Pure electric vehicle drive antiskid system and control method

A pure electric vehicle and control method technology, applied in the field of pure electric vehicle drive anti-skid system and control, can solve the problems of complex anti-skid structure and high cost, and achieve the effect of less control modules, short development cycle and fast torque response

Active Publication Date: 2019-05-24
奇瑞新能源汽车股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention designs a pure electric vehicle drive anti-skid system and a control method, which solves the problems of complex drive anti-skid structure and high cost of the existing pure electric vehicle

Method used

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  • Pure electric vehicle drive antiskid system and control method
  • Pure electric vehicle drive antiskid system and control method

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Embodiment Construction

[0021] Below in conjunction with accompanying drawing, the present invention will be further described:

[0022] figure 1 It shows a pure electric vehicle drive anti-skid system, including an MCU integrated drive controller, a drive motor, and a wheel speed detection device; the functions of the MCU integrated drive controller include the main functions of a vehicle controller and a motor controller of a pure electric vehicle Its functions include vehicle gear position control, driving power calculation and arbitration, motor drive control, high and low voltage accessories control, high voltage power distribution, energy recovery control and mileage calculation, etc.; the wheel speed detection device is set in on the wheels of pure electric vehicles, and communicate with the MCU integrated drive controller; specifically, the wheel speed detection device is connected to the MCU integrated drive controller through a hard line, which has the characteristics of fast transmission s...

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Abstract

The invention relates to a pure electric vehicle drive antiskid system and control method. The system comprises an MCU (micro-control unit) integrated drive controller, a drive motor and a wheel speeddetection device, wherein the wheel speed detection device is arranged on a wheel and in communication connection with the MCU integrated drive controller, the drive motor is in communication connection with the MCU integrated drive controller and used for driving the wheel, the wheel speed detection device is used for detecting the wheel speed and/or accelerated speed of the wheel and transmitting the speed to the MCU integrated drive controller, the MCU integrated drive controller receives the wheel speed and/or accelerated speed, calculates slip rate and triggers an drive antiskid functionwhen the slip rate or accelerated speed exceeds a threshold, and the torque of the drive motor is adjusted to ensure the overall dynamic property of a vehicle. control modules are fewer, reliabilityis high, a TCS (traction control system) function can be achieved without an ESP (electronic stability program) module, development period is short, and hardware and software cost is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of pure electric vehicles, and in particular relates to a pure electric vehicle drive anti-skid system and a control method. Background technique [0002] The traditional drive anti-slip control function (TCS) of existing electric vehicles is based on the ESP system. The body electronic stability (ESP) system judges the slipping state of the vehicle and calculates the torque after the TCS function intervenes, and sends the requested torque to the whole vehicle through the CAN network. Vehicle controller (VCU), the VCU judges the current vehicle state and then arbitrates the torque, and then the VCU sends the arbitrated torque to the motor controller (MCU), and the MCU controls the motor to execute the torque requested by the VCU and feeds back the actual torque To the ESP control system, the ESP control system makes further judgments and calculations based on the vehicle slipping state and the actual torque ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L15/20B60W10/08B60W40/00
CPCY02T10/72
Inventor 章友京肖小城孔令静王春丽沙文瀚刘琳梁长飞薛斌盛亚楠
Owner 奇瑞新能源汽车股份有限公司
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