.

[0042] As mentioned in the background section, with the rise of new energy vehicles, the components used in conjunction with them have also developed. Among them, the integrated busbar assembly (Cruise Control System, CCS assembly) is an important component of the power battery pack in new energy vehicles, mainly playing the roles of power transmission, signal acquisition, and battery management.

[0043] In related technologies, CCS modules typically include a support structure, a flexible printed circuit (FPC), and an aluminum busbar. The FPC is connected to the aluminum busbar via an adapter nickel strip to ensure the stability of the electrical connection and mechanical strength. For example, traditional CCS modules typically use surface mount technology (SMT) to solder the adapter nickel strip onto the FPC, and then use laser welding to connect the adapter nickel strip to the aluminum busbar to ensure the stability of the electrical connection and mechanical strength. However, the manufacturing cost of SMT processes and laser welding equipment is high, increasing the overall system cost; the adapter nickel strip is relatively heavy, affecting the lightweight design of the battery pack. In harsh environments such as high temperature and high humidity, SMT solder joints and laser solder joints are prone to failure, leading to unstable electrical connections.

[0044] In related technologies, flexible circuit boards and aluminum busbars also need to be fixed to support members by means of connectors such as rivets. Fixing flexible circuit boards and aluminum busbars by rivets requires high positioning accuracy and additional fasteners and tools, making the installation process relatively complicated.

[0045] Based on the aforementioned technical problems, this application provides an integrated busbar assembly, battery pack, and vehicle. In this technical solution, the integrated busbar assembly includes a flexible circuit board, an aluminum busbar, and a support member. The flexible circuit board is mounted on the cell modules of the battery pack; the aluminum busbar is welded to the flexible circuit board and is used for conductive connection with the cell modules; the support member covers the flexible circuit board and the aluminum busbar, and both the flexible circuit board and the aluminum busbar are bonded to the support member. In traditional solutions, the flexible circuit board is connected to the aluminum busbar via an adapter nickel strip, and the flexible circuit board and aluminum busbar also need to be fixed to the support member separately using a riveting process, involving multiple steps and requiring high alignment accuracy. This application adopts a design that combines full coverage and bonding of the support member, allowing the flexible circuit board and aluminum busbar to be directly pre-installed on the support member, eliminating the need for separate riveting steps. Simultaneously, the flexible circuit board is directly welded to the aluminum busbar, eliminating the need for an adapter nickel strip, simplifying the installation structure of the integrated busbar assembly and facilitating its assembly.

[0046] It should be noted that, Figures 1 to 5 This diagram illustrates a simplified representation of the integrated busbar assembly, battery pack, and other components within the vehicle. The specific structure of the integrated busbar assembly, battery pack, and other components within the vehicle is not limited to these details. Figures 1 to 5 of examples.

[0047] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments:

[0048] Reference Figure 1 , Figure 2 and Figure 3 As shown in the embodiment of this application, an integrated busbar assembly includes a flexible circuit board 100, an aluminum busbar 200, and a support member 300.

[0049] The flexible circuit board 100 is used to be disposed on the cell module 10 of the battery pack 50. In this embodiment of the application, the cell module 10 of the battery pack 50 is not limited.

[0050] The aluminum busbar 200 is welded to the flexible circuit board 100. The aluminum busbar 200 is used to make a conductive connection with the cell module 10. The aluminum busbar 200 can electrically connect the terminals of the cell module 10, such as connecting two cells in series or in parallel.

[0051] The support 300 covers the flexible circuit board 100 and the aluminum busbar 200, and both the flexible circuit board 100 and the aluminum busbar 200 are bonded to the support 300.

[0052] In the above embodiments, compared with the indirect conductive path and riveted mechanical structure in traditional solutions, this application adopts direct welding of the aluminum busbar 200 and the flexible circuit board 100, combined with a fully enclosed adhesive connection method, to form a simpler connection structure. Eliminating the use of an adapter nickel sheet and directly welding the aluminum busbar 200 to the flexible circuit board 100 not only shortens the current transmission path and reduces resistance, but also saves the cost of manufacturing the adapter nickel sheet, which is beneficial for the lightweight design of the battery pack 50.

[0053] In one possible implementation, refer to Figure 3 As shown, a first connector 400 is provided on the surface of the support member 300 facing the flexible circuit board 100 and the aluminum busbar 200, and the flexible circuit board 100 and the aluminum busbar 200 are bonded to the support member 300 through the first connector 400.

[0054] In practice, the first connector 400 is a hot melt adhesive, and the support 300 is a PET hot-press film. The PET hot-press film has good mechanical strength and high temperature resistance. After heating, the hot melt adhesive on the PET hot-press film melts and bonds the flexible circuit board 100 and the aluminum busbar 200. After cooling, it solidifies, achieving the effect of fixing the flexible circuit board 100 and the aluminum busbar 200. The PET hot-press film can still maintain good electrical connection performance in harsh environments such as high temperature and high humidity, which improves the reliability of the system.

[0055] Specifically, the thickness of the PET hot-pressed film is set to 0.1 mm to 0.2 mm. The thickness of the PET hot-pressed film can be any of 0.1 mm, 0.11 mm, 0.13 mm, 0.17 mm, 0.19 mm, and 0.2 mm.

[0056] In the above embodiments, the first connector 400 can be pre-die-cut into a shape that matches the contours of the flexible circuit board 100 and the aluminum strip 200, and plays a role in pre-positioning during assembly to ensure the relative position accuracy of each component.

[0057] In one possible implementation, the flexible circuit board 100 includes a circuit board body 110 and a plurality of connecting portions 120. The plurality of connecting portions 120 are electrically connected to the circuit board body 110. The plurality of connecting portions 120 are located on both sides of the circuit board body 110 along the length direction and are spaced apart along the length direction of the circuit board body 110.

[0058] Multiple aluminum busbars 200 are provided, and each aluminum busbar 200 corresponds to a connecting part 120.

[0059] The connecting part 120 is ultrasonically welded to the aluminum busbar 200.

[0060] In the above embodiment, connecting portions 120 are provided on both sides of the circuit board body 110 along its length. Each connecting portion 120 is connected to an aluminum busbar 200, thus fully utilizing the space on both sides of the circuit board body 110. It is understood that the battery cell module 10 contains multiple battery cells, and the aluminum busbar 200 serves to electrically connect the battery cells. By providing connecting portions 120 on both sides of the circuit board body 110, more connecting portions 120 can be connected to the aluminum busbar 200, effectively allowing for more aluminum busbars 200 to be installed, thereby increasing the number of battery cells and improving the capacity of the battery pack 50.

[0061] The connector 120 and the aluminum busbar 200 are ultrasonically welded to form a molecular-level metal bond. This results in low contact resistance, reducing power transmission loss and improving the charging and discharging efficiency of the battery pack 50, indirectly extending the driving range. By using ultrasonic welding between the connector 120 and the aluminum busbar 200, the use of SMT processes and adapter nickel strips is eliminated, reducing cost and weight. Furthermore, ultrasonic welding maintains good electrical connection performance even in harsh environments such as high temperature and high humidity, improving system reliability. The ultrasonic welding process is simple and quick, improving production efficiency.

[0062] In one possible implementation, the extension direction of the connecting portion 120 is consistent with the extension direction of the circuit board body 110. This avoids the connecting portion 120 from extending toward the side away from the circuit board body 110, further saving space on both sides of the circuit board body 110 and making full use of the space.

[0063] Furthermore, there is a gap 101 between the connecting part 120 and the circuit board body 110; the flexible circuit board 100 also includes a reinforcing part 130, which is located within the gap 101 and connects the connecting part 120 and the circuit board body 110.

[0064] In the above embodiment, the extension direction of the connecting portion 120 is consistent with that of the circuit board body 110, forming a straight conductive channel. This avoids the additional inductance and resistance caused by traditional bending wiring and effectively suppresses electromagnetic interference. A specific distance 101 is maintained between the connecting portion 120 and the circuit board body 110, allowing the aluminum busbar 200 to freely expand and contract during charge and discharge cycles. By providing a reinforcing portion 130 within the distance 101, the shear force borne by the connecting portion 120 is converted into a uniformly distributed tensile stress, improving the connection strength and shock resistance between the connecting portion 120 and the circuit board body 110.

[0065] Furthermore, the connecting part 120, the reinforcing part 130, and the circuit board body 110 are integrally formed. The integral forming process of the connecting part 120 and the reinforcing part 130 can further improve the connection strength.

[0066] In one possible implementation, refer to Figure 1 and Figure 3 As shown, a second connector 500 is provided on the surface of the support member 300 facing away from the flexible circuit board 100. The support member 300 is used to bond to the housing 20 of the battery pack 50 via the second connector 500. The second connector 500 can be adhesive foam, double-sided tape, or an adhesive rubber strip. The support member 300 is bonded to the housing 20 of the battery pack 50 via the second connector 500, and at the same time, it can absorb the vibration energy of the battery pack 50, avoiding large impacts on the support member 300.

[0067] The number of second connectors 500 can be set to multiple, and the multiple second connectors 500 are evenly distributed on the surface of the support 300 away from the flexible circuit board 100. The number of second connectors 500 is not limited in this embodiment.

[0068] In one possible implementation, the integrated busbar assembly further includes a positioning bracket 600 disposed on one side of the flexible circuit board 100, which is used to fix it to the terminal post of the cell module 10.

[0069] The positioning bracket 600 has a positioning post 601, and the aluminum strip 200 has multiple posts. One of the aluminum strips 200 has a positioning hole 201, and the positioning post 601 is configured to be inserted into the positioning hole 201.

[0070] In the above embodiments, multiple aluminum busbars 200 are provided, including a first aluminum busbar 200a and a second aluminum busbar 200b. The first aluminum busbar 200a can electrically connect two adjacent battery cells, and the second aluminum busbar 200b connects different battery cell modules 10. The second aluminum busbar 200b is also called a bridging aluminum busbar 200. Figure 4 As shown, the positioning bracket 600 is sleeved on the electrode post of the battery cell. The first aluminum busbar 200a and the second aluminum busbar 200b both have positioning holes 201 corresponding to the positioning post 601, and the positioning post 601 is inserted into the positioning hole 201.

[0071] By setting up the positioning bracket 600, the flexible circuit board 100 and the aluminum busbar 200 can be positioned simultaneously, which further helps to achieve lightweighting.

[0072] In one possible implementation, an extension 140 is also included, which is electrically connected to the flexible circuit board 100.

[0073] An insert 700 is provided at one end of the extension 140 away from the flexible circuit board 100. The extension 140 is used to detachably connect to the slave board 30 of the battery pack 50 via the insert 700.

[0074] In the above embodiments, the extension 140 may be integral with the circuit board body 110 or a part of the circuit board body 110. The connector 700 on the extension 140 supports hot-plugging, enabling separation of the integrated busbar assembly from the battery pack 50 slave board 30 without tools. This improves the connection and maintenance efficiency between the integrated busbar assembly and the slave board 30. The connector 700 may be a male connector, and the slave board 30 has a female connector, with the male connector and female connector interlocking.

[0075] In one possible implementation, this application provides a battery pack 50, including a cell module 10 and the aforementioned integrated busbar assembly; the integrated busbar assembly is connected to the cell module 10. The integrated busbar assembly has already been described above and will not be repeated here.

[0076] In one possible implementation, this application provides a vehicle 40, including a body and the aforementioned battery pack 50, which has been described in detail above and will not be repeated here. This vehicle 40 achieves the technical advantages of the battery pack 50, namely, simplifying the installation structure of the integrated busbar assembly and facilitating its assembly. In this application embodiment, the vehicle 40 can be a new energy vehicle, such as a pure electric vehicle, a hybrid electric vehicle, or a range-extended electric vehicle. This application embodiment does not limit the specific structure of the vehicle 40.

[0077] In this application embodiment, vehicle 40 can also refer to large vehicles, small vehicles, special-purpose vehicles, etc. For example, according to vehicle type, vehicle 40 in this application embodiment can be a sedan, an off-road vehicle, a multi-purpose vehicle (MPV), or other types of vehicles. Of course, it can also be other types of vehicle 40, and this application embodiment does not limit it.

[0078] The implementation principle of an integrated busbar assembly, battery pack 50, and vehicle 40 according to an embodiment of this application is as follows: The integrated busbar assembly includes a flexible circuit board 100, an aluminum busbar 200, and a support member 300. The flexible circuit board 100 is used to be mounted on the cell module 10 of the battery pack 50; the aluminum busbar 200 is welded to the flexible circuit board 100 and is used to electrically connect with the cell module 10; the support member 300 covers the flexible circuit board 100 and the aluminum busbar 200, and both the flexible circuit board 100 and the aluminum busbar 200 are bonded to the support member 300. In the traditional approach, the flexible circuit board 100 is connected to the aluminum busbar 200 via an adapter nickel strip. The flexible circuit board 100 and the aluminum busbar 200 also need to be riveted to the support member 300, involving multiple processes and requiring high alignment accuracy. This application adopts a design where the support member 300 fully covers and bonds the components, allowing the flexible circuit board 100 and the aluminum busbar 200 to be pre-installed directly on the support member 300, eliminating the need for separate riveting steps. Simultaneously, the flexible circuit board 100 is directly welded to the aluminum busbar 200, eliminating the need for an adapter nickel strip, simplifying the installation structure of the integrated busbar assembly, and facilitating its assembly.

[0079] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein.

[0080] The embodiments in this application are intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed in this application. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of this application are indicated by the claims.

[0081] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. An integrated busbar assembly, characterized in that, include: Flexible circuit boards are used to mount on the cell modules of the battery pack; An aluminum busbar is welded to the flexible circuit board and is used for conductive connection with the battery cell module; A support member covers the flexible circuit board and the aluminum busbar, and both the flexible circuit board and the aluminum busbar are bonded to the support member.

2. The integrated busbar assembly according to claim 1, characterized in that, A first connector is provided on the surface of the support member facing the flexible circuit board and the aluminum busbar, and the flexible circuit board and the aluminum busbar are bonded to the support member through the first connector.

3. The integrated busbar assembly according to claim 2, characterized in that, The support is a PET hot-pressed film, and the first connector is hot melt adhesive.

4. The integrated busbar assembly according to claim 1, characterized in that, The flexible circuit board includes a circuit board body and multiple connecting portions. The multiple connecting portions are electrically connected to the circuit board body. The multiple connecting portions are located on both sides of the circuit board body along its length and are spaced apart along the length of the circuit board body. Multiple aluminum busbars are provided, and each aluminum busbar corresponds to a connecting part; The connecting part is ultrasonically welded to the aluminum busbar.

5. The integrated busbar assembly according to claim 4, characterized in that, The extension direction of the connecting part is consistent with the extension direction of the circuit board body, and there is a gap between the connecting part and the circuit board body; The flexible circuit board further includes a reinforcing portion located within the spacing, the reinforcing portion connecting the connecting portion and the circuit board body.

6. The integrated busbar assembly according to claim 2, characterized in that, A second connector is provided on the surface of the support member facing away from the flexible circuit board, and the support member is used to bond to the housing of the battery pack through the second connector.

7. The integrated busbar assembly according to any one of claims 1 to 6, characterized in that, It also includes a positioning bracket, which is disposed on one side of the flexible circuit board and is used to fix the battery cell module to the terminal post. The positioning bracket has a positioning post, and multiple aluminum bars are provided. One of the aluminum bars is provided with a positioning hole, and the positioning post is configured to be inserted into the positioning hole.

8. The integrated busbar assembly according to any one of claims 1 to 6, characterized in that, It also includes an extension portion that is electrically connected to the flexible circuit board; The extension portion is provided with a connector at one end away from the flexible circuit board, and the extension portion is used to be detachably connected to the slave board of the battery pack through the connector.

9. A battery pack, characterized in that, It includes a battery cell module and an integrated busbar assembly as described in any one of claims 1 to 8; the integrated busbar assembly is connected to the battery cell module.

10. A vehicle, characterized in that, It includes a vehicle body and a battery pack as described in claim 9, the battery pack being disposed on the vehicle body.

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