CN108767319A - A kind of compound method for lithium ion battery - Google Patents
A kind of compound method for lithium ion battery Download PDFInfo
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- CN108767319A CN108767319A CN201810365991.1A CN201810365991A CN108767319A CN 108767319 A CN108767319 A CN 108767319A CN 201810365991 A CN201810365991 A CN 201810365991A CN 108767319 A CN108767319 A CN 108767319A
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- lithium ion
- ion battery
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- chemical conversion
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
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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 kind of compound method for lithium ion battery, include the following steps：It will be stood after lithium ion battery liquid injection, be melted into, vacuumize, then carry out burin-in process.A kind of compound method for lithium ion battery proposed by the present invention, cycle performance is low with battery bulging after effectively solving the problems, such as lithium ion battery chemical conversion.
Description
Technical field
The present invention relates to technical field of lithium ion more particularly to a kind of compound method for lithium ion battery.
Background technology
Lithium ion battery is incorporated in 3C extensively due to having many characteristics, such as that energy density is high, voltage platform is high, service life is grown
The fields such as digital product, energy storage device and electronic new-energy automobile have the great market demand.Chemical conversion is lithium ion battery system
Make a procedure particularly important in technique, for lithium ion battery during initial charge, negative terminal surface will produce one when chemical conversion
Layer solid electrolyte membrane (SEI films), SEI films formed compactness extent will have a direct impact on the electrical property of battery, security performance with
And cycle performance.Negative pressure is begun to use to be melted into mostly in lithium ion battery industrial processes at present, since negative pressure causes to be electrolysed
Liquid is drawn into negative-pressure pipeline, and long-time service vacuum effect is bad, and battery producing gas is unsmooth to cause later stage lithium ion mobility to be obstructed, cycle
Reduced performance and battery bulging seriously affect battery use.
Invention content
Technical problems based on background technology, the present invention propose a kind of compound method for lithium ion battery, effectively solve
The problem of certainly cycle performance is low and battery bulging after lithium ion battery chemical conversion.
A kind of compound method for lithium ion battery proposed by the present invention, includes the following steps：It will be quiet after lithium ion battery liquid injection
It sets, is melted into, vacuumizes, then carry out burin-in process.
Preferably, it will be stood after lithium ion battery liquid injection, be then charged into chemical conversion disk, go to formation cabinet and be melted into.
Preferably, chemical conversion concrete technology is as follows：Under 25~55 DEG C of temperature conditions, the lithium ion battery that will be stood after fluid injection
50%~100%SOC electricity is charged to using 0.01~0.5C segmenteds.
Preferably, chemical conversion concrete technology is as follows：Under 30~45 DEG C of temperature conditions, the lithium ion battery that will be stood after fluid injection
0.01~0.03C charging 2h are first used, then use 0.04~0.1C, 1~3h of charging, then charge to using 0.15~0.3C
50%~70%SOC electricity.
Preferably, it is as follows to vacuumize concrete technology：Lithium ion battery after chemical conversion is segmented under the conditions of -80~-20KPa
Formula vacuumizes 2~4h, and the residual gas in battery is discharged, is then charged with nitrogen.
Preferably, the lithium ion battery after chemical conversion is first vacuumized into 0.4~0.6h of pressurize under the conditions of -30~-20KPa,
Then 0.5~1h of pressurize is vacuumized under the conditions of -50~-40KPa, then vacuumize under the conditions of -80~-60KPa pressurize 1~
2h。
Preferably, burin-in process temperature is 40~60 DEG C, and ageing treatment time is 12~48h.
Large current charge is conducive to reduce polarization after the present invention uses segmented elder generation low current, is conducive to the generation of SEI films,
Then vacuumizing the while of being conducive to drain chemical conversion aerogenesis using segmented vacuum box also avoids electrolyte extraction loss, then uses
High temperature ageing is conducive to the air flue for repairing SEI films and chemical conversion generates, and improves the cycle performance of later stage battery, and reduces battery thickness
Spend and improve battery bulging.
Description of the drawings
Fig. 1 is corresponding lithium ion battery cyclic curve in the embodiment of the present invention 2, embodiment 3 and comparative example 1, comparative example 2
Figure.
Specific implementation mode
In the following, technical scheme of the present invention is described in detail by specific embodiment.
Embodiment 1
A kind of compound method for lithium ion battery proposed by the present invention, includes the following steps：It will be quiet after lithium ion battery liquid injection
It sets, is melted into, vacuumizes, then carry out burin-in process.
Embodiment 2
A kind of compound method for lithium ion battery proposed by the present invention, includes the following steps：It will be quiet after lithium ion battery liquid injection
It sets；At a temperature of 45 DEG C of chemical conversion, the lithium ion battery stood after fluid injection is first used to 0.02C charging 2h, then uses 0.05C
Charge 3h, then charges to 60%SOC electricity using 0.2C, and the lithium ion battery after chemical conversion is first vacuumized under the conditions of -20KPa
Then pressurize 0.5h vacuumizes pressurize 0.5h under the conditions of -40KPa, then pressurize 2h is vacuumized under the conditions of -60KPa, then exists
Aging is for 24 hours under 45 DEG C of temperature conditions.
Embodiment 3
A kind of compound method for lithium ion battery proposed by the present invention, includes the following steps：It will be quiet after lithium ion battery liquid injection
It sets；At a temperature of 45 DEG C of chemical conversion, the lithium ion battery stood after fluid injection is first used to 0.02C charging 2h, then uses 0.1C
Charge 1.5h, then charges to 70%SOC electricity using 0.3C；Lithium ion battery after chemical conversion is first taken out under the conditions of -20KPa true
Empty pressurize 0.5h, then vacuumizes pressurize 1h under the conditions of -40KPa, then pressurize 1h is vacuumized under the conditions of -60KPa, then exists
Aging is for 24 hours under 45 DEG C of temperature conditions.
Embodiment 4
A kind of compound method for lithium ion battery proposed by the present invention, includes the following steps：It will be quiet after lithium ion battery liquid injection
It sets；At a temperature of 25 DEG C of chemical conversion, the lithium ion battery stood after fluid injection is first used to 0.01C charging 2h, then uses 0.04C
Charge 3h, then charges to 50%SOC electricity using 0.15C；Lithium ion battery after chemical conversion is first taken out under the conditions of -30KPa true
Empty pressurize 0.4h, then vacuumizes pressurize 0.8h under the conditions of -50KPa, then pressurize 1.5h is vacuumized under the conditions of -70KPa, so
The aging 48h under 40 DEG C of temperature conditions afterwards.
Embodiment 5
A kind of compound method for lithium ion battery proposed by the present invention, includes the following steps：It will be quiet after lithium ion battery liquid injection
It sets, at a temperature of 55 DEG C of chemical conversion, the lithium ion battery stood after fluid injection is first used to 0.03C charging 2h, then uses 0.08C
Charge 1h, then charges to 65%SOC electricity using 0.25C；Lithium ion battery after chemical conversion is first taken out under the conditions of -25KPa true
Empty pressurize 0.6h, then vacuumizes pressurize 1h under the conditions of -45KPa, then pressurize 1.2h is vacuumized under the conditions of -70KPa, then
The aging 12h under 60 DEG C of temperature conditions.
Comparative example 1
It will be stood after lithium ion battery liquid injection, at a temperature of 45 DEG C of chemical conversion, first use 0.02C charging 2h, then use
0.10C charging 1.5h, then 70%SOC electricity is charged to using 0.3C.
Comparative example 2
It will be stood after lithium ion battery liquid injection, at a temperature of 45 DEG C of chemical conversion, first use 0.02C charging 2h, then use
0.10C charging 1.5h, then 70%SOC electricity is charged to using 0.3C, by the lithium ion battery after chemical conversion in 45 DEG C of temperature conditions
Lower aging is for 24 hours.
Table 1 is negative plate circle obtained with the method in comparative example 1, comparative example 2 using the embodiment of the present invention 2, embodiment 3
Face situation and finished battery thickness table.
| Negative plate interface conditions | Finished battery thickness range/mm | |
| Embodiment 2 | No air flue, without analysis lithium | 26.5~26.8 |
| Embodiment 3 | No air flue, without analysis lithium | 26.6~27.1 |
| Comparative example 1 | Air flue is more, has analysis lithium | 27.0~27.7 |
| Comparative example 2 | Air flue is less, has analysis lithium | 26.9~27.5 |
As shown in table 1, embodiment 2 and embodiment 3 carry out vacuumizing discharge battery during initial charge after charging
Aerogenesis improves the migration rate of battery lithium ion in later stage charge and discharge process, also avoids battery bulging, carries out 45 DEG C later
High temperature ageing is conducive to the reparation of SEI films and air flue, improves cell interface, is conducive to later cycles performance.Comparative example 1 is filled for the first time
Vacuumizing and exhausting and aging are not carried out after electricity, causes negative plate interface air flue more, there are analysis lithiums, and finished battery occurs obviously
Bulging；Vacuumizing and exhausting is not carried out after 2 initial charge of comparative example, has carried out high temperature ageing, and negative plate interface air flue is relatively fewer
But still having analysis lithium, also there is apparent bulging in finished battery.
Fig. 1 is corresponding lithium ion battery cyclic curve in the embodiment of the present invention 2, embodiment 3 and comparative example 1, comparative example 2
Figure, from figure 1 it appears that segmented vacuum box is taken to vacuumize and take high temperature ageing to be conducive to improve later stage battery
Cycle performance, wherein it is more excellent with the later stage cycle performance of battery of high temperature ageing to take segmented vacuum box to vacuumize simultaneously.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (7)
1. a kind of compound method for lithium ion battery, which is characterized in that include the following steps：It will be stood after lithium ion battery liquid injection,
Chemical conversion, vacuumizes, then carries out burin-in process.
2. compound method for lithium ion battery according to claim 1, which is characterized in that it will be stood after lithium ion battery liquid injection,
It is then charged into chemical conversion disk, goes to formation cabinet and be melted into.
3. compound method for lithium ion battery according to claim 1 or claim 2, which is characterized in that chemical conversion concrete technology is as follows：25
Under~55 DEG C of temperature conditions, the lithium ion battery stood after fluid injection is charged to 50% using 0.01~0.5C segmenteds~
100%SOC electricity.
4. according to any one of the claim 1-3 compound method for lithium ion battery, which is characterized in that chemical conversion concrete technology is such as
Under：Under 30~45 DEG C of temperature conditions, the lithium ion battery stood after fluid injection is first used to 0.01~0.03C charging 2h, then
50%~70%SOC electricity is charged to using 0.04~0.1C, 1~3h of charging, then using 0.15~0.3C.
5. according to any one of the claim 1-4 compound method for lithium ion battery, which is characterized in that vacuumize concrete technology
It is as follows：By the lithium ion battery after chemical conversion, segmented vacuumizes 2~4h under the conditions of -80~-20KPa, is discharged residual in battery
Residual air body, is then charged with nitrogen.
6. according to any one of the claim 1-5 compound method for lithium ion battery, which is characterized in that by the lithium after chemical conversion from
Sub- battery first vacuumizes 0.4~0.6h of pressurize under the conditions of -30~-20KPa, is then vacuumized under the conditions of -50~-40KPa
0.5~1h of pressurize, then 1~2h of pressurize is vacuumized under the conditions of -80~-60KPa.
7. according to any one of the claim 1-8 compound method for lithium ion battery, which is characterized in that burin-in process temperature is
40~60 DEG C, ageing treatment time is 12~48h.
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| CN201810365991.1A CN108767319A (en) | 2018-04-23 | 2018-04-23 | A kind of compound method for lithium ion battery |
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| CN201810365991.1A CN108767319A (en) | 2018-04-23 | 2018-04-23 | A kind of compound method for lithium ion battery |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109802089A (en) * | 2018-12-24 | 2019-05-24 | 中国电子科技集团公司第十八研究所 | Liquid injection and formation method for ultra-large-capacity single battery |
| CN111129434A (en) * | 2019-12-16 | 2020-05-08 | 合肥国轩高科动力能源有限公司 | Lithium titanate battery cell for inhibiting flatulence and preparation method thereof |
| CN111554978A (en) * | 2020-03-20 | 2020-08-18 | 浙江南都电源动力股份有限公司 | Segmented negative pressure formation method of lithium ion battery |
| CN111934018A (en) * | 2020-06-29 | 2020-11-13 | 宁波新思创机电科技股份有限公司 | Manufacturing method of power lithium titanate battery |
| CN112652830A (en) * | 2020-12-30 | 2021-04-13 | 骆驼集团武汉新能源科技有限公司 | Exhaust method for improving interface of aluminum shell lithium ion battery pole piece |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522595A (en) * | 2011-12-31 | 2012-06-27 | 董相盛 | Flexible thin film lithium ion battery and manufacturing method thereof |
| CN103367813A (en) * | 2013-07-23 | 2013-10-23 | 惠州市泰格威电池有限公司 | Formation processing method of lithium manganate battery |
| CN105811032A (en) * | 2016-03-22 | 2016-07-27 | 南京国轩电池有限公司 | Formation method of aluminum-shell lithium ion battery |
| CN107681104A (en) * | 2017-08-23 | 2018-02-09 | 安徽省力霸动力锂电池科技有限公司 | A kind of liquid injection process of polymer soft bag lithium ionic cell |
-
2018
- 2018-04-23 CN CN201810365991.1A patent/CN108767319A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522595A (en) * | 2011-12-31 | 2012-06-27 | 董相盛 | Flexible thin film lithium ion battery and manufacturing method thereof |
| CN103367813A (en) * | 2013-07-23 | 2013-10-23 | 惠州市泰格威电池有限公司 | Formation processing method of lithium manganate battery |
| CN105811032A (en) * | 2016-03-22 | 2016-07-27 | 南京国轩电池有限公司 | Formation method of aluminum-shell lithium ion battery |
| CN107681104A (en) * | 2017-08-23 | 2018-02-09 | 安徽省力霸动力锂电池科技有限公司 | A kind of liquid injection process of polymer soft bag lithium ionic cell |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109802089A (en) * | 2018-12-24 | 2019-05-24 | 中国电子科技集团公司第十八研究所 | Liquid injection and formation method for ultra-large-capacity single battery |
| CN109802089B (en) * | 2018-12-24 | 2022-07-26 | 中国电子科技集团公司第十八研究所 | Liquid injection and formation method for ultra-large-capacity single battery |
| CN111129434A (en) * | 2019-12-16 | 2020-05-08 | 合肥国轩高科动力能源有限公司 | Lithium titanate battery cell for inhibiting flatulence and preparation method thereof |
| CN111554978A (en) * | 2020-03-20 | 2020-08-18 | 浙江南都电源动力股份有限公司 | Segmented negative pressure formation method of lithium ion battery |
| CN111934018A (en) * | 2020-06-29 | 2020-11-13 | 宁波新思创机电科技股份有限公司 | Manufacturing method of power lithium titanate battery |
| CN111934018B (en) * | 2020-06-29 | 2024-03-01 | 宁波新思创机电科技股份有限公司 | Manufacturing method of power lithium titanate battery |
| CN112652830A (en) * | 2020-12-30 | 2021-04-13 | 骆驼集团武汉新能源科技有限公司 | Exhaust method for improving interface of aluminum shell lithium ion battery pole piece |
| CN112652830B (en) * | 2020-12-30 | 2022-09-13 | 骆驼集团新能源电池有限公司 | Exhaust method for improving interface of aluminum shell lithium ion battery pole piece |
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