CN210245557U - Button cell - Google Patents

Button cell Download PDF

Info

Publication number
CN210245557U
CN210245557U CN201921047836.1U CN201921047836U CN210245557U CN 210245557 U CN210245557 U CN 210245557U CN 201921047836 U CN201921047836 U CN 201921047836U CN 210245557 U CN210245557 U CN 210245557U
Authority
CN
China
Prior art keywords
battery
sealing
top cover
button cell
pressure relief
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201921047836.1U
Other languages
Chinese (zh)
Inventor
Mingde Wang
王明德
Xiuming Guan
关秀明
Weichen Hu
胡伟辰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Gp Batteries Co ltd
Original Assignee
Shenzhen Gp Batteries Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Gp Batteries Co ltd filed Critical Shenzhen Gp Batteries Co ltd
Priority to CN201921047836.1U priority Critical patent/CN210245557U/en
Application granted granted Critical
Publication of CN210245557U publication Critical patent/CN210245557U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

A button cell, comprising: battery case, the battery sealing washer, battery top cap subassembly and battery core subassembly, it holds the chamber to be provided with electric core in the battery case, electric core is placed and is provided with the encapsulation bellying between district and the encapsulation fixed area, the electric core holds the bottom edge in chamber and has seted up annular circular slot, the pressure relief groove has been seted up to the bottom of battery case, the battery sealing washer is including sealed location portion, sealed isolation portion and sealed portion of turning over, battery top cap subassembly includes top cap and lower top cap, the electric core subassembly includes electric core, electrolyte, positive pole connection piece and negative pole connection piece. The utility model discloses a button cell is through setting up battery case, battery sealing washer, battery top cap subassembly and battery core subassembly to prevent pressing the disappointing structure and setting up in battery case's outside, make when battery internal pressure is too big, can carry out the pressure release exhaust operation through the pressure release groove of battery case bottom, can improve the rate of utilization of battery inner space from this, make battery capacity improve.

Description

Button cell
Technical Field
The utility model relates to a battery manufacturing technology field especially relates to a button cell.
Background
The button-type battery is a cavity structure formed by combining a metal bottom shell and a metal top shell. The bottom shell is typically connected to the positive electrode and the top shell is typically connected to the negative electrode. The bottom and top shells are separated by a rubber gasket (usually polypropylene) which serves both sealing and insulating functions. When sealing, the edge of the bottom shell is pressed by mechanical force and is inverted inwards to be included with the top shell, thereby forming a closed shell.
Usually, the inside of the casing of the button cell is a cell in a sandwich structure composed of a single-layer positive plate, a single-layer separator paper and a single-layer negative plate, and the cell is horizontally arranged parallel to the upper and lower bottom surfaces of the casing. In general, a button battery is required to be provided with a pressure and air leakage prevention structure in order to prevent the button battery from swelling or exploding due to an excessive internal pressure. The pressure-resistant air leakage structure of the conventional button-type battery is generally arranged inside a battery cavity, specifically, the pressure-resistant air leakage structure is arranged on a top cover of the battery, so that the pressure-resistant air leakage structure is positioned inside the battery cavity close to an opening, and therefore the pressure-resistant air leakage structure can play a role in pressure release and air exhaust when the internal pressure of the button-type battery is too large.
However, when preventing pressing the setting of the structure of losing air inside the battery top cap after, can lead to the thickening of whole battery top cap, simultaneously, can occupy too much battery inner space for the inside electric meat height of button type battery becomes low, and then influences the holistic capacity of battery. Therefore, how to design a button type battery in which a pressure and air leakage prevention structure is disposed outside the battery and the entire capacity of the battery can be improved, has been a problem that needs to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the weak point among the prior art, provide one kind and will prevent pressing the structure that loses heart and set up in the battery case outside to can improve battery capacity and prevent pressing the button cell of the effect that loses heart.
The purpose of the utility model is realized through the following technical scheme:
a button cell, comprising:
the battery comprises a battery shell, wherein a battery cell accommodating cavity is arranged in the battery shell, the battery cell accommodating cavity comprises a battery cell placing area and a packaging fixing area, a packaging protruding part is arranged between the battery cell placing area and the packaging fixing area, the bottom edge of the battery cell accommodating cavity is provided with an annular circular groove, the bottom of the battery shell is provided with a pressure relief groove, the bottom of the pressure relief groove is provided with a round angle structure, and the depth of the pressure relief groove is 0.1-0.2 mm; the opening end of the battery shell is also provided with a packaging bending part;
the battery sealing ring comprises a sealing and positioning part, a sealing and isolating part and a sealing and folding part, wherein the sealing and positioning part is arranged on the packaging protruding part, the sealing and isolating part is connected with the bottom of the sealing and positioning part, the sealing and folding part is connected with the top of the sealing and positioning part, the sealing and isolating part is attached to the end face of the packaging protruding part, and the sealing and folding part is attached to the inner side wall of the packaging and folding part;
the battery top cover assembly comprises an upper top cover and a lower top cover, the upper top cover and the lower top cover are both provided with a position avoiding bulge, the lower top cover is arranged on the sealing and positioning part, and the upper top cover is connected with the lower top cover; and
the battery core assembly comprises a battery core, electrolyte, a positive connecting piece and a negative connecting piece, wherein the battery core is respectively provided with the electrolyte in the battery core placing area, the positive connecting piece is respectively provided with the positive pole of the battery core and electrically connected with the lower top cover, the negative connecting piece is arranged at the bottom of the battery core accommodating cavity, and the negative connecting piece is respectively provided with the negative pole of the battery core and electrically connected with the battery shell.
In one embodiment, the cross section of the pressure relief groove is in a triangular structure.
In one embodiment, the pressure relief groove has a depth of 0.15 mm.
In one embodiment, the pressure relief groove is a full circular groove structure.
In one embodiment, the pressure relief groove is an arc-shaped groove structure.
In one embodiment, the upper cap is a nickel metal sheet structure.
In one embodiment, the lower header is an aluminum sheet metal structure.
In one embodiment, the surface of the lower top cover is provided with an anti-corrosion film.
In one embodiment, the corrosion protection film is an aluminum oxide film.
In one embodiment, the battery sealing ring is a polypropylene sealing rubber ring.
Compared with the prior art, the utility model discloses at least, following advantage has:
the utility model discloses a button cell is through setting up battery case, battery sealing washer, battery top cap subassembly and battery core subassembly to prevent pressing the disappointing structure and setting up in battery case's outside, make when battery internal pressure is too big, can carry out the pressure release exhaust operation through the pressure release groove of battery case bottom, can improve the rate of utilization of battery inner space from this, make battery capacity improve.
Drawings
Fig. 1 is a schematic structural view of a button cell according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a battery case of the button battery in fig. 1.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In one embodiment, a button cell includes: the battery comprises a battery shell, a battery sealing ring, a battery top cover assembly and a battery core assembly, wherein a battery core accommodating cavity is arranged in the battery shell, the battery core accommodating cavity comprises a battery core placing area and a packaging fixing area, a packaging protruding part is arranged between the battery core placing area and the packaging fixing area, the bottom edge of the battery core accommodating cavity is provided with an annular circular groove, the bottom of the battery shell is provided with a pressure relief groove, the bottom of the pressure relief groove is provided with a round angle structure, and the depth of the pressure relief groove is 0.1-0.2 mm; the opening end of the battery shell is also provided with a packaging bending part; the battery sealing ring comprises a sealing positioning part, a sealing isolation part and a sealing folding part, wherein the sealing positioning part is arranged on the packaging protruding part, the sealing isolation part is connected with the bottom of the sealing positioning part, the sealing folding part is connected with the top of the sealing positioning part, the sealing isolation part is attached to the end face of the packaging protruding part, and the sealing folding part is attached to the inner side wall of the packaging folding part; the battery top cover assembly comprises an upper top cover and a lower top cover, wherein the upper top cover and the lower top cover are both provided with a position avoiding bulge, the lower top cover is arranged on the sealing and positioning part, and the upper top cover is connected with the lower top cover; the battery core assembly comprises a battery core, electrolyte, a positive connecting piece and a negative connecting piece, wherein the battery core and the electrolyte are respectively arranged in the battery core placing area, the positive connecting piece is respectively connected with the positive electrode of the battery core and the lower top cover, the negative connecting piece is arranged at the bottom of the battery core accommodating cavity, and the negative connecting piece is respectively connected with the negative electrode of the battery core and the battery shell. The utility model discloses a button cell is through setting up battery case, battery sealing washer, battery top cap subassembly and battery core subassembly to prevent pressing the disappointing structure and setting up in battery case's outside, make when battery internal pressure is too big, can carry out the pressure release exhaust operation through the pressure release groove of battery case bottom, can improve the rate of utilization of battery inner space from this, make battery capacity improve.
The button cell is better explained to better understand the concept of the button cell. Referring to fig. 1 and fig. 2, a button cell 10 includes: the battery comprises a battery shell 100, a battery sealing ring 200, a battery top cover assembly 300 and a battery core assembly 400, wherein a battery cell accommodating cavity 110 is arranged in the battery shell 100, the battery cell accommodating cavity 110 comprises a battery cell placing area 111 and a packaging fixing area 112 which are sequentially connected, a packaging bulge part 120 is arranged between the battery cell placing area 111 and the packaging fixing area 112, an annular circular groove 113 is formed in the edge of the bottom of the battery cell accommodating cavity 110, a pressure relief groove 130 is formed in the bottom of the battery shell 100, a round angle structure 131 is formed in the bottom of the pressure relief groove 130, and the depth of the pressure relief groove 130 is 0.1-0.2 mm; the open end of the battery case 100 is also provided with a packing bent part 140. In this embodiment, the depth of the pressure relief groove is 0.15 mm.
It should be noted that the battery housing 100 is provided with the battery cell accommodating cavity 110 therein, so that the battery sealing ring 200, the battery top cover assembly 300 and the battery cell assembly 400 can be accommodated and placed. Specifically, electric core assembly 400 is placed in electric core placing area 111, and battery seal ring 200 and battery top cover assembly 300 are installed respectively in encapsulation fixed area 112, so, seal the operation of bending through the encapsulation portion of bending 140 to the open end of battery case 100 for encapsulation portion of bending 140 is buckled and is laminated to battery top cover assembly 300 on, holds chamber 110 with electric core from this and seals. Through placing the district 111 and the encapsulation fixed area 112 at electric core and set up encapsulation bellying 120 between, on the one hand, can play the effect of bearing the weight of the location to battery seal ring 200 and battery top cap subassembly 300, make battery seal ring 200 and battery top cap subassembly 300 install and hold the chamber 110 at electric core, on the other hand, encapsulation bellying 120 can improve battery case 100's structural strength, make and play certain buffering and supporting role when sealing the operation, so, can prevent to seal operating pressure too big and lead to electric core subassembly 400 in the district 111 to take place deformation. The annular circular groove 113 is formed in the bottom edge of the battery cell accommodating cavity 110, so that on one hand, the space in the battery cell accommodating cavity 110 can be increased, and the overall battery capacity is improved; on the other hand, after the electric core assembly 400 is placed, a certain gap exists between the electric core assembly 400 and the bottom of the electric core accommodating cavity 110, so that when the air pressure in the electric core accommodating cavity 110 is too large, the air pressure can be concentrated at the position of the circular groove 113, and after the pressure exceeds a set value, the pressure relief groove 130 at the bottom of the battery shell 100 can be broken by the air pressure, so that the pressure relief and exhaust operation is realized. Pressure relief groove 130 is seted up through the bottom at battery case 100, thereby can hold cavity 110 internal pressure at electric core and play the pressure release exhaust effect when too big, round structure 131 is seted up through the bottom at pressure relief groove 130, make pressure relief groove 130 and electric core hold between the cavity 110 structural strength reduce, when the pressure in electric core holds cavity 110 was too big, the pressure that electric core held cavity 110 can be earlier along the outside transmission of round structure 131 of pressure relief groove 130 bottom, make pressure relief groove 130 can break gradually along with the continuous grow of pressure, make pressure release exhaust operation safer from this.
In one embodiment, the cross section of the pressure relief groove is of a triangular structure, so that the overall structural strength can be enhanced, and the pressure relief and exhaust operation is safer; if again, the pressure relief groove can be the arc wall structure for whole circular groove structure or pressure relief groove, so, can select the shape of pressure relief groove according to the inner structure intensity of different button cell products for button cell's overall design's selectivity is stronger, and can make the pressure release exhaust operation effect that corresponds better.
Referring to fig. 1 again, the battery sealing ring 200 includes a sealing and positioning portion 210, a sealing and isolating portion 220 and a sealing folded portion 230, the sealing and positioning portion 210 is disposed on the packaging protrusion 120, the sealing and isolating portion 220 is connected to the bottom of the sealing and positioning portion 210, the sealing folded portion 230 is connected to the top of the sealing and positioning portion 210, the sealing and isolating portion 220 is attached to the end surface of the packaging protrusion 120, and the sealing folded portion 230 is attached to the inner sidewall of the packaging folded portion 140. In this embodiment, the battery sealing ring is a polypropylene sealing rubber ring.
It should be noted that the sealing and positioning portion 210 is disposed on the package protruding portion 120, so as to perform the function of installation and positioning, the sealing and isolating portion 220 is connected to the bottom of the sealing and positioning portion 210, and the sealing and isolating portion 220 is attached to the end surface of the package protruding portion 120, so that the cell assembly 400 in the cell placing region 111 can be sealed and isolated, thereby preventing the short circuit phenomenon inside the battery. Through set up sealed folded part 230 at the top of sealed location portion 210, and sealed folded part 230 and the laminating of the inside wall of encapsulation portion of bending 140, so, can seal when bending 140 at the encapsulation, sealed folded part 230 can be back laminating to battery top cap subassembly 300, plays the sealed effect of sealing from this.
Referring to fig. 1 again, the top cap assembly 300 includes an upper top cap 310 and a lower top cap 320, the upper top cap 310 and the lower top cap 320 are both provided with a space-avoiding protrusion 330, the lower top cap 320 is disposed on the sealing and positioning portion 210, and the upper top cap 310 is connected to the lower top cap 320.
It should be noted that the structural strength of the top cap assembly 300 can be improved by disposing the upper top cap 310 and the lower top cap 320 to be overlapped with each other; the space utilization rate inside the cell accommodating cavity 110 can be improved by providing the avoiding protrusions 330 on the upper top cover 310 and the lower top cover 320, thereby improving the capacity of the battery.
In one embodiment, the upper top cover is of a nickel metal sheet structure, and the lower top cover is of an aluminum metal sheet structure, so that the overall structural strength can be improved, and the conductivity of the battery can be improved; for another example, the surface of the lower top cover is provided with an anti-corrosion film, preferably, the anti-corrosion film is an alumina film, so that the lower top cover can be prevented from being corroded by the internal electrolyte, and the quality of the whole battery can be improved.
Cell assembly 400 includes electric core 410, electrolyte, anodal connection piece 420 and negative pole connection piece 430, and electric core 410 sets up respectively in electric core places district 111 with electrolyte, and anodal connection piece 420 is connected with electric core 410's positive pole and lower top cap 320 electricity respectively, and negative pole connection piece 430 sets up in the bottom that electric core held chamber 110, and negative pole connection piece 430 is connected with electric core 410's negative pole and battery case 100 electricity respectively.
It should be noted that the battery cell 410 and the electrolyte are respectively disposed in the battery cell placement area 111, the battery cell 410 is connected to the lower top cap through the positive connection sheet 420, and the battery cell 410 is connected to the battery case 100 through the negative connection sheet 430, so that the inside of the battery cell accommodating cavity 110 forms conductive communication, and thus the discharging operation of the button battery can be realized.
Compared with the prior art, the utility model discloses at least, following advantage has:
the utility model discloses a button cell 10 is through setting up battery case 100, battery sealing washer 200, battery top cap subassembly 300 and electric core subassembly 400 to prevent pressing the disappointing structure and set up in battery case 100's outside, make when battery internal pressure is too big, can carry out the exhaust operation of pressure release through the pressure release groove 130 of battery case 100 bottom, can improve the rate of utilization of battery inner space from this, make battery capacity improve.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A button cell, comprising:
the battery comprises a battery shell, wherein a battery cell accommodating cavity is arranged in the battery shell, the battery cell accommodating cavity comprises a battery cell placing area and a packaging fixing area, a packaging protruding part is arranged between the battery cell placing area and the packaging fixing area, the bottom edge of the battery cell accommodating cavity is provided with an annular circular groove, the bottom of the battery shell is provided with a pressure relief groove, the bottom of the pressure relief groove is provided with a round angle structure, and the depth of the pressure relief groove is 0.1-0.2 mm; the opening end of the battery shell is also provided with a packaging bending part;
the battery sealing ring comprises a sealing and positioning part, a sealing and isolating part and a sealing and folding part, wherein the sealing and positioning part is arranged on the packaging protruding part, the sealing and isolating part is connected with the bottom of the sealing and positioning part, the sealing and folding part is connected with the top of the sealing and positioning part, the sealing and isolating part is attached to the end face of the packaging protruding part, and the sealing and folding part is attached to the inner side wall of the packaging and folding part;
the battery top cover assembly comprises an upper top cover and a lower top cover, the upper top cover and the lower top cover are both provided with a position avoiding bulge, the lower top cover is arranged on the sealing and positioning part, and the upper top cover is connected with the lower top cover; and
the battery core assembly comprises a battery core, electrolyte, a positive connecting piece and a negative connecting piece, wherein the battery core is respectively provided with the electrolyte in the battery core placing area, the positive connecting piece is respectively provided with the positive pole of the battery core and electrically connected with the lower top cover, the negative connecting piece is arranged at the bottom of the battery core accommodating cavity, and the negative connecting piece is respectively provided with the negative pole of the battery core and electrically connected with the battery shell.
2. The button cell as defined in claim 1, wherein the cross section of the pressure relief groove is a triangular structure.
3. The button cell according to claim 1, wherein the depth of the pressure relief groove is 0.15 mm.
4. The button cell according to claim 1, wherein the pressure relief groove is a full round groove structure.
5. The button cell according to claim 1, wherein the pressure relief groove is an arc-shaped groove structure.
6. The button cell as defined in claim 1, wherein the upper cap is of a nickel metal sheet structure.
7. The button cell according to claim 1, wherein the lower cap is an aluminum sheet metal structure.
8. The button cell according to claim 7, wherein the surface of the lower cap is provided with an anti-corrosion film.
9. The button cell according to claim 8, wherein the corrosion protection film is an aluminum oxide film.
10. The button cell according to claim 1, wherein the cell sealing ring is a polypropylene sealing rubber ring.
CN201921047836.1U 2019-07-04 2019-07-04 Button cell Active CN210245557U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921047836.1U CN210245557U (en) 2019-07-04 2019-07-04 Button cell

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921047836.1U CN210245557U (en) 2019-07-04 2019-07-04 Button cell

Publications (1)

Publication Number Publication Date
CN210245557U true CN210245557U (en) 2020-04-03

Family

ID=69989921

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921047836.1U Active CN210245557U (en) 2019-07-04 2019-07-04 Button cell

Country Status (1)

Country Link
CN (1) CN210245557U (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112366420A (en) * 2020-11-09 2021-02-12 深圳市合壹新能技术有限公司 Battery shell structure and button cell
WO2021223444A1 (en) * 2020-05-06 2021-11-11 广东微电新能源有限公司 Button cell or cylindrical cell
CN114284542A (en) * 2021-12-28 2022-04-05 山西中科华孚汽车动力研究总院有限公司 Battery manufacturing method and battery
WO2022206897A1 (en) * 2021-03-31 2022-10-06 蜂巢能源科技(无锡)有限公司 Battery and assembly process therefor
CN115395149A (en) * 2022-09-30 2022-11-25 路华置富电子(东莞)有限公司 Laminated button battery with ruffle structure
CN115425341A (en) * 2022-09-30 2022-12-02 路华置富电子(东莞)有限公司 Winding type button battery with ruffle structure

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021223444A1 (en) * 2020-05-06 2021-11-11 广东微电新能源有限公司 Button cell or cylindrical cell
CN112366420A (en) * 2020-11-09 2021-02-12 深圳市合壹新能技术有限公司 Battery shell structure and button cell
WO2022095342A1 (en) * 2020-11-09 2022-05-12 深圳市合壹新能技术有限公司 Battery housing structure and button battery
WO2022206897A1 (en) * 2021-03-31 2022-10-06 蜂巢能源科技(无锡)有限公司 Battery and assembly process therefor
CN114284542A (en) * 2021-12-28 2022-04-05 山西中科华孚汽车动力研究总院有限公司 Battery manufacturing method and battery
CN114284542B (en) * 2021-12-28 2024-02-06 山西中科华孚电池研究总院有限公司 Manufacturing method of battery and battery
CN115395149A (en) * 2022-09-30 2022-11-25 路华置富电子(东莞)有限公司 Laminated button battery with ruffle structure
CN115425341A (en) * 2022-09-30 2022-12-02 路华置富电子(东莞)有限公司 Winding type button battery with ruffle structure

Similar Documents

Publication Publication Date Title
CN210245557U (en) Button cell
EP3813171B1 (en) Button battery for improving utilization rate of radial space
CN210245625U (en) Button cell packaging structure
US3891462A (en) Galvanic cell structure
JP2010520580A (en) Battery and battery seal assembly for easy assembly
JP4312296B2 (en) Secondary battery cap assembly
CN210956728U (en) Alkaline manganese cell sealing structure and alkaline manganese cell
CN214957234U (en) Miniature lithium ion battery with explosion-proof trace
CN203707194U (en) Secondary battery
CN210403778U (en) Button cell for improving radial space utilization rate
CN112201839A (en) Lithium battery structure
CN111384317A (en) Lithium ion battery
CN217405562U (en) Battery upper cover and battery
CN210245652U (en) Cylindrical lithium battery
CN210723227U (en) Novel sealing structure of cylindrical lithium battery
CN111584771B (en) Battery with safety valve cap
CN211789105U (en) Button cell
CN211350698U (en) Button cell
CN210167462U (en) Button type lithium ion battery
CN207719338U (en) Combined cap integrated coating battery
CN110880564A (en) Novel lithium battery shell and shell cover applying same
CN219321480U (en) Top cap subassembly and battery cell
CN213989109U (en) Miniature lithium ion battery
CN210245622U (en) Compound button type lithium-manganese battery
CN214280048U (en) Battery with a battery cell

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant