Non-Contact Power Transfer Pairing for Mixed-Traffic Vehicles
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Solution Overview
Problem
Existing non-contact power transmission systems struggle to accurately determine and transmit power to moving vehicles in mixed traffic scenarios, leading to inefficiencies and inappropriate power distribution.
Innovation Solution
A non-contact power transmission system that includes a power supply device with a position determination unit and a power reception device capable of magnetic field coupling, allowing for precise power transmission based on vehicle positioning and communication, with control units to manage power supply and reception, and a method that involves determining the position of the power supply device, pairing through magnetic field coupling, and controlling power reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If determination coils are embedded in the road surface to perform non-contact power supply while driving, then power transmission can be achieved, but the performance is degraded and appropriate power transmission cannot be performed
Solution Approach 1:
The patent introduces an intermediary determination device that uses camera imaging to capture vehicle information, which is then processed by a determination unit to identify vehicles. This intermediary optical detection system replaces the degraded road-embedded coil method, enabling accurate vehicle identification without compromising power transmission reliability.
Solution Approach 2:
The patent replaces the mechanical/electrical road-embedded determination coil system with an optical detection system using cameras and image processing. This substitution eliminates the performance degradation associated with embedded coils while maintaining non-contact power supply capability.
2Reliability
If Double-LCC method is used to increase coil impedance except directly above, then power transmission is controlled, but mixed traffic cannot be handled when similar vehicles pass
Solution Approach 1:
The patent segments the power transmission control into multiple independent detection zones using multiple cameras positioned at different locations. Each camera captures vehicle information independently, allowing the system to distinguish between different vehicles in mixed traffic scenarios while maintaining controlled power transmission to authorized vehicles only.
Solution Approach 2:
The patent implements a feedback mechanism where the determination unit continuously monitors vehicle information from camera images, identifies vehicles, and adjusts power transmission accordingly. This feedback loop enables the system to adapt to mixed traffic conditions by controlling power supply based on real-time vehicle identification results.
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 more appropriate and efficient power transmission to moving vehicles by ensuring accurate pairing and power distribution, even in mixed traffic conditions, thereby improving energy efficiency.
Implementation Method 1
a power reception side control unit that performs pairing by magnetic field coupling between the power reception device and the power supply device determined by the position determination unit
Data Source
AI summary
A non-contact power transmission system of an embodiment is a non-contact power transmission system that supplies electric power in a non-contact state from a power supply device provided in a moving path of a moving body to a power reception device provided in the moving body, wherein the power reception device includes: a position determination unit which determines a position of the power supply device; and a power reception side control unit which performs pairing by magnetic field coupling between the power reception device and the power supply device determined by the position determination unit and performs an electric power reception control based on electric power obtained from the paired power supply device, and wherein the power supply device includes a power supply side control unit which supplies electric power corresponding to required electric power from the paired power reception device to the power reception device.