Power integration circuit with motor drive and battery charging and discharging function

A power integration circuit for use with a motor and a battery, the motor comprising a first inductor, a second inductor, and a third inductor, the power integration circuit comprising:

• an inverter comprising a first bridge arm, a second bridge arm, and a third bridge arm, each of the first bridge arm, the second bridge arm, and the third bridge arm comprising an upper switch and a lower switch, the first bridge arm being configured to be coupled to the first inductor, the second bridge arm being configured to be coupled to the second inductor, and the third bridge arm being configured to be coupled to the third inductor;
• and
• a charger comprising a first switch and a second switch, the charger being configured without a front-end DC conversion path and configured to share at least one bridge arm of the inverter and at least one inductor of the motor,
• wherein the first switch is configured to be coupled between a DC power apparatus and the first inductor,
• wherein the second switch is configured to be coupled between the DC power apparatus and the second inductor,
• wherein, by turning on or turning off the first switch and the second switch, DC power provided by the DC power apparatus is supplied to the power integration circuit through the first inductor and the second inductor, and power is outputted through the third inductor, and
• wherein the charger is configured to operate in a boost mode to charge the battery and to operate in a buck mode to discharge the battery to a power-receiving apparatus.

A method for operating a power integration circuit, the power integration circuit comprising an inverter and a charger and being configured for use with a motor and a battery, the motor comprising a first inductor, a second inductor, and a third inductor, the inverter comprising a first bridge arm configured to be coupled to the first inductor, a second bridge arm configured to be coupled to the second inductor, and a third bridge arm configured to be coupled to the third inductor, and the charger being configured without a front-end DC conversion path, the method comprising:

• coupling, by a switch of the charger, a DC power apparatus to any one inductor of the first inductor, the second inductor, and the third inductor;
• charging the battery in a boost mode through at least one bridge arm of the inverter and at least one inductor of the motor;
• and
• discharging the battery to a power-receiving apparatus in a buck mode through the at least one bridge arm of the inverter and the at least one inductor of the motor.