Fan Airflow Segmentation for 5G Device Thermal Management
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Solution Overview
Problem
5G electronic devices generate higher heat compared to their 4G counterparts, necessitating effective heat dissipation solutions to maintain performance, particularly in devices like mobile network routers and smartphones.
Innovation Solution
An electronic device design incorporating a casing, motherboard, battery, fan, and heat dissipation module, where the fan creates independent airflow outlets to facilitate heat dissipation from the motherboard and reduce heat impact on the battery by directing airflow through both spaces defined by the motherboard and casing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a fan is added to facilitate heat dissipation in 5G electronic devices, then heat dissipation performance is improved, but device complexity increases
Solution Approach 1:
The fan is divided into multiple independent airflow outlets (first airflow outlet and second airflow outlet) that can be independently controlled. Each airflow outlet directs air to different spaces (first space above motherboard, second space below motherboard), allowing targeted heat dissipation for different components without requiring multiple separate fans, thus improving heat dissipation performance while controlling device complexity
Solution Approach 2:
A single fan unit performs multiple heat dissipation functions by directing airflow through different outlets to different spaces. The fan simultaneously cools components above the motherboard through the first airflow outlet and components below the motherboard through the second airflow outlet, making one component serve multiple heat dissipation purposes and reducing overall device complexity
2Temperature
If airflow is directed to cool components above the motherboard, then heat dissipation for those components is improved, but heat may still affect the battery below the motherboard
Solution Approach 1:
The heat dissipation system is segmented into two independent airflow paths: the first airflow outlet directs air to the first space above the motherboard to cool components there, while the second airflow outlet directs air to the second space below the motherboard to cool the battery and other components. This segmentation ensures that heat dissipation for components above the motherboard does not compromise the thermal environment for the battery below
Solution Approach 2:
The motherboard acts as an intermediary barrier that physically separates the first space and second space, preventing hot air from the first space from directly reaching the battery in the second space. The independent airflow outlets ensure that cooling air is delivered directly to each space without contamination from the other, protecting the battery from heat generated by components above the motherboard
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 solution effectively dissipates heat from components above the motherboard and reduces heat-generated stress on the battery, enhancing overall device performance and reliability.
Implementation Method 1
the fan outputs the airflow to the first space defined by the motherboard and the casing and the second space defined by the motherboard and the battery
Implementation Method 2
The heat dissipation module is arranged in the casing and transfer heat from the motherboard to the second airflow outlet
Data Source
AI summary
An electronic device includes a casing, a motherboard, a battery, a fan, and a heat dissipation module. The motherboard is arranged in the casing, and defines a first space with the casing. The battery is arranged in the casing and defines a second space with the motherboard. The motherboard separates the first space and the second space. The fan is arranged in the casing and has a first airflow outlet and a second airflow outlet independent of the first airflow outlet. The first airflow outlet communicates with the first space and the second space. The heat dissipation module is arranged in the casing and transfers heat from the motherboard to the second airflow outlet.