Dynamic wireless power supply segmented type guide rail switching system using radio frequency position detection system and method thereof

Abstract

The invention relates to a dynamic wireless power supply segmented guide rail switching system using a radio frequency position detection system and a method thereof, wherein the system comprises a radio frequency transmitting module, a directional board-mounted antenna, a radio frequency receiving module, a dynamic wireless power supply guide rail, a relay device and a main control unit. When a vehicle is about to drive into the dynamic wireless power supply guide rail, the radio frequency receiving module at the front end of the guide rail captures the directional 2.4GHz radio frequency signal sent by the radio frequency transmitting module in the vehicle. The radio frequency signal is transmitted to the main control unit through a serial port module to enable the vehicle to communicatewith the main control unit, acquire and upload information such as vehicle ID and the like, send a signal to enable the relay device to respond quickly, and the section of the power supply guide railis electrified to work. When the vehicle runs out of the previous section of the guide rail and then runs towards the next section of the guide rail, when the receiving module of the next section of the guide rail receives the radio frequency signal and transmits the radio frequency signal to the main control unit, the main control unit can quickly judge that the power supply guide rail in front of the vehicle is opened in advance and the guide rail which completes the charging task is closed.

Description

technical field [0001] The invention relates to the technical field of dynamic wireless power supply for electric vehicles, and relates to a segmented guide rail switching system and method for controlling dynamic wireless power supply by using a radio frequency position detection system. Background technique [0002] Electric vehicles rely on dynamic wireless charging technology to drive on specially laid power supply rails, and charge continuously during driving, which provides an important solution to solve the bottleneck problem of power batteries. In order to reduce the coil loss and magnetic field leakage level, the dynamic wireless power supply rail often adopts a segmented layout structure. [0003] In consideration of solving energy problems, environmental problems, and improving the working capacity and efficiency of electric vehicles, the charging guide rail cannot be powered on when there are no vehicles on the road, but an intelligent vehicle position detection ...

AI Technical Summary

Problems solved by technology

However, when the positioning method based on the ground induction coil is actually applied to the position detection of the dynamic wireless power supply system of electric vehicles, since the application frequency range of the ground induction coil is about 20kHz-170kHz and the resonant frequency of the dynamic wireless charging magnetic coupling mechanism is very close, if the ground When the distance between the sensing coil and the transmitting coil of the power supply rail is too close, the strong magnetic field generated by the transmitting coil in the power supply rail will often cause serious interference to the detection accuracy and even easily burn out the ground sensing coil, causing greater damage to the position detection system

[0007] To sum up, the commonly used vehicle position detection methods will show many disadvantages when applied to the dynamic wireless power supply system of electric vehicles, such as low recognition in high-speed environments, poor penetration to the road surface, and easy to be interfered by the strong magnetic field of the power supply rail. Wait

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