CN108598556A - A kind of high temperature modification polymer Li-ion battery and preparation method thereof - Google Patents
A kind of high temperature modification polymer Li-ion battery and preparation method thereof Download PDFInfo
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Abstract
A kind of high temperature modification polymer Li-ion battery of the present invention and preparation method thereof.The lithium ion battery includes mainly positive plate, negative plate, porous isolating membrane and electrolyte;The positive plate includes:Cobalt acid lithium, Kynoar, carbon nanotube, carbon black;The negative plate includes:Artificial graphite, carboxycellulose sodium, butadiene-styrene rubber and carbon black;The porous isolating membrane is mixed painting diaphragm;The electrolyte is made of lithium salts, carbonate mixture and additive.Cobalt acid lithium and artificial graphite have the characteristics that D10 is larger and specific surface area is smaller, are conducive to weaken side reaction under hot conditions and occur, stablize battery performance;Isolation film applies diaphragm using ceramics/Kynoar is mixed, is conducive to the thermal stability of battery molding and battery;Additive composition used in electrolyte has the function of anode, cathode film formation protection, and dosage is relatively low, advantageously reduces battery impedance, is conducive to cycle performance.
Description
Technical field
The invention belongs to technical field of lithium ion, it is related to a kind of high temperature modification polymer Li-ion battery and its preparation side
Method.
Background technology
Lithium ion battery is widely used in automobile, storage due to the advantages that its is environmental-friendly, energy density is high, good cycle
The fields such as energy, number.Polymer Li-ion battery energy density is with respect to liquid lithium ionic cell higher, and battery appearance can root
It is especially welcome in digital domain according to needing to customize.Performance is difficult to protect existing polymer Li-ion battery under high temperature environment
Card usually only meets under 60 DEG C of environment and ensures cycle life in storage and 45 DEG C of environment.And stored under 85 DEG C of environment, battery is difficult
With regular picture, or even there is gas and rise phenomenon, cycle life is also short under 60 DEG C of environment.This cannot meet for high temperature area and
The demand of the equipment of hot environment.
Invention content
The object of the present invention is to provide a kind of high temperature modification lithium ion battery and preparation method thereof, the polymer Li-ion batteries
After 85 DEG C of hot environments are stored, battery performance keeps normal;Under room temperature and 60 DEG C of hot environments, battery cycle life is good.
Technical solution of the present invention is as follows.
A kind of high temperature modification polymer Li-ion battery, the lithium ion battery include mainly positive plate, negative plate, porous isolation
Film and electrolyte;
The positive plate divides the percentages to include by quality:Cobalt acid lithium 94~97%, Kynoar (PVDF) 1~2%:
Carbon nanotube (CNT) 1~2%:Carbon black (SP) 1~2%;
The negative plate divides the percentages to include by quality:Artificial graphite 90~96%, carboxycellulose sodium (CMC) 1.5
~2%, butadiene-styrene rubber (SBR) 1.5~2.5%, carbon black (SP) 1~2%;
The porous isolating membrane is mixed painting diaphragm;
The electrolyte is made of lithium salts, carbonate mixture and additive.
A kind of high temperature modification polymer Li-ion battery according to claim 1, it is characterised in that:The positive plate
Cobalt acid lithium D10 is 10~14 μm, and specific surface area is:0.2~0.3m2/g.A kind of high temperature modification polymerization according to claim 1
Object lithium ion battery, it is characterised in that:The artificial graphite D10 of the negative plate is 13~17 μm, and specific surface area is:0.6~
1.0m2/g.A kind of high temperature modification polymer Li-ion battery according to claim 1, it is characterised in that:The porous isolation
Film applies diaphragm to be mixed, and basement membrane is polyethylene porous membrane, and basement membrane thickness is 9~16 μm, and mixed coating is alundum (Al2O3) and gathers inclined
The mixture of vinyl fluoride forms, and coating layer thickness is 3 μm, and coating corresponds to positive pole-face.
Further, the lithium salts of the electrolyte is LiPF6, and the content of lithium salts is 1.0~1.2mol/L;
The mass ratio of the carbonate mixture each component is ethylene carbonate (EC):Propene carbonate (PC):Carbonic acid
Diethylester (DEC):Ethyl methyl carbonate (EMC):Dimethyl carbonate (DMC)=30~45:5~20:30~45:0~15:0~15;
The carbonate mixture accounts for the 75%~85% of electrolyte gross mass;
The additive level accounts for the 1%~9% of electrolyte gross mass, and the mass ratio of various additives is:Fluoro carbon
Vinyl acetate (FEC):Vinylene carbonate (VC):1,3- propane sultone (PS), succinonitrile (AN):Adiponitrile (ADN)=1
~3:1~3:0.2~1:0~1:0~1.
Further, the lithium ion battery passes through:It prepares positive plate, prepare negative plate-welding electrode ear-winding-assembly-baking
Polymer Li-ion battery is made in roasting-fluid injection-high temperature ageing-- two envelopes of chemical conversion-molding-partial volume process.
Further, the positive plate is obtained by three steps;
First step example cobalt acid lithium in mass ratio:Kynoar (PVDF):Carbon nanotube (CNT):Carbon black (SP)=94~
97%:1~2%:1~2%:1~2% weighs material requested, and anode sizing agent is obtained by blender batch mixing;
First step slurry is coated on using coating machine in aluminum foil current collector by second step, coated face density≤42mg/cm2,
Third walks, using walking pole piece, roll-in density≤4.0g/cm in roll squeezer roll-in3。
Further, the negative plate is obtained by two steps;
First step example artificial graphite in mass ratio:Carboxycellulose sodium (CMC):Butadiene-styrene rubber (SBR):Carbon black (SP)=90
~96%:1.5~2%:1.5~2.5%:1~2% weighs material requested, and negative electrode slurry is obtained by blender batch mixing;
First step slurry is coated on using coating machine in copper foil current collector by second step, coated face density≤21mg/cm2;
Third step uses and walks pole piece, roll-in density≤1.5g/cm in roll squeezer roll-in3。
Further, the temperature parameter of the high temperature ageing process is 40~50 DEG C, and ageing time is 36~48 hours.
Compared with prior art, advantage of the invention is that:
1. cobalt acid lithium and artificial graphite have the characteristics that D10 is larger and specific surface area is smaller, be conducive to weaken hot conditions
Lower side reaction occurs, and stablizes battery performance;
2. isolation film applies diaphragm using ceramics/Kynoar is mixed, be conducive to the thermal stability of battery molding and battery;
3. the carbonic ester composition used in electrolyte has the characteristics that boiling point is high, infiltration is good, is conducive to high-temperature stability and follows
Ring performance;
4. the additive composition used in electrolyte has the function of anode, cathode film formation protection, and dosage is relatively low, favorably
In reducing battery impedance, be conducive to cycle performance;
5. positive plate and cathode slice prescription are reasonable, the internal resistance of cell is advantageously reduced, cycle performance is conducive to;And surface density
It is moderate with compacted density, be conducive to electrolyte and fully infiltrate pole piece, is conducive to cycle performance;
6. high temperature ageing temperature and time, which is conducive to electrolyte, fully infiltrates pole piece, be conducive to cycle performance.
8. the polymer Li-ion battery of the present invention, after 85 DEG C of hot environments are stored, battery performance keeps normal;Normal
Under mild 60 DEG C of hot environments, battery cycle life is good.
Specific implementation mode
The present invention is described in further details with reference to specific embodiment.Following embodiment helps to understand this hair
It is bright, but therefore do not limit the present invention among the embodiment described range.
In following embodiments, a kind of high temperature modification polymer Li-ion battery, mainly include positive plate, negative plate, it is porous every
Film and organic electrolyte.The positive plate mainly contains cobalt acid lithium;The negative plate mainly contains artificial graphite;The isolation film
Diaphragm is applied for ceramics/Kynoar is mixed;The electrolyte is made of lithium salts, carbonate mixture and various additives.This hair
For bright polymer Li-ion battery after 85 DEG C of hot environments are stored, battery performance keeps normal;In room temperature and 60 DEG C of high temperature rings
Under border, battery cycle life is good.
Embodiment 1
The cobalt acid lithium D10 of the positive plate is 11 μm, and specific surface area is:0.2m2/g
The artificial graphite D10 of the negative plate is 13 μm, and specific surface area is:0.9m2/g。
The basement membrane of the isolation film is polyethylene porous membrane, and basement membrane thickness is 12 μm, and mixed coating is alundum (Al2O3) and gathers
The mixture of vinylidene, the two mass ratio are 1:1 composition, coating layer thickness is 3 μm, and coating corresponds to positive pole-face.
The lithium salts of the electrolyte is LiPF6, and the content of lithium salts is 1.0mol/L;
The mass ratio of the carbonate mixture each component is ethylene carbonate (EC):Propene carbonate (PC):Carbonic acid
Diethylester (DEC):Ethyl methyl carbonate (EMC)=40:15:30:15;
The additive level accounts for the 5.5% of electrolyte gross mass, and the mass ratio of various additives is fluoro carbonic acid second
Enester (FEC):Vinylene carbonate (VC):1,3- propane sultone (PS), succinonitrile (AN):Adiponitrile (ADN)=3:1:
0.5:0.5:0.5.
The lithium ion battery passes through:It prepares positive plate, prepare negative plate-welding electrode ear-winding-assembly-baking-fluid injection-
Polymer Li-ion battery is made in high temperature ageing-- two envelopes of chemical conversion-molding-partial volume process.
Wherein, positive plate is obtained by following three steps;
First step example cobalt acid lithium in mass ratio:Kynoar (PVDF):Carbon nanotube (CNT):Carbon black (SP)=96:2:
1:1 weighs material requested, and anode sizing agent is obtained by blender batch mixing;
First step slurry is coated in aluminum foil current collector by second step, coated face density 40mg/cm2,
Third walks, using walking pole piece, roll-in density 4.0g/cm in roll squeezer roll-in3。
Negative plate is obtained by following three steps;
First step example artificial graphite in mass ratio:Carboxycellulose sodium (CMC):Butadiene-styrene rubber (SBR):Carbon black (SP)=
95:1.7:2:1.3 weigh material requested, and negative electrode slurry is obtained by blender batch mixing;
First step slurry is coated in copper foil current collector by second step, coated face density 18mg/cm2,
Third walks, and using pole piece is walked in roll squeezer roll-in, roll-in density is 1.5g/cm3。
The temperature parameter of the high temperature ageing process is 40~50 DEG C, and ageing time is 36~48 hours.
Embodiment 2
The cobalt acid lithium D10 of the positive plate is 11 μm, and specific surface area is:0.2m2/g;
The artificial graphite D10 of the negative plate is 13 μm, and specific surface area is:0.9m2/g。
The basement membrane of the isolation film is polyethylene porous membrane, and basement membrane thickness is 12 μm, and mixed coating is alundum (Al2O3) and gathers
The mixture of vinylidene forms, and coating layer thickness is 3 μm, and coating corresponds to positive pole-face.
The lithium salts of the electrolyte is LiPF6, and the content of lithium salts is 1.0mol/L;
The mass ratio of the carbonate mixture each component is ethylene carbonate (EC):Propene carbonate (PC):Carbonic acid
Diethylester (DEC):Ethyl methyl carbonate (EMC)=40:15:30:15;The carbonate mixture accounts for electrolyte gross mass
81.5%.
The additive level accounts for the 5.5% of electrolyte gross mass, and the mass ratio of various additives is fluoro carbonic acid second
Enester (FEC):Vinylene carbonate (VC):1,3- propane sultone (PS), succinonitrile (AN):Adiponitrile (ADN)=3:1:
0.5:0.5:0.5.
The lithium ion battery passes through:It prepares positive plate, prepare negative plate-welding electrode ear-winding-assembly-baking-fluid injection-
Polymer Li-ion battery is made in the processes such as high temperature ageing-- two envelopes of chemical conversion-molding-partial volume.
Wherein, positive plate is obtained by following three steps;
First step example cobalt acid lithium in mass ratio:Kynoar (PVDF):Carbon nanotube (CNT):Carbon black (SP)=96:2:
1:1 weighs material requested, and anode sizing agent is obtained by blender batch mixing;
First step slurry is coated in aluminum foil current collector by second step, coated face density 42mg/cm2,
Third walks, using walking pole piece, roll-in density 4.0g/cm in roll squeezer roll-in3。
Negative plate is obtained by following three steps;
First step example artificial graphite in mass ratio:Carboxycellulose sodium (CMC):Butadiene-styrene rubber (SBR):Carbon black (SP)=
95:1.7:2:1.3 weigh material requested, and negative electrode slurry is obtained by blender batch mixing;
First step slurry is coated in copper foil current collector by second step, coated face density 19mg/cm2,
Third walks, using walking pole piece, roll-in density 1.5g/cm in roll squeezer roll-in3。
The temperature parameter of the high temperature ageing process is 40~50 DEG C, and ageing time is 36~48 hours.
Embodiment 3
The cobalt acid lithium D10 of the positive plate is 11 μm, and specific surface area is:0.2m2/g;
The artificial graphite D10 of the negative plate is 13 μm, and specific surface area is:0.9m2/g。
The basement membrane of the isolation film is polyethylene porous membrane, and basement membrane thickness is 12 μm, and mixed coating is alundum (Al2O3) and gathers
The mixture of vinylidene forms, and coating layer thickness is 3 μm, and coating corresponds to positive pole-face.
The lithium salts of the electrolyte is LiPF6, and the content of lithium salts is 1.0mol/L;
The mass ratio of the carbonate mixture each component is ethylene carbonate (EC):Propene carbonate (PC):Carbonic acid
Diethylester (DEC):Ethyl methyl carbonate (EMC)=40:15:30:15;
The additive level accounts for the 6.5% of electrolyte gross mass, and the mass ratio of various additives is fluoro carbonic acid second
Enester (FEC):Vinylene carbonate (VC):1,3- propane sultone (PS), succinonitrile (AN):Adiponitrile (ADN)=3:1:
0.5:1:1.
The lithium ion battery passes through:It prepares positive plate, prepare negative plate-welding electrode ear-winding-assembly-baking-fluid injection-
Polymer Li-ion battery is made in the processes such as high temperature ageing-- two envelopes of chemical conversion-molding-partial volume.
Wherein, positive plate is obtained by following three steps;
First step example cobalt acid lithium in mass ratio:Kynoar (PVDF):Carbon nanotube (CNT):Carbon black (SP)=96:2:
1:1 weighs material requested, and anode sizing agent is obtained by blender batch mixing;
First step slurry is coated in aluminum foil current collector by second step, coated face density 42mg/cm2,
Third walks, using walking pole piece, roll-in density 4.0g/cm in roll squeezer roll-in3。
Negative plate is obtained by following three steps:
First step example artificial graphite in mass ratio:Carboxycellulose sodium (CMC):Butadiene-styrene rubber (SBR):Carbon black (SP)=
95:1.7:2:1.3 weigh material requested, and negative electrode slurry is obtained by blender batch mixing;
First step slurry is coated in copper foil current collector by second step, coated face density 19mg/cm2,
Third walks, using walking pole piece, roll-in density 1.5g/cm in roll squeezer roll-in3。
The temperature parameter of the high temperature ageing process is 40~50 DEG C, and ageing time is 36~48 hours.
Polymer Li-ion battery prepared by embodiment 1,2,3 is tested for the property:(1) 85 DEG C of high temperature storage test:25
Under ± 5 DEG C of environment then battery is placed in 85 DEG C of environment by 1C electric currents by the fully charged 4.2V of battery, is stored 24 hours, and electricity is taken out
Pond measures thickness and the internal resistance variation of battery;After being placed 2 hours under 25 ± 5 DEG C of environment, 0.2C current discharge 3.0V measure electricity
Pond residual capacity, then 0.5C chargings 4.2V, 0.2C electric discharge 3.0V, test restore capacity.It is obtained by performance calculating before and after storage
Obtain the data such as cell thickness change rate.
(2) 60 DEG C of high temperature circulation tests:Battery is put into 60 DEG C of environment, 0.5C fully charged 4.2V, 0.5C electric discharge 3.0V,
Charge-discharge cycle 500 times observes the capacity retention ratio, thickness change and internal resistance change rate of battery.
Table 1 is 85 DEG C of high temperature storage test results
Table 2 is 60 DEG C of high temperature circulation test results
Table 1
Table 2
As known from Table 1,85 DEG C of high temperature of all embodiments store the equal OK of test performance, and cell thickness change rate is less than 8%,
Capacity retention ratio is 80% or more, and capacity restoration rate is 85% or more;The performance ratio embodiment 1 of embodiment 2 is poor, because of positive plate
Bigger with the surface density of negative plate, electrolyte infiltrates that pole piece is more difficult, and battery impedance is bigger, so performance is more after high temperature storage
Difference;Embodiment 3 is smaller than 2 property thickness change of embodiment, and capacity retention ratio and recovery rate higher illustrate additive A N, ADN content all
When being increased to 1%, anode is better protected, and battery impedance also increases without deterioration property, and battery overall performance compares AN, ADN
Content is more stable when being all 0.5%.
As known from Table 2,60 DEG C of equal OK of high temperature circulation test performance of all embodiments, cell thickness change rate are less than 8%,
Capacity retention ratio is more than 80% normal line 80% or more;Capacity retention ratio sequence is that 3 > embodiments of embodiment, 1 > is implemented
The sequence of example 2, thickness growth rate is 2 > embodiments of embodiment, 1 > embodiments 3, and the sequence of internal resistance change rate is 2 > of embodiment real
Apply 1 > embodiments 3 of example.This illustrates that the surface density of positive plate and negative plate is unfavorable for more greatly battery high-temperature cycle performance;Additive
When AN, ADN content are all increased to 1%, when compared to AN, ADN content being all 0.5%, high temperature cyclic performance is more preferable!
After the warm environment storage of 85 DEG C of polymer Li-ion battery of the present invention, battery performance keeps normal;In room temperature and 60
Under DEG C hot environment, battery cycle life is good.
Embodiment described above is not intended to limit the invention, all spirit in the present invention for specifically describing the present invention
With within principle made by any modification, equivalent replacement or improvement etc., should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of high temperature modification polymer Li-ion battery, it is characterised in that:The lithium ion battery includes mainly positive plate, cathode
Piece, porous isolating membrane and electrolyte;
The positive plate divides the percentages to include by quality:Cobalt acid lithium 94~97%, Kynoar (PVDF) 1~2%, carbon are received
Mitron (CNT) 1~2% and carbon black (SP) 1~2%;
The negative plate divides the percentages to include by quality:Artificial graphite 90~96%, carboxycellulose sodium (CMC) 1.5~
2%, butadiene-styrene rubber (SBR) 1.5~2.5% and carbon black (SP) 1~2%;
The porous isolating membrane is mixed painting diaphragm;
The electrolyte is made of lithium salts, carbonate mixture and additive.
2. a kind of high temperature modification polymer Li-ion battery according to claim 1, it is characterised in that:The cobalt of the positive plate
Sour lithium D10 is 10~14 μm, and specific surface area is:0.2~0.3m2/g.
3. a kind of high temperature modification polymer Li-ion battery according to claim 1, it is characterised in that:The people of the negative plate
It is 13~17 μm to make graphite D10, and specific surface area is:0.6~1.0m2/g.
4. a kind of high temperature modification polymer Li-ion battery according to claim 1, it is characterised in that:The porous isolating membrane
Diaphragm is applied to be mixed, basement membrane is polyethylene porous membrane, and basement membrane thickness is 9~16 μm, and mixed coating is alundum (Al2O3) and poly- inclined fluorine
The mixture of ethylene forms, and coating layer thickness is 3 μm, and coating corresponds to positive pole-face.
5. a kind of high temperature modification polymer Li-ion battery according to claim 1, it is characterised in that:The lithium of the electrolyte
Salt is LiPF6, and the content of lithium salts is 1.0~1.2mol/L;
The mass ratio of the carbonate mixture each component is ethylene carbonate (EC):Propene carbonate (PC):Carbonic acid diethyl
Ester (DEC):Ethyl methyl carbonate (EMC):Dimethyl carbonate (DMC)=30~45:5~20:30~45:0~15:0~15;It is described
Carbonate mixture accounts for the 75%~85% of electrolyte gross mass;
The additive level accounts for the 1%~9% of electrolyte gross mass, and the mass ratio of various additives is:Fluoro carbonic acid second
Enester (FEC):Vinylene carbonate (VC):1,3- propane sultone (PS), succinonitrile (AN):Adiponitrile (ADN)=1~3:
1~3:0.2~1:0~1:0~1.
6. the preparation method of high temperature modification polymer Li-ion battery described in claim 1, it is characterised in that:The lithium-ion electric
Pond passes through:Prepare positive plate, prepare negative plate-welding electrode ear-winding-assembly-baking-fluid injection-- two envelope of high temperature ageing-chemical conversion-at
Polymer Li-ion battery is made in type-partial volume process.
7. the preparation method of the high temperature modification polymer Li-ion battery described in claim 6, it is characterised in that:The positive plate is logical
Three steps are crossed to obtain;
First step example cobalt acid lithium in mass ratio:Kynoar (PVDF):Carbon nanotube (CNT):Carbon black (SP)=94~97%:
1~2%:1~2%:1~2% weighs material requested, and anode sizing agent is obtained by blender batch mixing;
First step slurry is coated on using coating machine in aluminum foil current collector by second step, coated face density≤42mg/cm2,
Third walks, using walking pole piece, roll-in density≤4.0g/cm in roll squeezer roll-in3。
8. a kind of preparation method of high temperature modification polymer Li-ion battery according to claim 7, it is characterised in that:It is described
Negative plate is obtained by two steps;
First step example artificial graphite in mass ratio:Carboxycellulose sodium (CMC):Butadiene-styrene rubber (SBR):Carbon black (SP)=90~
96%:1.5~2%:1.5~2.5%:1~2% weighs material requested, and negative electrode slurry is obtained by blender batch mixing;
First step slurry is coated on using coating machine in copper foil current collector by second step, coated face density≤21mg/cm2;
Third step uses and walks pole piece, roll-in density≤1.5g/cm in roll squeezer roll-in3。
9. a kind of preparation method of high temperature modification polymer Li-ion battery according to claim 7, it is characterised in that:It is described
The temperature parameter of high temperature ageing process is 40~50 DEG C, and ageing time is 36~48 hours.
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Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109309233A (en) * | 2018-09-30 | 2019-02-05 | 东莞市三臻科技发展有限公司 | A kind of preparation process of extended-life lithium ion battery |
CN109585950A (en) * | 2018-12-08 | 2019-04-05 | 广东维都利新能源有限公司 | A kind of method for group matching improving polymer Li-ion battery cycle performance |
CN109713360A (en) * | 2018-12-28 | 2019-05-03 | 蜂巢能源科技有限公司 | Energy storage lithium ion battery and its electrolyte and chemical conversion-aging method |
CN110391414A (en) * | 2019-06-19 | 2019-10-29 | 重庆市维都利新能源有限公司 | A kind of high energy density polymer lithium ion battery and preparation method thereof |
CN110474085A (en) * | 2019-08-12 | 2019-11-19 | 深圳市科瑞隆科技有限公司 | High temperature modification high-voltage lithium ion batteries and preparation method thereof |
CN110931881A (en) * | 2019-12-02 | 2020-03-27 | 深圳市宜加新能源科技有限公司 | High-rate charge-discharge polymer lithium ion battery and manufacturing method thereof |
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CN111564656A (en) * | 2019-02-22 | 2020-08-21 | 叶小剑 | Lithium polymer battery and preparation method thereof |
CN111653842A (en) * | 2020-03-20 | 2020-09-11 | 万向一二三股份公司 | Low-self-discharge-rate lithium ion battery formation method and ternary soft-package lithium ion battery |
CN112467209A (en) * | 2019-09-09 | 2021-03-09 | 珠海冠宇电池股份有限公司 | High-voltage lithium ion battery with high and low temperature performance |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090123832A1 (en) * | 2007-11-14 | 2009-05-14 | Sony Corporation | Non-aqueous electrolyte battery |
KR20140147029A (en) * | 2013-06-18 | 2014-12-29 | 가부시키가이샤 지에스 유아사 | Electric storage device and electric storage module |
CN104319418A (en) * | 2014-10-24 | 2015-01-28 | 东莞锂威能源科技有限公司 | High capacity lithium ion battery |
CN104885261A (en) * | 2012-12-26 | 2015-09-02 | 三洋电机株式会社 | Negative electrode for non-aqueous electrolyte secondary battery and non-aqueous electrolyte secondary battery using same |
CN105932228A (en) * | 2014-01-28 | 2016-09-07 | 泉州劲鑫电子有限公司 | Preparation method for high-capacity lithium ion battery positive electrode tab |
CN106450289A (en) * | 2016-08-17 | 2017-02-22 | 中信大锰矿业有限责任公司大新锰矿分公司 | High-voltage lithium cobalt oxide positive electrode material and preparation method therefor |
CN106784997A (en) * | 2017-01-19 | 2017-05-31 | 西安瑟福能源科技有限公司 | A kind of emergency starting ultra-high magnification lithium ion battery |
CN107275553A (en) * | 2017-05-27 | 2017-10-20 | 东莞锂威能源科技有限公司 | A kind of polymer Li-ion battery and preparation method thereof |
CN107742723A (en) * | 2017-08-31 | 2018-02-27 | 新余英泰能科技有限公司 | A kind of preparation method of military super-low-temperature lithium-ion cell |
-
2018
- 2018-05-21 CN CN201810485668.8A patent/CN108598556B/en active Active
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090123832A1 (en) * | 2007-11-14 | 2009-05-14 | Sony Corporation | Non-aqueous electrolyte battery |
CN104885261A (en) * | 2012-12-26 | 2015-09-02 | 三洋电机株式会社 | Negative electrode for non-aqueous electrolyte secondary battery and non-aqueous electrolyte secondary battery using same |
KR20140147029A (en) * | 2013-06-18 | 2014-12-29 | 가부시키가이샤 지에스 유아사 | Electric storage device and electric storage module |
CN105932228A (en) * | 2014-01-28 | 2016-09-07 | 泉州劲鑫电子有限公司 | Preparation method for high-capacity lithium ion battery positive electrode tab |
CN104319418A (en) * | 2014-10-24 | 2015-01-28 | 东莞锂威能源科技有限公司 | High capacity lithium ion battery |
CN106450289A (en) * | 2016-08-17 | 2017-02-22 | 中信大锰矿业有限责任公司大新锰矿分公司 | High-voltage lithium cobalt oxide positive electrode material and preparation method therefor |
CN106784997A (en) * | 2017-01-19 | 2017-05-31 | 西安瑟福能源科技有限公司 | A kind of emergency starting ultra-high magnification lithium ion battery |
CN107275553A (en) * | 2017-05-27 | 2017-10-20 | 东莞锂威能源科技有限公司 | A kind of polymer Li-ion battery and preparation method thereof |
CN107742723A (en) * | 2017-08-31 | 2018-02-27 | 新余英泰能科技有限公司 | A kind of preparation method of military super-low-temperature lithium-ion cell |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109309233A (en) * | 2018-09-30 | 2019-02-05 | 东莞市三臻科技发展有限公司 | A kind of preparation process of extended-life lithium ion battery |
CN109585950A (en) * | 2018-12-08 | 2019-04-05 | 广东维都利新能源有限公司 | A kind of method for group matching improving polymer Li-ion battery cycle performance |
CN109713360A (en) * | 2018-12-28 | 2019-05-03 | 蜂巢能源科技有限公司 | Energy storage lithium ion battery and its electrolyte and chemical conversion-aging method |
CN111564656A (en) * | 2019-02-22 | 2020-08-21 | 叶小剑 | Lithium polymer battery and preparation method thereof |
CN110391414A (en) * | 2019-06-19 | 2019-10-29 | 重庆市维都利新能源有限公司 | A kind of high energy density polymer lithium ion battery and preparation method thereof |
CN110474085A (en) * | 2019-08-12 | 2019-11-19 | 深圳市科瑞隆科技有限公司 | High temperature modification high-voltage lithium ion batteries and preparation method thereof |
CN112467209A (en) * | 2019-09-09 | 2021-03-09 | 珠海冠宇电池股份有限公司 | High-voltage lithium ion battery with high and low temperature performance |
CN111029566A (en) * | 2019-11-18 | 2020-04-17 | 淮北市锂动芯新能源科技有限公司 | Quick-charging flexible-package lithium ion battery |
CN111224067A (en) * | 2019-11-18 | 2020-06-02 | 淮北市锂动芯新能源科技有限公司 | Flexible package lithium ion battery with high temperature and rate performance and preparation method thereof |
CN110931881A (en) * | 2019-12-02 | 2020-03-27 | 深圳市宜加新能源科技有限公司 | High-rate charge-discharge polymer lithium ion battery and manufacturing method thereof |
CN111193071A (en) * | 2020-01-09 | 2020-05-22 | 重庆市紫建电子股份有限公司 | Electrolyte of high-voltage quick-charging lithium ion battery and lithium ion battery |
CN111653842A (en) * | 2020-03-20 | 2020-09-11 | 万向一二三股份公司 | Low-self-discharge-rate lithium ion battery formation method and ternary soft-package lithium ion battery |
CN111653842B (en) * | 2020-03-20 | 2021-08-13 | 万向一二三股份公司 | Low-self-discharge-rate lithium ion battery formation method and ternary soft-package lithium ion battery |
CN111554857A (en) * | 2020-05-13 | 2020-08-18 | 深圳润丰新能源有限公司 | Novel lithium battery and manufacturing method thereof |
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