SOUND CONTROLLING METHOD AND DEVICE OF PULSE HEATING FOR POWER BATTERY AND ELECTRIC VEHICLE

The disclosure provides a sound controlling method of pulse heating for power battery, including: when turning on a pulse heating function of the power battery, obtaining a request value of a pulse heating current and a music to be played; determining a target tune corresponding to the music to be played according to the request value of the pulse heating current; determining a switching frequency of an IGBT corresponding to each note according to the target tune of the music to be played and each note of the music to be played; determining a period corresponding to each switching frequency according to a beat duration corresponding to each note of the music to be played; during each period, inputting the corresponding switching frequency and preset duty cycle to the IGBT, enabling the IGBT to output current, when a difference between a current value output by the IGBT and the request value of the pulse heating current exceeding a preset range, adjusting the duty cycle through controlling the IGBT, and enabling the current value of the IGBT to gradually approach the request value of the pulse heating current.