Chemistry: electrical current producing apparatus – product – and – Deferred action type – Responsive to movement of electrode on contained electrolyte
Patent
1989-11-09
1990-08-21
Skapars, Anthony
Chemistry: electrical current producing apparatus, product, and
Deferred action type
Responsive to movement of electrode on contained electrolyte
429118, H01M 638
Patent
active
049505653
ABSTRACT:
A reserve activated electrochemical cell has a sealed electrochemical fluid, e.g., an electrolyte, storage reservoir having an expandable free-floating capsule within the reservoir for selectively pressurizing the fluid. The reservoir is provided with a rupturable diaphragm arranged as a fluid-tight seal across an opening defining a fluid conduit through a wall of the reservoir. The reservoir is formed integrally with a container for a cell electrode assembly or stack, e.g., opposite polarity battery electrodes, with a wall therebetween containing the rupturable diaphragm. A selectively operable gas generator within the reservoir is connected to one end of the expandable capsule for providing a gas pressure therein to expand the capsule. The gas generator is operated by a signal applied to the gas generator by electrical connecting leads passing through fluid-tight seals in a wall of the reservoir. In one embodiment of the present invention, the fluid is an electrolyte, and the fluid control apparatus is used in a reserve activated battery housing to store the electrolyte until it is desired to activate the battery. Energization of the gas generator is effective to expand the free-floating capsule to pressurize the electrolyte and ultimately rupture the diaphragm. The pressurized electrolyte is subsequently delivered through the ruptured diaphragm to the cell stack to activate the battery.
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Garoutte Kurt F.
Schisselbauer Paul F.
Halista Mitchell J.
Honeywell Inc.
Jensen Roger W.
Skapars Anthony
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