Inductive Power Device Self-Alignment via Permanent Magnet
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Solution Overview
Problem
Existing inductive power transfer systems require compatible spatial arrangement of permanent magnets, limiting their versatility with various energizable loads.
Innovation Solution
Integrating a permanent magnet into the inductive powering device or the energizable load to exert a magnetic force, allowing self-alignment of the windings and eliminating the need for accessory magnets, thus enabling compatibility with a wide range of loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If permanent magnets are arranged on both sides of the inductive powering device and energizable load, then spatial alignment is achieved, but the system loses versatility with various energizable loads
Solution Approach 1:
The patent removes the permanent magnets from the energizable load side and retains only the magnetizable conductor. The inductive powering device side keeps its permanent magnets and magnetizable conductor. This extraction of magnets from one side eliminates the need for compatible magnet arrangements on the load side, thereby improving versatility while maintaining alignment functionality through the remaining permanent magnets acting on the magnetizable conductor.
Solution Approach 2:
The magnetizable conductor serves multiple functions: it is magnetized by the permanent magnets to provide alignment force, and it forms part of the transformer core for inductive power transfer. This multi-functionality allows the system to work with various energizable loads without requiring load-specific magnet arrangements, thus improving versatility.
2Manufacturing precision
If accessory permanent magnets are used for alignment, then spatial arrangement is achieved, but device complexity increases
Solution Approach 1:
The patent combines the alignment function and the transformer core function into a single integrated structure. The magnetizable conductor serves both as the alignment element (when magnetized by permanent magnets) and as part of the transformer core for power transfer. This merging eliminates the need for separate accessory permanent magnets on the load side, reducing device complexity while maintaining alignment capability.
3Force
If multiple permanent magnets are positioned at the periphery, then magnetic force is exerted, but weight and complexity are added to wearable devices
Solution Approach 1:
The patent extracts the permanent magnets from the wearable energizable load and places them only in the stationary inductive powering device. The magnetizable conductor remains in the load to be magnetized by the distant permanent magnets. This extraction eliminates the weight of accessory magnets from the wearable device while maintaining the magnetic force needed for alignment through the stationary magnets acting on the magnetizable conductor.
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 self-alignment and increased magnetic force, ensuring reliable and versatile inductive power transfer to various loads, including wearable devices and electronic equipment, without adding weight or complexity.
Implementation Method 1
a permanent magnet conceived for exerting a magnetic force on the magnetizable conductor or on the further magnetizable conductor for aligning the inductor winding with respect to the further inductor winding
Implementation Method 2
System, an inductive power device, an energizable load and a method for enabling a wireless power transfer
Data Source
AI summary
The system 1 according to the invention comprises an energizable load 2 and an inductive powering device 9 and a permanent magnet 8 arranged on the conductor 4 for interacting with the further conductor 9a for aligning the inductor winding 6 with respect to the further inductor winding 9b. The energizable load 2 for enabling the inductive power receipt comprises a wiring 6 which cooperates with the conductor 4 for forming a secondary wiring of the transformer. In order to form the system for inductive energy transfer, the energizable load 2 is to be placed on the inductive powering device 9, whereby the surface 2a will contact the surface 7. The inductive powering device 9 comprises a further magnetizable conductor 9a provided with a further winding 9b thus forming a primary wiring of the split-core electric transformer. When the winding 6 is brought in the vicinity of the further winding 9b, the magnetic force acting on the further magnetizable conductor 9a serves for an instant proper mutual alignment of the winding 6 and further winding 9b. The invention further relates to a inductive powering device, an inductive load and a method for enabling an inductive energy transfer to en energizable load.