Multi-Conductor Resonator for Wireless Power Coupling
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Solution Overview
Problem
The inefficiency of wireless power transmission/reception due to limited electromagnetic field coupling between primary and secondary resonators in electronic devices, leading to the need for multiple charging devices and cables, which is inconvenient and burdensome for users.
Innovation Solution
An electronic device equipped with a resonator that includes a first conductor and multiple second conductors, with loads connected in series or parallel, to enhance electromagnetic field coupling efficiency, allowing for wireless charging without the need for a connector and enabling miniaturization of devices like wearable electronics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a resonator is used for wireless power transmission/reception, then wireless charging is enabled, but the coupling efficiency between primary and secondary resonators is insufficient
Solution Approach 1:
The resonator is segmented into multiple second conductors (at least two) that are electrically coupled to different points on the first conductor, creating multiple current paths that enhance electromagnetic coupling with the primary resonator while maintaining resonant frequency operation
Solution Approach 2:
The patent transitions from a conventional single-loop resonator to a multi-conductor planar structure that utilizes two-dimensional space more effectively, with conductors arranged in specific geometric patterns to optimize electromagnetic field distribution and coupling efficiency
2Adaptability or versatility
If multiple charging devices and cables are provided for different electronic devices, then each device can be charged, but the user burden and inconvenience increase
Solution Approach 1:
The resonator design enables universal wireless charging capability that can charge multiple types of electronic devices (smartphones, tablets, wearables, etc.) with a single charging device, eliminating the need for device-specific charging cables and adapters
3Power
If wireless charging is implemented with conventional resonators, then power transmission is possible, but the efficiency is low and miniaturization is limited
Solution Approach 1:
The patent optimizes resonant frequency parameters and electromagnetic coupling parameters by adjusting the geometry, size, and arrangement of the first and second conductors, achieving enhanced power transmission efficiency within a compact form factor suitable for wearable devices
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 enhanced resonator design improves coupling efficiency, allowing for efficient wireless charging of multiple devices with a single charging device, reducing the need for multiple accessories and facilitating the miniaturization of electronic devices.
Implementation Method 1
a resonator that is configured to generate induced current by electromagnetic coupling
Implementation Method 2
The resonator may generate a loop type current that flows in the first and second conductors
Data Source
AI summary
Disclosed is an electronic device including a resonator that generates an induced current by electromagnetic coupling. The resonator includes a first conductor, a plurality of second conductors, a one end of each of the second conductors being electrically coupled to a first point of the first conductor, and an other end of each of the second conductors being electrically coupled to a second point of the first conductor, and at least one impedance load connected with the second conductors in series or in parallel. Thus, the resonator may generate current through the first and second conductors.