Removable NVMe Drive Cooling via Wedge-Actuated Thermal Pad
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Solution Overview
Problem
Existing cooling systems for removable non-volatile memory drives face challenges in managing high temperatures without forced airflow, leading to performance throttling and mechanical wear issues due to repeated insertions and removals, especially in rugged and high-power applications.
Innovation Solution
A cooling system design featuring a module cage with a guide rail mating feature that prevents contact with a thermal pad until the module reaches its operating position, using a thermally conductive interface layer with an abrasion resistance overlay and a heat pipe to direct heat away from the module cage to a fan housing, ensuring effective heat dissipation and mechanical durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the removable non-volatile memory module is inserted into the module cage, then the module can be cooled by contact with the thermal pad, but repeated insertions and removals cause mechanical wear to the thermal pad
Solution Approach 1:
The guide rail mating feature is designed to prevent contact between the removable module and thermal pad during insertion and removal operations. The thermal pad is positioned such that contact only occurs when the module is fully inserted into its operating position, thereby cushioning the thermal pad from mechanical wear during frequent insertions and removals while maintaining cooling effectiveness during operation
Solution Approach 2:
The guide rail mating feature acts as an intermediary mechanism that controls the interaction between the removable module and thermal pad. It mediates the contact process by allowing contact only at the fully inserted position, thereby protecting the thermal pad from direct mechanical wear during insertion and removal cycles
2Productivity
If the module operates at high temperatures, then performance throttling is avoided, but heat dissipation becomes more difficult without forced airflow
Solution Approach 1:
The cooling system replaces forced airflow (mechanical convection) with direct thermal conduction through the thermal pad. The thermal pad provides a solid thermal pathway from the removable module to the module cage, enabling effective heat dissipation without relying on forced air movement, thereby maintaining performance at high temperatures
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 operation at higher temperatures (up to 63°C) without throttling and supports high cycle counts of insertions and removals, maintaining performance and mechanical integrity in rugged environments.
Implementation Method 1
the thermal pad may include a thermally conductive interface layer to conduct heat away from the removable non-volatile memory module
Implementation Method 2
a heat pipe physically coupled to the metal plate to direct heat away from the thermal pad
Data Source
AI summary
An information handling system may include a removable non-volatile memory module, including a non-volatile memory drive and a guide rail, and a module cage configured to receive the removable module. The module cage may include a thermal pad and a guide rail mating feature into which the guide rail of the removable module is inserted during installation to maneuver the removable module into an operating position. The guide rail mating feature may prevent the removable module from contacting the thermal pad until the removable module reaches, or nears, its operating position, at which point a wedge feature of the guide rail mating feature may press the removable module downward to contact the thermal pad. The thermal pad may include an abrasion resistance overlay. The module cage may include a metal plate below the thermal pad coupled to a heat pipe that directs heat toward a fan housing.