Power integration system with motor drive and battery charging and discharging function
A power integration system with motor drive and battery charging and discharging function includes a motor, a power integration circuit, and a battery. The motor includes multi-phase paths, and each path has an inductor. The power integration circuit includes an inverter and a charger. The inverter includes multi-phase bridge arms, each bridge arm has an upper switch and a lower switch, and each bridge is correspondingly coupled to each inductor of the motor. The charger a switch, the upper switch and the lower switch of at least one bridge arm of the shared inverter, and the inductor of the shared motor. The switch is coupled between any two bridge arms. The power integration circuit receives a DC power provided by a DC power apparatus, and the charger converts the DC power to charge the battery, and the battery provides power required to drive the motor through the inverter.
1 . A power integration system with motor drive and battery charging and discharging function, comprising:
a motor, comprising multi-phase paths, each path comprising an inductor;
a power integration circuit, comprising:
an inverter, comprising multi-phase bridge arms, each of said bridge arms comprising an upper switch and a lower switch, and each of said bridge arms correspondingly coupled to each inductor of the motor; and
a charger, comprising a switch, and sharing the upper switch and the lower switch of at least one bridge arm of said bridge arms of the inverter and at least one inductor of said inductors of the motor for performing the battery charging and discharging function, wherein the switch is coupled between any two bridge arms; and
a battery, coupled to the power integration circuit,
wherein when the power integration circuit receives a DC power provided by a DC power apparatus, the switch of the charger is turned off for charging the battery; when a voltage of the battery is greater than a reference voltage value, the charger operates in a boost mode for converting the DC power to charge the battery; and when the voltage of the battery is less than the reference voltage value, the charger operates in a buck mode for converting the DC power to charge the battery,
wherein when the battery provides power to a power-receiving apparatus, the switch of the charger is turned off and the charger operates in the boost mode or in the buck mode for the battery to provide power to the power-receiving apparatus, and
wherein the switch of the charger is turned on for the battery to provide power required to drive the motor through the inverter.
2 . The power integration system as claimed in claim 1 , wherein the charger further comprises a front-end DC conversion path, coupled to the upper switch and the lower switch of the at least one bridge arm of the inverter shared by the charger for performing the battery charging and discharging function.
3 . A power integration system with motor drive and battery charging and discharging function, comprising:
a motor, comprising multi-phase paths, each path comprising an inductor;
a power integration circuit, comprising:
an inverter, comprising multi-phase bridge arms, each of said bridge arms comprising an upper switch and a lower switch, and each of said bridge arms correspondingly coupled to each inductor of the motor; and
a charger, comprising a switch, and sharing the upper switch and the lower switch of at least one bridge arm of said bridge arms of the inverter and at least one inductor of said inductors of the motor for performing the battery charging and discharging function; and
a battery, coupled to the power integration circuit,
wherein when the power integration circuit receives a DC power provided by a DC power apparatus, the switch of the charger is turned off for charging the battery; when a voltage of the battery is greater than a reference voltage value, the charger operates in a boost mode for converting the DC power to charge the battery, and when the voltage of the battery is less than the reference voltage value, the charger operates in a buck mode for converting the DC power to charge the battery,
wherein the battery provides power to a power-receiving apparatus, the switch of the charger is turned off and the charger operates in the boost mode or in the buck mode for the battery to provide power to the power-receiving apparatus,
wherein the switch of the charger is turned on for the battery to provide power required to drive the motor through the inverter, and
wherein the switch is coupled between any one of said inductors of the motor and the DC power apparatus.
4 . The power integration system as claimed in claim 3 , wherein the charger further comprises a front-end DC conversion path, coupled to the upper switch and the lower switch of the at least one bridge arm of the inverter shared by the charger for performing the battery charging and discharging function.
5 . A power integration system with motor drive and battery charging and discharging function, comprising:
a motor, comprising multi-phase paths, each path comprising an inductor;
a power integration circuit, comprising:
an inverter, comprising multi-phase bridge arms, each of said bridge arms comprising an upper switch and a lower switch, and each of said bridge arms correspondingly coupled to each inductor of the motor; and
a charger, comprising a switch and a sub path, and sharing the upper switch and the lower switch of at least one bridge arm of said bridge arms of the inverter and at least one inductor of said inductors of the motor for performing the battery charging and discharging function, wherein the switch is coupled between any one of said bridge arms of the inverter and the corresponding inductor of the motor; and
a battery, coupled to the power integration circuit,
wherein when the power integration circuit receives a DC power provided by a DC power apparatus, the switch of the charger is turned off for charging the battery; when a voltage of the battery is greater than a reference voltage value, the charger operates in a boost mode for converting the DC power to charge the battery, and when the voltage of the battery is less than the reference voltage value, the charger operates in a buck mode for converting the DC power to charge the battery,
wherein the battery provides power to a power-receiving apparatus, the switch of the charger is turned off and the charger operates in the boost mode or in the buck mode for the battery to provide power to the power-receiving apparatus,
wherein the switch of the charger is turned on for the battery to provide power required to drive the motor through the inverter, and
wherein the sub path is coupled to the switch, the DC power apparatus and the power-receiving apparatus.
6 . The power integration system as claimed in claim 5 , wherein the charger further comprises a front-end DC conversion path, coupled to the upper switch and the lower switch of the at least one bridge arm of the inverter shared by the charger for performing the battery charging and discharging function.
7 . The power integration system as claimed in claim 5 , wherein the sub path comprises a third switch and a first diode, and a common-connected node of the third switch and the first diode is coupled to the switch of the charger.
8 . The power integration system as claimed in claim 5 , wherein the sub path comprises a third switch and a fourth switch, and a common-connected node of the third switch and the fourth switch is coupled to the switch of the charger.