Dab tsi yog qhov sib txawv ntawm kev siv diode hauv cov chaw nres tsheb fais fab tshiab?

1, Kev siv thev naus laus zis: Kev hloov kho dua tshiab los ntawm ib txwm siv silicon-raws li dav bandgap semiconductors
Cov tsoos silicon-raws li diodes tau ntev ua tus thawj coj ntawm lub khw muag khoom vim lawv cov nqi qis thiab cov cuab yeej paub tab. Txawm li cas los xij, nrog rau kev txhim kho lub zog tshiab tsheb mus rau qhov muaj hluav taws xob siab thiab lub zog siab, qhov kev ua tau zoo ntawm silicon-raws li diodes tau dhau los ua qhov tseem ceeb. Piv txwv li, nyob rau hauv 800V siab-voltage fast charging scenario, qhov siab rov qab poob thiab qis hloov zaus ntawm silicon-raws li diodes ua rau txo qis hauv kev ua haujlwm, thaum muaj teeb meem kev ruaj ntseg hauv siab - qhov kub thiab txias ib puag ncig kuj txwv lawv daim ntawv thov.

Kev nce ntawm cov ntaub ntawv dav dav ntawm cov khoom siv semiconductor xws li silicon carbide (SiC) thiab gallium nitride (GaN) tau muab cov kev taw qhia tshiab rau kev kho dua tshiab diode technology. Siv SiC Schottky diodes ua piv txwv, lawv muaj qhov zoo hauv qab no:

Tsawg ntawm kev ua haujlwm tsis zoo: Lub zog tseem ceeb ntawm cov khoom siv SiC yog 10 npaug ntawm silicon, uas tuaj yeem ua tiav cov txheej txheej nyias nyias, yog li txo qhov kev tiv thaiv thiab lub zog poob.
Cov yam ntxwv hloov pauv ntau zaus: Lub sijhawm rov qab rov qab (t_rr) ntawm SiC diodes nyob ze rau xoom, ua rau muaj kev hloov pauv ntau zaus thiab hloov mus rau qhov yuav tsum tau ua ntawm high - zaus them modules.
Kev kub siab ua haujlwm: SiC cov cuab yeej tuaj yeem ua haujlwm ruaj khov hauv ib puag ncig siab dua 200 degree, txo qhov nyuaj ntawm cov cua sov dissipation tsim thiab txhim kho kev ntseeg tau.
Raws li cov tuam txhab tshawb fawb kev lag luam 'kev kwv yees, lub ntiaj teb SiC diode kev lag luam loj yuav ntau dua 3 billion US las los ntawm 2026, nrog rau kev loj hlob txhua xyoo ntawm 15%, ntawm qhov chaw them nqi yuav suav ntau dua 30%. Cov lag luam hauv tsev xws li Silanwei thiab Yangjie Technology tau ua tiav ntau lawm ntawm SiC Schottky diodes thiab maj mam qhia tus nqi siab - ntxiv cov xwm txheej xws li them pawg thiab OBC (ntawm - pawg thawj coj saib).

2, Material Innovation: Kev sib koom ua haujlwm zoo ntawm kev ntim tshuab thiab kev tsim hluav taws xob kub
Kev txhim kho ntawm diode kev ua tau zoo tsis yog tsuas yog tso siab rau cov khoom siv tshiab, tab sis kuj yuav tsum muaj kev sib koom tes ua kom zoo dua qub ntawm cov tshuab ntim khoom thiab cov qauv tsim hluav taws xob. Nyob rau hauv daim ntawv thov ntawm cov chaw them nqi, diodes yuav tsum tiv taus hnyav xws li tam sim no, high voltage, thiab siab - zaus hloov, thiab cov ntawv ntim ib txwm muaj (xws li DO-41, TO-220) tsis tuaj yeem ua tau raws li qhov yuav tsum tau ua. Tam sim no, kev lag luam tau nrawm nws cov evolution mus rau cov lus qhia hauv qab no:

Kev ntim khoom ntim: DFN (ob npaug-ib sab tiaj tiaj tsis muaj pins), SODFL (me me patch diode) thiab lwm cov ntaub ntawv ntim tau dhau los ua qhov kev xaiv rau siab - ntom ntom PCB layouts vim lawv qhov me me thiab cov kab mob tsis zoo. Piv txwv li, DFN ntim diodes tuaj yeem txo cov cuab yeej loj rau 1/5 ntawm cov khoom siv ib txwm siv thaum txhim kho cov cua sov kom zoo.
Kev ntim cov cua kub siab: Rau siab - lub zog them modules, cov tuam txhab txhim kho cov thermal conductivity ntawm diodes los ntawm kev siv cov ntaub ntawv xws li tooj liab substrates thiab ceramic ntim. Piv txwv li, ceramic encapsulated SiC diode tsim los ntawm ib lub tuam txhab muaj peev xwm txo tau qhov kub thiab txias los ntawm 40℃thiab txhim kho qhov system efficiency los ntawm 2% piv rau cov tsoos silicon-raws li cov khoom siv hauv 350kW ultra ceev them scenario.
Integrated tsim: integrate ntau diode units rau hauv ib lub module, los yog ntim lawv ua ke nrog MOSFET thiab tsav Circuit Court los tsim ib lub zog ntaus ntawv complex (xws li IPM module), uas yuav ua tau yooj yim Circuit Court tsim, txo parasitic inductance, thiab txhim kho kev cia siab rau.
3, Daim ntawv thov scenario expansion: los ntawm kev them nyiaj module mus rau tag nrho cov saw tiv thaiv
Nrog rau kev kho dua tshiab ntawm chaw nres tsheb thev naus laus zis, daim ntawv thov scenarios ntawm diodes tau txuas ntxiv los ntawm cov qauv kev them nyiaj ib txwm mus rau tag nrho cov saw hlau, suav nrog ntau yam xws li kev tswj fais fab, hluav taws xob sib xyaw (EMC), thiab kev tiv thaiv kev nyab xeeb.

Kev tswj fais fab: Hauv PFC (Power Factor Correction) circuits, ceev rov qab diodes ua ke nrog SiC MOSFETs tuaj yeem ua tiav siab -kev ua tau zoo thiab tsis tshua muaj zog sib haum xeeb hloov pauv, ua tau raws li cov cai ntawm IEC 61000-3-2 tus qauv.
Electromagnetic compatibility: TVS (tam sim no voltage suppression) diodes, nrog rau lawv nanosecond teb ceev, muaj peev xwm ua tau zoo suppress surge voltages generated thaum them chaw nres tsheb txuas nrog lub tsheb, tiv thaiv downstream Circuit Court los ntawm kev puas tsuaj. Piv txwv li, 5kW TVS diode tsim los ntawm qee lub tuam txhab muaj qhov tseeb ntawm qhov tseeb ntawm ± 5% thiab muaj peev xwm nqus tau ntau dua ntawm 10kA.
Kev tiv thaiv kev nyab xeeb: Ntawm lub tshuab hluav taws xob sib txuas, lub diode array tuaj yeem tsim los tiv thaiv kev thim rov qab thiab overvoltage / overcurrent tiv thaiv circuits los tiv thaiv cov khoom puas los ntawm kev ua haujlwm tsis raug. Piv txwv li, qee lub tsheb qauv lub tshuab them nyiaj siv ob-directional TVS diodes txhawm rau txhawm rau thim rov qab voltage nyob rau hauv qhov chaw nyab xeeb, tsis txhob muaj kev pheej hmoo ntawm overcharging lub roj teeb pob.