公开(公告)号：US09958509B2

公开(公告)日：2018-05-01

申请号：US15155691

申请日：2016-05-16

Applicant: FOUNDATION OF SOONGSIL UNIVERSITY—INDUSTRY COOPERATION

Inventor： Woojin Choi ,  Moonsik Choi

IPC: H02J7/00 ,  H02J7/14 ,  G01R31/36

CPC classification number: G01R31/3679 ,  G01R31/3662 ,  H02J7/0029 ,  H02J7/0042 ,  H02J7/0047 ,  H02J7/0068 ,  H02J2007/0059

Abstract: Provided herein is a charger having a battery diagnosis function. The charger is connected between an input power supply supplying an input voltage and a battery and charges the battery with the input voltage. The charger includes a full-bridge-circuit connected to the input power supply and comprising a first switch, a second switch, a third switch, and a fourth switch, a transformer including a primary winding and a secondary winding, wherein the primary winding is connected to the full-bridge-circuit to transform the input voltage received from the full-bridge-circuit and transmits the voltage to the secondary winding, and a rectifying circuit comprising a fifth switch and a sixth switch, connected between the secondary winding and the battery, and rectifying the voltage received from the transformer to charge the battery, or transmitting power in two directions for diagnosing a state-of-health of the battery.