Patent ID: 8405354
Filing Date: 2013-03-26
Classification: H02J,Y02B,Y04S

Abstract:
1. A charging control device for an electricity storage system having a battery, the battery being charged by a charger in nighttime and being discharged for a load in a following daytime, the charging control device comprising: an electricity remaining amount detecting unit to detect an electricity remaining amount Wi of the battery; a necessary charge amount calculating unit to calculate a necessary charge amount Wc by subtracting the electricity remaining amount Wi from a necessary electricity amount Wr necessary for the following daytime; a necessary charge period calculating unit to calculate a necessary charge period Tc necessary for charging the battery with the necessary charge amount Wc based on charging properties of the charger and the battery; and a charging starting unit to start a charging from the charger to the battery at a start timing of the nighttime, wherein the start timing is defined to go back by the necessary charge period Tc from a target timing, when the charging is defined to be finished at the target timing.