Parallel Cable Road Charging for Scalable EV Power Transfer
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Solution Overview
Problem
Current road-based wireless charging systems for electric vehicles, particularly those using embedded coils, face challenges such as optimal performance in congested city environments, high installation costs, and inefficiencies in cost, time, and materials. There is a need for a more scalable, easier to install, and efficient system capable of long-distance charging.
Innovation Solution
The proposed solution involves a road-based wireless charging system utilizing parallel cable transmission lines. This system includes at least one AC or DC bus (transmission line) atop or within a roadway, a power controller to maintain consistent voltage, and sensors to monitor the electromagnetic environment. The system modulates power supply to maintain consistent voltage and can convert power from AC or DC to RF simultaneously during transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If embedded coil systems are used for road-based wireless charging, then wireless charging capability is provided, but installation costs and complexity increase
Solution Approach 1:
The patent replaces the mechanical embedding of coils into the road surface with an overhead suspension system. Conductive cables are suspended above the roadway using support structures, eliminating the need for complex road construction and coil installation while maintaining wireless power transfer capability through electromagnetic induction between the overhead cables and vehicle-mounted receivers.
2Reliability
If embedded coil systems are used for road-based wireless charging, then wireless charging capability is provided, but installation time and material usage increase
Solution Approach 1:
The overhead cable suspension system requires minimal road construction compared to embedded coils. The cables can be installed on existing roadways using support structures placed along the road edges, dramatically reducing installation time and material usage while providing the same wireless charging function through air-core electromagnetic coupling.
3Stability of the object's composition
If power supply is increased to maintain consistent voltage in transmission lines, then voltage stability is improved, but energy loss increases
Solution Approach 1:
The system employs sensors to monitor the electromagnetic environment and power controllers to detect voltage variations in the transmission lines. When voltage deviations are detected, the controllers automatically modulate the power supply to maintain consistent voltage levels, creating a closed-loop feedback system that stabilizes voltage without requiring continuous over-powering and thereby minimizing energy waste.
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 system provides a stable and efficient mobile electric vehicle charging solution, enabling longer trips without the need for refueling. It offers a scalable and cost-effective alternative to embedded coil systems, suitable for both urban and highway charging applications.
Implementation Method 1
a first cable (102) substantially parallel to a second cable (104), wherein the combination of the first cable (102) and the second cable (104) constitute a transmission line. The transmission line is configured to wirelessly interact with a receiver antenna
Implementation Method 2
The transmission line is configured to wirelessly interact with a receiver antenna on at least one electric vehicle (10)
Data Source
AI summary
A parallel transmission line system is embedded in, laid atop, or suspended above a roadway to provide a mobile charging system for vehicles, including electric vehicles and drones. The parallel cable transmission line system includes a plurality of parallel line segments able to be individually modified with respect to amount of power supplied to each segment. The parallel transmission line system is configured to deliver power to many cars for a given line segment, which consequently results in reduced power per car. Because of this, the parallel transmission line system is able to operate independently of communications with the vehicles themselves, though the system is able to be optionally integrated with a V2X communication system.