Lub tsheb ib puag ncig yog ib qho chaw hnyav tshaj plaws rau cov khoom siv hluav taws xob. Hnub noEV chargerstsim kev loj hlob nrog cov khoom siv hluav taws xob rhiab heev, suav nrog kev tswj hluav taws xob, infotainment, sensing, roj teeb pob, tswj roj teeb,hluav taws xob tsheb point, thiab on-board chargers. Ntxiv rau qhov kub, qhov hluav taws xob hloov pauv, thiab hluav taws xob cuam tshuam (EMI) nyob rau hauv ib puag ncig hauv tsheb, cov khoom siv hluav taws xob yuav tsum cuam tshuam nrog AC daim phiaj hluav taws xob, xav tau kev tiv thaiv los ntawm AC kab cuam tshuam rau kev lag luam txhim khu kev qha.
Niaj hnub no cov khoom lag luam muaj ntau yam khoom siv los tiv thaiv hluav taws xob circuits. Vim muaj kev sib txuas rau daim phiaj, on-board charger tiv thaiv los ntawm voltage surges siv cov khoom tshwj xeeb yog qhov tseem ceeb.
Ib qho kev daws teeb meem tshwj xeeb ua ke nrog SIDACtor thiab Varistor (SMD lossis THT), ncav cuag qhov hluav taws xob qis qis hauv qab lub siab dhia siab. SIDACtor + MOV kev sib xyaw ua ke ua rau cov kws kho tsheb tsim kho kom zoo rau kev xaiv thiab yog li ntawd, tus nqi ntawm lub zog semiconductors hauv kev tsim. Cov khoom no xav tau los hloov AC voltage rau hauv DC voltage kom them lub tshebon-board roj teeb them.
Daim duab 1. On-Board Charger Block Diagram
Lub On-BoardCharger(OBC) muaj kev pheej hmoo thaum lub sijhawmEV them nyiajvim raug rau overvoltage txheej xwm uas yuav tshwm sim ntawm daim phiaj fais fab. Tus tsim yuav tsum tiv thaiv lub hwj chim semiconductors los ntawm overvoltage transients vim hais tias voltages tshaj lawv qhov siab tshaj plaws txwv yuav ua rau lawv puas. Txhawm rau txuas ntxiv EV qhov kev ntseeg tau thiab lub neej ntev, cov kws ua haujlwm yuav tsum hais txog qhov kev xav tau tam sim no nce ntxiv thiab qis dua qhov siab tshaj plaws clamping voltage hauv lawv cov qauv tsim.
Piv txwv qhov chaw ntawm kev hloov hluav taws xob hloov pauv muaj xws li hauv qab no:
Hloov ntawm cov loads capacitive
Hloov ntawm cov tshuab hluav taws xob tsawg thiab resonant circuits
Lub voj voog luv uas tshwm sim los ntawm kev tsim kho, kev sib tsoo tsheb, lossis cua daj cua dub
Triggered fuses thiab tiv thaiv overvoltage.
Daim duab 2. Pom zoo Circuit Court rau txawv thiab hom hom Transient Voltage Circuit Court tiv thaiv siv MOVs Thiab ib GDT.
A 20mm MOV yog qhov zoo dua rau kev ntseeg tau zoo dua thiab kev tiv thaiv. Lub 20mm MOV tuav 45 pulses ntawm 6kV / 3kA surge tam sim no, uas muaj zog ntau dua li 14mm MOV. Lub 14 hli disc tuaj yeem tsuas yog nyob ib puag ncig 14 surges dhau nws lub neej.
Daim duab 3. Clamping Performance Of The Little lnfuse V14P385AUTO MOV Under 2kV And 4kV Surges. Clamping Voltage tshaj 1000V.
Piv txwv kev txiav txim siab
Theem 1 Charger-120VAC, ib-theem Circuit Court: Qhov kev cia siab ambient kub yog 100 ° C.
Yog xav paub ntxiv txog kev siv SIDAct lossis Tiv Thaiv Thyristors hauvhluav taws xob tsheb, rub tawm Yuav Ua Li Cas Xaiv Qhov Zoo Tshaj Plaws Kev Tiv Thaiv Kev Tiv Thaiv rau EV On-Board Chargers daim ntawv thov daim ntawv ceeb toom, kev lees paub ntawm Little fuse, Inc.
Post lub sij hawm: Jan-18-2024