Kev sim tiv thaiv av rau AC / DC them cov pob zeb rau cov tsheb fais fab tshiab

1. Kev tiv thaiv av ntawm cov pawg them hluav taws xob

Cov chaw them hluav taws xob EV muaj ob hom:Cov chaw them hluav taws xob ACthiab DC charging piles. AC charging piles muab 220V AC fais fab, uas hloov mus ua high-voltage DC fais fab los ntawm lub charger on-board kom them lub roj teeb fais fab.DC charging pilesmuab 380V peb-theem AC fais fab, uas ncaj qha them lub roj teeb los ntawm qhov chaw them ceev yam tsis tau dhau los ntawm lub charger on-board. Lub teb chaws tus qauv GB / T20234.1 qhia meej txog cov kev cai rau lub tsheb interfaces thiab lub hwj chim muab interfaces.Cov chaw them hluav taws xob AC EVsiv lub teb chaws tus qauv xya-pin interface, thaumCov khoom siv them fais DCsiv lub teb chaws tus qauv cuaj-pin interface. Cov PE pins ntawm ob lub charging interfaces nyob rau sab ntawm lub tsheb yog ob qho tib si grounding terminals (saib Daim Duab 1). Lub luag haujlwm ntawm lub av xaim PE yog kom ntseeg tau av lub cev tsheb fais fab los ntawm ACchaw them fais fab tshebHauv tus qauv teb chaws GB/T 18487.1, cov xov hlau av PE ntawm cov khoom siv fais fab yuav tsum txuas nrog lub cev tsheb fais fab av (PE tus pin hauv Daim Duab 1) rau hom them fais fab ntawm lub tsheb fais fab kom ua haujlwm li qub.

Daim Duab 1. PE Pin ntawm Lub Tsheb-Sab Them Nqi Interface

Siv txoj kev them nyiaj uas muaj ACchaw them fais fab tshebsiv lub qhov txuas ob txoj kev rau lub tsheb los txuas raulub tsheb fais fab chaw nres nkoj themua piv txwv li, lub voj voog tswj hwm ntawm lub kaw lus them nqi no raug tshuaj xyuas, thiab nws daim duab qhia txog lub voj voog tau qhia nyob rau hauv Daim Duab 2.

Thaum cov khoom siv fais fab raug teeb tsa kom them, yog tias cov khoom siv tsis muaj qhov tsis raug, qhov hluav taws xob ntawm qhov chaw kuaj pom 1 yuav tsum yog 12V.

Thaum tus neeg teb xov tooj tuav rab phom them thiab nias lub xauv tshuab, S3 kaw, tab sis lub tsheb interface tsis tau txuas tag nrho, qhov hluav taws xob ntawm qhov chaw kuaj pom 1 yog 9V.

Thaum lubrab phom themyog txuas tag nrho rau lub tsheb lub chaw them fais fab, S2 kaw. Lub sijhawm no, qhov hluav taws xob ntawm qhov chaw kuaj pom 1 poob qis sai sai. Cov khoom siv fais fab lees paub lub teeb liab ntawm CC kev sib txuas thiab ntes tau qhov tam sim no uas lub xov hlau them fais fab tuaj yeem tiv taus, hloov qhov hloov S1 ntawm 12V kawg mus rau PWM kawg.

Thaum lub zog hluav taws xob ntawm qhov chaw kuaj pom 1 poob rau 6V, hloov K1 thiab K2 ntawm cov khoom siv fais fab ze rau qhov tam sim no tso zis, yog li ua tiav lub voj voog fais fab. Tom qab lub tsheb fais fab thiab cov khoom siv fais fab tsim kev sib txuas hluav taws xob, lub cuab yeej tswj tsheb txiav txim siab qhov muaj peev xwm muab hluav taws xob siab tshaj plaws ntawm cov khoom siv fais fab los ntawm kev txiav txim siab lub voj voog ua haujlwm ntawm lub teeb liab PWM ntawm qhov chaw kuaj pom 2. Piv txwv li, rau lub pob them 16A, lub voj voog ua haujlwm yog 73.4%, yog li ntawd lub zog hluav taws xob ntawm qhov kawg CP hloov pauv ntawm 6V thiab -12V, thaum lub zog hluav taws xob ntawm qhov kawg CC ... Lub zog hluav taws xob kawg poob ntawm 4.9V (xeev txuas) mus rau 1.4V (xeev them).

Thaum lub chaw tswj hwm lub tsheb txiav txim siab tias qhov kev sib txuas them tau txuas tag nrho (piv txwv li, S3 thiab S2 raug kaw) thiab ua tiav qhov kev teeb tsa ntawm lub charger on-board qhov siab tshaj plaws tso cai tam sim no (S1 hloov mus rau PWM davhlau ya nyob twg, K1 thiab K2 raug kaw), lub charger on-board pib them lub tsheb fais fab.

Thaum lub sijhawm ua haujlwm no, yog tias cov xov hlau PE av raug txiav tawm, yuav tsis muaj kev hloov pauv hluav taws xob ntawm qhov chaw kuaj pom, lub voj voog fais fab tsis tuaj yeem ua tiav, thiab kev sib txuas hluav taws xob tsis tuaj yeem tsim ntawm lub tsheb fais fab thiab cov khoom siv fais fab. Hauv qhov no, lub charger uas nyob hauv lub tsheb yuav nyob rau hauv lub xeev fais fab tua.

2. Kev sim txiav tawm ntawm lub zog them hluav taws xob

Yog tias qhov grounding ntawm ib qhoAC charging pile lub charging systemYog tias muaj teeb meem ua haujlwm tsis zoo, cov khoom siv fais fab yuav xau hluav taws xob, ua rau hluav taws xob poob siab thiab raug mob. Yog li ntawd, kev kuaj thiab tshuaj xyuas cov pawg them hluav taws xob yog qhov tseem ceeb. Raws li cov qauv xws li GB/T20324, GB/T 18487, thiab NB/T 33008, kev kuaj AC charging pile feem ntau suav nrog kev tshuaj xyuas dav dav, kev sim hloov pauv ntawm lub voj voog, thiab kev sim kev sib txuas tsis zoo. Siv BAIC EV200 ua piv txwv, qhov cuam tshuam ntawm PE grounding tsis zoo rau qhov xwm txheej them ntawm lub kaw lus them hluav taws xob tau pom los ntawm kev sim cov kev hloov pauv tam sim no ntawm lub charger hauv.

Hauv lub kaw lus qhia hauv Daim Duab 3, cov qhov kawg CC thiab CP ntawm sab laug ntawm lub charger hauv lub tsheb yog cov kab teeb liab tswj kev them; PE yog cov xov hlau hauv av; thiab L thiab N yog cov qhov kawg 220V AC nkag.

Cov terminals nyob rau sab xis ntawm daim duab charger on-board yog cov terminals sib txuas lus qis-voltage. Lawv lub luag haujlwm tseem ceeb yog pub rov qab lub teeb liab charger on-board mus rau VCU kev sib txuas kab, qhib lub teeb liab charging wake-up kab kom sawv lub vaj huam sib luag qhia txog qhov xwm txheej txuas, thiab rau lub charger kom sawv VCU thiab BMS. Lub VCU ces sawv lub vaj huam sib luag kom pib qhia txog qhov xwm txheej them. Cov relays tseem ceeb zoo thiab tsis zoo hauv lub roj teeb fais fab raug tswj los ntawm BMS kom kaw los ntawm cov lus txib los ntawm VCU, ua tiav cov txheej txheem them roj teeb fais fab. Lub terminal nyob rau hauv qab ntawm lub charger on-board hauv Daim Duab 3, txuas nrog lub thawv tswj high-voltage, yog lub high-voltage DC output terminal.

Hauv kev sim PE grounding fault, ob lub clamps tam sim no tau siv los ntsuas cov input thiab output currents tib lub sijhawm. Ib qho PE open-circuit fault tau teeb tsa los ntawm kev siv lub zog AC uas ua los ntawm nws tus kheej. Thaum cov kab PE feem ntau raug grounded, lub grounding switch yog ON. Thaum lub clamp tam sim no siv rau ntawm kab L (lossis N), qhov ntsuas AC input current ntawm lub charger hauv lub tsheb yog kwv yees li 16A. Thaum lwm lub clamp tam sim no siv rau ntawm DC output power terminal ntawm lub charger hauv lub tsheb, qhov ntsuas tam sim no yog kwv yees li 9A.

Thaum lub xov hlau PE av raug txiav tawm thiab lub qhov hloov av raug OFF, qhov ntsuas AC input tam sim no ntawm lub charger hauv lub tsheb yog 0A, thiab DC output fais fab tam sim no kuj yog 0A. Thaum rov ua qhov kev sim qhib-circuit, ob qho tam sim ntawd rov qab mus rau 0A. Qhov kev sim qhib-circuit no ntawm lub davhlau ya nyob twg PE qhia tau tias thaum lub xov hlau PE av raug txiav tawm, tsis muaj tam sim no ntawm cov davhlau ya nyob twg nkag thiab tawm ntawm lub charger hauv lub tsheb, txhais tau tias lub charger hauv lub tsheb tsis ua haujlwm thiab yog li ntawd tsis tso tawm hluav taws xob high-voltage mus rau lub thawv tswj high-voltage, tiv thaiv lub roj teeb fais fab kom tsis txhob them.

Kev tiv thaiv av rau cov chaw them hluav taws xob AC yog qhov tseem ceeb. Yog tsis muaj kev tiv thaiv av, cov chaw them hluav taws xob tuaj yeem ua rau muaj kev phom sij ntawm hluav taws xob. Vim yog kev tiv thaiv tus kheej ntawm lub voj voog them hluav taws xob, kev sib txuas tsis tuaj yeem tsim tau ntawm lub tsheb fais fab thiab cov khoom siv fais fab, thiab lub charger hauv tsheb yuav tsis ua haujlwm.

—Qhov kawg—