Wireless Coil Assembly Layout for Hinge-Free Cover Power Transfer

Solution Overview

Problem

Existing power transmission methods in home appliances, such as electric wires connecting a mainframe to a cover, complicate assembly and disassembly, cause wire fatigue, and reduce reliability due to wire reciprocation during cover opening and closing.

Innovation Solution

A wireless power supply device with a transmitting coil assembly in a U-shaped housing and a receiving coil assembly in a second housing, electromagnetically coupled for non-contact power transmission, eliminating the need for physical wires and reducing mechanical stress.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If electric wires are used to transmit power from the mainframe to the cover, then power transmission is achieved, but assembly and disassembly become complicated and wire reliability decreases due to reciprocation during cover opening and closing

Engineering Contradiction:

Improvepower transmission reliabilityVSAvoidassembly complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces the mechanical wire connection system with an electromagnetic wireless power transmission system. The transmitting coil assembly in the mainframe and receiving coil assembly in the cover enable power transmission through electromagnetic coupling, eliminating the need for physical wire connections and thereby resolving both the reliability issues from wire reciprocation and the assembly complexity.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces electromagnetic fields as an intermediary medium to transmit power between the mainframe and cover. The transmitting coil generates an electromagnetic field that couples with the receiving coil, serving as a non-contact intermediary that transfers energy without requiring direct physical connection, thus avoiding wire fatigue and simplifying assembly.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If electric wires are used to transmit power from the mainframe to the cover, then power transmission is achieved, but wire fatigue and failure occur due to reciprocation during cover opening and closing

Engineering Contradiction:

Improvepower transmission reliabilityVSAvoidwire service life

Core Design Contradiction:

ReliabilityVSDuration of action of moving object

Solution Approach 1:

The patent replaces the mechanical wire connection system with an electromagnetic wireless power transmission system. The transmitting coil assembly in the mainframe and receiving coil assembly in the cover enable power transmission through electromagnetic coupling, eliminating the need for physical wire connections and thereby resolving both the reliability issues from wire reciprocation and the assembly complexity.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Productivity

If wireless power transmission is implemented with transmitting and receiving coil assemblies, then assembly efficiency is improved and wire fatigue is eliminated, but electromagnetic coupling alignment must be maintained

Engineering Contradiction:

Improveassembly efficiencyVSAvoidalignment requirement

Core Design Contradiction:

ProductivityVSEase of operation

Solution Approach 1:

The patent introduces electromagnetic fields as an intermediary medium to transmit power between the mainframe and cover. The transmitting coil generates an electromagnetic field that couples with the receiving coil, serving as a non-contact intermediary that transfers energy without requiring direct physical connection, thus avoiding wire fatigue and simplifying assembly.

Inventive Principle:

Principle #24Intermediary (Mediator)

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

Enhances assembly efficiency, reduces wire fatigue, and improves power transmission reliability by enabling wireless power transfer between the mainframe and cover components during operation.

Implementation Method 1

a receiving coil assembly (2) mounted in the second housing (21) and electromagnetically coupled with the transmitting coil assembly (1)

Methodology Applied

Scientific EffectElectromagnetic coupling: Electromagnetic Induction

Data Source

PatentUS11196295B2Wireless power supply device and electrical apparatus having the same

Publication Date: 2021.12.07 TYCO ELECTRONICS (SHANGHAI) CO LTD

AI summary

A wireless power supply device includes a first housing, a transmitting coil assembly mounted in the first housing, a second housing, and a receiving coil assembly mounted in the second housing and electromagnetically coupled with the transmitting coil assembly. The first housing has a U-shaped outer contour and includes a first portion, a second portion, and a third portion. The second portion and the third portion extend perpendicularly to the first portion from opposite ends of the first portion. The second portion and the third portion form a recess between the second portion and the third portion. The second housing extends into the recess.