Battery charge control circuit

Details Battery charge control circuit Battery charge control circuit

1993-09-15

1996-02-20

Wong, Peter S.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 13, 320 30, 320 29, H02H 718, H01M 1044, H02J 710

Patent

active

054931975

ABSTRACT:
Circuit groups for preventing a battery from being deteriorated in efficiency due to a charging and discharging of each of secondary batteries is incorporated in a battery protection circuit for protecting a plurality of batteries connected in series to thereby extend a life of the battery. The battery protection circuit incorporates therein power down means for extending a time in which a voltage of a remaining capacity becomes 0V as much as possible by causing a current to flow only in the minimum circuit when the battery is overdischarged. Also, when a trouble such as a momentary overcurrent or the like is detected, the circuit can be prevented from set in the power down mode.

REFERENCES:
patent: 4086525 (1978-04-01), Ibsen et al.
patent: 4237385 (1980-12-01), Jurgens et al.
patent: 4595872 (1986-06-01), Ball
patent: 4716354 (1987-12-01), Hacker
patent: 5028858 (1991-07-01), Schnizler et al.
patent: 5304915 (1994-04-01), Sanpei et al.
European Patent Application EP 0 525 744 A1, Feb. 3, 1993 (Eugichi et al.).
European Patent Application EP 0 512 340 A1, Nov. 11, 1992 (Sanpei et al.).
PCT Application PCT/US90/0313, Jan. 10, 1991 (Johnson).

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