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Wireless power supply device and control method thereof

A technology of wireless power supply and control method, applied in circuit devices, electrical components and other directions, can solve the problems of poor recognition accuracy, low recognition efficiency, low reliability, etc., to achieve the improvement of recognition efficiency and accuracy, and the recognition process is simple and efficient. The effect of improving the anti-interference ability

Active Publication Date: 2020-10-23
SHANDONG PAWORTH NEW ENERGY TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, some of the existing power receiving terminal identification technologies use a single signal for identification, which is easily affected by interference signals, poor recognition accuracy, and low reliability; others require complex signal interaction between the power receiving terminal and the power supply terminal. Complicated and low recognition efficiency

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

[0037] figure 1is 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 po...

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Abstract

The invention provides a wireless power supply device and a control method thereof. The wireless power supply device is characterized in that an electromagnetic resonance circuit driving the wirelesspower supply device sends a magnetic field energy signal according to a preset period, and the period comprises a signal emission stage and an emission interval stage; in the signal transmitting stage, the electromagnetic resonance circuit is driven to continuously transmit magnetic field energy signals; sending of the magnetic field energy signal in the emission interval stage is suspended, and an attenuation signal sensed by a feedback signal processing circuit of the wireless power supply device is obtained; whether attenuation abnormity occurs or not is judged according to the attenuationsignal, and if yes, sending of the magnetic field energy signal is interrupted. The device is advantaged in that whether foreign matters exist in the magnetic field or not is judged by detecting the attenuation condition of the set attenuation section in the attenuation signal, so safety is improved.

Description

[0001] This application is a divisional application of the Chinese invention patent application with the application number 201910683244.7, the application date is July 26, 2019, and the invention title is "wireless power supply device and its control method". technical field [0002] The present invention relates to wireless power supply technology, in particular to a wireless power supply device and a control method thereof. Background technique [0003] 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. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J50/80H02J50/12
CPCH02J50/80H02J50/12
Inventor 张衍昌秦庆磊
Owner SHANDONG PAWORTH NEW ENERGY TECH CO LTD
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