The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 21, 1990
Filed:
Nov. 09, 1989
Paul F Schisselbauer, Southampton, PA (US);
Kurt F Garoutte, Eden Prairie, MN (US);
Honeywell Inc., Minneapolis, MN (US);
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.