Battery charger having a temperature sensor and a rechargeable b

Details Battery charger having a temperature sensor and a rechargeable b Battery charger having a temperature sensor and a rechargeable b

1995-01-23

1997-01-07

Wong, Peter S.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 21, H02J 704, H01M 1044

Patent

active

055920705

ABSTRACT:
A temperature sensor avoids battery charger over-heating when rechargeable batteries arc charged In succession. The battery charger is provided with a control means having a voltage detection section and a control circuit. The control circuit stops charging when a rechargeable battery reaches full charge. The control means also has a temperature sensor to determine the temperature of heat producing elements in the power supply circuit. Charging current is reduced when the temperature of heat generating elements exceeds a specified temperature. Full charge detection is suspended when charging current is reduced to avoid false detection.

REFERENCES:
patent: 3969665 (1976-07-01), Rowas
patent: 4317075 (1982-02-01), Guerbet
patent: 4775827 (1988-10-01), Ijntema et al.
patent: 5519302 (1996-05-01), Mino et al.

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