CN108886117B - Metal terminal adhesion film and battery - Google Patents
Metal terminal adhesion film and battery Download PDFInfo
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- CN108886117B CN108886117B CN201780018097.0A CN201780018097A CN108886117B CN 108886117 B CN108886117 B CN 108886117B CN 201780018097 A CN201780018097 A CN 201780018097A CN 108886117 B CN108886117 B CN 108886117B
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- layer
- metal terminal
- adhesion film
- polypropylene
- thickness
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- 229920002647 polyamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001601 polyetherimide Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- BSWGGJHLVUUXTL-UHFFFAOYSA-N silver zinc Chemical compound [Zn].[Ag] BSWGGJHLVUUXTL-UHFFFAOYSA-N 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- LDHQCZJRKDOVOX-UHFFFAOYSA-N trans-crotonic acid Natural products CC=CC(O)=O LDHQCZJRKDOVOX-UHFFFAOYSA-N 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/105—Pouches or flexible bags
-
- 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
- H01M50/183—Sealing members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/09—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/78—Cases; Housings; Encapsulations; Mountings
- H01G11/80—Gaskets; Sealings
-
- 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
-
- 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
- H01M50/172—Arrangements of electric connectors penetrating the casing
- H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
- H01M50/178—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for pouch or flexible bag cells
-
- 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
- H01M50/543—Terminals
- H01M50/552—Terminals characterised by their shape
- H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
- H01M50/557—Plate-shaped terminals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/02—2 layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/03—3 layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/24—All layers being polymeric
- B32B2250/242—All polymers belonging to those covered by group B32B27/32
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
- B32B2457/10—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
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Laminated Bodies (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The present invention provides a kind of with packaging material and the adaptation of metal terminal is high and electrolyte resistance also excellent metal terminal adhesion film.A kind of metal terminal adhesion film, it is present between the metal terminal being electrically connected with the electrode of cell device and the packaging material of the above-mentioned cell device of encapsulation, above-mentioned metal terminal is made of with adhesion film the laminated body for having at least 1 layer polypropylene layer and at least 1 layer sour modified polypropene layer, above-mentioned acid modified polypropene layer constitutes the surface layer of at least one surface side of above-mentioned metal terminal adhesion film, island structure is observed when observing the section of above-mentioned polypropylene layer using electron micrograph, when aggregate thickness with above-mentioned sour modified polypropene layer is 1, the aggregate thickness of above-mentioned polypropylene layer is in the range below 0.7 or more 3.5.
Description
Technical field
The present invention relates to metal terminal adhesion film and batteries.
Background technique
Various types of batteries are developed at present, but in all batteries, for the batteries such as encapsulated electrode, electrolyte member
The packaging material of part is indispensable component.Currently, made of metal packaging material is used mostly as battery package body, but
In recent years, with the high performance of electric car, hybrid vehicle, PC, camera, mobile phone etc., for electricity
Pond, it is desirable that there is variety of shapes, and require slimming and lightweight.However, the made of metal packaging used mostly at present
Material is difficult to deal with the diversification of shape, and has the shortcomings that lightweight is also limitary.
Then, in recent years, as being readily processible to miscellaneous shape and can be realized slimming, light-weighted packaging
Material, proposing successively lamination has substrate layer/membranaceous laminated body of adhesive layer/barrier layer/heat fusion resin layer.Use this
It, will in the state of making relative to each other positioned at the heat fusion resin layer of packaging material innermost layer when the membranaceous packaging material of sample
Thus the edge part of packaging material encapsulates cell device using packaging material by being hot-melted.
Metal terminal is prominent from the heat seal lands of packaging material, is passed through by the cell device of packaging material encapsulation first with battery
The metal terminal and external electrical connections of the electrode electrical connection of part.That is, in the part that packaging material is heat-sealed, present in metal terminal
Part with heat fusion property resin layer clamping metal terminal state heat-sealing.Metal terminal and heat fusion property resin layer be not each other by
Same material is constituted, therefore at the interface of metal terminal and heat fusion property resin layer, adaptation is easily reduced.
Therefore, between metal terminal and heat fusion property resin layer, sometimes for their adaptation etc. of raising, configuration is viscous
Connecing property film.
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2015-79638 bulletin
Summary of the invention
Technical problems to be solved by the inivention
For such adhesion film, not requiring nothing more than has high adhesion, also requirement pair with packaging material and metal terminal
There is excellent patience in the electrolyte encapsulated by packaging material.
In such a case, the main purpose of the present invention is to provide a kind of with packaging material and metal terminal it is closely sealed
Property high and electrolyte resistance also excellent metal terminal adhesion film.Further, the object of the invention is also to provide one
Kind has used the battery of the metal terminal adhesion film.
For solving the technical solution of technical problem
In order to solve the above-mentioned technical problem the present inventor, has made intensive studies.Itself as a result, it has been found that, following gold
The adaptation for belonging to terminal adhesion film and packaging material and metal terminal is high, and electrolyte resistance is also excellent, the metal end
Son with adhesion film be present in the metal terminal being electrically connected with the electrode of cell device and encapsulate cell device packaging material it
Between, wherein metal terminal adhesion film is by having the lamination of at least 1 layer polypropylene layer and at least 1 layer sour modified polypropene layer
Body is constituted, and above-mentioned acid modified polypropene layer constitutes the surface layer of at least one surface side of above-mentioned metal terminal adhesion film, is utilized
Electron micrograph observes island structure when observing the section of above-mentioned polypropylene layer, with total thickness of sour modified polypropene layer
When degree is 1, the aggregate thickness of polypropylene layer is in the range below 0.7 or more 3.5.The present invention is further based on above-mentioned opinion
Be repeated research and complete.
That is, the present invention provides the invention of following manner.
A kind of 1. metal terminal adhesion films, be present in the metal terminal being electrically connected with the electrode of cell device and
Between the packaging material for encapsulating above-mentioned cell device, wherein
Above-mentioned metal terminal adhesion film is by having the sour modified polypropene layer of at least 1 layer polypropylene layer and at least 1 layer
Laminated body is constituted,
Above-mentioned acid modified polypropene layer constitutes the surface layer of at least one surface side of above-mentioned metal terminal adhesion film,
Island structure is observed when observing the section of above-mentioned polypropylene layer using electron micrograph,
When aggregate thickness with above-mentioned sour modified polypropene layer is 1, the aggregate thickness of above-mentioned polypropylene layer is 0.7 or more
In 3.5 or less range.
2. metal terminal adhesion films as described in item 1 of item, wherein above-mentioned polypropylene layer contains block polypropylene.
3. metal terminal adhesion films as described in item 1 or 2 of item, wherein above-mentioned polypropylene layer is by un-stretched polypropylene
It constitutes.
4. metal terminal adhesion films as described in any one of item 1, wherein above-mentioned polypropylene layer have according to
Secondary lamination has the lamination of the layer being made of random polypropylene, the layer being made of block polypropylene and the layer being made of random polypropylene
Structure.
Metal terminal adhesion film of the item 5. as described in any one of item 1~4, wherein utilize differential scanning calorimetry (DSC)
When measuring above-mentioned metal terminal adhesion film, melting peak is observed in 150 DEG C or more 165 DEG C of ranges below.
Metal terminal adhesion film of the item 6. as described in any one of item 1~5, wherein surveyed using following measuring method
The thickness residual rate of the above-mentioned metal terminal adhesion film obtained is 50% or more:
Prepare the aluminium sheet and above-mentioned metal terminal adhesion film with a thickness of 100 μm；
Measure the thickness A (μm) of above-mentioned metal terminal adhesion film；
In such a way that the length direction and width direction for making above-mentioned aluminium sheet and above-mentioned metal terminal adhesion film are consistent, In
The central part of above-mentioned aluminium sheet stacks above-mentioned metal terminal adhesion film；
Prepare 2 length for being longer than above-mentioned aluminium sheet and width for the metal plate of 7mm, to cover above-mentioned metal terminal bonding
The mode of the entire surface of property film, from the two sides up and down of above-mentioned aluminium sheet and above-mentioned metal terminal adhesion film, with 190 DEG C of temperature,
Face pressure 1.27MPa, time are 3 seconds conditions, are heated and pressurizeed using above-mentioned metal plate, and above-mentioned aluminium sheet and above-mentioned is obtained
The laminated body of metal terminal adhesion film；
Measure the thickness B (μm) for the part of the laminated body being heated and pressed；
Using following formula, the thickness residual rate of above-mentioned metal terminal adhesion film is calculated,
Thickness residual rate (%)=(thickness B-100)/thickness A × 100 of metal terminal adhesion film.
Metal terminal adhesion film of the item 7. as described in any one of item 1~6, wherein above-mentioned metal terminal bonding
Property film flow direction percent thermal shrinkage be 70~90%.
Metal terminal adhesion film of the item 8. as described in any one of item 1~7, wherein above-mentioned packaging material is by least
The laminated body for successively having substrate layer, barrier layer and heat fusion property resin layer is constituted,
Above-mentioned metal terminal is present between above-mentioned heat fusion resin layer and above-mentioned metal terminal with adhesion film.
A kind of 9. batteries of item, have: including at least anode, the cell device of cathode and electrolyte；Encapsulate battery member
The packaging material of part；It is electrically connected respectively with above-mentioned anode and above-mentioned cathode and protrudes the metal end on the outside of above-mentioned packaging material
Son, wherein metal terminal described in any one of item 1~8 is present in above-mentioned metal terminal and above-mentioned packing timber with adhesion film
Between material.
A kind of use of the laminated body of item 10. as metal terminal adhesion film, the laminated body have at least 1 layer polypropylene
Layer and at least 1 layer sour modified polypropene layer,
Above-mentioned acid modified polypropene layer constitutes the surface layer of at least one surface side of above-mentioned metal terminal adhesion film,
Island structure is observed when observing the section of above-mentioned polypropylene layer using electron micrograph,
When aggregate thickness with above-mentioned sour modified polypropene layer is 1, the aggregate thickness of above-mentioned polypropylene layer is 0.7 or more
In 3.5 or less range,
Above-mentioned metal terminal is present on the metal terminal and encapsulation being electrically connected with the electrode of cell device with adhesion film
It states between the packaging material of cell device.
The effect of invention
By means of the invention it is possible to provide, high with the adaptation of packaging material and metal terminal and electrolyte resistance is also excellent
Different metal terminal adhesion film.Further, the metal terminal adhesion film has been used by means of the invention it is possible to provide
Battery.
Detailed description of the invention
Fig. 1 is the schematic depiction top view of battery of the invention.
Fig. 2 is the schematic depiction sectional view of the line A-A ' along Fig. 1.
Fig. 3 is the schematic depiction sectional view of the line B-B ' along Fig. 1.
Fig. 4 is the schematic depiction sectional view of metal terminal adhesion film of the invention.
Fig. 5 is the schematic depiction sectional view of metal terminal adhesion film of the invention.
Fig. 6 is the schematic depiction sectional view of the packaging material for battery of the present invention.
Fig. 7 is the schematic diagram for illustrating the measuring method of the sealing intensity of embodiment.
Fig. 8 is the schematic diagram for illustrating the measuring method of the sealing intensity of embodiment.
Fig. 9 is the schematic diagram for illustrating the measuring method of the sealing intensity of embodiment.
Figure 10 is the schematic diagram for illustrating the measuring method of the sealing intensity of embodiment.
Figure 11 is that " shape and function of 1. elements collection of macromolecule that macromolecule micrograph collection is seen with eyes " (is compiled
Person: civic organization's polymer science meeting, publisher: Yamamoto lattice issue unit: Co., Ltd. trains wind shop, 30, Showa 61 on Mays the
An edition distribution) page 29 in be designated as the transmission electron microscope photo that " C " show (scale bar is 5 μm).
Specific embodiment
Metal terminal of the invention is present in the metal terminal being electrically connected with the electrode of cell device and envelope with adhesion film
Between the packaging material of packed battery element, which is characterized in that metal terminal adhesion film by have at least 1 layer polypropylene layer and
The laminated body of at least 1 layer sour modified polypropene layer is constituted, and above-mentioned acid modified polypropene layer constitutes above-mentioned metal terminal cementability
The surface layer of at least one surface side of film observes that island is tied when observing the section of above-mentioned polypropylene layer using electron micrograph
Structure, with the aggregate thickness of sour modified polypropene layer be 1 when, the aggregate thickness of polypropylene layer is in 0.7 or more 3.5 range below
It is interior.Hereinafter, for metal terminal of the invention adhesion film and its battery of the invention has been used to be described in detail.
It should be noted that in the present specification, be with the meaning of numberical range shown in "~" " more than ", " following ".
For example, the such meaning stated of 2~15mm is 2mm or more 15mm or less.
1. metal terminal adhesion film
Metal terminal of the invention is present in the metal terminal being electrically connected with the electrode of cell device and envelope with adhesion film
Between the packaging material of packed battery element.Specifically, for example as shown in Figures 1 to 3, metal terminal adhesion film of the invention
1 is present between the metal terminal 2 being electrically connected with the electrode of cell device 4 and the packaging material 3 for encapsulating cell device 4.In addition,
Metal terminal 2 is prominent in the outside of packaging material 3, in the edge part 3a for the packaging material 3 being heat-sealed, uses across metal terminal
Adhesion film 1 is packaged the clamping of material 3.It should be noted that in the present invention, heat when as heat sealing packaging material, usually
For 160~220 DEG C or so of range, as pressure, the usually range of 0.5~2.0MPa or so.
Metal terminal adhesion film 1 of the invention sets to improve the adaptation of metal terminal 2 and packaging material 3
It sets.By improving the adaptation of metal terminal 2 and packaging material 3, the leakproofness of cell device 4 is improved.As it was noted above, heat-sealing
When cell device 4, in such a way that the metal terminal 2 being electrically connected with the electrode of cell device 4 is prominent in the outside of packaging material 3,
Encapsulate cell device.At this point, the heat fusion resin of the metal terminal 2 and the innermost layer positioned at packaging material 3 that are formed by metal
Layer 34 (layer formed by the heat fusion property resin such as polyolefin) is formed by different kinds material, therefore without using adhesion film
In the case of, at the interface of metal terminal 2 and heat fusion property resin layer 34, the leakproofness of cell device is easy to be lower.In addition, even if
Adhesion film is used, if the electrolyte resistance of adhesion film is low, the leakproofness of cell device is easy to be lower.
Such as shown in Figure 4,5, metal terminal adhesion film 1 of the invention is by having 11 He of at least 1 layer polypropylene layer
The laminated body of at least 1 layer sour modified polypropene layer 12 is constituted, and sour modified polypropene layer 12 constitutes metal terminal adhesion film 1
Island structure is observed when using the section of electron micrograph observation polypropylene layer 11 in the surface layer of at least one surface side,
In addition, the aggregate thickness of polypropylene layer 11 is set in 0.7~3.5 model when being 1 with the aggregate thickness of sour modified polypropene layer 12
In enclosing.The adaptation of metal terminal of the invention adhesion film 1 and packaging material and metal terminal is high as a result, and resistance to electricity
It is also excellent to solve fluidity, therefore the leakproofness of cell device can be effectively improved.
From the adaptation further increased with packaging material and metal terminal and the sight for further increasing electrolyte resistance
Point sets out, can be preferred as the aggregate thickness of the polypropylene layer 11 when being set to 1 with the aggregate thickness of sour modified polypropene layer 12
It enumerates in the range of 0.75~3.2 or so, more preferably in the range of 0.8~2.0 or so.
In metal terminal of the invention in adhesion film 1, sour modified polypropene layer 12 constitutes metal terminal cementability
The surface layer of at least one surface side of film.The sour modified polypropene layer 12 being made of sour modified polypropene gathers with what is be made of polypropylene
Propylene layer 11 is compared, for the excellent adhesion of metal material.Therefore, so that sour modified polypropene layer 12 is located at metal terminal 2
The mode of side configures metal terminal of the invention adhesion film 1 between metal terminal 2 and packaging material 3, can be effective
The leakproofness of ground raising cell device.
Metal terminal adhesion film 1 of the invention respectively at least has polypropylene layer 11 and sour modified polypropene layer 12
1 layer.As the preferred laminated construction of metal terminal of the invention adhesion film 1, can enumerate for example, as shown in figure 4
Lamination polypropylene layer 11 and each 1 layer of structure of sour modified polypropene layer 12, for example as shown in Figure 5 in two faces of polypropylene layer 11
The structure etc. of 1 layer of each lamination sour modified polypropene layer 12.Wherein, as be described hereinafter, can in 1 layer polypropylene layer 11 continuous lamination it is more
A layer being made of identical or different polypropylene, multiple layer of 1 layer polypropylene layer 11 of composition.It is also possible to modified in 1 layer of acid
The continuous multiple layers being made of identical or different sour modified polypropene of lamination in polypropylene layer 12,1 layer of acid of multiple layer of composition
Modified polypropene layer 12.
The concrete example of preferred laminated construction as metal terminal of the invention adhesion film 1, can enumerate: acid is modified
2 layers of structure of 12/ polypropylene layer 11 of polypropylene layer；Successively 12/ polypropylene layer of lamination acid modified polypropene layer, 11/ acid modified poly- third
The 3-tier architecture of alkene layer 12；Successively sour 12/ polypropylene layer of modified polypropene layer of 12/ polypropylene layer of lamination acid modified polypropene layer 11/
5 layers of structure etc. of 11/ sour modified polypropene layer 12, in these, the 2 of more preferably sour 12/ polypropylene layer 11 of modified polypropene layer
The 3-tier architecture of the sour modified polypropene layer 12 of layer structure, successively 12/ polypropylene layer of lamination acid modified polypropene layer 11/.
Metal terminal of the invention is constituted with the preferred whole layers of adhesion film 1 by polyolefin.More specifically, of the invention
Metal terminal adhesion film 1 is it is also preferred that the mode being only made of sour modified polypropene layer 12 and polypropylene layer 11, it is also preferred that also
The mode for having other polyolefin layers being made of polyolefin.As the concrete example for the polyolefin for constituting polyolefin layer, Ke Yilie
Lift polyethylene, sour modified poly ethylene etc..In sour modified poly ethylene, it is not particularly limited as by the modified ingredient of hexenoic acid,
Such as the unsaturated carboxylic acid or its acid anhydrides modified for acid etc. illustrated in aftermentioned sour modified polypropene layer 12 can be enumerated.
It as the metal terminal of the invention thickness of adhesion film 1, is not particularly limited, from further increasing and pack
The adaptation of material and metal terminal and from the perspective of further increasing electrolyte resistance, preferably 40~200 μm or so, more
It is preferred that 55~150 μm or so, further preferred 60~110 μm or so.
In addition, from the adaptation further increased with packaging material and metal terminal and further increasing electrolyte resistance
From the perspective of, when measuring metal terminal adhesion film 1 of the invention using differential scanning calorimetry (DSC), preferably 150~165
DEG C range observe melting peak.
In addition, from the same viewpoint, metal terminal of the invention is measured with adhesion film 1 by following measuring method
The thickness residual rate of metal terminal adhesion film be preferably from about 50% or more, preferably from about 55% or more, preferably from about
60% or more.For the upper limit of the thickness residual rate, preferably from about 90% hereinafter, preferably from about 85% hereinafter, be preferably from about
80% or less.As the range of the thickness residual rate, it can be preferably listed 55~90% or so, 55~85% or so, 55~
80% or so, 60~90% or so, 60~85% or so, 60~80% or so.It is 50% or more by using the residual rate
Metal terminal adhesion film 1 can effectively inhibit the short circuit of barrier layer contained by packaging material and metal terminal, and energy
Enough further increase the adaptation of packaging material and metal terminal adhesion film.In addition, being 90% by using the residual rate
Metal terminal below adhesion film 1 can follow the shape of the step of metal terminal well, in addition, also can be fine
The end of ground covering metal terminal.
(measurement of the thickness residual rate of metal terminal adhesion film)
Prepare to use with a thickness of 100 μm of aluminium sheet (fine aluminium system, JIS H4160-1994A1N30H-O) and metal terminal viscous
Connecing property film.Utilize the thickness A (μm) of micrometer measurement metal terminal adhesion film.So that aluminium sheet and metal terminal cementability
The consistent mode of length direction and width direction of film stacks metal terminal adhesion film in the central part of aluminium sheet.At this point,
The sour modified polypropene layer for being configured to metal terminal adhesion film is in contact with aluminium sheet.Prepare the length that 2 are longer than aluminium sheet and
Width is the metal plate of 7mm, in a manner of covering the entire surface of metal terminal adhesion film, is used from aluminium sheet and metal terminal viscous
The two sides up and down of connecing property film are heated and pressurizeed with 190 DEG C of temperature, face pressure 1.27MPa, the condition that the time is 3 seconds, are obtained
The laminated body of aluminium sheet and metal terminal adhesion film.The part of the laminated body being heated and pressed is measured using micrometer
Thickness B (μm).Using following formula, the thickness residual rate of above-mentioned metal terminal adhesion film is calculated.
Thickness residual rate (%)=(thickness B-100)/thickness A × 100 of metal terminal adhesion film
Wherein, length direction refers to that the longitudinal direction of the long side of the overlook view corresponding to object, width direction refer to
The short side direction of the short side of overlook view corresponding to object.In the situation in the same size of length direction and width direction
Under (square), length direction, width direction can be arbitrarily decided.
Wherein, when measuring the residual rate, according to the area of metal terminal adhesion film, can also be become with face pressure
The mode of 1.27MPa applies compressive load to be measured.Specifically, can be by [utilizing the compressive load of metal plate
(N)]/[area (mm of pressurized metal terminal adhesion film2)] formula as=face pressure (MPa) converts.Wherein, sharp
It can be adjusted according to the diameter of the cylinder of adjustment metal plate pressure, air pressure with the compressive load (N) of metal plate.
In the measurement of the thickness residual rate of above-mentioned metal terminal adhesion film, if with 190 DEG C of temperature, face pressure
1.27MPa, the condition that the time is 3 seconds are measured, then the length and width of metal terminal adhesion film and aluminium sheet does not have
It limits, such as can measure in the metal terminal adhesion film using length 70mm, width 5mm (can be using hands such as cuttings
Method) in the case where, it, can be fine using the metal terminal adhesion film of the size and the aluminium sheet of length 60mm, width 25mm
The thickness residual rate of ground measurement metal terminal adhesion film.It should be noted that [the face of pressurized metal terminal adhesion film
Product (mm2)] be the aluminium sheet part Chong Die with metal terminal adhesion film area, such as the metal terminal using above-mentioned size
In the case where adhesion film and aluminium sheet, which is 60mm × 5mm.In addition, being bonded by obtaining aluminium sheet and metal terminal
The being heated and pressurizeed when laminated body of property film, the thickness of above-mentioned aluminium sheet does not change substantially.Even if as measure object
Metal terminal adhesion film it is of different sizes, as long as being able to carry out said determination, the size of aluminium sheet can not also be changed.
It is not limited especially as metal terminal of the invention with the whole melt mass flow rate (MFR) of adhesion film 1
System, from the adaptation further increased with packaging material and metal terminal and the viewpoint that further increases electrolyte resistance goes out
Hair, preferably 1~15 or so, more preferably 2~12 or so, further preferably 3~10 or so.Metal terminal adhesion film
1 whole melt mass flow rate (MFR) is to apply according to the method for JIS K7210:2014 defined at 230 DEG C of measuring temperature
The load-carrying for adding 2.16kg, the value measured using melt index apparatus.
In addition, the percent thermal shrinkage (%) of the flow direction (MD) as metal terminal of the invention adhesion film 1, lower limit
It can be preferably listed about 70% or more, more preferably from about 75% or more, further preferably about 80% or more, the upper limit can be preferably listed
About 95% hereinafter, more preferably from about 92% hereinafter, further preferably about 90% or less.In addition, the model as the percent thermal shrinkage (%)
It encloses, 70~95% or so, 70~92% or so, 70~90% or so, 75~95% or so, 75~92% left sides can be preferably listed
The right side, 75~90% or so, 80~95% or so, 80~92% or so, 80~90% or so.The measurement side of the percent thermal shrinkage (%)
Method is as follows.(measuring method of percent thermal shrinkage (%))
Adhesion film is used to be cut into length 50mm (MD) × width 4mm (TD) size as test film metal terminal.It connects
Get off, uses the length M (mm) of metal scale measurement test film.Next, the end of the length direction of test film is utilized adhesive tape
It is fixed on metal mesh, test film is made to become hanging in the state of metal mesh.In this state, in the furnace for being heated to 190 DEG C
After placing 120 seconds, test film is taken out together with metal mesh, the natural cooling under room temperature (25 DEG C) environment.Next, using gold
Belong to the length N (mm) of the test film of ruler measurement cooled to room temperature.By following formula, the heat of metal terminal adhesion film is calculated
Shrinking percentage.
Percent thermal shrinkage (%)=(length N/ length M) × 100
It should be noted that being clamped in metal terminal with adhesion film with metal terminal in the encapsulation of cell device
In the case that state between packaging material is sealed, due to the pressure from metal plate for heat-sealing, there are metals
Terminal adhesion film do not occur change in size part and because far from metal plate without by pressure due to the portion that shrinks
Point.At this point, do not apply stressed part also can moderately be heat-shrinked to the part for being applied with pressure, thereby, it is possible to effective
Ground inhibits the thickness for applying stressed part to become too thin.On the other hand, when the thermal contraction of metal terminal adhesion film is excessive,
It is arranged in warm-up phase before metal terminal is sealed with adhesion film 1 etc. on metal terminal, metal terminal cementability
Film is moved because of thermal contraction, the worry for having the positional relationship between metal terminal and metal terminal adhesion film to deviate.
Therefore, metal terminal of the invention preferably has the percent thermal shrinkage of appropriateness with adhesion film 1.Wherein, as metal end of the present invention
The percent thermal shrinkage of the appropriateness of son adhesion film 1, such as the lower limit value of percent thermal shrinkage (%) of above-mentioned flow direction (MD) can be with
Enumerate 70% or more.(polypropylene layer 11)
In the present invention, polypropylene layer 11 is the layer being made of polypropylene.In addition, being observed using electron micrograph poly-
When the section of propylene layer 11, island structure can be observed.Island structure can be observed in the section of so-called polypropylene layer 11, refers to
Such as electron micrograph shown in Figure 11 is such, and extra large part and island portion point can be observed.Figure 11 is in " the microcosmic photograph of macromolecule
The shape and function for 1. elements collection of macromolecule that piece collection is seen with eyes " (editor: civic organization's polymer science meeting, publisher:
Yamamoto lattice, issue unit: Co., Ltd. trains wind shop, the distribution of 61 first edition on May 30, of Showa) page 29 in be designated as " C " and show
Transmission electron microscope photo out (scale bar is 5 μm).As shown in figure 11, in the section of polypropylene layer 11, island structure
It can be by the way that the section of polypropylene layer be utilized osmium tetroxide (OsO4) observed using electron micrograph to confirm after dyeing.
It should be noted that, although sea part is clearly more demarcated than island portion bright in Figure 11, but according to measuring method, condition, also there is extra large part to compare island
Part seems dim situation.Anyway, as long as extra large part and island portion point can be distinguished, it will be able to measure in island structure
Island portion point area ratio.
In the island structure of polypropylene layer 11, the area ratio as island portion point is not particularly limited, from further increasing
With the adaptation of packaging material and metal terminal and from the perspective of further increasing electrolyte resistance, 10 can be preferably listed
~50% or so, more preferable 20~40% or so.The measurement side of the area ratio of island portion point in the island structure of polypropylene layer 11
Method is as described below.It should be noted that can be evaluated as substantially in the case where the area ratio that island portion is divided is 2% situation below
Without island structure.
(measuring method of the area ratio of the island portion point in island structure)
Metal terminal adhesion film is embedded in thermosetting epoxy resin and makes its solidification.Use the rotary of commercially available product
Ultramicrotome (LEICA UC6) and diamond tool make the section (along the section of TD) in purpose direction, at this point, using making
With the cryoultramicrotome of liquid nitrogen in -70 DEG C of production sections.Ruthenium tetroxide is utilized to dye one together with embeding resin
Dinner.Since polypropylene can expand after dyeing, dilation is trimmed using ultramicrotome, for the thickness of 100nm or so
Degree further cuts 1 to 2 μm or so of part, is observed as follows.The section of dyeing is aobvious using Flied emission shape scanning electron
Micro mirror (for example, Hitachi High-Technologies Corporation S-4800TYPE1, determination condition:
3kV20mA High WD6mm detector (Upper)) it observes and obtains image (multiplying power is 10000 times).Next, using can
The image processing software of binaryzation is carried out (for example, the imaged analysis software WinROOF (Ver7.4) of three paddy business, right to image
The island portion of island structure point and sea part are subjected to binaryzation in the image, acquire the ratio (island portion point of island portion point occupied area
Total area/image measurement range area).About specific image capture conditions, using being recorded in such as embodiment
Condition.
By using electron micrograph observe polypropylene layer 11 section when observe island structure, be able to maintain gold
Belong to the excellent heat resistance of terminal adhesion film and improves resistance to cold.In addition, improving and packaging material and metal terminal
Adaptation, and then also improve electrolyte resistance.
In addition, in the present invention, polypropylene layer 11 is preferably made of un-stretched polypropylene.Polypropylene layer 11 is by non-stretched poly-
Propylene is constituted, and without being made of oriented polypropylene, this point can be by dividing polypropylene layer 11 using X-ray diffraction method
Analysis is to confirm.Specifically, when the Wide angle X-ray diffraction for the polypropylene layer 11 that measurement is made of un-stretched polypropylene, from poly- third
The peak intensity in 110 faces for being equivalent to crystalling propylene that the diffraction pattern of alkene crystallization calculates is relative to the peak intensity for being equivalent to 040 face
Degree the ratio between (peak intensity in 040 face/110 faces peak intensity) in the range of 0.5~1.5, what is be made of oriented polypropylene is poly-
Propylene layer is outside the range.That is, in the present invention, polypropylene layer 11 by when measurement Wide angle X-ray diffraction from crystalling propylene
Diffraction pattern calculate 110 faces for being equivalent to crystalling propylene peak intensity relative to the peak intensity for being equivalent to 040 face the ratio between
The polypropylene of (peak intensity in 040 face/110 faces peak intensity) in the range of 0.5~1.5 is constituted.
Wherein, the peak for being equivalent to 110 faces appears near 2 θ=14 °, and being equivalent to the peak in 040 face, to appear in 2 θ=17 ° attached
Closely.Utilize the determination condition of Wide angle X-ray diffraction are as follows: Soller/PCS (angular aperture of incident parallel slit): 5.0deg, IS long
Side (length of long side limitation slit): 10.0mm, PSA open (angular aperture of light PSA is open), (light is parallel by Soller
The angular aperture of slit): 5.0deg, 2 θ/θ: 2~40deg, stepping 0.04deg.
In addition, polypropylene layer 11 is made of un-stretched polypropylene can pass through benefit without being made of this point oriented polypropylene
Polypropylene layer 11 is analyzed with Raman spectroscopy to confirm.Specifically, being carried out using Raman spectroscopy to polypropylene layer
When analysis, about 809cm is being come across- 1Crystalline peak intensity height " A " and come across about 842cm- 1Non-crystalline peak
The ratio between the height " B " of intensity (A/B) is to be able to confirm that polypropylene layer 11 is by un-stretched polypropylene structure in 1.6 situations below
At.Determination condition is set as optical maser wavelength 633nm, grating 600gr/mm, and 100 μm of confocal pinhole, 10 times of microscope lens, when exposure
Between 15sec, cumulative number 1 time, parallel for the MD (machine direction, Machine Direction) with polypropylene layer 11 cuts open
Face measures Raman spectrum to make MD become parallel mode with incident laser plane of polarisation.In addition, 710cm will be linked- 1With
925cm- 1Straight line as baseline.About analysis condition, by the 809cm after progress baseline correction- 1And 842cm- 1The peak height at place
Degree is calculated as peak intensity.It should be noted that appearing in above-mentioned about 809cm- 1The height " A " of crystalline peak intensity be
It is attributed to the flexible peak with the integrated mode of CH3 angle vibration main chain CC.In addition, coming across about 842cm- 1Amorphism peak intensity
The height " B " of degree is the peak for being attributed to CH3 angle vibration mode.
In the present invention, the confirmation method of the MD of polypropylene layer 11 is as described below.For the length direction of polypropylene layer 11
Section and from the section of the length direction at parallel direction, angle is changed to 10 degree every time, until reach with it is long
Each section (adding up to 10 sections) in the vertical direction of the section in degree direction, is observed by electron micrograph respectively,
Confirm island structure.Next, observing the shape on each island respectively for each section.About the shape on each island, will connection with
The linear distance of the right end of the left end and vertical direction of the thickness direction vertical direction of polypropylene layer 11 is set as diameter y.It is right
In each section, when the diameter y of the shape on island is sorted from large to small, being averaged for maximum 20 diameter y is calculated.By the shape with island
The parallel walking direction of average maximum section of diameter y be MD.
As polypropylene contained by polypropylene layer 11, homo-polypropylene, polyacrylic block copolymer (example can be preferably listed
Such as, the block copolymer of propylene and ethylene), polyacrylic random copolymer (for example, random copolymer of propylene and ethylene) etc.
Crystallinity or non-crystalline polypropylene.Become the composition of above-mentioned island structure as polypropylene layer 11, such as can enumerate: poly- third
Alkene layer 11 contains the composition of polyacrylic block copolymer；Contain polyacrylic block copolymer and polyacrylic random copolymer
Composition；Composition etc. containing homo-polypropylene, random polypropylene and polyethylene.In these, polypropylene layer 11 more preferably contains
There is block polypropylene, is further preferably made of block polypropylene.Wherein, the ratio as propylene contained by block polypropylene,
10~90 mass % or so, more preferable 30~80 mass % or so can be preferably listed.
In metal terminal of the invention in adhesion film 1, polypropylene layer 11 can be only 1 layer, or 2 layers with
On.Furthermore it is possible to which continuous lamination has multiple layers being made of identical or different polypropylene, this is more in 1 layer polypropylene layer 11
A layer of 1 layer polypropylene layer 11 of composition.Polypropylene layer 11 preferably comprises the layer being made of block polypropylene.
As the preferred embodiment of 1 layer polypropylene layer 11, the layer being preferably made of random polypropylene and by block polypropylene
The laminated body of the layer of composition, particularly preferably having successively lamination has the layer being made of random polypropylene, is made of block polypropylene
Layer and the layer being made of random polypropylene laminated construction (3-tier architecture).
It should be noted that in the present invention, in the case where continuous lamination has multiple layers being made of polypropylene, by these
It is laminated together referred to as 1 layer polypropylene layer 11.Equally, there is the case where multiple layers being made of sour modified polypropene in continuous lamination
Under, these are laminated together referred to as 1 layer sour modified polypropene layer 12.
About the thickness of 1 layer polypropylene layer 11, as long as be 1 with the aggregate thickness of sour modified polypropene layer 12, polypropylene
The aggregate thickness of layer 11 is just not particularly limited in the range of 0.7~3.5, from further increasing and packaging material and metal
The adaptation of terminal and from the perspective of further increasing electrolyte resistance, can be preferably listed 15~80 μm or so, more excellent
Select 20~70 μm or so.In addition, although detailed mechanism and indefinite is easy when the thickness of sour modified polypropene layer is excessive
The cohesion that sour modified polypropene layer occurs destroys, and has the tendency that being easily reduced with the adaptation of metal terminal adhesion film.
From the adaptation further increased with packaging material and metal terminal and the sight for further increasing electrolyte resistance
Point sets out, and in metal terminal in adhesion film 1, polypropylene layer 11 is preferably accounted in metal terminal in the thickness of adhesion film 1
Have about 40% or more, more preferably occupy about 45% or more, as the upper limit, polypropylene layer 11 is in metal terminal adhesion film 1
Preferably occupy about 85% in thickness hereinafter, more preferably occupying about 80% or less.Thickness as polypropylene layer 11 is according to metal end
The preferred scope occupied in the thickness of son adhesion film 1 can enumerate 40~85% or so, 45~80% or so.
Melting peak temperature as polypropylene layer 11 is not particularly limited, from further increasing and packaging material and metal end
The adaptation of son and from the perspective of further increasing electrolyte resistance, can be preferably listed 140~165 DEG C or so, into one
Preferably 150~160 DEG C or so of step.It should be noted that in the present invention, the melting peak temperature of polypropylene layer 11 is using differential
The value that scanning calorimeter (DSC) measures, will heat up speed be set as 10 DEG C/min, temperature measuring range be set as to -50~200 DEG C,
Aluminium dish is used to be measured as sample disc.
(sour modified polypropene layer 12)
In the present invention, sour modified polypropene layer 12 is the layer being made of sour modified polypropene.To sour modified polypropene layer
12, island structure can be observed when it is also preferred that observing section using electron micrograph.It should be noted that acid modified poly- third
The confirmation method of island structure in alkene layer 12 is identical as the confirmation method in above-mentioned polypropylene layer 11.
In the island structure of sour modified polypropene layer 12, the area ratio as island portion point is not particularly limited, from into
From the perspective of one step improves the adaptation with packaging material and metal terminal and further increases electrolyte resistance, Ke Yiyou
Choosing enumerates 10~50% or so, more preferable 20~40% or so.What the island portion in the island structure of sour modified polypropene layer 12 was divided
The measuring method of area ratio, other than measure object is sour modified polypropene layer 12, in above-mentioned polypropylene layer 11
Measuring method is identical.It should be noted that being evaluated as substantially not in the case where the area ratio that island portion is divided is 2% situation below
With island structure.
As sour modified polypropene, it is not particularly limited as long as the modified polypropylene of acid, is preferably listed and uses insatiable hunger
With carboxylic acid or its anhydride grafting modified polypropylene.As the unsaturated carboxylic acid or its acid anhydrides modified for acid, such as can arrange
Lift maleic acid, acrylic acid, itaconic acid, crotonic acid, maleic anhydride, itaconic anhydride etc..
As the polypropylene modified by acid, homo-polypropylene, polyacrylic block copolymer can be preferably listed (for example, third
The block copolymer of alkene and ethylene), the crystallization of polyacrylic random copolymer (for example, random copolymer of propylene and ethylene) etc.
Property or non-crystalline polypropylene.In these, polyacrylic block copolymer (block polypropylene) or polyacrylic nothing are preferably comprised
It advises copolymer (random polypropylene).It should be noted that sour modified polypropene layer 12 be the layer that is made of sour modified polypropene this
It can a little be analyzed by infrared measure, gas-chromatography-mass analysis etc., be not particularly limited analysis method.Example
Such as, when using infrared measure measurement maleic anhydride modified polypropylene, in wave number 1760cm- 1Neighbouring and wave number 1780cm- 1It is attached
It closely detected the peak from maleic anhydride.But sour modification degree it is low when, peak becomes smaller, to can't detect sometimes.At this time can
It is analyzed using nuclear magnetic resonance optical spectroscopy.
In metal terminal of the invention in adhesion film 1, sour modified polypropene layer 12 can be only 1 layer, be also possible to 2
Layer or more.Furthermore it is possible to which continuous lamination has multiple modified poly- by identical or different acid in 1 layer of sour modified polypropene layer 12
The layer that propylene is constituted, multiple layer constitutes 1 layer of sour modified polypropene layer 12.
As the preferred embodiment of 1 layer of sour modified polypropene layer 12, it can enumerate being made of maleic anhydride modified polypropylene
Layer.
About the thickness of 1 layer of sour modified polypropene layer 12, as long as poly- when being 1 with the aggregate thickness of sour modified polypropene layer 12
The aggregate thickness of propylene layer 11 is just not particularly limited in the range of 0.7~3.5, from further increasing and packaging material and gold
From the perspective of belonging to the adaptation of terminal and further increasing electrolyte resistance, about 10 μm or more can be preferably listed, into one
Step preferably from about 15 μm or more, the upper limit can be preferably listed about 40 μm hereinafter, more preferably from about 35 μm hereinafter, further preferably about 30 μm
Below.
It as the melting peak temperature of sour modified polypropene layer 12, is not particularly limited, from further increasing and packaging material
With the adaptation of metal terminal and from the perspective of further increasing electrolyte resistance, 130~165 DEG C of left sides can be preferably listed
The right side, more preferable 140~160 DEG C or so.It should be noted that in the present invention, the melting peak temperature of sour modified polypropene layer 12
It is carry out same as the measuring method of the melting peak temperature of polypropylene layer 11 and the value measured.
Pressed when sealing from the viewpoint of inhibition metal terminal adhesion film and suppress and improve sealing intensity, In
Metal terminal of the invention is in adhesion film 1, the softening of softening point and sour modified polypropene layer 12 as polypropylene layer 11
The absolute value of the difference of point, the upper limit be preferably listed about 40 DEG C hereinafter, more preferably from about 30 DEG C hereinafter, further preferably about 20 DEG C hereinafter,
About 0 DEG C or more, more preferably from about 5 DEG C or more, further preferably about 10 DEG C or more is preferably listed in lower limit.Polypropylene layer 11 and acid are modified
The softening point of polypropylene layer 12 is the value measured and carrying out as follows.
(measuring method of softening point)
Use sweep type heatable stage microscope (NanoTA of Anasys corporation), the model EX- of the cantilever of thermal probe
AN2-200, the value measured with the condition of 5 DEG C/s of heating rate.In addition, softening point is summit temperature.
Metal terminal of the invention in adhesion film 1, can according to need containing lubrication prescription, antioxidant, ultraviolet light inhale
Receive the various additives such as agent, light stabilizer.It should be noted that also having metal terminal use according to the type of additive, content etc.
The case where adhesion film 1 changes colour.
As the metal terminal content of contained lubrication prescription in 1 entirety of adhesion film, the left side 0~2000ppm can be preferably listed
It is right.
(measurement of lubrication prescription amount)
Metal terminal is using gas chromatography mass-synchrometer (GC- with the content of contained lubrication prescription in 1 entirety of adhesion film
MS the value) measured.Specifically, metal terminal is extracted to the additive in adhesion film in the methanol of boiling circulation
In methanol, obtained methanol extraction liquid is analyzed using GC-MS, measures metal terminal adhesion film entirety institute
The lubrication prescription amount contained.
It as lubrication prescription, is not particularly limited, amide system lubrication prescription is preferably listed.As the concrete example of amide system lubrication prescription, such as
Can enumerate unsaturated fatty acid amide, unsaturated fatty acid amide, substituted amide, methylol amide, saturated fatty acid bisamide,
Unsaturated fatty acid bisamide etc..As the concrete example of unsaturated fatty acid amide, lauramide, palmitamide, hard can be enumerated
Acyl amine, Shan Yu amide, hydroxystearic etc..As the concrete example of unsaturated fatty acid amide, oleamide, mustard can be enumerated
Amide etc..As the concrete example of substituted amide, it is stearic that N- oleyl palimitamide, N- stearyl stearamide, N- can be enumerated
Oleamide, N- oil base stearmide, N- stearyl erucic amide etc..In addition, the concrete example as methylol amide, Ke Yilie
Lift hydroxymethylstear amide etc..As the concrete example of saturated fatty acid bisamide, methylene bis stearamide, sub- second can be enumerated
Base double decyl amide, ethylenebis lauramide, ethylenebisstearamide, ethylenebis hydroxystearic, ethylenebis mountains
Yu amide, hexa-methylene bis-stearamides, hexamethylene bis mountain Yu amide, hexa-methylene hydroxystearic, N, N '-two are hard
Aliphatic radical adipamide, N, N '-distearyl decanediamide etc..As the concrete example of unsaturated fatty acid bisamide, can enumerate
Ethylenebisoleoamide, ethylenebis erucic amide, hexamethylene bis oleamide, N ,-two oil base adipamide of N ', N, N '-two
Oil base decanediamide etc..As the concrete example of aliphatic ester amide, stearmide ethyl stearate etc. can be enumerated.In addition,
As the concrete example of aromatic system bisamide, can enumerate xyxylene bis-stearamides between Asia, it is sub- between the double hydroxyls of xyxylene
Stearmide, N, N '-distearyl isophtalamide etc..Lubrication prescription can be used alone, and can also combine two or more
It uses.
In addition, metal terminal of the invention can according to need in adhesion film 1 containing filler.By making metal
Contain filler in terminal adhesion film 1, since filler is functioned as spacer (Spacer), so can be into one
Step effectively inhibits the short circuit between metal terminal 2 and the barrier layer 33 of packaging material 3.As the partial size of filler, Ke Yilie
0.1~35 μm or so of act, preferably 5.0~30 μm or so, further preferred 10~25 μm or so of range.In addition, in metal end
In the case where adding filler in son adhesion film 1, it preferably is contained in polypropylene layer 11 and/or sour modified polypropene layer 12
In, as the content of filler, relative to 100 mass of resin component for forming polypropylene layer 11 and sour modified polypropene layer 12
Part, respectively 5~30 mass parts or so, more preferable 10~20 mass parts or so can be enumerated.
As filler, be able to use inorganic system, organic system it is any number of.As inorganic system's filler, such as can arrange
It lifts: carbon (charcoal, graphite), silica, aluminium oxide, barium titanate, iron oxide, silicon carbide, zirconium oxide, zirconium silicate, magnesia, oxidation
Titanium, calcium aluminate, calcium hydroxide, aluminium hydroxide, magnesium hydroxide, calcium carbonate etc..In addition, as organic system filler, such as can be with
It enumerates: fluororesin, phenolic resin, urea resin, epoxy resin, acrylic resin, benzoguanamine formaldehyde condensation products, melamine
Amine formaldehyde condensation product, polymethyl methacrylate cross-linking agent, polyethylene crosslinking substance etc..From the stability, rigidity, content of shape
From the perspective of object patience, preferably aluminium oxide, silica, fluororesin, acrylic resin, benzoguanamine formaldehyde condensation products,
Especially in these, more preferably spherical aluminium oxide, silica.As modified poly- to formation polypropylene layer 11 and/or acid
The mixed method of mixed filler in the resin component of propylene layer 12 can use banbury mixers etc. by the two using preparatory
Melt blending and make the substance of masterbatch reach as defined in mixing ratio method, the method directly mixed with resin component etc..
In addition, metal terminal is can according to need respectively in adhesion film 1 containing pigment.As pigment, it is able to use
The various pigment of inorganic system.As pigment concrete example, it can preferably be illustrated in the carbon (charcoal, graphite) illustrated in above-mentioned filler.
Carbon (charcoal, graphite) is typically used for the material of inside battery, can not dissolve out the worry into electrolyte.In addition, coloring effect
Greatly, can be by not hindering the additive amount of the degree of cementability to obtain sufficient coloring effect, and will not be melted because of heat, energy
Enough get higher the apparent melt viscosity for the resin for being added to it.It further, can be to preventing in heat bonding pressurization part (when sealing)
It is thinning, the reduction of sealing intensity can be prevented.
In the case where metal terminal is with pigment is added in adhesion film 1, it preferably is contained in polypropylene layer 11 and/or acid changes
In property polypropylene layer 12, as its additive amount, such as in the case where the carbon black for the use of partial size being about 0.03 μm, relative to formation
100 mass parts of resin component of polypropylene layer 11 and sour modified polypropene layer 12, can enumerate 0.05~0.3 mass parts left side respectively
The right side, preferably 0.1~0.2 mass parts or so.By adding pigment in adhesion film 1 in metal terminal, enabling to can be with
It detects or can use using sensor and visually inspect the presence or absence of metal terminal adhesion film 1.It should be noted that poly- third
It, can be in identical polypropylene layer 11 in the case where adding filler and pigment in alkene layer 11 and/or sour modified polypropene layer 12
And/or filler and pigment are added in sour modified polypropene layer 12, but never hinder the heat fusion of metal terminal adhesion film 1
Property from the perspective of, filler and pigment, which preferably divide in polypropylene layer 11 and sour modified polypropene layer 12, to be added.
Metal terminal of the invention adhesion film 1, can be by lamination at least 1 layer polypropylene layer and at least 1 layer of acid changes
Property polypropylene layer manufactures.As the laminating method of at least 1 layer polypropylene layer and at least 1 layer sour modified polypropene layer, without spy
Do not limit, such as be able to use lamination methods, interlayer laminating method, squeeze out laminating method etc..
As making metal terminal adhesion film 1 be present in the method between metal terminal 2 and packaging material 3, without spy
It does not limit, such as shown in Fig. 1~3, in the part that metal terminal 2 is packaged the clamping of material 3, can be bonded with metal terminal
Property film 1 wind metal terminal 2.In addition, though illustration omitted can also in the part that metal terminal 2 is packaged the clamping of material 3
Configure metal terminal in two surface sides of metal terminal 2 in a manner of 1 transversal 2 metal terminal 2 of adhesion film.
[metal terminal 2]
Metal terminal adhesion film 1 of the invention is made in the mode being present between metal terminal 2 and packaging material 3
With.Metal terminal 2 (connecting pin) is the component being electrically connected with the electrode of cell device 4 (positive or negative pole), by metal material structure
At.Be not particularly limited as the metal material for constituting metal terminal 2, such as aluminium, nickel, copper can be enumerated etc..For example, and lithium from
The metal terminal 2 of the anode connection of sub- battery is usually made of aluminium etc..In addition, the metal end being connect with the cathode of lithium ion battery
Son is usually made of copper, nickel etc..
From the viewpoint of improving electrolyte resistance, the surface of metal terminal 2 is preferably embodied with chemical conversion processing.Example
Such as, in the case where metal terminal 2 is formed by aluminium, as chemical conversion processing concrete example, can enumerate to be formed phosphate,
The known method of the acid resistance envelope of chromate, fluoride, triazine thiol compound etc..In the method for forming acid resistance envelope
In, it is preferable to use be made of 3 ingredients of phenolic resin, charomic fluoride (III) compound, phosphoric acid phosphoric acid chromate processing.
The size of metal terminal 2 according to suitably set using the size etc. of battery.Thickness as metal terminal 2
Degree, can be preferably listed 50~1000 μm or so, more preferable 70~800 μm or so.In addition, the length as metal terminal 2, it can
1~200mm or so, more preferable 3~150mm or so is preferably listed.In addition, the width as metal terminal 2, can preferably arrange
Lift 1~200mm or so, more preferable 3~150mm or so.
[packaging material 3]
As packaging material 3, can enumerate has the laminated construction including following laminated body, which at least successively has
There are substrate layer 31, barrier layer 33 and heat fusion property resin layer 34.An example in Fig. 6 as 3 cross-section structure of packaging material, show according to
The mode of secondary lamination substrate layer 31, adhesive layer 32, barrier layer 33, adhesive layer 35 and heat fusion property resin layer 34.Bonding agent
Layer 32 is the layer that is set as needed for the purpose of improving adaptation of substrate layer 31 and barrier layer 33 etc..In addition, adhesive layer 35
It is the layer that is set as needed for the purpose of the adaptation etc. for improving barrier layer 33 and heat fusion property resin layer 34.
In packaging material 3, substrate layer 31 becomes outermost layer side, and heat fusion property resin layer 34 becomes innermost layer.It is assembling
When battery, sealed by making the heat fusion resin layer 34 positioned at 4 periphery of cell device contact with each other on surface and being hot-melted
Cell device 4, to encapsulate cell device 4.It should be noted that in figs. 1 to 3, illustrating using by embossing molding etc.
Battery 10 in the case where the packaging material 3 of molding pattern pressing type, but packaging material 3 is also possible to the pouch-type not being formed
(pouch type).It should be noted that there are tripartite's sealing, quad seals, pillow types etc. in pouch-type, any class can be
Type.
[substrate layer 31]
In packaging material 3, substrate layer 31 is the layer functioned as the substrate of packaging material, be to be formed it is outermost
Layer.
Raw material for forming substrate layer 31 are not particularly limited using being to have the substance of insulating properties as limit.As
The raw material of substrate layer 31 are formed, such as polyester, polyamide, polyolefin, epoxy resin, acrylic resin, fluorine tree can be enumerated
Rouge, polyurethane, silicone resin, phenolic resin, polyetherimide, polyimides and these mixture, copolymer etc..
About the thickness of substrate layer 31, such as 10~50 μm or so can be enumerated, preferably 15~30 μm or so.
[adhesive layer 32]
In packaging material 3, adhesive layer 32 is to assign substrate layer 31 adaptation, and configuration is in substrate layer as needed
Layer on 31.That is, adhesive layer 32 is set as needed between substrate layer 31 and barrier layer 33.
Adhesive layer 32 is by that can form the bonding agent that substrate layer 31 and barrier layer 33 are bonded.It is used to form adhesive layer
32 bonding agent can be 2 solution curing type bonding agents, or be also possible to 1 solution curing type bonding agent.In addition, about being used to form
The bonding agent of adhesive layer 32, it is not also specifically limited, can be chemical reaction type, solvent volatile-type, hot-melt type, hot pressing type
Deng it is any number of.
About the thickness of adhesive layer 32, such as 2~50 μm or so can be enumerated, preferably 3~25 μm or so.
[barrier layer 33]
In packaging material, barrier layer 33 not only improves the intensity of battery use packing material, or have prevent vapor,
Oxygen, light etc. invade the layer of the function of inside battery.As the metal for constituting barrier layer 33, aluminium, stainless steel, titanium can be specifically enumerated
Deng aluminium is preferably listed.Barrier layer 33 for example can be by metal foil or metal deposition film, inorganic oxide evaporation film, carbon containing inorganic
Oxide evaporation film, film provided with these evaporation films etc. are formed, and are preferably formed by metal foil, further preferably by alloy foil
It is formed.When manufacturing battery use packing material, from the viewpoint of preventing barrier layer 33 from generating fold, pinprick, barrier layer is more preferable
By aluminium (JIS H4160:1994A8021H-O, JIS H4160:1994A8079H-O, the JIS of for example annealed processing
H4000:2014A8021P-O, JIS H4000:2014A8079P-O) etc. soft alloy foil formed.
About the thickness of barrier layer 33, do not limited especially as long as it can play as the function of the barrier layer of vapor etc.
System, such as 10~50 μm or so can be set as, it is preferably set to 10~40 μm or so.
[adhesive layer 35]
In packaging material 3, adhesive layer 35 is in order to be bonded heat fusion property resin layer 34 securely, in barrier layer 33 and heat
The layer being set as needed between fusion character resin layer 34.
Adhesive layer 35 is by that can form the bonding agent that barrier layer 33 and heat fusion property resin layer 34 are bonded.About for shape
It is not particularly limited at the composition of the bonding agent of adhesive layer, such as the resin combination comprising acid modified polyolefin can be enumerated.
As acid modified polyolefin, such as it may be exemplified substance identical with the substance recorded in sour modified polypropene layer 12.In addition,
The polyethylene etc. of low density polyethylene (LDPE), medium density polyethylene, high density polyethylene (HDPE), linear low density polyethylene (LDPE) etc. can also be illustrated
Substance obtained from unsaturated carboxylic acid or modified its acid anhydrides (such as the substance illustrated in sour modified polypropene layer 12) acid.
About the thickness of adhesive layer 35, such as 1~40 μm or so can be enumerated, preferably 2~30 μm or so.
[heat fusion property resin layer 34]
Heat fusion property resin layer 34 is equivalent to innermost layer in packaging material 3, is in assembled battery by making to be hot-melted
Property resin layer is hot-melted and the layer of sealed cell element each other.
It is not particularly limited, example about the resin component for heat fusion property resin layer 34 with that can be hot-melted as limit
Polyolefin, acid modified polyolefin can such as be enumerated.
As said polyolefins, substance identical with the substance illustrated in polypropylene layer 11 and low close can be enumerated
Spend the polyethylene etc. of polyethylene, medium density polyethylene, high density polyethylene (HDPE), linear low density polyethylene (LDPE) etc..In addition, changing as acid
Property polyolefin, can enumerate substance identical with the substance recorded in adhesive layer 35.
In addition, the thickness as heat fusion property resin layer 34, is not particularly limited, 2~2000 μm of left sides can be preferably listed
The right side, more preferable 5~1000 μm or so, further preferred 10~500 μm or so.
2. battery 10
Battery 10 of the invention includes: the cell device 4 at least having anode, cathode and electrolyte；Encapsulate battery member
The packaging material 3 of part 4；It is electrically connected respectively with anode and cathode and protrudes the metal terminal 2 in the outside of packaging material 3.This hair
The feature of bright battery 10 is that metal terminal adhesion film 1 of the invention is present between metal terminal 2 and packaging material 3
It forms.
Specifically, using packaging material 3 by the cell device 4 at least having anode, cathode and electrolyte with anode
In the state of being protruded on the outside with the metal terminal 2 that cathode respectively connects, so that metal terminal adhesion film 1 of the invention is deposited
It is between metal terminal 2 and heat fusion property resin layer 34 and the method for packaging material can be formed on the periphery of cell device 4
The mode of blue portion's (for the heat fusion property region contacting one another of resin layer 34, the edge part 3a of packaging material) is coated, will
The heat fusion resin layer 34 of flange portion is heat-sealed with one another and is sealed, and provides the battery 10 for having used packaging material 3 as a result,.
It should be noted that in the case where storing cell device 4 using packaging material 3, so that the heat fusion resin of packaging material 3
The mode that layer 34 becomes inside (face being in contact with cell device 4) uses.
Battery of the invention can be any number of, the preferably secondary cell of one-shot battery, secondary cell.About secondary electricity
The type in pond is not particularly limited, such as can enumerate lithium ion battery, lithium ion polymer battery, lead storage battery, ni-mh and store
Battery, nickel-cadmium storage battery, Nife accumulator, nickel-zinc storage battery, oxidation silver-zinc storage battery, metal-air battery, multivalence sun from
Sub- battery, capacitor (condenser), capacitor (capacitor) etc..In these secondary cells, lithium-ion electric is preferably listed
Pond and lithium ion polymer battery.
It should be noted that measurement constitutes the packaging material, metal terminal and metal terminal adhesion film, packet of battery
The preferred thickness when thickness of the part of package material and metal terminal adhesion film and metal terminal lamination, as packaging material
10~65 μm or so can be enumerated, the thickness as metal terminal can enumerate 50~1000 μm or so, use as metal terminal
The preferred thickness of adhesion film can enumerate 30~80 μm or so, and the preferred thickness and metal terminal as packaging material are bonded
Property film preferred thickness it is total, 40~145 μm or so can be enumerated.
Embodiment
Embodiment and comparative example is illustrated below, and the present invention is described in detail.But the present invention is not limited by embodiment
It is fixed.
In embodiment and comparative example, the measurement of melting peak temperature, the measurement of percent thermal shrinkage, the measurement of sealing intensity, thickness
Spend the evaluation of the measurement of the area ratio of the island portion point in the measurement of residual rate, electrolyte resistance and island structure by as follows into
Row.Respective result is shown in table 1.(measurement of melting peak temperature)
Metal terminal adhesion film is measured using differential scanning calorimetry (DSC) (DSC).Shimadzu Seisakusho Ltd. is used as device
" DSC-60Plus ".In addition, about determination condition, heating rate is set as 10 DEG C/min, temperature measuring range is set as -50~
200 DEG C, aluminium dish has been used as sample disc.
(measurement of percent thermal shrinkage)
Metal terminal is cut into length 50mm (MD) × width 4mm (TD) size with adhesion film, as test film.
Next, using the length M (mm) of metal scale measurement test piece.Next, the end adhesive tape of test film length direction is consolidated
It is scheduled on metal mesh, test film is made to become hanging in the state of metal mesh.In this state, it is put in the furnace for being heated to 190 DEG C
It after setting 120 seconds, is taken out together with metal mesh, carries out natural cooling under room temperature (25 DEG C) environment.Next, using metal scale
The length N (mm) of the test film of cooled to room temperature is determined.It calculates metal terminal by following formula and uses and glue
The percent thermal shrinkage of connecing property film.
Percent thermal shrinkage (%)=(length N/ length M) × 100
(measurement of sealing intensity)
As in the schematic of figure 7, packaging material 3 is cut into length 150mm (MD) × width 60mm (TD) size.
In addition, metal terminal adhesion film 1 is cut into length 75mm (MD) × width 60mm (TD) size.In addition, Reserve Fund
Belong to terminal 2 (aluminium sheet, length 60mm, width 25mm, thickness 0.1mm).Next, as shown in the schematic diagram of Fig. 8, so that heat fusion
Property resin layer become inside mode, in the position of the center P of MD, by packaging material 3 in length direction doubling.Next, will
Metal terminal adhesion film 1 and metal terminal 2 (aluminium sheet, length 60mm, width 25mm, thickness 0.1mm) stack, such as Fig. 8
Shown in schematic diagram, it is inserted between the packaging material 3 of doubling.At this point, the sour modified polypropene layer of metal terminal adhesion film 1
It is configured to be in contact with metal terminal 2.Section from laterally is illustrated in Fig. 8 b.In this state, showing such as Fig. 9 a
Shown in intention, with sealed width 7.0mm, 190 DEG C of seal temperature, face pressure 1.0MPa, the condition that Sealing period is 3 seconds, from packaging
The two sides of material 3 are sealed, and laminated body is obtained.In the part S of Fig. 9 being heat-sealed, the direction of sealed width corresponds to packet
The MD of package material.Next, making the mode that the width (TD of packaging material) for the part S being heat-sealed is 15mm, in showing for Fig. 9 b
The position for two pecked lines being intended to, cuts out sample from laminated body.The packaging material 3 of obtained sample and metal terminal are used viscous
Connecing property film 1 on 180 ° of directions to separate until the position for the part S being heat-sealed.By the state from laterally
The section of sample is illustrated in Fig. 9 c.Next, using cupping machine (AG-Xplus of society, Shimadzu Seisakusho Ltd.), with speed
Distance 50mm, the condition that stripping means is T word stripping means, measure sealing intensity (N/15mm) between 300mm/min, fixture.This
When, as shown in Figure 10, there is 3/ metal terminal adhesion film of packaging material, 1/ metal terminal, 2/ packaging material 3 in successively lamination
In laminated body, the part of " metal terminal 1/ metal terminal of adhesion film, 2/ packaging material 3 " is clamped with following fixture,
Use packaging material 3 and metal terminal viscous
Connecing property film 1 is removed, and sealing intensity is measured.
(evaluation of electrolyte resistance)
Metal terminal is cut into 15mm (MD) × 100mm (TD) size, test piece with adhesion film.Next,
Test film is immersed in electrolyte (1M LiPF6Solution (Tan acid Asia Yi Zhi ﹕ Tan acid two Jia Zhi ﹕ diethyl carbonates=1 ﹕, 1 ﹕ 1,
Volume ratio) in, it is taken care of 24 hours in 85 DEG C of furnace.Next, taking out test film, after being washed with water, tried by visual observations
Test piece.The case where being evaluated as " A ", removing is had occurred in the interlayer of test film the interlayer of test film not peeling-off situation is commented
Valence is " C ".
(measurement of the thickness residual rate of metal terminal adhesion film)
Prepare length 60mm, width 25mm, 100 μm of thickness of aluminium sheet (fine aluminium system, JIS H4160-1994A1N30H-
) and the above-mentioned metal terminal adhesion film of length 70mm, width 5mm O.Next, being used using thickness gauge measurement metal terminal
The thickness A (μm) of adhesion film.Next, so that the length direction and width direction one of aluminium sheet and metal terminal adhesion film
The mode of cause stacks metal terminal adhesion film in the central part of aluminium sheet.Next, preparing 2 leaf length is longer than aluminium sheet
The metal plate that length and width are 7mm, next, in a manner of the entire surface for covering metal terminal adhesion film, from metal
The two sides up and down of terminal adhesion film, with 190 DEG C of temperature, face pressure 1.27MPa, time be 3 seconds conditions carry out heating and
Pressurization, obtains the laminated body of aluminium sheet and metal terminal adhesion film.Next, measuring being added for the laminated body using thickness gauge
The thickness B (μm) of the part of heat and pressurization.It is calculate by the following formula the thickness residual rate of metal terminal adhesion film.At this point, thick
Degree B is set as, laminated body central part 1 at and both ends (aluminium sheet and metal terminal adhesion film away from laminated body length direction
The both ends of the part of lamination) at Xiang Shangshu central part 10mm 2 at the average value at 3 in total.
Thickness residual rate (%)=(thickness B-100)/thickness A × 100 of metal terminal adhesion film
The measuring method > of the area ratio of island portion point in < island structure
Metal terminal is embedded in heat cured epoxy resin with adhesion film and is solidified.Use the rotation of commercially available product
Formula ultramicrotome (LEICA UC6) and diamond tool make the section (along the section of TD) in purpose direction, at this point, utilizing
Using the cryoultramicrotome of liquid nitrogen, section production has been carried out at -70 DEG C.Together with embeding resin, four oxidations are utilized
Ruthenium dyes a night.Since polypropylene can expand after dyeing, dilation is trimmed using ultramicrotome, for the left side 100nm
Right thickness further cuts 1 to 2 μm or so of part by being observed as follows.For the section of dyeing, use is obtained
Flied emission shape scanning electron microscope is (for example, Hitachi High-Technologies Corporation S-
4800TYPE1, determination condition: 3kV 20mA High WD6mm detector (Upper)) observation image (multiplying power 10000
Times).Next, using can be by the image processing software of image binaryzation (for example, the three imaged analysis softwares of paddy business
WinROOF (Ver7.4), island portion point and sea part for the island structure in the image carry out binaryzation, acquire island portion point institute
Space consuming ratio (area of the measurement range of total area/image of island portion point).The specific following institute of image capture conditions
It states.It should be noted that in this measurement, since the dyeing of island portion point is more than extra large part, when observing, island portion point is bright in sea
Part.
[image capture conditions]
3x3pix equalization
Binaryzation: automatic binaryzation
Isolated point remove: the object or background that removal is only made of 1 pixel.
It eliminates: acquiring shape feature value or concentration feature value, eliminate particle (by 0.005 μm2Area recognition be noise)
The manufacture > of < metal terminal adhesion film
(embodiment 1)
As polypropylene layer, preparing successively lamination has random polypropylene layer (6 μm)/block polypropylene layer (38 μm)/random
The un-stretched polypropylene film (CPP, 50 μm of aggregate thickness, 155 DEG C of melting peak temperature) of the 3-tier architecture of polypropylene layer (6 μm).It connects down
Come, two faces of un-stretched polypropylene film be utilized respectively squeeze out laminating method lamination maleic anhydride modified polypropylene, manufactured according to
Secondary lamination has sour modified polypropene layer (25 μm)/polypropylene layer (50 μm)/acid modified polypropene layer (25 μm) metal terminal use
Adhesion film.For obtained metal terminal with adhesion film measure percent thermal shrinkage discovery, be shown as 83.0% as height
Value.
(embodiment 2)
As polypropylene layer, preparing successively lamination has random polypropylene layer (8 μm)/block polypropylene layer (44 μm)/random
The un-stretched polypropylene film (CPP, 60 μm of aggregate thickness, 155 DEG C of melting peak temperature) of the 3-tier architecture of polypropylene layer (8 μm).It connects down
Come, two faces of un-stretched polypropylene film be utilized respectively squeeze out laminating method lamination maleic anhydride modified polypropylene, manufactured according to
Secondary lamination has sour modified polypropene layer (20 μm)/polypropylene layer (60 μm)/acid modified polypropene layer (20 μm) metal terminal use
Adhesion film.For obtained metal terminal with adhesion film measure percent thermal shrinkage discovery, be shown as 81.3% as height
Value.
(embodiment 3)
As polypropylene layer, preparing successively lamination has random polypropylene layer (6 μm)/block polypropylene layer (38 μm)/random
The un-stretched polypropylene film (CPP, 50 μm of aggregate thickness, 155 DEG C of melting peak temperature) of the 3-tier architecture of polypropylene layer (6 μm).It connects down
Come, using laminating method lamination maleic anhydride modified polypropylene is squeezed out on a face of un-stretched polypropylene film, has manufactured lamination
There is the metal terminal adhesion film of sour modified polypropene layer (16 μm)/polypropylene layer (50 μm).For obtained metal end
Son with adhesion film measure percent thermal shrinkage discovery, be shown as 80.1% as high level.
(embodiment 4)
As polypropylene layer, preparing successively lamination has random polypropylene layer (4 μm)/block polypropylene layer (22 μm)/random
The un-stretched polypropylene film (CPP, 30 μm of aggregate thickness, 155 DEG C of melting peak temperature) of the 3-tier architecture of polypropylene layer (4 μm).It connects down
Come, using laminating method lamination maleic anhydride modified polypropylene is squeezed out on a face of un-stretched polypropylene film, has manufactured lamination
There is the metal terminal adhesion film of sour modified polypropene layer (36 μm)/polypropylene layer (30 μm).For obtained metal end
Son with adhesion film measure percent thermal shrinkage discovery, be shown as 88.1% as high level.
(embodiment 5)
As polypropylene layer, preparing successively lamination has random polypropylene layer (4 μm)/block polypropylene layer (22 μm)/random
The un-stretched polypropylene film (CPP, 30 μm of aggregate thickness, 155 DEG C of melting peak temperature) of the 3-tier architecture of polypropylene layer (4 μm).It connects down
Come, two faces of un-stretched polypropylene film be utilized respectively squeeze out laminating method lamination maleic anhydride modified polypropylene, manufactured according to
Secondary lamination has sour modified polypropene layer (18 μm)/polypropylene layer (30 μm)/acid modified polypropene layer (18 μm) metal terminal use
Adhesion film.For obtained metal terminal with adhesion film measure percent thermal shrinkage discovery, be shown as 88.1% as height
Value.
(embodiment 6)
As polypropylene layer, prepare block polypropylene layer (60 μm) un-stretched polypropylene film (CPP, 60 μm of aggregate thickness,
159 DEG C of melting peak temperature).Laminating method lamination maleic acid is squeezed out next, being utilized respectively in two faces of un-stretched polypropylene film
Anhydride modification polypropylene, having manufactured successively lamination has sour modified polypropene layer (20 μm)/polypropylene layer (60 μm)/acid modified polypropene
The metal terminal adhesion film of layer (20 μm).Percent thermal shrinkage discovery is measured for obtained metal terminal adhesion film,
High level as being shown as 81.7%.
(embodiment 7)
As polypropylene layer, preparing successively lamination has random polypropylene layer (4 μm)/block polypropylene layer (22 μm)/random
The un-stretched polypropylene film (CPP, 30 μm of aggregate thickness, 155 DEG C of melting peak temperature) of the 3-tier architecture of polypropylene layer (4 μm).It connects down
Come, in two faces of un-stretched polypropylene film using laminating method lamination maleic anhydride modified polypropylene is squeezed out, having manufactured lamination has
Sour modified polypropene layer (16 μm)/polypropylene layer (30 μm)/acid modified polypropene (16 μm) metal terminal adhesion film.It is right
In obtained metal terminal with adhesion film measure percent thermal shrinkage discovery, be shown as 88.7% as high level.
(comparative example 1)
As polypropylene layer, preparing successively lamination has random polypropylene layer (4 μm)/block polypropylene layer (22 μm)/random
The un-stretched polypropylene film (CPP, 30 μm of aggregate thickness, 155 DEG C of melting peak temperature) of the 3-tier architecture of polypropylene layer (4 μm).It connects down
Come, two faces of un-stretched polypropylene film be utilized respectively squeeze out laminating method lamination maleic anhydride modified polypropylene, manufactured according to
Secondary lamination has sour modified polypropene layer (35 μm)/polypropylene layer (30 μm)/acid modified polypropene layer (35 μm) metal terminal use
Adhesion film.
(comparative example 2)
As polypropylene layer, preparing successively lamination has random polypropylene layer (3 μm)/block polypropylene layer (3 μm)/random poly-
The un-stretched polypropylene film (CPP, 25 μm of aggregate thickness, 155 DEG C of melting peak temperature) of the 3-tier architecture of propylene layer (19 μm).It connects down
Come, using laminating method lamination maleic anhydride modified polypropylene is squeezed out on a face of un-stretched polypropylene film, has manufactured lamination
There is the metal terminal adhesion film of sour modified polypropene layer (41 μm)/polypropylene layer (25 μm).
(comparative example 3)
As polypropylene layer, prepare stretched polypropylene films (OPP, homo-polypropylene, 50 μm of thickness, 165 DEG C of melting peak temperature).
Laminating method lamination maleic anhydride modified polypropylene is squeezed out next, being utilized respectively in two faces of stretched polypropylene films, manufacture
Successively lamination has sour modified polypropene layer (25 μm)/polypropylene layer (50 μm)/acid modified polypropene layer (25 μm) metal terminal
Use adhesion film.
The section of un-stretched polypropylene layer used in Examples 1 to 5 and Comparative Examples 1 and 2 is used into ruthenium tetroxide (RuO4)
After dyeing, when observing scanning electron microscope photo, island structure observed.On the other hand, for making in comparative example 3
Oriented polypropylene layer when being carried out similarly observation, does not observe island structure.
(manufacture of packaging material)
Prepare using the chemical conversion treatment fluid being made of phenolic resin, charomic fluoride (trivalent) compound, 3 ingredient of phosphoric acid
Aluminium foil (40 μm of thickness) after chemical conversion processing (processing of phosphoric acid chromate) has been carried out to two faces.Next, by the aluminium
One face of foil and biaxial stretch-formed nylon membrane (25 μm of thickness) are across urethane adhesive progress lamination.Next, by aluminium foil
Another face and un-stretched polypropylene film (30 μm of thickness) using sour modified polypropylene resin, (15 μm of thickness, use unsaturation
Carboxylic acid graft modified polypropylene) interlayer lamination is carried out, and utilize the softening point of Hot-blast Heating to sour modified polypropylene resin
Above temperature, having manufactured successively lamination has biaxial stretch-formed nylon membrane (25 μm)/aluminium foil (40 μm of thickness)/acid modified polypropene tree
The packaging material of rouge (15 μm of thickness)/un-stretched polypropylene film (15 μm).Using obtained packaging material, carry out above-mentioned
The measurement of sealing intensity.
[table 1]
In table 1, PP means that polypropylene, PPa mean sour modified polypropene.
As shown in Table 1, by having the laminated body structure of at least 1 layer polypropylene layer, at least 1 layer sour modified polypropene layer
At least constitutes the surface layer of at least one surface side of metal terminal adhesion film at, sour modified polypropene layer, observe polypropylene layer
Section scanning electron microscope photo when observe island structure and be with the aggregate thickness of sour modified polypropene layer
The metal terminal adhesion film of Examples 1 to 5 of the aggregate thickness of polypropylene layer in the range of 0.7~3.5 when 1, with packet
The sealing intensity (i.e. adaptation) of package material and metal terminal is high, and electrolyte resistance is also excellent.On the other hand, poly- third
Although polypropylene layer when with above-mentioned island structure but with the aggregate thickness of sour modified polypropene layer being 1 in alkene layer is total
The metal terminal adhesion film of Comparative Examples 1 and 2 of the thickness other than 0.7~3.5 range, with packaging material and metal terminal
Adaptation it is poor.In addition, though meeting the metal end for not having the comparative example 3 of above-mentioned island structure in the range but polypropylene layer
Sub- adhesion film, it is poor with the adaptation and electrolyte resistance of packaging material and metal terminal.In addition, in Examples 1 to 7,
28.0% or more is all had in this way in the case where measuring island area by binaryzation about the island structure of polypropylene layer
Big value, about sour modified polypropene layer, it may have 24.5% or more value big in this way.On the other hand, it in comparative example 3, closes
In the island structure of polypropylene layer, when measuring island area by binaryzation, the ratio of area is 1.57% very low in this way
Value, it is thus identified that substantially do not have island structure.
Symbol description
1 metal terminal adhesion film
2 metal terminals
3 packaging materials
The edge part of 3a packaging material
4 cell devices
10 batteries
11 polypropylene layers
12 sour modified polypropene layers
31 substrate layers
32 adhesive layers
33 barrier layers
34 heat fusion property resin layers
35 adhesive layers
The center P
The part of S heat-sealing
Claims (6)
1. a kind of metal terminal adhesion film, it is characterised in that:
It is present in the metal terminal being electrically connected with the electrode of cell device and the encapsulation cell device packaging material it
Between metal terminal adhesion film,
The metal terminal adhesion film is by having at least 1 layer of polypropylene layer and at least 1 layer of sour modified polypropene layer
Laminated body is constituted,
The acid modified polypropene layer constitutes the surface layer of at least one surface side of the metal terminal adhesion film,
Island structure is observed when observing the section of the polypropylene layer using electron micrograph,
When aggregate thickness with the sour modified polypropene layer is 1, the aggregate thickness of the polypropylene layer 0.7 or more 3.5 with
Under range in,
The polypropylene layer has the layer being made of random polypropylene, the layer being made of block polypropylene and by nothing with successively lamination
The laminated construction for the layer that isotactic polypropylene is constituted.
2. metal terminal adhesion film as described in claim 1, it is characterised in that:
The polypropylene layer is made of un-stretched polypropylene.
3. metal terminal adhesion film as claimed in claim 1 or 2, it is characterised in that:
When measuring the metal terminal adhesion film using differential scanning calorimetry (DSC), in 150 DEG C or more 165 DEG C of ranges below
Observe melting peak.
4. metal terminal adhesion film as claimed in claim 1 or 2, it is characterised in that:
The thickness residual rate of the metal terminal adhesion film measured using following measuring method is 50% or more:
Prepare the aluminium sheet and the metal terminal adhesion film with a thickness of 100 μm；
Measure the thickness A (μm) of the metal terminal adhesion film；
In such a way that the length direction and width direction for making the aluminium sheet and the metal terminal adhesion film are consistent, described
The central part of aluminium sheet stacks the metal terminal adhesion film；
Prepare 2 length for being longer than the aluminium sheet and width for the metal plate of 7mm, to cover the metal terminal adhesion film
Entire surface mode, from the aluminium sheet and the metal terminal adhesion film up and down, with 190 DEG C of temperature, face pressure
1.27MPa, the condition that the time is 3 seconds, are heated and pressurizeed using the metal plate, obtain the aluminium sheet and the metal
The laminated body of terminal adhesion film；
Measure the thickness B (μm) for the part of the laminated body being heated and pressurizeed；
Using following formula, the thickness residual rate of the metal terminal adhesion film is calculated,
Thickness residual rate (%)=(thickness B-100)/thickness A × 100 of metal terminal adhesion film.
5. metal terminal adhesion film as claimed in claim 1 or 2, it is characterised in that:
The percent thermal shrinkage of the flow direction of the metal terminal adhesion film is 70~90%.
6. metal terminal adhesion film as claimed in claim 1 or 2, it is characterised in that:
The packaging material is made of the laminated body at least successively having substrate layer, barrier layer and heat fusion property resin layer,
The metal terminal is present between the heat fusion property resin layer and the metal terminal with adhesion film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911035695.6A CN110808342B (en) | 2016-12-16 | 2017-12-15 | Adhesive film for metal terminal |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| PCT/JP2017/045160 WO2018110702A1 (en) | 2016-12-16 | 2017-12-15 | Adhesive film for metal terminals and battery |
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| CN201911035695.6A Division CN110808342B (en) | 2016-12-16 | 2017-12-15 | Adhesive film for metal terminal |
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| CN108886117A CN108886117A (en) | 2018-11-23 |
| CN108886117B true CN108886117B (en) | 2019-11-26 |
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| CN201780018097.0A Active CN108886117B (en) | 2016-12-16 | 2017-12-15 | Metal terminal adhesion film and battery |
| CN201911035695.6A Active CN110808342B (en) | 2016-12-16 | 2017-12-15 | Adhesive film for metal terminal |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911035695.6A Active CN110808342B (en) | 2016-12-16 | 2017-12-15 | Adhesive film for metal terminal |
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| JP (3) | JP6402844B1 (en) |
| KR (2) | KR102631758B1 (en) |
| CN (2) | CN108886117B (en) |
| WO (1) | WO2018110702A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3813143A4 (en) * | 2018-06-20 | 2022-03-09 | Dai Nippon Printing Co., Ltd. | Adhesive film for metal terminal, metal terminal with adhesive film, and battery |
| KR102089415B1 (en) * | 2018-07-24 | 2020-03-17 | 율촌화학 주식회사 | Sealing film for secondary battary lead tab |
| KR102643219B1 (en) * | 2018-08-08 | 2024-03-05 | 주식회사 엘지에너지솔루션 | Secondary battery comprising lead film having light emitting material and method for detecting fault of secondary cell |
| WO2021006350A1 (en) * | 2019-07-10 | 2021-01-14 | 大日本印刷株式会社 | Adhesive film for metal terminal, metal terminal with adhesive film for metal terminal, power storage device using said adhesive film for metal terminal, and method for producing power storage device |
| KR20220035371A (en) * | 2019-07-17 | 2022-03-22 | 다이니폰 인사츠 가부시키가이샤 | Packaging material for electrical storage device, manufacturing method thereof, and electrical storage device |
| JP6863541B1 (en) * | 2019-11-08 | 2021-04-21 | 大日本印刷株式会社 | Adhesive film for metal terminals, method for manufacturing adhesive film for metal terminals, metal terminal with adhesive film for metal terminals, power storage device using the adhesive film for metal terminals, and method for manufacturing power storage device |
| WO2021090951A1 (en) * | 2019-11-08 | 2021-05-14 | 大日本印刷株式会社 | Adhesive film for metal terminal, method for manufacturing adhesive film for metal terminal, metal terminal with adhesive film for metal terminal, power storage device using adhesive film for metal terminal, and method for manufacturing power storage device |
| WO2021090950A1 (en) * | 2019-11-08 | 2021-05-14 | 大日本印刷株式会社 | Adhesive film for metal terminal, method for producing adhesive film for metal terminal, metal terminal with adhesive film for metal terminal attached thereto, power storage device using said adhesive film for metal terminal, and method for producing power storage device |
| CN114667633A (en) * | 2019-11-08 | 2022-06-24 | 大日本印刷株式会社 | Adhesive film for metal terminal, method for producing adhesive film for metal terminal, metal terminal with adhesive film for metal terminal, electricity storage device using adhesive film for metal terminal, and method for producing electricity storage device |
| KR102322332B1 (en) * | 2019-12-10 | 2021-11-10 | 율촌화학 주식회사 | A film for lead tab and integrated cell pouch comprising the same |
| JP6954437B2 (en) * | 2020-03-04 | 2021-10-27 | 大日本印刷株式会社 | Adhesive film for metal terminals, method for manufacturing adhesive film for metal terminals, metal terminal with adhesive film for metal terminals, power storage device using the adhesive film for metal terminals, and method for manufacturing power storage device |
| EP4129653A1 (en) * | 2020-03-26 | 2023-02-08 | Dai Nippon Printing Co., Ltd. | Packaging material for power storage device, method of producing same, and power storage device |
| KR20220162120A (en) * | 2020-04-02 | 2022-12-07 | 다이니폰 인사츠 가부시키가이샤 | Adhesive film for metal terminals, manufacturing method of adhesive film for metal terminals, metal terminal with adhesive film for metal terminals, electrical storage device, and manufacturing method of electrical storage device |
| JP2022078571A (en) * | 2020-11-13 | 2022-05-25 | 凸版印刷株式会社 | Resin film for terminal, and power storage device using the same |
| CN112768844B (en) * | 2021-01-12 | 2023-03-24 | 天津市捷威动力工业有限公司 | Long-lasting tab and application |
| JP2023523113A (en) * | 2021-03-31 | 2023-06-02 | 寧徳新能源科技有限公司 | battery |
| WO2023022191A1 (en) * | 2021-08-19 | 2023-02-23 | 大日本印刷株式会社 | Adhesive film for metal terminal, method for producing adhesive film for metal terminal, metal terminal provided with adhesive film for metal terminal, power storage device, and method for producing power storage device |
| JP2023144563A (en) | 2022-03-28 | 2023-10-11 | 藤森工業株式会社 | Adhesive film, metal terminal including the same, and secondary battery |
| JP2023176972A (en) * | 2022-06-01 | 2023-12-13 | Ｔｏｐｐａｎホールディングス株式会社 | Exterior material for power storage device and power storage device using the same |
| JP2023179176A (en) * | 2022-06-07 | 2023-12-19 | Ｔｏｐｐａｎホールディングス株式会社 | Terminal film for power storage devices and power storage device employing the same |
| WO2024111673A1 (en) * | 2022-11-25 | 2024-05-30 | 大日本印刷株式会社 | Metal terminal adhesive film, production method therefor, metal terminal equipped with metal terminal adhesive film, power storage device external packaging material, kit comprising power storage device external packaging material and metal terminal adhesive film, power storage device, and production method therefor |
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| JP2015232945A (en) * | 2014-06-09 | 2015-12-24 | 凸版印刷株式会社 | Terminal film for power storage device and power storage device |
| JP2016091939A (en) * | 2014-11-10 | 2016-05-23 | 凸版印刷株式会社 | Resin film for terminal, tab using the same and power storage device |
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| EP1981099B1 (en) * | 2007-03-30 | 2012-10-03 | Dai Nippon Printing Co., Ltd. | Packaging material for flat electrochemical cell |
| JP5114260B2 (en) * | 2007-03-30 | 2013-01-09 | 大日本印刷株式会社 | Packaging material for flat electrochemical cells |
| JP2009057400A (en) * | 2007-08-29 | 2009-03-19 | Sumitomo Electric Ind Ltd | Adhesive film and method for producing the same, and electric part, non-aqueous electrolytic battery, lead wire, and enclosing container, using the adhesive film |
| JP2011255654A (en) * | 2010-06-11 | 2011-12-22 | Asahi Kasei E-Materials Corp | Laminated microporous film, method for producing the same and separator for battery |
| CN102140204B (en) * | 2011-05-04 | 2014-06-11 | 金发科技股份有限公司 | Polypropylene composition and preparation method thereof |
| JP6159516B2 (en) * | 2012-09-24 | 2017-07-05 | 大倉工業株式会社 | Terminal adhesive tape and method of manufacturing the tape |
| JP6055302B2 (en) * | 2012-12-20 | 2016-12-27 | 大倉工業株式会社 | Heat-seal tape for bonding battery lead terminals that prevents shrinkage |
| JP2014026980A (en) * | 2013-09-17 | 2014-02-06 | Showa Denko Packaging Co Ltd | Electrochemical device |
| JP2015079638A (en) | 2013-10-17 | 2015-04-23 | 大倉工業株式会社 | Terminal with adhesive tape, method of manufacturing terminal with adhesive tape, and thin battery |
| JP2015046405A (en) * | 2014-11-06 | 2015-03-12 | 凸版印刷株式会社 | Sheath material for lithium ion batteries |
| JP6527354B2 (en) * | 2014-12-26 | 2019-06-05 | 三井化学株式会社 | Battery member film |
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2017
- 2017-12-15 KR KR1020197018160A patent/KR102631758B1/en active IP Right Grant
- 2017-12-15 CN CN201780018097.0A patent/CN108886117B/en active Active
- 2017-12-15 WO PCT/JP2017/045160 patent/WO2018110702A1/en active Application Filing
- 2017-12-15 JP JP2018529187A patent/JP6402844B1/en active Active
- 2017-12-15 CN CN201911035695.6A patent/CN110808342B/en active Active
- 2017-12-15 KR KR1020247003046A patent/KR20240017107A/en not_active Application Discontinuation
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2018
- 2018-09-13 JP JP2018171416A patent/JP7056483B2/en active Active
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2022
- 2022-04-06 JP JP2022063645A patent/JP7375850B2/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2015232945A (en) * | 2014-06-09 | 2015-12-24 | 凸版印刷株式会社 | Terminal film for power storage device and power storage device |
| JP2016091939A (en) * | 2014-11-10 | 2016-05-23 | 凸版印刷株式会社 | Resin film for terminal, tab using the same and power storage device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2019003950A (en) | 2019-01-10 |
| KR20190089930A (en) | 2019-07-31 |
| WO2018110702A1 (en) | 2018-06-21 |
| JP6402844B1 (en) | 2018-10-10 |
| JP7375850B2 (en) | 2023-11-08 |
| CN110808342B (en) | 2022-09-30 |
| KR20240017107A (en) | 2024-02-06 |
| JP7056483B2 (en) | 2022-04-19 |
| CN108886117A (en) | 2018-11-23 |
| CN110808342A (en) | 2020-02-18 |
| JPWO2018110702A1 (en) | 2018-12-20 |
| JP2022095833A (en) | 2022-06-28 |
| KR102631758B1 (en) | 2024-02-01 |
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