The difference between magnetic resonance and magnetic induction wireless charging technology
From：
Dongguan Kington Electronic Technology Co., Ltd Date：06-18 1492 Belong to：Industry Trends
At present, there are a variety of wireless charging technologies in the market, among which magnetic induction and magnetic resonance technology are the most concerned. This paper is mainly based on the self-developed & lt; Core magnetism & quot; Taking the medium and long distance wireless charging technology as an example, this paper briefly introduces the principle of magnetic resonance wireless charging.
1、 Magnetic resonance wireless charging technology:
“ Core magnetism & quot; Technical principle: the magnetic resonance coupled radio energy transmission technology is adopted, which uses the same frequency resonance of the magnetic field at the receiving end to transfer energy across the space. When we use a radio frequency energy to excite the transmitting end, a non power field will be generated in the space around the transmitting end, and the magnetic field and electric field at any time at any position in the field are orthogonal, And the phase difference is 1 / 2pi, and the magnetic field strength is much higher than the electric field strength. This space electromagnetic field can store energy, but the power flow density of the synthesized electromagnetic wave is zero, and it will not transmit any energy, that is to say, the field will not radiate outward, nor will it lose inward. When we put the receiver with the same resonant frequency in this field, the power flow density of the synthesized electromagnetic wave is zero, The same frequency magnetic resonance will be generated between the transmitter and the receiver, and the energy will be coupled from the transmitter to the receiver in the form of magnetic field, so as to realize the spatial transfer of energy< br />
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“ Core magnetism & quot; Technical highlights: it subverts the traditional technical means of relying on electromagnetic wave radiation to transmit electric energy. From the physical principle, it belongs to the non radiative radio energy transmission mode, so the electromagnetic radiation loss in free space is very small. For example, a typical 50 W magnetic resonance wireless charging system, its total radiation energy is less than 500 MW, so, Spootin's core magnetic technology provides a safe way of wireless charging< br />
2、 Magnetic induction wireless charging technology: at this stage, it is mainly used in the magnetic induction short-range generation wireless charging technology of consumer electronics, and its technical principle is as follows..png)
1、 Magnetic resonance wireless charging technology:
“ Core magnetism & quot; Technical principle: the magnetic resonance coupled radio energy transmission technology is adopted, which uses the same frequency resonance of the magnetic field at the receiving end to transfer energy across the space. When we use a radio frequency energy to excite the transmitting end, a non power field will be generated in the space around the transmitting end, and the magnetic field and electric field at any time at any position in the field are orthogonal, And the phase difference is 1 / 2pi, and the magnetic field strength is much higher than the electric field strength. This space electromagnetic field can store energy, but the power flow density of the synthesized electromagnetic wave is zero, and it will not transmit any energy, that is to say, the field will not radiate outward, nor will it lose inward. When we put the receiver with the same resonant frequency in this field, the power flow density of the synthesized electromagnetic wave is zero, The same frequency magnetic resonance will be generated between the transmitter and the receiver, and the energy will be coupled from the transmitter to the receiver in the form of magnetic field, so as to realize the spatial transfer of energy< br />
2、 Magnetic induction wireless charging technology: at this stage, it is mainly used in the magnetic induction short-range generation wireless charging technology of consumer electronics, and its technical principle is as follows.
