Dynamic Wireless Charging (In-Motion EV Charging)
Dynamic Charging, also known as Dynamic Wireless Charging or In-Motion Charging, is a cutting-edge EV charging technology that enables electric vehicles to charge while driving over specially equipped roads. This system uses inductive charging coils embedded beneath the road surface to transfer energy wirelessly to a receiver mounted on the EV.
How It Works
- Inductive Coils are installed under road lanes.
- When an EV equipped with a receiving coil drives over them, the system wirelessly transfers power via magnetic resonance.
- Power is either directly sent to the motor or stored in the vehicle’s battery.
Key Benefits
- Extended Range: EVs can travel longer without needing to stop and recharge.
- Smaller Batteries: Reduces the need for large onboard batteries, cutting weight and cost.
- Fleet Efficiency: Ideal for buses, trucks, and logistics fleets on fixed routes.
Challenges
- High Infrastructure Costs: Requires major road modifications.
- Standardization: Lack of global standards across vehicle and road systems.
- Efficiency: Energy transfer can vary with vehicle speed, alignment, and road conditions.
Current Use Cases
- Pilot Projects: South Korea, Sweden, Israel, and the US are testing dynamic charging highways.
- Public Transport: Deployed in select electric bus lanes and shuttle routes.
- Logistics Corridors: Proposed for heavy-duty trucks on long-haul routes.
Call out:
In‑motion inductive power transfer systems—coils embedded under roads—can significantly reduce range anxiety, extending effective range while minimizing stops.