Patent ID: 9735599
Date: 2017-08-15
CPC Classifications: H01M,H02J,Y02E

Claim:
1. A battery charger, comprising: an input supply terminal configured to receive a supply signal, a battery terminal configured to be connected to a battery, a supply switching circuit arranged in an electrical path between the battery terminal and the input supply terminal, a fuel gauge device configured to provide a digital estimation of a voltage signal across the battery, a control device configured to generate a control signal to control operation of the supply switching circuit, in response to a difference between the digital estimation of the voltage signal across the battery and a reference signal, and a correction device configured to modify said control signal generated by the control device if said digital estimation of the voltage signal across the battery is out of a value range between a first threshold and a second threshold by modifying the reference signal, wherein the first threshold is lower than the second threshold.