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A wireless power transmission method with an adaptive variable receiving coil

A technology of wireless energy transmission and wireless energy transmission, applied in circuit devices, electrical components, etc., can solve problems such as poor electromagnetic compatibility, increase in output voltage of LC resonant circuit, and burnout of circuit boards at the receiving end, and reduce voltage regulation. chip, avoid damaging the circuit board, and improve the effect of overall transmission efficiency

Active Publication Date: 2021-11-12
苏州法拉第能源科技有限公司
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Problems solved by technology

However, its disadvantage is that it is easy to cause an instantaneous increase in the output voltage of the LC resonant circuit, causing the circuit board at the receiving end to burn out, and the electromagnetic compatibility performance is poor

Method used

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  • A wireless power transmission method with an adaptive variable receiving coil

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] First, the R&D personnel use the wireless energy transmission system to measure the size of the TX coil, and use a vector network analyzer to measure its impedance value. After that, the programmer writes programs to the TX coil and RX coil through the 2.4G Bluetooth communication chip, and the specifications of the RX coil are basically consistent with the TX coil through the measurement of the wireless energy transmission system. At this time, use the host computer program to set the predetermined operating frequency and duty cycle through the STM chip. Input the predetermined voltage value to the TX coil through the power supply, and set the current limit value. The RX coil is connected to the load meter, and the resistance value corresponding to the requirements is adjusted.

[0029] Then first slowly change the number of turns and the size parameters of the inner diameter of the RX coil through the MAXWELL 3D simulation software. Then simulate the coupling coeffi...

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Abstract

The invention belongs to the field of electronic communication and relates to a wireless energy transmission method, in particular to a wireless energy transmission method with an adaptive variable receiving coil. The method proposed by the invention controls the output voltage and improves the transmission efficiency by changing the area size of the RX coil in real time under the condition that the TX coil is fixed. While stably outputting sufficient power, it can avoid damage to the circuit board and improve electromagnetic compatibility. Not only that, this method can reduce voltage regulator chips in RX, thereby further improving the overall transmission efficiency. While stably outputting sufficient power, it can avoid damage to the circuit board and improve electromagnetic compatibility. Not only that, this method can reduce voltage regulator chips in RX, thereby further improving the overall transmission efficiency.

Description

technical field [0001] The invention belongs to the field of electronic communication and relates to a wireless energy transmission method, in particular to a wireless energy transmission method with an adaptive variable receiving coil. Background technique [0002] The wireless energy transmission system based on the electromagnetic field (hereinafter referred to as the system) generally consists of two parts: an energy transmitting device (hereinafter referred to as TX) and an energy receiving device (hereinafter referred to as RX). Its working principle is to realize the process of energy transmission from TX to RX through the conversion of alternating electromagnetic field. According to the principle of physics, when TX and RX generate magnetic resonance (or resonance) with each other, the size and efficiency of the transmitted energy will be greatly improved. [0003] Usually, in order to obtain a sufficiently large transmission efficiency and a specific output voltage...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J50/12H02J50/70H02J50/80
CPCH02J50/12H02J50/70H02J50/80
Inventor 郝鹏贾启梦
Owner 苏州法拉第能源科技有限公司
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