SYSTEM AND METHOD FOR EFFICIENTLY CHARGING A BATTERY OVER A LINEAR OR NONLINEAR INTERFACE

摘要

The system includes a first mechanism for receiving a feedback signal and providing a charging signal to the battery over a first electrical path when the feedback signal indicates that the battery is not fully charged. A secon d mechanism measures a voltage state of the battery via second and third electrical paths and provides the voltage state as the feedback signal to th e first mechanism in response thereto. In the specific embodiment, the first mechanism is a controllable power supply and the second mechanism is a sensi ng circuit. The sensing circuit includes a subtractor circuit that subtracts th e voltage on the second electrical path from the voltage on the third electric al path and provides the feedback signal in response thereto. The second electrical path includes a wire connected between a first terminal of the subtractor circuit and a positive terminal of the battery.