Cover plate assembly and battery

Abstract

The utility model provides a cover plate assembly and a battery, the cover plate assembly comprises a top cover, a first insulating part and a pole, the top cover is provided with an accommodating hole extending along a first direction, and the accommodating hole is provided with a hole wall; the first insulating part comprises a main body part and a mounting part which are connected with each other in the first direction, the main body part is arranged on the top cover, at least one part of the mounting part is arranged in the accommodating hole and completely covers the hole wall of the accommodating hole, a first mounting hole is formed in the first insulating part, and the first mounting hole penetrates through the main body part and the mounting part in the first direction; the pole penetrates through the first mounting hole; according to the technical scheme, the part, opposite to the hole wall of the accommodating hole in the top cover, of the pole in the accommodating hole can be completely spaced by the mounting part, so that the creepage distance between the pole and the top cover can be increased, and the voltage resistance strength of the cover plate assembly is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field, concretely relates to a cover plate subassembly and battery. BACKGROUND

[0002] Secondary battery is applied to new energy automobile and energy storage, and the end cover of the secondary battery is mainly assembled and made by injection molding process and riveting welding process, with the improvement of the battery voltage platform in the electric vehicle or energy storage system, the voltage resistance requirement of the end cover of the secondary battery is gradually improved, the end cover structure of the secondary battery adopts the form that the upper and lower plastic parts are separated to insulate between the pole of the secondary battery and the end cover, but this setting mode makes the gap between the upper and lower plastic parts be between the pole of the secondary battery and the top cover, and further makes the voltage resistance strength of the end cover of the secondary battery not high. SUMMARY

[0003] The embodiment of the utility model provides a cover plate subassembly and battery, can improve the technical problem that the voltage resistance strength of the end cover of the secondary battery in relevant technology is not high.

[0004] In a first aspect, the embodiment of the utility model provides a cover plate subassembly, comprising:

[0005] The top cover is provided with a receiving hole extending along the first direction, and the receiving hole has a hole wall;

[0006] The first insulating part comprises a main body part and a mounting part connected to each other in the first direction, the main body part is arranged on the top cover, at least a part of the mounting part is arranged in the receiving hole and completely covers the hole wall of the receiving hole, a first mounting hole is arranged on the first insulating part, and the first mounting hole penetrates through the main body part and the mounting part in the first direction; and

[0007] The pole is arranged through the first mounting hole.

[0008] In an embodiment, the cover plate subassembly further comprises a second insulating part, and the second insulating part and the main body part are arranged on opposite sides of the top cover in the first direction respectively;

[0009] A second mounting hole extending along the first direction is arranged through the second insulating part, and the second mounting hole is communicated with the first mounting hole;

[0010] The pole is further arranged through the second mounting hole.

[0011] In an embodiment, the second insulating part is further provided with a groove on the side close to the top cover in the first direction, and the groove is communicated with the second mounting hole;

[0012] Part of the mounting part extends out of the receiving hole and is arranged in the groove.

[0013] In an embodiment, the cover plate assembly further comprises a sealing member, the sealing member is arranged in the recess and between the mounting portion and the second insulating member;

[0014] The sealing member is sealingly connected with the mounting portion, the second insulating member and the pole.

[0015] In an embodiment, the top cover further comprises a mounting groove arranged on a side of the top cover close to the second insulating member in the first direction, the mounting groove is in communication with the receiving hole;

[0016] The second insulating member is arranged in the mounting groove.

[0017] In an embodiment, a dimension of the receiving hole in the first direction is defined as L1, and a dimension of the mounting portion in the first direction is defined as L2; wherein L1 and L2 satisfy: L2≥L1≥0.1L2.

[0018] In an embodiment, L1 and L2 further satisfy:

[0019] 5mm≥L1≥0.2mm; and

[0020] 5mm≥L2≥0.2mm.

[0021] In an embodiment, a dimension of the main body portion in the first direction is not less than a dimension of a portion of the top cover in the first direction where no mounting groove is arranged.

[0022] In an embodiment, the pole comprises:

[0023] a pole body extending in the first direction and penetrating the first mounting hole and the second mounting hole;

[0024] a first protrusion connected with one end of the pole body in the first direction; and

[0025] a second protrusion connected with the other end of the pole body in the first direction.

[0026] In the first direction, at least a portion of the main body portion is located between the first protrusion and the top cover, and at least a portion of the second insulating member is located between the second protrusion and the top cover.

[0027] In an embodiment, the cover plate assembly further comprises a conductive portion, the conductive portion is arranged on a side of the second insulating member away from the top cover in the first direction, a third mounting hole extending in the first direction is arranged through the conductive portion, the third mounting hole is in communication with the second mounting hole, and the pole body further penetrates the third mounting hole;

[0028] In the first direction, at least a portion of the conductive portion is located between the second protrusion and the second insulating member.

[0029] In an embodiment, the second insulating member is provided with a receiving groove on a side of the second insulating member away from the cover plate in the first direction;

[0030] The conductive part is arranged in the accommodating groove.

[0031] In a second aspect, the utility model discloses a battery, including the cover plate subassembly.

[0032] The embodiment of the utility model has the advantages of:

[0033] In the technical scheme of the application, the first insulating part is arranged between the pole and the top cover to realize insulation between the pole and the top cover, and since the mounting part on the first insulating part completely covers the hole wall of the accommodating hole, the part of the pole in the accommodating hole opposite to the hole wall of the accommodating hole on the top cover can be completely spaced by the mounting part, that is, there is no gap between the pole and the top cover, and thus the creepage distance between the pole and the top cover can be increased to improve the voltage resistance strength of the cover plate subassembly. BRIEF DESCRIPTION OF DRAWINGS

[0034] 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 for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0035] Figure 1 It is the three-dimensional schematic view of the cover plate subassembly provided by the embodiment of the utility model;

[0036] Figure 2 It is the exploded schematic view of the cover plate subassembly provided by the embodiment of the utility model;

[0037] Figure 3 It is the cross-sectional schematic view of the cover plate subassembly provided by the embodiment of the utility model;

[0038] Figure 4 It is the enlarged schematic view of A in Fig. Figure 3

[0039] Figure 5 It is the enlarged schematic view of A in Fig. Figure 3

[0040] Figure 6 It is the assembly schematic view of the top cover and the first insulating part provided by the embodiment of the utility model.

[0041] MARK NO.

[0042] ​​1, top cover; 101, first mounting surface; 102, second mounting surface; 103, receiving hole; 1031, hole wall; 104, mounting groove; 2, first insulating member; 21, main body portion; 22, mounting portion; 221, second surface; 201, first mounting hole; 3, pole; 31, pole body; 32, first protrusion; 33, second protrusion; 4, second insulating member; 401, second mounting hole; 402, groove; 4021, first surface; 403, accommodating groove; 5, sealing member; 6, conductive portion; 601, third mounting hole. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. In addition, it should be understood that the specific embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, the positional words such as "upper" and "lower" generally refer to the upper and lower positions of the device in the actual use or working state, and specifically refer to the direction of the drawing surface in the drawings; and "inner" and "outer" refer to the outline of the device.

[0044] The present application provides a cover plate assembly, Figures 1 to 6 for some embodiments of the present application. As shown in the drawings, the X direction in the drawings is the first direction, and the first direction X is described below.

[0045] Please refer to Figures 1 to 3 In some embodiments of the present application, the cover plate assembly comprises a top cover 1, and a receiving hole 103 extending along the first direction X is provided through the top cover 1; wherein the receiving hole 103 on the top cover 1 is configured to pass through the pole 3.

[0046] In some embodiments of the present application, the cover plate assembly further comprises a first insulating member 2 and a pole 3, the first insulating member 2 comprises a main body portion 21 and a mounting portion 22 connected to each other in the first direction X, the main body portion 21 is arranged on the top cover 1, at least a part of the mounting portion 22 is arranged in the receiving hole 103, the first insulating member 2 is provided with a first mounting hole 201, the first mounting hole 201 penetrates the main body portion 21 and the mounting portion 22 in the first direction X; that is, in this embodiment, the pole 3 passes through the first mounting hole 201 to complete the assembly of the top cover 1, the first insulating member 2 and the pole 3, and at the same time, the mounting portion 22 of the first insulating member 2 is located in the receiving hole 103 and separates the pole 3 from the top cover 1, so as to meet the insulation requirement between the pole 3 and the top cover 1.

[0047] In some embodiments of the present application, the accommodation hole 103 has a hole wall 1031, and the mounting portion 22 completely covers the hole wall 1031 of the accommodation hole 103; that is, the part of the pole 3 in the accommodation hole 103 opposite the hole wall 1031 of the accommodation hole 103 on the top cover 1 can be completely spaced by the mounting portion 22, thereby increasing the creepage distance between the top cover 1 and the pole 3.

[0048] In the technical solution of the present application, the first insulating member 2 is arranged between the pole 3 and the top cover 1 to achieve insulation between the pole 3 and the top cover 1, and because the mounting portion 22 on the first insulating member 2 completely covers the hole wall of the via hole 103, the part of the pole 3 in the via hole 103 opposite the hole wall of the via hole 103 on the top cover 1 can be completely spaced by the mounting portion 22, that is, there is no gap between the pole 3 and the top cover 1, thereby increasing the creepage distance between the pole 3 and the top cover 1 to improve the voltage withstand strength of the cover plate assembly.

[0049] It should be noted that the creepage distance refers to the shortest distance between two conductive parts along the surface of the insulating material, and the voltage withstand strength refers to the highest electric field strength that the insulating material can withstand without breakdown.

[0050] In addition, the arrangement position of the main body portion 21 on the top cover 1 is not limited, and in some embodiments of the present application, the top cover 1 includes a first mounting surface 101 and a second mounting surface 102 opposite in the first direction X, the first mounting surface 101 faces the battery cell, and the main body portion 21 on the first insulating member 2 can be arranged on the first mounting surface 101 or the second mounting surface 102.

[0051] In an embodiment, the mounting portion 22 can be in contact with the hole wall 1031 of the accommodation hole 103; in another embodiment, there is a partial gap or mutual spacing between the mounting portion 22 and the hole wall 1031 of the accommodation hole 103.

[0052] In an embodiment of the present application, the main body portion 21 is arranged on the first mounting surface 101, and because the first mounting surface 101 faces the battery cell, the main body portion 21 is also located between the battery cell and the top cover 1, that is, the main body portion 21 of the first insulating member 2 also spaces the battery cell and the top cover 1, so as to insulate between the battery cell and the top cover 1.

[0053] In another embodiment of the present application, the main body portion 21 is arranged on the second mounting surface 102, and in this embodiment, because at least part of the pole 3 protrudes from the second mounting surface 102 of the top cover 1 and is assembled on the top cover 1, the main body portion 21 can also space the pole 3 and the top cover 1, so as to insulate between the pole 3 and the top cover 1.

[0054] Please refer again to Figures 1 to 3In some embodiments of the present application, the cover plate assembly further comprises a second insulating member 4, the second insulating member 4 and the main body 21 are respectively arranged on opposite sides of the top cover 1 in the first direction X; that is, one of the second insulating member 4 and the main body 21 is arranged on the first mounting surface 101, and the other is arranged on the second mounting surface 102.

[0055] In an embodiment of the present application, the second insulating member 4 is arranged on the first mounting surface 101, and the main body 21 is arranged on the second mounting surface 102; that is, the second insulating member 4 is arranged between the top cover 1 and the battery cell, and the main body 21 is arranged between the top cover 1 and the pole 3, so as to insulate the top cover 1 from the battery cell and the pole 3 from the top cover 1.

[0056] In another embodiment of the present application, the second insulating member 4 is arranged on the second mounting surface 102, and the main body 21 is arranged on the first mounting surface 101; that is, the second insulating member 4 is arranged between the pole 3 and the top cover 1, and the main body 21 is arranged between the top cover 1 and the battery cell, so as to insulate the pole 3 from the top cover 1 and the top cover 1 from the battery cell.

[0057] It can be understood that the cover plate assembly comprises the first insulating member 2 and the second insulating member 4 at the same time, and the insulation between the pole 3 and the top cover 1 and the insulation between the top cover 1 and the battery cell can be realized at the same time, so as to meet the insulation requirement of the cover plate assembly.

[0058] A second mounting hole 401 extending in the first direction X is formed through the second insulating member 4, the second mounting hole 401 is in communication with the first mounting hole 201; the pole 3 also passes through the second mounting hole 401; in this embodiment, the pole 3 passes through the first mounting hole 201 and the second mounting hole 401 at the same time, so that one end of the pole 3 in the first direction X is connected with the battery cell, and the other end in the first direction X can be exposed from the top cover 1 to be connected with external equipment.

[0059] In some embodiments of the present application, the second insulating member 4 is further provided with a groove 402 on the side close to the top cover 1 in the first direction X, the groove 402 is in communication with the second mounting hole 401; wherein a part of the mounting portion 22 extends out of the accommodation hole 103 and is located in the groove 402; that is, in this embodiment, the size of the mounting portion 22 in the first direction X is increased, so that the creepage distance between the top cover 1 and the pole 3 is lengthened, and the withstand voltage strength of the cover plate assembly is improved.

[0060] It can be understood that, due to the increase of the size of the mounting portion 22 in the first direction X, the size of the mounting portion 22 in the first direction X is greater than the size of the first mounting hole 201 in the first direction X, that is, at least part of the mounting portion 22 protrudes from the first mounting surface 101 or the second mounting surface 102 of the top cover 1. In order not to interfere with the installation of the second insulating piece 4 on the top cover 1, a groove 402 is arranged on the second insulating piece 4, which can provide accommodation space for the part of the mounting portion 22 protruding from the first mounting hole 201, thereby ensuring the normal installation of the second insulating piece 4 and the top cover 1.

[0061] In some embodiments of the present application, the cover plate assembly further comprises a sealing piece 5 arranged in the groove 402; wherein the sealing piece 5 is configured to seal the gap between the mounting portion 22 and the second insulating piece 4; in this embodiment, the sealing piece 5 has elasticity, and when the first insulating piece 2, the second insulating piece 4 and the top cover 1 are assembled, the mounting portion 22 and the second insulating portion extrude the sealing piece 5, so that the sealing piece 5 deforms to seal the gap between the mounting portion 22 and the second insulating piece 4.

[0062] In some embodiments of the present application, the sealing piece 5 is made of acid and alkali resistant, high temperature resistant elastic material.

[0063] Please refer to Figures 4 to 5 In some embodiments of the present application, the sealing piece 5 is simultaneously sealed and connected with the mounting portion 22, the second insulating piece 4 and the pole 3, that is, the sealing piece 5 seals the gap between the mounting portion 22, the second insulating piece 4 and the pole 3.

[0064] In some embodiments of the present application, the second insulating piece 4 comprises a first surface 4021 forming a groove wall of the groove 402, and the mounting portion 22 comprises a second surface 221 facing the first surface 4021 in the first direction X; the sealing piece 5 is arranged between the first surface 4021 and the second surface 221; that is, in the first direction X, the second insulating piece 4, the sealing piece 5 and the first insulating piece 2 are arranged in sequence, and when the cover plate assembly is assembled, the first insulating piece 2 and the second insulating piece 4 extrude the sealing piece 5 in the first direction X, so that the sealing piece 5 is firmly attached to the first surface 4021 and the second surface 221 respectively, thereby ensuring the sealing between the mounting portion 22 and the second insulating piece 4 and the pole 3.

[0065] In some embodiments of the present application, the top cover 1 further comprises a mounting groove 104 on the side close to the second insulating piece 4 in the first direction X, and the mounting groove 104 is in communication with the accommodation hole 103; wherein the second insulating piece 4 is arranged in the mounting groove 104; that is, in this embodiment, the mounting groove 104 can limit the second insulating piece 4 to limit the movement of the second insulating piece 4 in the direction perpendicular to the first direction X.

[0066] In some embodiments of the present application, the top cover 1 is provided with a mounting groove 104 on the second mounting surface 102.

[0067] Wherein, since the second insulating piece 4 is located in the mounting groove 104, compared with the second insulating piece 4 being directly arranged on the second mounting surface 102, the distance between the second insulating piece 4 and the first insulating piece 2 in the first direction X is closer, and on the basis of the dimension of the main body part 21 in the first direction X being unchanged, the dimension of the main body part 21 extending into the recess 402 is longer; meanwhile, since the region of the top cover 1 provided with the mounting groove 104 has a smaller dimension in the first direction X, the creepage distance between the pole 3 and the top cover 1 is increased again, so as to improve the voltage resistance strength of the cover plate assembly.

[0068] In some embodiments of the present application, the dimension of the accommodating hole 103 in the first direction X is L1, and the dimension of the mounting part 22 in the first direction X is L2; wherein, L1 and L2 satisfy: L2≥L1≥0.1L2; in this embodiment, L1 and L2 satisfy this interval range, so that the mounting part 22 can separate the part of the pole 3 in the accommodating hole 103 opposite to the hole wall 1031 of the accommodating hole 103, thereby increasing the creepage distance between the pole 3 and the top cover 1; if L1 is less than 0.1L2, the strength of the top cover 1 may not be enough.

[0069] In some embodiments of the present application, L1 also satisfies 5mm≥L1≥0.2mm; if L1 is greater than 5mm, there may be a case that the top cover 1 is not easy to be processed and formed; in addition, if L1 is less than 0.2mm, the strength of the top cover 1 may not be enough.

[0070] In some embodiments of the present application, L2 also satisfies 5mm≥L2≥0.2mm; if L2 is greater than 5mm, there may be a case that the first insulating piece 2 is not easy to be processed and formed; in addition, since the dimension L1 of the accommodating hole needs to be less than L2, if L2 is less than 0.2mm, the strength of the top cover 1 may not be enough.

[0071] In some embodiments of the present application, L1 and L2 simultaneously satisfy L2≥L1≥0.1L2, 5mm≥L1≥0.2mm and 5mm≥L2≥0.2mm; on the basis of ensuring the structural strength of the top cover 1, the top cover 1 and the first insulating piece 2 are also easy to be processed and formed; in addition, the mounting part 22 can separate the part of the pole 3 in the accommodating hole 103 opposite to the hole wall 1031 of the accommodating hole 103, thereby increasing the creepage distance between the pole 3 and the top cover 1.

[0072] Please refer to Figure 6In some embodiments of the present application, the dimension of the main body 21 in the first direction X is not less than the dimension of the portion of the top cover 1 which is not provided with the mounting groove 104 in the first direction X; wherein the dimension of the main body 21 in the first direction X is D2, the dimension of the portion of the top cover 1 which is not provided with the mounting groove 104 in the first direction X is D1, and D2≥D1; in this way, the creepage distance between the pole 3 and the top cover 1 can be increased, so as to improve the voltage resistance strength of the cover plate assembly.

[0073] In some embodiments of the present application, the pole 3 comprises a pole body 31, a first protrusion 32 and a second protrusion 33; the pole body 31 extends along the first direction X and passes through the first mounting hole 201 and the second mounting hole 401; the first protrusion 32 is connected to one end of the pole body 31 in the first direction X; the second protrusion 33 is connected to the other end of the pole body 31 in the first direction X. In the first direction X, at least part of the first insulating piece 2 is located between the first protrusion 32 and the top cover 1, and at least part of the second insulating piece 4 is located between the second protrusion 33 and the top cover 1.

[0074] That is, in this embodiment, when the pole 3 is assembled between the first insulating piece 2 and the second insulating piece 4, the first protrusion 32 and the second protrusion 33 can stop the first insulating piece 2 and the second insulating piece 4 in the first direction X, so as to fix the second insulating piece 4, the top cover 1 and the first insulating piece 2 firmly.

[0075] In some embodiments of the present application, the cover plate assembly further comprises a conductive part 6; the conductive part 6 is arranged on the side of the second insulating piece 4 which is away from the top cover 1 in the first direction X; the conductive part 6 is provided with a third mounting hole 601 which extends along the first direction X and communicates with the second mounting hole 401; the pole body 31 also passes through the third mounting hole 601; in the first direction X, at least part of the conductive part 6 is located between the second protrusion 33 and the second insulating piece 4.

[0076] In some embodiments of the present application, the pole 3 is riveted to the conductive part 6 through the third mounting hole 601, and the conductive part 6 is located on the second insulating piece 4, so that the overall structure of the cover plate assembly is fixed firmly and the adjacent components are tightly fitted; the current inside the battery can be conducted to the conductive part 6 through the pole 3, and the second insulating piece 4 can also separate the conductive part 6 and the top cover 1 to realize the insulation between the conductive part 6 and the top cover 1.

[0077] In some embodiments of the present application, the conductive part 6 is an aluminum block.

[0078] In some embodiments of the present application, the second insulating piece 4 is further provided with a receiving groove 403 on the side close to the conductive part 6, and the conductive part 6 is correspondingly assembled into the receiving groove 403.

[0079] The utility model discloses still a kind of battery, including cover plate subassembly, cover plate subassembly is as above. Since the battery adopts all technical solutions of above-mentioned all embodiments, thus at least have the beneficial effects brought by the technical scheme of above-mentioned embodiment, here no longer one by one elaboration.

[0080] The above embodiments of the present application are described in detail, and the principles and implementation methods of the present application are described by applying specific examples. The above embodiment descriptions are only used to help understand the method and core idea of the present application. Meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation method and application range will be changed. In summary, the content of this specification should not be understood as a limitation of the present application.

Claims

1. A cover plate assembly, characterized in that, include: A top cover, wherein a receiving hole extending in a first direction is provided on the top cover, and the receiving hole has a wall; A first insulating member includes a main body portion and a mounting portion interconnected in the first direction. The first insulating member is disposed on the top cover. At least a portion of the mounting portion is disposed within the receiving hole and completely covers the hole wall of the receiving hole. The first insulating member has a first mounting hole that penetrates the main body portion and the mounting portion in the first direction. A pole post, wherein the pole post passes through the first mounting hole; The cover assembly further includes a second insulating member, and the second insulating member and the main body are respectively disposed on opposite sides of the top cover in the first direction; The second insulating member has a second mounting hole extending along the first direction, and the second mounting hole communicates with the first mounting hole; The pole post is also provided with the second mounting hole.

2. The cover plate assembly according to claim 1, characterized in that, The second insulating member also has a groove on the side near the top cover in the first direction, and the groove communicates with the second mounting hole; A portion of the mounting portion extends from the receiving hole and is located within the groove.

3. The cover plate assembly according to claim 2, characterized in that, The cover plate assembly further includes a sealing element disposed within the groove and located between the mounting portion and the second insulating element; The sealing element is simultaneously and sealingly connected to the mounting part, the second insulating element, and the pole post.

4. The cover plate assembly according to claim 2, characterized in that, The top cover is further provided with a mounting groove on the side near the second insulating member in the first direction, and the mounting groove communicates with the receiving hole; The second insulating element is disposed within the mounting groove.

5. The cover plate assembly according to claim 4, characterized in that, The dimension of the receiving hole in the first direction is defined as L1, and the dimension of the mounting part in the first direction is defined as L2; ​​wherein, L1 and L2 satisfy: L2≥L1≥0.1L2.

6. The cover plate assembly according to claim 5, characterized in that, L1 and L2 also satisfy: 5mm ≥ L1 ≥ 0.2mm; and 5mm≥L2≥0.2mm.

7. The cover plate assembly according to claim 4, characterized in that, The dimension of the main body in the first direction is not less than the dimension of the portion of the top cover without the mounting groove in the first direction.

8. The cover plate assembly according to claim 1, characterized in that, The pole includes: The pole body extends along the first direction and is respectively provided with the first mounting hole and the second mounting hole; The first protrusion is connected to one end of the pole body in the first direction; and The second protrusion is connected to the other end of the pole body in the first direction; In the first direction, at least a portion of the main body is located between the first protrusion and the top cover, and at least a portion of the second insulating member is located between the second protrusion and the top cover.

9. The cover plate assembly according to claim 8, characterized in that, The cover plate assembly further includes a conductive part, which is disposed on the side of the second insulating member away from the top cover in the first direction. A third mounting hole extending along the first direction is provided through the conductive part, and the third mounting hole communicates with the second mounting hole. The pole body also passes through the third mounting hole. In the first direction, at least a portion of the conductive portion is located between the second protrusion and the second insulating member.

10. The cover plate assembly according to claim 9, characterized in that, The second insulating member has a receiving groove on the side facing away from the cover plate in the first direction; The conductive part is disposed within the receiving groove.

11. A battery, characterized in that, Includes the cover plate assembly as described in any one of claims 1 to 10.

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