Battery cap, battery and electronic product

Abstract

The embodiment of the utility model provides a battery cap, a battery and an electronic product. The battery cover cap comprises a cover plate assembly and a battery cover, wherein the cover plate assembly is provided with a first through hole; the insulation part comprises a first insulation part and a second insulation part, at least part of the first insulation part is located in the first through hole, and the second insulation part is arranged on the top surface of the cover plate assembly; the insulating part is provided with a second through hole, and the cover cap assembly penetrates through the second through hole, is riveted to the cover plate assembly and abuts against the first insulating part and the second insulating part.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of battery technology, and more specifically, relate to a battery cap, a battery, and an electronic product. Background Art

[0002] Lithium-ion batteries are rechargeable batteries that rely on the movement of lithium ions between the positive and negative electrodes to work. Due to their small size, light weight, high power, and environmentally friendly characteristics, lithium-ion batteries have been widely used in industrial production and daily life.

[0003] The sealing effect of traditional lithium battery caps is poor, which not only affects the performance and life of the battery, but also may pose a threat to safety.

[0004] In view of this, it is necessary to provide a new technical solution to solve the above technical problems. Utility Model Content

[0005] The purpose of this application is to provide a new technical solution for a battery cap, a battery and an electronic product.

[0006] In a first aspect, the present application provides a battery cap. The battery cap comprises:

[0007] A cover plate assembly, wherein the cover plate assembly is provided with a first through hole;

[0008] an insulating portion, comprising a first insulating portion and a second insulating portion, wherein at least a portion of the second insulating portion is located in the first through hole, and the second insulating portion is disposed on a top surface of the cover plate assembly;

[0009] The cap assembly is provided with a second through hole in the insulating portion, the cap assembly passes through the second through hole and is riveted to the cover plate assembly, and is respectively in contact with the first insulating portion and the second insulating portion.

[0010] Optionally, the cap assembly includes a rivet and a mating piece, the mating piece is provided with a third through hole, the rod of the rivet passes through the third through hole to cooperate with the mating piece and the rivet and the mating piece are riveted together, the mating piece abuts against the first insulating portion, and a side surface of the head of the rivet abuts against the second insulating portion.

[0011] Optionally, a clamping portion is formed on a side of the rod portion away from the head portion, the clamping portion protrudes in a direction perpendicular to the axis of the rod portion, and at least a portion of the clamping portion abuts against an inner wall surface of the third through hole.

[0012] Optionally, the first insulating portion is provided with a first sub-through hole, the longitudinal section of the first sub-through hole is conical, and the matching piece is a structural piece matching with the first sub-through hole.

[0013] Optionally, the taper of the matching piece is greater than the taper of the first sub-through hole.

[0014] Optionally, the hole wall of the first sub-through hole includes a first inclined surface and a second inclined surface connected to the first inclined surface in the axial direction of the first sub-through hole; the taper of the first inclined surface is different from the taper of the second inclined surface.

[0015] Optionally, the outer surface of the mating piece includes a third inclined surface and a fourth inclined surface connected to the third inclined surface along the height direction of the mating piece, the taper of the third inclined surface is different from the taper of the fourth inclined surface, and the third inclined surface cooperates with the first inclined surface, and the fourth inclined surface cooperates with the second inclined surface.

[0016] Optionally, a minimum dimension of an inner wall of the first sub-through hole and an inner wall of the first through hole along a direction perpendicular to the axis of the first through hole is greater than 0.

[0017] Optionally, the cover plate assembly includes a cover plate body and a reinforcement member, the cover plate body includes a plate body and a raised portion, the raised portion is provided on the plate body, and the raised portion is provided with the first through hole;

[0018] One side of the reinforcement is welded to the side inner surface of the protruding portion, and the other side is welded to the upper inner surface of the protruding portion.

[0019] In a second aspect, an embodiment of the present application further provides a battery, wherein the battery comprises the battery cap as described in the first aspect.

[0020] In a second aspect, an embodiment of the present application further provides an electronic product, wherein the electronic product comprises the battery as described in the second aspect.

[0021] According to the embodiment of the present application, a battery cap is provided, which ensures that the battery cap can protect the battery from the external environment and provide electrical insulation to prevent accidental short circuits and other safety issues inside the battery. At the same time, the fixing method of the cap assembly also ensures the stability and sealing reliability of the battery cap.

[0022] Other features and advantages of the present specification will become apparent from the following detailed description of exemplary embodiments of the present specification with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the specification and, together with the description, serve to explain the principles of the specification.

[0024] Figure 1Shown is a structural diagram of a battery cap provided in an embodiment of the present application from one perspective.

[0025] Figure 2 Shown is a structural diagram of the battery cap provided in an embodiment of the present application from another perspective.

[0026] Figure 3 The figure shows the structural breakdown of the battery cap provided in the embodiment of the present application. Figure 1 .

[0027] Figure 4 The figure shows the structural breakdown of the battery cap provided in the embodiment of the present application. Figure 2 .

[0028] Figure 5 Shown is a structural cross-sectional view of a battery cap provided in an embodiment of the present application.

[0029] Description of reference numerals:

[0030] 1. Cover plate assembly; 10. First through hole; 11. Cover plate body; 12. Reinforcement member; 111. Plate body; 112. Protrusion;

[0031] 2. insulating portion; 20. second through hole; 21. first insulating portion; 22. second insulating portion; 211. first sub-through hole; 2111. first inclined surface; 2112. second inclined surface;

[0032] 3. Cap assembly; 31. Rivet; 32. Matching piece; 311. Head; 312. Rod; 3121. Clamping part; 321. Third inclined surface; 322. Fourth inclined surface; DETAILED DESCRIPTION

[0033] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0034] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present application, its application, or uses.

[0035] Techniques and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the techniques and equipment should be considered part of the specification.

[0036] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0037] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0038] An embodiment of the present application provides a battery cap, in which a cap assembly 3 is arranged on the insulating part 2, and the cap assembly 3 is riveted on the insulating part 2, so that the cap assembly 3 can be in close contact with the insulating part 2, thereby improving the sealing between the cover plate assembly 1 and the cap assembly 3.

[0039] Reference Figure 1-Figure 5 The battery cap includes: a cover assembly 1, which is provided with a first through hole 10; an insulating portion 2, including a first insulating portion 21 and a second insulating portion 22, at least a portion of the second insulating portion 22 is located in the first through hole 10, and the second insulating portion 22 is arranged on the top surface of the cover assembly 1; a cap assembly 3, the insulating portion 2 is provided with a second through hole 20, the cap assembly 3 passes through the second through hole 20 and is riveted to the cover assembly 1, and is in contact with the first insulating portion 21 and the second insulating portion 22.

[0040] In the embodiments of this application, refer to Figure 1-Figure 5 The battery cap includes a cover assembly 1, an insulating part 2 and a cap component. The insulating part 2 is located between the cap assembly 3 and the cover assembly 1. The insulating part 2, on the one hand, serves to isolate the cap assembly 3 from the cover assembly 1, and on the other hand, ensures the overall sealing of the battery cap.

[0041] The cover plate assembly 1 is used to be sealed and connected with the open end of the battery housing to cover and protect the battery. For example, the cover plate assembly 1 can be made of steel.

[0042] The insulating part 2 is located inside the battery cap and is used to provide electrical insulation to ensure the safety of battery use. Specifically, the insulating part 2 includes a first insulating part 21 and a second insulating part 22. The first insulating part 21 is filled inside the cover assembly 1 and is in close contact with it, providing basic insulation function to ensure the insulation of the through hole area. The second insulating part 22 is arranged on the top surface of the cover assembly 1, and the cap assembly 3 is arranged on the insulating part 2, which also serves to isolate the cap assembly 3 and the cover assembly 1. Optionally, the first insulating part 21 and the second insulating part 22 can be an integral structural part, or the first insulating part 21 and the second insulating part 22 can be a split structural part.

[0043] The cap assembly 3 passes through the second through hole 20 and is disposed on the insulating portion 2, and is fixedly connected to the cover plate assembly 1 by riveting to form a complete battery cap structure.

[0044] The insulating part 2 is provided with a second through hole 20, and the cap assembly 3 passes through the hole and is in close contact with the insulating part 2. Specifically, the cap assembly 3 abuts against the first insulating part 21 and the second insulating part 22 (i.e., during the riveting process, the cap assembly 3 squeezes the insulating part 2) to ensure the stability, insulation and sealing of the overall structure. The riveting method ensures that the cap assembly 3 will not loosen or fall off, ensuring the safety of battery use. In addition, the riveting method can make the cap assembly 3 fit closely with the insulating part 2, ensuring the sealing of the cap assembly 3 and the cover assembly 1.

[0045] Such a design ensures that the battery cap can protect the battery from the external environment and provide electrical insulation to prevent accidental short circuits and other safety issues inside the battery. At the same time, the fixing method of the cap assembly 3 also ensures the stability and sealing reliability of the battery cap.

[0046] In one embodiment, referring to Figure 3-Figure 5 The cap assembly 3 includes a rivet 31 and a fitting 32, the fitting 32 is provided with a third through hole, the rod 312 of the rivet 31 passes through the third through hole and cooperates with the fitting 32 and the rivet 31 and the fitting 32 are riveted together, the fitting 32 abuts against the first insulating portion 21, and one side surface of the head 311 of the rivet 31 abuts against the second insulating portion 22.

[0047] In this embodiment, the cap assembly 3 is composed of a rivet 31 and a fitting 32. The rivet 31 is a common fastener, generally composed of a stem 312 and a head 311. The stem 312 is a slender portion used to pass through an object or structure to be fixed, while the head 311 is larger and is used to provide sufficient surface area and force to fix the stem 312 during riveting.

[0048] The matching piece 32 is another component used in conjunction with the rivet 31. A third through hole is formed on the matching piece 32, and the size and shape of the hole need to match the rod 312 of the rivet 31, so that the rod 312 of the rivet 31 can smoothly pass through the third through hole.

[0049] In this embodiment, the rivet 31 and the fitting 32 are fixed by riveting. Riveting is an irreversible connection method, which is to flatten or deform the end of the rod 312 of the rivet 31 so that it is tightly connected with the fitting 32, so that the cap assembly 3 and the cover plate assembly 1 are firmly connected.

[0050] The fitting 32 abuts against the first insulating portion 21. Specifically, the fitting 32 abuts against the inner wall of the second through hole 20. This means that the fitting 32 is squeezed against the inner wall of the second through hole 20 during installation, ensuring electrical isolation between the cap assembly 3 and the cover assembly 1. In addition, during the riveting process, the fitting 32 will directly apply force to the insulating portion 2, thereby ensuring the sealing between the cap assembly 3 and the cover assembly 1.

[0051] One side surface of the head 311 of the rivet 31 abuts against the second insulating portion 22. This means that the head 311 of the rivet 31 is tightly matched with the second insulating portion 22 during installation (i.e., the head 311 of the rivet 31 presses the second insulating portion 22). This contact is used to fix the position of the cap assembly 3 on the one hand, and to ensure electrical isolation between the cap assembly 3 and the cover plate assembly 1 on the other hand. In addition, during the riveting process, the rivet 31 and the mating piece 32 will directly apply force to the insulating portion 2, which also ensures the sealing between the cap assembly 3 and the cover plate assembly 1.

[0052] In one embodiment, referring to Figure 3-Figure 5 A clamping portion 3121 is formed on the side of the rod portion 312 away from the head portion 311, and the clamping portion 3121 protrudes in a direction perpendicular to the axis of the rod portion 312, and at least a portion of the clamping portion 3121 abuts against the inner wall surface of the third through hole.

[0053] In this embodiment, a clamping portion 3121 is formed on the side of the rod 312 of the rivet 31 away from the head 311. The clamping portion 3121 protrudes in a direction perpendicular to the axis of the rod 312, that is, the clamping portion 3121 extends from the side of the rod 312 like a small protrusion.

[0054] When the rod 312 of the rivet 31 passes through the third through hole of the fitting 32, at least part of the clamping portion 3121 abuts against the inner wall of the third through hole. This abutting relationship not only increases the connection stability between the rivet 31 and the fitting 32, but also provides additional fixing force, making the entire cap assembly 3 more secure.

[0055] The connection between the rivet 31 and the fitting 32 becomes more stable by the abutment between the clamping portion 3121 and the inner wall of the third through hole. This design not only prevents the rivet 31 from loosening or falling off during use, but also ensures the accurate positioning of the cap assembly 3 on the battery.

[0056] Due to the close contact between the clamping portion 3121 and the inner wall surface of the third through hole, this design can further improve the sealing performance of the cap assembly 3 and the cap assembly 3, and further increase the safety of the battery cap.

[0057] In one embodiment, referring to Figure 3 and Figure 4 The first insulating portion 21 defines a first sub-through hole 211 , the longitudinal section of the first sub-through hole 211 is conical, and the matching piece 32 is a structural piece that matches the first sub-through hole 211 .

[0058] In this embodiment, the first insulating portion 21 defines a first sub-through hole 211 , and the second insulating portion 22 defines a second sub-through hole. The first sub-through hole 211 and the second sub-through hole are connected to form the first through hole 10 .

[0059] A first sub-through hole 211 is provided on the first insulating portion 21. The longitudinal section of the first sub-through hole 211 is conical, which means that the shape of the first sub-through hole 211 gradually changes from one end to the other end, forming a conical channel. Specifically, the channel diameter of the first sub-through hole 211 gradually increases from the upper end to the lower end, that is, the channel of the first sub-through hole 211 is a conical channel that is narrow at the top and wide at the bottom.

[0060] The matching piece 32 is designed as a structural piece that matches the first sub-through hole 211. Since the first sub-through hole 211 is conical, the matching piece 32 has a corresponding shape or design to ensure that it can closely match the first sub-through hole 211. For example, the shape of the matching piece 32 is also similar to a conical structure.

[0061] In this embodiment, the first sub-through hole 211 is in a conical structure, and the shape of the fitting 32 is also in a conical structure that matches the shape of the first sub-through hole 211, wherein the conical design helps to further ensure the tight connection between the fitting 32 and the first insulating part 21, and reduce possible gaps or looseness. This structure can provide additional stability or sealing. In addition, the fitting 32 and the first insulating part 21 are made of different materials, and the conical design also helps to reduce stress or deformation caused by differences in material expansion or contraction.

[0062] In one embodiment, referring to Figure 3-Figure 5 , the taper of the matching piece 32 is greater than the taper of the first sub-through hole 211 .

[0063] In this embodiment, the taper of the fitting piece 32 is greater than the taper of the first sub-through hole 211 , which means that when the fitting piece 32 is inserted into or fitted into the first sub-through hole 211 , the slope of the tapered side surface thereof is steeper.

[0064] Since the fitting piece 32 has a large taper, when the fitting piece 32 is inserted into the first sub-through hole 211, the fitting piece 32 squeezes the inside of the second through hole 20 to a greater extent, so that a tighter fit is formed between the fitting piece 32 and the second insulating portion 22. This tight fit helps to reduce the gap and improve the sealing and connection stability.

[0065] In one embodiment, referring to Figure 4 The hole wall of the first sub-through hole 211 includes a first inclined surface 2111 and a second inclined surface 2112 connected to the first inclined surface 2111 in the axial direction of the first sub-through hole 211; the taper of the first inclined surface 2111 is different from the taper of the second inclined surface 2112.

[0066] In this embodiment, the hole wall of the first sub-through hole 211 is not of a single taper, but is composed of two inclined surfaces of different tapers, namely a first inclined surface 2111 and a second inclined surface 2112 , which are arranged continuously along the axial direction of the first sub-through hole 211 .

[0067] The first inclined surface 2111 has a specific taper, and the second inclined surface 2112 is connected to the first inclined surface 2111 and has a taper different from that of the first inclined surface 2111. This means that the slope or taper of the second inclined surface 2112 is different from that of the first inclined surface 2111, and is steeper or gentler than that of the first inclined surface 2111. For example, referring to the figure, the first inclined surface 2111 is steeper than the second inclined surface 2112.

[0068] The first inclined surface 2111 and the second inclined surface 2112 have different tapers, and different tapers can provide different resistances or guiding effects when the fitting 32 is inserted, thereby ensuring that the fitting 32 can be smoothly and accurately inserted into the first sub-through hole 211 .

[0069] In addition, the first inclined surface 2111 and the second inclined surface 2112 have different tapers. During the riveting process of the cap assembly 3, the extrusion force and degree of the fitting 32 on the inner wall of the second through hole 20 are different. Specifically, as the fitting 32 is inserted, it first contacts the second inclined surface 2112, and the extrusion force at this time is relatively uniform; when the fitting 32 contacts the second inclined surface 2112, the extrusion force will change due to the change in taper. Specifically, if the taper of the second inclined surface 2112 is steeper, the extrusion force will increase rapidly, resulting in a higher stress concentration in this area, so that the fitting 32 and the inner wall of the second through hole 20 fit more closely.

[0070] In one embodiment, referring to Figure 3 and Figure 4 The outer surface of the mating piece 32 includes a third inclined surface 321 and a fourth inclined surface 322 connected to the third inclined surface 321 along the height direction of the mating piece 32. The taper of the third inclined surface 321 is different from the taper of the fourth inclined surface 322, and the third inclined surface 321 cooperates with the first inclined surface 2111, and the fourth inclined surface 322 cooperates with the second inclined surface 2112.

[0071] In this embodiment, the outer surface of the fitting 32 is the surface in contact with the first insulating portion 21. In this description, the outer surface has specific geometric features, specifically, the outer surface includes a third inclined surface 321 and a fourth inclined surface 322. The two inclined surfaces have different tapers. Taper is an angle or slope that describes an inclined surface relative to its bottom or top.

[0072] The third inclined surface 321 cooperates with the first inclined surface 2111, and cooperation generally means that the two surfaces can contact and squeeze each other to improve the sealing between the insulating part 2 and the matching piece 32. The fourth inclined surface 322 cooperates with the second inclined surface 2112. Similarly, the fourth inclined surface 322 and the second inclined surface 2112 contact and squeeze each other, and this cooperation is also to improve the sealing between the insulating part 2 and the matching piece 32.

[0073] The third inclined surface 321 and the fourth inclined surface 322 have different tapers, which means that the two surfaces have different inclinations. This difference can ensure that the fitting 32 can be more accurately positioned in the first sub-through hole 211 during the assembly process between the fitting 32 and the first insulating portion 21 .

[0074] In one embodiment, referring to Figure 5 The minimum dimension D of the inner wall of the first sub-through hole 211 and the inner wall of the first through hole 10 along the direction perpendicular to the axis of the first through hole 10 is greater than 0.

[0075] In this embodiment, the minimum dimension D of the inner wall of the first sub-through hole 211 and the inner wall of the first through hole 10 along the direction perpendicular to the axis of the first through hole 10 is limited, which further ensures the overall sealing of the battery cap.

[0076] Specifically, by ensuring that the gap or distance between the inner wall of the first sub-through hole 211 and the inner wall of the first through hole 10 is within a specific range, the sealing failure problem caused by an excessively large gap can be avoided.

[0077] In addition, by limiting the size between the two inner walls, the electrolyte, gas or other substances inside the battery can be prevented from leaking out through an excessively large gap, thereby ensuring the safety and stability of the battery.

[0078] In one embodiment, referring to Figure 3 -Reference Figure 5 The cover plate assembly 1 includes a cover plate body 11 and a reinforcement member 12, the cover plate body 11 includes a plate body 111 and a raised portion 112, the raised portion 112 is provided on the plate body 111, and the first through hole 10 is provided on the raised portion 112 and the plate body 111;

[0079] One side of the reinforcement member 12 is welded to the side inner surface of the protrusion 112 , and the other side of the reinforcement member 12 is welded to the upper inner surface of the protrusion 112 .

[0080] In this embodiment, the cover plate assembly 1 includes a cover plate body 11 and a reinforcement member 12. The cover plate body 11 includes a plate body 111 and a protrusion 112. The plate body 111 and the protrusion 112 may be integrally formed structural members. The reinforcement member 12 is used to increase the strength and stability of the cover plate assembly 1. One side of the reinforcement member is welded to the side inner surface of the protrusion 112, and the other side is welded to the upper inner surface of the protrusion 112.

[0081] By this welding method, the reinforcement member 12 and the raised portion 112 are firmly connected together to form an integral structure. This connection method can effectively prevent the reinforcement member 12 and the raised portion 112 from moving relative to each other or separating, thereby improving the structural stability of the entire cover plate assembly 1.

[0082] The present application also provides a battery. The battery includes the battery cap as described above. For example, the battery includes but is not limited to a button battery.

[0083] The battery comprises a battery case, a battery cell and a battery cap, wherein at least one end of the battery case is open, the battery cell is arranged inside the battery case, and the battery cap seals the open end of the battery case, and the battery cap is a battery cap of any of the above structures. The battery has the characteristics of reliable sealing and high energy density.

[0084] The embodiment of the present application further provides an electronic product, wherein the electronic product comprises the battery as described above, such as an electronic device including but not limited to headphones, a tablet computer, a wearable device, etc.

[0085] The above embodiments focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0086] Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are only for illustration, not for limiting the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A battery cap, characterized in that: include: A cover plate assembly (1), wherein the cover plate assembly (1) is provided with a first through hole (10); an insulating portion (2), comprising a first insulating portion (21) and a second insulating portion (22), wherein at least a portion of the first insulating portion (21) is located in the first through hole (10), and the second insulating portion (22) is disposed on the top surface of the cover plate assembly (1); A cap assembly (3), wherein the insulating portion (2) is provided with a second through hole (20), the cap assembly (3) passes through the second through hole (20) and is riveted to the cover plate assembly (1), and is in contact with the first insulating portion (21) and the second insulating portion (22).

2. The battery cap according to claim 1, characterized in that: The cap assembly (3) comprises a rivet (31) and a fitting (32); the fitting (32) is provided with a third through hole; the rod (312) of the rivet (31) passes through the third through hole to fit with the fitting (32); the rivet (31) and the fitting (32) are riveted together; the fitting (32) abuts against the first insulating portion (21); and a side surface of the head (311) of the rivet (31) abuts against the second insulating portion (22).

3. The battery cap according to claim 2, characterized in that: A clamping portion (3121) is formed on the side of the rod portion (312) away from the head portion (311), and the clamping portion (3121) protrudes in a direction perpendicular to the axis of the rod portion (312), and at least a portion of the clamping portion (3121) abuts against the inner wall surface of the third through hole.

4. The battery cap according to claim 2 or 3, characterized in that: The first insulating portion (21) is provided with a first sub-through hole (211), the longitudinal section of the first sub-through hole (211) is conical, and the matching component (32) is a structural component matching the first sub-through hole (211).

5. The battery cap according to claim 4, characterized in that: The taper of the matching piece (32) is greater than the taper of the first sub-through hole (211).

6. The battery cap according to claim 4, characterized in that: The hole wall of the first sub-through hole (211) comprises a first inclined surface (2111) and a second inclined surface (2112) connected to the first inclined surface (2111) in the axial direction of the first sub-through hole (211); the taper of the first inclined surface (2111) is different from the taper of the second inclined surface (2112).

7. The battery cap according to claim 6, characterized in that: The outer surface of the matching piece (32) includes a third inclined surface (321) and a fourth inclined surface (322) connected to the third inclined surface (321) in the height direction of the matching piece (32); the taper of the third inclined surface (321) is different from the taper of the fourth inclined surface (322); the third inclined surface (321) matches with the first inclined surface (2111), and the fourth inclined surface (322) matches with the second inclined surface (2112).

8. The battery cap according to claim 4, characterized in that: The minimum dimension of the inner wall of the first sub-through hole (211) and the inner wall of the first through hole (10) along a direction perpendicular to the axis of the first through hole (10) is greater than 0.

9. The battery cap according to claim 1, characterized in that: The cover plate assembly (1) comprises a cover plate body (11) and a reinforcement member (12); the cover plate body (11) comprises a plate body (111) and a raised portion (112); the raised portion (112) is arranged on the plate body (111); and the first through hole (10) is arranged on the raised portion (112) and the plate body (111); One side of the reinforcement member (12) is welded to the side inner surface of the raised portion (112), and the other side is welded to the upper inner surface of the raised portion (112).

10. A battery, characterized in that: The battery comprises the battery cap according to any one of claims 1-9.

11. An electronic product, characterized in that: The electronic product comprises the battery as claimed in claim 10.

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