CN-121973753-A - Compensation method and device for extended range charging power and vehicle

CN121973753ACN 121973753 ACN121973753 ACN 121973753ACN-121973753-A

Abstract

The application relates to a compensation method and device for range-extending charging power and a vehicle. The method comprises the steps of starting from the accumulation starting time, accumulating the difference between the range-increasing charging power of the range extender and the driving power of the driving motor when the vehicle is in a preset acceleration state to obtain the current power accumulation difference of the vehicle, determining whether the current power accumulation difference meets preset compensation conditions and reaches the accumulation ending time, and compensating the current range-increasing charging power of the range extender according to the current power accumulation difference when the current power accumulation difference meets the preset compensation conditions and reaches the accumulation ending time. By adopting the method, when the range-extending charging power needs to be compensated, the current range-extending charging power can be timely and accurately compensated according to the accumulated difference of the current power, so that the range-extending charging power can be effectively compensated, and the cruising ability of the vehicle can be improved.

Inventors

YANG DONG
LI JUN
GONG DECHENG
WU YUDONG
Zhong Shuanglei
LI QING

Assignees

赛力斯汽车有限公司

Dates

Publication Date: 20260505
Application Date: 20260224

Claims (10)

1. A method of compensating for extended range charge power, the method comprising: Starting from the accumulation starting time, accumulating the difference between the range-extending charging power of the range extender and the driving power of the driving motor when the vehicle is in a preset acceleration state to obtain the current power accumulation difference of the vehicle; Determining whether the current power accumulation difference meets a preset compensation condition and whether the current power accumulation difference reaches an accumulation end time; and when the current power accumulation difference meets the preset compensation condition and reaches the accumulation end time, compensating the current range-extending charging power of the range extender according to the current power accumulation difference.
2. The method of claim 1, wherein the method of determining the cumulative start time comprises: or determining the moment when the vehicle enters the preset acceleration state for the first time as the accumulated starting moment; a method of determining the cumulative end time, comprising: And determining the moment when the current power accumulation difference meets the preset compensation condition as the accumulation end moment, or determining the moment when the current power accumulation difference is not in the preset acceleration state for the first time after the current power accumulation difference meets the preset compensation condition as the accumulation end moment.
3. The method of claim 1, wherein the method of determining that the vehicle is in a preset acceleration state comprises: And if the accelerator opening of the vehicle is larger than a preset opening threshold, determining that the vehicle is in a preset acceleration state, wherein the preset acceleration state comprises an operation of executing emergency acceleration by the vehicle or a continuous acceleration state of the vehicle.
4. A method according to any one of claims 1-3, wherein, from the integration start time, accumulating a difference between the range-extending charging power of the range extender and the driving power of the driving motor when the vehicle is in the preset acceleration state, to obtain a current power accumulation difference of the vehicle, and comprising: starting from the accumulated starting time, detecting whether the vehicle is in the preset acceleration state according to the accelerator opening of the vehicle; If the vehicle is in the preset acceleration state, determining the moment of the current running state in the preset acceleration state as acceleration moment, and obtaining the difference power between the range-extending charging power and the driving power of each acceleration moment; and summing the difference power between the extended-range charging power and the driving power at each acceleration moment to obtain the current power accumulation difference.
5. A method according to any one of claims 1-3, wherein said determining whether the current power accumulation delta meets a preset compensation condition comprises: Acquiring a power threshold corresponding to the total capacity of a battery pack on the vehicle; and determining whether the current power accumulation difference meets the preset compensation condition according to the power threshold and the current power accumulation difference.
6. The method of claim 5, wherein determining whether the current power accumulation delta meets the preset compensation condition based on the power threshold and the current power accumulation delta comprises: If the current power accumulation difference is larger than the power threshold, determining that the current power accumulation difference meets the preset compensation condition; And if the current power accumulation difference is not greater than the power threshold, determining that the current power accumulation difference does not meet the preset compensation condition.
7. The method of claim 5, wherein the method further comprises: Detecting a current vehicle speed of the vehicle; The determining whether the current power accumulation difference meets the preset compensation condition according to the power threshold and the current power accumulation difference comprises: Detecting whether the current power accumulation difference is larger than the power threshold value or not, and whether the current vehicle speed is larger than a preset vehicle speed threshold value or not; And if the current power accumulation difference is larger than the power threshold and the current vehicle speed is larger than the preset vehicle speed threshold, determining that the current power accumulation difference meets the preset compensation condition.
8. A method according to any one of claims 1-3, wherein said compensating the current range-extending charging power of the range extender according to the current power accumulation delta comprises: Determining a unit compensation amount according to the current power accumulation difference amount; And compensating the current range-extending charging power according to the unit compensation amount every preset time period.
9. A compensation device for extended range charging power, the device comprising: the accumulation module is used for accumulating the difference between the range-extending charging power of the range extender and the driving power of the driving motor when the vehicle is in a preset acceleration state from the accumulation starting time to obtain the current power accumulation difference of the vehicle; The determining module is used for determining whether the current power accumulation difference meets a preset compensation condition or not and whether the accumulation end time is reached or not; and the compensation module is used for compensating the current range-extending charging power of the range extender according to the current power accumulation difference when the current power accumulation difference meets the preset compensation condition and the accumulation end time is reached.
10. A vehicle comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any one of claims 1 to 8 when the computer program is executed.

Description

Compensation method and device for extended range charging power and vehicle Technical Field The application relates to the technical field of vehicle control, in particular to a compensation method and device for range-extending charging power and a vehicle. Background With the development of vehicle technology, new energy range-extending vehicles are developed, which are vehicles with a fuel engine (namely a range extender) added on the basis of pure electric vehicles, and can charge batteries in the vehicles through the range extender and supply power for driving motors through the batteries, so that wheels of the vehicles are driven through the driving motors. In the related art, the situation that the power of Cheng Chongdian of the range extender cannot keep up with the driving power consumed by the driving motor may occur, so that the range extender needs to compensate the charging power. Therefore, how to effectively compensate the extended-range charging power so as to improve the cruising ability of the vehicle becomes a technical problem to be solved in the technical field of vehicle control. Disclosure of Invention Based on the foregoing, it is necessary to provide a method and an apparatus for compensating extended-range charging power and a vehicle, which can effectively compensate the extended-range charging power to improve the cruising ability of the vehicle. In a first aspect, the present application provides a method for compensating extended-range charging power, including: Starting from the accumulation starting time, accumulating the difference between the range-extending charging power of the range extender and the driving power of the driving motor when the vehicle is in a preset acceleration state to obtain the current power accumulation difference of the vehicle; Determining whether the current power accumulation difference meets a preset compensation condition and whether the current power accumulation difference reaches an accumulation end time; and when the current power accumulation difference meets the preset compensation condition and reaches the accumulation end time, compensating the current range-extending charging power of the range extender according to the current power accumulation difference. In one embodiment, the method for determining the accumulated starting time includes: or determining the moment when the vehicle enters the preset acceleration state for the first time as the accumulated starting moment; a method of determining the cumulative end time, comprising: And determining the moment when the current power accumulation difference meets the preset compensation condition as the accumulation end moment, or determining the moment when the current power accumulation difference is not in the preset acceleration state for the first time after the current power accumulation difference meets the preset compensation condition as the accumulation end moment. In one embodiment, a method for determining that the vehicle is in a preset acceleration state includes: And if the accelerator opening of the vehicle is larger than a preset opening threshold, determining that the vehicle is in a preset acceleration state, wherein the preset acceleration state comprises an operation of executing emergency acceleration by the vehicle or a continuous acceleration state of the vehicle. In one embodiment, the accumulating the difference between the range-extending charging power of the range extender and the driving power of the driving motor when the vehicle is in the preset acceleration state from the accumulating start time to obtain the current power accumulating difference of the vehicle includes: starting from the accumulated starting time, detecting whether the vehicle is in the preset acceleration state according to the accelerator opening of the vehicle; If the vehicle is in the preset acceleration state, determining the moment of the current running state in the preset acceleration state as acceleration moment, and obtaining the difference power between the range-extending charging power and the driving power of each acceleration moment; and summing the difference power between the extended-range charging power and the driving power at each acceleration moment to obtain the current power accumulation difference. In one embodiment, the determining whether the current power accumulation delta meets a preset compensation condition includes: Acquiring a power threshold corresponding to the total capacity of a battery pack on the vehicle; and determining whether the current power accumulation difference meets the preset compensation condition according to the power threshold and the current power accumulation difference. In one embodiment, the determining whether the current power accumulation delta meets the preset compensation condition according to the power threshold and the current power accumulation delta includes: If the current power accumulation difference is larger th