Wireless Power Feeder Segmented Coil for Consistent Multi-Load Transfer
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Solution Overview
Problem
Existing wireless power feeders face inefficiencies in powering multiple loads due to varying magnetic field strengths and complex component arrangements, leading to inconsistent power delivery and increased component complexity.
Innovation Solution
A wireless power feeder design featuring a single power feeding circuit and multiple power receiving circuits, with a power feeding coil having surrounding portions that connect adjacent to each other, forming an electromagnetic field resonant circuit for efficient power transfer via mutual inductance and capacitance, reducing component count and assembly complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single power feeding coil surrounds all power receiving coils, then the structure is simple, but the magnetic field strength varies significantly causing inconsistent power delivery
Solution Approach 1:
The power feeding coil is divided into multiple independent surrounding portions, each corresponding to one power receiving coil. This segmentation allows each portion to generate a focused magnetic field for its designated receiving coil, ensuring consistent power delivery while maintaining structural simplicity through modular design.
2Reliability
If multiple power feeding circuits are used for multiple loads, then power delivery consistency improves, but component count and assembly complexity increase
Solution Approach 1:
A single power feeding circuit is designed to serve multiple power receiving circuits simultaneously. The power feeding coil comprises multiple surrounding portions that can independently couple with different receiving coils, allowing one feeding circuit to functionally replace multiple feeding circuits while reducing component count and assembly complexity.
3Device complexity
If a single power feeding coil is used for multiple loads, then component count reduces, but magnetic field interference between loads increases
Solution Approach 1:
The power feeding coil is segmented into multiple surrounding portions that are spatially separated and each targets a specific power receiving coil. This segmentation reduces magnetic field overlap and interference between adjacent loads while maintaining a unified coil structure, thus reducing component count without sacrificing performance.
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 design ensures consistent power delivery to multiple loads with reduced variation in magnetic field strength, improving efficiency and simplifying assembly by using a single power feeding circuit for multiple power receiving circuits, while minimizing mutual interference and component count.
Implementation Method 1
The electromagnetic field coupling circuit has the power receiving coils 102, 103 and the power feeding coil 100, and constitutes an electromagnetic field resonant circuit in which magnetic field coupling via mutual inductance
Implementation Method 2
Each resonant circuit has a power receiving coil 102, 103 and a capacitor 104, 105 connected in series to the power receiving coil 102, 103. The power feeding circuit includes a resonant circuit having a power feeding coil 100 and a capacitor 106 connected in series to the power feeding coil 100
Implementation Method 3
The power feeding circuit includes a resonant circuit having a power feeding coil 100 and a capacitor 106 connected in series to the power feeding coil 100
Data Source
AI summary
A wireless power feeder includes a power feeding circuit, two or more power receiving circuits, and an electromagnetic field coupling circuit. Each power receiving circuit includes a resonant circuit having a load, a power receiving coil, and a capacitor connected in series to each other. The power feeding circuit includes a resonant circuit having a power feeding coil and a capacitor connected in series to the power feeding coil. The power feeding coil includes surrounding portions equal in number to the power receiving coils. The surrounding portions are disposed such that one surrounding portion surrounds one power receiving coil. Adjacent surrounding portions are connected to each other.