Joined Ferrite Core Assembly With Gap-Filled Thermal Interface
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Solution Overview
Problem
Inductive components, such as transformers, face challenges in effectively managing heat dissipation and magnetic flux distribution due to the assembly of core parts, which can lead to inefficiencies in both thermal and magnetic conductivity.
Innovation Solution
Incorporating a through-opening in at least one core part to allow a heat-conducting medium to fill the gap between joining surfaces, enhancing thermal conductivity and magnetic flux flow by configuring recesses and trenches to distribute the medium efficiently, and using heat sinks with depressions to facilitate heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If core parts are assembled to form the coil core, then the structural flexibility and assembly ease are improved, but gaps form between joining surfaces which deteriorate thermal conductivity and magnetic flux distribution
Solution Approach 1:
A heat-conducting medium is introduced as an intermediary substance between the core parts to fill gaps at joining surfaces. This medium mediates thermal energy transfer across the interface, compensating for the thermal conductivity deterioration caused by assembly gaps while preserving the structural benefits of modular core construction.
Solution Approach 2:
The physical state and distribution of the heat-conducting medium are optimized to enhance thermal contact between core parts. By controlling parameters such as medium viscosity, application method, and filling pressure, the solution transforms the quality of the interface region, converting gap defects into effective thermal conduction paths.
2Ease of manufacture
If core parts are assembled to form the coil core, then the structural flexibility and assembly ease are improved, but gaps form between joining surfaces which deteriorate magnetic flux distribution
Solution Approach 1:
The heat-conducting medium serves a dual function as an intermediary: it improves thermal conduction and simultaneously enhances magnetic flux distribution at the joining surfaces. The medium fills irregularities and creates a more uniform magnetic path, reducing flux leakage and improving the reliability of magnetic coupling between assembled core parts.
3Temperature
If heat-conducting medium is applied to joining surfaces, then thermal conductivity is improved, but uneven distribution in gaps reduces effectiveness
Solution Approach 1:
The core parts are designed with preliminary features such as recesses, channels, or grooves that guide and distribute the heat-conducting medium before final assembly. This preliminary structuring ensures that when the medium is applied, it is automatically directed to fill gaps uniformly, eliminating the need for precise manual application and ensuring consistent thermal contact across all joining surfaces.
Solution Approach 2:
The heat-conducting medium may have porous or viscous characteristics that enable it to penetrate and fill irregular gap spaces uniformly. The material properties are selected to ensure self-distribution into complex geometries, allowing the medium to conform to varying gap sizes and shapes while maintaining consistent thermal conductivity throughout the assembly.
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 solution improves heat dissipation and magnetic conductivity by ensuring even distribution of the heat-conducting medium between core parts, thereby enhancing the operational efficiency of inductive components like transformers and transducers.
Implementation Method 1
Waste heat generated in the further core part can thus be conducted to the heat sink via a thermal conduction path comprising the joining surfaces, the heat-conducting medium, and the core parts.
Implementation Method 2
the coil core is configured so as to conduct and/or amplify a magnetic field. Preferably, the core parts are respectively configured so as to conduct a magnetic field on a contact surface formed by the joining surfaces. In this manner, a magnetic flux can advantageously flow through the core parts, and thus a closed magnetic circle can be formed.
Data Source
AI summary
The invention relates to an inductive component. The component comprises a coil core, in particular a ferrite core, and at least one coil winding. The coil core is formed by at least two core parts, or only two core parts, in particular one core part and one additional core part. The core parts form the coil core when assembled. The core parts have respective joining surfaces which are designed to face each other when the core parts are joined. According to the invention, in the inductive component of the aforementioned type, at least one of the core parts has a through-opening. The through-opening is arranged and designed to lead heat-conducting medium into a cavity, in particular a gap, extending between the joining surfaces and to fill said cavity with the heat-conducting medium.