公开(公告)号：US20230219436A1

公开(公告)日：2023-07-13

申请号：US18009363

申请日：2021-09-29

Applicant: GREAT WALL MOTOR COMPANY LIMITED

Inventor： Mingwang ZHOU ,  Xuejing YANG ,  Shujiang CHEN ,  Gengnan ZHANG ,  Yipo HU

IPC: B60L53/20 ,  H02M3/156 ,  H02M1/36 ,  H02M1/34 ,  H02J7/00

CPC classification number: B60L53/20 ,  H02M3/156 ,  H02M1/36 ,  H02M1/34 ,  H02J7/007 ,  B60L2210/10

Abstract: A DC converter, a controlling method, and a vehicle are provided. The DC converter includes: a first inductor, a switching unit, a diode, a first capacitor, a load resistor, a pre-charge control unit and a controller. The output terminal of the controller is connected with the control terminal of the switching unit and the control terminal of the pre-charge control unit. The controller is configured to control the switching unit to be turned on or turned off, and to control the resistor connected between the negative electrode of the diode and the first end of the load resistance in the pre-charge control unit when the switching unit is turned off, such that the direct current converter is pre-charged by the low-voltage power supply.

公开(公告)号：US20230139991A1

公开(公告)日：2023-05-04

申请号：US17915674

申请日：2021-04-09

Applicant: GREAT WALL MOTOR COMPANY LIMITED

Inventor： Maiqing WU ,  Shengbo WANG ,  Lei LI ,  Zhiwei LIU ,  Yang HAO ,  Gengnan ZHANG ,  Linxiao WANG ,  Yazhou SHEN ,  Mingwang ZHOU ,  Yanlong GENG

IPC: B60L50/71 ,  B60L58/31 ,  B60L58/40 ,  B60L50/75

Abstract: The present disclosure provides a method and system for determining a pure electric available power and a vehicle, the method being applied to a vehicle including a fuel cell, the vehicle further including a battery pack and a motor, the fuel cell and the battery pack being electrically connected to the motor, wherein the method includes: monitoring a current travelling state of the vehicle and a current on-off state of the fuel cell; acquiring a maximum peak power outputted by the motor, a maximum output power of the battery pack and a starting-up power of the fuel cell; and according to the current travelling state, the current on-off state of the fuel cell, the maximum peak power, the maximum output power and the starting-up power, determining the pure electric available power. The present disclosure may quickly determine the pure electric available power, without complicated logical operation, and the operation states of the vehicle, the fuel cell system, the motor and the battery pack are taken into consideration at a same time, whereby the determined pure electric available power is closer to the actual available power.

公开(公告)号：US20230040763A1

公开(公告)日：2023-02-09

申请号：US17790152

申请日：2021-01-11

Applicant: GREAT WALL MOTOR COMPANY LIMITED

Inventor： Yinlei WANG ,  Tong KANG ,  Gengnan ZHANG ,  Zhenmin JIANG ,  Baogang WANG ,  Xiu LIU

IPC: H02J7/14 ,  B60L58/15 ,  B60L7/10

Abstract: The present disclosure relates to the field of vehicle technology and provides an energy recovery control method, a system, and a vehicle. The method is applied in a vehicle, and the vehicle comprises a drive motor and a battery electrically connected to the drive motor; a first energy recovery torque curve with respect to the drive motor is pre-configured in the vehicle, and the first energy recovery torque curve is used to indicate a correspondence relationship between vehicle speed and energy recovery torque of the drive motor. The present disclosure performs reduction on a first energy recovery torque curve by means of utilizing a reduction ratio, allowing energy recovery in accordance with a relatively low torque strength when a usable charge power of the battery is unable to satisfy a preset power requirement corresponding to the first energy recovery torque curve.