Planar Power Receiver Wiring for Metal-Enclosed Wireless Charging
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Solution Overview
Problem
Existing wireless power transmission systems face challenges in providing a thin power receiver with a high degree of freedom in installation orientation, especially in spaces surrounded by metal, where the power receiver often becomes three-dimensional and thick, making it difficult to mount on IoT devices, and the antenna designs are either expensive or lack clarity in orientation capabilities.
Innovation Solution
A wireless power transmission system is designed with a power receiver comprising a power reception antenna wiring line formed in a plane with open ends and bent portions, allowing for flexible installation orientations, and a power transmission unit with a wiring structure that includes a power transmission antenna mounting portion and wiring line with specific bent configurations to enhance power transmission efficiency and orientation freedom.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a power receiver is designed with a three-dimensional structure to enable power reception from multiple orientations, then the degree of freedom in installation orientation is improved, but the thickness and complexity of the device increases
Solution Approach 1:
The patent extracts the essential function of receiving electromagnetic waves from multiple orientations by using a planar wiring structure with bent portions that creates multiple reflection paths, eliminating the need for complex three-dimensional antenna structures while maintaining multi-orientation reception capability
Solution Approach 2:
The patent transitions from three-dimensional antenna structures to a two-dimensional planar wiring structure by utilizing electromagnetic wave reflection off conductive surfaces, achieving multi-orientation reception through planar geometry rather than volumetric complexity
2Adaptability or versatility
If a power receiver is designed with a three-dimensional structure to enable power reception from multiple orientations, then the degree of freedom in installation orientation is improved, but the thickness of the device increases
Solution Approach 1:
The patent extracts the essential function of receiving electromagnetic waves from multiple orientations by using a planar wiring structure with bent portions that creates multiple reflection paths, eliminating the need for complex three-dimensional antenna structures while maintaining multi-orientation reception capability
Solution Approach 2:
The patent transitions from three-dimensional antenna structures to a two-dimensional planar wiring structure by utilizing electromagnetic wave reflection off conductive surfaces, achieving multi-orientation reception through planar geometry rather than volumetric complexity
3Reliability
If existing antenna designs are used in metal-surrounded spaces, then power transmission can be achieved, but the antenna designs are either expensive or lack clarity in orientation capabilities
Solution Approach 1:
The patent utilizes the conductive wall surfaces of the metal-surrounded space as reflective surfaces to direct electromagnetic waves to the planar power receiver, making the environment itself serve the function of enhancing power reception rather than requiring complex adaptive antenna designs
Solution Approach 2:
The planar power receiver with bent wiring structure serves multiple functions: it receives power from various orientations, utilizes reflective surfaces in the environment, and maintains a simple thin-profile structure, providing universal applicability in metal-surrounded spaces
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 achieves a thin power receiver with high installation orientation flexibility, ensuring efficient power transmission even in metal-surrounded spaces, overcoming the limitations of previous designs by maintaining efficiency and reducing complexity and cost.
Implementation Method 1
an inside of a space surrounded by metal is regarded as a resonator, an electromagnetic wave is radiated from a power transmission unit at a resonant frequency unique to the resonator
Implementation Method 2
The power reception unit is composed of a power receiver including a power reception antenna wiring line and a rectifier circuit
Data Source
AI summary
A wireless power transmission system includes a structure entirely surrounded by an electromagnetic wave shielding member having appropriate conductivity, at least one power transmission unit and at least one power reception unit. The power reception unit is composed of a power receiver including, for example, a power reception antenna wiring line and a rectifier circuit. The power reception antenna wiring line has a wiring structure of two lines which are formed in the same plane and each of which has one end connected to the rectifier circuit, the other ends thereof being open ends which face each other, and the power reception antenna wiring line has a plurality of bent portions in the above wiring structure.