| 摘要 |
PROBLEM TO BE SOLVED: To provide a technology for preventing operation from being stopped in the situation where there is no trouble in the operation even when locking is detected, in control of an electric pump for circulating a liquid coolant.SOLUTION: In the case where locking of an electric pump is detected while drive power is supplied to the electric pump (S12;YES), when a temperature of a liquid coolant is equal to or higher than a threshold temperature Tp1 or a temperature of a switching element in a voltage converter or an inverter is equal to or higher than a threshold temperature Tp2 (S14;Yes), a control device for the electric pump stops supplying drive power to the electric pump. If none of the above applies (S14;No), unlocking control (S17) is performed on an electric pump 32. Therefore, when a foreign substance is meshed into the electric pump, the foreign substance is removed, such that unnecessary electric pump or alarm output caused thereby can be suppressed. |
