CN111312978A - Winding type soft package button battery - Google Patents
Winding type soft package button battery Download PDFInfo
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- CN111312978A CN111312978A CN202010118253.4A CN202010118253A CN111312978A CN 111312978 A CN111312978 A CN 111312978A CN 202010118253 A CN202010118253 A CN 202010118253A CN 111312978 A CN111312978 A CN 111312978A
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- packaging film
- winding type
- button battery
- packaging
- negative pole
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- 238000004804 winding Methods 0.000 title claims abstract description 49
- 239000012785 packaging film Substances 0.000 claims abstract description 71
- 229920006280 packaging film Polymers 0.000 claims abstract description 71
- 239000010410 layer Substances 0.000 claims description 63
- 229910052782 aluminium Inorganic materials 0.000 claims description 28
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 27
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 26
- 229910052802 copper Inorganic materials 0.000 claims description 26
- 239000010949 copper Substances 0.000 claims description 26
- 238000004806 packaging method and process Methods 0.000 claims description 15
- 239000004677 Nylon Substances 0.000 claims description 10
- 229920001778 nylon Polymers 0.000 claims description 10
- 238000005304 joining Methods 0.000 claims description 9
- 239000003292 glue Substances 0.000 claims description 8
- 239000012790 adhesive layer Substances 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims 3
- 238000003475 lamination Methods 0.000 claims 3
- 230000006872 improvement Effects 0.000 description 8
- 238000005538 encapsulation Methods 0.000 description 6
- 239000011257 shell material Substances 0.000 description 6
- 238000007789 sealing Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000003466 welding Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000007872 degassing Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000747 cardiac effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000005096 rolling process Methods 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0422—Cells or battery with cylindrical casing
- H01M10/0427—Button cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0431—Cells with wound or folded electrodes
-
- 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/109—Primary casings; Jackets or wrappings characterised by their shape or physical structure of button or coin shape
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
- H01M50/538—Connection of several leads or tabs of wound or folded electrode stacks
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention belongs to the technical field of batteries, and particularly relates to a winding type soft package button battery which comprises a first packaging film, a second packaging film and a winding type bare cell packaged between the first packaging film and the second packaging film, wherein an anode tab is led out from one end of the winding type bare cell, a cathode tab is led out from the other end of the winding type bare cell, the anode tab and the cathode tab are respectively provided with a connecting area and an insulating protection area, the connecting area of the anode tab is in conductive connection with the inner surface of the first packaging film, the connecting area of the cathode tab is in conductive connection with the inner surface of the second packaging film, and the outer surfaces of the first packaging film and the second packaging film are respectively provided with a conductive area. Compared with the prior art, the invention avoids the mode of leading out the positive and negative lugs by adopting the conventional soft package button battery, and the battery safety is high.
Description
Technical Field
The invention belongs to the technical field of batteries, and particularly relates to a winding type soft package button battery.
Background
Button cells are also known as button cells and refer to cells that have a physical size similar to a small button. The button cell is widely applied to various miniature electronic products due to small body size, the diameter is from 4.8mm to 30mm, and the thickness is from 1.0mm to 7.7 mm; the back-up power supply is generally used for various electronic products, such as computer mainboards, electronic watches, electronic dictionaries, electronic scales, remote controllers, electric toys, cardiac pacemakers, electronic hearing aids, counters, cameras and the like.
Most of the existing button batteries adopt a steel shell structure, and an upper cover and a lower shell are sealed together through a wrapping edge. The button cell with the steel shell has the advantages that the upper cover and the lower shell can be used as a positive electrode and a negative electrode respectively, and the finished product is very convenient to assemble. However, because the pressure ratio that the steel shell material can bear is relatively large, when the electric core has an acute short circuit, the gas generated by the chemical reaction in the electric core cannot be discharged in time, and there is a risk of explosion.
Also have the button cell who adopts soft package structure on the market at present, adopt the plastic-aluminum membrane to encapsulate, the pressure ratio that electric core inside can bear is less, does not have the explosion risk, but soft package button cell need draw forth positive and negative pole ear alone, needs the antipodal ear to carry out secondary welding during the finished product equipment, relatively more troublesome in the production operation.
Disclosure of Invention
The invention aims to: aiming at the defects of the prior art, the winding type soft package button battery is provided, the mode that the positive and negative electrode lugs are led out by the conventional soft package button battery is avoided, and the battery safety is high.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a soft packet of button cell of coiling formula, include first packaging film, second packaging film and encapsulate in first packaging film with the naked electric core of coiling formula between the second packaging film, anodal utmost point ear has been drawn forth to the one end of the naked electric core of coiling formula, negative pole utmost point ear has been drawn forth to the other end of the naked electric core of coiling formula, anodal utmost point ear with negative pole utmost point ear all is provided with joining region and insulating protection zone, the joining region of anodal utmost point ear with the internal surface of first packaging film is electrically conductive to be connected, the joining region of negative pole utmost point ear with the internal surface of second packaging film is electrically conductive to be connected, first packaging film with the surface of second packaging film all is provided with the conductive region.
As an improvement of the winding type soft package button battery, the first packaging film and the second packaging film both comprise a pit part and an encapsulation part, the winding type bare cell is arranged in the pit part, and the winding type bare cell is encapsulated by the encapsulation part. Form pit portion at first wrapping film and second wrapping film through the mode of punching press to hold the naked electric core of coiling formula that has certain thickness.
As an improvement of the winding type soft package button battery, the first packaging film sequentially comprises a nylon adhesive layer, an aluminum layer and a PP layer from outside to inside, a first aluminum layer exposed area is arranged on the inner surface of the pit portion of the first packaging film, and a second aluminum layer exposed area is arranged on the outer surface of the pit portion of the first packaging film.
As an improvement of the wound soft-package button battery, the connection region of the positive electrode tab is connected with the first aluminum layer exposed region, and the second aluminum layer exposed region is the conductive region. When the connecting structure is used, the connecting conductive area (the second aluminum layer exposed area) is used for being connected with the positive electrode of the winding type soft package button battery. Specifically, the aluminum layer of the pit portion is conductively connected, so that the conductive connection with the positive electrode lug is realized, and finally the conductive connection with the positive electrode of the winding type soft package button battery is realized.
As an improvement of the winding type soft package button battery, the second packaging film sequentially comprises a nylon glue layer, a copper layer and a PP layer from outside to inside, a first copper layer exposed area is arranged on the inner surface of the pit portion of the second packaging film, and a second copper layer exposed area is arranged on the outer surface of the pit portion of the second packaging film.
As an improvement of the winding type soft package button battery, the connecting area of the negative electrode tab is connected with the exposed area of the first copper layer, and the exposed area of the second copper layer is the conductive area. When the device is used, the connection with the negative electrode of the winding type bare cell is realized through the connection conductive area (the second copper layer exposed area). Specifically, the negative electrode tab is conductively connected with the copper layer of the pit portion, so that the negative electrode tab is conductively connected with the negative electrode tab, and finally the negative electrode of the winding type soft package button battery is conductively connected.
As an improvement of the winding type soft package button battery, after the packaging is finished, the packaging part is bent upwards or downwards to form a folded edge structure with folds. After the packaging part is packaged, the air bag is punctured and the packaging part is completely sealed after the procedures of baking, liquid injection, formation, degassing and the like, so that the winding type soft package button battery with the arc-shaped sealing edge is formed, and the arc-shaped sealing edge is bent upwards or downwards to form a folded edge structure with folds.
The winding type bare cell is formed by sequentially stacking and winding a positive plate, a negative plate and a diaphragm arranged between the positive plate and the negative plate at intervals, wherein a positive electrode tab is connected with the positive plate, and a negative electrode tab is connected with the negative plate.
As an improvement of the winding type soft package button battery, the positive electrode tab and the negative electrode tab are both located at the winding center of the winding type bare cell, or the positive electrode tab and the negative electrode tab are both located at the edge of the winding type bare cell.
As an improvement of the winding type soft pack button battery, one of the positive electrode tab and the negative electrode tab is located at the winding center of the winding type bare cell, and the other one is located at the edge of the winding type bare cell.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the positive electrode tab led out from the winding type bare cell is in conductive connection with the first packaging film, the negative electrode tab is in conductive connection with the second packaging film, and meanwhile, the outer surfaces of the first packaging film and the second packaging film are also provided with the conductive regions, so that the assembly effect of the steel shell button cell is obtained, and the mode that the positive electrode tab and the negative electrode tab are led out from the packaging film by the conventional soft package button cell is avoided. And first wrapping film and second wrapping film are compared in the bearing capacity less of steel-shelled to reduce the risk that the battery explodes, the security is high.
Drawings
FIG. 1 is a schematic view of the invention after flanging.
Fig. 2 is a schematic diagram of the structure of the invention after the package is completed.
Fig. 3 is an exploded schematic view of the present invention.
Fig. 4 is a cross-sectional view of a pocket portion of a first packaging film in the present invention.
Fig. 5 is a sectional view of a pocket portion of a second packaging film in the present invention.
Fig. 6 is a schematic structural view of a winding-type bare cell in embodiment 1 of the present invention.
Wherein: 1-a first packaging film, 2-a second packaging film, 3-a winding type bare cell, 4-a positive electrode tab, 5-a negative electrode tab, 6-a pit part, 7-a packaging part, 8-a folding structure, 11-a nylon glue layer, 12-an aluminum layer, 13-a PP layer, 14-a first aluminum layer exposed area, 15-a second aluminum layer exposed area, 21-a nylon glue layer, 22-a copper layer, 23-a PP layer, 24-a first copper layer exposed area, 25-a second copper layer exposed area, 41-a connecting area, 42-an insulating protection area, 51-a connecting area and 52-an insulating protection area.
Detailed Description
As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, within which a person skilled in the art can solve the technical problem to substantially achieve the technical result.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", horizontal ", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The present invention will be described in further detail below with reference to the accompanying drawings, but the present invention is not limited thereto.
Example 1
As shown in fig. 1-6, a soft packet of button cell of coiling formula, including first packaging film 1, second packaging film 2 and the naked electric core 3 of coiling formula of encapsulation between first packaging film 1 and second packaging film 2, positive pole utmost point ear 4 has been drawn forth to the one end of the naked electric core 3 of coiling formula, negative pole utmost point ear 5 has been drawn forth to the other end of the naked electric core 3 of coiling formula, positive pole utmost point ear 4 and negative pole utmost point ear 5 all are provided with joining region 41/51 and insulating protection district 42/52, joining region 41 of positive pole utmost point ear 4 is connected with the internal surface of first packaging film 1 is electrically conductive, the joining region 51 of negative pole utmost point ear 5 is connected with the internal surface of second packaging film 2 is electrically conductive, the surface of first packaging film 1 and second packaging film 2 all is provided with the conductive region.
Further, first packaging film 1 and second packaging film 2 all include pit portion 6 and encapsulation portion 7, and pit portion 6 is arranged in to naked electric core 3 of coiling formula to realize the encapsulation of naked electric core 3 of coiling formula through encapsulation portion 7. The packaging part 7 is bent upwards or downwards to form a folded structure 8 with folds after packaging is finished.
Further, the first packaging film 1 sequentially comprises a nylon adhesive layer 11, an aluminum layer 12 and a PP layer 13 from outside to inside, a first aluminum layer exposed area 14 is arranged on the inner surface of the pit portion 6 of the first packaging film 1, and a second aluminum layer exposed area 15 is arranged on the outer surface of the pit portion 6 of the first packaging film 1. The connection region 41 of the positive tab 4 is connected to the first exposed aluminum layer region 14, and the second exposed aluminum layer region 15 is the conductive region.
Further, the second packaging film 2 sequentially comprises a nylon glue layer 21, a copper layer 22 and a PP layer 23 from outside to inside, a first copper layer exposed area 24 is arranged on the inner surface of the pit portion 6 of the second packaging film 2, and a second copper layer exposed area 25 is arranged on the outer surface of the pit portion 6 of the second packaging film 2. The connection area 51 of the negative electrode tab 5 is connected to the first copper layer exposed area 24, and the second copper layer exposed area 25 is the conductive area.
Further, naked electric core 3 of coiling formula is stacked the coiling in proper order by positive plate, negative pole piece and the diaphragm three that the interval set up between positive plate and negative pole piece and is formed, and anodal utmost point ear 4 is connected with the positive plate, and negative pole utmost point ear 5 is connected with the negative pole piece. The positive pole lug 4 and the negative pole lug 5 are both positioned at the edge of the winding type naked electric core 3.
The preparation process of the wound soft-package button cell of the embodiment is as follows:
1) coating, rolling and cutting the positive and negative pole pieces, welding an aluminum sheet on the positive pole piece as a positive pole tab 4, welding a nickel sheet or a copper sheet on the negative pole piece as a negative pole tab 5, then winding the positive and negative pole pieces and the diaphragm together to form a winding type bare cell 3, respectively pasting glue on partial areas of the positive pole tab 4 and the negative pole tab 5 of the winding type bare cell 3 for insulation protection to form a connection area 41/51 and an insulation protection area 42/52, and finally bending the positive pole tab 4 and the negative pole tab 5;
2) stamping a pit part 6 on a first packaging film 1 (an aluminum plastic film), wherein a part of area of the inner surface of the pit part 6 is removed with a PP layer 13, an aluminum layer 12 is exposed to form a first aluminum layer exposed area 14, a part of position of the outer surface of the pit part 6 is removed with a nylon glue layer 11, and the aluminum layer 12 is exposed to form a second aluminum layer exposed area 15 (a conductive area);
3) stamping a pit part 6 on the second packaging film 2 (a copper-plastic film), wherein a part of the inner surface of the pit part 6 is provided with a PP layer 23, a copper layer 22 is exposed to form a first copper layer exposed area 24, a part of the outer surface of the pit part 6 is provided with a nylon glue layer 21, and the copper layer 22 is exposed to form a second copper layer exposed area 15 (a conductive area);
4) the winding type bare cell 3 with the bent positive electrode tab 4 and the bent negative electrode tab 5 is arranged in the pit parts 6 of the first packaging film 1 and the second packaging film 2, the connecting area 41 of the positive electrode tab 4 is welded with the first aluminum layer exposed area 14, and the connecting area 51 of the negative electrode tab 5 is welded with the first copper layer exposed area 24;
5) packaging the packaging parts 7 of the first packaging film 1 and the second packaging film 1 in a large part of area, reserving an air bag, puncturing the air bag after the processes of baking, injecting liquid, forming, degassing and the like, and completely sealing the packaging parts 7 to form a winding type soft package button battery with an arc edge sealing;
6) and (3) folding the circular-arc-shaped edge sealing of the winding type soft package button battery to form a folding structure 8 similar to a folded structure with folds, so as to obtain the winding type soft package button battery.
Example 2
The difference from example 1 is: the positive electrode lug 4 and the negative electrode lug 5 are both positioned at the winding center of the winding type naked electric core 3.
The rest is the same as embodiment 1, and the description is omitted here.
Example 3
The difference from example 1 is: the positive pole lug 4 is located at the winding center of the winding type naked electric core 3, and the negative pole lug 5 is located at the edge of the winding type naked electric core 3.
The rest is the same as embodiment 1, and the description is omitted here.
Example 4
The difference from example 1 is: the positive pole lug 4 is located at the edge of the winding type naked electric core 3, and the negative pole lug 5 is located at the winding center of the winding type naked electric core 3.
The rest is the same as embodiment 1, and the description is omitted here.
The foregoing description shows and describes several preferred embodiments of the invention, but as aforementioned, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a soft packet of button cell of coiling formula which characterized in that: including first packaging film, second packaging film and encapsulate in first packaging film with naked electric core of coiling formula between the second packaging film, anodal utmost point ear has been drawn forth to the one end of the naked electric core of coiling formula, negative pole utmost point ear has been drawn forth to the other end of the naked electric core of coiling formula, anodal utmost point ear with negative pole utmost point ear all is provided with joining region and insulating protection zone, the joining region of anodal utmost point ear with the internal surface of first packaging film is electrically conductive to be connected, the joining region of negative pole utmost point ear with the internal surface of second packaging film is electrically conductive to be connected, first packaging film with the surface of second packaging film all is provided with the conductive region.
2. The rolled soft-pack button battery according to claim 1, characterized in that: the first packaging film and the second packaging film both comprise pit parts and packaging parts, the winding type naked battery cell is arranged in the pit parts, and the packaging parts are used for packaging the winding type naked battery cell.
3. The rolled soft-pack button battery according to claim 1, characterized in that: first packaging film is by outer nylon glue film, aluminium lamination and the PP layer of including in proper order to interior, the internal surface of first packaging film pit portion is provided with the exposed district of first aluminium lamination, the surface of first packaging film pit portion is provided with the exposed district of second aluminium lamination.
4. The rolled soft-pack button battery according to claim 3, characterized in that: the connecting area of the positive electrode lug is connected with the first aluminum layer exposed area, and the second aluminum layer exposed area is the conductive area.
5. The rolled soft-pack button battery according to claim 1, characterized in that: the second packaging film comprises a nylon adhesive layer, a copper layer and a PP layer from outside to inside in sequence, the inner surface of the pit portion of the second packaging film is provided with a first copper layer exposed area, and the outer surface of the pit portion of the second packaging film is provided with a second copper layer exposed area.
6. The rolled soft-pack button battery according to claim 5, characterized in that: the connecting area of the negative electrode lug is connected with the exposed area of the first copper layer, and the exposed area of the second copper layer is the conductive area.
7. The rolled soft-pack button battery according to claim 2, characterized in that: and after the packaging is finished, the packaging part is bent upwards or downwards to form a folded edge structure with folds.
8. The rolled soft-pack button battery according to claim 1, characterized in that: the naked electric core of coiling formula by positive plate, negative pole piece and interval set up in positive plate with diaphragm three between the negative pole piece stacks the coiling in proper order and forms, anodal utmost point ear with positive plate is connected, negative pole utmost point ear with the negative pole piece is connected.
9. The rolled soft-pack button battery according to claim 8, characterized in that: the positive pole lug and the negative pole lug are both located at the winding center of the winding type naked battery cell, or the positive pole lug and the negative pole lug are both located at the edge of the winding type naked battery cell.
10. The rolled soft-pack button battery according to claim 8, characterized in that: in the positive electrode lug and the negative electrode lug, one is positioned at the winding center of the winding type naked battery cell, and the other is positioned at the edge of the winding type naked battery cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010118253.4A CN111312978A (en) | 2020-02-26 | 2020-02-26 | Winding type soft package button battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010118253.4A CN111312978A (en) | 2020-02-26 | 2020-02-26 | Winding type soft package button battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111312978A true CN111312978A (en) | 2020-06-19 |
Family
ID=71147788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010118253.4A Pending CN111312978A (en) | 2020-02-26 | 2020-02-26 | Winding type soft package button battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111312978A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2020
- 2020-02-26 CN CN202010118253.4A patent/CN111312978A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN115425341B (en) * | 2022-09-30 | 2024-06-04 | 路华置富电子(东莞)有限公司 | Winding type button cell with ruffle structure |
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