CN102403536B - Formation method for cylindrical lithium battery - Google Patents
Formation method for cylindrical lithium battery Download PDFInfo
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- CN102403536B CN102403536B CN2011103889127A CN201110388912A CN102403536B CN 102403536 B CN102403536 B CN 102403536B CN 2011103889127 A CN2011103889127 A CN 2011103889127A CN 201110388912 A CN201110388912 A CN 201110388912A CN 102403536 B CN102403536 B CN 102403536B
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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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Abstract
The invention provides a formation method for a cylindrical lithium battery. In the formation process, three and a half charge-discharge cycles are performed; meanwhile, a solid electrolyte interface (SEI) film of the negative electrode of a battery is formed, and the capacity grading and low-voltage screening of the battery are performed. By the method, cylindrical lithium battery with a steel shell is manufactured, the formation cycle times are reduced, and process parameters are optimized, so the process is simplified and standardized, production cycle is shortened, and production cost is effectively reduced. Moreover, the method is convenient to operate, and suitable for bulk production; and by the method, quality of products can be guaranteed.
Description
Technical field
The present invention relates to the lithium ion battery manufacture method, is specifically a kind of formation method for cylindrical lithium battery take metal-back as shell.
Background technology
Today that lithium ion battery is growing, the compact lithium cell manufacture craft is more and more ripe, each producer's dog-eat-dog, and profit margin is more and more less, has just become the task of top priority so reduce production costs.Lithium battery has dividing of flexible package and metal-back (take box hat as main), and the former need to bleed and the secondary heat-sealing, and the latter need not bleed, and seals mouth and just changes into.Cylindrical lithium battery is mainly take box hat as main, and it is loaded down with trivial details that existing cylindrical lithium battery changes into work step, changes into the time long, and equipment investment is large, and power consumption is many, wastes time and energy, thereby greatly affects the production cost of battery.
Summary of the invention
The object of the invention is to overcome the weak point in existing formation of Li-ion batteries, provide a kind of working specification, the formation method for cylindrical lithium battery that reduces production costs.
Technical scheme of the present invention is: formation method for cylindrical lithium battery, after the battery acid filling, carry out repeatedly charge and discharge cycles, and its improvements are that the method is carried out as follows:
(1) normal temperature shelf 4～12h after the battery acid filling fully infiltrates rear upper formation cabinet until pole piece and barrier film;
(2) carry out the charge and discharge cycles in three cycles, the first circulation: divide 1～3 stage to charge to full voltage with 0.05C～0.2C electric current, be discharged to battery discharge voltage with the 1C electric current or by the battery high rate performance again after standing; The second circulation: the rate of charge according to battery charges to full voltage, presses the battery discharge multiplying power discharging to discharge voltage after standing again; The 3rd circulation: identical with the second circulation;
(3) screening capacity is qualified more than or equal to the battery of nominal capacity 80%, and all the other batteries repeat to continue screening, battery normal temperature shelf 45～50h that primary election and final election are qualified after the 3rd circulation;
(4) above-mentioned qualified battery is carried out low pressure and detects, more than or equal to the low-voltage standards value be final qualified battery, all the other batteries repeat again to detect low pressure after the 3rd circulation is shelved, what meet the low-voltage standards value is also final qualified battery;
(5) final qualified battery is carried out the half cycle circulation, namely adopt constant current charge to stored voltage, lower cabinet warehouse-in.
In the charging process of above-mentioned the first circulation, be constant current charge, the multistage, when charging, each stage electric current was different.
The present invention changes into for the cylindrical lithium battery that adopts box hat, and technological specification is easy to operate, applicable batch production, can guarantee the product quality requirement, only carry out three week half circulations in particularly changing into, complete simultaneously the formation of battery cathode SEI film, and the partial volume of battery and low pressure screening, technique has not only been simplified in the minimizing of cycle-index, has shortened the production cycle, also save the electric cost in the battery production, cost of labor, equipment cost etc., thereby effectively reduced production cost.
Embodiment
Illustrate the present invention below by embodiment.
Make rate cylindrical lithium battery 18500, multiplying power discharging is 10C, and capacity is 1100mAh.The changing into of battery, partial volume and screening low pressure work step all carry out on formation cabinet, are referred to as changing into of battery, carry out as follows:
Change into work step:
1, standing: 5min.
2, constant current charge: 0.05C charge cutoff voltage 3.4V cut-off in 480 minutes.
3, constant-current constant-voltage charging: 0.2C charge cutoff voltage 4.2V cut-off current 0.05C.
4, standing 30min.
5, constant-current discharge: 10C discharge cut-off voltage 3.0V 90min discharge time.
6, standing: 5min.
7, constant-current constant-voltage charging: 1C charge cutoff voltage 4.2V cut-off current 0.05C charging interval 90min.
8, standing: 5min.
9, constant-current discharge: 10C discharge cut-off voltage 3.0V 90min discharge time.
10, standing: 5min.
The partial volume work step:
11, constant-current constant-voltage charging: 1C charge cutoff voltage 4.2V cut-off current 0.05C charging interval 90min.
12, standing: 5min.
13, constant-current discharge: 10C discharge, cut-ff voltage 3.0V 90min discharge time, capacity are that 880mAh is above for qualified.
This time discharge capacity is the actual capacity of battery, and class as requested carries out the capacity stepping.The battery that partial volume is qualified turns lower road work step, and the underproof battery of partial volume is rechecked, and rechecks road work step under qualified turning, underproof scrapping.The method of the rechecking subdivision of attaching most importance to is held work step partial volume again.
14, normal temperature shelf: 48 hours.
Select the low pressure work step:
15, the qualified battery after normal temperature shelf is carried out voltage tester, voltage is A-battery lower than 3.0V's, and voltage is not less than the qualified battery that is of 3.0V, qualified battery changes lower road work step over to.Defective battery repetition partial volume work step so far work step is selected low pressure again, and it is qualified that voltage is not less than 3.0V, scraps lower than the battery of 3.0V.
16, constant current charge: 1C constant current charge cut-ff voltage 3.9V.
17, warehouse-in stores.
18, finish.
Claims (2)
1. a formation method for cylindrical lithium battery, after the battery acid filling, carry out repeatedly charge and discharge cycles, it is characterized in that the method carries out as follows:
(1) normal temperature shelf 4～12h after the battery acid filling fully infiltrates rear upper formation cabinet until pole piece and barrier film;
(2) carry out the charge and discharge cycles in three cycles, the first circulation: divide 1～3 stage to charge to full voltage with 0.05C～0.2C electric current, be discharged to battery discharge voltage by the battery high rate performance again after standing; The second circulation: the rate of charge according to battery charges to full voltage, presses the battery discharge multiplying power discharging to discharge voltage after standing again; The 3rd circulation: identical with the second circulation;
(3) screening capacity is qualified more than or equal to the battery of nominal capacity 80%, and all the other batteries repeat to continue screening, battery normal temperature shelf 45～50h that primary election and final election are qualified after the 3rd circulation;
(4) above-mentioned qualified battery is carried out low pressure and detects, more than or equal to the low-voltage standards value be final qualified battery, all the other batteries repeat again to detect low pressure after the 3rd circulation is shelved, what meet the low-voltage standards value is also final qualified battery;
(5) final qualified battery is carried out the half cycle circulation, namely adopt constant current charge to stored voltage, lower cabinet warehouse-in.
2. by formation method for cylindrical lithium battery claimed in claim 1, it is characterized in that being constant current charge in the charging process of described the first circulation, the multistage, when charging, each stage electric current was different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103889127A CN102403536B (en) | 2011-11-30 | 2011-11-30 | Formation method for cylindrical lithium battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103889127A CN102403536B (en) | 2011-11-30 | 2011-11-30 | Formation method for cylindrical lithium battery |
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| CN102403536A CN102403536A (en) | 2012-04-04 |
| CN102403536B true CN102403536B (en) | 2013-11-06 |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102916224B (en) * | 2012-09-20 | 2016-03-23 | 东莞新能源科技有限公司 | A kind of compound method for lithium ion battery |
| FR2997795B1 (en) * | 2012-11-02 | 2014-11-21 | Renault Sa | LITHIUM BATTERY |
| CN103894350B (en) * | 2014-03-26 | 2016-08-24 | 山东精工电子科技有限公司 | The partial volume screening method for group matching of cylindrical lithium battery |
| CN105070963B (en) * | 2015-08-22 | 2017-07-04 | 河南省东雷锂电有限公司 | The optimization method of high-multiplying power lithium ion battery SEI films |
| CN106025364A (en) * | 2016-06-30 | 2016-10-12 | 中天储能科技有限公司 | Lithium-capacity low-consumption lithium-ion battery formation method |
| CN106129506B (en) * | 2016-08-12 | 2019-07-19 | 合肥国轩高科动力能源有限公司 | A kind of compound method for lithium ion battery |
| CN107039681B (en) * | 2016-08-22 | 2019-06-18 | 杜文龙 | A kind of old dynamic lithium battery improves the charging method of internal resistance consistency |
| CN106229572B (en) * | 2016-08-25 | 2019-07-12 | 合肥国轩高科动力能源有限公司 | A kind of chemical synthesizing method for inhibiting nickelic ternary battery high-temperature circulation to produce gas |
| CN109148989A (en) * | 2018-09-04 | 2019-01-04 | 海口博澳国兴新能源科技有限公司 | Novel lithium ion battery production and application method |
| CN111375568A (en) * | 2018-12-29 | 2020-07-07 | 天臣新能源（渭南）有限公司 | Method for finished product battery core screening stage |
| CN110380146B (en) * | 2019-06-11 | 2022-03-04 | 中国电力科学研究院有限公司 | Lithium ion battery target formation method and lithium ion battery |
| CN110412480A (en) * | 2019-07-10 | 2019-11-05 | Oppo广东移动通信有限公司 | Battery screening technique, device and computer storage medium and test macro |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5561360A (en) * | 1994-05-02 | 1996-10-01 | General Motors Corporation | Battery cycle life improvements through bifurcated recharge method |
| JP4747549B2 (en) * | 2004-10-14 | 2011-08-17 | パナソニック株式会社 | Lead-acid battery charging method |
| CN100414764C (en) * | 2006-09-03 | 2008-08-27 | 内蒙古稀奥科镍氢动力电池有限公司 | Precharging technique for forming nickel hydrogen battery |
| CN101308943B (en) * | 2008-06-06 | 2010-06-02 | 恒正科技（苏州）有限公司 | Lithium ionic cell formation processing method |
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Owner name: SHOTO GROUP CO., LTD. Free format text: FORMER OWNER: SHUANGDENG SCIENCE + TECHNOLOGY DEVELOPMENT ACADEMY CO., LTD., NANJING CITY Effective date: 20150730 |
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Effective date of registration: 20150730 Address after: 225500 No. 999 West Tianmu Road, Jiangyan Economic Development Zone, Taizhou, Jiangsu Patentee after: Shoto Group Co., Ltd. Address before: Double Dengke Park Liang Xu town of Jiangyan city in Jiangsu province Taizhou City, No. 1, 225526 Patentee before: Shuangdeng Science & Technology Development Academy Co., Ltd., Nanjing City |