Motor rotor locking-based anti-theft device for electric motor car and anti-theft method for anti-theft device

Abstract

The invention discloses a motor rotor locking-based anti-theft device for an electric motor car and an anti-theft method for the anti-theft device. The anti-theft device for the electric motor car mainly comprises a current sensor and a controller, wherein an input end of the current sensor is connected to one phase of winding of three-phase windings of a stator of a brushless direct current motor for the electric motor car; an output end of the current sensor is connected to the input end of the controller to form a current closed-loop system; the output end of the controller is connected to a control input end of a three-phase bridge-type inverter of the electric motor car; and the output end of the controller outputs a PWM signal. According to the anti-theft method, with an actual current value measured by the current sensor as a feedback value, output of the three-phase bridge-type inverter is controlled through the controller; and a rotor is positioned to the corresponding phase of winding of the stator to lock the electric motor car, so that the anti-theft target is achieved.

Description

technical field [0001] The invention belongs to the field of electric vehicle anti-theft technology, and in particular relates to an electric vehicle anti-theft device based on motor rotor locking and an anti-theft method thereof. Background technique [0002] With the development of society and the continuous increase of fuel vehicles, the shortage of natural resources such as petroleum fuels and the global warming caused by fuel emissions have become increasingly prominent. Therefore, in this context, hybrid or pure power vehicles have gradually entered people's lives, and electric vehicles have emerged as the times require. Electric vehicles are deeply loved by consumers because of their environmental protection, fast and convenient features. In recent years, the electric vehicle market has developed rapidly. Up to now, the number of domestic electric vehicles has exceeded 60 million. Advanced electric vehicle anti-theft technology is a prerequisite for ensuring the safe...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the disadvantages of traditional electric vehicle anti-theft device and its anti-theft method, such as high cost and high misjudgment rate, and provide a new electric vehicle anti-theft device and its anti-theft method based on motor rotor locking

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