Fast battery charging method and apparatus with temperature grad

Details Fast battery charging method and apparatus with temperature grad Fast battery charging method and apparatus with temperature grad

1993-09-30

1996-05-21

Wong, Peter S.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 31, H02J 710

Patent

active

055193030

ABSTRACT:
A control circuit and method of operating a battery charging system are provided capable of disabling charging of a rechargeable battery (320) based upon a second derivative (410) of a temperature of the battery. A thermistor (330), contained in a rechargeable battery pack together with the rechargeable battery (320), detects the temperature of the battery. Charging of the battery can be disabled when the second derivative (410) of the temperature of the battery is positive and the first derivative (390) of the temperature of the battery is higher than a predetermined threshold.

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