Primary-secondary hybrid battery

Details Primary-secondary hybrid battery Primary-secondary hybrid battery

1987-01-08

1989-07-25

Hickey, R. J.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

307 46, 307 66, 320 6, 320 15, H02J 700, H02J 906

Patent

active

048517569

ABSTRACT:
A hybrid battery which provides back-up energy for a main power source to a load. The hybrid battery comprises a rechargeable nickel cadmium battery, a primary lithium battery and a power transistion circuit for controlling the supply selection to the load based on the highest voltage available. The hybrid battery further comprises a charge controller circuit for recharging the nickel cadmium battery from the main power source. Both the power transition circuit and the charge controller circuit isolate each of the energy sources from one another preventing draining whenever one or more of the power sources are off.

REFERENCES:
patent: 3305725 (1967-02-01), Huge et al.
patent: 3555290 (1971-01-01), Ellermeyer
patent: 4009051 (1977-02-01), Kazis et al.
patent: 4061956 (1977-12-01), Brown et al.
patent: 4327298 (1982-04-01), Burgin
patent: 4342922 (1982-08-01), DiMassimo et al.
patent: 4441031 (1984-04-01), Moriya et al.
patent: 4667142 (1987-05-01), Butler
patent: 4675538 (1987-06-01), Epstein
Fordham 1984 Catalog, p. 155, "Sanyo Personal Cassette Player," 1983.

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