CN204741032U - Electrochemical appliance is with adorning material and electrochemical appliance outward - Google Patents

Electrochemical appliance is with adorning material and electrochemical appliance outward Download PDF

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Publication number
CN204741032U
CN204741032U CN201520151594.6U CN201520151594U CN204741032U CN 204741032 U CN204741032 U CN 204741032U CN 201520151594 U CN201520151594 U CN 201520151594U CN 204741032 U CN204741032 U CN 204741032U
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Prior art keywords
metal
exterior material
layer
coat
thickness
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CN201520151594.6U
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Chinese (zh)
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南谷广治
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Lishennoco Packaging Co ltd
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Showa Denko Packaging Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/117—Inorganic material
    • H01M50/119—Metals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/121—Organic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/131—Primary casings; Jackets or wrappings characterised by physical properties, e.g. gas permeability, size or heat resistance
    • H01M50/133—Thickness
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/14—Primary casings; Jackets or wrappings for protecting against damage caused by external factors
    • H01M50/141—Primary casings; Jackets or wrappings for protecting against damage caused by external factors for protecting against humidity
    • 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
    • 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
    • Y02E60/13—Energy storage using capacitors
    • 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

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Electric Double-Layer Capacitors Or The Like (AREA)

Abstract

The utility model provides an electrochemical appliance is with adorning material and electrochemical appliance outward, this electrochemical appliance contains with adorning the material outward: metal foil layer (4), and do not extend thin layer (3) as the thermoplasticity resin on inboard layer, its structure does, is formed with metallic coating (8) on the surface of at least one side of metal foil layer (4). Through this structure, can provide an electrochemical appliance with adorning the material outward, it is the lightweight fully to outside next moisture invasion can be restrained, the diffusion of electrolyte also can be prevented simultaneously.

Description

Exterior material used for electrochemical equipment and electrochemical appliance
Technical field
The utility model relates to a kind of thin and exterior material of light weight and by the exterior electrochemical appliance of this exterior material, the electrochemical appliance of the battery that this exterior material uses for the Portable device of smart mobile phone, flat computer etc. or capacitor or the electric power storage battery used or capacitor etc. for motor vehicle driven by mixed power, electric motor car, wind power generation, solar power generation, electricity consumption at night.
Further, in this specification, " outside layer " not represents that it is the outermost layer of exterior material, but assignment is placed in than metal foil layer more lateral.
In addition, in this manual, the implication of " aluminium " is the implication comprising Aluminum-aluminum alloy.
Background technology
Along with slimming, the lightweight of the mobile electronic device of smart mobile phone, flat computer terminal etc., as being equipped on their exterior material of electrochemical appliance of lithium ion battery, lithium polymer battery, lithium-ion capacitor, double electric layer capacitor etc., just efforts be made so that with the lamination exterior material by the two sides of aluminium foil and plastic film at present, to replace traditional metal can, realize light-weighted object.In addition, use the power supply of the electric motor car packaged by lamination exterior material of said structure etc., the large-scale power supply, capacitor etc. of electric power storage purposes, its application also increases to some extent.
As above-mentioned lamination exterior material, generally be configured to, the face of the side of the aluminium foil of screen and the extension film adhered of thermal endurance, to fit on the face of the opposite side of aluminium foil again the structure of heat sealable heat-blocking without extension film simultaneously, by such structure, even if the exterior material that gross thickness is about 100 μm, also there is the function (with reference to patent documentation 1) that can prevent moisture or various gas from invading inside and prevent the leakage of electrolyte.Further, the thickness of the exterior material of the embodiment 1 of patent documentation 1 about 98 μm, the thickness of the exterior material of embodiment 2 about 103 μm.
Patent documentation 1: Japanese Unexamined Patent Publication 2002-25511 publication
Utility model content
Utility model problem to be solved
But above-mentioned mobile electronic devices etc., advance towards more slimming, lightweight in recent years, as electrochemical appliance carried here, also be required more slimming, lightweight, accordingly, the filming of exterior material used for electrochemical equipment, lightweight are also just for this purpose and in being developed.Further, use now the aluminium foil being more than or equal to 30 μm that can not produce pin hole, form exterior material.Further, knownly produce the possibility of pin hole being less than in the aluminium foil of 30 μm to have, thickness is thinner, and pinhole number can more increase.When there is pin hole, aluminium foil cannot play the function as screen, thus just can not prevent outside moisture from invading, and also have the generation of the problem such as diffusion, leakage that cannot prevent electrolyte.
On the other hand, for making not produce pin hole in aluminium foil, when the thickness of aluminium foil is for being more than or equal to 30 μm, the gross thickness as exterior material is at least and is more than or equal to 80 μm, therefore, is difficult to realize further filming, lightweight.
Therefore, even if when the exterior material of the small electrical chemical devices of the lithium ion battery etc. of the low capacity as about 30mA ~ 500mA uses, in fact the specification identical with the exterior material of the bulk electrochemical device of the large lithium ion battery more than 500mA capacity etc. is used, particularly, the filming of the exterior material of the small electrical chemical devices of 30mA ~ 500mA capacity, lightweight have become a very large problem.
The utility model is the utility model in view of described technical background completes, and its object is to, and provides a kind of exterior material used for electrochemical equipment, and it can lightweight fully, and moisture can be suppressed by outside invasion, also can prevent the diffusion of electrolyte simultaneously.
For the scheme of dealing with problems
For reaching described object, the utility model provides following scheme.
[1] exterior material used for electrochemical equipment, it comprises: metal foil layer and the non-extension film layer of thermoplastic resin as la m, is characterized in that,
The coat of metal is formed on the surface of at least side of described metal foil layer.
[2] exterior material used for electrochemical equipment, it comprises: outside layer, as the thermoplastic resin non-extension film layer of la m and the metal foil layer that is disposed between described outside layer and described la m, it is characterized in that,
The coat of metal is formed on the surface of at least side of described metal foil layer.
[3] exterior material used for electrochemical equipment according to preceding paragraph 2, wherein, described outside layer is heat-resistant resin thin layer.
[4] exterior material used for electrochemical equipment according to preceding paragraph 2, wherein, the heat-resistant resin coating that described outside layer is formed for coating heat-resistant resin.
[5] exterior material used for electrochemical equipment according to any one in preceding paragraph 1 ~ 4, wherein, the thickness of described metal foil layer is less than 30 μm for being more than or equal to 5 μm.
[6] exterior material used for electrochemical equipment according to any one in preceding paragraph 1 ~ 5, wherein, the thickness of the described coat of metal is 0.5 μm ~ 5 μm.
[7] exterior material used for electrochemical equipment according to any one in preceding paragraph 1 ~ 6, wherein, the coating that the described coat of metal is formed for the metal material of at least a kind in the group that is selected from nickel, zinc, tin, chromium and cobalt and forms.
[8] exterior material used for electrochemical equipment according to any one in preceding paragraph 1 ~ 7, wherein, the thickness of described exterior material is 30 μm ~ 80 μm.
[9] electrochemical appliance, is characterized in that, possesses:
Electrochemical appliance main part; And
Exterior material used for electrochemical equipment described in any one in preceding paragraph 1 ~ 8,
Described electrochemical appliance main part is undertaken exterior by described exterior material.
Utility model effect
In the utility model of [1] and [2], owing to being the structure being formed with the coat of metal on the surface of at least side of thin metal layer, so, even if the filming because of metal forming makes to there is pin hole in metal foil layer, also moisture can be suppressed by outside invasion by the coat of metal, electrolyte can be suppressed externally to spread, leak simultaneously.Like this by the existence of the coat of metal, the raising of above-mentioned effect can be reached, thus, even if become thinner (be such as more than or equal to 5 μm and be less than 30 μm) to make its lightweight the Thickness Design of metal foil layer, also moisture can be suppressed by the diffusion that can prevent electrolyte while of outside invasion as exterior material.Therefore, according to the utility model, sufficient filming, lightweight can be realized, and guarantee excellent moisture shielding and the electrolyte diffusion preventing of excellence.Use the electrochemical appliance that filming like this, light-weighted exterior material of the present utility model are exterior, just can improve gravimetric energy density and the volume energy density of electrochemical appliance.And then, because the surface of at least side at metal foil layer is formed with the coat of metal, so the paracentesis resistance that metal forming itself possesses more can be improved.
And then, in the utility model of [2], owing to being provided with outside layer, so the puncture strength as the due abundance of exterior material can be guaranteed, can paracentesis resistance be improved.
In the utility model of [3], because outside layer is heat-resistant resin thin layer, so the puncture strength as exterior material more can be improved.
In the utility model of [4], due to the heat-resistant resin coating that outside layer is formed for coating heat-resistant resin, so the puncture strength as exterior material more can be improved.In addition, heat-resistant resin coating, can filming more with formed the situation of outside layer with heat-resistant resin thin layer compared with.
In the utility model of [5], because the thickness of metal foil layer is less than 30 μm for being more than or equal to 5 μm, so excellent moisture shielding and the electrolyte diffusion preventing of excellence can be guaranteed, and then realize filming, lightweight.
In the utility model of [6], because the thickness of the coat of metal is 0.5 μm ~ 5 μm, so sufficient filming, lightweight can be realized, and excellent moisture shielding and the electrolyte diffusion preventing of excellence can be guaranteed.
In the utility model of [7], due to the coating that the coat of metal is formed for the metal material of at least a kind in the group that is selected from nickel, zinc, tin, chromium and cobalt and forms, so more excellent moisture shielding and more excellent electrolyte diffusion preventing can be guaranteed, more can improve the puncture strength as exterior material simultaneously.
In the utility model of [8], because the thickness of exterior material is 30 μm ~ 80 μm, thus use this exterior material carry out exterior electrochemical appliance, more can improve gravimetric energy density and the volume energy density of electrochemical appliance.
In the utility model (electrochemical appliance) of [9], pass through exterior material, thus a kind of electrochemical appliance can be provided, it can guarantee excellent moisture shielding and the electrolyte diffusion preventing of excellence, improves gravimetric energy density and the volume energy density of electrochemical appliance simultaneously.
Accompanying drawing explanation
Fig. 1 is the profile of the execution mode (the 1st execution mode) representing exterior material used for electrochemical equipment of the present utility model.
Fig. 2 is the profile of other execution mode (the 2nd execution mode) representing exterior material used for electrochemical equipment of the present utility model.
Fig. 3 is the profile of another other execution mode (the 3rd execution mode) representing exterior material used for electrochemical equipment of the present utility model.
Fig. 4 is the profile of another other execution mode (the 4th execution mode) representing exterior material used for electrochemical equipment of the present utility model.
Fig. 5 is the profile of the execution mode representing electrochemical appliance of the present utility model.
Fig. 6 is the exterior material (flat shape) of the electrochemical appliance representing pie graph 5, electrochemical appliance main part and exterior material (being formed as three-dimensional shape) seal before the stereogram of released state.
Embodiment
One execution mode of the exterior material used for electrochemical equipment 1 involved by the utility model as shown in Figure 1.This exterior material 1 used for electrochemical equipment is formed with the side of the screen 10 of the coat of metal 8,8 face by the two sides at metal foil layer 4 is stacked integrated with outside layer 2 across the 1st bond layer 5, simultaneously stacked integrated and form across the 2nd bond layer 6 and thermoplastic resin non-extension film layer (la m) 3 in the face of the opposite side of described screen 10.In the present embodiment, described outside layer 2 is made up of heat-resistant resin thin layer 12.
In the execution mode shown in Fig. 1, although described screen 10 forms the coat of metal 8,8 on the two sides of metal foil layer 4, but be not particularly limited to such structure, as shown in Figure 2,3, also can adopt the structure only forming the coat of metal 8 in the face of the side of metal foil layer 4.
Namely, in the embodiment shown in figure 2, exterior material 1 used for electrochemical equipment is formed with this side of the screen 10 of the coat of metal 8 face (surface of the coat of metal 8) by the face of the side at metal foil layer 4 is stacked integrated with outside layer 2 across the 1st bond layer 5, simultaneously stacked integrated and form across the 2nd bond layer 6 and thermoplastic resin non-extension film layer (la m) 3 in the face (surface of metal foil layer 4) of the opposite side of described screen 10.In the present embodiment, described outside layer 2 is made up of heat-resistant resin thin layer 12.
In addition, in the execution mode shown in Fig. 3, this exterior material 1 used for electrochemical equipment is formed with the opposite side of the screen 10 of the coat of metal 8 face (surface of metal foil layer 4) by the face of the side at metal foil layer 4 is stacked integrated with outside layer 2 across the 1st bond layer 5, simultaneously stacked integrated and form across the 2nd bond layer 6 and thermoplastic resin non-extension film layer (la m) 3 in the face (surface of the coat of metal 8) of the side of described screen 10.In the present embodiment, described outside layer 2 is made up of heat-resistant resin thin layer 12.
On the other hand, in the execution mode shown in Fig. 4, exterior material 1 used for electrochemical equipment is formed with the side of the screen 10 of the coat of metal 8,8 face by the two sides at metal foil layer 4 is stacked integrated with the heat-resistant resin coating 13 as outside layer 2, simultaneously stacked integrated and form across the 2nd bond layer 6 and thermoplastic resin non-extension film layer (la m) 3 in the face of the opposite side of described screen 10.
In the utility model, as mentioned above, the coat of metal 8 is formed on the surface of at least side of described metal foil layer 4, even if having pin hole because of the filming of metal forming in metal foil layer 4, the depth direction (thickness direction of metal forming) of its pin hole open-ended, can be considered to almost close by the coat of metal 8.In addition, also can think the inside (the open-ended more deep hole interior zone from pin hole) of pin hole in metal foil layer 4, the coat of metal 8 also can invade wherein and form roughly closed or closed state.
In above-mentioned exterior material 1 used for electrochemical equipment, due to the structure for being formed with the coat of metal 8 on the surface of at least side of metal foil layer 4, even if so by the filming of metal forming, make to there is pin hole in metal foil layer 4, also suppress moisture by outside invasion by the coat of metal 4, electrolyte also can be suppressed externally to spread, leak simultaneously.By the existence of such coat of metal 4, thus reach the raising of above-mentioned each effect, and, even if the Thickness Design of metal foil layer 4 obtained thinner (be such as more than or equal to 5 μm and be less than 30 μm) and make lightweight, moisture can be suppressed by outside invasion as exterior material 1 and prevent the diffusion of electrolyte simultaneously.Therefore, according to the utility model, sufficient filming, lightweight can be realized, and guarantee excellent moisture shielding and the electrolyte diffusion preventing of excellence.Use filming like this, light-weighted exterior material 1 of the present utility model carries out exterior electrochemical appliance 30, gravimetric energy density and the volume energy density of electrochemical appliance can be improved.And then, owing to being formed with the coat of metal 8 on the surface of at least side of metal foil layer 4, the paracentesis resistance that metal forming itself possesses therefore more can be improved.
And then, in the execution mode shown in Fig. 1 ~ 4, no matter either type, be all provided with outside layer 2, therefore can guarantee that exterior material 1 has sufficient puncture strength, fully can improve paracentesis resistance.
And, in the stepped construction shown in Fig. 1,4, because as realizing function of shielding, there are metal foil layer 4, the coat of metal 8 formed in the face of the side of this metal foil layer 4, three layers of the coat of metal 8 that formed in the face of the opposite side of described metal foil layer 4, so with the stepped construction shown in Fig. 2,3 (as realizing function of shielding, there is metal foil layer 4, formed in the face of the side of this metal foil layer 4 two layers of the coat of metal 8) compare, there is the advantage guaranteeing more excellent moisture shielding and more excellent electrolyte diffusion preventing.
And, in the utility model, when for realize sufficient lightweight the thickness of described metal foil layer 4 is set smaller than 30 μm, have the possibility producing pin hole in metal forming, on the other hand, though the coat of metal 8 stress change etc. cannot be denied and produce the possibility that a minority part peels off, but, at Fig. 2, in the structure (being provided with the structure of the double shielding of metal foil layer 4 and a coat of metal 8) of 3, in fact the possibility that the pin hole position (specified point) of described metal foil layer 4 overlaps with the pick-up point position (specified point) of the described coat of metal 8 can't occur, therefore excellent moisture shielding and the electrolyte diffusion preventing of excellence can be guaranteed.
And then, at Fig. 1, in the structure of 4, be provided with following triple-shielded portion: metal foil layer 4, the coat of metal 8 formed in the face of the side of this metal foil layer 4 and the coat of metal 8 formed in the face of the opposite side of this metal foil layer 4, the pick-up point position (specified point) of the pin hole position (specified point) of described metal foil layer 4 and the pick-up point position (specified point) of the coat of metal 8 of described side and the coat of metal 8 of described opposite side, in fact these three possibilities all overlapped in co-located can't occur, therefore structure (the Fig. 1 in triple-shielded portion is provided with, the structure of 4), with Fig. 2, the structure (being provided with the structure of double shielding part) of 3 compares, more excellent moisture shielding and more excellent electrolyte diffusion preventing can be guaranteed.
In the utility model, described metal foil layer 4, plays and stops oxygen or moisture intrusion exterior material 1, give its gas barrier property.The thickness of described metal foil layer 4 is preferably greater than and equals 5 μm and be less than 30 μm.By being set in this thickness range, thus filming, lightweight can be realized, simultaneously by the thickness of the described coat of metal 8 of increase and decrease adjustment, thus can guarantee, as exterior material 1 entirety, there is excellent moisture shielding and the electrolyte diffusion preventing of excellence.Wherein, the thickness of described metal foil layer 4 is preferably greater than and equals 5 μm and be less than 20 μm, is particularly preferably 5 μm ~ 18 μm.As described metal forming, though be not particularly limited, can enumerate such as, aluminium foil, stainless steel foil, nickel foil, Copper Foil, titanium foil etc.Wherein, preferably aluminium foil is used according to the viewpoint of lightweight and cost.
Outside layer 2 and la m (the non-extension film layer of thermoplastic resin) 3 are the layers be made up of resin, although be denier in these resin beds, but there is the outside from shell, enter the possibility of light, oxygen, liquid, also have from inside, the possibility that content (electrolyte, food, pharmaceuticals etc. of battery) infiltrates.When these invaders arrive metal foil layer 4, the corrosion of metal foil layer 4 can be become.In the utility model, preferably formed in the face of at least described thermoplastic resin layer 3 side of described metal forming and change into epithelium, in this case, the corrosion resistance of metal foil layer 4 can be improved.Wherein, particularly preferably adopt the structure being formed on the two sides of described metal forming and change into epithelium, in this case, fully can improve the corrosion resistance of metal foil layer 4.
The described epithelium that changes into is the epithelium formed in the surface of metal forming execution chemical conversion treatment, such as, by implementing chromate process in metal forming, using the non-chromium type chemical conversion treatment of zirconium compounds, thus changes into epithelium described in being formed.Such as, when chromate process, in the metal foil surface of carrying out ungrease treatment, apply following 1) ~ 3) in any one mixture the aqueous solution after, make it dry.
1) containing the aqueous solution of mixture being selected from least a kind of compound in group that phosphoric acid, chromic acid, the slaine of fluoride and the non-metal salt of fluoride form
2) containing being selected from least a kind of resin in group that phosphoric acid, acrylic resin, chitosan derivatives resin (Chitosan derivative resins) and benzene phenol resin form, and the aqueous solution of mixture of at least a kind of compound in group that chromic acid and chromium (III) salt forms is selected from
3) containing being selected from phosphoric acid, at least a kind of resin in group that acrylic resin, chitosan derivatives resin, benzene phenol resin are formed, with be selected from least a kind of compound in group that chromic acid and chromium (III) salt forms, and the aqueous solution of the mixture of at least a kind of compound in the group that forms of the non-metal salt of the slaine and fluoride that are selected from fluoride.
Describedly change into epithelium, its chromium adhesion amount (one side) is preferably with 0.1mg/m 2~ 50mg/m 2, be particularly preferably 2mg/m 2~ 20mg/m 2.
As the metal forming the described coat of metal 8, though be not particularly limited, can enumerate such as, nickel, zinc, tin, chromium, cobalt, gold, silver, platinum etc.Wherein, the electrodeposited coating that the metal material that the described coat of metal 8 is preferably selected from the group that nickel, zinc, tin, chromium and cobalt form at least a kind is formed, when by least a kind of these specific metal materials form, further excellent moisture shielding and further excellent electrolyte diffusion preventing can be guaranteed, the puncture strength as exterior material 1 can be improved simultaneously.
Thickness (when two sides is formed with the coat of metal, the thickness at the coat of metal that the one side is formed) T of the described coat of metal 8 is preferably set to 0.5 μm ~ 5 μm.When although the thickness of described metal foil layer 4 is less than 30 μm, the possibility that pin hole occurs is had in metal forming, but by coordinating the thickness of this metal forming, the thickness T of this coat of metal 8 of increase and decrease adjustment, thus can guarantee, as exterior material 1 entirety, there is excellent moisture shielding and the electrolyte diffusion preventing of excellence.Wherein, the thickness of the described coat of metal 8 is (when two sides is formed with the coat of metal, the thickness of the coat of metal one side is formed) T, according to can the viewpoint of pin hole of adequate closure metal foil layer 4, be preferably set to 2 μm ~ 5 μm (with reference to Fig. 1 ~ 4).Further, as forming the metal of the coat of metal 8, when using nickel, with use other metal situation compared with, there is the advantage that more can improve puncture strength.
As the method for described metal-plated, though be not particularly limited, such as electroless plating method, galvanoplastic, vacuum-deposited coating etc. can be enumerated.Wherein, the described coat of metal 8 is formed preferably by electroless plating method.The coat of metal that electroless plating is formed, compared with being formed with galvanoplastic, do not have uneven situation can form more homogeneous coating, reliably can guarantee excellent moisture shielding and the electrolyte diffusion preventing of excellence, it is special in metal foil layer 4 is aluminium foil layer, can realize this aluminium foil layer 4, the coat of metal (coat of metal formed with electroless plating method) 8 possesses the advantageous effects of high close property.
The non-extension film layer (la m) 3 of described thermoplastic resin, even if it possesses the high electrolyte etc. of the corrosivity that uses for lithium rechargeable battery etc., also has excellent resistance to chemical reagents, plays the effect of giving exterior material heat sealability simultaneously.
As the resin forming the non-extension film layer 3 of described thermoplastic resin, though be not particularly limited, but can enumerate such as, the polyethylene etc. of polyethylene, polypropylene, ionomer, ethylene ethyl acrylate (EEA), ethylene methyl acrylate (EAA), ethylenemethylmethacrylate resin (EMMA), ethylene vinyl acetate copolymer resins (EVA), maleic anhydride modacrylic, maleic anhydride sex change.
The thickness of the non-extension film layer 3 of described thermoplastic resin is preferably set to 20 μm ~ 80 μm.Equaling 20 μm by being set greater than, the generation of pin hole can be prevented fully, meanwhile, being less than or equal to 80 μm by being set in, can resin demand be reduced thus realize cost decline.Wherein, the thickness of the non-extension film layer 3 of described thermoplastic resin is particularly preferably set as 30 μm ~ 50 μm.Further, the non-extension film layer 3 of described thermoplastic resin, can be individual layer and also can be composite bed.
In the utility model, described outside layer 2 plays the critical piece guaranteeing to have good formability as exterior material, that is, play and prevent metal forming when being shaped from rupturing because of necking down.Further, in the utility model, described outside layer 2, though and nonessential structure sheaf, but to be provided as preferably.
Described outside layer 2, though be not particularly limited, is preferably made up of heat-resistant resin thin layer 12, or, preferably form by being coated with the heat-resistant resin coating 13 that heat-resistant resin formed.In this case, there is the advantage of the puncture strength more improved as exterior material 1.
As described heat-resistant resin thin layer 12, though be not particularly limited, preferably use such as, extend polyamide film (extending nylon film etc.), extension polyester film.Wherein, as described heat-resistant resin thin layer 12 particularly preferably use extend polyamide films (two axles extend nylon films etc.) by two axles, two axles extend polybutylene terephthalate (PBT) (PBT) films, two axles extend PETG (PET) films or two axles extend poly-naphthalenedicarboxylic acid (PEN) film and form.As described nylon, though be not particularly limited, can be enumerated as such as, 6 nylon, 6,6 nylon, MXD nylon etc.And, described heat-resistant resin thin layer 12, can be formed by individual layer (single extension film), or, also can be formed by such as composite bed formed by extension polyester film/extension polyamide film (two axles extend PET film/bis-axle and extend compound formed by nylon film etc.).
Wherein, described heat-resistant resin thin layer 12 is preferably containing the two axle extension polyester films being configured at outward side, the lamination layer structure being configured at two axles extension polyamide films of the 1st bond layer 5 side.And then described heat-resistant resin thin layer 12 is more preferably the lamination layer structure extending nylon film containing two axles that two axles being configured at outward side extend polyethylene terephthalate, be configured at the 1st bond layer 5 side.
Further, described heat-resistant resin thin layer 12, also can be made up of the non-extension film of heat-resistant resin of the non-extension film of Merlon, the non-extension film of polyimides etc.
The thickness of described heat-resistant resin thin layer 12 is preferably set to 12 μm ~ 50 μm.
The coating that described heat-resistant resin coating 13 is formed for coating heat-resistant resin.Such as, formed by the surface application heat-resistant resin at metal foil layer 4.Or the face (surface of the coat of metal 8) of this side of the screen 10 that the face by least side at thin metal layer 4 forms the coat of metal 8 and forms applies heat-resistant resin and is formed.
As the heat-resistant resin forming described heat-resistant resin coating 13, though be not particularly limited, can enumerate such as, acrylic resin, epoxy system resin, polyurethane series resin, polyolefin-based resins, fluorine resin etc.Wherein, according to the advantage of thermal endurance, resistance to chemical reagents, preferably use the fluorine resin doing substrate with tetrafluoroethene or PVF vinyl ethers.And then for a change the outward appearance of exterior material makes design improve, in described heat-resistant resin, also can add the additive of particulate (silicon dioxide, acrylic pearl etc.), ink etc.
As described resin-coated method, though be not particularly limited, can enumerate such as, gravure roll method, inverse roller coating process, lip rolling method, mould Tu Fa etc.The thickness of described heat-resistant resin coating 13 is preferably set to 0.1 μm ~ 40 μm.Wherein, the thickness of described heat-resistant resin coating 13 is more preferably set as 0.1 μm ~ 20 μm.
Also can be the structure of outer surface at described outside layer 2 and/or inner surface (face of metal foil layer 4 side) stacked evaporation layer.By arranging such evaporation layer, further excellent moisture shielding and further excellent electrolyte diffusion preventing can be guaranteed.The material that described evaporation layer is preferably selected from the group that metal, metal oxide and fluoride form at least a kind formed.As described metal, though be not particularly limited, can enumerate such as, aluminium, chromium, zinc, nickel, gold, silver, platinum etc.In addition, as described metal oxide, though be not particularly limited, can enumerate such as, aluminium oxide, silicon dioxide, titanium dioxide, zirconia etc.As described fluoride, though be not particularly limited, can enumerate such as, magnesium fluoride etc.Wherein, the material (deposition material) forming described evaporation layer is particularly preferably selected from the material of in the group that aluminium, aluminium oxide and silicon dioxide forms at least a kind.
As described 1st bond layer 5, though be not particularly limited, can enumerate such as, polyurethane adhesive oxidant layer, polyester-polyurethane bond layer, polyether-polyurethane bond layer etc.The thickness of described 1st bond layer 5 is preferably set to 1 μm ~ 5 μm.Wherein, according to filming, the light-weighted viewpoint of exterior material, the thickness of described 1st bond layer 5 is particularly preferably set as 1 μm ~ 3 μm.
As described 2nd bond layer 6, though be not particularly limited, the bond layer illustrated in above-mentioned 1st bond layer 5 can be used as, preferably use the polyolefin bond layer do not expanded because of electrolyte.The thickness of described 2nd bond layer 6 is preferably set to 1 μm ~ 5 μm.Wherein, according to filming, the light-weighted viewpoint of exterior material, the thickness of described 2nd bond layer 6 is particularly preferably set as 1 μm ~ 3 μm.
The applying method of described screen 10 (forming screen 10 formed by the coat of metal 8 on the surface of at least either side of metal foil layer 4) and described outside layer 2 (heat-resistant resin thin layer 12, heat-resistant resin coating 13 etc.), though be not particularly limited, recommendation is called the method for dry lamination.Specifically, at the upper surface of screen 10 or the lower surface of outside layer 2, or the face of both sides at them, the 1st bonding agent of coating modulation, and make solvent evaporation drying be after epithelium, screen 10 and outside layer 2 are fitted.Then, it is made to harden according to the curing condition of the 1st bonding agent.Therefore, screen 10 can engage with outside layer 2 across the 1st bond layer 5.Further, as the coating means of the 1st bonding agent, gravure coating method, inverse roller coating process, lip rolling method etc. can be illustrated as.
The applying method of described screen 10 (forming screen 10 formed by the coat of metal 8 on the surface of at least either side of metal foil layer 4) and the non-extension film 3 of described thermoplastic resin, though be not particularly limited, but can be identical with the laminating of outside layer 2 with above-mentioned screen 10, can illustrate such as at coating the 2nd bonding agent and after making its drying, the dry lamination method of laminating screen 10 and the non-extension film layer 3 of thermoplastic resin.
In described thermoplastic resin layer 3 and described outside layer 2, also can add containing additive.As such a additive, though be not particularly limited, but can enumerate such as, prevent being adhered agent (silicon dioxide, talcum, kaolin, acrylic resin pearl etc.), lubricant (fatty acid amide, wax etc.), antioxidant (hindered phenol etc.) etc.
The thickness of exterior material 1 of the present utility model is preferably set to 30 μm ~ 80 μm.Equaling 80 μm by being set smaller than, gravimetric energy density and the volume energy density of the electrochemical appliance 30 using this exterior material 1 exterior can be improved.Wherein, the thickness of described exterior material 1 is preferably set to 30 μm ~ 65 μm.
And, in exterior material 1 of the present utility model, described outside layer 2, be not necessary structure sheaf, the face of the side of described screen 10 (forming screen 10 formed by the coat of metal 8 on the surface of at least side of metal foil layer 4) can be adopted across the 2nd bond layer 6 integrated structure stacked with thermoplastic resin non-extension film layer (la m) 3.
In addition, in the above-described embodiment, be provided with the structure of the 1st bond layer 5 and the 2nd bond layer 6 though adopt, these two-layer 5,6, all not necessarily structure sheaf, also can adopt the structure not arranging these.
In addition, exterior material 1 of the present utility model, is not particularly defined to the lit-par-lit structure shown in Fig. 1 ~ 4, further can add layer to improve the function as exterior material yet.
By the exterior material 1 (deeply extend shaping, bulging shaping etc.) of the present utility model that is shaped, thus outer profiled shell used for electrochemical equipment (battery case etc.) can be obtained.
Then, an execution mode of electrochemical appliance of the present utility model 30 as shown in Figure 5,6.As Fig. 5, shown in 6, in the housing recess of the outer profiled shell 1A being shaped obtained by exterior material 1 of the present utility model, be accommodated with the electrochemical appliance main part (electrochemical element) 31 of roughly rectangular shape, above this electrochemical appliance main part 31, configure the inside (downside) of exterior material 1 of the present utility model side layer 3 side in the inner, by the peripheral part of the la m 3 by this plane exterior material 1, with the la m 3 of the flange part (sealing peripheral part) 29 of described outer profiled shell 1A, engaged by heat-sealing and sealed, thus form electrochemical appliance 30 of the present utility model.
In Figure 5,39 is peripheral parts of described exterior material 1, engages the heat-sealing portion of (deposition) with the flange part (sealing peripheral part) 29 of described outer profiled shell 1A.
As described electrochemical appliance main part 31, though be not particularly limited, can enumerate such as, battery main body portion, capacitor main body portion, electric storage means main part etc.
The width in described heat-sealing portion 39 is preferably set to and is more than or equal to 0.5mm.Equaling 0.5mm by being set greater than, can reliably seal.Wherein, the width in described heat-sealing portion 39 is preferably set to 3mm ~ 15mm.
Embodiment
Then, although be described specific embodiment of the utility model, the utility model is not particularly limited to these embodiments.
< embodiment 1 >
Electroless nickel plating (Kanigen plating) is carried out by the soft aluminium foil (the soft alloy foil of JISH4000 defined A8079) 4 to thickness 15 μm, form the nickel coating 8 of thickness (T) 2 μm respectively on the two sides of described soft aluminium foil 4, thus to obtain thickness be aluminize paper tinsel (screen 10) in the two sides of 19 μm.
Then, to aluminize on described two sides the two sides of paper tinsel (screen 10), after the chemical conversion treatment solution that coating phosphoric acid, polyacrylic acid (acrylic resin), chromium (III) salt compound, water, alcohol are formed, by carrying out 150 DEG C of dryings, thus prepare two sides and be formed with the two sides changing into epithelium and aluminize paper tinsel.This one side changing into the chromium adhesion amount of epithelium is 5mg/m 2.
Then, be formed with the two sides changing into epithelium to aluminize the face of side of paper tinsel on described two sides, coating two-package curing type polyester-polyurethane system resin adhesive, the 1st bond layer 5 is formed after making it dry, 2 axle extension polyester films 2 of the surperficial coating thickness 12 μm of the 1st bond layer 5, simultaneously in the face of the opposite side of described aluminium foil, (Acid denaturation polypropylene is as host for coating two-package curing type polyolefin bonding agent, hexamethylene diisocyanate is as the two-package curing type bonding agent of curing agent), the 2nd bond layer 6 is formed after dry, on the surface of the 2nd bond layer 6, the non-extended polypropylene film 3 of coating thickness 25 μm.By being placed under 40 DEG C of environment 3 days (carrying out maintenance) by this duplexer, exterior material used for electrochemical equipment (thickness 62 μm) 1 as shown in Figure 1 can be obtained.
< embodiment 2 >
Except using the soft alloy foil of the soft alloy foil displacement thickness 15 μm of thickness 7 μm, identical with embodiment 1, obtain exterior material used for electrochemical equipment (thickness 54 μm) 1 as shown in Figure 1.
< embodiment 3 >
Except the thickness T of nickel coating 8 is changed to except 0.5 μm, identical with embodiment 1, obtain exterior material used for electrochemical equipment (thickness 59 μm) 1 as shown in Figure 1.
< embodiment 4 >
That soft aluminium foil (the soft alloy foil of A8079 of JIS H4000 defined) 4 to thickness 15 μm carries out electroless nickel plating (Kanigen plating) as two sides paper tinsel of aluminizing, after making the two sides of described soft aluminium foil form the nickel coating 8 of thickness 1 μm respectively, and then carry out the tin coating that electroless plating tin makes the further stacked thickness 1 μm of two sides difference, thus to obtain thickness be aluminize paper tinsel in the two sides of 19 μm, aluminize except paper tinsel except using above-mentioned gained two sides, identical with embodiment 1, obtain exterior material used for electrochemical equipment (thickness 62 μm) 1 as shown in Figure 1.
< embodiment 5 >
The one side of nickel coating 8 forming thickness 2 μm except the one side being used in soft aluminium foil is aluminized paper tinsel, aluminizes beyond paper tinsel to replace two sides, identical with embodiment 1, obtains exterior material used for electrochemical equipment (thickness 60 μm) 1 as shown in Figure 2.Further, aluminize surfacing 8 side of paper tinsel and 2 axle extension polyester films 2 of one side are fitted (with reference to Fig. 2).
< embodiment 6 >
Using tetrafluoroethene and vinyl acetate co-polymer as host resin, toluene di-isocyanate(TDI) (TDI) and hexamethylene diisocyanate (HDI) are using the mixing of the ratio of quality 1:1 ratio as curing agent, by host resin 100 mass parts, the mixing of described curing agent 18 mass parts, obtain coating resin (heat-resistant resin).
Then, ethyl acetate is being added as solvent using in described coating resin (heat-resistant resin) 80 mass parts, barium sulfate 10 mass parts, the formed resin combination of pelletized silica 10 mass parts mixing, adjust its solid amount and become 19 quality %, thus make resin solution.
Then, form the two sides changing into epithelium to aluminize the face (surface of coating 8) of side of paper tinsel on the two sides of embodiment 1 gained, use gravure roll method that above-mentioned resin solution coating is also dry thereon, the heat-resistant resin coating 13 that stacked thickness is 2 μm is obtained after making its drying, simultaneously in the face (surface of coating 8) of the opposite side of described aluminium foil, (Acid denaturation polypropylene is as host for coating two-package curing type polyolefin bonding agent, hexamethylene diisocyanate is as the two-package curing type bonding agent of curing agent), the 2nd bond layer 6 is formed after dry, to the surface of the 2nd bond layer 6, the non-extended polypropylene film 3 of coating thickness 25 μm.By being placed under 40 DEG C of environment 3 days (carrying out maintenance) by this duplexer, exterior material used for electrochemical equipment (thickness 50 μm) 1 as shown in Figure 4 can be obtained.
< comparative example 1 >
Except using the two sides of soft aluminium foil (the soft alloy foil of A8079 of JIS H4000 defined) displacement thickness 19 μm of thickness 15 μm to aluminize except paper tinsel, identical with embodiment 1, obtain exterior material used for electrochemical equipment.
< comparative example 2 >
Except using the two sides of soft aluminium foil (the soft alloy foil of A8079 of JIS H4000 defined) displacement thickness 19 μm of thickness 40 μm to aluminize except paper tinsel, identical with embodiment 1, obtain exterior material used for electrochemical equipment.
[table 1]
[table 2]
[table 3]
The exterior material each used for electrochemical equipment of above-mentioned gained is used to make battery (simulated battery) as described below.First, exterior material is cut into the size of vertical 120mm × horizontal 100mm, for the exterior material that this cuts, mould formed by movable type and fixed is used to carry out embossing shaping, make on the upside of it open, and for indulging the roughly rectangular shape of 100mm × horizontal 80mm × dark 2mm, thus make the outer profiled shell 1A (with reference to Fig. 6) with flange part 29 around.Further, this embossing shaping is the inner surface of the bottom surface of the roughly rectangular shape making to open above is non-extended polypropylene film (la m) 3.On the other hand, also make unreal flower of exerting pressure and be shaped, size is the crop product (hereinafter, referred to as " plane exterior material ") (with reference to Fig. 6) of the exterior material 1 of vertical 120mm × horizontal 100mm.
The soft Copper Foil of the soft aluminium foil of thickness 30 μm, the polypropylene film of thickness 100 μm, thickness 30 μm is carried out stratiform coincidence, and the simulation electrode of size for vertical 95mm × horizontal 75mm is made in punching press, by stacked for 10 these simulation electrode, obtain electrochemical appliance main part (simulation product) 31 (with reference to Fig. 6).
Thus, as shown in Figure 5, described electrochemical appliance main part 31 is packed in the embossed portion of the roughly rectangular shape opened above of described outer profiled shell 1A, then make described outer profiled shell 1A and described plane exterior material 1 with mutual la m 3 toward each other and overlap, by the la m 3 of the peripheral part of the la m 3 of described plane exterior material 1 and the flange part 29 of described outer profiled shell 1A, 3 limits in its 4 limit are heated to 200 DEG C, the pressure implementing 3 seconds 0.3MPa with metal hot plate carries out heat-sealing joint, after forming heat-sealing portion 39, being positioned over dew point is in the hothouse of-60 DEG C 24 hours.
Then, in the hothouse that dew point is-60 DEG C, by the opening portion on 1 limit unassembled in described heat sealing zoarium, use syringe by electrolyte (at ethylene carbonate: dimethyl carbonate: in the mixed volume ratio of the dimethyl carbonate mixed carbonate ester mixed by 1:1:1, add LiPF 6the LiPF of rear gained 6concentration is the electrolyte of 1 mole/L) after 10mL internally injects and drips, under the decompression state of 0.086MPa, by unassembled 1 edge of described heat sealing zoarium, the pressure implementing 3 seconds 0.3MPa with the metal hot plate being heated to be 200 DEG C carries out heat-sealing joint, after having sealed, obtain battery (simulated battery) 30 as shown in Figure 5.
To the battery obtained as mentioned above (simulated battery), according to following evaluation test method, carry out the assessment of the moisture shielding obtained based on the amount of moisture mensuration in the electrolyte of simulated battery inside, and the assessment of electrolyte diffusion preventing.Acquired results as Table 2,3.
The evaluation test method > of < moisture shielding
9 samples (simulated battery) are prepared respectively by each embodiment, each comparative example, 40 DEG C, the 1st constant temperature and humidity cabinet of humidity 90%, 60 DEG C, the 2nd constant temperature and humidity cabinet of humidity 90%, 80 DEG C, configure 3 respectively in the 3rd constant temperature and humidity cabinet of humidity 90% after, 1 is taken out through 1 week, 1 is taken out through 2 weeks, 1 is taken out through 3 weeks, use syringe that the electrolyte of inside battery is taken out 1mL respectively, and use the amount of moisture in karl Fischer moisture teller (Ping Zhao industry limited company system " AQ2250 ") mensuration electrolyte.
In the result of table 2, though compare with (before the on-test) amount of moisture at initial stage, amount of moisture after 1 week, arbitrary sample is all significantly increased, but this can think that the micro-moisture stripping contained by polypropylene film of simulated battery or exterior material is in electrolyte.Compare with the result (amount of moisture after 1,2,3 week) of comparative example 1, use the simulated battery that the exterior material of embodiment 1 ~ 5 is formed, there is no extreme (essence) moisture to increase, can confirm that there is excellent moisture shielding effect by exterior material of the present utility model.
The evaluation test method > of < electrolyte diffusion preventing
Prepare 3 samples (artificial battery) respectively by each embodiment, each comparative example, use electronic balance to measure respective quality (hereinafter, referred to as " initial stage quality ").Then, respectively each sample is put into the dish of polypropylene, configure 1 respectively in the 1st constant temperature and humidity cabinets of 40 DEG C, the 2nd constant temperature and humidity cabinet of 60 DEG C, the 3rd constant temperature and humidity cabinet of 80 DEG C after, took out after 1 week separately and carry out quality determination again, and put back to rapidly this thermostat.Quality determination is carried out similarly after 2 weeks, after 3 weeks.Now, quality only reduces electrolyte and spreads the amount of oozing out, and electrolyte is without mass conservation when oozing out.
X={ (quality after 1 week)-(initial stage quality) } ÷ (initial stage quality) × 100
Y={ (quality after 2 weeks)-(initial stage quality) } ÷ (initial stage quality) × 100
Z={ (quality after 3 weeks)-(initial stage quality) } ÷ (initial stage quality) × 100
Mass change X (%) after 1 week, the mass change Y (%) after 2 weeks, mass change Z (%) after 3 weeks, calculated by above-mentioned formula respectively.
As shown in table 1 ~ 3, use the battery (simulated battery) that the exterior material used for electrochemical equipment of the embodiment 1 ~ 6 involved by the utility model is formed, compare with the exterior material of the comparative example 1 not arranging the coat of metal, even if the thickness of exterior material identical (carrying out lightweight), the utility model also has excellent moisture shielding, has the diffusion preventing of excellent electrolyte simultaneously.Namely, use the battery (simulated battery) that the exterior material used for electrochemical equipment of the embodiment 1 ~ 6 involved by the utility model is formed, simultaneously completely can have excellent moisture shielding, excellent electrolyte diffusion preventing, fully light-weighted three advantages.
On the other hand, do not arrange the exterior material of the comparative example 1 of the coat of metal, though there is lightweight, moisture shielding is inferior, and electrolyte diffusion preventing is also inferior.In addition, the exterior material of comparative example 2, although have excellent moisture shielding and the electrolyte diffusion preventing of excellence, cannot reach lightweight.Like this, comparative example 1,2 simultaneously completely cannot have excellent moisture shielding, excellent electrolyte diffusion preventing, fully light-weighted three advantages.
Further, the thickness of the coat of metal is the amount of moisture of embodiment 3 after 1,2,3 week of 0.5 μm, and compared with being the embodiment 1 of the 2 μm amount of moisture after 1,2,3 week with the thickness of the coat of metal, the known coat of metal is more thick more can improve moisture shielding surname.
In addition, the thickness of the coat of metal is the mass change of embodiment 3 after 1,2,3 week of 0.5 μm, compared with being the embodiment 1 of the 2 μm mass change after 1,2,3 week with the thickness of the coat of metal, the known coat of metal is more thick more can improve electrolyte diffusion preventing.
The possibility that industry utilizes
Exterior material used for electrochemical equipment involved by the utility model, such as, is suitable as battery exterior material, capacitor exterior material uses, but and for being particularly limited to such purposes.Wherein, the exterior material used for electrochemical equipment involved by the utility model, is suitable as the exterior material of the small electrical chemical devices of 30mA ~ 500mA capacity.
Electrochemical appliance of the present utility model, is suitable as, such as:
1) Portable device such as smart mobile phone, flat computer use lithium polymer battery, lithium ion battery,
Lithium-ion capacitor, double electric layer capacitor
2) power supply of motor vehicle driven by mixed power, electric motor car etc.
3) the electric power storage battery used or the capacitor etc. of wind power generation, solar power generation, electricity consumption at night, but be not limited to this purposes.
The application is willing to the claim of priority of No. 2014-60266 based on the Japanese patent application laid that on March 24th, 2014 proposes, and its disclosure directly forms a application's part.
Term used herein and explanation be illustrate that the execution mode involved by the utility model uses, but the utility model are not limited thereto.If in right of the present utility model, then allow the various distortion in the right that the utility model is asked.
Description of reference numerals
1 ... exterior material used for electrochemical equipment
2 ... outside layer
3 ... the non-extension film layer (la m) of thermoplastic resin
4 ... metal foil layer
5 ... 1st bond layer
6 ... 2nd bond layer
8 ... the coat of metal
10 ... screen
12 ... heat-resistant resin thin layer
13 ... heat-resistant resin coating
30 ... electrochemical appliance
31 ... electrochemical appliance main part (electrochemical element)
T ... the thickness of coating.

Claims (10)

1. an exterior material used for electrochemical equipment, it comprises: metal foil layer and the non-extension film layer of thermoplastic resin as la m, is characterized in that,
The coat of metal is formed on the surface of at least side of described metal foil layer.
2. an exterior material used for electrochemical equipment, it comprises: outside layer, as the thermoplastic resin non-extension film layer of la m and the metal foil layer that is disposed between described outside layer and described la m, it is characterized in that,
The coat of metal is formed on the surface of at least side of described metal foil layer.
3. the exterior material used for electrochemical equipment described in claim 2, wherein,
Described outside layer is heat-resistant resin thin layer.
4. the exterior material used for electrochemical equipment described in claim 2, wherein,
Described outside layer is the heat-resistant resin coating that coating heat-resistant resin is formed.
5. the exterior material used for electrochemical equipment described in any one in Claims 1 to 4, wherein,
The thickness of described metal foil layer is less than 30 μm for being more than or equal to 5 μm.
6. the exterior material used for electrochemical equipment described in any one in Claims 1 to 4, wherein,
The thickness of the described coat of metal is 0.5 μm ~ 5 μm.
7. the exterior material used for electrochemical equipment described in any one in Claims 1 to 4, wherein,
The described coat of metal is the coating be made up of the metal material being selected from group that nickel, zinc, tin, chromium and cobalt form at least a kind.
8. the exterior material used for electrochemical equipment described in any one in Claims 1 to 4, wherein,
The thickness of described exterior material is 30 μm ~ 80 μm.
9. the exterior material used for electrochemical equipment described in any one in Claims 1 to 4, wherein,
The described coat of metal to be the thickness be made up of the metal material being selected from group that nickel, zinc, tin, chromium and cobalt form at least a kind the be coating of 0.5 μm ~ 5 μm.
10. an electrochemical appliance, is characterized in that, possesses:
Electrochemical appliance main part; And
Exterior material used for electrochemical equipment described in any one in claim 1 ~ 9,
Described electrochemical appliance main part is undertaken exterior by described exterior material.
CN201520151594.6U 2014-03-24 2015-03-17 Electrochemical appliance is with adorning material and electrochemical appliance outward Active CN204741032U (en)

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