Wireless power transmission transmit-receive coil relative position detection device and method

Abstract

The invention discloses a wireless power transmission transmit-receive coil relative position detection device and method. The detection device comprises a power transmitting inductance coil, a power receiving inductance coil, sampling inductance coils, a sampling circuit, a charging management system and a human-computer interaction interface. The power transmitting inductance coil and the power receiving inductance coil are physically connected. There are at least three sampling inductance coils which are fixed around the power receiving inductance coil according to the positions of polygon vertices. The sampling inductance coils are electrically connected with the sampling circuit. The sampling circuit is electrically connected with the charging management system. The charging management system is electrically connected with the human-computer interaction interface. When the power transmitting inductance coil and the power receiving inductance coil are coaxial, the power transmitting inductance coil, the power receiving inductance coil and the sampling inductance coils are symmetrically arranged with the power transmitting inductance coil acting as the axis. Therefore, the power transmitting and receiving inductance coils are enabled to be accurately aligned so that the utilization rate of power energy can be enhanced.

Description

technical field [0001] The invention relates to the field of wireless power transmission, in particular to a device and method for detecting the relative position of a transceiver coil for wireless power transmission. Background technique [0002] Wireless power supply technology supplies power in a non-physical contact manner. With the maturity of this technology, it has attracted more and more attention from people and recognized by the society, which greatly facilitates the use of wireless products. The current electromagnetic resonance or electromagnetic induction wireless power transmission equipment mainly uses the inductance coil as the antenna for energy transmission and reception; however, before power transmission, the power transmitting and receiving inductance coils of the transmitting device and the receiving device need an effective relative position to reduce Energy dissipation to ensure the efficiency of power transmission; usually, the planes of the inductan...

AI Technical Summary

Problems solved by technology

[0004] The power transmitting inductance coil of the power transmitting device is set in the car charging area on the ground; the power receiving device is installed on the car, connected to the car battery charging management system, and the power receiving inductance coil is set at the bottom of the car; when the car needs to be charged, drive into the charging area , in the absence of a positioning detection device, the driver can only judge the position of the power transmitting inductor by visual inspection, and cannot accurately align the power transmitting inductor and the power receiving inductor

[0005] To sum up, there is an urgent need in this technical field for a device and method for detecting the relative position of the transmitting and receiving coils for wireless power transmission, so as to overcome the defect that the power transmitting and receiving inductive coils cannot be aligned accurately, and reduce the waste and loss of power energy as much as possible

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