Wireless Charger Dynamic Coil Alignment Mechanism

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Solution Overview

Problem

Existing wireless chargers for electronic devices face inefficiencies due to poor alignment of energy emitting and receiving coils, leading to reduced charging effectiveness and increased charging time, especially when dealing with devices of varying dimensions.

Innovation Solution

A wireless charger with a support system that includes a movable retaining element connected to a base and an energy emitter, allowing the energy emitter to adjust its position relative to the base and the retaining element, ensuring proper alignment with the receiving coil of the electronic device, regardless of its dimensions, through a mechanism with multiple degrees of freedom in translation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a fixed wireless charger design is used, then the device structure is simple, but the alignment between energy emitting coil and receiving coil is poor for devices of varying dimensions

Engineering Contradiction:
Improveadaptability to various device dimensionsVSAvoidcharger structure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements a dynamic adjustment mechanism where the retaining element can move relative to the base along a first direction, and the energy emitter is mechanically connected to both the base and retaining element such that displacement of the retaining element causes displacement of the energy emitter. This dynamic configuration allows the charger to adapt to different device dimensions while maintaining proper coil alignment, resolving the contradiction between adaptability and structural simplicity.

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If the retaining element is made movable to accommodate various device sizes, then the adaptability improves, but the mechanism complexity increases

Engineering Contradiction:
Improvedevice size accommodationVSAvoidmechanism complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent merges the adjustment function into the existing retaining element structure. The retaining element serves dual purposes: holding the electronic device and driving the position adjustment of the energy emitter through mechanical connection. This integration reduces the need for separate adjustment mechanisms, thereby limiting the increase in complexity while maintaining adaptability to various device sizes.

Inventive Principle:
Principle #5Merging (Combining)

3Productivity

If proper alignment mechanism is added, then charging efficiency improves, but device complexity increases

Engineering Contradiction:
Improvecharging efficiencyVSAvoidcharger structure complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent implements a self-aligning mechanism where the mechanical connection between the retaining element and energy emitter automatically adjusts the energy emitter position in response to device placement. When a device is placed on the support, the retaining element moves to accommodate the device dimensions, and this movement automatically causes the energy emitter to displace to the correct position, achieving proper alignment without requiring additional active control systems or complex mechanisms.

Inventive Principle:
Principle #25Self-service

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

This solution enables efficient wireless charging by ensuring optimal alignment of the energy emitting and receiving coils, reducing energy losses and charging time, while being user-friendly and adaptable to various device sizes.

Implementation Method 1

charging its battery by means of a wireless charger comprising an energy emitting coil for contactless electric energy transfer from the energy emitting coil to the receiving coil by inductive coupling

Methodology Applied
Scientific EffectInductive coupling: Electromagnetic Induction

Data Source

PatentUS9912202B2Wireless charger for an electronic device and vehicle interior equipment comprising such a charger
Publication Date: 2018.03.06 FAURECIA INTERIEUR IND
  • US9912202B2 patent drawing
  • US9912202B2 patent drawing
  • US9912202B2 patent drawing

AI summary

A wireless charger having a support for receiving an electronic device, the support including a base and a retaining element. The retaining element is movable relative to the base for assuming a position depending on the dimensions of the electronic device when it is retained on the support. The charger further includes a wireless energy emitter for wirelessly charging an electronic device retained on the support. The energy emitter is borne by a mechanism mechanically connecting the energy emitter to the base and to the retaining element. The mechanism is laid down so that a displacement of the retaining element relative to the base causes a displacement of the energy emitter relative to the base.