OBC Charger cooling solution tsim
Vim tias kev sib xyaw ua ke thiab kev ua haujlwm ntau lub tsheb charger yuav tsim cov khoom siv hluav taws xob ntxiv vim qhov hloov pauv ntawm lub zog hluav taws xob, txawm li cas los xij, AC / DC load (them them) thiab DC load (tsav tsheb hom) tsis tshwm sim tib lub sijhawm. Lub tsheb charger yog ib qho tseem ceeb ntawm cov tsheb fais fab tshiab, thiab kev tswj xyuas thermal ntawm lub tsheb charger tau dhau los ua qhov hnyav dua.
Qhov no ua rau cov thermal tsim engineers feem ntau cia ntau thermal loads nyob rau hauv ib tug multi-functional tsheb charger qhia tib heatsink, lub plhaub ntawm lub tsheb charger hardware pwm, kom txo tau tag nrho cov loj, hnyav thiab nqi. Tag nrho cov khoom siv hluav taws xob ntawm lub tsheb charger yuav tsum tau ntim rau hauv lub plhaub kaw no kom tsis txhob muaj kuab paug ib puag ncig. Qhov no yuav tsum tau hais tias cov khoom siv hluav taws xob, chips, MOSFETs, thiab lwm yam nrog cov hluav taws kub loj loj yuav tsum tau hu rau sab hauv phab ntsa ntawm lub plhaub ntawm cov pwm hlau kom paub zoo txog kev hloov hluav taws xob thiab cua sov.
Tam sim no, cov khoom siv thermal tswj kev daws teeb meem feem ntau yog siv cov ntawv rwb thaiv tsev thermal lossis thermal rwb thaiv tsev ntawv + thermal silicone roj. Cov ntawv thermal rwb thaiv tsev muaj cov haujlwm ntawm rwb thaiv tsev, qhov hluav taws xob tiv thaiv thiab tsim kua muag. Lub zog tawg tuaj yeem ncav cuag ntau dua 6kV, ua tau raws li qhov xav tau ntawm lub tsheb. Qhov tsis tshua muaj thermal kuj tuaj yeem hloov cov cua sov uas tsim los ntawm MOS mus rau lub plhaub radiator ntawm lub tsheb charger. Phase hloov cov ntaub ntawv insulating tuaj yeem siv ncaj qha. Cov theem hloov txheej yog khoom ntawm qhov kub thiab txias. Thaum qhov kub ua hauj lwm mus txog nws theem hloov kub, nws yuav hloov los ntawm cov khoom hauv lub xeev mus rau lub xeev kua.
Thaum nyob rau hauv lub siab sab nraud, cov theem hloov cov khoom ntawm lub xeev cov kua muaj peev xwm infiltrate lub interface (kub qhov chaw thiab tshav kub dab dej nto) kom txo tau cov thermal tiv thaiv ntawm lub interface, thiaj li mus cuag qhov zoo tshaj plaws tshav kub hloov.
