Data Storage Device Thermal Management Through Segmented Airflow
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The inefficiency of heat dissipation in data storage devices due to increased components on printed circuit boards, varying component heights and orientations causing air flow turbulence, and the need for higher conductivity thermal interface materials leading to increased costs and reduced performance.
Innovation Solution
A data storage device design with specific airflow channels and component arrangement, including angled inlets and outlets, and passive and active component segregation to optimize airflow and reduce turbulence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of components on the PCBA is increased, then the performance and functionality of the SSD is improved, but the efficiency of heat dissipation decreases
Solution Approach 1:
The housing is divided into three sections (first, second, and third sections) with different cross-sectional areas, creating a segmented airflow path that efficiently routes air through regions with varying heat generation densities. Active components are concentrated in the second section while passive components are distributed in the first and third sections, optimizing thermal management for each component type.
Solution Approach 2:
The housing provides different cross-sectional areas at different locations along the airflow path. The second section has a smaller cross-sectional area to create higher velocity airflow through the active component region, while the first and third sections have larger cross-sectional areas. This local variation in geometry optimizes heat dissipation where it is most needed.
2Temperature
If thermal interface material with higher conductivity is used, then heat dissipation efficiency is improved, but production cost increases
Solution Approach 1:
The patent extracts the thermal management function from the thermal interface material and implements it through the housing geometry itself. By designing the housing with varying cross-sectional areas and specific airflow channels, the structure itself becomes the thermal management solution, eliminating the need for expensive high-conductivity thermal interface materials.
Solution Approach 2:
The invention uses standard, cost-effective thermal interface materials instead of expensive high-conductivity alternatives. The superior heat dissipation performance is achieved through the engineered airflow path in the housing rather than through expensive materials, providing a more economical manufacturing solution.
3Temperature
If thermal interface material is applied onto active components, then thermal contact is improved, but free air gaps are closed resulting in more air turbulence
Solution Approach 1:
Instead of completely filling all air gaps with thermal interface material, the patent applies thermal interface material selectively to ensure adequate thermal contact while leaving sufficient air gaps open to maintain stable airflow. This partial application approach balances thermal contact needs with airflow stability requirements.
4Quantity of substance
If active components are arranged with differing heights and orientations, then component density is improved, but air flow turbulence increases
Solution Approach 1:
The patent extracts the heat-generating active components and concentrates them in a specific region (the second section) with a smaller cross-sectional area. This concentration allows for optimized airflow velocity in the high-heat-generation zone while maintaining component density, rather than distributing components with varying heights throughout the entire housing.
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
Enhances heat dissipation efficiency by directing airflow through the device with reduced turbulence, maintaining performance while minimizing material costs.
Implementation Method 1
Air flow produced by cooling fans in a server may not be able to flow through the SSD
Implementation Method 2
replacing the thermal interface material of the PCBA with a thermal interface material having a higher conductivity grade
Data Source
AI summary
Thermal management of data storage devices in a server. In one example, a data storage device with a housing includes a first section, a second section, a third section, at least one first aperture that defines an airflow inlet, and at least one second aperture that defines an airflow outlet. A printed circuit board assembly (“PCBA”) disposed in the housing includes passive components arranged in a first area corresponding to the second section and active components arranged a second area and a third area corresponding to the first section and the third section, respectively. The airflow inlet and the airflow outlet direct airflow through an airflow channel in the second section of the housing. The airflow channel has a first cross-sectional area between the PCBA and the second section of the housing that is larger than a second cross-sectional area between the PCBA and the first section of the housing.