Wireless Power Transceiver Surface EM Wave Bridge Metal Plate

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Solution Overview

Problem

Current wireless power transmission technologies face challenges in efficiently transmitting power using surface EM waves, particularly in implementing a reliable surface EM wave receiver that maintains circuit stability when the signal output terminal is significantly high above ground.

Innovation Solution

A wireless power transceiver design incorporating a surface EM wave transmitter with a first metal layer, a second metal layer with patterns, dielectric materials, and an insulation layer including ferrite material, along with a bridge metal plate connecting the transmitter and receiver, where one end of the signal output terminal is connected to a floating ground, enabling efficient wireless power transmission and phase adjustment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Power

If wireless power transmission is implemented using surface EM waves with a receiver structure, then power transmission capability is improved, but circuit stability deteriorates when the signal output terminal is significantly high above ground

Engineering Contradiction:
Improvewireless power transmission capabilityVSAvoidcircuit stability
Core Design Contradiction:
PowerVSReliability

Solution Approach 1:

A bridge metal plate is introduced as an intermediary component between the transmitter and receiver. This bridge metal plate serves as a reference potential plane that stabilizes the circuit when the signal output terminal is positioned high above ground, thereby maintaining circuit stability while enabling wireless power transmission capability

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent modifies the receiver structure by connecting one end of the signal output terminal to a floating ground through the bridge metal plate. This parameter change in the grounding configuration resolves the circuit stability issue while preserving the wireless power reception function

Inventive Principle:
Principle #35Parameter changes

2Reliability

If a bridge metal plate is added to connect transmitter and receiver, then circuit stability is improved, but device complexity increases

Engineering Contradiction:
Improvecircuit stabilityVSAvoidstructure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The bridge metal plate performs multiple functions simultaneously: it serves as a reference potential plane for circuit stability, acts as a structural connector between transmitter and receiver, and provides a floating ground reference. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity

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

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 design allows for stable and efficient wireless power transmission using surface EM waves, facilitating the implementation of a surface EM wave receiver and enhancing circuit stability, while maintaining aesthetic appeal through varying bridge metal plate shapes.

Implementation Method 1

methods using surface EM waves, which are propagated through the surface of a metal plate as a transmission medium

Methodology Applied
Scientific EffectSurface EM wave: Surface Acoustic Wave

Implementation Method 2

the insulation layer includes ferrite material

Methodology Applied
Scientific EffectFerromagnetic material phase adjustment: Ferromagnetism

Data Source

PatentUS11489370B2Wireless power transceiver, and image display apparatus including the same
Publication Date: 2022.11.01 LG ELECTRONICS INC
  • US11489370B2 patent drawing
  • US11489370B2 patent drawing
  • US11489370B2 patent drawing

AI summary

Provided are a wireless power transceiver and an image display apparatus including the wireless power transceiver according to the present disclosure. The wireless power transceiver according to an embodiment of the present disclosure comprises a surface electromagnetic (EM) wave transmitter including a first metal layer, a second metal layer, and at least one of a dielectric material formed between the first metal layer and the second metal layer; a surface EM wave receiver including a third metal layer, a fourth metal layer, and at least one of a dielectric material formed between the third metal layer and the fourth metal layer; and a bridge metal plate disposed between the surface EM wave transmitter and the surface EM wave receiver, wherein one end of the signal output terminal is connected to a floating ground. Accordingly, wireless power may be transmitted using surface EM waves.