Cover plate assembly, battery and vehicle

Abstract

The utility model relates to a cover plate subassembly, battery and vehicle, wherein the cover plate subassembly includes post terminal, seal ring and bright aluminum sheet, the post terminal is provided with welding plate and vent groove, seal ring and bright aluminum sheet both pass through on the post terminal, seal ring is used for realizing the seal between bright aluminum sheet and welding plate, and the vent groove is used for the vent groove. And the vent groove is used for releasing the sealing between the sealing ring and the pole. According to the cover plate assembly, the vent groove is formed between the pole and the sealing ring, sealing between the pole and the sealing ring is removed through the vent groove, the false sealing phenomenon is effectively avoided, and the sealing detection accuracy of the cover plate assembly is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field especially is to point to a cover plate subassembly, battery and vehicle. BACKGROUND

[0002] The cover plate subassembly realizes the inside and outside sealing function through the sealing ring to separate the inside of the battery and the outside, prevent the liquid in the battery from overflowing. Therefore, there is a helium detection process for the sealing performance of the cover plate subassembly to detect the inside and outside sealing performance of the cover plate subassembly. The sealing ring is arranged on the pole at present, and the cooperation between the sealing ring and the pole easily leads to the false sealing condition when the cover plate subassembly is helium detected, which leads to the inaccurate sealing detection of the cover plate subassembly. SUMMARY

[0003] In order to solve the above technical problems, the utility model provides a cover plate subassembly, battery and vehicle can avoid the occurrence of false sealing phenomenon of cover plate subassembly, improve the sealing detection accuracy of cover plate subassembly.

[0004] On the one hand, the utility model provides a cover plate subassembly, battery and vehicle, including pole, sealing ring and light aluminum sheet, the pole is provided with the welding plate, the sealing ring and the light aluminum sheet all are set in the pole, the pole with the sealing ring between form the air passage groove, the sealing ring is used for realizing the sealing between the light aluminum sheet and the welding plate, the air passage groove is used for relieving the sealing between the sealing ring and the pole.

[0005] In an embodiment of the utility model, the outer wall surface of the pole is recessed radially inward to form the air passage groove, or the inner wall surface of the sealing ring is protruded radially inward to form the protruding rib, and the air passage groove is formed between the adjacent two protruding ribs and the outer wall surface.

[0006] In an embodiment of the utility model, the air passage groove formed by recessing the outer wall surface radially inward extends to the end face of the pole close to the welding plate along the axial direction, or the air passage groove formed between the adjacent two protruding ribs and the outer wall surface extends to the two end faces of the sealing ring along the axial direction.

[0007] In an embodiment of the utility model, the sealing ring forms a first region along the axial direction, the air passage groove extends to form a second region along the axial direction, the height of the second region is greater than the height of the height region, and the second region covers the first region.

[0008] In an embodiment of the utility model, it further includes upper plastic, the sealing ring includes first sealing part and second sealing part, the first sealing part is used for realizing the sealing between the light aluminum sheet and the welding plate, and the second sealing part is used for realizing the sealing between the upper plastic and the welding plate.

[0009] In one embodiment of the utility model, the lower plastic is arranged between the light aluminum sheet and the welding plate, the light aluminum sheet, the lower plastic, the welding plate and the pole enclose to form a containing cavity, and the first sealing part is arranged in the containing cavity.

[0010] In one embodiment of the utility model, one end of the pole away from the welding plate is provided with a connecting end, the upper plastic is arranged on the pole, the upper plastic is arranged between the connecting end and the light aluminum sheet, and the second sealing part is arranged between the upper plastic and the welding plate.

[0011] In one embodiment of the utility model, the connecting end is connected to the plate, one side of the connecting end away from the pole forms a welding surface, and one end of the pole away from the connecting end is a riveting end riveted to the welding plate.

[0012] On the other hand, a battery is provided, comprising the above-mentioned cover plate assembly.

[0013] In still another aspect, a vehicle is provided, comprising the above-mentioned cover plate assembly or the above-mentioned battery.

[0014] The above technical solution of the utility model has the following advantages compared with the prior art:

[0015] The utility model discloses a pole and sealing ring form a ventilation groove, and the ventilation groove can relieve the sealing between the pole and the sealing ring, so that there is no sealing between the sealing ring and the pole, if the pole and the welding plate are not sealed, the detection result of helium detection is unqualified, the setting of the ventilation groove effectively avoids the occurrence of false sealing phenomenon, and the sealing detection accuracy of the cover plate assembly is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed in the embodiment description will be briefly introduced as follows, and obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.

[0017] Figure 1 It is the explosion view of the cover plate assembly of the utility model;

[0018] Figure 2 It is the top view of the cover plate assembly of the utility model;

[0019] Figure 3 It is Figure 2 the sectional view of A-A in Fig.

[0020] Figure 4 yes Figure 3 A magnified view of a portion of point A in the middle;

[0021] Figure 5 This is a structural schematic diagram of the pole and connecting end of the cover plate assembly of this utility model;

[0022] Figure 6 This is a schematic diagram of the sealing ring structure of the cover plate assembly of this utility model;

[0023] Figure 7 This is a schematic diagram of the sealing ring and pole of the cover plate assembly of this utility model;

[0024] Figure 8 This is a front view of the pole and connecting end of the cover plate assembly of this utility model;

[0025] Figure 9 This is a top view of the pole and connecting end of the cover plate assembly of this utility model.

[0026] Explanation of reference numerals on the accompanying drawings:

[0027] 1. Pole post; 2. Sealing ring; 3. Plain aluminum sheet; 4. Welded plate; 5. Vent groove; 6. Outer wall surface; 7. Inner wall surface; 8. Rib; 9. First sealing part; 10. Lower plastic; 11. Receiving cavity; 12. Connecting end; 13. Upper plastic; 14. Second sealing part; 15. Complete welded surface; 16. First sealing surface; 17. Second sealing surface; 18. Third sealing surface; 19. Explosion-proof valve; 20. Explosion-proof valve protective membrane. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] Example 1

[0030] Reference Figures 1-9 As shown, it includes an electrode post 1, a sealing ring 2, and a light aluminum sheet 3. A welding plate 4 is provided on the electrode post 1. The sealing ring 2 and the light aluminum sheet 3 are both sleeved on the electrode post 1. A venting groove 5 is formed between the electrode post 1 and the sealing ring 2. The sealing ring 2 is used to achieve the seal between the light aluminum sheet 3 and the welding plate 4. The venting groove 5 is used to release the seal between the sealing ring 2 and the electrode post 1.

[0031] The vent groove 5 is formed between the pole post 1 and the sealing ring 2 of the cover plate assembly of the present application, and the sealing between the pole post 1 and the sealing ring 2 can be released through the vent groove 5 to prevent the cover plate assembly from appearing false sealing phenomenon. Specifically, as shown in Figure 4 The sealing ring 2 and the aluminum sheet 3 are sleeved on the pole post 1, and the sealing ring 2 is arranged between the aluminum sheet 3 and the welding plate 4, so that the sealing ring 2 can realize the sealing between the aluminum sheet 3 and the welding plate 4 to prevent the liquid in the battery from overflowing. Further, since the sealing ring 2 is sleeved on the pole post 1 and is in a compressed state after being installed on the cover plate assembly, the sealing ring 2 in the compressed state is easy to be sealed with the pole post 1. The cover plate assembly needs to be detected by helium detection when it is shipped, and under the premise that the sealing ring 2 realizes the sealing between the aluminum sheet 3 and the welding plate 4, if the pole post 1 and the welding plate 4 are not sealed when the sealing ring 2 is in the sealed state, the sealing detection result is qualified, and false sealing phenomenon appears. Since the vent groove 5 is formed between the pole post 1 and the sealing ring 2 of the present application, the sealing between the pole post 1 and the sealing ring 2 can be released through the vent groove 5, so that the sealing ring 2 and the pole post 1 are not in the sealed state, and if the pole post 1 and the welding plate 4 are not sealed, the detection result of the helium detection is unqualified. The setting of the vent groove 5 effectively avoids the occurrence of false sealing phenomenon and improves the sealing detection accuracy of the cover plate assembly. In addition, the vent groove 5 is arranged in a circular array around the axis of the pole post 1, and the setting of the plurality of vent grooves 5 can improve the sealing release effect between the sealing ring 2 and the pole post 1, and also has a redundant effect. When one of the vent grooves 5 fails in some installation scenarios, the remaining vent grooves 5 can still release the sealing between the sealing ring 2 and the pole post 1.

[0032] In one embodiment, the vent groove 5 is formed on the outer wall surface 6 of the pole post 1 by being recessed radially inward, or the convex rib 8 is formed on the inner wall surface 7 of the sealing ring 2 by being protruded radially inward, and the vent groove 5 is formed between the adjacent two convex ribs 8 and the outer wall surface 6.

[0033] The sealing ring 2 is provided with an inner cavity, and the sealing ring 2 is sleeved on the pole post 1 through the inner cavity. Since the sealing ring 2 is in a compressed state, the inner wall surface 7 of the sealing ring 2 abuts against the outer wall surface 6 of the pole post 1, so that the outer wall surface 6 of the pole post 1 and the inner wall surface 7 of the sealing ring 2 are easy to be sealed. Therefore, as shown in Figure 4 and Figure 6 the vent groove 5 is formed on the outer wall surface 6 of the pole post 1 by being recessed radially inward, so that the outer wall surface 6 of the pole post 1 and the inner wall surface 7 of the sealing ring 2 are always in an unsealed state. If the pole post 1 and the welding plate 4 are not sealed, the detection result of the helium detection is unqualified. The setting of the vent groove 5 effectively avoids the occurrence of false sealing phenomenon and improves the sealing detection accuracy of the cover plate assembly. As shown inFigure 7 As shown in the drawings, the inner wall surface 7 of the sealing ring 2 is provided with a plurality of convex ribs 8 protruding inward along the radial direction of the pole 1, and thus, any two adjacent convex ribs 8 and the outer wall surface 6 of the pole 1 form a ventilation groove 5, which keeps the outer wall surface 6 of the pole 1 and the inner wall surface 7 of the sealing ring 2 in an unsealed state at all times. If the pole 1 and the welding plate 4 are not sealed, the detection result of the helium detection is unqualified. The provision of the ventilation groove 5 effectively avoids the occurrence of false sealing and improves the sealing detection accuracy of the cover plate assembly.

[0034] In one embodiment, the ventilation groove 5 formed by the inward radial recess of the outer wall surface 6 extends to the end surface of the pole 1 near the welding plate 4 in the axial direction, or the ventilation groove 5 formed by the adjacent two convex ribs 8 and the outer wall surface 6 extends to both end surfaces of the sealing ring 2 in the axial direction.

[0035] As shown in the drawings, Figure 5 For the case where the ventilation groove 5 is provided on the pole 1, the ventilation groove 5 needs to extend to the end surface of the pole 1 in the axial direction, so that the two ends of the sealing ring 2 are in a communication state, thereby effectively avoiding the occurrence of false sealing during helium detection of the cover plate assembly when the pole 1 and the welding plate 4 are not sealed. For the case where the ventilation groove 5 is provided on the sealing ring 2, the ventilation groove 5 formed by the adjacent two convex ribs 8 and the outer wall surface 6 of the pole 1 extends to both end surfaces of the sealing ring 2 in the axial direction, which is equivalent to that the ventilation groove 5 penetrates through the entire sealing ring 2 in the axial direction of the sealing ring 2, thereby effectively avoiding the occurrence of false sealing during helium detection of the cover plate assembly when the pole 1 and the welding plate 4 are not sealed.

[0036] In one embodiment, the sealing ring 2 is divided into a first region along the axial direction of the pole 1, and the ventilation groove 5 extends to form a second region in the axial direction of the pole 1, the height of the second region is greater than the height of the first region, and the second region covers the first region.

[0037] As shown in the drawings, Figure 4 The sealing ring 2 is arranged on the pole 1, and the axial direction of the sealing ring 2 is arranged along the axial direction of the pole 1. Along the axial direction of the pole 1, the height of the sealing ring 2 is a first height L6, corresponding to the first region; the ventilation groove 5 extends in the axial direction of the pole 1, and the height of the ventilation groove 5 in the axial direction of the pole 1 is a second height L1, corresponding to the second region; the second height of the second region is greater than the first height of the first region (i.e. L1>L6), and the second region covers the first region, which can ensure the ventilation effect of the ventilation groove 5, so that the ventilation groove 5 can effectively release the sealing between the pole 1 and the sealing ring 2. As shown in the drawings, Figure 8 and Figure 9As shown, the width of the vent groove 5 is L2, the depth of the vent groove 5 is L3, the height of the pole 1 is L4, the radial distance between the riveting end of the pole 1 and the bottom of the vent groove 5 is L5, in order to ensure the strength of the pole 1, L3 < L5, and L1 is less than L4. In addition, in order to ensure the exhaust effect of the vent groove 5, L3 ≥ a first threshold value, the first threshold value is preferably 0.1 mm, and L2 ≥ a second threshold value, the second threshold value is preferably 0.5 mm.

[0038] In one of the embodiments, the sealing ring 2 further comprises a first sealing portion 9 and a second sealing portion 14, the first sealing portion 9 is used to realize the sealing between the light aluminum sheet 3 and the welding plate 4, and the second sealing portion 14 is used to realize the sealing between the upper plastic 13 and the welding plate 4.

[0039] As shown in Figure 4 and Figure 6 , the sealing ring 2 is a stepped sealing ring, and the stepped sealing ring 2 comprises a first sealing portion 9 and a second sealing portion 14. The light aluminum sheet 3 and the sealing ring 2 are both arranged on the pole 1, and the first sealing portion 9 of the sealing ring 2 is arranged between the light aluminum sheet 3 and the welding plate 4. Specifically, the sealing ring 2 is provided with a first sealing surface 16 and a second sealing surface 17, and the first sealing surface 16 and the second sealing surface 17 form the first sealing portion 9. Further, when the components of the cover plate assembly are assembled, the compression of the first sealing portion 9 by the light aluminum sheet 3 and the welding plate 4 makes the first sealing portion 9 in a compressed state between the light aluminum sheet 3 and the welding plate 4, so that the first sealing surface 16 abuts against the top surface of the welding plate 4, and the second sealing surface 17 abuts against the bottom surface of the light aluminum sheet 3, thereby realizing the sealing between the light aluminum sheet 3 and the welding plate 4 by the first sealing portion 9 to prevent the liquid in the battery from overflowing. The cover plate assembly comprises the upper plastic 13, and the second sealing portion 14 of the sealing ring 2 is used to realize the sealing between the upper plastic 13 and the welding plate 4, so as to further prevent the liquid in the battery from overflowing.

[0040] In one of the embodiments, the pole 1 is provided with a lower plastic 10, and the lower plastic 10 is arranged between the light aluminum sheet 3 and the welding plate 4. The light aluminum sheet 3, the lower plastic 10, the welding plate 4 and the pole 1 form a containing cavity 11, and the first sealing portion 9 is arranged in the containing cavity 11.

[0041] As shown in Figure 4As shown, the cover plate assembly further comprises a lower plastic 10, which is arranged on the pole 1 and is located between the light aluminum sheet 3 and the welding plate 4. When the components of the cover plate assembly are assembled, the light aluminum sheet 3, the lower plastic 10, the welding plate 4 and the pole 1 form a containing cavity 11 for containing the first sealing part 9 of the sealing ring 2, and the first sealing part 9 is in a compressed state in the containing cavity 11. The first sealing surface 16 and the second sealing surface 17 of the first sealing part 9 realize the sealing between the light aluminum sheet 3 and the welding plate 4, and realize the sealing between the light aluminum sheet 3 and the lower plastic 10 and between the lower plastic 10 and the welding plate 4, so as to prevent the liquid in the battery from overflowing. The lower plastic 10 is made of PP material.

[0042] In one embodiment, the pole 1 is provided with a connecting end 12 away from the welding plate 4, and the upper plastic 13 is arranged on the pole 1 and is located between the connecting end 12 and the light aluminum sheet 3. The second sealing part 14 is arranged between the upper plastic 13 and the welding plate 4.

[0043] As shown in the drawings, Figure 4 The cover plate assembly further comprises an upper plastic 13 arranged on the pole 1. One end of the pole 1 is connected with the welding plate 4, and the pole 1 is provided with a connecting end 12 away from the welding plate 4. In the direction from the connecting end 12 to the welding plate 4, the upper plastic 13, the light aluminum sheet 3 and the lower plastic 10 are arranged on the pole 1 in sequence, so that the upper plastic 13 is located between the connecting end 12 and the light aluminum sheet 3. Further, the stepped sealing ring 2 comprises the first sealing part 9 and the second sealing part 14, and the first sealing part 9 of the sealing ring 2 is arranged between the light aluminum sheet 3 and the welding plate 4. Specifically, the sealing ring 2 is provided with a third sealing surface 18, and the first sealing surface 16 and the third sealing surface 18 form the second sealing part 14. Further, when the components of the cover plate assembly are assembled, the second sealing part 14 is compressed between the lower plastic 10 and the welding plate 4, so that the first sealing surface 16 abuts against the top surface of the welding plate 4, and the third sealing surface 18 abuts against the bottom surface of the lower plastic 10, thereby realizing the sealing between the lower plastic 10 and the welding plate 4 through the second sealing part 14, so as to prevent the liquid in the battery from overflowing. The upper plastic 13 is made of insulating PPS material.

[0044] In one embodiment, the connecting end 12 is connected with the gasket, and a welding surface 15 is formed on the side of the connecting end 12 away from the pole 1. The end of the pole 1 away from the connecting end 12 is a riveting end riveted with the welding plate 4.

[0045] One end of the pole 1 is connected with the tab of the battery cell, and the other end of the pole 1 is connected with the baffle. Specifically, one end of the pole 1 of the application is connected with the tab of the battery cell through the welding plate 4 to realize the connection between the pole 1 and the battery cell; the other end of the pole 1 is connected with the baffle through the connecting end 12 to realize the connection between the battery cells. Further, as shown in Figure 4 the riveting end on the pole 1 of the application is arranged at the lower end of the pole 1, that is, the riveting end on the pole 1 is arranged at the end of the pole 1 away from the connecting end 12 (away from the baffle), that is, the lower end of the pole 1 is riveted with the welding plate 4, and the riveting end is no longer arranged at the top end of the pole 1, so that the side of the connecting end 12 away from the pole 1 forms a complete welding surface 15, that is, the entire side of the connecting end 12 away from the pole 1 is used as a welding surface. At present, the riveting end of the pole 1 is arranged at the top end of the pole 1, which causes the riveting part between the connecting end 12 and the top end of the pole 1 to be unable to serve as a welding surface. In comparison, the application increases the welding area between the connecting end 12 and the baffle and improves the overcurrent capacity of the battery cell. The connecting end 12 is made of aluminum material, the pole 1 is made of copper material, and the connecting end 12 and the pole 1 are welded together by copper-aluminum friction welding, or the welding plate 12 and the pole 1 are compounded together by cold rolling process or hot rolling process to form a copper-aluminum composite plate, and then the copper-aluminum composite plate is processed to form the welding plate 12 and the pole 1 as a whole.

[0046] Embodiment two

[0047] A battery is provided, which includes a plurality of battery cells, each of which includes a battery cell body, a cover plate assembly, and a shell.

[0048] The shell is provided with a receiving cavity, the battery cell body is arranged in the receiving cavity of the shell, the cover plate assembly is arranged at both ends of the shell, the welding end on the cover plate assembly is connected with the tab of the battery cell body, and the connecting end 12 is welded with the corresponding baffle to realize the connection between different battery cells. Since the application is provided with the vent groove 5 on the pole 1, the sealing between the pole 1 and the sealing ring 2 is released through the vent groove 5, which effectively avoids the occurrence of false sealing phenomenon, improves the sealing detection accuracy of the cover plate assembly, further reduces the defect rate of the battery, and improves the quality of the battery.

[0049] In one of the embodiments, the cover plate assembly further includes an explosion-proof valve 19 arranged on the aluminum sheet 3.

[0050] The cover plate assembly is provided with the explosion-proof valve 19, which prevents the shell of the battery from being broken or even exploded. In addition, the explosion-proof valve 19 is provided with an explosion-proof valve protection film 20 to protect the explosion-proof valve 19.

[0051] Embodiment three

[0052] A vehicle is provided, which includes the above-mentioned cover plate assembly or the above-mentioned battery.

[0053] The vehicle comprises a battery, the battery comprises a battery cell, the battery cell comprises a battery cell body, a cover plate assembly and a shell, the shell is provided with a containing cavity, the battery cell body is arranged in the containing cavity of the shell, the cover plate assembly is arranged at two ends of the shell, and a welding end on the cover plate assembly is connected with a tab of the battery cell body; and a connecting end 12 is welded with a corresponding gasket to realize the connection between different battery cells. Since the air vent groove 5 is arranged on the pole 1, the sealing between the pole 1 and the sealing ring 2 is released through the air vent groove 5, the false sealing phenomenon is effectively avoided, the sealing detection accuracy of the cover plate assembly is improved, the battery failure rate is further reduced, the battery quality is improved, and the vehicle quality is further improved.

[0054] It should be noted that the above are only preferred embodiments of the present application and the technical principles applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, re-adjustments and substitutions without departing from the protection scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A cover plate assembly, characterized in that: The device includes an electrode post (1), a sealing ring (2), and a light aluminum sheet (3). A welding plate (4) is provided on the electrode post (1). The sealing ring (2) and the light aluminum sheet (3) are both sleeved on the electrode post (1). A venting groove (5) is formed between the electrode post (1) and the sealing ring (2). The sealing ring (2) is used to achieve a seal between the light aluminum sheet (3) and the welding plate (4). The venting groove (5) is used to release the seal between the sealing ring (2) and the electrode post (1).

2. The cover plate assembly according to claim 1, characterized in that: The ventilation groove (5) is formed by a radial inward recess on the outer wall surface (6) of the pole post (1), or a rib (8) is formed by a radial inward protrusion on the inner wall surface (7) of the sealing ring (2), and the ventilation groove (5) is formed between two adjacent ribs (8) and the outer wall surface (6).

3. The cover plate assembly according to claim 2, characterized in that: The ventilation groove (5) formed by the radial inward indentation on the outer wall surface (6) extends axially to the end face of the pole post (1) near the welding plate (4), or the ventilation groove (5) formed by two adjacent ribs (8) and the outer wall surface (6) extends axially to the two end faces of the sealing ring (2).

4. The cover plate assembly according to claim 1, characterized in that: The sealing ring (2) forms a first region along the axial direction, and the vent groove (5) extends along the axial direction to form a second region. The height of the second region is greater than the height of the first region, and the second region covers the first region.

5. The cover plate assembly according to claim 1, characterized in that: It also includes an upper plastic (13), and the sealing ring (2) includes a first sealing part (9) and a second sealing part (14). The first sealing part (9) is used to achieve the sealing between the light aluminum sheet (3) and the welding plate (4), and the second sealing part (14) is used to achieve the sealing between the upper plastic (13) and the welding plate (4).

6. The cover plate assembly according to claim 5, characterized in that: The electrode post (1) is provided with a lower plastic (10), which is disposed between the light aluminum sheet (3) and the welding plate (4). The light aluminum sheet (3), the lower plastic (10), the welding plate (4) and the electrode post (1) together form a receiving cavity (11), and the first sealing part (9) is disposed in the receiving cavity (11).

7. The cover plate assembly according to claim 5, characterized in that: A connecting end (12) is provided at one end of the pole post (1) away from the welding plate (4). The upper plastic (13) is inserted through the pole post (1) and is disposed between the connecting end (12) and the light aluminum sheet (3). The second sealing part (14) is disposed between the upper plastic (13) and the welding plate (4).

8. The cover plate assembly according to claim 7, characterized in that: The connecting end (12) is the end connected to the plate. The side of the connecting end (12) away from the pole post (1) forms a welding surface (15). The end of the pole post (1) away from the connecting end (12) is a riveting end that is riveted to the welding plate (4).

9. A battery, characterized in that: Includes the cover plate assembly as described in any one of claims 1-8.

10. A vehicle, characterized in that: It includes the cover plate assembly as described in any one of claims 1-8, or the battery as described in claim 9.

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