CN220420724U

CN220420724U - Battery cover body, battery shell, battery and electronic equipment

Info

Publication number: CN220420724U
Application number: CN202322030740.7U
Authority: CN
Inventors: 梁立维; 胡树敏; 马陈冲; 张剑; 欧阳进忠
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2023-07-28
Filing date: 2023-07-28
Publication date: 2024-01-30
Anticipated expiration: 2033-07-28

Abstract

The application discloses a battery cover body, a battery shell, a battery and electronic equipment. The battery cover body comprises a connecting part, a transition part and a protruding part, wherein the connecting part is used for being connected with a shell body of the battery; one end of the transition part is connected with the connecting part; the protruding part is connected with the other end of the transition part, and protrudes in a first direction relative to the connecting part; the projection area of the protruding part in the first direction is S1, and the projection area of the connecting part in the first direction is S2; wherein S1/S2 is more than or equal to 3 and less than or equal to 99.

Description

Battery cover body, battery shell, battery and electronic equipment

Technical Field

The application relates to the technical field of energy storage equipment, and more particularly relates to a battery cover body, a battery shell, a battery and electronic equipment.

Background

In recent years, along with the development of technology, various electronic products gradually enter into thousands of households to become living necessities of people. The electronic products are often provided with batteries, and as the fields of coverage of the electronic products in daily life are wider and wider, the batteries are also widely applied.

The casing of the battery generally includes a case and a cover connected to each other. In general, in a process of pressurizing a battery to charge and discharge, it is necessary to clamp and fix both side surfaces of a battery cover by a clamp, and a clamping plate of the clamp corresponds to the side surfaces of both cover in the thickness direction of the battery, so that the battery can be clamped in the thickness direction by the clamping plate. Therefore, the stress of the battery during formation can be more uniform, and the pole piece of the battery can be tightly attached to the diaphragm.

Since the periphery of the cover body is sealed and fixed with the shell by welding, in order to closely attach the pole piece and the diaphragm during pressurizing, the size of the clamping plate on the clamp needs to be smaller than that of the cover body so that the clamping plate avoids the welding position between the cover body and the shell.

In the prior art, since the cover body is arranged in a flat plate shape, the clamping plate needs to be customized according to the specific size of the battery during pressurizing formation so as to ensure that the clamping plate can avoid the welding position between the cover body and the shell; this results in complicated device replacement and increased battery manufacturing costs.

In view of this, a new solution is needed to solve the above technical problems.

Disclosure of Invention

An object of the present application is to provide a new technical solution of a battery cover, a battery housing, a battery and an electronic device.

According to a first aspect of the present application, there is provided a battery cover comprising:

a connection part for connection with a case body of the battery;

the transition part is connected with the connecting part at one end;

the protruding part is connected with the other end of the transition part and protrudes in a first direction relative to the connecting part;

the projection area of the protruding part in the first direction is S1, and the projection area of the connecting part in the first direction is S2;

wherein S1/S2 is more than or equal to 3 and less than or equal to 99.

Optionally, the connecting portion is annular, and the transition portion is disposed on a side of the connecting portion facing the protruding portion.

Optionally, an angle between the connecting portion and the transition portion is greater than or equal to 90 ° and less than 180 °.

Optionally, the protruding part is in transitional connection with the transitional part through a first arc part, and the transitional part is in transitional connection with the connecting part through a second arc part;

the average thickness of the first arc part is W1, the average thickness of the second arc part is W2, and the average thickness of the connecting part is W3;

wherein, W1/W3 is more than or equal to 70% and less than or equal to 98%, W2/W3 is more than or equal to 70% and less than or equal to 98%.

Optionally, the protruding portion protrudes from the connecting portion in the first direction by a height of 0.1mm to 2mm.

Optionally, the connecting portion, the protruding portion, and the transition portion are integrally formed.

According to a second aspect of the present application, there is provided a battery case comprising:

a case body having a first opening portion;

the cover according to the first aspect,

the cover body is covered on the first opening part;

the connecting portion is suitable for being in sealing connection with the shell body, and the protruding portion is arranged away from the shell body in a protruding mode in a first direction relative to the connecting portion.

Optionally, a projection of the transition portion in the first direction is located at the housing body.

Optionally, the housing body further has a second opening, the first opening and the second opening being disposed opposite to each other along a first direction;

the cover body is provided with two, one of them the cover body lid is located first opening, another the cover body lid is located the second opening.

Optionally, the thickness of the shell body is greater than or equal to 0.05mm.

According to a third aspect of the present application there is provided a battery comprising a battery housing as described in the second aspect.

Optionally, the battery further comprises a pole core and a conductive component, wherein the pole core is led out of a first pole lug and a second pole lug; the shell body and the two cover bodies are enclosed to form an accommodating space, and the pole core, the first pole lug and the second pole lug are arranged in the accommodating space;

the conductive component is in insulating connection with the shell body; the first tab is connected with the conductive component, and the second tab is connected with the shell body.

Optionally, the shell body is provided with a connecting perforation; the conductive assembly comprises a pole, a conductive sheet, a first insulating pad and a second insulating pad, the pole is suitable for penetrating out from the connecting perforation, and the first insulating pad is positioned at one side of the shell body away from the accommodating space and is arranged between the pole and the shell body;

the conducting strip is connected with the pole, the conducting strip is positioned in the accommodating space, and the second insulating pad is arranged between the shell body and the conducting strip; the first tab is connected with the conductive sheet.

According to a fourth aspect of the present application, there is provided an electronic device comprising a battery as described in the third aspect.

The technical scheme that this application adopted can reach following beneficial effect:

in the battery case provided by the embodiment of the application, since the protruding portion is protruding to be provided on the cover body, when the battery applied by the battery case is pressurized, the clamping plate of the clamp can be abutted on the protruding portion of the cover body, so that the contact between the clamping plate and the welding area between the case body and the cover body can be avoided, and the tight contact between the pole piece and the diaphragm inside the battery is ensured. Therefore, when the battery assembled by the battery shell is formed by pressurization, the clamping plate does not need to be customized according to the specific size of the battery, so that the subsequent equipment is convenient to change the shape, and the production cost is reduced.

Further, the projected area S1 of the protruding portion in the first direction and the projected area of the connecting portion in the first direction are set to satisfy: S1/S2 is more than or equal to 3 and less than or equal to 99. This can improve the space utilization of the battery, i.e., the energy density of the battery in a unit space.

Other features of the present application and its advantages will become apparent from the following detailed description of exemplary embodiments of the present application, which proceeds with reference to the accompanying drawings.

Drawings

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

FIG. 1 is a schematic cross-sectional structural view of a battery housing according to one embodiment of the present application;

FIG. 2 is a schematic diagram of a state of stress of a battery housing according to one embodiment of the present application;

FIG. 3 is a schematic view of a partial structure of a battery case according to one embodiment of the present application;

FIG. 4 is a schematic illustration of a partial structure of a battery housing according to one embodiment of the present application;

fig. 5 is a schematic view of a partial structure of a battery case according to an embodiment of the present application;

fig. 6 is a schematic view of the overall structure of a battery according to an embodiment of the present application;

fig. 7 is an exploded view of a battery according to an embodiment of the present application;

fig. 8 is a schematic diagram of an exploded structure of a battery according to an embodiment of the present application;

fig. 9 is a partially cut-away schematic structural view of a battery according to one embodiment of the present application.

Reference numerals illustrate:

1. a battery case; 11. a housing body; 12. a cover body; 120. a boss; 121. a connection part; 122. a transition section; 1201. a first arc portion; 1202. a second arc portion; 101. connecting the through holes; 102. a liquid injection hole; 2. a pole core; 21. a first tab; 22. a second lug; 23. a first adapter; 24. a second adapter; 3. a conductive assembly; 31. a pole; 32. a conductive sheet; 33. a first insulating pad; 34. a second insulating pad; 4. a sealing plug; 5. sealing cover.

Detailed Description

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

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

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

Referring to fig. 1-5, a battery cover is provided according to one embodiment of the present application. The battery cover body comprises a connecting part 121, a transition part 122 and a protruding part 120, wherein the connecting part 121 is used for being connected with the shell body 11 of the battery;

one end of the transition part 122 is connected with the connection part 121;

the protruding portion 120 is connected to the other end of the transition portion 122, and the protruding portion 120 is protruding in the first direction with respect to the connecting portion 121;

the projection area of the protruding portion 120 in the first direction is S1, and the projection area of the connecting portion 121 in the first direction is S2;

wherein S1/S2 is more than or equal to 3 and less than or equal to 99.

The battery cover 12 provided in the embodiment of the present application is composed of a connection portion 121, a transition portion 122, and a protruding portion 120; one end of the transition portion 122 is connected to the protruding portion 120, and the other end of the transition portion 122 is connected to the connecting portion 121. The transition portion 122 has a cylindrical structure with a small height, the protrusion portion 120 is disposed inside the transition portion 122, and the connection portion 121 is disposed outside the transition portion 122.

Alternatively, the connection portion 121 is annular, and the transition portion 122 is disposed on a side of the connection portion 121 facing the protruding portion 120. It can be understood that the annular connecting portion 121 has an inner ring, i.e., the inner side of the connecting portion 121, and an outer ring, i.e., the outer side of the connecting portion 121, and the side of the connecting portion 121 facing the protruding portion 120 is the inner side of the connecting portion 121.

In this cover 12, since the boss 120 is provided to protrude away from the case body 11 in the first direction; therefore, when the battery applied to the battery cover 12 is formed by pressurizing, the clamping plate C of the clamp can be abutted against the boss 120 of the cover 12, so that contact between the clamping plate and the welding area between the case body 11 and the cover 12 can be avoided, and close contact between the pole piece and the diaphragm inside the battery can be ensured.

Therefore, when the battery assembled by the battery cover body 12 is pressurized, the clamping plate does not need to be customized according to the specific size of the battery, so that the subsequent equipment is convenient to change the shape, and the production cost is reduced. F in fig. 2 represents the pressing direction of the clamp plate C.

Specifically, when the cover 12 and the case body 11 are connected, the connecting portion 121 and the case body 11 are welded to each other to realize a sealed connection.

Further, since the projected area S1 of the boss 120 in the first direction and the projected area S2 of the connecting portion 121 in the first direction satisfy: S1/S2 is more than or equal to 3 and less than or equal to 99. This can improve the space utilization of the battery, i.e., the energy density of the battery in a unit space.

In one embodiment, the angle between the connecting portion 121 and the transition portion 122 may be greater than or equal to 90 ° and less than 180 °. As shown in fig. 3, the angle between the connecting portion 121 and the transition portion 122 is 90 °.

It will be appreciated that the angle is the angle between the connecting portion 121 and the transition portion 122 as embodied in the cross-sectional views of fig. 1-3.

Referring to fig. 5, the boss 120 is in transitional connection with the transitional portion 122 through a first arc 1201, and the transitional portion 122 is in transitional connection with the connecting portion 121 through a second arc 1202;

the average thickness of the first arc portion 1201 is W1, the average thickness of the second arc portion 1202 is W2, and the average thickness of the connection portion 121 is W3; the following conditions are satisfied among W1, W2 and W3: W1/W3 is more than or equal to 70% and less than or equal to 98%, W2/W3 is more than or equal to 70% and less than or equal to 98%. The arrangement can avoid the cracking of the cover body 12 in the forming process and prevent the leakage of the subsequent battery.

The average thickness of the first arc portion 1201 is the average value of the maximum thickness and the minimum thickness of the first arc portion 1201, the average thickness of the second arc portion 1202 is the average value of the maximum thickness and the minimum thickness of the second arc portion 1202, and the average thickness of the connecting portion 121 is the average value of the maximum thickness and the minimum thickness of the connecting portion 121. Referring to fig. 3, in one embodiment, the protruding portion 120 protrudes from the connecting portion 121 by a height H of 0.1mm to 2mm in the first direction.

In this specific example, the height H of the protrusion 120 protruding from the connection portion 121 is set to be greater than or equal to 0.1mm and less than or equal to 2mm, which is advantageous in ensuring that the battery can be stably clamped by the clamping plate at the time of press formation.

In one embodiment, the protruding portion 120 is formed on the cover 12 by integrally stamping, or the protruding portion 120 may be formed by bending a plate, and in particular, the plate may be formed into the cover 12 by multiple bending.

In this specific example, the boss 120 is formed on the lid 12 by integral press molding, which is simple and easy to handle.

Referring to fig. 1 to 5, according to another embodiment of the present application, there is provided a battery case 1, the battery case 1 including a case body 11 and a cover 12 as described above, the case body 11 having a first opening portion; the cover 12 is covered on the first opening part;

the connecting portion 121 is adapted to be in sealing connection with the housing body 11, and the protruding portion 120 is provided protruding away from the housing body 11 in a first direction with respect to the connecting portion 121.

In the battery case 1 provided in this embodiment of the present application, due to the adoption of the cover 12, when the applied battery is pressurized, the clamping plate C of the clamp can be abutted against the protruding portion 120 of the cover 12, so that the contact between the clamping plate and the welding area between the case body 11 and the cover 12 can be avoided, and the tight contact between the pole piece and the diaphragm inside the battery is ensured.

Referring to fig. 4, in one embodiment, the projection of the transition portion 122 in the first direction is located on the housing body 11, that is, the inner wall of the transition portion 122 is disposed flush with the inner wall of the housing body 11. The arrangement can improve the space utilization rate inside the battery. It is understood that the inner wall of the transition portion 122 is a side wall of the filter portion 122 facing the inside of the battery, and the inner wall of the case body 11 is a side wall of the case body 11 facing the inside of the battery.

In one embodiment, the case body 11 further has a second opening portion, the first opening portion and the second opening portion being disposed opposite to each other in a first direction; the two cover bodies 12 are provided, one of the cover bodies 12 is covered on the first opening portion, and the other cover body 12 is covered on the second opening portion.

In this specific example, the case body 11 has a first opening portion and a second opening portion that are provided opposite to each other in the first direction; the number of the cover bodies 12 is two;

one of the cover bodies 12 is covered on the first opening part, and the protruding part 120 on the cover body 12 protrudes towards the direction away from the second opening part; the other cover 12 is covered on the second opening, and the protruding portion 120 on the cover 12 protrudes in a direction away from the first opening.

In the battery case 1, the case body 11 has a ring shape with both ends open, that is, the case body 11 has a frame structure with two openings. The case body 11 has a first opening portion and a second opening portion that are disposed opposite to each other in a first direction, which corresponds to a thickness direction of the battery, i.e., a direction a in fig. 1. One of the cover bodies 12 is arranged at the first opening part in a covering manner to seal the first opening part, and the other cover body 12 is arranged at the second opening part in a covering manner to seal the second opening part.

Referring to fig. 3, in one embodiment, the thickness T of the housing body 11 is greater than or equal to 0.05mm.

In this specific example, the thickness T of the case body 11 is set to be 0.05mm or more, so that not only the mechanical strength of the case body 11 can be ensured, but also the case body 11 and the cover 12 can have a sufficient contact area, thereby ensuring the welding yield of the case body 11 and the cover 12.

Referring to fig. 6 to 9, according to another embodiment of the present application, there is provided a battery including the battery case 1 as described above, further including a pole core 2 and a conductive member 3, the pole core 2 having a first tab 21 and a second tab 22 led out; the shell body 11 and the two cover bodies 12 enclose to form an accommodating space, and the pole core 2, the first pole lug 21 and the second pole lug 22 are arranged in the accommodating space;

the conductive component 3 is fixedly connected with the shell body 11, and the conductive component 3 is arranged in an insulating way with the shell body 11; the first tab 21 is connected to the conductive member 3, and the second tab 22 is connected to the case body 11. Alternatively, the battery case 1 may be made of a metal material such as stainless steel, nickel alloy, chrome alloy, or aluminum alloy.

The battery in this embodiment of the present application adopts the battery case 1, and when the battery case is formed by pressurizing, the clamping plate of the clamp can be abutted against the protruding portion 120 of the cover body 12, so that the contact between the clamping plate and the welding area between the case body 11 and the cover body 12 can be avoided, and the tight contact between the pole piece and the diaphragm inside the battery is ensured. Therefore, when the battery assembled by the battery shell is formed by pressurization, the clamping plate does not need to be customized according to the specific size of the battery, so that the subsequent equipment is convenient to change the shape, and the production cost is reduced.

Referring to fig. 6 to 9, in one embodiment, the housing body 11 is provided with a connection through hole 101; the conductive component 3 comprises a pole 31, a conductive sheet 32, a first insulating pad 33 and a second insulating pad 34, wherein the pole 31 is suitable for penetrating out from the connection through hole 101, and the first insulating pad 33 is positioned at one side of the shell body 11 away from the accommodating space and is arranged between the pole 31 and the shell body 11;

the conductive sheet 32 is connected with the pole 31, the conductive sheet 32 is positioned in the accommodating space, and the second insulating pad 34 is arranged between the shell body 11 and the conductive sheet 32; the first tab 21 is electrically connected to the conductive sheet 32.

In this specific example, the pole 31 passes through the first insulating pad 33, the case body 11, the second insulating pad 34, and the conductive sheet 32 in this order from the outside to the inside; it can be understood that the first insulating pad 33, the second insulating pad 34 and the conductive sheet 32 are also provided with connection holes for the pole 31 to pass through.

The cross section of the pole 31 presents a shape similar to a T, and comprises a column body and a column head, the column head is positioned outside the accommodating space, one end of the column body is connected with the column head, the column body is penetrated in the connecting perforation 101, one part of the first insulating pad 33 is clamped between the column head and the shell body 11, and the other part of the first insulating pad 33 is clamped between the column body and the shell body 11; the conductive sheet 32 is located in the receiving space and connected to the other end of the cylinder, alternatively, the other end of the cylinder may be riveted to the conductive sheet 32 by pressing so as to electrically connect the pole 31 and the conductive sheet 32.

The second insulating pad 34 is sandwiched between the case body 11 and the conductive sheet 32, and one side of the conductive sheet 32 abuts against the second insulating pad 34 and the other side is connected to the first tab 21. The first insulating pad 33 and the second insulating pad 34 are disposed between the case body 11 and the conductive member 3 so as to maintain an insulating arrangement between the case body 11 and the conductive member 3, and prevent the case body 11 from directly contacting the conductive member 3 to cause a short circuit of the battery.

In addition, the battery further comprises a sealing plug 4 and a sealing cover 5, wherein the shell body 11 is provided with a liquid injection hole 102, electrolyte is injected into the battery shell 1 through the liquid injection hole 102, after the electrolyte is injected, the sealing plug 4 is plugged into the liquid injection hole 102, then the sealing cover 5 is pressed on the sealing plug 4, and the sealing cover 5 is fixedly connected to the shell body 11 so as to seal the liquid injection hole. Specifically, the sealing cover 5 may be fixedly connected with the case body 11 by welding.

In a specific example, the first electrode may be welded to the conductive sheet 32, and the second electrode may be welded to the case body 11, in such a manner that the electrodes of the battery are led out.

Alternatively, the first electrode may comprise a single first tab 21; alternatively, the first electrode may include a plurality of first tabs 21, and after the plurality of first tabs 21 are folded, the first tabs 21 are first pre-welded, and then the pre-welded first tabs 21 are electrically connected to the conductive assembly 3. Alternatively, the first electrode may include a plurality of first tabs 21 and first connectors 23, and the plurality of first tabs 21 after being folded are welded to the first connectors 23, and then the first connectors 23 are electrically connected to the conductive assembly 3.

Alternatively, the second electrode may comprise a single second electrode ear 22; alternatively, the second electrode may include a plurality of second tabs 22, and the plurality of second tabs 22 are first pre-welded after being folded, and then the pre-welded plurality of second tabs 22 are electrically connected to the case body 11. Alternatively, the second electrode includes a plurality of second tabs 22 and a second adaptor 24, and the second tabs 22 and the second adaptor 24 are welded together, and then the second adaptor 24 is electrically connected to the case body 11.

According to yet another embodiment of the present application, there is provided an electronic device including a battery as described above.

The foregoing embodiments mainly describe differences between the embodiments, and as long as there is no contradiction between different optimization features of the embodiments, the embodiments may be combined to form a better embodiment, and in consideration of brevity of line text, no further description is given here.

Although specific embodiments of the present application have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present application. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present application. The scope of the application is defined by the appended claims.

Claims

1. A battery cover, comprising:

a connection part (121), the connection part (121) being used for connection with a case body (11) of the battery;

a transition portion (122), wherein one end of the transition portion (122) is connected with the connection portion (121);

a protruding portion (120), wherein the protruding portion (120) is connected with the other end of the transition portion (122), and the protruding portion (120) is arranged protruding in a first direction relative to the connecting portion (121);

the projection area of the protruding part (120) in the first direction is S1, and the projection area of the connecting part (121) in the first direction is S2;

wherein S1/S2 is more than or equal to 3 and less than or equal to 99.

2. The battery cover according to claim 1, wherein the connection portion (121) is ring-shaped, and the transition portion (122) is provided on a side of the connection portion (121) facing the protruding portion (120).

3. The battery cover according to claim 1, wherein an angle between the connecting portion (121) and the transition portion (122) is greater than or equal to 90 ° and less than 180 °.

4. The battery cover according to claim 1, wherein the protruding portion (120) is in transitional connection with the transitional portion (122) through a first arc portion (1201), and the transitional portion (122) is in transitional connection with the connecting portion (121) through a second arc portion (1202);

the average thickness of the first arc part (1201) is W1, the average thickness of the second arc part (1202) is W2, and the average thickness of the connecting part (121) is W3;

5. The battery cover according to claim 1, wherein the protruding portion (120) protrudes from the connecting portion (121) by a height of 0.1mm to 2mm in the first direction.

6. The battery cover according to any one of claims 1 to 5, wherein the connecting portion (121), the protruding portion (120), and the transition portion (122) are of an integrally molded structure.

7. A battery case, comprising:

a case body (11), the case body (11) having a first opening;

the cap (12) according to any one of claim 1 to 6,

the cover body (12) is covered on the first opening part;

the connecting portion (121) is adapted to be in sealing connection with the housing body (11), and the protruding portion (120) is provided protruding away from the housing body (11) in a first direction with respect to the connecting portion (121).

8. The battery case according to claim 7, characterized in that a projection of the transition portion (122) in the first direction is located at the case body (11).

9. The battery case according to claim 7, wherein the case body (11) further has a second opening portion, the first opening portion and the second opening portion being disposed opposite to each other in a first direction;

the two cover bodies (12) are arranged, one cover body (12) is covered on the first opening part, and the other cover body (12) is covered on the second opening part.

10. The battery case according to claim 7, wherein the thickness of the case body (11) is greater than or equal to 0.05mm.

11. A battery, characterized in that the battery comprises a battery housing (1) according to any one of claims 7-10.

12. The battery according to claim 11, characterized in that it further comprises a pole piece (2) and a conductive assembly (3), the pole piece (2) leading out a first pole tab (21) and a second pole tab (22); the shell body (11) and the two cover bodies (12) are enclosed to form an accommodating space, and the pole core (2), the first pole lug (21) and the second pole lug (22) are arranged in the accommodating space;

the conductive component (3) is connected with the shell body (11) in an insulating way; the first tab (21) is connected with the conductive component (3), and the second tab (22) is connected with the shell body (11).

13. The battery according to claim 12, characterized in that the casing body (11) is provided with connection perforations (101);

the conductive assembly (3) comprises a pole (31), a conductive sheet (32), a first insulating pad (33) and a second insulating pad (34), wherein the pole (31) is suitable for being penetrated out of the connecting perforation (101), and the first insulating pad (33) is positioned at one side of the shell body (11) away from the accommodating space and is arranged between the pole (31) and the shell body (11);

the conducting strip (32) is connected with the pole (31), the conducting strip (32) is positioned in the accommodating space, and the second insulating pad (34) is arranged between the shell body (11) and the conducting strip (32); the first tab (21) is connected to the conductive sheet (32).

14. An electronic device comprising the battery of any one of claims 11-13.