Inductive Component Molded Body Heat Sink Integration
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Solution Overview
Problem
Existing inductive components face challenges in minimizing size due to magnetic energy storage and heat dissipation limitations, as they require larger dimensions to effectively manage heat losses.
Innovation Solution
An inductive component design featuring a molded body with a thermally conductive surface complementary to a heat sink, allowing direct thermal coupling and improved heat dissipation, where the molded body is formed around the coil using a thermally conductive plastic material and optionally enhanced with a flexible thermally conductive layer for enhanced heat sink adhesion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a complete housing is used to enclose the coil, then mechanical protection is improved, but manufacturing cost and device complexity increase
Solution Approach 1:
The patent merges the housing function with the molded body by having the molded body extend to form at least a portion of the housing. This integration eliminates the need for a separate complete housing structure, reducing manufacturing steps and costs while maintaining mechanical protection. The molded body serves dual purposes: encapsulating the coil and providing structural enclosure.
Solution Approach 2:
The molded body is designed to perform multiple functions simultaneously: it provides mechanical support for the coil, serves as a mounting surface for the heat sink, forms part of the housing structure, and enables thermal management. This multi-functionality reduces the overall component count and simplifies the device architecture.
2Temperature
If a thermally conductive molded body is used to connect the heat sink directly to the coil, then heat dissipation is improved, but manufacturing complexity increases
Solution Approach 1:
The patent combines the thermal interface material function with the molded body by incorporating thermally conductive material directly into the molded body structure. This eliminates the need for separate thermal paste or pad applications, simplifying the assembly process while maintaining effective thermal coupling between the heat sink and coil.
Solution Approach 2:
The molded body utilizes composite materials with good thermal conductivity to achieve efficient heat transfer. By selecting appropriate thermally conductive materials for the molded body, the patent enables direct thermal coupling between the heat sink and coil without requiring complex multi-layer thermal management structures.
3Stability of the object's composition
If the molded body completely pots the coil, then mechanical stabilization is improved, but heat dissipation capability deteriorates
Solution Approach 1:
The patent segments the molded body into different regions with different functions: one portion encapsulates the coil for mechanical stabilization, while another portion extends to form a flat mounting surface for the heat sink. This segmentation allows the coil to be fully supported while maintaining thermal pathways for effective heat dissipation through the extended molded body portion.
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 enhances thermal conductivity, reduces component size by improving heat dissipation, and allows for efficient electrical insulation and mechanical stabilization, while maintaining cost-effectiveness by not requiring a complete housing.
Implementation Method 1
The molded body has a material having good thermal conductivity. For example, said material is a plastic material, in particular polyurethane. The plastic material can be provided for the purpose of increasing the thermal conductivity with a filler having good thermal conductivity.
Implementation Method 2
The physical size of inductive components is determined by the required storage capacity of magnetic energy
Data Source
AI summary
An inductive component having a coil with a winding of a wire and a molded body adhering to the coil. The molded body has a surface for the arrangement of a heat sink. A method for producing such a component is also specified, in which, to produce the molded body, a mold is filled with a potting material and the mold is subsequently removed.