CN105027318A - Opening sealing body - Google Patents
Opening sealing body Download PDFInfo
- Publication number
- CN105027318A CN105027318A CN201480009506.7A CN201480009506A CN105027318A CN 105027318 A CN105027318 A CN 105027318A CN 201480009506 A CN201480009506 A CN 201480009506A CN 105027318 A CN105027318 A CN 105027318A
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- China
- Prior art keywords
- seal body
- conductive metal
- positive cover
- alloy
- battery
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- 238000007789 sealing Methods 0.000 title abstract 4
- 239000011888 foil Substances 0.000 claims abstract description 43
- 229910052751 metal Inorganic materials 0.000 claims description 99
- 239000002184 metal Substances 0.000 claims description 99
- 229910045601 alloy Inorganic materials 0.000 claims description 40
- 239000000956 alloy Substances 0.000 claims description 40
- 229920005989 resin Polymers 0.000 claims description 15
- 239000011347 resin Substances 0.000 claims description 15
- 229910001416 lithium ion Inorganic materials 0.000 claims description 10
- 229910052718 tin Inorganic materials 0.000 claims description 5
- 229910020830 Sn-Bi Inorganic materials 0.000 claims description 4
- 229910020888 Sn-Cu Inorganic materials 0.000 claims description 4
- 229910018728 Sn—Bi Inorganic materials 0.000 claims description 4
- 229910019204 Sn—Cu Inorganic materials 0.000 claims description 4
- 239000005030 aluminium foil Substances 0.000 claims 1
- 230000001681 protective effect Effects 0.000 abstract 3
- 230000006870 function Effects 0.000 description 20
- 238000012856 packing Methods 0.000 description 17
- 238000009740 moulding (composite fabrication) Methods 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 9
- 239000003792 electrolyte Substances 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 6
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- -1 polyethylene Polymers 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 229910016334 Bi—In Inorganic materials 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 4
- 239000007769 metal material Substances 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 229910020994 Sn-Zn Inorganic materials 0.000 description 3
- 229910009069 Sn—Zn Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 229910017944 Ag—Cu Inorganic materials 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 229910001020 Au alloy Inorganic materials 0.000 description 2
- 229910000521 B alloy Inorganic materials 0.000 description 2
- 229910001152 Bi alloy Inorganic materials 0.000 description 2
- 229910016331 Bi—Ag Inorganic materials 0.000 description 2
- 229910020630 Co Ni Inorganic materials 0.000 description 2
- 229910002440 Co–Ni Inorganic materials 0.000 description 2
- 229910017932 Cu—Sb Inorganic materials 0.000 description 2
- 229910000927 Ge alloy Inorganic materials 0.000 description 2
- 229910017709 Ni Co Inorganic materials 0.000 description 2
- 229910003267 Ni-Co Inorganic materials 0.000 description 2
- 229910018104 Ni-P Inorganic materials 0.000 description 2
- 229910003262 Ni‐Co Inorganic materials 0.000 description 2
- 229910018536 Ni—P Inorganic materials 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 229910020836 Sn-Ag Inorganic materials 0.000 description 2
- 229910020882 Sn-Cu-Ni Inorganic materials 0.000 description 2
- 229910020935 Sn-Sb Inorganic materials 0.000 description 2
- 229910020988 Sn—Ag Inorganic materials 0.000 description 2
- 229910008757 Sn—Sb Inorganic materials 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 2
- 239000011149 active material Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000002788 crimping Methods 0.000 description 2
- 239000002001 electrolyte material Substances 0.000 description 2
- 229910052741 iridium Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 229910052703 rhodium Inorganic materials 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 229910052707 ruthenium Inorganic materials 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000010944 silver (metal) Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 229910020598 Co Fe Inorganic materials 0.000 description 1
- 229910002519 Co-Fe Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 229910020900 Sn-Fe Inorganic materials 0.000 description 1
- 229910019343 Sn—Cu—Sb Inorganic materials 0.000 description 1
- 229910019314 Sn—Fe Inorganic materials 0.000 description 1
- 229910018956 Sn—In Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910007567 Zn-Ni Inorganic materials 0.000 description 1
- 229910007564 Zn—Co Inorganic materials 0.000 description 1
- 229910007614 Zn—Ni Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000008719 thickening Effects 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
- H01M50/147—Lids or covers
- H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/583—Devices or arrangements for the interruption of current in response to current, e.g. fuses
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- 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
- H01M50/109—Primary casings; Jackets or wrappings characterised by their shape or physical structure of button or coin shape
-
- 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
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/153—Lids or covers characterised by their shape for button or coin 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
- H01M50/171—Lids or covers characterised by the methods of assembling casings with lids using adhesives or sealing agents
-
- 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
- H01M50/30—Arrangements for facilitating escape of gases
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/0241—Structural association of a fuse and another component or apparatus
-
- 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)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Gas Exhaust Devices For Batteries (AREA)
- Fuses (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
Provided is an opening sealing body for a hermetic battery, the opening sealing body being capable of being manufactured easily and being capable of being further reduced in size. An opening sealing body for a hermetic battery has (1) a first positive electrode cap which has a staking section and a gas vent opening, (2) an electrically conductive metallic foil which is located on the first positive electrode cap, (3) a protective element which is located on the electrically conductive metallic foil and which has a fuse function, and (4) a second positive electrode cap which is located on the protective element and which has a gas vent opening. The electrically conductive metallic foil, the protective element, and the second positive electrode cap are staked together by the staking section of the first positive electrode cap.
Description
Technical field
The present invention relates to a kind of seal body of enclosed-type battery.
Background technology
Lithium ion battery has that energy density is high, operating voltage is high, electric discharge time voltage stationarity excellent, self discharge is few, there is not the advantages such as memory effect, is therefore suitable as the power supply of such as mobile phone, personal computer, video camera etc.But, contain organic solvent as in the rechargeable battery of electrolyte at lithium ion battery etc., exist because overcharge, internal short-circuit etc. are abnormal or use by mistake, and cause electrolyte decomposition, produce gas at inside battery, in battery, press the problems such as liter.
For such problem, such as, Patent Document 1 discloses a kind of enclosed-type battery with seal body 100, as shown in Figure 1, this seal body 100 comprises: have the valve gap 102 of steam vent, be positioned at explosion-proof valve 106 on valve gap 102 across inner packing ring 104, be positioned at the PTC element 108 on explosion-proof valve 106 and be positioned at the positive terminal 110 with steam vent on PTC element 108.If the inner pressure of battery with the enclosed-type battery of this seal body exceedes set point, then explosion-proof valve 106 works, and prevents the rising of pressure in battery by being discharged to outside batteries by gas.
At first technical literature
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 11-283588 publication
But, in above-mentioned such seal body, because explosion-proof valve becomes the path of electric current when normal, therefore in order to reliably realize explosion-proof valve 106 and the electrical connection of valve gap 102, need the welding carrying out both at their link position 112 place.Therefore, when manufacturing seal body, needing welding sequence, there is manufacturing process and become loaded down with trivial details such problem.
In addition, PTC element works (tripping operation) when exception and becomes high resistance, can be breaking at the electric current flowed in this PTC element, but the Weak current (leakage current) that can circulate after work.But, different and require that circuit disconnects completely according to the kind of exception.Therefore, in seal body in the past, in order to cut off this Weak current, to the additional function as failure of current mechanism (CID:CurrentInterrupt Device) of explosion-proof valve.Therefore, in above-mentioned seal body 100, after explosion-proof valve work, in order to valve gap 102 and the electrical connection of explosion-proof valve 106 can be cut off, between valve gap 102 and the flange part of explosion-proof valve 106, be provided with the inside packing ring 104 of insulating properties.Therefore, the thickness that there is seal body entirety is correspondingly thickening such problem because of the thickness of packing ring.In addition, because number of components increases, the impact of size (thickness) deviation that therefore all parts is intrinsic becomes large, and also there is the load pressure putting on PTC element because of ca(u)lk unstable, the voltage-resistent characteristic of PTC element reduces such problem.
In addition, because explosion-proof valve possesses as the function of explosion-proof valve and the function as failure of current mechanism simultaneously, therefore also there is shape and the complex structure of explosion-proof valve, the loaded down with trivial details such problem of processing of explosion-proof valve itself.
Summary of the invention
The problem that invention will solve
Therefore, problem to be solved by this invention is, a kind of easy manufacture is provided and can be miniaturized further the seal body of enclosed-type battery.
For solving the method for problem
First purport is, the invention provides a kind of seal body, its seal body being enclosed-type battery, and the feature of described seal body is to have:
(1) first positive cover, it has ca(u)lk portion and exhaust outlet;
(2) conductive metal foil, it is positioned in the first positive cover;
(3) protection component, it is positioned in conductive metal foil, and has fuse function; And
(4) second positive cover, it is positioned on protection component, and has exhaust outlet,
Described conductive metal foil, described protection component and described second positive cover is fixed by the ca(u)lk portion of described first positive cover.
In seal body of the present invention, because the protection component of the fuse function with above-mentioned (3) plays function as failure of current mechanism, therefore conductive metal foil only need play function as explosion-proof valve.Therefore, conductive metal foil is without the need to adopting complicated shape and structure.In addition, without the need to the insulation of the flange part and the first positive cover of guaranteeing conductive metal foil.Therefore, without the need to configuring insulating properties packing ring between conductive metal foil and the first positive cover.In addition, conductive metal foil contacts with the first positive pole capping, and the pressing undertaken by the ca(u)lk portion of the first positive cover and reliably complete the electrical connection of conductive metal foil and the first positive cover, therefore without the need to welding conductive metal foil and the first positive cover.
Second purport is, the invention provides a kind of enclosed-type battery with seal body of the present invention.
Invention effect
Seal body of the present invention uses the protection component with fuse function as failure of current mechanism, can simplify the shape as the conductive metal foil of explosion-proof valve and structure, in addition, without the need to welding conductive metal foil and the first positive cover.The manufacture of seal body can be simplified thus.Further, more miniaturized seal body can be provided.
Accompanying drawing explanation
Fig. 1 schematically shows the seal body of enclosed-type battery in the past by cutaway view.
Fig. 2 schematically shows a mode of the seal body of enclosed-type battery of the present invention by cutaway view.
Fig. 3 schematically shows the seal body of Fig. 2 by vertical view.
Embodiment
Below, with reference to accompanying drawing, seal body of the present invention is described in detail.But seal body of the present invention is not limited to illustrated mode.
In fig. 2 by schematically showing a mode of seal body of the present invention along the cutaway view of its thickness direction, schematically shown a mode of seal body of the present invention in figure 3 by vertical view.
Illustrated seal body 10 is seal bodies of cylinder battery; in the first positive cover 12; sequentially laminated with conductive metal foil 14, the protection component 16 with fuse function and the second positive cover 18; seal body 10 has the insulating properties packing ring 22 on the flange part (outer edge) 20 of surrounding and the second positive cover 18 being positioned at above-mentioned component, and they are fixed by being positioned at the ca(u)lk portion 24 of the edge part of the first positive cover 12.
In illustrated mode, the first positive cover 12 has exhaust outlet 26 in the central portion.This exhaust outlet 26 is arranged in use in because of the abnormal response of electrolyte and/or active material etc. when inside battery generation gas causes inner pressure of battery to rise and makes explosion-proof valve work, and is discharged by gas to outside batteries.Therefore, directly over exhaust outlet 26, preferably there is not the protection component with fuse function.In addition, the first positive cover 12 has ca(u)lk portion 24, in the first positive cover 12, after other components forming seal body are arranged at the position of regulation, is fixed by miscellaneous part by being bent to the inside in this ca(u)lk portion 24.
In the present invention, the first positive cover is formed by conductive metal.This conductive metal is not particularly limited, and such as, when seal body is lithium ion battery seal body, is preferably aluminum or aluminum alloy.
In illustrated mode, conductive metal foil 14 is discoid metal formings, plays function as explosion-proof valve.In addition, when normal, conductive metal foil 14 prevents electrolyte from spilling to outside batteries via exhaust outlet.
In the present invention, be then not particularly limited as long as the metal material forming conductive metal foil 14 has corrosion proof material for electrolyte, such as, when seal body is lithium ion battery seal body, be preferably aluminum or aluminum alloy.
As long as the thickness that the thickness of above-mentioned conductive metal foil can play function as explosion-proof valve is then not particularly limited.Those skilled in the art can according to the structure of seal body; especially the internal diameter of protection component; suitably determine the thickness of above-mentioned conductive metal foil, to make when being loaded with desired pressure (in general for 10 ~ 15kgf), explosion-proof valve work (breaking).
Above-mentioned conductive metal foil easily can be manufactured by the manufacture method of such as rolling common like this metal forming.
In the present invention, the protection component with fuse function refers to, can circulate in seal body super-high-current fuse, thus cut off the protection component with the fuse function of non-recovery type of this super-high-current.
In illustrated mode, protection component 16 is following protection components (dish-type protection component), in circular and comprise:
(i) layered component, it is formed by insulative resin, and has at least one pass through openings portion;
(ii) conductive metal thin layer electrode, it is positioned on each first type surface of layered component; And
(iii) fuse layer, its be positioned at specify at least one this pass through openings portion side on, and to be electrically connected with conductive metal thin layer electrode.
It should be noted that, in illustrated mode, in order to easy, eliminate fuse layer and be positioned at the diagram of the conductive metal thin layer electrode on each first type surface of layered component, illustrate protection component 16 as a whole.This dish-type protection component is such as open by No. 2012/118153rd, International Publication (the whole disclosures comprising protection component illustrated in accompanying drawing and manufacture method thereof by referring to and introduce in this specification).
The layered component formed by above-mentioned insulative resin has at least one pass through openings portion.This pass through openings portion extends and through layered component along the thickness direction of layered component, in inside battery, produce gas and explosion-proof valve work, this pass through openings portion is communicated with the exhaust outlet 26 of the first positive cover and exhaust outlet 28 gas of the second positive cover, the gas produced at inside battery can be discharged to outside batteries.Position and the quantity in this pass through openings portion are not particularly limited, and can arrange one at the central part of layered component, or also can arrange multiple in all shape parts of the circular layered component with through peristome, such as two, three or four.
As long as the resin that the insulative resin forming layered component has insulating properties is then not particularly limited.Such as, the resins such as polyethylene, polypropylene, Merlon, fluororesin, ABS resin, polycarbonate-ABS alloy resin, PBT resin, elastomer can be illustrated.Especially the resin that polyethylene, polyvinylidene fluoride are so is preferably used.
This layered component has the conductive metal thin layer electrode be configured on the first type surface of its both sides and forms.As long as this conductive metal thin layer electrode has the thin layer of the metal of conductivity (such as, thickness is 0.1 μm ~ about 100 μm) be then not particularly limited, such as can be made up of metals such as copper, nickel, aluminium, gold, also can be formed by multiple thin metal layer.
The layered component that each first type surface possesses conductive metal thin layer electrode can manufacture in the following way, namely, by pressing the insulative resin forming layered component and the sheet metal (or metal forming) forming thin metal layer simultaneously, thus obtain the extrudate accompanying the state of insulative resin between sheet metal (or metal forming).In other mode, also can manufacture in the following way, that is, such as be obtained the nonwoven fabric from filaments of insulative resin by pressing, this nonwoven fabric from filaments is clipped between sheet metal (or metal forming), their thermo-compressed is integrated and obtains crimping thing.In addition, in other mode, also by implementing the coating of conductive metal to the layered component of insulative resin, thus conductive metal thin layer electrode can be formed on the first type surface of both sides.The state that the layered component that the first type surface that the layered component (extrudate or crimping thing etc.) with conductive metal obtained like this is in both sides has multiple insulative resins of conductive metal thin layer electrode adjoins and gathers, by cutting this layered component with the shape of regulation, size, the independent layered component with conductive layer can be obtained.
For the form of layered component, as long as the size of thickness direction is less than the size in other directions, is preferably very little (such as lamellar morphology), is then not particularly limited.In illustrated mode, the flat shape of layered component is circular, but is not particularly limited, and is preferably the shape corresponding with the flat shape of seal body.
Above-mentioned protection component has fuse layer, this fuse layer be positioned at specify at least one pass through openings portion side on, and to be electrically connected with the conductive metal thin layer electrode of the both sides first type surface being positioned at layered component.
In the present invention, above-mentioned fuse layer can be a metal level, also can comprise multiple metal levels that fusing point is different, but preferably includes the different multiple metal levels of fusing point.
As the metal material forming above-mentioned metal level, as long as there is conductivity be then not particularly limited, such as, Ni can be enumerated, Cu, Ag, Au, Al, Zn, Rh, Ru, Ir, Pd, Pt, Ni-Au alloy, Ni-P alloy, Ni-B alloy, Sn, Sn-Ag alloy, Sn-Cu alloy, Sn-Ag-Cu alloy, Sn-Ag-Cu-Bi alloy, Sn-Ag-Cu-Bi-In alloy, Sn-Ag-Bi-In alloy, Sn-Ag-Cu-Sb alloy, Sn-Sb alloy, Sn-Cu-Ni-P-Ge alloy, Sn-Cu-Ni alloy, Sn-Ag-Ni-Co alloy, Sn-Ag-Cu-Co-Ni alloy, Su-Bi-Ag alloy, Sn-Zn alloy, Sn-In alloy, Sn-Cu-Sb alloy, Sn-Fe alloy, Zn-Ni alloy, zn-fe alloy, Zn-Co alloy, Zn-Co-Fe alloy, Sn-Zn alloy, Pd-Ni alloy and Sn-Bi alloy.
Be preferably, above-mentioned fuse layer comprises: by from Ni, Cu, Ag, Au, Al, Zn, Sn, Rh, Ru, Ir, Pd, Pt, Ni-Au alloy, the metal level that the metal material selected in Ni-P alloy and Ni-B alloy is formed, and by from Sn, Sn-Ag alloy, Sn-Cu alloy, Sn-Ag-Cu alloy, Sn-Ag-Cu-Bi alloy, Sn-Ag-Cu-Bi-In alloy, Sn-Ag-Bi-In alloy, Sn-Ag-Cu-Sb alloy, Sn-Sb alloy, Sn-Cu-Ni-P-Ge alloy, Sn-Cu-Ni alloy, Sn-Ag-Ni-Co alloy, Sn-Ag-Cu-Co-Ni alloy, Su-Bi-Ag alloy, another metal level that the metal material selected in Sn-Zn alloy and Sn-Bi alloy is formed.Be more preferably, above-mentioned fuse layer comprises the metal level formed by Ni and the metal level formed by Sn, Sn-Cu alloy or Sn-Bi alloy.
Like this, by fuse layer being set to the different multiple metal levels of fusing point, when super-high-current is for flowing from the conductive metal thin layer electrode on a first type surface towards the conductive metal thin layer electrode on another first type surface, super-high-current is concentrated and is flow through fuse layer and generate heat, consequently, first, the metal level melting formed by the metal with relatively low fusing point.Consequently, flow through the electric current of this metal level to the metal level flowing formed by the metal with relatively high fusing point, the electric current flowing through this metal level increases, and the rapid melting of the metal level formed by the metal with relatively high fusing point, quickly and reliably cuts off super-high-current thus.By adopting such structure; for the super-high-current of rated current significantly not exceeding fuse layer; such as, super-high-current about the twice of rated capacity, also can provide reliable protection, can improve the function as failure of current mechanism of protection component.
In a mode, conductive metal thin layer electrode in (ii) conductive metal thin layer electrode of above-mentioned protection component, conductive metal foil side can be omitted.In this case, conductive metal foil also as dish-type protection component an electrode and play function.That is, conductive metal foil connects with the first type surface of above-mentioned layered component, is directly connected with the conductive metal thin layer electrode of the second positive cover side by the fuse layer of above-mentioned dish-type protection component.By adopting such structure, the conductive metal thin layer electrode of a side can be omitted, therefore, it is possible to reduce number of components, can thickness be reduced in addition.
In illustrated mode, the second positive cover 18 has exhaust outlet 28.This exhaust outlet 28 is identical with the exhaust outlet 26 of above-mentioned first positive cover 12, is arranged in use in and produces gas because of the abnormal response of electrolyte and/or active material etc. at inside battery, when causing inner pressure of battery rise and explosion-proof valve is worked, is discharged by gas.
In the present invention, the second positive cover is formed by conductive metal.This conductive metal is not particularly limited, but such as when seal body is lithium ion battery seal body, is preferably nickel-plated steel.
In illustrated mode, around conductive metal foil 14, protection component 16 and the second positive cover 18 and on the flange part 20 of the second positive cover 18, be provided with insulating properties packing ring 22.Conductive metal foil 14, protection component 16, second positive cover 18 and insulating properties packing ring 22, after arranging as illustrated, are fixed by the ca(u)lk portion 24 of the first positive cover 12.
In the present invention, as long as insulating properties packing ring has corrosion resistance for electrolyte and has insulating properties, then conventional packing ring can be used.Such as, as the material of this insulating properties packing ring, insulative resin can be enumerated, such as polypropylene, polyethylene etc.
Above-mentioned insulating properties packing ring guarantee the first positive cover, protection component (specifically, in illustrated mode be protection component the second positive cover side first type surface on conductive metal thin layer electrode) and the second positive cover between insulation.By making to insulate between this first positive cover and protection component and the second positive cover, can prevent electric current from directly flowing to the second positive cover from the first positive cover, in other words, can prevent electric current from not circulating via fuse layer.By adopting such structure, protection component work and cut off the electric current circulated to the second positive cover via protection component from conductive metal foil, can be breaking at the electric current circulated in seal body thus.In addition, above-mentioned insulating properties packing ring prevents the leakage of electrolyte.
In seal body of the present invention, when producing super-high-current because certain is abnormal, there is the protection component work of fuse function, cut off this electric current.In addition, when battery generates gas inside and to cause in battery pressure to exceed set point, as the conductive metal foil work of explosion-proof valve, the outside of gas to battery is discharged, prevents the interior pressure exception rising of battery thus.
In a mode, in seal body of the present invention, before the conductive metal foil work as explosion-proof valve, make the protection component work with fuse function, cut off electric current.
Illustrated seal body 10 such as can be manufactured by following mode.
First, the first positive cover 12 that ca(u)lk portion 24 is in the dish of the state of extension is prepared.In the inner side of the wall of this first positive cover, insulating properties packing ring 22 is set.Now, the bottom surface sections of the first positive cover is not provided with insulating properties packing ring.
Then, conductive metal foil 14, protection component 16, second positive cover 18 is stacked gradually in the inside of the first positive cover.It should be noted that, it is parts that conductive metal foil 14 and protection component 16 also can be bonded in advance.
Finally, the ca(u)lk portion of the first positive cover is bent to the inside, conductive metal foil 14, protection component 16, second positive cover 18 and insulating properties packing ring 22 are carried out ca(u)lk and fixed.
In seal body of the present invention, the first positive cover 12 contacts with conductive metal foil 14, and contact area is large, and this contact portion is pressed by caulking portions, therefore without the need to carrying out the welding of the electrical connection for reliably both realizations.Therefore, seal body of the present invention can easily manufacture.In seal body of the present invention, as long as conductive metal foil has the function as explosion-proof valve, therefore, compared with the explosion-proof valve also playing function as failure of current mechanism in seal body in the past, shape and structure can be simplified.
In addition, in seal body of the present invention, owing to not needing the insulation between the bottom surface sections of the first positive cover and the flange part of conductive metal foil, therefore thickness can be reduced compared with the seal body in the past needing insulating barrier herein.In addition, due to the number of components of the stacked direction of the parts of seal body can be reduced, therefore, it is possible to suppress the deviation of thickness, the load pressure putting on parts can be made more stable.
Seal body of the present invention suitably can should be used as enclosed-type battery, especially cylinder battery, the specifically seal body of cylinder type Li-Ion rechargeable battery.Therefore, the present invention also provides the enclosed-type battery with seal body of the present invention, especially cylinder battery, specifically cylinder type Li-Ion rechargeable battery.
Industrial utilizability
Seal body of the present invention can be used as enclosed-type battery, the enclosed-type battery of such as cylinder type, the specifically seal body of the Li-Ion rechargeable battery of cylinder type.
Description of reference numerals
10 ... seal body
12 ... first positive cover
14 ... conductive metal foil
16 ... protection component
18 ... second positive cover
20 ... the flange part of the second positive cover
22 ... insulating properties packing ring
24 ... ca(u)lk portion
26 ... exhaust outlet
28 ... exhaust outlet
100 ... seal body
102 ... valve gap
104 ... inner packing ring
106 ... explosion-proof valve
108 ... PTC element
110 ... positive terminal
112 ... link position
Claims (11)
1. a seal body, its seal body being enclosed-type battery, the feature of described seal body is to have:
(1) first positive cover, it has ca(u)lk portion and exhaust outlet;
(2) conductive metal foil, it is positioned in the first positive cover;
(3) protection component, it is positioned in conductive metal foil, and has fuse function; And
(4) second positive cover, it is positioned on protection component, and has exhaust outlet,
Described conductive metal foil, described protection component and described second positive cover is fixed by the ca(u)lk portion of described first positive cover.
2. seal body according to claim 1, wherein,
The protection component with fuse function has:
(i) layered component, it is formed by insulative resin, and has at least one pass through openings portion;
(ii) conductive metal thin layer electrode, it is positioned on each first type surface of layered component; And
(iii) fuse layer, its be positioned at specify at least one this pass through openings portion side on, and to be electrically connected with conductive metal thin layer electrode.
3. seal body according to claim 2, wherein,
Omit the conductive metal thin layer electrode of described (2) the conductive metal foil side in described (ii) conductive metal thin layer electrode, the conductive metal thin layer electrode of the opposing party is directly connected by described (iii) fuse layer with conductive metal foil.
4. the seal body according to Claims 2 or 3, wherein,
Fuse layer comprises the different multiple metal levels of fusing point.
5. the seal body according to any one of claim 2 to 4, wherein,
Fuse layer comprises the metal level formed by Ni and the metal level formed by Sn, Sn-Cu alloy or Sn-Bi alloy.
6. seal body according to any one of claim 1 to 5, wherein,
Conductive metal foil is aluminium foil.
7. seal body according to any one of claim 1 to 6, wherein,
Described seal body is cylinder battery seal body.
8. seal body according to any one of claim 1 to 7, wherein,
Described seal body is Li-Ion rechargeable battery seal body.
9. an enclosed-type battery, it has the seal body according to any one of claim 1 to 8.
10. enclosed-type battery according to claim 9, wherein,
Described enclosed-type battery is cylinder battery.
11. enclosed-type batteries according to claim 9 or 10, wherein,
Described enclosed-type battery is Li-Ion rechargeable battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910951827.3A CN110635072A (en) | 2013-02-20 | 2014-02-18 | Sealing body |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-031293 | 2013-02-20 | ||
| JP2013031293 | 2013-02-20 | ||
| PCT/JP2014/053781 WO2014129462A1 (en) | 2013-02-20 | 2014-02-18 | Opening sealing body |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910951827.3A Division CN110635072A (en) | 2013-02-20 | 2014-02-18 | Sealing body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105027318A true CN105027318A (en) | 2015-11-04 |
Family
ID=51391252
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910951827.3A Pending CN110635072A (en) | 2013-02-20 | 2014-02-18 | Sealing body |
| CN201480009506.7A Pending CN105027318A (en) | 2013-02-20 | 2014-02-18 | Opening sealing body |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910951827.3A Pending CN110635072A (en) | 2013-02-20 | 2014-02-18 | Sealing body |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP6209585B2 (en) |
| KR (2) | KR20210000746A (en) |
| CN (2) | CN110635072A (en) |
| TW (1) | TWI620367B (en) |
| WO (1) | WO2014129462A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109496343A (en) * | 2016-08-24 | 2019-03-19 | 迪睿合株式会社 | The manufacturing method of protection element, circuit module and protection element |
| CN111740045A (en) * | 2019-03-07 | 2020-10-02 | 力特电子(日本)有限责任公司 | Sealing body |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5839061B2 (en) * | 2014-02-26 | 2016-01-06 | 株式会社豊田自動織機 | Current interrupt device and power storage device including the same |
| JP2016134317A (en) * | 2015-01-20 | 2016-07-25 | デクセリアルズ株式会社 | Fuse element and circuit module |
| KR102642157B1 (en) * | 2018-04-30 | 2024-03-04 | 삼성에스디아이 주식회사 | Cylindrical lithium ion secondary battery |
| TWI757137B (en) * | 2021-03-31 | 2022-03-01 | 功得電子工業股份有限公司 | Airtight surface mount fuse with insert cavity |
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| JP2001160382A (en) * | 1999-12-02 | 2001-06-12 | Sanyo Electric Co Ltd | Sealed body of battery |
| JP2002042632A (en) * | 2000-07-25 | 2002-02-08 | Matsuo Electric Co Ltd | Micro-fuse and its manufacturing method |
| CN201336324Y (en) * | 2008-11-10 | 2009-10-28 | 中银（宁波）电池有限公司 | Sealing body for column type lithium battery |
| JP2011108625A (en) * | 2009-11-16 | 2011-06-02 | Samsung Sdi Co Ltd | Secondary battery and method for manufacturing the same |
| WO2012118153A1 (en) * | 2011-03-03 | 2012-09-07 | タイコエレクトロニクスジャパン合同会社 | Protective element |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3196607B2 (en) * | 1995-10-31 | 2001-08-06 | 松下電器産業株式会社 | Explosion-proof sealing plate for sealed batteries |
| JP3732945B2 (en) | 1998-03-31 | 2006-01-11 | 三洋電機株式会社 | Sealed battery |
| JP4719961B2 (en) * | 2000-09-01 | 2011-07-06 | パナソニック株式会社 | Secondary battery and manufacturing method thereof |
-
2014
- 2014-02-18 KR KR1020207037310A patent/KR20210000746A/en not_active Application Discontinuation
- 2014-02-18 CN CN201910951827.3A patent/CN110635072A/en active Pending
- 2014-02-18 JP JP2015501460A patent/JP6209585B2/en active Active
- 2014-02-18 CN CN201480009506.7A patent/CN105027318A/en active Pending
- 2014-02-18 WO PCT/JP2014/053781 patent/WO2014129462A1/en active Application Filing
- 2014-02-18 KR KR1020157024942A patent/KR20150119903A/en not_active Application Discontinuation
- 2014-02-19 TW TW103105425A patent/TWI620367B/en active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001160382A (en) * | 1999-12-02 | 2001-06-12 | Sanyo Electric Co Ltd | Sealed body of battery |
| JP2002042632A (en) * | 2000-07-25 | 2002-02-08 | Matsuo Electric Co Ltd | Micro-fuse and its manufacturing method |
| CN201336324Y (en) * | 2008-11-10 | 2009-10-28 | 中银（宁波）电池有限公司 | Sealing body for column type lithium battery |
| JP2011108625A (en) * | 2009-11-16 | 2011-06-02 | Samsung Sdi Co Ltd | Secondary battery and method for manufacturing the same |
| WO2012118153A1 (en) * | 2011-03-03 | 2012-09-07 | タイコエレクトロニクスジャパン合同会社 | Protective element |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109496343A (en) * | 2016-08-24 | 2019-03-19 | 迪睿合株式会社 | The manufacturing method of protection element, circuit module and protection element |
| CN111740045A (en) * | 2019-03-07 | 2020-10-02 | 力特电子(日本)有限责任公司 | Sealing body |
| CN111740045B (en) * | 2019-03-07 | 2024-02-13 | 力特电子(日本)有限责任公司 | Sealing body |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201444148A (en) | 2014-11-16 |
| WO2014129462A1 (en) | 2014-08-28 |
| JPWO2014129462A1 (en) | 2017-02-02 |
| CN110635072A (en) | 2019-12-31 |
| JP6209585B2 (en) | 2017-10-04 |
| KR20210000746A (en) | 2021-01-05 |
| KR20150119903A (en) | 2015-10-26 |
| TWI620367B (en) | 2018-04-01 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20190812 Address after: Tokyo, Japan Applicant after: Lite Electronics Co. Ltd. (Japan) Address before: Kanagawa County, Japan Applicant before: Tyco Electronics Corporation |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151104 |
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