Inductive Coupling Assembly for Wireless Charging Alignment

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Solution Overview

Problem

Existing electronic devices face inefficiencies in wireless charging due to misalignment of inductive charging components and the presence of intermediate layers or components between the charger and the device, which reduces charging efficiency and increases charging time.

Innovation Solution

An inductive coupling assembly is integrated within the device's enclosure or protective case, comprising an alignment component and a field-directing component that aligns and redirects the inductive field from the charger to the device's internal charging assembly, minimizing power loss and enhancing charging efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If traditional electrical connection types (USB) are used for charging, then devices can be charged with existing power supplies, but multiple separate power supplies are required for different devices which are burdensome to use, store, and transport

Engineering Contradiction:
Improvecharging compatibilityVSAvoidnumber of power supplies
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements universal inductive charging coils that can charge multiple types of devices (smartphones, tablets, wearables, hearing aids) through a single wireless charging base, eliminating the need for multiple device-specific power supplies while maintaining broad charging compatibility

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Ease of manufacture

If inductive charging components are positioned separately in the charger and device, then manufacturing is simplified, but misalignment occurs reducing charging efficiency and increasing charging time

Engineering Contradiction:
Improvecomponent positioningVSAvoidcharging efficiency
Core Design Contradiction:
Ease of manufactureVSProductivity

Solution Approach 1:

The patent introduces an intermediate inductive coupling assembly containing alignment components (magnets or magnetic materials) and field-directing components that mediate between the charger and device, automatically aligning the charging coils through magnetic attraction while maintaining manufacturing simplicity

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent utilizes magnetic field parameters and material properties (ferromagnetic materials) to create automatic alignment mechanisms that adjust the positional parameters of charging coils during the charging process, optimizing alignment without complex manufacturing requirements

Inventive Principle:
Principle #35Parameter changes

3Reliability

If intermediate layers or components are present between the charger and device, then protective cases can be used, but these layers reduce charging efficiency and increase charging time

Engineering Contradiction:
Improveprotective case functionalityVSAvoidpower loss
Core Design Contradiction:
ReliabilityVSLoss of energy

Solution Approach 1:

The inductive coupling assembly acts as an intermediary that actively compensates for the presence of intermediate layers by using field-directing components to concentrate and guide the magnetic field through protective cases, maintaining charging efficiency despite the additional layers

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent employs materials with specific magnetic permeability parameters and designs coil configurations that optimize magnetic field penetration through intermediate layers, changing the field distribution parameters to minimize power loss while maintaining protective case functionality

Inventive Principle:
Principle #35Parameter changes

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 inductive coupling assembly improves power transmission efficiency, reducing charging time and minimizing power loss by aligning and redirecting the inductive field, resulting in faster and more effective charging of electronic devices.

Implementation Method 1

The transmit inductive coil is configured to be in electrical communication with the receive inductive coil of the electronic device

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Implementation Method 2

The inductive coupling assembly comprises a field-directing component configured to be in electrical communication with at least one of the transmit inductive coil of the charger, or the receive inductive coil of the internal inductive charging assembly of the electronic device

Methodology Applied
Scientific EffectMagnetic field direction: Magnetic Field

Data Source

PatentUS10873204B2Inductive coupling assembly for an electronic device
Publication Date: 2020.12.22 APPLE INC
  • US10873204B2 patent drawing
  • US10873204B2 patent drawing
  • US10873204B2 patent drawing

AI summary

An inductive coupling assembly for an electronic device is disclosed. The system may include an electronic device having an enclosure, and an internal inductive charging assembly positioned within the enclosure. The internal inductive charging assembly may include a receive inductive coil positioned within the enclosure. The system may also include a charger in electrical communication with the internal inductive charging assembly of the electronic device. The charger may include a transmit inductive coil aligned with the receive inductive coil. The transmit inductive coil may be configured to be in electrical communication with the receive inductive coil. Additionally, the system can include an inductive coupling assembly positioned between the electronic device and the charger. The inductive coupling assembly may include a field-directing component configured to be in electrical communication with the transmit inductive coil, and/or the receive inductive coil of the internal inductive charging assembly of the electronic device.