BATTERY SYSTEM, MOVING BODY MANAGEMENT SYSTEM AND PHOTOVOLTAIC POWER GENERATION DEVICE MANAGEMENT SYSTEM EQUIPPED WITH SAME, AND COMBINED BATTERY

摘要

Provided is a battery system capable of securing the output performance of a combined battery as a whole in a wide charging rate region, extending the lifetime thereof, and optimizing the battery characteristics of the combined battery in accordance with a mode of use. The battery system 10 has an electricity storage device 20, a charging control device 40, and a remote monitoring device 50. The electricity storage device 20 is equipped with a combined battery 22, wherein the combined battery 22 is charged by power supplied from an external power supply 12 and is configured by connecting a high-energy secondary battery 22he and a high-output secondary battery 22hp in parallel. The charging control device 40 is connected between the external power supply 12 and the combined battery 22 and controls charging power for the combined battery 22. The remote monitoring device 50 remotely monitors the state of the combined battery 22. A charging control unit 44 of the charging control device 40 and a discharging control unit 28 of the electricity storage device 20 control the combined battery 22 so as to satisfy a use condition of the combined battery 22. A display unit 30 of the electricity storage device 20 notifies an owner of the electricity storage device 20 of a configuration condition of each of the secondary batteries 22he, 22hp.