Active Cooling for Downstream Electronic Assemblies
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Solution Overview
Problem
Computing systems, such as servers, face overheating issues due to inefficient heat removal from electronic components, leading to performance reduction and potential shutdowns, especially in OCP modules positioned downstream of the power supply unit where airflow is reduced.
Innovation Solution
An active cooling device is thermally coupled to a printed circuit board in the electronic assembly, which includes heat-generating components and optical transceivers, and is controlled by a baseboard management controller to adjust fan speeds based on temperature readings, ensuring effective heat dissipation through an air duct.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional passive cooling solutions such as air ducts and baffles are used, then the structure is simple and easy to manufacture, but the cooling effectiveness is insufficient leading to performance reduction
Solution Approach 1:
The patent applies dynamics by transitioning from static passive cooling structures to dynamic active cooling systems with controllable fans that adjust airflow based on real-time temperature conditions, thereby improving cooling effectiveness while maintaining manageable system complexity through controlled adaptability
Solution Approach 2:
The cooling system incorporates temperature sensors and control logic that enable the system to self-regulate cooling airflow based on detected temperature conditions, eliminating the need for external manual intervention while maintaining optimal cooling effectiveness
2Volume of moving object
If the OCP module is positioned downstream of the power supply unit, then the layout is compact and space-efficient, but the airflow is reduced causing overheating
Solution Approach 1:
The patent uses dynamic airflow control through controllable fans that adjust their operation based on temperature sensors, enabling the compact downstream positioning of OCP modules while actively managing heat removal to prevent overheating in the constrained space
Solution Approach 2:
The system implements feedback control by using temperature sensors to monitor thermal conditions and adjusting fan operation accordingly, allowing compact module positioning while maintaining acceptable temperature levels through closed-loop thermal management
3Temperature
If fan speed is increased to improve cooling, then heat dissipation is enhanced, but energy consumption increases
Solution Approach 1:
The patent applies dynamics by using variable speed fans that adjust their rotation speed based on real-time temperature conditions, enabling optimized heat dissipation while minimizing energy consumption by matching fan output to actual cooling requirements rather than operating at constant high speed
Solution Approach 2:
The system changes operational parameters by adjusting fan speed dynamically based on temperature sensor feedback, allowing the cooling system to adapt its energy consumption and heat dissipation rate to match actual thermal conditions, thereby optimizing the balance between cooling performance and energy usage
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 active cooling device efficiently removes heat from the electronic assembly, maintaining system performance and reducing the risk of shutdowns by dynamically adjusting airflow to manage temperature fluctuations.
Implementation Method 1
an active cooling device thermally coupled to the printed circuit board
Implementation Method 2
an air duct disposed over the printed circuit board
Data Source
AI summary
Embodiments of the disclosure relate to active cooling devices for cooling an electronic assembly positioned downstream in a computing system. In one embodiment, an electronic assembly positioned downstream of the computing system is disclosed. The electronic assembly includes a printed circuit board electrically connected to the computing system; an air duct disposed over the printed circuit board; and an active cooling device thermally coupled to the printed circuit board. The printed circuit board includes a transceiver socket configured to receive at least one optical transceiver and one or more heat-generating components disposed thereon. The at least one optical transceiver is configured to mate with an active optical cable.