| 摘要 |
A storage battery system 1; 101 includes: a secondary battery 8; 108; a holding member 10; 110 comprising a flow channel 11; 110a-110g of a cooling medium 4 for cooling the secondary battery 8; 108, which holds the secondary battery 8; 108; a medium temperature measuring means 12a, 12b; 112a, 112b for measuring temperatures T1 and T2 of the cooling medium 4 at two locations in the flow channel 11; 110a-110g; a battery temperature measuring means 12c; 112c, 112d for measuring a temperature T3 of the secondary battery 8; 108; and a judging means 13 for repetitively calculating a coefficient ± and judging a cooling performance of the secondary battery 8; 108 based on a variation of the coefficient ±, the coefficient ± being defined as (T3 - T1)/(T2 - T1), (T3 - T2)/(T2 - T1), or (T3 - T2)/(T3 - T1). |
