CN111477791A - Button cell - Google Patents
Button cell Download PDFInfo
- Publication number
- CN111477791A CN111477791A CN202010245517.2A CN202010245517A CN111477791A CN 111477791 A CN111477791 A CN 111477791A CN 202010245517 A CN202010245517 A CN 202010245517A CN 111477791 A CN111477791 A CN 111477791A
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- Prior art keywords
- battery
- tab
- inner core
- ring body
- steel sheet
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 55
- 239000010959 steel Substances 0.000 claims abstract description 55
- 230000000694 effects Effects 0.000 abstract description 10
- 238000001746 injection moulding Methods 0.000 abstract description 4
- 238000011112 process operation Methods 0.000 abstract description 4
- 238000003466 welding Methods 0.000 description 35
- 238000005452 bending Methods 0.000 description 7
- 238000007789 sealing Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 238000009413 insulation Methods 0.000 description 4
- 241000463219 Epitheca Species 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 241000237983 Trochidae Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- FBDMJGHBCPNRGF-UHFFFAOYSA-M [OH-].[Li+].[O-2].[Mn+2] Chemical compound [OH-].[Li+].[O-2].[Mn+2] FBDMJGHBCPNRGF-UHFFFAOYSA-M 0.000 description 1
- -1 alkaline Chemical compound 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- HTQOEHYNHFXMJJ-UHFFFAOYSA-N oxosilver zinc Chemical compound [Zn].[Ag]=O HTQOEHYNHFXMJJ-UHFFFAOYSA-N 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/216—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for button or coin cells
-
- 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
Abstract
The invention discloses a button battery, which comprises a battery upper shell, a battery bottom shell and a battery inner core, wherein the battery inner core is contained in the battery upper shell, and the battery upper shell is buckled on the battery bottom shell; the battery upper shell comprises a negative steel sheet and an insulating ring body, and the insulating ring body is arranged on the negative steel sheet. Compared with the conventional button battery, the button battery has the advantages that the process operation of injection molding on the side wall of the shell can be saved, so that the effects of easiness in assembly, saving in assembly steps and increasing in insulativity can be effectively realized.
Description
Technical Field
The invention relates to the field of button batteries, in particular to a button battery.
Background
Common button cells have several chemical compositions: carbon, alkaline, zinc-silver oxide, zinc-air, lithium-manganese dioxide, nickel cadmium rechargeable coin cells, nickel hydrogen rechargeable coin cells, and the like. If the single body and the lamination are distinguished according to the shape. In detail, the carbon button cell is most common and cheapest, is alkaline and expensive, but has good discharge effect. Both voltages are 1.5V, from alkaline AG1 to AG13, with nominal capacities varying from about 15mAh to 140 mAh. Is suitable for microampere-level discharge requirements. It is used in calculator, electronic toy, hearing aid, lighter, watch, etc. Besides being capable of supplying power to single batteries, button batteries have also been developed, i.e., a plurality of button batteries are stacked due to their small size.
In the existing button cell, generally, after the upper shell and the lower shell are assembled, a sealing ring is required to be arranged in a gap between the upper shell and the lower shell, so that the upper shell can be stably embedded in the lower shell, the sealing performance is better, glue injection operation is possibly required to be performed on the button cell with the assembled sealing ring, the assembling difficulty of the button cell is greatly increased by the mode, the process is more complex, the time cost of assembly is increased, and the assembly efficiency is reduced.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a button cell which is easy to assemble, saves assembling steps and can increase insulativity.
The purpose of the invention is realized by the following technical scheme:
a button cell, comprising: the battery comprises a battery upper shell, a battery bottom shell and a battery inner core, wherein the battery inner core is contained in the battery upper shell, and the battery upper shell is buckled on the battery bottom shell;
the battery upper shell comprises a negative steel sheet and an insulating ring body, and the insulating ring body is arranged on the negative steel sheet.
In one embodiment, the battery bottom case comprises a positive steel sheet and an insulating sleeve body, wherein the insulating sleeve body is arranged on the positive steel sheet.
In one embodiment, an installation cavity is formed in the insulating sleeve body, and the battery upper shell and the battery inner core are accommodated in the installation cavity, so that the outer side wall of the insulating ring body is attached to the inner side wall of the insulating sleeve body.
In one embodiment, the battery bottom case is a steel case structure, and the battery upper case and the battery inner core are accommodated in the steel case structure, so that the outer side wall of the insulating ring body is attached to the inner side wall of the steel case structure.
In one embodiment, a cell fixing cavity is formed in the insulating ring body, and the battery core is disposed in the cell fixing cavity.
In one embodiment, the insulating ring body is a PP insulating layer.
In one embodiment, the thickness of the insulation ring body is 0.2 mm-0.5 mm.
In one embodiment, the battery inner core comprises a soft package inner core, a positive electrode tab and a negative electrode tab, the soft package inner core is accommodated in the battery upper shell, one end of the positive electrode tab is arranged on the soft package inner core, the other end of the positive electrode tab is welded on the battery bottom shell, one end of the negative electrode tab is arranged on the soft package inner core, and the other end of the negative electrode tab is welded on the negative electrode steel sheet.
In one embodiment, the insulating ring body is provided with two first tab avoiding gaps, and the two first tab avoiding gaps are symmetrically arranged.
In one embodiment, the battery bottom case is provided with at least one second tab avoiding gap, and the second tab avoiding gap is aligned with one of the first tab avoiding gaps.
Compared with the prior art, the invention has the following advantages and beneficial effects:
compared with the conventional button battery, the button battery has the advantages that the process operation of injection molding on the side wall of the shell can be saved, so that the effects of easiness in assembly, saving in assembly steps and increasing in insulativity can be effectively realized.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a button cell according to an embodiment of the invention;
FIG. 2 is a schematic structural diagram of a battery upper case of the button battery shown in FIG. 1;
fig. 3 is a schematic structural diagram of a battery bottom case of the button battery shown in fig. 1;
FIG. 4 is a schematic structural diagram of an inner core of the button cell shown in FIG. 1;
FIG. 5 is a schematic structural view of the button cell shown in FIG. 1 from another view angle;
FIG. 6 is a schematic structural diagram of the button cell shown in FIG. 1 from another view angle;
FIG. 7 is a schematic structural view of another embodiment of the button cell shown in FIG. 1;
fig. 8 is a schematic structural view of a button cell according to another embodiment shown in fig. 1.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This 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 the existing button cell, generally, after the upper shell and the lower shell are assembled, a sealing ring is required to be arranged in a gap between the upper shell and the lower shell, so that the upper shell can be stably embedded in the lower shell, the sealing performance is better, glue injection operation is possibly required to be performed on the button cell with the assembled sealing ring, the assembling difficulty of the button cell is greatly increased by the mode, the process is more complex, the time cost of assembly is increased, and the assembly efficiency is reduced. In one embodiment, a button cell includes: the battery comprises a battery upper shell, a battery bottom shell and a battery inner core, wherein the battery inner core is contained in the battery upper shell, and the battery upper shell is buckled on the battery bottom shell; the battery upper shell comprises a negative steel sheet and an insulating ring body, and the insulating ring body is arranged on the negative steel sheet. The battery bottom shell comprises a positive steel sheet and an insulating sleeve body, and the insulating sleeve body is arranged on the positive steel sheet. So, through the combination of changing the structure of battery epitheca into plastic side and negative pole steel sheet, compare in current button cell, can save the technology operation of moulding plastics on the casing lateral wall to can realize easily assembling, save the assembly step and increase insulating nature's effect effectively.
Referring to fig. 1, a button cell includes: the battery comprises a battery upper shell 100, a battery bottom shell 200 and a battery inner core 300, wherein the battery inner core 300 is accommodated in the battery upper shell 100, and the battery upper shell 100 is buckled on the battery bottom shell 200.
It should be noted that the battery top case 100 and the battery bottom case 200 are used for wrapping the battery core 300, and the battery core 300 is used for providing power.
Referring to fig. 2, the battery upper case 100 includes a negative steel sheet 110 and an insulating ring 120 disposed on the negative steel sheet. The negative steel sheet 110 is used for fixing an insulating ring; the insulating ring body 120 is used for wrapping the whole battery inner core 300, and enables the battery upper shell and the battery lower shell to be insulated, namely after mutual isolation, the battery lower shell and the battery upper shell cannot be conducted mutually, and compared with the existing button battery, the process operation of injection molding on the side wall of the shell can be saved, so that the effects of easy assembly, assembly step saving and insulation property increasing can be effectively realized.
Referring to fig. 3, in one embodiment, the battery bottom case 200 includes a positive steel sheet 210 and an insulating sleeve 220 disposed on the positive steel sheet. It should be noted that the positive steel sheet 210 is used for realizing the power output of the positive electrode, and the insulating sleeve 220 is used for realizing the mutual insulation with the battery upper shell and is used for being sleeved on the insulating ring body 120 of the battery upper shell, so that the mutual pressing and fixing of the whole battery upper shell can be realized, and the assembly of the battery is more stable and more reliable.
It should be further noted that an installation cavity is formed in the insulating sleeve body, and the battery upper shell and the battery inner core are accommodated in the installation cavity, so that the outer side wall of the insulating ring body is attached to the inner side wall of the insulating sleeve body. So, through setting up the installation cavity for place battery core, play the effect of protection battery core, thereby can prolong the life of battery.
In another embodiment, the battery bottom case is a steel case structure, and the battery upper case and the battery inner core are accommodated in the steel case structure, so that the outer side wall of the insulating ring body is attached to the inner side wall of the steel case structure. So, through setting up the whole casing that is the steel construction, also can realize the cladding to the battery epitheca to compare in the battery drain pan of plastic lateral wall, the battery drain pan structure of steel construction is firmer, and the effect of protection battery is better.
It should be noted that an electric core fixing cavity is formed in the insulating ring body, and the battery inner core is arranged in the electric core fixing cavity. So, through setting up the fixed cavity of electric core, can put whole battery epitheca and battery inner core cover including, protection battery inner core.
It should be noted that the insulating ring body is a PP insulating layer. Namely, the insulating ring body is made of PP insulating material, and the insulating sleeve body is also made of PP insulating material. Thus, the insulating function can be realized, and the battery can not be short-circuited.
The thickness of the insulating ring body is 0.2 mm-0.5 mm. So, through setting up the insulating ring body that thickness is 0.2mm ~ 0.5mm, can play the effect of fixed battery inner core on the one hand, on the other hand can play the insulating effect of preventing the short circuit again.
It should be further noted that, referring to fig. 4, the battery inner core 300 includes a soft package inner core 310, an anode tab 320 and a cathode tab 330, the soft package inner core is accommodated in the battery upper shell, one end of the anode tab is disposed on the soft package inner core, the other end of the anode tab is welded on the battery bottom shell, one end of the cathode tab is disposed on the soft package inner core, and the other end of the cathode tab is welded on the cathode steel sheet. Thus, the function of power output of the battery can be realized.
It can be understood that all can be provided with anodal utmost point ear and negative pole utmost point ear among the present button cell, anodal utmost point ear and negative pole utmost point ear all set up in soft-packaged electric core subassembly both sides moreover, go up anodal drain pan then need wrap up anodal utmost point ear, negative pole utmost point ear and soft-packaged electric core subassembly in the inside completely from this, such structure makes button cell's overall structure great, can't reach miniaturized design requirement.
Please refer to fig. 2, the insulating ring body 120 is provided with two first tab avoiding notches 121, and the two first tab avoiding notches are symmetrically arranged. So, keep away a breach 121 through setting up two first utmost point ears, can be so that anodal utmost point ear and negative pole utmost point ear holding should keep away a breach in to can reduce the whole volume of battery, make button cell under the unchangeable circumstances of battery capacity, its overall structure is more small and exquisite.
Please refer to fig. 3 again, at least one second tab avoiding gap 230 is formed on the battery bottom case 200, and the second tab avoiding gap is aligned with one of the first tab avoiding gaps. So, keep away a breach 230 through setting up the second utmost point ear, keep away a breach alignment back with first utmost point ear, formed the holding region of utmost point ear, when anodal utmost point ear or negative pole utmost point ear set up in this holding region, then can conveniently draw forth utmost point ear, and can reduce the diameter of box hat to reduce button cell's whole volume.
Further, in an embodiment, two second tab avoiding notches 230 are formed on the side wall of the battery bottom case 200, and the two second tab avoiding notches are respectively aligned with the two first tab avoiding notches in a one-to-one correspondence manner, that is, when the battery top case is fastened to the battery bottom case, the first tab avoiding notches are aligned with the second tab avoiding notches. It should be noted that, after the first tab avoiding notch and the second tab avoiding notch are aligned, the positive tab and the negative tab can be respectively accommodated in the two aligned notches, that is, a part of the positive tab is accommodated in one aligned notch, and a part of the negative tab is accommodated in the other aligned notch. Therefore, compared with the button cell without an opening on the existing shell, the button cell provided by the invention can effectively reduce the size of the shell of the positive electrode bottom shell, so that the button cell is smaller in size, simpler in structure and easier to assemble.
Specifically, referring to fig. 4 and 5, the negative electrode tab 330 includes a connecting piece 331 and a negative electrode welding piece 332, one end of the connecting piece is disposed on the soft package inner core, the other end of the connecting piece is connected to the negative electrode welding piece, the connecting piece is accommodated in an opening where the first electrode tab avoiding gap and the second electrode tab avoiding gap are aligned, and the negative electrode welding piece is exposed on the battery upper case. It should be noted that the connecting sheet 331 is used for connecting the negative electrode sheet in the soft package core, and can also play a role in fixing the negative electrode tab; the negative electrode welding sheet 332 is used for leading out a negative electrode of the battery and is welded on the battery upper shell to play a role in electrically connecting the soft package inner core and the battery upper shell. Meanwhile, the negative electrode welding piece is exposed on the negative electrode steel sheet, namely the negative electrode lug is welded on the negative electrode steel sheet and exposed outside the negative electrode steel sheet, so that the operation of conveniently welding the negative electrode lug can be realized.
It should be further noted that the connecting piece and the negative electrode welding piece are integrally formed. The connecting piece and the negative electrode welding piece are perpendicular to each other. Therefore, the vertical negative electrode lug is arranged, the negative electrode of the battery can be conveniently led out, and meanwhile, the structural stability can be effectively improved due to the integrally formed structure.
Referring to fig. 4 and 5, the positive electrode tab 320 includes a bending piece 321 and a positive electrode welding piece 322, one end of the bending piece is used for connecting the soft package inner core, the other end of the bending piece is bent and extended to be connected with the positive electrode welding piece, the bending piece is accommodated in an opening aligned with the first tab avoiding gap and the second tab avoiding gap, and the positive electrode welding piece is exposed on the battery bottom case. It should be noted that the bending piece 321 is used for leading out the positive electrode of the battery, that is, the bending piece is used for connecting the positive electrode piece in the soft package inner core, and can also play a role in fixing the positive electrode tab; the positive electrode welding piece 322 is used for leading out the positive electrode of the battery to the outside of the battery, namely, the positive electrode welding piece is arranged outside the battery bottom shell, and the positive electrode lug is conveniently welded.
It should be noted that the bending piece and the positive electrode welding piece are integrally formed. So, through setting up the integrated into one piece structure, can improve the structural stability of anodal utmost point ear.
It can be understood that the positive tab of the existing button battery is generally welded on the bottom shell, and the negative tab is welded on the top shell, however, the existing tab of the existing button battery is not convenient to install and weld when the battery is assembled because the existing tab is very soft and has insufficient hardness no matter the bottom shell or the top shell; in addition, the existing top case and bottom case are easy to have poor structural stability or insulation after being assembled.
In an embodiment, referring to fig. 6, the button cell further includes an upper steel sheet 400 and a lower steel sheet 500, the upper steel sheet is used for being welded on the cell upper case, and the lower steel sheet is used for being welded on the cell bottom case. So, through setting up down the steel sheet, can draw forth anodal utmost point ear, avoid it to be crushed by pressure when the assembly, also conveniently assemble simultaneously. Similarly, the upper steel sheet is arranged, so that a negative pole lug can be led out, the negative pole lug is prevented from being crushed during assembly, and the assembly is also facilitated.
Further, the upper steel sheet 400 is welded to the upper surface of the battery upper case 100, and the lower steel sheet 500 is welded to the lower surface of the battery bottom case 200. The upper steel sheet 400 is used for leading out negative electrode tabs; the lower steel sheet 500 is used for leading out the positive lug, so that the positive lug can be led out and assembled, assembly is facilitated, and the steel structure is utilized, so that the hardness of the positive lug can be improved, and subsequent insertion and assembly are facilitated.
Specifically, referring to fig. 7, the upper steel sheet 400 includes a first welding sheet 410 and a first external sheet 420, the first welding sheet 410 is disposed on the upper surface of the battery upper case 100, and the first external sheet is connected to the first welding sheet. It should be noted that the first welding sheet 410 is used for welding on the steel can, and the first external sheet 420 is used for connecting an external device or device.
It should be noted that the first welding sheet body and the first external sheet body are of an integrally formed structure. The first welding sheet is welded to the upper surface of the battery upper case 100 by resistance welding or laser welding. In this embodiment, the first welding sheet body and the first external sheet body are perpendicular to each other. So, through setting up the integrated into one piece structure for the structure is more stable, carries out welding operation more side.
Referring to fig. 8, the lower steel sheet 500 includes a second welding sheet 510 disposed on the upper surface of the battery bottom case 200, and a second external sheet 520 connected to the second welding sheet. It should be noted that the second welding sheet is used for welding on the steel shell, so that the whole lower steel sheet 500 can be fixed; the second outer tab body is used for connecting an external device.
It should be noted that the second welding sheet body and the second external sheet body are an integrally formed structure. The second welding sheet is welded to the upper surface of the battery bottom case 200 in a resistance welding or laser welding manner. The second welding sheet body and the second outer connecting sheet body are arranged perpendicular to each other. So, through setting up integrated into one piece structure, can be so that the structure of steel sheet is more stable, and the welding is more firm.
Compared with the prior art, the invention has the following advantages and beneficial effects:
compared with the conventional button battery, the button battery has the advantages that the process operation of injection molding on the side wall of the shell can be saved, so that the effects of easiness in assembly, saving in assembly steps and increasing in insulativity can be effectively realized.
The above embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A button cell, comprising: the battery comprises a battery upper shell, a battery bottom shell and a battery inner core, wherein the battery inner core is contained in the battery upper shell, and the battery upper shell is buckled on the battery bottom shell;
the battery upper shell is characterized by comprising a negative steel sheet and an insulating ring body, wherein the insulating ring body is arranged on the negative steel sheet.
2. The button cell as recited in claim 1, wherein the cell bottom case comprises a positive steel sheet and an insulating sleeve body, and the insulating sleeve body is disposed on the positive steel sheet.
3. The button battery as recited in claim 2, wherein the insulating sleeve body has a mounting cavity therein, and the battery top case and the battery core are received in the mounting cavity such that the outer sidewall of the insulating ring body fits against the inner sidewall of the insulating sleeve body.
4. The button cell as claimed in claim 1, wherein the bottom case is a steel case structure, and the upper case and the inner core are accommodated in the steel case structure, so that the outer side wall of the insulating ring body is attached to the inner side wall of the steel case structure.
5. The button cell of claim 1, wherein the insulating ring body defines a cell fixing cavity therein, and the cell core is disposed in the cell fixing cavity.
6. The button cell according to claim 1, wherein the insulating ring body is a PP insulating layer.
7. The button cell according to claim 1, wherein the thickness of the insulating ring body is 0.2mm to 0.5 mm.
8. The button battery according to claim 1, wherein the battery inner core comprises a soft package inner core, an anode tab and a cathode tab, the soft package inner core is accommodated in the battery upper shell, one end of the anode tab is arranged on the soft package inner core, the other end of the anode tab is welded on the battery bottom shell, one end of the cathode tab is arranged on the soft package inner core, and the other end of the cathode tab is welded on the cathode steel sheet.
9. The button battery as claimed in claim 1, wherein the insulating ring body is provided with two first tab avoiding gaps, and the two first tab avoiding gaps are symmetrically arranged.
10. The button cell of claim 9, wherein the bottom shell has at least one second tab clearance gap aligned with one of the first tab clearance gaps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010245517.2A CN111477791A (en) | 2020-03-31 | 2020-03-31 | Button cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010245517.2A CN111477791A (en) | 2020-03-31 | 2020-03-31 | Button cell |
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| CN111477791A true CN111477791A (en) | 2020-07-31 |
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| CN202010245517.2A Pending CN111477791A (en) | 2020-03-31 | 2020-03-31 | Button cell |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112803125A (en) * | 2021-02-01 | 2021-05-14 | 广州鹏辉能源科技股份有限公司 | Tab, soft-package button type lithium ion battery and manufacturing method thereof |
| CN114156575A (en) * | 2020-08-17 | 2022-03-08 | 华为技术有限公司 | Button cell, battery module and electronic equipment |
| WO2022088503A1 (en) * | 2020-11-02 | 2022-05-05 | 深圳聚锂能源有限公司 | Button battery shell and button battery |
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| CN112803125B (en) * | 2021-02-01 | 2023-08-29 | 广州鹏辉能源科技股份有限公司 | Soft package button type lithium ion battery and manufacturing method thereof |
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