Multi-Directional Wireless Power Coil Structure for Flexible Charging
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Solution Overview
Problem
Current wireless power transmission technologies face limitations such as restricted transmission distance and specific position requirements between the transmitter and receiver, limiting the flexibility and efficiency of wireless charging, especially in varying environments.
Innovation Solution
A coil structure comprising a first coil wound on one plane, with at least one second coil and one third coil wound around it in a perpendicular direction, forming a loop circuit and resonating at the same frequency as the first coil, along with a processor for adaptive reconfiguration of electrical connections or operational parameters to enhance power transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single coil is used for wireless power transmission, then the device structure is simple, but the transmission distance is limited and position requirements are restrictive
Solution Approach 1:
The single coil is divided into multiple independent coils (first coil, second coil, third coil) wound in different directions and planes. Each coil can independently generate magnetic flux, allowing the system to transmit power to receivers at various positions and orientations without requiring precise alignment, thus resolving the contradiction between structural simplicity and position flexibility.
Solution Approach 2:
The patent introduces spatial dimensionality by winding coils in different directions (first coil in one plane, second coil around the first coil, third coil around the first coil in a perpendicular direction). This multi-dimensional coil arrangement expands the effective power transmission space, enabling charging flexibility across multiple orientations while maintaining a compact overall structure.
2Adaptability or versatility
If multiple coils are added to improve transmission flexibility, then charging position flexibility improves, but device complexity increases
Solution Approach 1:
The coils are arranged in a nested configuration where the second coil is wound around the first coil, and the third coil is wound around the first coil as well. This nested arrangement allows multiple coils to occupy minimal space while maintaining their independent functionality, achieving high charging flexibility without proportionally increasing device volume or structural complexity.
Solution Approach 2:
The multiple coils serve universal functions: each coil can independently participate in power transmission, and their combined magnetic fields create a robust power transmission capability that works across various positions and orientations. This multi-functionality allows the system to handle diverse charging scenarios without requiring separate specialized components for each function.
3Adaptability or versatility
If coils are wound in multiple directions, then power transmission coverage improves, but manufacturing precision requirements increase
Solution Approach 1:
Each coil is designed with specific local characteristics: the first coil is wound in one plane, the second coil is wound around the first coil, and the third coil is wound around the first coil in a perpendicular direction. These localized winding patterns are optimized for their specific orientations, making the manufacturing process more manageable while achieving comprehensive power transmission coverage through the combination of all coils.
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
This configuration allows for efficient wireless power transmission across various angles and directions, improving charging efficiency even in non-ideal environments by amplifying the output signal and maintaining resonance frequency, thus overcoming the limitations of traditional wireless charging systems.
Implementation Method 1
The first coil may be configured to be magnetically coupled to an external wireless power receiving coil to wirelessly transmit power
Implementation Method 2
The at least one second coil and the at least one third coil may be configured to amplify an output signal of the first coil, and to have the same resonance frequency as a resonance frequency of the first coil
Data Source
AI summary
A coil structure may include a first coil wound on one plane, at least one second coil wound around the first coil, and at least one third coil wound around the first coil in a direction which is perpendicular to a winding direction of the at least one second coil.