CN109659640A - A kind of quick chemical synthesis technology of lithium ion battery - Google Patents
A kind of quick chemical synthesis technology of lithium ion battery Download PDFInfo
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- CN109659640A CN109659640A CN201811643773.6A CN201811643773A CN109659640A CN 109659640 A CN109659640 A CN 109659640A CN 201811643773 A CN201811643773 A CN 201811643773A CN 109659640 A CN109659640 A CN 109659640A
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- room temperature
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- ion battery
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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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/446—Initial charging measures
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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
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Abstract
The invention discloses a kind of quick chemical synthesis technology of lithium ion battery, which carries out vacuum liquid filling to lithium ion battery, just seals, and one time room temperature is stood, and room temperature chemical conversion, secondary room temperature is stood, high temperature ageing, room temperature cooling, sealing.Lithium ion battery chemical synthesis technology provided by the invention is simple, and low energy consumption, high-efficient, and the chemical conversion time can be reduced to 2.5~3 hours, and utilization rate of equipment and installations is high.
Description
Technical field
The present invention relates to lithium ion battery technologies, and in particular to lithium ion battery forming technology.
Background technique
Lithium ion battery has the features such as high-energy density, high working voltage, long-life, memory-less effect, is transported extensively
For fields such as aerospace, medical treatment, energy storage, 3C, as this year comes, country pushes away for lithium ion battery enlargement application
Into the development of power lithium-ion battery is broken out like the mushrooms after rain, and manufacturing process technology also has huge advance therewith.
Formation process is to pass through inside battery electrolyte and positive and negative anodes active material electrochemistry after lithium ion battery liquid injection
Reaction forms passivation layer in negative terminal surface, which is the excellence conductor with solid electrolyte, referred to as " solid state electrolysis
Plasma membrane (abbreviation SEI film) ", Li+ freely can be embedded in and be deviate from by the passivation layer, be generated to the performance of battery performance
Vital influence.
Formation process is affected as the process for forming SEI film by process flow.In current high capacity, high pressure entity
Under system, the infiltration of electrolyte is more difficult, is easy to form a film in formation process inhomogenous, unstable.Conventional processing methods use
Small multiplying power electric current is slowly formed fine and close SEI film, although this method is desirable, works well, and the chemical conversion time is longer, and equipment accounts for
With rate height, it is unfavorable for speed-raising volume increase.
In this regard, it has been proposed that improved process, is melted into using high temperature, it is intended to enhance the infiltration of electrolyte in formation process, but
This method equipment is expensive, and energy consumption is high, causes waste to a certain extent.Therefore, seek quick, efficient, energy-efficient chemical synthesis technology
It is a kind of inexorable trend.
Publication number: the Chinese invention patent application of CN108110348A discloses a kind of chemical synthesizing method of lithium ion battery,
The program uses high temperature ageing in an aging, and energy consumption is higher, is unfavorable for energy conservation, and it is lower that when chemical conversion finally controls state-of-charge,
And it is time-consuming relatively long, secondary aging claim is excessively wide in range, can not obtain the good electricity in interface completely according to the method
Pond product, and the program and conventional method ratio, battery core self-discharge rate is higher, and film-formation result is general.
Summary of the invention
For the problems of existing lithium ion battery chemical synthesis technology, a kind of new lithium ion battery chemical conversion work is needed
Skill.
For this purpose, the purpose of the present invention is to provide a kind of quick chemical synthesis technology of lithium ion battery, can efficiently (2~3H) and
The chemical conversion of the completion battery of high quality.
In order to achieve the above object, the quick chemical synthesis technology of lithium ion battery provided by the invention, to the battery core after baking according to
Secondary carry out following steps:
Vacuum liquid filling, conventional vacuum fluid injection, preferably infiltrates pole piece for electrolyte；
Just envelope, seals soft pack cell for the first time；
One time room temperature is stood, and carries out normal temperature shelf, electrolyte is allowed sufficiently to infiltrate pole piece；
Room temperature chemical conversion carries out first low current charge to battery, and reaction forms SEI film；
Secondary room temperature is stood, and carries out normal temperature shelf, at normal temperature, the battery core being melted into is allowed to carry out slow secondary film-forming；
High temperature ageing allows battery core to carry out stablizing film forming at high temperature, it is ensured that SEI membrane stability is conducive to battery performance；
It cools, is held on natural cooling under normal temperature state, be convenient for sealing operation；
Sealing extracts the gas that battery core generates in formation process out, and carries out final encapsulation finished product.
Further, a room temperature is stood in step, and normal temperature and pressure time of repose is 24~72H.
Further, two step charge method is used in the room temperature chemical conversion step, total formation charging capacity SOC range is 30%
~70%；Firstly, once being charged with low current, and charging capacity is less than or equal to 10%SOC；Then, it is carried out with high current
Recharging, and charging capacity is greater than 10%SOC.
Further, battery is melted into using clamping plate room temperature in room temperature chemical conversion step, clamping plate pressure for 500~
1000kgf。
Further, formation charging blanking voltage is 3.5~3.8V in the room temperature chemical conversion step.
Further, during the secondary room temperature is stood, normal temperature and pressure time of repose is 12~36H.
Further, the high temperature ageing step, aging temperature is 35~55 DEG C under normal pressure, and ageing time is 12~36H.
Further, in the sealing step, vacuum degree is less than -90KPa.
Lithium ion battery provided by the present invention is melted into scheme, and integrated artistic is simple, and low energy consumption, high-efficient, equipment utilization
Rate is high, while can complete Battery formation in 2.5~3H, is conducive to large-scale industrial production.
Detailed description of the invention
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
Fig. 1 is the process flow chart that the present invention carries out lithium ion battery chemical conversion.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Conjunction is specifically illustrating, and the present invention is further explained.
For the problems of existing lithium ion battery chemical conversion scheme, this example provides one kind can be in 2.5~3H
Complete the quick chemical synthesis technology of Battery formation.
Referring to Fig. 1, the quick chemical synthesis technology of the lithium ion battery that this example provides is by successively carrying out the battery core after baking
Vacuum liquid filling just seals, and one time room temperature is stood, and room temperature chemical conversion, secondary room temperature is stood, and high temperature ageing cools and seal step
Suddenly, the quick chemical conversion that battery is completed in 2.5~3H is thus realized.
Chemical conversion step in this example is two step charge method, and the first step charges to 10%SOC, using 0.1C multiplying power, needs 1
Hour, then second step charges to 60%SOC, using 0.33C multiplying power, needs 90 minutes, then adds up, and always needs be within 2.5 hours
Achievable chemical conversion.
Based on the above principles, the illustratively specific implementation process of the quick chemical synthesis technology of this lithium ion battery below.
This example injects the electrolyte into battery core for the battery core after baking, first progress vacuum liquid filling, then is placed in true
30~60 seconds under dummy status, air in pole piece hole is effectively discharged, is conducive to electrolyte infiltration pole piece.
Then, just envelope is carried out, i.e., the soft pack cell of vacuum liquid filling is sealed for the first time.
Then, it carries out a room temperature to stand, carries out normal temperature shelf, electrolyte is allowed sufficiently to infiltrate pole piece.Although vacuum liquid filling
, but still cannot be guaranteed infiltration cmpletely, chemical conversion bad area is had when infiltrating insufficient chemical conversion below, surface has black
Spot is stood by a room temperature, to overcome the problems, such as this.
This step carries out 24~72H of standing at normal temperatures and pressures, has reached abundant effect of impregnation.
Then, room temperature chemical conversion is carried out, first low current charge is carried out to battery, reaction forms SEI film.
This example can effectively optimize utilization rate of equipment and installations, in fact by carrying out room temperature chemical conversion after a room temperature is stood
Now under same formation effect, the time is saved.
Two step charge method is used in this chemical conversion, total formation charging capacity SOC range is 30%~70%.
Wherein, size of current is used once to be charged for the low current of 0.01C~0.1C, and charging capacity is less than
Equal to 10%SOC；
After completing primary charging, size of current is used to carry out recharging for the slightly larger electric current of 0.1C~0.5C, and fill
Capacitance is greater than 10%SOC.
Thus, it is possible to effectively improve the efficiency to form SEI film and the stability for improving SEI film.
In this room temperature formation process, battery is melted into using clamping plate room temperature, and clamping plate pressure is 500~1000kgf, is conducive to
Reaction produces gas, is conducive to film formation reaction.
Furthermore in book room temperature formation process, formation charging blanking voltage is 3.5~3.8V, formation charging state-of-charge
For 30%~70%SOC.
Then, after completing room temperature chemical conversion, secondary room temperature standing is carried out to battery, to carry out slow secondary film-forming, into
One step stablizes SEI film.
In this step, 12~36H is stood at normal temperatures and pressures, so that film forming is complete.
Then, high temperature ageing is then carried out after completing secondary room temperature and standing, to stablize SEI film, makes its more complete, shape of reaction
At comparatively dense SEI film.
This step is carried out in normal pressure, and aging temperature is 35~55 DEG C, and ageing time is 12~36H.Pass through such high temperature shape
Reaction is conducive to stablize film forming under state.
Then, it after completing high temperature ageing, then cools down.
It is cooled to room temperature in this step using normal temperature and pressure.
Finally, after cooling to room temperature, then carrying out final encapsulation to battery.
When carrying out final encapsulation in this step, vacuum degree is less than -90KPa, thus pumps and to generate in chemical conversion film formation reaction
Gas.
By upper technique it is found that this programme is in entire battery forming process, other than needing high temperature ageing after chemical conversion, remaining
Process is all normal temperature and pressure, and low energy consumption, and without special installation, selected device is simple.Since higher temperature is for chemical conversion
Influential effect is larger, and open type environment temperature control difficulty is larger, slightly fluctuates and will affect battery consistency, and this programme is entire
It is wet without special temperature control, pressure control, control in the process, it is operated by normal temperature and pressure, substantially reduces the influence to formation effect, led to
The reaction of high temperature ageing secondary film-forming is crossed, the formation of the abundant infiltration and SEI film of electrolyte is conducive to, the battery after final chemical conversion is negative
Pole interface reaches design value without blackspot, analysis lithium, capacity performance.
Routine techniques thinks that chemical conversion needs low current to carry out primary charging, is conducive to SEI film and is formed, so when generally requiring
Between it is very long and different due to being chemically reacted under different state-of-charges, so step is relatively also complicated, and total time-consuming 6 hours with
On, chemical conversion is just completed, chemical conversion operates on formation device, and 6 hours holding times can only complete 4 batches of Battery formations in one day.
And this programme passes through the standing of chemical conversion front and back, high temperature places burn-in chamber, and room temperature does not need control temperature, so being not required to
Equipment is occupied, production capacity is not influenced；Shelving by front and back again realizes secondary film-forming, stablizes film forming；Being achieved in will be battery
2.5~3H is foreshortened at the time, efficiency can promote one times within one day, so that efficiency has obtained great promotion.
For above scheme, carry out further instruction below by way of specific application example.
Embodiment 1
This example is just sealed, one time room temperature is quiet by successively carrying out vacuum liquid filling to the LiFePO4 after baking/graphite battery core
It sets, room temperature chemical conversion, secondary room temperature is stood, and high temperature ageing cools, and sealing step is achieved in quick to lithium ion battery
Chemical conversion.The implementation process of each step is as described above, will not be repeated here herein in the formation process.
In this example, in a room temperature resting process, a normal temperature and pressure time of repose is 48H.
In room temperature formation process, primary charging 1H is first carried out with 0.1C, recharging 2H is then carried out with 0.2C.Together
When, chemical conversion temperature is 25 DEG C of room temperature, normal pressure, and chemical conversion clamping plate pressure is 800kgf.
In secondary room temperature resting process, secondary normal temperature and pressure time of repose is 24H.
In high temperature ageing process, high temperature ageing temperature is 50 DEG C, ageing time 18H.
Finally, cooling to be evacuated to -90KPa sealing after normal temperature and pressure cooling 8H.
Thus product 1 is obtained.
Embodiment 2
This example is just sealed, a room temperature by successively carrying out vacuum liquid filling to the nickle cobalt lithium manganate after baking/graphite battery core
It stands, room temperature chemical conversion, secondary room temperature is stood, and high temperature ageing cools, and sealing step is achieved in fast to lithium ion battery
Speed chemical conversion.The implementation process of each step is as described above, will not be repeated here herein in the formation process.
In this example, in a room temperature resting process, a normal temperature and pressure time of repose is 72H.
In room temperature formation process, primary charging 1H is first carried out with 0.1C, recharging 1.5H is then carried out with 0.33C.
Meanwhile being melted into temperature is 25 DEG C of room temperature, normal pressure, chemical conversion clamping plate pressure is 1000kgf.
In secondary room temperature resting process, secondary normal temperature and pressure time of repose is 36H.
In high temperature ageing process, high temperature ageing temperature is 45 DEG C, ageing time 24H.
Finally, cooling to be evacuated to -90KPa sealing after normal temperature and pressure cooling 6H.
Thus product 2 is obtained.
Embodiment 3
This example is just sealed, one time room temperature is quiet by successively carrying out vacuum liquid filling to nickel cobalt mangaic acid/graphite battery core after baking
It sets, room temperature chemical conversion, secondary room temperature is stood, and high temperature ageing cools, and sealing step is achieved in quick to lithium ion battery
Chemical conversion.The implementation process of each step is as described above, will not be repeated here herein in the formation process.
In this example, in a room temperature resting process, a normal temperature and pressure time of repose is 72H.
In room temperature formation process, primary charging 3H is carried out with 0.1C.Being melted into temperature is 25 DEG C of room temperature, normal pressure, chemical conversion folder
Plate pressure is 1000kgf.
In secondary room temperature resting process, secondary normal temperature and pressure time of repose is 24H.
In high temperature ageing process, high temperature ageing temperature is 45 DEG C, ageing time 24H.
Finally, cooling to be evacuated to -90KPa sealing after normal temperature and pressure cooling 6H.
Thus product 3 is obtained.
It can be seen that this programme, which can be realized, foreshortened to 2.5~3H for the Battery formation time, relative to conventional scheme one day
Efficiency can promote one times, so that efficiency has obtained great promotion.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (8)
1. the quick chemical synthesis technology of lithium ion battery, which is characterized in that successively carry out following steps to the battery core after baking:
Vacuum liquid filling；
Just envelope；
One time room temperature is stood；
Room temperature chemical conversion carries out first low current charge to battery, and reaction forms SEI film；
Secondary room temperature is stood, and the battery core being melted into is allowed to carry out slow secondary film-forming；
High temperature ageing allows battery core to carry out stablizing film forming；
It cools；
Sealing.
2. the quick chemical synthesis technology of lithium ion battery according to claim 1, which is characterized in that a room temperature stands step
In rapid, normal temperature and pressure time of repose is 24~72H.
3. the quick chemical synthesis technology of lithium ion battery according to claim 1, which is characterized in that in the room temperature chemical conversion step
Using two step charge method, total formation charging capacity SOC range is 30%~70%；Firstly, once charged with low current, and
Charging capacity is less than or equal to 10%SOC；Then, recharging is carried out with high current, and charging capacity is greater than 10%SOC.
4. the quick chemical synthesis technology of lithium ion battery according to claim 1, which is characterized in that in the room temperature chemical conversion step
Battery is melted into using clamping plate room temperature, and clamping plate pressure is 500~1000kgf.
5. the quick chemical synthesis technology of lithium ion battery according to claim 1, which is characterized in that in the room temperature chemical conversion step
Formation charging blanking voltage is 3.5~3.8V.
6. the quick chemical synthesis technology of lithium ion battery according to claim 1, which is characterized in that the secondary room temperature is stood
In, normal temperature and pressure time of repose is 12~36H.
7. the quick chemical synthesis technology of lithium ion battery according to claim 1, which is characterized in that the high temperature ageing step,
Aging temperature is 35~55 DEG C under normal pressure, and ageing time is 12~36H.
8. the quick chemical synthesis technology of lithium ion battery according to claim 1, which is characterized in that in the sealing step, very
Reciprocal of duty cycle is less than -90KPa.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111679219A (en) * | 2020-06-10 | 2020-09-18 | 江苏开沃汽车有限公司 | Self-discharge screening method for lithium ion power battery |
| CN112467130A (en) * | 2020-11-11 | 2021-03-09 | 安徽理士新能源发展有限公司 | Long-life high-temperature lithium iron phosphate battery and preparation method thereof |
| CN112736287A (en) * | 2020-12-25 | 2021-04-30 | 惠州亿纬创能电池有限公司 | Electrode wetting method, electrode and battery |
| CN112751098A (en) * | 2021-01-25 | 2021-05-04 | 唐山航天万源科技有限公司 | Formation method of lithium iron phosphate battery |
| CN114824430A (en) * | 2022-07-01 | 2022-07-29 | 江苏时代新能源科技有限公司 | Method and device for adjusting flatness of battery case and battery manufacturing system |
| CN115425309A (en) * | 2022-09-28 | 2022-12-02 | 楚能新能源股份有限公司 | High-efficiency forming method for soft package battery |
| CN117996215A (en) * | 2024-04-07 | 2024-05-07 | 宁德时代新能源科技股份有限公司 | Battery, preparation method thereof and electricity utilization device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103915643A (en) * | 2013-01-04 | 2014-07-09 | 深圳市鼎力源科技有限公司 | Method for improving performance of square aluminum-shell battery |
| CN106450464A (en) * | 2016-07-25 | 2017-02-22 | 珠海光宇电池有限公司 | Lithium battery formation method |
| CN106848408A (en) * | 2016-12-16 | 2017-06-13 | 国轩新能源（苏州）有限公司 | It is a kind of to improve the method that Soft Roll square high-temperature lithium ion battery stores gas production |
| 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 |
| CN107910592A (en) * | 2017-10-10 | 2018-04-13 | 珠海格力电器股份有限公司 | Formation method of lithium ion battery and lithium ion battery |
-
2018
- 2018-12-29 CN CN201811643773.6A patent/CN109659640A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103915643A (en) * | 2013-01-04 | 2014-07-09 | 深圳市鼎力源科技有限公司 | Method for improving performance of square aluminum-shell battery |
| 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 |
| CN106450464A (en) * | 2016-07-25 | 2017-02-22 | 珠海光宇电池有限公司 | Lithium battery formation method |
| CN106848408A (en) * | 2016-12-16 | 2017-06-13 | 国轩新能源（苏州）有限公司 | It is a kind of to improve the method that Soft Roll square high-temperature lithium ion battery stores gas production |
| 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 |
| CN107910592A (en) * | 2017-10-10 | 2018-04-13 | 珠海格力电器股份有限公司 | Formation method of lithium ion battery and lithium ion battery |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111679219A (en) * | 2020-06-10 | 2020-09-18 | 江苏开沃汽车有限公司 | Self-discharge screening method for lithium ion power battery |
| CN111679219B (en) * | 2020-06-10 | 2022-06-14 | 江苏开沃汽车有限公司 | Self-discharge screening method for lithium ion power battery |
| CN112467130A (en) * | 2020-11-11 | 2021-03-09 | 安徽理士新能源发展有限公司 | Long-life high-temperature lithium iron phosphate battery and preparation method thereof |
| CN112736287A (en) * | 2020-12-25 | 2021-04-30 | 惠州亿纬创能电池有限公司 | Electrode wetting method, electrode and battery |
| CN112751098A (en) * | 2021-01-25 | 2021-05-04 | 唐山航天万源科技有限公司 | Formation method of lithium iron phosphate battery |
| CN114824430A (en) * | 2022-07-01 | 2022-07-29 | 江苏时代新能源科技有限公司 | Method and device for adjusting flatness of battery case and battery manufacturing system |
| CN114824430B (en) * | 2022-07-01 | 2022-11-15 | 江苏时代新能源科技有限公司 | Method and device for adjusting flatness of battery case and battery manufacturing system |
| CN115425309A (en) * | 2022-09-28 | 2022-12-02 | 楚能新能源股份有限公司 | High-efficiency forming method for soft package battery |
| CN117996215A (en) * | 2024-04-07 | 2024-05-07 | 宁德时代新能源科技股份有限公司 | Battery, preparation method thereof and electricity utilization device |
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Application publication date: 20190419 |