This is how wireless charging works in an electric car

Inductive charging, or wireless charging, uses an electromagnetic field to transfer energy without a physical element bridging the gap between the part that supplies the electrical energy and the part that stores it. In automobiles, this technology is currently used to charge small batteries—those in mobile phones or some car remote controls—and is beginning to be used to recharge batteries in plug-in hybrid and electric cars. Basically, these types of stations consist of a primary coil (located in or on the ground) that generates a magnetic field. This induces a current in the secondary coil (located under the vehicle), which charges the battery. The two parts do not need to be in contact. More information about wireless charging at km77.com .