CN205429091U - Mixed negative pole pole piece lithium ion power batteries of electric capacity type - Google Patents
Mixed negative pole pole piece lithium ion power batteries of electric capacity type Download PDFInfo
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- CN205429091U CN205429091U CN201520972639.6U CN201520972639U CN205429091U CN 205429091 U CN205429091 U CN 205429091U CN 201520972639 U CN201520972639 U CN 201520972639U CN 205429091 U CN205429091 U CN 205429091U
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- lithium
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium Ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title abstract description 25
- 229910001416 lithium ion Inorganic materials 0.000 title abstract description 25
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 40
- 238000002156 mixing Methods 0.000 claims abstract description 29
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 17
- 239000010439 graphite Substances 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 14
- 239000002131 composite material Substances 0.000 claims abstract description 10
- GLUCAHCCJMJHGV-UHFFFAOYSA-N dilithium;dioxido(oxo)titanium Chemical group [Li+].[Li+].[O-][Ti]([O-])=O GLUCAHCCJMJHGV-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000003990 capacitor Substances 0.000 claims description 31
- 238000004804 winding Methods 0.000 claims description 13
- 239000010406 cathode material Substances 0.000 claims description 11
- WHXSMMKQMYFTQS-UHFFFAOYSA-N lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 9
- 229910052744 lithium Inorganic materials 0.000 claims description 9
- 239000007774 positive electrode material Substances 0.000 claims description 9
- 239000010405 anode material Substances 0.000 claims description 6
- 239000011889 copper foil Substances 0.000 claims description 4
- GELKBWJHTRAYNV-UHFFFAOYSA-K Lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 claims description 3
- LBSANEJBGMCTBH-UHFFFAOYSA-N manganate Chemical compound [O-][Mn]([O-])(=O)=O LBSANEJBGMCTBH-UHFFFAOYSA-N 0.000 claims description 3
- 229910021385 hard carbon Inorganic materials 0.000 abstract description 11
- 229910021384 soft carbon Inorganic materials 0.000 abstract description 10
- 229910052799 carbon Inorganic materials 0.000 abstract description 2
- 239000007773 negative electrode material Substances 0.000 abstract 2
- 229910021383 artificial graphite Inorganic materials 0.000 abstract 1
- 229910021382 natural graphite Inorganic materials 0.000 abstract 1
- 239000000654 additive Substances 0.000 description 24
- 230000000996 additive Effects 0.000 description 24
- 210000004027 cells Anatomy 0.000 description 20
- 239000003792 electrolyte Substances 0.000 description 11
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 description 9
- IEJIGPNLZYLLBP-UHFFFAOYSA-N Dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 9
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 9
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 239000000203 mixture Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 7
- BJWMSGRKJIOCNR-UHFFFAOYSA-N 4-ethenyl-1,3-dioxolan-2-one Chemical compound C=CC1COC(=O)O1 BJWMSGRKJIOCNR-UHFFFAOYSA-N 0.000 description 6
- LGRFSURHDFAFJT-UHFFFAOYSA-N Phthalic anhydride Chemical compound C1=CC=C2C(=O)OC(=O)C2=C1 LGRFSURHDFAFJT-UHFFFAOYSA-N 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- -1 nickel-cobalt-manganese Chemical compound 0.000 description 4
- VAYTZRYEBVHVLE-UHFFFAOYSA-N 1,3-dioxol-2-one Chemical compound O=C1OC=CO1 VAYTZRYEBVHVLE-UHFFFAOYSA-N 0.000 description 3
- 235000010290 biphenyl Nutrition 0.000 description 3
- 239000004305 biphenyl Substances 0.000 description 3
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 3
- CTQNGGLPUBDAKN-UHFFFAOYSA-N o-xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 101700048076 ESA1 Proteins 0.000 description 2
- 229910052493 LiFePO4 Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- 229910052803 cobalt Inorganic materials 0.000 description 2
- 239000011258 core-shell material Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 230000002687 intercalation Effects 0.000 description 2
- 238000009830 intercalation Methods 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 210000001787 Dendrites Anatomy 0.000 description 1
- 229910002097 Lithium manganese(III,IV) oxide Inorganic materials 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000003913 materials processing Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 230000001737 promoting Effects 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- 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
-
- 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
Abstract
The utility model discloses a mixed negative pole pole piece lithium ion power batteries of electric capacity type, including the negative pole piece, positive plate and diaphragm, the negative pole piece, the positive plate was convoluteed or cross layer design with mutual separating of diaphragm, the diaphragm sets up between negative pole piece and positive plate, the negative pole piece is for mixing the negative pole pole piece, it is the three -layer composite structure to mix the negative pole pole piece, the negative pole pole piece includes first negative pole layer, second negative pole layer and negative current collector layer, female side and sunny side that first negative pole layer and second negative pole layer coated respectively at negative current collector, first negative pole layer is lithium titanate negative electrode material layer, second negative pole layer is natural graphite, artificial graphite, the graphite negative electrode material layer that soft carbon and hard carbon mixed system are constituteed, soft carbon, hard carbon's quality accounts for the 50 -95% of mixed system, the positive pole material layer of positive pole material layer for including the mass fraction 5 -50% active carbon. The utility model discloses a mixed negative pole pole piece lithium ion power batteries of electric capacity type has the comprehensive properties excellence, processing maneuverability is strong and low cost's characteristics.
Description
Technical field
This utility model relates to cell art, is specially a kind of capacitor type mixing cathode pole piece lithium-ion-power cell.
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 is high, self-discharge rate is 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.Although capacitor has the advantages such as power density is high, have extended cycle life, but energy density is relatively low, and 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 combination of lithium ion battery Yu capacitor is confined to more lithium ion battery and the combination of activated carbon double-layer electrolytic capacitor, typically 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, widen its temperature range used and voltage range, 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 A class materials such as the softest carbon or hard carbon are added negative material, activated carbon adds in positive electrode, i.e. need to add in the 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 slurry, and quality risk is too high.
Utility model content
The purpose of this utility model is to provide a kind of capacitor type mixing cathode pole piece lithium-ion-power cell, take into full account that graphite cathode capacity is big, intercalation potential supports, feature with low cost and lithium titanate anode has extended cycle life, high rate performance is good, the excellent feature good with compatibility of electrolyte of security performance, there is excellent combination property, process feature workable and with low cost.
This utility model can be achieved through the following technical solutions:
nullThe utility model discloses a kind of capacitor type mixing cathode pole piece lithium-ion-power cell，Including negative plate、Positive plate and barrier film，Described negative plate、Positive plate and the spaced winding of barrier film or stack design，Described barrier film is arranged between negative plate and positive plate，Described negative plate is mixing cathode pole piece，Described mixing cathode pole piece is three-layer composite structure，Described cathode pole piece includes the first negative electrode layer、Second negative electrode layer and negative current collector layer，Described first negative electrode layer and the second negative electrode layer are respectively coated on the back and the sunny side of negative current collector layer，Described first negative electrode layer is lithium titanate anode material layer，Described second negative electrode layer is native graphite、Delanium、Soft carbon and the graphite cathode material layer of hard carbon mixed system composition，Described soft carbon、The quality of hard carbon accounts for the 50-95% of mixed system，Described positive electrode material layer is the lithium iron phosphate positive material layer including mass fraction 5-50% activated carbon、Manganate cathode material for lithium layer、Lithium cobaltate cathode material layer or nickel-cobalt-manganternary ternary anode material layer.
Further, described first negative electrode layer and the second negative electrode 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.
Further, the spaced winding of described negative plate, positive plate and barrier film forms cylindrical-shaped structure, meets the production requirement of cylindrical steel housing battery, particularly capacity type cylindrical battery and produces the needs of design.
Further, described negative plate, positive plate and barrier film spaced stratification square structure, meet the production requirement of square soft-package battery, particularly power-type lithium-ion-power cell and produce the needs of design.
Further, described negative current collector layer is Copper Foil, and Copper Foil is as conventional negative current collector, and processing technique is ripe, it is simple to the debugging of negative material coating and processing.
Further, described barrier film is PE barrier film, PP barrier film or PE/PP composite diaphragm, can select unlike material and the barrier film of thickness according to actual battery types.
Further, described positive plate is three-layer composite structure, and described positive plate includes plus plate current-collecting body layer and is coated in the positive electrode material layer of plus plate current-collecting body layer.The structure of positive plate is conventional structure, can directly utilize existing technique and produce, it is provided that the versatility of production, reduces fabrication design cost.
Further, described capacitor type mixing cathode pole piece lithium-ion-power cell 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%.Lithium-ion battery electrolytes system is, with the electrolyte system of activated carbon ultracapacitor, the organic solvent system that character is real, 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, O.5～3.0% film for additive has vinylethylene carbonate (VEC), vinylene carbonate (VC), and concentration is, anti-overcharge additive has cyclobenzene (CHB), biphenyl, dimethylbenzene, O.5～3.0% concentration is, O.5～3.0% high temperature additive has PS (AS), phthalic anhydride (PA), and its concentration is.
This utility model one capacitor type mixing cathode pole piece lithium-ion-power cell, has a following beneficial effect:
First, excellent combination property, play graphite cathode and the such as LiFePO4 in positive pole simultaneously, nickel-cobalt-manganese ternary material, cobalt acid lithium, LiMn2O4s etc. form lithium ion battery and play Delanium, the capacity of native graphite is big, intercalation potential supports, feature with low cost and lithium titanate anode and such as LiFePO4, nickel-cobalt-manganese ternary material, cobalt acid lithium, what the formation lithium ion battery performance lithium titanate anode such as LiMn2O4 had has extended cycle life, high rate performance is good, security performance is excellent, the feature good with compatibility of electrolyte, also by the soft carbon in graphite cathode, hard carbon forms ultracapacitor with the activated carbon in positive pole, give full play to ultracapacitor power density high, the feature having extended cycle life, it is obviously improved the combination property of whole lithium-ion-power cell；
Second, process workable, the separately stirring of graphite cathode and lithium titanate anode and coating, it is respectively coated on the back and the sunny side of negative current collector layer, the most directly mix the uncertainty of materials processing, in addition such as Delanium in graphite cathode, native graphite, soft carbon and hard carbon are graphite body cording preferable compatibility, effectively utilize technique and the equipment of existing negative pole, the most final negative plate prepared only one, simplify stacking and the structure of winding, directly utilize existing stacking or winding apparatus can be processed, and the course of processing without special frock or operates requirement with conventional process；
3rd, with low cost, on the basis of fully promoting lithium-ion-power cell performance, effectively play the advantage that graphite cathode material is with low cost, and the course of processing and existing process operation process highly versatile, effectively save the cost of processing and manufacturing.
Accompanying drawing explanation
Accompanying drawing 1 is this utility model one capacitor type mixing cathode pole piece lithium-ion-power cell mixing cathode pole piece structural representation；
Accompanying drawing 2 is this utility model one capacitor type mixing cathode pole piece lithium-ion-power cell square layered laminate structural representation；
Accompanying drawing 3 is this utility model one capacitor type mixing cathode pole piece lithium-ion-power cell cylindric winding-structure schematic diagram；
Accompanying drawing 4 is this utility model one capacitor type mixing cathode pole piece positive electrode piece of lithium-ion power battery structural representation；
In accompanying drawing, labelling includes: 1, negative plate, 2, positive plate, 3, barrier film, 4, box hat, 5, insulating trip, 6, block, 7, positive electrode material layer, 8, aluminum plastic film, and the 9, first negative electrode layer, 10, negative current collector layer, the 11, second negative electrode layer, 12, plus plate current-collecting body 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
nullAs shown in Figure 1，The utility model discloses a kind of capacitor type mixing cathode pole piece lithium-ion-power cell，Including negative plate 1、Positive plate 2 and barrier film 3，Described negative plate 1、Positive plate 2 and the spaced winding of barrier film 3 or stack design，Described barrier film 3 is arranged between negative plate 1 and positive plate 2，Described negative plate 1 is mixing cathode pole piece，Described mixing cathode pole piece is three-layer composite structure，Described cathode pole piece includes the first negative electrode layer 9、Second negative electrode layer 11 and negative current collector layer 10，Described first negative electrode layer 9 and the second negative electrode layer 11 are respectively coated on the back and the sunny side of negative current collector layer 10，Described first negative electrode layer 9 is lithium titanate anode material layer，Described second negative electrode layer 11 is native graphite、Delanium、Soft carbon and the graphite cathode material layer of hard carbon mixed system composition，Described soft carbon、The quality of hard carbon accounts for the 50-95% of mixed system，Described graphite cathode material includes Delanium and/or native graphite.Described first negative electrode layer 9 and the second negative electrode layer 11 misplace in winding or stacking and are separated by.Described negative current collector layer 10 is Copper Foil.Described barrier film 3 is PE barrier film, PP barrier film or PE/PP composite diaphragm.Described positive electrode material layer 7 is to include the lithium iron phosphate positive material layer of mass fraction 5-50% activated carbon, manganate cathode material for lithium layer, lithium cobaltate cathode material layer or nickel-cobalt-manganternary ternary anode material layer.Described capacitor type mixing cathode pole piece lithium-ion-power cell 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), O.5～3.0% concentration is, O.5～3.0% anti-overcharge additive has cyclobenzene (CHB), biphenyl, dimethylbenzene, and concentration is, high temperature additive has 1, O.5～3.0% 3-propane sultone (AS), phthalic anhydride (PA), its concentration is.
Embodiment 2
As in figure 2 it is shown, described negative plate 1, positive plate 2 and barrier film 3 spaced stratification square structure.Capacitor type mixing cathode pole piece lithium-ion-power cell described herein is square layered laminate structure, battery is encapsulated as square by aluminum plastic film 8, barrier film 3 clad anode sheet 2 and negative plate 1, positive plate 2 and negative plate 1 are spaced, and described first negative electrode layer 9 and the second negative electrode layer 11 misplace in stacking and be separated by.Described capacitor type mixing cathode pole piece lithium-ion-power cell 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), O.5～3.0% concentration is, O.5～3.0% anti-overcharge additive has cyclobenzene (CHB), biphenyl, dimethylbenzene, and concentration is, high temperature additive has 1, O.5～3.0% 3-propane sultone (AS), phthalic anhydride (PA), its concentration is.
Embodiment 3
As it is shown on figure 3, the spaced winding of described negative plate 1, positive plate 2 and barrier film 3 forms cylindrical-shaped structure.Capacitor type mixing cathode pole piece lithium-ion-power cell described herein is cylindrical winding-structure, battery core after winding is arranged in cylindrical steel 4, barrier film 3 clad anode sheet 2 and negative plate 1, positive plate 2 and negative plate 1 are spaced, described first negative electrode layer 9 and the second negative electrode 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 2, is connected with negative plate 1 bottom box hat 4.
Embodiment 4
As shown in Figure 4, described positive plate 2 is three-layer composite structure, and described positive plate 2 includes plus plate current-collecting body layer 12 and is coated in the positive electrode material layer 7 of plus plate current-collecting body layer 12, and described plus plate current-collecting body layer 12 is aluminium foil.
The above, preferred embodiment the most of the present utility model, not this utility model is made 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 in the range of without departing from technical solutions of the utility model, available disclosed above technology contents and a little change made, the equivalent variations modifying and develop, be Equivalent embodiments of the present utility model；Meanwhile, all any equivalent variations above example made according to substantial technological of the present utility model change, modify and differentiation etc., within all still falling within the protection domain of the technical solution of the utility model.
Claims (6)
- null1. a capacitor type mixing cathode pole piece lithium-ion-power cell，Including negative plate (1)、Positive plate (2) and barrier film (3)，Described negative plate (1)、Positive plate (2) and barrier film (3) spaced winding or stack design，Described barrier film (3) is arranged between negative plate (1) and positive plate (2)，It is characterized in that: described negative plate (1) is mixing cathode pole piece，Described mixing cathode pole piece is three-layer composite structure，Described cathode pole piece includes the first negative electrode layer (9)、Second negative electrode layer (11) and negative current collector layer (10)，Described first negative electrode layer (9) and the second negative electrode layer (11) are respectively coated on the back and the sunny side of negative current collector layer (10)，Described first negative electrode layer (9) is lithium titanate anode material layer，Described second negative electrode layer (11) is graphite cathode material layer，Described positive plate (2) is three-layer composite structure，Described positive plate (2) includes plus plate current-collecting body layer (12) and is coated in the positive electrode material layer (7) of plus plate current-collecting body layer (12)，Described positive electrode material layer (7) is lithium iron phosphate positive material layer、Manganate cathode material for lithium layer、Lithium cobaltate cathode material layer or nickel-cobalt-manganternary ternary anode material layer.
- Capacitor type mixing cathode pole piece lithium-ion-power cell the most according to claim 1, it is characterised in that: described first negative electrode layer (9) and the second negative electrode layer (11) misplace in winding or stacking and are separated by.
- Capacitor type mixing cathode pole piece lithium-ion-power cell the most according to claim 2, it is characterised in that: the spaced winding of described negative plate (1), positive plate (2) and barrier film (3) forms cylindrical-shaped structure.
- Capacitor type mixing cathode pole piece lithium-ion-power cell the most according to claim 2, it is characterised in that: described negative plate (1), positive plate (2) and barrier film (3) spaced stratification square structure.
- 5. according to the capacitor type mixing cathode pole piece lithium-ion-power cell described in claim 3 or 4, it is characterised in that: described negative current collector layer (10) is Copper Foil.
- Capacitor type mixing cathode pole piece lithium-ion-power cell the most 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520972639.6U CN205429091U (en) | 2015-11-30 | 2015-11-30 | Mixed negative pole pole piece lithium ion power batteries of electric capacity type |
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| CN201520972639.6U CN205429091U (en) | 2015-11-30 | 2015-11-30 | Mixed negative pole pole piece lithium ion power batteries of electric capacity type |
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| CN205429091U true CN205429091U (en) | 2016-08-03 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105406131A (en) * | 2015-11-30 | 2016-03-16 | 李朝 | Capacitive type lithium-ion power battery with hybrid negative electrode plates |
| CN109428051A (en) * | 2017-08-31 | 2019-03-05 | 宁德时代新能源科技股份有限公司 | Lithium ion battery and positive plate thereof |
-
2015
- 2015-11-30 CN CN201520972639.6U patent/CN205429091U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105406131A (en) * | 2015-11-30 | 2016-03-16 | 李朝 | Capacitive type lithium-ion power battery with hybrid negative electrode plates |
| CN109428051A (en) * | 2017-08-31 | 2019-03-05 | 宁德时代新能源科技股份有限公司 | Lithium ion battery and positive plate thereof |
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