公开(公告)号：US20250047126A1

公开(公告)日：2025-02-06

申请号：US18716836

申请日：2022-11-28

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yo KUMODA ,  Shohei YAMANAKA

IPC: H02J7/34 ,  B60R16/033 ,  H02J7/00

Abstract: A charging system supplies a charge current from a power supply to a power storing apparatus. A shunt resistor is connected to a charging path through which the charge current flows. An amplifier is configured to amplify a voltage across the shunt resistor. A controller is configured to control the charging circuit on a basis of an output from the amplifier. A power supplying circuit is configured to supply a drive voltage to the amplifier. The power supplying circuit includes a first feed path including a diode connected between an input terminal and a power supply terminal of the amplifier and a second feed path including a switch connected between the power storing apparatus and the power supply terminal of the amplifier. The switch is configured to be turned on when a charge voltage of the power storing apparatus exceeds a threshold voltage.