Induction Component Production via Ferromagnetic Substrate Pressing

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Solution Overview

Problem

Existing methods for producing induction components are inefficient and do not allow for the simultaneous mass production of identical or varied induction components with different coil configurations.

Innovation Solution

A method where multiple coils are arranged in a block made of a pressed ferromagnetic substrate, with the substrate powder filled inside and then pressed to create a block, which is later divided into individual components, allowing for the production of identical or varied induction components with embedded coils and continuous wires.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If multiple coils are produced individually using traditional methods, then each coil can be precisely manufactured, but production efficiency is low and mass production is not achieved

Engineering Contradiction:
Improveproduction efficiencyVSAvoidproduction process complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The production process is segmented into distinct stages: coil winding on separate jigs, substrate preparation, assembly into mold, pressing, and cutting. This allows each stage to be optimized independently while enabling mass production through simultaneous processing of multiple coils

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Multiple coils are combined into a single mold cavity arrangement, allowing simultaneous pressing and curing of multiple induction components in one production cycle, thereby achieving mass production while maintaining individual coil precision

Inventive Principle:
Principle #5Merging (Combining)

2Productivity

If coils are arranged in a block and pressed together, then mass production is achieved, but the coil connections require additional termination steps

Engineering Contradiction:
Improvesimultaneous production capacityVSAvoidcoil termination complexity
Core Design Contradiction:
ProductivityVSEase of manufacture

Solution Approach 1:

Coils are pre-wound on jigs with pins that extend through the substrate, establishing connection points before the pressing process. This preliminary arrangement simplifies subsequent termination steps as the wire paths are already defined and accessible

Inventive Principle:
Principle #10Preliminary action

3Stability of the object's composition

If substrate powder is pressed around arranged coils, then a unified block structure is created, but the pressing process becomes more complex

Engineering Contradiction:
Improveblock structure integrityVSAvoidmolding process complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The substrate powder acts as an intermediary material that binds the coils together into a unified block structure. The powder is applied around the pre-arranged coils and then pressed to create a stable composite structure that maintains individual coil integrity while forming a cohesive assembly

Inventive Principle:
Principle #24Intermediary (Mediator)

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

Enables efficient and simultaneous production of a large number of induction components with different coil configurations, improving production efficiency and allowing for customizable inductance by using different substrate powders with varying magnetic properties.

Implementation Method 1

the substrate powder is then pressed. This creates a block with a large number of coils

Methodology Applied
Scientific EffectCompression: Compression

Implementation Method 2

The winding ends in the end face of the inductor created in this way are contacted by sputtering

Methodology Applied
Scientific EffectSputtering: Sputtering

Data Source

PatentEP3134907B1Method for producing an induction component
Publication Date: 2019.08.14 WURTH ELEKTRONIK EISOS
  • EP3134907B1 patent drawingFigure 1~4
  • EP3134907B1 patent drawingFigure 5~8
  • EP3134907B1 patent drawingFigure 9~11

AI summary

The invention relates to a method for producing induction components, each containing a coil, in order to wind the coils on a wire winding plate containing a plurality of wire winding pins arranged in rows and columns, using a continuous wire for a number of coils. The template provided with the coils is then pressed in a moulding press together with ferromagnetic powder substrate, which surrounds the coils. After removing the template, the inner regions of the coils are again provided with powder substrate in a moulding press, and pressed. Finally, the connections are contacted, and the blocks are broken up into individual induction components, each containing a coil.