Integrated busbar, battery module and battery pack

Abstract

The utility model relates to an integrated busbar, a battery module and a battery pack. The integrated busbar comprises a substrate, the substrate comprises a substrate body and a side wall, the side wall is arranged on at least one of two opposite edges of the substrate body and extends in the length direction of the substrate body, and a plurality of limiting bosses which are mutually spaced in the length direction are formed on the side wall; each limiting boss and the corresponding side wall define a limiting groove, and a buckle is arranged in each limiting groove. And a plurality of busbars, each of the busbars is inserted and constrained in the corresponding limiting groove, and each of the busbars is provided with a clamping hole which is in clamping fit with the corresponding buckle. According to the integrated busbar, the busbar can be conveniently assembled and disassembled, the processing technology is simplified, and the cost and the maintenance cost are remarkably reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to an integrated busbar, a battery module and a battery pack. Background Art

[0002] The integrated busbar (i.e. Cells Contract System, CCS for short) is an electrical connection structure for battery modules (i.e. Battery Module). It can connect multiple cells (i.e. Cells) in the battery module in series and parallel at high voltage to achieve centralized energy management. It can also collect key parameters such as battery temperature and voltage in real time, and form a communication connection with the battery management system (i.e. Battery Management System, BMS for short) through the connector to achieve intelligent control and management of the battery system.

[0003] At present, the integrated busbar generally includes components such as a substrate, a bus and a collection mechanism. Among them, the substrate is mostly made of resin material, and the busbar is mostly a metal part made of aluminum or copper. When connected, the busbar is usually fixed to the substrate by welding. For example, Chinese utility model patent CN218005167U discloses an integrated busbar, which includes a bracket with a fixing groove and a conductive busbar inserted into the fixing groove and welded to the fixing groove. Although the welding process can improve the reliability of the fixation between the busbar and the substrate, due to its complicated process, it is inconvenient to disassemble and assemble the busbar, which greatly increases the processing cost and maintenance cost of the integrated busbar.

[0004] Therefore, this field needs a new technical solution to solve the above problems. Utility Model Content

[0005] In order to solve or improve to a certain extent the technical problem of inconvenient assembly and disassembly of busbars in integrated busbars in the prior art, the utility model provides an integrated busbar. The integrated busbar comprises: a substrate, the substrate comprises a substrate body and a side wall arranged on at least one of the two opposite edges of the substrate body and extending along the length direction of the substrate body, a plurality of limiting bosses spaced from each other along the length direction are formed on the side wall, each of the limiting bosses and the side wall together form a limiting groove, and a buckle is provided in the limiting groove; and a plurality of busbars, each of the busbars is inserted and constrained in the corresponding limiting groove, and a clamping hole is provided on each of the busbars to form a clamping fit with the corresponding buckle.

[0006] It can be understood by those skilled in the art that the integrated busbar of the utility model includes a substrate and a plurality of busbars. Among them, the substrate includes a substrate body and a side wall arranged on at least one of the two opposite edges of the substrate body and extending along the length direction of the substrate body. A plurality of limiting protrusions spaced from each other along the length direction of the substrate body are formed on the side wall. Each limiting protrusion and the side wall together form a limiting groove for accommodating the busbar. A buckle is provided in each limiting groove, and a clamping hole matching the buckle is also provided on each busbar. When assembling the busbar, it is only necessary to insert the busbar into the corresponding limiting groove on the substrate, and insert the buckle in the limiting groove into the corresponding clamping hole on the busbar, so that the busbar can be firmly and stably fixed on the substrate. Accordingly, when disassembling the busbar, it is only necessary to separate the buckle from the clamping hole by external force, so that the busbar can be disassembled from the substrate for inspection, maintenance and replacement. Therefore, the integrated busbar of the utility model can conveniently disassemble and assemble the busbar, simplify the processing technology, and significantly reduce the cost and maintenance cost.

[0007] In the preferred technical solution of the integrated busbar, a central boss extending along the length direction is further provided on the substrate body, and the central boss and the side wall together form a wiring groove. The central boss can be conveniently matched with the side wall to form a wiring groove for accommodating the connecting wires, thereby improving the integration and compactness of the integrated busbar.

[0008] In the preferred technical solution of the integrated busbar, a plurality of support and positioning columns spaced apart from each other along the length direction are provided on the central boss. The provision of the support and positioning columns can facilitate the matching of the integrated busbar with other components (such as the module cover in the battery module and the battery pack cover in the battery pack), thereby improving the installation accuracy and structural stability.

[0009] In the preferred technical solution of the integrated busbar, the integrated busbar further comprises: a collection mechanism, the collection mechanism comprising a collection element correspondingly connected to each of the busbars, a connecting wire connected to the collection element and accommodated in the wiring trough, and a connector connected to the connecting wire. Through the above arrangement, the integrated busbar can have a real-time collection function, thereby providing data support for the intelligent control and management of the battery.

[0010] In the preferred technical solution of the above-mentioned integrated busbar, the collection element includes a pressure collection element and / or a temperature collection element, so as to accurately collect data such as the voltage and temperature of the battery cell.

[0011] In the preferred technical solution of the integrated busbar, a plurality of wire-gripping claws spaced apart from each other are provided on the central boss and / or the side wall. The provision of the wire-gripping claws can further constrain the connecting wires and prevent the connecting wires from slipping out of the wiring groove.

[0012] In the preferred technical solution of the integrated busbar, a plurality of explosion-proof valve avoidance holes spaced apart from each other along the length direction are provided on the central boss. The explosion-proof valve avoidance holes can avoid the explosion-proof valves in the battery cells, thereby improving safety.

[0013] In the preferred technical solution of the above-mentioned integrated busbar, the busbar is an aluminum bar treated with nickel plating, so that it has good electrical conductivity and oxidation resistance.

[0014] In the preferred technical solution of the integrated busbar, a support plate extending along the length direction is provided in at least part of the limiting groove, and each support plate is configured to support the corresponding busbar. The provision of the support plate can further improve the reliability and stability of the connection between the busbar and the substrate.

[0015] In the preferred technical solution of the integrated busbar, at least part of the limiting bosses are provided with module cover mounting holes, so that the base plate can be conveniently fixedly connected with the module cover in the battery module.

[0016] In order to solve or improve to a certain extent the technical problem of inconvenient assembly and disassembly of the busbar in the integrated busbar in the prior art, the utility model provides a battery module. The battery module comprises: a plurality of battery cells; an integrated busbar according to any one of the above, each busbar of the integrated busbar is electrically connected to the corresponding battery cell; and a module cover, the module cover being detachably fixed to the substrate of the integrated busbar.

[0017] In the preferred technical solution of the battery module, a plurality of positioning holes are provided on the module cover, and a support positioning column that can extend through the corresponding positioning holes is provided on the base plate. The cooperation between the positioning holes and the support positioning column can improve the installation accuracy and efficiency of the module cover.

[0018] In order to solve or improve to a certain extent the technical problem of inconvenient assembly and disassembly of the busbar in the integrated busbar in the prior art, the utility model provides a battery pack. The battery pack comprises: a plurality of battery modules according to any one of the above items; and a battery pack cover, the battery pack cover is fixedly connected to the substrate of the integrated busbar of each battery module.

[0019] In the preferred technical solution of the above battery pack, the battery module includes a module cover plate with a plurality of positioning holes, and a support positioning column is provided on the base plate, which can extend through the corresponding positioning holes and support the upper cover of the battery pack. Through the above arrangement, not only the installation accuracy and installation efficiency of the module cover can be improved, but also the support positioning column can be used to stably support the upper cover of the battery pack, thereby improving the stability of the entire battery pack structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0021] Figure 1 It is a front structural schematic diagram of an embodiment of the integrated busbar of the utility model;

[0022] Figure 2 yes Figure 1 The partial enlarged view of part A of the embodiment of the integrated busbar of the utility model is shown;

[0023] Figure 3 This is a schematic diagram of the back structure of an embodiment of the integrated busbar of the utility model;

[0024] Figure 4 yes Figure 3 The enlarged partial view of part B of the embodiment of the integrated busbar of the utility model is shown;

[0025] Figure 5 It is a structural schematic diagram of an embodiment of a substrate in an integrated busbar of the utility model;

[0026] Figure 6 It is a partial enlarged view of an embodiment of the substrate in the integrated busbar of the utility model.

[0027] List of reference numerals:

[0028] 1. Integrated busbar; 10. Base plate; 11. Base plate body; 12. Side wall; 12a. First side wall; 12b. Second side wall; 121. Opening; 13. Limiting boss; 13a. First limiting boss; 13b. Second limiting boss; 131. Module cover mounting hole; 14. Limiting groove; 14a. First limiting groove; 14b. Second limiting groove; 15. Buckle; 16. Support plate; 17. Center boss; 171. Explosion-proof valve avoidance hole; 172. Support positioning column; 18. Wiring groove; 181. Wire clamping claw; 19. Battery pack cover mounting hole; 20. Bus; 20a. Positive bus; 20b. Negative bus; 20c. Series bus; 21. Clamping hole; 30. Collection mechanism; 31. Collection element; 32. Connecting wire; 33. Connector. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0030] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "front", "back", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0031] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "setting", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal connection of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In order to solve or improve to a certain extent the technical problem of inconvenient assembly and disassembly of busbars in the integrated busbars in the prior art, the utility model provides an integrated busbar 1. The integrated busbar 1 comprises: a substrate 10, the substrate 10 comprises a substrate body 11 and a side wall 12 arranged on at least one of the two opposite edges of the substrate body 11 and extending along the length direction of the substrate body 11, a plurality of limiting bosses 13 spaced from each other along the length direction are formed on the side wall 12, each limiting boss 13 and the side wall 12 together enclose a limiting groove 14, and a buckle 15 is provided in the limiting groove 14; and a plurality of busbars 20, each busbar 20 is inserted and constrained in the corresponding limiting groove 14, and a clamping hole 21 is provided on each busbar 20 to form a clamping fit with the corresponding buckle 15.

[0033] like Figure 1-Figure 4 As shown, in one or more embodiments, the integrated busbar 1 of the utility model includes a substrate 10, a plurality of busbars 20 and a collection mechanism 30. Each busbar 20 is detachably fixed on the substrate 10 to improve the efficiency of disassembly and assembly of the busbar 20. The collection mechanism 30 is arranged on the substrate 10 to enrich the functions of the integrated busbar 1.

[0034] like Figure 1-Figure 6 As shown, the substrate 10 includes a substantially rectangular substrate body 11. The substrate body 11 can be made of a suitable resin material (such as PC, ABS, etc.) through an injection molding process, so that it has good mechanical strength and insulation performance. Figure 1 In the orientation shown, the substrate body 11 has two edges opposite to each other in the front-to-back direction. In one or more embodiments, a longitudinal direction (based on the length of the substrate body 11) is formed on each edge. Figure 1The side wall 12 extends in the direction shown, i.e., the left-right direction). The side wall 12 is configured to extend vertically upward from the upper surface of the substrate body 11. Specifically, a first side wall 12a is formed at the front edge of the substrate body 11, and a second side wall 12b is formed at the rear edge of the substrate body 11. Alternatively, the side wall 12 may also be provided only on the front edge of the substrate body 11, or only on the rear edge of the substrate body 11. In one or more embodiments, a plurality of openings 121 spaced apart from each other are provided on the side wall 12. Each opening 121 allows the connecting wire 32 of the acquisition mechanism 30 to pass therethrough for easy wiring.

[0035] Continue to see Figure 1-Figure 6In one or more embodiments, seven limiting bosses 13 are formed on each side wall 12 and are spaced apart from each other along the length direction of the substrate body 11. Each limiting boss 13 is configured to extend from the corresponding side wall 12 approximately vertically toward a direction away from the side wall 12. Each limiting boss 13 and the side wall 12 together form a limiting groove 14 for accommodating the bus 20. Specifically, six first limiting bosses 13a and one second limiting boss 13b are formed on the first side wall 12a, which are spaced apart from left to right. Both the left and right sides of the first limiting boss 13a can cooperate with the first side wall 12a to form the limiting groove 14, while only one side (for example, the left side) of the second limiting boss 13b can cooperate with the first side wall 12a to form the limiting groove 14. The first limiting boss 13a located at the leftmost side of the first side wall 12a forms a second limiting groove 14b with an opening 121 facing the left front together with the first side wall 12a, so as to receive the negative busbar 20b in the busbar 20. The other first limiting bosses 13a located on the first side wall 12a can be matched with the adjacent limiting protrusions (including the first limiting boss 13a and the second limiting boss 13b), and together with the first side wall 12a located therebetween, form a first limiting groove 14a with an opening 121 facing forward, so as to receive the series busbar 20c in the busbar 20. Accordingly, one second limiting boss 13b and six first limiting bosses 13a are formed on the second side wall 12b, which are spaced sequentially from left to right. The first limiting boss 13a located on the rightmost side of the second side wall 12b forms a second limiting groove 14b with an opening 121 facing the right rear together with the second side wall 12b to receive the positive bus 20a in the bus 20. The other first limiting bosses 13a located on the second side wall 12b can be matched with the adjacent limiting protrusions, and together with the second side wall 12b located between the two, form a first limiting groove 14a with an opening 121 facing backward to receive the series bus 20c. Through the above-mentioned arrangement, the bus 20 can be arranged on both the left and right sides of the substrate body 11 to improve the integration and compactness of the integrated busbar 1. Alternatively, the number of the limiting bosses 13 on each side wall 12 can also be set to other suitable numbers more or less than 7, such as 6, 8, etc. Further, the limiting boss 13 can also be arranged only on the first side wall 12a or only on the second side wall 12b.

[0036] Continue to see Figure 1 , Figure 2 , Figure 5 and Figure 6In one or more embodiments, each first limiting boss 13a is provided with a module cover mounting hole 131. The module cover mounting hole 131 can be matched with a suitable fastener (such as a rivet, a screw, etc.) to form a fixed connection between the integrated busbar 1 and the module cover (not shown in the figure) of the battery module. Alternatively, the module cover mounting hole 131 can also be provided on part of the first limiting boss 13a or arranged on the second limiting boss 13b.

[0037] Continue to see Figure 1 , Figure 2 , Figure 5 and Figure 6 In one or more embodiments, a buckle 15 is provided in each limiting groove 14 to form a snap fit with the corresponding bus 20. Each buckle 15 is configured to extend approximately vertically from the corresponding side wall 12 toward a direction away from the side wall 12. Taking the first side wall 12a as an example, each buckle 15 extends approximately vertically forward from the first side wall 12a. In one or more embodiments, two buckles 15 spaced apart from each other along the length direction of the substrate body 11 are provided in each first limiting groove 14a to more stably fix the series bus 20c; and one buckle 15 is provided in the second limiting groove 14b to match the corresponding positive bus 20a or negative bus 20b. Alternatively, the number of buckles 15 in each limiting groove 14 can also be adjusted according to actual needs.

[0038] Continue to see Figure 3-Figure 6 In one or more embodiments, a support plate 16 is also provided in each first limiting groove 14a to support the corresponding series bus 20c. Taking the first side wall 12a as an example, each support plate 16 is configured to extend forward approximately vertically from the first side wall 12a. The support plate 16 has a substantially rectangular shape with rounded corners. Alternatively, the support plate 16 may also be provided in a square or other suitable shape. In the assembled state, the series bus can be placed approximately horizontally on the support plate 16 to further improve the reliability and stability of its installation. Alternatively, the support plate 16 may also be provided in the second limiting groove 14b to support the corresponding positive bus 20a or negative bus 20b. Alternatively, the number of support plates 16 in each limiting groove 14 may also be provided in a plurality, such as 2, 3, etc.

[0039] like Figure 1 , Figure 2 , Figure 5 and Figure 6As shown, in one or more embodiments, a central boss 17 extending along the length direction of the substrate body 11 is provided in the middle of the substrate body 11. The central boss 17 is configured to extend vertically upward from the upper surface of the substrate body 11. The central boss 17 and the side wall 12 together form a hollow wiring groove 18 to accommodate the connecting wire 32 in the collection mechanism 30. In one or more embodiments, a plurality of wire clamping claws 181 spaced apart from each other are provided on the central boss 17 and the side wall 12 to more firmly constrain the connecting wire 32. Alternatively, the wire clamping claws 181 may also be arranged only on the central boss 17 or only on the side wall 12. In addition, the number of wire clamping claws 181 can be adjusted according to actual needs.

[0040] Continue to see Figure 1 , Figure 2 , Figure 5 and Figure 6 In one or more embodiments, 13 explosion-proof valve avoidance holes 171 spaced apart from each other along the length direction of the substrate body 11 are provided on the central boss 17. Each explosion-proof valve avoidance hole 171 can be matched with a corresponding battery cell (not shown in the figure) in the battery module, so that the explosion-proof valve of the battery cell passes through it. In this way, when the explosion-proof valve of the battery cell is triggered, the pressure inside the battery can be smoothly released through the explosion-proof valve avoidance hole 171, thereby ensuring the safety of the battery module. Alternatively, the number of explosion-proof valve avoidance holes 171 can also be set to other suitable numbers more or less than 13, such as 12, 14, etc.

[0041] Continue to see Figure 1 , Figure 2 , Figure 5 and Figure 6 In one or more embodiments, two support positioning columns 172 spaced apart from each other along the length direction of the substrate body 11 are further provided on the central boss 17, so as to facilitate the integration of the busbar 1 and other components (such as the module cover in the battery module and the battery pack cover in the battery pack, etc.), thereby improving the installation accuracy and structural stability of the components. Each support positioning column 172 is configured to extend vertically upward from the upper surface of the central boss 17. The support positioning column 172 has a generally cylindrical shape. Alternatively, the support positioning column 172 may also be set to other suitable shapes. Alternatively, the number of support positioning columns 172 may also be set to other suitable numbers more or less than 2, such as 1, 3, etc.

[0042] like Figure 1 , Figure 5 and Figure 6As shown, in one or more embodiments, two battery pack cover mounting holes 19 spaced apart from each other in the front-to-back direction are provided at the left and right ends of the substrate body 11. Each battery pack cover mounting hole 19 can be matched with a suitable fastener (such as a rivet, a screw, etc.) to form a fixed connection between the substrate 10 and the battery pack cover of the battery pack. It should be noted that the number and arrangement position of the battery pack cover mounting holes 19 can also be adjusted according to actual needs.

[0043] like Figure 1-Figure 4 As shown, a plurality of busbars 20 are arranged on the substrate 10 at intervals. In one or more embodiments, each busbar 20 is an aluminum bar treated with nickel plating to ensure its conductivity and oxidation resistance. Alternatively, the busbar 20 can also be made of other suitable materials, such as copper. In one or more embodiments, the plurality of busbars 20 include 1 negative busbar 20b, 1 positive busbar 20a and 12 series busbars 20c. Based on Figure 1 In the orientation shown, the negative busbar 20b is arranged on the leftmost side of the first side wall 12a, the positive busbar 20a is arranged on the rightmost side of the second side wall 12b, and the remaining series busbars 20c are arranged alternately on the first side wall 12a and the second side wall 12b. More specifically, the negative busbar 20b is inserted into the second limiting groove 14b of the first side wall 12a, and the positive busbar 20a is inserted into the second limiting groove 14b of the second side wall 12b. A clamping hole 21 is provided on each of the negative busbar 20b and the positive busbar 20a. In the assembled state, the clamping holes 21 in the negative busbar 20b and the positive busbar 20a respectively form a clamping fit with the buckle 15 in the corresponding second limiting groove 14b. Each series busbar 20c is inserted into the first limiting groove 14a corresponding to the first side wall 12a or the second side wall 12b. Two clamping holes 21 spaced from each other in the left-right direction are also provided on each series busbar 20c. In the assembled state, the clamping holes 21 on each series busbar 20c can form a clamping fit with the buckle 15 in the corresponding first limiting groove 14a, so as to firmly and stably fix the series busbar 20c. In addition, each series busbar 20c can also be horizontally abutted against the support plate 16 in the corresponding first limiting groove 14a to further improve the reliability of installation. Alternatively, the number and arrangement of the busbars 20 can also be adjusted according to actual needs.

[0044] like Figure 1 and Figure 2As shown, the collection mechanism 30 includes a collection element 31, a connecting line 32 and a connector 33. Among them, the collection element 31 is connected to each corresponding bus 20 respectively. The collection element 31 can be but not limited to a pressure collection element or a temperature collection element. The collection element 31 can be fixedly connected to the bus 20 by ultrasonic welding or other suitable methods to ensure the reliability of fixation. The connecting line 32 is connected to the collection element 31 and the connector 33 respectively so as to transmit the voltage or temperature data collected by the collection element 31 to the connector 33. The connecting line 32 is inserted into the wiring groove 18 of the substrate body 11 to improve the aesthetics and reliability of the wiring and prevent the connecting line 32 from slipping out of the wiring groove 18. In addition, the connecting line 32 can also be further limited by the clamping claw 181 arranged above the wiring groove 18. The connector 33 can form a communication connection with the battery management system (not shown in the figure) of the battery module so as to transmit the acquired data to the battery management system to realize intelligent management and control.

[0045] The utility model provides a battery module (not shown in the figure). The battery module includes a plurality of battery cells, an integrated busbar 1 as described in any of the above embodiments, and a module cover. Each busbar 20 on the integrated busbar 1 is electrically connected to the corresponding battery cell. The module cover is detachably fixed to the substrate 10 of the integrated busbar 1. In one or more embodiments, a plurality of positioning holes (not shown in the figure) are provided on the module cover, and a support positioning column 172 that can extend through the corresponding positioning holes is provided on the substrate 10 to improve the installation accuracy and installation efficiency of the module cover.

[0046] The utility model also provides a battery pack (not shown in the figure). The battery pack includes a plurality of battery modules and a battery pack cover as described in any of the above embodiments. The battery pack cover is fixedly connected to the substrate 10 of the integrated busbar 1 of each battery module. In one or more embodiments, the battery module includes a module cover having a plurality of positioning holes, and a support positioning column 172 is provided on the substrate 10, which can extend through the corresponding positioning holes and support the battery pack cover, so as to improve the installation accuracy and efficiency of the module cover, and at the same time improve the structural stability of the entire battery pack.

[0047] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. An integrated busbar, characterized in that: The integrated busbar comprises: A substrate, the substrate comprising a substrate body and a side wall arranged on at least one of two opposite edges of the substrate body and extending along the length direction of the substrate body, a plurality of limiting bosses spaced from each other along the length direction are formed on the side wall, each limiting boss and the side wall together form a limiting groove, and a buckle is provided in the limiting groove; and A plurality of busbars are provided, each of which is inserted into and constrained in a corresponding limiting groove, and each of which is provided with a clamping hole for clamping with a corresponding buckle.

2. The integrated busbar according to claim 1, characterized in that: A central boss extending along the length direction is also provided on the substrate body, and the central boss and the side walls together form a wiring groove.

3. The integrated busbar according to claim 2, characterized in that: A plurality of supporting and positioning columns spaced apart from each other along the length direction are provided on the central boss; and / or The integrated busbar further comprises: a collection mechanism, which comprises a collection element correspondingly connected to each of the busbars, a connecting line connected to the collection element and accommodated in the wiring trough, and a connector connected to the connecting line.

4. The integrated busbar according to claim 3, characterized in that: The collecting element comprises a pressure collecting element and / or a temperature collecting element; and / or The collecting element is connected to the busbar by ultrasonic welding process.

5. The integrated busbar according to claim 2, characterized in that: A plurality of wire clamping claws spaced apart from each other are provided on the central boss and / or the side wall; and / or A plurality of explosion-proof valve avoidance holes spaced apart from each other along the length direction are provided on the central boss.

6. The integrated busbar according to claim 1, characterized in that: The busbar is an aluminum bar plated with nickel; and / or A support plate extending along the length direction is provided in at least part of the limiting groove, and each of the support plates is configured to support the corresponding bus bar; and / or A module cover mounting hole is provided on at least part of the limiting boss.

7. A battery module, characterized in that: The battery module comprises: Multiple cells; The integrated busbar according to any one of claims 1 to 6, wherein each busbar of the integrated busbar is electrically connected to the corresponding battery cell; and A module cover plate is detachably fixed on a substrate of the integrated busbar.

8. The battery module according to claim 7, characterized in that: A plurality of positioning holes are arranged on the module cover plate, and a supporting positioning column which can extend through the corresponding positioning holes is arranged on the base plate.

9. A battery pack, characterized in that: The battery pack comprises: A plurality of battery modules according to claim 7 or 8; and A battery pack upper cover is fixedly connected to a substrate of an integrated busbar of each battery module.

10. The battery pack according to claim 9, characterized in that: The battery module comprises a module cover plate with a plurality of positioning holes, and the base plate is provided with supporting positioning columns which can extend through the corresponding positioning holes and support the upper cover of the battery pack.

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