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Control method for driving torque of pure electric vehicle

A pure electric vehicle, drive torque technology, applied in the direction of electric vehicles, control drives, control devices, etc., can solve the problems of driver safety threats and high vehicle driving risks, so as to reduce safety threats, avoid shifting shocks, reduce The effect of driving hazard

Active Publication Date: 2021-04-13
重庆长安新能源汽车科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Since the pure electric vehicle uses the electric motor as the power source, it has strong acceleration performance, and the acceleration time from 100 kilometers is generally within 10s, or even within 5s. When the controller software data overflows, unexpected driving torque may be generated. It leads to a large unexpected acceleration in a short period of time, resulting in a high risk of vehicle driving, which in turn poses a great threat to the safety of the driver

Method used

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  • Control method for driving torque of pure electric vehicle
  • Control method for driving torque of pure electric vehicle
  • Control method for driving torque of pure electric vehicle

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Embodiment Construction

[0029] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0030] Such as Figure 2 to Figure 7 As shown, the control method of the driving torque of the pure electric vehicle is executed by the controller (such as the vehicle controller VCU), and the control method includes:

[0031] The first step is to obtain the gear position status, driver demand torque, vehicle speed, chassis torque intervention function activation flag (chassis torque intervention function activation flag can reflect whether the chassis torque intervention function is activated) and speed limit function activation flag (speed limit The function activation flag can reflect whether the speed limit function is activated), and then execute the second step; the chassis torque intervention function can be in the body electronic stability system ESP, traction control system TCS, anti-lock braking system ABS, automatic emergency braking system AEB one or mor...

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Abstract

The invention discloses acontrol method for the driving torque of a pure electric vehicle. The driving torque is limited according to the gear condition of a vehicle, the driver demand torque, the vehicle speed, the chassis torque intervention function activation condition and the speed limiting function activation condition, generation of large unexpected acceleration when controller software data overflows is avoided, the vehicle driving risk is reduced, and the safety threat to a driver is reduced.

Description

technical field [0001] The invention belongs to the technical field of pure electric vehicles, and in particular relates to a method for controlling driving torque of pure electric vehicles. Background technique [0002] Since the pure electric vehicle uses the electric motor as the power source, it has strong acceleration performance, and the acceleration time from 100 kilometers is generally within 10s, or even within 5s. When the controller software data overflows, unexpected driving torque may be generated. It leads to a large unexpected acceleration in a short period of time, resulting in a high risk of vehicle driving, which in turn poses a great threat to the driver's safety. Contents of the invention [0003] The purpose of the present invention is to provide a method for controlling the driving torque of a pure electric vehicle, so as to limit the driving torque and reduce the safety threat to the driver. [0004] The control method of the driving torque of the p...

Claims

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Application Information

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IPC IPC(8): B60L15/20
CPCB60L15/20B60L2240/423Y02T10/72
Inventor 陈才勇杨官龙
Owner 重庆长安新能源汽车科技有限公司
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