Secondary battery pack

Details Secondary battery pack Secondary battery pack

1996-11-06

1998-07-21

Kalafut, Stephen

Chemistry: electrical current producing apparatus, product, and

With nonbattery electrical component electrically connected...

429 50, 429 61, 320134, H01M 1048

Patent

active

057833222

ABSTRACT:
A secondary battery pack includes terminals connected to an external device, a rechargeable battery for storing and utilizing electric charges, a switching circuit for switching a state of the rechargeable battery between a charge state and a discharge state, a charge/discharge state detecting circuit for detecting a mode signal indicating that a charge operation or a discharge operation is to be carried out, a control circuit for controlling an operation of the switching circuit, a first power-source switching circuit which switches a supply of a power source to the control circuit and is controlled in response to a mode detected by the charge/discharge state detecting circuit, and a second power-source switching circuit which switches a supply of a power source to the control circuit and is controlled in response to a mode detected by the charge/discharge state detecting circuit.

REFERENCES:
patent: 4085358 (1978-04-01), Holcomb
patent: 4992340 (1991-02-01), Tidwell et al.
patent: 5547775 (1996-08-01), Eguchi et al.
patent: 5582928 (1996-12-01), Farley
patent: 5648713 (1997-07-01), Mangez

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