Battery riveting top cover with anti-torsion structure and battery

Abstract

The utility model discloses a battery riveting top cover with an anti-torsion structure and a battery, the battery riveting top cover comprises an end cover body, a riveting block, a first insulating piece, a high-temperature-resistant insulating block and a riveting pole, the end cover body is provided with a first mounting groove and a first positioning groove concavely arranged on the groove wall of the first mounting groove; a second positioning groove is concavely formed in the lower surface of the riveting block; the first insulating part is provided with a third positioning groove corresponding to the second positioning groove in position, the first insulating part is installed in the first installation groove in a matched mode, and the first positioning groove and the third positioning groove are communicated to form a second installation groove with the groove bottom of the first positioning groove as the groove bottom. The lower half part of the high-temperature-resistant insulating block is mounted in the second mounting groove in a concave-convex matching manner, and the upper half part of the high-temperature-resistant insulating block is mounted on the second positioning groove in a concave-convex matching And the end cover body, the first insulating part and the riveting block are riveted together by the riveting pole. Compared with the prior art, the anti-torsion battery riveting top cover has strong anti-torsion capability, and the structure of the assembled battery riveting top cover is more compact and stable.

Description

Technical Field

[0001] This utility model relates to the field of batteries, and in particular to anti-torsion measures for battery end caps. Background Technology

[0002] Currently, lithium-ion / sodium-ion cylindrical batteries are gradually becoming the mainstream product in the new energy industry due to their advantages such as high energy density, good capacity consistency, and ability to support high-rate charging and discharging. More and more manufacturers are choosing cylindrical batteries with riveted top covers to reduce costs and increase production capacity. Common questions:

[0003] 1. In existing cylindrical power battery riveted top cover structures, the common terminals are round and riveted to the top cover. If the anti-rotation limit is insufficient, during long-term vibration / torsion or roller testing during vehicle installation, the busbar will drive the terminals / connecting pieces to rotate, which will directly impact the stability of the battery structure. This will damage the riveted top cover structure (riveting stability, sealing ring wear, etc.), causing problems such as top cover leakage, inability to charge and discharge normally, and overcurrent, affecting the battery's lifespan. 2. When the battery experiences abnormal high temperature and the insulating plastic melts, or when the riveting fastener is warped and deformed during vehicle installation, the overlap between the terminals and the cover may cause a secondary short circuit, leading to fire and explosion, posing a safety hazard to personal safety.

[0004] Therefore, there is an urgent need for a battery riveting top cover and battery with an anti-torsion structure that can solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a battery riveting top cover and battery with an anti-torsion structure, which has strong anti-torsion ability and makes the assembled battery riveting top cover structure more compact and stable.

[0006] To achieve the above objectives, this utility model provides a battery riveting top cover with an anti-torsion structure, comprising an end cover body, a riveting block, a first insulating component, a high-temperature resistant insulating block, and a riveting terminal post. The end cover body has a first through hole, a first mounting groove formed on the upper surface of the end cover body and surrounding the first through hole, and a first positioning groove recessed in the groove wall of the first mounting groove. The riveting block has a second through hole and a second positioning groove formed on the lower surface of the riveting block. The first insulating component has a third through hole and a third positioning groove corresponding to the position of the second positioning groove. The first insulating component is fitted into the first mounting groove, and the first positioning groove and the third positioning groove are connected to form a second mounting groove with the bottom of the first positioning groove as the groove bottom. The lower half of the high-temperature resistant insulating block is fitted into the second mounting groove with a concave-convex fit, and the upper half is fitted into the second positioning groove with a concave-convex fit. The riveting terminal post passes through the first through hole, the third through hole, and the second through hole in sequence, and rivets the end cover body, the first insulating component, and the riveting block together.

[0007] Preferably, the high-temperature resistant insulating block is made of ceramic particles. Of course, the high-temperature resistant insulating block is not limited to ceramic particles; other materials can also be used, such as mica blocks, quartz blocks, composite materials that combine insulation and conductivity, and high-performance polymer materials such as polyimide insulating blocks, where only the entire outer surface of the ceramic particles needs to be insulated.

[0008] Preferably, the first positioning groove, the second positioning groove, the third positioning groove, and the high-temperature resistant insulating block have one or more corresponding elements. Specifically, when there are multiple high-temperature resistant insulating blocks, the multiple high-temperature resistant insulating blocks are arranged around the central axis of the riveted pole.

[0009] Preferably, the high-temperature resistant insulating block is a cylinder. Of course, the high-temperature resistant insulating block can also be other shapes, such as a polygonal column, a frustum, etc.

[0010] Preferably, the outer edge of the first insulating member is provided with an upwardly protruding outer flange surrounding the third through hole, the outer flange forming a first receiving groove for accommodating the rivet block, and the second positioning groove is formed at the outer edge of the rivet block.

[0011] Specifically, the outer flange and the position corresponding to the second mounting groove are provided with an opening at the connection between the outer flange and the main body of the first insulating component, which is matched with the height of the high-temperature resistant insulating block. The height of the high-temperature resistant insulating block is less than the distance between the upper edge of the outer flange and the bottom surface of the main body of the first insulating component, so that the outer flange also has a blocking wall located on the upper side of the opening. When the high-temperature resistant insulating block is installed in the second mounting groove, the blocking wall blocks and abuts against the upper side of the high-temperature resistant insulating block.

[0012] Preferably, the area of ​​the second positioning groove that wraps around the high-temperature resistant insulating block in the horizontal direction is greater than or equal to one-third and less than or equal to one-half of the cross-sectional area of ​​the high-temperature resistant insulating block.

[0013] Preferably, there is a gap between the first through hole and the riveted pole, and the first insulating member is bent downward near the edge of the second through hole to form a first sealing portion extending into the gap.

[0014] Specifically, the battery riveted top cover with anti-torsion structure also includes a sealing ring, which is sleeved on the riveted terminal post and includes a first part located on the lower surface of the end cover body and a second sealing part that bends upward from the first part and extends into the spacing.

[0015] More specifically, the first sealing portion and the second sealing portion are in contact.

[0016] Preferably, the riveting pole includes a riveting pole head located inside the end cap body, a riveting pole body extending upward from the riveting pole head, and a riveting head extending upward from the riveting pole body. The riveting pole head and the riveting pole body have a stepped structure that engages with the inside of the end cap body, and the riveting pole body and the riveting head have a stepped structure that engages with the inside of the riveting block.

[0017] More preferably, the battery riveted top cover with anti-torsion structure further includes a second insulating member having a fourth through hole, the second insulating member being sleeved on the riveted post through the fourth through hole and sandwiched between the riveted post head and the end cover body; the second insulating member and the riveted post head of the riveted post have a first component with a concave-convex fit to prevent the second insulating member from rotating relative to the riveted post.

[0018] More specifically, the lower surface of the second insulating member is provided with an inner flange, the inner flange and the fourth through hole are spaced apart and form a second receiving groove that mates with and accommodates the riveted pole head; the first component includes a first positioning protrusion extending inward from the inner flange and protruding on the bottom of the cavity of the second receiving groove, and a first positioning groove recessed inward from the side of the riveted pole head and mates with the first positioning protrusion; or, the first component includes a first positioning groove formed on the inner flange and a first positioning protrusion protruding outward from the side of the riveted pole head and mates with the first positioning groove.

[0019] More preferably, a second component is provided between the upper surface of the second insulating member and the lower surface of the end cap body, which is spaced from and engages with the center hole of the riveting pole to prevent the second insulating member from rotating relative to the end cap body; the second component includes a second positioning protrusion protruding from the upper surface of the second insulating member and a second positioning groove recessed in the lower surface of the end cap body, or the second component includes a second positioning protrusion protruding from the upper surface of the second insulating member and a second positioning protrusion protruding from the lower surface of the end cap body.

[0020] Preferably, the upper and lower surfaces of the high-temperature resistant insulating block are planar, and the edges of the upper and lower surfaces of the high-temperature resistant insulating block have guide angles to facilitate the assembly of the high-temperature resistant insulating block.

[0021] Preferably, the high-temperature resistant insulating block is interference-fitted with the first insulating component, so that during assembly, the high-temperature resistant insulating block and the first insulating component can be combined together first, which facilitates assembly.

[0022] This utility model also provides a battery, including a battery casing, a battery cell, a current collector, and a battery riveted top cover with an anti-torsion structure as described above. The battery cell is installed inside the battery casing, the current collector is electrically connected to the battery cell and the riveted terminal, and the battery riveted top cover is installed on the battery casing. The end cover body is the cover plate of the battery casing or is integrally formed on the bottom of the battery casing.

[0023] Compared with the prior art, this utility model forms a receiving cavity for accommodating the high-temperature resistant insulating block between the first insulating component, the end cap body, and the riveting block. The receiving cavity consists of a first mounting groove formed on the end cap body, a second positioning groove formed on the riveting block, and a third positioning groove formed on the first insulating component. This allows the high-temperature resistant insulating block to position the first insulating component, the end cap body, and the riveting block, enabling the components to interlock and prevent rotation. This prevents relative torsion between the first insulating component, the end cap body, and the riveting block. When the busbar causes rotational impact to the terminal post during vehicle vibration or roller testing, the components are stress-relieved / limited by the interlocking assistance of the concave second mounting groove and the second positioning groove, thereby improving battery life. Furthermore, the first positioning groove and the third positioning groove are connected to form a second mounting groove with the bottom of the first positioning groove as its bottom. This ensures that the bottom of the first positioning groove is flush with the bottom of the first mounting groove where the first insulating component is mounted. This eliminates the need for a further recessed first positioning groove on the end cap body, reducing the thickness of the end cap body. The depth of the first positioning groove is sufficient to restrict the movement of the high-temperature resistant insulating block. This not only makes the thickness of the assembled battery riveted top cover controllable but also results in a compact and highly stable structure after assembly. Moreover, this invention uses a high-temperature resistant insulating block to restrict the torsion between the first insulating component, the end cap body, and the riveting block. This also ensures that when the first insulating component burns out due to high temperature, the high-temperature resistant insulating block can effectively support the end cap body and the riveting block, preventing the riveting block from tilting and short-circuiting with the end cap body, thus mitigating the safety risks of secondary short circuits, fires, and explosions. Attached Figure Description

[0024] Figure 1 This is a perspective view of the battery riveting top cover with anti-torsion structure of this utility model from one direction.

[0025] Figure 2 This is a perspective view of the battery riveting top cover with anti-torsion structure of this utility model from another direction.

[0026] Figure 3 This is an exploded view of the battery riveting top cover with anti-torsion structure of this utility model from one direction.

[0027] Figure 4 This is an exploded view of another embodiment of the battery riveting top cover with an anti-torsion structure according to this utility model.

[0028] Figure 5 This is a cross-sectional view of the battery riveting top cover with anti-torsion structure of this utility model.

[0029] Figure 6 This is another exploded view of the battery riveting top cover with anti-torsion structure of this utility model.

[0030] Figure 7 yes Figure 1 Enlarged view of part of the image.

[0031] Figure 8 yes Figure 3 This is a partially enlarged image.

[0032] Figure 9 yes Figure 4 This is a partially enlarged image.

[0033] Figure 10 yes Figure 6 This is a partially enlarged image.

[0034] Figure 11 This is a structural diagram showing the second mounting slot formed by the first positioning slot and the second positioning slot. Detailed Implementation

[0035] To explain in detail the technical content, structural features, objectives and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0036] This utility model discloses a battery, including a battery casing, a battery cell, a current collector, and a battery riveting top cover 100 with an anti-torsion structure. The battery cell is installed inside the battery casing, the current collector electrically connects the battery cell and the riveting terminal 30, and the battery riveting top cover 100 is installed on the battery casing. The end cover body 10 is the cover plate of the battery casing or integrally formed on the bottom of the battery casing. In this embodiment, the battery is a cylindrical battery.

[0037] refer to Figures 1 to 5The battery riveting top cover 100 includes an end cover body 10, a riveting block 20, a first insulating member 40, a high-temperature resistant insulating block 70, and a riveting terminal post 30. The end cover body 10 has a first through hole 11, a first mounting groove 12 formed on the upper surface of the end cover body 10 and surrounding the first through hole 11, and a first positioning groove 13 recessed in the groove wall of the first mounting groove 12. The riveting block 20 has a second through hole 21 and a second positioning groove 24 formed on the lower surface of the riveting block 20. The first insulating member 40 has a third through hole 41 and a third positioning groove 43 corresponding to the position of the second positioning groove 24. The first insulating member 40 is fitted into the first mounting groove 12, and the first positioning groove 13 and the third positioning groove 43 are connected to form a second mounting groove 80 with the bottom of the first positioning groove 13 as the bottom (see Figure 11 The lower half of the high-temperature resistant insulating block 70 is installed in the second mounting groove 80 with a concave-convex fit, and the upper half is installed on the second positioning groove 24 with a concave-convex fit; the riveting pole 30 passes through the first through hole 11, the third through hole 41, and the second through hole 21 in sequence and rivets the end cap body 10, the first insulating member 40 and the riveting block 20 together.

[0038] The high-temperature resistant insulating block 70 is made of ceramic particles. However, the high-temperature resistant insulating block is not limited to ceramic particles; other materials can also be used, such as mica blocks, quartz blocks, composite materials that combine insulation and conductivity, and high-performance polymer materials such as polyimide insulating blocks, where only the entire outer surface of the ceramic particles needs to be insulated. The top and bottom surfaces of the high-temperature resistant insulating block 70 are planar, and the edges of the planar surfaces have guide angles.

[0039] In this embodiment, the first positioning groove 13, the second positioning groove 24, the third positioning groove 43, and the high-temperature resistant insulating block 70 each have one corresponding to each other. Of course, the first positioning groove 13, the second positioning groove 24, the third positioning groove 43, and the high-temperature resistant insulating block 70 can also have multiple corresponding to each other. When there are multiple high-temperature resistant insulating blocks 70, the multiple high-temperature resistant insulating blocks 70 are arranged around the central axis of the riveting pole 30, preferably with equal circumference. The high-temperature resistant insulating block 70 is a cylinder. Of course, the high-temperature resistant insulating block can also be other shapes, such as a polygonal column, a frustum, etc.

[0040] refer to Figure 5 and Figure 8The outer edge of the first insulating member 40 has an upwardly protruding flange 42 surrounding the third through hole 41. The outer flange 42 forms a first receiving groove 401 to accommodate the riveting block 20, and the riveting block 20 is installed in the first receiving groove 401 with a concave-convex fit. The second positioning groove 24 is formed on the outer edge of the riveting block 20. The area of ​​the second positioning groove 24 that horizontally encloses the high-temperature resistant insulating block 70 is greater than or equal to one-third and less than or equal to one-half of the cross-sectional area of ​​the high-temperature resistant insulating block 70. In this embodiment, the second positioning groove 24 is a semi-circular or arc-shaped groove.

[0041] refer to Figures 7 to 10 The outer flange 42, corresponding to the position of the second mounting groove 80, has an opening 44 at the connection point with the main body of the first insulating member 40, the opening of which matches the height of the high-temperature resistant insulating block 70. The height of the high-temperature resistant insulating block 70 is less than the distance between the upper edge of the outer flange 42 and the bottom surface of the main body of the first insulating member 40. This allows the outer flange 42 to also have a blocking wall 421 located above the opening 44. When the high-temperature resistant insulating block 70 is installed in the second mounting groove 80, the blocking wall 421 prevents contact with the upper side of the high-temperature resistant insulating block 70, thus limiting and fixing the high-temperature resistant insulating block 70. The first insulating member is made of plastic material, such as PPS or PP.

[0042] refer to Figure 5 There is a gap between the first through hole 11 and the riveted pole 30, and the first insulating member 40 is bent downward near the edge of the second through hole 21 to form a first sealing part 45 extending into the gap.

[0043] refer to Figures 3 to 5 The battery riveted top cover 100 with an anti-torsion structure also includes a sealing ring, which is sleeved on the riveted terminal post 30 and includes a first portion 62 located on the lower surface of the end cover body 10 and a second sealing portion 61 that bends upward from the first portion 62 and extends into the spacing. (Reference) Figure 5 The first sealing part 45 and the second sealing part 61 come into contact, enhancing the sealing performance of the battery riveted top cover 100.

[0044] Preferably, the riveting pole 30 includes a riveting pole head 31 located inside the end cap body 10, a riveting pole body 32 extending upward from the riveting pole head 31, and a riveting head 33 extending upward from the riveting pole body 32. The riveting pole head 31 and the riveting pole body 32 have a stepped structure that engages with the inside of the end cap body 10, and the riveting pole body 32 and the riveting head 33 have a stepped structure that engages with the inside of the riveting block 20.

[0045] refer to Figure 6 The riveting block 20 has a riveting groove 22 and a countersunk groove 23. The riveting groove 22 is opened at the bottom of the countersunk groove 23. The second through hole 21 is opened at the bottom of the riveting groove 22. The riveting head 33 passes through the second through hole and is riveted to the riveting groove 22.

[0046] refer to Figures 3 to 5 The battery riveting top cover 100 also includes a second insulating member 50 having a fourth through hole 51. The second insulating member 50 is sleeved on the riveting post 30 through the fourth through hole 51 and sandwiched between the riveting post head 31 and the end cover body 10. The second insulating member 50 and the riveting post head 31 of the riveting post 30 have a first component with a concave-convex fit to prevent the second insulating member 50 from rotating relative to the riveting post 30.

[0047] refer to Figure 4 and Figure 5 The lower surface of the second insulating member 50 is provided with an inner flange 55. The inner flange 55 and the fourth through hole 51 are spaced apart and form a second receiving groove 56 that mates with and accommodates the riveted pole head 31. The lower surface of the second insulating member 50 is provided with an outer flange 54. The outer flanges 54 form a positioning groove for positioning the battery cell and the current collector. The current collector can be a Z-shaped current collector.

[0048] refer to Figures 3 to 5 ,as well as Figure 9 The first component includes a first positioning protrusion 53 extending inward from the inner flange 55 and protruding onto the bottom of the cavity of the second receiving groove 56, and a first positioning groove 311 recessed inward from the side of the riveting pole head 31 and engaging with the first positioning protrusion 53. Of course, the first positioning protrusion 53 and the first positioning groove 311 can also be interchanged.

[0049] Preferably, a second component is provided between the upper surface of the second insulating member 50 and the lower surface of the end cap body 10, which is spaced from and fits into the center hole of the riveting pole 30, to prevent the second insulating member 50 from rotating relative to the end cap body 10.

[0050] refer to Figure 3 and Figure 4 The second component includes a second positioning protrusion 52 protruding from the upper surface of the second insulating member 50 and a second positioning groove 14 recessed from the lower surface of the end cap body 10. Of course, the second positioning protrusion 52 and the second positioning groove 14 can also be interchanged.

[0051] refer to Figure 2 and Figure 3The following describes the assembly process of the battery riveting top cover 100 of this utility model:

[0052] First, the high-temperature resistant insulating block 70 is embedded into the opening 44 and the third positioning groove 43 of the first insulating component 40, with an interference fit between the high-temperature resistant insulating block 70 and the first insulating component 40. The riveting pole 30 is then placed into the riveting mold for fixture positioning. The second insulating component 50 is placed into the riveting mold, with its fourth through hole 51 fitted onto the riveting pole 30. The end cap body 10 is placed into the riveting mold and fitted onto the riveting pole. The first insulating component 40 is placed into the first mounting groove 12 on the end cap body 10, and the high-temperature resistant insulating block 70 is accommodated in the first positioning groove 13, with the third through hole 41 fitted onto the riveting pole 30. The riveting block 20 is placed on the first insulating component 40, and the high-temperature resistant insulating block 70 is accommodated in the second positioning groove 24, with the upper half of the high-temperature resistant insulating block 70 fitting into the second positioning groove 24. The riveting block 20 is pressed down using a riveting fixture to complete the expansion riveting. Finally, laser welding is used to fix the riveted parts (the upper edge of the riveted pole 20).

[0053] In this embodiment, the end cap body 10 is an aluminum shell or a steel shell, and the riveting block 20 is made of aluminum, iron, or a composite material. The riveting pole 30 is a copper pole.

[0054] In this invention, the vertical and horizontal positions are relative, not absolute. In this embodiment, the extension direction of the end cap body or the bottom shell of the battery case is horizontal, and the vertical direction is perpendicular to the horizontal direction.

[0055] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the scope of the present utility model application shall still fall within the scope of the present utility model.

Claims

1. A battery riveted top cover with an anti-torsion structure, characterized in that: include: The end cap body has a first through hole, a first mounting groove formed on the upper surface of the end cap body and surrounding the first through hole, and a first positioning groove recessed in the groove wall of the first mounting groove. The rivet block has a second through hole and a second positioning groove formed on the lower surface of the rivet block; The first insulating member has a third through hole and a third positioning groove corresponding to the position of the second positioning groove. The first insulating member is fitted into the first mounting groove and the first positioning groove and the third positioning groove are connected to form a second mounting groove with the bottom of the first positioning groove as the bottom. The high-temperature resistant insulating block has its lower half installed in the second mounting groove with a concave-convex fit, and its upper half installed on the second positioning groove with a concave-convex fit. The riveted pole is passed through the first through hole, the third through hole, and the second through hole in sequence, and the end cap body, the first insulating member, and the riveting block are riveted together.

2. The battery riveted top cover with an anti-torsion structure as described in claim 1, characterized in that: The high-temperature resistant insulating block is made of ceramic particles.

3. The battery riveting top cover with an anti-torsion structure as described in claim 1, characterized in that: The first positioning groove, the second positioning groove, the third positioning groove and the high-temperature resistant insulating block have one or more corresponding to each other.

4. The battery riveting top cover with an anti-torsion structure as described in claim 1, characterized in that: The high-temperature resistant insulating block is cylindrical.

5. The battery riveting top cover with an anti-torsion structure as described in claim 1, characterized in that: The outer edge of the first insulating member has an upwardly protruding flange surrounding the third through hole, and the outer flange forms a first receiving groove for accommodating the rivet block. The second positioning groove is opened at the outer edge of the rivet block.

6. The battery riveting top cover with an anti-torsion structure as described in claim 5, characterized in that: The outer flange, corresponding to the second mounting groove, has an opening at the connection point with the main body of the first insulating component, which matches the height of the high-temperature resistant insulating block. The height of the high-temperature resistant insulating block is less than the distance between the upper edge of the outer flange and the bottom surface of the main body of the first insulating component, so that the outer flange also has a blocking wall located above the opening. When the high-temperature resistant insulating block is installed in the second mounting groove, the blocking wall prevents contact with the upper side of the high-temperature resistant insulating block.

7. The battery riveting top cover with an anti-torsion structure as described in claim 1, characterized in that: The area of ​​the second positioning groove that wraps around the high-temperature resistant insulating block in the horizontal direction is greater than or equal to one-third and less than or equal to one-half of the cross-sectional area of ​​the high-temperature resistant insulating block.

8. The battery riveting top cover with an anti-torsion structure as described in claim 1, characterized in that: There is a gap between the first through hole and the riveted pole, and the first insulating member is bent downward near the edge of the second through hole to form a first sealing part that extends into the gap.

9. The battery riveting top cover with an anti-torsion structure as described in claim 8, characterized in that: It also includes a sealing ring, which is fitted onto the riveted pole and includes a first portion located on the lower surface of the end cap body and a second sealing portion that bends upward from the first portion and extends into the spacing.

10. The battery riveting top cover with an anti-torsion structure as described in claim 9, characterized in that: The first sealing part and the second sealing part are in contact.

11. The battery riveting top cover with an anti-torsion structure as described in claim 1, characterized in that: The riveting pole includes a riveting pole head located inside the end cap body, a riveting pole body extending upward from the riveting pole head, and a riveting head extending upward from the riveting pole body. The riveting pole head and the riveting pole body have a stepped structure that engages with the inside of the end cap body, and the riveting pole body and the riveting head have a stepped structure that engages with the inside of the riveting block.

12. The battery riveted top cover with an anti-torsion structure as described in claim 11, characterized in that: It also includes a second insulating member having a fourth through hole, the second insulating member being sleeved on the riveting pole through the fourth through hole and sandwiched between the riveting pole head and the end cap body; a first component with a concave-convex fit between the second insulating member and the riveting pole head of the riveting pole to prevent the second insulating member from rotating relative to the riveting pole.

13. The battery riveting top cover with an anti-torsion structure as described in claim 12, characterized in that: The lower surface of the second insulating member is provided with an inner flange, and there is a gap between the inner flange and the fourth through hole, forming a second receiving groove that fits with and accommodates the riveted pole head. The first component includes a first positioning protrusion extending inward from the inner flange and protruding on the bottom of the second receiving groove, and a first positioning groove recessed inward from the side of the riveted pole head and engaging with the first positioning protrusion; or, the first component includes a first positioning groove formed on the inner flange and a first positioning protrusion protruding outward from the side of the riveted pole head and engaging with the first positioning groove.

14. The battery riveted top cover with an anti-torsion structure as described in claim 12, characterized in that: A second component is provided between the upper surface of the second insulating member and the lower surface of the end cap body, which is spaced from and fits in a concave-convex manner with the center hole of the riveting pole to prevent the second insulating member from rotating relative to the end cap body. The second component includes a second positioning protrusion protruding from the upper surface of the second insulating member and a second positioning groove recessed from the lower surface of the end cap body, or the second component includes a second positioning protrusion protruding from the upper surface of the second insulating member and a second positioning protrusion protruding from the lower surface of the end cap body.

15. The battery riveting top cover with an anti-torsion structure as described in claim 1, characterized in that: The upper and lower surfaces of the high-temperature resistant insulating block are flat, and the edges of the upper and lower surfaces of the high-temperature resistant insulating block have guide angles.

16. The battery riveting top cover with an anti-torsion structure as described in claim 1, characterized in that: The high-temperature resistant insulating block is interference-fitted with the first insulating component.

17. A battery, characterized in that: The battery includes a battery casing, a battery cell, a current collector, and a battery riveted top cover with an anti-torsion structure as described in any one of claims 1-16. The battery cell is installed inside the battery casing, the current collector is electrically connected to the battery cell and the riveted terminal, the battery riveted top cover is installed on the battery casing, and the end cover body is the cover plate of the battery casing or integrally formed on the bottom of the battery casing.

Images