CN205355161U - Electrical storage apparatus - Google Patents
Electrical storage apparatus Download PDFInfo
- Publication number
- CN205355161U CN205355161U CN201520744227.7U CN201520744227U CN205355161U CN 205355161 U CN205355161 U CN 205355161U CN 201520744227 U CN201520744227 U CN 201520744227U CN 205355161 U CN205355161 U CN 205355161U
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- storage device
- energy storage
- electric energy
- metal foil
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- 238000003860 storage Methods 0.000 title abstract description 15
- 229910052751 metal Inorganic materials 0.000 claims description 194
- 239000002184 metal Substances 0.000 claims description 194
- 238000004146 energy storage Methods 0.000 claims description 154
- 239000011888 foil Substances 0.000 claims description 122
- 238000002955 isolation Methods 0.000 claims description 55
- 239000007774 positive electrode material Substances 0.000 claims description 51
- 239000007773 negative electrode material Substances 0.000 claims description 50
- 229920005989 resin Polymers 0.000 claims description 46
- 239000011347 resin Substances 0.000 claims description 46
- 239000003792 electrolyte Substances 0.000 claims description 33
- 229920005992 thermoplastic resin Polymers 0.000 claims description 25
- 239000000565 sealant Substances 0.000 claims description 4
- 239000010410 layer Substances 0.000 description 224
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- -1 polyethylene Polymers 0.000 description 20
- 238000000034 method Methods 0.000 description 19
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 17
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 17
- 239000004743 Polypropylene Substances 0.000 description 15
- 229920001155 polypropylene Polymers 0.000 description 15
- 238000007789 sealing Methods 0.000 description 14
- 239000011889 copper foil Substances 0.000 description 13
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- 229910052744 lithium Inorganic materials 0.000 description 12
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- 239000010935 stainless steel Substances 0.000 description 8
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- 239000002033 PVDF binder Substances 0.000 description 7
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- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 6
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- 229910052799 carbon Inorganic materials 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 description 5
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- QGHDLJAZIIFENW-UHFFFAOYSA-N 4-[1,1,1,3,3,3-hexafluoro-2-(4-hydroxy-3-prop-2-enylphenyl)propan-2-yl]-2-prop-2-enylphenol Chemical group C1=C(CC=C)C(O)=CC=C1C(C(F)(F)F)(C(F)(F)F)C1=CC=C(O)C(CC=C)=C1 QGHDLJAZIIFENW-UHFFFAOYSA-N 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 3
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- 239000004952 Polyamide Substances 0.000 description 3
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- 239000002253 acid Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
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- 229910000147 aluminium phosphate Inorganic materials 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 3
- 239000006229 carbon black Substances 0.000 description 3
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 3
- 239000010941 cobalt Substances 0.000 description 3
- 229910017052 cobalt Inorganic materials 0.000 description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 3
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- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
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- 229910052759 nickel Inorganic materials 0.000 description 3
- 229920001778 nylon Polymers 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 3
- 239000010452 phosphate Substances 0.000 description 3
- 229920002239 polyacrylonitrile Polymers 0.000 description 3
- 229920002647 polyamide Polymers 0.000 description 3
- 229920001707 polybutylene terephthalate Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 229920001661 Chitosan Polymers 0.000 description 2
- 241000644035 Clava Species 0.000 description 2
- 229910001290 LiPF6 Inorganic materials 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 239000002202 Polyethylene glycol Substances 0.000 description 2
- 239000002671 adjuvant Substances 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 210000004027 cell Anatomy 0.000 description 2
- BFGKITSFLPAWGI-UHFFFAOYSA-N chromium(3+) Chemical class [Cr+3] BFGKITSFLPAWGI-UHFFFAOYSA-N 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
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- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical compound FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 229910003002 lithium salt Inorganic materials 0.000 description 2
- 159000000002 lithium salts Chemical class 0.000 description 2
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 2
- 238000013507 mapping Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000012046 mixed solvent Substances 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- 229920006284 nylon film Polymers 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
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- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
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- 150000003839 salts Chemical class 0.000 description 2
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229920002799 BoPET Polymers 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 description 1
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 1
- 229910052493 LiFePO4 Inorganic materials 0.000 description 1
- 229910002097 Lithium manganese(III,IV) oxide Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical class [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- JKJWYKGYGWOAHT-UHFFFAOYSA-N bis(prop-2-enyl) carbonate Chemical compound C=CCOC(=O)OCC=C JKJWYKGYGWOAHT-UHFFFAOYSA-N 0.000 description 1
- 210000000170 cell membrane Anatomy 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
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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 provides an electrical storage apparatus, it takes shape for the heliciform constitutes the deformation of from this can stretching out and drawing back with banding electrical storage apparatus piece (10). Wherein, this electrical storage apparatus has: take shape for the roughly tube -shape body (11) that the heliciform formed banding electrical storage apparatus piece (10), with insert core (50) of configuration in the inner space of the body of tube -shape roughly, preferred component does, roughly a tip (51) on the length direction of core (50) are fixed at a position in two positions that separate each other of the tube -shape body (11), another tip (52) on the length direction of core (50) are fixed at another position.
Description
Technical field
This utility model relates to the electric energy storage device of light weight and the correlation technique thereof stretched.
Additionally, in this manual, the term of " aluminum " means to include Al and Al alloy, and the term of " copper " means to include Cu and Cu alloy, and the term of " nickel " means to include Ni and Ni alloy, and the term of " titanium " means to include Ti and Ti alloy.It addition, in this manual, the term of " metal " means to include elemental metals and alloy.
Background technology
In recent years, slim lightweight along with the mobile equipment such as smart mobile phone, tablet terminal, as the exterior packaging material of the lithium rechargeable battery being equipped in these equipment, lighium polymer secondary battery, and it is used in the lamination exterior packaging material of the two sides binding resin film of metal forming to replace conventional canister.Similarly, studying and also the electric energy storage device employing lamination exterior packaging material on electric storage means (condenser), capacitor (capacitor) etc. is being mounted on IC-card or electronic equipment as stand-by power supply.
And, along with the variation of electronic equipment, form is also diversified, also studies and electronic equipment self carries out alternating bending, folding or stretching, therewith the electric energy storage device carried is also required that identical function.
Generally, by above-mentioned lamination exterior packaging material the laminated-type battery of outer package or capacitor thinner compared with the battery of use canister or capacitor, more light weight and be easier to seal, a degree of flexural deformation can also be born, if but carry out the plastic deformation repeatedly (flexural deformation etc.) of more than stipulated number, then there are the active substance in battery main body portion, activated carbon etc. and can come off and the problem that causes damaging electric energy storage device function.
Accordingly, it is difficult in electronic equipment autoreduplication bends, folds or makes its flexible electronic equipment, carry conventional laminated-type electric energy storage device (by above-mentioned lamination exterior packaging material the electric energy storage device of outer package).
The charge storage element module recorded in patent documentation 1 has: store, discharge multiple electric power storage key elements of electric power；With the housing with adjacent this electric power storage key element segregate state each other, these electric power storage key elements multiple being sealed and being become one, this housing is between the film that these electric power storage key elements multiple are arranged in laminated arrangement, the part of the peripheral part being in this electric power storage key element of this film of stacking is sealed and is formed, but in this charge storage element module, as shown in Fig. 3 of patent documentation 1, it is possible to the weld portion place warpage between the film constituting housing.
Patent documentation 1: Japanese Unexamined Patent Publication 2004-71302 publication
But, the charge storage element described in patent documentation 1 is difficult to stretch, for instance, it is difficult to it is equipped on the equipment such as with flexible etc electronic equipment etc..
Utility model content
This utility model proposes in view of above-mentioned technical background, its object is to, it is provided that a kind of electric energy storage device that the performance of electric energy storage device can not impact ground dilatation.
In order to reach above-mentioned purpose, this utility model provides following mode.
[1] a kind of electric energy storage device, it has the substantially cylindrical body that the electric energy storage device sheet of banding is configured to helical form.
[2] electric energy storage device described in above-mentioned [1] also has the core body inserted in the inner space being arranged in above-mentioned substantially cylindrical body,
A position in separated from one another two position of above-mentioned substantially cylindrical body is fixed on the one end on the length direction of above-mentioned core body, and another position is fixed on the other end on the length direction of above-mentioned core body.
[3] in the electric energy storage device described in above-mentioned [2], one end on the length direction of above-mentioned substantially cylindrical body is fixed on the one end on the length direction of above-mentioned core body, and the other end on the length direction of above-mentioned substantially cylindrical body is fixed on the other end on the length direction of above-mentioned core body.
[4] in the electric energy storage device according to any one of above-mentioned [1]～[3], above-mentioned electric energy storage device sheet has:
Positive pole portion, it includes the first metal foil layer and the positive electrode active material layer with a part of region stacking in the one side of this first metal foil layer；
Negative pole portion, it includes the second metal foil layer and the negative electrode active material layer with a part of region stacking in the one side of this second metal foil layer；With
Isolation part, it is arranged between above-mentioned positive pole portion and above-mentioned negative pole portion,
Above-mentioned positive electrode active material layer is arranged between above-mentioned first metal foil layer and above-mentioned isolation part, and above-mentioned negative electrode active material layer is arranged between above-mentioned second metal foil layer and above-mentioned isolation part,
The circumference region being formed without positive electrode active material layer in the above-mentioned one side of first metal foil layer in above-mentioned positive pole portion and the circumference region being formed without negative electrode active material layer in the above-mentioned one side of second metal foil layer in above-mentioned negative pole portion, engage via the periphery sealant containing thermoplastic resin
Between above-mentioned isolation part and above-mentioned positive electrode active material layer, it is sealed with electrolyte, between above-mentioned isolation part and above-mentioned negative electrode active material layer, is sealed with electrolyte.
[5] in the electric energy storage device described in above-mentioned [4], on the another side of above-mentioned first metal foil layer, it is laminated with the first insulating resin film with the state layer that the first metal exposed division exposed by this first metal foil layer retains,
And on the another side of above-mentioned second metal foil layer, it is laminated with the second insulating resin film with the state layer that the second metal exposed division exposed by this second metal foil layer retains.
[6] in the electric energy storage device described in above-mentioned [5], above-mentioned first metal exposed division forms the end side on the length direction of above-mentioned electric energy storage device sheet, and above-mentioned second metal exposed division forms another side on the length direction of above-mentioned electric energy storage device sheet.
[7] in the electric energy storage device described in above-mentioned [4], the another side of above-mentioned first metal foil layer exposes in the scope of substantially whole, and the another side of above-mentioned second metal foil layer exposes in the scope of substantially whole.
The effect of utility model
In the utility model of [1], there is the substantially cylindrical body that the electric energy storage device sheet of banding is configured to helical form, with (such as will not producing the coming off of active substance or activated carbon, peel off) therefore, it is possible to will not the performance of electric energy storage device be impacted, make electric energy storage device repeatedly flexible (can repeatedly dilatation).
In the utility model of [2], it is configured to be configured with core body in the inner space of substantially cylindrical body, substantially a position in separated from one another two position of cylindrical body is fixed on the one end on the length direction of core body, another position is fixed on the other end on the length direction of core body, owing to substantially cylindrical body is fixed on the one end on the length direction of core body and the other end, so between 2 fixed, substantially cylindrical body (the electric energy storage device sheet of banding is configured to helical form) will not extend to the limit, excessive power is applied thus without to electric energy storage device sheet, it is prevented from coming off of active substance etc., peel off, the fracture of electric energy storage device sheet can also be prevented.On the other hand, even if substantially cylindrical body (the electric energy storage device sheet of banding is configured to helical form) being applied with excessive power to shortening direction between 2 fixed, it also is able to be stoped by core body excessively shorten, therefore, it is possible to prevent the coming off of active substance etc., peel off.
In the utility model of [3], it is possible in the effect of the utility model guaranteeing above-mentioned [2] on the whole of substantially cylindrical body (the electric energy storage device sheet of banding is configured to helical form).
In the utility model of [4], the first metal foil layer constituting positive pole portion and the second metal foil layer constituting negative pole portion also play the function of the exterior packaging material as electric energy storage device, namely, first and second metal foil layer plays the dual-use function of electrode and exterior packaging material, therefore, this structure is not additionally needed exterior packaging material (exterior packaging material is not for needing), thus as electric energy storage device, it is capable of lightweight, slimming, space saving, and also cost can be reduced.
In the utility model of [5], the state layer of the first metal exposed division reservation being configured on the another side of the first metal foil layer to be exposed by this first metal foil layer is laminated with the first insulating resin film, and the state layer retained with the second metal exposed division exposed by this second metal foil layer on the another side of the second metal foil layer is laminated with the second insulating resin film, these insulating resin films are layered in the both sides of equipment, thus can substantially ensure that insulating properties (except metal exposed division), and physical strength can also be substantially ensured that, can fully tackle the STRESS VARIATION produced when dilatation.Therefore, it is possible to the situation that fully reply (this electric energy storage device) is equipped on the position being required to have insulating properties, has irregular position.
Additionally, there are the first metal exposed division with positive electrical conducting and the second metal exposed division with negative electricity conducting, thereby, it is possible to carry out conductivity via these metal exposed divisions, therefore there is the advantage that can be no longer necessary to conventional wire.Therefore, it is possible to reduce the number of components of electric energy storage device, and it is capable of lightweight.
And, conventional wire becomes need not, the phenomenon around wire is concentrated on thus without the heating produced when electric energy storage device discharge and recharge, and be able to make the heat sent diffuse to the entirety (from the teeth outwards) of electric energy storage device via the second metal foil layer of the first metal foil layer and composition negative pole portion that constitute positive pole portion, therefore, it is possible to extend the life-span (long-life electric energy storage device can be accessed) of electric energy storage device.It addition, need not by making wire become, it is possible to correspondingly reduce manufacturing cost.In addition it is possible to as aneroid battery, adopt the simple installation method that electric energy storage device of the present utility model is embedded in keeper.
In the utility model of [6], it is configured to the first metal exposed division and forms the end side on the length direction of electric energy storage device sheet, second metal exposed division forms another side on the length direction of electric energy storage device sheet, therefore, it is possible to reliably avoid contacting between the first metal foil layer constituting positive pole portion with the second metal foil layer constituting negative pole portion, and short circuit can be substantially prevented from.
In the utility model of [7], make to expose in the scope of substantially whole with the first metal foil layer of positive electrical conducting, expose in the scope of substantially whole with the second metal foil layer of negative electricity conducting, it is possible to carry out conductivity via these metal foil layers, therefore there is the advantage that can be no longer necessary to conventional wire.Therefore, it is possible to reduce the number of components of electric energy storage device, and it is capable of lightweight.
And, conventional wire becomes need not, the phenomenon around wire is concentrated on thus without the heating produced when electric energy storage device discharge and recharge, and be able to make the heat sent diffuse to the entirety (from the teeth outwards) of electric energy storage device via the second metal foil layer of the first metal foil layer and composition negative pole portion that constitute positive pole portion, therefore, it is possible to extend the life-span (long-life electric energy storage device can be accessed) of electric energy storage device.It addition, need not by making wire become, it is possible to correspondingly reduce manufacturing cost.In addition it is possible to as aneroid battery, adopt the simple installation method that electric energy storage device of the present utility model is embedded in keeper.
Accompanying drawing explanation
Fig. 1 indicates that the top view of an embodiment of electric energy storage device of the present utility model.
Fig. 2 indicates that the axonometric chart of other embodiments of electric energy storage device of the present utility model.
Fig. 3 indicates that the top view of another other embodiments of this utility model electric energy storage device.
Fig. 4 indicates that the top view at the electric energy storage device sheet being configured under the deployed condition before helical form.
Fig. 5 is the sectional view at X-X line place in the diagram.
Fig. 6 is the sectional view at Y-Y line place in the diagram.
Fig. 7 is the sectional view at Z-Z line place in the diagram.
Fig. 8 is the axonometric chart representing the parts being constituted the positive terminal portion used in fig. 2 with released state.
Fig. 9 indicates that the top view of the core body used in figure 3.
Figure 10 (Figure 10 A～Figure 10 G) indicates that the approximate three-dimensional map of manufacture method one example of side of the positive electrode lamellar body.
Figure 11 (Figure 11 A～Figure 11 G) indicates that the approximate three-dimensional map of manufacture method one example of negative side lamellar body.
Figure 12 indicates that the sectional view of manufacture method one example of electric energy storage device of the present utility model.
Description of reference numerals
1 electric energy storage device
2 first metal foil layers
3 positive electrode active material layers
4 first thermoplastic resins
5 electrolyte
8 first insulating resin retes
9 first metal exposed divisions
10 electric energy storage device sheets
11 substantially cylindrical body
12 second metal foil layers
13 negative electrode active material layers
14 second thermoplastic resins
15 electrolyte
18 second insulating resin retes
19 second metal exposed divisions
21 isolation parts
22 positive pole portions
23 negative pole portions
31 periphery sealings
33 independent cabins
50 core bodys
51 positive terminal portion (one end on the length direction of core body)
52 negative electrode terminal portion (the other end on the length direction of core body)
Detailed description of the invention
Fig. 1 represents an embodiment (the first embodiment) of electric energy storage device of the present utility model.This electric energy storage device 1 is configured to, and has the substantially cylindrical body 11 electric energy storage device sheet 10 of banding being configured to helical form and formed.Owing to being will be configured to helical form in the electric energy storage device sheet 10 of banding under overlooking, so will not the performance of electric energy storage device 1 be impacted (such as, the coming off of active substance or activated carbon will not be produced, peel off), it is possible to make electric energy storage device 1 repeatedly flexible (its dilatation repeatedly can be made).For instance, it is possible to make the length elongation of substantially cylindrical body 11 to about about 6 times from the state of Fig. 1.
Above-mentioned substantially cylindrical body 11 is that the electric energy storage device sheet 10 under overlooking in banding shown in Fig. 4 is configured to helical form, as being configured to this spiral helicine method, such as there are the method etc. the electric energy storage device sheet 10 of the banding shown in Fig. 4 being spirally wound on claval outer peripheral face and shape, but be not particularly limited in this method.
In the present embodiment, as above-mentioned electric energy storage device sheet 10, the electric energy storage device sheet with the cross-sectional configuration shown in Fig. 5～7 is employed.That is, this electric energy storage device sheet 10 has positive pole portion 22, negative pole portion 23 and isolation part (separator) 21 (with reference to Fig. 7).Configuration isolation portion 21 (with reference to Fig. 7) between above-mentioned positive pole portion 22 and above-mentioned negative pole portion 23.
Above-mentioned positive pole portion 22 includes the positive electrode active material layer 3 (with reference to Fig. 7) of a part of region stacking in the one side (face of side, isolation part) of the first metal foil layer 2 and this first metal foil layer 2.In the present embodiment, above-mentioned positive pole portion 22 include central part (region except the circumference) stacking in the one side (face of side, isolation part) of the first metal foil layer 2 and this first metal foil layer 2 positive electrode active material layer 3 (with reference to Fig. 4,7).
Above-mentioned negative pole portion 23 includes the negative electrode active material layer 13 (with reference to Fig. 7) of a part of region stacking in the one side (face of side, isolation part) of the second metal foil layer 12 and this second metal foil layer 12.In the present embodiment, above-mentioned negative pole portion 23 include central part (region except the circumference) stacking in the one side (face of side, isolation part) of the second metal foil layer 12 and this second metal foil layer 12 negative electrode active material layer 13 (with reference to Fig. 4,7).
Between above-mentioned first metal foil layer 2 and above-mentioned isolation part 21, configure above-mentioned positive electrode active material layer 3, between above-mentioned second metal foil layer 12 and above-mentioned isolation part 21, configure above-mentioned negative electrode active material layer 13 (with reference to Fig. 7).
There is the region being formed without positive electrode active material layer in the circumference in the above-mentioned one side (face of side, isolation part 21) of first metal foil layer 2 in above-mentioned positive pole portion 22, the circumference in the above-mentioned one side (face of side, isolation part 21) of second metal foil layer 12 in above-mentioned negative pole portion 23 exists the region being formed without negative electrode active material layer.Then, the circumference region being formed without positive electrode active material layer in the above-mentioned one side of first metal foil layer 2 in above-mentioned positive pole portion 22 and the circumference region being formed without negative electrode active material layer in the above-mentioned one side of second metal foil layer 12 in above-mentioned negative pole portion 23, engage via the periphery sealing 31 containing thermoplastic resin and sealed (with reference to Fig. 4～7).The state (with reference to Fig. 7) that the circumference of above-mentioned isolation part 21 becomes the pars intermedia in the short transverse (thickness direction) of the inner peripheral surface invading above-mentioned periphery sealing 31 and engages.
In the present embodiment, have employed following structure: the circumference area inner layer being formed without positive electrode active material layer in the above-mentioned one side of first metal foil layer 2 in above-mentioned positive pole portion 22 is laminated with the first periphery bond layer 6, the circumference area inner layer being formed without negative electrode active material layer in the above-mentioned one side of second metal foil layer 12 in above-mentioned negative pole portion 23 is laminated with the second periphery bond layer 16, and the two bond layer 6,16 engages via above-mentioned periphery sealing 31 each other and sealed (with reference to Fig. 5～7).
Then, be formed surrounded by above-mentioned first metal foil layer 2, above-mentioned second metal foil layer 12 and above-mentioned periphery sealing 31 independent cabin 33 (with reference to Fig. 4,7).That is, above-mentioned independent cabin 33 is configured to liquid tight condition.
In above-mentioned independent cabin 33, between above-mentioned isolation part 21 and above-mentioned positive electrode active material layer 3, it is sealed with electrolyte 5, and between above-mentioned isolation part 21 and above-mentioned negative electrode active material layer 13, is sealed with electrolyte 15 (with reference to Fig. 7).
Owing to above-mentioned independent cabin 33 is surrounded by above-mentioned first metal foil layer 2, above-mentioned second metal foil layer 12 and above-mentioned periphery sealing 31 and sealed and be configured to liquid tight condition, it is possible to prevent electrolyte 5,15 from spilling.Namely, in the space in the independent cabin 33 surrounded by above-mentioned periphery sealing the 31, the first periphery bond layer 6 being between above-mentioned first metal foil layer 2 and above-mentioned second metal foil layer 12 and the second periphery bond layer 16, configure successively from the first metal foil layer 2 side and be sealed with positive electrode active material layer 3, electrolyte 5, isolation part 21, electrolyte 15, negative electrode active material layer 13 (with reference to Fig. 4,7).
In present embodiment, also there is following structure.Namely, on the another side (being the face of opposition side with the face of side, isolation part) of above-mentioned first metal foil layer 2, the state layer retained with the first metal exposed division 9 exposed by this first metal foil layer is laminated with the first insulating resin film 8 (with reference to Fig. 5), and on the another side (being the face of opposition side with the face of side, isolation part) of above-mentioned second metal foil layer 12, the state layer retained with the second metal exposed division 19 exposed by this second metal foil layer is laminated with the second insulating resin film 18 (with reference to Fig. 6).In the present embodiment, on the another side of above-mentioned first metal foil layer 2, the state layer that the first metal exposed division 9 exposed by this first metal foil layer with the end side on the length direction of electric energy storage device sheet 10 retains be laminated with the first insulating resin film 8 (with reference to Fig. 4,5), and on the another side of above-mentioned second metal foil layer 12, the state layer that the second metal exposed division 19 exposed by this second metal foil layer with another side on the length direction of electric energy storage device sheet 10 retains be laminated with the second insulating resin film 18 (with reference to Fig. 4,6).Additionally, in the present embodiment, on the another side of above-mentioned first metal foil layer 2, the state retained with the first metal exposed division 9 exposed by this first metal foil layer clips the 3rd bond layer 41 and is laminated with the first insulating resin film 8 (with reference to Fig. 5), and on the another side of above-mentioned second metal foil layer 12, the state retained with the second metal exposed division 19 exposed by this second metal foil layer clips the 4th bond layer 42 and is laminated with the second insulating resin film 18 (with reference to Fig. 6).
In the present embodiment, above-mentioned first metal exposed division 9 constitutes positive terminal, and above-mentioned second metal exposed division 19 constitutes negative terminal (with reference to Fig. 1).Then, in the electric energy storage device 1 shown in Fig. 1, it is possible to carry out discharge and recharge via the positive terminal (the first metal exposed division 9) of the one end set in the longitudinal direction with the negative terminal (the second metal exposed division 19) of the other end set in the longitudinal direction.
In the electric energy storage device 1 of the said structure shown in Fig. 4～7, the first metal foil layer 2 constituting positive pole portion 22 and the second metal foil layer 12 constituting negative pole portion 23 also play the function of the exterior packaging material as electric energy storage device, namely, first and second metal foil layer plays the dual-use function of electrode and exterior packaging material, therefore, this structure is not additionally needed exterior packaging material (exterior packaging material becomes not needing), thus as electric energy storage device, it is capable of lightweight, slimming, space saving, and also cost can be reduced.
And, in the above-described embodiment, owing to insulating resin film 8,18 is laminated in the both sides of equipment, so (except metal exposed division) can substantially ensure that insulating properties, and physical strength can also be substantially ensured that.Therefore, it is possible to fully tackle the situation that electric energy storage device 1 of the present utility model is equipped on the position being required to have insulating properties, has irregular position.Additionally, by arranging the first metal exposed division 9 turned on positive electrical and the second metal exposed division 19 with negative electricity conducting, conductivity can be carried out via these metal exposed divisions 9,19, therefore, there is the advantage that can be no longer necessary to conventional wire (not using good).Therefore, it is possible to reduce the number of components of electric energy storage device 1, and realize lightweight.
And, owing to conventional wire becomes not needing, so the phenomenon that the heating when electric energy storage device discharge and recharge concentrates on around wire will not be produced, and be able to make the heat sent diffuse to two face entirety of electric energy storage device 1 via the second metal foil layer 12 of the first metal foil layer 2 and composition negative pole portion that constitute positive pole portion, therefore, it is possible to extend the life-span (long-life electric energy storage device can be accessed) of electric energy storage device 1.It addition, need not by making wire become, it is possible to correspondingly reduce manufacturing cost.In addition, additionally it is possible to as aneroid battery, the simple installation method that electric energy storage device 1 of the present utility model is embedded in keeper (holder) is adopted.
Then, with reference to Fig. 2, other embodiments (the second embodiment) of electric energy storage device of the present utility model are described.This electric energy storage device 1 has: the electric energy storage device sheet 10 of banding is configured to substantially cylindrical body 11 of helical form；With the core body 50 inserting the inner space being arranged in above-mentioned substantially cylindrical body 11.Constituting the electric energy storage device sheet 10 of this substantially cylindrical body 11 is the structure (with reference to Fig. 4～7) identical with the electric energy storage device sheet 10 used in the above-described first embodiment.
Above-mentioned core body 50 is substantially bar-like shape.In the present embodiment, the above-mentioned core body 50 one end on the length direction in axle portion 54 is bonded to positive terminal portion 51, and the other end on the length direction in this axle portion 54 is bonded to negative electrode terminal portion 52.In the present embodiment, as above-mentioned axle portion 54, make use of plastic axle portion, but be not particularly limited in this raw material.
As shown in Figure 8, above-mentioned positive terminal portion 51 have generally cylindrical shaped terminal base 43, can annular solid 44 on this terminal base 43.In the present embodiment, above-mentioned terminal base 43 is metal system, and above-mentioned annular solid 44 is also metal system.The part in circumference in above-mentioned annular solid 44 is formed with inserting hole 45.Above-mentioned inserting hole 45 is formed as rectangular-shaped, but is not particularly limited in this shape.It addition, above-mentioned inserting hole 45 in above-mentioned annular solid 44 be provided around screw hole 46 (with reference to Fig. 8).In the present embodiment, it is formed with four above-mentioned screw holes 46, but is not particularly limited in this quantity of formation.
Additionally, above-mentioned negative electrode terminal portion 52 is the structure (with reference to Fig. 8) identical with above-mentioned positive terminal portion 51.
Then, the one end on the length direction in above-mentioned axle portion 54 is bonded to the bottom surface of generally cylindrical shaped terminal base 43, is embedded with above-mentioned annular solid 44 outside on this terminal base 43, thus constituting above-mentioned positive terminal portion 51 (with reference to Fig. 2).It addition, the other end on the length direction in above-mentioned axle portion 54 is bonded to the bottom surface of generally cylindrical shaped terminal base 43, outside on this terminal base 43, it is embedded with above-mentioned annular solid 44, thus constituting above-mentioned negative electrode terminal portion 52 (with reference to Fig. 2).
Then, above-mentioned core body 50 is configured in the inside of above-mentioned substantially cylindrical body 11, one end on the length direction of above-mentioned substantially cylindrical body 11 is fixed on the one end on the length direction of above-mentioned core body 50 and positive terminal portion 51, and the other end on the length direction of above-mentioned core body 50 and negative electrode terminal portion 52 (with reference to Fig. 2) are fixed in the other end on the length direction of above-mentioned substantially cylindrical body 11.Namely, by the one end on the length direction of above-mentioned substantially cylindrical body 11 is inserted between above-mentioned annular solid 44 and above-mentioned terminal base 43 via the inserting hole 45 of above-mentioned annular solid 44, and the screw hole 46 of screw 47 with above-mentioned annular solid 44 is screwed togather and fastens, so that the first metal exposed division 9 of the one end being present on the length direction of above-mentioned substantially cylindrical body 11 abuts with the inner peripheral surface of above-mentioned metal annular solid 44, thus, guarantee to conduct (with reference to Fig. 2) between the positive pole portion 22 of electric energy storage device sheet 10 and positive terminal portion 51.
Additionally, by the other end on the length direction of above-mentioned substantially cylindrical body 11 is inserted between above-mentioned annular solid 44 and above-mentioned terminal base 43 via the inserting hole 45 of above-mentioned annular solid 44, and the screw hole 46 of screw 47 with above-mentioned annular solid 44 is screwed togather and fastens, so that the second metal exposed division 19 of the other end being present on the length direction of above-mentioned substantially cylindrical body 11 abuts with the outer peripheral face of above-mentioned metal terminal base 43, thus, guarantee to conduct (with reference to Fig. 2) between the negative pole portion 23 of electric energy storage device sheet 10 and negative electrode terminal portion 52.
The length of above-mentioned core body 50 is set smaller than greatest length when above-mentioned substantially cylindrical body 11 extends, and is set greater than minimum length when above-mentioned substantially cylindrical body 11 shortens.And, owing to the one end on the length direction of substantially cylindrical body 11 is fixed on the one end on the length direction of core body 50 and positive terminal portion 51, substantially the other end on the length direction of core body 50 and negative electrode terminal portion 52 are fixed in the other end on the length direction of cylindrical body 11, it is possible to prevent above-mentioned substantially cylindrical body (the electric energy storage device sheet of banding is configured to helical form) 11 from excessively elongating (excessively elongation), and it is prevented from excessively reducing (excessively shortening).Namely, substantially cylindrical body (the electric energy storage device sheet of banding is configured to helical form) 11 will not extend to the limit, therefore, electric energy storage device sheet 10 will not be applied excessive power, the coming off of active substance etc. can be substantially prevented from, peel off, additionally it is possible to prevent the fracture of electric energy storage device sheet 10.Additionally, even if substantially cylindrical body (the electric energy storage device sheet of banding is configured to helical form) 11 being applied with excessive power to shortening direction also to be able to stop excessive shortening by core body 50, therefore, it is possible to be substantially prevented from the coming off of active substance etc., peel off.
Then, another other embodiments (the 3rd embodiment) of electric energy storage device of the present utility model are described with reference to Fig. 3.This electric energy storage device 1 has the substantially cylindrical body 11 that the electric energy storage device sheet 10 of banding is configured to helical form and inserts the core body 50 of the inner space being arranged in above-mentioned substantially cylindrical body 11.Constituting the electric energy storage device sheet 10 of this substantially cylindrical body 11 is the structure (with reference to Fig. 4～7) identical with the electric energy storage device sheet 10 used in the above-described first embodiment.
Above-mentioned core body 50 is substantially bar-like shape.In the present embodiment, the above-mentioned core body 50 one end on the length direction in axle portion 54 is bonded to positive terminal portion 51, and the other end on the length direction in this axle portion 54 is bonded to negative electrode terminal portion 52.In the present embodiment, as above-mentioned axle portion 54, employ metal spring (with reference to Fig. 3,9).Therefore, in the present embodiment, above-mentioned axle portion 54 be formed as axle portion self can to a certain degree to stretch on its length direction (axis direction).
As it is shown in figure 9, above-mentioned positive terminal portion 51 is made up of metal generally cylindrical body, the central axle portion alongst (short transverse of cylinder) at this generally cylindrical body is formed through hole 55.Similarly, as it is shown in figure 9, above-mentioned negative electrode terminal portion 52 is made up of metal generally cylindrical body, the central axle portion alongst (short transverse of cylinder) at this generally cylindrical body is formed through hole 56.
And, one end on the length direction in the axle portion 54 being made up of above-mentioned metal spring interts in the through hole 55 being entrenched in above-mentioned positive terminal portion 51 and fixes, the other end on the length direction in above-mentioned axle portion 54 is interted in the through hole 56 being entrenched in above-mentioned negative electrode terminal portion 52 and fixes, thus constituting above-mentioned core body 50 (with reference to Fig. 9).
It is configured with above-mentioned core body 50 in the inside of above-mentioned substantially cylindrical body 11, one end on the length direction of above-mentioned substantially cylindrical body 11 is fixed on the one end on the length direction of above-mentioned core body 50 and positive terminal portion 51, and the other end on the length direction of above-mentioned core body 50 and negative electrode terminal portion 52 (with reference to Fig. 3) are fixed in the other end on the length direction of above-mentioned substantially cylindrical body 11.
Namely, when the outer peripheral face of the first metal exposed division 9 with above-mentioned positive terminal portion 51 that make the one end being positioned on the length direction of above-mentioned substantially cylindrical body 11 abuts, splicing tape 53 is wound on the periphery of these parts, thus ensure that between the positive pole portion 22 of electric energy storage device sheet 10 and positive terminal portion 51 and conduct (with reference to Fig. 3).
Additionally, the second metal exposed division 19 of the other end on the length direction being positioned at above-mentioned substantially cylindrical body 11 abuts with the outer peripheral face of above-mentioned negative electrode terminal portion 52, splicing tape 53 is wound on the periphery of these parts, thus, between the negative pole portion 23 of electric energy storage device sheet 10 and negative electrode terminal portion 52, ensure that and conduct (with reference to Fig. 3).
In the electric energy storage device 1 of above-mentioned 3rd embodiment, the one end being configured on the length direction of substantially cylindrical body 11 is fixed on the one end on the length direction of core body 50 and positive terminal portion 51, and the other end on the length direction of substantially cylindrical body 11 is fixed on the other end on the length direction of core body 50 and negative electrode terminal portion 52, therefore in the same manner as the second embodiment, substantially cylindrical body 11 will not extend to the limit, therefore, electric energy storage device sheet 10 will not be applied excessive power, it is prevented from coming off of active substance etc., peel off, the fracture of electric energy storage device sheet 10 can also be prevented.Even if it addition, substantially cylindrical body 11 be applied with excessive power also be able to stop excessive shortening by core body 50 to shortening direction, therefore, it is possible to prevent the coming off of active substance etc., peel off.And in the 3rd embodiment, by employing metal spring as axle portion 54, enable axle portion self to a certain degree to stretch on its length direction (axis direction), therefore can dilatation as electric energy storage device 1 entirety.It addition, by employing metal spring as axle portion 54, additionally it is possible to make axle portion 54 flexural deformation, also therefore be able to flexural deformation as electric energy storage device 1 entirety.
In this utility model, structure as above-mentioned electric energy storage device sheet 10, it is not particularly limited in the structure structure of dual-use function of electrode and exterior packaging material (the first metal foil layer 2 constituting positive pole portion 22 and second metal foil layer 12 constituting negative pole portion 23 play) shown in above-mentioned Fig. 4～7, such as, the structure (such as, the structure etc. of embodiments herein 4) that by exterior packaging material (the lamination exterior packaging material etc. of the resin molding that bondd on the two sides of metal forming), electrode body portion is carried out outer package can also be adopted.
When adopting the structure using above-mentioned core body 50, as above-mentioned core body 50, although being not particularly limited, but there are such as not flexible core body (metal wire, metal bar, metal tube, resin-made clava, resin pipe etc.), the core body that can stretch (by the spring member of metal spring etc., substantially clava or the body etc. that are made up of rubber elastomeric material) etc..
When adopting the structure using above-mentioned core body 50, although above-mentioned positive terminal portion 51 is not particularly limited, but preferably formed with hard aluminum.It addition, when adopting the structure using above-mentioned core body 50, although above-mentioned negative electrode terminal portion 52 is not particularly limited, but excellent aluminium (hard aluminum, soft aluminum), copper, rustless steel, nickel or titanium are formed.
In this utility model, although above-mentioned first metal foil layer 2 is not particularly limited, but preferably formed by hard aluminium foil.Preferably the thickness of above-mentioned first metal foil layer 2 is set as 9 μm～150 μm.Wherein, if Anti-cracking generation when considering flexible, weight, cost etc., then particularly preferably the thickness of the first metal foil layer 2 is set as 15 μm～50 μm.
Although above-mentioned positive electrode active material layer 3 is not particularly limited, but it is such as formed by the mixed component etc. added containing lithium metal oxide (such as cobalt acid lithium, lithium nickelate, LiFePO4, LiMn2O4 etc.) in the binding agents (binder) such as PVDF (polyvinylidene fluoride), SBR (butadiene-styrene rubber), CMC (sanlose etc.), PAN (polyacrylonitrile).Above-mentioned mixed component is suitable for being used in lithium rechargeable battery etc., but for double layer capacitor etc., carbons activated carbon is preferably used as positive active material.The thickness of above-mentioned positive electrode active material layer 3 is preferably set to 2 μm～100 μm.
Can also be in above-mentioned positive electrode active material layer 3, contain the conductive adjuvant of carbon fiber, white carbon black, CNT (CNT) etc..
As above-mentioned first periphery bond layer 6, although be not particularly limited, it is preferred to the layer formed by the olefines bonding agent of two-package curing type.When employing the olefines bonding agent of two-package curing type, it is possible to be substantially prevented from the situation causing cementability to decline because of the swelling of electrolyte.The coating amount (drying regime) of above-mentioned first periphery bond layer 6 is preferably set to 1g/m2～5g/m2。
In this utility model, although above-mentioned second metal foil layer 12 is not particularly limited, but preferably formed with aluminium foil (hard aluminium foil, soft aluminium foil), Copper Foil, stainless steel foil, nickel foil or titanium foil.The thickness of above-mentioned second metal foil layer 12 is preferably set to 9 μm～150 μm.Wherein, if Anti-cracking generation when considering flexible, weight, cost, then the thickness of the second metal foil layer 12 is preferably set to 15 μm～50 μm.
As above-mentioned negative electrode active material layer 13, although being not particularly limited, but it is such as formed by the mixed component that with the addition of additive (such as, white carbon black, Ketjen black, carbons activated carbon, graphite, lithium titanate, Si class alloy, stannum class alloy etc.) in the binding agents such as PVDF, SBR, CMC, PAN etc..The thickness of above-mentioned negative electrode active material layer 13 is preferably set to 2 μm～100 μm.
Above-mentioned negative electrode active material layer 13 can also contain the conductive adjuvant of carbon fiber, white carbon black, CNT (CNT) etc..
As above-mentioned second periphery bond layer 16, although be not particularly limited, but it is preferably the layer formed by the olefines bonding agent of two-package curing type.When employing the olefines bonding agent of two-package curing type, it is possible to be substantially prevented from the situation causing cementability to decline because of the swelling of electrolyte.The thickness of above-mentioned second periphery bond layer 16 is preferably set to 0.5 μm～5 μm.
In the above-described embodiment, above-mentioned periphery sealant (the periphery sealant containing thermoplastic resin) 31 is the second thermoplastic resin 14 overlap on the circumference of the first thermoplastic resin 4 on the circumference of the one side by being layered in the first metal foil layer 2 and the one side being layered in the second metal foil layer 12 and carrys out welding by heat and form (with reference to Fig. 5～7).As above-mentioned first thermoplastic resin 4, it is preferable that formed by thermoplastic resin unstretching film.It addition, as above-mentioned second thermoplastic resin 14, it is preferable that formed by thermoplastic resin unstretching film.
Although above-mentioned thermoplastic resin unstretching film 4,14 is not particularly limited, but constitute preferably by the unstretching film being made up of at least one thermoplastic resin selected from the group being made up of polyethylene, polypropylene, olefinic copolymer, the sour modifier of these materials and ionomer.
The thickness of above-mentioned thermoplastic resin unstretching film 4,14 is preferably set to 15 μm～150 μm respectively.Wherein, if considering insulating properties, flexible reply property, cost etc., then the thickness of above-mentioned thermoplastic resin unstretching film 4,14 is preferably set to 20 μm～80 μm.
As above-mentioned isolation part 21, it does not have be particularly limited to, there are:
Polyethylene isolation part,
Polypropylene isolation part,
The isolation part that formed by the multilayer film being made up of polyethylene film and polypropylene screen,
By the isolation part etc. that the multiple aperture plasma membrane of the wet type of the heat resistant inorganic things such as coated with ceramic on any one isolation part above-mentioned or dry type is constituted.
The thickness of above-mentioned isolation part 21 is preferably set to 5 μm～50 μm.
As above-mentioned electrolyte 5,15, although being not particularly limited, but be preferably used include selecting from the group being made up of ethylene carbonate, Allyl carbonate, dimethyl carbonate, Ethyl methyl carbonate, diethyl carbonate and glycol dimethyl ether at least two electrolyte, lithium salts non-water mixing class electrolyte.As above-mentioned lithium salts, although be not particularly limited, but there are lithium hexafluoro phosphate, LiBF4 etc..As above-mentioned electrolyte 5,15, it is possible to use make the electrolyte after the gels such as above-mentioned non-water mixing class electrolyte and PVDF, PEO (polyethylene glycol oxide).
It is enclosed in the space between above-mentioned first metal foil layer 2 and above-mentioned second metal foil layer 12 (with reference to Fig. 7) owing to the surrounding of above-mentioned isolation part 21 and above-mentioned electrolyte 5,15 is surrounded by periphery sealing 31 etc. with air-tight state, it is possible to prevent spilling of electrolyte.
As above-mentioned first insulating resin film 8 and the second insulating resin film 18, although be not particularly limited, but stretched polyamide film (tensile nylon film etc.) or oriented polyester film are preferably used.Wherein, it is particularly preferred to biaxial stretching polyamide film (biaxial stretch-formed nylon membrane etc.), biaxial stretch-formed polybutylene terephthalate (PBT) (PBT) film, biaxial stretch-formed polyethylene terephthalate (PET) film or biaxial stretch-formed PEN (PEN) film.As above-mentioned nylon membrane, although be not particularly limited, but there are Nylon 6 Film, nylon 6,6 film, nylon MXD film etc..Additionally, above-mentioned first insulating resin film 8 and the second insulating resin film 18 all can be formed by monolayer, or such as can be formed by the multilamellar (by stretching the multilamellar etc. that PET film/tensile nylon film is constituted) being made up of oriented polyester film/stretched polyamide film.
In a part for above-mentioned first insulating resin film 8, be provided with peristome 8X for guaranteeing the first metal exposed division 9 (with reference to Fig. 4,5).In the above-described embodiment, peristome 8X is located at the end on the length direction of the first insulating resin film 8, but is not particularly limited in this position.The plan view shape of above-mentioned peristome 8X is rectangular-shaped also without being defined in.
Similarly, in a part for above-mentioned second insulating resin film 18, be provided with peristome 18X for guaranteeing the second metal exposed division 19 (with reference to Fig. 4,6).In the above-described embodiment, peristome 18X is located at the end on the length direction of the second insulating resin film 18, but is not particularly limited in this position.The plan view shape of above-mentioned peristome 18X is rectangular-shaped also without being defined in.
The thickness of above-mentioned first insulating resin film 8 and the thickness of above-mentioned second insulating resin film 18 are all preferably set to 0.01mm～0.1mm.
When arranging above-mentioned 3rd bond layer 41, above-mentioned 4th bond layer 42, although being not particularly limited as these bonding agents 41,42, but be preferably used from the group being made up of polyester-polyurethane class bonding agent and polyether-polyurethane class bonding agent select at least one bonding agent (two-package curing type bonding agent is more highly preferred to).The coating amount (drying regime) of above-mentioned 3rd bond layer 41, above-mentioned 4th bond layer 42 coating amount (drying regime) be all preferably set to 1g/m2～5g/m2.Preferably after the another side (being the face of opposition side with side, isolation part) of above-mentioned first metal foil layer 2 above-mentioned 3rd bonding agent 41 of upper coating, both are bonded and integrated by first insulating resin film 8 that bonds.It is further preferred to after another side (being the face of opposition side with side, isolation part) above-mentioned 4th bonding agent 42 of upper coating of above-mentioned second metal foil layer 12, both are bonded and integrated by second insulating resin film 18 that bonds.
In this utility model, it is preferable that be at least formed with chemical composition coating (chemicalconversioncoating) with on the face of above-mentioned positive electrode active material layer 3 stacking side in above-mentioned first metal foil layer 2.It addition, similarly, it is preferable that be at least formed with chemical composition coating with on the face of above-mentioned negative electrode active material layer 13 stacking side in above-mentioned second metal foil layer 12.Above-mentioned chemical composition coating is the thin film formed by the surface of metal forming is implemented chemical conversion treatment, by implementing this chemical conversion treatment, it is possible to be substantially prevented from the content (electrolyte etc.) corrosion to metal foil surface.Such as, by carrying out following process, metal forming is applied chemical conversion treatment.That is, on the surface of the metal forming carrying out ungrease treatment, by following 1)～3) in any one aqueous solution be coated on the surface of metal forming after, implement chemical conversion treatment by drying:
1) aqueous solution of mixture, comprising:
Phosphoric acid,
Chromic acid and
At least one compound selected from the group being made up of the slaine of fluoride and the non-metal salt of fluoride；
2) aqueous solution of mixture, comprising:
Phosphoric acid,
At least one resin selected from the group being made up of acrylic resin, chitosan derivative resin and phenolic resinoid and
At least one compound selected from the group being made up of chromic acid and chromium (III) salt；
3) aqueous solution of mixture, comprising:
Phosphoric acid,
At least one resin selected from the group being made up of acrylic resin, chitosan derivative resin and phenolic resinoid,
At least one compound selected from the group being made up of chromic acid and chromium (III) salt and
At least one compound selected from the group being made up of the slaine of fluoride and the non-metal salt of fluoride.
For above-mentioned chemical composition coating, as chromium adhesion amount (every one side) preferably 0.1mg/m2～50mg/m2, it is particularly preferred to 2mg/m2～20mg/m2。
In this utility model, although the thickness of above-mentioned electric energy storage device sheet 10 is not particularly limited, but it is preferably set to 80 μm～400 μm.
The length of above-mentioned electric energy storage device sheet 10 (that is, it not the length being configured to spiral helicine substantially cylindrical body, but the length under the deployed condition shown in Fig. 4) be not particularly limited, but it is typically set at 2cm～100cm.It addition, the width W of above-mentioned electric energy storage device sheet 10 is not particularly limited, but it is preferably set to 2mm～20mm (with reference to Fig. 4).
Considering air-tightness, fluid tight, the width M of above-mentioned periphery sealing 31 is preferably set to 0.5mm～5mm (with reference to Fig. 4).
The external diameter of above-mentioned substantially cylindrical body 11 is not particularly limited, but is preferably set to 2mm～50mm.
In addition, in the above-described embodiment, the another side at the first metal foil layer 2 is adopted to be laminated with the first insulating resin film 8, and the another side at the second metal foil layer 12 is laminated with the structure (with reference to Fig. 5～7) of the second insulating resin film 18, but according to purposes etc., it is also possible to adopt the structure of this insulating resin film 8,18 of not stacking.Namely, it is also possible to adopt the another side of the first metal foil layer 2 to expose on substantially whole or whole, the structure that the another side of the second metal foil layer 12 exposes on substantially whole or whole.
Then, an example of the manufacture method of electric energy storage device 1 of the present utility model is described.First, side of the positive electrode lamellar body 61, negative side lamellar body 62 and isolation part 21 (with reference to Figure 12) are prepared respectively.
Namely, prepare side of the positive electrode lamellar body 61, this side of the positive electrode lamellar body 61 is configured to, a part of area inner layer in the one side of the first metal foil layer 2 is laminated with positive electrode active material layer 3, the circumference being formed without positive electrode active material layer in the above-mentioned one side of above-mentioned first metal foil layer 2 clips the first periphery bond layer 6 and is laminated with the first thermoplastic resin 4, and the state retained with the first metal exposed division 9 exposed by the first metal foil layer 2 on the another side of above-mentioned first metal foil layer 2 clips the 3rd bond layer 41 and is laminated with the first insulating resin rete 8 (with reference to Figure 12).Above-mentioned first thermoplastic resin 4 is preferably formed by thermoplastic resin unstretching film.It addition, above-mentioned first insulating resin rete 8 is preferably formed by heat-resistant resin stretched film.Additionally, in embodiment 1 described later, an example of the detailed content of the manufacture method of side of the positive electrode lamellar body 61 is described.
Additionally, prepare negative side lamellar body 62, this negative side lamellar body 62 is configured to, a part of area inner layer in the one side of the second metal foil layer 12 is laminated with negative electrode active material layer 13, the circumference being formed without negative electrode active material layer in the above-mentioned one side of above-mentioned second metal foil layer 12 clips the second periphery bond layer 16 and is laminated with the second thermoplastic resin 14, and the state retained with the second metal exposed division 19 exposed by the second metal foil layer 12 on the another side of above-mentioned second metal foil layer 12 clips the 4th bond layer 42 and is laminated with the second insulating resin rete 18 (with reference to Figure 12).Above-mentioned second thermoplastic resin 14 is preferably formed by thermoplastic resin unstretching film.It addition, above-mentioned second insulating resin rete 18 is preferably formed by heat-resistant resin stretched film.Additionally, in embodiment 1 described later, an example of the detailed content of the manufacture method of negative side lamellar body 62 is described.
It addition, prepare isolation part 21.Then, side of the positive electrode lamellar body 61 is made to contact at respective thermoplastic resin 4,14 place with negative side lamellar body 62, and between positive electrode active material layer 3 and negative electrode active material layer 13, insert isolation part 21, hot plate etc. is utilized to extrude the circumference of the side of the positive electrode lamellar body 61 after these overlaps and negative side lamellar body 62, thus, the first thermoplastic resin 4 and the second thermoplastic resin 14 are sealed joint.
Above-mentioned heat-sealing engages and refers to, three limits in the four edges of the side of the positive electrode lamellar body 61 of counterweight poststack and the circumference of negative side lamellar body 62 first carry out pre-sealed, then, from a remaining unencapsulated edge to injecting electrolyte 5,15 between isolation part 21 and positive electrode active material layer 3 and between isolation part 21 and negative electrode active material layer 13, hereafter, utilize a pair hot plate etc. from the remaining limit extruding unsealing position up and down, thus, fully seal joint four edges, obtain the electric energy storage device sheet 10 shown in Fig. 4.In the electric energy storage device sheet 10 obtained, first metal exposed division 9 exposes via the peristome 8X of the one end on the length direction of the first insulating resin rete 8, and the second metal exposed division 19 exposes (with reference to Figure 12, Fig. 5, Fig. 6) via the peristome 18X of the other end on the length direction of the second insulating resin rete 18.
Then, by the electric energy storage device obtained sheet 10 is spirally wound on the state (so that state of the one side of equipment sheet 10 and the periphery plane-plane contact of barred body) contacted with each other on surface barred body (stainless steel bar etc.) upper and after being configured to helical form, by pulling out barred body, obtain the electric energy storage device 1 that substantially cylindrical body (the electric energy storage device sheet 10 of banding is configured to the substantially cylindrical body of helical form) 11 as shown in Figure 1 is constituted.There is resilience after forming in the electric energy storage device 1 obtained in this way, as it is shown in figure 1, be formed with gap 49 between the electric energy storage device sheet 10 of the upper adjacent banding of length direction (axis direction) of substantially cylindrical body 11.
The example that above-mentioned manufacture method is only enumerated, is not be particularly limited to this manufacture method.
In addition, in the above-described embodiment, have employed the structure (with reference to Fig. 1～3) being provided with gap 49 on the electric energy storage device sheet 10 of longitudinally (substantially the axis direction of cylindrical body 11) upper adjacent banding in substantially cylindrical body 11, but it is not particularly limited in this structure with gap, such as, it is also possible to adopt the structure being not provided with gap between the electric energy storage device sheet 10 of adjacent banding.
In most instances, above-mentioned gap 49 by after being configured to helical form at the electric energy storage device sheet 10 of banding occur resilience and formed, but raw material according to first metal foil layer the 2, second metal foil layer 12 or when the structure thin for equipment sheet 10, mostly there is resilience hardly, in this case, mostly there is no above-mentioned gap 49 or essentially without gap 49.In any case, the technical scheme of the application the electric energy storage device 1 specified also comprises the structure not having this gap and the structure essentially without gap.
Embodiment
Then, specific embodiment of the utility model is illustrated, but this utility model is not particularly limited in these embodiments.
<embodiment 1>
(making of side of the positive electrode lamellar body 61)
As shown in Figure 10 A, utilizing anilox roll (gravureroll), in the one side that thickness is 20 μm and hard aluminium foil (being categorized as the hard aluminium foil of A1N30 in JISH4160) 2 that width is 120mm, coating is of a size of the positive active material of width 10mm × length 390mm.The interval of positive electrode active material layer 3,3 adjacent in the direction of the width is set as 5mm, defines ten positive electrode active material layers 3 (additionally, in Fig. 10, for the ease of mapping, the formation number of positive electrode active material layer 3 is six).It addition, the interval of positive electrode active material layer adjacent in the longitudinal direction is set as 10mm.The hard aluminium foil 2 supplied continuously from roller is applied positive active material continuously, is consequently formed above-mentioned positive electrode active material layer 3.Namely, by applying following PA/Paste (paste) and making it dry, and define the positive electrode active material layer 3 that dry thickness is 30.2 μm, wherein, this PA/Paste be by 60 mass fractions using cobalt acid lithium be main constituent positive active material, 10 mass fractions N-Methyl pyrrolidone (NMP) (organic solvent) the mixing dispersion of hold concurrently as the bonding agent polyvinylidene fluoride of electrolyte retention agent, the acetylene black (conductive material) of 5 mass fractions, 25 mass fractions.
Then, utilizing applied thickness in the anilox roll region (uncoated areas) being not coated with being covered with positive active material in above-mentioned hard aluminium foil (the first metal foil layer) 2 is the olefines bonding agent (the first periphery bond layer) 6 of the two-package curing type of 2 μm, and dries 10 seconds (with reference to Figure 10 B) at 100 DEG C.Then, also bond the un-stretched polypropylene film 4A that thickness is 25 μm on whole of this face, places and carry out maintenance (with reference to Figure 10 C) over three days in the temperature chamber of 40 DEG C.Hereafter, the position coordinated with the outer rim of above-mentioned positive electrode active material layer 3 utilize laser scalpel make cut channel only be carved into un-stretched polypropylene rete 4A, then, remove un-stretched polypropylene film (only removing the inboard portion 4Z of cut channel), thus make the surface of positive electrode active material layer 3 expose (with reference to Figure 10 D).
Then, on the another side (with the face that face is opposition side being laminated with positive electrode active material layer) of above-mentioned hard aluminium foil 2, applied thickness is the polyester-polyurethane bonding agent (the 3rd bond layer) 41 (with reference to Figure 10 E) of the two-package curing type of 2 μm.Now, the one end on the length direction in the region corresponding with positive electrode active material layer 3 is provided with bonding agent non-coated area 71 (with reference to Figure 10 E).Above-mentioned bonding agent non-coated area 71 is of a size of width 10mm × length 5mm.After making above-mentioned polyester-polyurethane bonding agent dry, bonding thickness is the oriented polyester film (the first insulating resin film) 8 of 12 μm, then, places and within three days, carry out maintenance (with reference to Figure 10 F) in the temperature chamber of 40 DEG C.Hereafter, on the position coordinated with the outer rim of above-mentioned bonding agent non-coated area 71, laser scalpel is utilized to make cut channel only be carved into oriented polyester film 8, then, remove the oriented polyester film (only removing the inboard portion of cut channel) being carved into cut channel, thus make the surface of aluminium foil 2 expose to form the first metal exposed division 9 (with reference to Figure 10 G).
Hereafter, utilize and the bisection position on the width in the region between the positive electrode active material layer 3,3 that revolving cutter (slitcutter) are adjacent in the direction of the width cuts off, and the bisection position on the length direction in the region between positive electrode active material layer 3,3 adjacent in the longitudinal direction also cuts off, thus obtains being of a size of the side of the positive electrode lamellar body 61 of width 15mm × length 400mm.
(making of negative side lamellar body 62)
As shown in Figure 11 A, utilizing anilox roll, in the one side that thickness is 20 μm and hard Copper Foil (being categorized as the hard Copper Foil of C1100R in JISH3100) 12 that width is 120mm, coating is of a size of the negative electrode active material of width 10mm × length 390mm.The interval of negative electrode active material layer 13,13 adjacent in the direction of the width is set as 5mm, defines ten negative electrode active material layers 13 (additionally, in fig. 11, for the ease of mapping, the formation number of negative electrode active material layer 13 is six).It addition, the interval of negative electrode active material layer adjacent in the longitudinal direction is set as 10mm.The hard Copper Foil 12 supplied continuously from roller is applied negative electrode active material continuously, is consequently formed above-mentioned negative electrode active material layer 13.Namely, by applying following PA/Paste and making it dry, and define the negative electrode active material layer 13 that dry thickness is 20.1 μm, wherein, this PA/Paste be by 57 mass fractions using carbon dust be main constituent negative electrode active material, 5 mass fractions N-Methyl pyrrolidone (NMP) (organic solvent) the mixing dispersion of hold concurrently as the bonding agent polyvinylidene fluoride of electrolyte retention agent, the hexafluoropropene of 10 mass fractions and the copolymer of maleic anhydride, the acetylene black (conductive material) of 3 mass fractions, 25 mass fractions.
Then, utilize on the anilox roll region (non-coated area) being not coated with being covered with negative electrode active material in above-mentioned hard Copper Foil (the second metal foil layer) 12, applied thickness is the olefines bonding agent (the second periphery bond layer) 16 of the two-package curing type of 2 μm, and dries 10 seconds (with reference to Figure 11 B) at 100 DEG C.Then, bond the un-stretched polypropylene film 14A that thickness is 25 μm on whole of this face, places and within three days, carry out maintenance (with reference to Figure 11 C) in the temperature chamber of 40 DEG C.Hereafter, on the position coordinated with the outer rim of above-mentioned negative electrode active material layer 13, laser scalpel is utilized to make cut channel only be carved into un-stretched polypropylene rete 14A, then, remove un-stretched polypropylene film (only removing the inboard portion 14Z of cut channel), thus make the surface of negative electrode active material layer 13 expose (with reference to Figure 11 D).
Then, on the another side (with the face that face is opposition side being laminated with negative electrode active material layer) of above-mentioned hard Copper Foil 12, applied thickness is the polyester-polyurethane bonding agent (the 4th bond layer) 42 (with reference to Figure 11 E) of the two-package curing type of 2 μm.Now, the one end on the length direction in the region corresponding with above-mentioned negative electrode active material layer 13 is provided with bonding agent non-coated area 72 (with reference to Figure 11 E).Above-mentioned bonding agent non-coated area 72 is of a size of width 10mm × length 5mm.After making above-mentioned polyester-polyurethane bonding agent 42 dry, bonding thickness is the oriented polyester film (the second insulating resin film) 18 of 12 μm, then, places and within three days, carry out maintenance (with reference to Figure 11 F) in the temperature chamber of 40 DEG C.Hereafter, on the position coordinated with the outer rim of above-mentioned bonding agent non-coated area 72, laser scalpel is utilized to make cut channel only be carved into oriented polyester film 18, then, remove the oriented polyester film (only removing the inboard portion of cut channel) being carved into cut channel, thus make the surface of Copper Foil 12 expose to form the second metal exposed division 19 (with reference to Figure 11 G).
Hereafter, utilize and the bisection position on the width in the region between the negative electrode active material layer 13,13 that revolving cutter are adjacent in the direction of the width cuts off, and the bisection position on the length direction in the region between negative electrode active material layer 13,13 adjacent in the longitudinal direction also cuts off, thus, obtain being of a size of the negative side lamellar body 62 of width 15mm × length 400mm.
(making of electric energy storage device 1)
Then, as shown in figure 12, between side of the positive electrode lamellar body 61 and negative side lamellar body 62, overlapped thickness is the wet type isolation part 21 of 8 μm and Porous that width is 102mm.Now, side of the positive electrode lamellar body 61 configures in the way of making positive electrode active material layer 3 be present in side, isolation part 21, and negative side lamellar body 62 configures in the way of making negative electrode active material layer 13 be present in side, isolation part 21.Additionally, when this overlap, so that the mode of the position of the positive electrode active material layer 3 of side of the positive electrode lamellar body 61 position consistency of periphery (so that each other) consistent with each other with the position of the negative electrode active material layer 13 of negative side lamellar body 62 makes two lamellar bodies 61,62 overlapping (with reference to Figure 12).It addition, make the opposition side (with reference to Figure 12) that the position of the position of the first metal exposed division 9 of side of the positive electrode lamellar body 61 and the second metal exposed division 19 of negative side lamellar body 62 becomes on length direction.
Then, isolation part 21 is sandwiched between side of the positive electrode lamellar body 61 and negative side lamellar body 62 when as described above, three limits overlooked in lower four edges are carried out 2 seconds clamping sealing by the hot plate utilizing 200 DEG C of upper and lower a pair with the pressure of 0.2MPa, thus, three limits are sealed joint (being engaged by the un-stretched polypropylene rete 4 of side of the positive electrode lamellar body 61 in around three limits) with the un-stretched polypropylene rete 14 of negative side lamellar body 62.That is, suitable with remaining limit position is still unsealed and is in open state.
Then, utilize syringe by following electrolyte from unsealing limit to injecting 5mL between isolation part 21 and positive electrode active material layer 3, and to injecting 5mL between isolation part 21 and negative electrode active material layer 13, this electrolyte is to make lithium hexafluoro phosphate (LiPF6) be dissolved in the concentration of 1mol/L (mol/L) and to make ethylene carbonate (EC), dimethyl carbonate (DMC), Ethyl methyl carbonate (EMC) with equivalent volumes than the electrolyte of gained in the mixed solvent coordinated.
Hereafter, it is charged the first metal exposed division 9 until end side in the longitudinal direction and length direction produce between the second metal exposed division 19 of another side the cell voltage of 4.2V, producing self-electrode, after the gas (gas) of isolation part etc., under the discharge condition of 3.0V and under the decompression state of 0.086MPa, a pair hot plates of 200 DEG C are utilized to seal from carrying out one limit of residue of unsealing up and down 3 seconds clamping with the pressure of 0.2MPa, thus four edges is fully sealed joint, thus the battery capacity obtaining the structure shown in Fig. 4～7 is 200mAh, thickness is the electric energy storage device sheet 10 of 150 μm.
Then, by after the electric energy storage device obtained sheet 10 be spirally wound in the stainless steel bar that diameter is 5mm being configured to helical form, extract stainless steel bar, thus obtain the electric energy storage device (simulated battery) 1 being made up of the substantially cylindrical body 11 that external diameter is 5.5mm shown in Fig. 1.
<embodiment 2>
Use thickness be the hard stainless steel foil (SUS304) of 20 μm carry out hard Copper Foil that displacement thickness is 20 μm and as second metal foil layer 12 in negative pole portion 23, identical with embodiment 1 in addition, obtain the electric energy storage device that battery capacity is 200mAh (simulated battery) 1 of the structure shown in Fig. 1.
<embodiment 3>
Prepare positive terminal portion 51 and negative electrode terminal portion 52, wherein, this positive terminal portion 51 is formed with, along axis direction, the through hole 55 that diameter is 2mm on the central axle portion of the Aluminum cylindrical body of diameter 10mm × height 10mm, and this negative electrode terminal portion 52 is formed with, along axis direction, the through hole 56 (with reference to Fig. 9) that diameter is 2mm on the cylindrical central axle portion of copper of diameter 10mm × height 10mm.
Then, the one end in the axle portion 54 being made up of the spring (spring member) of stainless steel of diameter to be 7mm, length be 170mm is interted in the through hole 55 being entrenched in above-mentioned positive terminal portion 51, and the other end in axle portion 54 is interted in the through hole 56 being entrenched in above-mentioned negative electrode terminal portion 52, obtains the core body 50 of the structure shown in Fig. 9.
Then, above-mentioned core body 50 inserts the substantially cylindrical body that external diameter is 5.5mm that obtains in embodiment 1 of configuration (the electric energy storage device sheet of banding is configured to helical form and obtains, with reference to Fig. 1, 4～7) in the inner space of 11, when making the first metal exposed division 9 of one end of substantially cylindrical body 11 outer peripheral face with the positive terminal portion 51 of the aluminum of core body 50 abut, wind splicing tape 53 to fix in the periphery of these parts, and when making the second metal exposed division 19 of the other end of substantially cylindrical body 11 outer peripheral face with the negative electrode terminal portion made of copper 52 of core body 50 abut, wind splicing tape 53 to fix in the periphery of these parts, thus obtain the electric energy storage device 1 that the battery capacity shown in Fig. 3 is 200mAh.
<embodiment 4>
(formation of side of the positive electrode thin slice)
Utilize anilox roll, in the one side that thickness is 20 μm and hard aluminium foil (being categorized as the hard aluminium foil of A1N30 in JISH4160) 2 that width is 120mm, apply positive active material with the size of width 120mm × length 380mm, be consequently formed positive electrode active material layer.Namely, by applying following PA/Paste and making it dry and define the positive electrode active material layer that dry thickness is 30 μm, wherein, this PA/Paste be make 60 mass fractions using cobalt acid lithium be main constituent positive active material, 10 mass fractions N-Methyl pyrrolidone (NMP) (organic solvent) the mixing dispersion of hold concurrently as the bonding agent polyvinylidene fluoride of electrolyte retention agent, the acetylene black (conductive material) of 5 mass fractions, 25 mass fractions.Then, be truncated into the size of width 10mm × length 400mm, the length of one end in the longitudinal direction be the part of 20mm obtains by expose on two sides have hard aluminium foil in the way of the positive pole portion that constituted.Then, make the dielectric film that thickness is 50 μm (width 12mm × length 8mm) containing the maleic anhydride modified acrylic resin (Mitsubishi Chemical Ind's system " MODIC-P502 ") that fusing point is 168 DEG C by heat-sealing on the two sides of the above-mentioned exposed division that deposition is bonded in above-mentioned positive pole portion, thus obtaining side of the positive electrode thin slice.
(formation of negative side thin slice)
Utilize anilox roll, in the one side that thickness is 20 μm and hard Copper Foil (being categorized as the hard Copper Foil of C1100R in JISH3100) that width is 120mm, the negative electrode active material of the size of application width 120mm × length 380mm, thus form negative electrode active material layer.Namely, by applying following PA/Paste and making it dry and define the negative electrode active material layer that dry thickness is 20 μm, this PA/Paste be make 57 mass fractions using carbon dust be main constituent negative electrode active material, 5 mass fractions N-Methyl pyrrolidone (NMP) (organic solvent) the mixing dispersion of hold concurrently as the bonding agent polyvinylidene fluoride of electrolyte retention agent, the hexafluoropropene of 10 mass fractions and the copolymer of maleic anhydride, the acetylene black (conductive material) of 3 mass fractions, 25 mass fractions.Then, be truncated into the size of width 10mm × length 400mm, the length of one end in the longitudinal direction be the part of 20mm obtains by expose on two sides have Copper Foil in the way of the negative pole portion that constituted.Then, make the dielectric film that thickness is 50 μm (width 12mm × length 8mm) containing the maleic anhydride modified acrylic resin (Mitsubishi Chemical Ind's system " MODIC-P502 ") that fusing point is 168 DEG C by sealing and the two sides of above-mentioned exposed division that deposition is bonded in above-mentioned negative pole portion, thus obtaining negative side thin slice.
(formation of exterior packaging material)
In the one side that thickness is 20 μm and hard aluminium foil (being categorized as the hard aluminium foil of A1N30 in JISH4160) 2 that width is 120mm, polyester-polyurethane class two-package curing type bonding agent the oriented polyester film that thickness is 12 μm that bonds in this applicator surface is applied in the way of thickness becomes 3 μm.Then, on the another side of above-mentioned hard aluminium foil, in the way of thickness becomes 2 μm, Polyofefine adhesive agent is applied, and the un-stretched polypropylene film that thickness is 25 μm that bonds in this applicator surface, hereafter, this sandwich is placed in the temperature chamber being set as 40 DEG C 3 days, carries out the maintenance of bonding agent.Then, it is truncated into the size of width 15mm × length 400mm, obtains exterior packaging material.
(formation of electric energy storage device)
Make above-mentioned side of the positive electrode thin slice and above-mentioned negative side thin slice clip width to be 10mm, thickness the be wet type isolation part of Porous of 8 μm and overlapping.Now, side of the positive electrode thin slice is configured to have positive electrode active material layer in side, isolation part, and negative side thin slice is configured to have negative electrode active material layer in side, isolation part.It addition, make the opposition side that the position in the two-face exposed portion of the position in the two-face exposed portion of the aluminium foil of side of the positive electrode thin slice and the Copper Foil of negative side thin slice becomes on length direction.And make above-mentioned exterior packaging material overlapping with the two sides of this sandwich respectively.Now, in the way of making the un-stretched polypropylene film side of exterior packaging material be positioned at inner side, (contacting with sandwich) is overlapping.Hereafter, three limits overlooked in lower four edges are carried out 2 seconds clamping sealing by the hot plate utilizing 200 DEG C of upper and lower a pair with the pressure of 0.2MPa, are thus sealed on three limits and engage (being engaged with the un-stretched polypropylene rete of another exterior packaging material by the un-stretched polypropylene rete of an exterior packaging material in around three limits).The sealed width at one long leg place is set as 2.5mm, the sealed width at the both ends place on length direction is respectively set as 10mm.That is, suitable with a remaining limit (another long leg) position is unsealed and is in open state.
Then, utilize syringe by following electrolyte from unsealing limit to injecting 4.5mL between isolation part and positive electrode active material layer, and to injecting 4.5mL between isolation part and negative electrode active material layer, hereafter, being sealed by vacuum and carry out pre-sealed, this electrolyte is to make lithium hexafluoro phosphate (LiPF6) be dissolved in the concentration of 1mol/L and to make ethylene carbonate (EC), dimethyl carbonate (DMC), Ethyl methyl carbonate (EMC) with equivalent volumes than the electrolyte of gained in the mixed solvent coordinated.
Hereafter, it is charged until producing the cell voltage of 4.2V, after producing the gas of self-electrode, isolation part etc., under the discharge condition of 3.0V and under the decompression state of 0.086MPa, a pair hot plates of 200 DEG C are utilized to seal from carrying out a remaining limit of unsealing up and down 3 seconds clamping with the pressure of 0.2MPa, thus four edges is fully sealed joint, obtain battery capacity to be 200mAh, thickness be the electric energy storage device sheet of 222 μm.
Then, by, after the electric energy storage device obtained sheet is spirally wound in the stainless steel bar that diameter is 5mm being configured to helical form, extracting stainless steel bar, thus, obtain the electric energy storage device (simulated battery) being made up of the substantially cylindrical body that external diameter is 5.5mm.
For each electric energy storage device (simulated battery) of the embodiment 1～4 obtained in the above described manner, evaluate based on following assessment method.
<assessment method of discharge capacity ratio>
8 samples have been prepared respectively for each electric energy storage device (for each embodiment).In addition, in Table 1, in embodiments, " historical record not having scaling operation " will be recited as entirely without the sample (four) carrying out scaling operation, the sample (four) carrying out scaling operation is recited as " historical record (500 scaling operation) with scaling operation ".In addition, " scaling operation of 500 times " refer to, carried out 500 times substantially cylindrical body 11 to the flexible test of the scaling operation (maintaining under substantially spiral helicine state after extending in the way of becoming 2 times of length originally, make again it restore the operation to script length condition) of length direction.
(the discharge capacity ratio after charging tightly)
After two the 1st samples relative to each electric energy storage device are respectively with the charging current for charging of 10mA to 4.2V, measure the discharge capacity when being discharged to 3.0V with 10mA current value (being called " not having the discharge capacity after scaling operation and charging tightly "), carry out charging operations subsequently with not carrying out scaling operation for a sample, after performing the flexible test carrying out 500 scaling operation, carry out charging operations subsequently for another sample.That is, after 1st sample above-mentioned relative to two is again respectively with the charging current for charging of 10mA to 4.2V, measure being discharged to discharge capacity during 3.0V (charging tight after discharge capacity) with 10mA current value.It addition, for above-mentioned two sample (respectively stretch historical record and have flexible historical record), utilize internal resistance determinator to measure the internal resistance value (internal resistance value after charging tightly) of electric energy storage device.
Additionally, above-mentioned " the discharge capacity ratio after charging tightly " in each embodiment is the value utilizing following calculating formula to calculate:
Charge the discharge capacity ratio (%) after tightly=(the discharge capacity measured value after the charging tightly of each embodiment) ÷ (not the having scaling operation and the discharge capacity measured value after tightly of charging of each embodiment) × 100
(the discharge capacity ratios after 40 DEG C of placements)
After two the 2nd samples relative to each electric energy storage device are respectively with the charging current for charging of 10mA to 4.2V, measure the discharge capacity when being discharged to 3.0V with 10mA current value (being called " not having the discharge capacity after scaling operation and charging tightly "), carry out charging operations subsequently with not carrying out scaling operation for a sample, after performing the flexible test carrying out 500 scaling operation, carry out charging operations subsequently for another sample.Namely, after 2nd sample above-mentioned relative to two is again with the charging current for charging of 10mA to 4.2V, place seven days in the temperature chamber of 40 DEG C, be then drawn off, measure being discharged to discharge capacity during 3.0V (40 DEG C place after discharge capacities) with 10mA current value.
Additionally, above-mentioned " the discharge capacity ratios after 40 DEG C of placements " in each embodiment are the values utilizing following calculating formula to calculate:
Discharge capacity ratio (%) after 40 DEG C of placements=(the discharge capacity measured values after 40 DEG C of placements of each embodiment) ÷ (not the having scaling operation and the discharge capacity measured value after tightly of charging of each embodiment) × 100
(the discharge capacity ratios after 60 DEG C of placements)
After two the 3rd samples relative to each electric energy storage device are respectively with the charging current for charging of 10mA to 4.2V, measure the discharge capacity when being discharged to 3.0V with 10mA current value (being called " not having the discharge capacity after scaling operation and charging tightly "), carry out charging operations subsequently with not carrying out scaling operation for a sample, after performing the flexible test carrying out 500 scaling operation, carry out charging operations subsequently for another sample.Namely, after 3rd sample above-mentioned relative to two is again with the charging current for charging of 10mA to 4.2V, place seven days in the temperature chamber of 60 DEG C, be then drawn off, measure and be discharged to the discharge capacity (discharge capacities after 60 DEG C of placements) during 3.0V with 10mA current value.Additionally, the calculating formula of " the discharge capacity ratios after 60 DEG C of placements " is with reference to the calculating formula of above-mentioned " the discharge capacity ratios after 40 DEG C of placements ".
(the discharge capacity ratios after 80 DEG C of placements)
And, after two the 4th samples relative to each electric energy storage device are respectively with the charging current for charging of 10mA to 4.2V, measure the discharge capacity when being discharged to 3.0V with 10mA current value (being called " not having the discharge capacity after scaling operation and charging tightly "), carry out charging operations subsequently with not carrying out scaling operation for a sample, after performing the flexible test carrying out 500 scaling operation, carry out charging operations subsequently for another sample.Namely, after 4th sample above-mentioned relative to two is respectively again with the charging current for charging of 10mA to 4.2V, place seven days in the temperature chamber of 80 DEG C, be then drawn off, measure being discharged to discharge capacity during 3.0V (80 DEG C place after discharge capacities) with 10mA current value.Additionally, the calculating formula of " the discharge capacity ratios after 80 DEG C of placements " is with reference to the calculating formula of above-mentioned " the discharge capacity ratios after 40 DEG C of placements ".
Additionally, in embodiment 1,2, be charged operation (with reference to Fig. 1) via the first metal exposed division 9 of the side of the positive electrode in electric energy storage device and the second metal exposed division 19 of negative side.In embodiment 3, it is charged operation (with reference to Fig. 3) via the positive terminal portion 51 in electric energy storage device and negative electrode terminal portion 52.In example 4, it is charged operation via " exposed division of the length direction end side of the aluminium foil in positive pole portion " and " exposed division of another side of length direction of the Copper Foil in negative pole portion " in electric energy storage device.
<assessment method of change of shape rate>
Electric energy storage device for each embodiment, after determining its length (initial length), carry out 500 above-mentioned scaling operation (under maintaining substantially spiral helicine state after extending in the way of becoming 2 times of elongation originally, it is made to restore the operation of the state to script length), measure the length after this scaling operation of 500 times (length after flexible)
Change of shape rate (%)=((length after flexible)-(initial stage length)) ÷ (initial stage length) × 100
Change of shape rate (%) is obtained by above-mentioned calculating formula.
Table 1
Can be expressly understood that from table 1, the electric energy storage device of embodiment 1～4 is after having carried out the scaling operation of 500 times, can also ensure that with carry out scaling operation before the enough discharge capacity of phase same level, therefore, even if dilatation impacts without to the performance of electric energy storage device repeatedly.
It is significantly suppressed as only small it addition, have the electric energy storage device of the embodiment 3 of Fig. 3 structure of the core body change of shape rate after having carried out 500 scaling operation.
Industrial applicibility
Electric energy storage device of the present utility model there are as concrete example: the electrochemical devices of lithium secondary battery (lithium ion battery, lithium polymer battery etc.) etc.；Lithium-ion capacitor；With double layer capacitor etc..
Electric energy storage device of the present utility model such as can dilatation, therefore, can be applicable to the cable self being connected with the electronic equipment not having power supply is paid storage function, can also be equipped on the various mobile model electronic equipments such as smart mobile phone or panel type terminal etc. almost without in the equipment in space, or it is applicable to the power supply etc. of printed circuit board, but is not particularly limited in this purposes.
The application advocates to require the priority that the Japanese patent application laid in JIUYUE in 2014 submission on the 25th is willing to No. 2014-194981, and the disclosure of which directly constitutes the part of the application.
Term used herein and explanation are for illustrating embodiment of the present utility model, and this utility model is not limited to this.As long as this utility model is in the scope of entitlement requests, allow for any design alteration without departing from its spirit.
Claims (7)
1. an electric energy storage device, it is characterised in that there is the substantially cylindrical body that the electric energy storage device sheet of banding is configured to helical form.
2. electric energy storage device as claimed in claim 1, it is characterised in that also have insert be arranged in described in substantially cylindrical body inner space in substantially bar-shaped core body,
A position in separated from one another two position of described substantially cylindrical body is fixed on the one end on the length direction of described core body, and another position is fixed on the other end on the length direction of described core body.
3. electric energy storage device as claimed in claim 2, it is characterized in that, one end on the length direction of described substantially cylindrical body is fixed on the one end on the length direction of described core body, and the other end on the length direction of described substantially cylindrical body is fixed on the other end on the length direction of described core body.
4. the electric energy storage device as according to any one of claims 1 to 3, it is characterised in that described electric energy storage device sheet has:
Positive pole portion, it includes the first metal foil layer and the positive electrode active material layer with a part of region stacking in the one side of this first metal foil layer；
Negative pole portion, it includes the second metal foil layer and the negative electrode active material layer with a part of region stacking in the one side of this second metal foil layer；With
Isolation part, it is arranged between described positive pole portion and described negative pole portion,
Described positive electrode active material layer is arranged between described first metal foil layer and described isolation part, and described negative electrode active material layer is arranged between described second metal foil layer and described isolation part,
The circumference region being formed without positive electrode active material layer in the described one side of first metal foil layer in described positive pole portion and the circumference region being formed without negative electrode active material layer in the described one side of second metal foil layer in described negative pole portion, engage via the periphery sealant containing thermoplastic resin
Between described isolation part and described positive electrode active material layer, it is sealed with electrolyte, between described isolation part and described negative electrode active material layer, is sealed with electrolyte.
5. electric energy storage device as claimed in claim 4, it is characterised in that on the another side of described first metal foil layer, is laminated with the first insulating resin film with the state layer that the first metal exposed division exposed by this first metal foil layer retains, and
On the another side of described second metal foil layer, it is laminated with the second insulating resin film with the state layer that the second metal exposed division exposed by this second metal foil layer retains.
6. electric energy storage device as claimed in claim 5, it is characterised in that described first metal exposed division forms the end side on the length direction of described electric energy storage device sheet, and described second metal exposed division forms another side on the length direction of described electric energy storage device sheet.
7. electric energy storage device as claimed in claim 4, it is characterised in that the another side of described first metal foil layer exposes in the scope of substantially whole, and the another side of described second metal foil layer exposes in the scope of substantially whole.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014194981A JP2016066520A (en) | 2014-09-25 | 2014-09-25 | Electricity storage device |
| JP2014-194981 | 2014-09-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205355161U true CN205355161U (en) | 2016-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520744227.7U Active CN205355161U (en) | 2014-09-25 | 2015-09-23 | Electrical storage apparatus |
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| Country | Link |
|---|---|
| JP (1) | JP2016066520A (en) |
| CN (1) | CN205355161U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112585799A (en) * | 2018-08-22 | 2021-03-30 | 株式会社丰田自动织机 | Power storage module and method for manufacturing power storage module |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7162594B2 (en) * | 2017-01-04 | 2022-10-28 | ナノテク インストゥルメンツ，インコーポレイテッド | Flexible and conformable rope supercapacitors |
| WO2019125085A1 (en) * | 2017-12-21 | 2019-06-27 | 주식회사 엘지화학 | Flexible secondary battery comprising bipolar electrode |
| JP6524386B1 (en) * | 2018-04-30 | 2019-06-05 | 裕憲 松井 | Spiral type rechargeable battery |
| JP7088300B2 (en) * | 2018-10-12 | 2022-06-21 | 株式会社村田製作所 | Flexible thread battery and flexible thread battery with connector |
| DE102018221904A1 (en) * | 2018-12-17 | 2020-06-18 | Robert Bosch Gmbh | Electrode unit for a battery cell, battery cell and method for producing an electrode unit |
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| JPS6029166Y2 (en) * | 1979-04-27 | 1985-09-04 | 東芝電池株式会社 | thin battery |
| JPS59189554A (en) * | 1983-04-09 | 1984-10-27 | Tomoyuki Aoki | Flexible thin battery |
| JPS62296361A (en) * | 1986-06-16 | 1987-12-23 | Seiko Electronic Components Ltd | Plate type battery and its manufacture |
| JPH0377267A (en) * | 1989-08-18 | 1991-04-02 | Matsushita Electric Ind Co Ltd | Flat battery |
| JP3019345B2 (en) * | 1990-01-16 | 2000-03-13 | 株式会社リコー | Sheet battery |
| JPH0528974A (en) * | 1991-07-23 | 1993-02-05 | Yuasa Corp | Film battery |
| JPH08148140A (en) * | 1994-11-21 | 1996-06-07 | Sanyo Electric Co Ltd | Manufacture of current collector-integrated sheet-like composite positive electrode and manufacture of polymer solid electrolyte battery using the positive electrode |
| JP2001110244A (en) * | 1999-10-12 | 2001-04-20 | Sony Corp | Battery cable |
| US9178200B2 (en) * | 2012-05-18 | 2015-11-03 | 24M Technologies, Inc. | Electrochemical cells and methods of manufacturing the same |
| WO2014058279A1 (en) * | 2012-10-11 | 2014-04-17 | 주식회사 엘지화학 | Cable-type secondary battery |
| JP6269314B2 (en) * | 2014-05-19 | 2018-01-31 | Tdk株式会社 | Secondary battery |
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2014
- 2014-09-25 JP JP2014194981A patent/JP2016066520A/en active Pending
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- 2015-09-23 CN CN201520744227.7U patent/CN205355161U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112585799A (en) * | 2018-08-22 | 2021-03-30 | 株式会社丰田自动织机 | Power storage module and method for manufacturing power storage module |
| CN112585799B (en) * | 2018-08-22 | 2024-02-02 | 株式会社丰田自动织机 | Power storage module and method for manufacturing power storage module |
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| Publication number | Publication date |
|---|---|
| JP2016066520A (en) | 2016-04-28 |
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