CN202737038U - Polymer lithium ion battery - Google Patents
Polymer lithium ion battery Download PDFInfo
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- CN202737038U CN202737038U CN201220315943XU CN201220315943U CN202737038U CN 202737038 U CN202737038 U CN 202737038U CN 201220315943X U CN201220315943X U CN 201220315943XU CN 201220315943 U CN201220315943 U CN 201220315943U CN 202737038 U CN202737038 U CN 202737038U
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- polymer
- ion battery
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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
Abstract
The utility model discloses a polymer lithium ion battery. The polymer lithium ion battery comprises a battery case and a naked cell arranged in the battery case, wherein the naked cell includes a positive electrode plate, a negative electrode plate, and a diaphragm between the positive electrode plate and the negative electrode plate; the negative electrode plate includes a negative current collector and a negative active layer on the negative current collector; the negative active layer is a silicon carbon active layer; both sides of the negative electrode plate are coated with a polymer membrane for restricting volume expansion of the silicon carbon active layer in a charge-discharge process; and both sides of the positive electrode plate are coated with the polymer membrane. The polymer lithium ion battery provided by the utility model is improved in volume energy density, and can prevent the silicon carbon active layer from powdering or dropping from the negative current collector in the charge-discharge process of the negative electrode plate containing the silicon carbon active layer, thereby improving cycle performance of the polymer lithium ion battery.
Description
Technical field
The utility model relates to the battery technology field, relates in particular to a kind of polymer Li-ion battery.
Background technology
Because lithium ion battery has voltage height, memory-less effect and volume energy density high, so that it is widely used at portable electronics (smart mobile phone, notebook computer etc.).And along with the development of smart mobile phone, so that more and more higher to the requirement of lithium ion battery, especially had higher requirement in fail safe and the volume energy density aspect of lithium ion battery.
Aspect the fail safe that improves lithium ion battery, adopt at present polymer Li-ion battery to realize.Because there is not the problem of leakage in it, and can suppress the side reaction between electrolyte solvent and the battery plus-negative plate, so that polymer Li-ion battery has obtained very large improvement aspect fail safe.
Aspect the volume energy density that improves polymer Li-ion battery, at present, mainly contain following two kinds of methods: (1) adopts novel positive electrode.The positive electrode of present commercial polymer Li-ion battery mainly contains cobalt acid lithium, ternary material, LiMn2O4, LiFePO4 and binary material etc.In these materials, cobalt acid lithium has the highest volume energy density, although cobalt has toxicity, and its reserves in the whole world are limited, but also do not occur the positive electrode than the higher volume energy density of cobalt acid lithium at present, thereby have certain obstacle so that improve the volume energy density of polymer Li-ion battery by changing positive electrode; (2) adopt novel negative material.Existing polymer Li-ion battery mainly is to adopt graphite as its negative active core-shell material, yet when adopting graphite as its negative active core-shell material, the actual gram specific capacity of graphite is close to its theoretical value (372mAh/g).Along with the development of science and technology, some novel negative materials have appearred at present, silicon for example, its energy density (its gram specific capacity is 4200mAh/g) far is more than the energy density (its gram specific capacity is 372mAh/g) of above-mentioned graphite.Therefore, can improve the volume energy density of polymer Li-ion battery by adopting this novel negative material of silicon.
Although the occurring in nature silicon resource is very abundant, can be used as a kind of Novel anode material that has the polymer Li-ion battery of development prospect, but when adopting silicon as the negative active core-shell material of polymer Li-ion battery, silicon can produce huge change in volume (rate of change surpasses 300%) in the process of embedding/take off lithium, because its huge change in volume, so that the structure of the negative active core-shell material of polymer Li-ion battery is caved in rapidly, efflorescence or come off from negative current collector, cause electronics not shift rapidly, so that the chemical property of polymer Li-ion battery negative active core-shell material sharply descends, thereby affect the overall performance of polymer Li-ion battery.
The utility model content
Main purpose of the present utility model provides a kind of polymer Li-ion battery, when being intended to improve the volume energy density of polymer Li-ion battery, can avoid again the polymer Li-ion battery negative plate the silicon-carbon active layer efflorescence or come off from negative current collector, thereby improve the cycle performance of polymer Li-ion battery.
In order to achieve the above object, the utility model proposes a kind of polymer Li-ion battery, this polymer Li-ion battery comprises battery container and is positioned at the naked battery core of battery container, described naked battery core comprises positive plate, negative plate and the barrier film between positive plate and negative plate, described negative plate comprises negative current collector and the negative electrode active layer that is positioned on the negative current collector, described negative electrode active layer is the silicon-carbon active layer, and the two sides of described negative plate is coated with for limiting described silicon-carbon active layer and produces the polymer film of volumetric expansion at charge and discharge process.
Preferably, the two sides of described positive plate also is coated with described polymer film.
Preferably, the polymer in the described polymer film is the copolymer of polyvinylidene fluoride and hexafluoropropylene.
Preferably, the thickness of described polymer film is 2-8um.
Preferably, the negative current collector of described negative plate is Copper Foil.
Preferably, described positive plate comprises plus plate current-collecting body and the anodal active layer that is positioned on the plus plate current-collecting body, and described plus plate current-collecting body is aluminium foil, and described anodal active layer is cobalt acid lithium or nickel cobalt lithium aluminate binary material active layer.
Preferably, described barrier film is the TPO barrier film, and the thickness of described barrier film is 8-40um.
Preferably, described battery container is square aluminum plastic film housing.
The polymer Li-ion battery that the utility model proposes because the negative electrode active layer of its negative plate is the silicon-carbon active layer, thereby has improved the volume energy density of polymer Li-ion battery; And owing to be coated with a polymer film on the two sides of negative plate, so that negative plate and barrier film be bonded together by polymer film, thereby the silicon-carbon active layer that has limited negative plate produces volumetric expansion in the process that discharges and recharges; And because polymer film has certain plasticity, so that the stress that its silicon-carbon active layer that can cushion negative plate produces because of its volumetric expansion in the process that discharges and recharges, therefore, the utility model has avoided the negative plate in the polymer Li-ion battery to cause the efflorescence of its silicon-carbon active layer or its silicon-carbon active layer coming off from the negative current collector in the process that discharges and recharges, thereby has improved the cycle performance of polymer Li-ion battery.
Description of drawings
Fig. 1 is the structural representation of naked battery core in the preferred embodiment of the utility model polymer Li-ion battery.
Fig. 2 is the schematic flow sheet of the manufacture method preferred embodiment of the utility model polymer Li-ion battery.
Fig. 3 is the high rate performance test schematic diagram of the utility model polymer Li-ion battery preferred embodiment.
Fig. 4 is the normal temperature loop test schematic diagram of the utility model polymer Li-ion battery preferred embodiment.
The realization of the utility model purpose, functional characteristics and advantage are described further with reference to accompanying drawing in connection with embodiment.
Embodiment
Further specify the technical solution of the utility model below in conjunction with Figure of description and specific embodiment.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
Fig. 1 is the structural representation of naked battery core in the preferred embodiment of the utility model polymer Li-ion battery.
With reference to Fig. 1, the naked battery core in the utility model polymer Li-ion battery respectively is polymer film 1, anodal active layer 2, plus plate current-collecting body 3, anodal active layer 2, polymer film 1, barrier film 4, polymer film 1, negative electrode active layer 5, negative current collector 6, negative electrode active layer 5, polymer film 1 from top to bottom.Wherein, plus plate current-collecting body 3 consists of positive plates with the anodal active layer 2 that is positioned on the plus plate current-collecting body 3; Negative current collector 6 and the negative electrode active layer 5 that is positioned on the negative current collector 6 consist of negative plate.The negative electrode active layer 5 of negative plate is the silicon-carbon active layer among the utility model embodiment, and the two sides of negative plate (being the surface of negative electrode active layer 5) is coated with polymer film 1, so that negative plate and barrier film 4 are bonded together by polymer film 1, thereby the negative electrode active layer 5(that has limited negative plate is above-mentioned silicon-carbon active layer) in the process that discharges and recharges, produce volumetric expansion, and because polymer film 1 has certain plasticity, so that the stress that its silicon-carbon active layer that can cushion negative plate produces because of its volumetric expansion in the process that discharges and recharges, come off with the efflorescence of the silicon-carbon active layer of avoiding negative plate or from its negative current collector 6.
In addition, the two sides of the positive plate among the utility model embodiment also is coated with polymer film 1, so that the performance of the performance of positive plate and negative plate is complementary.
Wherein, the polymer in the above-mentioned polymer film 1 is the copolymer (PVDF-HFP) of polyvinylidene fluoride and hexafluoropropylene.Because polyvinylidene fluoride (PVDF) has outstanding film forming characteristics, and it has higher thermal stability and chemical stability, in addition, polyvinylidene fluoride (PVDF) also has higher dielectric constant and lower glass transition temperature, thereby is conducive to its dissociating to lithium salts.But, because the molecular symmetry of polyvinylidene fluoride (PVDF) reaches well the structural regularity height, thereby cause it that phenomenon of crystallization easily occurs, thereby be unfavorable for that it is to the conduction of lithium ion.The utility model embodiment adopts the copolymer (PVDF-HFP) of polyvinylidene fluoride and hexafluoropropylene as the polymeric material of above-mentioned polymer film 1, it mainly is symmetry and the regularity thereof that destroys polyvinylidene fluoride (PVDF) molecular structure by hexafluoropropylene HFP, to reduce its glass transition temperature and degree of crystallinity thereof, thereby improve its sub-chain motion ability, thereby the final purpose that realizes improving its lithium ion conducting rate.And (C-F) has the ability of strong attract electrons, so that polyvinylidene fluoride (PVDF) has stronger electrochemical oxidation resistive material ability because the carbon-fluorine bond functional group in the copolymer (PVDF-HFP) of polyvinylidene fluoride and hexafluoropropylene.
Concrete, the manufacturing process of above-mentioned polymer film 1 is as follows: at first the copolymer (PVDF-HFP) with polyvinylidene fluoride and hexafluoropropylene is dissolved in the solvent, obtain polymer paste, then the mode by blade coating, spraying, immersion or printing is coated on the two sides (being the surface of above-mentioned anodal active layer 2) of positive plate with polymer paste and contains the two sides (being the surface of above-mentioned negative electrode active layer 5) of negative plate, forms polymer film 1.
Wherein, the ratio of hexafluoropropylene (HFP) in polyvinylidene fluoride (PVDF) main chain is 8%-25% in the above-mentioned polymer (copolymer of polyvinylidene fluoride and hexafluoropropylene (PVDF-HFP)), and above-mentioned solvent is one or more in acetone, 1-METHYLPYRROLIDONE, oxolane, dimethyl sulfoxide (DMSO), methylethylketone and the ethyl acetate.
The thickness of the polymer film 1 among the utility model embodiment is 2-8um.The thickness of barrier film 4 is 8-40um, is preferably 12um, and barrier film 4 is the TPO barrier film.The negative current collector 6 of negative plate is Copper Foil.The plus plate current-collecting body 3 of positive plate is aluminium foil, and the active material of the anodal active layer 2 of positive plate can be cobalt acid lithium (LiCoO
2) and nickel cobalt lithium aluminate binary material (Li (Ni
0.8Co
0.15Al
0.05) O
2) in a kind of or by cobalt acid lithium (LiCoO
2) and nickel cobalt lithium aluminate binary material (Li (Ni
0.8Co
0.15Al
0.05) O
2) mix the mixture of rear gained with arbitrary proportion.
The anodal active layer 2 of positive plate is cobalt acid lithium active layer among the utility model embodiment, activity substance content is that 85.0-98.5%, conductive agent content are that 1.0-5.0%, binder content are 0.5-10.0%, and the concrete prescription of this cobalt acid lithium active layer is: cobalt acid lithium (LiCoO
2) (active material): Super P(conductive agent): polyvinylidene fluoride (PVDF) (binding agent)=95.6:1.8:2.6;
The negative electrode active layer 5(of negative plate is above-mentioned silicon-carbon active layer) prescription be: the silicon-carbon activity substance content is that 80.0-99.5%, conductive agent content are that 0.0-10.0%, binder content are that 0.5-10.0%, dispersant are 0.0-5.0%, and the concrete prescription of negative electrode active layer is silicon-carbon (SiC) (active material) in the present embodiment: Super P(conductive agent): butadiene-styrene rubber (SBR) (binding agent): sodium carboxymethylcellulose (CMC) (dispersant)=95.5:1.5:1.5:1.5.
The length of the polymer Li-ion battery in the present embodiment is 61.5mm, and wide is 42.0mm, and thick is 4.5mm, and its capacity is 2000mAh, and its internal resistance is 40m Ω, and its battery container is square aluminum plastic film housing.
The utility model polymer Li-ion battery because the negative electrode active layer of its negative plate is the silicon-carbon active layer, thereby has improved the volume energy density of the utility model polymer Li-ion battery; And owing to be coated with a polymer film on the two sides of negative plate, so that negative plate and barrier film be bonded together by polymer film, thereby the silicon-carbon active layer that has limited negative plate produces volumetric expansion in the process that discharges and recharges; And because polymer film has certain plasticity, so that the stress that its silicon-carbon active layer that can cushion negative plate produces because of its volumetric expansion in the process that discharges and recharges, therefore, the negative plate that the utility model has avoided containing in the polymer Li-ion battery silicon-carbon active layer is the efflorescence that causes its silicon-carbon active layer in the process that is discharging and recharging or its silicon-carbon active layer coming off from its negative current collector, thereby improved the cycle performance of polymer Li-ion battery.
Fig. 2 is the schematic flow sheet of the manufacture method preferred embodiment of the utility model polymer Li-ion battery.
With reference to Fig. 2, the manufacture method of the utility model polymer Li-ion battery may further comprise the steps:
Step S01: preparation positive plate and the negative plate that contains the silicon-carbon active layer;
Positive plate in the utility model polymer Li-ion battery comprises plus plate current-collecting body and anodal active layer, and wherein, plus plate current-collecting body is aluminium foil, and the active material in the anodal active layer can be cobalt acid lithium (LiCoO
2) and nickel cobalt lithium aluminate binary material (Li (Ni
0.8Co
0.15Al
0.05) O
2) in a kind of or by cobalt acid lithium (LiCoO
2) and nickel cobalt lithium aluminate binary material (Li (Ni
0.8Co
0.15Al
0.05) O
2) mixing the mixture of rear gained with arbitrary proportion, the anodal active layer in the present embodiment is cobalt acid lithium active layer, the concrete prescription of this cobalt acid lithium active layer is: cobalt acid lithium (LiCoO
2) (active material): Super P(conductive agent): polyvinylidene fluoride (PVDF) (binding agent)=95.6:1.8:2.6;
Negative plate in the utility model polymer Li-ion battery comprises negative current collector and negative electrode active layer, wherein, negative current collector is Copper Foil, active material in the negative electrode active layer is silicon-carbon (SiC), and the concrete prescription of negative electrode active layer is: silicon-carbon (SiC) (active material): Super P(conductive agent): butadiene-styrene rubber (SBR) (binding agent): sodium carboxymethylcellulose (CMC) (dispersant)=95.5:1.5:1.5:1.5.
The concrete manufacturing process of the positive plate in the utility model polymer Li-ion battery is as follows:
At first, according to the formula rate of above-mentioned anodal active layer, with cobalt acid lithium (LiCoO
2) (active material), Super P(conductive agent) and corresponding solvent put into the double-planet mixer, by the double-planet mixer it is stirred, then add polyvinylidene fluoride (PVDF) (binding agent) and carry out low rate mixing, obtain the slurry (viscosity of control slurry is 2000-7000 mPaS) of anodal active layer;
Secondly, the slurry of anodal active layer is coated on the surface of plus plate current-collecting body (aluminium foil), obtains positive plate;
At last, by roll squeezer with whole positive plate roll-in to certain thickness.
The concrete manufacturing process of the negative plate in the utility model polymer Li-ion battery is as follows:
At first, formula rate according to above-mentioned negative electrode active layer, with silicon-carbon (SiC) (active material), Super P(conductive agent), sodium carboxymethylcellulose (CMC) (dispersant) and corresponding solvent put into the double-planet mixer, by the double-planet mixer it is stirred, then add butadiene-styrene rubber (SBR) (binding agent) and carry out low rate mixing, obtain the slurry (viscosity of control slurry is 750 ~ 2000 mPaS) of negative electrode active layer;
Secondly, the slurry of negative electrode active layer is coated on the surface of negative current collector (aluminium foil), obtains negative plate;
At last, by roll squeezer with whole negative plate roll-in to certain thickness.
Step S02: on the two sides of positive plate and the two sides that contains the negative plate of silicon-carbon active layer all apply the one layer of polymeric film;
This step is specially:
At first with polymer dissolution in solvent, obtain polymer paste;
Then the mode by blade coating, spraying, immersion or printing is coated on the two sides of positive plate with polymer paste and contains the two sides of the negative plate of silicon-carbon active layer, forms polymer film.
Wherein, above-mentioned polymer is the copolymer of polyvinylidene fluoride and hexafluoropropylene, and in the copolymer of this polyvinylidene fluoride and hexafluoropropylene, the ratio of hexafluoropropylene in the polyvinylidene fluoride main chain is 8%-25%; Above-mentioned solvent is one or more in acetone, 1-METHYLPYRROLIDONE, oxolane, dimethyl sulfoxide (DMSO), methylethylketone and the ethyl acetate.The thickness of polymer film is 2-8um.
Step S03: barrier film is set in the positive plate that applied polymer film and the centre that applied the negative plate of polymer film, and by reeling or the mode of lamination is made naked battery core with the described negative plate that applied positive plate, the barrier film of polymer film and applied polymer film, and described naked battery core is packaged in one contains in the battery container of opening;
Wherein, the barrier film that adopts in the present embodiment is the TPO barrier film, and its thickness is 12um.The battery container that adopts in the present embodiment is square aluminum plastic film housing (namely adopting aluminum plastic film that naked battery core is packed).
Step S04: in drying shed from the opening of described battery container toward described battery container in filling liquid electrolyte, and seal the opening of described battery container, obtain the polymer Li-ion battery precursor;
Be conventional liquid electrolyte toward the interior liquid electrolyte of injecting of battery container in the present embodiment, the lithium salts of this liquid electrolyte is lithium hexafluoro phosphate (LiPF
6), LiBF4 (LiBF
4), di-oxalate lithium borate (LiBOB) etc., the nonaqueous solvents of this liquid electrolyte is ethylene carbonate (EC), diethyl carbonate (DEC), propene carbonate (PC), methyl ethyl carbonate (EMC) etc.Preferably, the employed liquid electrolyte of present embodiment is that concentration is the lithium hexafluoro phosphate (LiPF of 1mol/L
6) solution, its nonaqueous solvents is the mixed solvent of ethylene carbonate (EC), diethyl carbonate (DEC) and propene carbonate (PC), wherein, ethylene carbonate (EC): diethyl carbonate (DEC): propene carbonate (PC)=3:3:3.
Step S05: described polymer Li-ion battery precursor is heated pressurization, it is plastified into polymer Li-ion battery;
Concrete, heat pressurization at the polymer Li-ion battery precursor to step S04 gained, when it is plastified into polymer Li-ion battery, the selection of its pressure is extremely important, because pressure is too little, the good interface of polymer Li-ion battery will be not enough to form, and pressure is too large, will increase again the risk of polymer lithium ion battery internal short circuit; Simultaneously, the selection of temperature is also very important, because temperature is too low, so that the liquid electrolyte of injecting forms gel, and temperature is too high, will cause again the vaporization of liquid electrolyte solvent with not enough.The utility model embodiment is when plastifying the polymer Li-ion battery precursor, and selected pressure limit is 100kPa ~ 4000kPa, and selected temperature range is 60 ~ 100 ℃.Being about to the polymer Li-ion battery precursor, to place temperature be that 60 ~ 100 ℃ and pressure are under the environment of 100kPa-4000kPa it to be heated pressurization, and it is plastified into polymer Li-ion battery.Preferably, present embodiment is when plastifying above-mentioned polymer Li-ion battery precursor, and selected pressure can be 1000kPa, 2500kPa or 3000kPa, and selected temperature can be 70 ℃, 80 ℃ or 85 ℃.
Step S06: described polymer Li-ion battery is changed into.
Forming technology in this step is the forming technology that adopts in the existing conventional polymer lithium ion battery manufacturing technology, repeats no more herein.
Fig. 3 is the high rate performance test schematic diagram of the utility model polymer Li-ion battery preferred embodiment.
Because the capacity of the polymer Li-ion battery among the utility model embodiment is 2000mAh, it is long to be 61.5mm, wide is 42.0mm, height is 4.5mm, therefore, the volume energy density of the utility model polymer Li-ion battery is about 619Wh/L, has improved 30% than the volume energy density that has conventional lithium ion battery now.With reference to Fig. 3, the capacity that polymer Li-ion battery among curve 1 expression the utility model embodiment is emitted during with the 0.2C multiplying power discharging, the capacity of being emitted when curve 2 represents with the 0.5C multiplying power discharging, the capacity of being emitted when curve 3 represents with the 1.0C multiplying power discharging, the capacity of being emitted when curve 4 represents with the 2.0C multiplying power discharging.Because the capacity of the polymer Li-ion battery among the utility model embodiment is 2000mAh, therefore, as can be seen from this figure, the utility model polymer Li-ion battery is during with the multiplying power discharging of 0.2C, its discharge capacity is 100%, during with the multiplying power discharging of 0.5C, its discharge capacity is 99%, during with the multiplying power discharging of 1.0C, its discharge capacity is 97.6%, and during with the multiplying power discharging of 2.0C, its discharge capacity is 90.2%, be that the utility model polymer Li-ion battery has shown good high rate performance, it can satisfy smart mobile phone and notebook computer fully to the demand of its required battery performance.
Fig. 4 is the normal temperature loop test schematic diagram of the utility model polymer Li-ion battery preferred embodiment.
With reference to Fig. 4, when the utility model polymer Li-ion battery discharged and recharged with the multiplying power of 1.0C, behind its cycle charge-discharge through 500 weeks, the conservation rate of its capacity was 87%, and namely the utility model polymer Li-ion battery has shown good cycle performance.
The above only is preferred embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (8)
1. polymer Li-ion battery, comprise battery container and be positioned at the naked battery core of battery container, described naked battery core comprises positive plate, negative plate and the barrier film between positive plate and negative plate, described negative plate comprises negative current collector and the negative electrode active layer that is positioned on the negative current collector, it is characterized in that, described negative electrode active layer is the silicon-carbon active layer, and the two sides of described negative plate is coated with polymer film.
2. polymer Li-ion battery according to claim 1 is characterized in that, the two sides of described positive plate also is coated with described polymer film.
3. polymer Li-ion battery according to claim 1 and 2 is characterized in that, the polymer in the described polymer film is the copolymer of polyvinylidene fluoride and hexafluoropropylene.
4. polymer Li-ion battery according to claim 3 is characterized in that, the thickness of described polymer film is 2-8um.
5. polymer Li-ion battery according to claim 4 is characterized in that, the negative current collector of described negative plate is Copper Foil.
6. polymer Li-ion battery according to claim 5, it is characterized in that, described positive plate comprises plus plate current-collecting body and the anodal active layer that is positioned on the plus plate current-collecting body, and described plus plate current-collecting body is aluminium foil, and described anodal active layer is cobalt acid lithium or nickel cobalt lithium aluminate binary material active layer.
7. polymer Li-ion battery according to claim 1 is characterized in that, described barrier film is the TPO barrier film, and the thickness of described barrier film is 8-40um.
8. polymer Li-ion battery according to claim 1 is characterized in that, described battery container is square aluminum plastic film housing.
Priority Applications (1)
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|---|---|---|---|
| CN201220315943XU CN202737038U (en) | 2012-07-02 | 2012-07-02 | Polymer lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220315943XU CN202737038U (en) | 2012-07-02 | 2012-07-02 | Polymer lithium ion battery |
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| CN202737038U true CN202737038U (en) | 2013-02-13 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102769149A (en) * | 2012-07-02 | 2012-11-07 | 深圳市海太阳实业有限公司 | Preparation method of polymer lithium ion battery and polymer lithium ion battery |
| CN109285985A (en) * | 2017-07-20 | 2019-01-29 | 天津凯普瑞特新能源科技有限公司 | A kind of PVDP lithium battery diaphragm |
| CN112635713A (en) * | 2021-01-12 | 2021-04-09 | 天津市捷威动力工业有限公司 | Lithium ion battery pole piece and preparation method thereof |
| CN113196531A (en) * | 2020-03-18 | 2021-07-30 | 宁德新能源科技有限公司 | Electrode assembly and battery having the same |
| WO2023192432A1 (en) * | 2022-04-01 | 2023-10-05 | Aspen Aerogels, Inc. | Compositions and methods for preparing battery electrodes |
-
2012
- 2012-07-02 CN CN201220315943XU patent/CN202737038U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102769149A (en) * | 2012-07-02 | 2012-11-07 | 深圳市海太阳实业有限公司 | Preparation method of polymer lithium ion battery and polymer lithium ion battery |
| CN102769149B (en) * | 2012-07-02 | 2016-01-06 | 深圳市海太阳实业有限公司 | The manufacture method of polymer Li-ion battery and polymer Li-ion battery |
| CN109285985A (en) * | 2017-07-20 | 2019-01-29 | 天津凯普瑞特新能源科技有限公司 | A kind of PVDP lithium battery diaphragm |
| CN113196531A (en) * | 2020-03-18 | 2021-07-30 | 宁德新能源科技有限公司 | Electrode assembly and battery having the same |
| CN113196531B (en) * | 2020-03-18 | 2022-11-29 | 宁德新能源科技有限公司 | Electrode assembly and battery having the same |
| CN112635713A (en) * | 2021-01-12 | 2021-04-09 | 天津市捷威动力工业有限公司 | Lithium ion battery pole piece and preparation method thereof |
| WO2023192432A1 (en) * | 2022-04-01 | 2023-10-05 | Aspen Aerogels, Inc. | Compositions and methods for preparing battery electrodes |
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