Apparatus and method to improve thermal management for one or more heat generating components within an information handling system
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Solution Overview
Problem
Information handling systems, particularly solid-state drives (SSDs), face challenges in operating effectively at high external ambient temperatures due to insufficient thermal management, which limits their performance and can lead to shutdowns, as existing cooling techniques are inadequate to maintain temperatures below the maximum rating in environments exceeding 70°C.
Innovation Solution
A thermal management solution involving a heat pipe, thermoelectric cooler (TEC), and heat exchanger, where the heat pipe transfers thermal energy from heat generating components to the heat exchanger, and the TEC absorbs excess heat, enabling operation up to the maximum temperature rating by dynamically enabling/disabling based on internal temperature measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If passive cooling techniques (heat sink, thermal pad, metal chassis) are used to draw heat away from the SSD, then cooling effect is achieved at lower ambient temperatures, but the SSD cannot operate at high external ambient temperatures (70°C and above) that exceed its maximum temperature rating
Solution Approach 1:
The patent implements a dynamic thermal management system that transitions from static passive cooling to active dynamic cooling. The TEC (thermoelectric cooler) is controlled based on real-time temperature feedback from the SSD, enabling the system to adaptively adjust cooling intensity according to actual thermal conditions and ambient temperature levels, thereby maintaining reliable SSD operation even in high ambient temperature environments (70°C and above).
Solution Approach 2:
The patent changes the thermal management approach by introducing an active cooling mechanism (TEC) that can dynamically alter thermal parameters. The system monitors SSD temperature and ambient temperature, then adjusts the TEC operation accordingly, transforming the thermal management from a fixed passive state to a variable active state that can maintain SSD temperature within safe operating limits regardless of ambient conditions.
2Temperature
If the TEC is continuously enabled to transfer excess heat from the heat pipe to the heat exchanger, then SSD temperature is maintained within safe limits, but power consumption increases
Solution Approach 1:
The patent implements a feedback-based thermal management system where the controller continuously monitors the SSD temperature and adjusts the TEC operation accordingly. When the SSD temperature exceeds a threshold, the controller enables the TEC to provide active cooling. When the temperature is within acceptable range, the TEC is disabled to save power. This feedback mechanism ensures optimal balance between temperature control and power consumption.
Solution Approach 2:
The patent employs periodic temperature monitoring and intermittent TEC activation rather than continuous operation. The controller periodically checks the SSD temperature and activates the TEC only during periods when cooling is actually needed, transforming continuous energy consumption into periodic, demand-based energy usage while maintaining effective temperature control.
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 heat generating components, such as SSDs, to operate safely and efficiently in high ambient temperatures up to their maximum rating, preventing damage and maintaining system performance, while optimizing power consumption by disabling the TEC when not needed.
Implementation Method 1
a heat pipe thermally coupled between one or more heat generating components of the IHS and the heat exchanger to transfer thermal energy from the one or more heat generating components to the heat exchanger
Implementation Method 2
a thermoelectric cooler (TEC) thermally coupled between the heat pipe and the heat exchanger to transfer excess thermal energy that is not absorbed by the heat pipe to the heat exchanger
Implementation Method 3
a heat exchanger configured to transfer thermal energy from the heat pipe to surroundings external to the IHS
Data Source
AI summary
Apparatuses and methods are provided to improve thermal management for one or more heat generating components within an information handling system (IHS). An embodiment of an apparatus may include a heat pipe, a thermoelectric cooler (TEC), a heat exchanger, a temperature sensor and a controller. The heat pipe is thermally coupled between the heat generating component(s) and the heat exchanger to transfer thermal energy from the one or more heat generating components to the heat exchanger. The TEC is thermally coupled between the heat pipe and the heat exchanger to transfer excess thermal energy that is not absorbed by the heat pipe to the heat exchanger. The temperature sensor measures an internal temperature within the IHS. The controller receives the internal temperature measurement from the temperature sensor and enables/disables the TEC based on the received temperature measurement.