Kev Tshawb Fawb Txog Kev Ua Haujlwm Siab -Voltage DC Contactors: Siab -Voltage Platforms hauv Cov Tsheb Hluav Taws Xob Tshiab Tsav Tsheb Txhim Kho hauv Ceramic Sealing Technology

 

Nrog rau txoj kev loj hlob sai ntawm cov tsheb tshiab lub zog (NEVs), roj teeb lub zog cia, thiab siab - lub zog them hluav taws xob, cov tshuab hluav taws xob tau hloov mus rau qhov hluav taws xob ntau dua, muaj zog dua, thiab muaj kev ntseeg siab dua. Raws li kev hloov pauv tseem ceeb hauv lub siab -voltage hluav taws xob tshuab ntawm NEVs, siab -voltage DC contactors pab txhawb kev nyab xeeb kev sib txuas thiab kev sib txuas ntawm lub roj teeb thiab lub nra, nrog rau kev tiv thaiv kev ua txhaum; lawv yog cov khoom tseem ceeb rau kev ruaj ntseg hluav taws xob tag nrho ntawm lub tsheb.

 

Tsis zoo li ib txwm muaj tsawg-voltage relays, siab-voltage DC contactors yuav tsum tau hloov cov circuits ntawm qhov hluav taws xob ntau ntau pua volts lossis siab dua thaum tiv taus qhov tseem ceeb tam sim no surges. Yog li ntawd, lawv cov qauv tsim tsis tsuas yog cov cuab yeej siv tshuab thiab kev siv hluav taws xob hluav taws xob nkaus xwb tab sis kuj tseem muaj cov ntaub ntawv rwb thaiv tsev, arc-txhim kho thev naus laus zis, thiab sealing kev ntseeg tau.

 

Hauv NEV powertrains, siab -voltage DC contactors feem ntau yog ntsia rau hauv cov roj teeb traction, inverter, lub cev muaj zog tswj qhov system, thiab cov khoom siv hluav taws xob. Thaum lub tsheb pib, lub contactor kaw, cia lub roj teeb traction muab lub zog rau lub zog tsav; conversely, thaum lub tsheb nres los yog ib qho anomaly raug kuaj pom, lub contactor qhib sai heev kom cais tawm qhov siab -voltage circuit thiab tiv thaiv qhov nce ntawm hluav taws xob ua txhaum.

 

Raws li qhov hluav taws xob platforms hauv NEVs nce qib - hloov pauv los ntawm 400V systems mus rau 800V lossis ntau dua architectures - siab -voltage DC contactors ntsib qhov yuav tsum tau nruj ntxiv txog qhov muaj peev xwm tiv taus, teb ceev, thiab cov qauv kev nyab xeeb.

 

 

 

High-voltage DC contactors feem ntau muaj xws li kev sib cuag, lub tshuab hluav taws xob hluav taws xob, lub vaj tse insulating, arc - cov qauv tua hluav taws, thiab cov khoom sib khi. Cov kev sib cuag tswj xyuas kev sib kis tam sim no thiab cuam tshuam, lub tshuab ua kom muaj zog tswj kev sib cuag, thiab cov rwb thaiv tsev thiab arc - tua hluav taws txiav txim siab cov khoom lag luam kev ntseeg siab nyob rau hauv siab -voltage ib puag ncig.

 

Raws li lub arc-tuag ib puag ncig thiab cov ntaub ntawv vaj tsev, siab-voltage DC contactors feem ntau tau muab faib ua hom xws li ceramic nqus tsev vacuum, ceramic hermetically kaw, thiab epoxy resin encapsulated.

 

Ntawm cov no, lub tshuab nqus tsev vacuum ceramic yog dav siv hauv NEVs, siab -voltage zog cia tshuab, thiab cov khoom siv hluav taws xob vim nws lub zog dielectric siab, kev ua tau zoo sealing zoo, thiab ruaj khov arc -extinguishing peev xwm.

 

Cov ntaub ntawv ceramic muaj lub zog txhua yam, tsis tshua muaj hluav taws xob poob, thiab ua haujlwm kub zoo dua, ua kom muaj kev ruaj ntseg zoo thaum lub sij hawm tus contactor lub sijhawm ua haujlwm ntev -. Hauv kev siv hluav taws xob siab -, cov vaj tsev ceramics txo qhov cuam tshuam ntawm cov dej noo, cov kab mob, thiab ib puag ncig ntawm cov khoom siv sab hauv.

 

Piv txwv li, siab -kev ntseeg siab ceramic EV relay rooj plaub tiv thaiv kev sib cuag nrog cov kab ke los ntawm cov txheej txheem rwb thaiv tsev ceramic, ua kom tus contactor ua tau raws li qhov xav tau ntawm kev ua haujlwm ntev - lub sijhawm ua haujlwm nyob rau hauv cov xwm txheej nyuaj ntawm lub zog tshiab.

 

 

 

Qhov chaw ua haujlwm sab hauv ntawm siab -voltage DC contactors yog qhov nyuaj heev; khaus arcing tshwm sim, tshwj xeeb tshaj yog thaum lub sij hawm siab - cuam tshuam tam sim no.

 

Kev tswj tsis tau lub arc sai sai thiab ua tau zoo tuaj yeem ua rau muaj kev sib cuag nrog kev yaig, kev rwb thaiv tsev tsis zoo, lossis txawm tias tag nrho cov khoom siv tsis ua haujlwm.

 

Thaum ib txwm huab cua-raws li arc-txoj kev tua hluav taws raug txwv nyob rau hauv siab -voltage thiab siab- tam sim no, lub tshuab nqus tsev arc-extinguishing thev naus laus zis siv lub tshuab nqus tsev ib puag ncig kom txo qis kev cuam tshuam ntawm cov pa tawm. Qhov no ua rau yooj yim dua arc extinction, yog li pab txhawb kev tawg thiab ncua kev pab cuam lub neej.

 

Raws li cov khoom tseem ceeb rau lub tshuab nqus tsev, cov ceramic yuav tsum ua tau raws li ntau qhov kev xav tau ib txhij:

High dielectric zog;
Zoo heev hermetic sealing;
Kev tiv thaiv thermal shock;
Ntev -lub sij hawm stability;
Txhim khu kev sib txuas nrog cov khoom siv hlau.

 

Yog li ntawd, ceramic metallization tau dhau los ua cov txheej txheem tseem ceeb hauv kev tsim cov siab -voltage contactors.

 

Cov txheej txheem ceramic metallization tsim cov txheej txheem hlau txhim khu kev qha ntawm cov khoom siv ceramic, ua rau siab - muaj zog kev sib txuas ntawm cov khoom siv ceramic thiab cov hlau xws li tooj liab lossis molybdenum, ua kom ruaj khov ceramic - rau - hlau daim ntawv cog lus.

 

Txoj kev sib txuas no tsis yog tsuas yog ua kom lub zog siv tshuab xwb tab sis kuj ua tau raws li qhov yuav tsum tau ua rau lub sijhawm ntev -, txhim khu kev lag luam nyob rau hauv siab -voltage, hermetically kaw ib puag ncig.

 

 

Ceramic metallization yog cov cuab yeej tseem ceeb hauv kev tsim cov khoom siv hluav taws xob siab heev; Nws koom nrog kev tsim cov txheej txheem metallized rau saum npoo ntawm alumina ceramics thiab tom qab ntawd koom nrog cov ceramic rau hlau siv cov txheej txheem xws li brazing.

 

Hauv kev ua haujlwm siab -voltage DC contactors, qhov thev naus laus zis no feem ntau yog siv los tsim lub tshuab nqus tsev arc- tua chamber vaj tse, insulating kev txhawb nqa cov qauv, thiab siab -voltage hermetic sib dhos.

 

Vim nws lub zog txhua yam thiab cov khoom siv hluav taws xob zoo heev, alumina (Al₂O₃) yog tam sim no feem ntau siv insulating ceramic khoom.

 

Piv txwv li, ua haujlwm ibalumina ceramic vaj tseqauv rau siab-voltage DC contactors zoo txhim khu kev ruaj ntseg rwb thaiv tsev nyob rau hauv siab-voltage ib puag ncig thaum txo qhov kev ua tau zoo degradation thaum lub sijhawm ua haujlwm ntev-. Piv nrog rau cov khoom siv yas los yog cov khoom siv epoxy, alumina ceramics tuaj yeem tiv taus qhov kub thiab txias dua thiab muaj zog hluav taws xob, muab qhov zoo sib xws hauv siab -voltage platform daim ntawv thov rau lub zog tshiab.