Composite Heat Dissipation Material for Lightweight Thermal Management

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Solution Overview

Problem

Conventional heat dissipation materials, particularly metal materials, struggle to efficiently dissipate heat in miniaturized electronic devices while maintaining lightweight requirements, leading to potential damage from high temperatures.

Innovation Solution

A composite heat dissipation material is developed, comprising alternating layers of artificial graphite and graphitic heat dissipation materials, which creates a three-dimensional heat dissipation path to efficiently dissipate heat energy generated from a heat source.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If metal materials are used for heat dissipation, then heat dissipation efficiency is improved, but device weight increases

Engineering Contradiction:

Improveheat dissipation efficiencyVSAvoiddevice weight

Core Design Contradiction:

TemperatureVSWeight of moving object

Solution Approach 1:

The patent employs a composite structure consisting of artificial graphite layers and natural graphite layers. This composite material configuration achieves high heat dissipation efficiency comparable to metal materials while significantly reducing device weight, as graphite has much lower density than metals like copper or aluminum.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent optimizes the thermal conductivity parameter by selecting specific graphite materials with different thermal conductivity coefficients. The artificial graphite layer has a thermal conductivity coefficient of 150-200 W/mK, while the natural graphite layer has a thermal conductivity coefficient of 80-150 W/mK, creating a gradient structure that enhances overall heat dissipation performance.

Inventive Principle:

Principle #35Parameter changes

2Weight of moving object

If artificial graphite material is used for heat dissipation, then device weight is reduced, but heat dissipation efficiency decreases

Engineering Contradiction:

Improvedevice weightVSAvoidheat dissipation efficiency

Core Design Contradiction:

Weight of moving objectVSTemperature

Solution Approach 1:

The patent combines artificial graphite and natural graphite in a layered composite structure. The artificial graphite provides lightweight properties and good heat dissipation, while the natural graphite supplements thermal conductivity, achieving a balance between weight reduction and heat dissipation efficiency that neither material could achieve alone.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent applies different graphite materials in different locations within the heat dissipation structure. The artificial graphite layer is positioned to provide primary heat dissipation and weight reduction, while the natural graphite layer is configured to enhance thermal conductivity in specific regions, creating localized quality optimization throughout the structure.

Inventive Principle:

Principle #3Local quality

3Temperature

If multi-layers of artificial graphite are stacked, then heat dissipation path is improved, but manufacturing complexity increases

Engineering Contradiction:

Improveheat dissipation pathVSAvoidmanufacturing complexity

Core Design Contradiction:

TemperatureVSDevice complexity

Solution Approach 1:

The patent divides the heat dissipation structure into segmented layers of artificial graphite and natural graphite. This segmentation creates multiple heat dissipation paths through the layers, improving thermal management while maintaining manageable manufacturing complexity through modular layer construction.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The alternating layer structure of artificial and natural graphite creates a composite material system where the interface between layers provides additional heat dissipation pathways. This composite approach enhances the heat dissipation path without proportionally increasing manufacturing complexity, as the layers can be bonded using standard lamination techniques.

Inventive Principle:

Principle #40Composite materials

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 composite material effectively prevents damage from high temperatures by rapidly dissipating heat energy through both two-dimensional and three-dimensional heat conduction paths, enhancing heat dissipation efficiency while considering manufacturing costs.

Implementation Method 1

The composite heat dissipation material is configured to dissipate a heat energy generated from the heat source... rapidly dissipating the heat energy generated from the heat source... two-dimensional and three-dimensional heat conduction paths

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentUS12263669B2Composite heat dissipation material

Publication Date: 2025.04.01 WAH HONG INDAL CORP

AI summary

The composite heat dissipation material comprises at least one artificial graphite layer and a graphitic heat dissipation layer. The graphitic heat dissipation layer includes a graphite material layer, and the graphite material layer is not formed from artificial graphite materials. Further, the graphitic heat dissipation layer is bonded to the artificial graphite layer. The composite heat dissipation material of the present application can efficiently and rapidly dissipate heat energy produced from a heating source, thereby lowering temperature thereof.