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ECPT (Electric-field Coupled Power Transfer) system based on bilateral LC networks and parameter designing method thereof

A parameter design and network technology, applied in the direction of circuit devices, electrical components, etc., can solve problems such as complex topology, parameter sensitivity, and high transmission efficiency, and achieve the effect of reducing complexity and parameter sensitivity

Active Publication Date: 2017-05-10
重庆华创智能科技研究院有限公司
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Problems solved by technology

[0004] The present application provides an ECPT system based on a double-sided LC network and its parameter design method to solve the technical problems of complex topology and parameter sensitivity caused by multiple resonant elements in the high-order ECPT system in the prior art. Provided system with higher transmission efficiency than existing high-order systems in terms of power

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Embodiment Construction

[0051] The embodiments of the present application provide an ECPT system based on a double-sided LC network and its parameter design method to solve the technical problems of complex topology and sensitive parameters caused by multiple resonant elements in a high-order ECPT system in the prior art.

[0052] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0053] An ECPT system based on a double-sided LC network, including a DC power supply, a full-bridge inverter circuit, a parallel LC network, an electric field coupling structure composed of two pairs of coupled plates, a series LC network, a rectifier filter circuit and a load, wherein , the DC power supply is connected to the full-bridge inverter circuit to provide DC power for the full-bridge inverter circuit, and the parallel LC network consists of a resonant inducto...

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Abstract

The invention provides an ECPT (Electric-field Coupled Power Transfer) system based on bilateral LC networks. A parallel LC network is applied to a transmitting end of the system, output voltage of a full-bridge inverter circuit is enhanced to a high voltage value needed by a coupling mechanism, a series LC network is applied to a receiving end of the system, output resistance is subjected to impedance transformation, and thus, in a condition of the same coupling mechanism excitation voltage, the transmission power and the efficiency of the system are higher, and on the basis, a parameter designing method for the system is provided; and on the premise of the same transmission power, compared with a higher-order ECPT system, the transmission efficiency of the system is higher, and the parameter sensitivity is lower.

Description

technical field [0001] The invention relates to the technical field of wireless power transmission, in particular to an ECPT system based on a double-sided LC network and a parameter design method thereof. Background technique [0002] Wireless Power Transfer (WPT) technology uses magnetic fields, electric fields, microwaves, sound waves and other media as energy carriers to transmit electric energy. Many achievements have been made in many fields such as down detection and smart home. [0003] ECPT (Electric-field Coupled Power Transfer), also known as CPT (Capacitive Power Transfer), CCPT (Capacitively Coupled Power Transfer) system is a wireless power transfer method that uses metal plates as coupling mechanisms and high-frequency electric fields as energy carriers. The coupling mechanism of the system can be made of light and thin copper foil or aluminum foil, so it has many advantages such as light weight, no eddy current loss to the surrounding conductors, and good el...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J50/05
Inventor 苏玉刚谢诗云孙跃叶兆虹戴欣王智慧唐春森朱婉婷
Owner 重庆华创智能科技研究院有限公司
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