Byd Company Limited

Huawei Digital Power Technologies Co., Ltd.

Huawei Technologies Co., Limited

Wengang Luo

Yunfei Qiao

Jun Wu

Hongjun Wang

Chao Zhang

Lin Ren

Zhaozheng Hou

Daolin Li

Xingchi Wu

Yibo Wang

Junhe Wang

Caihua Pan

Jinze Xu

Zhenpai Luan

Wenkui Si

A power module includes a housing, a circuit component, and a package. The housing includes a main housing, a heat sink, and a fastening layer. A first outer surface of the main housing is provided with a groove. The fastening layer is disposed on a bottom surface of the groove. The heat sink is located on a side opposite to an orientation of the groove. The circuit component includes a heat dissipation surface and a pin. The heat dissipation surface is fastened to the fastening layer through welding. The pin extends out of the first outer surface in a direction away from the fastening layer. The package is configured to cover the circuit component, and to at least partially expose a distal end of the pin.

Power module and manufacturing method thereof, power converter, and power supply device

This disclosure discloses a braking-recovery system and method for a train, and a train. The system includes: a traction network, a train, and an energy storage power station. The energy storage power station is connected to the traction network, the energy storage power station includes a second controller, and the second controller controls the energy storage power station according to the voltage of the traction network to perform charging or discharging. The train includes: an electric brake; a battery; a distributor, connected to the electric brake, where there is a node between the distributor and the electric brake; a bidirectional DC/DC converter, where one end of the bidirectional DC/DC converter is connected to the battery, and another end of the bidirectional DC/DC converter is connected to the node; and a first controller, used to control, when the train is braked, the distributor and the bidirectional DC/DC converter to feed back braking electric energy of the train to the traction network, and control the bidirectional DC/DC converter according to a voltage of the traction network to absorb the braking electric energy of the train by using the battery.

Braking recovery system and method for train, and train

A steering power system for an electric vehicle and a method for controlling same are provided. The steering power system includes: a steering motor; a steering motor controller, configured to control the steering motor; a high voltage power battery, configured to output a first voltage; a low voltage storage battery, configured to output a second voltage; a buck DC-DC converter, configured to convert the first voltage into the second voltage for being supplied to the low voltage storage battery when a high voltage system works; and a boost DC-DC converter, configured to convert the second voltage into the first voltage. When the high voltage system has an abnormal power failure, the boost DC-DC converter converts the second voltage outputted from the low voltage storage battery into the first voltage for being supplied to the steering motor controller.

Steering power system for electric vehicle and method controlling same

A parking interlock system and method for a vehicle is provided. The system includes: a safety state information detecting unit, configured to detect safety state information of the vehicle; an operating state information detecting unit, configured to detect operating state information of the vehicle; a brake; a motor; a low voltage controller, connected to the safety state information detecting unit and the brake respectively, and configured to generate a safety state judgment result based on the safety state information of the vehicle; and a motor controller, connected to the safety state information detecting unit and the motor respectively, and configured to control the motor according to the safety state judgment result received from the low voltage controller, and to send the operating state information of the vehicle to the low voltage controller such that the low voltage controller controls the brake according to the operating state information.

Vehicle parking interlock system and method

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Shenzhen, China

Wengang Luo