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Handling method for communication faults of electric automobile braking system

A technology for electric vehicles and communication failures, applied in electric braking systems, electric vehicles, electric vehicle charging technology, etc. System instability, etc.

Active Publication Date: 2014-05-21
重庆长安新能源汽车科技有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

When the motor system performs regenerative braking feedback, once the braking system fails, the actual output braking torque will not meet the required braking torque, which will seriously affect the safety of passengers, pedestrians and vehicles
Therefore, it is a technical problem to be solved by those skilled in the art to avoid the instability of the braking system when the communication failure occurs in the braking system, which will affect the safety of passengers, pedestrians and vehicles.

Method used

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  • Handling method for communication faults of electric automobile braking system
  • Handling method for communication faults of electric automobile braking system

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings. It should be noted that the examples described here are only used for illustration, and are not intended to limit the present invention.

[0023] Such as figure 1 As shown, the electric vehicle braking control system consists of three parts: vehicle controller, motor system, and electronic stability system, and CAN communication is used between the three parts.

[0024] Among them, the motor system is responsible for calculating the maximum available regenerative braking torque of the motor and feeding it back to the vehicle controller, while performing regenerative energy recovery.

[0025] The vehicle controller is responsible for detecting the vehicle speed signal, receiving the allowable charging power of the battery, the maximum available regenerative braking torque of the motor, the motor speed signal, etc., and calculating the available regenerative braking torqu...

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Abstract

The invention provides a handling method for communication faults of an electric automobile braking system. The electric automobile braking system comprises an overall automobile controller, a motor system and an electric stable control system, and a CAN communication mode is adopted among the three parts. The handling method includes the step that when the communication faults happen on the overall automobile controller, the motor system and the electric stable control system of an electric automobile, the method that braking torque is stably kept is adopted, so that influence on passengers, passersby and vehicles by the communication faults of the braking system is effectively avoided.

Description

technical field [0001] The invention belongs to the technical field of electric vehicles, and in particular relates to a communication fault processing method for a brake system of an electric vehicle with an electronic stability system. Background technique [0002] In the 21st century, the global climate is gradually warming, oil prices are rising, and oil resources are exhausted. Energy-saving and low-carbon travel has gradually become the consensus of people. Electric vehicles are mainly driven by electric energy and have no pollutant emissions. The development of electric vehicles has become a new direction for energy conservation and emission reduction. The safe and reliable operation of electric vehicles is related to the safety of every car user. [0003] At present, electric vehicles are limited by the low energy density of batteries and the short driving range of the whole vehicle, which greatly restricts the promotion and application of electric vehicles. In orde...

Claims

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Application Information

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IPC IPC(8): B60L7/00B60L7/18
CPCY02T90/16
Inventor 万艳宽冯超张辉
Owner 重庆长安新能源汽车科技有限公司
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