Pole, pole riveting assembly, battery end cover structure, battery shell and battery

Abstract

The utility model discloses a pole, a pole riveting assembly, a battery end cover structure, a battery shell and a battery. The terminal post comprises a backstop body and a riveting body, the riveting body is fixedly combined with the backstop body, the radial width of the backstop body is larger than that of the riveting body, the riveting body is provided with an annular riveting structure back to the backstop body, and when the riveting body is pressed in the axial direction of the riveting body, the riveting body can be riveted to the backstop body. The riveting structure can deform outwards in the radial direction of the riveting body, and deformation comprises bending and / or extension. According to the utility model, the riveting between the pole and the pressing plate is realized by adopting a mode of inversely riveting the pole, so that the manufacturing cost and the sealing risk can be reduced.

Description

Technical Field

[0001] The utility model particularly relates to a pole, a pole riveting assembly, a battery end cover structure, a battery shell and a battery, and belongs to the technical field of battery packaging. Background Art

[0002] As the public's awareness of sustainable development continues to grow, the development of new energy has become a global focus, and many different types of batteries have emerged to meet the growing demand for electric vehicles. At the same time, accidents caused by battery failures are also emerging.

[0003] At present, there are two types of aluminum shell cover plates: square bipolar column and round monopolar column. Both riveting methods are external riveting. The square bipolar column riveting has a high manufacturing cost. The two poles not only mean an increase in materials, but also double the sealing requirements. When riveting the round monopolar column, the edge of the terminal may be warped, which leads to the failure of riveting. Some round monopolar columns need to be welded together with the negative terminal by electric welding, which not only has high requirements for welding technology, but also the rivets on the terminal occupy a certain space during welding, which needs to be avoided during welding.

[0004] Therefore, a battery end cover riveting method is urgently needed, which can not only save costs and reduce product molding processes, but also prevent accidents caused by battery failure. The present invention adopts a single pole, has excellent sealing performance, and does not require giving way for welding. Utility Model Content

[0005] The main purpose of the utility model is to provide a pole, a pole riveting assembly, a battery end cover structure, a battery shell and a battery, so as to overcome the deficiencies in the prior art.

[0006] In order to achieve the above-mentioned utility model purpose, the technical solution adopted by the utility model includes:

[0007] The first aspect of the utility model provides a pole, comprising: a stopper and a riveted body, wherein the riveted body is fixedly combined with the stopper, the radial width of the stopper is greater than the radial width of the riveted body, and the riveted body has an annular riveted structure facing away from the stopper, and when the riveted body is subjected to pressure applied along its own axial direction, the riveted structure can deform radially outwardly of the riveted body, and the deformation includes bending and / or extension.

[0008] The second aspect of the utility model provides a pole riveting assembly, comprising: a pressure plate and the pole, the pressure plate is provided with a second groove-shaped structure, the side wall of the second groove-shaped structure is inclined inwardly along the direction of the groove, the riveted structure of the pole can be correspondingly arranged in the second groove-shaped structure, when the riveted body is subjected to pressure applied along its own axial direction, the riveted structure can be deformed radially outwardly along the riveted body, the deformed riveted structure is in contact with the groove bottom and side wall of the second groove-shaped structure, and forms a mutually engaged riveted structure, and the deformation includes bending and / or extension.

[0009] The third aspect of the utility model provides a battery end cover structure, including a cover plate, a first insulating member, a second insulating member and a negative current collector, and a pole riveting assembly, wherein the cover plate is arranged between the first insulating member and the second insulating member, and connecting holes are arranged on the cover plate, the first insulating member and the second insulating member. The riveted body of the pole passes through a plurality of the connecting holes and is arranged in the second groove structure of the pressing plate and is riveted to the pressing plate, and the negative current collector is arranged on the side of the pressing plate facing away from the second insulating member and is fixedly combined with the pressing plate.

[0010] A fourth aspect of the utility model provides a battery case, comprising: the battery end cover structure.

[0011] A fifth aspect of the utility model provides a battery, comprising: the battery end cover structure, or the battery shell.

[0012] Compared with the prior art, the advantages of the utility model include: the utility model adopts the method of inverted riveting of the pole to achieve the riveting between the pole and the pressure plate, which can reduce the manufacturing cost and sealing risk, and the riveting method of the pole riveting assembly provided by the utility model only requires stamping riveting, and does not require additional welding and making way for avoidance, thereby reducing the product production process. At the same time, the battery end cover structure provided by the utility model is an explosion-proof battery end cover with pole riveting, which adopts a structure in which the pole is inverted and the pressure plate is embedded, which can not only save costs and simplify the process flow, but also effectively reduce accidents caused by battery failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a top view of a pole riveting assembly provided in Example 1 of the utility model;

[0015] Figure 2 This is a structural schematic diagram of a pole riveting assembly in a separated state provided by Embodiment 1 of the utility model;

[0016] Figure 3 yes Figure 1 Schematic diagram of the cross-sectional structure formed along BB;

[0017] Figure 4 This is a schematic structural diagram of a pole riveting assembly in a riveted state provided by Embodiment 1 of the utility model;

[0018] Figure 5 This is a structural explosion diagram of a battery end cover structure provided by Example 2 of the utility model;

[0019] Figure 6 It is a top view of a battery end cover structure provided in Example 2 of the utility model. DETAILED DESCRIPTION

[0020] In view of the deficiencies in the prior art, the inventor of this case has proposed the technical solution of the utility model after long-term research and extensive practice. The technical solution, its implementation process and principle will be further explained as follows.

[0021] The first aspect of the utility model provides a pole, comprising: a stopper and a riveted body, wherein the riveted body is fixedly combined with the stopper, the radial width of the stopper is greater than the radial width of the riveted body, and the riveted body has an annular riveted structure facing away from the stopper, and when the riveted body is subjected to pressure applied along its own axial direction, the riveted structure can deform radially outwardly of the riveted body, and the deformation includes bending and / or extension.

[0022] Furthermore, the end of the riveted body facing away from the stopper body has a selected end surface, a first groove-shaped structure is arranged on the selected end surface, and a portion of the riveted body surrounding the first groove-shaped structure serves as the riveted structure.

[0023] Furthermore, the inner diameter of the riveted structure gradually decreases in a direction approaching the stopper.

[0024] Furthermore, the outer diameter of the riveted structure is uniform in the axial direction of the riveted body, or the outer diameter of the riveted structure gradually decreases in the direction approaching the stopper body.

[0025] Furthermore, a first angle is formed between the inner annular surface of the riveted structure and the radial cross section of the riveted body, 10°≤first angle<180°, preferably 90°<first angle<180°.

[0026] Furthermore, the outer peripheral edge portion of the stopper body has a first step structure.

[0027] Furthermore, the stop body includes a first stop portion and a second stop portion arranged in sequence along its own axial direction, the riveted body is fixedly combined with the second stop portion, the radial width of the second stop portion is smaller than the radial width of the first stop portion, and the first step structure is formed between the outer peripheral surface of the second stop portion and the outer peripheral surface of the first stop portion.

[0028] Furthermore, the circumferential surface of the second stop portion has a first positioning plane for positioning.

[0029] Furthermore, the stopper body and the riveted body are both cylindrical structures as a whole.

[0030] Furthermore, the stopper body and the riveting body are coaxially arranged.

[0031] Furthermore, the first stopper, the second stopper and the riveted body are coaxially arranged.

[0032] The second aspect of the utility model provides a pole riveting assembly, comprising: a pressure plate and the pole, the pressure plate is provided with a second groove-shaped structure, the side wall of the second groove-shaped structure is inclined inwardly along the direction of the groove, the riveted structure of the pole can be correspondingly arranged in the second groove-shaped structure, when the riveted body is subjected to pressure applied along its own axial direction, the riveted structure can be deformed radially outwardly along the riveted body, the deformed riveted structure is in contact with the groove bottom and side wall of the second groove-shaped structure, and forms a mutually engaged riveted structure, and the deformation includes bending and / or extension.

[0033] Furthermore, the depth of the second groove structure is 30%-90% of the thickness of the pressing plate.

[0034] Furthermore, a second angle is formed between the side wall and the bottom of the second groove-shaped structure, and 10°≤the second angle<180°.

[0035] Furthermore, the radial width of the pressing plate is greater than the outer diameter of the riveted structure but smaller than the radial width of the stopper.

[0036] The third aspect of the utility model provides a battery end cover structure, including a cover plate, a first insulating member, a second insulating member and a negative current collector, and a pole riveting assembly, wherein the cover plate is arranged between the first insulating member and the second insulating member, and connecting holes are arranged on the cover plate, the first insulating member and the second insulating member. The riveted body of the pole passes through a plurality of the connecting holes and is arranged in the second groove structure of the pressing plate and is riveted to the pressing plate, and the negative current collector is arranged on the side of the pressing plate facing away from the second insulating member and is fixedly combined with the pressing plate.

[0037] Furthermore, a third groove-like structure is provided on the first surface of the first insulating member facing away from the cover plate, the second stop portion of the stop body is provided in the third groove-like structure, the outer peripheral surface of the second stop portion is in contact with the side wall of the third groove-like structure, and the first stop portion of the stop body is in contact with the first surface of the first insulating member.

[0038] Furthermore, the side wall of the third groove-shaped structure includes a second positioning plane, and the second positioning plane corresponds to and fits with the first positioning plane.

[0039] Furthermore, a first positioning protrusion is provided on one of the cover plate and the first insulating member, and a first positioning hole is provided on the other one, and the first positioning protrusion is correspondingly embedded in the first positioning hole.

[0040] Furthermore, a second positioning protrusion is provided on one of the cover plate and the second insulating member, and a second positioning hole is provided on the other one, and the second positioning protrusion is correspondingly embedded in the second positioning hole.

[0041] In a more specific embodiment, the battery end cover structure further includes: a sealing ring, which is arranged between the riveted body of the pole and the cover plate, the first insulating member, and the second insulating member.

[0042] In a more specific embodiment, the battery end cover structure further includes: an explosion-proof sheet, the cover plate is provided with an explosion-proof hole, and the explosion-proof sheet is provided on the cover plate and covers the explosion-proof hole.

[0043] Furthermore, the surface of the explosion-proof disk is covered with a protective film.

[0044] A fourth aspect of the utility model provides a battery case, comprising: the battery end cover structure.

[0045] A fifth aspect of the utility model provides a battery, comprising: the battery end cover structure, or the battery shell.

[0046] The technical solution, its implementation process and principle will be further explained below in conjunction with the accompanying drawings and specific implementation cases. Unless otherwise specified, the cover plate, explosion-proof disk, protection mold, insulating member and pole in the following embodiments can be obtained by commercial purchase or conventional processing in the field.

[0047] Example 1

[0048] See also Figure 1-Figure 4 A pole riveting assembly includes a pressing plate 40 and a pole 10, wherein the pole 10 includes a stopper 11 and a riveted body 12, wherein the riveted body 12 is fixedly combined with the stopper 11, wherein the radial width of the stopper 11 is greater than the radial width of the riveted body 12, wherein the end of the riveted body 12 facing away from the stopper 11 has a selected end face, wherein the selected end face is provided with a first groove-shaped structure 1201, wherein the riveted body 12 surrounds a portion of the first groove-shaped structure 1201 to form an annular riveted structure 1202, and wherein the pressing plate 40 is provided with a second groove The second groove-shaped structure 41 has a side wall that is inclined inwardly toward the groove. The riveted structure 1202 of the pole 10 can be correspondingly arranged in the second groove-shaped structure 41. When the riveted body 12 is subjected to pressure applied along its own axial direction, the riveted structure 1202 can be deformed radially outwardly of the riveted body 12. The deformed riveted structure 1202 fits with the groove bottom and side wall of the second groove-shaped structure 41 to form a mutually engaged riveted structure 1202. The structure of the pressure plate 40 and the pole 10 after riveting is as shown in FIG. Figure 4 As shown, wherein the deformation includes bending and / or extension.

[0049] In this embodiment, the riveted structure 1202 needs to meet the following conditions: when the riveted body 12 is subjected to pressure applied along its own axial direction, the riveted structure 1202 can be deformed radially outwardly of the riveted body 12. To achieve this purpose, the inner diameter of the riveted structure 1202 gradually decreases in the direction approaching the stopper 11, that is, the side wall of the first groove-shaped structure 1201 is inclined outwardly in the direction approaching the notch, and the outer diameter of the riveted structure 1202 is uniform in the axial direction of the riveted body 12, or the outer diameter of the riveted structure 1202 gradually decreases in the direction approaching the stopper 11. Specifically, there is a first angle a between the inner annular surface of the riveted structure 1202 and the radial cross section of the riveted body 12, 10°≤first angle a<180°, and the first angle a can also be understood as the angle between the side wall and the groove bottom of the first groove-shaped structure 1201.

[0050] It should be noted that the riveted structure 1202 may be a continuous structure continuously arranged along the circumference of the riveted body 12 , or may be a plurality of discontinuous structures arranged at intervals.

[0051] In this embodiment, the depth of the second groove-like structure 41 is 30%-90% of the thickness of the pressing plate 40, and a second angle b is formed between the side wall and the groove bottom of the second groove-like structure 41, and 10°≤second angle b<180°. Specifically, the diameter of the notch of the second groove-like structure 41 is slightly larger than the outer diameter of the riveted structure 1202 of the riveted body 12, which not only ensures that the riveted structure 1202 of the pole 10 can be embedded in the second groove-like structure 41, but also enables the pressing plate 40 and the pole 10 to form a stable riveted structure 1202, thereby preventing the pressing plate 40 and the pole 10 from detaching along their own axial direction.

[0052] In this embodiment, the outer peripheral edge of the stopper 11 has a first step structure 1103, and the first step structure 1103 is mainly used to limit and position the pole 10; specifically, the stopper 11 includes a first stopper 1101 and a second stopper 1102 sequentially arranged along its own axial direction, the riveted body 12 is fixedly combined with the second stopper 1102, the radial width of the second stopper 1102 is smaller than the radial width of the first stopper 1101, and the first step structure 1103 is formed between the outer peripheral surface of the second stopper 1102 and the outer peripheral surface of the first stopper 1101. More specifically, the circumferential surface of the second stopper 1102 has a first positioning plane 1104, and the first positioning plane 1104 can not only realize the positioning of the pole 10, but also limit the pole 10 to prevent the pole 10 from rotating. In this embodiment, the first stopper 1101, the second stopper 1102 and the riveted body 12 are all cylindrical structures as a whole, the outer peripheral surfaces of the first stopper 1101 and the second stopper 1102 are all arc surfaces as a whole, and the first stopper 1101, the second stopper 1102 and the riveted body 12 are all coaxially arranged.

[0053] It should be noted that the first stopper 1101 and the second stopper 1102 may be fixedly combined by a known fixing method or may be integrated, and the riveted body 12 and the second stopper 1102 may be fixedly combined by a known fixing method or may be integrated.

[0054] In this embodiment, the pole 10 and the pressure plate 40 are both metal components with good ductility. When the pole 10 and the pressure plate 40 are subjected to pressure applied along the axial direction of the pole 10, the riveted structure 1202 at the end of the pole 10 is more susceptible to stress concentration and deformation, and then bends or extends outward, while the thickness of the pressure plate 40 is relatively thick and not easy to deform. Therefore, the riveted structure 1202 of the pole 10 can well form a mutually engaged riveted structure 1202 with the second groove structure 41 of the pressure plate 40.

[0055] Example 2

[0056] See also Figure 5-Figure 6 A battery end cover structure includes a pole 10, a cover plate 20, a sealing ring 30, a pressing plate 40, a first insulating member 50, a protective film 60, an explosion-proof disk 70, a second insulating member 80 and a negative current collector 90;

[0057] The cover plate 20 is arranged between the first insulating member 50 and the second insulating member 80, and connecting holes are arranged on the cover plate 20, the first insulating member 50 and the second insulating member 80. The riveted body of the pole 10 is arranged in the second groove structure of the pressing plate 40 through a plurality of the connecting holes and is riveted to the pressing plate 40. The sealing ring 30 is sleeved between the riveted body of the pole 10 and the connecting holes of the cover plate 20, the first insulating member 50 and the second insulating member 80. An explosion-proof hole is arranged on the cover plate 20, the explosion-proof sheet 70 is arranged on the cover plate 20 and covers the explosion-proof hole, the protective film 60 covers the explosion-proof sheet 70, and the negative current collecting sheet 90 is fixedly connected to the pressing plate 40.

[0058] In this embodiment, the cover plate 20, the sealing ring 30, the first insulating member 50, and the second insulating member 80 are riveted together by the pole 10 and the pressure plate 40. The pole 10 and the pressure plate 40 are riveted together by stamping. During stamping, the pole 10 squeezes the first insulating member 50, and the first insulating member 50 transfers the pressure to the cover plate 20. The cover plate 20 squeezes the sealing ring 30 and the first insulating member 50, and the second insulating member 80. The riveted structure of the pole 10 is compressed and deformed, and then flipped outward and engaged with the second groove structure of the pressure plate.

[0059] In this embodiment, the sealing ring 30, the first insulating member 50, and the second insulating member 80 are all flexible components, such as rubber components, which are easily deformed by being squeezed, while the cover plate 20, the pole 10, and the pressure plate 40 are relatively difficult to deform due to their relatively hard materials. The sealing ring 30, the first insulating member 50, and the second insulating member 80 can play a good sealing role when squeezed.

[0060] In this embodiment, the explosion-proof disc 70 and the cover plate 20 can be fixed together by electric welding, and the negative current collecting sheet 90 and the pressing plate 40 can also be fixedly connected by welding or other methods.

[0061] Specifically, the protective film 60 can prevent scratches on the surface of the explosion-proof plate 70, ensure the stability of the explosion value, and prevent the explosion value from being affected by collision.

[0062] In this embodiment, the first insulating member 50 is further provided with a third groove-shaped structure 51 on the first surface facing away from the cover plate 20, the second stopper of the stopper body is provided in the third groove-shaped structure 51, the outer peripheral surface of the second stopper portion is in contact with the side wall of the third groove-shaped structure 51, and the first stopper of the stopper body is in contact with the first surface of the first insulating member 50. The side wall of the third groove-shaped structure 51 includes a second positioning plane 52, and the second positioning plane 52 corresponds to and is in contact with the first positioning plane.

[0063] In this embodiment, a first positioning protrusion is further provided on one of the cover plate 20 and the first insulating member 50, and a first positioning hole is further provided on the other, and the first positioning protrusion is correspondingly embedded in the first positioning hole. A second positioning protrusion is further provided on one of the cover plate 20 and the second insulating member 80, and a second positioning hole is further provided on the other, and the second positioning protrusion is correspondingly embedded in the second positioning hole. Through the provided positioning holes and positioning protrusions, on the one hand, the cover plate 20 and the first insulating member 50 and the second insulating member 80 can be kept relatively fixed to prevent them from rotating. On the other hand, it can also play a certain positioning role in the assembly of the cover plate 20 and the first insulating member 50 and the second insulating member 80, thereby effectively ensuring the position accuracy of the riveting.

[0064] During the specific assembly, the cover plate 20 and the explosion-proof plate 70 can be welded together by laser welding first, and then the negative electrode current collector 90 and the pressure plate 40 can be welded together by ultrasonic welding. Finally, the cover plate 20, the sealing ring 30, the first insulating member 50, the second insulating member 80 and the pressure plate 40 can be riveted together by the pole 10 to form a battery explosion-proof end cover.

[0065] The utility model adopts the method of inverted riveting of the pole to realize the riveting between the pole and the pressure plate, which can reduce the manufacturing cost and the sealing risk. The riveting method of the pole riveting assembly provided by the utility model only requires stamping riveting, and does not require additional welding and making way, thereby reducing the product production process.

[0066] It should be understood that the above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A pole, characterized in that: include: A stopper body and a riveted body, wherein the riveted body is fixedly combined with the stopper body, the radial width of the stopper body is greater than the radial width of the riveted body, and the riveted body has an annular riveted structure facing away from the stopper body, and when the riveted body is subjected to pressure applied along its own axial direction, the riveted structure can deform radially outwardly along the riveted body, and the deformation includes bending and / or extension.

2. The pole according to claim 1, characterized in that: The end of the riveting body facing away from the stopper body has a selected end surface, a first groove-shaped structure is arranged on the selected end surface, and a portion of the riveting body surrounding the first groove-shaped structure serves as the riveting structure.

3. The pole according to claim 2, characterized in that: The inner diameter of the riveted structure gradually decreases in a direction approaching the stopper.

4. The pole according to claim 2, characterized in that: The outer diameter of the riveted structure is uniform in the axial direction of the riveted body, or the outer diameter of the riveted structure gradually decreases in a direction approaching the stopper body.

5. The pole according to claim 2, characterized in that: A first angle is formed between the inner annular surface of the riveted structure and the radial cross section of the riveted body, and 10°≤first angle<180°.

6. The pole according to claim 1, characterized in that: The outer peripheral edge portion of the stopper body has a first step structure.

7. The pole according to claim 6, characterized in that: The stopper body includes a first stopper portion and a second stopper portion sequentially arranged along its own axial direction, the riveted body is fixedly combined with the second stopper portion, the radial width of the second stopper portion is smaller than the radial width of the first stopper portion, and the first step structure is formed between the outer peripheral surface of the second stopper portion and the outer peripheral surface of the first stopper portion.

8. The pole according to claim 7, characterized in that: The circumferential surface of the second stopper has a first positioning plane for positioning.

9. The pole according to claim 7, characterized in that: The stopper body and the riveted body are both cylindrical structures as a whole.

10. The pole according to claim 9, characterized in that: The stopper body and the riveting body are coaxially arranged.

11. The pole according to claim 9, characterized in that: The first stopper, the second stopper and the riveting body are coaxially arranged.

12. A pole riveting assembly, characterized in that: include: A pressure plate and a pole as described in any one of claims 1 to 11, wherein a second groove-like structure is arranged on the pressure plate, and the side walls of the second groove-like structure are inclined inwardly in the direction of the groove opening, and the riveted structure of the pole can be correspondingly arranged in the second groove-like structure, and when the riveted body is subjected to pressure applied along its own axial direction, the riveted structure can be deformed radially outwardly along the riveted body, and the deformed riveted structure is in contact with the groove bottom and side walls of the second groove-like structure to form a mutually engaging riveted structure, and the deformation includes bending and / or extension.

13. The pole riveting assembly according to claim 12, characterized in that: The depth of the second groove structure is 30%-90% of the thickness of the pressing plate.

14. The pole riveting assembly according to claim 12, characterized in that: A second angle is formed between the side wall and the bottom of the second groove-shaped structure, and 10°≤the second angle<180°.

15. The pole riveting assembly according to claim 12, characterized in that: The radial width of the pressing plate is greater than the outer diameter of the riveting structure but smaller than the radial width of the stopper.

16. A battery end cover structure, comprising a cover plate, a first insulating member, a second insulating member and a negative current collector, characterized in that: Also includes: The pole riveting assembly of claim 12 or 13 or 14 or 15, wherein the cover plate is arranged between the first insulating member and the second insulating member, the cover plate, the first insulating member and the second insulating member are provided with connecting holes, the riveted body of the pole passes through a plurality of the connecting holes and is arranged in the second groove-shaped structure of the pressing plate and is riveted to the pressing plate, and the negative current collector is arranged on the side of the pressing plate facing away from the second insulating member and is fixedly combined with the pressing plate.

17. The battery end cover structure according to claim 16, characterized in that: A third groove-shaped structure is also provided on the first surface of the first insulating member facing away from the cover plate, the second stop portion of the stop body is provided in the third groove-shaped structure, the outer peripheral surface of the second stop portion is in contact with the side wall of the third groove-shaped structure, and the first stop portion of the stop body is in contact with the first surface of the first insulating member.

18. The battery end cover structure according to claim 17, characterized in that: The side wall of the third groove-shaped structure includes a second positioning plane, and the second positioning plane corresponds to and fits with the first positioning plane.

19. The battery end cover structure according to claim 17, characterized in that: A first positioning protrusion is further provided on one of the cover plate and the first insulating member, and a first positioning hole is further provided on the other one, and the first positioning protrusion is correspondingly embedded in the first positioning hole.

20. The battery end cover structure according to claim 17, characterized in that: A second positioning protrusion is further provided on one of the cover plate and the second insulating member, and a second positioning hole is further provided on the other one, and the second positioning protrusion is correspondingly embedded in the second positioning hole.

21. The battery end cover structure according to claim 17, characterized in that: The battery end cover structure further includes: a sealing ring, which is arranged between the riveted body of the pole and the cover plate, the first insulating member, and the second insulating member.

22. The battery end cover structure according to claim 17, characterized in that: The battery end cover structure further includes: an explosion-proof sheet, the cover plate is provided with an explosion-proof hole, and the explosion-proof sheet is arranged on the cover plate and covers the explosion-proof hole.

23. The battery end cover structure according to claim 22, characterized in that: The surface of the explosion-proof disk is covered with a protective film.

24. A battery case, characterized in that: include: The battery end cover structure according to any one of claims 16 to 23.

25. A battery, characterized in that: include: The battery end cover structure according to any one of claims 16 to 23, or the battery shell according to claim 24.

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