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Pure electric automobile movement control method

A pure electric vehicle, motion control technology, applied in electric vehicles, control drive, power management, etc., can solve the problem that the power system of the whole vehicle cannot work, achieve filtering of high-frequency fluctuations, consistent operation, and increase time lag Effect

Active Publication Date: 2012-05-02
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the motion control method of pure electric vehicles, it is necessary to coordinate the driving method, braking method, and working mode of the system, and at the same time do a good job in strong current control and fault protection, otherwise the vehicle power system cannot work well

Method used

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  • Pure electric automobile movement control method

Examples

Experimental program
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Embodiment Construction

[0058] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0059] Such as figure 1 As shown, in a pure electric vehicle power system driven by a single motor, the power battery pack includes a battery management system and a battery pack (including insurance), and the high-voltage output line of the battery pack is input to the battery management system, and then output to the motor through a high-voltage relay. The entry of the controller. The motor controller drives the drive motor with the reduction gear to drive the vehicle.

[0060] The main auxiliary components of the pure electric vehicle power system include DC / DC, electric air conditioner, cooling water pump, cooling fan, and electric heater. The electric power steering system and ABS still use the original car system.

[0061] The vehicle controller and the battery management system, and the motor controller realize information interaction...

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PUM

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Abstract

A pure electric automobile movement control method is characterized by comprising driving control, braking control and working mode control. The driving control method comprises the steps of: obtaining a target driving torque of a motor by regarding an aperture signal of an accelerator pedal and a motor rotating speed signal as an input; and then correcting the target driving torque of the motor according to a battery charge state, a battery current and a bus voltage fed back by a control area network (CAN) bus. The braking control method comprises the steps of: obtaining a target braking torque according to the braking pedal signal and the motor rotating speed signal; and then correcting the target braking torque of the motor according to the battery charge state, a battery current signal and a battery voltage signal fed back by the CAN bus. The working mode control method comprises the steps of: determining by combining current state of the motor according to a gear signal acquired by a whole automobile controller; and sending the motor target torque and the motor target working mode to the CAN bus by the whole automobile controller to control the movement of the automobile.

Description

technical field [0001] The invention relates to a motion control method of a pure electric vehicle. Background technique [0002] Pure electric vehicles have the characteristics of zero emissions, low power consumption costs, and quiet driving, and are considered to be an important way to solve current motor vehicle emissions and reduce vehicle usage costs. At present, both at home and abroad attach great importance to the research and development of pure electric vehicles, and a variety of products have been launched. [0003] In pure electric vehicles, the vehicle control system determines the comfort and convenience for the driver to control the electric vehicle; replaces part of the control functions of the traditional vehicle power system; completes the refined management of electric auxiliary components. Among them, the vehicle motion control method is the soul and core of the vehicle control system, and a perfect vehicle motion control method is a prerequisite for th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L15/20B60L15/10
CPCY02T10/72
Inventor 曹桂军王丽芳廖承林张志刚
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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