The principle of wireless charging on the street is achieved through electromagnetic induction. The wireless charging system consists of two main components: one is the infrastructure, including wireless charging devices installed on the ground or in other public areas; The other is the receiving device, which is a wireless charging receiving module embedded in an electric vehicle or other charging device.
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Wireless charging devices in infrastructure generate an electromagnetic field, usually by laying out a series of coils or electromagnetic emitters on the ground. When an electric vehicle or other charging device enters this electromagnetic field with a built-in wireless charging receiver module, the receiver module senses the electromagnetic field and converts it into electrical energy.
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Specifically, when alternating current is passed through the electromagnetic field coil, a changing magnetic field is created. When the coil of the receiving module interacts with this changing magnetic field, an alternating current is generated in the receiving module. The receiving module converts this AC current into DC current and charges it via a battery connected to an electric vehicle or other charging device.
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The advantage of this wireless charging technology is that it does not need to use a traditional wired charging connector, and only needs to park the vehicle or device in the charging area to achieve automatic charging. However, wireless charging is generally slightly less efficient than wired charging, and there are some technical challenges that need to be addressed.