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Energy conversion apparatus, motor, power system, and vehicle

專利號(hào)
US11888417B2
公開(kāi)日期
2024-01-30
申請(qǐng)人
Huawei Digital Power Technologies Co., Ltd.（CN Shenzhen）
發(fā)明人
Zhaoxue Cui; Wei Zhang; Ningbo Feng
IPC分類
H02P27/04; H02P27/06; H03K3/037
技術(shù)領(lǐng)域
bridge,winding,arm,converter,charging,motor,current,port,phase,in
地域： Shenzhen

摘要

An energy conversion apparatus, a motor, a power system, and a vehicle are provided. The energy conversion apparatus may integrate a motor drive function by using a three-phase bridge arm converter and a motor winding, and integrate an alternating current charging function by using a two-phase two-bridge-arm converter and a transformer. In this way, the energy conversion apparatus can integrate the charging function and the motor drive function. When the energy conversion apparatus is installed on an electric vehicle, a vehicle integration level can be increased, a structure layout of the electric vehicle can be simplified, and costs and a volume of the electric vehicle can be reduced.

說(shuō)明書

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to Chinese Patent Application No. 202110354753.2, filed on Mar. 31, 2021, which is hereby incorporated by reference in its entirety.

TECHNICAL FIELD

Embodiments of this application relate to the field of energy technologies, and in particular, to an energy conversion apparatus, a motor, a power system, and a vehicle.

BACKGROUND

In the field of energy technologies, a charging technology for electric vehicles is always an important research direction of researchers. In addition to a charger and a battery that are related to charging, a plurality of motors are further mounted on the electric vehicle, for example, a motor that drives the vehicle to travel and a motor in an air conditioner compressor. These functional components on the electric vehicle are all separately distributed, resulting in a complex structure layout, a low integration level, a large volume, and high costs of the electric vehicle.

To increase the vehicle integration level, simplify the structure layout of the electric vehicle, and reduce the costs and volume of the electric vehicle, it is necessary to integrate a charging function and a motor drive function of the electric vehicle.

SUMMARY

Embodiments of this application provide an energy conversion apparatus, a motor, a power system, and a vehicle. The apparatus integrates a charging function and a motor drive function. When the apparatus is installed on an electric vehicle, a vehicle integration level can be increased, a structure layout of the electric vehicle can be simplified, and costs and a volume of the electric vehicle can be reduced.

權(quán)利要求

1
What is claimed is:1. An energy conversion apparatus comprising: a three-phase bridge arm converter, a motor winding, a two-phase two-bridge-arm converter, and a transformer, whereina direct current port of the three-phase bridge arm converter is connected to a battery;an alternating current port of the three-phase bridge arm converter is connected to the motor winding;a direct current port of the two-phase two-bridge-arm converter is connected to the battery;an alternating current port of the two-phase two-bridge-arm converter is connected to a secondary-side winding of the transformer; anda primary-side winding of the transformer is connected to an alternating current charging port.2. An energy conversion apparatus comprising: a three-phase bridge arm converter, a motor winding, and a transformer, whereina direct current port of the three-phase bridge arm converter is connected to a battery;an alternating current port of the three-phase bridge arm converter is connected to the motor winding;two bridge arms of the three-phase bridge arm converter are connected to a secondary-side winding of the transformer through a first switch group, and the first switch group is configured to control connection and disconnection between the transformer and the two bridge arms of the three-phase bridge arm converter;a second switch group is further disposed between the motor winding and the two bridge arms of the three-phase bridge arm converter, and the second switch group is configured to control connection and disconnection between the motor winding and the two bridge arms of the three-phase bridge arm converter; anda primary-side winding of the transformer is connected to an alternating current charging port.3. The energy conversion apparatus according to claim 2, wherein the first switch group and the second switch group comprise a flip-flop K1 and a flip-flop K2;one end of the flip-flop K1 is connected to an alternating current port of a first bridge arm of a two-phase two-bridge-arm converter, and the other end of the flip-flop K1 comprises two contacts respectively connected to the motor winding and a secondary-side winding of the transformer; andone end of the flip-flop K2 is connected to an alternating current port of a second bridge arm of the two-phase two-bridge-arm converter, and the other end of the flip-flop K2 comprises two contacts respectively connected to the motor winding and the secondary-side winding of the transformer.4. The energy conversion apparatus according to claim 1, wherein a fourth switch is disposed between the primary-side winding of the transformer and the alternating current charging port, and is configured to control connection and disconnection between the primary-side winding of the transformer and the alternating current charging port.5. The energy conversion apparatus according to claim 1, wherein an alternating current filter is disposed between the primary-side winding of the transformer and the alternating current charging port.6. The energy conversion apparatus according to claim 1, wherein the transformer is a power frequency transformer.7. A motor comprising: a housing, and an energy conversion apparatus which is accommodated in the housing, wherein the energy conversion apparatus comprises a three-phase bridge arm converter, a motor winding, a two-phase two-bridge-arm converter, and a transformer, whereina direct current port of the three-phase bridge arm converter is connected to a battery;an alternating current port of the three-phase bridge arm converter is connected to the motor winding;a direct current port of the two-phase two-bridge-arm converter is connected to the battery;an alternating current port of the two-phase two-bridge-arm converter is connected to a secondary-side winding of the transformer; anda primary-side winding of the transformer is connected to an alternating current charging port.8. The motor according to claim 7, wherein a fourth switch is disposed between the primary-side winding of the transformer and the alternating current charging port, and is configured to control connection and disconnection between the primary-side winding of the transformer and the alternating current charging port.9. The motor according to claim 7, wherein an alternating current filter is disposed between the primary-side winding of the transformer and the alternating current charging port.10. The motor according to claim 7, wherein the transformer is a power frequency transformer.
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