CN107732314A - A kind of quick formation processing method for improving cycle performance of lithium ion battery - Google Patents
A kind of quick formation processing method for improving cycle performance of lithium ion battery Download PDFInfo
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- CN107732314A CN107732314A CN201711113670.4A CN201711113670A CN107732314A CN 107732314 A CN107732314 A CN 107732314A CN 201711113670 A CN201711113670 A CN 201711113670A CN 107732314 A CN107732314 A CN 107732314A
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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 formation processing method for improving cycle performance of lithium ion battery, by the main surface of lithium ion battery to be changed under extruding condition and hot conditions, two envelope processes are directly entered after 2 constant-current charges or 3 constant-current charges, wherein, the extruding condition is 1.0~1.5MPa, and the temperature conditionss are 45~65 DEG C.The present invention is different according to the system of lithium ion battery, takes different chargings to limit, and can farthest shorten the chemical conversion time, while homogeneous and fine and close SEI films are formed in electrode interface, effectively improves the cycle performance of battery.
Description
Technical field
The invention belongs to field of lithium ion battery, specifically, is related to a kind of the fast of improvement cycle performance of lithium ion battery
Fast formation processing method.
Background technology
Since the late 19th century, with the continuous deterioration of environment for human survival, people gradually recognize the importance of environmental protection,
Countries in the world are just in Devoting Major Efforts To Developing " new energy " technology.Lithium ion battery because with high-energy-density, high voltage, low self-discharge,
The advantages that memory-less effect, long circulation life, widely applied, such as：3C electric consumers, electric car, energy storage etc.
Industry.With continuous exhausted and continuous pollution of the vehicle exhaust to environment of the traditional energies such as oil, pure electric vehicle (EV) and mix
Development trend of the electric car (HEV) as Future New Energy Source automobile is closed, obtains the support energetically of national governments with developing, and pure electricity
The power core of motor-car and hybrid electric vehicle is mainly lithium ion battery, so the lithium ion battery of function admirable is that decision is electronic
The good and bad key factor of car.
Chemical conversion is that lithium ion battery produces one of important process, i.e. battery first passage low current, and battery is swashed
Living or activation, while form solid electrolyte interface (SEI) film in cathode interface.SEI films are Li+ excellence conductors, can
Allow lithium ion to be transmitted wherein, enter graphite surface, carry out removal lithium embedded work.It is again simultaneously good electronic isolation
Body, the short-circuit probability of inside can be effectively reduced, improve self discharge.What is more important, it can effectively prevent solvent molecule
It is embedded altogether, avoid destroying caused by electrode material because solvent molecule is embedded in altogether, thus greatly improve battery cycle performance and
Service life.In formation process, if SEI that can be good can not be formed, battery occurs more in follow-up cyclic process
Side reaction, cause battery capacity rapid decrease, while produce gas, the lives and properties of consumer are caused greatly to threaten.
A kind of chemical conversion treatment mode (publication No. of the entitled polymer soft-package battery of patent：The A of CN 104269584), this is special
Profit discloses a kind of chemical conversion treatment mode of soft-package battery, but this method, during chemical conversion, the cut-off of constant-current charge is electric
Press as 3.9-3.95V, LiFePO4 system can not be adapted to；In addition, this method requires the electricity extruded after constant-current charge by fixture
Pond waits and is down to normal temperature, is radiated in this condition difficulty however, actual conditions are batteries, and it is very slow to be cooled to normal temperature, chemical conversion
Time is grown.Meanwhile traditional chemical conversion treatment mode time is also longer, in the SEI films homogeneity and compactness that electrode interface is formed
Typically, cause battery cycle life short, based on above reason, it is necessary to urgently develop a kind of short time, efficiency high, can be formed it is excellent
The chemical conversion treatment mode of good SEI films.
In view of this it is special to propose the present invention.
The content of the invention
The technical problem to be solved in the present invention is overcome the deficiencies in the prior art, there is provided one kind improves lithium ion battery and followed
The quick formation processing method of ring performance, it is different according to the system of lithium ion battery, take different chargings to limit, can be maximum
Shorten to degree the chemical conversion time, while homogeneous and fine and close SEI films are formed in electrode interface, effectively improve the circulation of battery
Performance.
In order to solve the above technical problems, the present invention is using the basic conception of technical scheme：
A kind of quick formation processing method for improving cycle performance of lithium ion battery, by the master of lithium ion battery to be changed
Dignity after 2~3 constant-current charges, is not required to high temperature and shelved, be directly entered two envelope works under extruding condition and hot conditions
Sequence, nip pressure are 1.0~1.5MPa, and temperature is 45~65 DEG C, and the electric current that constant current one is filled be 0.01~0.2C, the time for 10~
30min；The electric current that constant current two is filled is 0.2C~0.7C, and the time is 50~120min；The electric current that constant current three is filled is 0.3~1C, when
Between be 80~110min.
Different systems, constant-current charge number is different, and further, the positive electrode of described lithium ion battery is ternary
(nickel cobalt manganese, nickel cobalt aluminium), LiMn2O4, the one or more of cobalt acid lithium, formation process constant-current charge is twice.
Further, the positive electrode of described lithium ion battery is LiFePO4, and formation process constant-current charge is three times.
Constant-current charge in formation process is divided into 2 times and 3 times, further, can be divided into：
Scheme (a)：It is melted into constant-current charge twice, battery is 1.0~1.5MPa in nip pressure, and temperature is 45~65 DEG C,
The electric current that constant current one is filled is 0.01~0.2C, and the time is 10~30min, 3.6~4.0V of protection blanking voltage；The electricity that constant current two is filled
It is 50~120min to flow for 0.2C~0.7C, time, and protection blanking voltage is 3.6~4.0V.
Scheme (b)：It is melted into constant-current charge three times, battery is 1.0~1.5MPa in nip pressure, and temperature is 45~65 DEG C,
The electric current that constant current one is filled is 0.01~0.2C, and the time is 10~30min, 3.0~3.6V of protection blanking voltage；The electricity that constant current two is filled
It is 50~120min to flow for 0.2C~0.7C, time, 3.0~3.6V of protection blanking voltage；The electric current that constant current three is filled be 0.3~
1C, time are 90~110min, 3.0~3.6V of protection blanking voltage.
After constant-current charging of battery terminates, it is not required to high temperature and shelves, is directly entered two envelope processes.
After adopting the above technical scheme, the present invention has the advantages that compared with prior art.
(1) conventional lithium ion battery production technology, intercell successively shelve process by 7~10h chemical conversions, 12h high temperature,
Finally carry out two envelopes, production cycle length；And the Battery formation processing mode time of the present invention is short, the battery after fluid injection is shelved only needs
After 2.5~3.5h chemical conversions, two envelope processes can be directly entered, greatly shorten the battery production cycle；
(2) it under conditions of nip pressure, can effectively make electrolyte more abundant with electrode material contacts, while will change
Airbag is expelled in time into caused gas, advantageously forms the SEI films of uniform compact, improves the cycle performance of battery, in addition,
Nip pressure can also play a part of shaping to battery；
(3) chemical conversion treatment mode of the invention is more comprehensive, according to the difference of material property, is related to LiFePO4 system
The chemical synthesis technology of battery, it is practical, be advantageous to equipment promotion application.
The embodiment of the present invention is described in further detail below in conjunction with the accompanying drawings.
Brief description of the drawings
A part of the accompanying drawing as the application, for providing further understanding of the invention, of the invention is schematic
Embodiment and its illustrate to be used to explain the present invention, but do not form inappropriate limitation of the present invention.Obviously, drawings in the following description
Only some embodiments, to those skilled in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.In the accompanying drawings：
Fig. 1 is the cycle performance of battery figure of example one, example two and example three；
Fig. 2 is the cycle performance of battery figure of example four, example five and example six.
It should be noted that these accompanying drawings and word description are not intended as the design model limiting the invention in any way
Enclose, but be that those skilled in the art illustrate idea of the invention by reference to specific embodiment.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in embodiment is clearly and completely described, following examples be used for illustrate the present invention, but
It is not limited to the scope of the present invention.
Example one：
So that the positive electrode of battery is ternary material as an example, specific implementation step is as follows：
1) by the lithium ion battery Over-The-Counter after fluid injection on the formation device of high pressure-temperature, the battery surface pressure of equipment setting
Strong is 1.0MPa, and battery surface temperature is 60 DEG C, shelves 10min, to ensure that the pressure of battery surface and temperature are set with equipment
Value is consistent；
2) chemical conversion constant current one is filled, and is charged using 0.1C electric currents, charging interval 25min, and charge protection blanking voltage is
3.85V, 3min is shelved after charging；
3) chemical conversion constant current two is filled, and is charged using 0.5C electric currents, charging interval 115min, and charge protection blanking voltage is
3.85V, shelve 3min；
4) cabinet under battery core, two envelope processes are directly entered.
Example two：
Example two and example one are essentially identical, and difference is：Under battery core after cabinet, two envelope processes are not directly entered, but first
After high temperature shelves 12h, two envelope processes are entered back into.
Example three：
Example three is traditional chemical conversion treatment mode, and specific implementation step is as follows：
1) battery core to be changed is subjected to cold pressing shaping；
2) by the battery core Over-The-Counter after cold pressing shaping on formation device, carry out chemical conversion one and fill, charged using 0.072C electric currents,
Charging interval 40min, charge protection blanking voltage are 4.1V, shelve 3min；
3) chemical conversion two is filled, and is charged using 0.05C electric currents, and charging interval 180min, charge protection blanking voltage is 4.1V,
Shelve 3min；
4) chemical conversion three is filled, and is charged using 0.1C electric currents, and charging interval 120min, charge protection blanking voltage is 4.1V,
Shelve 3min；
5) chemical conversion four is filled, and is charged using 0.2C electric currents, charging interval 60min, charge protection blanking voltage is 4.1V, is put
Put 3min；
6) cabinet under battery core, after first high temperature shelves 12h, into two envelope processes.
Comparative example one：
The chemical conversion real time of 3 groups of examples contrasts with cycle performance by more than below, obtains as shown in table 1：
Table 1：
Example four：
So that the positive electrode of battery is LiFePO 4 material as an example, specific implementation step is as follows：
1) by the lithium ion battery Over-The-Counter after fluid injection on the formation device of high pressure-temperature, the battery surface pressure of equipment setting
Strong is 1.0MPa, and battery surface temperature is 60 DEG C, shelves 10min, to ensure that the pressure of battery surface and temperature are set with equipment
Value is consistent；
2) chemical conversion constant current one is filled, and is charged using 0.02C electric currents, charging interval 10min, and charge protection blanking voltage is
3.47V, 3min is shelved after charging；
3) chemical conversion constant current two is filled, and is charged using 0.2C electric currents, charging interval 60min, and charge protection blanking voltage is
3.47V, shelve 3min；
4) chemical conversion constant current three is filled, and is charged using 0.36C electric currents, charging interval 100min, and charge protection blanking voltage is
3.47V, shelve 3min；
5) cabinet under battery core, two envelopes are directly entered.
Example five：
Example five and example four are essentially identical, and difference is：Under battery core after cabinet, two envelope processes are not directly entered, but first
After high temperature shelves 12h, two envelope processes are entered back into.
Example six：
Example six is traditional chemical conversion treatment mode, and specific implementation step is as follows：
1) battery core to be changed is subjected to cold pressing shaping；
2) by the battery core Over-The-Counter after cold pressing shaping on formation device, carry out chemical conversion one and fill, charged using 0.02C electric currents,
Charging interval 60min, protection blanking voltage are 3.47V, shelve 3min；
3) chemical conversion two is filled, and is charged using 0.05C electric currents, charging interval 240min, protection blanking voltage is 3.47V, is put
Put 3min；
4) chemical conversion three is filled, and is charged using 0.1C electric currents, charging interval 240min, protection blanking voltage is 3.47V, is shelved
3min；
5) cabinet under battery core, after first high temperature shelves 12h, into two envelope processes.
Comparative example two：
The chemical conversion real time of 3 groups of examples contrasts by more than below, obtains as shown in table 2：
Table two：
| Sequence number | Group | It is melted into total time/h | Circulate 570 weeks conservation rates |
| 1 | Example four | 3 | 95.74% |
| 2 | Example five | 15 | 95.67% |
| 3 | Example six | 21.5 | 92.90% |
For the present invention by the way of extruding high temperature chemical conversion, battery core is directly entered two envelope processes after chemical conversion, can be at utmost
Ground shortens the chemical conversion time, while homogeneous and fine and close SEI films are formed in electrode interface, effectively improves the cyclicity of battery
Energy.
Described above is only presently preferred embodiments of the present invention, not makees any formal limitation to the present invention, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any technology people for being familiar with this patent
Member without departing from the scope of the present invention, when the technology contents using above-mentioned prompting make it is a little change or be modified to
The equivalent embodiment of equivalent variations, as long as being the content without departing from technical solution of the present invention, the technical spirit pair according to the present invention
Any simple modification, equivalent change and modification that above example is made, in the range of still falling within the present invention program.
Claims (5)
1. it is a kind of improve cycle performance of lithium ion battery quick formation processing method, it is characterised in that by lithium to be changed from
The main surface of sub- battery is directly entered two under extruding condition and hot conditions after 2 constant-current charges or 3 constant-current charges
Process is sealed, wherein, the extruding condition is 1.0~1.5MPa, and the temperature conditionss are 45~65 DEG C.
2. a kind of quick formation processing method for improving cycle performance of lithium ion battery according to claim 1, its feature
It is, the positive electrode of the lithium ion battery passes through 2 constant-current charges, the ternary for tertiary cathode material and formation process
Positive electrode is nickel cobalt manganese, nickel cobalt aluminium, LiMn2O4, one kind or any combination of cobalt acid lithium.
3. a kind of quick formation processing method for improving cycle performance of lithium ion battery according to claim 1, its feature
It is, the positive electrode of the lithium ion battery is LiFePO4, and formation process passes through 3 constant-current charges.
4. a kind of quick formation processing method for improving cycle performance of lithium ion battery according to claim 1, its feature
It is, 2 constant-current charges include first time constant-current charge, the second constant-current charge, the electric current of the first time constant-current charge
For 0.01~0.2C, the time is 10~30min, 3.6~4.0V of protection blanking voltage；The electric current of second of constant-current charge is
0.2C~0.7C, time are 50~120min, and protection blanking voltage is 3.6~4.0V.
5. a kind of quick formation processing method for improving cycle performance of lithium ion battery according to claim 1, its feature
It is, 3 constant-current charges include first time constant-current charge, the second constant-current charge, third time constant-current charge, the first time
The electric current of constant-current charge is 0.01~0.2C, and the time is 10~30min, 3.0~3.6V of protection blanking voltage；Described second permanent
The electric current of current charge is 0.2C~0.7C, and the time is 50~120min, 3.0~3.6V of protection blanking voltage；The third time is permanent
The electric current of current charge is 0.3~1C, and the time is 90~110min, 3.0~3.6V of protection blanking voltage.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108493453A (en) * | 2018-04-16 | 2018-09-04 | 桑顿新能源科技有限公司 | A kind of high-energy density LiFePO4 system soft-package battery and preparation method thereof |
| CN109167112A (en) * | 2018-08-13 | 2019-01-08 | 浙江衡远新能源科技有限公司 | A kind of high-temperature clamp chemical synthesizing method of lithium titanate battery |
| CN111180800A (en) * | 2020-03-04 | 2020-05-19 | 广东博龙能源科技有限公司 | Formation process of lithium ion battery and lithium ion 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 |
| WO2021127929A1 (en) * | 2019-12-23 | 2021-07-01 | 宁德新能源科技有限公司 | Preparation method for secondary battery |
| CN114039099A (en) * | 2021-11-02 | 2022-02-11 | 远景动力技术(江苏)有限公司 | Formation method and application of lithium ion battery |
| CN114597499A (en) * | 2022-02-25 | 2022-06-07 | 惠州锂威新能源科技有限公司 | Formation method and preparation method of lithium ion battery and lithium ion battery |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009219221A (en) * | 2008-03-10 | 2009-09-24 | Panasonic Corp | Charging equipment |
| CN102368571A (en) * | 2011-09-05 | 2012-03-07 | 东莞新能源科技有限公司 | Precharge method of lithium ion batteries |
| 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 |
| CN103187590A (en) * | 2011-12-27 | 2013-07-03 | 比亚迪股份有限公司 | Formation method for lithium ion battery and lithium ion battery |
| CN103579679A (en) * | 2012-08-09 | 2014-02-12 | 北汽福田汽车股份有限公司 | Formation method of lithium iron phosphate power battery |
| CN104269584A (en) * | 2014-10-16 | 2015-01-07 | 保定风帆新能源有限公司 | Method for forming polymer lithium battery |
| CN104332670A (en) * | 2014-10-27 | 2015-02-04 | 山东圣阳电源股份有限公司 | Method for formation charging of lithium iron phosphate battery |
| CN105406129A (en) * | 2015-11-06 | 2016-03-16 | 珠海光宇电池有限公司 | Formation method of lithium ion battery |
| CN106785052A (en) * | 2015-11-23 | 2017-05-31 | 中信国安盟固利动力科技有限公司 | A kind of chemical synthesizing method of lithium titanate battery |
-
2017
- 2017-11-13 CN CN201711113670.4A patent/CN107732314A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009219221A (en) * | 2008-03-10 | 2009-09-24 | Panasonic Corp | Charging equipment |
| CN102368571A (en) * | 2011-09-05 | 2012-03-07 | 东莞新能源科技有限公司 | Precharge method of lithium ion batteries |
| CN103187590A (en) * | 2011-12-27 | 2013-07-03 | 比亚迪股份有限公司 | Formation method for lithium ion battery and 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 |
| CN103579679A (en) * | 2012-08-09 | 2014-02-12 | 北汽福田汽车股份有限公司 | Formation method of lithium iron phosphate power battery |
| CN104269584A (en) * | 2014-10-16 | 2015-01-07 | 保定风帆新能源有限公司 | Method for forming polymer lithium battery |
| CN104332670A (en) * | 2014-10-27 | 2015-02-04 | 山东圣阳电源股份有限公司 | Method for formation charging of lithium iron phosphate battery |
| CN105406129A (en) * | 2015-11-06 | 2016-03-16 | 珠海光宇电池有限公司 | Formation method of lithium ion battery |
| CN106785052A (en) * | 2015-11-23 | 2017-05-31 | 中信国安盟固利动力科技有限公司 | A kind of chemical synthesizing method of lithium titanate battery |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108493453A (en) * | 2018-04-16 | 2018-09-04 | 桑顿新能源科技有限公司 | A kind of high-energy density LiFePO4 system soft-package battery and preparation method thereof |
| CN109167112A (en) * | 2018-08-13 | 2019-01-08 | 浙江衡远新能源科技有限公司 | A kind of high-temperature clamp chemical synthesizing method of lithium titanate battery |
| WO2021127929A1 (en) * | 2019-12-23 | 2021-07-01 | 宁德新能源科技有限公司 | Preparation method for secondary battery |
| CN113316864A (en) * | 2019-12-23 | 2021-08-27 | 宁德新能源科技有限公司 | Method for manufacturing secondary battery |
| CN113316864B (en) * | 2019-12-23 | 2022-11-11 | 宁德新能源科技有限公司 | Method for manufacturing secondary battery |
| CN111180800A (en) * | 2020-03-04 | 2020-05-19 | 广东博龙能源科技有限公司 | Formation process of lithium ion battery and lithium ion 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 |
| CN114039099A (en) * | 2021-11-02 | 2022-02-11 | 远景动力技术(江苏)有限公司 | Formation method and application of lithium ion battery |
| CN114597499A (en) * | 2022-02-25 | 2022-06-07 | 惠州锂威新能源科技有限公司 | Formation method and preparation method of lithium ion battery and lithium ion battery |
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