CN102340031A - Follow-up process treatment method for manufacturing battery by taking lithium titanate as cathode - Google Patents
Follow-up process treatment method for manufacturing battery by taking lithium titanate as cathode Download PDFInfo
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- CN102340031A CN102340031A CN2011102200441A CN201110220044A CN102340031A CN 102340031 A CN102340031 A CN 102340031A CN 2011102200441 A CN2011102200441 A CN 2011102200441A CN 201110220044 A CN201110220044 A CN 201110220044A CN 102340031 A CN102340031 A CN 102340031A
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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 discloses a follow-up process treatment method for manufacturing a battery by taking lithium titanate as a cathode, comprising the following steps of: injecting liquids into the battery and then standing the battery with the liquids for 6-12 hours at a temperature of 20-45 DEG C; clamping the middle region of the battery by using an elastic clamp plate for formation; and after the formation, taking off the elastic clamp plate, ageing for 6-12 hours at the temperature of 20-45 DEG C and then carrying out capacity grading so as to obtain a lithium ion battery by taking the lithium titanate as a cathode. By using the method, a battery cell can be soaked completely by an electrolyte, thus gases generated by the lithium titanate can be eliminated completely; and the elastic clamp plate is used to extrude the middle region of the battery, thus the battery is prevented from expansion, the exertion of the electrical property of the battery is ensured and the cycle life of the battery is long.
Description
Technical field
The invention belongs to the lithium-ion-power cell field, relating to a kind of is the back operation processing method of the lithium-ion-power cell manufacturing of negative pole with the lithium titanate.
Background technology
The tradition lithium-ion-power cell with graphite as the negative material main active substances.When initial charge, graphite and electrolyte, lithium ion form the SEI film keeping the uncertain of self, but continual chemical reaction and crystal formation change, and affect the cycle performance of battery, and finally cause decreased performance and battery capacity decay.
Lithium titanate embeds or deviates from the process at Li, and crystal formation does not change, and therefore change in volume is called as " zero strain material " less than 1%, and cycle life improves therefore and greatly, is the preferred material that substitutes the graphite material of current use.The lithium titanate material electromotive force is difficult for producing the lithium dendrite arm than the height of pure metal lithium, for the safety that ensures lithium battery provides the foundation, is considered to thoroughly to solve the fail safe of lithium battery.
With respect to graphite, also there are some shortcomings in lithium titanate, as being prone to suction, also is prone to suck other composition, and dewatering is not easy, because specific area is big, can consumes a large amount of electrolyte, and when changing into, can produce a large amount of gas.Deal with improperly, the internal resistance of cell increases, and in charge and discharge process, can cause the battery bulging and cause the battery cycle electric performance to descend by generation gas.
Summary of the invention
The object of the present invention is to provide a kind of is the back operation processing method of the battery manufacturing of negative pole with the lithium titanate.
The solution that the present invention solves its technical problem is:
A kind of is the back operation processing method of the battery manufacturing of negative pole with the lithium titanate, comprises the steps:
1) shelves 6 ~ 12h in 20 ~ 45 ℃ behind the battery liquid-filling;
2) clamping the battery central region with Elastic clamping plate changes into;
3) take off Elastic clamping plate after changing into, get into partial volumes, obtain the lithium ion battery that a kind of lithium titanate is a negative pole at 20 ~ 45 ℃ of ageing 6 ~ 12h.
Preferably, shelve during 6 ~ 12h behind the said battery liquid-filling of step 1), whenever at a distance from 1 ~ 4h upset one side.
The invention has the beneficial effects as follows:
The present invention a kind of with the lithium titanate be the fluid injection of making of the battery of negative pole after operation, the method for taking to overturn makes battery under gravity and temperature effect, accomplish the electrolyte soak process, so that electrolyte soaks into electric core fully, thoroughly eliminates the gas of lithium titanate generation.
The present invention a kind of be the formation process that the battery of negative pole is made with the lithium titanate; Adopt the Elastic clamping plate extruding to live the battery central region; The gas that in charging process, produces of battery can be because the effect of extruding force be discharged to the external world through exhaust outlet like this, thereby has avoided the bulging of battery.
The present invention's process is a kind of to be the back operation processing of the battery manufacturing of negative pole with the lithium titanate, has eliminated the harmful effect that lithium titanate self brings, and has guaranteed the performance of battery electrical property, and battery cycle life is long.
Description of drawings
Fig. 1 is embodiment 1 internal resistance of cell change curve;
Fig. 2 is embodiment 2 battery discharge curves;
Fig. 3 is the 1c cyclic curve of embodiment 3 batteries.
Embodiment
Embodiment 1
The preceding operation that lithium titanate-ferrous phosphate lithium battery is made: anode sizing agent contains 85% LiFePO 4,5%LA132,10% carbon black; Cathode size contains 88% lithium titanate, 5%LA132,7% carbon black; The positive and negative electrode slurry is uniformly coated on respectively on the aluminium foil, and through baking, roll-in cuts into positive and negative plate, and pole piece gets into the lamination operation through vacuum bakeout, is assembled into electric core and is packaged in plastic casing, vacuum bakeout.
The back operation that lithium titanate-ferrous phosphate lithium battery is made: with shelving behind the battery liquid-filling under 30 ℃ of environment, and whenever at a distance from the 4h upset once change one and face down, shelve 24h altogether, forming and capacity dividing obtains 120Ah lithium titanate-ferrous phosphate lithium battery.
Embodiment 2
The preceding operation that lithium titanate-lithium manganate battery is made: anode sizing agent contains 90% LiMn2O4,5%LA132,5% carbon black; Cathode size contains 88% lithium titanate, 5%LA132,7% carbon black; The positive and negative electrode slurry is uniformly coated on respectively on the aluminium foil, and through baking, roll-in cuts into positive and negative plate, and pole piece gets into the lamination operation through vacuum bakeout, is assembled into electric core and is packaged in plastic casing, vacuum bakeout.
The back operation that lithium titanate-lithium manganate battery is made, battery liquid-filling changes into, and uses Elastic clamping plate to clamp the middle part when changing into, and explosion-proof valve adopts spring openable vent valve.After changing into battery is positioned over ageing 6h under 35 ℃ of environment, partial volume obtains 140Ah lithium titanate-lithium manganate battery.
Embodiment 3
The preceding operation that lithium titanate-ferrous phosphate lithium battery is made is with embodiment 1.
The back operation that lithium titanate-ferrous phosphate lithium battery is made: with being held on behind the battery liquid-filling under 20 ℃ of environment; And every separated 1h upset once; Change one and face down, change into behind the 12h, use Elastic clamping plate to clamp the middle part when changing into; Change into battery is positioned over ageing 12h under 20 ℃ of environment, partial volume obtains 120Ah lithium titanate-ferrous phosphate lithium battery.
Embodiment 4
The preceding operation that lithium titanate-lithium manganate battery is made is with embodiment 2.
The back operation that lithium titanate-lithium manganate battery is made: with being held on behind the battery liquid-filling under 45 ℃ of environment; And every separated 3h upset once, changes one and face down, and changes into behind the 6h; Use Elastic clamping plate to clamp the middle part when changing into; Change into battery is positioned over ageing 9h under 45 ℃ of environment, get into partial volume, obtain 140Ah lithium titanate-lithium manganate battery.
Comparative Examples 1
Anode sizing agent contains 90% LiMn2O4,5%LA132,5% carbon black; Cathode size contains 88% lithium titanate, 5%LA132,7% carbon black; The positive and negative electrode slurry is uniformly coated on respectively on the aluminium foil, and through baking, roll-in cuts into positive and negative plate; Pole piece gets into the lamination operation through vacuum bakeout, is assembled into electric core and is packaged in plastic casing; Vacuum bakeout, fluid injection, forming and capacity dividing 140Ah lithium titanate-lithium manganate battery.
Survey internal resistance behind embodiment 1 battery liquid-filling and change, the internal resistance change curve is as shown in Figure 1.Can know that by figure the internal resistance change procedure explain that electrolyte has carried out physical diffusion effectively in inside, it is thus clear that, shelve a period of time after the fluid injection and can improve the performance of battery.
Shown in embodiment 2 battery partial volume discharge curve Fig. 2, can know discharge minimum voltage 1.5V by figure.
1c cyclic curve such as Fig. 3 of embodiment 3 batteries can know that by figure discharge capacity is stabilized in about 120Ah, demonstrates excellent cycle performance.
Embodiment 4 compares with the 140Ah lithium titanate-lithium manganate battery of Comparative Examples 1; Battery is shelved 20 h after accomplishing, and can know that by figure embodiment 4 cell thickness, internal resistance during this period of time do not have significant change; The thickness of Comparative Examples 1 battery and internal resistance are all increasing; Thickness has increased 10mm, and internal resistance has increased by 0.21 m Ω, and is as shown in table 1.
Claims (2)
1. one kind is the back operation processing method of the battery manufacturing of negative pole with the lithium titanate, comprises the steps:
1) shelves 6 ~ 12h in 20 ~ 45 ℃ behind the battery liquid-filling;
2) clamping the battery central region with Elastic clamping plate changes into;
3) take off Elastic clamping plate after changing into, get into partial volumes, obtain the lithium ion battery that a kind of lithium titanate is a negative pole at 20 ~ 45 ℃ of ageing 6 ~ 12h.
2. according to claim 1 a kind of be the back operation processing method that the battery of negative pole is made with the lithium titanate, it is characterized in that: shelve during 6 ~ 12h behind the said battery liquid-filling of step 1), every at a distance from 1 ~ 4h upset simultaneously.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102200441A CN102340031A (en) | 2011-08-03 | 2011-08-03 | Follow-up process treatment method for manufacturing battery by taking lithium titanate as cathode |
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| CN2011102200441A CN102340031A (en) | 2011-08-03 | 2011-08-03 | Follow-up process treatment method for manufacturing battery by taking lithium titanate as cathode |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104037456A (en) * | 2014-06-16 | 2014-09-10 | 张晶晶 | Rapid forming process of iron phosphate lithium battery |
| CN104953181A (en) * | 2015-05-06 | 2015-09-30 | 中国科学院青岛生物能源与过程研究所 | Process for inhibiting air expansion of lithium ion battery by using lithium titanate as negative electrode |
| CN106025365A (en) * | 2016-07-05 | 2016-10-12 | 深圳市海太阳实业有限公司 | Making method of battery and battery |
| CN106067561A (en) * | 2016-07-19 | 2016-11-02 | 湖北金泉新材料有限责任公司 | A kind of lithium ion battery chemical synthesis technology |
| CN110336083A (en) * | 2019-07-08 | 2019-10-15 | 无锡市明杨新能源有限公司 | The chemical synthesizing method of high-multiplying power discharge lithium ion battery |
| CN110707365A (en) * | 2019-09-27 | 2020-01-17 | 东莞汇洋动力科技有限公司 | Lithium ion battery liquid injection method and lithium ion battery |
| CN111446504A (en) * | 2020-04-02 | 2020-07-24 | 新乡华锐锂电新能源有限公司 | Rapid formation and grading method for soft package battery using high-voltage electrolyte |
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| CN1367547A (en) * | 2002-01-31 | 2002-09-04 | 江门三捷电池实业有限公司 | Method for manufacturing flexible-packaged lithium secondary cell |
| WO2009056032A1 (en) * | 2007-10-26 | 2009-05-07 | Byd Company Limited | A method for preparing lithium-ion rechargeable batteries |
| CN101626097A (en) * | 2009-06-05 | 2010-01-13 | 长沙高新开发区材盛新能源科技有限公司 | High-liquid absorbing rate micro-nano structure polymer electrolyte membrane and preparation method thereof |
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- 2011-08-03 CN CN2011102200441A patent/CN102340031A/en active Pending
Patent Citations (3)
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| CN1367547A (en) * | 2002-01-31 | 2002-09-04 | 江门三捷电池实业有限公司 | Method for manufacturing flexible-packaged lithium secondary cell |
| WO2009056032A1 (en) * | 2007-10-26 | 2009-05-07 | Byd Company Limited | A method for preparing lithium-ion rechargeable batteries |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104037456A (en) * | 2014-06-16 | 2014-09-10 | 张晶晶 | Rapid forming process of iron phosphate lithium battery |
| CN104037456B (en) * | 2014-06-16 | 2016-09-07 | 中能东道集团有限公司 | The quick chemical synthesis technology of ferric phosphate lithium cell |
| CN104953181A (en) * | 2015-05-06 | 2015-09-30 | 中国科学院青岛生物能源与过程研究所 | Process for inhibiting air expansion of lithium ion battery by using lithium titanate as negative electrode |
| CN104953181B (en) * | 2015-05-06 | 2017-12-12 | 中国科学院青岛生物能源与过程研究所 | A kind of technique suppressed using lithium titanate as the lithium ion battery flatulence of negative pole |
| CN106025365A (en) * | 2016-07-05 | 2016-10-12 | 深圳市海太阳实业有限公司 | Making method of battery and battery |
| CN106067561A (en) * | 2016-07-19 | 2016-11-02 | 湖北金泉新材料有限责任公司 | A kind of lithium ion battery chemical synthesis technology |
| CN110336083A (en) * | 2019-07-08 | 2019-10-15 | 无锡市明杨新能源有限公司 | The chemical synthesizing method of high-multiplying power discharge lithium ion battery |
| CN110707365A (en) * | 2019-09-27 | 2020-01-17 | 东莞汇洋动力科技有限公司 | Lithium ion battery liquid injection method and lithium ion battery |
| CN111446504A (en) * | 2020-04-02 | 2020-07-24 | 新乡华锐锂电新能源有限公司 | Rapid formation and grading method for soft package battery using high-voltage electrolyte |
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Owner name: ZHUHAI LITHIUM NEW ENERGY TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: ZHUHAI LIYUAN POWER TECHNOLOGY CO., LTD. Effective date: 20120112 |
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Effective date of registration: 20120112 Address after: 519000 Guangdong Province, Zhuhai city Xiangzhou District Jida Waterfront Road No. 47 room 1206 Applicant after: Zhuhai Liyuan New Energy Technology Co., Ltd. Address before: 519015 Guangdong province Zhuhai Jida Waterfront Road No. 47 Everbright 1205 Applicant before: Zhuhai Liyuan Power Technology Co., Ltd. |
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Application publication date: 20120201 |