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公开(公告)号：US20240367541A1
公开(公告)日：2024-11-07
申请号：US18651981
申请日：2024-05-01
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Zhengyi TANG , Ying LI , Zhongjie LI
Abstract: A power system of an electric vehicle, a controller, and the electric vehicle. The power system includes two drive motors and two motor control units. The two drive motors are separately in transmission connection with wheels of the electric vehicle through two clutch apparatuses. Windings of the two drive motors and three-phase bridge arms of the two motor control units form two boost circuits. The two boost circuits are configured to charge a power battery of the electric vehicle by performing boost conversion on an output voltage of a charging pile. The two clutch apparatuses are configured to disconnect a connection between a drive motor corresponding to a boost circuit that is in an operating state and a wheel. The power system can reduce shake and noise in a boost charging process of the electric vehicle.
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公开(公告)号：US20240017630A1
公开(公告)日：2024-01-18
申请号：US18352401
申请日：2023-07-14
Applicant: Huawei Digital Power Technologies Co., Ltd.
Abstract: A powertrain, a charging control method, and an electric vehicle. The powertrain includes a motor control unit and a motor. The motor control unit includes three bridge arms and a controller. A first end of a direct current power supply is coupled to one end of each bridge arm and a first end of the power battery. A second end of the power battery is coupled to the other end of each bridge arm. A midpoint of each bridge arm is coupled to one end of a motor winding. The other end of each motor winding is coupled to a second end of the direct current power supply. Two bridge arms of each bridge arm are turned on or off based on a first PWM signal and a second PWM signal. The first PWM signal and the second PWM signal are interleaved.
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