Battery manager chip with differential temperature sensing

Details Battery manager chip with differential temperature sensing Battery manager chip with differential temperature sensing

1990-12-21

1992-04-07

Stephan, Steven L.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 31, H02J 704

Patent

active

051031566

ABSTRACT:
A battery management chip which controls charging and discharging currents of a rechargeable battery. The chip includes a differential temperature-sensing circuit, for connection to two separate temperature-sensing devices. Thus, one thermistor can be placed in close thermal contact with the casing of the battery, while the other thermistor is exposed to ambient temperature. This permits a temperature rise in the battery to be sensed. This is very useful in controlling charging characteristics. Otherwise, the rate of charging current may be excessive under a low ambient temperature and lower than necessary under high ambient temperature.

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