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

Active Publication Date: 2020-09-11
青岛帕沃思智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] An object of the present invention is to provide a wireless power supply device and its control method that at least partially solve any of the above-mentioned problems

Method used

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  • Wireless power supply device and control method thereof
  • Wireless power supply device and control method thereof
  • Wireless power supply device and control method thereof

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Embodiment Construction

[0038] figure 1 is a schematic circuit diagram of the wireless power supply device 100 according to an embodiment of the present invention. figure 2 With figure 1 The circuit diagram of the wireless power receiving device 200 used in conjunction with the wireless power supply device 100 is shown. The wireless power supply device 100 of this embodiment may generally include: a power input interface 110, a power supply voltage measurement circuit 101, a linear step-down circuit 102, a power supply controller 103, an analog-to-digital conversion circuit 104, a power tube drive circuit 105, a power supply drive Circuit 106, electromagnetic resonant circuit 107, coil voltage detection step-down circuit 108, feedback signal processing circuit 109, its operating principle is: external power supply (for example the industrial frequency power supply of AC 220) is supplied from the power input interface 110, and the power supply voltage measurement circuit 101 is used to detect the pow...

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Abstract

The invention provides a wireless power supply device and a control method thereof. The control method comprises steps that an electromagnetic resonance circuit of the wireless power supply device is driven to transmit a detection signal; a sensing signal sensed by a feedback sensing circuit of the wireless power supply device is acquired within a set time range after the detection signal is transmitted, signal characteristics of the sensing signal are extracted, and the signal characteristics include the number of peaks of the sensing signal and the time interval between the peaks; whether the signal characteristics are consistent with characteristics of a preset wireless power receiving device feedback signal is determined, the characteristics of the feedback signal are set according to the wireless power receiving device emitting the feedback signal in response to the detection signal; if yes, the electromagnetic resonance circuit is driven to transmit a magnetic field energy signal to output the power. The control method is advantaged in that the identification process is simple and efficient, anti-interference capability is greatly improved, and identification efficiency and accuracy are greatly improved.

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J50/80H02J50/12
CPCH02J50/12H02J50/80
Inventor 张衍昌秦庆磊
Owner 青岛帕沃思智能科技有限公司
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