Vim muaj ntau yam kev sib tw los ntawm lub zog tshiab hluav taws xob tsheb niaj hnub no, kev qhia txog cov tswv yim tshiab thiab cov thev naus laus zis tshiab hauv kev tsim kho thiab tsim cov tshuab hluav taws xob hluav taws xob tshiab tau tshwm sim raws li lub sijhawm xav tau. Tshwj xeeb tshaj yog nrog kev nce qib ntawm cov cuab yeej tsim thev naus laus zis thiab cov txheej txheem tsim khoom, cov khoom siv dav-bandgap semiconductor yuav maj mam hloov cov khoom siv semiconductor, uas yuav tau siv dav hauv cov tsheb tshiab lub zog hluav taws xob hluav taws xob thiab dhau los ua cov qauv tshiab. Lub sijhawm no, tsuas yog ob lub ntsiab lus kub hauv qab no yuav tau tham thiab piav qhia.
* Kev lag luam hluav taws xob hluav taws xob rau hluav taws xob tsheb (EV), hybrid hluav taws xob tsheb thiab roj av tsheb txuas ntxiv mus rau niaj hnub no. Piv txwv li, qhov yuav tsum tau muaj qhov hluav taws xob ntawm ib lub tsheb hluav taws xob hybrid (HEV) lub zog hluav taws xob ntau ntawm 12V txog 800V, thiab tam sim no tuaj yeem ncav cuag ntau pua amperes. Yog li ntawd, silicon (Si) thiab dav-bandgap semiconductor pab kiag li lawm, xws li gallium nitride (GaN) thiab silicon carbide (SiC) li, tau txais kev txaus siab heev.
Qhov dav band gap semiconductor feem ntau yog hais txog cov khoom siv semiconductor uas nws qhov sib txawv ntawm lub zog (qhov sib txawv ntawm lub zog ntawm qhov qis tshaj ntawm cov kab hluav taws xob conduction thiab qhov siab tshaj plaws ntawm qhov valence band) yog ntau dua 2.2 eV. Cov ntaub ntawv dav dav ntawm cov khoom siv hluav taws xob sawv cev los ntawm GaN thiab SiC muaj cov yam ntxwv ntawm lub zog hluav taws xob tawg siab, kev txiav tawm ntau zaus, thermal conductivity siab, kub sib txuas, zoo thermal stability, thiab muaj zog hluav taws xob tiv thaiv. Piv nrog cov txheej txheem silicon (Si) thiab gallium arsenide (GaAs), dav band kis SiC los yog GaN pab kiag li lawm coj efficiency siab dua, hloov zaus, kev khiav hauj lwm kub thiab kev khiav hauj lwm voltage, li no daws teeb meem hloov hluav taws xob. Qhov no yog vim li cas nws yog ib qho inevitable tias wide-bandgap semiconductor li yuav maj mam hloov ib txwm semiconductor li.
Tam sim no, cov tsos ntawm cov hluav taws xob tsheb feem ntau yog tag nrho hybrid electric tsheb (FHEV), plug-in hybrid electric tsheb (PHEV) thiab me me hybrid electric tsheb (MHEV).
Thoob plaws hauv kev sib piv, cov tsheb zoo tib yam muaj 600 MOSFETs, high-end tsheb muaj 100 MOSFETs, thiab 48V lub teeb-hybrid tsheb muaj 400 MOSFETs. Cov khoom siv silicon MOSFET daws qhov teeb meem ntawm qhov hluav taws xob siab thiab tus nqi. Tom qab daws qhov teeb meem ntawm overvoltage imbalance, low-voltage power semiconductor li hauv series configuration tsim ib tug zoo zog hloov dua siab tshiab system daws teeb meem, thiab kuj daws cov nqi thiab efficiency teeb meem. Tshwj xeeb, 48V roj teeb system tuaj yeem tiv taus cov khoom siv hluav taws xob ntau dhau, thaum ua haujlwm nrog kev cuam tshuam hluav taws xob tsawg (EMI), lub voj voog qis thiab ua haujlwm siab.
* Los ntawm kev xav txog kev txuag hluav taws xob thiab kev siv hluav taws xob, kev tswj xyuas thermal ntawm lub zog tshiab hluav taws xob tsheb yog lwm lub ntsiab lus kub. Qhov no yog vim hais tias lub roj teeb lub zog ceev yog tsis raws li high school raws li hais tias ntawm roj av, thiab muaj yuav tsum tau rau lub chaw ua haujlwm kub, thiab lub system xav tau kev pab yuav tsum tau qhov zoo raws li ntau li ntau tau. Cov khoom siv hluav taws xob ntsig txog lub zog tshiab tuaj yeem muab faib ua peb ntu, uas yog lub cev muaj zog thiab lub zog hluav taws xob, lub zog roj teeb, thiab lub cockpit. Cov khoom no muaj ob qho tib si cua sov thiab cua txias. Yog tias koj suav tias 24 kilowatt-teev hluav taws xob xav tau rau txhua 100 km, kwv yees li 20% ntawm cov cua sov yog siv rau cov cua kub dissipation. Raws li kev kwv yees ntawm kev khiav 16,000 mais ib xyoos, ze li ntawm 7680 kilowatt-teev hluav taws xob yuav raug siv rau kev siv cua sov hauv 10 xyoo, uas txhais tau tias yuav raug pov tseg ze li ntawm 15,000 txog 20,000 yuan. Yog li ntawd, qhov pib taw tes yuav tsum yog nrhiav tus nqi sib npaug hauv kev tswj hwm thermal ntawm theem ntawm tag nrho cov kab ke, xav txog cov txheej txheem tsim qauv thiab cov ntsiab lus ntawm cov tswv yim yav tom ntej.
Raws li tsab xov xwm no yuav siv lub tsheb me me hybrid hluav taws xob (MHEV) ua piv txwv, nws 48V MHEV system daim ntawv thov cov yam ntxwv, suav nrog yuav ua li cas siv tus qauv silicon puck converter MOSFET Circuit Court hauv 48V MHEV, suav nrog automotive fais fab hluav taws xob yuav tsum tau qis EMI, Parallel MOSFET, auxiliary 48V system thiab 48V roj teeb, 48V pem hauv ntej-kawg phaw converter thiab lwm yam teeb meem ntawm daim ntawv thov, thiab lub zog tshiab hluav taws xob tsheb thermal tswj hluav taws xob tsav hluav taws xob thiab lub zog hluav taws xob tsim qauv xaiv ob qhov teeb meem loj rau kev sib tham thiab kev tshuaj xyuas.
