800V Charging "Charging Fundamentals"
Kab lus no feem ntau hais txog qee qhov kev cai ua ntej ntawm 800V charging pawg, ua ntej saib lub hauv paus ntsiab lus ntawm kev them nyiaj: thaum lub taub hau roj teeb txuas nrog lub tsheb kawg, pawg them nyiaj yuav muab ① low-voltage auxiliary DC fais fab mov rau lub tsheb. Thaum kawg, txhawm rau qhib lub built-in BMS (Battery Management System) ntawm lub tsheb hluav taws xob, tom qab ua kom tiav, ② lub tsheb kawg yuav txuas nrog rau pawg kawg los pauv cov kev them nqi yooj yim, xws li kev them nyiaj siab tshaj plaws ntawm lub tsheb. kawg thiab lub siab tshaj plaws tso zis zog ntawm pawg kawg, thiab ob sab yuav phim kom raug.
Tom qab sib phim kom raug, BMS (Battery Management System) ntawm lub tsheb kawg yuav xa cov ntaub ntawv xav tau lub zog rau pawg them, thiab pawg them nyiaj yuav kho nws cov zis voltage thiab tam sim no raws li cov ntaub ntawv no, thiab pib them lub tsheb, uas yog lub hauv paus ntsiab lus ntawm kev them nyiaj sib txuas, thiab nws yog ib qho tsim nyog rau peb kom paub peb tus kheej nrog nws ua ntej.
800V them: "Boost voltage lossis tam sim no"
Raws li txoj cai, peb xav muab lub zog them kom luv lub sijhawm them,Feem ntau muaj 2 txoj hauv kev: yog koj boost lub roj teeb lossis boost qhov voltage; raws li W = Pt, yog tias lub zog them ob npaug, ces lub sijhawm them nyiaj yuav raug muab halved; Raws li P = UI, yog tias qhov hluav taws xob lossis qhov tam sim no tau muab faib ua ob npaug, lub zog them tuaj yeem raug muab faib ua ob npaug, thiab qhov no tau hais ntau zaus, uas tseem suav tias yog kev nkag siab zoo.
Yog tias qhov tam sim no siab dua, yuav muaj 2 qhov teeb meem, qhov siab dua tam sim no, qhov loj thiab bulkier qhov tam sim no-nqa cable yuav tsum tau, uas yuav ua rau kom lub cheeb thiab qhov hnyav ntawm cov hlau, uas yuav nce tus nqi, thiab ntawm qhov tib lub sijhawm, nws tsis yooj yim rau cov neeg ua haujlwm ua haujlwm; Tsis tas li ntawd, raws li Q = I²Rt, yog tias qhov tam sim no siab dua, lub zog poob ntau dua, thiab qhov poob tau tshwm sim nyob rau hauv daim ntawv ntawm cov cua sov, uas kuj ntxiv rau cov kev tswj thermal, yog li tsis muaj kev ntseeg tias qhov nce ntawm them lub zog tsis tsim nyog kom paub txog qhov nce ntawm kev them lub zog los ntawm kev nce tam sim no tsis tu ncua.kev them nqi zog nce tsis yog qhov xav tau, tsis yog rau kev them nyiaj lossis rau hauv lub tsheb tsav.
Piv nrog rau tam sim no high-tam sim no them ceev ceev, high-voltage ceev them ua rau tsawg tshav kub thiab tsawg poob, tam sim no, yuav luag tag nrho cov mainstream tsheb tuam txhab uas muag tau txais txoj kev nce voltage, nyob rau hauv cov ntaub ntawv ntawm high-voltage ceev them, theoretically, them lub sij hawm. tuaj yeem ua luv luv los ntawm 50%, thiab qhov kev txhim kho hluav taws xob tuaj yeem yooj yim rub tawm lub zog them los ntawm 120KW txog 480KW.
800V them: "Voltage thiab tam sim no sib raug rau cov nyhuv thermal".
Tab sis txawm hais tias koj nce qhov voltage lossis tam sim no, ua ntej ntawm tag nrho cov, thaum koj lub zog them nyiaj nce, koj cov cua sov yuav tshwm sim, tab sis nce qhov hluav taws xob thiab qhov tam sim no ntawm qhov tshwm sim ntawm tshav kub tsis zoo ib yam, qee qhov cuam tshuam ntawm lub roj teeb sai dua. kuj me ntsis ntxiv, ib tug kuj qeeb tab sis thaum tshav kub kub zais ntau pom tseeb sab sauv txwv kuj pom tseeb dua. Tab sis tus qub yog preferable nyob rau hauv kev sib piv.
Raws li qhov tam sim no nyob rau hauv tus neeg xyuas pib los ntawm kev ua haujlwm qis, ua kom cov qauv hluav taws xob txo qis qhov xav tau cable loj, tawm cov cua sov tsawg dua, thiab txhim kho qhov tam sim no nyob rau tib lub sijhawm, qhov tam sim no-nqa ntu ntu ntawm qhov nce ua rau sab nrauv loj. txoj kab uas hla cable hnyav, thaum lub sij hawm them lub sij hawm ntawm lub tshav kub ntev yuav maj mam txhim kho, ntau covert, txoj kev ntawm lub roj teeb no muaj kev pheej hmoo ntau dua.
800V them: "Tswj pawg qee qhov kev sib tw ncaj qha"
800V ceev them kuj tseem muaj qee qhov kev xav tau sib txawv ntawm pawg kawg:
Yog tias koj saib ntawm lub cev, raws li qhov hluav taws xob nce ntxiv, qhov tsim ntawm cov cuab yeej cuam tshuam loj yog khi kom nce, xws li los ntawm IEC60664 cov pa phem theem 2 rwb thaiv tsev cov khoom siv hluav taws xob 1 qhov siab voltage ntaus ntawv yuav tsum tau los ntawm 2mm mus rau 4mm, tib lub rwb thaiv tsev. cov kev xav tau kev tiv thaiv yuav nce, yuav luag creepage nrug thiab rwb thaiv tsev yuav tsum tau nce los ntawm ib qho tseem ceeb ntawm ob, uas yuav tsum tau ib tug ntau dua voltage nyob rau hauv lub tsim ntawm yav dhau los.
Qhov no yuav tsum tau tsim cov txheej txheem hluav taws xob yav dhau los txhawm rau rov tsim kho qhov loj ntawm cov khoom siv cuam tshuam, suav nrog cov khoom sib txuas, cov kab tooj liab, cov pob qij txha, thiab lwm yam, ntxiv rau qhov nce voltage kuj tseem yuav ua rau cov kev xav tau ntau dua rau kev tua hluav taws, xav tau qee yam khoom siv. xws li fuses, hloov lub thawv, cov khoom sib txuas, thiab lwm yam, txhawm rau txhim kho cov kev xav tau, cov kev cai no kuj tseem siv tau rau kev tsim lub tsheb.
Lub high-voltage 800V charging system, raws li tau hais los saum toj no, yuav tsum tau ua kom lub zog sab nraud ua kua txias, cov cua txias ib txwm muaj ob qho tib si nquag thiab tsis ua kom txias tsis tuaj yeem ua tau raws li qhov yuav tsum tau ua rau cov phom phom phom rau lub tsheb kawg ntawm lub thermal. kev tswj hwm kuj tseem xav tau ntau dua li qhov xav tau, thiab qhov no ntawm qhov system kub yuav ua li cas txo thiab tswj los ntawm cov cuab yeej qib thiab qib system yog lub sijhawm tom ntej los txhim kho thiab daws qhov teeb meem ntawm qhov pom;
Tsis tas li ntawd, qhov no ntawm cov cua sov tsis yog tsuas yog cua sov los ntawm overcharging, tab sis kuj yog lub tshav kub ntawm overcharging, uas tsis yog tsuas yog ib feem ntawm lub system, tab sis kuj yog lub tshav kub ntawm overcharging. Nws tsis yog tsuas yog lub tshav kub coj los ntawm overcharging, tab sis kuj yog lub tshav kub coj los ntawm high-frequency hwj chim pab kiag li lawm, yog li yuav ua li cas los xyuas lub sij hawm ntawm lub sij hawm thiab ruaj khov, zoo, thiab muaj kev ruaj ntseg tshem tawm cov cua sov yog ib qho tseem ceeb heev, uas tsis tsuas yog muaj. cov khoom tawg tab sis kuj yog qhov kev tshawb pom ntawm lub cev, xws li kev them nyiaj kub ntawm lub sijhawm tiag tiag thiab kev saib xyuas zoo.
Tam sim no nyob rau hauv kev ua lag luam DC charging pawg tso zis hluav taws xob yog 400V, thiab tsis tuaj yeem ncaj qha mus rau 800V fais fab roj teeb them, yog li xav tau kev txhawb nqa DCDC cov khoom yuav 400V voltage rau 800V, thiab tom qab ntawd them lub roj teeb, uas yuav tsum muaj lub zog ntau dua kev hloov pauv, Kev siv cov silicon carbide los hloov cov tsoos IGBT module yog qhov kev xaiv tseem ceeb ntawm txoj kev, txawm hais tias silicon carbide module tuaj yeem ua rau lub zog tso tawm ntawm pawg them nyiaj, tab sis kuj yuav ua rau kom cov zis tawm ntawm pawg them nyiaj. Txawm hais tias silicon carbide modules tuaj yeem ua rau lub zog tso tawm ntawm pawg them nyiaj thiab txo qhov poob, tus nqi kuj nce ntau, thiab EMC cov kev xav tau siab dua.
Cov ntsiab lus. Qhov nce voltage yuav nyob rau hauv qhov system theem thiab cov cuab yeej qib yuav tsum tau txhim kho, theem system nrog rau kev tswj xyuas thermal, kev tiv thaiv kev them nyiaj, thiab lwm yam, thiab qib ntaus ntawv suav nrog qee cov khoom siv hlau nplaum thiab cov khoom siv hluav taws xob los txhim kho.
Post lub sij hawm: Jan-30-2024