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Wireless power transmission system based on single resonance coil

A technology for wireless power transmission and resonant coils, applied in electrical components, circuit devices, etc., can solve problems such as the strict location of the coil, achieve the effect of large power transmission distance and avoid the phenomenon of frequency splitting

Pending Publication Date: 2019-11-15
SHANGHAI COUPLING INTELLIGENT TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the defects of the prior art, and provide a wireless power transmission system based on a single resonant coil, which can solve the problem that the position of the coil is relatively strict in order to ensure better power transmission efficiency in the existing solution. The problem of harsh conditions

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  • Wireless power transmission system based on single resonance coil
  • Wireless power transmission system based on single resonance coil
  • Wireless power transmission system based on single resonance coil

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0021] Such as Figure 1 to Figure 4 As shown, the wireless power transmission system based on a single resonant coil of the present invention includes a transmitting coil 10 and a receiving coil 20 . Wherein, the transmitting end coil 10 is connected in a transmitting end circuit, and the transmitting end circuit is also connected with an AC power supply, through the transmitting end circuit, the AC power supply supplies power to the transmitting end coil 10 and generates a power signal, and the transmitting end coil 10 is energized to generate a magnetic field to emit power signals. The receiving end coil 20 is connected to a receiving end circuit, and a load is also connected to the receiving end circuit. The receiving end coil 20 is magnetically coupled with the transmitting end coil 10, thereby receiving the power signal transmitted by th...

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Abstract

The invention relates to a wireless power transmission system based on a single resonance coil, comprising a transmitter coil connected to an AC power source to transmit power signals and a receiver coil coupled to the transmitter coil through a magnetic field to receive power signals. The transmitter coil is a resonance coil, and the receiver coil is a non-resonance coil; or the transmitter coilis a non-resonance coil, and the receiver coil is a resonance coil. The beneficial effect is that: because of the setting of one resonance coil, the system of the invention has longer power transmission distance than the Qi standard and can realize the free displacement of equipment within a certain range. At the same time, because the system of the invention has only one resonance coil, the wireless power transmission system of the invention only works at a certain resonance frequency, and the frequency tracking problem caused by the frequency splitting phenomenon is avoided.

Description

technical field [0001] The invention relates to the technical field of wireless power transmission, in particular to a wireless power transmission system based on a single resonant coil. Background technique [0002] Wireless power transfer systems have gone through several stages in their development: [0003] The original scheme directly generates alternating electromagnetic field coupling induction through two non-resonant coils. Although this scheme (Qi standard) has been mass-produced, its shortcomings are also very prominent. On the one hand, the transmission distance is very short (no more than 10mm ), on the other hand the energy transfer efficiency of this method is not high (less than 50%). [0004] Subsequently, the magnetic resonance scheme of the four-coil structure proposed by Professor Marin of the Massachusetts Institute of Technology can effectively increase the energy transmission distance, but its shortcomings are also very obvious. Due to the strong mutu...

Claims

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Application Information

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IPC IPC(8): H02J50/12H02J50/40
CPCH02J50/12H02J50/40
Inventor 李云辉祝可嘉江俊卢杰
Owner SHANGHAI COUPLING INTELLIGENT TECH CO LTD
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