Output pole base and battery module

Abstract

The utility model discloses an output pole base and battery module belong to battery technical field. The output pole base includes: base structure and connecting structure, connecting structure movable installation is in the base structure, and connecting structure can be along target direction relative to base structure removal, and base structure has first cooperation piece, and connecting structure has second cooperation piece, and second cooperation piece is used for when connecting structure removal to with the position of connecting with the busbar and first cooperation piece snap connection. Through setting the output pole base of self height adjustable, make the output pole base can nimble adaptation different structure's battery module and different use environment under the electrical clearance, can compensate the influence of air dielectric strength drop under high altitude environment, avoid the busbar and the end plate between in different use environment under electric breakdown. Meanwhile, the output pole base of self height adjustable can overcome the cumulative tolerance in manufacturing and assembly to the reliability of the battery module of using this output pole base is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to an output electrode base and a battery module. Background Technology

[0002] With the development of battery technology, the power lithium battery industry has grown rapidly, and its applications have expanded to fields such as road vehicles, construction machinery, and energy storage, leading to increasingly higher requirements for battery quality. Currently, as the core power source for new energy vehicles, the battery pack typically contains battery modules with end plates and output electrode bases.

[0003] The end plate is located at the end of the battery module to resist the expansion force of the battery cell; the output electrode base is located at the output end of the battery module and is fixed on the end plate. The output electrode base is connected to the output electrode connecting piece through a built-in metal insert and undertakes the function of insulation protection.

[0004] However, with the increasing demand for output electrode protection bases in the fields of highway vehicles, construction machinery and energy storage, the above-mentioned output electrode bases have low applicability and cannot meet the usage requirements of different altitude environments. Utility Model Content

[0005] This utility model embodiment provides an output electrode base and a battery module. The technical solution is as follows: According to one aspect of the present invention, an output electrode base is provided, the output electrode base comprising: Base structure and connection structure; The base structure is used to connect the end plate, and the base structure has a first mating component; The connecting structure is movably mounted on the base structure and is movable relative to the base structure along a target direction. The connecting structure is used to connect a busbar and has a second mating member for engaging with the first mating member when the connecting structure moves to a position connected to the busbar.

[0006] Optionally, the first mating component includes a limiting plate, the limiting plate having a plurality of limiting slots arranged along the target direction; The second mating component includes a support buckle. When the connecting structure moves along the target direction, the support buckle is located outside the limiting slot. When the connecting structure moves to the position connected to the busbar, the end of the support buckle extends into one of the multiple limiting slots.

[0007] Optionally, the connection structure includes a connection body and a plurality of support buckles, the ends of which are fixedly connected to the side of the connection body near the base structure; The base structure includes a base body and a plurality of limiting plates fixed on the base body, wherein the plurality of limiting plates are engaged with the plurality of support buckles in a one-to-one correspondence.

[0008] Optionally, the ends of the plurality of limiting plates are all fixedly connected to the side of the base body opposite to the connecting body; The base body has an assembly through hole, and the support buckle passes through the assembly through hole and engages with the limiting plate.

[0009] Optionally, the plurality of support buckles are divided into an inner buckle group and an outer buckle group, each of which has a plurality of support buckles, and the outer buckle group is located outside the inner buckle group; The plurality of limiting plates are divided into an inner plate group and an outer plate group. Both the inner plate group and the outer plate group have a plurality of the limiting plates, and the outer plate group is located outside the inner plate group.

[0010] Optionally, the support buckle includes a support plate and a latch, one end of the support plate is fixedly connected to the connecting body, and the other end of the support plate is fixedly connected to the latch.

[0011] Optionally, the base structure further includes a guide post, the end of which is fixedly connected to the side of the base body near the connecting body; The connecting body has a guide hole, and the guide post passes through the guide hole.

[0012] Optionally, the limiting slot includes a limiting through hole that penetrates the limiting plate along its thickness direction.

[0013] According to another aspect of the present invention, a battery module is provided, the battery module comprising: a cell assembly, an end plate, a busbar, and an output electrode base; The end plate is located on one side of the cell assembly, and the end plate has a mounting groove; The output electrode base is assembled in the mounting slot, and the output electrode base includes the aforementioned output electrode base. The busbar is connected to the battery cell assembly and is fixed to the output electrode base.

[0014] Optionally, the mounting groove of the end plate has a positioning groove on its groove wall; The base structure of the output electrode base has a positioning hook, which is engaged in the positioning groove.

[0015] The beneficial effects of the technical solution provided by this utility model embodiment include at least the following: An output electrode base including a base structure and a connecting structure is provided. The connecting structure is movably mounted on the base structure and is movable relative to the base structure along a target direction. The base structure has a first mating member; the connecting structure has a second mating member, which engages with the first mating member when the connecting structure moves to a position connecting with a busbar. By providing an output electrode base with adjustable height, it can flexibly adapt to battery modules with different structures and electrical clearances under different operating environments. This can compensate for the impact of reduced air dielectric strength at high altitudes and prevent electrical breakdown between the busbar and the end plate under different operating environments. Simultaneously, the height-adjustable output electrode base can overcome accumulated tolerances in manufacturing and assembly, improve the consistency of product safety clearances, and thus enhance the reliability of battery modules using this output electrode base.

[0016] Furthermore, by designing an output electrode base with adjustable height, the cost of redeveloping molds for new projects can be avoided. At the same time, the types of materials for parts can be reduced, and the difficulty of product storage and transportation can be simplified, thereby reducing the manufacturing cost of the output electrode base and achieving cost reduction and efficiency improvement throughout the entire process. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a battery module provided in an embodiment of this utility model; Figure 2 This is a schematic diagram of the structure of an output electrode base provided in an embodiment of this utility model; Figure 3 yes Figure 2 The diagram shows an exploded view of the output electrode base. Figure 4 yes Figure 1 A schematic diagram of a cross-sectional structure of the battery module shown; Figure 5 yes Figure 2 A schematic diagram showing one assembly direction of the output electrode base; Figure 6 yes Figure 2 A schematic diagram showing another mounting height for the output electrode base; Figure 7yes Figure 2 A schematic diagram showing another mounting height for the output electrode base; Figure 8 yes Figure 2 Another exploded view of the output electrode base shown; Figure 9 yes Figure 2 A schematic diagram of the output electrode base from another orientation is shown; Figure 10 yes Figure 2 The diagram shows a cross-sectional structure of the output electrode base; Figure 11 yes Figure 1 The diagram shows an exploded view of a portion of the battery module.

[0019] Explanation of reference numerals in the attached figures: Output electrode base 10; base structure 11, first mating part 110, limiting plate 111, limiting slot c1, base body 112, assembly through hole k1, inner layer plate assembly 11a, outer layer plate assembly 11b, guide post 113, positioning hook 114; connecting structure 12, second mating part 120, support buckle 121, support plate 1211, buckle tongue 1212, connecting body 122, inner layer buckle assembly 12a, outer layer buckle assembly 12b, guide through hole k2; end plate 20, mounting groove c2, positioning groove c3; busbar 30, busbar component 31, output electrode connecting piece 32; cell assembly 40. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0021] Although the present invention can be readily embodied in various forms, only some specific embodiments are shown in the accompanying drawings and will be described in detail in this specification. It is understood that this specification should be regarded as an exemplary illustration of the principles of the present invention and is not intended to limit the present invention to what is described herein.

[0022] Therefore, a feature pointed out in this specification is used to describe one feature of one embodiment of the present invention, and does not imply that every embodiment of the present invention must have the described feature. Furthermore, it should be noted that this specification describes many features. Although certain features may be combined to illustrate possible system designs, these features may also be used in other combinations not explicitly stated. Therefore, unless otherwise stated, the described combinations are not intended to be limiting.

[0023] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of the various elements of this invention are relative rather than absolute. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the descriptions of the positions of these elements change, these directional indications also change accordingly.

[0024] The output terminal base in a battery module is usually fixedly mounted on an end plate. The busbar may include a busbar component and an output terminal connector. The busbar component can connect to the cell assembly in the battery module. The output terminal connector is connected to the busbar component and fixed to the output terminal base.

[0025] The electrical safety clearance between the end plate and the busbar is an important safety parameter in the structural design of the battery module. Its core purpose is to maintain sufficient space between the two (or between them and ground) to prevent electrical breakdown or leakage current under high voltage, and to ensure the electrical insulation integrity of the system.

[0026] The electrical safety clearance between the end plate and the busbar is typically related to the system's maximum voltage, altitude, environmental pollution level, insulation material performance, and domestic and international safety standards (such as GB / T 16935.1). For example, the higher the system's maximum operating voltage, the larger the required electrical safety clearance. In high-altitude areas, the thin air reduces dielectric strength, necessitating an increased electrical safety clearance to compensate for the battery module's safety.

[0027] In related technologies, when battery modules are composed of different voltage platforms, have different altitudes in the usage environment, different pollution levels, or different end plate heights, different electrical safety clearances need to be designed between the end plate and the busbar in the battery module. However, the aforementioned output electrode base located between the end plate and the busbar has low applicability and cannot meet the usage requirements of different altitude environments. Therefore, when producing battery modules, it is usually necessary to produce multiple output electrode bases to cope with different usage scenarios. This results in a large production cost for the output electrode bases, and multiple mold openings for production can easily lead to resource waste.

[0028] This utility model provides an output electrode base and a battery module, which can solve some or all of the technical problems in the above-mentioned related technologies.

[0029] Please refer to Figure 1 , Figure 2 and Figure 3 , Figure 1 This is a schematic diagram of the structure of a battery module provided in an embodiment of this utility model. Figure 2 This is a schematic diagram of the structure of an output electrode base 10 provided in an embodiment of the present invention. Figure 3 yes Figure 2 The diagram shows an exploded view of the output electrode base 10. Figure 4 yes Figure 1 The diagram shows a cross-sectional structure of a battery module. Figure 5 yes Figure 2 The diagram shows an assembly direction of the output electrode base 10. The output electrode base 10 may include a base structure 11 and a connecting structure 12. The connecting structure 12 may be located above the base structure 11. The base structure 11 may be used to connect the end plate 20, and the connecting structure 12 may be used to connect the busbar 30. For example, the busbar 30 may include a busbar component 31 and an output electrode connecting piece 32. The busbar component 31 may be connected to the cell assembly 40 in the battery module, and the output electrode connecting piece 32 is connected to the busbar component 31 and fixed to the output electrode base 10.

[0030] The connecting structure 12 is movably mounted on the base structure 11, and the connecting structure 12 is movable relative to the base structure 11 along the target direction.

[0031] For example, the target direction can be a direction parallel to the arrangement direction of the output electrode base 10 and the output electrode connecting piece 32. By movably connecting the connecting structure 12 and the base structure 11, the connecting structure 12 can be slid relative to the base structure 11, thereby realizing the extension and retraction of the output electrode base 10 in the target direction, and thus adjusting the height of the output electrode base 10.

[0032] The base structure 11 has a first mating member 110; the connecting structure 12 has a second mating member 120, which engages with the first mating member 110 when the connecting structure 12 moves to a position connected to the busbar 30. The connecting structure 12 can slide relative to the base structure 11 in multiple positions along a target direction. When the connecting structure 12 slides to any position along the target direction, the second mating member 120 in the connecting structure 12 can engage with the first mating member 110 to lock the connecting structure 12 in the current position.

[0033] By engaging the first mating part 110 and the second mating part 120, the connecting structure 12 and the base structure 11 can be locked in a designated position, preventing the connecting structure 12 from moving relative to the base structure 11 after it has slid to the designated position, thus improving the stability of the output pole base 10.

[0034] Please continue to refer to this. Figure 6 and Figure 7 , Figure 6 yes Figure 2 The diagram shows another assembly height of the output electrode base 10. Figure 7 yes Figure 2 The diagram shows another assembly height of the output electrode base 10, in which... Figure 1The mounting height of the output electrode base 10 shown can be adapted to a distance of 15.7 mm between the end plate 20 and the busbar 30. Figure 6 The mounting height of the output electrode base 10 shown is suitable for a distance of 19.5mm between the end plate 20 and the busbar 30. Figure 7 The mounting height of the output base 10 shown can be adapted to a distance of 23.3 mm between the end plate 20 and the busbar 30. Figure 4 The distance between the end plate 20 and the busbar 30 shown is 15.7 mm. It can be seen that... Figure 1 The output terminal base 10 shown is adapted to Figure 4 The battery module shown. In an exemplary embodiment, when the usage environment of the battery module changes from a low-altitude area to a high-altitude area, it is necessary to increase the electrical clearance between the busbar 30 and the end plate 20 in the battery module, that is, it is necessary to increase the electrical clearance between the output electrode connection piece 32 and the end plate 20 in the battery module. In this case, if the output electrode base 10 is used in a low-altitude area, there is also a gap between the output electrode base 10 and the output electrode connection piece 32 mounted on the end plate 20 after the electrical clearance adjustment, which causes the output electrode base 10 and the output electrode connection piece 32 to be unable to connect. In this embodiment of the present invention, the connecting structure 12 of the output electrode base 10 can slide relative to the base structure 11 in a direction away from the base structure 11, so as to increase the overall height of the output electrode base 10, thereby enabling the output electrode base 10 to connect with the output electrode connection piece 32, and thus making the height of the output electrode base 10 adapt to the end plate 20 and the output electrode connection piece 32 after the electrical clearance adjustment. For example, Figure 2 The assembly height of the output terminal base 10 is adjusted to Figure 6 or Figure 7 The assembly height of the output electrode base 10 is adjusted. This improves the applicability of the output electrode base 10, enabling it to meet the needs of different system maximum operating voltages or different altitude environments. It eliminates the need to manufacture new output electrode bases 10 using molds, reducing production costs and minimizing resource waste.

[0035] The output electrode base 10 in this embodiment of the invention, with its adjustable height, can flexibly adapt to battery modules with different structures and electrical clearances under different operating environments. It can meet the requirements of high-voltage platforms for greater insulation distances and compensate for the decrease in air dielectric strength at high altitudes, preventing electrical breakdown between the busbar 30 and the end plate 20 under different operating conditions. Simultaneously, the height-adjustable output electrode base 10 can overcome accumulated tolerances in manufacturing and assembly, improving the consistency of product safety clearances, thereby enhancing the reliability of battery modules using this output electrode base 10.

[0036] In summary, this utility model embodiment provides an output electrode base 10 including a base structure 11 and a connecting structure 12. The connecting structure 12 is movably mounted on the base structure 11 and can move relative to the base structure 11 along a target direction. The base structure 11 has a first mating member 110; the connecting structure 12 has a second mating member 120, which engages with the first mating member 110 when the connecting structure 12 moves to a position connected to the busbar 30. By providing an output electrode base 10 with adjustable height, it can flexibly adapt to battery modules with different structures and electrical clearances under different operating environments. It can compensate for the impact of reduced air dielectric strength at high altitudes and prevent electrical breakdown between the busbar 30 and the end plate 20 under different operating environments. Simultaneously, the height-adjustable output electrode base 10 can overcome accumulated tolerances in manufacturing and assembly, improve the consistency of product safety clearances, and thus enhance the reliability of battery modules using this output electrode base 10.

[0037] Furthermore, by designing an output electrode base 10 with adjustable height, the cost of redeveloping molds for new projects can be avoided. At the same time, the types of materials for parts can be reduced, and the difficulty of product storage and transportation can be simplified, thereby reducing the manufacturing cost of the output electrode base 10 and achieving cost reduction and efficiency improvement throughout the entire process.

[0038] Please refer to Figure 2 and Figure 3 In one optional embodiment, the first mating member 110 may include a limiting plate 111 having a plurality of limiting slots c1 arranged along the target direction; the second mating member 120 includes a support buckle 121, which is located outside the limiting slots c1 when the connecting structure 12 moves along the target direction, and extends into one of the limiting slots c1 when the connecting structure 12 moves to the position connected to the busbar 30.

[0039] For example, the number of limiting slots c1 on the limiting plate 111 can be 2, 3, 4 or more, and this embodiment of the utility model does not limit this.

[0040] Furthermore, since multiple limiting slots c1 can be arranged along the target direction, by engaging the support buckle 121 into one of the multiple limiting slots c1, the relative travel distance of the connecting structure 12 and the base structure 11 can be accurately controlled, thereby accurately controlling the extension and retraction of the output pole base 10, and thus accurately adapting to the gap between the end plate 20 and the busbar 30.

[0041] Please refer to Figure 8 , Figure 8 yes Figure 2The diagram shows another exploded view of the output electrode base 10. In an optional embodiment, the connecting structure 12 may include a connecting body 122 and multiple support clips 121. The ends of the multiple support clips 121 are all fixedly connected to the side of the connecting body 122 near the base structure 11. A metal insert may be built into the connecting body 122, thereby electrically connecting it to the output electrode connecting piece 32 in the busbar 30. The multiple support clips 121 may be welded to the connecting body 122, or the multiple support clips 121 may be an integral structure with the connecting body 122. The base structure 11 may include a base body 112 and multiple limiting plates 111 fixed to the base body. The multiple limiting plates 111 are correspondingly engaged with the multiple support clips 121. The multiple limiting plates 111 may be welded to the base body 112, or the multiple limiting plates 111 may be an integral structure with the base body 112.

[0042] In one optional embodiment, the ends of multiple limiting plates 111 are fixedly connected to the side of the base body 112 opposite to the connecting body 122. The base body 112 has an assembly through hole k1, and the support buckle 121 passes through the assembly through hole k1 and engages with the limiting plate 111. The base body 112 can be a plate-shaped structure. Since the limiting plate 111 is located on the side of the base body 112 opposite to the connecting body 122, during the assembly of the connecting structure 12 and the base structure 11, the multiple support buckles 121 need to pass through the assembly through hole k1 first and then engage with the limiting plate 111. In this way, the connecting structure 12 can be assembled and limited through the assembly through hole k1, so that the support buckle 121 can engage with the limiting plate 111 more smoothly.

[0043] Please refer to Figure 9 , Figure 9 yes Figure 2 The schematic diagram of another orientation of the output electrode base 10 shown illustrates an optional embodiment where multiple support latches 121 are divided into an inner latch group 12a and an outer latch group 12b. Both the inner latch group 12a and the outer latch group 12b have multiple support latches 121, with the outer latch group 12b located outside the inner latch group 12a. Multiple limiting plates 111 are also divided into an inner plate group 11a and an outer plate group 11b, each with multiple limiting plates 111, with the outer plate group 11b located outside the inner plate group 11a. The multiple support latches 121 in the outer latch group 12b are engaged one-to-one with the multiple limiting plates 111 in the outer plate group 11b, and the multiple support latches 121 in the inner latch group 12a are engaged one-to-one with the multiple limiting plates 111 in the inner plate group 11a. Thus, the assembly stability of the connection structure 12 and the base structure 11 in the output electrode base 10 can be improved through the double-layer snap-fit ​​structure.

[0044] In one exemplary embodiment, the outer snap-fit ​​assembly 12b includes two support snaps 121, and the inner snap-fit ​​assembly 12a includes three support snaps 121. That is, the connecting structure 12 has a total of five support snaps 121, wherein the two support snaps 121 located on the outer layer are symmetrically arranged and located on both sides of the three support snaps 121 located on the inner layer. Similarly, the outer plate assembly 11b includes two limiting plates 111, and the inner plate assembly 11a includes three limiting plates 111. That is, the connecting structure 12 has a total of five limiting plates 111, wherein the two limiting plates 111 located on the outer layer are symmetrically arranged and located on both sides of the three limiting plates 111 located on the inner layer.

[0045] In the inner snap-fit ​​assembly 12a, two of the three support snap-fits 121 can be arranged opposite each other, and the third support snap-fit ​​121 can be located between the two support snap-fits 121 and fixedly connected to them. This improves the stability of the inner snap-fit ​​assembly 12a.

[0046] For example, the number of assembly through holes k1 on the base body 112 is three. The three assembly through holes k1 include two first through holes and one second through hole. The two first through holes are located on both sides of the second through hole. The two support buckles 121 in the outer buckle group 12b can be respectively inserted into the two first through holes, and the three support buckles 121 in the inner buckle group 12a can be jointly inserted into the second through hole.

[0047] In an optional embodiment, the support buckle 121 may include a support plate 1211 and a latch 1212. One end of the support plate 1211 is fixedly connected to the connecting body 122, and the other end of the support plate 1211 is fixedly connected to the latch 1212. The support buckle 121 may have a certain degree of elasticity, so that the support buckle 121 has a certain deformation during assembly. For example, the material of the support buckle 121 may include nylon 66 (PA66), polyoxymethylene (POM), high-temperature nylon (PPA), polybutylene terephthalate (PBT), etc.

[0048] Please refer to Figure 10 , Figure 10 yes Figure 2 The diagram shows a cross-sectional structure of the output pole base 10. In an optional embodiment, the base structure 11 may further include a guide post 113. The end of the guide post 113 is fixedly connected to the side of the base body 112 near the connecting body 122. The connecting body 122 has a guide through hole k2, and the guide post 113 passes through the guide through hole k2.

[0049] In one alternative embodiment, the limiting slot c1 includes a limiting through hole that extends through the limiting plate 111 along its thickness direction. This allows the assembler to clearly see the assembly height of the connecting structure 12 during the assembly of the output electrode base 10.

[0050] Please refer to Figure 1 , Figure 4 and Figure 11 , Figure 11 yes Figure 1 The exploded view of a partial structure of the battery module shown indicates that the battery module may include: a cell assembly 40, an end plate 20, a busbar 30, and an output electrode base 10; the end plate 20 is located on one side of the cell assembly 40 and has a mounting groove c2; the output electrode base 10 is assembled in the mounting groove c2 and includes the output electrode base 10 of any of the above embodiments; the busbar 30 is connected to the cell assembly 40 and fixed to the output electrode base 10.

[0051] In one optional embodiment, the mounting groove c2 of the end plate 20 has a positioning groove c3 on its groove wall; the base structure 11 of the output electrode base 10 has a positioning hook 114, which engages in the positioning groove c3. Thus, after the output electrode base 10 is embedded in the mounting groove c2 on the end plate 20, it can be fixed on the end plate 20 by engaging the positioning hook 114 and the positioning groove c3.

[0052] It should be noted that the dimensions of the areas may have been exaggerated in the accompanying drawings for clarity. Furthermore, it is understood that when an element is referred to as "on top of" another element, it can be directly on the other element, or there may be intermediate elements. Additionally, it is understood that when an element is referred to as "below" another element, it can be directly below the other element, or there may be more than one intermediate element. Furthermore, it is also understood that when an element is referred to as "between" two elements, it can be the only layer between the two elements, or there may be more than one intermediate element. Similar reference numerals throughout indicate similar elements.

[0053] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0054] The above description is only an optional embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An output electrode base, characterized in that, include: Base structure and connection structure; The base structure is used to connect the end plate, and the base structure has a first mating component; The connecting structure is movably mounted on the base structure and is movable relative to the base structure along a target direction. The connecting structure is used to connect a busbar and has a second mating member for engaging with the first mating member when the connecting structure moves to a position connected to the busbar.

2. The output electrode base according to claim 1, characterized in that, The first mating component includes a limiting plate, the limiting plate having a plurality of limiting slots arranged along the target direction; The second mating component includes a support buckle. When the connecting structure moves along the target direction, the support buckle is located outside the limiting slot. When the connecting structure moves to the position connected to the busbar, the end of the support buckle extends into one of the multiple limiting slots.

3. The output electrode base according to claim 2, characterized in that, The connection structure includes a connection body and a plurality of support buckles, the ends of which are fixedly connected to the side of the connection body near the base structure. The base structure includes a base body and a plurality of limiting plates fixed on the base body, wherein the plurality of limiting plates are engaged with the plurality of support buckles in a one-to-one correspondence.

4. The output electrode base according to claim 3, characterized in that, The ends of the plurality of limiting plates are all fixedly connected to the side of the base body away from the connecting body; The base body has an assembly through hole, and the support buckle passes through the assembly through hole and engages with the limiting plate.

5. The output electrode base according to claim 3, characterized in that, The plurality of support buckles are divided into an inner buckle group and an outer buckle group. Both the inner buckle group and the outer buckle group have a plurality of support buckles. The outer buckle group is located outside the inner buckle group. The plurality of limiting plates are divided into an inner plate group and an outer plate group. Both the inner plate group and the outer plate group have a plurality of the limiting plates, and the outer plate group is located outside the inner plate group.

6. The output electrode base according to claim 3, characterized in that, The support buckle includes a support plate and a latch. One end of the support plate is fixedly connected to the connecting body, and the other end of the support plate is fixedly connected to the latch.

7. The output electrode base according to claim 3, characterized in that, The base structure also includes a guide post, the end of which is fixedly connected to the side of the base body near the connecting body; The connecting body has a guide hole, and the guide post passes through the guide hole.

8. The output electrode base according to claim 2, characterized in that, The limiting slot includes a limiting through hole, which penetrates the limiting plate along the thickness direction of the limiting plate.

9. A battery module, characterized in that, include: Cell assembly, end plate, busbar and output terminal base; The end plate is located on one side of the cell assembly, and the end plate has a mounting groove; The output electrode base is assembled in the mounting slot, and the output electrode base includes the output electrode base according to any one of claims 1 to 8; The busbar is connected to the battery cell assembly and is fixed to the output electrode base.

10. The battery module according to claim 9, characterized in that, The mounting groove of the end plate has a positioning groove on its groove wall; The base structure of the output electrode base has a positioning hook, which is engaged in the positioning groove.

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