Chemistry: electrical current producing apparatus – product – and – Sealed cell having gas prevention or elimation means – Prevention or elimination means is one of the cell...
Patent
1972-05-31
1976-11-09
Walton, Donald L.
Chemistry: electrical current producing apparatus, product, and
Sealed cell having gas prevention or elimation means
Prevention or elimination means is one of the cell...
429206, 429223, H01M 1034
Patent
active
039909107
ABSTRACT:
A rechargeable battery comprising two or more electrochemical cells using a reoxidizable nickel oxide at the positive electrode and hydrogen as the negative electrode reactant. The electrodes of the cells are disposed in a common chamber in a battery case and connected so as to series couple the cells between a pair of terminals. The battery case is precharged with hydrogen gas while the positive electrodes are in a discharged state and then is sealed off. Additional hydrogen gas is evolved during charging and the state of charge can be determined by monitoring the gas pressure in the battery case. On discharging the battery, hydrogen is consumed down to the precharge level. The battery has inherent protection against damage from overcharging and overdischarging. The unique overdischarge mechanism prevents battery failure in the event that one cell in the series in discharged prematurely.
REFERENCES:
patent: 3081366 (1963-03-01), Belove
patent: 3306779 (1967-02-01), Flannery et al.
patent: 3432355 (1969-03-01), Niedrach et al.
patent: 3669744 (1972-06-01), Tsenler et al.
Giner Jose
Swette Larry L.
Feeley H. A.
Tyco Laboratories, Inc.
Walton Donald L.
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