Method for controlling starting torque of electric vehicle

A torque control, electric vehicle technology, applied in electric vehicles, control drive, power management, etc., can solve problems such as noise and vibration

Active Publication Date: 2010-09-08
奇瑞新能源汽车股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The invention designs a starting torque control method for an electric vehicle. The technical problem it solves is that there is a gap between the power transmission gears of the electric vehicle, and the transmission shaft has certain flexibility. noise and vibration

Method used

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  • Method for controlling starting torque of electric vehicle
  • Method for controlling starting torque of electric vehicle
  • Method for controlling starting torque of electric vehicle

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Embodiment Construction

[0028] Combine below figure 1 and figure 2 , the present invention is further described:

[0029] like figure 1 As shown, a starting torque control method of an electric vehicle comprises the following steps:

[0030] In step 20, the vehicle controller detects whether the current electric drive system is ready, and if it is ready, proceed to step 21, otherwise stop the logical operation;

[0031] In step 21, the vehicle controller judges whether the current vehicle speed is lower than a certain value, if it is established, then enters in step 22, if it is not established, then terminate this logic operation;

[0032] In step 22, it is judged whether the rotational speed of the motor is lower than a certain value, that is, it is judged whether the current vehicle is in the start-up stage, and if it is established, it enters in step 23, otherwise, the logic operation is terminated;

[0033] In step 23, it is judged whether the current gear position request is a D file, if i...

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Abstract

The invention relates to a method for controlling a starting torque of an electric vehicle. The method comprises the following steps of: in a step 20, detecting whether a current electric drive system is all set by using a finished vehicle controller; in a step 21, judging whether the current vehicle speed is lower than a fixed value by using the finished vehicle controller; in a step 22, judging whether a motor rotating speed is lower than a fixed value, namely judging whether the current finished vehicle is in a starting stage; in a step 23, judging whether a current gear request is a D gear or an R gear; in a step 25, starting a timer T; in a step 26, calculating a motor rotating speed-based request torque Tq1; in a step 27, judging whether the timer T is finished, if the timer is not finished, returning to the step 26 to continue timing; if the timer is finished, entering a step 28; in the step 28, calculating a driver accelerator pedal-based request torque Tq2; and in the step 29, comparing the Tq2 with the Tq2, wherein the smaller value of the Tq1 and the Tq2 is a final starting torque request value.

Description

technical field [0001] The invention relates to a control method in the field of electric vehicle control, in particular to a control method for the starting torque of an electric vehicle, which can realize the control of the starting torque of the electric vehicle. Background technique [0002] Energy crisis and environmental degradation have become important factors restricting global development. Research on energy-saving and environmentally friendly vehicles is one of the effective means to alleviate energy pressure and reduce environmental pollution. Compared with traditional internal combustion locomotives or hybrid vehicles, electric vehicles are driven by pure electricity, which can reduce emissions and reduce energy consumption. [0003] Compared with traditional vehicles, the typical differences of pure electric vehicles (EV) are: [0004] 1. The motor is the driving power source of the vehicle, which can realize the forward and reverse of the vehicle; [0005] 2...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L15/20
CPCY02T10/72
Inventor 杨上东
Owner 奇瑞新能源汽车股份有限公司
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