CN102117936A - Method for forming flexibly packaged lithium ion battery - Google Patents
Method for forming flexibly packaged lithium ion battery Download PDFInfo
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- CN102117936A CN102117936A CN200910264780XA CN200910264780A CN102117936A CN 102117936 A CN102117936 A CN 102117936A CN 200910264780X A CN200910264780X A CN 200910264780XA CN 200910264780 A CN200910264780 A CN 200910264780A CN 102117936 A CN102117936 A CN 102117936A
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- lithium ion
- ion battery
- reflux
- battery
- back pressure
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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
-
- 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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- Secondary Cells (AREA)
- Filling, Topping-Up Batteries (AREA)
Abstract
The invention discloses a method for forming a flexibly packaged lithium ion battery, relating to a process for manufacturing a lithium ion battery. A charging tube is reserved after a battery cell is packaged with an aluminum-plastic membrane; in the forming process, the inner cavity of the aluminum-plastic membrane is evacuated by adopting a reflux unit, and the vacuum degree of gage pressure is 0.05-0.06MPa; then, electrolyte returns to pressure by using inert gases, the return pressure is automatically controlled, and gases are prevented from entering the battery; and finally, the charging tube is thermally sealed. The method is used for forming the flexibly packaged lithium ion battery, has the advantages of saving materials and simplifying the working processes as compared with an air sac type forming method, and can effectively lower the production cost, realize the thorough exhaust, improve the forming effect of the battery and prolong the cycle life of the battery.
Description
Technical field
The present invention relates to the lithium ion battery manufacture craft, specifically is a kind of flexible packing lithium ion battery chemical synthesizing method.
Background technology
Battery changes into exactly by certain and discharges and recharges the process that battery that standard will make activates.Lithium ion battery can produce gas in formation process, gas must in time be removed, and not so can influence the performance of battery.Flexible packing lithium ion battery is a kind of novel package lithium ion battery that grows up on duricrust (box hat, aluminum hull) basis, but owing to be flexible package, so can not adopt the such uncovered mode that changes into of duricrust lithium ion battery.No matter adopt which kind of mode exhaust, prerequisite all is to contact any moisture, because the organic electrolyte of lithium ion battery and water easily react.The chemical synthesizing method of flexible packing lithium ion battery generally is a gasbag-type at present, when promptly packing electric core, except that encasing electric core fully, leave a part of aluminum plastic film and be used to do air bag with aluminum plastic film, the gas that generates in the storage formation process changes into end back excision air bag and encapsulates.The shortcoming of this method is the waste aluminum plastic film, increases the battery production cost, and battery capacity is big more, wastes manyly more, and the gas of Chan Shenging can not be eliminated thoroughly in addition, changes into complex steps.
Summary of the invention
The technical problem to be solved in the present invention is the weak point that overcomes existing gasbag-type chemical synthesizing method, provides a kind of and can reduce production costs, improve the flexible packing lithium ion battery chemical synthesizing method of battery formation effect and cycle life.
Technical scheme of the present invention is: the flexible packing lithium ion battery chemical synthesizing method, comprise electric core packing, fluid injection, discharge and recharge, seal key step, after packing with aluminum plastic film, the electricity core leaves liquid injection pipe, its improvements are: adopt reflux that the aluminum plastic film inner chamber is vacuumized in this method, and back pressure electrolyte, described reflux is by vacuum pump, the inert gas holder, liquid storage bottle, autocontrol valve, return duct and program control part constitute, the reflux method of operation is after the fluid injection described liquid injection pipe to be connected with return duct in the reflux, in the charge and discharge process aluminum plastic film inner chamber is vacuumized, discharge and recharge after the end the slow back pressure of electrolyte of extracting out, by autocontrol valve control back pressure amount, unload reflux at last, the heat-sealing liquid injection pipe.
Further scheme is: when described liquid injection pipe was connected with return duct, the liquid storage bottle in the reflux was higher than electric core 20～120cm; In the described reflux, vacuum pump and inert gas holder are parallel to the liquid storage bottle top, and autocontrol valve and return duct are contained in the liquid storage bottle bottom; Contact control electrolyte back pressure amount in described autocontrol valve adopts, in liquid level is lower than during contact, autocontrol valve cuts out automatically, stops back pressure during back pressure; In the described charge and discharge process during to aluminum plastic film inner chamber degree of exhaustion gauge pressure vacuum degree be 0.05～0.06MPa; Described reflux unloads the back and reuses.
The present invention adopts reusable reflux to carrying out exhaust in the battery formation process, need not reserve the aluminum plastic film air bag when electric core is packed, and saves excision and sealing process to air bag, saves material, simplifies technology, can effectively reduce production costs.And reflux vacuumizes and back pressure electrolyte by setup program, makes in the battery air scavenge thorough, improves the battery formation effect, prolongs battery cycle life.
Description of drawings
Accompanying drawing is for adopting reflux work schematic diagram among the present invention.
Embodiment
Further specify the present invention below in conjunction with accompanying drawing.
At first assemble a collection of 10Ah flexible packing lithium ion battery 1 with conventional method, leave liquid injection pipe 2 and inject electrolyte (every battery 60ml) after electric core is packed with aluminum plastic film in the battery, after the fluid injection liquid injection pipe 2 is connected with return duct 3 in the reflux, then discharge and recharge, open vacuum pump 4, to chamber pumping in the aluminum plastic film, gauge pressure vacuum degree is 0.055MPa, extract 5ml electrolyte when discharging and recharging end out and enter in the liquid storage bottle 5 that is higher than electric core 80cm, close vacuum pump subsequently, open inert gas holder 6, with the slow back pressure of electrolyte of extracting out in battery, during back pressure, when liquid level was lower than the interior contact of the autocontrol valve 7 that is contained in the liquid storage bottle bottom, autocontrol valve cut out automatically, stop back pressure, guarantee that gas does not enter inside battery, unload reflux at last, heat-sealing liquid injection pipe 2.Battery changes into the back capacity and is distributed between the 10Ah to 10.2Ah, detects through 5A (0.5C) charging, 10A (1C) discharge cycles, and the battery capacity surplus ratio is 80% o'clock, and cycle life reaches more than 500 times.
This reflux is connected with every battery respectively, can be used for a collection of battery and changes into, and its intermediate pump and inert gas holder are shared.
Claims (6)
1. flexible packing lithium ion battery chemical synthesizing method, comprise electric core packing, fluid injection, discharge and recharge, seal key step, after packing with aluminum plastic film, the electricity core leaves liquid injection pipe, it is characterized in that: adopt reflux that the aluminum plastic film inner chamber is vacuumized in this method, and back pressure electrolyte, described reflux is by vacuum pump, the inert gas holder, liquid storage bottle, autocontrol valve, return duct and program control part constitute, the reflux method of operation is after the fluid injection described liquid injection pipe to be connected with return duct in the reflux, in the charge and discharge process aluminum plastic film inner chamber is vacuumized, discharge and recharge after the end the slow back pressure of electrolyte of extracting out, by autocontrol valve control back pressure amount, unload reflux at last, the heat-sealing liquid injection pipe.
2. by the described flexible packing lithium ion battery chemical synthesizing method of claim 1, it is characterized in that: when described liquid injection pipe was connected with return duct, the liquid storage bottle in the reflux was higher than electric core 20～120cm.
3. by the described flexible packing lithium ion battery chemical synthesizing method of claim 1, it is characterized in that: in the described reflux, vacuum pump and inert gas holder are parallel to the liquid storage bottle top, and autocontrol valve and return duct are contained in the liquid storage bottle bottom.
4. by the described flexible packing lithium ion battery chemical synthesizing method of claim 3, it is characterized in that: contact control electrolyte back pressure amount in described autocontrol valve adopts, in liquid level is lower than during contact, autocontrol valve cuts out automatically, stops back pressure during back pressure.
5. by the described flexible packing lithium ion battery chemical synthesizing method of claim 1, it is characterized in that: in the described charge and discharge process during to aluminum plastic film inner chamber degree of exhaustion gauge pressure vacuum degree be 0.05～0.06MPa.
6. by the described flexible packing lithium ion battery chemical synthesizing method of claim 1, it is characterized in that: described reflux unloads the back and reuses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910264780XA CN102117936A (en) | 2009-12-30 | 2009-12-30 | Method for forming flexibly packaged lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910264780XA CN102117936A (en) | 2009-12-30 | 2009-12-30 | Method for forming flexibly packaged lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102117936A true CN102117936A (en) | 2011-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910264780XA Pending CN102117936A (en) | 2009-12-30 | 2009-12-30 | Method for forming flexibly packaged lithium ion battery |
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| CN (1) | CN102117936A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102456861A (en) * | 2011-12-21 | 2012-05-16 | 万向电动汽车有限公司 | Exhaust device for flexibly-packaged lithium ion battery |
| CN102593527A (en) * | 2012-03-26 | 2012-07-18 | 西安瑟福能源科技有限公司 | Method for forming polymer lithium ion battery |
| CN103682458A (en) * | 2013-12-11 | 2014-03-26 | 高平唐一新能源科技有限公司 | Method for solving residue of internal gas and electrolyte in formation of hard-shell lithium battery |
| CN103840213A (en) * | 2013-11-21 | 2014-06-04 | 厦门华锂能源有限公司 | High-safety lithium ion battery and manufacturing method thereof |
| CN104600369A (en) * | 2015-01-12 | 2015-05-06 | 山东神工海特电子科技有限公司 | Liquid injecting, sealing and forming method of soft packaging lithium-ion battery |
| CN105428728A (en) * | 2015-12-29 | 2016-03-23 | 吉安市优特利科技有限公司 | Polymer power battery and manufacturing method thereof |
| CN105449258A (en) * | 2015-12-29 | 2016-03-30 | 深圳市优特利电源有限公司 | Polymer power battery and manufacturing method |
| CN107195849A (en) * | 2017-06-19 | 2017-09-22 | 广东亿鑫丰智能装备股份有限公司 | A kind of battery liquid-filling equipment |
| CN108598578A (en) * | 2018-02-26 | 2018-09-28 | 合肥国轩高科动力能源有限公司 | A kind of anti-liquid-jet device of lithium ion battery chemical conversion |
| CN108923072A (en) * | 2018-07-05 | 2018-11-30 | 中盐安徽红四方锂电有限公司 | A kind of lithium ion battery equipressure chemical synthesizing method |
| CN109585783A (en) * | 2018-12-03 | 2019-04-05 | 桑顿新能源科技有限公司 | A kind of wetting method of lithium ion battery and its pole piece |
| CN111048843A (en) * | 2019-11-19 | 2020-04-21 | 深圳君耀投资合伙企业(有限合伙) | Manufacturing method of soft package lithium ion battery and soft package lithium ion battery |
| CN117477048A (en) * | 2023-12-27 | 2024-01-30 | 广东嘉尚新能源科技有限公司 | Air-extracting and liquid-injecting line for soft-package lithium battery |
-
2009
- 2009-12-30 CN CN200910264780XA patent/CN102117936A/en active Pending
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102456861A (en) * | 2011-12-21 | 2012-05-16 | 万向电动汽车有限公司 | Exhaust device for flexibly-packaged lithium ion battery |
| CN102593527A (en) * | 2012-03-26 | 2012-07-18 | 西安瑟福能源科技有限公司 | Method for forming polymer lithium ion battery |
| CN102593527B (en) * | 2012-03-26 | 2014-03-26 | 西安瑟福能源科技有限公司 | Method for forming polymer lithium ion battery |
| CN103840213A (en) * | 2013-11-21 | 2014-06-04 | 厦门华锂能源有限公司 | High-safety lithium ion battery and manufacturing method thereof |
| CN103682458A (en) * | 2013-12-11 | 2014-03-26 | 高平唐一新能源科技有限公司 | Method for solving residue of internal gas and electrolyte in formation of hard-shell lithium battery |
| CN103682458B (en) * | 2013-12-11 | 2016-01-20 | 高平唐一新能源科技有限公司 | A kind of internal gas and electrolyte residual method when solving duricrust formation of Li-ion batteries |
| CN104600369A (en) * | 2015-01-12 | 2015-05-06 | 山东神工海特电子科技有限公司 | Liquid injecting, sealing and forming method of soft packaging lithium-ion battery |
| CN105428728B (en) * | 2015-12-29 | 2018-01-30 | 吉安市优特利科技有限公司 | Polymer power battery and preparation method |
| CN105449258A (en) * | 2015-12-29 | 2016-03-30 | 深圳市优特利电源有限公司 | Polymer power battery and manufacturing method |
| CN105428728A (en) * | 2015-12-29 | 2016-03-23 | 吉安市优特利科技有限公司 | Polymer power battery and manufacturing method thereof |
| CN105449258B (en) * | 2015-12-29 | 2018-08-14 | 深圳市优特利电源有限公司 | Polymer power battery and production method |
| CN107195849A (en) * | 2017-06-19 | 2017-09-22 | 广东亿鑫丰智能装备股份有限公司 | A kind of battery liquid-filling equipment |
| CN107195849B (en) * | 2017-06-19 | 2023-06-13 | 广东亿鑫丰智能装备股份有限公司 | Battery liquid injection equipment |
| CN108598578A (en) * | 2018-02-26 | 2018-09-28 | 合肥国轩高科动力能源有限公司 | A kind of anti-liquid-jet device of lithium ion battery chemical conversion |
| CN108923072A (en) * | 2018-07-05 | 2018-11-30 | 中盐安徽红四方锂电有限公司 | A kind of lithium ion battery equipressure chemical synthesizing method |
| CN109585783A (en) * | 2018-12-03 | 2019-04-05 | 桑顿新能源科技有限公司 | A kind of wetting method of lithium ion battery and its pole piece |
| CN109585783B (en) * | 2018-12-03 | 2022-02-18 | 桑顿新能源科技(长沙)有限公司 | Lithium ion battery and pole piece infiltration method thereof |
| CN111048843A (en) * | 2019-11-19 | 2020-04-21 | 深圳君耀投资合伙企业(有限合伙) | Manufacturing method of soft package lithium ion battery and soft package lithium ion battery |
| CN117477048A (en) * | 2023-12-27 | 2024-01-30 | 广东嘉尚新能源科技有限公司 | Air-extracting and liquid-injecting line for soft-package lithium battery |
| CN117477048B (en) * | 2023-12-27 | 2024-03-12 | 广东嘉尚新能源科技有限公司 | Air-extracting and liquid-injecting line for soft-package lithium battery |
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Application publication date: 20110706 |