CN205335383U - Sour lithium power battery of electric capacity type cobalt - Google Patents

Sour lithium power battery of electric capacity type cobalt Download PDF

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Publication number
CN205335383U
CN205335383U CN201520967939.5U CN201520967939U CN205335383U CN 205335383 U CN205335383 U CN 205335383U CN 201520967939 U CN201520967939 U CN 201520967939U CN 205335383 U CN205335383 U CN 205335383U
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layer
plate
positive
positive plate
capacitor type
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李朝
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/13Energy storage using capacitors
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50Manufacturing or production processes characterised by the final manufactured product

Abstract

The utility model discloses a sour lithium power battery of electric capacity type cobalt, including positive plate, negative pole piece and diaphragm, mutual separating of positive plate, negative pole piece and diaphragm is convoluteed or range upon range of design, the diaphragm sets up between positive plate and negative pole piece, the positive plate is electric capacity type positive plate, electric capacity type positive plate is the three -layer composite structure, anodal pole piece includes the anodal layer of ultracapacitor system, the anodal layer of lithium ion battery and anodal collection fluid layer, anodal layer of ultracapacitor system and the anodal layer of lithium ion battery coat at positive pole collection fluidic female side and sunny side respectively, the anodal layer of ultracapacitor system is active carbon electrode material layer, the anodal layer of lithium ion battery is the sour lithium cathode material layer of cobalt, the anode material layer is the mixture of natural graphite, artificial graphite, soft carbon and hard carbon, soft carbon and hard carbon mass fraction are the 50 -95% of mixture. The utility model discloses a sour lithium power battery of electric capacity type cobalt has that the equipment suitability is strong, the performance is excellent, quality wen di, processing is convenient, production efficiency is high and low cost's characteristics.

Description

A kind of capacitor type cobalt acid lithium dynamical battery
Technical field
This utility model relates to technical field of lithium ion, is specially a kind of capacitor type cobalt acid lithium dynamical battery。
Background technology
Along with the information-based and intelligentized high speed development of modern society, and environmental pollution and energy shortage are day by day serious, and society is more and more higher to capacity and the demanded power output of electrical storage device, and lithium ion battery and capacitor etc. become current research focus。Lithium ion battery has the advantages such as energy density height, self-discharge rate be low, but high rate performance is undesirable, power density is relatively low, and the voltage range of lithium ion battery is between 3.0~4.1V, during higher than 4.1V, cell positive material and electrolyte are unstable, oxidizable, and negative terminal surface is easily analysed lithium and formed Li dendrite, brings potential safety hazard。The advantage such as though capacitor has power density height, have extended cycle life, energy density is relatively low, and also self-discharge rate is bigger。
In order to meet the demand of high-energy-density, high output characteristic, in recent years, electrical storage device that the electric power storage principle of lithium ion battery and capacitor combined, that be referred to as hybrid capacitor is noticeable。But, at present the coupling of lithium ion battery Yu capacitor is confined to more lithium ion battery and activated carbon double-layer electrolytic capacitor coupling, generally absorbent charcoal material is joined in the active material of lithium ion battery, as Chinese patent application CN103021671A proposes a kind of capacitor of lithium ion battery, through adding activated carbon in positive electrode active materials and adding soft carbon or hard carbon formation electric double layer activated carbon capacitor in negative active core-shell material, make its capacitor of lithium ion battery prepared have lithium ion battery high-energy-density and the feature of capacitor height highway simultaneously, temperature range and the voltage range of its use are widened, there is excellent electricity (electric charge) conservation rate。But, in its technical scheme, activated carbon accounts for the 5.0%~50.0% of positive electrode active materials volume percent, and the A class material such as soft carbon or hard carbon accounts for the 50.0~95.0% of negative active core-shell material volume percent, seriously reduces the energy density of lithium ion battery;And, the such as A class material such as soft carbon or hard carbon is added negative material, activated carbon adds in positive electrode, namely need to add in the mixed slurry process of positive pole and negative pole in the course of processing, not only difficulty of processing is unfavorable for more greatly the lifting of production efficiency, and cause many uncertain factors to both positive and negative polarity pulping process, product quality depends critically upon the uniformity of mixed slurry, and quality risk is too high。
Meanwhile, cobalt acid lithium is as the positive electrode of lithium ion battery commercial applications the earliest, there is Stability Analysis of Structures, Capacity Ratio exsertile feature high, comprehensive, but owing to gold its poor stability of existence of cobalt, cost are very high, directly constrain the popularization and application in field of lithium ion battery of the cobalt acid lithium。
Utility model content
The purpose of this utility model is to provide a kind of capacitor type cobalt acid lithium dynamical battery, have that the equipment suitability is strong, excellent performance, stay in grade, the feature that easy to process, production efficiency is high and with low cost。
This utility model can be achieved through the following technical solutions:
The utility model discloses a kind of capacitor type cobalt acid lithium dynamical battery, including positive plate, negative plate and barrier film, described positive plate, negative plate and the spaced winding of barrier film or stack design, described barrier film is arranged between positive plate and negative plate, described positive plate is capacitor type positive plate, described capacitor type positive plate is three-layer composite structure, described anode pole piece includes supercapacitor positive electrode layer, lithium ion cell positive layer and plus plate current-collecting body layer, described supercapacitor positive electrode layer and lithium ion cell positive layer are respectively coated on the back and the sunny side of plus plate current-collecting body, described supercapacitor positive electrode layer is active carbon electrode material layer, described lithium ion cell positive layer is lithium cobaltate cathode material layer, described negative electrode material layer is native graphite, Delanium, the mixture of soft carbon and hard carbon, described soft carbon and hard carbon mass fraction are the 50-95% of mixture。
Described supercapacitor positive electrode layer and lithium ion cell positive layer misplace in winding or stacking and are separated by, it is achieved thereby that lithium-ion-power cell concordance of structure when winding or stacking, it is ensured that the concordance of battery performance。
The spaced winding of described positive plate, negative plate and barrier film forms cylindrical-shaped structure, meets the production requirement of cylindrical steel housing battery, particularly the needs of capacity small column battery production design。
Further, the spaced stratification square structure of described positive plate, negative plate and barrier film, meet the production requirement of square soft-package battery, particularly power-type lithium-ion-power cell produces the needs of design。
Further, described plus plate current-collecting body layer is aluminium foil, and aluminium foil is as conventional plus plate current-collecting body, and processing technique is ripe, it is simple to the debugging of positive electrode coating and processing。
Further, described barrier film is PE barrier film, PP barrier film or PE/PP composite diaphragm, it is possible to select the barrier film of unlike material and thickness according to actual battery types。
Further, described negative plate is three-layer composite structure, and described negative plate includes negative current collector layer and is coated in the negative electrode material layer of negative current collector layer。The structure of negative plate is conventional structure, it is possible to directly utilizes existing technique and produces, it is provided that the versatility of production, reduces fabrication design cost。
Further, described capacitor type cobalt acid lithium dynamical battery also includes lithium-ion battery electrolytes, described lithium-ion battery electrolytes is made up of solvent, electrolytic salt and additive, wherein solvent is grouped into by dimethyl carbonate (DMC), diethyl carbonate (DEC), Ethyl methyl carbonate (EMC), ethylene carbonate (EC) four-tuple, its volume basis is as follows: DMC accounts for 20%~30%, DEC accounts for 20%~30%, and EMC accounts for 10%~20%, and EC accounts for 25%~50%。The electrolyte system of lithium-ion battery electrolytes system and activated carbon ultracapacitor is the organic solvent system of character reality, had both met the requirement of lithium ion battery, and had met again the job demand of activated carbon ultracapacitor, and had been effectively simplified processing and manufacturing process。
Further, described additive is made up of film for additive, anti-overcharge additive and high temperature additive, wherein, film for additive has vinylethylene carbonate (VEC), vinylene carbonate (VC), and concentration is O.5~3.0%, and anti-overcharge additive has cyclobenzene (CHB), biphenyl, dimethylbenzene, concentration is O.5~3.0%, high temperature additive has PS (AS), phthalic anhydride (PA), and its concentration is O.5~3.0%。
This utility model one capacitor type cobalt acid lithium dynamical battery, has following beneficial effect:
The first, the equipment suitability is strong, capacitor type positive plate is formed by the back and sunny side active carbon electrode material layer and lithium cobaltate cathode material layer being respectively coated on plus plate current-collecting body, without preparing lithium cobaltate cathode sheet and lithium cobaltate cathode sheet respectively, simplify the structure of lithium-ion-power cell winding or stacking, existing equipment directly can be adopted to be wound or stacking, improve the equipment suitability;
Second, excellent performance, capacitor type positive plate is formed by the back and sunny side active carbon electrode material layer and lithium cobaltate cathode material layer being respectively coated on plus plate current-collecting body, active carbon electrode material layer and lithium cobaltate cathode material layer are newly formed activated carbon ultracapacitor and lithium ion battery respectively with negative electrode material layer, so that capacitor type cobalt acid lithium dynamical battery has the feature that ultracapacitor power density is high and lithium ion battery energy density is high simultaneously, simultaneously, the setting of activated carbon electrodes layer, both the energy density of cobalt acid lithium ion battery will not have been reduced, and due to activated carbon electrodes layer, avoid the use of the cobalt element that there is bigger security risk in whole battery system, it is effectively improved the security performance of whole battery system;
3rd, easy to process, capacitor type positive plate is formed by the back and sunny side active carbon electrode material layer and lithium cobaltate cathode material layer being respectively coated on plus plate current-collecting body, negative electrode material layer adopts the mixture of natural stone layer of ink, artificial stone layer of ink, soft carbon and hard carbon, without individually processing respectively, without exclusively carrying out fabrication design, simplify the course of processing;
4th, quality stability is high, by being respectively provided with the back and the sunny side of plus plate current-collecting body layer at supercapacitor positive electrode layer, lithium ion cell positive layer, pulping process does not have the quality risk that mixing making beating brings, and negative plate adopts general design also effectively to reduce the quality hidden danger that negative pole diversity is brought;
5th, mass production efficiency is high, due to capacitor type positive plate only a kind of in the process of winding or stacking processing, does not use the troublesome operation of different anode pole piece on winding or stacking, convenient use existing equipment processing, processing proficiency level is high, and the course of processing is simple, it is simple to mass production;
6th, with low cost, the process equipment of employing lithium ion battery carries out capacitor type cobalt acid lithium dynamical battery, and structural design is simple, and technical operation flow simplifies, and mass production efficiency is high, and effectively save generation is originally。
Accompanying drawing explanation
Accompanying drawing 1 is this utility model one capacitor type cobalt acid lithium dynamical battery capacitor type positive plate structural representation;
Accompanying drawing 2 is this utility model one capacitor type square layered laminate structural representation of cobalt acid lithium dynamical battery;
Accompanying drawing 3 is this utility model one capacitor type cylindric winding-structure schematic diagram of cobalt acid lithium dynamical battery;
Accompanying drawing 4 is this utility model one capacitor type cobalt acid lithium dynamical battery negative plate structure schematic diagram;
In accompanying drawing, labelling includes: 1, positive plate, and 2, negative plate, 3, barrier film, 4, box hat, 5, insulating trip, 6, block, 7, negative electrode material layer, 8, aluminum plastic film, 9, supercapacitor positive electrode layer, 10, plus plate current-collecting body layer, 11, lithium ion cell positive layer, 12, negative current collector layer。
Detailed description of the invention
In order to make those skilled in the art be more fully understood that the technical solution of the utility model, below in conjunction with embodiment and accompanying drawing, this utility model product is described in further detail。
Embodiment 1
As shown in Figure 1, the utility model discloses a kind of capacitor type cobalt acid lithium dynamical battery, including positive plate 1, negative plate 2 and barrier film 3, described positive plate 1, negative plate 2 and the spaced winding of barrier film 3 or stack design, described barrier film 3 is arranged between positive plate 1 and negative plate 2, described positive plate 1 is capacitor type positive plate, described capacitor type positive plate is three-layer composite structure, described anode pole piece includes supercapacitor positive electrode layer 9, lithium ion cell positive layer 11 and plus plate current-collecting body layer 10, described supercapacitor positive electrode layer 9 and lithium ion cell positive layer 11 are respectively coated on the back and the sunny side of plus plate current-collecting body 10, described supercapacitor positive electrode layer 9 is active carbon electrode material layer, described lithium ion cell positive layer 11 is lithium cobaltate cathode material layer。Described supercapacitor positive electrode layer 9 and lithium ion cell positive layer 11 misplace in winding or stacking and are separated by。Described plus plate current-collecting body layer 10 is aluminium foil。Described barrier film 3 is PE barrier film, PP barrier film or PE/PP composite diaphragm。Described negative electrode material layer 7 is the mixture of native graphite, Delanium, soft carbon and hard carbon, and described soft carbon and hard carbon mass fraction are the 50-95% of mixture。Described capacitor type cobalt acid lithium dynamical battery also includes lithium-ion battery electrolytes, described lithium-ion battery electrolytes is made up of solvent, electrolytic salt and additive, wherein solvent is grouped into by dimethyl carbonate (DMC), diethyl carbonate (DEC), Ethyl methyl carbonate (EMC), ethylene carbonate (EC) four-tuple, its volume basis is as follows: DMC accounts for 20%~30%, DEC accounts for 20%~30%, EMC accounts for 10%~20%, and EC accounts for 25%~50%。Described additive is made up of film for additive, anti-overcharge additive and high temperature additive, wherein, film for additive has vinylethylene carbonate (VEC), vinylene carbonate (VC), concentration is O.5~3.0%, anti-overcharge additive has cyclobenzene (CHB), biphenyl, dimethylbenzene, and concentration is O.5~3.0%, and high temperature additive has 1,3-propane sultone (AS), phthalic anhydride (PA), its concentration is O.5~3.0%。
Embodiment 2
As in figure 2 it is shown, the spaced stratification square structure of described positive plate 1, negative plate 2 and barrier film 3。Capacitor type cobalt acid lithium dynamical battery described herein is square layered laminate structure, battery is encapsulated as square by aluminum plastic film 8, barrier film 3 is coated with negative plate 2 and positive plate 1, negative plate 2 and positive plate 1 are spaced, and described supercapacitor positive electrode layer 9 and lithium ion cell positive layer 11 misplace in stacking and be separated by。Described capacitor type cobalt acid lithium dynamical battery also includes lithium-ion battery electrolytes, described lithium-ion battery electrolytes is made up of solvent, electrolytic salt and additive, wherein solvent is grouped into by dimethyl carbonate (DMC), diethyl carbonate (DEC), Ethyl methyl carbonate (EMC), ethylene carbonate (EC) four-tuple, its volume basis is as follows: DMC accounts for 20%~30%, DEC accounts for 20%~30%, EMC accounts for 10%~20%, and EC accounts for 25%~50%。Described additive is made up of film for additive, anti-overcharge additive and high temperature additive, wherein, film for additive has vinylethylene carbonate (VEC), vinylene carbonate (VC), concentration is O.5~3.0%, anti-overcharge additive has cyclobenzene (CHB), biphenyl, dimethylbenzene, and concentration is O.5~3.0%, and high temperature additive has 1,3-propane sultone (AS), phthalic anhydride (PA), its concentration is O.5~3.0%。
Embodiment 3
As it is shown on figure 3, the spaced winding of described positive plate 1, negative plate 2 and barrier film 3 forms cylindrical-shaped structure。Capacitor type cobalt acid lithium dynamical battery described herein is cylindrical winding-structure, battery core after winding is arranged in cylindrical steel 4, barrier film 3 is coated with negative plate 2 and positive plate 1, negative plate 2 and positive plate 1 are spaced, described supercapacitor positive electrode layer 9 and lithium ion cell positive layer 11 misplace in stacking and are separated by, and be welded with block 6, be provided with insulating trip 5 between block 6 and battery core above box hat 4, block 6 is connected with positive plate 1, is connected with negative plate 2 bottom box hat 4。
Embodiment 4
As shown in Figure 4, described negative plate 2 is three-layer composite structure, and described negative plate 2 includes negative current collector layer 12 and is coated in the negative electrode material layer 7 of negative current collector layer 12, and described negative current collector layer 12 is Copper Foil。
The above, be only preferred embodiment of the present utility model, and this utility model is not done any pro forma restriction;The those of ordinary skill of all industry all can shown in by specification accompanying drawing and the above and implement this utility model swimmingly;But, all those skilled in the art without departing within the scope of technical solutions of the utility model, available disclosed above technology contents and make a little change, modify and the equivalent variations of differentiation, be Equivalent embodiments of the present utility model;Meanwhile, the change of all any equivalent variations above example made according to substantial technological of the present utility model, modification and differentiation etc., all still fall within the protection domain of the technical solution of the utility model。

Claims (7)

1. a capacitor type cobalt acid lithium dynamical battery, including positive plate (1), negative plate (2) and barrier film (3), described positive plate (1), negative plate (2) and barrier film (3) spaced winding or stack design, described barrier film (3) is arranged between positive plate (1) and negative plate (2), it is characterized in that: described positive plate (1) is capacitor type positive plate, described capacitor type positive plate is three-layer composite structure, described anode pole piece includes supercapacitor positive electrode layer (9), lithium ion cell positive layer (11) and plus plate current-collecting body layer (10), described supercapacitor positive electrode layer (9) and lithium ion cell positive layer (11) are respectively coated on the back and the sunny side of plus plate current-collecting body (10), described supercapacitor positive electrode layer (9) is active carbon electrode material layer, described lithium ion cell positive layer (11) is lithium cobaltate cathode material layer。
2. capacitor type cobalt acid lithium dynamical battery according to claim 1, it is characterised in that: described supercapacitor positive electrode layer (9) and lithium ion cell positive layer (11) misplace in winding or stacking and are separated by。
3. capacitor type cobalt acid lithium dynamical battery according to claim 2, it is characterised in that: the spaced winding of described positive plate (1), negative plate (2) and barrier film (3) forms cylindrical-shaped structure。
4. capacitor type cobalt acid lithium dynamical battery according to claim 2, it is characterised in that: described positive plate (1), negative plate (2) and the spaced stratification square structure of barrier film (3)。
5. the capacitor type cobalt acid lithium dynamical battery according to claim 3 or 4, it is characterised in that: described plus plate current-collecting body layer (10) is aluminium foil。
6. capacitor type cobalt acid lithium dynamical battery according to claim 5, it is characterised in that: described barrier film (3) is PE barrier film, PP barrier film or PE/PP composite diaphragm。
7. capacitor type cobalt acid lithium dynamical battery according to claim 6, it is characterized in that: described negative plate (2) is three-layer composite structure, described negative plate (2) includes negative current collector layer (12) and is coated in the negative electrode material layer (7) of negative current collector layer (12)。
CN201520967939.5U 2015-11-30 2015-11-30 Sour lithium power battery of electric capacity type cobalt Expired - Fee Related CN205335383U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105406135A (en) * 2015-11-30 2016-03-16 李朝 Capacitive type lithium cobalt oxide power battery

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105406135A (en) * 2015-11-30 2016-03-16 李朝 Capacitive type lithium cobalt oxide power battery

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CF01 Termination of patent right due to non-payment of annual fee
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Granted publication date: 20160622

Termination date: 20161130