Wireless power supply device and control method thereof

A wireless power supply and control method technology, applied in the direction of circuit devices, electrical components, etc., to achieve the effects of improving recognition efficiency and accuracy, improving safety, and improving anti-interference ability
CN110289702BActive Publication Date: 2020-09-11青岛帕沃思智能科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
青岛帕沃思智能科技有限公司
Publication Date
2020-09-11

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Abstract

The invention provides a wireless power supply device and a control method thereof. The control method of the wireless power supply device includes: driving the electromagnetic resonance circuit of the wireless power supply device to send a detection signal; acquiring the sensing signal sensed by the feedback sensing circuit of the wireless power supply device within a set time range after the detection signal is transmitted, and Extract the signal characteristics of the sensing signal. The signal characteristics include the number of peaks of the sensing signal and the time interval between the peaks; determine whether the signal characteristics are consistent with the characteristics of the preset feedback signal of the wireless power receiving device. The characteristics of the feedback signal are based on the wireless power receiving device. The powered device sends a feedback signal in response to the detection signal for setting; if so, the electromagnetic resonance circuit is driven to send a magnetic field energy signal to output electrical energy. With the solution of the present invention, the identification process is simple and efficient, the anti-interference ability is greatly improved, and the identification efficiency and accuracy are also greatly improved.
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Description

technical field

[0001] The present invention relates to wireless power supply technology, in particular to a wireless power supply device and a control method thereof. Background technique

[0002] Wireless power supply technology is based on the principle of "electromagnetic induction", which transmits electrical energy to electrical loads at close range without contact. It is often used for wireless charging of portable electronic devices (such as mobile terminals, digital cameras, music players, portable power supplies, etc.). The wireless power supply system is divided into a power supply end and a power receiving end, and there is no physical connection between the power supply end and the power receiving end. The power supply end converts high-frequency alternating current using a power conversion device. The high-frequency alternating current generates a changing magnetic field, and emits energy through a medium such as air; the receiving end is placed in the magneti...

Claims

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