POWER SUPPLY SYSTEM

Abstract

A power supply system includes a first battery, a second battery, a voltage converter connected to a power generator or an external power supply, and a series-parallel switching circuit configured to switch connection of the first and second batteries between series connection and parallel connection by turning on and off a plurality of relays. The power supply system performs charge equalization control, namely control of alternatingly performing a first battery charging process and a state-of-charge equalization process. The first battery charging process is a process of charging the first battery by turning on and off the relays. The state-of-charge equalization process is a process of equalizing the state of charge of the first battery and the state of charge of the second battery. The power from the power generator or the external power supply is supplied to the auxiliary equipment or the auxiliary battery during the state-of-charge equalization process.

CPC Classifications