Intelligent Battery Charging System.
Patent,Filed 14 Nov 89, patented 3 Sep 91,
DEPARTMENT OF THE NAVY WASHINGTON DC
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The present invention is a battery charging system that provides automatic voltage selection, short circuit protection, and delayed output to prevent arcing or pitting. A second embodiment of the invention provides a homing beacon which transmits a signal so that a battery powered mobile robot may home in on and contact the invention to charge its battery. The invention includes electric terminals isolated from one another. One terminal is grounded and the other has a voltage applied to it through a resistor connected to the output of a DC power supply. A voltage scaler is connected between the resistor and the hot terminal. An OnOff controller and a voltage mode selector sense the voltage provided at the output of the voltage scaler.
- Electrochemical Energy Storage