Development of Li-Fi Enabled EV to EV Wireless Charging Communication System
Mohammed Mahaboob Basha, Ramaswamy T., Srinivasulu Gundala, Jerry K. Paul, P. Sumanth and G. Hari Kishore Reddy
EV-to-EV (V2V) wireless charging enables one electric vehicle to charge another’s weak battery using electromagnetic field radiation. This innovative approach ensures stranded EVs can receive power from nearby vehicles without requiring cables. The transmitting vehicle converts battery energy into high-frequency AC, sending it through a front-mounted coil. The receiving vehicle, with a rear coil, captures this energy, converts it back to DC, and charges its battery. Additionally, a Li-Fi-based communication system allows the driver of the discharged vehicle to request charging from the following car. Li-Fi uses flashing light signals, decoded by an LCD display in the receiving vehicle. A small solar panel on the rear vehicle aids signal processing. Both vehicles are controlled by 89C52 microcontroller-based circuits, managing motion and communication. For demonstration, a prototype with two small vehicles is developed—one with a transmitting coil and the other with a receiving coil—along with a one-way communication system. Full-scale implementation would require all EVs to have power transceivers and bidirectional communication systems.
Keywords: Wireless charging system, vehicle-to-vehicle charging, mutual inductance, energy exchange, charging electric vehicles