CN106098969A - Electrical storage device - Google Patents
Electrical storage device Download PDFInfo
- Publication number
- CN106098969A CN106098969A CN201610270839.6A CN201610270839A CN106098969A CN 106098969 A CN106098969 A CN 106098969A CN 201610270839 A CN201610270839 A CN 201610270839A CN 106098969 A CN106098969 A CN 106098969A
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- storage device
- electrical storage
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4235—Safety or regulating additives or arrangements in electrodes, separators or electrolyte
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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
-
- 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
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- 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
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- 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
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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
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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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
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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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/578—Devices or arrangements for the interruption of current in response to pressure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/20—Pressure-sensitive devices
-
- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Secondary Cells (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
The present invention provides a kind of electrical storage device, possess, apparatus main body portion (60) and two external packing bodies of this main part of collecting, described external packing body (50) has metal foil layer (2, 12) and be laminated in the heat sealability resin bed (4 in a face of this metal foil layer, 14), the conductive part (54 not covered by described heat sealability resin bed it is provided with in the local in the one face of described metal foil layer, 56), the positive pole (61) in apparatus main body portion electrically connects with the conductive part (56) of one external packing body, the negative pole (62) in apparatus main body portion electrically connects with the conductive part (54) of another external packing body described, positive pole is electrically connected by being in the state contacted with described conductive part (54) with at least one electrode (62) in negative pole.When intrinsic pressure rising, the conductive part (54) and the electrode (62) that are in contact condition separate, and thus cut off conducting.
Description
Technical field
The present invention relates to return as mobile device accumulator, storage battery loaded onto vehicle, regenerated energy
The electrical storage device of the accumulator of receipts, capacitor (electric capacity) etc..
It should be noted that in the specification and claims, term " contacts " and refers to
Electrical storage device (battery etc.) causes intrinsic pressure rising because of produced gas savings and then makes
Contain when the external packing body in apparatus main body portion outwards heaves, this conductive part of electrical connection and electricity
Pole is in the state that can separate, thus, this term " contacts " and comprises such as " tacky state "
Deng, but do not comprise the joint utilizing bonding agent to be formed, the joint that formed by ultrasound wave etc. engages.
Background technology
Lithium rechargeable battery is widely used as such as notebook computer, videocorder, mobile phone, electronic
The power supply of automobile etc..This lithium rechargeable battery uses, and surrounds battery main body portion with housing
The structure of (comprising the main part of positive pole, negative pole and electrolyte) surrounding.This shell body material is (outer
Package material) known have such as by the outer layer being made up of heat-resistant resin film, aluminium foil layer, by thermoplastic
Property resin molding constitute internal layer is the most bonding and the structure of integration.
But, lithium rechargeable battery etc. exists following situation: when overcharging or
Excessive temperature rise constantly, easily produces gas in battery main body portion, thus gas gradually put aside in
The inner space covered by exterior material, makes the intrinsic pressure rising within exterior material.Worrying
, this intrinsic pressure rising is the most, the most more there will be the situation that exterior material ruptures, thus, carry
Go out and have the technology preventing exterior material from rupturing.
Such as, patent documentation 1 is the release mechanism of a kind of laminated cell, described layer-built battery
It is by the respective outer peripheral edge of shaping sheet material being made up of two overlapped laminate
The inside of the external package casing that portion is bonded with each other houses generating element and electrolyte and constitutes
, in described release mechanism, it is provided with at described external package casing and connects with inside it and from side
The protuberance that edge highlights outward, and possess relief valve, this relief valve is included in described prominent
Go out to be formed at portion the steam vent on two at least one described shaping sheet materials shaped in sheet material
It is crimped on the peritreme portion of this steam vent with flexibility and closes the valve body of described steam vent.
Patent documentation 1: Japanese Unexamined Patent Publication 2007-157678 publication
Summary of the invention
But, as above-mentioned conventional art, it is provided with for making generation inside external packing body
In the case of gas escapes into the relief valve mechanism outside external packing body, need to arrange this safety
, there is the problem that manufacturing process is complicated, productivity is the lowest in the new operation of valve system.
The present invention makes in view of this technical background, it is therefore intended that provide a kind of electric power storage dress
Putting, it is when making intrinsic pressure rising because producing gas, cuts off the conductive part (gold of external packing body
Belong to paper tinsel exposed portion) and the electrode in apparatus main body portion between conducting, and can prevent by further
Press liter external packing body caused to rupture.
In above-mentioned conventional art, by making produced gas from having steam vent and valve body
Relief valve escapes into outside, prevents the exterior material caused by intrinsic pressure rising from rupturing.On the contrary, originally
Applicant is it is contemplated that use make because putting aside produced gas when intrinsic pressure rising can be every
The structure of disconnected conducting, by forming such not on-state, it is suppressed that produces further, long-pending
Store gas thus prevent rupturing of external packing body.
In order to realize described purpose, the present invention provides techniques below scheme.
(1) electrical storage device possesses apparatus main body portion, houses two outsourcings in this apparatus main body portion
Dress body, described external packing body has metal foil layer, is laminated in the hot melt in this one face of metal foil layer
Connecing property resin bed, is provided with not by described hot melt in the local in the one face of described metal foil layer
The conductive part that connecing property resin bed covers, is arranged as opposed to the most each other at heat sealability resin bed
Described two external packing bodies between space house described apparatus main body portion, described two outsourcings
The heat sealability resin bed of the circumference of dress body engages to each other and seals, described apparatus main body portion
Positive electrical be connected to the conductive part of a described external packing body, the negative pole in described apparatus main body portion
It is electrically connected to the conductive part of another described external packing body, at least in described positive pole and negative pole
Individual electrode is in the state contacted with described conductive part and carries out described electrical connection.
(2), in the electrical storage device as described in preceding paragraph (1), described external packing body also has stacking
In the heat-resistant resin layer in another face of described metal foil layer, another of described metal foil layer
The local in face is provided with the portion of terminal not covered by described heat-resistant resin layer.
(3), in preceding paragraph (1) or the electrical storage device described in (2), described external packing body is at bag
Include and form the region formation of the conductive part of electrical connection by being in described contact condition to described
The depressed part of side, apparatus main body portion depression.
(4) in preceding paragraph (1)～the electrical storage device according to any one of (3), by being in
State contact condition and form described conductive part and the electrode of electrical connection, by means of applying conductive
Compositions and the coating layer that formed is in the state of contacting with each other.
(5), in the electrical storage device described in any one of preceding paragraph (1)～(4), contain described
Intrinsic pressure in the space in apparatus main body portion for atmospheric pressure below.
(6) in the electrical storage device described in preceding paragraph (5), under the air pressure atmosphere less than atmospheric pressure
Carry out the heat sealability resin bed of described circumference joint each other.
Invention effect
(1) structure of technical scheme is, at least one party's electrode in positive pole and negative pole passes through
It is in state that the conductive part with external packing body (metal forming exposed portion) contacts and is electrically connected,
When charging time or electric discharge time etc., in the case of apparatus main body portion etc. creates gas, gas
When putting aside the receiving space between external packing body and make intrinsic pressure rising, by making external packing body drum
(conductive part and electrode are in get up to make to be in the conductive part of described contact condition and electrode separation
Contact condition), become not on-state, thus, generation further, savings gas can be suppressed,
It is possible to prevent rupturing of the external packing body caused by intrinsic pressure rising.
(2) in technical scheme, owing to another surface layer at metal foil layer folds thermostability tree
Lipid layer, (in addition to portion of terminal), insulating properties can be substantially ensured that, moreover it is possible to guarantee physical strength, gold
The metal forming being partially provided with not covered by heat-resistant resin layer in another face belonging to layers of foil is sudden and violent
Dew portion (portion of terminal), thus can be energized by this exposed portion (portion of terminal).
(3), in technical scheme, external packing body is comprising by forming electricity with electrode contact
The region of the conductive part connected forms the depressed part caved in side, apparatus main body portion (inward side),
Thus, when producing gas and make intrinsic pressure rising, described depressed part expands and overturns as outward
The protuberance that side is prominent, produces in the space asylum being formed between this protuberance and apparatus main body portion
Gas (space between the protuberance and the apparatus main body portion that are turned into becomes gas accumulation portion).
Additionally, produce gas and make intrinsic pressure rising, the depressed part expanded turn-up of external packing body is outward
The prominent protuberance of side, so that the conductive part being in described contact condition (becomes with electrode separation
For not contact condition), and then become not on-state, thus, can suppress generation further,
Savings gas, can prevent because intrinsic pressure rising external packing body therefore ruptures.
(4) structure of technical scheme is, by (accompanying) by applying conductive compositions
The coating layer formed, it is ensured that conductive part and the contact condition of electrode, by accompanying this coating layer,
The adaptation making conductive part and electrode rises, and can improve further and be in leading under this contact condition
Electricity portion and the conducting state of electrode.
(5) and in the technical scheme of (6), contain in the space in apparatus main body portion is intrinsic pressure
Below atmospheric pressure, thus can improve further and ensure that conducting by being in contact condition
This conductive part and the conducting state of electrode.
Accompanying drawing explanation
Fig. 1 is the sectional view of an embodiment of the electrical storage device representing the present invention.
Fig. 2 is the top view of the electrical storage device of Fig. 1.
Fig. 3 be in the electrical storage device representing Fig. 1 due to because produce gas and make intrinsic pressure rising and then
Make external packing body heave, thus cut off the section view of the state of the conducting of negative conductive portion and negative pole
Figure.
Fig. 4 is the sectional view of other embodiment of the electrical storage device representing the present invention.
Fig. 5 is the top view of the electrical storage device of Fig. 4.
Fig. 6 is due to because producing gas and intrinsic pressure rising and then making in the electrical storage device representing Fig. 4
The depressed part of external packing body is heaved laterally, overturns and has cut off lead for side outward highlights protuberance
The sectional view of the state of the conducting of electricity portion and electrode.
Fig. 7 is the sectional view of the another embodiment of the electrical storage device representing the present invention.Need
Bright, the top view of the electrical storage device of Fig. 7 is identical with Fig. 2, the electrical storage device that Fig. 7 represents
Owing to making intrinsic pressure rising because producing gas, and then make external packing body heave, cut off negative pole
Conductive part is identical with Fig. 3 with the sectional view of the state of the conducting of negative pole.
Description of reference numerals
1 ... electrical storage device；2 ... the first metal foil layer；4 ... the first heat sealability resin bed；8…
First heat-resistant resin layer；9 ... positive terminal portion (metal forming exposed portion)；12 ... the second gold medal
Belong to layers of foil；14 ... the second heat sealability resin bed；18 ... the second heat-resistant resin layer；19 ... negative
Pole portion of terminal (metal forming exposed portion)；50 ... external packing body；54 ... negative conductive portion (metal
Paper tinsel exposed portion)；56 ... positive conductive portion (metal forming exposed portion)；60 ... apparatus main body portion；
61 ... positive pole；62 ... negative pole；71 ... depressed part；75 ... coating layer；81 ... the protuberance after upset
Detailed description of the invention
Fig. 1,2 embodiments of electrical storage device 1 representing the present invention.This electrical storage device 1
It is lamination cased battery, possesses battery unit (bare cell) 60 Hes as apparatus main body portion
Receive the external package casing 45 of this battery unit 60.
As shown in Figure 1, 2, external package casing 45 is by combined body 51 and lid 55
Making, described main body 51 has overlooks for the recess 52 of rectangle with from this recess 52
The flange 53 that extends outward of opening edge, the size of described lid 55 and described main body 51
The peripheral dimension of flange 53 identical.Described recess 52 forms the storage of battery unit 60 and uses
Space.
The constituent material of described main body 51 uses external packing body 50, and this external packing body 50 has
Have: the second metal foil layer 12, be laminated in this second gold medal by the second bond layer (not shown)
Belong to the second heat sealability resin bed 14 in a face (the first face) of layers of foil 12, by first
Bond layer (not shown) is laminated in another face (second of described second metal foil layer 12
Face) the second heat-resistant resin layer 18.On this external packing body 50, in described second metal forming
The local in one face of layer 12 is provided with not bonding by described second heat sealability resin bed and second
The negative conductive portion (metal forming exposed portion) 54 that oxidant layer covers.In present embodiment, described
The central part in one face of two metal foil layers 12 is formed with described negative conductive portion 54.Additionally,
The local in another face of described second metal foil layer 12, is provided with not by described second thermostability
The negative electrode terminal portion (metal forming exposed portion) 19 that resin bed and the first bond layer cover.This reality
Executing in mode, the end in another face of described second metal foil layer 12 is formed with described negative pole
Portion of terminal 19.
The constituent material of described lid 55 uses external packing body 50, and this external packing body has
First metal foil layer 2, it is laminated in this first metal forming by the second bond layer (not shown)
Layer 2 a face (the first face) the first heat sealability resin bed 4, by the first bonding agent
Layer (not shown) is laminated in the of another face (the second face) of described first metal foil layer 2
One heat-resistant resin layer 8.On this external packing body 50, at one of described first metal foil layer 2
Being partially provided with of face is not covered by described first heat sealability resin bed and the second bond layer
Positive conductive portion (metal forming exposed portion) 56.In present embodiment, described first metal forming
The central part in one face of layer 2 is formed with described positive conductive portion 56.Described first metal foil layer
Being partially provided with not by described first heat-resistant resin layer and the first bonding agent of another face of 2
The positive terminal portion (metal forming exposed portion) 9 that layer covers.In present embodiment, described first
The end in another face of metal foil layer 2 is formed with described positive terminal portion 9.
Described main body 51 is that the described external packing body to flat board sheet material does bulging, drawing and forming etc.
Shape and form recess 52, and be flange 53 by the not deformed part deburring of the surrounding of recess 52
Peripheral dimension and obtain.On the other hand, described lid 55 is by described in flat board sheet material
External packing body severing is required size and obtains.The end of the recess 52 of described main body 51
The inner surface in portion is provided with negative conductive portion 54, and the inner surface of lid 55 is provided with positive conductive portion
56 (with reference to Fig. 1).Described positive conductive portion 56 and negative conductive portion 54 are by making external packing body
The exposed portion that the metal foil layer 2,12 of 50 exposes and obtains is formed.Additionally, described positive terminal
Portion 9 and negative electrode terminal portion 19 are exposed by the metal foil layer 2,12 making external packing body 50 and obtain
Exposed portion formed.
Described battery unit 60 be the positive pole 61 by sheet and sheet negative pole 62 across
Shim 63 is laminated, and this battery unit 60 is contained in described two external packing bodies 50
Between space.The end of described positive pole 61 by engaging (ultrasonic bonding, solder,
Utilize that conductive adhesive formed then etc.) in the positive conductive portion 56 of external packing body 50
Make positive pole 61 electrically connect with positive conductive portion 56, make the end of described negative pole 62 become with outward
The state of negative conductive portion 54 contact of package body 50 and make negative pole 62 and negative conductive portion 54
Electrical connection.In present embodiment, the end of negative pole 62 and the contact in negative conductive portion 54 are faces
Contact (with reference to Fig. 1).
Described electrical storage device 1 is the recess 52 by battery unit 60 is accommodated in main body 51
And cover lid 55, with reserving electrolyte inlet flange 53 and the lid 55 to main body 51
Between the heat sealability resin bed 4,14 of contact site seal each other, and injecting electrolyte
After doing, the heat-sealing of described electrolyte inlet is formed sealing.In present embodiment, at ratio greatly
Under the air pressure atmosphere that air pressure is little, described heat sealability resin bed 4,14 is engaged each other and
Formed and seal, in obtained electrical storage device 1, contain in the space in apparatus main body portion 60
Intrinsic pressure identical with atmospheric pressure or less than atmospheric pressure, thus, the end of negative pole 62 and negative
The contact of pole conductive part 54 forms face contact.By forming such contact, negative pole can be made
Guarantee sufficiently conductive between end and the negative conductive portion 54 of 62.
In above-mentioned electrical storage device 1, external packing body 50 is provided with positive terminal portion 9 and negative pole
Portion of terminal 19, thus, can by these portion of terminal 9,19 with other machine with the side that can be energized
Formula is formed and connects.Additionally, connect the conductive part (metal forming of battery unit (apparatus main body portion)
Layer) be formed as the local of external packing body, even if not using lug also can realize energising.By disappearing
Depolarization ear, can realize lightweight and the miniaturization of electrical storage device.
Additionally, in above-mentioned electrical storage device 1, structure is end and the positive conductive portion of positive pole 61
56 engage, and the end of negative pole 62 contacts (rather than joint) with 54, negative conductive portion,
Thus, during charging, electric discharge time etc. time, in the situation creating gas from apparatus main body portion etc.
Under, if gas is gradually put aside and made the intrinsic pressure rising in external package casing 45, it is in described
The negative conductive portion 54 of contact condition and negative pole 62 separate and become the state that do not contacts each other
(with reference to Fig. 3), become not on-state, thus, it is possible to suppression produces further, savings
Gas, thus, can prevent rupturing by the intrinsic pressure external packing body 50 rising and causing.It addition,
End and the positive conductive portion 56 of positive pole 61 engage, therefore, even at external package casing
When intrinsic pressure in 45 rises, end and the positive conductive portion 56 of positive pole 61 does not separates (ginseng
According to Fig. 3).
It addition, in above-mentioned embodiment, use positive pole 61 and positive conductive portion 56 engage,
And negative pole 62 and negative conductive portion 54 are in the structure of contact condition, but be not particularly limited into
Such structure, for example, it may be use negative pole 62 and negative conductive portion 54 to engage, and just
Pole 61 and positive conductive portion 56 are in the structure of contact condition, or use positive pole 61 and just
Pole conductive part 56 is in contact condition, and negative pole 62 is in negative conductive portion 54 and contacts
The structure of state.Regardless of structure, once gas is gradually put aside and is made external package casing 45
In intrinsic pressure rising, then the electrode and the conductive part that are in contact condition can separate, and formation is not turned on
State, can suppress further generation, savings gas, prevent rupturing of external packing body.
Then, other embodiment of the electrical storage device 1 of the present invention is shown in Fig. 4,5.This
In embodiment, use positive pole 61 and positive conductive portion 56 is in surface contact state, negative
Pole 62 and negative conductive portion 54 are in the structure of surface contact state.Additionally, main body 51 (outsourcing
Dress body 50) the region comprising negative conductive portion 54, form side, oriented apparatus main body portion 60 recessed
The depressed part 71 fallen into, and comprise positive conductive portion 56 at lid 55 (external packing body 50)
Region, formed side, oriented apparatus main body portion 60 depression depressed part 71.In present embodiment,
The plan view shape of described depressed part 71 is toroidal (with reference to Fig. 5).Described depressed part 71 can
To be formed by carrying out bulging, drawing and forming etc..In addition to above-mentioned structure, its
Its structure and described embodiment (Fig. 1,2) are identical.Therefore, the description thereof will be omitted.
In Fig. 4, the electrical storage device 1 shown in 5, use positive pole 61 and positive conductive portion 56
It is in surface contact state, negative pole 62 and negative conductive portion 54 and is in the structure of surface contact state,
Thus, once producing gas and make intrinsic pressure rising, no matter the most described depressed part 71 is upward
Depressed part, depressed part the most down, the most as illustrated in fig. 6, heave outward and overturn and be
The protuberance 81 that side is prominent outward, is being formed between this protuberance 81 and apparatus main body portion 60
Space 82 houses and produces gas (between protuberance 81 and apparatus main body portion 60 that upset obtains
Space becomes gas accumulation space 82).Additionally, make intrinsic pressure rising because producing gas and then make
The depressed part 71 of external packing body 50 is heaved and is overturn as the prominent protuberance 81 in side outward, thus,
As shown in Figure 6, the conductive part 54,56 and the electrode 62,61 that are in described contact condition separate
(becoming not contact condition), and become not on-state, thus can suppress generation further,
Savings gas, prevents rupturing of the external packing body 50 caused by intrinsic pressure rising.
Form the side of described depressed part 71, be preferably formed into the face, bottom surface from this depressed part 71
To the peristome of depressed part 71, the inclined plane (ginseng tilted towards foreign side from the interior side of depressed part 71
According to Fig. 4).I.e., in the diagram, bottom surface and the side angulation α of depressed part 71 are preferred
It is set greater than 90 degree, wherein, is further preferably set as the model of 100 °≤α≤160 °
Enclose, the most still the scope of 120 °≤α≤150 °.Described angle [alpha] is set as ratio
In the case of 90 degree big, if because generation, the savings of gas make intrinsic pressure rising, the most described depression
Portion 71 easily overturns the protuberance 81 highlighted for side outward.
The plan view shape of described depressed part 71 is not particularly limited, for example, it is possible to list big
Cause toroidal, generally elliptical shape, further, it is also possible to list quadrangle form, hexagon
The polygonal shapes etc. such as shape.Wherein, the plan view shape of described depressed part 71 is the most substantially
Toroidal or generally elliptical shape.In the case of being circular shape or generally elliptical shape,
When defining intrinsic pressure rising because of generation, savings gas, described depressed part 71 easily turns over
Transfer the protuberance that side is prominent outward to.
The degree of depth of described depressed part 71 is preferably set to 0.5mm～2mm.By be allowed to for
More than 0.5mm, can ensure that the space in the gas accumulation portion formed by the protuberance 81 after overturning,
Overturning because the savings of produced gas makes depressed part 71 heave as prominent convex in side outward
During portion 81, the conductive part and the electrode that are in contact condition separate effectively, intrinsic pressure when rising,
The partition (becoming not on-state) of conducting can be guaranteed effectively.Additionally, by making depression
The degree of depth in portion 71 is below 2mm, it is possible to achieve the slimming of electrical storage device, space saving.
In the present invention, the formation of positive conductive portion (metal forming exposed portion) 56 can be with such as lower section
Formula is carried out.One face (the first face) of described first metal foil layer 2 is by the second bond layer
(not shown) pastes the first heat sealability resin bed 4.Now, except (golden with positive conductive portion
Belong to paper tinsel exposed portion) region outside corresponding part, coating constitutes the viscous of the second bond layer
Connect agent, be not coated with bonding agent in the region corresponding with positive conductive portion (metal forming exposed portion).
When defining such bonding agent uncoated area, paste at the first metal foil layer 2
First heat sealability resin bed 4.Bonding agent can be coated on the first metal foil layer 2 and the first heat
Any one face in the opposite face of weldability resin bed 4.
Then, the first heat sealability resin bed 4 of bonding agent uncoated area it is positioned at by removal,
Form metal forming exposed portion (positive conductive portion) 56.Such as, to the first heat sealability resin bed
The periphery irradiating laser of bonding agent uncoated area in 4, cuts off the first heat sealability resin bed also
It is removed, thus forms metal forming exposed portion (positive conductive portion) 56.The kind of described laser
Class is not limited, and can enumerate such as Solid State Laser with YAG laser as representative, with dioxy
Changing carbon laser is the gas laser etc. of representative.
Form described negative conductive portion (metal forming exposed portion) 54, form positive terminal portion (gold
Belong to paper tinsel exposed portion) 9 and form negative electrode terminal portion (metal forming exposed portion) 19 can be with upper
State the maneuver forming the maneuver in positive conductive portion (metal forming exposed portion) 56 identical to carry out.
It addition, what the formation maneuver of above-mentioned metal forming exposed portion 9,19,54,56 only represented
It is a wherein example, is not particularly limited to such maneuver.
In the present invention, preferred structure is, is using described electrode and described conductive part by place
Form the structure of mutual electrical connection in contact condition in the case of, this electrode and this conductive part
It is (special that the coating layer 75 formed by means of applying conductive compositions is in the state of contacting with each other
You Xuanshi surface contact state) (with reference to Fig. 7).By accompanying such coating each other
Layer 75, can improve the adaptation of conductive part and electrode, thus can improve further and be in contact
The conductive part of state and the conducting state of electrode.Described coating layer 75 is by electrode and leading
Being at least coated with described compositions on any one and being formed in electricity portion.In Fig. 7, coating layer 75
It is to coat the local of conductive part (metal forming exposed portion) and formed but it also may use and be coated with
It is distributed in the structure of whole of conductive part (metal forming exposed portion).
Conductive composition for described coating layer 75 can exemplify, such as, contain binding agent
(adhesive) and the compositions of conductive auxiliary agent, do not do and limit especially.Described binding agent is permissible
It is exemplified as, such as PVDF (Kynoar), SBR (butadiene-styrene rubber), CMC (carboxylic
Methylcellulose sodium salt), PAN (polyacrylonitrile), straight chain type polysaccharide etc., do not do especially
Limit.Additionally, described conductive auxiliary agent can be exemplified as, such as CB (carbon black), CNT (carbon
Nanotube) etc., it is not specially limited.Generally, binding agent is being fitted respectively with this binding agent
Solvent do and dissolve after, be coated, remove solvent with drying process, and form described painting
Layer of cloth 75 is preferably.Expect to do in the way of making described solvent not remain dry.Described group
The coating process of compound can be exemplified as such as intaglio plate coating etc., is not specially limited.Described
The thickness of coating layer 75 is preferably set to 10 μm～50 μm.In order to make conductive part and electrode
Contact and in the case of the two accompanies such coating layer 75 each other, if produce gas
Body and intrinsic pressure rising in making external package casing 45, then by making external packing body heave, make to borrow
Help coating layer and be in the conductive part of contact condition and electrode separation and become the most discontiguous
State, conducting is cut off.
In the present invention, apparatus main body portion 60 is preferably received and right under atmosphere less than atmospheric pressure
The circumference of external packing body makees joint each other and seals.By using such structure, can reduce
The space of resettlement section (recess) 52, becomes and apparatus main body in the space of resettlement section 52 in addition
After portion 60 same volume, due to intrinsic pressure in receiving space can be maintained atmospheric pressure with
Under, external packing body is applied the most inwardly from outside pressure (towards private side), thus,
The adaptation of electrode and the conductive part being in contact condition can be improved, can be formed and be fully contacted
Face contact, it can be ensured that sufficiently turn on.When using this structure such, the most such as,
The circumference of described two external packing bodies is carried out in 0.002MPa (2KPa) atmosphere below
Being engaged with each other of heat sealability resin bed, more preferably at 0.001MPa (1KPa) below
Above-mentioned joint is carried out under atmosphere.It is preferable, however, that be configured to contain described apparatus main body portion 60
Space in inner pressure ratio 0.01MPa (10KPa) little, it is further particularly preferred that set
Scope for 1KPa～10KPa.
It addition, in above-mentioned embodiment, as the battery unit of an example in apparatus main body portion 60
Illustrate is roll type, is not limited to this structure, can be such as, positive pole/shim/negative
3 layer stackup structure (being formed without the type of reel) that pole is constituted.
Additionally, in above-mentioned embodiment, an external packing body 50 is formed with recess 52, but should
The formation of recess 52 is not the necessary structure of the present invention, can be utilized in two external packing bodies
50 structures being not provided with recess, the space accommodation apparatus master between this pair external packing body 50
The circumference of external packing body 50 is also done the structure sealed by body 60 each other.
In the present invention, as long as the material constituting each layer of described external packing body 50 can serve as
The material of the exterior material of electrical storage device, it is possible to use arbitrary material.Preferred material is as follows:
(heat-resistant resin layer)
Constitute the heat-resistant resin of described first and second heat-resistant resin layer (outer layer) 8,18
Use, infusible heat-resistant resin under the heat-sealing temperature when sealing external packing body.Make
The heat sealability that have than constitute heat sealability resin bed is preferably used for described heat-resistant resin
The heat-resistant resin of the fusing point of high more than 10 DEG C of the fusing point of resin, particularly preferably uses and has specific heat
The heat-resistant resin of the fusing point of high more than 20 DEG C of the fusing point of weldability resin.
Described first and second heat-resistant resin layer 8,18 can be illustrated such as polyamide membrane, polyester
Films etc., are preferably used these stretched film.Wherein, from the point of view of formability and intensity viewpoint, especially
Preferably biaxial stretching polyamide film or biaxially oriented polyester film, also or comprise their multilamellar
Film, further preferably pastes biaxial stretching polyamide film and the multilamellar of biaxially oriented polyester film
Film.Described polyamide membrane can be illustrated such as Nylon 6 Film, Nylon 66 Membrane, MXD nylon membrane
Deng, but be not specially limited.Additionally, biaxially oriented polyester film can illustrate biaxial stretch-formed poly-right
Benzene dicarboxylic acid butanediol ester (PBT) film, biaxial stretch-formed polyethylene terephthalate (PET)
Film etc..
Additionally, smooth for the surface of improving described first and second heat-resistant resin layer 8,18
Property and improve and sliding between molding die, preferably coordinate lubricant and/or solid particle
Son.
Thickness the most preferably 9 μm of described first and second heat-resistant resin layer 8,18～50 μm.
By being set as more than described suitable lower limit, can ensure that the sufficient intensity as packing timber,
Further, by being set as below described suitable higher limit, stress when shaping can be reduced, improve
Formability.
(heat sealability resin bed)
The first and second heat sealability resin bed 4,14 as la m is electric for lithium ion secondary
The electrolyte etc. that in pond etc., the corrosivity of use is strong possesses outstanding chemical proofing, and holds
Carry on a shoulder pole the function that packaging material are given heat sealability.
Described first and second heat sealability resin bed 4,14 preferably thermoplastic resin unstretching film.
Described thermoplastic resin unstretching film is not specially limited, from chemical proofing and heat sealability
From the point of view of viewpoint, preferably by polyethylene, polypropylene, olefin copolymer, their sour modifier
Constitute with ionomer.Additionally, olefin copolymer can illustrate EVA (ethane-acetic acid ethyenyl
Ester copolymer), EAA (ethylene-acrylic acid copolymer), EMAA (ethylene-metering system
Acid copolymer).Further, it is also possible to use polyamide membrane (such as nylon 12), polyimides
Film.
Described first and second heat sealability resin bed 4,14 is also identical with described heat-resistant resin layer,
In order to improve the flatness on surface, preferably coordinate lubricant and/or solid particle.
The thickness of described first and second heat sealability resin bed 4,14 is all preferably set to 20 μ
M～80 μm.By being set to more than 20 μm, insulating properties can be substantially ensured that, and, logical
Cross and be set as below 80 μm, resin usage amount can be reduced, can realize reducing cost.Wherein,
The thickness of described first and second heat sealability resin bed 4,14 is the most particularly preferably set as 20 μ
M～50 μm.It should be noted that described first and second heat sealability resin bed can be monolayer,
It can also be multilamellar.Multilayer film can be illustrated in the two-sided stacking the most poly-third of block polypropylene film
The trilamellar membrane of alkene film.
(metal foil layer)
Described first and second metal foil layer 2,12 undertake to external packing body 50 give stop oxygen,
The function of the barrier properties for gases that moisture enters.In the situation that metal forming exposed portion is used as conductive part
Under, described first and second metal foil layer 2,12 uses the metal forming of good conductivity.Can illustrate
Such as aluminium foil, Copper Foil, nickel foil, stainless steel foil or their covering paper tinsel, their annealing paper tinsel
Or unannealed paper tinsel etc..Furthermore it is preferred that done plating by conductive metal such as nickel, stannum, copper, chromium
And the metal forming obtained, such as make to be used as the aluminium foil of plating.Described electric conductivity plating tunicle is only
At least corresponding with the metal forming exposed portion part of metal foil layer to be formed at.Additionally,
Described metal foil layer also implements following chemical conversion treatment to form chemical conversion preferably as base treatment
Tunicle.
(the chemical conversion tunicle of metal foil layer)
The outer layer of stacking external packing body 50 and la m are the layers being made up of resin, although ooze
The amount entered is extremely trace, have from the outside of housing to these resin beds penetrate into light, oxygen,
The worry of liquid, also has and oozes out content (electrolyte of battery, food, medicine from inside
Deng) worry.If these penetrate into thing arrival metal foil layer, the corrosion of metal foil layer can be caused.
It is therefore preferable that form the chemical conversion tunicle that corrosion resistance is high on the surface of metal foil layer 2,12, by
This, it is possible to achieve the corrosion resistance of metal foil layer 2,12 improves.
Described chemical conversion tunicle is by metal foil surface (at least one party surface of metal forming)
The tunicle implementing chemical conversion treatment and formed, for example, it is possible to by metal forming is implemented at chromate
Reason, the chromium-less chemical conversion treatment of use zirconium compounds are formed.Such as,
1) comprise: phosphoric acid,
Chromic acid,
At least 1 selected from the group that the slaine of fluoride and the non-metal salt of fluoride are constituted
Plant the aqueous solution of the mixture of compound.
2) comprise: phosphoric acid,
Select from the group that acrylic resin, chitosan derivative resin and phenolic resinoid are constituted
At least one resin that goes out,
The mixture of at least one compound selected from the group that chromic acid and chromium (III) salt are constituted
Aqueous solution
3) comprise: phosphoric acid,
Select from the group that acrylic resin, chitosan derivative resin and phenolic resinoid are constituted
At least one resin that goes out,
At least one compound selected from the group that chromic acid and chromium (III) salt are constituted,
At least 1 selected from the group that the slaine of fluoride and the non-metal salt of fluoride are constituted
Plant the aqueous solution of the mixture of compound
By in coating above-mentioned 1)～3) in after arbitrary aqueous solution, be dried, enforcement
One-tenth processes.
Described chemical conversion tunicle preferred chromium adhesion amount (adhesion amount of each) is
0.1mg/m2～50mg/m2, particularly preferred 2mg/m2～20mg/m2。
The thickness of described metal foil layer 2,12 is preferably 20 μm～200 μm.By making thickness
Be more than 20 μm, be possible to prevent when manufacturing the calendering when metal forming, heat-sealing time produce pin
Hole, breakage, by making thickness be below 200 μm, when can reduce bulging, drawing and forming
Time stress, formability can be improved.
(the first bond layer)
Described first bond layer is to play metal foil layer 2,12 and constitute the heat-resisting of outer layer
Property the articulate function of resin bed 8,18 layer, for example, it is preferable to use by host polyester tree
The two-package curing type polyester-polyurethane system that the multifunctional isocyanate compound of fat, sclerosing agent is formed
Resin, or comprise the bonding agent of polyether-polyurethane system resin.
(the second bond layer)
Described second bond layer is to play metal foil layer 2,12 and the hot melt of composition la m
The layer of the function that connecing property resin bed 4,14 combines, can illustrate and such as be glued by polyurethane series
Connect agent, acrylic acid series bonding agent, epoxide resin adhesive, polyolefin bonding agent, elasticity
The bond layer that system bonding agent, fluorine system bonding agent etc. are formed.Wherein, acrylic acid is preferably used
It is bonding agent, polyolefin bonding agent, in such a case, it is possible to improve external packing body 50
Electrolyte resistance and water vapor barrier.Additionally, external packing body 50 is being used as battery case
In the case of body, the bonding agent such as acid modified polypropene, acid modified poly ethylene is preferably used.
Additionally, in order to easily determine above-mentioned bonding agent uncoated area, the first bond layer and
Two bond layers can add in above-mentioned bonding agent relative to 100 mass parts bonding agent compositions
The organic system pigment of the scope of 0.1 mass parts～5 mass parts, inorganic series pigments, pigment etc.
Toner.Described organic system pigment is not particularly limited, can illustrate such as C lake red CAN'T, aphthols,
The azo pigment of hansa yellow, dual-azo yellow, benzimidazolone etc., quinophthalone, isoindoline,
The polycycle series pigments such as pyrrolopyrrole, diazine, phthalocyanine blue, phthalocyanine green, lake red C,
Watchung is red waits mordant pigment etc..Additionally, described inorganic series pigments is not particularly limited,
Can illustrate such as carbon black, titanium oxide, calcium carbonate, Kaolin, ferrum oxide, zinc oxide etc..
Additionally, described pigment is not particularly limited, can illustrate such as, trisodium salt (yellow 4)
Deng red pigments class, disodium salts (blue 1 such as xanthein class, disodium salts (red No. 3)
Number) etc. blue pigment class etc..
Additionally, the gross thickness of external packing body 50 is preferably 50 μm～the scope of 300 μm.Always
Thick less than 50 μm, easily produce breakage, pin hole during shaping and when sealing.In addition total thickness
If 300 μm, formability can reduce.
Embodiment
Then, explaining the specific embodiment of the present invention, the present invention is not particularly limited in this
A little embodiments.
<embodiment 1>
Double spread at the aluminium foil of thickness 40 μm comprises polyacrylic acid, phosphoric acid, chromium and fluorine
The chemical synthesis treatment liquid of compound, is dried with 150 DEG C, and making chromium adhesion amount is 3mg/m2。
One topcoating cloth polyester-polyurethane of the aluminium foil (metal foil layer) after described chemical conversion treatment
It it is bonding agent.When this coating, make one of aluminium foil by covering process (stickup masking tape)
Being partially formed as bonding agent uncoated area of the end in face.Then, at this polyester-polyurethane
It it is the biaxial stretching polyamide film (heat-resistant resin of bonding agent coated face stickup thickness 25 μm
Layer).Then, at another face coated acid modified polypropene system bonding agent of described aluminium foil.?
During this coating, by covering process (stickup masking tape), make the central authorities in another face of aluminium foil
Portion is formed as bonding agent uncoated area.Then, in the bonding agent coating of this acid modified polypropene system
The un-stretched polypropylene film (heat sealability resin bed) of thickness 40 μm is pasted in face, thus obtains
Duplexer.
Then, to the periphery of the bonding agent uncoated area of heat-resistant resin layer in described duplexer
Irradiating laser, cuts off heat-resistant resin layer, removes the thermostability being positioned at bonding agent uncoated area
Resin bed, forms portion of terminal.Additionally, to heat sealability resin bed bonding in described sandwich
The periphery irradiating laser of agent uncoated area, cuts off heat sealability resin bed, and removing is positioned at bonding
The heat sealability resin bed of agent uncoated area, forms conductive part, thus obtains flat board sheet material
External packing body 50.Prepare two these external packing bodies 50.
Then, use described two external packing bodies, use the most both it is stated that method, knot
Structure, makes Fig. 1, the battery of structure shown in 2.Electrolyte is used in equal-volume than mixing
Ethylene carbonate (EC), dimethyl carbonate (DMC), ethylmethyl carbonate (EMC)
In the mixed solvent obtained, the concentration with 1 mole/L dissolves lithium hexafluoro phosphate (LiPF6) and obtain
To electrolyte and this electrolyte is housed together with battery unit by described 2 outer package bodily forms
In the receiving space become.Additionally, the heat sealability resin of the circumference of described two external packing bodies
It is to carry out under the air pressure atmosphere of the 1KPa forced down than air that layer heat-sealing each other engages.
<embodiment 2>
Prepare two with the external packing body identical regulation external packing body being made in embodiment 1, use
These two external packing bodies, use the most both it is stated that method, structure, make Fig. 4,5 institutes
Show the battery of structure.Electrolyte uses electrolyte same as in Example 1.It should be noted that
Bottom surface and the side angulation α of depressed part 71 are set as 150 °, and, depressed part
The depth-set of 71 is 1mm.Additionally, the thermal welding of the circumference of described two external packing bodies
Property resin bed each other heat-sealing engage be to carry out under the air pressure atmosphere of the 1KPa forced down than air
's.
With following assessment method, in the battery to the embodiment 1,2 using above-mentioned process to obtain
The preventing property that ruptures of external packing body evaluate.
<rupturing preventing property assessment method>
Promote the decomposition (generation decomposition gas) of electrolyte by carrying out excessive temperature rise, make each
The intrinsic pressure of battery the most slowly rises, the situation of research battery now.
Use the battery of embodiments of the invention 1, be warmed up to 90 DEG C, utilize the long-pending of decomposition gas
Storing, make intrinsic pressure when defining rising, external packing body is heaved outward, thus, formed contact
Negative conductive portion 54 and the negative pole 62 of state separate, and become the state not contacted each other and (cut off
Turn on and become not on-state) (with reference to Fig. 3).It should be noted that be bonded with each other
Positive conductive portion 56 and the positive pole 61 do not separate, but maintain engagement state (reference
Fig. 3).
Use the battery of embodiments of the invention 2, be warmed up to 90 DEG C, utilizing decomposition gas
Savings, makes intrinsic pressure when defining rising, and 2 depressed parts 71 are all heaved and overturn as side outward
Prominent protuberance 81, thus, formed conductive part and the electrode separation of contact condition, became each other
Discontiguous state (cut off conducting and become not on-state) (with reference to Fig. 6).
Thus, the battery of embodiments of the invention 1,2 is actually used (charge, electric discharge etc.)
Under state, even if having the gas savings of generation and making the situation of intrinsic pressure rising, also can be intrinsic pressure at this
Cut off conducting after rising, gas can't be produced further, it is therefore possible to prevent external packing body
Rupture.
Industrial applicibility
The concrete example of the electrical storage device of the present invention such as can be exemplified as:
The electrochemical appliance of lithium secondary battery (lithium ion battery, lithium polymer battery etc.) etc.,
Lithium-ion capacitance,
Double layer capacitor etc..
This application claims that filed in 28 days April in 2015, Japanese Patent goes out to be willing to Patent
2015-91042 priority, directly constitutes the part of the application by disclosure of which.
Term as used herein and explanation are the contents for embodiment of the present invention is described, and
The present invention is not constituted restriction.As long as within the scope of the claims, without departing from right
The technological thought required, the present invention allows to make any design and changes.
Claims (12)
1. an electrical storage device, it is characterised in that
Possess apparatus main body portion and house two external packing bodies in this apparatus main body portion,
Described external packing body has metal foil layer and is laminated on a face of this metal foil layer
Heat sealability resin bed, is provided with the most described in the local in the one face of described metal foil layer
The conductive part that heat sealability resin bed covers,
By make heat sealability resin bed the most each other relative in the way of configure described two
Space between external packing body houses described apparatus main body portion, the periphery of described two external packing bodies
The heat sealability resin bed in portion engages to each other and seals,
The positive electrical in described apparatus main body portion is connected to the conductive part of a described external packing body, institute
The negative electricity stating apparatus main body portion is connected to the conductive part of another described external packing body, described just
Pole is in, with at least one electrode in negative pole, the contact condition contacted relative to described conductive part
And carry out described electrical connection.
Electrical storage device the most according to claim 1, wherein,
Described external packing body also has the thermostability in another face being laminated in described metal foil layer
Resin bed, is provided with in the local in another face of described metal foil layer not by described heat-resistant resin
The portion of terminal that layer covers.
Electrical storage device the most according to claim 2, wherein,
Described heat-resistant resin layer is made up of biaxial stretching polyamide film.
Electrical storage device the most according to claim 2, wherein,
Described heat-resistant resin layer is made up of biaxially oriented polyester film.
Electrical storage device the most according to claim 2, wherein,
Described heat-resistant resin layer is by bonding biaxial stretching polyamide film and biaxially oriented polyester film
The multilayer film formed is constituted.
Electrical storage device the most according to claim 1 and 2, wherein,
Described external packing body forms leading of electrical connection by being in described contact condition comprising
The region in electricity portion forms the depressed part to side, described apparatus main body portion depression.
Electrical storage device the most according to claim 6, wherein,
The bottom surface of described depressed part and side angulation are more than 90 degree.
Electrical storage device the most according to claim 6, wherein,
When the bottom surface of described depressed part and side angulation are set to " α ", meet 100 °
≤α≤160°。
Electrical storage device the most according to claim 6, wherein,
The plan view shape of described depressed part is circular or substantially elliptical.
Electrical storage device the most according to claim 1 and 2, wherein,
Formed by being in described contact condition the described conductive part of electrical connection and electrode by
The coating layer formed by applying conductive compositions is in the state of contacting with each other.
11. electrical storage devices according to claim 1 and 2, wherein,
Contain in the space in described apparatus main body portion intrinsic pressure be below atmospheric pressure.
12. electrical storage device according to claim 11, wherein,
Less than under the air pressure atmosphere of atmospheric pressure, carry out the heat sealability resin bed of described circumference
Joint to each other.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-091042 | 2015-04-28 | ||
| JP2015091042A JP6816937B2 (en) | 2015-04-28 | 2015-04-28 | Power storage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106098969A true CN106098969A (en) | 2016-11-09 |
Family
ID=57411311
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620368803.7U Active CN205790079U (en) | 2015-04-28 | 2016-04-27 | Electrical storage device |
| CN201610270839.6A Pending CN106098969A (en) | 2015-04-28 | 2016-04-27 | Electrical storage device |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620368803.7U Active CN205790079U (en) | 2015-04-28 | 2016-04-27 | Electrical storage device |
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|---|---|
| JP (1) | JP6816937B2 (en) |
| KR (1) | KR102537627B1 (en) |
| CN (2) | CN205790079U (en) |
| TW (1) | TWI708416B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106784418A (en) * | 2016-12-16 | 2017-05-31 | 苏州福斯特光伏材料有限公司 | A kind of corrosion-proof layer and its application in lithium battery flexible packaging material |
| CN110998951A (en) * | 2017-08-10 | 2020-04-10 | 仓敷纺绩株式会社 | Electrode sheet manufacturing method, all-solid-state battery, and all-solid-state battery manufacturing method |
| CN115066791A (en) * | 2020-02-07 | 2022-09-16 | 大日本印刷株式会社 | Power storage device and method for manufacturing power storage device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6816937B2 (en) * | 2015-04-28 | 2021-01-20 | 昭和電工パッケージング株式会社 | Power storage device |
| JP6861016B2 (en) * | 2015-11-19 | 2021-04-21 | 三洋化成工業株式会社 | Lithium ion battery |
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Also Published As
| Publication number | Publication date |
|---|---|
| TW201639226A (en) | 2016-11-01 |
| CN205790079U (en) | 2016-12-07 |
| KR102537627B1 (en) | 2023-05-30 |
| KR20160128214A (en) | 2016-11-07 |
| JP6816937B2 (en) | 2021-01-20 |
| TWI708416B (en) | 2020-10-21 |
| JP2016207592A (en) | 2016-12-08 |
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