Dynamic Roadway Wireless Charging Pads for Moving Electric Vehicles
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Solution Overview
Problem
Existing wireless charging systems for electric vehicles require vehicles to be parked, rendering them inoperable during charging, which is time-consuming and limits their use.
Innovation Solution
A wireless charging system with multiple pads along a roadway that can transfer electrical power to moving electric vehicles, using a power station and rechargeable batteries to ensure continuous charging as vehicles travel, allowing for bi-directional power transfer between pads and vehicles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electric vehicles are charged at stationary wireless charging stations, then the battery can be charged, but the vehicle must be parked and rendered inoperable for a prolonged duration
Solution Approach 1:
The charging system transitions from a static model where vehicles must stop to a dynamic model where charging occurs during motion. Multiple wireless charging pads are positioned along the roadway at spaced intervals, enabling the vehicle to receive continuous charging power while moving at normal driving speeds, thus maintaining vehicle operability throughout the charging process
Solution Approach 2:
The charging infrastructure is divided into multiple discrete wireless charging pads distributed along the roadway. Each pad provides charging over a specific segment, and the vehicle sequentially passes through multiple pads during travel. This segmentation allows continuous charging without requiring the vehicle to stop, as each pad compensates for the limited range of individual charging zones
2Productivity
If electric vehicles are charged at stationary charging stations, then wireless charging can be provided, but the vehicle requires a minimum parking duration that exceeds fueling time for traditional vehicles
Solution Approach 1:
The system ensures continuous power transfer to the vehicle battery throughout the charging process. As the vehicle moves through successive wireless charging pads, there is no interruption in charging activity. The overlapping ranges of adjacent pads and the vehicle's continuous motion ensure that power delivery remains uninterrupted, enabling charging to occur at full speed without pauses or delays
3Ease of operation
If multiple wireless charging pads are positioned along the roadway for continuous charging, then vehicle charging while in motion is enabled, but the system complexity increases
Solution Approach 1:
Each wireless charging pad is designed as a multi-functional unit that can independently charge multiple vehicles simultaneously and can operate in both charging and power-receiving modes. This universality reduces the need for specialized components for different functions, simplifying the overall system architecture despite the distributed nature of multiple pads along the roadway
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
Enables fast, continuous charging of electric vehicles while in motion, reducing downtime and enhancing travel range without the need for stationary charging.
Implementation Method 1
Each of the plurality of wireless charging pads defines a transmitter that can wirelessly transfer electrical power to a receiver of one or more electric vehicles
Implementation Method 2
the power station defines an inverter that is configured to transfer electrical power to the plurality of wireless charging pads from a power source
Implementation Method 3
a first rechargeable battery positioned adjacent to the roadway, the first rechargeable battery is electrically coupled to the first wireless charging pad
Data Source
AI summary
A wireless charging system that includes a plurality of wireless charging pads positioned along a roadway. Each of the wireless charging pads define a transmitter configured to wirelessly transfer electrical power to a receiver of one or more electric vehicles as the electric vehicles are in motion relative to the roadway. The system includes a power station disposed adjacent to the roadway, and communicatively coupled to the wireless charging pads. The power station defines an inverter configured to transfer electrical power to the wireless charging pads from a power source. The wireless charging pads are collectively configured to wirelessly charge the electric vehicles in response to the electric vehicles moving along the roadway, such that the receiver of the electric vehicles continuously receives the electrical power from the wireless charging pads as the electric vehicle moves on the roadway.