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A method for controlling driving torque of pure electric vehicle

A pure electric vehicle, driving torque technology, applied in electric vehicles, control drives, control devices, etc., can solve the problems of driver safety threats and high vehicle driving danger, and achieve the effect of reducing safety threats and driving danger.

Active Publication Date: 2022-08-02
深蓝汽车科技有限公司
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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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  • A method for controlling driving torque of pure electric vehicle
  • A method for controlling driving torque of pure electric vehicle
  • A method for controlling driving torque of pure electric vehicle

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Embodiment Construction

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

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

[0031] The first step is to obtain gear 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 function activation flag) The function activation flag can reflect whether the speed limit function is activated), and then perform the second step; the chassis torque intervention function can be the body electronic stability system ESP, the traction control system TCS, the anti-lock braking system ABS, and the automatic emergency braking syste...

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Abstract

The invention discloses a method for controlling the driving torque of a pure electric vehicle, which limits the driving torque according to the gear position of the vehicle, the torque demanded by the driver, the vehicle speed, the activation of the chassis torque intervention function and the activation of the speed limit function. , which can avoid a large unexpected acceleration when the controller software data overflows, thereby reducing the driving danger of the vehicle and reducing the safety threat to the driver.

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 pure electric vehicles use electric motors as power sources, they have strong acceleration performance. The acceleration time to 100 kilometers is generally within 10s, or even within 5s. When the controller software data overflows, unexpected driving torque may be generated. This results in 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. SUMMARY 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 method for controlling the driving torque of a pur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L15/20
CPCB60L15/20B60L2240/423Y02T10/72
Inventor 陈才勇杨官龙
Owner 深蓝汽车科技有限公司
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