LITHIUM ION SECONDARY CELL CHARGE METHOD AND HYBRID VEHICLE

摘要

Provided is a lithium ion secondary cell charge method including: a step S1 which judges whether a physical amount value corresponding to an accumulation amount of a lithium ion secondary cell (100) is lowered to a first predetermined value; a step S2 which judges whether a hybrid vehicle (1) is in a travel stop state; and charge steps S5 to SA which divide a charge period K into two or more divided charge periods KC1, KC2 and a non-charge period KR between the divided charge periods, so that charge is performed during the divided charge periods KC1, KC2 while the hybrid vehicle (1) is in the travel stop state and charge stop or discharge is performed during the non-charge period KR, wherein each of the divided charge periods KC1, KC2 is not shorter than 40 seconds.