Electric vehicle wireless charging alignment system and method based on Bluetooth beacon

Abstract

The invention discloses an electric vehicle wireless charging alignment system and method based on a Bluetooth beacon, and the system comprises a main control unit, a ground control unit which is in communication connection with the main control unit, a receiving coil and the Bluetooth beacon which are disposed on a to-be-charged vehicle, and a transmitting coil and communication receiver swhich are disposed at a parking lot. The communication receivers comprise a first group of communication receivers, a second group of communication receivers and a third group of communication receivers, wherein the first group of communication receivers and the second group of communication receivers are located in the left side and the right side of the to-be-charged automobile respectively, and thethird group of communication receivers is arranged in front of an electric vehicle to be charged. The charging alignment system is simple and high in applicability, the position of the receiving coil ispositioned through the Bluetooth beacon, the difference of fixed mounting positions caused by different brands and different vehicle types is avoided, and the problem caused by abnormal displacement of the receiving coil due to reasons is also avoided.

Description

technical field [0001] The invention relates to the technical field of wireless charging, in particular to a wireless charging alignment system and method for electric vehicles based on Bluetooth beacons. Background technique [0002] Wireless charging has the advantages of convenient charging, high safety, long service life, and perfect automation. It is one of the important development directions of electric vehicle charging technology. Wireless charging of electric vehicles usually uses the transmitting coil on the ground side and the receiving coil on the vehicle side to realize the non-contact transmission of electric energy through the principle of magnetic coupling (electromagnetic induction or electromagnetic resonance), and to charge the power battery of the electric vehicle. Based on the basic principle of electromagnetic coupling, the relative position of the transmitting coil and receiving coil will have a great influence on the coupling coefficient. When the tr...

AI Technical Summary

Problems solved by technology

The alignment system currently has the following problems: 1) There are many types of car brands and models. Although the installation positions of the receiving coils of the same brand models are the same, the relative positions of different models may not be the same. Some systems do not add a model identification system to realize the differences in reality. 2) Even if some alignment systems are added to the car attribute database screening, the workload and cost are too cumbersome and costly for the realization of the system; 3) When the car moves at high speed for a long time, it is difficult to ensure whether the relative position of the receiving coil is correct or not. There is a low stroke displacement, and it is difficult for the control system to guarantee the accuracy through the positioning of the upper layer parameters; 4) The existing system is mostly idealized without considering the closed loop, and does not detect whether there is an alignment failure caused by the sensor being interfered or blocked in reality

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