A battery self-heating method includes: obtaining a temperature and a state of charge of a battery; determining a current amplitude and a frequency during self-heating of the battery according to the temperature and the state of charge; and performing a closed-loop control on a battery self-heating device according to the current amplitude and the frequency, so as to self-heat the battery. Determining a current amplitude and a frequency may include obtaining a voltage and a voltage threshold of a bus side of the device when the battery enters a self-heating mode; determining a duty ratio threshold according to the voltage and the voltage threshold; determining a correspondence between the current amplitude and the frequency according to the duty ratio threshold; and determining the current amplitude and the frequency according to the temperature and the state of charge, based on the correspondence between the current amplitude and the frequency.
BATTERY SELF-HEATING METHOD, AND VEHICLE
2024-05-09
Patent
Elektronische Ressource
Englisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |