散熱模組之熱阻值快速預測理論分析與量測

A Quick Thermal Test Theory (Q.T.T.) for Coolers and Thermal Modules

江志偉(Jhih-Wei Jiang)

指導教授 ： 林唯耕

國立清華大學/原子科學院/工程與系統科學系/碩士(2006年)

https://doi.org/10.6843/NTHU.2006.00226

摘要

目前，電腦所利用的散熱元件皆脫離不了使用散熱模組，而散熱模組的效能則是取決於其本身的熱阻值，現今市面上多有結構複雜且加裝熱管的散熱模組，往往其良率不是很穩定，所以出廠的檢測是必要的，而傳統方法須單機七、八十台且等待時間長，並不符合經濟效應。本文主要目的，在提供一套創新且能快速預測散熱模組之熱阻值的理論及量測平台，並使量測儀器操作連續化，以便使其適用於大量生產散熱模組的單位供快速檢測。另外，針對理論預測值與傳統標準量測法做比較，獲取相較誤差值作為其可靠度驗證和不同散熱模組之間的差異做討論。
經由本文研究開發出的量測平台與理論，從實驗結果驗證比較後發現，此法所得之熱阻值與傳統量測法誤差在5％以內，散熱模組於六個工作站之實驗重現性也在10％之內，測試時間能有效的在300秒內完成，操作及等待時間則可大大縮小至30 秒內完成。大幅改善傳統法往往需費時30分鐘以上的缺點。

關鍵字

散熱模組 ； 熱阻

並列摘要

At present, cooling technologies for most computer products reply on coolers and thermal modules are more and more important. The abilities of heat removal of coolers and thermal modules depend on the thermal resistance. Advanced cooling technologies in the form of heat pipes are already widely used during this decade. However, the full test for all the components does mean the thermal modules set or the cooler not defect. In another word, the full test procedures for the thermal modules or the cooler in the factories are necessary. Normally, completing the thermal resistance measurement takes a long time which is above 30 minutes traditionally. In this paper, we propose a quick thermal test theory and novel instrument that have been developed for measuring the thermal resistance of coolers and thermal modules. The continue type design can achieve the thermal resistance measurement on the mass production line. In order to obtain the compared deviation, the comparisons between theoretical prediction and traditional standard method are also focus in this study. In addition, this study also discusses the reliability in different coolers.
The method is based on the evaluation of the thermal resistance, obtained by the Q.T.T. theory. The standard deviation of experiment results is in about 5％. The repeatability of experiment results is within 10%. This instrument can accomplish measurement effectively in 30 seconds. In conclusion, the main advantages of this method are the simplicity and speedy.

參考文獻

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