Wireless EV Charging Resonator Alignment Mechanism
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Solution Overview
Problem
Current wireless power transmission technologies face challenges in efficiently and conveniently charging electric vehicles, as they require wired connections and have limitations in power capacity, especially when it comes to aligning resonators for effective energy transfer.
Innovation Solution
A wireless power charging station with a source resonator and a driving unit that adjusts the position of a target resonator relative to the electric vehicle, using a distance controller and a connector to maintain optimal alignment and efficiency, while employing superconductive materials and cooling systems to maintain resonance properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wired power supply connections are used for electronic devices, then power transmission reliability is ensured, but convenience and ease of operation deteriorate
Solution Approach 1:
The patent replaces the mechanical wired connection system with a wireless electromagnetic field-based power transmission system. The charging station uses electromagnetic induction to transfer power without physical contact, eliminating the need for plugging and unplugging power cables while maintaining reliable power transmission through the electromagnetic coupling between transmitter and receiver coils.
Solution Approach 2:
The patent introduces electromagnetic fields as an intermediary medium to transfer power between the charging station and electronic devices. The electromagnetic field acts as a mediator that carries energy wirelessly through space, replacing the direct mechanical electrical connection while ensuring continuous and reliable power delivery.
2Device complexity
If conventional batteries are used in electric vehicles, then device simplicity is maintained, but power capacity and charging efficiency deteriorate
Solution Approach 1:
The patent merges the conventional battery system with a wireless power reception system. The electric vehicle contains both its existing battery and a receiver unit that can wirelessly receive power from the charging station. This combination allows the vehicle to maintain its simple battery architecture while gaining enhanced power capacity through additional wireless power input during charging operations.
3Loss of energy
If resonators are aligned for wireless power transmission, then power transmission efficiency is improved, but device complexity and alignment precision requirements worsen
Solution Approach 1:
The patent implements feedback mechanisms to automatically monitor and adjust resonator alignment during wireless power transmission. Sensors detect the coupling status between transmitter and receiver resonators, and control systems automatically adjust positions or tuning parameters to maintain optimal resonance and maximize power transmission efficiency without requiring manual alignment intervention.
Solution Approach 2:
The patent employs dynamic adjustment capabilities for resonator positioning and frequency tuning. The system can adaptively change resonator positions, orientations, or operating frequencies in real-time to maintain optimal coupling conditions, transforming the static alignment problem into a dynamically self-adjusting process that reduces complexity.
4Loss of energy
If resonators are aligned for wireless power transmission, then power transmission efficiency is improved, but measurement and detection difficulty worsens
Solution Approach 1:
The patent uses feedback-based detection systems that monitor power transmission efficiency as a direct indicator of resonator alignment status. By measuring the coupling coefficient, power transfer rate, or resonance frequency shift, the system can automatically determine whether resonators are properly aligned without requiring complex direct positional measurements or visual detection methods.
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 efficient wireless power transfer to electric vehicles by maintaining resonance and alignment, enhancing charging efficiency and convenience, and ensuring reliable energy delivery.
Implementation Method 1
using resonance characteristics of radio frequency (RF) devices in order to transmit power wirelessly
Implementation Method 2
A source resonator 131 and a target resonator 133 may be aligned to transmit power wirelessly
Implementation Method 3
The source resonator 131 may include a superconductive material, and the charging unit 405 may include a cooler 410 configured to cool the source resonator 131 in order to maintain a superconductive property of the source resonator 131
Implementation Method 4
an inverter configured to convert the converted DC voltage into an AC voltage, using the resonant frequency
Data Source
AI summary
A wireless charging station, an electric vehicle charged wirelessly, and a method of charging an electric vehicle are provided. A wireless charging station include a charging unit configured to transmit power wirelessly to an electric vehicle, using a source resonator installed in the charging station; and a driving unit configured to move a target resonator connected to the source resonator from a position at which the target resonator is mounted on the charging unit to an installation space of the electric vehicle, when the electric vehicle is disposed in a charging area of the charging station.