Wireless charging technology is divided into two modes: static wireless charging (electromagnetic radiation type, electric field coupling type, magnetic field coupling type) and dynamic wireless charging.Concept and principle of automotive static wireless charging technologyStatic wireless charging technology charges the vehicle when it is stationary. It is commonly seen in shopping malls, parking lots, and parking spaces where self-installed charging stations are available.According to the transmission mechanism, static wireless charging is classified as follows: electromagnetic radiation type, electric field coupling type, and magnetic field coupling type:Electromagnetic radiation static wireless charging technology: Its transmission technology transmits energy through far-field transmission, mainly including radio wave type and laser type. It is suitable for long-distance wireless power transmission.Electric field coupling static wireless charging technology: Its transmission technology transmits electrical energy through near-field transmission, using alternating magnetic fields for energy transmission.Magnetic field coupling static wireless charging technology: Its transmission technology transmits electrical energy through near-field transmission, using alternating magnetic fields for energy transmission. The magnetic field coupling type has gained popularity and is widely used in static wireless charging of electric vehicles.Among them, the magnetic field coupling static wireless charging technology is a relatively popular mode.Common types of magnetic field coupling wireless power transmission technology include induction type and resonance type.Induction type: The primary coil provides a certain frequency of alternating current, which induces a certain current in the secondary coil, and then transfers the energy from the transmission end to the receiving end. When using it, the distance between the two devices must be very close. The power supply distance is controlled at around 0 to 10 cm, and charging can only be done in a 1V1 manner for the coils.