Segmented TEC Array Cooling for Non-Uniform Chip Heat
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Solution Overview
Problem
Thermoelectric cooling devices (TEC) struggle to efficiently manage non-uniform heat distribution across chips, leading to overcooling or undercooling of different areas, which can reduce chip lifespan and increase energy consumption.
Innovation Solution
A TEC device array with multiple TEC devices, controlled by a controller that adjusts cooling rates based on temperature data from thermal sensors, allowing for differential cooling rates across the chip to maintain uniform temperature and heat generation rates by increasing or decreasing power to individual TEC devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a single TEC device cools the entire chip, then cooling coverage is achieved, but energy consumption increases due to overcooling
Solution Approach 1:
The chip cooling area is divided into multiple zones, each served by a separate TEC device. This allows the system to activate only the TEC devices needed for current hot spots, rather than running a single TEC device at high power to cool the entire chip, thereby reducing overall energy consumption.
Solution Approach 2:
The operating current of each TEC device is dynamically adjusted based on real-time temperature measurements. The controller modulates the current to match the actual cooling demand in each region, avoiding the continuous high-power operation that causes energy waste through overcooling.
2Device complexity
If a single TEC device is used, then device simplicity is maintained, but cooling efficiency decreases
Solution Approach 1:
The cooling system is segmented into multiple TEC devices, each optimized for a specific region. This segmentation improves cooling efficiency by concentrating cooling power where needed, overcoming the limitation of a single TEC device that must分散 its cooling capability across the entire chip surface.
Solution Approach 2:
Temperature sensors provide feedback to the controller, which adjusts the current to each TEC device in real-time. This closed-loop control system optimizes cooling efficiency by responding to actual thermal conditions, compensating for the increased system complexity through intelligent 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
This solution dynamically adjusts cooling rates to match non-uniform heat emission patterns, effectively maintaining a uniform temperature across the chip, extending lifespan and reducing energy consumption by optimizing cooling efficiency.
Implementation Method 1
The basic concept behind thermoelectric cooling technology is the Peltier effect. The Peltier effect occurs whenever electrical current flows through two dissimilar conductors. Depending on the direction of current flow, the junction of the two conductors will either absorb or release heat.
Data Source
AI summary
In various embodiments, a TEC device array may be coupled to a chip and a heat sink to cool the chip. The TEC device array may include multiple TEC devices separately controlled to provide different cooling rates at different points in the TEC device array coupled to the chip. In some embodiments, temperature data for areas on the chip or for separate electronic components may be determined using one or more thermal sensors and then sent to a controller. The controller may then determine an appropriate response for the TEC devices in the TEC device array near the area of the thermal sensor(s). The controller may thus control the cooling rates (which may be different) of several TEC devices in the TEC device array.