Dynamic Wireless EV Charging With Server-Based Permission Control
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Solution Overview
Problem
The existing electric vehicle charging infrastructure is inadequate in terms of supply and efficiency, requiring vehicles to stop for extended periods, which affects traffic flow and mobility, and lacks flexible communication methods to adapt to changing road conditions and driving methods.
Innovation Solution
A wireless charging system that allows electric vehicles to charge while moving, using a communication device to request charging permission from a server, which manages charging device information and processes billing based on metering information, enabling charging on the road surface and supporting platooning vehicle groups.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electric vehicles use traditional charging stations to charge batteries, then charging can be performed, but vehicles must stop for extended periods which affects traffic flow and mobility
Solution Approach 1:
The charging system transitions from static (vehicle stopped at charging station) to dynamic (vehicle moving while charging). The wireless charging device installed on road surfaces enables power transfer while the vehicle is in motion, eliminating the need for stationary charging and reducing standby time to near zero.
Solution Approach 2:
The patent replaces the mechanical connection system (plug-and-charging port) with a wireless electromagnetic field-based power transfer system. This substitution allows power transfer without physical contact or vehicle stopping, using electromagnetic induction between the road surface charging device and the vehicle's power receiver.
2Reliability
If electric vehicles stop for battery charging, then charging is completed, but traffic flow and road stability are affected
Solution Approach 1:
The system enables dynamic charging where vehicles continue moving at normal speeds while receiving power. Multiple vehicles can be charged simultaneously along their travel path, maintaining continuous traffic flow without interruptions or dedicated charging lanes that would reduce road capacity.
Solution Approach 2:
The road surface charging devices serve dual purposes: they provide wireless power transfer while maintaining normal road functionality for traffic. The same road infrastructure serves both transportation and charging functions, eliminating the need for separate charging facilities that would impact traffic flow.
3Ease of operation
If wireless charging is implemented while vehicles are moving, then mobility is maintained, but communication methods must adapt to changing road conditions and vehicle movements
Solution Approach 1:
The server performs preliminary actions by pre-authorizing charging requests and establishing communication protocols before the vehicle enters the charging zone. This advance preparation simplifies the real-time communication requirements during actual charging, reducing the complexity of handling moving vehicles.
Solution Approach 2:
The server acts as an intermediary that manages the complex communication between the moving vehicle and the road surface charging devices. It handles authentication, charging parameter adjustment, and coordination, thereby simplifying the direct communication requirements between moving vehicles and infrastructure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution reduces standby time for battery charging, enhances traffic flow and stability by allowing continuous mobility, and provides flexible communication methods that adapt to vehicle movements and road conditions, improving charging efficiency and reducing authentication delays.
Implementation Method 1
a power receiver configured to receive a charging response message from the charging device and to wirelessly receive power from the charging device
Data Source
AI summary
A communication device of a vehicle transmits a charging permission request message to a server and receives charging permission information from the server. A charging requester is configured to transmit a charging request message including the charging permission information to a charging device and a power receiver is configured to receive a charging response message from the charging device and to wirelessly receive power from the charging device.