Car interior decoration seat wireless charging board for Toyota Sienna 2022

Product description

electromagnetic coupling Electromagnetic coupling is all too familiar to power supply engineers, and transformers use this principle to transfer energy. If the two windings of the transformer are separated, it is a wireless power supply in a sense. The charging of an electric toothbrush is a typical case, but the method of electromagnetic coupling has great disadvantages. Without a magnetic core with high magnetic permeability as a medium, the magnetic force lines will seriously diverge into the air, resulting in a decrease in transfer efficiency, especially in two When the coil is far away, the drop is very strong. So it is not suitable for high-power, long-distance wireless power supply. Photocoupler Convert electrical energy into light energy, such as a laser, and transfer the energy to the destination through light and then convert it into electrical energy. This wireless power supply technology is relatively intuitive, and the photoelectric conversion technology is relatively widely used. However, the transmission path of light has defects, that is, there must be no obstacles in the transmission path. Therefore, this technology also has great application defects. electromagnetic resonance The term electromagnetic resonance is a bit unfamiliar. It is said that its principle is similar to that of acoustic resonance. Two media with the same resonance frequency can be used to transfer energy. WiTricity's technology uses this principle. They call it non-radiative electromagnetic resonance. Of course, this may not mean that the technology has no radiation, but it is indeed very different from electromagnetic radiation in our common concept.