Busbar assembly and battery pack

Abstract

The utility model provides a busbar assembly and a battery pack. The busbar assembly comprises a base shell, an insulating bracket and a plurality of busbars, the base shell is detachably connected with the insulating bracket, a closed cavity is formed between the base shell and the insulating bracket, and the plurality of busbars are arranged in the cavity; a plurality of accommodating cavities are formed in one side, close to the insulating bracket, of the base shell; the plurality of busbars are accommodated in the plurality of accommodating cavities in a one-to-one correspondence manner; a mounting part is arranged on the side, away from the insulating support, of the base shell and used for mounting an electrical assembly. According to the invention, the cavity can reduce the influence of dust and the like on the busbars and has a certain protection effect on the busbars, and the accommodating cavity can realize the one-by-one installation of the busbars, thereby facilitating the improvement of the installation stability of the busbars and maintaining the normal work of the busbars. And the mounting part can be used for mounting the electrical assembly, so that the functions of the busbar assembly can be enriched, the effective utilization rate of the busbar assembly to the space in the battery pack is improved, and the optimization and improvement of the battery pack structure are facilitated.

Description

Technical Field

[0001] This application relates to the field of battery pack technology, and in particular to a busbar assembly and a battery pack. Background Technology

[0002] The CCS (Cells Contact System) module in a battery pack is a key component responsible for the electrical connection between multiple battery cells. It connects multiple cells in series and parallel to form a battery pack, serving as a current collector and energy output unit. Simultaneously, it collects voltage and monitors temperature within the battery pack, preventing abnormal conditions such as over-discharge, over-charge, and over-temperature, ensuring stable and efficient power supply. Therefore, the protection of the CCS module and its stable installation within the battery pack are crucial, affecting its proper performance. Furthermore, current CCS modules in battery packs have limited functionality, resulting in low efficient utilization of internal space and hindering the optimization and improvement of the battery pack structure. Utility Model Content

[0003] In view of this, this application aims to provide a busbar assembly and a battery pack to at least solve the problems of the lack of attention to the busbar assembly in the prior art, which leads to the ineffective performance of the busbar assembly, and the problem of the single function of the busbar assembly, which is not conducive to the optimization and improvement of the battery pack structure.

[0004] To achieve the above objectives, the technical solution of this application is implemented as follows:

[0005] This application provides a busbar assembly, including a base shell, an insulating support, and a plurality of busbars; the base shell and the insulating support are detachably connected, forming a closed cavity between the base shell and the insulating support, and the plurality of busbars are disposed in the cavity; the base shell has a plurality of receiving cavities on the side near the insulating support, and the plurality of busbars are correspondingly housed in the plurality of receiving cavities; the base shell has a mounting portion on the side away from the insulating support, and the mounting portion is used to install electrical components.

[0006] Furthermore, the base shell includes a bottom plate and side plates surrounding the bottom plate. The side plates are provided with snap-fit ​​holes, and the edge of the insulating bracket is provided with snap-fit ​​members. The snap-fit ​​members protrude from the surface of the insulating bracket in the direction toward the busbar. The snap-fit ​​members are snapped into the snap-fit ​​holes to detachably connect the base shell and the insulating bracket.

[0007] Furthermore, the snap-fit ​​component and the insulating bracket are integral parts.

[0008] Furthermore, the side plate is also provided with a connecting part, which is used to connect the housing.

[0009] Furthermore, the base plate has several vertical plates on the side near the insulating support, and the vertical plates extend in a direction perpendicular to the base plate; some of the vertical plates are connected to each other to form the receiving cavity, and some of the vertical plates are connected to the side plate to form the receiving cavity.

[0010] Furthermore, the base plate is provided with a first through hole and a second through hole, which penetrate the base plate in a direction perpendicular to the base plate; the base plate is also provided with an adapter on the side away from the insulating support, and part of the end of the busbar passes through the first through hole and is connected to the adapter; each busbar is provided with a third through hole, and the insulating support is provided with a fourth through hole, with the second through hole, the third through hole, and the fourth through hole being coaxially arranged; the busbar assembly also includes a connector, which passes through the second through hole and is inserted into the third and fourth through holes to fix the busbar and the insulating support.

[0011] Furthermore, the busbar assembly also includes a flexible circuit board; the flexible circuit board is disposed between the busbar and the insulating support, the flexible circuit board is fixedly connected to the busbar, and / or the flexible circuit board is fixedly connected to the insulating support.

[0012] Furthermore, the flexible circuit board is provided with a buffer on the side near the busbar, and / or the flexible circuit board is provided with a buffer on the side near the insulating support.

[0013] Furthermore, the insulating support is provided with a positioning post, and the flexible circuit board is provided with a positioning hole. The positioning post passes through the positioning hole to fix the flexible circuit board to the insulating support.

[0014] Furthermore, the surface of the insulating support near the busbar is provided with multiple staggered reinforcing ribs.

[0015] This application also provides a battery pack including the busbar assembly described in any of the preceding claims.

[0016] Compared with the prior art, the busbar assembly and battery pack described in this application have the following advantages:

[0017] The busbar assembly of this application features a detachable connection between the base shell and the insulating support, forming a closed cavity between them. Several busbars are housed within this cavity, which reduces the impact of moisture, dust, and other impurities on the busbars, providing some protection and thus lowering the probability of busbar failure under long-term operation. Simultaneously, the base shell has several accommodating cavities, with each busbar correspondingly housed within one of these cavities. This enhances the installation stability of the busbars, maintains their normal operation, and further reduces the probability of busbar failure. A mounting section is located on the side of the base shell away from the insulating support, allowing for the installation of electrical components. Different electrical components can perform different functions, enriching the functionality of the busbar assembly and improving the effective utilization of space within the battery pack, facilitating the optimization and improvement of the battery pack structure. Furthermore, the base shell enables the integration of busbars, the insulating support, and electrical components, contributing to increased integration within the battery pack and optimizing its internal structure.

[0018] The battery pack and the aforementioned busbar assembly have the same advantages over the prior art, and will not be repeated here. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0020] Figure 1 This is an exploded view of the busbar assembly described in the embodiments of this application;

[0021] Figure 2 This is a schematic diagram of the busbar assembly described in an embodiment of this application;

[0022] Figure 3 This is a schematic diagram of the base shell near the insulating support as described in the embodiments of this application.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1-Base shell, 10-Accommodation cavity, 11-Bottom plate, 12-Side plate, 121-Snap-fit ​​hole, 122-Connecting part, 13-Vertical plate, 14-First through hole, 15-Second through hole, 16-Adapter, 2-Insulating bracket, 21-Snap-fit, 22-Fourth through hole, 23-Positioning post, 24-Reinforcing rib, 3-Busbar, 31-Third through hole, 32-Bending part, 4-Electrical component, 5-Flexible circuit board, 51-Buffer, 52-Positioning hole, 53-Connecting piece. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The described embodiments are only a part of the embodiments of this application, not all of them. 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.

[0026] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0027] It should be understood that the phrase "in one embodiment" throughout the specification means that a specific feature, structure, or characteristic related to an embodiment is included in at least one embodiment of this application. Therefore, "in one embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0028] The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] Figure 1 This is an exploded view of the busbar assembly described in the embodiments of this application. Figure 2 This is a schematic diagram of the busbar assembly described in an embodiment of this application, with reference to... Figure 1 and Figure 2 This application provides a busbar assembly, including a base shell 1, an insulating support 2, and a plurality of busbars 3; the base shell 1 and the insulating support 2 are detachably connected, forming a closed cavity between the base shell 1 and the insulating support 2, and the plurality of busbars 3 are disposed in the cavity; the base shell 1 is provided with a plurality of receiving cavities 10 on the side near the insulating support 2, and the plurality of busbars 3 are correspondingly housed in the plurality of receiving cavities 10; the base shell 1 is provided with a mounting part on the side away from the insulating support 2, and the mounting part is used to install electrical components.

[0030] Specifically, the base shell 1 can be in various forms such as square, rectangular, and circular. Based on the installation requirements of most components in the battery pack, the base shell 1 adopts a rectangular base shell 1. In addition, the base shell 1 can be made of polytetrafluoroethylene (PTFE), polyimide (PI), rigid plastic, silicone rubber, composite materials, etc., which have good insulation, heat resistance, high temperature resistance, and stability. When electrical components 4 or busbars 3 are installed on the base shell 1, electrical isolation between the base shell 1 and the electrical components 4 or busbars 3 can be achieved.

[0031] Busbar 3 is a component included in the CCS module. Busbar 3 can be made of metal plates such as copper or aluminum, which have good conductivity. Busbar 3 is connected in series or parallel with multiple battery cells in the battery pack, and can collect the current generated by multiple battery cells. When it is necessary to output current to an external load or system, the collected current is evenly distributed to each load or system to realize the charging and discharging function of the battery pack.

[0032] The insulating bracket 2 is also a component included in the CCS assembly. The insulating bracket 2 is detachably connected to the base shell 1. This detachable connection can be achieved through methods including, but not limited to, fastener assembly, locking snap-fit, and snap-fit ​​connections; this application does not impose any restrictions on its implementation. A closed cavity is formed between the base shell 1 and the insulating bracket 2, and several busbars 3 are housed within this cavity. The insulating bracket 2 provides support for the busbars 3, improving their installation stability. The insulating bracket 2 can be made of materials with good insulation properties, such as epoxy resin, polycarbonate, plastic, or composite materials. While supporting the busbars 3, it also provides effective electrical insulation, preventing short circuits caused by contact between the busbars 3 and the insulating bracket, thus ensuring the normal operation of the power system within the battery pack. Simultaneously, the cavity provides protection for the busbars 3, preventing external moisture, mist, dust, etc., from entering the cavity and causing corrosion. This reduces the probability of busbar failure under long-term operation, improving the battery pack's lifespan and safety.

[0033] The base shell 1 has several accommodating cavities 10 on the side near the insulating support 2. The number of accommodating cavities 10 is set according to the number of busbars 3. Each accommodating cavity 10 contains a busbar 3, thereby further improving the installation stability of the busbar 3 in the cavity, maintaining the normal operation of the busbar 3, and helping to reduce the probability of the busbar 3 failing under long-term operation.

[0034] The base shell 1 has a mounting portion on the side opposite to the insulating support 2. This mounting portion is used to mount the electrical component 4. For example, the electrical component 4 can be a component used to manage and distribute the battery pack's electrical energy. For instance, the electrical component 4 can be a component of the BDU (Battery Disconnect Unit) module in the battery management system, such as a relay, current sensor, fuse, high and low voltage connectors, resistor, sealing ring, etc. Of course, the electrical component 4 can also be a component from other modules in the battery management system; this embodiment will not elaborate further on this. Thus, the base shell 1 integrates the busbar 3, the insulating support 2, and the electrical component 4, which helps to improve the integration of components within the battery pack and optimize the internal structure of the battery pack.

[0035] Therefore, in this embodiment of the busbar assembly, the base shell 1 and the insulating support 2 are detachably connected, forming a closed cavity between the base shell 1 and the insulating support 2. Several busbars 3 are disposed within this cavity, which provides some protection for the busbars 3 and reduces the probability of failure under long-term operation. Simultaneously, the base shell 1 has a receiving cavity 10, in which the busbars 3 are correspondingly housed, improving the installation stability of the busbars 3, further reducing the probability of failure, and extending the service life and safety of the busbar assembly. A mounting portion is provided on the side of the base shell 1 away from the insulating support 2, allowing the installation of electrical components 4. Different electrical components 4 can perform different functions, thus enriching the functionality of the busbar assembly, improving the effective utilization of the battery pack space, and facilitating the optimization and improvement of the battery pack structure.

[0036] Furthermore, refer to Figure 1 In some embodiments of this application, the base shell 1 includes a bottom plate 11 and a side plate 12 surrounding the bottom plate 11. The side plate 12 is provided with a snap-fit ​​hole 121. The edge of the insulating bracket 2 is provided with a snap-fit ​​member 21. The snap-fit ​​member 21 protrudes from the surface of the insulating bracket 2 in the direction toward the busbar 3. The snap-fit ​​member 21 is snapped into the snap-fit ​​hole 121 to detachably connect the base shell 1 and the insulating bracket 2.

[0037] Specifically, when the base shell 1 is a rectangular structure, the bottom plate 11 is a rectangular plate, and the side plates 12 surround the four sides of the bottom plate 11. The base shell 1 can be processed into a single piece using an integral molding process, with the bottom plate 11 and the side plates 12 being different parts of the base shell 1. Alternatively, the base shell 1 can be assembled and connected from independent parts. The bottom plate 11 and the side plates 12 are assembled and connected together by fasteners such as bolts and screws, or welded together by laser welding, thereby forming a complete base shell 1.

[0038] The snap-fit ​​holes 121 are provided on the side plates 12, specifically on two opposite side plates 12. Correspondingly, snap-fit ​​members 21 are provided on two opposite sides of the insulating bracket 2. The snap-fit ​​members 21 protrude from the surface of the insulating bracket 2 in the direction toward the busbar 3. The size of the protrusion depends on the position of the snap-fit ​​holes 121, ensuring that the snap-fit ​​members 21 can be effectively snapped into the snap-fit ​​holes 121. The number of snap-fit ​​holes 121 and snap-fit ​​members 21 can be one, two, or more. Each snap-fit ​​hole 121 is engaged with one snap-fit ​​member 21. When there are multiple snap-fit ​​holes 121 and snap-fit ​​members 21, the multiple snap-fit ​​holes 121 are evenly distributed on the side plates 12, and the multiple snap-fit ​​members 21 are evenly distributed along the edges of the insulating bracket 2, so as to improve the reliability and stability of the detachable connection between the base shell 1 and the insulating bracket 2.

[0039] Furthermore, in some embodiments of this application, the snap-fit ​​component 21 can be a component independent of the insulating bracket 2, and can be fixedly connected to the insulating bracket 2 by means of fastener assembly, adhesive bonding, or limiting snap-fit, which makes it easier to process the snap-fit ​​component 21 and the insulating bracket 2 and reduces the processing difficulty. The snap-fit ​​component 21 and the insulating bracket 2 can also be processed into a single piece by an integral molding process, which can save subsequent connection processes, help save the production cost of the insulating bracket 2, and also help improve the connection reliability between the snap-fit ​​component 21 and the insulating bracket 2.

[0040] Furthermore, in some embodiments of this application, the side plate 12 is also provided with a connecting portion 122, which is used to connect to the housing. For example, see... Figure 1 and Figure 2 The connecting part 122 is a protrusion protruding from the surface of the side plate 12. Correspondingly, the housing needs to be provided with a buckle adapted to the protrusion. The protrusion and the buckle are engaged to connect the housing and the base shell 1. The connection method is simple and reliable, and it is also convenient to disassemble and separate the housing and the base shell 1. More specifically, the surface of the protrusion can be set as a slope to facilitate the smooth engagement of the protrusion and the buckle. There can be multiple protrusions, which are evenly distributed on the side plate 12 to improve the reliability and stability of the connection between the housing and the base shell 1. In some embodiments, the housing can be in the form of a cover to protect the electrical components 4. The cover can also be made of polytetrafluoroethylene (PTFE), polyimide (PI), rigid plastic, silicone rubber, composite materials, etc., which have good insulation, heat resistance, high temperature resistance, stability, etc., which can effectively prevent short circuits caused by contact between the cover and the electrical components 4, and ensure the dustproofness and reliability of the cover.

[0041] Furthermore, Figure 3 This is a schematic diagram of the base shell 1 near the insulating support 2 as described in the embodiment of this application, with reference to... Figure 3In some embodiments of this application, a plurality of vertical plates 13 are provided on the side of the base plate 11 near the insulating support 2, and the vertical plates 13 extend in a direction perpendicular to the base plate 11; some of the vertical plates 13 are connected to each other to form a receiving cavity 10, and some of the vertical plates 13 are connected to the side plate 12 to form a receiving cavity 10.

[0042] Specifically, several vertical plates 13 extend in a direction perpendicular to the base plate 11, and are arranged in an orderly manner on the base plate 11. Some of the vertical plates 13 are interconnected to form a receiving cavity 10, and some of the vertical plates 13 are connected to the side plates 12 to form a receiving cavity 10. Figure 3 On the base shell 1 shown, every four vertical plates 13 form a rectangular or square accommodating cavity 10. The four vertical plates 13 are connected in pairs, or every three vertical plates 13 and the side plates 12 form a rectangular or square accommodating cavity 10. It should be noted that the connection between the vertical plates 13 or between the vertical plates 13 and the side plates 12 can be achieved by fastener assembly, laser welding, adhesive bonding, or snap-fitting. This embodiment does not limit the specific method used.

[0043] More specifically, the surface of the vertical plate 13 near the receiving cavity 10 can be roughened, and the busbar 3 is housed in the receiving cavity 10, and the busbar 3 is fixed by the friction between it and the surface of the vertical plate 13; or, the surface of the vertical plate 13 near the receiving cavity 10 can also be provided with a limiting groove, and the busbar 3 is fixed by being locked in the limiting groove; or, the end of the vertical plate 13 near the insulating support 2 can be provided with a hook, and the hook extends in the direction toward the receiving cavity 10, and the busbar 3 is fixed by being locked in the receiving cavity 10.

[0044] Furthermore, refer to Figure 1 In some embodiments of this application, the base plate 11 is provided with a first through hole 14 and a second through hole 15, which penetrate the base plate 11 in a direction perpendicular to the base plate 11; the base plate 11 is also provided with a connector 16 on the side away from the insulating support 2, and the end of part of the busbar 3 passes through the first through hole 14 and is connected to the connector 16; each busbar 3 is provided with a third through hole 31, and the insulating support 2 is provided with a fourth through hole 22, and the second through hole 15, the third through hole 31 and the fourth through hole 22 are coaxially arranged; the busbar assembly also includes a connector, which passes through the second through hole 15 and is installed in the third through hole 31 and the fourth through hole 22 to fix the busbar 3 and the insulating support 2.

[0045] Specifically, the end of the busbar 3 extends in a direction perpendicular to the base plate 11 to form a bent portion 32. A first through hole 14 is provided on the periphery of the adapter 16 and penetrates the base plate 11 in a direction perpendicular to the base plate 11. The bent portion 32 of the busbar 3 passes through the first through hole 14 and extends out of the first through hole 14 to connect with the adapter 16. The adapter 16 enables the busbar 3 to be electrically connected to other conductive bars. Specifically, both the busbar 3 and the conductive bars are attached to the adapter 16. The adapter 16 provides mechanical fixation for the busbar 3 and the conductive bars, maintaining electrical contact between the busbar 3 and the conductive bars, thereby enabling current transmission between the busbar 3 and the conductive bars. The conductive bars can transmit current to external loads or systems, thereby realizing the charging and discharging function of the battery pack. The adapter 16 can be made of plastic or other non-metallic materials. The adapter 16 itself does not have electrical conductivity, but only serves to connect and fix the busbar 3 and the conductive busbar. The surfaces of the busbar 3 and the conductive busbar are in contact with each other to achieve electrical connection.

[0046] The base plate 11 is provided with a plurality of second through holes 15, which are arranged in an array on the base plate 11 and penetrate the base plate 11 in a direction perpendicular to the base plate 11. Correspondingly, each busbar 3 is provided with a third through hole 31, which penetrates the busbar 3 in a direction perpendicular to the base plate 11. The insulating bracket 2 is provided with a fourth through hole 22, which penetrates the insulating bracket 2 in a direction perpendicular to the base plate 11. The second through holes 15, the third through holes 31 and the fourth through holes 22 are coaxially arranged. The second through holes 15, the third through holes 31 and the fourth through holes 22 can be any shape such as circular holes, elliptical holes, square holes, etc. The connector passes through the second through hole 15 and is installed in the third through hole 31 and the fourth through hole 22 to achieve the pre-fixation of the busbar 3 and the insulating bracket 2. Once the end of the connector facing away from the base plate 11 is inserted into the housing of the battery pack and fixedly connected to the housing of the battery pack, the final fixing of the busbar 3 and the insulating bracket 2 can be achieved.

[0047] The connectors can be bolts, etc., and there are several connectors. Each connector passes through a second through hole 15 and is inserted into a corresponding third through hole 31 and fourth through hole 22 to fix the busbar 3 and the insulating bracket 2. The size of the second through hole 15 can be slightly larger than the sizes of the third through holes 31 and 22 to ensure that the connectors can pass smoothly through the second through hole 15 and into the third through holes 31 and 22. Since the busbar 3 generates heat during current flow, the second through hole 15, in addition to providing a passage for the connectors, also serves as a heat dissipation hole to allow the heat generated by the busbar 3 to dissipate, thus helping to reduce the temperature of the busbar 3 and ensure its normal operation.

[0048] Furthermore, refer to Figure 1In some embodiments of this application, the busbar assembly further includes a flexible circuit board 5; the flexible circuit board 5 is disposed between the busbar 3 and the insulating support 2, and is fixedly connected to the busbar 3, and / or, is fixedly connected to the insulating support 2. Specifically, the flexible circuit board 5 (Flexible Printed Circuit, FPC) is also a component included in the CCS assembly. The flexible circuit board 5 is a circuit board made of flexible copper-clad laminate as a substrate, serving as a signal transmission medium, and features high wiring density, good bendability, lightweight, and flexible manufacturing processes. The flexible circuit board 5 is disposed within the cavity and located between the busbar 3 and the insulating support 2. The flexible circuit board 5 can be fixedly connected to the busbar 3 to achieve installation and fixation, or it can be fixedly connected to the insulating support 2 to achieve installation and fixation.

[0049] In this embodiment, the flexible circuit board 5 has a connecting piece 53 on its edge, which is fixedly connected to the busbar 3. The connecting piece 53 can be fixed to the flexible circuit board 5 by laser welding, adhesive bonding, or other methods. The connecting piece 53 has good conductivity and can be made of metal, etc. The connecting piece 53 enables electrical connection between the busbar 3 and the flexible circuit board 5. Simultaneously, the flexible circuit board 5 also has good electrical insulation and chemical corrosion resistance, ensuring safe operation of the circuit. A fuse protection current design can be incorporated into the flexible circuit board 5. In the event of a short circuit in the battery pack, the fuse protection will directly melt the circuit, thereby preventing problems such as fire or explosion of the battery pack.

[0050] Furthermore, refer to Figure 1 In some embodiments of this application, a buffer 51 is provided on the side of the flexible circuit board 5 near the busbar 3, or a buffer 51 is provided on the side of the flexible circuit board 5 near the insulating support 2, or a buffer 51 is provided on both the side of the flexible circuit board 5 near the busbar 3 and the side of the flexible circuit board 5 near the insulating support 2. The buffer 51 is made of an elastic material with deformation capability, such as silicone rubber, polyurethane, polyethylene, fluororubber, nitrile rubber, etc. The buffer 51 can prevent hard collisions between the flexible circuit board 5 and the busbar 3 or the insulating support 2, thereby helping to strengthen the protection of the busbar 3 and the insulating support 2 and extend the service life of the flexible circuit board 5, the busbar 3 and the insulating support 2.

[0051] Furthermore, refer to Figure 1 In some embodiments of this application, the insulating bracket 2 is provided with a positioning post 23, and the flexible circuit board 5 is provided with a positioning hole 52. The positioning post 23 passes through the positioning hole 52 to fix the flexible circuit board 5 to the insulating bracket 2.

[0052] Specifically, the positioning post 23 is located on the edge of the insulating bracket 2. The positioning post 23 and the insulating bracket 2 can be processed into a single piece by integral molding process, or it can be fixed to the insulating bracket 2 by assembly connection, welding, adhesive connection, etc. In this embodiment, the positioning post 23 is formed on the surface of the insulating bracket 2 by hot riveting process. Correspondingly, the flexible circuit board 5 is provided with positioning hole 52, and the positioning post 23 passes through the positioning hole 52 to realize the fixed connection between the flexible circuit board 5 and the insulating bracket 2.

[0053] Furthermore, in some embodiments of this application, the surface of the insulating support 2 near the busbar 3 is provided with multiple staggered reinforcing ribs 24. Figure 1 In the busbar assembly shown, the reinforcing ribs 24 are distributed in a grid pattern on the insulating support 2. The arrangement of the reinforcing ribs 24 can effectively improve the strength and rigidity of the insulating support 2 and extend the service life of the insulating support 2.

[0054] This application also provides a battery pack, including the busbar assembly of any of the foregoing embodiments. Additionally, the battery pack also includes a housing, battery packs, etc., with both the battery packs and the busbar assembly housed within the housing. The busbar assembly constitutes a component of the battery management system, and is electrically connected to the battery pack for monitoring and adjusting the battery pack's operating status to ensure the normal operation of the battery pack's charging and discharging functions. The busbar assembly has high integration and occupies less space within the housing, which is beneficial for the structural design of the battery management system and enables optimization and improvement of the battery pack.

[0055] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only 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 terminal device 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 terminal device. 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 terminal device that includes said element.

[0056] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A busbar assembly, characterized in that, Includes a base shell, an insulating support, and several busbars; The base shell and the insulating support are detachably connected, and a closed cavity is formed between the base shell and the insulating support, and a plurality of the busbars are disposed in the cavity; The base shell is provided with a plurality of receiving cavities on the side near the insulating support, and the plurality of busbars are respectively housed in the plurality of receiving cavities; The base shell has a mounting portion on the side opposite to the insulating support, and the mounting portion is used to install electrical components.

2. The busbar assembly according to claim 1, characterized in that, The base shell includes a bottom plate and side plates surrounding the bottom plate. The side plates are provided with snap-fit ​​holes, and the edge of the insulating bracket is provided with snap-fit ​​members. The snap-fit ​​members protrude from the surface of the insulating bracket in the direction toward the busbar. The snap-fit ​​component is snapped into the snap-fit ​​hole to detachably connect the base shell to the insulating bracket.

3. The busbar assembly according to claim 2, characterized in that, The snap-fit ​​component and the insulating bracket are an integral part.

4. The busbar assembly according to claim 2, characterized in that, The side plate is also provided with a connecting part, which is used to connect the housing.

5. The busbar assembly according to claim 2, characterized in that, The base plate is provided with several vertical plates on the side near the insulating support, and the vertical plates extend in a direction perpendicular to the base plate; Some of the vertical plates are connected to each other to form the receiving cavity, and some of the vertical plates are connected to the side plates to form the receiving cavity.

6. The busbar assembly according to claim 2, characterized in that, The base plate is provided with a first through hole and a second through hole, and the first through hole and the second through hole penetrate the base plate in a direction perpendicular to the base plate; The base plate is also provided with an adapter on the side opposite to the insulating support, and part of the end of the busbar passes through the first through hole and is connected to the adapter; Each of the busbars is provided with a third through hole, and the insulating bracket is provided with a fourth through hole. The second through hole, the third through hole, and the fourth through hole are coaxially arranged. The busbar assembly also includes a connector that passes through the second through hole and is disposed within the third and fourth through holes to fix the busbar and the insulating support.

7. The busbar assembly according to claim 1, characterized in that, It also includes flexible circuit boards; The flexible circuit board is disposed between the busbar and the insulating support, and the flexible circuit board is fixedly connected to the busbar, and / or the flexible circuit board is fixedly connected to the insulating support.

8. The busbar assembly according to claim 7, characterized in that, The flexible circuit board has a buffer on the side near the busbar, and / or the flexible circuit board has a buffer on the side near the insulating support.

9. The busbar assembly according to claim 7, characterized in that, The insulating support is provided with a positioning post, and the flexible circuit board is provided with a positioning hole. The positioning post passes through the positioning hole to fix the flexible circuit board to the insulating support.

10. The busbar assembly according to claim 1, characterized in that, The insulating support has multiple staggered reinforcing ribs on the surface near the busbar.

11. A battery pack, characterized in that, Includes the busbar assembly as described in any one of claims 1 to 10.

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