Pure electric available power determination method and system, and vehicle

Patent metadata

Field	Value
Publication number	US-12337706-B2
Application number	US-202117915674-A
Country	US
Kind code	B2
Filing date	Apr 9, 2021
Priority date	Apr 10, 2020
Publication date	Jun 24, 2025
Grant date	Jun 24, 2025

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.

First claim

The invention claimed is:

1. A method for determining a pure electric available power, the method being applied to a vehicle comprising a fuel cell, the vehicle further comprising a battery pack and a motor, the fuel cell and the battery pack being electrically connected to the motor, wherein the method comprises:
by one or more processors, monitoring a current travelling state of the vehicle and a current on-off state of the fuel cell;
by one or more processors, 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, wherein the starting-up power refers to a minimum output power of the fuel cell when driving the motor by using the fuel cell has a higher efficiency than an efficiency of driving the motor by using the battery pack, and the current travelling state comprises a current gear state of the vehicle and a current on-off state of an energy-recovery function; and
by one or more processors, 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 and displaying the pure electric available power in a dashboard;
the step of, 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 comprises:
when the current gear state of the vehicle is a non-travelling gear state, and/or the energy-recovery function is in an on-state, and/or the fuel cell is in an on-state, determining the pure electric available power to be 0; and
when the current gear state of the vehicle is a travelling gear state, the energy-recovery function is in an off-state, and the fuel cell is in an off-state, according to a smallest value among the maximum peak power, the maximum output power and the starting-up power, determining the pure electric available power.

2. The method for determining the pure electric available power according to claim 1 , wherein the step of acquiring the maximum peak power outputted by the motor comprises:
acquiring a maximum output torque of the motor and a current rotational speed of the motor; and
according to the maximum output torque and the current rotational speed, determining the maximum peak power.

3. A computing and processing device, wherein the computing and processing device comprises:
a memory storing a computer-readable code; and
one or more processors, wherein when the computer-readable code is executed by the one or more processors, the computing and processing device executes the method for determining the pure electric available power according to claim 1 .

4. The device according to claim 3 , wherein the step of acquiring the maximum peak power outputted by the motor comprises:
acquiring a maximum output torque of the motor and a current rotational speed of the motor; and
according to the maximum output torque and the current rotational speed, determining the maximum peak power.

5. A non-transitory computer-readable medium, wherein the computer-readable medium stores a computer-readable code, and when the computer-readable code is executed, the method for determining the pure electric available power according to claim 1 is performed.

6. A system for determining a pure electric available power, the system being applied to a vehicle comprising a fuel cell, the vehicle further comprising a battery pack and a motor, the fuel cell and the battery pack being electrically connected to the motor,
one or more processors and a storage apparatus; and
the storage apparatus stores a computer program which, when executed by the processor, perform the operations comprising:
a monitoring module configured for 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, wherein the starting-up power refers to a minimum output power of the fuel cell when driving the motor by using the fuel cell has a higher efficiency than an efficiency of driving the motor by using the battery pack, and the current travelling state comprises a current gear state of the vehicle and a current on-off state of an energy-recovery function; 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 and displaying the pure electric available power in a dashboard;
the step of, 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 comprises:
when the current gear state of the vehicle is a non-travelling gear state, and/or the energy-recovery function is in an on-state, and/or the fuel cell is in an on-state, determining the pure electric available power to be 0; and
when the current gear state of the vehicle is a travelling gear state, the energy-recovery function is in an off-state, and the fuel cell is in an off-state, according to a smallest value among the maximum peak power, the maximum output power and the starting-up power, determining the pure electric available power.

7. The system for determining the pure electric available power according to claim 6 , wherein the operation of acquiring the maximum peak power outputted by the motor, the maximum output power of the battery pack and the starting-up power of the fuel cell comprises:
acquiring a maximum output torque of the motor and a current rotational speed of the motor; and
according to the maximum output torque and the current rotational speed, determining the maximum peak power.

8. A vehicle, the vehicle comprising a fuel cell, a battery pack and a motor, the fuel cell and the battery pack being electrically connected to the motor, wherein the vehicle further comprises the system for determining the pure electric available power according to claim 6 .

9. The vehicle according to claim 8 , wherein the operation of acquiring the maximum peak power outputted by the motor, the maximum output power of the battery pack and the starting-up power of the fuel cell comprises:
acquiring a maximum output torque of the motor and a current rotational speed of the motor; and
according to the maximum output torque and the current rotational speed, determining the maximum peak power.

Assignees

• Great Wall Motor Co Ltd

Inventors

• Wu Maiqing
• Wang Shengbo
• Li Lei
• Liu Zhiwei
• Hao Yang
• Zhang Gengnan
• Wang Linxiao
• Shen Yazhou
• Zhou Mingwang
• Geng Yanlong

Classifications

• B60L15/20

  for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed · CPC title

• B60L58/30 Primary

  for monitoring or controlling fuel cells · CPC title

• Y02T90/40

  Application of hydrogen technology to transportation, e.g. using fuel cells · CPC title

• Y02T10/72

  Electric energy management in electromobility · CPC title

• Y02T10/70

  Energy storage systems for electromobility, e.g. batteries · CPC title