Active Heat-Dissipation System for Base Station Thermal Management

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Solution Overview

Problem

Conventional heat-dissipation methods for base stations, especially those in narrow and enclosed spaces, are inefficient due to the mixing of cold air with surrounding air, leading to ineffective cooling of high-efficiency chips and electronic elements.

Innovation Solution

An active heat-dissipation system comprising a controller, power module, and heat-dissipation module that uses adaptive fuzzy control or wavelet neural network algorithms to optimize temperature control, incorporating a cooling chip, variable fan, heat pipe, and vapor chamber for enhanced heat exchange and air flow, ensuring rapid temperature convergence.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If conventional heat-dissipation methods use air conditioners to cool down surrounding temperature and guide cold air through natural or forced convection, then the base station environment can be cooled, but the cold air mixes with surrounding air before reaching heat sources, reducing cooling effectiveness

Engineering Contradiction:
Improvecooling effectivenessVSAvoidheat-dissipation efficiency
Core Design Contradiction:
TemperatureVSLoss of energy

Solution Approach 1:

The patent extracts the cold air directly from the air conditioner's exhaust outlet and delivers it directly to the heat sources (chips and electronic elements) without allowing it to mix with the surrounding air. This is achieved by positioning heat-dissipation modules at the exhaust outlet and using directed airflow paths to transport the coldest air directly to where it is needed most.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent introduces heat-dissipation modules (including fans, heat pipes, and vapor chambers) as intermediaries between the air conditioner's cold air exhaust and the heat sources. These modules actively transport and direct the cold air, ensuring it reaches the chips and electronic elements without mixing with warmer surrounding air, thereby maintaining cooling effectiveness.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Productivity

If high-efficiency chips and electronic elements are placed in narrow and enclosed spaces to improve base station efficiency and minimize size, then space utilization is improved, but heat dissipation becomes difficult due to poor air flow

Engineering Contradiction:
Improvebase station efficiencyVSAvoidheat dissipation capability
Core Design Contradiction:
ProductivityVSTemperature

Solution Approach 1:

The patent segments the heat-dissipation function into multiple distributed modules placed throughout the narrow and enclosed space. Each heat-dissipation module includes local fans, heat pipes, and vapor chambers that independently manage heat removal from specific chips and electronic elements, enabling effective cooling despite the confined space constraints.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent employs heat pipes and vapor chambers that utilize phase change and capillary action to transfer heat in three dimensions, not just through air convection. This allows heat to be moved from chips to heat-dissipation modules through condensed phases, overcoming the limitations of narrow spatial constraints and enabling effective heat removal from densely packed components.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Ease of operation

If cold air is exhausted by air conditioner and then mixed with surrounding air before heat-dissipation, then the cooling process is simplified, but the coldest air cannot be effectively utilized for cooling heat sources

Engineering Contradiction:
Improvecooling process simplicityVSAvoidheat source cooling effectiveness
Core Design Contradiction:
Ease of operationVSTemperature

Solution Approach 1:

The patent performs preliminary action by positioning heat-dissipation modules directly at the air conditioner's exhaust outlet, where the coldest air is available. The modules immediately capture and direct this cold air to heat sources before any mixing with surrounding air can occur, preserving the maximum temperature differential for effective cooling.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent implements feedback control through temperature sensors that monitor the temperature of air reaching heat sources and the operation status of heat-dissipation modules. The controller adjusts fan speeds and module activation based on real-time temperature data, optimizing the direct delivery of cold air to maintain maximum cooling effectiveness while adapting to changing thermal conditions.

Inventive Principle:
Principle #23Feedback

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 system achieves improved heat dissipation efficiency by adaptively controlling temperature convergence, effectively cooling high-efficiency chips and electronic elements in confined spaces, outperforming traditional methods by ensuring the coldest air is directly utilized for heat sources.

Implementation Method 1

heat pipe

Methodology Applied
Scientific EffectHeat pipe: Heat Pipe

Implementation Method 2

heat-dissipation module comprises a cooling chip, a variable fan, a heat pipe and a vapor chamber

Methodology Applied
Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 3

vapor chamber

Methodology Applied
Scientific EffectPhase change: Phase Change

Implementation Method 4

heat-dissipation module comprises a cooling chip, a variable fan, a heat pipe and a vapor chamber for enhanced heat exchange

Methodology Applied
Scientific EffectHeat exchange: Heat Exchanger

Implementation Method 5

variable fan

Methodology Applied
Scientific EffectForced convection: Forced Convection

Implementation Method 6

ensuring rapid temperature convergence

Methodology Applied
Scientific EffectAir flow: Convection

Data Source

PatentEP3709521B1Active heat-dissipation system and controlling method thereof
Publication Date: 2021.07.14 NAT CHUNG SHAN INST SCI & TECH
  • EP3709521B1 patent drawingFigure 1
  • EP3709521B1 patent drawingFigure 2
  • EP3709521B1 patent drawingFigure 3

AI summary

An active heat-dissipation system (10) for a base station of a communication system includes a measuring module (4), configured to detect a temperature sensing signal of the base station; a controller (1), configured to receive the temperature sensing signal detected by the measuring module (4) to set a preset temperature signal, to generate a difference between the temperature sensing signal and the preset temperature signal and a time derivative of the difference, and to output a control signal according to the difference and the time derivative of the difference based on a control program; and a power module (2), configured to receive the control signal and output an electrical signal to a heat-dissipation module (3) according to the control signal, such that the heat-dissipation module (3) performs a heat-dissipation process for the base station according to the electrical signal.