公开(公告)号：US20220256652A1

公开(公告)日：2022-08-11

申请号：US17732160

申请日：2022-04-28

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Xiaowei XIE ,  Chaojie SHI ,  Chaoqiang WU

IPC: H05B1/02 ,  H02P29/40

Abstract: A heating apparatus includes: a motor control unit, having an inverter and a controller that are connected to each other; an electric heater; and a motor, having three-phase windings, where ends of the three-phase windings are connected to the inverter, the other ends of the three-phase windings are connected to a connection point, and the connection point is connected to the electric heater. Therefore, the electric heater can be controlled by using the motor control unit that controls the motor, without a need to independently dispose a control circuit for controlling the electric heater, so that a quantity of controllers, a weight of the heating apparatus, a required occupation space of the heating apparatus, and costs of the heating apparatus can be reduced.

公开(公告)号：US20240133398A1

公开(公告)日：2024-04-25

申请号：US18398910

申请日：2023-12-28

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Chaojie SHI ,  Bayaer EERHEMU ,  Chaoqiang WU ,  Shaohua WANG ,  Xiaowei XIE

IPC: F04D29/58 ,  F04D13/06 ,  H02P21/18 ,  H02P21/22 ,  H02P21/34

CPC classification number: F04D29/588 ,  F04D13/0646 ,  H02P21/18 ,  H02P21/22 ,  H02P21/34

Abstract: Embodiments of this application provide a heating control method and apparatus, an oil pump, and a heat exchange system. The method includes: in a cold state, injecting a heating current into an oil pump motor, where when the oil pump motor is not started, a torque that the heating current is capable of generating is zero, and after the oil pump motor is started, heating power of the heating current is greater than heating power of an energy-saving current, where the energy-saving current is a current capable of enabling a first motor to reach a target operating condition when oil temperature is greater than a preset temperature threshold.