Wireless Charger Alignment for Variable EV Receiver Positions
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Solution Overview
Problem
Existing wireless charging technologies face challenges in unifying attachment positions of power receivers across various types of electric moving bodies, such as electric bicycles and scooters, leading to difficulties in bringing the power transmitter close to the receiver, which can result in failed power transmission.
Innovation Solution
A wireless charging device equipped with a power transmitter, a moving mechanism, detection unit, acquisition unit, identification unit, and charge control unit that detects the stop position and type of the moving body, identifies the attachment position of the power receiver, and controls the moving mechanism to bring the power transmitter close to the receiver for non-contact power transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed power transmitter position is used for charging, then the device structure is simple, but it cannot adapt to various attachment positions of power receivers on different types of electric moving bodies
Solution Approach 1:
The power transmitter is made movable through a moving mechanism that can adjust its position in multiple directions. The moving mechanism includes a moving table that can move in the traveling direction and a rotating mechanism that can rotate the power transmitter around the traveling direction, enabling dynamic adaptation to different attachment positions on various electric moving bodies
Solution Approach 2:
The power transmitter is designed with universal adaptability to charge different types of electric moving bodies (electric bicycles, electric scooters, electric motorcycles) by combining a movable platform with rotational capability. This allows a single device to serve multiple functions and accommodate various power receiver attachment positions across different vehicle types
2Productivity
If the power transmitter is positioned far from the power receiver, then the charging device can cover a wider area, but power transmission efficiency decreases and charging may fail
Solution Approach 1:
The moving mechanism dynamically adjusts the distance between the power transmitter and power receiver based on detection information. The system moves the power transmitter closer to the power receiver when needed for efficient power transmission, and can extend its range by moving away when coverage is required, optimizing both efficiency and coverage area
Solution Approach 2:
The system uses detection information from detection units to feedback the position and type of electric moving body. Based on this feedback, the control unit adjusts the position of the power transmitter to maintain optimal distance for power transmission while considering coverage requirements
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 effective and efficient power transmission to power receivers on electric moving bodies by accurately identifying and aligning the power transmitter with the receiver's attachment position, regardless of the vehicle type, ensuring reliable charging across different types of electric vehicles.
Implementation Method 1
a power transmitter 8 that wirelessly transmits power to a power receiver 28 included in an electric moving body 2
Data Source
AI summary
A wireless charging device includes: a power transmitter that wirelessly transmits power to a power receiver included in an electric moving body; a moving mechanism that moves the power transmitter, a detection unit that detects a stop position of the moving body; an acquisition unit that acquires information indicating a type of the moving body; an identification unit that identifies an attachment position of the power receiver based on the type; and a charge control unit that controls the moving mechanism based on the stop position and the attachment position to cause the power transmitter to approach the power receiver.