Charging device position detecting method based on wireless charging

Abstract

The invention discloses a charging device position detecting method based on wireless charging. The method comprises: S1, a charging mechanism waits and determines whether a first sensing signal comesin a non-working state; S2, outputting a first excitation signal to activate the charging mechanism; S3, an induced current of an induction coil is obtained; S4, the obtained induced current value iscompared with a preset induced current to determine whether the induced current of the part of induction coil changes obviously; and S5, an area formed by the induction coil with the obvious inductedcurrent changing is used as a location area of a charging device, a second excitation signal is outputted, and thus a charging transmitting unit in the location area works and a charging transmittingunit outside the location area is turned off, so that the charging mechanism enters a charging state. The method has the following advantages: intermittent starting of a charging mechanism for accessdetection of a charging device is avoided; and thus the service life of the wireless charger is prolonged.

Description

technical field [0001] The invention belongs to the technical field of charging, and in particular relates to a method for detecting the position of a charging device based on wireless charging. Background technique [0002] Wireless charging is actually a device that uses the principle of electromagnetic induction for charging. Similar to a transformer, there is a coil at the sending and receiving ends. The coil at the sending end is connected to a wired power supply to generate an electromagnetic signal, and the coil at the receiving end induces the electromagnetic signal at the sending end to generate current. To electrical equipment. like Image 6 As shown, the current flowing through the coil will generate a magnetic field, and other non-energized coils will generate current when they are close to the magnetic field. Wireless charging applies this physical phenomenon. [0003] In the prior art, the wireless charging structure includes a circuit board, a magnetic board,...

AI Technical Summary

Problems solved by technology

[0005] 1. The actual effective charging area of ​​the charging equipment remains unchanged, resulting in an increase in ineffective energy consumption and virtually reducing the charging efficiency

[0006] 2. It is necessary to turn on the coil of the charging terminal at least intermittently to realize the detection of the charging device, which increases the working pressure of the driving circuit and affects the life of the wireless charger.

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