Lub luag hauj lwm ntawm zaj duab xis Capacitor Busbars nyob rau hauv Tshiab Zog Tsheb Fais Fab Systems

Nrog rau kev nthuav dav thoob ntiaj teb sai ntawm kev lag luam tsheb tshiab, hluav taws xob tsheb (EVs) thiab hybrid hluav taws xob tsheb (HEVs) tau tso cov kev xav tau ntxiv ntawm kev ua tau zoo, lub zog ceev, thiab kev ntseeg siab ntawm lawv cov tshuab fais fab. Raws li cov ntsiab lus tseem ceeb txuas lub roj teeb traction mus rau lub tsav tsav, lub inverter yog lub luag haujlwm rau kev hloov hluav taws xob thiab kev tswj xyuas meej, yuav tsum tau ua haujlwm ruaj khov nyob rau hauv cov xwm txheej hnyav uas muaj qhov siab voltages, siab tam sim no, thiab siab - zaus hloov. Nyob rau hauv cov ntsiab lus no, DC-Txuas cov zaj duab xis capacitors thiab lawv cov kev sib koom ua ke busbar ua lub luag haujlwm tseem ceeb, ua haujlwm tseem ceeb uas ua kom muaj hluav taws xob ua tau zoo thiab electromagnetic compatibility siab -voltage electric drive systems.

 

Zaj duab xis capacitor busbar yog deb tshaj qhov yooj yim conductive connector; nws yog qhov siab -cov khoom siv hluav taws xob muaj tseeb uas ua ke nrog kev sib kis tam sim no, cua sov dissipation, thiab kev txhawb nqa cov qauv. Nws cuam tshuam ncaj qha rau qhov kev sib kis tau zoo, kev tswj xyuas thermal, thiab kev ua haujlwm ntev -lub sijhawm ua haujlwm. Tshwj xeeb nrog kev siv dav dav ntawm thib peb- tiam semiconductors, cov kab hluav taws xob ib txwm siv zog ua kom tau raws li qhov yuav tsum tau ua rau siab - ua haujlwm zaus thiab qis inductance. Yog li ntawd, composite capacitor busbars- muab cov cab cab inductance tsawg, muaj kev ntseeg siab ntawm rwb thaiv tsev, thiab kev sib koom ua ke siab- tau dhau los ua ib qho kev txhim kho tseem ceeb hauv kev lag luam hluav taws xob tshiab hluav taws xob, vim lawv ua tau zoo tiv thaiv siab - zaus voltage spikes thaum lub sij hawm hloov thiab txo qhov system poob.

 

 

Lub zog tsheb ciav hlau ntawm lub tsheb tshiab lub zog muaj xws li lub hwj chim roj teeb, lub cev muaj zog tswj, inverter, thiab siab -voltage interconnects. Raws li cov ntsiab lus tseem ceeb rau kev hloov hluav taws xob hluav taws xob, lub inverter yuav tsum hloov tam sim no ncaj qha (DC) rau hauv kev hloov tam sim no (AC) kom tsav lub cev muaj zog; nyob rau hauv cov txheej txheem no, DC-Txuas txuas capacitor ua lub luag haujlwm tseem ceeb hauv kev ruaj khov ntawm DC tsheb npav voltage. Raws li kev ua haujlwm nyuaj-xws li kev pib ua haujlwm, nrawm, thiab lub zog rov qab los- qhov hloov pauv tam sim no yog khaus. Yog tias tsis muaj cov khoom siv lim dej zoo, cov khoom siv hluav taws xob muaj qhov cuam tshuam rau kev txo qis thiab ua haujlwm luv luv los ntawm qhov hluav taws xob jitter thiab ripple.

 

DC-Txuas cov zaj duab xis capacitors ua tau zoo du voltage fluctuations, nqus siab - zaus ripple tam sim no, thiab txo qhov voltage surges, yog li no txhim khu kev ruaj ntseg ntawm lub hwj chim modules. Ntawm cov no, biaxially oriented polypropylene (BOPP) zaj duab xis capacitors tau tshwm sim raws li cov kev daws teeb meem rau traction inverters nyob rau hauv lub zog tshiab tsheb, ua tsaug rau lawv cov tsis tshua muaj zog, siab voltage tiv taus, thiab superior siab - zaus teb. Txawm li cas los xij, kev paub txog lub peev xwm ua tau zoo ntawm lub capacitor tsis yog nyob ntawm nws cov qauv sab hauv nkaus xwb tab sis kuj nyob ntawm txoj kev sib txuas hluav taws xob sab nraud.

 

Yog tias cov kab hluav taws xob ib txwm siv los txuas lub capacitor rau lub hwj chim module, qhov ua rau lub cev ntev txoj hauv kev qhia cov kab mob parasitic inductance tseem ceeb. Thaum lub sij hawm siab - hloov ceev ntawm cov cuab yeej hluav taws xob, cov kab mob cab no ua rau muaj kev hloov loj heev - tawm qhov hluav taws xob tawm; cov no tsis tsuas yog ua rau kom cov thermal poob, tab sis kuj yuav ua rau dielectric puas nyob rau hauv rhiab semiconductor chips. Yog li ntawd, kev kov yeej cov kev txwv electromagnetic inherent hauv cov kab ib txwm muaj tau dhau los ua qhov tseem ceeb rau kev txhim kho tag nrho cov txiaj ntsig thiab kev nyab xeeb ntawm siab -voltage electric tsav systems.

 

Tshwj xeeb busbars rau lub zog tshiab lub tsheb capacitors tau tshwm sim los ua ib qho kev daws teeb meem tseem ceeb rau kev ua kom zoo dua DC-Txuas kev ua tau zoo. Los ntawm kev ua haujlwm nruj sib tshooj, qis -inductance laminated topology, lub busbar siv qhov kev sib nrig sib tshem tawm ntawm cov hlau nplaum uas tsim los ntawm kev tawm tsam tam sim no los txo cov kab mob parasitic inductance mus rau nanohenry (nH) ntau yam. Qhov no tseem ceeb suppresses siab - zaus hloov voltage spikes thiab txo qhov system poob, thaum tib lub sij hawm txhim kho kev sib koom ua ke thiab ua kom muaj kev ruaj ntseg ntawm lub siab -voltage electric tsav system.

 

 

EV zaj duab xis capacitor busbar yog ib qho kev sib txuas sib txuas ua ke tsim tshwj xeeb tsim rau lub siab -voltage hluav taws xob tsav tshuab ntawm lub zog tshiab. Nws feem ntau ua haujlwm rau kev sib txuas ntawm DC-Txuas txuas zaj duab xis capacitors, IGBT fais fab modules, SiC MOSFET fais fab modules, thiab lub cev muaj zog tswj inverters.

 

Tsis zoo li tus qauv tooj liab busbars, EV capacitor busbars feem ntau muaj cov qauv laminated tsim los ntawm ntau cov txheej txheem ua haujlwm. Thawj yog cov txheej txheem conductive. Cov txheej no feem ntau siv cov khoom siv tooj liab siab -cov khoom siv tooj liab- xws li T2 tooj liab, C1100 ntshiab tooj liab, los yog OFC (oxygen- tooj liab dawb)- uas muaj cov hluav taws xob zoo thiab thermal conductivity kom tau raws li qhov siab -tam sim no kev xav tau ntawm lub zog tshiab. Qhov thib ob txheej yog txheej rwb thaiv tsev. Cov ntaub ntawv muaj xws li PET polyester zaj duab xis, PI polyimide zaj duab xis, thiab PEN rwb thaiv tsev cov ntaub ntawv. Cov txheej no ua haujlwm los tiv thaiv luv luv ntawm cov ncej zoo thiab tsis zoo, txhim kho qhov muaj peev xwm tiv taus, thiab txhim kho ib puag ncig kev ntseeg tau. Cov txheej thib peb muaj cov txheej txheem tiv thaiv thiab kev sib txuas.

Raws li cov kev xav tau tshwj xeeb ntawm lub tsheb qhov project, lub tsheb npav tuaj yeem suav nrog kev kho saum npoo (xws li tin, npib tsib xee, lossis nyiaj plating), cov qauv hauv davhlau ya nyob twg, thiab qhov tseeb -stamped kev sib txuas zones. Los ntawm no ntau- txheej txheej tsim, lub laminated busbar ua rau siab - kis tau tus mob tam sim no nyob rau hauv ib qho chaw compact thaum txo cov voj voog ncig, yog li txo cov kab mob parasitic inductance.

 

 

Txo cov kab mob parasitic inductance los txhim kho inverter efficiency. Tshiab zog tsheb (NEV) inverters yog hloov los ntawm ib txwm IGBT technology mus rau SiC fais semiconductor technology. SiC cov cuab yeej muab kev hloov pauv ntau dua, kev hloov pauv qis dua, kev ua haujlwm siab dua, thiab muaj zog ntau dua. Rau yav tom ntej - tiam NEV inverters siv SiC fais fab modules, qis -inductance busbar tsim tau dhau los ua qhov kev xav tau tseem ceeb.

 

Txhim khu kev koom ua ke ntawm NEV powertrain systems. NEVs thov kom siv tau qhov chaw zoo dua. Cov kev sib txuas ib txwm siv feem ntau xav tau ntau lub xov tooj tooj liab, ntau lub davhlau ya nyob twg, thiab cov txheej txheem mounting nyuaj; cov kev zoo li no tsis yog tsuas yog siv qhov chaw xwb tab sis kuj ua rau muaj kev sib txuas tsis raug. Hauv qhov sib piv, busbars rau NEV zaj duab xis capacitors muaj cov qauv tsim qauv uas tuaj yeem hloov kho kom haum rau qhov tshwj xeeb inverter architecture. Rau 800V NEV platforms, siab-voltage systems xav tau kev sib txuas cov kev daws teeb meem uas ntau dua compact, muaj kev nyab xeeb, thiab txhim khu kev qha, ua rau kev sib koom ua ke busbar ua ib qho tseem ceeb hauv NEV electronic systems.

 

Txhim kho kev tswj xyuas thermal hauv siab - ib puag ncig tam sim no. NEV powertrains feem ntau yuav tsum tiv taus qhov hloov pauv tseem ceeb hauv tam sim no. Nyob rau hauv siab - qhov chaw ua haujlwm tam sim no, busbars tsim Joule tshav kub (P=I²R), qhov twg P sawv cev rau lub zog poob, Kuv yog qhov kev khiav hauj lwm tam sim no, thiab R yog qhov tsis kam. Yog li ntawd, qhov kev xaiv ntawm cov khoom siv busbar, ntoo khaub lig- ntu ntu, thiab cov qauv tsim txhua yam cuam tshuam rau lub cev qhov kub thiab txias. High- zoo tooj liab busbars muaj kev ua haujlwm tsawg, thermal conductivity, thiab ruaj khov txhua yam muaj zog. Optimizing tooj liab txheej thickness thiab tshav kub dissipation txoj kev pab txo kev khiav hauj lwm kub nce, yog li pab tau lub sij hawm ntev - kev cia siab ntawm NEV powertrain system.

 

 

Hauv cov tshuab hluav taws xob ntawm lub zog tshiab (NEVs), DC - txuas zaj duab xis capacitors ua lub luag haujlwm tseem ceeb hauv kev ruaj ntseg DC voltage, thaum lub busbars txuas cov capacitors rau lub hwj chim modules txiav txim siab lub zog kis tau tus mob efficiency thiab kev cia siab ntawm lub system. Thaum ntsuam xyuas NEV powertrains, kev saib xyuas feem ntau yog tsom rau lub peev xwm roj teeb, kev ua haujlwm ntawm lub cev muaj zog, kev ua haujlwm ntawm inverter, thiab lub zog semiconductor technology.

Txawm li cas los xij, cov khoom sib txuas sib txuas ua lub luag haujlwm tseem ceeb hauv kev ua haujlwm siab - hluav taws xob tsav tsheb.

Txoj kev luv luv tam sim no txo ​​qis qhov kev poob qis, thaum lub zog hluav taws xob ntau dua yuav txo cov kab mob parasitic. Yog li ntawd, siab -kev ua tau zoo busbars rau DC- txuas zaj duab xis capacitors tau dhau los ua qhov tseem ceeb hauv kev ua kom zoo ntawm NEV fais fab hluav taws xob tshuab.

 

Los ntawm kev txo cov kab mob parasitic inductance, qhov kev sib koom ua ke no txhim kho kev ruaj ntseg tag nrho thaum txhawb siab siab - tam sim no muaj peev xwm kis tau tus mob. Nyob rau tib lub sijhawm, nws ua kom zoo tshaj qhov kev tswj hwm thermal thiab ua kom zoo dua electromagnetic compatibility (EMC) kev ua tau zoo thoob plaws qhov xav tau kev ua haujlwm siab -voltage.

 

 

Zaj duab xis capacitor busbars tau siv dav hauv cov khoom tseem ceeb ntawm lub zog tshiab, xws li lub zog tsav tsheb loj, ntawm -cov khoom siv hluav taws xob (OBCs), DC / DC converters, thiab siab -voltage power distribution units (PDUs). Hauv inverters thiab "tag nrho-hauv-ib qho" hluav taws xob tsav tsheb, lub tsheb npav yog nruj ua ke nrog DC-Txuas cov zaj duab xis capacitor; nws tsis tsuas yog smooths DC voltage thiab absorbs lub zog ripple tam sim no thiab voltage spikes generated los ntawm siab - zaus hloov nyob rau hauv lub hwj chim semiconductors tab sis kuj zoo faib cov siab tam sim no thiab sib npaug ntau capacitor ceg nyob rau hauv dual -motor thiab PDU architectures. Ua tsaug rau lawv cov qauv geometric topology, cov busbars sib xyaw ua tau raws li qhov yuav tsum tau ua rau qis - inductance kis tau tus mob, txhim khu kev qha rwb thaiv tsev, ua kom muaj cua sov kom zoo, thiab electromagnetic compatibility (EMC) shielding -tag nrho nyob rau hauv ib qho me me hneev taw thiab ntawm lub zog loj.

 

Tsav los ntawm kev txais yuav sai sai ntawm 800V siab-voltage platforms thiab silicon carbide (SiC) semiconductors, yav tom ntej zaj duab xis capacitor busbars tau hloov mus rau sub-nanohenry (sub-nH) ultra-low inductance topologies. Los ntawm kev siv qhov sib npaug ntawm qhov sib npaug - phaj topologies, micron - nplai lamination spacing, thiab 3D magnetic teb tshem tawm tsim, cov busbars sib xyaw tuaj yeem txo cov kab mob parasitic inductance, yog li tshem tawm siab - zaus tig- tawm qhov hluav taws xob tawm ntawm qhov chaw. Tib lub sijhawm, busbars tab tom hla lawv lub luag haujlwm ib txwm ua tsuas yog "hluav taws xob txuas" los ua ke nrog cov capacitor cores, kua-cooling baseplates, thiab fais fab modules. Qhov no tsim kev sib xyaw ua ke "electromagnetic{14}}thermal{15}}structural" multi-physics modules uas muab cov kev sib kis tam sim no, kev siv hluav taws xob, thiab kev sib txuas ntawm lub sensor, ua tau raws li qhov xav tau ntawm kev tsim lub teeb yuag thiab kev siv qhov chaw zoo hauv cov tshuab hluav taws xob.

 

Txhawm rau daws cov teeb meem ntawm kev sib sau ua ke ntawm cov cua sov hauv zos thiab siab -voltage alternating electric teb cuam tshuam nrog lub zog siab ceev, yav tom ntejNew zog tsheb (NEV) zaj duab xis capacitor busbarsyuav dav siv cov ntaub ntawv rwb thaiv tsev tshiab uas muaj cov yam ntxwv ntawm siab - kub tsis kam (dhau 150 degree) thiab thermal conductivity siab - xws li hloov kho PI films thiab thermally conductive epoxy resins. Los ntawm kev sib txuas cov ntaub ntawv no nrog lub tshuab nqus tsev kub- nias thiab seamless ntug- txheej txheem sealing, cov tuam txhab tuaj yeem xyuas kom muaj kev tso tawm ib nrab- ua haujlwm dawb (< 10 pC) under long-term high-voltage conditions and extend the component's service life and environmental durability. Furthermore, driven by the need for vehicle lightweighting and cost optimization, the adoption of high-conductivity aluminum busbars and copper-aluminum composite busbars will continue to rise; when combined with selective micron-level salt-spray-resistant coatings and precision ultrasonic or laser welding technologies, these solutions significantly reduce system weight while ensuring high-frequency conductivity and welding reliability.