Segmented Magnetic Structure for Rotatable Inductive Charging
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Solution Overview
Problem
Existing wireless charging systems face challenges in achieving interoperability between chargers and receivers due to different communication protocols, and the use of magnets near magnetically sensitive devices can interfere with their operation.
Innovation Solution
A multi-protocol system for wireless charging that allows communication between chargers and receivers using methods like load modulation, RF communication, and optical links, along with the use of multi-pole magnets for secure attachment and alignment without affecting magnetically sensitive components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If magnets are used for secure attachment and alignment in wireless charging systems, then attachment strength and alignment precision are improved, but magnetic interference with magnetically sensitive components increases
Solution Approach 1:
The patent divides a single strong magnet into multiple smaller magnets arranged in an array. This segmentation reduces the magnetic field strength at any single location, minimizing interference with magnetically sensitive components while maintaining overall attachment strength through the cumulative effect of multiple magnets working together in parallel.
Solution Approach 2:
The patent creates different local magnetic characteristics by arranging magnets with alternating polarities in a grid pattern. This local quality variation allows the system to provide strong localized attachment forces where needed while creating regions of reduced magnetic field intensity in other areas, thereby reducing overall magnetic interference with sensitive components.
2Adaptability or versatility
If multiple communication protocols are implemented for universal compatibility, then interoperability is improved, but system complexity increases
Solution Approach 1:
The patent implements a multi-protocol communication system where the wireless charging apparatus can operate with multiple different communication protocols (e.g., magnetic induction, electromagnetic resonance, RFID). This universality allows a single device to interface with various types of wireless power receivers regardless of their specific protocol, achieving broad interoperability without requiring separate dedicated systems for each protocol.
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 universal compatibility and efficient power transfer while ensuring that magnets do not impair the operation of magnetically sensitive devices, providing secure attachment and alignment.
Implementation Method 1
a transmitter coil configured to receive a communication signal from the receiver coil
Implementation Method 2
use of multi-pole magnets for secure attachment and alignment
Data Source
AI summary
A magnetic structure for inductive charging is provided. In accordance with an embodiment, the magnetic structure generates a magnetic field that creates a magnetic attachment between an inductive charger and an electronic device and aligns an inductive charger coil with a receiver coil for inductive power transfer. The magnetic structure includes two or more discontinuous arc-shaped permanent magnet sections. The magnetic structure is configured such that the magnetic field generated by the magnetic structure does not impair operation of a magnetic shield layer during inductive power transfer, and the electronic device can be rotated across a continuous range of rotational angles with respect to the inductive charger while keeping the alignment between the inductive charger coil and the inductive receiver coil during inductive power transfer.