Yuav ua li cas tseem ceeb npaum li cas diodes rau kev nyab xeeb ntawm lub zog cia tshuab?

1, anti thim rov qab them kev tiv thaiv: lub cev thaiv lub cev uas thaiv hluav taws xob rov qab
Hauv photovoltaic lub zog cia tshuab, Anti rov qab them diodes (thaiv diodes (thaiv diodes) tau txuas nrog hauv cov photovoltaic array thiab roj teeb. Lawv lub luag haujlwm tseem ceeb yog los tiv thaiv lub roj teeb los ntawm kev rho tawm rov qab los ntawm photovoltaic array thaum hmo ntuj lossis los nag hnub. Thaum cov zis hluav taws xob ntawm lub photovoltaic module yog qis dua li lub roj teeb voltes, lub zog ntawm lub roj teeb hluav taws xob, ua rau tus qauv los ua kom sov los yog txawm hlawv.

Cov Ntaub Ntawv Raug: Lub teb chaws suab puam photovoltaic lub chaw nres tsheb fais fab tsis tau los txhim kho Anti rov qab them cov kev them nqi rov qab. Tom qab peb {{{{-}}}} day} sand sand sandstorm, qhov kub ntawm lub photovoltaic array txawv txav mus rau 85 degree, uas ua rau ib lub thawv hlws phom melting. Tom qab sim, qhov thim rov qab tam sim no 2.3 npaug ntawm kev ua haujlwm tam sim no, ua rau cov kab xev ham ntawm cov tivthaiv kom yaj.

Kev tsim kho kev ua haujlwm tshiab: Niaj hnub no lub zog cia lub tshuab siv schottky diodes nrog qis tshaj rau pem hauv ntej voltage poob (vf<0.3V), which can reduce energy loss by 1.2% compared to traditional silicon diodes (Vf ≈ 0.7V). For example, Infineon's CoolSiC ™ Schottky diodes can still maintain reverse leakage current<1 μ A at high temperatures of 150 ℃, which is three orders of magnitude lower than silicon-based devices.

2, Kev tiv thaiv dhau los ntawm: Kev txawj ntse hloov mus daws teeb meem kub nyhuv
Nyob rau hauv cov series circuital ntawm photovoltaic, bypass diodes conn້ອງ txuas rau hauv parallel ntawm ob qho kawg ntawm ib qho module. Thaum tus qauv tau thaiv lossis yuam kev, txoj kev coj ua los ua ib qho kev hla dhau tam sim no, zam lwm cov khoom siv uas rov qab los ntawm kev ua tsis ncaj. Yog tias muaj qhov tsis muaj kev tiv thaiv dhau los, feem ntau thaiv kev yuav haus lub zog los ntawm lwm yam kev kub siab (txog 200 degree) thiab ua rau "kub nyhuv".

Failure analysis: A module fire accident occurred at a certain offshore photovoltaic power station. Investigation found that due to improper selection of bypass diodes (reverse recovery time Trr>200ns), cov diodes tsis ua raws li kev hloov pauv ntawm huab npog sai, ua rau muaj hluav taws xob roj teeb sab hauv hauv module.

Kev Siv Kev Tshawb Fawb: Daim ntawv thov ntawm Thib Peb - tiam cov ntaub ntawv semiconductor tau txhim kho kev ua tau zoo ntawm bypass diodes. Cree's Gan Hemt Bypass module tau ua kom rov qab lub sijhawm rov qab los rau hauv 10000v, ua rau nws muaj kev hloov kho hauv av loj hauv cov chaw nres tsheb loj.

3, Kev Tiv Thaiv Kev Tiv Thaiv Kev Tiv Thaiv: Ib lub teb nrawm rau kev poob siab
Lub zog cia cov tshuab tau nquag mus rau kev sib tw hloov pauv thaum daim phiaj / tawm daim phiaj hloov, xob laim, thiab lwm yam xwm txheej. Cov TVS (Transient voltion suppression) Cov ntsiab lus tseem ceeb suav nrog:

Hloov Siab Yuam Kev Voltage (VBR): Yuav tsum 10% -20% siab dua qhov kev ua haujlwm siab tshaj plaws ntawm lub system
Peak Mem tes hluav taws xob (PPPM): txiav txim siab soj ntsuam muaj peev xwm
Clamp Voltage (VC): Muaj kev cuam tshuam cov nyhuv tiv thaiv tseeb
Daim Ntawv Thov piv txwv: Tesla PowerWall Zog Cia Khoom Admops, nrog PPPM} Kuv tuaj yeem ua tau zoo rau 24V kev voj voog hauv 12V system. Nyob rau hauv UL9540A thermal khiav kev ntsuam xyuas, qhov kev daws teeb meem no txo ​​qhov cub hluav taws xob saum npoo los ntawm 42%.

4, Thermal khiav khiav tawm: Cov kab kawg ntawm kev tiv thaiv rau kev nyab xeeb system
Hauv lithium {{0} ion roj teeb lub zog cia cov khoom siv lub zog, kev tswj hwm tsheb (kev tiv thaiv roj teeb ua ke los tsim kev tiv thaiv thermal khiav tawm:

Thawj qhov kev tiv thaiv qib: Thaum ntsuas qhov kub thiab txias pom qhov txawv txav, cov BMS txiav tawm ntawm kev them cov Circuit Court los ntawm Mosfet
Kev Tiv Thaiv Thib Ob: Yog cov Mosfet tsis ua, TVs Diode triggers trigchers faus
Kev tiv thaiv qib peb: qhov txuas ntawm tawg kev hloov Valve thiab aerosol tua hluav taws kub extinguishing system
Cov ntaub ntawv txhawb nqa: Ningde Times 'Zog Cia Roj Teeb Ntawm Sic Mosfet los ntawm 0.5m / s, thiab siv zog ntau dua 10 zaug lub sijhawm teb ntawm cov hluav taws tiv thaiv kab ke.

5, Qhov Txheej Txheem Qeb Kev Txhim Kho Dua Tshiab: Kev Tawm Tsam los ntawm cov khoom lag luam kom architecture
Kev Tsim Ua ke: Smartli 3.0 Zog siv hluav taws xob tsim los ntawm Huawei digital lub zog sib xyaw ua ke, thiab cov neeg ua haujlwm txo qis los ntawm 60%.
Cov thev naus laus zis ntawm kev siv hluav taws xob: Power PowerStack khoom cia siv cov kev pheej hmoo ntawm thermal runaway 48 teev ua ntej nrog lub tswb cuav ntawm tsawg dua 0.1%.
Ua kua txias Tswj txoj kev sib koom tes: BYD lub voos zog cia khoom siv rau hauv qab 45℃rov qab los ntawm 78% piv rau cov txheej txheem cua txias.
6, Cov Qauv thiab Ntawv Pov Thawj: Quantitative paub tseeb ntawm kev ruaj ntseg
Cov qauv kev nyab xeeb hauv ntiaj teb kev nyab xeeb muaj tseeb rau kev ua si:

UL 9540: Xav kom lub zog khaws cia rau kom tswj cov rwb thaiv tsev thaum 1.5 zaug qhov ntsuas rov qab voltage
IEC 62619: TVs Diodes yuav tsum tau dhau 8/20 μ S wur wurvform thiab 5ka surge xeem
GB / T 36547: Xav kom Anti rov qab them nyiaj rau pem hauv ntej voltage poob txawv txav tsawg dua los yog sib npaug rau 5%
Cov ntawv pov thawj kev xyaum: LG Tshiab Zog Lub Zog Hluav Taws Xob Khoom Siv Zog Khoom Siv UPS9540A ntawv pov thawj. Nws siv infineon 1200v igbt modules nrog ua - hauv TVs