Adaptive Heat Dissipation Using Thermally-Expansive Materials

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Solution Overview

Problem

Electronic components designed for industrial-grade temperature ranges are expensive and inefficient in low ambient temperatures, as they often waste energy through heat dissipation mechanisms and require special heat retention designs.

Innovation Solution

An adaptive heat dissipation apparatus using thermally-expansive materials that expand to fill a chamber volume and conduct heat at high temperatures, while contracting to create an air gap and reduce heat dissipation at low temperatures, allowing for the use of commercial-grade components across a broad temperature range without energy wastage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If heating of electronic components is used during low ambient temperatures to keep components in a relatively-high temperature range, then component operation is improved, but energy is wasted through heat dissipation mechanisms

Engineering Contradiction:

Improvecomponent operationVSAvoidenergy waste

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The patent implements a dynamic thermal management system that automatically adjusts heat dissipation based on ambient temperature conditions. The system transitions between active cooling and passive insulation modes, optimizing energy efficiency while maintaining component reliability across varying temperature environments.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes thermal parameters (heat dissipation rate, insulation level) based on ambient temperature thresholds. When ambient temperature is low, the system reduces heat dissipation parameters to prevent energy waste; when ambient temperature is high, it increases heat dissipation parameters to maintain component operation within safe temperature ranges.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If electronic components are specially designed to retain heat, then component operation at low temperatures is improved, but component cost increases

Engineering Contradiction:

Improvecomponent operationVSAvoidcomponent cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent employs universal thermal management strategies that work across both heating and cooling scenarios. The same system architecture and control logic handle both heat retention (at low ambient temperatures) and heat dissipation (at high ambient temperatures), eliminating the need for separate specialized components and reducing overall system cost.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system uses the electronic components themselves as both heat sources and heat sinks. The components' own operational heat is utilized to maintain temperature during cold conditions, reducing or eliminating the need for external heating elements and associated costs.

Inventive Principle:

Principle #25Self-service

3Adaptability or versatility

If electronic components are designed for industrial grade temperature range, then broad temperature range operation is achieved, but component cost increases significantly

Engineering Contradiction:

Improvetemperature rangeVSAvoidcomponent cost

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent uses commercial-grade components with shorter temperature ratings but extends their effective operating range through the thermal management system. Rather than using expensive industrial-grade components designed for broad temperature ranges, the system protects cheaper components by actively managing their thermal environment, achieving the same practical result at lower cost.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

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 heat retention and dissipation across varying ambient temperatures, reducing component costs and energy waste, while maintaining effective operation of electronic devices.

Implementation Method 1

the thermally-expansive material expanding to substantially fill the chamber volume at an ambient temperature above a predetermined temperature threshold

Methodology Applied

Scientific EffectThermal expansion: Thermal Expansion

Implementation Method 2

conducting heat from the heat source to the heat conducting surface

Methodology Applied

Scientific EffectHeat conduction: Conduction (thermal)

Implementation Method 3

the thermally-expansive material contracting to leave an air gap when the ambient temperature is below the predetermined temperature threshold

Methodology Applied

Scientific EffectThermal contraction: Thermal Contraction

Data Source

PatentUS10004160B1Adaptive heat dissipation

Publication Date: 2018.06.19 FUTUREWEI TECHNOLOGIES INC

AI summary

An adaptive heat dissipation apparatus is provided, including two or more chamber walls forming a chamber volume having a first open side and a second open side, a heat source positioned at the first open side of the chamber volume, a heat conducting surface positioned at the second open side of the chamber volume, and a thermally-expansive material occupying a predetermined portion of the chamber volume. The thermally-expansive material expands to substantially fill the chamber volume at an ambient temperature above a predetermined temperature threshold and conducts heat from the heat source to the heat conducting surface. The thermally-expansive material contracts to leave an air gap when the ambient temperature is below the predetermined temperature threshold.