The main technology used in wireless power transmission is short-range wireless energy transmission technology, the most common of which are electromagnetic induction and electromagnetic radiation. Here are two common wireless energy transfer technologies:
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1. Electromagnetic induction (inductive coupling) : This technique uses the principle of electromagnetic induction to transfer energy from a transmitter to a receiver. The transmitter generates an electromagnetic field in the sending coil by generating an alternating current, and the coil in the receiver senses this electromagnetic field and converts it into electrical energy. This technology is often used for close-range wireless charging devices, such as wireless charging stations or wireless chargers.
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2. Electromagnetic radiation (radio frequency energy transmission) : This technology uses electromagnetic wave radiation energy for transmission. The transmitter transmits energy to the receiver by generating high-frequency electromagnetic waves. The antenna in the receiver picks up the electromagnetic waves and converts them into electrical energy. This technology is commonly used for energy transfer in radio equipment, RF transmission, and radio energy transmission.
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Wireless power transmission technology is still developing and innovating. At present, wireless charging technology has been widely used to charge electric vehicles, smartphones and other consumer electronic devices to provide a convenient and comfortable use experience.
The world's mainstream wireless power transmission technology is divided into three types, they are electromagnetic wave wireless power transmission technology, electromagnetic induction wireless power transmission technology and resonance power transmission technology.