Mobile Vehicle Wireless Power Reception Electrode Obstacle Avoidance
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Solution Overview
Problem
In wireless power transfer systems using the electric field coupling technique, obstacles on the power transmission electrodes can hinder power supply to mobile vehicles, leading to operational disruptions.
Innovation Solution
A mobile vehicle equipped with sensors to detect obstacles, power reception electrodes that form electric field coupling with power transmission electrodes, and an actuator controlled by a circuit to adjust the position of the power reception electrodes and avoid contact with obstacles, ensuring continuous power transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the power reception electrode is positioned close to the power transmission electrode for efficient power transfer, then power transfer efficiency is improved, but the risk of contact with obstacles increases
Solution Approach 1:
The power reception electrode is made movable in the vertical direction through an actuator mechanism. The control unit dynamically adjusts the position of the power reception electrode based on obstacle detection signals from the sensor, lifting it when obstacles are detected and lowering it when the path is clear, thus resolving the contradiction between maintaining close proximity for efficiency and avoiding obstacles for safety
Solution Approach 2:
A feedback control system is implemented where a sensor detects obstacles on the power transmission electrode and sends signals to the control unit, which then actuates the actuator to adjust the power reception electrode position. This closed-loop feedback mechanism enables real-time adaptation to maintain both efficiency and safety
2Productivity
If the power reception electrode is positioned close to the power transmission electrode, then power transfer efficiency is improved, but contact with obstacles hinders power supply and vehicle operation
Solution Approach 1:
The power reception electrode is equipped with an actuator that enables vertical movement. When the sensor detects an obstacle, the control unit activates the actuator to lift the power reception electrode, preventing contact and ensuring continuous vehicle operation while maintaining efficient power transfer when the path is clear
Solution Approach 2:
The sensor continuously monitors the power transmission electrode surface for obstacles before contact can occur. By detecting obstacles in advance and triggering the actuator to lift the power reception electrode proactively, the system prevents interruptions to power supply and maintains operational continuity
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 solution allows for safe and efficient power transfer even when obstacles are present on the power transmission electrodes, maintaining high transfer efficiency and preventing collisions between the vehicle and obstacles.
Implementation Method 1
a power reception electrode that forms electric field coupling with a first power transmission electrode of a power transmission device when the power reception electrode faces the first power transmission electrode, thereby wirelessly receiving alternating current power from the first power transmission electrode
Data Source
AI summary
A mobile vehicle wirelessly receives AC power from a power transmission device including first and second power transmission electrodes arranged along a road surface. The mobile vehicle includes: a sensor that detects an obstacle located at least either on a route of the mobile vehicle or under the mobile vehicle; a first power reception electrode that forms electric field coupling with the first power transmission electrode when facing the first power transmission electrode; a second power reception electrode that forms electric field coupling with the second power transmission electrode when facing the second power transmission electrode; an actuator that moves at least the part of the first power reception electrode in a direction of gravity; and a control circuit that controls the actuator based on a result of detection by the sensor to avoid contact between the first power reception electrode and the obstacle.