Rechargeable battery controller

Details Rechargeable battery controller Rechargeable battery controller

1990-11-09

1993-02-16

Stephan, Steven L.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 35, H02J 700

Patent

active

051874253

ABSTRACT:
A battery monitor system is disclosed comprising a microcontroller which monitors voltage inputs from a power adapter and a rechargeable battery. The power adapter includes a voltage source and a current source which outputs two current levels. A thermistor is thermally coupled to the battery, and the microcontroller receives voltage inputs from the battery and the thermistor. The microcontroller monitors and processes the voltage inputs to detect a predetermined voltage change corresponding to a change in the battery temperature and/or voltage level which indicates a fully charged battery. The level of the current which is provided to the battery from the current source is under the control of the microcontroller, such that the battery is maintained in a fully charged state.

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