CN-121989908-A - Control method and control system of range-extended vehicle and range-extended vehicle

CN121989908ACN 121989908 ACN121989908 ACN 121989908ACN-121989908-A

Abstract

The application provides a control method and a control system of an extended-range vehicle and the extended-range vehicle. The range extender vehicle includes a range extender. The control method comprises the steps of determining target power of the range extender according to the opening change rate of the accelerator pedal if the opening change rate of the accelerator pedal of the range extender is larger than the first opening change rate, wherein the target power of the range extender is inversely related to the opening change rate of the accelerator pedal, and controlling the range extender to output the target power within a preset time period. According to the application, when the vehicle needs to be accelerated, the target power generation of the range extender is controlled to be inversely related to the opening change rate of the accelerator pedal, so that the total power generation of the range extender is prevented from being too high, the tail gas emission of the vehicle caused by power generation of the range extender is reduced, and the environmental protection performance of the vehicle is improved.

Inventors

QIAN KUN
YU CHANGLIANG
REN XIAOYUN
SHAO JIANPING
Du Ruotao

Assignees

浙江远程商用车研发有限公司
浙江吉利控股集团有限公司
浙江远程新能源商用车集团有限公司

Dates

Publication Date: 20260508
Application Date: 20260330

Claims (11)

1. A control method of an extended-range vehicle including an extended-range extender, characterized by comprising: if the opening change rate of the accelerator pedal of the range-extending vehicle is larger than the first opening change rate, determining the target power of the range extender according to the opening change rate of the accelerator pedal; and controlling the range extender to output the target power generation power within a preset duration.
2. The control method of the range-extending vehicle according to claim 1, wherein the determining the target power of the range extender according to the opening degree change rate of the accelerator pedal includes: and determining the target power generation power of the range extender according to the opening change rate of the accelerator pedal and the battery charge state of the power battery of the range extender vehicle, wherein the target power generation power of the range extender is inversely related to the battery charge state of the power battery.
3. The control method of the range-extending vehicle according to claim 1, wherein if the opening degree change rate of an accelerator pedal of the range-extending vehicle is larger than a first opening degree change rate, determining the target power of the range extender based on the opening degree change rate of the accelerator pedal, comprises: If the opening change rate of the accelerator pedal of the range-extending vehicle is larger than the first opening change rate and smaller than the second opening change rate, determining the target power generation of the range extender according to the opening change rate of the accelerator pedal; And if the opening change rate of the accelerator pedal of the range-extending vehicle is not smaller than the second opening change rate, determining that the target power generation of the range extender is zero.
4. The control method of the range-extending vehicle according to claim 1, characterized in that while the target generated power of the range extender is determined in accordance with the opening degree change rate of the accelerator pedal, the control method includes: Determining the required power of the extended range vehicle; after the control of the range extender to output the target generated power within a preset time period, the control method comprises the following steps: Determining a power change step length of the range extender according to the required power and the battery charge state of a power battery of the range extender vehicle, wherein the power change step length is inversely related to the battery charge state of the power battery; And controlling the generated power of the range extender to be increased according to the power change step length.
5. The control method of an extended-range vehicle according to claim 4, wherein the power change step is related to a difference between the required power and the current power.
6. The control method of the range-extending vehicle according to claim 4, wherein if the battery state of charge of the power battery is in a normal charge range, the control method includes, while controlling the increase of the generated power of the range extender in accordance with the power change step size: And controlling the output power of the power battery of the range-extending vehicle to be the difference value between the required power and the generated power of the range extender.
7. The control method of the range-extending vehicle according to claim 1, characterized in that while the target generated power of the range extender is determined in accordance with the opening degree change rate of the accelerator pedal, the control method includes: Determining the required power of the extended range vehicle; after the control of the range extender to output the target generated power within a preset time period, the control method comprises the following steps: if the battery charge state of the power battery of the extended-range vehicle is smaller than the minimum value of the normal charge amount interval and larger than the minimum allowable charge amount, and the required power is larger than the preset power, updating the required power to the preset power; determining a power change step length of the range extender according to the preset power and the battery charge state of a power battery of the range extender vehicle, wherein the power change step length is inversely related to the battery charge state of the power battery; And controlling the generated power of the range extender to be increased according to the power change step length.
8. The control method of the extended-range vehicle according to claim 7, wherein if the battery state of charge of the power battery is smaller than a minimum value of a normal charge interval and larger than a minimum allowable charge amount, and the required power is larger than a preset power, updating the required power to the preset power includes: If the state of charge of the battery is in an ascending trend, updating the required power to be a first preset power; and if the state of charge of the battery is in a descending trend, updating the required power to a second preset power, wherein the first preset power is larger than the second preset power.
9. A computer-readable storage medium, having stored thereon a program which, when executed by a processor, implements the control method of an extended-range vehicle according to any one of claims 1 to 8.
10. A control system of an extended range vehicle, comprising one or more processors for implementing the control method of an extended range vehicle according to any one of claims 1 to 8.
11. An extended-range vehicle, comprising: Range extender The control system of claim 10, in communication with the range extender.

Description

Control method and control system of range-extended vehicle and range-extended vehicle Technical Field The application relates to the technical field of vehicle emission control, in particular to a control method and a control system of an extended range vehicle and the extended range vehicle. Background With the development of society, the management of exhaust emissions of vehicles is becoming more and more strict. At present, most range-extending commercial vehicles use the engine and post-processing configuration of the passenger vehicle, and test data show that when the power of the range extender is very high or the range extender is rapidly switched to a high power point, the exhaust emission is deteriorated due to high exhaust flow and high temperature of the catalyst, so that the range-extending commercial vehicles do not meet the environmental protection requirements of the vehicles. Disclosure of Invention The application provides a control method and a control system of a range-extended vehicle and the range-extended vehicle, which can reduce exhaust emission. The application provides a control method of a range-extending vehicle, which comprises a range extender, and comprises the following steps: if the opening change rate of the accelerator pedal of the range-extending vehicle is larger than the first opening change rate, determining the target power of the range extender according to the opening change rate of the accelerator pedal; and controlling the range extender to output the target power generation power within a preset duration. In some embodiments, if the opening change rate of the accelerator pedal of the range-extending vehicle is greater than the first opening change rate, which indicates that the vehicle is in a rapid acceleration state, when the vehicle needs rapid acceleration, the target power generation of the range-extending device is controlled to be inversely related to the opening change rate of the accelerator pedal, and as the opening change rate of the accelerator pedal is increased, the target power generation of the range-extending device is reduced, so that the total power generation of the range-extending device is prevented from being too high, the exhaust emission of the vehicle caused by power generation of the range-extending device is reduced, and the environmental protection performance of the vehicle is improved. Optionally, the determining the target power of the range extender according to the opening change rate of the accelerator pedal includes: and determining the target power generation power of the range extender according to the opening change rate of the accelerator pedal and the battery charge state of the power battery of the range extender vehicle, wherein the target power generation power of the range extender is inversely related to the battery charge state of the power battery. In some embodiments, when the vehicle needs to accelerate suddenly, the target power generation power of the range extender is controlled to be inversely related to the battery charge state of the power battery, the more the residual electric quantity of the power battery is, the smaller the target power generation power of the range extender is, and when the more the residual electric quantity of the power battery is, the more the power generation power which can be provided by the power battery for the vehicle is indicated, at this time, the target power generation power of the range extender is controlled to be reduced, so that the exhaust emission of the vehicle caused by the power generation of the range extender can be reduced, and the environmental protection performance of the vehicle is improved. Optionally, if the opening rate of the accelerator pedal of the range-extending vehicle is greater than the first opening rate, determining the target power of the range extender according to the opening rate of the accelerator pedal includes: If the opening change rate of the accelerator pedal of the range-extending vehicle is larger than the first opening change rate and smaller than the second opening change rate, determining the target power generation of the range extender according to the opening change rate of the accelerator pedal; And if the opening change rate of the accelerator pedal of the range-extending vehicle is not smaller than the second opening change rate, determining that the target power generation of the range extender is zero. In some embodiments, if the opening rate of the accelerator pedal of the range-extending vehicle is not less than the second opening rate, it indicates that the opening rate of the accelerator pedal is too high, the acceleration required by the vehicle is too high, and the target power generation of the range extender is determined to be zero, so that the exhaust emission of the vehicle caused by power generation of the range extender can be limited, and the environmental protection performance of the vehicle is improved.