IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0853237
(2001-05-11)
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발명자
/ 주소 |
- Tucholski, Gary R.
- Laisy, Gary A.
- Sondecker, George R.
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출원인 / 주소 |
- Eveready Battery Company, Inc.
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
9 인용 특허 :
29 |
초록
▼
An electrochemical cell constructed in accordance with the present invention includes a can for containing electrochemical materials including positive and negative electrodes and an electrolyte, the can having an open end and a closed end; a pressure relief mechanism formed in the closed end of the
An electrochemical cell constructed in accordance with the present invention includes a can for containing electrochemical materials including positive and negative electrodes and an electrolyte, the can having an open end and a closed end; a pressure relief mechanism formed in the closed end of the can for releasing internal pressure from within the can when the internal pressure becomes excessive; a first outer cover positioned on the closed end of the can to be in electrical contact therewith and to extend over the pressure relief mechanism; a second outer cover positioned across the open end of the can; and an insulator disposed between the can and the second outer cover for electrically insulating the can from the second outer cover. According to another embodiment, the second cover is dielectrically isolated from a current collector.
대표청구항
▼
An electrochemical cell constructed in accordance with the present invention includes a can for containing electrochemical materials including positive and negative electrodes and an electrolyte, the can having an open end and a closed end; a pressure relief mechanism formed in the closed end of the
An electrochemical cell constructed in accordance with the present invention includes a can for containing electrochemical materials including positive and negative electrodes and an electrolyte, the can having an open end and a closed end; a pressure relief mechanism formed in the closed end of the can for releasing internal pressure from within the can when the internal pressure becomes excessive; a first outer cover positioned on the closed end of the can to be in electrical contact therewith and to extend over the pressure relief mechanism; a second outer cover positioned across the open end of the can; and an insulator disposed between the can and the second outer cover for electrically insulating the can from the second outer cover. According to another embodiment, the second cover is dielectrically isolated from a current collector. insulating fluid channel seal, the contact plate of the fuel cell unit abutting on the fluid guiding element of an adjacent fuel cell unit via said seal. 14. Fuel cell unit as defined in claim 1, wherein the fuel cell unit comprises a fluid channel seal, the fluid guiding element of the fuel cell unit abutting on the contact plate of an adjacent fuel cell unit via said seal. 15. Fuel cell unit as defined in claim 14, wherein the fluid channel seal comprises a coating on at least one of the fluid guiding element and the contact plate. 16. Fuel cell unit as defined in claim 14, wherein the fluid channel seal comprises a flat seal. 17. Fuel cell unit as defined in claim 14, wherein the fluid channel seal comprises at least two separate sealing elements. 18. Fuel cell unit as defined in claim 14, wherein the fluid channel seal comprises a slide fit sealing. 19. Fuel cell unit as defined in claim 14, wherein the fluid channel seal comprises a material viscous at the operating temperature of the fuel cell unit. 20. Composite block of fuel cells, comprising a plurality of fuel cell units as defined in claim 1, said units following one another along a stacking direction. 21. Composite block of fuel cells as defined in claim 20, wherein the composite block of fuel cells comprises at least one clamping element for bracing the fuel cell units against one another. 22. Composite block of fuel cells as defined in claim 21, wherein the composite block of fuel cells comprises two end plates adapted to be braced against one another by means of the clamping element. 23. Composite block of fuel cells as defined in claim 22, wherein at least one of the end plates has at least one fluid port. 24. Composite block of fuel cells as defined in claim 20, wherein the fluid guiding element of at least one of the fuel cell units is connected to the contact plate of an adjacent fuel cell unit by way of flanging. 25. Composite block of fuel cells as defined in claim 24, wherein a flange fold area engaging around the contact plate of the adjacent fuel cell unit is formed on the fluid guiding element of at least one of the fuel cell units. 26. Composite block of fuel cells as defined in claim 25, wherein an electrically insulating fluid channel seal is arranged between the flange fold area and the contact plate of the adjacent fuel cell unit. 27. Method for manufacturing a composite block of fuel cells having a plurality of fuel cell units as defined in claim 1, comprising the following method steps: assembling the individual fuel cell units by arranging a cathode-anode-electrolyte unit between a contact plate and a fluid guiding element and fluid-tight connecting the contact plate to the fluid guiding element by way of welding or by way of soldering so that the fluid guiding element and the contact plate define therebetween a fluid chamber having a combustible gas or an oxidation agent flowing through it during operation of the fuel cell unit; subsequently assembling the composite block of fuel cells by arranging a plurality of fuel cell units along a stacking direction and fixing the fuel cell units in their position relative to one another. 28. Method as defined in claim 27, wherein the fuel cell units of the composite block of fuel cells are braced against one another by at least one clamping element. 29. Method as defined in claim 28, wherein the fuel cell units of the composite block of fuel cells are arranged between two end plates and the two end plates are braced against one another. 30. Method as defined in claim 27, wherein the fluid guiding element of at least one fuel cell unit abuts on the contact plate of an adjacent fuel cell unit via a flat seal or a slide fit sealing. 31. Method for manufacturing a composite block of fuel cells having a plurality of fuel cell units as defined in claim 1, comprising the following method steps: assembling several fluid guiding element-contact plate units by connecting a respective fluid guiding elemen t of one fuel cell unit to a contact plate of an adjacent fuel cell unit by way of flanging; forming a stack consisting of fluid guiding element-contact plate units following one another along a stacking direction, wherein one respective cathode-anode-electrolyte unit is arranged between two such respective fluid guiding element-contact plate units; fluid-tight connecting the contact plates of the fuel cell units to the respective fluid guiding element of the same fuel cell unit by way of welding or by way of soldering so that the fluid guiding element and the contact plate of the same fuel cell unit define therebetween a fluid chamber having a combustible gas or an oxidation agent flowing through it during operation of the fuel cell unit. 32. Fuel cell unit as defined in claim 2, wherein the cathode-anode-electrolyte unit is held between the fluid guiding element and the contact plate. 33. Fuel cell unit as defined in claim 19, wherein the fluid channel seal comprises a solder glass. 34. Fuel cell unit, comprising: a cathode-anode-electrolyte unit, a contact plate in electrically conductive contact with the cathode-anode-electrolyte unit, and a fluid guiding element being formed as a shaped sheet metal part and connected to the contact plate in a fluid-tight manner, said fluid guiding element and said contact plate forming a two-part shell surrounding said cathode-anode-electrolyte unit of the fuel cell unit. 35. Fuel cell unit, comprising: a cathode-anode-electrolyte unit, a contact plate in electrically conductive contact with the cathode-anode-electrolyte unit, a fluid guiding element being formed as a shaped sheet metal part and connected to the contact plate in a fluid-tight manner, and an electrically insulating fluid channel seal arranged between the contact plate of the fuel cell unit and the fluid guiding element of an adjacent fuel cell unit or between the fluid guiding element of the fuel cell unit and the contact plate of an adjacent fuel cell unit, said fluid channel seal surrounding a fluid port provided in the fluid guiding element or a fluid port provided in the contact plate and said fluid channel seal being spaced apart from the electrolyte of the cathode-anode-electrolyte unit of the fuel cell unit. 36. Fuel cell unit, comprising: a cathode-anode-electrolyte unit, a contact plate in electrically conductive contact with the cathode-anode-electrolyte unit, and a fluid guiding element being formed as a shaped sheet metal part and connected to the contact plate in a fluid-tight manner, said fluid guiding element forming a boundary of a fluid chamber having fluid flowing through it during operation of the fuel cell unit and abutting on the cathode-anode-electrolyte unit via an electrically insulating seal. 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