Busbar assembly, battery module, battery pack and vehicle

Abstract

The embodiment of the application provides a kind of convergence assembly, battery module, battery pack and vehicle, it is related to vehicle accessory technical field.The convergence assembly includes: bottom plate;Multiple positioning plates, multiple positioning plates are connected with bottom plate, multiple positioning plates are spaced apart, and positioning space is formed between adjacent positioning plates;Circuit board, circuit board is connected with bottom plate, positioning space is used to accommodate circuit board, and circuit board is in contact with positioning plate.The convergence assembly, battery module, battery pack and vehicle can position the circuit board, prevent the position deviation of circuit board from leading to poor contact, and indirectly improve the overall performance of battery module.

Description

Technical Field

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

[0002] A battery module is a module composed of several battery cells connected in series or parallel, used to centrally output electrical energy; while a battery pack is a complete battery system assembled from multiple battery modules, and is the core component that provides power to electric vehicles and other equipment.

[0003] In related technologies, a battery module includes a busbar assembly and multiple battery cells. The busbar assembly includes a base plate, multiple electrical connectors, and a circuit board. Multiple battery cells are disposed on one side of the base plate, and multiple electrical connectors are disposed on the other side of the base plate. The circuit board is connected to the base plate, and the circuit board and the electrical connectors are disposed on the same side of the base plate. The electrical connectors are used to electrically connect the battery cells to the circuit board, while the circuit board is used to connect the individual battery cells in the battery module to realize the transmission and distribution of electrical energy.

[0004] However, during actual installation, positional deviations can easily occur between the circuit board and the base plate, leading to poor contact between the circuit board and the electrical connectors. This poor contact reduces the efficiency of power transmission, thereby affecting the overall performance of the battery module. Utility Model Content

[0005] This application provides a busbar assembly, a battery module, a battery pack, and a vehicle to solve the technical problem of positional deviation between the circuit board and the base plate in related technologies, which affects the overall performance of the battery module.

[0006] In a first aspect, embodiments of this application provide a bus component, including:

[0007] Base plate;

[0008] Multiple positioning plates are provided, each of which is connected to the base plate. The positioning plates are spaced apart, and a positioning space is formed between adjacent positioning plates.

[0009] A circuit board is connected to the base plate, and the positioning space is used to accommodate the circuit board, with the circuit board abutting against the positioning plate.

[0010] In some embodiments, a plurality of electrical connectors are also included, and each of the positioning plates is provided with a plurality of grooves for accommodating the electrical connectors.

[0011] In some embodiments, a plurality of first positioning elements are further included, each of the grooves being provided with a first positioning element, the first positioning element being used to position the electrical connector piece within the groove.

[0012] In some embodiments, the first positioning member includes a plurality of positioning posts disposed in the groove, and the electrical connector is provided with a plurality of positioning holes. The positioning posts are used to insert into or disengage from the positioning holes to position or disengage the electrical connector.

[0013] In some embodiments, the positioning plate is provided with a plurality of connecting slots, one end of which is connected to the groove and the other end of which is connected to the positioning space. The circuit board is electrically connected to the electrical connecting piece through the connecting slot.

[0014] Secondly, embodiments of this application provide a battery module including the aforementioned busbar assembly. The battery module includes a cover plate and a second positioning member. The cover plate is connected to the base plate, and the second positioning member is connected to the cover plate and is used to position the cover plate on the base plate.

[0015] In some embodiments, the second positioning member includes a plurality of protrusions, all of which are connected to the cover plate. The base plate and the positioning plate are provided with a plurality of recesses, and the protrusions are used to insert into or detach from the recesses to position or detach from the cover plate.

[0016] In some embodiments, a marker is provided on the side of the cover plate opposite to the base plate, the marker being used to locate the position of the foam on the cover plate.

[0017] Thirdly, embodiments of this application provide a battery pack, including a frame and the battery module connected to the frame.

[0018] Fourthly, embodiments of this application provide a vehicle, including a vehicle body and the battery pack connected to the vehicle body.

[0019] This application provides a busbar assembly, a battery module, a battery pack, and a vehicle. The busbar assembly provided in this application employs positioning plates, forming positioning spaces between adjacent positioning plates. When installing a circuit board, the circuit board is placed within the positioning space, causing it to abut against the positioning plates, thereby positioning the circuit board. This improves the alignment accuracy between the circuit board and the base plate, preventing problems such as poor contact and increased resistance caused by circuit board position deviations. This indirectly improves the efficiency and stability of power transmission. The use of positioning plates simplifies the circuit board assembly process, reduces errors from manual operation, lowers rework and scrap rates during production, improves the production efficiency of the battery module, enhances the reliability and consistency of the battery module, and extends the service life of the battery module. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0021] Figure 1 An exploded structural diagram of the assembly state of the busbar component provided in this application;

[0022] Figure 2 An exploded view of the base plate, circuit board, and electrical connection pieces of the busbar assembly provided in this application;

[0023] Figure 3 An exploded view of the base plate and electrical connection piece of the busbar assembly provided in this application;

[0024] Figure 4 for Figure 1 Schematic diagram of the middle cover plate;

[0025] Figure 5 for Figure 4 A structural diagram from another angle.

[0026] Explanation of reference numerals in the attached figures:

[0027] 100. Base plate; 110. Recessed hole;

[0028] 200, Positioning plate; 210, Positioning space; 220, Groove; 230, Connecting groove;

[0029] 300. Circuit board;

[0030] 400. Electrical connector; 410. Positioning hole;

[0031] 500. First positioning component; 510. Positioning pin;

[0032] 600. Cover plate; 610. Identification parts;

[0033] 700. Second positioning element; 710. Protrusion;

[0034] 800, battery cell; 900, 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] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0037] In related technologies, a battery module includes a busbar assembly and multiple battery cells. The busbar assembly includes a base plate, multiple electrical connectors, and a circuit board. Multiple battery cells are arranged on one side of the base plate, while multiple electrical connectors are located on the other side of the base plate and connected to the electrode portions of the battery cells to achieve electrical connection between the battery cells. The circuit board is connected to the base plate and is located on the same side of the base plate so that the circuit board can be easily connected to the electrical connectors. The electrical connectors act as an intermediate medium to ensure that the current from the battery cells can be smoothly conducted to the circuit board. The circuit board undertakes the key task of integrating the various battery cells and realizing the transmission and distribution of electrical energy, providing a stable electrical support architecture for the overall operation of the battery module and ensuring its normal discharge and charging functions during use.

[0038] However, in actual installation operations, due to various external factors (such as processing precision and assembly personnel's operating techniques), the circuit board is prone to positional deviation when assembling with the base plate. Although this positional deviation may seem minor, its consequences are serious. Once a deviation occurs, it is difficult to ensure a good contact between the circuit board and the electrical connectors, leading to poor contact. This poor contact will directly increase the resistance during power transmission, resulting in voltage drop and other problems. When a large number of battery cells are connected in series or parallel, this phenomenon will be further amplified, ultimately significantly reducing the power transmission efficiency of the entire battery module, affecting the charging and discharging performance of the battery module, and even causing safety hazards such as overheating and overload of the battery module. This has an extremely adverse effect on the overall performance and service life of the battery module, restricting the performance of the battery module in practical applications, reducing its reliability and stability, and posing potential risks to the operation of the equipment.

[0039] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0040] Combination Figure 1 and Figure 2This application provides a busbar assembly, including a base plate 100, a plurality of positioning plates 200 and a circuit board 300. The plurality of positioning plates 200 are all connected to the base plate 100 and are spaced apart. A positioning space 210 is formed between adjacent positioning plates 200. The circuit board 300 is connected to the base plate 100 and the positioning space 210 is used to accommodate the circuit board 300. The circuit board 300 abuts against the positioning plates 200.

[0041] By adopting the above technical solution, when installing the circuit board 300, the circuit board 300 is placed in the positioning space 210 and driven to abut against the positioning plate 200, thereby positioning the circuit board 300, improving the alignment accuracy between the circuit board 300 and the base plate 100, and preventing problems such as poor contact and increased resistance caused by the positional deviation of the circuit board 300. This indirectly improves the efficiency and stability of power transmission. The use of the positioning plate 200 simplifies the assembly process of the circuit board 300, reduces errors from manual operation, reduces rework rate and scrap rate in the production process, improves the production efficiency of the battery module, enhances the reliability and consistency of the battery module, and extends the service life of the battery module.

[0042] In this embodiment, two positioning plates 200 are provided. The two positioning plates 200 are located on the same side of the base plate 100, and the two positioning plates 200 are respectively located on opposite sides of the base plate 100. A positioning space 210 is formed between the two positioning plates 200, and the positioning space 210 is located in the middle of the base plate 100.

[0043] In other embodiments, the number of positioning plates 200 can be adaptively adjusted as needed. For example, four positioning plates 200 can be set, and three positioning spaces 210 can be formed between the four positioning plates 200, so that three circuit boards 300 can be installed in the three positioning spaces 210.

[0044] In this embodiment, the circuit board 300 is U-shaped and is a flexible circuit board. The circuit board 300 is fixed to the base plate 100 by adhesive bonding.

[0045] Flexible circuit boards (PCBs) possess flexibility and bendability, enabling them to adapt to various complex spatial layouts and meet the compact and irregular structural requirements of battery modules, thereby achieving efficient space utilization. The thin and light characteristics of PCBs help reduce the overall weight of battery modules and improve the portability of devices. PCBs also have good conductivity and anti-interference capabilities, ensuring the stability of power transmission and the accuracy of signal acquisition. The integrated design of PCBs can reduce the number of connection points and wiring, lower assembly difficulty and production costs, and improve the reliability and consistency of the system.

[0046] In this embodiment, the positioning plate 200 is integrally formed with the base plate 100. In other embodiments, the positioning plate 200 can also be fixed to the base plate 100 by welding, pasting or bolting.

[0047] In this embodiment, the base plate 100 is made of polycarbonate, which is a high-performance engineering plastic with high strength, high transparency, good impact resistance, heat resistance and dimensional stability. By using polycarbonate material and manufacturing the base plate 100 through vacuum forming process, not only can a lightweight design be achieved and the overall weight of the battery module be reduced, but also the mold cost can be reduced, thereby controlling the production cost.

[0048] Combination Figure 2 and Figure 3 The busbar assembly also includes multiple electrical connectors 400, and each positioning plate 200 is provided with multiple grooves 220 for accommodating the electrical connectors 400.

[0049] By adopting the above technical solution, the groove 220 can position the electrical connector 400 on the base plate 100. By cooperating with the positioning space 210 to position the circuit board 300, the connection reliability between the electrical connector 400 and the circuit board 300 can be improved. This ensures that the contact point between the electrical connector 400 and the circuit board 300 is precisely aligned during installation, thereby reducing contact resistance and preventing poor contact or short circuits caused by positional deviation between the circuit board 300 and the electrical connector 400. This also improves the power transmission efficiency between the circuit board 300 and the electrical connector 400, reduces heat generation and power loss caused by poor contact, and enhances the overall performance and safety of the battery module.

[0050] In this embodiment, a plurality of battery cells 800 are provided on the side of the base plate 100 away from the positioning plate 200, and each electrical connector 400 is provided corresponding to two battery cells 800; in other embodiments, each electrical connector 400 may be provided corresponding to a different number, such as four battery cells 800.

[0051] In this embodiment, the electrical connector 400 is made of aluminum. Aluminum has excellent conductivity, which can reduce the resistance of the electrical connector 400, thereby reducing energy loss during power transmission and improving the power transmission efficiency of the battery module. The aluminum sheet has stable mechanical properties and can withstand certain mechanical stress, ensuring that the electrical connector 400 maintains good contact stability during the assembly and use of the battery module. Aluminum has good corrosion resistance and oxidation resistance, which can maintain good electrical performance for a long time in the complex working environment of the battery module and extend the service life of the electrical connector 400.

[0052] In this embodiment, the circuit board 300 and the base plate 100, the electrical connector 400 and the circuit board 300, and the electrical connector 400 and the battery cell 800 are all connected by laser welding. The electrical connector 400 is rectangular, and the groove 220 is configured to cooperate with the rectangular electrical connector 400. When the electrical connector 400 is placed in the groove 220, the periphery of the electrical connector 400 can abut against the periphery of the groove 220, thereby preventing the electrical connector 400 from moving in the groove 220 and further improving the positioning accuracy of the groove 220 for the electrical connector 400.

[0053] Combination Figure 2 and Figure 3 The busbar assembly also includes a plurality of first positioning elements 500, each of which is provided in a groove 220. The first positioning elements 500 are used to position the electrical connector 400 in the groove 220.

[0054] By adopting the above technical solution, the first positioning member 500 can position the electrical connector 400 in the groove 220, thereby preventing positional deviation between the electrical connector 400 and the groove 220, further improving the connection reliability between the electrical connector 400 and the circuit board 300, and ensuring that the contact point between the electrical connector 400 and the circuit board 300 is precisely aligned during installation, thereby further reducing contact resistance, preventing poor contact or short circuit problems caused by positional deviation between the circuit board 300 and the electrical connector 400, and further improving the power transmission efficiency between the circuit board 300 and the electrical connector 400.

[0055] Combination Figure 2 and Figure 3 The first positioning member 500 includes a plurality of positioning posts 510, which are disposed in the groove 220. The electrical connector 400 is provided with a plurality of positioning holes 410. The positioning posts 510 are used to insert into or detach from the positioning holes 410 to position or detach from the positioning electrical connector 400.

[0056] By adopting the above technical solution, when the electrical connector 400 is placed in the groove 220, the positioning post 510 can be driven to cooperate with the positioning hole 410, thereby positioning the electrical connector 400 in the groove 220. The arrangement of the positioning post 510 and the positioning hole 410 is simple and indirectly improves the positioning accuracy of the electrical connector 400.

[0057] In this embodiment, the cross-section of the positioning post 510 is set to be circular, and the positioning hole 410 is configured to cooperate with the circular positioning post 510; in other embodiments, the shapes of the positioning post 510 and the positioning hole 410 can be adaptively adjusted as needed, for example, the cross-section of the positioning post 510 can be set to be rectangular, and the positioning hole 410 can be configured to cooperate with the rectangular positioning post 510.

[0058] In this embodiment, the first positioning member 500 includes two positioning posts 510, and each electrical connector 400 is provided with two positioning holes 410. By using the two positioning posts 510 and the two positioning holes 410 to cooperate, the electrical connector 400 is prevented from rotating in the groove 220, thereby further improving the positioning accuracy of positioning the electrical connector 400 in the groove 220.

[0059] In other embodiments, the number of positioning posts 510 and positioning holes 410 can be adaptively adjusted as needed, for example, setting four or five positioning posts 510 and positioning holes 410, etc.

[0060] In this embodiment, the positioning post 510 is set as a rivet. After the positioning post 510 passes through the positioning hole 410, the positioning post 510 is processed by a hot riveting process. Hot riveting is a process of fixing the rivet by heating it. During the hot riveting process, the rivet (usually made of plastic or metal) is heated to a temperature close to its melting point, so that it softens or partially melts. Then it is inserted into the positioning hole 410 and is pressed to make it tightly bonded to the electrical connector 400. As the rivet cools and solidifies, the positioning post 510 can fix the electrical connector 400. The hot riveting process has the advantages of simple operation, low cost, high connection strength and neat appearance.

[0061] Combination Figure 2 and Figure 3 The positioning plate 200 is provided with multiple connecting slots 230. One end of the connecting slot 230 is connected to the groove 220, and the other end of the connecting slot 230 is connected to the positioning space 210. The circuit board 300 is electrically connected to the electrical connecting piece 400 through the connecting slot 230.

[0062] In this embodiment, a portion of the circuit board 300 can be extended into the connecting groove 230 and connected to the electrical connector 400. Alternatively, a separate connector can be provided within the connecting groove 230 to connect the circuit board 300 and the electrical connector 400. The connecting groove 230 can position the circuit board 300 or the connector, thereby further preventing positional deviations between the circuit board 300 and the electrical connector 400, further improving the connection reliability between the electrical connector 400 and the circuit board 300. Furthermore, the connecting groove 230 prevents the circuit board 300 and the connector from protruding from the positioning plate 200, thereby reducing the overall thickness of the battery module and indirectly reducing the space occupied by the battery module.

[0063] In this embodiment, since each electrical connector 400 is corresponding to two battery cells 800, two connecting slots 230 are provided on the positioning plate 200 at the location of each groove 220; in other embodiments, the number of connecting slots 230 can be adaptively adjusted according to the number of battery cells 800.

[0064] Combination Figure 1 , Figure 4 and Figure 5 This application embodiment also provides a battery module, including the busbar assembly of any of the above embodiments. The battery module includes a cover plate 600 and a second positioning member 700. The cover plate 600 is used to connect with the base plate 100, and the second positioning member 700 is connected to the cover plate 600 and used to position the cover plate 600 on the base plate 100.

[0065] The specific structure of the busbar component has been described in detail in the above embodiments and will not be repeated here.

[0066] In this embodiment, the battery module also includes a connector 900, which is disposed on one side of a plurality of battery cells 800. One end of the circuit board 300 extends beyond the base plate 100, and the portion of the circuit board 300 outside the base plate 100 is fixed to the connector 900 by riveting.

[0067] By adopting the above technical solution, the cover plate 600 can provide physical protection and structural support, preventing external environment from causing physical damage to components such as the base plate 100, circuit board 300, and electrical connector 400, such as dust, moisture, foreign object intrusion, and mechanical impact, thereby ensuring the safety and reliability of the battery module; the second positioning member 700 can position the cover plate 600 on the base plate 100, preventing positional deviation between the cover plate 600 and the base plate 100, thereby preventing the base plate 100 and electrical connector 400 from being unable to be protected due to installation position deviation of the cover plate 600, indirectly improving the service life of components such as the base plate 100, circuit board 300, and electrical connector 400.

[0068] Combination Figure 3 , Figure 4 and Figure 5 The second positioning element 700 includes multiple protrusions 710, all of which are connected to the cover plate 600. The base plate 100 and the positioning plate 200 are respectively provided with multiple recesses 110. The protrusions 710 are used to insert into or detach from the recesses 110 to position or detach from the positioning cover plate 600.

[0069] By adopting the above technical solution, when the cover plate 600 is moved toward the base plate 100, the protrusion 710 can engage with the concave hole 110, thereby positioning the cover plate 600 on the base plate 100. The arrangement of the protrusion 710 and the concave hole 110 results in a simple structure and indirectly improves the positioning accuracy of the cover plate 600.

[0070] In this embodiment, eight protrusions 710 are provided. Three protrusions 710 are provided on each of the two sides of the cover plate 600, and two protrusions 710 are provided in the middle of the cover plate 600. Eight recesses 110 are provided, and the eight recesses 110 correspond one-to-one with the eight protrusions 710. The cross-section of the protrusions 710 on the two sides of the cover plate 600 is circular, and the cross-section of the protrusions 710 in the middle of the cover plate 600 is rectangular. The recesses 110 on the two sides of the bottom plate 100 are fitted with the circular protrusions 710, and the recesses 110 in the middle of the bottom plate 100 are fitted with the rectangular protrusions 710.

[0071] In other embodiments, the shape and number of protrusions 710 and recesses 110 can be adaptively adjusted as needed, for example, by setting the cross-section of multiple protrusions 710 to be the same circle or rectangle.

[0072] In this embodiment, the protrusion 710 and the recess 110 are fitted with an interference fit. The interference between the protrusion 710 and the recess 110 is greater than or equal to 0.2 mm and less than or equal to 0.5 mm. The interference fit can achieve a tight connection between the protrusion 710 and the recess 110, providing high connection strength and stability. This fit method ensures that there is no gap between the protrusion 710 and the recess 110 by causing elastic deformation during assembly, thus preventing loosening and vibration.

[0073] Combination Figure 1 , Figure 4 and Figure 5 A marker 610 is provided on the side of the cover plate 600 away from the base plate 100. The marker 610 is used to locate the position of the foam on the cover plate 600.

[0074] In this embodiment, foam is provided on the side of the cover plate 600 away from the base plate 100. The foam has good elasticity and softness, which can absorb mechanical shock and vibration during the assembly of the battery module, thereby protecting the internal battery cells 800 and electronic components from damage. The foam can also fill the tiny gaps between the battery modules, play a sealing role, prevent dust, moisture and other impurities from entering the battery module, and ensure that the battery module can operate stably under various environmental conditions.

[0075] By adopting the above technical solution, the placement position of the foam can be determined by the guidance of the marking component 610, preventing assembly errors or functional failures caused by positional deviations. The presence of the marking component 610 can also reduce errors from manual operation, reduce the scrap rate in the production process, improve production efficiency and product quality consistency, ensure the stability and reliability of the battery module during use, and further optimize the overall performance and service life of the battery module.

[0076] In this embodiment, the marking element 610 includes four "L"-shaped protrusions, which are symmetrically distributed in pairs on both sides of the cover plate 600. The length of the "L"-shaped protrusions is greater than or equal to 20 mm and less than or equal to 50 mm, and the thickness of the protrusions is greater than or equal to 3 mm and less than or equal to 6 mm. By setting corresponding markings on the foam, the foam can be positioned. When positioning is achieved using a positioning device, the foam can also be positioned by identifying the position of the protrusions.

[0077] In other embodiments, the specific number of bumps can be adjusted as needed, for example, setting one, two, or three bumps.

[0078] This application also provides a battery pack, including a frame and a battery module of any of the above embodiments connected to the frame.

[0079] The specific structure of the battery module has been described in detail in the above embodiments, and will not be repeated here.

[0080] This application also provides a vehicle, including a vehicle body and a battery pack of the above embodiments connected to the vehicle body.

[0081] In the vehicle provided in this application, when the battery module needs to be assembled, the electrical connector 400 is placed in the groove 220, so that the positioning post 510 and the positioning hole 410 can position the electrical connector 400 in the groove 220. The circuit board 300 is placed in the positioning space 210, thereby positioning the circuit board 300 on the base plate 100. The circuit board 300 is electrically connected to the electrical connector 400 through the connecting groove 230. The cover plate 600 is placed on the base plate 100, so that the protrusion 710 and the notch are aligned with the position of the cover plate 600 on the base plate 100. Positioning improves the alignment accuracy between the circuit board 300 and the electrical connector 400, preventing problems such as poor contact and increased resistance caused by positional deviations of the circuit board 300 or the electrical connector 400. This indirectly improves the efficiency and stability of power transmission, simplifies the assembly process of the circuit board 300 and the electrical connector 400, reduces errors from manual operation, lowers rework and scrap rates in the production process, improves the production efficiency of the battery module, enhances the reliability and consistency of the battery module, and extends the service life of the battery module.

[0082] Finally, it should be noted that other embodiments of this utility model will readily occur to those skilled in the art upon consideration of the specification and practice of the utility model disclosed herein. This utility model is intended to cover any variations, uses, or adaptations of this utility model that follow the general principles of this utility model and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures 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 utility model is limited only by the appended claims.

Claims

1. A bus component, characterized in that, include: Base plate (100); Multiple positioning plates (200) are provided, each of which is connected to the base plate (100). The multiple positioning plates (200) are spaced apart, and a positioning space (210) is formed between adjacent positioning plates (200). A circuit board (300) is connected to the base plate (100), and the positioning space (210) is used to accommodate the circuit board (300), and the circuit board (300) abuts against the positioning plate (200).

2. The busbar assembly according to claim 1, characterized in that, It also includes a plurality of electrical connecting pieces (400), each of the positioning plates (200) having a plurality of grooves (220) for accommodating the electrical connecting pieces (400).

3. The busbar assembly according to claim 2, characterized in that, It also includes a plurality of first positioning elements (500), each of the grooves (220) is provided with a first positioning element (500), and the first positioning element (500) is used to position the electrical connecting piece (400) in the groove (220).

4. The busbar assembly according to claim 3, characterized in that, The first positioning member (500) includes a plurality of positioning posts (510), the positioning posts (510) are disposed in the groove (220), and the electrical connecting piece (400) is provided with a plurality of positioning holes (410). The positioning posts (510) are used to insert or disengage from the positioning holes (410) to position or disengage the electrical connecting piece (400).

5. The busbar assembly according to claim 2, characterized in that, The positioning plate (200) is provided with a plurality of connecting slots (230). One end of the connecting slot (230) is connected to the groove (220), and the other end of the connecting slot (230) is connected to the positioning space (210). The circuit board (300) is electrically connected to the electrical connecting piece (400) through the connecting slot (230).

6. A battery module, characterized in that, The battery module includes a busbar assembly according to any one of claims 1-5, wherein the battery module includes a cover plate (600) and a second positioning member (700), the cover plate (600) being connected to the base plate (100), the second positioning member (700) being connected to the cover plate (600), and the second positioning member (700) being used to position the cover plate (600) on the base plate (100).

7. The battery module according to claim 6, characterized in that, The second positioning member (700) includes a plurality of protrusions (710), all of which are connected to the cover plate (600). The base plate (100) and the positioning plate (200) are respectively provided with a plurality of recesses (110). The protrusions (710) are used to insert into or disengage from the recesses (110) to position or disengage the cover plate (600).

8. The battery module according to claim 6, characterized in that, A marker (610) is provided on the side of the cover plate (600) away from the base plate (100), and the marker (610) is used to locate the position of the foam on the cover plate (600).

9. A battery pack, characterized in that, The battery module includes a frame and a battery module according to any one of claims 6-8 connected to the frame.

10. A vehicle, characterized in that, The vehicle includes a vehicle body and a battery pack as described in claim 9 connected to the vehicle body.

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