CN102832410A - Formation method for lithium ion battery - Google Patents
Formation method for lithium ion battery Download PDFInfo
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- CN102832410A CN102832410A CN2012103094073A CN201210309407A CN102832410A CN 102832410 A CN102832410 A CN 102832410A CN 2012103094073 A CN2012103094073 A CN 2012103094073A CN 201210309407 A CN201210309407 A CN 201210309407A CN 102832410 A CN102832410 A CN 102832410A
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- battery
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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 formation method for a lithium ion battery. Over-charging is avoided, and the low capacity ratio of the battery can be lowered. In an environment of -20 to 45 DEG C, the method comprises the following steps of: performing 0.05 to 0.2-time constant current charging on the lithium ion battery for 3 to 5 hours, and setting cutoff voltage to be 3.0 to 4.0 volts, wherein a gas can be generated in the battery after the charging is finished; disassembling the battery, and performing a vacuumizing packaging procedure to exhaust the gas generated by the internal formation process of the battery; performing 0.2 to 30-time constant current charging on the lithium ion battery, and setting the cutoff voltage to be 3.0 to 4.0 volts; and performing constant voltage charging on the lithium ion battery, and setting cutoff current to be 0.001 to 0.02 time. The method has the advantages that local over-charging is prevented, the low capacity ratio of the battery can be remarkably lowered, and the consistency of the battery can be improved.
Description
Technical field
The present invention relates to a kind of compound method for lithium ion battery.
Background technology
At present, compound method for lithium ion battery is: the battery after fluid injection is soaked into is with the little electric current constant current charge of 0.01～0.04 multiplying power, and the charging interval is 0.5～5 hour; Again with the big electric current constant current charge of 0.05～2 multiplying power; After charging voltage is 3.65～4.5 volts, let battery get into the constant voltage charge stage again, voltage remains between 3.65～4.5 volts; When electric current to be charged is decreased to 0.001～0.02 multiplying power, stops charging and promptly change into end.It is serious to adopt the battery of above-mentioned chemical synthesizing method to change into aerogenesis, occurs the part easily and overcharges and cause electrolyte decomposition and cathode pole piece surface to produce piebald, analyse defective such as lithium, has a strong impact on the capacity of battery and the conforming problem between battery.Simultaneously, also there is long, the artificial problem that has high input of equipment of the time of changing in above-mentioned chemical synthesizing method.
Summary of the invention
Technical problem to be solved by this invention is: a kind of compound method for lithium ion battery that overcharges and can reduce the low appearance ratio of battery that can not produce is provided.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of compound method for lithium ion battery, carry out following steps under-20～45 ℃ environment:
(1) earlier lithium ion battery was carried out 0.05～0.2 multiplying power constant current charge 3～5 hours, set by 3.0～4.0 volts of voltages, after charging finished, inside battery can produce gas;
(2) machine vacuumizes envelope nail operation under the battery, takes the gas that the inside battery formation process produces away;
(3) again lithium ion battery is carried out 0.2～30 multiplying power constant current charge, set by 3.0～4.0 volts of voltages;
(4) at last lithium ion battery is carried out the constant-voltage phase charging, setting by electric current is 0.001～0.02 multiplying power.
The invention has the beneficial effects as follows: reduce first step by voltage and vacuumize envelope nail continued and change into, can avoid effectively that the too high part that causes of local voltage overcharges in the battery formation process, can obviously reduce the low appearance ratio of battery and improve battery consistency; Adopt simultaneously than large current charge, do not influence battery performance, the time that changes into significantly shortens, and can significantly improve production capacity, and the input that minimizing equipment is artificial has favorable economic benefit.Process of the present invention is simple simultaneously, easily control.
Embodiment
Describe specific embodiments of the present invention in detail.
Compound method for lithium ion battery of the present invention, carry out following steps under-20～45 ℃ environment:
(1) earlier lithium ion battery was carried out 0.05～0.2 multiplying power constant current charge 3～5 hours, set by 3.0～4.0 volts of voltages, after charging finished, inside battery can produce gas;
(2) machine vacuumizes envelope nail operation under the battery, takes the gas that the inside battery formation process produces away, and the assurance battery pole piece can not produce to overcharge analyses the lithium phenomenon;
(3) again lithium ion battery is carried out 0.2～30 multiplying power constant current charge, set by 3.0～4.0 volts of voltages; Continue to change into the SEI film that can guarantee battery and form stablely, improving battery capacity is cycle performance.
(4) at last lithium ion battery is carried out the constant-voltage phase charging, setting by electric current is 0.001～0.02 multiplying power.
First kind of execution mode of the present invention: under-20 ℃ environment, carry out following steps:
(1) earlier lithium ion battery was carried out 0.05 multiplying power constant current charge 3 hours, set by 3.0 volts of voltages, after charging finished, inside battery can produce gas;
(2) machine vacuumizes envelope nail operation under the battery, takes the gas that the inside battery formation process produces away;
(3) again lithium ion battery is carried out 0.2 multiplying power constant current charge, set by 3.0 volts of voltages;
(4) at last lithium ion battery is carried out the constant-voltage phase charging, setting by electric current is 0.001 multiplying power.
Second kind of execution mode of the present invention: under 45 ℃ environment, carry out following steps:
(1) earlier lithium ion battery was carried out 00.2 multiplying power constant current charge 5 hours, set by 4.0 volts of voltages, after charging finished, inside battery can produce gas;
(2) machine vacuumizes envelope nail operation under the battery, takes the gas that the inside battery formation process produces away;
(3) again lithium ion battery is carried out 30 multiplying power constant current charges, set by 4.0 volts of voltages;
(4) at last lithium ion battery is carried out the constant-voltage phase charging, setting by electric current is 0.02 multiplying power.
The third execution mode of the present invention: under 0 ℃ environment, carry out following steps:
(1) earlier lithium ion battery was carried out 1.5 multiplying power constant current charges 4 hours, set by 3.5 volts of voltages, after charging finished, inside battery can produce gas;
(2) machine vacuumizes envelope nail operation under the battery, takes the gas that the inside battery formation process produces away;
(3) again lithium ion battery is carried out 10 multiplying power constant current charges, set by 3.5 volts of voltages;
(4) at last lithium ion battery is carried out the constant-voltage phase charging, setting by electric current is 0.006 multiplying power.
The 4th kind of execution mode of the present invention: under 20 ℃ environment, carry out following steps:
(1) earlier lithium ion battery was carried out 0.18 multiplying power constant current charge 4.5 hours, set by 3.7 volts of voltages, after charging finished, inside battery can produce gas;
(2) machine vacuumizes envelope nail operation under the battery, takes the gas that the inside battery formation process produces away;
(3) again lithium ion battery is carried out 25 multiplying power constant current charges, set by 3.8 volts of voltages;
(4) at last lithium ion battery is carried out the constant-voltage phase charging, setting by electric current is 0.008 multiplying power.
Adopting the standardization required charging interval of chemical synthesizing method is 13 hours, and discharge capacity is 137.4mAh/g.This standardization chemical synthesizing method causes the cathode pole piece surface reaction of battery inhomogeneous easily, has tangible piebald, analyses the generation of lithium phenomenon.And adopt method of the present invention to charge, and the discharge capacity of the cell that changes into is 139.5mAh/g, and gram volume performance obviously improves, and the cathode pole piece surface reaction of battery is even, no piebald, analyses the generation of lithium phenomenon, can greatly improve the consistency between the battery.The present invention is easy to operate, and technical process is simple, can effectively improve the capacity of battery and the consistency of battery pack, and shorten the time that changes into and improve production capacity, be a kind of compound method for lithium ion battery efficiently.
Claims (1)
1. compound method for lithium ion battery is characterized in that: under-20～45 ℃ environment, carry out following steps:
(1) earlier lithium ion battery was carried out 0.05～0.2 multiplying power constant current charge 3～5 hours, set by 3.0～4.0 volts of voltages, after charging finished, inside battery can produce gas;
(2) machine vacuumizes envelope nail operation under the battery, takes the gas that the inside battery formation process produces away;
(3) again lithium ion battery is carried out 0.2～30 multiplying power constant current charge, set by 3.0～4.0 volts of voltages;
(4) at last lithium ion battery is carried out the constant-voltage phase charging, setting by electric current is 0.001～0.02 multiplying power.
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| CN2012103094073A CN102832410A (en) | 2012-08-28 | 2012-08-28 | Formation method for lithium ion battery |
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| CN2012103094073A CN102832410A (en) | 2012-08-28 | 2012-08-28 | Formation method for lithium ion battery |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106129505A (en) * | 2016-07-19 | 2016-11-16 | 珠海光宇电池有限公司 | A kind of compound method for lithium ion battery |
| CN106207293A (en) * | 2016-07-25 | 2016-12-07 | 珠海光宇电池有限公司 | The chemical synthesizing method of lithium ion battery |
| CN109148991A (en) * | 2018-10-09 | 2019-01-04 | 邓丽萍 | A kind of chemical synthesizing method of long-life flexible-packed battery |
| CN109546248A (en) * | 2018-11-30 | 2019-03-29 | 合肥国轩高科动力能源有限公司 | A kind of optimization method of lithium ion battery charging strategy |
| CN110797579A (en) * | 2019-11-07 | 2020-02-14 | 蒋子杰 | Formation method of flexible package lithium ion battery with ternary material as anode |
| CN111180800A (en) * | 2020-03-04 | 2020-05-19 | 广东博龙能源科技有限公司 | Formation process of lithium ion battery and lithium ion battery |
Citations (4)
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| CN101330158A (en) * | 2007-06-22 | 2008-12-24 | 比亚迪股份有限公司 | Method for forming lithium ion secondary battery |
| CN101626099A (en) * | 2009-08-08 | 2010-01-13 | 东莞市迈科科技有限公司 | Polymer vanadium lithium phosphate power battery and preparation method thereof |
| CN102185166A (en) * | 2011-04-06 | 2011-09-14 | 恒正科技（苏州）有限公司 | Battery forming and repairing method |
| CN102299385A (en) * | 2011-07-29 | 2011-12-28 | 南京双登科技发展研究院有限公司 | Soft package lithium iron phosphate power battery initial charge formation method |
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2012
- 2012-08-28 CN CN2012103094073A patent/CN102832410A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101330158A (en) * | 2007-06-22 | 2008-12-24 | 比亚迪股份有限公司 | Method for forming lithium ion secondary battery |
| CN101626099A (en) * | 2009-08-08 | 2010-01-13 | 东莞市迈科科技有限公司 | Polymer vanadium lithium phosphate power battery and preparation method thereof |
| CN102185166A (en) * | 2011-04-06 | 2011-09-14 | 恒正科技（苏州）有限公司 | Battery forming and repairing method |
| CN102299385A (en) * | 2011-07-29 | 2011-12-28 | 南京双登科技发展研究院有限公司 | Soft package lithium iron phosphate power battery initial charge formation method |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106129505A (en) * | 2016-07-19 | 2016-11-16 | 珠海光宇电池有限公司 | A kind of compound method for lithium ion battery |
| CN106207293A (en) * | 2016-07-25 | 2016-12-07 | 珠海光宇电池有限公司 | The chemical synthesizing method of lithium ion battery |
| CN109148991A (en) * | 2018-10-09 | 2019-01-04 | 邓丽萍 | A kind of chemical synthesizing method of long-life flexible-packed battery |
| CN109148991B (en) * | 2018-10-09 | 2019-12-17 | 江门市力源电子有限公司 | formation method of long-life flexible package battery |
| CN109546248A (en) * | 2018-11-30 | 2019-03-29 | 合肥国轩高科动力能源有限公司 | A kind of optimization method of lithium ion battery charging strategy |
| CN110797579A (en) * | 2019-11-07 | 2020-02-14 | 蒋子杰 | Formation method of flexible package lithium ion battery with ternary material as anode |
| CN110797579B (en) * | 2019-11-07 | 2021-08-24 | 蒋子杰 | Formation method of flexible package lithium ion battery with ternary material as anode |
| CN111180800A (en) * | 2020-03-04 | 2020-05-19 | 广东博龙能源科技有限公司 | Formation process of lithium ion battery and lithium ion battery |
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Application publication date: 20121219 |