Thaum tshav kub kub dissipation ntawm high-power LEDs
LED yog ib qho khoom siv optoelectronic, tsuas yog 15% ~ 25% ntawm lub zog hluav taws xob yuav raug hloov mus rau lub teeb lub zog thaum nws ua haujlwm, thiab qhov seem ntawm lub zog hluav taws xob yuav luag.yog hloov dua siab tshiab rau hauv lub zog cua sov, ua kom qhov kub ntawm LED siab dua. Nyob rau hauv high-power LEDs, tshav kub dissipation yog ib qho teeb meem loj uas yuav tsum tau tshawb xyuas tshwj xeeb. Piv txwv li, yog hais tias lub photoelectric conversion efficiency ntawm 10W dawb LED yog 20% raws li tau hais los saum no, uas yog, 8W ntawm hluav taws xob hluav taws xob hloov dua siab tshiab rau hauv tshav kub. Yog tias tsis muaj qhov ntsuas kub dissipation ntxiv, qhov tseem ceeb ntawm lub zog hluav taws xob LED yuav nce sai heev. Thaum nws tus nqi TJ Thaum qhov nce siab tshaj qhov siab tshaj qhov ntsuas kub (feem ntau yog 150 ℃), lub zog hluav taws xob LED yuav raug puas vim overheating. Yog li ntawd, nyob rau hauv lub tsim ntawm high-power ED teeb, qhov tseem ceeb tshaj plaws tsim kev ua hauj lwm yog lub tshav kub dissipation tsim.
Tsis tas li ntawd, nyob rau hauv cov cua kub dissipation xam ntawm cov khoom siv hluav taws xob dav dav (xws li cov khoom siv hluav taws xob 1C), tsuav yog qhov kub ntawm qhov sib txuas tsawg dua qhov siab tshaj qhov sib txuas qhov kub (feem ntau 125 ° C), nws txaus. Tab sis nyob rau hauv high-power LED tshav kub dissipation tsim, TJ VALUE yuav tsum tau qis dua 125 ℃. Yog vim li cas yog tias TJ muaj kev cuam tshuam zoo rau lub teeb rho tawm thiab lub neej ntev ntawm LED: qhov siab dua TJ, qhov qis dua lub teeb rho tawm thiab lub neej luv ntawm LED.
Thaum tshav kub kub dissipation txoj kev ntawm lub zog siab LED.
High-power LEDs tseem ceeb heev rau cov cua kub dissipation hauv kev tsim qauv. Qee tus neeg tsim qauv muaj cov hlau loj kub dissipation ncoo nyob rau hauv qhov tuag, uas tuaj yeem ua rau cov cua sov ntawm cov tuag kis mus rau sab nraud los ntawm cov cua kub dissipation ncoo. High-power LEDs yog soldered rau ntawm ib tug luam board (PCB). Lub hauv qab ntawm lub tshav kub dissipation ncoo yog welded nrog tooj liab-clad nto ntawm PCB, thiab lub loj tooj liab-clad txheej yog siv raws li lub tshav kub dissipation nto. Txhawm rau txhim kho cov cua sov kom zoo, siv ob txheej tooj liab-clad PCB. Qhov no yog ib qho ntawm cov txheej txheem thermal dissipation.
Post lub sij hawm: Mar-02-2022
