本文關(guān)鍵詞： 強化傳熱 離子風(fēng) 電暈放電 大功率LED 結(jié)溫　出處：《電子器件》2016年06期 　論文類型：期刊論文

【摘要】：針對功率型LED芯片傳統(tǒng)散熱方案能耗高、散熱效率低的缺陷,設(shè)計了一種線-網(wǎng)電極離子風(fēng)發(fā)生器,并通過試驗研究其工作性能。以LED芯片的引腳溫度和離子風(fēng)風(fēng)速為目標(biāo)參量,探尋發(fā)生器在不同線電極數(shù)、放電間距及電源極性時的散熱系統(tǒng)的工作特性.結(jié)果表明:發(fā)生器采用8線電極形式,放電間距為10 mm,電暈電流為0.3 m A時,散熱效果最佳,系統(tǒng)功耗較低;相同電壓下,負(fù)電暈放電時產(chǎn)生的離子風(fēng)速高于正電暈放電;與自然對流方式相比,LED芯片引腳溫度最大降幅為36℃,散熱效果較為明顯.
[Abstract]:Aiming at the disadvantages of high energy consumption and low heat dissipation efficiency in the traditional heat dissipation scheme of power LED chip, a line-grid electrode ion wind generator is designed. With the lead temperature of LED chip and the wind speed of ion wind as the target parameters, the number of electrodes in different lines of the generator is explored. The working characteristics of the heat dissipation system with discharge spacing and polarity of power supply are obtained. The results show that when the generator adopts the form of 8-wire electrode, the discharge distance is 10 mm, the corona current is 0.3 Ma, the heat dissipation effect is the best, and the power consumption of the system is low. The ion velocity of negative corona discharge is higher than that of positive corona discharge. Compared with natural convection mode, the maximum drop of lead temperature of LED chip is 36 鈩，

本文編號：1550754