公开(公告)号：US20230035893A1

公开(公告)日：2023-02-02

申请号：US17789863

申请日：2021-01-08

Applicant: GREAT WALL MOTOR COMPANY LIMITED

Inventor： Zhaolue SUN ,  Zepeng LI ,  Chao QIAN ,  Haijun SONG

IPC: H02M1/00 ,  H02J7/00 ,  B60L15/20

Abstract: A method and device for controlling a DCDC converter, used for a hybrid electric vehicle and relating to the technical field of vehicle control. The method comprises: according to an output end current limit value and an actual voltage value, acquiring a first preset value corresponding to an input end power; according to the maximum discharge power of a high-voltage battery and the actual discharge power of an electric motor, acquiring a second preset value corresponding to the input end power; and determining the minimum value in the first preset value and the second preset value as an input end target power limit value. Multiple combination working conditions of sufficient or insufficient power sources at the input end are considered.

公开(公告)号：US20230043607A1

公开(公告)日：2023-02-09

申请号：US17790232

申请日：2021-01-14

Applicant: GREAT WALL MOTOR COMPANY LIMITED

Inventor： Jie ZHANG ,  Hailan WANG ,  Lei ZHANG ,  Xiao WANG ,  Haijun SONG ,  Yan SUN

IPC: B60W20/40 ,  B60W10/08 ,  B60W10/02

Abstract: A turbo lag boost compensation method is provided, including: calculate a theoretically required boost torque Ts; compare the theoretically required boost torque Ts with the maximum output torque Tpmax of a P2 motor; when Ts≥Tpmax, a required output boost torque Ts′ is equal to Tpmax; when Ts

公开(公告)号：US20230173950A1

公开(公告)日：2023-06-08

申请号：US17921935

申请日：2021-05-08

Applicant: GREAT WALL MOTOR COMPANY LIMITED

Inventor： Maiqing WU ,  Nan ZHANG ,  Dandan SONG ,  Haijun SONG ,  Yang HAO ,  Chaozhi ZHANG

IPC: B60L58/40 ,  H01M16/00 ,  H01M8/04858

CPC classification number: B60L58/40 ,  H01M8/04925 ,  H01M16/006 ,  H01M2250/20 ,  H01M2250/402

Abstract: A method and system for managing energy of a fuel cell vehicle and a vehicle. The method is applied to a vehicle including a fuel cell, the vehicle further includes a power battery and a motor, the fuel cell and the power battery are electrically connected to the motor, and the method includes: acquiring a required power of the vehicle, a rated output power of the fuel cell and a current energy efficiency of the power battery; and according to at least one of the required power, the rated output power and the current energy efficiency, controlling the power battery to operate, and controlling the fuel cell to supply electric power at the rated output power or stop supplying electric power. In the present disclosure, not only the power battery can operate in the state of a reasonable energy efficiency to the largest extent, but also the fuel cell can always be in the two states of operating at the rated output power or of stopping operating, which prevents the problem that the fuel cell frequently operates at a non-rated output power, which results in a low economic efficiency of the hydrogen fuel and affects the economic efficiency of the entire vehicle.

公开(公告)号：US20230271530A1

公开(公告)日：2023-08-31

申请号：US17918148

申请日：2021-04-23

Applicant: GREAT WALL MOTOR COMPANY LIMITED

Inventor： Maiqing WU ,  Lei LI ,  Zhiwei LIU ,  Dandan SONG ,  Haijun SONG ,  Leiming DU

IPC: B60L58/27 ,  B60L58/34 ,  B60L58/40 ,  H01M10/625 ,  H01M10/657 ,  H01M16/00 ,  H01M10/633

CPC classification number: B60L58/27 ,  B60L58/34 ,  B60L58/40 ,  H01M10/625 ,  H01M10/633 ,  H01M10/657 ,  H01M16/006 ,  B60L2240/545

Abstract: A method for heat preservation of a battery of a vehicle by feeding electric power is provided. This method includes: determining an expected vehicle usage time after charging of the battery of the vehicle has been completed and an expected activation time of a function of heating by feeding electric power for heating the battery; and controlling, when the expected activation time is reached, the vehicle to activate the function of heating by feeding electric power according to a current temperature of the battery and the expected vehicle usage time in order that the current temperature of the battery reaches a safety temperature upper threshold to complete heat preservation for the battery. According to the method in the present disclosure, an influence of low temperature on the battery will be avoided, and a waste of electric energy caused due to continuous heating of the battery may be avoided.

公开(公告)号：US20230219552A1

公开(公告)日：2023-07-13

申请号：US18009380

申请日：2021-06-11

Applicant: GREAT WALL MOTOR COMPANY LIMITED

Inventor： Jie ZHANG ,  Xiao WANG ,  Hailan WANG ,  Lei ZHANG ,  Haijun SONG ,  Nan ZHANG ,  Yan SUN ,  Yazhou SHEN

IPC: B60W20/10 ,  B60W20/20

CPC classification number: B60W20/10 ,  B60W20/20 ,  B60W2720/40

Abstract: A method for controlling an interference torque for a vehicle is provided. The method is applied to a new energy vehicle including an electric motor and an engine, and includes steps of: arbitrating between a pedal torque of a driver and an interference torque required by ESP; performing an initial allocation on the electric motor and/or the engine in response to the pedal torque when the vehicle is in a hybrid drive mode, to meet an engine torque request while ensuring that the engine is operated at an optimal operation point; and determining, based on the initial allocation, whether the motor is capable of fully responding to the arbitrated torque, if so, controlling the motor to respond to the arbitrated torque in priority, otherwise controlling the engine and the motor to cooperatively respond to the arbitrated torque.