A secondary battery is installed on an electric vehicle and includes a cooling fan, a temperature sensor and a controller. The controller is configured to drive the cooling fan at a fixed command value for a predetermined period, when the temperature of the secondary battery becomes equal to or higher than a first predetermined temperature after the electric vehicle is started. The controller is configured to detect a presence or absence of an abnormality in the cooling fan based on an actual rotational speed of the cooling fan during the predetermined period. The controller is configured to inhibit driving of the cooling fan at the fixed command value when the temperature of the secondary battery is equal to or higher than a second predetermined temperature that is higher than the first predetermined temperature.
Cooling system for secondary battery
13.08.2019
Patent
Elektronische Ressource
Englisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY / B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht |