Method for producing improved electrolyte-retention bipolar cells and batteries
원문보기
IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0904492
(1997-08-01)
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발명자
/ 주소 |
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출원인 / 주소 |
- Space Systems/Loral, Inc.
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
4 인용 특허 :
0 |
초록
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Method for producing an improved rechargeable battery, containing a plurality of stacked, nested bipolar cells, in which each bipolar cell is formed by inserting into a bipolar cup a porous condensed phase positive electrode, a porous dielectric separator, and a gas electrode, adding to the bipolar
Method for producing an improved rechargeable battery, containing a plurality of stacked, nested bipolar cells, in which each bipolar cell is formed by inserting into a bipolar cup a porous condensed phase positive electrode, a porous dielectric separator, and a gas electrode, adding to the bipolar cell cups a predetermined volume of a liquid electrolyte, and a plurality of the bipolar cell cups are stacked in a nesting relationship within a battery housing pressure vessel. The invention involves the steps of subjecting the stack of bipolar cell cups within the housing to the application of an initial low pressure, up to about 5 psi, to allow the liquid electrolyte to be absorbed by the porous condensed phase positive electrode and by the porous separator, connecting the cells to the battery terminals and closing the pressure vessel, and cycling the battery at a plurality of charge--discharge cycles starting at a low current up to about 20% of normal operational current and gradually increasing to normal ampere--hour charge, to cause the expansion of the porous electrode and separator and full absorption of the liquid electrolyte. Finally, the stack of bipolar cell cups is subjected to the application of a higher pressure, greater than about 20 psi, to seat and seal the cups to each other and compress the stack to a predetermining height within the battery housing without displacing any of the original electrolyte from any of the bipolar cells.
대표청구항
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[ I claim:] [1.] Method for producing a gas depolarized rechargeable battery, containing a plurality of stacked, nested bipolar cells, comprising the steps of:(a) forming each bipolar cell by inserting into a bipolar cup a porous condensed phase positive electrode, a porous dielectric separator, and
[ I claim:] [1.] Method for producing a gas depolarized rechargeable battery, containing a plurality of stacked, nested bipolar cells, comprising the steps of:(a) forming each bipolar cell by inserting into a bipolar cup a porous condensed phase positive electrode, a porous dielectric separator, and a gas electrode;(b) adding to said bipolar cell cups a predetermined volume of a liquid electrolyte;(c) stacking a plurality of said bipolar cell cups in a nesting relationship within a battery housing comprising a pressure vessel having battery terminals;(d) subjecting the stack of bipolar cell cups to the application of a low pressure, up to about 5 psi, to allow the liquid electrolyte to be absorbed by the porous condensed phase positive electrode and by the porous separator;(e) applying bus leads to the battery terminals and closing the pressure vessel;(f) subjecting the battery to a plurality of charge--discharge burn--in cycles, starting from a lower than normal ampere--hour charge cycle and gradually increasing the charge with each cycle to a final full ampere--hour charge cycle, to cause the expansion of the porous positive electrode and the absorption of the liquid electrolyte thereby, and(g) subsequently subjecting the stack of bipolar cell cups to the application of a higher pressure, greater than about 20 psi, to seat and seal the cups to each other and compress the stack to a predetermining height.
이 특허를 인용한 특허 (4)
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Ogg, Randy; Smith, David Russell; Park, David Fraser, Bi-polar rechargeable electrochemical battery.
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Grignol Tanya R., Cells and gas depolarized batteries and method for producing same.
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West, Jon Kenneth; Higgins, Martin Patrick; Regalado, Julius; George, Anthony, Dish shaped and pressure equalizing electrodes for electrochemical batteries.
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West, Jon Kenneth; Higgins, Martin Patrick; Regalado, Julius; George, Anthony; Zhou, Xin; Citta, Nelson; Citta, Myles; Michael, Allen; Cherisol, Kenneth; West, Daniel J.; Patterson, Barbara, Variable volume containment for energy storage devices.
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