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Automobile ramp auxiliary system and control method thereof

An auxiliary system and car ramp technology, which is applied to electric vehicles, control drives, vehicle components, etc., can solve the problems of vehicles slipping backwards, burning motor controllers, motor stalls, etc., and achieve the effect of preventing ramps from slipping

Active Publication Date: 2014-06-25
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

During normal driving uphill, there may be insufficient power, which may cause the vehicle to slip backwards, and the motor may be blocked due to high-power discharge, which may cause the motor controller to burn out, etc.

Method used

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  • Automobile ramp auxiliary system and control method thereof
  • Automobile ramp auxiliary system and control method thereof

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Embodiment Construction

[0027] The present invention will be described in detail below according to the accompanying drawings, which is a preferred embodiment among various implementations of the present invention.

[0028] The basic principle of the present invention is: set the function as an external button type, and decide whether to implement the function after the driver sends a request, and at the same time, the vehicle controller judges the current vehicle state information. The example includes the following steps: ①The driver sends a request signal, which requires the intervention of this function. ③Judging whether the current vehicle status is uphill, ②After the current uphill status, by comparing the current vehicle speed with the target vehicle speed, it can be judged whether the current vehicle running status is uphill start / reversing status or uphill driving status;③ If it is in the uphill start / backward slip state, the creep torque value is adjusted by calculating the vehicle status i...

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PUM

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Abstract

The invention relates to an automobile ramp auxiliary system and a control method of the automobile ramp auxiliary system. The ramp auxiliary function is requested by a driver, so that information such as the inclination angle of a whole automobile, the current automobile speed, the target automobile speed, gears, parking, an accelerator, a brake and a motor is collected simultaneously, the uphill starting state or the uphill travelling state is judged, after the current state is determined, the starting worm torque and the uphill torque are adjusted, under the condition that an automobile starts to travel uphill without parking, during the period from the motion that a brake pedal is released to the motion that the accelerator is trodden, the automobile is at least kept balanced and prevented from sliding on a ramp.

Description

technical field [0001] The invention relates to the field of control of pure electric vehicles, in particular to the slope auxiliary control of pure electric vehicles using a permanent magnet synchronous motor as a driving motor, preventing the vehicle from sliding downhill, so as to achieve the assistance of starting on a slope and driving on a slope. Background technique [0002] On specific occasions such as parking lot ramps and mountain ramps, frequent start and stop may be required. In order to prevent the vehicle from slipping backwards, a ramp assist system is needed. Pure electric vehicles are powered entirely by on-board power batteries, and use controllers such as vehicle controllers, motor controllers, and battery management systems. The electrical energy is converted into mechanical energy by driving the motor to drive the wheels forward. At present, the driving motors mainly include DC motors, permanent magnet synchronous motors, switched reluctance motors, an...

Claims

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Application Information

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IPC IPC(8): B60L15/20
CPCY02T10/72
Inventor 刘燕笛李波胡会永张飞
Owner 奇瑞新能源汽车股份有限公司
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