Wireless Charging Pad With Settable Fluid Matrix

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Solution Overview

Problem

Wired charging solutions for electric vehicles are cumbersome and prone to mechanical wear, safety hazards, and vandalism, while existing wireless charging systems face inefficiencies in power transfer and environmental durability.

Innovation Solution

A wireless power transfer system using a casing filled with a settable fluid and conductive filaments, forming a structural matrix, which encases electrical components and includes a resonant induction coil for efficient power transfer and impact resistance, allowing for safe and efficient charging of electric vehicles without physical connectors.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If wired charging connections are used, then power transfer reliability is improved, but ease of operation deteriorates due to cables and connectors being cumbersome and inconvenient

Engineering Contradiction:
Improvepower transfer reliabilityVSAvoidease of operation
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent replaces the mechanical wired charging system (cables and connectors) with a wireless electromagnetic field-based power transfer system. The transmitting pad uses electromagnetic induction to transfer power through air or other media without physical contact, eliminating the need for plugging and unplugging cables while maintaining reliable power transfer.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces an electromagnetic field as an intermediary medium to transfer power between the charging source and the device. The transmitting pad generates an electromagnetic field that couples with the receiving device's coil, enabling power transfer through air or other media without direct physical connection.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If wireless charging systems are used, then ease of operation is improved, but power transfer efficiency deteriorates due to inefficiencies in wireless power transfer

Engineering Contradiction:
Improveease of operationVSAvoidpower transfer efficiency
Core Design Contradiction:
Ease of operationVSLoss of energy

Solution Approach 1:

The patent optimizes power transfer efficiency by carefully selecting and adjusting key parameters: operating frequency (resonant frequency matching between transmitting and receiving coils), coil geometry and spacing, and electromagnetic field strength. These parameter optimizations minimize energy losses while maintaining wireless operation.

Inventive Principle:
Principle #35Parameter changes

3Ease of operation

If wireless charging systems are used, then safety deteriorates due to exposed electrical contacts and vandalism risks, but this improvement is needed for convenience

Engineering Contradiction:
ImproveconvenienceVSAvoidsafety
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent extracts and eliminates the vulnerable exposed electrical contacts and connectors from the charging system by implementing a fully wireless power transfer mechanism. The transmitting pad and receiving device communicate and transfer power through electromagnetic fields without physical contact points that could be exposed or vandalized.

Inventive Principle:
Principle #2Taking out (Extraction)

4Reliability

If a protective casing is used, then reliability is improved, but device complexity increases due to additional structural components

Engineering Contradiction:
ImprovereliabilityVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent employs composite material structures for the protective casing, combining materials with different properties (such as rigid outer shells with flexible seals, or transparent polycarbonate with metal reinforcement) to achieve optimal protection against environmental factors while managing the complexity through integrated design.

Inventive Principle:
Principle #40Composite materials

5Strength

If conductive filaments are embedded in settable fluid, then impact resistance is improved, but manufacturing precision deteriorates due to construction complexity

Engineering Contradiction:
Improveimpact resistanceVSAvoidmanufacturing precision
Core Design Contradiction:
StrengthVSManufacturing precision

Solution Approach 1:

The patent applies preliminary action by pre-positioning the conductive filaments in their desired configurations before introducing the settable fluid. The filaments are arranged in specific patterns (such as coils or traces) and then the fluid is poured or injected to encapsulate them, followed by curing to lock the structure in place. This sequence ensures both structural integrity and electrical functionality.

Inventive Principle:
Principle #10Preliminary action

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 system provides efficient, safe, and aesthetically pleasing wireless charging with reduced mechanical wear and vandalism risks, improving reliability and convenience by eliminating exposed electrical contacts and cables, while maintaining structural integrity against environmental impacts.

Implementation Method 1

The casing is filled with a settable fluid which is bound to the sheath and forms a structural matrix

Methodology Applied
Scientific EffectAdhesion: Adhesive

Implementation Method 2

The electrical component is electrically connected with the conductive filament

Methodology Applied
Scientific EffectElectrical conduction: Conduction (electrical)

Implementation Method 3

includes a resonant induction coil for efficient power transfer

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Data Source

PatentUS9653206B2Wireless power charging pad and method of construction
Publication Date: 2017.05.16 WITRICITY AI TECH LLC
  • US9653206B2 patent drawing
  • US9653206B2 patent drawing
  • US9653206B2 patent drawing

AI summary

Systems, methods and apparatus for a wireless power transfer are disclosed. In one aspect a wireless power transfer apparatus is provided. The apparatus includes a casing. The apparatus further includes an electrical component housed within the casing. The apparatus further includes a sheath housed within the casing. The apparatus further includes a conductive filament housed within the sheath. The electrical component is electrically connected with the conductive filament. The casing is filled with a settable fluid bound with the sheath to form a structural matrix.