Barkhausen Power Generator Structure for Gap-Tolerant Magnetic Coupling
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Solution Overview
Problem
Existing electric power generating elements using the large Barkhausen effect face challenges in applying a magnetic field to the magnetic body due to gaps between components, requiring precise assembly or additional processes, making manufacturing difficult.
Innovation Solution
The design includes a magnetic body with a coil, a first soft magnetic body positioned outside the coil's winding axis, and a filling member with a second soft magnetic body to fill the gap between the magnetic body and the first soft magnetic body, facilitating easy application of the magnetic field and manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a gap exists between the magnetic body and the soft magnetic body, then the structure is easier to manufacture, but the magnetic field cannot be appropriately applied to the magnetic body
Solution Approach 1:
A non-magnetic filling member is introduced as an intermediary substance to fill the gap between the magnetic body and the soft magnetic body. This filling member has magnetic permeability close to vacuum, allowing magnetic field lines to pass through it effectively while maintaining the physical gap for ease of manufacturing. The filling member thus mediates between the conflicting requirements of gap maintenance and magnetic field continuity.
2Reliability
If the soft magnetic body is brought into close contact with the magnetic body to eliminate the gap, then the magnetic field can be appropriately applied, but highly accurate components or separate processes are required making manufacturing difficult
Solution Approach 1:
The non-magnetic filling member serves as a mediator that eliminates the need for highly accurate component positioning. By filling the gap with a material that allows magnetic field penetration, the system achieves reliable magnetic field application without requiring precision assembly or additional manufacturing processes to eliminate the gap.
Solution Approach 2:
The filling member's magnetic permeability is specifically selected to be close to vacuum permeability, which allows magnetic field lines to pass through it with minimal resistance. This parameter selection enables the gap to be filled while maintaining magnetic field continuity, resolving the contradiction between gap elimination and manufacturing ease.
3Reliability
If a filling member is introduced to fill the gap, then the magnetic field can be appropriately applied without requiring high precision assembly, but the device structure becomes more complex
Solution Approach 1:
The filling member performs multiple functions simultaneously: it maintains the physical gap for ease of manufacturing, allows magnetic field penetration due to its vacuum-close permeability, and provides structural support. This multi-functionality reduces the need for additional components, thereby limiting the increase in device complexity while achieving reliable magnetic field application.
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 and easy application of the magnetic field to the magnetic body, reducing manufacturing complexity and improving electric power generation performance.
Implementation Method 1
a coil wound around the magnetic body
Implementation Method 2
a magnetic body that exhibits a large Barkhausen effect
Data Source
AI summary
Provided is an electric power generating element and the like that are easy to appropriately apply a magnetic field to a magnetic body and easy to be manufactured. Electric power generating element (32) includes magnetic body (40) that exhibits a large Barkhausen effect, coil (42) wound around magnetic body (40), first soft magnetic body (44) positioned outside coil (42) in a winding axis line direction in which winding axis line (B) of coil (42) extends and positioned outside magnetic body (40) in a radial direction around winding axis line (B), and filling member (48) that includes a second soft magnetic body and fills a gap between magnetic body (40) and first soft magnetic body (44).