SECONDARY BATTERY COOLING SYSTEM

摘要

A secondary battery cooling system includes a temperature sensor for detecting a temperature of a battery, an electrically operated cooling fan, and a control unit. The control unit determines whether or not cooling of the battery is necessary based on the battery temperature detected by the temperature sensor and a heat value of the battery estimated when an ignition switch is turned off, and, if the battery temperature is lower than a predetermined temperature and the estimated battery heat value exceeds a predetermined value in the determination, extends a length of time from the determination to a start of driving of the electrically operated cooling fan compared to when the heat value does not exceed the predetermined value, and cools the battery while the ignition switch of the vehicle is turned off. The battery can be thus cooled efficiently while charge and discharge is suspended.

主权项

1. A secondary battery cooling system, comprising:
a temperature sensor configured to detect a temperature of a secondary battery mounted on a vehicle; a cooling mechanism configured to cool the secondary battery; and a control unit configured to stop driving of the cooling mechanism, wherein the control unit determines whether or not cooling of the secondary battery is necessary based on the temperature of the secondary battery detected by the temperature sensor and a heat value of the secondary battery which is estimated, and if the temperature of the secondary battery is lower than a predetermined temperature and the heat value of the secondary battery which is estimated exceeds a predetermined value in the determination, the control unit extends a length of time from the determination to a start of driving of the cooling mechanism compared to when the heat value does not exceed the predetermined value, and cools the secondary battery while the ignition switch of the vehicle is turned off.