Patent ID: 8551630
Filing Date: 2013-10-08
Classification: H01M,Y02E

Abstract:
1. An electric power storage system comprising: a lithium secondary battery including: a detection unit to detect a temperature T of the lithium secondary battery; and a control unit programmed to decrease a remaining capacity of the lithium secondary battery based on a temperature Tbx (K) when the detected temperature T increases, the temperature Tbx (K) being a temperature of the lithium secondary battery at which Hs(x,Tbx)>Hd(Tbx) holds, where Hs(x,T) (K/min) indicates a self-heating rate of the lithium secondary battery at a temperature T (K) and a remaining capacity x (%), and Hd(T) (K/min) indicates a heat dissipation rate of the lithium secondary battery at the temperature T (K).