CN100511764C - Encapsulation method for electric core of flexible packing lithium battery - Google Patents
Encapsulation method for electric core of flexible packing lithium battery Download PDFInfo
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- CN100511764C CN100511764C CNB2007100738379A CN200710073837A CN100511764C CN 100511764 C CN100511764 C CN 100511764C CN B2007100738379 A CNB2007100738379 A CN B2007100738379A CN 200710073837 A CN200710073837 A CN 200710073837A CN 100511764 C CN100511764 C CN 100511764C
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- lithium battery
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- packaging film
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
A encapsulation method of soft packaging lithium cell core, hot sealing weld the face and the side of the soft packaging film which coats the lithium cell core, the concrete steps are following: the soft packaging film is clashed to groove with definite depth; the coil core is placed in the groove; the distance between the sealing weld to coil core is 0.05-0.5 mm; Hot sealing weld the soft packaging film. By adjusting the position of the sealing weld, the method realizes without leakage, and increase the service life of product.
Description
Technical field
The invention belongs to the manufacture method of lithium battery, relate in particular to the method for packing of electric core of flexible packing lithium battery.
Background technology
At present, in all kinds lithium battery, flexible package lithium cell is with high-energy-density, and is in light weight, and the advantage that form is made by oneself etc. is used widely in various digital electronic goods.In the flexible package lithium cell production process, the flexible packaging film front and the side that need lithium cell will be housed seal weldering, reach the purpose of sealing flexible package lithium cell with this.The flexible packaging film that is used for lithium battery production is a kind of five layers composite membrane, be one deck aluminium foil in the middle of generally being, the two sides is respectively two-layer PE, PP, when heat-sealing weldering front, wherein the PP of the inside of the PP of Yi Mian composite membrane inside and PE layer and another layer composite membrane and PE melting layer are integral, and the two sides composite membrane is merged.When using flexible packaging film, flexible packaging film need be washed into the groove of respective depth, come out to roll up core to lay corresponding lithium battery.During towards film, PP that it is inner and PE layer can draw thin in reality, even with two-layer drawing crack, make the aluminium foil of internal layer expose.When the heat-sealing weldering, its inner PP, PE layer alternately melt, and by pushing, its liquid colloid can be exuded to packaging film inside, forms small adhesive ball, after treating its cooling back or side bending, its small adhesive ball can break or come off from composite membrane inside, causes the aluminium foil of its internal layer directly to contact with having corrosive electrolyte, and then damages the lithium battery sealing, cause lithium battery leakage and bulging, scrap.
Summary of the invention
The method for packing that the purpose of this invention is to provide a kind of electric core of flexible packing lithium battery is respectively 0.05～0.5 millimeter by the soldering and sealing position apart from volume core side, by adjusting the soldering and sealing position, has thoroughly solved the problem of flexible package lithium cell soldering and sealing position leakage.
Realize that technical scheme of the present invention is: this method comprises that lithium cell three faces that will be enclosed with the volume core with flexible packaging film seal weldering, and its concrete steps are as follows:
Flexible packaging film is washed into the groove of respective depth according to lithium battery thickness;
In groove, lay the volume core;
Soldering and sealing electricity core front position;
The soldering and sealing position is 0.05～0.5 millimeter apart from volume core side;
Heat-sealing weldering flexible packaging film.
This method also comprises:
Described flexible packaging film is respectively the distribute composite membrane of one deck PE and one deck PP film of one deck aluminium foil and two sides in the middle of comprising.
The groove of described respective depth satisfies volume core encapsulation requirement.
Described heat-sealing weldering is meant that wherein the PP of the inside of the PP of Yi Mian composite membrane inside and PE layer and another layer composite membrane and PE melting layer are integral, and the two sides composite membrane is merged when the heat-sealing weldering.
Described soldering and sealing position is 0.1 millimeter apart from volume core side.
The beneficial effect that the present invention has: by adjusting the soldering and sealing position, realized the no leakage of product, the useful life of having improved product, have technology simple, easy to operate, do not increase characteristics such as cost.
Description of drawings
Fig. 1 is an overall structure schematic diagram of the present invention.
Fig. 2 is that the B of Fig. 1 is to partial enlarged drawing.
Fig. 3 is the A-A cutaway view of Fig. 1.
Among the figure: anchor clamps, 2 volume cores, 3 composite package films, 4 side seal lower clamps, 5 small adhesive balls on 1 side seal.
Embodiment
The present invention will be further described below in conjunction with accompanying drawing:
The composite package films 3 of anchor clamps 1 and 4 pairs of volumes of side seal lower clamp core, 2 outsides carry out heat-seal on this method use side seal, concrete steps are to change the original volume core 2 of being close to carry out soldering and sealing, but the soldering and sealing position of side (being the position of anchor clamps 1 and side seal lower clamp 4 on the side seal) left under order 0.05～0.5 millimeter in interior roll core, promptly roll up core 2 positions from 0.05～0.5 millimeter of composite package film 3 inner wall position, make when soldering and sealing, composite package film 3 inwall chemical compositions do not form the liquid colloid, make the liquid colloid not ooze out or do not form small adhesive ball 5, thereby prevented that electrolyte from directly acting on the aluminium foil in the composite package film 3, further prevents flexible package lithium cell leakage and bulging.
The present invention leaves the soldering and sealing position of side under order interior roll core 0.05～0.5 millimeter, in actual mechanical process, it is the composite package film distance of regulating anchor clamps and its side on the side seal, by measuring instrument (as clearance gauge), leave the soldering and sealing position under order interior roll core position 0.05～0.5 millimeter, the present invention is preferably 0.1 millimeter.Heat-sealing is welded then, can reach the effect of setting.
Embodiment 1: anchor clamps on the side seal are sticked the gummed paper (or substitute of similar gummed paper) of which floor 0.01 millimeters thick near volume core one side, and the hot pressing side seal with the impression contrast standard film of flexible package lithium cell, is selected 0.05 millimeter standard then, can reach requirement.
The heat-sealing anchor clamps that the present invention relates to are known technology.
The heat-sealing temperature that the present invention relates to, time, pressure etc. are known technology.
Claims (5)
1. the method for packing of an electric core of flexible packing lithium battery comprises with flexible packaging film parcel volume core, and the flexible packaging film of rolling up three sides of core is sealed weldering, it is characterized in that described method comprises the following steps:
A. flexible packaging film is washed into the groove of respective depth according to lithium battery thickness;
B. in groove, lay the volume core;
C. the soldering and sealing position is 0.05～0.5 millimeter apart from volume core side;
D. flexible packaging film is welded in heat-sealing.
2. the method for packing of electric core of flexible packing lithium battery as claimed in claim 1 is characterized in that described flexible packaging film is respectively the distribute composite membrane of one deck PE and one deck PP film of one deck aluminium foil and two sides in the middle of comprising.
3. the method for packing of electric core of flexible packing lithium battery as claimed in claim 1 or 2 is characterized in that the groove of described respective depth satisfies volume core encapsulation requirement.
4. the method for packing of electric core of flexible packing lithium battery as claimed in claim 1 or 2, it is characterized in that described heat-sealing weldering is meant when the heat-sealing weldering, wherein the PP of the inside of the PP of Yi Mian composite membrane inside and PE layer and another layer composite membrane and PE melting layer are integral, and the two sides composite membrane is merged.
5. the method for packing of electric core of flexible packing lithium battery as claimed in claim 1 or 2 is characterized in that described soldering and sealing position is 0.1 millimeter apart from volume core side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100738379A CN100511764C (en) | 2007-04-11 | 2007-04-11 | Encapsulation method for electric core of flexible packing lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100738379A CN100511764C (en) | 2007-04-11 | 2007-04-11 | Encapsulation method for electric core of flexible packing lithium battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101043071A CN101043071A (en) | 2007-09-26 |
| CN100511764C true CN100511764C (en) | 2009-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100738379A Expired - Fee Related CN100511764C (en) | 2007-04-11 | 2007-04-11 | Encapsulation method for electric core of flexible packing lithium battery |
Country Status (1)
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| CN (1) | CN100511764C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101764267A (en) * | 2008-12-24 | 2010-06-30 | 深圳市比克电池有限公司 | Battery and manufacturing method |
| CN102315394A (en) * | 2010-07-01 | 2012-01-11 | 江门市力源电子有限公司 | Polymer (flexible package) lithium ion battery top encapsulating method |
| CN101924248B (en) * | 2010-08-23 | 2013-02-27 | 东莞新能源科技有限公司 | Packaging method of soft-package lithium ion battery |
| CN102044706A (en) * | 2010-12-19 | 2011-05-04 | 惠州市博能新能源有限公司 | Method for preparing flexible packaging cylindrical lithium battery |
| CN102324548B (en) * | 2011-09-22 | 2014-04-02 | 深圳市创明电池技术有限公司 | Method for packaging flexible package cell |
| CN102315398A (en) * | 2011-09-29 | 2012-01-11 | 万海电源(烟台)有限公司 | Packaging method of lithium ion battery |
| CN106531908A (en) * | 2016-11-30 | 2017-03-22 | 四川赛尔雷新能源科技有限公司 | Double-film soft-packing lithium battery |
| CN107039674B (en) * | 2017-04-14 | 2023-07-07 | 惠州亿纬锂能股份有限公司 | Soft-package button lithium battery cell heat-sealing clamp and heat-sealing process thereof |
| CN114899537B (en) * | 2022-06-06 | 2023-09-01 | 昆山华誉自动化科技有限公司 | Soft package lithium battery aluminum plastic film heat sealing method and soft package lithium battery structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1196210C (en) * | 2002-07-17 | 2005-04-06 | 广州市鹏辉电池有限公司 | Soft-casting lithium iron battery and its making process |
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2007
- 2007-04-11 CN CNB2007100738379A patent/CN100511764C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1196210C (en) * | 2002-07-17 | 2005-04-06 | 广州市鹏辉电池有限公司 | Soft-casting lithium iron battery and its making process |
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| CN101043071A (en) | 2007-09-26 |
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| C06 | Publication | ||
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN BANGKAI NEW ENERGY CO., LTD. Free format text: FORMER NAME: SHENZHEN BANGKAI ELECTRONICS CO., LTD. |
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| CP03 | Change of name, title or address |
Address after: Guangdong province Shenzhen city Baoan District town of Longhua Dalang Village Huarong Road Hong Fu Industrial Zone Patentee after: Shenzhen B & K Rechargeable Battery Inc. Address before: Guangdong province Shenzhen Longhua Baoan District town red head village side Patentee before: Bangkai Electronic Co., Ltd., Shenzhen City |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090708 Termination date: 20160411 |