CN215815976U - Battery with a battery cell - Google Patents
Battery with a battery cell Download PDFInfo
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- CN215815976U CN215815976U CN202122016558.7U CN202122016558U CN215815976U CN 215815976 U CN215815976 U CN 215815976U CN 202122016558 U CN202122016558 U CN 202122016558U CN 215815976 U CN215815976 U CN 215815976U
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- battery
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- tab
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Sealing Battery Cases Or Jackets (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model provides a battery, which comprises a shell, a top cover, a battery cell and a second adapter, wherein the top cover is covered at the upper end of the shell and encloses with the shell to form a cavity; wherein: the bottom shell is electrically connected with the second pole lug, the second adapter comprises a second connecting sheet and a second pin, and the second adapter is connected with the bottom shell through the second connecting sheet; one end of the second pin is connected with the second connecting sheet, and the other end of the second pin extends out of the outer edge of the bottom shell. The utility model can improve the performances of the battery such as stability and the like.
Description
Technical Field
The utility model relates to a battery, and belongs to the field of batteries.
Background
The battery is a common electrochemical energy storage device, and is widely applied to electronic products and other aspects, for example, the button battery is often applied to wearable electronic products, and along with the development of the wearable electronic products, higher and higher requirements are also provided for the performances of the button battery, such as stability and the like. The battery PACK generally refers to the packaging, assembly and the like of a battery, is an indispensable part of the battery, and is an important factor influencing the performance of the battery such as stability and the like, specifically, the battery has a cell and a PACK structure for packaging the cell, the cell comprises a positive plate, a diaphragm, a negative plate, a positive tab connected with the positive plate, and a negative tab connected with the negative plate, the PACK structure is provided with a positive pole adapter (positive PIN) and a negative pole adapter (negative PIN), the positive PIN is electrically connected with the positive tab, the negative PIN is electrically connected with the negative tab, thereby realizing the connection of the positive PIN and the negative PIN as the internal circuit and the peripheral circuit of the battery, however, the current battery PACK structure is not favorable for the performance of the battery such as stability and the like, for example, the common positive PIN and the negative PIN are respectively leads connected with the positive tab and the negative tab, and the defects of the loose setting of the PIN and the negative PIN in the battery PACK exist, affecting the stability and other properties of the battery.
SUMMERY OF THE UTILITY MODEL
The utility model provides a battery which has good performances such as stability and the like and can effectively overcome the defects in the prior art.
The utility model provides a battery, which comprises a shell, a top cover, a battery cell and a second adapter, wherein the top cover is sealed at the upper end of the shell and encloses with the shell to form a cavity, the battery cell is positioned in the cavity, the shell comprises a side wall surrounding the cavity and a bottom shell arranged at the lower end of the side wall, the battery cell is provided with a first tab and a second tab, and the polarities of the first tab and the second tab are opposite; the bottom shell is electrically connected with the second pole lug, the second adapter comprises a second connecting piece and a second pin, and the second adapter is connected with the bottom shell through the second connecting piece; one end of the second pin is connected with the second connecting sheet, and the other end of the second pin extends out of the outer edge of the bottom shell.
According to an embodiment of the present invention, the second connecting piece includes a third connecting portion, a fourth connecting portion, and a transition portion connected between the third connecting portion and the fourth connecting portion, and the third connecting portion is welded to the bottom case; the top surface of the fourth connecting portion is higher than the top surface of the third connecting portion, and/or the bottom surface of the fourth connecting portion is higher than the bottom surface of the third connecting portion.
According to an embodiment of the present invention, the bottom case is further provided with a second insulating layer, the second connecting piece includes a third connecting portion, a fourth connecting portion, and a transition portion connected between the third connecting portion and the fourth connecting portion, the third connecting portion is welded to the bottom case, and the fourth connecting portion is connected to the bottom case through the second insulating layer.
According to an embodiment of the present invention, the top cover includes a first metal sheet, a first insulating sheet and a second metal sheet, the first metal sheet is connected to the upper end of the housing to cover the upper end of the housing, and the second metal sheet is connected to the first metal sheet through the first insulating sheet in an insulating manner; the top cover is provided with a through hole penetrating through the first metal sheet and the second metal sheet, the through hole is communicated with the cavity, the second metal sheet comprises a first connecting part and a second connecting part connected with the first connecting part, the first connecting part is connected with the first insulating sheet, and the second connecting part is arranged at the through hole and seals the through hole; the battery also comprises a first adapter, the first adapter comprises a first connecting sheet and a first pin, one end of the first pin is connected with the first connecting sheet, and the other end of the first pin extends out of the outer edge of the top cover; the second connecting portion is electrically connected with the first tab, and the first adapter is connected with the second connecting portion through the first connecting piece.
According to an embodiment of the utility model, the outer periphery of the first metal sheet is welded to the upper end of the side wall to effect that the top cover closes the upper end of the housing.
According to one embodiment of the utility model, the first connecting piece is welded to the second connecting part, and the first weld mark produced by the welding penetrates the first connecting piece and extends to the 1/3-2/3 thickness of the second connecting part.
According to an embodiment of the present invention, the first adapter is located on a side of the second metal sheet facing away from the cavity.
According to an embodiment of the present invention, the second connecting portion is provided with a liquid injection hole communicating with the cavity, and a sealing sheet sealing the liquid injection hole, the sealing sheet is located on a side of the second connecting portion away from the cavity, the sealing sheet is electrically connected to the first tab through the second connecting portion, and the first connecting sheet is welded to the sealing sheet.
According to an embodiment of the utility model, a first weld mark produced by said welding extends through said first connecting piece and to the thickness of said sealing piece 1/3-2/3.
According to an embodiment of the present invention, a surface of the sealing sheet facing away from the cavity is not higher than a surface of the first connecting portion facing away from the cavity.
According to an embodiment of the present invention, a first insulating layer is disposed on a sidewall of the housing, and at least one of the following characteristics is satisfied: the part of the other end of the first pin extending out of the outer edge of the top cover is a first adapter, the first pin further comprises a first extending part extending to the side wall of the shell, one end of the first extending part is connected with the first connecting piece, the other end of the first extending part is connected with the first adapter, and the first extending part is insulated from the side wall through the first insulating layer; the part that the other end of second pin stretches out the drain pan outer fringe is the second adapter, the second pin still including extending to the second extension of casing lateral wall, the one end of second extension with the second connection piece links to each other, the other end of second extension with the second adapter links to each other, the second extension passes through first insulation layer with the casing lateral wall meets.
According to an embodiment of the present invention, the second pins include a positioning pin and a conductive pin, and a distance from the second adapter of the positioning pin to the top cover is greater than or equal to a distance from the second adapter of the conductive pin to the top cover, and/or a distance from the second adapter of the positioning pin to the top cover is greater than or equal to a distance from the first adapter of the first pin to the top cover.
According to an embodiment of the present invention, the second pins include a positioning pin and a conductive pin, and the positioning pin is located between the conductive pin and the first pin in a projection of the battery perpendicular to a direction from the bottom case to the top cover.
According to an embodiment of the present invention, the second connecting piece includes a third connecting portion, a fourth connecting portion, and a transition portion connected between the third connecting portion and the fourth connecting portion, and the third connecting portion is welded to the bottom case; the top surface of the fourth connecting part is higher than the top surface of the third connecting part, and/or the bottom surface of the fourth connecting part is higher than the bottom surface of the third connecting part; the part of the other end of the first pin extending out of the outer edge of the top cover is a first adapter, and the part of the other end of the second pin extending out of the outer edge of the bottom shell is a second adapter; the second pin includes electrically conductive pin and location pin, in the projection of the direction of casing perpendicular to from drain pan to top cap, the second adapter of location pin is located the first adapter of first pin with between the second adapter of electrically conductive pin to satisfy the contained angle of first line and second line and be alpha, alpha > 30, first line is for crossing the orthographic projection's of top cap central point bisects the straight line of transition portion, the second line is for crossing the orthographic projection's of top cap central point bisects the straight line of the second adapter of location pin.
According to an embodiment of the present invention, the second pin is disposed on the fourth connection portion.
According to an embodiment of the utility model, the second welding mark generated by the welding penetrates through the third connecting part and extends to the 1/3-2/3 thickness of the bottom case.
According to one embodiment of the utility model, α is 60 ≦ 140.
According to an embodiment of the utility model, α is 100 ≦ 125.
According to an embodiment of the present invention, the thickness of the second insulating layer is 0.05mm to 0.1 mm.
According to an embodiment of the utility model, a cross section of the second connecting piece perpendicular to the thickness direction of the second connecting piece is in a shape of a non-complete semicircular ring with an opening.
According to an embodiment of the utility model, the outer edge of the second connecting piece is a circular arc, and the circular arc is substantially concentric with the outer edge of the housing.
According to an embodiment of the present invention, the second adaptor is located on a side of the bottom case facing away from the cavity.
According to an embodiment of the utility model, the device further comprises a second insulation sheet arranged on one side of the top cover, which is far away from the cavity, and an orthographic projection of the second insulation sheet, which is perpendicular to the thickness direction of the top cover, covers an orthographic projection of the top cover, which is perpendicular to the thickness direction of the top cover.
According to an embodiment of the present invention, the first tab is a positive tab, and the second tab is a negative tab.
According to an embodiment of the utility model, the battery is a button battery.
In the utility model, the second adaptor is arranged on the bottom shell of the battery PACK structure through the second connecting sheet and is electrically connected with the second pole lug through the shell, the second pin of the second adaptor extends out of the outer edge of the bottom shell and can be used as a joint with a peripheral circuit, and meanwhile, the second adaptor can play a role in positioning, thereby being beneficial to improving the stability of the battery after being assembled on an electronic product, ensuring the stability of the electrical connection between the second adaptor and the second pole lug, avoiding the occurrence of phenomena of structural fracture and the like of the first adaptor and the second adaptor from the battery PACK, ensuring the stability and other performances of the battery, and ensuring the functional performance of the battery.
Drawings
FIG. 1 is a schematic diagram of a battery according to an embodiment of the present invention;
fig. 2 is a schematic bottom view of a battery according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a bottom case of a battery according to an embodiment of the utility model, which is a front projection perpendicular to a thickness direction of the bottom case;
fig. 4 is a schematic top view of a battery according to an embodiment of the present invention;
fig. 5 is a schematic cross-sectional view of a battery according to an embodiment of the present invention;
fig. 6 is an exploded view of a battery according to an embodiment of the present invention.
Description of reference numerals: 1: a housing; 2: a top cover; 3: a first transfer member; 4: a second adaptor; 5: sealing the sheet; 6: a cavity; 7: a second insulating sheet; 8: a straight portion of the first tab; 9: an electric core; 11: a first insulating layer; 12. a second insulating layer; 13. a third insulating layer; 14. a fourth insulating layer; 15. a bottom case; 21: a first metal sheet; 22: a second metal sheet; 23: a first insulating sheet; 31: a first adapter; 32: a first extension portion; 33: a horizontal portion; 34: a first connecting piece; 41. 41': a second adapter; 42. 42': a second extension portion; 43: a third connecting portion; 44: a fourth connecting portion; 45: a transition section; 221: a first connection portion; 222: a second connecting portion; α: and (4) an included angle.
Detailed Description
The present invention is described in further detail below in order to enable those skilled in the art to better understand the aspects of the present invention. In the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the connection may be direct, indirect via an intermediate medium, or internal connection between two elements. Those skilled in the art will understand what is specifically meant by the present invention. Furthermore, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only, for example, to distinguish components for clarity in explaining/explaining the technical solution, and are not to be construed as indicating or implying any number of technical features or order of significance, etc. The terms "above" and "below" and other terms indicating directions are all based on the side where the top cover is located as the upper side, the side where the bottom cover is located as the lower side, and the outer surface of the cavity wall between the top cover and the bottom cover as the side surface, so as to express the relative positional relationship of the components.
As shown in fig. 1 to 6, the battery of the present invention includes a casing 1, a top cap 2, a battery cell, and a second adaptor 4, wherein the top cap 2 covers an upper end of a side wall and encloses with the casing 1 to form a cavity 6, the battery cell 9 is located in the cavity 6, the casing 1 includes a side wall surrounding the cavity 6 and a bottom casing 15 disposed at a lower end of the side wall, the battery cell 9 has a first tab and a second tab, polarities of the first tab and the second tab are opposite, wherein the bottom casing is electrically connected with the second tab, the second adaptor 4 includes a second connecting piece and a second pin, and the second adaptor 4 is connected with the bottom casing through the second connecting piece; one end of the second pin is connected with the second connecting sheet, and the other end of the second pin extends out of the outer edge of the bottom shell.
Generally, the battery further comprises a first connector 3, the first connector 3 comprises a first connecting piece 34 and a first pin arranged on the first connecting piece 34, the first connector 3 is arranged on the top cover through the first connecting piece 34, one end of the first pin is connected with the first connecting piece 34, and the other end of the first pin extends out of the outer edge of the top cover.
The top cover can be formed by compounding two layers of metal sheets and an insulating sheet in a hot-pressing mode, and the insulating sheet is located between the two layers of metal sheets. In some preferred embodiments, the top cover comprises a first metal sheet 21, a first insulating sheet 23 and a second metal sheet 22, the first metal sheet 21 is connected with the upper end of the shell 1 to realize that the top cover covers the upper end of the shell 1, and the second metal sheet 22 is connected with the first metal sheet 21 in an insulating way through the first insulating sheet 23; the top cover is provided with a through hole penetrating through the first metal sheet 21 and the second metal sheet 22, the through hole is communicated with the cavity 6, the second metal sheet 22 comprises a first connecting part 221 and a second connecting part 222 connected with the first connecting part 221, the first connecting part 221 is connected with the first insulating sheet 23, and the second connecting part 222 is arranged at the through hole and seals the through hole; the first adapter 3 comprises a first connecting sheet 34 and a first pin arranged on the first connecting sheet 34, one end of the first pin is connected with the first connecting sheet 34, and the other end of the first pin extends out of the outer edge of the top cover; the second connection portion 222 is electrically connected to the first tab, and the first junction member 3 is connected to the second connection portion 222 via the first connection tab 34, so that the first junction member 3 is electrically connected to the first tab.
Specifically, the first adaptor 3 is electrically connected to the first tab and is insulated from the second tab, the second adaptor 4 is electrically connected to the second tab and is insulated from the first tab, the first adaptor 3 may be located on one side of the second metal sheet 22 departing from the cavity 6, and the second adaptor 4 may be located on one side of the bottom case departing from the cavity 6. The first metal sheet 21, the first insulating sheet 23 and the second metal sheet 22 are sequentially stacked, so that the first metal sheet 21 and the second metal sheet 22 are connected in an insulating manner through the first insulating sheet 23, the through holes penetrate through the first metal sheet 21 and the first insulating sheet 22, namely the through holes comprise first through holes penetrating through the first metal sheet 21 and second through holes penetrating through the first insulating sheet 23, and the first through holes and the second through holes are communicated with the cavity 6 and are arranged substantially concentrically. Optionally, the diameter of the first through hole is slightly larger than that of the second through hole, and one side of the first insulating sheet 23 close to the second through hole extends downward to form a protruding portion located in the first through hole, the protruding portion is located between the first metal sheet 21 and the second connecting portion 222 of the second metal sheet 22, so that the first metal sheet 21 and the second connecting portion 222 are insulated by the first insulating sheet 23, and the first connecting portion 221 is connected to the first metal sheet 21 by the first insulating sheet 23, i.e., the first connecting portion 221 is also insulated from the first metal sheet 21 by the first insulating sheet 23, so that the first metal sheet 21 is insulated from the second metal sheet 22 by the first insulating sheet 23.
In the present invention, the outer periphery of the top cover can be welded to the upper end of the side wall to seal the top cover to the upper end of the side wall, for example, in some preferred embodiments, the outer periphery of the first metal sheet 21 is welded to the upper end of the side wall to seal the top cover to the upper end of the side wall. In addition, the housing 1 and the bottom case 15 may be integrally formed, or the outer circumference of the bottom case 15 may be welded to the lower end of the housing 1, which is not particularly limited in the present invention.
In the utility model, the first connecting piece 34 can be welded with the second connecting part 222, and the first welding mark generated by the welding penetrates through the first connecting piece 34 and extends to the 1/3-2/3 thickness of the second connecting part 222, which is beneficial to further improving the performances of the battery, such as sealing property, stability and the like. In a specific implementation, the welding may be performed by using a laser welding method, in the welding process, the first connecting portion 34 and the second connecting portion 222 are stacked, then laser is projected onto the first connecting portion 34 to perform welding, and the welding strength is controlled by adjusting and controlling laser welding parameters, so that the generated welding mark penetrates through the first connecting portion 34 and extends to the 1/3-2/3 thickness of the second connecting portion 222, that is, the length of the welding mark generated in the second connecting portion 222 in the thickness direction of the second connecting portion 222 is about 1/3-2/3 of the thickness of the second connecting portion 222 (that is, the penetration depth of the second connecting portion 222 caused by the welding is about 1/3-2/3 of the thickness of the second connecting portion 222).
In some embodiments, the second connection portion 222 may further be provided with a liquid injection hole communicating with the cavity 6, and a sealing plate 5 for sealing the liquid injection hole, the sealing plate 5 is located on a side of the second connection portion 222 facing away from the cavity 6, the sealing plate 5 is electrically connected with the first tab through the second connection portion 222, the first connection plate 34 is welded with the sealing plate 5, and a first welding mark generated by the welding penetrates the first connection plate 34 and extends to the 1/3-2/3 thickness of the sealing plate 5 (i.e., the fusion depth of the sealing plate 5 caused by the welding is about 1/3-2/3 of the thickness of the sealing plate 5), wherein the liquid injection hole can be used for injecting electrolyte and the like, for example. Alternatively, the first tab is welded to the second connection portion 222, and the sealing plate 5 is welded to the second connection portion 222.
Typically, the second metal sheet 22 further comprises a first connecting portion 221 connected to the second connecting portion 222, and a surface of the sealing sheet 5 facing away from the cavity 6 is no higher than a surface of the first connecting portion 221 facing away from the cavity 6. Specifically, second sheetmetal 22 is equipped with the recess that is located second connecting portion 222 top, this recess is enclosed by first connecting portion 221 and establishes and forms (the lateral wall of this recess is first connecting portion 221 promptly, the bottom of this recess is second connecting portion 222), gasket 5 is located this recess, the degree of depth of this recess satisfies that the surface that makes gasket 5 deviate from cavity 6 is not higher than the surface that first connecting portion 221 deviates from cavity 6, the surface that preferred gasket 5 deviates from cavity 6 is less than the surface that first connecting portion 221 deviates from cavity 6 (the surface that gasket 5 deviates from cavity 6 promptly is located the below that first connecting portion 221 deviates from the surface of cavity 6), thereby can make the top surface of battery PACK structure more level and more level, reduce the battery volume, further optimize battery performance. The sealing piece 5 is located in the above-mentioned recess, and it specifically can be welded on the second connecting portion 222 of this recess lower part, and for the convenience of welding, there is generally the hole between the lateral wall (being first connecting portion 221) of sealing piece 5 and recess, for example, the cross section of sealing piece 5 and recess perpendicular to sealing piece 5 thickness direction is circular, and sealing piece 5 and recess set up with one heart, and the external diameter of sealing piece 5 is less than the internal diameter of recess for there is the hole between the lateral wall of sealing piece 5 and recess. The first metal sheet 21, the first insulating sheet 23, and the first connecting portion 221 of the second metal sheet are sequentially stacked, and the second metal sheet 22 may be connected to the first insulating sheet 23 through the first connecting portion 221.
In the present invention, the second connecting portion 222 is disposed at the through hole, generally penetrates through the through hole, the surface facing the cavity 6 is connected to the first tab, the surface facing away from the cavity 6 is connected to the first connecting plate 34, generally, the surface facing the cavity 6 of the second connecting portion 222 is substantially flush with the surface facing the cavity 6 of the first metal sheet 21 or is located below the surface facing the cavity 6 of the first metal sheet 21 (i.e. closer to the cavity 6 than the surface facing the cavity 6 of the first metal sheet 21), which facilitates the connection between the first tab and the second connecting portion 222, optionally, the first tab may include a straight portion 8 connected to the electrical core 9, the surface of the straight portion 8 perpendicular to the thickness direction of the straight portion 8 is substantially parallel to the surface of the second connection portion 222 perpendicular to the thickness direction of the second connection portion 222, the straight portion 8 is welded to the second connection portion 222 to achieve the connection of the second connection portion 222 and the first tab. Furthermore, a third insulating layer 13 may be further disposed on the surface of the first metal sheet 21 facing the cavity 6, and the third insulating layer 13 is located between the first metal sheet 21 and the straight portion 8 of the first tab, so that the first tab is insulated from the first metal sheet 21 by the third insulating layer 13.
In general, the first connection piece 34, the sealing sheet 5, the second metal sheet 22, the first insulation sheet 23, the second metal sheet 22, the liquid injection hole, the through hole, and the cavity 6 are substantially concentrically arranged, the cross section of the first connection piece 34 perpendicular to the thickness direction thereof and the cross section of the sealing sheet 5 perpendicular to the thickness direction thereof may be, for example, circular, the cross section of the second metal sheet 22 perpendicular to the thickness direction thereof, the cross section of the first insulation sheet 23 perpendicular to the thickness direction thereof and the cross section of the second metal sheet 22 perpendicular to the thickness direction thereof may be, for example, circular, and the shape of the case 1 may be, for example, cylindrical, and the battery is, for example, a button battery, but is not limited thereto. The above thickness direction is the same as the direction from the bottom case 15 to the top cover 2 (i.e., the axial direction of the battery).
In the present invention, the first adaptor 3 and the second adaptor 4 are used as the connection wires for connecting the battery with the peripheral circuit, and the part of the first adaptor 3 extending out of the outer edge of the top cover and the part of the second adaptor 4 extending out of the outer edge of the bottom shell are used as the adaptors (i.e. the first adaptor and the second adaptor described below) for connecting the battery with the peripheral circuit through the adaptors, for example, the circuit in the electronic product equipped with the battery.
In the present invention, the first lead may be linear, that is, the first lead may be a straight structure extending outward from the first connecting plate 34, a surface of the straight structure perpendicular to the thickness direction of the first lead may be parallel to a surface of the first connecting plate 34 perpendicular to the thickness direction of the first lead, and the first lead may also be in other shapes such as an L shape. In some preferred embodiments, a first insulating layer 11 is disposed on a side wall of the housing, a portion of the other end of the first pin, which extends out of an outer edge of the top cover, is a first adapter 31, the first pin further includes a first extension portion 32 extending to the side wall of the housing, one end of the first extension portion 32 is connected to the first connection tab 34, the other end of the first extension portion 32 is connected to the first adapter 31, and the first extension portion 32 is insulated from the side wall by the first insulating layer 11.
Generally, an orthographic projection of the second metal sheet 22 perpendicular to the axial direction of the battery covers an orthographic projection of the first connecting sheet 34 perpendicular to the axial direction of the battery, that is, the first connecting sheet 34 does not exceed the outer edge of the second metal sheet 22, for example, a cross section of the second metal sheet 22 perpendicular to the thickness direction is a circular ring shape, a cross section of the first connecting sheet 34 perpendicular to the thickness direction is a circular shape, the second metal sheet 22 is concentrically arranged with the first connecting sheet 34, and the outer diameter of the second metal sheet 22 is larger than the outer diameter of the first connecting sheet 34. The first lead is bent at the joint of the top cover and the side wall of the housing, and extends to the side wall of the housing through the first extending portion 32, so that the first adapter 31 is located at the side surface of the housing (the side wall deviates from the surface of the cavity 6), specifically, the first lead may include a horizontal portion 33, a first bending portion, a first extending portion 32, a first connecting piece 34, the horizontal portion 33, the first bending portion, and the first extending portion 32 are sequentially connected, the first lead is bent at the joint of the top cover and the side wall through the first bending portion, so that the first extending portion 32 is located on the side wall of the housing 1, that is, the horizontal portion 33 is located on the top cover, and the surface of the horizontal portion 33 is substantially parallel to the surface of the first connecting piece 34, one end of the first bent portion is connected to the horizontal portion 33, the other end of the first bent portion is connected to one end of the first extending portion 32, and the other end of the first extending portion 32 is connected to the first adapter 31 (as shown in fig. 4 and 5). The first bending portion and the first extending portion 32 are insulated from the sidewall of the housing by the first insulating layer 11, so that the first adapting piece 3 is insulated from the second tab, thereby avoiding short circuit and other phenomena.
Alternatively, the first rotating joint 31 may be a sheet shape, and a plane of a surface of the first rotating joint 31 perpendicular to the thickness direction of the first rotating joint 31 forms an angle of less than or equal to 90 °, preferably about 90 °, with the axial direction of the battery, that is, the surface of the first rotating joint 31 perpendicular to the thickness direction thereof is substantially perpendicular to the axial direction of the battery. The first connecting member may be integrally formed, and for example, the first connecting member, the horizontal portion, the first extending portion, and the first adapter are integrally formed.
Typically, the first insulating layer 11 surrounds the sidewall of the housing, which corresponds to the sidewall of the housing located in the cavity surrounded by the first insulating layer 11. In some embodiments, the first metal sheet 21, the first insulating sheet 23, the second metal sheet 22, the sealing sheet 5, and the first connecting sheet 34 are concentrically disposed, an outer diameter of the first metal sheet 21, an outer diameter of the first insulating sheet 23, an outer diameter of the second metal sheet 22, a diameter of the sealing sheet 5, and a diameter of the first connecting sheet 34 are sequentially decreased, a fourth insulating layer 14 is further disposed in a region of a surface of the second metal sheet 22 away from the cavity 6, the region not covered by the first insulating sheet 23, one side of the fourth insulating layer 14 is connected to the first insulating sheet 23, the other side of the fourth insulating layer is connected to the first insulating layer 11 of the sidewall, and the fourth insulating layer 14 is located between the horizontal portion 33 of the first lead and the first metal sheet 21, so that the first lead is insulated from the first metal sheet 21 by the fourth insulating layer 14, and short circuit and other phenomena are avoided.
In the utility model, the second pin may be linear, that is, the second pin is a straight structure extending outward from the second connecting sheet, a surface of the straight structure perpendicular to the thickness direction of the second pin is substantially parallel to a surface of the second connecting sheet perpendicular to the thickness direction of the second pin, and the second pin may also be in other shapes such as an L shape. In some preferred embodiments, the portion of the other end of the second pin extending out of the outer edge of the bottom shell is a second adapter (e.g., the second adapter 41 and the second adapter 41' in fig. 1 to 4), the second pin further includes a second extension (e.g., the second extension 42 of the conductive pin and the second extension 42 of the positioning pin in fig. 1) extending to the sidewall of the shell 1, the second connection pad is connected to one end of the second extension, the second adapter is connected to the other end of the second extension, the second extension is connected to the sidewall of the shell through the first insulating layer 11 (i.e., the first insulating layer 11 is located between the second extension and the sidewall), the structure is beneficial to the battery to be assembled in the electronic product through the second adapter, not only the communication between the battery and the circuit in the electronic product is realized, and the battery is favorably positioned in the electronic product through the second adapter, and the stability of the battery in the electronic product is improved.
Generally, the orthographic projection of the bottom shell 15 perpendicular to the axial direction of the battery covers the orthographic projection of the second connecting piece perpendicular to the axial direction of the battery, that is, the second connecting piece does not exceed the outer edge of the bottom shell, for example, the cross section of the bottom shell perpendicular to the thickness direction of the bottom shell is a circular ring shape, the cross section of the second connecting piece perpendicular to the thickness direction of the bottom shell is a semicircular ring shape, the bottom shell and the second connecting piece are concentrically arranged, the outer diameter of the bottom shell is not smaller than the outer diameter of the second connecting piece and is generally larger than the outer diameter of the second connecting piece, the second pin is bent at the joint of the bottom shell and the side wall, and extends to the side wall of the shell through the second extending portion, so that the second adapter is located on the side face of the shell. Specifically, the second pin includes the second kink, the second extension, the second connection piece, the second kink, the second extension links to each other in proper order, the second pin takes place to buckle in the handing-over department of drain pan and lateral wall through the second kink, so that the second extension is located the lateral wall of casing, the one end of first kink links to each other with the second connection piece that is located on the drain pan promptly, the other end links to each other with the one end that is located the second extension of casing lateral wall, the other end and the second adapter of second extension link to each other, the second kink, the second extension meets through the lateral wall of first insulation layer 11 with the casing.
Optionally, the second adapter may be in a sheet shape, and an included angle between a plane where a surface of the second adapter perpendicular to the thickness direction of the second adapter is located and the axial direction of the battery is less than or equal to 90 °, and preferably about 90 °, that is, the surface of the second adapter perpendicular to the thickness direction thereof is substantially perpendicular to the axial direction of the battery. The second adaptor may be integrally formed, for example, by integrally forming the second connecting piece, the second bending portion, the second extending portion, and the first adaptor.
In the utility model, the number of the second pins can be one or more, preferably at least two, at least one of the second pins is used as a conductive pin and is used as a wiring connected with a peripheral circuit, at least one of the second pins is used as a positioning pin and is used for assembling the battery in a positioning structure of an electronic product, and meanwhile, the conductive pin and the positioning pin are arranged on the second adapter piece and are integrally formed, thereby being beneficial to further simplifying the structure of the battery, improving the structural stability and other performances of the battery.
In some embodiments, the second pins include a positioning pin and a conductive pin, and the positioning pin may be located between the conductive pin and the first pin in a projection of the battery perpendicular to a direction from the bottom case to the top cover.
In addition, in the direction from bottom case 15 to the top cover, the distance from the second adapter 41 'of the positioning pin to the top cover is greater than or equal to the distance from the second adapter 41 of the conductive pin to the top cover, and/or the distance from the second adapter 41' of the positioning pin to the top cover is greater than or equal to the distance from the first adapter 41 of the first pin to the top cover, that is, the distance from the second adapter 41 'of the positioning pin to the bottom case 15 may not be higher than the distance from the second adapter 41 of the conductive pin and/or the first adapter 31 of the first pin, and the distance from the second adapter 41' of the positioning pin to the bottom case 15 is less than or equal to the distance from the second adapter 41 of the conductive pin to the bottom case 15 and/or the distance from the first adapter 31 of the first pin to the bottom case. It is generally preferred that the second adapter 41 'of the positioning pins is lower than the second adapter 41 of the conductive pins and/or the first adapter 31 of the first pins (i.e. the second adapter 41' of the positioning pins is located below the second adapter 41 and/or the first adapter 31 of the first pins, and the second adapter 41 of the conductive pins and/or the first adapter 31 of the first pins is closer to the top cover than the second adapter 41 'of the positioning pins), for example, the second adapter 41' of the positioning pins may be located below the second adapter 41 of the conductive pins, or below the first adapter 31 of the first pins, or below both the first adapter 31 of the first pins and the second adapter 41 of the conductive pins (as shown in fig. 1), wherein the distances from the second adapter 41 of the conductive pins and the first adapter 31 of the first pins to the top cover may be substantially equal or different, i.e., the heights of the two at the side wall of the housing may be the same or different, and the present invention is not particularly limited thereto. The distance is the vertical distance from the first adapter or the second adapter to the top cover.
In the present invention, the second adaptor 4 may be specifically welded on the bottom shell 15, and the bottom shell 15 and the second tab are electrically connected. In some embodiments, the second connecting piece includes a third connecting portion 43, a fourth connecting portion 44, and a transition portion connected between the third connecting portion 43 and the fourth connecting portion 44, the third connecting portion 43 is welded with the bottom case 15; the top surface (surface facing the bottom case) of the fourth connecting portion 44 is higher than the top surface (surface facing the bottom case) of the third connecting portion and/or the bottom surface (surface facing away from the bottom case) of the fourth connecting portion is higher than the bottom surface (surface facing away from the bottom case) of the third connecting portion, that is, the top surface of the fourth connecting portion 44 is farther from the bottom case 15 than the top surface of the third connecting portion 43, and/or the bottom surface of the fourth connecting portion 44 is farther from the bottom case 15 than the bottom surface of the third connecting portion 43, which is equivalent to the second connecting piece being bent through the transition portion to form the third connecting portion 43 and the fourth connecting portion 44, respectively, by this structural design, the magnetic shielding effect can be achieved, namely, the magnetic field generated by the current in the working process of the battery is shielded, the influence of the magnetic field on the electronic product adopting the battery is avoided, for example, the phenomena of noise generation of electronic products caused by magnetic fields and the like are avoided, and the service performance of the battery is further improved.
In some embodiments, the bottom case 15 is further provided with a second insulating layer, the second connecting piece includes a third connecting portion 43, a fourth connecting portion 44, and a transition portion connected between the third connecting portion 43 and the fourth connecting portion 44, the third connecting portion 43 is welded to the bottom case 15, and the fourth connecting portion 44 is connected to the bottom case 15 through the second insulating layer 12 (i.e., the second insulating layer 12 is located between the fourth connecting portion 44 and the bottom case 15). As described above, generally, the top surface of the fourth connecting portion 44 is higher than the top surface of the third connecting portion and/or the bottom surface of the fourth connecting portion is higher than the bottom surface (surface facing away from the bottom case) of the third connecting portion.
In some embodiments, the thickness of the second insulating layer 12 may be 0.05mm-0.1mm, such as 0.05mm, 0.08mm, 0.1mm, and the like. The orthographic projection of the second insulating layer 12 perpendicular to the thickness direction of the fourth connecting portion 44 covers the orthographic projection of the fourth connecting portion 44 perpendicular to the thickness direction of the fourth connecting portion 44, and the surface area of the second insulating layer 12 may be about 1/3-1/2 of the surface area of the bottom case, and the shape thereof is, for example, a semicircle (as shown in fig. 1 and 2), but is not limited thereto.
In some embodiments, the third connecting portion 43 is welded to the bottom case 15, and the second solder mark generated by the welding penetrates through the third connecting portion 43 and extends to the 1/3-2/3 thickness of the bottom case 15, which is beneficial to further improving the structural stability and other properties of the battery. In a specific implementation, the welding may be performed by a laser welding method, in which the third connecting portion 43 of the second connecting sheet is stacked on the bottom case 15, and then laser is projected to the third connecting portion 43 to perform welding, and the welding strength is controlled by adjusting and controlling laser welding parameters, so that the generated welding mark penetrates through the third connecting portion 43 and extends to the 1/3-2/3 thickness of the bottom case 15, that is, the length of the welding mark generated in the bottom case 15 in the thickness direction of the bottom case 15 is 1/3-2/3 (that is, the penetration depth of the welding mark 15 caused by the welding is 1/3-2/3 with the thickness of 15).
In the present invention, the second pin may be specifically disposed on the fourth connection portion 44, that is, one end of the second pin is connected to the fourth connection portion 44, and the other end of the second pin is used as a connector for connecting to a peripheral circuit. In some embodiments, the second pins include conductive pins and positioning pins, the second adapter 41 ' of the positioning pin is located between the first adapter 31 of the first pin and the second adapter 41 of the conductive pin, and in an orthogonal projection of the housing perpendicular to a direction from the bottom case 15 to the top cover, the second adapter 41 ' of the positioning pin is located between the first adapter 31 of the first pin and the second adapter 41 of the conductive pin, and an included angle α between the first connection line and the second connection line is satisfied, where α > 30 °, the first connection line is a straight line passing through a center point of the orthogonal projection of the bottom case 15 and bisecting the transition portion, and the second connection line is a straight line passing through a center point of the orthogonal projection of the bottom case 15 and bisecting the second adapter 41 ' of the positioning pin. Wherein, the first connecting line bisects the transition part, i.e. the distance from the first connecting line to the junction of the transition part and the third connecting part 43 is substantially equal to the distance from the first connecting line to the junction of the transition part and the fourth connecting part 44, the second connecting line bisects the second adapter 41' of the positioning pin, that is, the distance from the second connection line to one side (denoted as a first side) of the second adapter 41 'of the positioning pin is substantially equal to the distance from the second connection line to the other side (denoted as a second side) of the second adapter 41' of the positioning pin, the first side is opposite to the second side, the center point of the orthographic projection of the bottom shell 15 is located at the center of the orthographic projection of the top cover, for example, the orthographic projection of the bottom shell 15 is circular, the central point is a center of an orthographic projection of the bottom shell 15, or the orthographic projection of the bottom shell 15 is a rectangle (or a square), and the central point is an intersection point of two diagonal lines of the rectangle (or the square). Alternatively, α can be an angular value in the range of 40 °, 50 °, 60 °, 70 °, 80 °, 90 °, 100 °, 110 °, 120 °, 130 °, 140 °, or any two therebetween, with 60 ° ≦ α ≦ 140 °, more preferably 100 ° ≦ α ≦ 125 °, such as 108 ° (as shown in FIG. 3).
In specific implementation, the conductive pin can be used as a connection wire between the battery and the peripheral circuit, the second adapter is used as a connector connected with the peripheral circuit, and the positioning pin is used for assembling the battery in a positioning structure of the electronic product, so that the battery is clamped in the electronic product through the second adapter (or called positioning sheet) of the positioning pin, and the battery is assembled in the electronic product.
Specifically, the cross section of the second connecting piece perpendicular to the thickness direction of the second connecting piece may be in a shape of an incomplete ring (or arc) with an opening, that is, one end of the third connecting portion 43 is connected to one end of the fourth connecting portion 44, and the other end of the third connecting portion 43 is not connected to the other end of the fourth connecting portion 44, so as to form a circular opening, so that the cross section of the second connecting piece is in a shape of an incomplete ring with an opening, for example, a semicircular ring. Generally, the outer edge of the second connecting sheet is an arc, the arc is substantially concentric with the outer edge of the shell, which is beneficial to processing and positioning of the battery, and the substantial concentricity means that the concentricity is within an error range, namely, complete concentricity cannot be achieved normally due to processing errors, and only concentricity can be strived for as much as possible.
In the utility model, the battery further comprises a second insulating sheet 7 arranged on one side of the top cover departing from the cavity 6, and the orthographic projection of the second insulating sheet 7 perpendicular to the thickness direction of the top cover covers the orthographic projection of the top cover perpendicular to the thickness direction of the top cover, namely, the parts of the first connecting sheet 34, the horizontal part 33 of the first pin, the second metal sheet 22, the first metal sheet 21 and the like on the top cover are all covered by the second insulating sheet 7, so that the performances of the battery such as safety and the like are further improved, and the phenomena of short circuit and the like when the battery is assembled on a terminal product (such as a wearable electronic product and the like) or in the processes of transportation, use and the like are prevented.
The battery cell 9 comprises a positive plate, a negative plate and a diaphragm positioned between the positive plate and the negative plate, wherein the diaphragm is used for separating the positive plate from the negative plate to avoid short circuit caused by contact of the positive plate and the negative plate. The first tab and the second tab have opposite polarities, one of the first tab and the second tab serves as a positive tab and is electrically connected with the positive plate, the other one serves as a negative tab and is electrically connected with the negative plate, and generally, the first tab is preferably a positive tab, and the second tab is preferably a negative tab.
Above-mentioned electric core 9 can be coiling formula electric core 9 (or refer to and roll up the core) that is coiling formula structure, and positive plate, diaphragm, negative pole piece wherein form coiling formula structure through coiling after the stacking in proper order promptly, also can be lamination formula electric core 9 of lamination formula structure, positive plate, diaphragm, negative pole piece wherein stack gradually and place formation lamination formula structure promptly, but is not limited to this.
In addition, the number of the battery cells 9 in the cavity 6 may be one or more, and when the number of the battery cells 9 is multiple, the positive plates of all the battery cells 9 are connected to the positive electrode tabs, and the negative plates of all the battery cells 9 are connected to the negative electrode tabs.
In the present invention, the housing 1, the first metal sheet 21, the sealing sheet 5, the second metal sheet 22, the first tab, the second tab, the first adaptor 3, and the second adaptor 4 may be made of a conventional conductive material in the art, such as a metal material, for example, the first adaptor 3 may be made of a nickel material or a stainless steel material, that is, a nickel sheet or a stainless steel sheet, and the second adaptor 4 may be made of a nickel material or a stainless steel material, that is, a nickel sheet or a stainless steel sheet. The first insulating sheet 23, the first insulating layer 11, the second insulating sheet 7, the second insulating layer 12, the third insulating layer 13, and the fourth insulating layer 14 may be insulating paste conventional in the art, such as PP paste formed of polypropylene. Specifically, after a layer of insulating glue is attached to the area of the second metal sheet 22 close to the surface of the cavity 6 and corresponding to the straight portion 8 of the first tab, the straight portion 8 of the first tab may be welded to the second connection portion 222 of the second metal sheet 22; after a layer of insulating glue is attached to the outer side surface of the housing 1 (i.e., the surface of the cavity wall away from the precursor), the region of the first metal sheet 21 corresponding to the horizontal portion 33 of the first pin, and the region of the bottom surface of the housing 1 corresponding to the fourth connecting portion 44 of the second adaptor 4, the third connecting portion 43 of the second connecting piece of the second adaptor 4 is welded to the bottom surface of the housing 1, the fourth connecting portion 44 is bonded to the bottom surface of the housing 1 by the insulating glue, the first connecting piece 34 of the first adaptor 3 is welded to the sealing piece 5, and the first pin is insulated from the housing 1 and the first insulating layer 11. Generally, all areas outside the cavity wall (i.e. the side of the housing 1) are provided with the first insulating layer 11, which is equivalent to the cavity wall located in the cavity 6 surrounded by the first insulating layer 11.
The embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiment. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (25)
1. A battery is characterized by comprising a shell, a top cover, a battery cell and a second adapter, wherein the top cover is sealed at the upper end of the shell and encloses with the shell to form a cavity, the battery cell is positioned in the cavity, the shell comprises a side wall surrounding the cavity and a bottom shell arranged at the lower end of the side wall, the battery cell is provided with a first tab and a second tab, and the polarities of the first tab and the second tab are opposite; the bottom shell is electrically connected with the second pole lug, the second adapter comprises a second connecting piece and a second pin, and the second adapter is connected with the bottom shell through the second connecting piece; one end of the second pin is connected with the second connecting sheet, and the other end of the second pin extends out of the outer edge of the bottom shell.
2. The battery of claim 1, wherein the second tab includes a third connection portion, a fourth connection portion, and a transition portion connected between the third connection portion and the fourth connection portion, the third connection portion being welded to the bottom case;
the top surface of the fourth connecting portion is higher than the top surface of the third connecting portion, and/or the bottom surface of the fourth connecting portion is higher than the bottom surface of the third connecting portion.
3. The battery of claim 1, wherein the bottom case is further provided with a second insulating layer, the second connecting piece comprises a third connecting portion, a fourth connecting portion, and a transition portion connected between the third connecting portion and the fourth connecting portion, the third connecting portion is welded to the bottom case, and the fourth connecting portion is connected to the bottom case through the second insulating layer.
4. The battery according to any one of claims 1 to 3,
the top cover comprises a first metal sheet, a first insulating sheet and a second metal sheet, the first metal sheet is connected with the upper end of the shell to realize that the top cover covers the upper end of the shell, and the second metal sheet is in insulating connection with the first metal sheet through the first insulating sheet;
the top cover is provided with a through hole penetrating through the first metal sheet and the second metal sheet, the through hole is communicated with the cavity, the second metal sheet comprises a first connecting part and a second connecting part connected with the first connecting part, the first connecting part is connected with the first insulating sheet, and the second connecting part is arranged at the through hole and seals the through hole;
the battery also comprises a first adapter, the first adapter comprises a first connecting sheet and a first pin, one end of the first pin is connected with the first connecting sheet, and the other end of the first pin extends out of the outer edge of the top cover;
the second connecting portion is electrically connected with the first tab, and the first adapter is connected with the second connecting portion through the first connecting piece.
5. The battery according to claim 4,
the outer periphery of the first metal sheet is welded with the upper end of the side wall, so that the top cover is sealed on the upper end of the shell.
6. The battery of claim 4, wherein the first tab is welded to the second connector, and wherein a first weld mark produced by the welding extends through the first tab and to a thickness 1/3-2/3 of the second connector.
7. The battery of claim 4, wherein the first transition piece is located on a side of the second metal sheet facing away from the cavity.
8. The battery according to claim 4, wherein the second connecting portion is provided with a liquid injection hole communicating with the cavity, and a sealing sheet sealing the liquid injection hole, the sealing sheet is located on a side of the second connecting portion facing away from the cavity, the sealing sheet is electrically connected to the first tab through the second connecting portion, and the first tab is welded to the sealing sheet.
9. The battery of claim 8, wherein a first weld mark created by the welding extends through the first connection tab and to the sealing tab at a thickness of 1/3-2/3.
10. The battery of claim 8, wherein a surface of the sealing sheet facing away from the cavity is no higher than a surface of the first connection portion facing away from the cavity.
11. The battery of claim 4, wherein the side wall of the housing is provided with a first insulating layer, and at least one of the following characteristics is satisfied:
the part of the other end of the first pin extending out of the outer edge of the top cover is a first adapter, the first pin further comprises a first extending part extending to the side wall of the shell, one end of the first extending part is connected with the first connecting piece, the other end of the first extending part is connected with the first adapter, and the first extending part is insulated from the side wall through the first insulating layer;
the part that the other end of second pin stretches out the drain pan outer fringe is the second adapter, the second pin still including extending to the second extension of casing lateral wall, the one end of second extension with the second connection piece links to each other, the other end of second extension with the second adapter links to each other, the second extension passes through first insulation layer with the casing lateral wall meets.
12. The battery of claim 11, wherein the second pins comprise a positioning pin and a conductive pin, and wherein a distance from the second adapter of the positioning pin to the top cover in a direction from the bottom cover to the top cover is greater than or equal to a distance from the second adapter of the conductive pin to the top cover, and/or wherein a distance from the second adapter of the positioning pin to the top cover is greater than or equal to a distance from the first adapter of the first pin to the top cover.
13. The battery of claim 4, wherein the second pins comprise a positioning pin and a conductive pin, and the positioning pin is located between the conductive pin and the first pin in a projection of the battery perpendicular to a direction from the bottom case to the top cover.
14. The battery according to claim 4,
the second connecting piece comprises a third connecting part, a fourth connecting part and a transition part connected between the third connecting part and the fourth connecting part, and the third connecting part is welded with the bottom shell; the top surface of the fourth connecting part is higher than the top surface of the third connecting part, and/or the bottom surface of the fourth connecting part is higher than the bottom surface of the third connecting part;
the part of the other end of the first pin extending out of the outer edge of the top cover is a first adapter, and the part of the other end of the second pin extending out of the outer edge of the bottom shell is a second adapter; the second pin includes electrically conductive pin and location pin, in the projection of the direction of casing perpendicular to from drain pan to top cap, the second adapter of location pin is located the first adapter of first pin with between the second adapter of electrically conductive pin to satisfy the contained angle of first line and second line and be alpha, alpha > 30, first line is for crossing the orthographic projection's of top cap central point bisects the straight line of transition portion, the second line is for crossing the orthographic projection's of top cap central point bisects the straight line of the second adapter of location pin.
15. The battery of any of claims 2, 3 or 14, wherein the second pin is disposed on the fourth connection portion.
16. The battery of any one of claims 2, 3, or 14, wherein a second solder mark generated by the welding extends through the third connecting portion and to a thickness of 1/3-2/3 of the bottom case.
17. The battery of claim 14, wherein α is 60 ° α ≦ 140 °.
18. The battery of claim 17, wherein α is 100 ° α 125 °.
19. The battery of claim 3, wherein the second insulating layer has a thickness of 0.05mm to 0.1 mm.
20. The battery according to claim 1 or 2, wherein a cross section of the second tab perpendicular to a thickness direction of the second tab has a shape of a non-complete semicircular ring having an opening.
21. The battery of claim 1 or 2, wherein the outer edge of the second tab is a circular arc that is substantially concentric with the outer edge of the case.
22. The battery of claim 1 or 2, wherein the second adaptor is located on a side of the bottom housing facing away from the cavity.
23. The battery of claim 1 or 2, further comprising a second insulating sheet disposed on a side of the top cap facing away from the cavity, wherein an orthographic projection of the second insulating sheet perpendicular to the thickness direction of the top cap covers an orthographic projection of the top cap perpendicular to the thickness direction of the top cap.
24. The battery of claim 1 or 2, wherein the first tab is a positive tab and the second tab is a negative tab.
25. The battery according to claim 1 or 2, wherein the battery is a button battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122016558.7U CN215815976U (en) | 2021-08-25 | 2021-08-25 | Battery with a battery cell |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122016558.7U CN215815976U (en) | 2021-08-25 | 2021-08-25 | Battery with a battery cell |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023197792A1 (en) * | 2022-04-13 | 2023-10-19 | 珠海冠宇电池股份有限公司 | Battery |
| WO2023221385A1 (en) * | 2022-05-20 | 2023-11-23 | 华勤技术股份有限公司 | Soft pack button battery module, sound production apparatus, and electronic device |
-
2021
- 2021-08-25 CN CN202122016558.7U patent/CN215815976U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023197792A1 (en) * | 2022-04-13 | 2023-10-19 | 珠海冠宇电池股份有限公司 | Battery |
| WO2023221385A1 (en) * | 2022-05-20 | 2023-11-23 | 华勤技术股份有限公司 | Soft pack button battery module, sound production apparatus, and electronic device |
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