Patent ID: 9160186
Filing Date: 2015-10-13
Classification: H02J

Abstract:
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 and at least one output terminal; a switch arranged in the electrical path between the battery terminal and said at least one output terminal; a latch configured to store data representative of an alarm condition indicative of an over current discharge, over voltage discharge, or shipping mode of the battery and to open the switch when said alarm condition occurs, with the supply signal being absent and the battery supplying said at least one output terminal, and to close the switch when said supply signal is received at the input supply terminal; a first comparator configured to detect the over current discharge condition and emit a first output signal; a second comparator configured to detect the over voltage discharge condition and emit a second output signal; and a control circuit connected to first and second comparators and the latch and configured to emit a set signal to the latch in response to at least one of the output signals from the comparators or an external signal representative of the shipping mode condition when the battery supplies the at least one output terminal and emit a reset signal to the latch in response to the signal representative of the presence of a supply voltage at the input supply terminal.