CN101872879A - Chemical combination method of lithium-ion recharging battery - Google Patents
Chemical combination method of lithium-ion recharging battery Download PDFInfo
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- CN101872879A CN101872879A CN201010191863A CN201010191863A CN101872879A CN 101872879 A CN101872879 A CN 101872879A CN 201010191863 A CN201010191863 A CN 201010191863A CN 201010191863 A CN201010191863 A CN 201010191863A CN 101872879 A CN101872879 A CN 101872879A
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- Prior art keywords
- charging
- lithium ion
- ion secondary
- rechargeable battery
- voltage
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- 238000000034 method Methods 0.000 title claims abstract description 26
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 21
- 239000000126 substance Substances 0.000 title claims abstract description 16
- 230000002194 synthesizing effect Effects 0.000 claims description 12
- 230000032683 aging Effects 0.000 claims description 8
- 230000029087 digestion Effects 0.000 claims description 3
- 239000003792 electrolyte Substances 0.000 abstract description 6
- 230000015572 biosynthetic process Effects 0.000 description 8
- 230000005012 migration Effects 0.000 description 4
- 238000013508 migration Methods 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 3
- 239000007774 positive electrode material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000007772 electrode material Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 229910012851 LiCoO 2 Inorganic materials 0.000 description 1
- 229910010707 LiFePO 4 Inorganic materials 0.000 description 1
- 229910052493 LiFePO4 Inorganic materials 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229940116007 ferrous phosphate Drugs 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910000155 iron(II) phosphate Inorganic materials 0.000 description 1
- SDEKDNPYZOERBP-UHFFFAOYSA-H iron(ii) phosphate Chemical compound [Fe+2].[Fe+2].[Fe+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O SDEKDNPYZOERBP-UHFFFAOYSA-H 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
Classifications
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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
Abstract
The invention relates to a chemical combination method of a lithium-ion recharging battery, which can be used for preparing the lithium-ion recharging battery with high electrolyte residual quantity, capacity, multiplying power discharge performance and circulating performance. The chemical combination method has the technical scheme that closed chemical combination is adopted, the battery is charged in three stages in a constant-current way, and the battery is then charged in a constant-voltage.
Description
Technical field
The present invention relates to a kind of chemical synthesizing method of lithium ion secondary rechargeable battery.
Background technology
Battery all must change into before use, so that the active material of activated batteries positive and negative electrode, thus the optimum state that battery is reached discharge and recharge.The step that changes into of lithium ion secondary rechargeable battery is to make the important stage of battery, changes into many-sided qualities such as the capacity height that is related to battery, cycle life length, security performance.Change into the process of battery being carried out initial charge that is meant.
With the maximally related prior art of the present invention be, the disclosed technical scheme of publication number CN181591C patent, although this patent has the battery of preventing bulge and inflatable, be easy to control cell thickness, advantage that security performance is good, but have low electrolyte residual volume and capacity, low multiplying power discharging property, low deficiencies such as cycle performance.
Summary of the invention
Goal of the invention of the present invention is to provide a kind of chemical synthesizing method of lithium ion secondary rechargeable battery, can make to have high electrolyte residual volume, high power capacity, high-rate discharge ability and high lithium ion secondary battery.
Realize technical scheme of the present invention:
A kind of chemical synthesizing method of lithium ion secondary rechargeable battery is characterized in that: adopting remains silent changes into, and divides three phases that battery is carried out constant current charge earlier, again battery is carried out constant voltage charge.
Leave the time interval between each charging stage.
Three constant current charge stages are adopted different charging currents, and charging current increases progressively successively.
Phase I constant current charge electric current is 0.01～0.05C, and the cut-ff voltage of charging is 2.0～2.5V; Second stage constant current charge electric current is 0.1～0.15C, and the cut-ff voltage of charging is 3.0～3.2V; Phase III constant current charge electric current is 0.2C, and the cut-ff voltage of charging is 3.6～3.8V.
The charging voltage in constant voltage charge stage is 3.6～3.8V, and cut-off current is 0.01C.
The time interval between each charging stage is 5～15 minutes, and a back blanking time is greater than last blanking time.
The temperature that changes into of remaining silent is 35～80 ℃.
All need before and after changing into battery is carried out ageing, 35～80 ℃ of ageing temperature, digestion time is 48～72 hours.
The beneficial effect that the present invention has:
The present invention adopts to remain silent and changes into, and divides three phases that battery is carried out constant current charge earlier, again battery is carried out constant voltage charge, leaves the time interval between each charging stage.Stop battery being charged in this time interval, at this moment, the gas that inside battery produces can fully absorb, thereby a large amount of gases that can effectively avoid producing in charging process cause bulging.In addition, because in the process of producing, there is inhomogeneities in positive/negative plate, therefore when charging under the certain situation of electric current, to cause the pole piece surface potential there are differences, thereby part surface is existed to overcharge, according to method of the present invention, in the described time interval that stops to charge, the electronics that also helps the high potential on battery pole piece surface moves to the direction of electronegative potential, thereby reach whole pole piece current potential unanimity, help the formation of SEI film, the possibility that the pole piece part overcharges when having avoided subsequent charge, thereby improved the cycle performance of battery, and big electric current helps forming uniform and stable flexible SEI film at electrode surface behind the little electric current earlier, thereby has improved the capacity sustainment rate of battery greatly, has improved the cycle performance of battery.The constant voltage charge stage after the constant-current phase helps fully changing into battery, fully excite deviating from fully of positive active material core lithium ion, this part takes off the lithium amount and can be used for remedying in the initial charge process, the irreversible capacity that is used to form the SEI film and loses, performance has very great help to capacity.
The lithium rechargeable battery of the present invention temperature that changes into of remaining silent is 35-80 ℃, can improve the migration rate of lithium ion, effectively reduce the degree of polarization that causes owing to material electric conductivity is low in the battery formation process, thereby effectively promote the formation of SEI film in the ferrous phosphate lithium ion battery formation process.The temperature that improves simultaneously environment in formation process can reduce in the formation process viscosity of electrolyte in the battery, improve the ions diffusion ability of electrolyte, form good ion migration environment, improve the ion migration rate in the formation process, thereby improved the migration rate of iron cell, so just can effectively reduce because positive active material LiFePO
4Than LiCoO
2The low polarization that conductivity caused can effectively form more complete SEI film in formation process, improve the utilance of material.Thereby when improving the capacity of lithium ion battery that positive active material is a LiFePO4, can also improve the cycle performance and the multiplying power discharging property of battery.
Before charging, electrode active material fully can be soaked in order to make electrolyte, effectively utilize electrode active material, need carry out ageing to battery; After charging is finished, more stable for the feasible formed SEI film of stage that changes into, also need battery is carried out ageing.
Embodiment
Embodiment one:
Employing is remained silent and is changed into, and the temperature that changes into of remaining silent is preferably 35～60 ℃, divides three phases that battery is carried out constant current charge earlier, again battery is carried out constant voltage charge, leave the time interval between each charging stage, three constant current charge stages are adopted different charging currents, and charging current increases progressively successively.
Phase I constant current charge electric current is 0.02C (C is a battery capacity), and the cut-ff voltage of charging is 2.2V; Second stage constant current charge electric current is 0.12C, and the cut-ff voltage of charging is 3.1V; Phase III constant current charge electric current is 0.2C, and the cut-ff voltage of charging is 3.7V.The charging voltage in constant voltage charge stage is 3.7V, and cut-off current is 0.01C.The time interval between each charging stage is 5～15 minutes, and a back blanking time is greater than last blanking time.All need before and after changing into battery is carried out ageing, 35～80 ℃ of ageing temperature, digestion time is 48～72 hours.
Embodiment two:
Phase I constant current charge electric current is 0.03C, and the cut-ff voltage of charging is 2.3V; Second stage constant current charge electric current is 0.14C, and the cut-ff voltage of charging is 3.2V; Phase III constant current charge electric current is 0.2C, and the cut-ff voltage of charging is 3.8V.The charging voltage in constant voltage charge stage is 3.8V, and cut-off current is 0.01C.All the other steps are identical with embodiment one.
Claims (8)
1. the chemical synthesizing method of a lithium ion secondary rechargeable battery is characterized in that: adopting remains silent changes into, and divides three phases that battery is carried out constant current charge earlier, again battery is carried out constant voltage charge.
2. the chemical synthesizing method of lithium ion secondary rechargeable battery according to claim 1 is characterized in that: leave the time interval between each charging stage.
3. the chemical synthesizing method of lithium ion secondary rechargeable battery according to claim 2 is characterized in that: three constant current charge stages are adopted different charging currents, and charging current increases progressively successively.
4. the chemical synthesizing method of lithium ion secondary rechargeable battery according to claim 3 is characterized in that: phase I constant current charge electric current is 0.01～0.05C, and the cut-ff voltage of charging is 2.0～2.5V; Second stage constant current charge electric current is 0.1～0.15C, and the cut-ff voltage of charging is 3.0～3.2V; Phase III constant current charge electric current is 0.2C, and the cut-ff voltage of charging is 3.6～3.8V.
5. the chemical synthesizing method of lithium ion secondary rechargeable battery according to claim 4 is characterized in that: the charging voltage in constant voltage charge stage is 3.6～3.8V, and cut-off current is 0.01C.
6. the chemical synthesizing method of lithium ion secondary rechargeable battery according to claim 5 is characterized in that: the time interval between each charging stage is 5～15 minutes, and a back blanking time is greater than last blanking time.
7. the chemical synthesizing method of lithium ion secondary rechargeable battery according to claim 6 is characterized in that: the temperature that changes into of remaining silent is 35～80 ℃.
8. the chemical synthesizing method of lithium ion secondary rechargeable battery according to claim 7 is characterized in that: all needs before and after changing into battery is carried out ageing, and 35～80 ℃ of ageing temperature, digestion time is 48～72 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010191863A CN101872879A (en) | 2010-06-01 | 2010-06-01 | Chemical combination method of lithium-ion recharging battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010191863A CN101872879A (en) | 2010-06-01 | 2010-06-01 | Chemical combination method of lithium-ion recharging battery |
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| CN101872879A true CN101872879A (en) | 2010-10-27 |
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Family Applications (1)
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| CN201010191863A Pending CN101872879A (en) | 2010-06-01 | 2010-06-01 | Chemical combination method of lithium-ion recharging battery |
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Cited By (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950815A (en) * | 2010-08-23 | 2011-01-19 | 八叶(厦门)新能源科技有限公司 | Method for forming cylindrical lithium-ion secondary battery |
| CN102324572A (en) * | 2011-09-27 | 2012-01-18 | 奇瑞汽车股份有限公司 | Formation method for power lithium ion battery |
| CN102760908A (en) * | 2012-07-16 | 2012-10-31 | 宁波世捷新能源科技有限公司 | Quick formation method for lithium ion battery adapting to various cathode material systems |
| CN102891341A (en) * | 2011-07-21 | 2013-01-23 | 湖北骆驼特种电源有限公司 | Lithium iron phosphate battery formation and aging method |
| CN103151565A (en) * | 2013-03-20 | 2013-06-12 | 东莞市力嘉电池有限公司 | First-time charging forming method for lithium-ion secondary battery |
| CN103326069A (en) * | 2012-03-20 | 2013-09-25 | 北汽福田汽车股份有限公司 | Method for forming lithium manganese power cells |
| CN103762379A (en) * | 2014-01-28 | 2014-04-30 | 泉州劲鑫电子有限公司 | High-capacity lithium ion battery and production process thereof |
| CN103887564A (en) * | 2012-12-20 | 2014-06-25 | 北汽福田汽车股份有限公司 | Method for activating injection liquid in power battery |
| CN104157920A (en) * | 2014-08-29 | 2014-11-19 | 合肥国轩高科动力能源股份公司 | High-energy density lithium ion battery formation method |
| CN104577202A (en) * | 2013-10-17 | 2015-04-29 | 奇瑞汽车股份有限公司 | Formation method and preparation method of high-voltage lithium ion battery as well as battery |
| CN104900930A (en) * | 2015-05-27 | 2015-09-09 | 哈尔滨工业大学 | Method of efficient formation of lithium ion battery |
| CN105489943A (en) * | 2015-11-25 | 2016-04-13 | 百顺松涛（天津）动力电池科技发展有限公司 | Lithium-ion battery formation method |
| CN105609889A (en) * | 2015-12-17 | 2016-05-25 | 中天储能科技有限公司 | Rapid formation and grading method for cylindrical lithium battery |
| CN106129506A (en) * | 2016-08-12 | 2016-11-16 | 合肥国轩高科动力能源有限公司 | A kind of compound method for lithium ion battery |
| CN106450429A (en) * | 2016-10-19 | 2017-02-22 | 江苏海四达电源股份有限公司 | High-cycle high-specific energy lithium ion power battery and preparation method thereof |
| CN104810565B (en) * | 2014-06-13 | 2017-05-17 | 万向一二三股份公司 | Lithium ion battery charging and discharging method |
| CN107251311A (en) * | 2015-02-16 | 2017-10-13 | 日产自动车株式会社 | The manufacture method and lithium rechargeable battery of lithium rechargeable battery |
| CN107836054A (en) * | 2015-07-06 | 2018-03-23 | 宝马股份公司 | The quick chemical conversion of electrode |
| CN107851782A (en) * | 2015-07-06 | 2018-03-27 | 宝马股份公司 | The chemical conversion of electrode |
| CN108023130A (en) * | 2017-12-13 | 2018-05-11 | 中国科学技术大学 | A kind of lithium ion battery charging optimization method |
| CN108054436A (en) * | 2017-12-13 | 2018-05-18 | 桑顿新能源科技有限公司 | Improve chemical conversion and the verification method of ferric phosphate lithium cell cycle performance |
| CN109478696A (en) * | 2017-02-22 | 2019-03-15 | 丰田自动车欧洲公司 | Lithium ion battery forming process |
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| CN111653842A (en) * | 2020-03-20 | 2020-09-11 | 万向一二三股份公司 | Low-self-discharge-rate lithium ion battery formation method and ternary soft-package lithium ion battery |
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| CN109478696A (en) * | 2017-02-22 | 2019-03-15 | 丰田自动车欧洲公司 | Lithium ion battery forming process |
| CN108023130A (en) * | 2017-12-13 | 2018-05-11 | 中国科学技术大学 | A kind of lithium ion battery charging optimization method |
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