Coil Component Heat Dissipation Structure for Core Temperature Control
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Solution Overview
Problem
Existing coil components in switching power supply devices face challenges in effectively dissipating heat generated by the coil and core, leading to temperature rises that can degrade the magnetic element's characteristics and reduce reliability.
Innovation Solution
A coil component with a heat dissipation structure comprising a first and second magnetic core, a winding with a hollow core, and heat dissipation metal plates with specific heat conduction and plane portions, where the metal plates are closely attached to the cores to facilitate efficient heat transfer and reduce temperature differences, using a simple and high-performance design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If heat is radiated via the upper core and lower core in an inductance element, then the heat dissipation path is provided through the core, but the core temperature rises and becomes too high causing characteristics deterioration or saturation
Solution Approach 1:
The heat dissipation function is segmented from the core by introducing separate heat dissipation metal plates (first and second heat dissipation metal plates) that are closely attached to the upper and lower cores. These plates provide dedicated heat dissipation paths independent of the core, allowing heat to be dissipated without raising the core temperature to problematic levels.
Solution Approach 2:
Heat dissipation metal plates serve as intermediary components between the cores and the heat dissipation path. The plates are thermally connected to the cores through close attachment and conduct heat away from the cores to external heat sinks, preventing direct heat accumulation in the core while maintaining effective heat dissipation.
2Loss of energy
If heat dissipation metal plates are added to the coil component, then heat dissipation performance is improved, but the device structure becomes more complex
Solution Approach 1:
The heat dissipation metal plates are merged with the existing core structure through close attachment, forming an integrated heat dissipation system. The plates are positioned to work in conjunction with the magnetic shielding sheets and core, creating a unified structure that achieves effective heat dissipation without requiring separate independent components or complex assembly mechanisms.
Solution Approach 2:
The heat dissipation metal plates serve multiple functions: they provide thermal conduction paths for heat dissipation, act as structural support elements, and work in conjunction with magnetic shielding sheets to manage both thermal and magnetic fields. This multi-functionality reduces the need for additional dedicated components, simplifying the overall device 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
The proposed solution effectively suppresses the temperature rise of the magnetic core, enhancing the reliability and performance of the switching power supply device by ensuring efficient heat dissipation through the use of thermally connected heat dissipation metal plates and a metal substrate.
Implementation Method 1
the first heat conduction portion is connected to the second heat conduction portion... the heat dissipated to the first heat dissipation metal plate and the second heat dissipation metal plate goes through the connection portion of the first heat conduction portion... and the second heat conduction portion
Implementation Method 2
dissipating the heat of the first magnetic core and the second magnetic core to the first heat dissipation metal plate and the second heat dissipation metal plate... the temperature rise of the core can be effectively suppressed
Data Source
AI summary
A coil component includes: first and second magnetic cores having first and second flat plate portions; a winding having a hollow core portion; first and second heat dissipation metal plates having first and second heat dissipation plane and first and second heat conduction portions, at least either one of the first and second flat plate portions has a middle leg, the middle leg is inserted into the hollow core portion of a winding, and the first magnetic core and the second magnetic core are combined in such a way that the first flat plate portion and the second flat plate portion face each other, the first heat dissipation plane portion is closely attached to the first flat plate portion and the second heat dissipation plane portion is closely attached to the second flat plate portion, the first heat conduction portion is connected to the second heat conduction portion.