Secondary battery charging/discharging device, power storage system using secondary battery, secondary battery charging/discharging method, and secondary battery charging/discharging program

摘要

Secondary battery charging / discharging device, secondary battery charging / discharging system, secondary battery charging / discharging method, and secondary battery that minimize power efficiency degradation due to switching loss due to pulse charging / discharging and maximize capacity A battery charge / discharge program is provided. A charging / discharging device for a secondary battery according to the present invention is a charging / discharging device for a secondary battery that performs pulse charging in which charging and charging pause are alternately repeated, or pulse discharging in which discharging and discharging pause are alternately repeated. Switch means for performing pulse charge or pulse discharge while being turned on / off at a predetermined pulse frequency, and control means for controlling on / off of the switch means, according to the number of charge / discharge cycles of the secondary battery. Pulse charge or pulse discharge is performed at the pulse frequency.