Dynamic Vehicle Wireless Charging with Interruption Circuit Redundancy
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Solution Overview
Problem
Existing wireless power transfer systems for vehicles in motion face challenges in handling abnormal states such as overcharge, which can lead to battery degradation, and there is a need for a system that effectively manages power transfer to prevent such issues.
Innovation Solution
A wireless power transfer system that includes a supply device on the road and a vehicle equipped with a power reception device, where the system determines if the number of circuits with interruption functions is two or more, and adjusts the power transfer accordingly, reducing the power amount if fewer circuits are available, to prevent overcharge and battery degradation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the vehicle is equipped with only one circuit having an interruption function, then the device complexity is reduced, but the reliability of power transfer safety is compromised due to increased risk of overcharge
Solution Approach 1:
The system implements feedback control by having the processor continuously monitor the number of available interruption circuits and dynamically adjust the power transfer amount accordingly. When only one interruption circuit is available, the processor reduces the power transfer amount to prevent overcharge, creating a closed-loop safety mechanism that adapts to the system's redundancy level.
Solution Approach 2:
The invention changes the operational parameter (power transfer amount) based on the configuration state of interruption circuits. By adjusting the power transfer amount from normal levels to reduced levels when interruption circuit redundancy is insufficient, the system adapts its operating parameters to maintain safety while continuing operation.
2Reliability
If the power transfer amount is reduced to prevent overcharge, then the battery degradation is suppressed, but the charging efficiency is lowered
Solution Approach 1:
The system applies partial action by transferring only the amount of power that can be safely managed given the interruption circuit configuration. Rather than attempting full power transfer and risking overcharge, the system deliberately transfers a reduced amount of power that is sufficient for operational needs while maintaining safety margins to prevent battery degradation.
3Reliability
If the system continuously monitors interruption circuit status, then the power transfer safety is improved, but the device complexity increases due to additional control mechanisms
Solution Approach 1:
The control system performs self-service by using the existing processor to determine the number of interruption circuits and automatically adjust power transfer without requiring external monitoring systems. The processor leverages its existing computational capabilities to execute the safety determination logic, avoiding the need for separate dedicated monitoring hardware.
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
The system effectively suppresses battery degradation by ensuring that power transfer is managed to prevent overcharge, maintaining the health of the vehicle's battery during dynamic wireless charging.
Implementation Method 1
a power reception device and travels on the road, the wireless power transfer system having a configuration in which the power reception device receives power from the supply device in a manner that the power is wirelessly transferred to the vehicle
Data Source
AI summary
A wireless power transfer system includes: a supply device that is provided on a road and transfers power; and a vehicle that is equipped with a power reception device and travels on the road, so that the power reception device wirelessly receives power from the supply. Further, the vehicle includes a processor, which determines whether a total number of circuits having an interruption function related to power transfer is two or more in the vehicle and the supply device; and reduces an amount of power to be transferred by the supply device to the vehicle in a case where the total number of the circuits having the interruption function is less than two.