Roadway-Embedded Wireless Charging Transmitters for Electric Vehicles
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Solution Overview
Problem
Current charging technologies for electric vehicles are limited in their ability to wirelessly charge batteries while the vehicle is in motion, restricting the vehicle's effective range and convenience.
Innovation Solution
A system of charge transmitters embedded in roadways broadcasts charging signals to a charge transceiver in the vehicle, allowing wireless charging as the vehicle drives, with electromagnetic readers and receiver units for data communication and energy transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless charging is implemented while the vehicle is in motion, then the vehicle's effective range and convenience are improved, but the system complexity and infrastructure requirements increase
Solution Approach 1:
The charging system is divided into multiple discrete charge transmitters embedded at different locations along the roadway, rather than requiring a single large charging facility. This segmentation allows the vehicle to charge incrementally during normal driving through various environments including roadways, driveways, and parking lots.
Solution Approach 2:
The patent introduces charge transmitters and transceivers as intermediary devices that enable wireless energy transfer between the roadway infrastructure and the vehicle's battery system. These intermediaries facilitate charging during motion without requiring direct physical connection or vehicle stops.
2Duration of action of moving object
If charge transmitters are distributed along the entire roadway distance, then continuous charging capability is improved, but the infrastructure cost and installation complexity increase
Solution Approach 1:
Charge transmitters are pre-installed and embedded into the roadway infrastructure at predetermined intervals before vehicles need them. This preliminary placement ensures that when vehicles drive through the area, charging capability is already available without requiring real-time activation or complex dynamic positioning systems.
Solution Approach 2:
The roadway infrastructure is designed to serve multiple functions: it provides the driving surface, structural support, and integrated charging capability through embedded transmitters. This multi-functionality reduces the need for separate dedicated charging facilities and allows charging in various environments including roadways, driveways, and parking lots.
3Length of moving object
If the vehicle charges while driving, then the effective range is extended, but the energy transfer efficiency and reliability may be compromised due to motion
Solution Approach 1:
The system enables continuous energy transfer to the vehicle battery throughout the driving process rather than requiring intermittent charging stops. Multiple charge transmitters are distributed along the roadway at predetermined distances, ensuring that the vehicle is always within range of an active transmitter, thereby maintaining continuous charging and extending effective range while preserving reliability.
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 continuous battery charging during driving, increasing the electric vehicle's range and facilitating data collection for analysis, while allowing charging in various environments like roadways, driveways, and parking lots.
Implementation Method 1
each of the charge transmitters broadcasts a charging signal... The charge transceiver is in wireless communication with each of the charge transmitters
Data Source
AI summary
An electric vehicle charging assembly includes a plurality of charge transmitters that are each embedded into a roadway. The charge transmitters are spaced a predetermined distance apart from each other and are distributed along an entire distance of the roadway. Moreover, each of the charge transmitters broadcasts a charging signal. A charge transceiver is coupled to an electric vehicle and the charge transceiver is in electrical communication with batteries of the electric vehicle. The charge transceiver is in wireless communication with each of the charge transmitters when the electric vehicle is driven on the roadway. The charge transceiver receives the charge signal for charging the batteries in the electric vehicle while driving.