阅读说明：本技术 电池壳体及电池 (Battery case and battery ) 是由 章辉 彭宁 于 2021-08-24 设计创作，主要内容包括：本发明提供一种电池壳体及电池,电池壳体包括壳体本体和转接件,壳体本体包括底壳和壳盖组件,底壳包括相连的底壁和环形的侧壁,侧壁的背离底壁的一端具有开口,壳盖组件盖设在开口的端面上,壳盖组件包括壳盖,壳盖和底壳电性绝缘；壳体本体的外壁面上设置有凹陷部,至少部分转接件位于凹陷部内,转接件与壳盖和底壳中的一个电性连接,且与壳盖和底壳中另一个电性绝缘。凹陷部减小了转接件给电池壳体带来的厚度,从而使得电池壳体的整体厚度降低,提高了电池的能量密度。因此,本发明提供的电池壳体及电池,可以有效减小电池壳体的整体厚度,提高电池的能量密度。(The invention provides a battery shell and a battery, wherein the battery shell comprises a shell body and a switching piece, the shell body comprises a bottom shell and a shell cover assembly, the bottom shell comprises a bottom wall and an annular side wall which are connected, one end of the side wall, which is far away from the bottom wall, is provided with an opening, the shell cover assembly is covered on the end surface of the opening, the shell cover assembly comprises a shell cover, and the shell cover and the bottom shell are electrically insulated; the outer wall surface of the shell body is provided with a sunken part, at least part of the adapter is positioned in the sunken part, and the adapter is electrically connected with one of the shell cover and the bottom shell and is electrically insulated from the other one of the shell cover and the bottom shell. The concave part reduces the thickness of the adapter for the battery shell, so that the overall thickness of the battery shell is reduced, and the energy density of the battery is improved. Therefore, the battery shell and the battery provided by the invention can effectively reduce the overall thickness of the battery shell and improve the energy density of the battery.)

1. A battery shell is characterized by comprising a shell body and an adapter, wherein the shell body comprises a bottom shell and a shell cover assembly, the bottom shell comprises a connected bottom wall and an annular side wall, an opening is formed in one end, away from the bottom wall, of the side wall, the shell cover assembly is covered on the end face of the opening, the shell cover assembly comprises a shell cover, and the shell cover and the bottom shell are electrically insulated;

the outer wall surface of the shell body is provided with a sunken part, at least part of the adapter is positioned in the sunken part, and the adapter is electrically connected with one of the shell cover and the bottom shell and is electrically insulated from the other of the shell cover and the bottom shell.

2. The battery housing according to claim 1, wherein the recess includes a first recess, the adaptor includes a first adaptor, the first recess is located on a side of the housing cover facing away from the bottom wall, the first recess is close to an edge of the housing cover, a part of the first adaptor is located in the first recess, and the first adaptor is electrically connected to the housing cover through the first recess.

3. The battery housing according to claim 1, wherein the recess comprises a second recess, the interposer comprises a second interposer, the second recess is located on a side of the bottom wall facing away from the housing cover, the second recess is located near an edge of the bottom wall, a portion of the second interposer is located in the second recess, and the second interposer is electrically connected to the bottom wall through the second recess.

4. The battery housing as recited in any one of claims 1-3, wherein the adapter comprises a first extension, a second extension, and a third extension, the first extension and the third extension being connected by the second extension, the first extension being located in the recess, the second extension fitting against the sidewall.

5. The battery casing as recited in claim 2, wherein an insulator is attached to the sidewall, and the first adapter is electrically insulated from the sidewall by the insulator.

6. The battery case according to claim 5, wherein an end of the insulating member near the case cover protrudes out of the bottom case in a thickness direction of the bottom case.

7. A battery housing according to any of claims 1 to 3, wherein at least the surface of the adaptor in the recess is flush with the outer surface of the housing body;

or, the surface of the adaptor at least positioned in the recess is lower than the outer surface of the shell body.

8. A battery case according to any one of claims 1 to 3, wherein the depression depth of the depression is 0.01mm to 0.15 mm;

and/or the width of the concave part along the circumferential direction of the shell body is 0.5mm-9.5 mm.

9. The battery casing according to any one of claims 1-3, wherein the casing cover assembly further comprises a metal ring, the metal ring is positioned on the surface of the casing cover facing the side of the bottom wall, and the metal ring is electrically insulated from the casing cover by an insulating ring;

the middle of the metal ring is provided with a first through hole, the middle of the insulating ring is provided with a second through hole, an overlapping area is arranged between the first through hole and the second through hole, and part of the shell cover is arranged opposite to the overlapping area.

10. A battery, characterized by comprising at least: a battery cell and the battery casing of any of claims 1-9, wherein the battery casing is wrapped around the outside of the battery cell;

the battery core is provided with a first tab and a second tab, the first tab is electrically connected with the shell cover of the battery shell, and the second tab is electrically connected with the bottom wall of the battery shell.

Technical Field

The embodiment of the invention relates to the technical field of batteries, in particular to a battery shell and a battery.

Background

A button cell is also called a button cell, and refers to a cell with a size similar to a small button, which generally has a larger diameter and a thinner thickness. Button cells have found wide applications in various miniature electronic products due to their small size, such as wearable devices: wireless earphone, sports watch, bracelet, ring isoelectron product.

In the related art, a positive adapter plate and a negative adapter plate are arranged on a battery shell and used for leading out the positive and negative electrodes of a battery so as to supply power to electronic equipment.

However, the interposer increases the overall thickness of the battery case, so that the energy density of the battery is low.

Disclosure of Invention

In view of this, embodiments of the present invention provide a battery case and a battery, which can effectively reduce the overall thickness of the battery case and improve the energy density of the battery.

The embodiment of the invention provides a battery shell, which comprises a shell body and an adapter, wherein the shell body comprises a bottom shell and a shell cover assembly, the bottom shell comprises a bottom wall and an annular side wall which are connected, one end of the side wall, which is far away from the bottom wall, is provided with an opening, the shell cover assembly is covered on the end surface of the opening, the shell cover assembly comprises a shell cover, and the shell cover and the bottom shell are electrically insulated;

the outer wall surface of the shell body is provided with a sunken part, at least part of the adapter is positioned in the sunken part, and the adapter is electrically connected with one of the shell cover and the bottom shell and is electrically insulated from the other one of the shell cover and the bottom shell.

According to the battery shell provided by the embodiment of the invention, the concave part is arranged on the battery shell, the adapter is arranged in the concave part, and part of the adapter is arranged at the concave part due to the fact that the thickness of the battery shell where the concave part is arranged is smaller, so that the space outside the battery is not occupied. The concave part reduces the thickness of the adapter for the battery shell, so that the overall thickness of the battery shell is reduced, and the energy density of the battery is improved.

In some embodiments, which may include the above-mentioned embodiments, the recess includes a first recess, the adaptor includes a first adaptor, the first recess is located on a side of the housing cover away from the bottom wall, the first recess is close to an edge of the housing cover, a part of the first adaptor is located in the first recess, and the first adaptor is electrically connected to the housing cover through the first recess.

Therefore, in the thickness direction of the bottom shell, the first concave part can prevent the first adapter from increasing the thickness of the battery shell, and the energy density of the battery is improved.

In some embodiments, which may include the above-mentioned embodiments, the recess includes a second recess, the interposer includes a second interposer, the second recess is located on a side of the bottom wall facing away from the housing cover, the second recess is close to an edge of the bottom wall, a portion of the second interposer is located in the second recess, and the second interposer is electrically connected to the bottom wall through the second recess.

Therefore, the second concave part can prevent the second adaptor from increasing the thickness of the battery shell along the thickness direction of the bottom shell, and the energy density of the battery is improved.

In some embodiments, which may include the above embodiments, the adapter includes a first extension section, a second extension section, and a third extension section, the first extension section and the third extension section are connected by the second extension section, the first extension section is located in the recess, and the second extension section is attached to the sidewall.

In some embodiments, which may include the above embodiments, an insulating member is attached to the sidewall, and the first adapting member is electrically insulated from the sidewall by the insulating member.

In some embodiments, which may include the above-described embodiments, an end of the insulating member adjacent to the case cover protrudes out of the case in a thickness direction of the case.

In this way, the second extension section in the first adapter is prevented from contacting the side wall, which causes a short circuit.

In some embodiments, which may include the above-described embodiments, a surface of the adaptor at least in the recess is flush with an outer surface of the housing body;

alternatively, at least the surface of the adaptor in the recess is lower than the outer surface of the housing body.

Thus, the adapter is positioned in the concave part, so that the thickness of the battery shell at the concave part is smaller.

In some embodiments, which may include the above embodiments, the depression depth of the depression is 0.01mm to 0.15 mm;

and/or the width of the concave part along the circumferential direction of the shell body is 0.5mm-9.5 mm.

In some embodiments, which may include the above embodiments, the housing cover assembly further includes a metal ring, the metal ring is located on a surface of a side of the housing cover facing the bottom wall, and the metal ring is electrically insulated from the housing cover by an insulating ring;

the middle of the metal ring is provided with a first through hole, the middle of the insulating ring is provided with a second through hole, an overlapping area is arranged between the first through hole and the second through hole, and part of the shell cover is arranged opposite to the overlapping area.

In addition, an embodiment of the present invention further provides a battery, which at least includes: the battery shell is wrapped outside the battery core;

the battery core is provided with a first tab and a second tab, the first tab is electrically connected with the shell cover of the battery shell, and the second tab is electrically connected with the bottom wall of the battery shell.

According to the battery provided by the embodiment of the invention, the concave part is arranged on the battery shell, the adapter is arranged in the concave part, and part of the adapter is arranged at the concave part due to the fact that the thickness of the battery shell where the concave part is arranged is smaller, so that the space outside the battery is not occupied. The concave part reduces the thickness of the adapter for the battery shell, so that the overall thickness of the battery shell is reduced, and the energy density of the battery is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is easy to see that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a battery case provided with an adapter according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a battery case provided with a recess according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of a battery according to an embodiment of the present invention;

fig. 4 is an exploded view of a battery provided in an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a first recessed portion of a battery cover according to an embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view of a first recessed portion of a battery cover according to an embodiment of the present invention;

fig. 7 is an enlarged view of an adaptor according to an embodiment of the present invention.

Description of reference numerals:

10: a housing body;

11: a bottom case;

111: a bottom wall;

112: a side wall;

113: an opening;

114: a metal ring;

12: a shell cover;

121: a through hole;

122: a closure member;

123: a containing groove;

20: an insulating ring;

30: an adapter;

31: a first transfer member;

32: a second adaptor;

30 a: a first extension section;

30 b: a second extension section;

30 c: a third extension section;

40: an insulating member;

50: a recessed portion;

51: a first recess;

60: an electric core;

71: a first through hole;

72: a second through hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The battery shell is provided with a positive pole adapter plate and a negative pole adapter plate, and the positive pole adapter plate and the negative pole adapter plate are used for leading out a positive pole and a negative pole of the battery so as to supply power for the electronic equipment. For example, the interposer may be disposed on an outer surface of the battery case.

However, since the adapter sheet has a certain thickness, after the battery shell is provided with the adapter sheet, the thickness of the position of the battery shell where the adapter sheet is arranged is increased, so that the overall thickness of the battery shell is increased, and the energy density of the battery is reduced.

In order to solve the above problem, this embodiment provides a battery case and battery, through set up the depressed part on battery case, sets up the adaptor in the depressed part, because the thickness of the battery case department at depressed part place is less, sets up partial adaptor in the depressed part department, need not to occupy the outside space of battery. The concave part reduces the thickness of the adapter for the battery shell, so that the overall thickness of the battery shell is reduced, and the energy density of the battery is improved.

As shown in fig. 1, the present embodiment provides a battery case, which includes a case body 10 and an adaptor 30, wherein the case body 10 serves as an outer envelope of the battery and protects the internal structure of the battery case. The adaptor 30 is used for leading out the positive electrode or the negative electrode of the battery to be connected with external electronic equipment, so as to realize power supply. The material of the adaptor 30 may be a metal material such as nickel or copper, and the material of the adaptor 30 is not limited in this embodiment.

In some embodiments, as shown in fig. 2 to 4, the housing body 10 includes a bottom shell 11 and a housing cover assembly, the bottom shell 11 includes a bottom wall 111 and a ring-shaped side wall 112, the side wall 112 has an opening 113 at an end facing away from the bottom wall 111, and the housing cover assembly covers an end surface of the opening 113.

The cover assembly includes a cover 12, and the cover 12 is electrically insulated from the base 11. The cover 12 and the bottom case 11 may be made of metal such as aluminum or stainless steel, and the material of the cover 12 and the bottom case 11 is not limited in this embodiment. One of the case cover 12 and the bottom case 11 may serve as a positive electrode of the battery, the other of the case cover 12 and the bottom case 11 may serve as a negative electrode of the battery, and the adaptor 30 is electrically connected to the case cover 12 or the bottom case 11 to lead out the positive electrode or the negative electrode of the battery. The adaptor 30 is electrically connected to one of the cover 12 and the base 11 and is electrically insulated from the other of the cover 12 and the base 11. For example, there may be 2 adapters 30, wherein one adapter 30 is electrically connected to the case cover 12 and electrically insulated from the bottom case 11. The other adaptor 30 is electrically connected to the bottom case 11 and electrically insulated from the case cover 12.

The battery case body 10 is provided with a battery cell 60, the battery cell 60 is provided with a positive tab and a negative tab, one tab of the battery cell 60 is connected with the bottom case 11, the other tab of the battery cell 60 is connected with the case cover 12, and the bottom case 11 and the case cover 12 form a positive electrode and a negative electrode of the battery.

The cover assembly further includes a metal ring 114, the metal ring 114 is covered on the end surface of the opening 113 of the bottom cover 11, and the metal ring 114 and the sidewall 112 can be connected by welding. In order to avoid short circuit between the positive electrode and the negative electrode, the cover 12 and the bottom case 11 may be hermetically connected by an insulating ring 20. The insulating ring 20 may be disposed between the metal ring 114 and the housing cover 12, and the metal ring 114 may support the housing cover 12. The cap 12 is thermally fused to the metal ring 114 via the insulating ring 20. In this way, the insulating ring 20 can function as an insulator and a seal.

As shown in fig. 2, a recess 50 is provided on the outer wall surface of the housing body 10, and at least a part of the adaptor 30 is located in the recess 50. By providing the recess 50 on the battery case, the adaptor 30 is disposed in the recess 50, where the thickness of the case body 10 is reduced due to the recess 50. So that the thickness of the battery shell at the position where the adaptor 30 is arranged is reduced, the whole thickness of the battery shell is reduced, and the energy density of the battery is improved.

Specifically, at least a portion of the surface of the adaptor 30 located in the recess 50 is flush with the outer surface of the housing body 10, so that the outer surface of the housing body 10 at the recess 50 is relatively flat, and the adaptor 30 does not protrude from the recess 50 to increase the thickness of the battery housing at the recess 50. In other examples, the surface of at least a portion of the adaptor 30 located in the recess 50 may be lower than the outer surface of the housing body 10.

The depth of the recess 50 may be 0.01mm to 0.15mm, for example, the depth of the recess 50 may be 0.01mm, 0.03mm, 0.05mm, 0.10mm, or 0.15mm, and the present embodiment does not limit the depth of the recess 50. When the depression depth of the depression 50 is less than this range, the depression 50 is too shallow, the thickness of the adaptor 30 at the depression 50 is less reduced, and the energy density of the battery is lower. Further, when the recess depth of the recess 50 is greater than this range, the recess 50 is too deep, and the strength of the case body 10 at the recess 50 is low. When the depth of the recess 50 is 0.01mm to 0.15mm, the influence on the strength of the case body 10 is small, the thickness of the adaptor 30 at the recess 50 is reduced more, and the energy density of the battery is high.

The width of the recess 50 in the circumferential direction of the housing body 10 may be 0.5mm to 9.5mm, for example, the width of the recess 50 in the circumferential direction of the housing body 10 may be 0.5mm, 1.5mm, 3.0mm, 4.5mm, 6.0mm, 7.5mm, or 9.5mm, and the width of the recess 50 in the circumferential direction of the housing body 10 is not limited in this embodiment. When the width of the recess 50 in the circumferential direction of the housing body 10 is smaller than this range, the contact area of the recess 50 and the adaptor 30 is small, and the connection strength between them is low. Further, when the width of the recess 50 in the circumferential direction of the case body 10 is larger than this range, the width of the recess 50 is excessively large, resulting in a low strength of the case body 10. When the width of the recessed portion 50 along the circumferential direction of the housing body 10 is 0.5mm to 9.5mm, the strength of the housing body 10 is high, the contact area between the recessed portion 50 and the adaptor 30 is also large, and the connection strength between the recessed portion 50 and the adaptor 30 is high.

In some embodiments, as shown in fig. 4, the recess 50 may include a first recess 51, the interposer 30 may include a first interposer 31, the first recess 51 is located on a surface of the side of the housing cover 12 facing away from the bottom wall 111, the first recess 51 is close to an edge of the housing cover 12, a portion of the first interposer 31 is located in the first recess 51, and the first interposer 31 is electrically connected to the housing cover 12 through the first recess 51. In the thickness direction of the bottom case 11, the first recess 51 may prevent the first transfer member 31 from increasing in thickness to the battery case, thereby improving the energy density of the battery.

In some embodiments, the recess 50 may include a second recess (not shown), the interposer 30 may include a second interposer 32, the second recess is located on a side of the bottom wall 111 facing away from the housing cover 12, the second recess is located near an edge of the bottom wall 111, a portion of the second interposer 32 is located in the second recess, and the second interposer 32 is electrically connected to the bottom wall 111 through the second recess. In the thickness direction of the bottom case 11, the second recess portion may prevent the second adaptor 32 from increasing the thickness of the battery case, thereby improving the energy density of the battery.

It should be noted that only one of the first recess 51 and the second recess may be provided to avoid an increase in thickness of the battery case caused by one of the adapters 30 in a partial region. Alternatively, the first recess 51 and the second recess may be provided simultaneously, in order to avoid an increase in thickness of the battery housing in the partial region caused by the two adapters 30.

As shown in fig. 5 and 6, the middle of the housing cover 12 is recessed toward the bottom wall 111 to form a receiving groove 123, a through hole 121 is formed in the middle of the receiving groove 123, and the through hole 121 is used for injecting an electrolyte during the battery assembly process. As shown in fig. 4, the sealing member 122 may be disposed in the receiving groove 123 to seal the through hole 121. The sealing member 122 may be connected to the wall of the receiving groove 123 by welding, for example, a welding track between the sealing member 122 and the receiving groove 123 may be a spiral point, a spiral line, an arc line, or the like, and the welding track between the sealing member 122 and the receiving groove 123 is not limited in this embodiment. The first recess 51 may be located outside the receiving groove 123.

As shown in fig. 7, the adaptor 30 may include a first extension 30a, a second extension 30b, and a third extension 30c, the first extension 30a and the third extension 30c are connected by the second extension 30b, the first extension 30a is located in the recess 50, and the second extension 30b fits on the sidewall 112. The second extension 30b may be provided in different lengths in the thickness direction of the battery case to satisfy different sizes of external electronic devices. The second extension 30b is attached to the side wall 112, so that the problem that the battery shell is large in size due to the fact that the distance between the second extension 30b and the side wall 112 is large is avoided. The second extension section 30b is used for connecting with external electronic equipment, and compared with the connection of the first extension section 30a with external electronic equipment, the strength influence on the connection structure between the first extension section 30a and the cover 12 in the connection process is avoided. The third extension 30c may increase a connection area of the second extension 30b with a connection structure on an external electronic device to improve connection stability.

Specifically, the thickness of the adaptor 30 may be 0.08mm to 0.10mm, for example, the thickness of the adaptor 30 is 0.08mm, 0.09mm, or 0.10mm, and the thickness of the adaptor 30 is not limited in this embodiment. When the thickness of the adaptor 30 is less than this range, the thickness of the adaptor 30 is small and the strength is low. When the thickness of the adaptor 30 is larger than this range, the adaptor 30 has a large thickness and a large weight, and light weight and miniaturization of the battery are not utilized. When the thickness of the adapter 30 is 0.08mm-0.10mm, the thickness of the adapter 30 is proper, the strength of the adapter 30 is high, the thickness is thin and light, and the light weight and miniaturization of the battery are facilitated.

The width of the adaptor 30 in the circumferential direction of the housing body 10 may be 0.5mm to 9.5mm, for example, the width of the adaptor 30 in the circumferential direction of the housing body 10 may be 0.5mm, 1.5mm, 3.0mm, 4.5mm, 6.0mm, 7.5mm, or 9.5mm, etc., and the width of the adaptor 30 in the circumferential direction of the housing body 10 is not limited in this embodiment. When the width of the adaptor 30 in the circumferential direction of the housing body 10 is smaller than this range, the width of the adaptor 30 is too small, the attachment area between the adaptor 30 and the recess 50 is small, and the connection strength between the adaptor 30 and the recess 50 is low. Further, when the width of the adaptor 30 in the circumferential direction of the case body 10 is larger than this range, the adaptor 30 is too wide, and weight reduction and miniaturization of the battery are not utilized. When the width of the adaptor 30 along the circumferential direction of the housing body 10 is 0.5mm-9.5mm, the width of the adaptor 30 is appropriate, the contact area between the adaptor 30 and the recess 50 is large, the connection strength between the adaptor 30 and the recess 50 is high, and the light weight and the miniaturization of the battery are facilitated.

The adaptor 30 and the recess 50 may be connected by welding. For example, laser welding may be performed on the side of the first adapter 31 facing away from the housing cover 12, forming a plurality of welding spots. Wherein, the welding tension between the adapter piece 30 and the concave part 50 is more than or equal to 15N. When the welding tension between the adaptor 30 and the recess 50 is less than 15N, the welding strength is too small. When the welding tension between the adapter piece 30 and the concave part 50 is not less than 15N, the welding strength between the adapter piece 30 and the concave part 50 is high, and the adapter piece 30 and the concave part 50 are not easy to separate in the using process.

In order to avoid the second extension 30b in the first adapter 31 contacting the sidewall 112, causing a short circuit. An insulating member 40 may be attached to the sidewall 112, such that the first connecting member 31 is electrically insulated from the sidewall 112 by the insulating member 40. In other examples, the insulating member 40 may be attached to a side of the second extension 30b of the first adapter 31 facing the side wall 112.

Wherein, along the thickness direction of the bottom shell 11, one end of the insulating member 40 close to the shell cover 12 extends out of the bottom shell 11. As shown in fig. 4, a dotted line frame a frames a portion of the insulating member 40 protruding from the bottom case 11. Thus, the first transfer member 31 is prevented from contacting the metal ring 114 to cause a short circuit. In addition, in the use process, the insulation member 40 is set to be longer because the insulation member 40 deforms due to expansion and contraction caused by heat or is extruded to cause deformation in the charging and discharging processes of the battery, so that the short circuit caused by the contact of the first rotating member 31 and the side wall 112 due to the deformation can be avoided.

Specifically, the thickness of the insulating member 40 may be 0.1mm to 0.15mm, for example, the thickness of the insulating member 40 may be 0.1mm, 0.12mm, or 0.15mm, and the thickness of the insulating member 40 is not limited in this embodiment. When the thickness of the insulating member 40 is less than this range, the insulating member 40 is too thin and easily worn to fail. Further, when the thickness of the insulating member 40 is greater than this range, the insulating member 40 is too thick, which is disadvantageous to the miniaturization of the battery. When the thickness of the insulating member 40 is 0.1mm to 0.15mm, the thickness of the insulating member 40 is appropriate, and the insulating member 40 is not easily worn to fail, and is advantageous for miniaturization of the battery.

The height of the portion of the insulating member 40 protruding out of the bottom case 11 may be 0.3mm-0.5mm, for example, the height of the portion of the insulating member 40 protruding out of the bottom case 11 may be 0.3mm, 0.4mm, or 0.5mm, etc., and the present embodiment does not limit the height of the portion of the insulating member 40 protruding out of the bottom case 11. When the height of the portion of the insulating member 40 protruding out of the bottom case 11 is less than this range, it has a poor insulating effect on the first transfer member 31 and the metal ring 114. Further, when the height of the portion of the insulating member 40 protruding out of the bottom case 11 is larger than the range, the insulating member 40 occupies a large volume, which affects the position where the first transfer member 31 is disposed. When the height of the portion of the insulating member 40 extending out of the bottom case 11 is 0.3mm-0.5mm, the height of the portion of the insulating member 40 extending out of the bottom case 11 is proper, the position of the first rotating member 31 is not affected, and the insulating effect between the first rotating member 31 and the metal ring 114 is good.

In some embodiments, the battery cell 60 may be a winding battery cell, specifically, the winding battery cell includes a first pole piece, a second pole piece, and a diaphragm separating the first pole piece and the second pole piece; the first pole piece is provided with a first pole lug which can be arranged on the first pole piece in a welding mode, the second pole piece is provided with a second pole lug which can be arranged on the second pole piece in a welding mode; and in the winding process, the first pole piece, the second pole piece and the diaphragm are wound layer by layer from the winding head end to the same direction, and finally the winding type battery cell is formed.

When the first pole piece is a positive pole piece and the second pole piece is a negative pole piece, the first pole lug is a positive pole lug and the second pole lug is a negative pole lug; or when the first pole piece is a negative pole piece and the second pole piece is a positive pole piece, the first pole lug is a negative pole lug and the second pole lug is a positive pole lug.

One of the tabs may be connected to the case cover 12 and the other tab may be connected to the case 11. The first adapter 31 and the second adapter 32 are respectively connected with the shell cover 12 and the bottom shell 11, so that the positive pole and the negative pole of the battery are respectively led out. When the battery is applied to the electronic device, the first adapter 31 is electrically connected to the positive electrode or the negative electrode of the electronic device, and the second adapter 32 is electrically connected to the negative electrode or the positive electrode of the electronic device, so that the battery supplies power to the electronic device.

As shown in fig. 4, the metal ring 114 has a first through hole 71 in the middle, the insulating ring 20 has a second through hole 72 in the middle, an overlapping area is provided between the first through hole 71 and the second through hole 72, and a part of the case cover 12 is disposed to face the overlapping area. That is, the first through hole 71 and the second through hole 72 are partially overlapped in the thickness direction of the case cover assembly, and the overlapped region is provided to face a part of the case cover 12. Thus, one of the tabs can pass through the first through hole 71 and the second through hole 72 in sequence and then be connected with the shell cover 12; or, a part of the case cover 12 extends into the first through hole 71 and the second through hole 72 to be connected with a tab; or one tab is passed through one of the first through hole 71 and the second through hole 72, and a part of the case cover 12 is passed through the other of the first through hole 71 and the second through hole 72 to connect the case cover 12 and the tab.

In the battery assembling process, for example, the assembled battery is baked to remove water in the battery, and the baking time is 6-12 h; carrying out moisture test on the baked battery, and after the moisture test is qualified; the electrolyte flows into an electrolyte injection machine, the tightness test is carried out on the battery shell, and after the tightness test is qualified, the electrolyte is automatically injected into the battery, wherein the weight of the injected electrolyte is 0.15g-0.21 g; weighing the battery, flowing into a welding station after the battery is weighed to be qualified, and removing residual electrolyte; the through hole 121 on the shell is sealed by laser welding through a sealing piece 122, the welding speed is 400mm/s, and the power is 80%; then the battery flows into a helium detection station for sealing test, after the sealing test is qualified, formation, sorting, self-discharge inspection and the like are sequentially carried out, an insulating part 40 is attached to the side wall 112 after the battery is qualified, laser spot welding is adopted after the first conversion part 31 is attached to the first concave part 51, the first conversion part 31 is connected with the shell cover 12, and welding spots can be 5 welding spots with the diameter of 0.5 mm; then the battery is turned over and welded with a second adapter piece 32; and (4) carrying out an air tightness test on the welded battery, and flowing into a packaging process after the air tightness test is qualified.

It should be noted that the numerical values and numerical ranges related to the embodiments of the present application are approximate values, and there may be a certain range of errors depending on the manufacturing process, and the error may be considered as negligible by those skilled in the art.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.