Electric vehicle power output control method and system

A technology of power output control and electric vehicles, applied in the direction of electric vehicles, control drives, vehicle components, etc., can solve the problems of not being able to maximize the use of power battery power, and achieve the effect of improving driving experience

Inactive Publication Date: 2019-12-31
BEIJING BORGWARD AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For this reason, the technical problem to be solved by the present invention is that the prior art cannot maximize the utilization of the power of the power battery, so a method and system for controlling the power output of electric vehicles are proposed to solve this problem

Method used

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  • Electric vehicle power output control method and system
  • Electric vehicle power output control method and system
  • Electric vehicle power output control method and system

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Embodiment 1

[0049] The invention provides a method for controlling the power output of an electric vehicle, the flow chart of which is as follows figure 1 As shown, the method includes the following steps:

[0050] S1. Identify the driving intention of the driver, and determine whether the electric vehicle needs to enter a peak power usage mode.

[0051] First, it is judged whether the current vehicle satisfies the conditions for entering the peak power usage mode. Such as vehicle failure status, battery SOC status, etc., only when the vehicle status and battery status allow, can enter the peak power usage mode. In addition, it may also include detecting whether the sport mode of the electric vehicle is turned on; only when the sport mode is turned on, can it be determined that the electric car needs to enter the peak power usage mode.

[0052] If the above-mentioned conditions for entering the peak power usage mode are met, the accelerator pedal signal of the electric vehicle is detect...

Embodiment 2

[0066] This embodiment provides an electric vehicle power output control system, the structural block diagram is as follows Figure 5 shown, including:

[0067] Judging unit 01, identifying the driving intention of the driver, and judging whether the electric vehicle needs to enter the peak power usage mode;

[0068] The peak power output unit 02, if so, performs peak power output according to the maximum pulse peak power table of the electric vehicle power battery, and estimates the remaining time for the power battery to continue to provide the peak power;

[0069] The real-time monitoring unit 03 acquires the driver's driving intention and the power output by the vehicle in real time;

[0070] The remaining time calculation unit 04 updates the remaining time that the power battery can continue to provide the peak power as time changes;

[0071] The protection processing unit 05, when the remaining time of the peak power is less than the set time threshold, if it remains i...

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Abstract

The invention provides a power output control method of an electric car. The method comprises the following steps: determining whether to operate the electric car to enter a peak power use mode; if the electric car enters the peak power use mode, outputting power according to a maximum pulse peak power sheet of a power battery of the electric car; estimating the remaining time that the power battery can supply the peak power; outputting different peak power based on different depth of an accelerator pedal, and updating the remaining time; entering a protecting mode in case of insufficient time, and then smoothly entering a normal working mode; in addition, when a driver controls the car to exit the peak power use mode, the electric car also enters the normal working mode. According to the method, the power is output based on the peak power of the power battery when the electric car needs the output of the maximum power, thus the power of the power battery can be utilized to the maximum, and moreover, the requirement of outputting the maximum power of the electric car can be fully met, and as a result, the driving experience of the electric car driver can be increased, and the power can be stably output.

Description

technical field [0001] The invention relates to the field of electric vehicles, in particular to an electric vehicle power output control method and system. Background technique [0002] As a product of the large-scale industry in modern society that promotes the leap forward of human civilization, automobiles not only bring convenience and comfort to human life, but also have an inescapable responsibility for the deterioration of the natural ecological environment. For the sustainable development of the automobile industry, the "green car" project, which mainly focuses on the development and promotion of electric vehicles and various alternative fuel vehicles, has been launched worldwide. The world's major automobile companies are scrambling to study various new pollution-free and environmentally friendly vehicles, trying to make their own vehicles reach or approach the "zero pollution" standard. Due to the increasingly serious environmental problems, the governments of va...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L15/00
Inventor 闫丽娟赵祥日
Owner BEIJING BORGWARD AUTOMOBILE CO LTD
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