CN102315394A - Polymer (flexible package) lithium ion battery top encapsulating method - Google Patents
Polymer (flexible package) lithium ion battery top encapsulating method Download PDFInfo
- Publication number
- CN102315394A CN102315394A CN2010102160026A CN201010216002A CN102315394A CN 102315394 A CN102315394 A CN 102315394A CN 2010102160026 A CN2010102160026 A CN 2010102160026A CN 201010216002 A CN201010216002 A CN 201010216002A CN 102315394 A CN102315394 A CN 102315394A
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- lithium ion
- ion battery
- flexible package
- sealing
- lug
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention relates to a polymer (flexible package) lithium ion battery top encapsulating method, which mainly belongs to a method for carrying out hot sealing and welding on the top of a lithium ion battery by a flexible package film and comprises the following concrete steps that: the flexible package film is punched into a groove with the corresponding depth; a roll core is placed in the groove; the width of a sealing and welding opening does not exceed the length of hot melt adhesive compounded on a pole lug; and the hot sealing and welding is carried out on the flexible package film. The method has the advantages that through regulating the size of a sealing and welding clamp, the width of the sealing and welding opening does not exceed the length of the hot melt adhesive compounded on the pole lug, the avoidance of defects of short circuit, liquid leakage and the like of products is realized, the rejection of the products is reduced, and the service life of the products is prolonged. The method has a great application value in the field of the lithium ion battery.
Description
Technical field
The invention belongs to technical field of lithium ion, relate in particular to polymer (flexible package) lithium ion battery top encapsulation method.
Technical background
Present most of lithium ion battery be with common metal shell as battery core body package parts, its thickness is thicker, it is bigger to take up room; Fail safe is relatively poor; For overcoming above-mentioned defective, adopt flexible packaging film substitute above-mentioned metal shell as polymer (flexible package) lithium battery of package parts with high-energy-density, in light weight; The advantage of profile mutability etc. is the first-selected power supply of current various digital electronic goods.In polymer (flexible package) lithium battery production process, the flexible packaging film top and the side that need lithium cell will be housed seal weldering, reach the purpose of sealing flexible package lithium cell with this.Because lithium cell needs the lead-out wire of both positive and negative polarity, i.e. lug, lug is conductive metallic material mostly, it is relatively poor with the flexible packaging film adherence, even very little tension force also can cause peeling off, enough air-tightness can not be provided, and generally on lug, is compounded with PUR.In cell making process, need flexible packaging film be washed into the groove of respective depth, to lay corresponding lithium battery coiling core, seal flexible packaging film again, the position that contains lug to lithium ion battery usually calls the top.When heat-sealing weldering top; PUR on PP, PE layer and the lug of flexible packaging film inside melts; And fuse together through pushing, if soldering and sealing mouth width during greater than PUR length, inner PP, the PE layer of flexible packaging film will melt with lug seam is in the same place; This just possibly cause lug directly to contact with the aluminium foil of packaging film internal layer, causes battery short circuit and is called waste product; Simultaneously cause the aluminium foil of flexible packaging film internal layer to contact easily, and then damage the lithium battery sealing, cause lithium battery leakage and bulging, scrap with having corrosive electrolyte.
Summary of the invention:
The method for packing that the purpose of this invention is to provide a kind of polymer (flexible package) lithium ion battery top; Make soldering and sealing mouth width be no more than PUR length, cause the problem of battery short circuit and the leakage of soldering and sealing position when having solved the encapsulation at polymer (flexible package) lithium ion battery top.
For realizing above-mentioned technical purpose, the present invention adopts following technical scheme:
The method for packing at a kind of polymer (flexible package) lithium ion battery top is characterized in that this method carries out according to the following steps:
Flexible packaging film is washed into the groove of respective depth;
In groove, lay the volume core;
Adjustment soldering and sealing grip size makes soldering and sealing mouth width be no more than lug PUR length;
Heat-sealing weldering battery top flexible packaging film.
This method also comprises:
In the middle of said flexible packaging film comprises is that one deck aluminium foil and two sides are respectively the composite membranes of two-layer PE, PP film.
Said lug is the lug that is compounded with PUR.
The groove of said respective depth satisfies volume core encapsulation requirement.
Said heat-sealing weldering top is meant that when the heat-sealing weldering, wherein compound PUR is melted into one on the PP of the inside of the PP of the composite membrane of one side inside and PE layer and another layer composite membrane and PE layer and the lug.
The method for packing at a kind of polymer (flexible package) lithium ion battery top that the present invention set up has advantage: through adjustment soldering and sealing grip size, make soldering and sealing mouth width be no more than lug PUR length; Make polymer (flexible package) lithium ion battery top realize no leakage, no short circuit phenomenon; Improved product rate of finished products, prolonged useful life of product; Have technology simple, easy to operate, do not increase characteristics such as cost, have very big using value in the lithium ion battery field.
Description of drawings
Accompanying drawing is heat-sealing weldering polymer (flexible package) lithium ion battery schematical top view
Among the figure: anchor clamps, 6 sealing lower clamps in 1 flexible packaging film, 2 volume cores, 3 lugs, 4 PURs, 5 soldering and sealing
Embodiment
Further understand the present invention through specific embodiment below.
In conjunction with accompanying drawing; The volume heart 2 is put into towards good flexible packaging film 1, be compounded with PUR 4 on the lug 3 on the volume heart 2, when the length of PUR 4 is 4～6mm; Anchor clamps 5 are of a size of 2～3mm with sealing lower clamp 6 in the design soldering and sealing; Make seal widths than the little 2～3mm of PUR like this, use the flexible packaging film 1 of 6 pairs of volumes of anchor clamps 5 and sealing lower clamp core, 2 outsides in the soldering and sealing to carry out heat-seal then, the PP of flexible packaging film internal layer and PE layer are with the PUR seam on the lug together like this; Reach the purpose of lithium ion battery top seal, can not produce defectives such as short circuit, leakage simultaneously.
The lug of the composite hot melt adhesive that the present invention relates to is a known technology.
The heat-sealing temperature that the present invention relates to, time, pressure etc. are known technology.
Claims (6)
1. a polymer (flexible package) lithium ion battery top encapsulation method mainly is the top of lithium ion battery,
Seal the method for weldering with flexible packaging film, it is characterized in that said method comprises the following steps:
1) flexible packaging film is washed into the groove of respective depth;
2) in groove, lay the volume core;
3) soldering and sealing mouth width is no more than the size (hereinafter to be referred as PUR length) of PUR compound on the lug on the lug length direction;
4) flexible packaging film at heat-sealing weldering battery top.
2. the method for packing at a kind of polymer according to claim 1 (flexible package) lithium ion battery top is characterized in that said flexible packaging film is that one deck aluminium foil and two sides are respectively the composite membranes of two-layer PE, PP film in the middle of comprising.
3. the method for packing at a kind of polymer according to claim 1 (flexible package) lithium ion battery top is characterized in that said lug is the lug that contains the PUR insulating material.
4. the method for packing of a kind of polymer according to claim 1 (flexible package) lithium ion battery cell is characterized in that the groove of said respective depth satisfies volume core encapsulation requirement.
5. the method for packing at a kind of polymer according to claim 1 (flexible package) lithium ion battery top; It is characterized in that said heat-sealing weldering is meant when the heat-sealing weldering; Wherein inner PP of the composite membrane of one side and PE layer are integral with the PP and the PE melting layer of the inside of the PUR of lug and another layer composite membrane, and two sides composite membrane and lug are merged.
6. the method for packing at a kind of polymer according to claim 1 (flexible package) lithium ion battery top is characterized in that said soldering and sealing mouth width is no more than PUR length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102160026A CN102315394A (en) | 2010-07-01 | 2010-07-01 | Polymer (flexible package) lithium ion battery top encapsulating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102160026A CN102315394A (en) | 2010-07-01 | 2010-07-01 | Polymer (flexible package) lithium ion battery top encapsulating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102315394A true CN102315394A (en) | 2012-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102160026A Pending CN102315394A (en) | 2010-07-01 | 2010-07-01 | Polymer (flexible package) lithium ion battery top encapsulating method |
Country Status (1)
| Country | Link |
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| CN (1) | CN102315394A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102593504A (en) * | 2011-01-13 | 2012-07-18 | 苏州能斯特新能源有限公司 | Long-life lithium iron phosphate/hard carbon flexible package lithium battery |
| CN102916225A (en) * | 2012-10-30 | 2013-02-06 | 浙江振龙电源股份有限公司 | Polymeric soft-packaged lithium-ion battery core packaging device |
| CN107039674A (en) * | 2017-04-14 | 2017-08-11 | 惠州亿纬锂能股份有限公司 | Soft Roll button lithium cell seals fixture and its hot sealing process |
| CN111326681A (en) * | 2018-12-14 | 2020-06-23 | 微宏动力系统（湖州）有限公司 | Soft package battery core and battery system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002025514A (en) * | 2000-07-12 | 2002-01-25 | Nec Mobile Energy Kk | Sealed battery |
| JP2004199995A (en) * | 2002-12-18 | 2004-07-15 | Nec Tokin Tochigi Ltd | Sealed battery |
| CN101043071A (en) * | 2007-04-11 | 2007-09-26 | 深圳市邦凯电子有限公司 | Encapsulation method for electric core of flexible packing lithium battery |
| CN101276931A (en) * | 2007-03-30 | 2008-10-01 | 深圳市邦凯电子有限公司 | Flexible package lithium cell and method of processing the same |
-
2010
- 2010-07-01 CN CN2010102160026A patent/CN102315394A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002025514A (en) * | 2000-07-12 | 2002-01-25 | Nec Mobile Energy Kk | Sealed battery |
| JP2004199995A (en) * | 2002-12-18 | 2004-07-15 | Nec Tokin Tochigi Ltd | Sealed battery |
| CN101276931A (en) * | 2007-03-30 | 2008-10-01 | 深圳市邦凯电子有限公司 | Flexible package lithium cell and method of processing the same |
| CN101043071A (en) * | 2007-04-11 | 2007-09-26 | 深圳市邦凯电子有限公司 | Encapsulation method for electric core of flexible packing lithium battery |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102593504A (en) * | 2011-01-13 | 2012-07-18 | 苏州能斯特新能源有限公司 | Long-life lithium iron phosphate/hard carbon flexible package lithium battery |
| CN102916225A (en) * | 2012-10-30 | 2013-02-06 | 浙江振龙电源股份有限公司 | Polymeric soft-packaged lithium-ion battery core packaging device |
| CN102916225B (en) * | 2012-10-30 | 2015-03-25 | 浙江振龙电源股份有限公司 | Polymeric soft-packaged lithium-ion battery core packaging device |
| CN107039674A (en) * | 2017-04-14 | 2017-08-11 | 惠州亿纬锂能股份有限公司 | Soft Roll button lithium cell seals fixture and its hot sealing process |
| 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 |
| CN111326681A (en) * | 2018-12-14 | 2020-06-23 | 微宏动力系统（湖州）有限公司 | Soft package battery core and battery system |
| CN111326681B (en) * | 2018-12-14 | 2024-04-23 | 微宏公司 | Soft packet of electric core and battery system |
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Application publication date: 20120111 |