Varying Thickness Magnetizable Material for Inductive Receiving Device Weight Reduction
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Solution Overview
Problem
Existing receiving devices for magnetic induction-based energy transfer in vehicles face challenges in minimizing weight while maintaining mechanical stability and cost-effectiveness, particularly due to the use of magnetizable materials like iron or ferrite, which increase weight and complexity.
Innovation Solution
The receiving device incorporates a field shaping arrangement with varying thicknesses of magnetizable material behind the coils, deeper where the electromagnetic field is stronger and less deep where it is weaker, to optimize field intensity and reduce weight, using a hat-like shape with a deeper central region and less deep peripheral regions, and compensates depth variations with non-magnetizable materials to ensure mechanical stability and ease of assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If magnetizable material is used to shape field lines and enhance field intensity, then the receiving device can efficiently produce electric energy, but the weight of the receiving device increases
Solution Approach 1:
The magnetizable material is applied non-uniformly with varying thickness behind the coils, deeper where the electromagnetic field is stronger and less deep where it is weaker. This local variation optimizes field shaping efficiency while minimizing unnecessary material usage, thereby reducing overall weight while maintaining power generation capability.
Solution Approach 2:
The thickness parameter of the magnetizable material is changed across different spatial locations to optimize its function. By adjusting the thickness parameter locally, the device achieves efficient field line shaping and energy production without requiring uniform thick material throughout, thus reducing total weight.
2Ease of manufacture
If uniform thickness of magnetizable material is used, then manufacturing is simplified, but weight increases and field intensity optimization is reduced
Solution Approach 1:
Rather than using uniform thickness throughout, the magnetizable material employs local quality variation with different thicknesses in different regions. This approach balances manufacturing feasibility with weight reduction and performance optimization, as the variation follows the electromagnetic field distribution pattern.
Solution Approach 2:
The solution moves from a one-dimensional uniform thickness approach to a two-dimensional or three-dimensional varying thickness profile. This dimensional change allows optimization of field intensity in specific regions while reducing material in others, achieving weight reduction without sacrificing manufacturing simplicity entirely.
3Weight of moving object
If varying thickness of magnetizable material is used, then weight is reduced and field intensity is optimized, but device complexity and assembly difficulty increase
Solution Approach 1:
The varying thickness design uses local quality principles where the magnetizable material thickness corresponds to the electromagnetic field strength distribution. This creates a systematic pattern rather than random complexity, making the design predictable and manageable despite the non-uniform structure.
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 achieves a lightweight, mechanically stable, and cost-effective receiving device capable of efficiently producing electric energy through magnetic induction, with a compact and stable configuration that can be easily integrated into vehicles without requiring individually tailored components.
Implementation Method 1
at least one coil of at least one electric line and wherein the magnetic field induces an electric voltage in the at least one coil during operation
Implementation Method 2
magnetizable material, adapted to shape magnetic field lines of the magnetic field
Data Source
AI summary
A receiving device for receiving a magnetic field and for producing electric energy by magnetic induction. The receiving device includes at least one coil of at least one electric line. The magnetic field induces an electric voltage in the at least one coil during operation. The receiving device and the at least one coil are adapted to receive the magnetic field from a receiving side of the receiving device. The receiving device includes a field shaping arrangement including magnetizable material adapted to shape magnetic field lines of the magnetic field. The field shaping arrangement is placed behind the at least one coil. A depth of the field shaping arrangement varies. A method of manufacturing a receiving device and an arrangement including the receiving device.