Muaj peb txoj hauv kev ua kom txias lub zog module

Muaj peb txoj hauv kev rau lub zog hluav taws xob hloov hluav taws xob los ntawm thaj chaw kub siab mus rau qhov chaw kub qis: hluav taws xob, kev sib kis, thiab kev sib txuas.

Radiation: Electromagnetic induction hloov ntawm tshav kub ntawm ob yam khoom sib txawv ntawm qhov kub thiab txias.

Kev xa mus: Hloov cov cua sov los ntawm cov khoom nruab nrab.

Convection: Hloov cov cua sov los ntawm cov kua nruab nrab (cua).

1, hluav taws xob kub dissipation

Thaum ob qhov sib txawv ntawm qhov sib txawv ntawm qhov kub thiab txias tau ntsib, qhov kev hloov pauv hluav taws xob txuas ntxiv ntawm cov cua sov yog tshwm sim.

Qhov kawg cuam tshuam ntawm hluav taws xob ntawm qhov kub ntawm qee yam khoom nyob ntawm ntau yam: qhov kub ntawm qhov sib txawv ntawm txhua qhov sib txawv, kev taw qhia ntawm cov khoom muaj feem xyuam, qhov smoothness ntawm qhov chaw ntawm cov khoom thiab qhov sib txawv ntawm lawv.

Vim tias tsis muaj txoj hauv kev los ntsuas qhov ntsuas no, ua ke nrog kev cuam tshuam ntawm radiant kinetic zog pauv ntawm ib puag ncig ib puag ncig nws tus kheej, nws yog ib qho nyuaj rau kev xam qhov kev puas tsuaj ntawm hluav taws xob kub, uas yog qhov nyuaj thiab nyuaj rau kev xam kom raug.

Hauv daim ntawv thov tshwj xeeb ntawm kev hloov hluav taws xob hloov hluav taws xob tswj module, nws tsis zoo li tias qhov hluav taws xob hluav taws xob tawg yog siv los ua hom cua txias ntawm converter ib leeg.

Feem ntau, cov hluav taws xob hluav taws xob tsuas yog dissipates 10 feem pua ​​lossis tsawg dua ntawm tag nrho cov cua sov. Yog li ntawd, cov hluav taws xob cua sov dissipation feem ntau tsuas yog ua ib txoj hauv kev ntxiv rau qhov tseem ceeb ntawm cov cua sov dissipation txoj kev, thiab cov txheej txheem thermal tsim feem ntau tsis xav txog nws qhov kev cuam tshuam ntawm qhov kub ntawm lub hwj chim module.

Nyob rau hauv daim ntawv thov tshwj xeeb, qhov kub ntawm lub converter tswj module yog siab tshaj qhov kub ntawm ib puag ncig ntuj, yog li cov hluav taws xob hluav taws xob hloov hluav taws xob yog qhov tsim nyog rau cov cua sov dissipation.

Txawm li cas los xij, qee zaum, qhov kub ntawm qee qhov cua sov nyob ib puag ncig ntawm cov khoom siv hluav taws xob (electronic device board, high-power resistance, etc.) yog siab dua li ntawm lub hwj chim module, thiab cov hluav taws kub ntawm cov khoom no yuav ua rau qhov kub thiab txias. ntawm kev tswj module nce.

Nyob rau hauv lub tshav kub dissipation tsim tswv yim, cov txheeb ze txoj hauj lwm ntawm lub peripheral Cheebtsam ntawm lub converter tswj module yuav tsum tau teem scientifically raws li lub zog ntawm tshav kub tawg.

Thaum cov cua kub nyob ze ntawm lub converter tswj module, txhawm rau ua kom tsis muaj zog cua sov ntawm cov hluav taws xob hluav taws xob, qhov nyias nyias ntawm cov ntaub thaiv hluav taws xob yuav tsum tau muab tso rau ntawm cov tswj module thiab cov cua sov.

2, kis tau tus mob kub dissipation

Hauv ntau daim ntawv thov, cov cua sov tsim los ntawm lub hwj chim module substrate raug xa mus rau qhov chaw nyob deb ntawm tshav kub dissipation los ntawm cov khoom siv hluav taws xob.

Nyob rau hauv txoj kev no, qhov kub ntawm PSU substrate yuav sib npaug rau qhov kub ntawm qhov chaw txias, qhov kub thiab txias ntawm cov khoom siv hluav taws xob hloov hluav taws xob, thiab qhov sib npaug ntawm qhov kub ntawm ob qhov chaw.

Lub thermal tsis kam ntawm cov hluav taws xob hloov hluav taws xob yog proportional rau qhov ntev L ntawm ob, thiab inversely proportional rau lub cross-sectional cheeb tsam thiab tshav kub hloov ntawm ob, siv raw cov ntaub ntawv tsim nyog thiab cross-sectional cheeb tsam, tab sis kuj muaj peev xwm ua tau zoo txo ​​tus nqi. thermal tsis kam ntawm tshav kub hloov Cheebtsam.

Qhov chaw teeb tsa thiab tus nqi tsim nyog tau txais, lub dab dej kub uas muaj qhov tsis zoo thermal yuav tsum tau siv.

Nws yuav tsum tau muab sau tseg tias thaum PSU substrate kub yog txo me ntsis, lub sij hawm nruab nrab ntawm kev ua tsis tiav (MTBF) yuav nce ntau.

Kev tsim thiab tsim cov khoom siv raw rau cov dab dej kub yog qhov tseem ceeb cuam tshuam rau kev ua haujlwm. Peb yuav tsum xyuam xim rau ntau yam thaum xaiv.

Hauv ntau daim ntawv thov, cov cua sov uas tsim los ntawm lub hwj chim module yuav raug xa mus los ntawm lub substrate mus rau lub radiator lossis cov khoom siv hluav taws xob hloov hluav taws xob.

Txawm li cas los xij, qhov sib txawv ntawm qhov kub thiab txias ntawm qhov chaw ntawm lub zog module substrate thiab cov khoom siv hluav taws xob hloov pauv yuav tsum tau tswj. Lub thermal tsis kam yog txuas nrog nyob rau hauv series nyob rau hauv lub tshav kub dissipation tswj voj. Qhov kub ntawm lub substrate yuav tsum yog qhov sib npaug ntawm qhov kub thiab txias ntawm cov khoom siv hluav taws xob.

Yog tias tsis tau txheeb xyuas, qhov nce hauv qhov kub thiab txias yuav pom tau zoo heev.

Tag nrho thaj chaw saum npoo yuav tsum loj npaum li qhov ua tau, thiab qhov chaw du yuav tsum nyob hauv 5 mil (0.005 ft).

Txhawm rau kom zoo dua tshem tawm cov convex thiab concave nto, koj tuaj yeem sau qhov chaw nrog thermal nplaum los yog cov ntaub ntawv hloov hluav taws xob.

Nrog rau kev ntsuas tsim nyog, qhov chaw thermal kuj tuaj yeem txo qis dua 0.1 degree /W.

Qhov kub thiab txias tuaj yeem txo qis thiab TAmax tuaj yeem nce ntxiv los ntawm kev txo cov cua sov thiab thermal tsis kam (RTH) lossis kev siv hluav taws xob (Ploss). Lub zog siab tshaj plaws ntawm cov khoom siv hluav taws xob hloov pauv muaj feem cuam tshuam nrog kev thov kub. Cov kev cuam tshuam tseem ceeb suav nrog poob lub zog hluav taws xob Ploss, thermal kuj RTH, thiab qhov siab tshaj plaws hloov hluav taws xob plhaub kub TC.

Cov khoom siv hluav taws xob hloov nrog qhov ua tau zoo tshaj plaws thiab cov cua sov dissipation muaj qhov kub thiab txias.

Nyob rau hauv nominal tso zis fais fab tso zis, lawv qhov kub thiab txias yuav siv tau tshaj.

Lub zog hloov hluav taws xob nrog kev ua haujlwm qis lossis tsis muaj cua sov dissipation muaj qhov kub siab dua.

Lawv yuav tsum yog cua txias los yog derated rau daim ntawv thov.

3, convection tshav kub dissipation

Convective heat dissipation yog txoj hauv kev zoo tshaj plaws ntawm cov cua sov dissipation hauv AEP fais fab converters. Convection feem ntau muab faib ua natural convection thiab yuam convection.

Thaum tshav kub kub hloov los ntawm qhov kub thaiv qhov chaw mus rau qhov kub thiab txias ntawm ib puag ncig zoo li qub, hu ua natural convection;

Kev hloov ntawm tshav kub los ntawm qhov chaw ntawm qhov kub thaiv mus rau cov kua roj yog hu ua yuam convection.

Qhov zoo ntawm ntuj convection yog yooj yim heev rau kev ua tiav, tsis muaj hluav taws xob kiv cua, tus nqi qis, thiab kev ntseeg siab ntawm cov cua sov dissipation.

Txawm li cas los xij, qhov ntim ntawm lub dab dej kub yuav tsum tau ua kom tiav tib lub substrate kub yog loj heev piv rau yuam convection.

Sinda Thermal yog cov kws tshaj lij thiab paub txog cov khoom siv hluav taws xob ua kom sov, peb lub Hoobkas tau tsim muaj ntau tshaj 8 xyoo, peb muab ntau yam ntawm cov dab dej kub rau cov neeg siv khoom thoob ntiaj teb, peb tuaj yeem muab cov qauv thermal zoo thiab cov dab dej kub zoo. Thov hu rau peb dawb yog tias koj muaj kev xav tau thermal.