CN101207224A - Method for preparation of lithium ion battery - Google Patents
Method for preparation of lithium ion battery Download PDFInfo
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- CN101207224A CN101207224A CNA2006101706065A CN200610170606A CN101207224A CN 101207224 A CN101207224 A CN 101207224A CN A2006101706065 A CNA2006101706065 A CN A2006101706065A CN 200610170606 A CN200610170606 A CN 200610170606A CN 101207224 A CN101207224 A CN 101207224A
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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 relates to a preparation method of a lithium ion battery, which comprises the steps that a polar core is arranged in the casing body of a battery after being formed by a positive pole, a negative pole and a diaphragm, and then injected into the electrolytic solution to form a semi-finished lithium ion battery, after the semi-finished lithium ion battery is formed and exhausted, the liquid-injection port of the casing body of the battery is sealed; wherein, the method also comprises the steps that the formed semi-finished lithium ion battery is arranged before the exhaustion. According to the method provided by the invention, the gas generated inside the battery can be adequately absorbed and exhausted through putting the semi-finished lithium ion battery for a time interval between the formation and the exhaustion process of the semi-finished lithium ion battery, therefore, the leakage phenomenon of a considerable amount of gas and the electrolytic solution generated during the exhausting process can be effectively avoided, to ensure that the actual injection amount of the electrolytic solution of the battery is increased; thereby, the capacitance and the cycle performance of the battery is enhanced.
Description
Technical field
The invention relates to a kind of preparation method of lithium ion battery.
Background technology
Lithium ion battery is because of having energy density height, non-environmental-pollution being applied in the various electronic products more and more widely.Lithium ion battery generally comprises pole piece, electrolyte and battery container, and described pole piece and electrolyte are sealed in the battery container, and described pole piece comprises positive pole, negative pole and the barrier film between positive pole and negative pole.Described electrolyte is part important in the lithium ion battery, and the effect of ionic conduction is provided between battery plus-negative plate.Electrolyte generally is made up of organic solvent, lithium salts and additive, and the consumption of electrolyte is related to battery capacity and cycle life, and insufficient electrolyte can cause battery capacity to descend and cycle life decays rapidly.Because lithium ion battery constantly develops to the direction that reduces volume, energization density, the space that is used to hold electrolyte in the battery is very limited.So the splendid attire electrolyte as much as possible of must in limited space, trying one's best, to improve battery capacity and cycle life as far as possible.
In the prior art, the preparation method of lithium ion battery generally includes positive pole, negative pole and barrier film formation pole piece is placed in the battery container, inject electrolyte then, obtain the semi-finished product lithium ion battery, immediately with the liquid injection port sealing of battery container, obtain the finished product battery after the semi-finished product lithium ion battery changed into.For example, CN 1697238A discloses a kind of method for preparing lithium battery, this method comprises successively with each composition that contains active material and adhesive and applies positive electrode collector respectively and negative electrode collector prepares positive plate and negative plate, positive plate, negative plate are placed the both sides of dividing plate, form battery unit with reservation shape; This battery unit is inserted in the battery case; Resulting structures was stored under 35-90 ℃ high temperature 5 minutes to 4 hours; To the gas that produces in the resulting structures processing that outgases; Resulting structures is carried out room temperature change into processing.Changing into is to charge by the semi-finished product lithium ion battery to gained 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.Change into the quality that has directly determined battery performance.The method that changes into is generally constant current at normal temperatures or constant current constant voltage carries out trickle charge to the semi-finished product lithium ion battery.Because the various reactions of inside battery cause battery to produce a large amount of gas in the charging process, in addition, in formation process, flow out for preventing that moisture enters with electrolyte in the charging process, the liquid injection port in the battery container is generally carried out temporary sealing with gummed paper and rubber ring.Owing in formation process, can produce a large amount of gases in the battery, these gases are stayed in the battery because of the sealing of liquid injection port, make inner pressure of battery higher relatively, therefore generally will be before changing into back sealing liquid injection port to the battery processing that outgases, to discharge the gas of in formation process, staying in the battery, reduce inner pressure of battery, thereby reach the problem that suppresses cell expansion, anti-battery is at high temperature or acutely rock under the condition and blast.The described degassing is handled the general mode of extruding battery container that adopts and is carried out.Yet under above-mentioned extrusion process, when discharging gas, a large amount of electrolyte are also along with gas is taken out of battery, thereby greatly reduce the actual injection rate of battery electrolyte inside, cause battery capacity low and cycle life is short thus.
Summary of the invention
In the battery that the objective of the invention is to make for the method for preparing lithium ion battery that overcomes prior art the actual injection rate of electrolyte little, cause the short shortcoming of the low and cycle life of battery capacity, thereby a kind of method for preparing lithium ion battery that can make the actual injection rate of electrolyte big raising battery capacity and cycle life in the battery is provided.
The preparation method of lithium ion battery provided by the invention comprises that positive pole, negative pole and barrier film are formed pole piece to be placed in the battery container, inject electrolyte then, obtain the semi-finished product lithium ion battery, with the semi-finished product lithium ion battery change into, after the exhaust with the liquid injection port sealing of battery container, wherein, before this method also is included in exhaust, the semi-finished product lithium ion battery after changing into is placed.
According to method provided by the invention, by the semi-finished product lithium ion battery is changed into and exhaust between the semi-finished product lithium ion battery is placed a time interval, the gas that makes inside battery produce can fully absorb or discharge, thereby a large amount of gases that can effectively avoid producing in exhaust process are carried the phenomenon that electrolyte spills secretly, the actual injection rate of electrolyte of battery is improved, thereby improves the capacity and the cycle performance of battery.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, a kind of preferred implementation according to method of the present invention, the electronics that also helps the high potential on battery pole piece surface by the time interval that all is provided with 20-180 minute between per two charging stages that change into 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, thus further improved the cycle performance of battery.
Description of drawings
The comparison diagram of the actual injection rate of battery electrolyte inside that Fig. 1 makes for embodiment 1-4 and comparative example 1;
The comparison diagram of electrolyte leaking liquid amount during battery extruding sealing that Fig. 2 makes for embodiment 1-4 and comparative example 1;
Thickness comparison diagram behind the battery seal that Fig. 3 makes for embodiment 1-4 and comparative example 1.
Embodiment
According to method provided by the invention, wherein, described is with time interval of the uncovered placement of the semi-finished product lithium ion battery after changing into semi-finished product lithium ion battery time interval of placement.In put procedure, battery is not charged, help producing in the formation process absorption or the discharge of gas.For the gas that produces in the formation process can fully be absorbed, the time of described placement can be 10-40 hour, is preferably 20-30 hour.In order to reduce the adverse effect of outer bound pair battery performance, described placement is preferably carried out in the lower environment of relative humidity.Described relative humidity preferably is no more than 1%, and for example relative humidity is 0.1-1%.In order to prevent that electrolyte from side reactions such as decomposition at high temperature taking place, the temperature of the environment of described placement is preferably 5-30 ℃, more preferably 20-25 ℃.
The present invention changes into to described that there is no particular limitation with the concrete operations of exhaust and condition, can be conventional the changing into and method for exhausting of using in lithium ion battery field.For example, the described method that the semi-finished product lithium ion battery is changed into comprises that the constant current with 0.005-3C charges to the semi-finished product lithium ion battery.Described charging can comprise 2-10 charging stage, in order to shorten the time of changing into, is preferably 3-5 stage; The charging interval of each charging stage can be 0.5-10 hour, is preferably 1-6 hour.Described a plurality of charging stage can be carried out continuously or is interrupted and carry out.In order to prevent to cause the electrolyte phenomenon of leakage in formation process, the present invention preferably all is provided with 20-180 minute the time interval between per two charging stages, preferred 30-60 minute the time interval.In each charging stage, battery all charges with constant current, the electric current that the size of described electric current changes into for conventional lithium ion battery, as 0.001-5C, in order to shorten the time of changing into, can adopt the electric current about 5C to charge, but, in order to guarantee that lithium ion battery can have good performance after changing into, the little electric current of preferred employing charges to battery, the present inventor finds that when adopting 0.005-3C, more preferably the little electric current of 0.01-1C charges to battery and can further improve the cycle performance of battery.In the charging process of entire cell, the charging current of a plurality of charging stages can be the same or different, for the active material of activated batteries to greatest extent, give full play to battery performance, under the preferable case, the charging current difference of a plurality of charging stages, the rule that changes is not particularly limited, in order to improve charge efficiency, shorten the charging interval, under the preferable case, the charging current of a plurality of charging stages is for increasing progressively gradually, promptly the charging current of one charging stage of back is higher than the charging current of last charging stage, and the difference of the two can be 0.01-1C, is preferably 0.01-0.5C.
Since the present invention only relate to the semi-finished product lithium ion battery is changed into and exhaust between the semi-finished product lithium ion battery is placed the improvement in a time interval, other step of preparation battery is for example prepared anode, negative pole and anodal, negative pole and barrier film formed pole piece and the semi-finished product lithium ion battery is carried out the condition of exhaust and sealing and method there is no particular limitation, can adopt the method for well known to a person skilled in the art to carry out.
There is no particular limitation to the The Nomenclature Composition and Structure of Complexes of described lithium rechargeable battery in the present invention, for The Nomenclature Composition and Structure of Complexes well known in the art gets final product.Method provided by the invention goes for the lithium rechargeable battery of various different The Nomenclature Composition and Structure of Complexes.
The following examples will the present invention is further illustrated.
This embodiment is used to illustrate the preparation method of lithium ion battery provided by the invention.
Prepare 25 identical LP053450ARK type semi-finished product lithium ion batteries according to following method:
With 100 weight portion LiCoO
2, 2.0 weight portion adhesive PVDF, 4.5 weight portion conductive agent acetylene blacks join in 70 weight portions (NMP), in de-airing mixer, stir then and form uniform anode sizing agent.With this slurry equably single face be coated on wide 400 millimeters, the thick 0.016 millimeter aluminium foil, on cutting machine, cut the anode pole piece that obtains being of a size of millimeter (wide) * 0.145,140.0 millimeters (length) * 50.0 millimeter (thick) after 120 ℃ of oven dry then, the roll-ins.
100 weight portion negative electrode active material native graphites, 1.0 weight portion adhesive polyvinylidene fluoride (PVDF) and 1.0 weight portion conductive agent carbon blacks are joined in the 120 weight portion N-methyl pyrrolidones (NMP), in de-airing mixer, stir then and form cathode size stable, homogeneous.With this slurry equably single face be coated on wide 400 millimeters, the thick 0.018 millimeter Copper Foil, after 120 ℃ of oven dry, rolling, on cutting machine, cut the cathode pole piece that obtains being of a size of millimeter (wide) * 0.145,140.0 millimeters (length) * 45.0 millimeter (thick).
Above-mentioned positive and negative electrode pole piece and polypropylene screen are wound into the pole piece of a square lithium ion battery, lug and electrode slice point postwelding are put into battery container, after battery case and cover plate laser welded seal, LiPF
6Concentration by 1 mol is dissolved in EC/DMC=1: form nonaqueous electrolytic solution in the mixed solvent of 1 (volume ratio), this electrolyte is injected the LP053450ARK type battery container of an end opening with the amount of 3.8 gram/ampere-hours, in 45 ℃ hot environment, place and carried out ageing in 24 hours, to reach the purpose that electrolyte fully soaks into electrode active material in the electric core, so that the SEI film that forms in the formation process is more even, fine and close.Subsequently, prepare to change into.
With gummed paper liquid injection hole is sealed, under 25 ℃, earlier with the current charges of 0.01C 8 hours, stop charging then, shelved 30 minutes, the electric current with 0.02C continues charging 5 hours again, stop charging then, shelved 40 minutes, and continued current charges with 0.1C again after 6 hours, finish battery and change into and seal liquid injection hole.Semi-finished product lithium ion battery A1-A25 after obtaining changing into writes down the weight of each battery, the injection rate of electrolyte and the thickness of battery respectively.
Is 20 ℃ with 25 above-mentioned semi-finished product lithium ion battery A1-A25 that make in temperature, relative humidity is to place after 24 hours in 0.1% the hothouse to push exhaust, inlet with electrolyte seals then, obtain lithium ion battery AA1-AA25, the gained lithium ion battery is weighed, by battery weight after battery method of double differences value and the fluid injection before battery weight after the fluid injection and the fluid injection with seal (sealing inlet) back battery weight difference and calculate the actual injection rate and the leaking liquid amount of electrolyte, measure the thickness of above-mentioned lithium ion battery simultaneously at the central point of battery, the result as Figure 1-3.
This embodiment is used to illustrate the preparation method of lithium ion battery provided by the invention.
25 identical LP053450ARK type semi-finished product lithium ion batteries of method preparation according to the foregoing description 1, numbering is respectively A26-A50, be 20 ℃ with these semi-finished product lithium ion batteries A26-A50 in temperature then, relative humidity is that 0.1% hothouse is placed after 14 hours and pushed exhaust, inlet with electrolyte seals then, obtain lithium ion battery AA26-AA50, the gained lithium ion battery is weighed, by battery weight after battery method of double differences value and the fluid injection before battery weight after the fluid injection and the fluid injection with seal (sealing inlet) back battery weight difference and calculate the actual injection rate and the leaking liquid amount of electrolyte, measure simultaneously the thickness of above-mentioned lithium ion battery at the central point of battery, the result as Figure 1-3 shown in.
This embodiment is used to illustrate the preparation method of lithium ion battery provided by the invention.
25 identical LP053450ARK type semi-finished product lithium ion batteries of method preparation according to the foregoing description 1, numbering is respectively A51-A75, A51-A75 is 10 ℃ in temperature with these semi-finished product lithium ion batteries, relative humidity is that 0.1% hothouse is placed after 30 hours and pushed exhaust, inlet with electrolyte seals then, obtain lithium ion battery AA51-AA75, the gained lithium ion battery is weighed, by battery weight after battery method of double differences value and the fluid injection before battery weight after the fluid injection and the fluid injection with seal (sealing inlet) back battery weight difference and calculate the actual injection rate and the leaking liquid amount of electrolyte, measure simultaneously the thickness of above-mentioned lithium ion battery at the central point of battery, the result as Figure 1-3 shown in.
Comparative example 1
This Comparative Examples is used to illustrate the preparation method of existing lithium ion battery.
25 identical LP053450ARK type semi-finished product lithium ion batteries of method preparation according to the foregoing description 1, numbering is respectively A76-A100, A76-A100 directly pushes exhaust after changing into these semi-finished product lithium ion batteries, inlet with electrolyte seals then, obtain reference lithium ion battery AA76-AA100, the gained lithium ion battery is weighed, by battery weight after battery method of double differences value and the fluid injection before battery weight after the fluid injection and the fluid injection with seal (sealing inlet) back battery weight difference and calculate the actual injection rate and the leaking liquid amount of electrolyte, measure simultaneously the thickness of above-mentioned lithium ion battery at the central point of battery, the result as Figure 1-3 shown in.
This embodiment is used to illustrate the preparation method of lithium ion battery provided by the invention.
25 identical LP053450ARK type semi-finished product lithium ion batteries of method preparation according to the foregoing description 1, different is, after with gummed paper liquid injection hole being sealed, under 25 ℃, earlier with the current charges of 0.05C 4 hours, again with the current charges of 0.1C 6 hours, stop charging then, finish battery and change into and seal liquid injection hole, the semi-finished product lithium ion battery A101-A125 after obtaining changing into writes down the weight of each battery, the injection rate of electrolyte and the thickness of battery respectively.Is that 10 ℃, relative humidity are to push exhaust after 0.1% hothouse is placed 30 hours with these semi-finished product lithium ion batteries A101-A125 in temperature, with the inlet sealing of electrolyte, obtains lithium ion battery AA101-AA125 then.The gained lithium ion battery is weighed, by battery weight after battery method of double differences value and the fluid injection before battery weight after the fluid injection and the fluid injection with seal (sealing inlet) back battery weight difference and calculate the actual injection rate and the leaking liquid amount of electrolyte, measure the thickness of above-mentioned lithium ion battery simultaneously at the central point of battery, the result as Figure 1-3.
Embodiment 5-8
The battery capacity and the cycle performance of the lithium ion battery that following embodiment is used to illustrate that the present invention prepares.
From above-mentioned lithium ion battery AA1-AA75 and AA101-AA120, take out lithium ion battery AA22, AA45, AA85 and AA122 respectively and carry out battery capacity and cycle performance test.Method of testing is as follows: at ambient temperature, with 800 MAH current charges to 4.2 volt, rise to 4.2 volts of backs with constant-potential charge at voltage, cut-off current is 0.05C, shelves 10 minutes; With 800 MAH current discharges to 3.0 volt, shelved 5 minutes the discharge capacity first of record battery again.Repeat above step 50 time, 100 times, 150 times, 200 times, 250 times, 300 times, 350 times, 400 times, 450 times and 500 times respectively, obtain the capacity after the battery circulation, by capacity sustainment rate before and after the following formula computation cycles:
Capacity sustainment rate=(the n time cyclic discharge capacity/cyclic discharge capacity) first * 100%
The result is as shown in table 1.
Comparative example 2
This Comparative Examples is used to illustrate the battery capacity and the cycle performance of the lithium ion battery of prior art for preparing.
Adopt with embodiment 5-8 in identical method measure, different is, the battery of mensuration is the AA90 among the reference lithium ion battery AA76-AA100 that obtains of the method by comparative example 1, the result is as shown in table 1.
Table 1
| The | Embodiment | 5 | |
Embodiment 7 | Embodiment 8 | Comparative Examples 2 |
| The battery numbering | AA22 | AA45 | AA85 | AA122 | AA90 | |
| Discharge capacity (MAH) first | 821 | 818 | 828 | 816 | 780 | |
| 50 circulation conservation rates (%) | 98.40 | 98.28 | 98.20 | 98.25 | 92.20 | |
| 100 circulation conservation rates (%) | 97.00 | 96.90 | 96.60 | 96.55 | 90.80 | |
| 150 circulation conservation rates (%) | 96.90 | 96.00 | 95.50 | 95.50 | 85.80 | |
| 200 circulation conservation rates (%) | 94.70 | 93.20 | 93.00 | 93.10 | 83.20 | |
| 250 circulation conservation rates (%) | 93.50 | 93.00 | 92.40 | 92.40 | 82.10 | |
| 300 circulation conservation rates (%) | 93.00 | 92.10 | 92.00 | 92.00 | 80.80 | |
| 350 circulation conservation rates (%) | 92.90 | 91.40 | 91.10 | 91.20 | 80.60 | |
| 400 circulation conservation rates (%) | 92.20 | 91.10 | 90.10 | 90.10 | 80.50 | |
| 450 circulation conservation rates (%) | 90.30 | 89.70 | 89.30 | 89.20 | 80.40 | |
| 500 circulation conservation rates (%) | 89.70 | 88.10 | 88.30 | 88.10 | 78.20 |
From the result of table 1 as can be seen, the lithium ion battery that obtains after changing into according to method of the present invention at the capability retention that discharges and recharges battery after 50 times, 100 times, 150 times, 200 times, 250 times, 300 times, 350 times, 400 times, 450 times and 500 times continuously all apparently higher than the capability retention of the lithium ion battery that adopts existing chemical synthesizing method to obtain.
From the data of Fig. 1-3 as can be seen, adopt lithium ion battery method preparation provided by the invention can effectively reduce the leaking liquid amount and the thickness of battery, thereby improve the actual injection rate of electrolyte in the battery.
The The above results explanation, according to the capacity of lithium ion battery height that chemical synthesizing method of the present invention obtains, cycle performance is good.
Claims (9)
1. the preparation method of a lithium ion battery, this method comprises that positive pole, negative pole and barrier film are formed pole piece to be placed in the battery container, inject electrolyte then, obtain the semi-finished product lithium ion battery, with the semi-finished product lithium ion battery change into, after the exhaust with the liquid injection port sealing of battery container, it is characterized in that, before this method also is included in exhaust, the semi-finished product lithium ion battery after changing into is placed.
2. method according to claim 1 wherein, describedly is placed on that relative humidity is no more than 1%, temperature is to carry out in 5-30 ℃ the environment.
3. method according to claim 2, wherein, the described relative humidity that is placed on is that 0.1-1%, temperature are to carry out in 20-25 ℃ the environment.
4. method according to claim 1, wherein, the time of described placement is 10-40 hour.
5. method according to claim 4, wherein, the time of described placement is 20-30 hour.
6. method according to claim 1, wherein, the described method that the semi-finished product lithium ion battery is changed into comprises that the constant current with 0.005-3C charges to the semi-finished product lithium ion battery.
7. method according to claim 6, wherein, described charging comprises 2-10 charging stage, the charging interval of each charging stage is 0.5-10 hour, between per two charging stages all is set 20-180 minute the time interval.
8. method according to claim 7, wherein, described charging process comprises 3-5 charging stage, the charging interval of each charging stage is 1-6 hour, between per two charging stages all is set 30-60 minute the time interval.
9. method according to claim 7, wherein, the charging current difference of a plurality of charging stages, the charging current of one charging stage of back is higher than the charging current of last charging stage, and the difference of the two is 0.01-0.5C.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102315417A (en) * | 2011-09-30 | 2012-01-11 | 湖南大学 | Novel liquid injection and activation process for lithium ion batteries |
| CN103367810A (en) * | 2012-03-29 | 2013-10-23 | 海洋王照明科技股份有限公司 | Preparation method of capacitor battery |
| CN104170154A (en) * | 2012-03-13 | 2014-11-26 | 株式会社东芝 | Battery manufacturing method |
| CN104409790A (en) * | 2014-11-27 | 2015-03-11 | 中航锂电（洛阳）有限公司 | Pre-charge formation method for lithium-ion battery |
| CN105702909A (en) * | 2016-03-31 | 2016-06-22 | 东莞市创明电池技术有限公司 | Liquid injection method for cylindrical battery |
| CN106711507A (en) * | 2015-11-16 | 2017-05-24 | 襄阳博富能电子实业有限公司 | Forming and produced gas removing method of cylindrical steel-shell lithium titanate battery |
| CN110233301A (en) * | 2019-07-14 | 2019-09-13 | 河南电池研究院有限公司 | A kind of preparation method of lithium titanate battery |
| CN111682272A (en) * | 2020-05-07 | 2020-09-18 | 惠州亿纬创能电池有限公司 | Lithium ion battery formation method and lithium ion battery |
| CN113113683A (en) * | 2021-03-12 | 2021-07-13 | 江门市力源电子有限公司 | Formation method of low self-discharge lithium ion battery |
| CN113745665A (en) * | 2021-09-23 | 2021-12-03 | 郑州英诺贝森能源科技有限公司 | Battery formation exhaust method |
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2006
- 2006-12-22 CN CNA2006101706065A patent/CN101207224A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102315417A (en) * | 2011-09-30 | 2012-01-11 | 湖南大学 | Novel liquid injection and activation process for lithium ion batteries |
| CN104170154A (en) * | 2012-03-13 | 2014-11-26 | 株式会社东芝 | Battery manufacturing method |
| CN103367810A (en) * | 2012-03-29 | 2013-10-23 | 海洋王照明科技股份有限公司 | Preparation method of capacitor battery |
| CN104409790A (en) * | 2014-11-27 | 2015-03-11 | 中航锂电（洛阳）有限公司 | Pre-charge formation method for lithium-ion battery |
| CN106711507A (en) * | 2015-11-16 | 2017-05-24 | 襄阳博富能电子实业有限公司 | Forming and produced gas removing method of cylindrical steel-shell lithium titanate battery |
| CN105702909A (en) * | 2016-03-31 | 2016-06-22 | 东莞市创明电池技术有限公司 | Liquid injection method for cylindrical battery |
| CN105702909B (en) * | 2016-03-31 | 2018-11-09 | 东莞市创明电池技术有限公司 | The electrolyte filling method of cylindrical battery |
| CN110233301A (en) * | 2019-07-14 | 2019-09-13 | 河南电池研究院有限公司 | A kind of preparation method of lithium titanate battery |
| CN111682272A (en) * | 2020-05-07 | 2020-09-18 | 惠州亿纬创能电池有限公司 | Lithium ion battery formation method and lithium ion battery |
| CN113113683A (en) * | 2021-03-12 | 2021-07-13 | 江门市力源电子有限公司 | Formation method of low self-discharge lithium ion battery |
| CN113745665A (en) * | 2021-09-23 | 2021-12-03 | 郑州英诺贝森能源科技有限公司 | Battery formation exhaust method |
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