Altis Law Group, Inc.
Battery charging circuit with trickle charging mode
The present invention provides a battery charging control circuit to charge batteries in phases. In a first charging phase the charging circuit charges the batteries with a large current and at a second charging phase the charging circuit charges the batteries with a much smaller current. The charging circuit includes a current detection circuit which detects a charge current and provides a detection voltage proportional to the charge current. The battery charging control circuit also includes an amplifier circuit to amplify the detection voltage and a comparison module compares the amplified detection voltage with a reference voltage. If the amplified detection voltage is lower than the reference voltage, the comparison module outputs a switch signal to a control module. The control module controls a charging module to charge the battery in a trickle mode when receiving the switch signal.
Hon Hai Precision Industry Co., Ltd. Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd.
H
H02J
inventional
Han-Che Xiao-Guang Shin-Hong Hong-Sheng Xin
Wang Li Chung Ouyang Zhao