发布时间：2024-01-18
Although there is currently no widely implemented technology for wireless charging of cars, the technology itself is being actively researched by various automakers and other companies. Do you know what types of wireless charging technologies exist for electric vehicles?
1. Static Wireless Charging
Static wireless charging technology charges an electric vehicle while it is stationary. Based on its characteristics, it is typically suitable for places like shopping mall or residential parking lots.
Radiative wireless power transfer technology transmits energy over long distances and mainly includes radio wave and laser methods. Due to its low efficiency and limited power output, it has not yet matured.
2. Dynamic Wireless Charging Technology
Dynamic wireless charging technology for electric vehicles primarily transfers electrical energy through power rails embedded in the ground, using high-frequency alternating magnetic fields to the energy receiving device on vehicles within a certain range on the ground.
This supplies power to the onboard energy storage system, allowing electric vehicles to carry fewer battery packs, extend their range, and make energy replenishment safer and more convenient.
3. Magnetic Resonance
Magnetic resonance technology can transfer energy through high-frequency electromagnetic fields based on the principle of resonant energy coupling. In electric vehicle systems based on magnetic resonance, the AC power from the source is converted through rectification, filtering, and high-frequency inverter circuits into high-frequency AC to achieve resonant conditions for optimal energy transfer.
4. Charging While Driving
This requires the installation of wireless charging transmitters along specific road sections. Electric vehicles traveling on these sections can receive power from the charging system's transmitters, enabling rapid charging in a short time and allowing vehicles to replenish energy while driving, reflecting a dynamic system function for on-the-go charging.