Battery management method and power supply system

Abstract

The application provides a battery management method and a power supply system. The battery management method includes: providing the power supply system comprising a power supply device and a plurality of battery systems connected in parallel, the power supply device electrically configured to control the charging or discharging of each of the plurality of battery systems connected to each of the plurality of battery systems; detecting an actual voltage of each battery system; controlling the start of battery systems with a low actual voltage for charging or discharging; and controlling the start of battery systems with a high actual voltage after the actual voltage of each battery system is balanced. The battery systems are directly controlled by the power supply device when connected in parallel to the power supply system, such that unlimited capacity expansion may be realized without redesigning the battery systems or adding a BMS.

Dependencies are inferred from the claim text.