| 摘要 |
PROBLEM TO BE SOLVED: To surely effectively utilize cooling and heat dissipation of a secondary battery, in a hot water system including a heat pump water heater, the secondary battery and a hot water storage tank.SOLUTION: A hot water system includes: a cooler 15 for cooling a secondary battery 11 with water; an auxiliary tank 4 for storing hot water heated by performing thermal exchange between the cooler 15 and the secondary battery 11; and a supply pump 56 for supplying the hot water of the auxiliary tank 4 to a hot water storage tank 40 when the hot water amount of the hot water storage tank 40 is less than a full hot water level. |
