CA2359638A1 - Novel glass to metal seal - Google Patents
Novel glass to metal seal Download PDFInfo
- Publication number
- CA2359638A1 CA2359638A1 CA002359638A CA2359638A CA2359638A1 CA 2359638 A1 CA2359638 A1 CA 2359638A1 CA 002359638 A CA002359638 A CA 002359638A CA 2359638 A CA2359638 A CA 2359638A CA 2359638 A1 CA2359638 A1 CA 2359638A1
- Authority
- CA
- Canada
- Prior art keywords
- sleeve
- casing
- glass
- electrochemical cell
- terminal lead
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 51
- 239000002184 metal Substances 0.000 title claims abstract description 51
- 239000011521 glass Substances 0.000 title claims abstract description 21
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 17
- 239000011733 molybdenum Substances 0.000 claims abstract description 17
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical group [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910001416 lithium ion Inorganic materials 0.000 claims abstract description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 23
- 229910052744 lithium Inorganic materials 0.000 claims description 23
- 229910001220 stainless steel Inorganic materials 0.000 claims description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 14
- 239000010935 stainless steel Substances 0.000 claims description 13
- 238000003466 welding Methods 0.000 claims description 12
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 11
- 239000010936 titanium Substances 0.000 claims description 11
- 229910052719 titanium Inorganic materials 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052799 carbon Inorganic materials 0.000 claims description 8
- 239000004020 conductor Substances 0.000 claims description 8
- 239000003792 electrolyte Substances 0.000 claims description 8
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims description 6
- RAVDHKVWJUPFPT-UHFFFAOYSA-N silver;oxido(dioxo)vanadium Chemical compound [Ag+].[O-][V](=O)=O RAVDHKVWJUPFPT-UHFFFAOYSA-N 0.000 claims description 6
- YALCWJZSJOMTCG-UHFFFAOYSA-N [O--].[O--].[O--].[O--].[V+5].[Cu++].[Ag+] Chemical compound [O--].[O--].[O--].[O--].[V+5].[Cu++].[Ag+] YALCWJZSJOMTCG-UHFFFAOYSA-N 0.000 claims description 4
- 229910052758 niobium Inorganic materials 0.000 claims description 4
- 239000010955 niobium Substances 0.000 claims description 4
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 4
- 229910052715 tantalum Inorganic materials 0.000 claims description 4
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 4
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 3
- 239000005751 Copper oxide Substances 0.000 claims description 3
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 claims description 3
- NFMAZVUSKIJEIH-UHFFFAOYSA-N bis(sulfanylidene)iron Chemical compound S=[Fe]=S NFMAZVUSKIJEIH-UHFFFAOYSA-N 0.000 claims description 3
- 239000006182 cathode active material Substances 0.000 claims description 3
- 229910000431 copper oxide Inorganic materials 0.000 claims description 3
- OMZSGWSJDCOLKM-UHFFFAOYSA-N copper(II) sulfide Chemical compound [S-2].[Cu+2] OMZSGWSJDCOLKM-UHFFFAOYSA-N 0.000 claims description 3
- 229910000339 iron disulfide Inorganic materials 0.000 claims description 3
- QLOAVXSYZAJECW-UHFFFAOYSA-N methane;molecular fluorine Chemical compound C.FF QLOAVXSYZAJECW-UHFFFAOYSA-N 0.000 claims description 3
- CFJRPNFOLVDFMJ-UHFFFAOYSA-N titanium disulfide Chemical compound S=[Ti]=S CFJRPNFOLVDFMJ-UHFFFAOYSA-N 0.000 claims description 3
- 229910001290 LiPF6 Inorganic materials 0.000 claims description 2
- 230000003213 activating effect Effects 0.000 claims 4
- 238000007788 roughening Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 description 18
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 14
- -1 lithium hexafluorophosphate salt Chemical compound 0.000 description 9
- 238000013461 design Methods 0.000 description 7
- 229910052759 nickel Inorganic materials 0.000 description 7
- 239000007787 solid Substances 0.000 description 7
- 229910052783 alkali metal Inorganic materials 0.000 description 6
- 150000001340 alkali metals Chemical class 0.000 description 6
- 239000010406 cathode material Substances 0.000 description 5
- 239000005394 sealing glass Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 239000010439 graphite Substances 0.000 description 4
- 229910002804 graphite Inorganic materials 0.000 description 4
- 239000011244 liquid electrolyte Substances 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 4
- 239000002033 PVDF binder Substances 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 3
- 239000011149 active material Substances 0.000 description 3
- 239000003575 carbonaceous material Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 238000009830 intercalation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 229920002647 polyamide Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000006230 acetylene black Substances 0.000 description 2
- 239000006183 anode active material Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910000510 noble metal Inorganic materials 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229920013683 Celanese Polymers 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910001200 Ferrotitanium Inorganic materials 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229910032387 LiCoO2 Inorganic materials 0.000 description 1
- 229910014549 LiMn204 Inorganic materials 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910001413 alkali metal ion Inorganic materials 0.000 description 1
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- ZXTFQUMXDQLMBY-UHFFFAOYSA-N alumane;molybdenum Chemical compound [AlH3].[Mo] ZXTFQUMXDQLMBY-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 239000002482 conductive additive Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229910021397 glassy carbon Inorganic materials 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910001540 lithium hexafluoroarsenate(V) Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910052976 metal sulfide Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 150000004771 selenides Chemical class 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 150000004763 sulfides Chemical class 0.000 description 1
- 150000004772 tellurides Chemical class 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- 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
- H01M50/176—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for prismatic or rectangular 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
- H01M50/183—Sealing members
- H01M50/186—Sealing members characterised by the disposition of the sealing members
-
- 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
- H01M50/19—Sealing members characterised by the material
- H01M50/191—Inorganic 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
- H01M50/50—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
-
- 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
- H01M50/562—Terminals 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/564—Terminals characterised by their manufacturing process
- H01M50/566—Terminals characterised by their manufacturing process by welding, soldering or brazing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/372—Arrangements in connection with the implantation of stimulators
- A61N1/378—Electrical supply
-
- 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
- H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/14—Cells with non-aqueous electrolyte
- H01M6/16—Cells with non-aqueous electrolyte with organic electrolyte
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49108—Electric battery cell making
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49108—Electric battery cell making
- Y10T29/4911—Electric battery cell making including sealing
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Secondary Cells (AREA)
- Primary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Cell Electrode Carriers And Collectors (AREA)
Abstract
It has been discovered that the connection between a current collector and a molybdenum terminal pin can be improved by roughening the terminal pin. However, a roughened terminal pin detracts from the integrity of the glass-to-metal seal. To overcome this, a sleeve or couple surrounds that portion of the roughened terminal pin that will be sealed to the insulating glass. The sleeve or couple is welded at each end to the terminal pin, and a glass-to-metal seal is formed between the sleeved terminal pin, the insulating glass, and the metallic lid. The resulting assembly contains a portion of the terminal pin that has a roughened surface and is suitable for making a high strength connection to a current collector of a primary or secondary lithium ion battery, and to a sleeved portion which has a relatively smooth surface that provides a high strength for a glass-to-metal seal.
Description
NOVEL GLASS TO METAL SEAL
Backcrround of the Invention 1. Field of the Invention The invention pertains to a glass-to-metal seal which is suitable fo.r hermetically sealing an electrochemical cell. The glass-to-metal seal includes a terminal pin which is roughened to enhance its high strength connection to a current collector. The problem is that while a roughened terminal pin improves the current collector connection, it detracts from the hermetic seal with the glass of the glass-to-metal seal.
According to the present invention., this is overcome by passing the terminal pin through a. sleeve, and the two are hermetically sealed together. The sleeve then provides the seal for the glass-to-metal seal. Cells having the sleeved/roughened terminal pin assembly are adaptable for powering a number of devices including medical applications such .as a pacemaker, cardioventer defibrillator, drug pump, hearing assist device or neurostimulator.
Backcrround of the Invention 1. Field of the Invention The invention pertains to a glass-to-metal seal which is suitable fo.r hermetically sealing an electrochemical cell. The glass-to-metal seal includes a terminal pin which is roughened to enhance its high strength connection to a current collector. The problem is that while a roughened terminal pin improves the current collector connection, it detracts from the hermetic seal with the glass of the glass-to-metal seal.
According to the present invention., this is overcome by passing the terminal pin through a. sleeve, and the two are hermetically sealed together. The sleeve then provides the seal for the glass-to-metal seal. Cells having the sleeved/roughened terminal pin assembly are adaptable for powering a number of devices including medical applications such .as a pacemaker, cardioventer defibrillator, drug pump, hearing assist device or neurostimulator.
2. Prior Art The recent rapid development in small-sized electronic devices having various shape and size requirements necessitates comparably small-sized electrochemical cells of different: designs that can be easily manufactured and used in these devices.
Preferably, the electrochemical cell has a high energy density and one commonly used cell configuration is a prismatic, case-negative cell design having an intermediate cathode flanked by, and in electrical association with, opposed anode plates in contact with the casing. In conjunction with smaller size batteries, enhanced characteristics such as a novel glass-to-metal seal which is suitable for hermetically sealing an electrochemical cell as well as providing a high strength connection to a current collector, will increase the applicability of these cells to an increasing number of situations. A.s will be seen shortly, the prior art does not teach the use of a metal sleeve to be used in conjunction with a roughened terminal pin.
For example, the prior art in U.S. Patent 5,727,313 to Paterek et al. shows a method of: manufacturing vessel lid covers including conductive pin assemblies for vessel container housings. The conductive pin and vessel lid cover are plated to reduce corrosion.
However, the plating is removed from the aperture receiving the pin. The assembled :Lid cover is then heated to fuse the fusible insulat:ive material to the peripheral wall of the pin and the inner face of the aperture wall where the plating has been substantially removed so as to enhance the fusing step. This invention does not teach the use of a sleeve in conjunction with the conductive pin as stated in the current invention. In contrast, t:he invention teaches a cumbersome construction which is expensive and difficult to manufacture.
U.S. Patent 6,076,017 to Taylor et al. relates to a method for forming a glass-metal hermetic seal between a metal pin and a sealing glass wherein the pin may be of molybdenum, tantalum, niobium or similar metals. The surface of the pin is subjected to a centerless grinding process for removing defects and anomalies before being circumferentially and sealingly engaged with the sealing glass. A similar method is utilized in U.S. Patent 5,871,513, also to Taylor et al. This invention teaches the smoothing of a larger pin in contrast to the current invention which teaches roughening of the pin surface connected to an electrode current collector.
Also, U.S. Patent 5,709,724 to Naugler et al. shows a process for fabricating a hermetic glass-to-metal seal between a conductive pin, a glass, and an outer body.
The process generally includes the steps of providing a conductive pin having a layer of noble metal coated on at least a portion of its outer surface, placing glass having a softening point of less than about 650°C within the cavity of an outer body, inserting the coated pin into the glass, heating the components to a temperature at least equal to the softening point of the glass and less than about 700°C, and cooling the components to solidify the glass and form a glass-to-metal seal. This invention teaches the use of a noble metal such as gold or platinum in contrast to the current invention which uses a titanium, stainless steel, or molybdenum pin.
This patent also does not teach the use of a sleeve provided on the pin intermediate. the sealing glass.
Finally, U.S. Patent 5,658,688 to Jolson teaches a battery having an austenitic stainless steel case and a cover blank. The cover blank is provided with a small hole allowing a glass-to-metal seal to be fused to the cover blank. A metal feedthrough pin is provided and is surrounded and held in place by an insulator preferably made of Fusite 435 glass. Rather than using TA-23 or CABAL glasses which require the use of a molybdenum pin, this glass is specifically.selected for its ability to fuse to a 446 stainless steel pin, thereby avoiding the difficulties associated with welding molybdenum pins.
The Jolson invention differs from the. current invention in its use of a stainless steel conductor pin devoid of a metal sleeve sealed to the insulating glass.
Thus, it can be seen, based on a reading of the prior art, there is a need to develop a glass-to-metal seal suitable for providing a high strength terminal connection to a current collector as well as providing a hermetic seal for an electrochemical cell. This invention will extend the applicability of the current electrochemical cells to new varieties of applications.
This design is less cumbersome and more adaptable than others heretofore presented.
Summary of the Invention Roughening the terminal pin helps bolster the connection with the current collector. However, this same roughening detracts from the integrity of the glass-to-metal seal. According to the present.
invention, it has been discovered that the glass-to-metal seal of electrochemical cells containing a current collector and a roughened terminal pin, such as of titanium, stainless steel, or molybdenum, can be improved by positioning a sleeve or couple over that portion of the terminal pin that will be sealed to the insulating glass. The present construction includes hermetically welding the sleeve or couple at each end of the terminal pin, and forming a glass-to-metal seal incorporating the modified terminal pin, the insulating glass, and the metallic lid. The resulting assembly contains a portion of the terminal pin that has a roughened surface and is suitable for making a high strength connection to a current collector and another portion which has a relatively smooth surface which provides high strength for a glass-to-metal seal.
The foregoing and additional advantages and characterizing features of the present invention will become clearly apparent upon reading the ensuing description together with the included drawings wherein:
Brief Description of the Drawings Fig. 1 is a perspective view of an electrochemical cell containing the new glass-to-metal seal.
Fig. 2 shows a perspective view with parts broken away of the standard glass-to-metal. seal showing the cathode connector attached to the germinal lead.
Fig. 3A is a detailed view of a prior art glass-to-metal seal.
Fig. 3B is a detailed view of a glass-to-metal seal according to the present invention showing a sleeve surrounding the terminal pin and with the sealing glass contacting the sleeve.
Fig. 4 is a detailed view showing the terminal pin connected to the sleeve by welding.
Fig. 5 is a sectional view along line 5-5 in Fig.
1, depicting the internals of an electrochemical cell.
Preferably, the electrochemical cell has a high energy density and one commonly used cell configuration is a prismatic, case-negative cell design having an intermediate cathode flanked by, and in electrical association with, opposed anode plates in contact with the casing. In conjunction with smaller size batteries, enhanced characteristics such as a novel glass-to-metal seal which is suitable for hermetically sealing an electrochemical cell as well as providing a high strength connection to a current collector, will increase the applicability of these cells to an increasing number of situations. A.s will be seen shortly, the prior art does not teach the use of a metal sleeve to be used in conjunction with a roughened terminal pin.
For example, the prior art in U.S. Patent 5,727,313 to Paterek et al. shows a method of: manufacturing vessel lid covers including conductive pin assemblies for vessel container housings. The conductive pin and vessel lid cover are plated to reduce corrosion.
However, the plating is removed from the aperture receiving the pin. The assembled :Lid cover is then heated to fuse the fusible insulat:ive material to the peripheral wall of the pin and the inner face of the aperture wall where the plating has been substantially removed so as to enhance the fusing step. This invention does not teach the use of a sleeve in conjunction with the conductive pin as stated in the current invention. In contrast, t:he invention teaches a cumbersome construction which is expensive and difficult to manufacture.
U.S. Patent 6,076,017 to Taylor et al. relates to a method for forming a glass-metal hermetic seal between a metal pin and a sealing glass wherein the pin may be of molybdenum, tantalum, niobium or similar metals. The surface of the pin is subjected to a centerless grinding process for removing defects and anomalies before being circumferentially and sealingly engaged with the sealing glass. A similar method is utilized in U.S. Patent 5,871,513, also to Taylor et al. This invention teaches the smoothing of a larger pin in contrast to the current invention which teaches roughening of the pin surface connected to an electrode current collector.
Also, U.S. Patent 5,709,724 to Naugler et al. shows a process for fabricating a hermetic glass-to-metal seal between a conductive pin, a glass, and an outer body.
The process generally includes the steps of providing a conductive pin having a layer of noble metal coated on at least a portion of its outer surface, placing glass having a softening point of less than about 650°C within the cavity of an outer body, inserting the coated pin into the glass, heating the components to a temperature at least equal to the softening point of the glass and less than about 700°C, and cooling the components to solidify the glass and form a glass-to-metal seal. This invention teaches the use of a noble metal such as gold or platinum in contrast to the current invention which uses a titanium, stainless steel, or molybdenum pin.
This patent also does not teach the use of a sleeve provided on the pin intermediate. the sealing glass.
Finally, U.S. Patent 5,658,688 to Jolson teaches a battery having an austenitic stainless steel case and a cover blank. The cover blank is provided with a small hole allowing a glass-to-metal seal to be fused to the cover blank. A metal feedthrough pin is provided and is surrounded and held in place by an insulator preferably made of Fusite 435 glass. Rather than using TA-23 or CABAL glasses which require the use of a molybdenum pin, this glass is specifically.selected for its ability to fuse to a 446 stainless steel pin, thereby avoiding the difficulties associated with welding molybdenum pins.
The Jolson invention differs from the. current invention in its use of a stainless steel conductor pin devoid of a metal sleeve sealed to the insulating glass.
Thus, it can be seen, based on a reading of the prior art, there is a need to develop a glass-to-metal seal suitable for providing a high strength terminal connection to a current collector as well as providing a hermetic seal for an electrochemical cell. This invention will extend the applicability of the current electrochemical cells to new varieties of applications.
This design is less cumbersome and more adaptable than others heretofore presented.
Summary of the Invention Roughening the terminal pin helps bolster the connection with the current collector. However, this same roughening detracts from the integrity of the glass-to-metal seal. According to the present.
invention, it has been discovered that the glass-to-metal seal of electrochemical cells containing a current collector and a roughened terminal pin, such as of titanium, stainless steel, or molybdenum, can be improved by positioning a sleeve or couple over that portion of the terminal pin that will be sealed to the insulating glass. The present construction includes hermetically welding the sleeve or couple at each end of the terminal pin, and forming a glass-to-metal seal incorporating the modified terminal pin, the insulating glass, and the metallic lid. The resulting assembly contains a portion of the terminal pin that has a roughened surface and is suitable for making a high strength connection to a current collector and another portion which has a relatively smooth surface which provides high strength for a glass-to-metal seal.
The foregoing and additional advantages and characterizing features of the present invention will become clearly apparent upon reading the ensuing description together with the included drawings wherein:
Brief Description of the Drawings Fig. 1 is a perspective view of an electrochemical cell containing the new glass-to-metal seal.
Fig. 2 shows a perspective view with parts broken away of the standard glass-to-metal. seal showing the cathode connector attached to the germinal lead.
Fig. 3A is a detailed view of a prior art glass-to-metal seal.
Fig. 3B is a detailed view of a glass-to-metal seal according to the present invention showing a sleeve surrounding the terminal pin and with the sealing glass contacting the sleeve.
Fig. 4 is a detailed view showing the terminal pin connected to the sleeve by welding.
Fig. 5 is a sectional view along line 5-5 in Fig.
1, depicting the internals of an electrochemical cell.
Fig. 6 shows a jellyroll electrode configuration using a glass-to-metal seal with sleeve according to the present invention.
Best Mode For Carrying Out the Invention Referring now to Figs. 1 through 5, electrochemical cell 10 is similar to the prismatic: electrochemical cell as described in U.S. Patent No. 5,50,373 to Muffoletto et al. This patent is assigned to the assignee of the current invention and the disclosure of which is incorporated herein by reference.
In an embodiment of the current invention, the art has known that it has been difficult to weld an aluminum current collector to a high ferrit:ic stainless steel or molybdenum terminal pin. Aluminum is stable as a current collector material when it is used in conjunction with a lithium hexafluorophosphate salt.
Indeed, it is known that lithium/silver vanadium oxide batteries containing an aluminum current collector and a lithium hexafluro- phosphate salt have increased power density in comparison to state-of-the-art batteries.
This technology heretofore has not been used because of the molybdenum-aluminum welding problem.
However, according to the present invention, roughening the surface on a portion of the terminal pin followed by crimping and laser welding of the pin to the aluminum current collector results in greater mechanical strength. This new terminal pin construction is adaptable for cells having a wide variety of electrode configurations including prismatic, jellyroll, serpentine, button shape, and the like. For illustration purposes, the present invention will first be described with respect to a pri:~matic cell, as shown in Figs. 1 to 5, and then a jellyroll cell, as shown in Fig. 6. This is by way of illustration only, and those skilled in the art will readily understand other cell .
configurations useful with the present invention.
The prismatic cell includes a casing 12 of two parts, a first part or body 14 and a second part or lid 16. In particular, the body 14 is generally rectangular in shape, consisting of spaced apart side walls 24 and 26 extending to and meeting with a first end wall 28 at rounded corners, further extending to and meeting with a second end wall 30 at rounded corners. The side walls 24 and 26, and end walls 28 and 30 extend to a continuous upper edge 32 defining .an opening 18 of the body 14 opposite to the lower end. Side walls 24 and 26 further extending down and meet, forming a smooth arcuate surface 34. End walls 28 and 30 further extend downward and meet arcuate surface 34 with rounded ends 36 and 38. Rounded ends 36 and 38 are perpendicular to arcuate surface 34.
The lid 16 is a one piece member having spaced apart side walls 40 and 42 extending to and meeting with first end wall 44 at rounded corners, further extending to and meeting with a second end wall 46 with rounded corners. Side walls 40 and 42 and end walls 44 and 46 extend to and meet with upper.surface 48, and further extend to and meet with lower surface 50. The lid 16 is sized just to fit within the upper opening l8 in the case body 14. The lid 16 is provided with an opening 52, used for a hermetically sealed. battery terminal feedthrough 54, containing a terminal lead 22 with a glass-to-metal seal 56. The terminal lead will be described in detail later.
The lid 16 is received in a close proximate relationship inside the opening 18 of the body l4 and welded to provide a hermetic enclosure for an electrode assembly 20. The preferred methods of sealing the casing are welding and brazing. Casing 12 is of a conductive material preferably selected from the group consisting of nickel, aluminum, stainless steel, mild steel and titanium. An external cell.electrical connection is provided by the terminal lead 22 and by a contact region comprising the lid 1.6 or entire conductive casing 12, which is insulated from the terminal lead 22, to prevent shorting.
The feedthrough assembly 54 including a ferrule 64 and the glass-to-metal seal 56, is shown in Figs. 2 and 3A. In this embodiment, the conventional seal, which has been used in many current applications, employs a high ferritic stainless steel or molybdenum terminal pin 22. In general, as previously staged, the pin is very difficult to weld to a current collector 60 (Fig. 2).
However, the high ferritic stainle:>s steel or molybdenum pin is highly thought of for its corrosion resistance capability. Thus; to enhance the use of the high ferritic stainless steel or molybdenum pin, a new terminal feedthrough 62, as shown in Fig. 3B, has been developed. The feedthrough consists of a ferrule 64 nested in an aperture 66 and attached to the lid 16 of the battery case. A generally cylindrical sleeve 68 of constant radius is disposed within the ferrule 64, parallel to the wall 65 of the feri:ule 64, and perpendicular to the top surface 48 of lid 16. Sleeve g _ 68 is sealed in the ferrule 64 by fusing the glass 69 between the sleeve 68 and the ferrule 64. The smooth outer surface 72 of the sleeve enhances the strength of the glass to metal bond. The high ferritic stainless steel or molybdenum pin 22 is abraded creating a rough surface, inserted through the sleeve and welded therein (Fig. 4). Sleeve 68 is welded to terminal pin 22 by using a laser beam 97 from welding source 99.
Preferably, the sleeve 68 is welded about its entire peripheral extent to the pin 22 at both its upper and lower ends 22A and 22B. This creates a hermetical seal between the pin 22 and sleeve 68.
Sleeve 68 may or may not be of the same material as the terminal pin 22, however this is not a requirement as long as the two metals selected are capable of being welded together and. are resistant i~o corrosion.
Appropriate materials for the terminal pin include molybdenum, stainless~steel, high ferri.tic stainless steel, titanium, niobium, and tantalum.
As shown in Figs. 2 and 5, the cell 10 further includes anode and cathode electrodes. The cathode 74 includes current collector 76. Current collector 76 generally comprises a grid 78, connected to a connection tab 80. A terminal lead 22 is directly contacted to the connection tab 80 preferably by -welding, to provide for direct electrical connection to. the cathode electrode.
The current collector 76 is readily incorporated into alkali metal/solid cathode or alkali metal/oxyhalide electrochemical cells of both solid cathode and liquid electrolyte types without having to be changed or otherwise modified itself. In the solid cathode type, for example a lithium-solid cathode cell, a solid.
cathode material such as manganese dioxide, silver vanadium oxide, copper silver vanadium oxide, titanium disulfide, copper oxide, copper sulfide, iron sulfide, iron disulfide, carbon or fluorinated carbon (CFx' is contained within casing 12 and surrounded by a separator: A preferred lithium anode 82 also is in the casing.
In the liquid cathode/electrol.yte or catholyte type cell, for example a lithium-oxyhalide cell, liquid catholyte fills the casing interioz: and is in operative contact with the anode and with.the cathode element comprising the cathode current collector 76 sandwiched between opposed carbonaceous plates. A separator is disposed between the anode and the carbonaceous cathode.
For a more detailed description of such a liquid electrolyte cell references may be made to U.S. Patent No. 4,246,327 to Skarstad et al.
The current invention may also be used in a secondary lithium cell. The secondary electrochemical cell which can be used with the present invention includes an anode active material selected from Groups IA, IIA, or IIIB of the Periodic Table of Elements, including the alkali metals lithium, sodium, potassium, etc.
In secondary electrochemical systems, the anode electrode comprises a material capable of intercalating and de-intercalating the alkali metal, and preferably lithium. A carbonaceous anode comprising any of the various forms of carbon (e. g., coke, graphite, acetylene black, carbon black, glassy carbon, etc.) which are capable of reversibly retaining the lithium species, is preferred. Graphite is particularly preferred due to its relatively high lithium-retention capacity.
Regardless of the form of the carbon, fibers of the carbonaceous material are particularly advantageous because the fibers have excellent mechanical properties which permit them to be fabricated into rigid electrodes that are capable of withstanding degradation during repeated charge/discharge cycling. Moreover, the high surface area of carbon fibers allows for rapid charge/discharge rates. A preferred carbonaceous material for the anode of a second<~ry electrochemical cell is described in U.S. Patent No. 5,443,928 to Takeuchi et al., which is assigned to the assignee of the present invention and incorporated herein by reference.
A typical secondary cell anode is fabricated by mixing about 90 to 97 weight percent graphite with about 3 to 10 weight percent of a binder material which is preferably a fluro-resin powder such as polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF), polyethylenetetrafluoroethylene (ETFE), polyamides and polyamides, and mixtures thereof. This electrode active admixture is provided on a current collector such as of a nickel, stainless steel, or copper foil or screen by casting, pressing, rolling or otherwise contacting the active admixture thereto.
The anode component further has an extended tab or lead of the same material as the anode current collector, i.e., preferably nickel, integrally formed therewith such as by welding and contacted by a weld to a cell case of conductive metal in: a case-negative electrical configuration. Alternatively, the carbonaceous anode may be formed in some other geometry, such as a bobbin shape, cylinder or pellet to allow an alternate low surface cell design.
The cathode of a secondary cell preferably comprises a lithiated material that is stable in air and readily handled. Examples of such air-stable lithiated cathode materials include oxides, sulfides, selenides, and tellurides of such metals as vanadium, titanium, chromium, copper, molybdenum, niobium, iron, nickel, cobalt and manganese. The more preferred oxides include LiNi02, LiMn204, LiCo02.9zSno,o802, LiCol_xNiX02 and LiCo02.
Before fabrication into an electrode for incorporation into an electrochemical cell, the lithiated active material is preferably mixed with a conducted additive. Suitable conductive additives include acetylene black, carbon black and/or graphite.
Metals such as nickel, aluminum, titanium and stainless steel in powder form are also useful as conductive dilutants when mixed with the above listed active materials. The electrode further comprises a fluoro-resin binder, preferably in a powder form, such as PTFE, PVDF, ETFE, polyamides and polyimides, and mixtures thereof.
To recharge such secondary cells, the.lithium ion comprising the cathode is intercalated into the carbonaceous anode by applying an externally generated electrical potential to recharge t:he cell. The applied recharging electrical potential serves to draw the alkali metal ions from the cathode material, through the electrolyte and into the carbonaceous anode to saturate the carbon comprising the anode. The resulting LiXCs electrode can have an x ranging between O.l and 1Ø
The cell is then provided with an electrical potential and is discharged in a normal manner.
An alternate secondary cell construction comprises intercalating the carbonaceous material with the active alkali material before the anode is incorporated into the cell. In this case, the cathode body can be solid and comprise, but not be limited to, such materials as manganese dioxide, silver vanadium oxide, copper silver vanadium oxide, titanium disulfide,, copper oxide, copper sulfide, iron sulfide, iron disulfide, carbon and fluorinated carbon. However, this approach is compromised by the problems associ<~ted with handling lithiated carbon outside of the cell. Lithiated carbon tends to react when contacted by a:ir.
The secondary cell used in the present invention includes a separator to provide physical segregation between the anode and cathode active electrodes. The separator is of an electrically insulative material to prevent an internal electrical short circuit between the electrodes, and the separator material also is chemically unreactive with the anode and cathode active materials and both chemically unreactive with and insoluble in the electrolyte. In addition, the separator material has a degree of porosity sufficient to allow flow therethrough of the electrolyte during the electrochemical reaction of .the cell. The form of the separator typically is a sheet which is placed between the anode and cathode electrodes. Such is the case when the anode is folded in a serpentine-like structure (not shown) with a plurality of cathode: plates disposed intermediate the anode folds and received in a cell casing or when the electrode combination is rolled or otherwise formed into a cylindrical "jellyroll"
configuration, as shown per Fig. 6.
Illustrative separator materials include fabrics woven from fluoropolymeric fibers of polyethylenetetrafluoroethylene and.
polyethylenechlorotrifluoroethylene used either alone or laminated with a fluoropolymeric microporous film.
Other suitable separator materials include non-woven glass, polypropyene, polyethylene, glass fiber materials, ceramics, a polytetraflouroethylene membrane commercially available under the designation ZITEX
(Chemplast Inc.), a polypropylene membrane commercially available under the designation CELGARD (Celanese Plastic Company, Inc.) and a membrane commercially available under the designation DESIGLAS (C. H. Dexter, Div., Dexter Corp.).
Referring now to Fig. 5, the primary cell 10, according to a second embodiment of the present invention, is of the liquid electrolyte type comprising a cathode electrode 74 having a body 75 of solid cathode material in the form of plates 77, 79 pressed together and .bonded against the cathode current collector 76.
The cathode active material is prei:erably comprised of a metal, a metal oxide, a mixed meta7L oxide or a metal sulfide, and the cathode current collector 76 is fabricated from a thin sheet of metal selected from the group consisting of nickel, aluminum, stainless steel, mild steel and titanium, with titanium being preferred.
As further shown in Fig. 5, cell 10 includes an alkali metal anode electrode, generally designated 81, comprising a unitary, conductive member which serves as the anode current collector and is fabricated from a thin sheet of metal, preferably nickel, having a pair of wing-like sections 83 and 84 joined by an intermediate web section 85. The preferred alkali metal for the anode is lithium. Lithium anode elements 86 and 87 are in pressure bonded contact with and carried by corresponding ones of the electrode wing sections 83 and 84, respectively. The wing-like sections 83 and 84 are of mesh formation to facilitate adherence to the lithium anode elements 86, 87. The lithium anode elements 86 and 8.7 are of similar shape or configuration as the corresponding electrode wing sections 83 and 84, respectively, but of a slightly larger size or surface area so as to define a marginal or peripheral extension or border surrounding the perimeter of each wing section. Thus, the length and width of each of the lithium anode elements 86 and 87 is slightly greater than the length and width of the corresponding electrode wing section 83 and 84 with the anode elements terminating at an edge 88 a short distance from electrode web section 85.
To construct an anode-cathode: subassembly according to the present invention, the electrode wing sections 83, 84 with the associated anode lithium elements 86, 87 are folded relative to web section 85 and toward each other and in a manner to place the lithium anode elements 86, 87 in operative contact with the oppositely directed surfaces 89 and 90 of the cathode body 75. In particular, lithium anode element 86 is in operative contact with the cathode body surface 89 through a thin sheet of separator material 91. Similarly, lithium anode element 87 is in operative contact with cathode body surface 90 through a thin sheet of separator material 93 such that separator sheets 91 and 93 surround and envelope the cathode body 75 to prevent direct physical contact with the anode plates 86, 87.
Shielding and insulating sheets (not shown) are also provided between the web section 85 of the anode current collector and the cathode electrode: 74. The terminal lead 22 connected to the current collector 60 of the cathode electrode 74 extends through a header assembly comprising the glass-to-metal seal 70 fitted in the lid 16 (Figs. 3B and 5).
Cell 10 is completed by a liquid electrolyte 95 provided in casing 12 and sealed therein by the provision of a closure means to hermetically close the cell 10. Lead 22 is the positive eslectrical terminal, being connected to the cathode body 75. With anode electrode 82 being in operative contact with the conducting casing 12 through the web section 85 of the anode current collector in electrical contact therewith, the cell 10 of this embodiment of 'the present invention is in a case-negative electrical configuration.
By way of example, in an illustrative cell, the active material of cathode body 75 is a silver vanadium oxide cathode material as described in U.S: Patent Nos.
4,310,609 and 4,391,729 to Ziang et al., or copper silver vanadium oxide as described in U.S. Patent Nos.
5,472,810 and 5,516,340 to Takeuchi et al., all assigned to the assignee of the present invention, the disclosures of which are hereby incorporated by reference. Cathode current collector 76 is of titanium and terminal lead 22 is of molybdenum, separators 91, 93 are of polypropylene, electrolyte 95 is a 1. OM to 1.4M
solution of LiAsF6 or LiPF6 in a 50:50 mixture of, by volume, 1,2-dimethoxyethane and propylene carbonate, glass seal 70 is of TA-23 Hermetic sealing glass, and the metal plug of the closure means is of stainless steel.
The current collector 76 of the present invention can also be employed in a cell having a case-positive electrical configuration. In particular, in the embodiments of Figs. 2 and 5, with the lithium anode elements 86, 87 contacting the conductive cell casing 12, the cell 10 is~in a case-negative electrical configuration. A case-positive electrical configuration is provided by placing the cathode parts in contact with the conductive cell casing 12. In particular, and referring to the anode-cathode subassembly of Fig. 5, a case-positive electrical configuration is provided by replacing lithium anode elements 8E;, 87 with cathode plates 77, 78 on the electrode wing sections 83, 84.
Accordingly, cathode body 75 would be replaced by a pair of lithium anode elements 86, 87 sandwiched together and against the current collector 76 of the present invention serving as an anode current collector which, in turn, is connected to the terminal lead 22 via electrical contact with the collector 76, and insulated from lid 16 by the glass-to-metal seal 70: With the cathode parts in contact with elecitrode wing sections 83, 84 and with the electrode Web section 85 in contact with the cell casing 12, a cell is provided in a case-positive electrical configuration. In all other respects, the anode current collector in the case-positive configuration is similar to that previously described with respect to cell 10 having the case-negative configuration.
In the current invention, the novel glass-to-metal seal 70 has been discussed in conjunction with a prismatic casing 12. However, as previously described, this is for illustrative purposes only. As those who are skilled in the art can appreciate, the novel glass-to-metal seal is useful with any casing design which allows access to the external or internal surface of the terminal lead, depending on the de~~ired design. Tl~e available designs include clam shell, prismatic, cylindrical, or button shapes. It may also be used with a number of different types of batteries including primary lithium batteries, implantable batteries, lithium based rechargeable cells and also acid or alkaline based batteries.
For example, Fig. 6 shows anol=her embodiment of the present invention having a.jellyroll electrode assembly 100. One of the anode electrodes <~nd the cathodes electrode of the jellyroll assembly contains a current collector 60 attached to terminal pin 22 extending above the lid 102 for the casing 101. The terminal pin 22 extends through the sleeve 68 sealed in an opening in the lid by the glass-to-metal seal 70. The battery further contains a fill opening 10:1 sealed by plug 103.
Now, it is therefore apparent that the present invention accomplishes its intended objects. While embodiments of the present invention have been described in detail, which is for the purpose of illustration, not limitation.
Best Mode For Carrying Out the Invention Referring now to Figs. 1 through 5, electrochemical cell 10 is similar to the prismatic: electrochemical cell as described in U.S. Patent No. 5,50,373 to Muffoletto et al. This patent is assigned to the assignee of the current invention and the disclosure of which is incorporated herein by reference.
In an embodiment of the current invention, the art has known that it has been difficult to weld an aluminum current collector to a high ferrit:ic stainless steel or molybdenum terminal pin. Aluminum is stable as a current collector material when it is used in conjunction with a lithium hexafluorophosphate salt.
Indeed, it is known that lithium/silver vanadium oxide batteries containing an aluminum current collector and a lithium hexafluro- phosphate salt have increased power density in comparison to state-of-the-art batteries.
This technology heretofore has not been used because of the molybdenum-aluminum welding problem.
However, according to the present invention, roughening the surface on a portion of the terminal pin followed by crimping and laser welding of the pin to the aluminum current collector results in greater mechanical strength. This new terminal pin construction is adaptable for cells having a wide variety of electrode configurations including prismatic, jellyroll, serpentine, button shape, and the like. For illustration purposes, the present invention will first be described with respect to a pri:~matic cell, as shown in Figs. 1 to 5, and then a jellyroll cell, as shown in Fig. 6. This is by way of illustration only, and those skilled in the art will readily understand other cell .
configurations useful with the present invention.
The prismatic cell includes a casing 12 of two parts, a first part or body 14 and a second part or lid 16. In particular, the body 14 is generally rectangular in shape, consisting of spaced apart side walls 24 and 26 extending to and meeting with a first end wall 28 at rounded corners, further extending to and meeting with a second end wall 30 at rounded corners. The side walls 24 and 26, and end walls 28 and 30 extend to a continuous upper edge 32 defining .an opening 18 of the body 14 opposite to the lower end. Side walls 24 and 26 further extending down and meet, forming a smooth arcuate surface 34. End walls 28 and 30 further extend downward and meet arcuate surface 34 with rounded ends 36 and 38. Rounded ends 36 and 38 are perpendicular to arcuate surface 34.
The lid 16 is a one piece member having spaced apart side walls 40 and 42 extending to and meeting with first end wall 44 at rounded corners, further extending to and meeting with a second end wall 46 with rounded corners. Side walls 40 and 42 and end walls 44 and 46 extend to and meet with upper.surface 48, and further extend to and meet with lower surface 50. The lid 16 is sized just to fit within the upper opening l8 in the case body 14. The lid 16 is provided with an opening 52, used for a hermetically sealed. battery terminal feedthrough 54, containing a terminal lead 22 with a glass-to-metal seal 56. The terminal lead will be described in detail later.
The lid 16 is received in a close proximate relationship inside the opening 18 of the body l4 and welded to provide a hermetic enclosure for an electrode assembly 20. The preferred methods of sealing the casing are welding and brazing. Casing 12 is of a conductive material preferably selected from the group consisting of nickel, aluminum, stainless steel, mild steel and titanium. An external cell.electrical connection is provided by the terminal lead 22 and by a contact region comprising the lid 1.6 or entire conductive casing 12, which is insulated from the terminal lead 22, to prevent shorting.
The feedthrough assembly 54 including a ferrule 64 and the glass-to-metal seal 56, is shown in Figs. 2 and 3A. In this embodiment, the conventional seal, which has been used in many current applications, employs a high ferritic stainless steel or molybdenum terminal pin 22. In general, as previously staged, the pin is very difficult to weld to a current collector 60 (Fig. 2).
However, the high ferritic stainle:>s steel or molybdenum pin is highly thought of for its corrosion resistance capability. Thus; to enhance the use of the high ferritic stainless steel or molybdenum pin, a new terminal feedthrough 62, as shown in Fig. 3B, has been developed. The feedthrough consists of a ferrule 64 nested in an aperture 66 and attached to the lid 16 of the battery case. A generally cylindrical sleeve 68 of constant radius is disposed within the ferrule 64, parallel to the wall 65 of the feri:ule 64, and perpendicular to the top surface 48 of lid 16. Sleeve g _ 68 is sealed in the ferrule 64 by fusing the glass 69 between the sleeve 68 and the ferrule 64. The smooth outer surface 72 of the sleeve enhances the strength of the glass to metal bond. The high ferritic stainless steel or molybdenum pin 22 is abraded creating a rough surface, inserted through the sleeve and welded therein (Fig. 4). Sleeve 68 is welded to terminal pin 22 by using a laser beam 97 from welding source 99.
Preferably, the sleeve 68 is welded about its entire peripheral extent to the pin 22 at both its upper and lower ends 22A and 22B. This creates a hermetical seal between the pin 22 and sleeve 68.
Sleeve 68 may or may not be of the same material as the terminal pin 22, however this is not a requirement as long as the two metals selected are capable of being welded together and. are resistant i~o corrosion.
Appropriate materials for the terminal pin include molybdenum, stainless~steel, high ferri.tic stainless steel, titanium, niobium, and tantalum.
As shown in Figs. 2 and 5, the cell 10 further includes anode and cathode electrodes. The cathode 74 includes current collector 76. Current collector 76 generally comprises a grid 78, connected to a connection tab 80. A terminal lead 22 is directly contacted to the connection tab 80 preferably by -welding, to provide for direct electrical connection to. the cathode electrode.
The current collector 76 is readily incorporated into alkali metal/solid cathode or alkali metal/oxyhalide electrochemical cells of both solid cathode and liquid electrolyte types without having to be changed or otherwise modified itself. In the solid cathode type, for example a lithium-solid cathode cell, a solid.
cathode material such as manganese dioxide, silver vanadium oxide, copper silver vanadium oxide, titanium disulfide, copper oxide, copper sulfide, iron sulfide, iron disulfide, carbon or fluorinated carbon (CFx' is contained within casing 12 and surrounded by a separator: A preferred lithium anode 82 also is in the casing.
In the liquid cathode/electrol.yte or catholyte type cell, for example a lithium-oxyhalide cell, liquid catholyte fills the casing interioz: and is in operative contact with the anode and with.the cathode element comprising the cathode current collector 76 sandwiched between opposed carbonaceous plates. A separator is disposed between the anode and the carbonaceous cathode.
For a more detailed description of such a liquid electrolyte cell references may be made to U.S. Patent No. 4,246,327 to Skarstad et al.
The current invention may also be used in a secondary lithium cell. The secondary electrochemical cell which can be used with the present invention includes an anode active material selected from Groups IA, IIA, or IIIB of the Periodic Table of Elements, including the alkali metals lithium, sodium, potassium, etc.
In secondary electrochemical systems, the anode electrode comprises a material capable of intercalating and de-intercalating the alkali metal, and preferably lithium. A carbonaceous anode comprising any of the various forms of carbon (e. g., coke, graphite, acetylene black, carbon black, glassy carbon, etc.) which are capable of reversibly retaining the lithium species, is preferred. Graphite is particularly preferred due to its relatively high lithium-retention capacity.
Regardless of the form of the carbon, fibers of the carbonaceous material are particularly advantageous because the fibers have excellent mechanical properties which permit them to be fabricated into rigid electrodes that are capable of withstanding degradation during repeated charge/discharge cycling. Moreover, the high surface area of carbon fibers allows for rapid charge/discharge rates. A preferred carbonaceous material for the anode of a second<~ry electrochemical cell is described in U.S. Patent No. 5,443,928 to Takeuchi et al., which is assigned to the assignee of the present invention and incorporated herein by reference.
A typical secondary cell anode is fabricated by mixing about 90 to 97 weight percent graphite with about 3 to 10 weight percent of a binder material which is preferably a fluro-resin powder such as polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF), polyethylenetetrafluoroethylene (ETFE), polyamides and polyamides, and mixtures thereof. This electrode active admixture is provided on a current collector such as of a nickel, stainless steel, or copper foil or screen by casting, pressing, rolling or otherwise contacting the active admixture thereto.
The anode component further has an extended tab or lead of the same material as the anode current collector, i.e., preferably nickel, integrally formed therewith such as by welding and contacted by a weld to a cell case of conductive metal in: a case-negative electrical configuration. Alternatively, the carbonaceous anode may be formed in some other geometry, such as a bobbin shape, cylinder or pellet to allow an alternate low surface cell design.
The cathode of a secondary cell preferably comprises a lithiated material that is stable in air and readily handled. Examples of such air-stable lithiated cathode materials include oxides, sulfides, selenides, and tellurides of such metals as vanadium, titanium, chromium, copper, molybdenum, niobium, iron, nickel, cobalt and manganese. The more preferred oxides include LiNi02, LiMn204, LiCo02.9zSno,o802, LiCol_xNiX02 and LiCo02.
Before fabrication into an electrode for incorporation into an electrochemical cell, the lithiated active material is preferably mixed with a conducted additive. Suitable conductive additives include acetylene black, carbon black and/or graphite.
Metals such as nickel, aluminum, titanium and stainless steel in powder form are also useful as conductive dilutants when mixed with the above listed active materials. The electrode further comprises a fluoro-resin binder, preferably in a powder form, such as PTFE, PVDF, ETFE, polyamides and polyimides, and mixtures thereof.
To recharge such secondary cells, the.lithium ion comprising the cathode is intercalated into the carbonaceous anode by applying an externally generated electrical potential to recharge t:he cell. The applied recharging electrical potential serves to draw the alkali metal ions from the cathode material, through the electrolyte and into the carbonaceous anode to saturate the carbon comprising the anode. The resulting LiXCs electrode can have an x ranging between O.l and 1Ø
The cell is then provided with an electrical potential and is discharged in a normal manner.
An alternate secondary cell construction comprises intercalating the carbonaceous material with the active alkali material before the anode is incorporated into the cell. In this case, the cathode body can be solid and comprise, but not be limited to, such materials as manganese dioxide, silver vanadium oxide, copper silver vanadium oxide, titanium disulfide,, copper oxide, copper sulfide, iron sulfide, iron disulfide, carbon and fluorinated carbon. However, this approach is compromised by the problems associ<~ted with handling lithiated carbon outside of the cell. Lithiated carbon tends to react when contacted by a:ir.
The secondary cell used in the present invention includes a separator to provide physical segregation between the anode and cathode active electrodes. The separator is of an electrically insulative material to prevent an internal electrical short circuit between the electrodes, and the separator material also is chemically unreactive with the anode and cathode active materials and both chemically unreactive with and insoluble in the electrolyte. In addition, the separator material has a degree of porosity sufficient to allow flow therethrough of the electrolyte during the electrochemical reaction of .the cell. The form of the separator typically is a sheet which is placed between the anode and cathode electrodes. Such is the case when the anode is folded in a serpentine-like structure (not shown) with a plurality of cathode: plates disposed intermediate the anode folds and received in a cell casing or when the electrode combination is rolled or otherwise formed into a cylindrical "jellyroll"
configuration, as shown per Fig. 6.
Illustrative separator materials include fabrics woven from fluoropolymeric fibers of polyethylenetetrafluoroethylene and.
polyethylenechlorotrifluoroethylene used either alone or laminated with a fluoropolymeric microporous film.
Other suitable separator materials include non-woven glass, polypropyene, polyethylene, glass fiber materials, ceramics, a polytetraflouroethylene membrane commercially available under the designation ZITEX
(Chemplast Inc.), a polypropylene membrane commercially available under the designation CELGARD (Celanese Plastic Company, Inc.) and a membrane commercially available under the designation DESIGLAS (C. H. Dexter, Div., Dexter Corp.).
Referring now to Fig. 5, the primary cell 10, according to a second embodiment of the present invention, is of the liquid electrolyte type comprising a cathode electrode 74 having a body 75 of solid cathode material in the form of plates 77, 79 pressed together and .bonded against the cathode current collector 76.
The cathode active material is prei:erably comprised of a metal, a metal oxide, a mixed meta7L oxide or a metal sulfide, and the cathode current collector 76 is fabricated from a thin sheet of metal selected from the group consisting of nickel, aluminum, stainless steel, mild steel and titanium, with titanium being preferred.
As further shown in Fig. 5, cell 10 includes an alkali metal anode electrode, generally designated 81, comprising a unitary, conductive member which serves as the anode current collector and is fabricated from a thin sheet of metal, preferably nickel, having a pair of wing-like sections 83 and 84 joined by an intermediate web section 85. The preferred alkali metal for the anode is lithium. Lithium anode elements 86 and 87 are in pressure bonded contact with and carried by corresponding ones of the electrode wing sections 83 and 84, respectively. The wing-like sections 83 and 84 are of mesh formation to facilitate adherence to the lithium anode elements 86, 87. The lithium anode elements 86 and 8.7 are of similar shape or configuration as the corresponding electrode wing sections 83 and 84, respectively, but of a slightly larger size or surface area so as to define a marginal or peripheral extension or border surrounding the perimeter of each wing section. Thus, the length and width of each of the lithium anode elements 86 and 87 is slightly greater than the length and width of the corresponding electrode wing section 83 and 84 with the anode elements terminating at an edge 88 a short distance from electrode web section 85.
To construct an anode-cathode: subassembly according to the present invention, the electrode wing sections 83, 84 with the associated anode lithium elements 86, 87 are folded relative to web section 85 and toward each other and in a manner to place the lithium anode elements 86, 87 in operative contact with the oppositely directed surfaces 89 and 90 of the cathode body 75. In particular, lithium anode element 86 is in operative contact with the cathode body surface 89 through a thin sheet of separator material 91. Similarly, lithium anode element 87 is in operative contact with cathode body surface 90 through a thin sheet of separator material 93 such that separator sheets 91 and 93 surround and envelope the cathode body 75 to prevent direct physical contact with the anode plates 86, 87.
Shielding and insulating sheets (not shown) are also provided between the web section 85 of the anode current collector and the cathode electrode: 74. The terminal lead 22 connected to the current collector 60 of the cathode electrode 74 extends through a header assembly comprising the glass-to-metal seal 70 fitted in the lid 16 (Figs. 3B and 5).
Cell 10 is completed by a liquid electrolyte 95 provided in casing 12 and sealed therein by the provision of a closure means to hermetically close the cell 10. Lead 22 is the positive eslectrical terminal, being connected to the cathode body 75. With anode electrode 82 being in operative contact with the conducting casing 12 through the web section 85 of the anode current collector in electrical contact therewith, the cell 10 of this embodiment of 'the present invention is in a case-negative electrical configuration.
By way of example, in an illustrative cell, the active material of cathode body 75 is a silver vanadium oxide cathode material as described in U.S: Patent Nos.
4,310,609 and 4,391,729 to Ziang et al., or copper silver vanadium oxide as described in U.S. Patent Nos.
5,472,810 and 5,516,340 to Takeuchi et al., all assigned to the assignee of the present invention, the disclosures of which are hereby incorporated by reference. Cathode current collector 76 is of titanium and terminal lead 22 is of molybdenum, separators 91, 93 are of polypropylene, electrolyte 95 is a 1. OM to 1.4M
solution of LiAsF6 or LiPF6 in a 50:50 mixture of, by volume, 1,2-dimethoxyethane and propylene carbonate, glass seal 70 is of TA-23 Hermetic sealing glass, and the metal plug of the closure means is of stainless steel.
The current collector 76 of the present invention can also be employed in a cell having a case-positive electrical configuration. In particular, in the embodiments of Figs. 2 and 5, with the lithium anode elements 86, 87 contacting the conductive cell casing 12, the cell 10 is~in a case-negative electrical configuration. A case-positive electrical configuration is provided by placing the cathode parts in contact with the conductive cell casing 12. In particular, and referring to the anode-cathode subassembly of Fig. 5, a case-positive electrical configuration is provided by replacing lithium anode elements 8E;, 87 with cathode plates 77, 78 on the electrode wing sections 83, 84.
Accordingly, cathode body 75 would be replaced by a pair of lithium anode elements 86, 87 sandwiched together and against the current collector 76 of the present invention serving as an anode current collector which, in turn, is connected to the terminal lead 22 via electrical contact with the collector 76, and insulated from lid 16 by the glass-to-metal seal 70: With the cathode parts in contact with elecitrode wing sections 83, 84 and with the electrode Web section 85 in contact with the cell casing 12, a cell is provided in a case-positive electrical configuration. In all other respects, the anode current collector in the case-positive configuration is similar to that previously described with respect to cell 10 having the case-negative configuration.
In the current invention, the novel glass-to-metal seal 70 has been discussed in conjunction with a prismatic casing 12. However, as previously described, this is for illustrative purposes only. As those who are skilled in the art can appreciate, the novel glass-to-metal seal is useful with any casing design which allows access to the external or internal surface of the terminal lead, depending on the de~~ired design. Tl~e available designs include clam shell, prismatic, cylindrical, or button shapes. It may also be used with a number of different types of batteries including primary lithium batteries, implantable batteries, lithium based rechargeable cells and also acid or alkaline based batteries.
For example, Fig. 6 shows anol=her embodiment of the present invention having a.jellyroll electrode assembly 100. One of the anode electrodes <~nd the cathodes electrode of the jellyroll assembly contains a current collector 60 attached to terminal pin 22 extending above the lid 102 for the casing 101. The terminal pin 22 extends through the sleeve 68 sealed in an opening in the lid by the glass-to-metal seal 70. The battery further contains a fill opening 10:1 sealed by plug 103.
Now, it is therefore apparent that the present invention accomplishes its intended objects. While embodiments of the present invention have been described in detail, which is for the purpose of illustration, not limitation.
Claims (20)
1. An electrochemical cell, comprising:
a) a casing of electrically conductive material having an open end;
b) a first and second electrode having a separator disposed therebetween inside the casing in electrical association with each other, wherein at least one of the electrodes includes a current collector;
c) an electrolyte activating the first and second electrodes;
d) a lid of electrically conductive material closing the open end of the casing;
e) a terminal lead, said lead having a first end disposed inside the casing adapted to be connected to the current collector and a second end to be connected to a load; and f) a conductive sleeve, said sleeve is nested in an opening in the lid and said terminal lead is disposed inside the sleeve and attached thereto.
a) a casing of electrically conductive material having an open end;
b) a first and second electrode having a separator disposed therebetween inside the casing in electrical association with each other, wherein at least one of the electrodes includes a current collector;
c) an electrolyte activating the first and second electrodes;
d) a lid of electrically conductive material closing the open end of the casing;
e) a terminal lead, said lead having a first end disposed inside the casing adapted to be connected to the current collector and a second end to be connected to a load; and f) a conductive sleeve, said sleeve is nested in an opening in the lid and said terminal lead is disposed inside the sleeve and attached thereto.
2. The electrochemical cell of claim 1, further comprising a glass-to-metal seal, wherein the sleeve is isolated from the casing by the glass-to-metal seal.
3. An electrochemical cell according to claim 1, wherein said terminal lead has at least a portion of its surface roughened.
4. The electrochemical cell of claim 1, wherein the sleeve and the terminal lead are made from at least one of the group consisting of molybdenum, stainless steel, high ferritic stainless steel, titanium, niobium and tantalum.
5. The electrochemical cell of claim 1, wherein the terminal lead is attached to the sleeve by welding.
6. The electrochemical cell of claim 1, wherein the first and second electrodes are electrically associated in either a jellyroll configuration or in a prismatic configuration.
7. The electrochemical cell of claim 1, as a primary cell.
8. The electrochemical cell of claim 1, as a secondary cell.
9. The electrochemical cell of claim 1, associated with an implantable medical device powered by the cell.
10. A lithium ion electrochemical cell, comprising:
a) a casing of electrically conductive material:
b) an anode and cathode housed inside the casing and having a separator disposed therebetween, wherein the anode is of lithium, and the cathode comprises silver vanadium oxide contacted to an aluminum current collector;
c) a LiPF6 electrolyte activating the anode and cathode;
d) a lid of electrically conductive material closing the open end of the casing;
e) a molybdenum terminal lead, said lead having at least a portion of its surface roughened, and having a first end disposed inside the casing adapted to be connected to the aluminum current collector and a second end to be connected to a load;
f) a conductive sleeve, said sleeve is nested in an opening in the lid and said terminal lead is disposed inside the sleeve and attached thereto.
a) a casing of electrically conductive material:
b) an anode and cathode housed inside the casing and having a separator disposed therebetween, wherein the anode is of lithium, and the cathode comprises silver vanadium oxide contacted to an aluminum current collector;
c) a LiPF6 electrolyte activating the anode and cathode;
d) a lid of electrically conductive material closing the open end of the casing;
e) a molybdenum terminal lead, said lead having at least a portion of its surface roughened, and having a first end disposed inside the casing adapted to be connected to the aluminum current collector and a second end to be connected to a load;
f) a conductive sleeve, said sleeve is nested in an opening in the lid and said terminal lead is disposed inside the sleeve and attached thereto.
11. A lithium ion electrochemical cell according to claim 10, further comprising a glass to metal seal, wherein the sleeve is isolated from the casing by the glass to metal seal.
12. A lithium ion electrochemical cell according to claim 10, wherein the conductive sleeve is attached to the terminal lead by welding.
13. An electrochemical cell which comprises:
a) an anode comprising lithium;
b) a cathode having as a cathode active material at least one selected from the group consisting of manganese dioxide, silver vanadium oxide, copper silver vanadium oxide, titanium disulfide, copper oxide, copper sulfide, iron sulfide, iron disulfide, carbon or fluorinated carbon (CF x; and c) an electrolyte activating the anode and the cathode.
a) an anode comprising lithium;
b) a cathode having as a cathode active material at least one selected from the group consisting of manganese dioxide, silver vanadium oxide, copper silver vanadium oxide, titanium disulfide, copper oxide, copper sulfide, iron sulfide, iron disulfide, carbon or fluorinated carbon (CF x; and c) an electrolyte activating the anode and the cathode.
14. A method of providing an electrochemical cell, comprising the steps of:
a) providing a casing of electrically conductive material having an open end;
b) providing a first and second electrode having a separator disposed therebetween inside the casing in electrical association with each other, where providing at least one of the electrodes includes a current collector;
c) providing an electrolyte activating the first and second electrodes;
d) providing a lid of electrically conductive material having an opening therein, closing the open end of the casings;
e) providing a terminal lead, said lead having a first end disposed inside the casing adapted to be connected to the current collector and a second end to be connected to a load; and f) providing a conductive sleeve, said sleeve is nested in an opening in the lid and said terminal lead is disposed inside the sleeve and attached thereto.
a) providing a casing of electrically conductive material having an open end;
b) providing a first and second electrode having a separator disposed therebetween inside the casing in electrical association with each other, where providing at least one of the electrodes includes a current collector;
c) providing an electrolyte activating the first and second electrodes;
d) providing a lid of electrically conductive material having an opening therein, closing the open end of the casings;
e) providing a terminal lead, said lead having a first end disposed inside the casing adapted to be connected to the current collector and a second end to be connected to a load; and f) providing a conductive sleeve, said sleeve is nested in an opening in the lid and said terminal lead is disposed inside the sleeve and attached thereto.
15. The method of claim 14, further providing said terminal lead having at least a portion of its surface roughened.
16. The method of claim 14, further providing a glass-to-metal seal wherein the sleeve is isolated from the casing by the glass-to-metal seal.
17. The method of claim 14, including providing the sleeve and the terminal lead made from at least one of the group consisting of molybdenum, stainless steel, high ferritic stainless steel, titanium, nobium and tantalum.
18. The method of claim 14, including welding the terminal lead to the metal sleeve.
19. The method of claim 14, including providing the first and second electrodes in electrical association in either a jellyroll configuration or in a prismatic configuration.
20. The method of claim 14, associating an implantable medical device powered by the cell.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/840,674 | 2001-04-23 | ||
| US09/840,674 US6670074B2 (en) | 2001-04-23 | 2001-04-23 | Glass to metal seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2359638A1 true CA2359638A1 (en) | 2002-10-23 |
Family
ID=25282933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002359638A Abandoned CA2359638A1 (en) | 2001-04-23 | 2001-10-23 | Novel glass to metal seal |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US6670074B2 (en) |
| EP (1) | EP1255308A3 (en) |
| JP (1) | JP2002373641A (en) |
| CA (1) | CA2359638A1 (en) |
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|---|---|---|---|---|
| WO2024131840A1 (en) * | 2022-12-24 | 2024-06-27 | 杨林 | Electrochemical energy storage device |
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| US6855456B2 (en) * | 2001-10-30 | 2005-02-15 | Medtronic, Inc. | Titanium alloy-pin battery feedthrough for an implantable medical device |
| US20030096162A1 (en) * | 2001-11-09 | 2003-05-22 | Lasater Brian J. | Lithium-ion battery seal |
| US20040101746A1 (en) * | 2002-11-27 | 2004-05-27 | Quallion Llc | Feedthrough assembly and method |
| FR2853455B1 (en) * | 2003-04-04 | 2005-06-17 | ELECTRICAL CONNECTION OF A CONNECTION ON A TERMINAL | |
| AR045347A1 (en) | 2003-08-08 | 2005-10-26 | Rovcal Inc | HIGH CAPACITY ALKAL CELL |
| JP4417676B2 (en) * | 2003-09-18 | 2010-02-17 | パナソニック株式会社 | Nonaqueous electrolyte secondary battery |
| AR047875A1 (en) | 2004-06-04 | 2006-03-01 | Rovcal Inc | ALKAL CELLS THAT PRESENT HIGH CAPACITY |
| FR2875056B1 (en) * | 2004-09-07 | 2007-03-30 | Accumulateurs Fixes | ACCUMULATOR HAVING TWO CURRENT OUTPUT TERMINALS ON A WALL OF ITS CONTAINER |
| US7611805B2 (en) * | 2005-08-30 | 2009-11-03 | Greatbatch Ltd. | Lithium/fluorinated carbon (Li/CFx) electrochemical cell |
| US8790819B1 (en) | 2006-10-06 | 2014-07-29 | Greatbatch Ltd. | Implantable medical assembly |
| US20080085451A1 (en) * | 2006-10-06 | 2008-04-10 | Greatbatch Ltd. | Highly Compact Electrochemical Cell |
| US8550974B2 (en) | 2008-11-13 | 2013-10-08 | Robert Jarvik | Sub-miniature electromechanical medical implants with integrated hermetic feedthroughs |
| US9099720B2 (en) * | 2009-05-29 | 2015-08-04 | Medtronic, Inc. | Elongate battery for implantable medical device |
| US20120107672A1 (en) * | 2010-10-29 | 2012-05-03 | Medtronic, Inc. | Electrode With Interconnection Design for Miniature Electrochemical Cells and Methods of Making |
| CN103828099B (en) | 2011-07-25 | 2018-04-20 | A123系统有限责任公司 | blended cathode material |
| US9812679B2 (en) | 2013-03-12 | 2017-11-07 | Spectrum Brands, Inc. | Feedthrough device |
| US10726998B2 (en) | 2016-01-08 | 2020-07-28 | Energizer Brands, Llc | Feedthrough device |
| DE102016103485A1 (en) * | 2016-02-26 | 2017-08-31 | Schott Ag | Feedthroughs for high external pressure applications and methods of making same |
| JP2020016479A (en) * | 2018-07-23 | 2020-01-30 | 国立大学法人 岡山大学 | Device and method for evaluating electrode and battery kit |
| US11450909B2 (en) | 2018-09-12 | 2022-09-20 | Cardiac Pacemakers, Inc. | Open tube battery housing |
| EP3850927B1 (en) * | 2018-09-13 | 2023-08-23 | Meta System S.p.A. | High power connector and related assembly method |
| KR102837016B1 (en) * | 2018-11-07 | 2025-07-22 | 루트거스, 더 스테이트 유니버시티 오브 뉴 저지 | Enclosures for electrochemical cells |
| DE102019208035B4 (en) | 2019-06-03 | 2021-10-14 | Schott Ag | Glass-to-metal bushing with a sleeve |
| US11923511B2 (en) | 2019-07-12 | 2024-03-05 | Electrochem Solutions, Inc. | Lithium oxyhalide electrochemical cell design for high-rate discharge |
| US11670816B2 (en) * | 2020-08-21 | 2023-06-06 | Greatbatch Ltd. | Glass-to-metal seal terminal pin for an electrochemical cell |
| EP4259271B1 (en) * | 2020-12-11 | 2025-03-19 | BIOTRONIK SE & Co. KG | Electrical component for an implantable medical device |
| DE102021120789A1 (en) * | 2021-08-10 | 2023-02-16 | Schott Ag | Electrical feedthrough |
| DE102022111707A1 (en) | 2022-05-10 | 2023-11-16 | Monbat New Power GmbH | Method for producing an accumulator and accumulator |
| CN115986279A (en) * | 2022-12-30 | 2023-04-18 | 惠州亿纬锂能股份有限公司 | Lithium ion battery |
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| US4358514A (en) * | 1981-03-27 | 1982-11-09 | Honeywell Inc. | Header device for electrochemical cells |
| FR2531271A1 (en) * | 1982-07-30 | 1984-02-03 | Gipelec | MANGANESE LITHIUM BIOXIDE BATTERY |
| US4465743A (en) * | 1982-12-15 | 1984-08-14 | Medtronic, Inc. | Electrochemical cells having lithium tetrachloroiodate cathodes |
| US4794057A (en) * | 1987-07-17 | 1988-12-27 | Duracell Inc. | Separator for electrochemical cells |
| US5821011A (en) * | 1989-10-11 | 1998-10-13 | Medtronic, Inc. | Body implanted device with electrical feedthrough |
| US5727313A (en) | 1992-05-11 | 1998-03-17 | Emerson Electric Co. | Method of manufacturing lid covers for containers and product |
| US5434017A (en) | 1993-11-19 | 1995-07-18 | Medtronic, Inc. | Isolated connection for an electrochemical cell |
| JPH07302597A (en) | 1994-04-29 | 1995-11-14 | Mine Safety Appliances Co | Lithium battery |
| US5709724A (en) | 1994-08-04 | 1998-01-20 | Coors Ceramics Company | Process for fabricating a hermetic glass-to-metal seal |
| US5935728A (en) * | 1997-04-04 | 1999-08-10 | Wilson Greatbatch Ltd. | Electrochemical cell having multiplate and jellyroll electrodes with differing discharge rate regions |
| US5871513A (en) | 1997-04-30 | 1999-02-16 | Medtronic Inc. | Centerless ground feedthrough pin for an electrical power source in an implantable medical device |
| US6174338B1 (en) * | 1997-06-25 | 2001-01-16 | Medtronic, Inc. | Method of making a lithium element and anode assembly for an electrochemical cell |
| US6245464B1 (en) * | 1998-09-21 | 2001-06-12 | Wilson Greatbatch Ltd. | Hermetically sealed lithium-ion secondary electrochemical cell |
| US6224999B1 (en) * | 1999-07-23 | 2001-05-01 | Wilson Greatbatch Ltd. | Header insulator with bosses |
-
2001
- 2001-04-23 US US09/840,674 patent/US6670074B2/en not_active Expired - Fee Related
- 2001-10-23 CA CA002359638A patent/CA2359638A1/en not_active Abandoned
- 2001-11-05 EP EP01309360A patent/EP1255308A3/en not_active Withdrawn
-
2002
- 2002-04-12 JP JP2002110072A patent/JP2002373641A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024131840A1 (en) * | 2022-12-24 | 2024-06-27 | 杨林 | Electrochemical energy storage device |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1255308A2 (en) | 2002-11-06 |
| US20020155350A1 (en) | 2002-10-24 |
| EP1255308A3 (en) | 2003-12-17 |
| US6670074B2 (en) | 2003-12-30 |
| JP2002373641A (en) | 2002-12-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued | ||
| FZDE | Discontinued |
Effective date: 20070223 |