公开(公告)号：US20240313566A1

公开(公告)日：2024-09-19

申请号：US18492879

申请日：2023-10-24

Applicant: Richtek Technology Corporation

Inventor： Ping-Fan Wang ,  Po-Chen Liu ,  Jui-Cheng Yang ,  Hung-Chi Chen

IPC: H02J7/00

CPC classification number: H02J7/00714 ,  H02J7/0047

Abstract: A charging/discharging power conversion system includes: a current control circuit, wherein a serial connection of a second battery and the current control circuit is connected in parallel to a first battery between a charging node and a reference voltage level; and an auxiliary current control circuit, including: a current measurement circuit measuring a first battery current and generate a battery current signal; and a current adjustment circuit adjusting a charging current according to the battery current signal via an adjustment procedure, to render the first battery current not to be greater than a first battery current threshold; wherein the adjustment procedure includes: setting the first battery current threshold; setting an initial value of the charging current, such that the initial value of the charging current is equal to a sum of the first battery current threshold plus a second battery current threshold.