CN100483842C - Method of packaging high capacity polymer lithium battery - Google Patents
Method of packaging high capacity polymer lithium battery Download PDFInfo
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- CN100483842C CN100483842C CNB2007101567353A CN200710156735A CN100483842C CN 100483842 C CN100483842 C CN 100483842C CN B2007101567353 A CNB2007101567353 A CN B2007101567353A CN 200710156735 A CN200710156735 A CN 200710156735A CN 100483842 C CN100483842 C CN 100483842C
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- electric core
- sealing
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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
Abstract
The invention relates to an encapsulation method for large-capacity polymer lithium batteries, overcoming the defects in prior art of fold pleats when lithium batteries are encapsulated. The invention comprises following procedures: firstly, the aluminum-plastic composite membrane of the lithium battery is calibrated with the electric core pole ear into a perfect position, with the relative position fixed via molds; secondly, both the left and the right vertex angles of the aluminum-plastic composite membrane are pre-encapsulated; thirdly, the aluminum-plastic composite membrane and the pole ear are hot-encapsulated; plus, the aluminum-plastic composite membrane arranged on the left of the pole ear is hot-encapsulated to enclose the electric core under the pole ear; fourthly, after battery filling, the right encapsulation bar of the aluminum-plastic composite membrane arranged on the right of a gasbag is hot-encapsulated; fifthly, the exhausted hot-encapsulation of the aluminum-plastic composite membrane between the gasbag and the pole ear encapsulation bar is pre-encapsulated, forming a pre-encapsulation part; then the electric core can be exhausted under the gasbag; sixthly, the battery can be fully encapsulated and tailored. The invention has the advantage that the encapsulation of the electric core hot encapsulation bar is flat and even without any fold or feat, enhancing hot-encapsulation result, preventing leakage from the electric core, and increasing the production qualification rate of large-capacity polymer lithium batteries.
Description
Technical field
The present invention relates to a kind of method for packing of lithium battery, especially be used for encapsulating high capacity polymer lithium battery.
Background technology
At present, lithium ion battery divides liquid lithium battery and poly-lithium battery.Liquid lithium ionic cell mainly is that takeup type adds steel, aluminum hull; The capacity of battery is little, is applicable to mobile communication, PDA, electric tool and laptop computer etc.Poly-lithium battery mainly is stacked plastic-aluminum flexible packing, is adapted to the jumbo batteries of needs such as electric bicycle and electric automobile and does electrical source of power.The polymer monomer battery can satisfy the needs of this type of electrical source of power by the mode of series and parallel.
Because the difference of cell performance, the series and parallel amount of monomer is many more, and the performance difference of battery pack is just big more; Thereby the monomer that is used for the power polymer lithium ion battery develops towards high power capacity, high-energy and high density direction, to reduce the amount of monomer of series and parallel.Make cell reach high power capacity, under present production equipment process conditions, will improve the quantity of video disc, the heat-sealable way of aluminum-plastic composite membrane just seems particularly important like this.Under the few situation of low capacity, video disc quantity, the stamp degree of depth of aluminum-plastic composite membrane can satisfy the encapsulation of such battery, and leakage can not occur encapsulating.But many in number of laminations, electric core thickness just is easy to generate the heat-sealing gauffer of aluminum-plastic composite membrane during greater than the maximum stamp degree of depth of aluminum-plastic composite membrane.Particularly when secondary is found time, because electric core thickness is bigger, along with the finding time of electric in-core gas, aluminum-plastic composite membrane easily produces gauffer and sun line in the bight of air bag and lug strip of paper used for sealing, makes battery deliquescing, leakage in the course of time, finally causes battery to be scrapped when finding time.
Summary of the invention
When the invention solves electric core thickness in the prior art greater than the maximum stamp degree of depth of aluminum-plastic composite membrane, be easy to generate the shortcoming of the heat-sealing gauffer of aluminum-plastic composite membrane, a kind of method for packing that heat-sealing prevents to produce the high capacity polymer lithium battery of heat-sealing gauffer in proper order that changed is provided.
The present invention has also solved when electric core thickness is big in the prior art, when heat-sealing aluminum-plastic composite membrane secondary is found time, easily produce gauffer and sun line in the bight of air bag and lug strip of paper used for sealing easily, make battery deliquescing, leakage easily, the shortcoming that finally causes battery to be scrapped, provide a kind of elder generation that aluminum-plastic composite membrane is carried out pre-front cover section in the bight of air bag and lug strip of paper used for sealing and carry out secondary again and find time, prevent that when secondary is found time aluminum-plastic composite membrane from producing the method for packing of the high capacity polymer lithium battery of gauffer and sun line.
The technical solution adopted for the present invention to solve the technical problems is: a kind of method for packing of high capacity polymer lithium battery comprises the following steps:
The first, electric core, lug and aluminum-plastic composite membrane are adjusted the position, again with fixing electric core of mould and lug relative position;
The second, the left angle position and the right angle position of aluminum-plastic composite membrane are sealed in advance;
The 3rd, with aluminum-plastic composite membrane and lug heat-sealing,, encase the electric core of lug bottom again to the aluminum-plastic composite membrane heat-sealing of lug left side;
The 4th, after the fluid injection again to the right side strip of paper used for sealing heat-sealing of the aluminum-plastic composite membrane on air bag right side;
The 5th, to the find time heat-sealing portion pre-front cover section of aluminum-plastic composite membrane between air bag and electric core, form pre-envelope position, from the air bag bottom electric core is found time again;
The 6th, finish whole encapsulation, reduce the aluminum-plastic composite membrane of balloon positions.
Before finding time,, when finding time,, prevent that gauffer from appearring in the electric core heat-sealing bar that encapsulates like this along with gas moves to electric core bottom with the fixed length of the pre-front cover of the heat-sealing portion of finding time of aluminum-plastic composite membrane between air bag and lug strip of paper used for sealing.
When finding time to seal in advance, between air bag and lug strip of paper used for sealing, pre-envelope position is sealed.
The 5th step was to find time to seal 1/3～1/2 of minister's degree to aluminum-plastic composite membrane in the length of air bag and the pre-envelope of electric core.
The whole heat-seal land of finding time of the 5th step is overlapping with pre-envelope position, finds time from the air bag bottom again.
Lug divides anode ear and negative electrode lug, and both fix by parallel homonymy.
Aluminum-plastic composite membrane is square.
The invention has the beneficial effects as follows: earlier the drift angle about aluminum-plastic composite membrane lug heat-sealing bar is sealed in advance, again lug is sealed, before secondary is found time, aluminum-plastic composite membrane is carried out the fixed length of pre-front cover in the bight of air bag and lug heat-sealing bar, carry out secondary again and find time, gas moves to electric core bottom, makes the electric core heat-sealing bar of encapsulation smooth, corrugationless, improve the heat-sealing effect, prevent electric core leakage, improve the qualification rate of high capacity polymer lithium battery.
Description of drawings
Fig. 1 is a kind of schematic diagram of the present invention;
Among the figure: 1, anode ear, 2, negative electrode lug, 3, left drift angle, 4, right drift angle, 5, the left side strip of paper used for sealing, 6, electric core, 7, the heat-sealing portion of finding time, 8, air bag, 9, the right side strip of paper used for sealing, 10, envelope portion in advance, 11, the lug strip of paper used for sealing.
Embodiment
Below by specific embodiment, and in conjunction with the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment: a kind of method for packing of high capacity polymer lithium battery (concrete structure is referring to accompanying drawing 1), at first, the electric core 6 that placement of multiple layers is arranged in parallel in square aluminum-plastic composite membrane, the electricity core is placed on center-left lateral location, the electricity core is provided with anode ear 1 and negative electrode lug 2, anode ear and negative electrode lug pass the position of the lug strip of paper used for sealing 11 of aluminum-plastic composite membrane, by mould electric core, lug are fixed; The second, with the left drift angle 3 and right drift angle 4 heat-sealing earlier of aluminum-plastic composite membrane; The 3rd, with the lug strip of paper used for sealing and the lug heat-sealing of aluminum-plastic composite membrane, the left side strip of paper used for sealing 5 to aluminum-plastic composite membrane seals again, and the left side and the plastic-aluminum of forward and backward, last three positions are coupled together; The 4th, fluid injection, the right side strip of paper used for sealing to electric core air bag right side aluminum-plastic composite membrane seals then; The 5th, aluminum-plastic composite membrane departs from electric core position and separates as air bag 8 with the heat-sealing portion 7 of finding time, the heat-sealing portion of will finding time connects the pre-front cover section in lug strip of paper used for sealing position, form pre-envelope portion 10, its length is the 1/2 heat-sealing portion of finding time, and the heat-sealing portion of will finding time is 7 overlapping with pre-envelope position, from air bag bottom team electric core is found time again, the gas of electric in-core is moved to electric core bottom, and the heat-sealing portion heat-sealing of will finding time is simultaneously finished; The 6th, with the bottom heat-sealing of electric core, and finish finishing, the aluminum-plastic composite membrane that the air bag position is exceeded the heat-sealing portion of finding time is reduced.
Claims (6)
1, a kind of method for packing of high capacity polymer lithium battery is characterized in that described method comprises the following steps:
The first, electric core, lug and aluminum-plastic composite membrane are adjusted the position, again with fixing electric core of mould and lug relative position;
The second, left drift angle (3) position and right drift angle (4) position of aluminum-plastic composite membrane are sealed in advance;
The 3rd, with aluminum-plastic composite membrane and lug heat-sealing,, encase the electric core (6) of lug bottom again to the aluminum-plastic composite membrane heat-sealing of lug left side;
The 4th, after the fluid injection again to right side strip of paper used for sealing (9) heat-sealing of the aluminum-plastic composite membrane on air bag right side;
The 5th, to the pre-front cover section of the find time heat-sealing portion (7) of aluminum-plastic composite membrane between air bag (8) and electric core, form pre-envelope position (10), from the air bag bottom electric core is found time again;
The 6th, finish whole encapsulation, reduce the aluminum-plastic composite membrane of balloon positions.
2, the method for packing of high capacity polymer lithium battery according to claim 1 when it is characterized in that finding time sealing in advance, seals pre-envelope position (10) between air bag (8) and lug strip of paper used for sealing (11).
3, the method for packing of high capacity polymer lithium battery according to claim 1 is characterized in that described the 5th step is to find time to seal 1/3～1/2 of minister's degree to aluminum-plastic composite membrane in the length of air bag and the pre-envelope of electric core.
4, the method for packing of high capacity polymer lithium battery according to claim 1 is characterized in that the whole heat-seal land (7) of finding time of described the 5th step is overlapping with pre-envelope position (10), finds time from air bag (8) bottom again.
5, according to the method for packing of claim 1 or 2 or 3 described high capacity polymer lithium batteries, it is characterized in that described lug divides anode ear (1) and negative electrode lug (2), both fix by parallel homonymy.
6, the method for packing of high capacity polymer lithium battery according to claim 1 is characterized in that described aluminum-plastic composite membrane is square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101567353A CN100483842C (en) | 2007-11-28 | 2007-11-28 | Method of packaging high capacity polymer lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101567353A CN100483842C (en) | 2007-11-28 | 2007-11-28 | Method of packaging high capacity polymer lithium battery |
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| CN101183736A CN101183736A (en) | 2008-05-21 |
| CN100483842C true CN100483842C (en) | 2009-04-29 |
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| CNB2007101567353A Active CN100483842C (en) | 2007-11-28 | 2007-11-28 | Method of packaging high capacity polymer lithium battery |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102054942A (en) * | 2010-12-16 | 2011-05-11 | 天津力神电池股份有限公司 | Method for punching shells at two sides of aluminum-plastic packaging bag of polymer lithium ion battery by using shell repairing mold |
| CN104577016B (en) * | 2013-10-22 | 2018-03-27 | 深圳仙苗科技有限公司 | Electronic watch chain with poly-lithium battery function and preparation method thereof |
| CN106486629A (en) * | 2016-12-14 | 2017-03-08 | 河北银隆新能源有限公司 | Soft-package battery |
| CN109860444A (en) * | 2018-12-19 | 2019-06-07 | 惠州亿纬锂能股份有限公司 | A kind of battery packaging structure and method |
| CN112072186A (en) * | 2019-06-11 | 2020-12-11 | 万向一二三股份公司 | Method for improving formation wettability and SEI film stability of soft package battery |
| KR20210150865A (en) * | 2020-06-04 | 2021-12-13 | 주식회사 엘지에너지솔루션 | Secondary battery and manufacturing method thereof |
| CN112151870A (en) * | 2020-09-21 | 2020-12-29 | 东莞市金赛尔电池科技有限公司 | Packaging process of ultrathin soft package battery |
| CN112713316B (en) * | 2020-12-29 | 2022-07-19 | 惠州市恒泰科技股份有限公司 | Lithium ion battery and packaging process thereof |
| CN113270604A (en) * | 2021-04-26 | 2021-08-17 | 广东利元亨智能装备股份有限公司 | Battery cell packaging method and battery cell packaging equipment |
| CN113839081A (en) * | 2021-08-12 | 2021-12-24 | 曙鹏科技（深圳）有限公司 | Preparation method of lithium ion battery |
| CN113823825A (en) * | 2021-08-29 | 2021-12-21 | 西北工业大学 | Battery cell, manufacturing method thereof, arc-shaped battery and battery module |
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Effective date of registration: 20211111 Address after: 311215 No. 855, Jianshe Second Road, economic and Technological Development Zone, Xiaoshan District, Hangzhou City, Zhejiang Province Patentee after: Wanxiang 123 Co., Ltd Address before: 311215 Wanxiang Group Technology Center, ningwei Town, Xiaoshan District, Hangzhou City, Zhejiang Province Patentee before: Wanxiang Group Co., Ltd Patentee before: Wanxiang Electric Vehicle Co., Ltd |