Identity recognition and resonance decoupling method based on resonant wireless power transmission technology
A resonant radio and identification technology, which is applied in the direction of electrical components, circuit devices, etc., can solve the problems of resonance frequency point shift, affect the work of radio frequency power amplifier, and unreasonable system, so as to meet the needs of identification and simplify identification and identification. Effect of resonant decoupling circuit
Active Publication Date: 2018-06-15
TIANJIN POLYTECHNIC UNIV
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Problems solved by technology
After the wireless power transmission channel is established, it cannot judge whether the resonant coil with the same resonant frequency as the transmitting coil is "stealing electricity", and thus cannot avoid the resonant frequency of the current wireless power transmission, so it cannot completely solve the problem of "stealing electricity". make the system unreasonable
At the same time, when multiple receiving coils are required to supply power at the same time, due to the complex interaction between their impedances, the resonance frequency point shifts, which affects the work of the RF power amplifier, which in turn leads to a decrease in wireless power transmission efficiency and system reliability. low
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[0026] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0027] The invention provides an identity identification and resonance decoupling method of the resonant wireless power transmission technology. This method is mainly used in the field of resonant wireless power transmission. Compared with a separate identification system or a resonant decoupling system, this method is simpler and more reasonable, with higher reliability and lower application cost.
[0028] Wireless power transfer identification and resonance decoupling The transmitter part and the wireless power transfer identification and resonance decoupling receiver part use two or more electromagnetic systems with the same resonance frequency and high quality factor through non-radiative magnetic resonance coupling , Electromagnetic resonance is generated through the coupling of inductance and capacitan...
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The invention discloses an identity recognition and resonance decoupling method based on a resonant wireless power transmission technology. The identity recognition and resonance decoupling method based on a resonant wireless power transmission technology includes an identity recognition method and a resonance decoupling method. The identity recognition method includes the steps: before establishing an energy channel for electric energy transmission, enabling the resonant frequency of a transmitting coil and a receiving coil to generate random synchronous hopping according to a pseudo random code sequence; and when the frequency hopping clock, the frequency hopping frequency and the frequency hopping sequence of both the electric energy transmitting and receiving sides are completely consistent with each other, establishing an energy channel. The resonance decoupling method includes the steps: according to the preset rules, hopping the working frequency; and cutting out the coupling magnetic field between the transmitting end of the wireless power transmission system and the resonant coil of an illegal receiving end. The identity recognition and resonance decoupling method based onthe resonant wireless power transmission technology can simplify the overall system of identity recognition and resonance decoupling, can improve reliability of the system, can improve the system performance, and is conductive to reduction of production cost.
Description
technical field [0001] The invention belongs to the field of wireless power transmission, in particular to an identification and resonance decoupling method based on resonance wireless power transmission technology. Background technique [0002] The charging of electrical equipment is generally carried out through plugs and sockets, but when high-power charging is performed, there is a risk of high-voltage electric shock in this charging method. And due to the existence of friction and wear, the safety, reliability and service life of the system are low, especially in some flammable and explosive fields such as chemical industry and mining, which can easily cause major accidents. The new wireless power transmission system uses the combination of electromagnetic induction principle, power electronics technology and control theory to realize the wireless transmission of electric energy and completely overcome the above limitations in specific applications. [0003] The main p...
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IPC IPC(8): H02J50/80H02J50/12
CPCH02J50/12H02J50/80
Inventor 李阳李玉梅杨庆新冯绍杰霍柯刘哲董维豪
Owner TIANJIN POLYTECHNIC UNIV