"Ib tug 23-xyoo-laus tus neeg saib xyuas lub davhlau ntawm Tuam Tshoj Southern Airlines raug hluav taws xob thaum tham ntawm nws iPhone5 thaum nws them nyiaj", cov xov xwm tau nyiam thoob plaws hauv online. Cov chargers puas tuaj yeem ua rau muaj kev phom sij? Cov kws tshaj lij txheeb xyuas qhov hloov pauv hloov pauv hauv lub xov tooj ntawm lub xov tooj ntawm tes, 220VAC hloov pauv tam sim no mus rau DC kawg, thiab los ntawm cov ntaub ntawv kab mus rau lub plhaub hlau ntawm lub xov tooj ntawm tes, thiab thaum kawg ua rau hluav taws xob, qhov tshwm sim ntawm irreversible xwm txheej.
Yog li vim li cas thiaj li tso zis ntawm lub xov tooj txawb charger tuaj nrog 220V AC? Peb yuav tsum xyuam xim rau dab tsi hauv kev xaiv cov khoom siv hluav taws xob cais tawm? Yuav ua li cas kom paub qhov txawv ntawm cov khoom siv hluav taws xob sib cais thiab tsis cais tawm? Kev pom zoo hauv kev lag luam yog:
1. cais fais fab mov: Tsis muaj kev sib txuas hluav taws xob ncaj qha ntawm lub voj voog input thiab lub voj voog ntawm cov khoom siv hluav taws xob, thiab cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob yog nyob rau hauv ib qho hluav taws xob tiv thaiv siab tsis muaj lub voj voog tam sim no, raws li pom hauv daim duab 1:
2, tsis muaj hluav taws xob sib cais:muaj ib lub voj ncaj nraim tam sim no ntawm qhov kev tawm tswv yim thiab cov zis, piv txwv li, cov tswv yim thiab cov zis muaj ntau. Ib qho kev sib cais flyback Circuit Court thiab ib qho hluav taws xob tsis sib cais BUCK raug coj los ua piv txwv, raws li pom hauv daim duab 2.Daim duab 1 Cov khoom siv hluav taws xob cais tawm nrog cov hloov pauv.
1.Qhov zoo thiab qhov tsis zoo ntawm cov khoom siv hluav taws xob sib cais thiab cov khoom siv hluav taws xob tsis sib cais
Raws li cov ntsiab lus saum toj no, rau cov khoom siv hluav taws xob zoo sib xws, cov khoom siv hluav taws xob tsis sib cais feem ntau suav nrog Buck, Boost, buck-boost, thiab lwm yam. Cov hluav taws xob sib cais feem ntau muaj ntau yam flyback, pem hauv ntej, ib nrab-bridge, LLC thiab lwm yam topologies nrog cais transformers.
Ua ke nrog cov khoom siv hluav taws xob sib cais thiab cov khoom siv hluav taws xob tsis sib cais, peb muaj peev xwm intuitively tau txais qee qhov ntawm lawv qhov zoo thiab qhov tsis zoo, qhov zoo thiab qhov tsis zoo ntawm ob qhov yuav luag sib txawv.
Txhawm rau siv cov khoom siv hluav taws xob sib cais lossis tsis sib cais, nws yuav tsum nkag siab tias qhov project tiag tiag xav tau cov khoom siv hluav taws xob li cas, tab sis ua ntej ntawd, koj tuaj yeem nkag siab qhov sib txawv tseem ceeb ntawm cov khoom siv hluav taws xob sib cais thiab tsis sib xws:
① Cov kev sib cais module muaj kev ntseeg siab, tab sis tus nqi siab thiab ua haujlwm qis.
②Cov qauv ntawm cov qauv tsis raug cais tawm yog qhov yooj yim heev, tus nqi qis, kev ua haujlwm siab, thiab kev ua haujlwm tsis zoo.
Yog li ntawd, nyob rau hauv lub sijhawm hauv qab no, nws raug nquahu kom siv cov khoom siv hluav taws xob cais tawm:
① Muaj feem cuam tshuam tau hluav taws xob, xws li kev siv hluav taws xob los ntawm kab hluav taws xob mus rau qhov tsawg-voltage DC zaus, yuav tsum tau siv cov khoom siv hluav taws xob AC-DC cais;
② Lub tsheb npav sib txuas lus xa cov ntaub ntawv los ntawm lub cev sib txuas xws li RS-232, RS-485 thiab tus tswj hwm hauv cheeb tsam network (CAN). Txhua qhov kev sib txuas ntawm cov tshuab no tau nruab nrog nws tus kheej lub zog, thiab qhov kev ncua deb ntawm cov tshuab feem ntau nyob deb. Yog li ntawd, peb feem ntau yuav tsum tau cais cov khoom siv hluav taws xob rau kev sib cais hluav taws xob kom ntseeg tau tias kev ruaj ntseg ntawm lub cev. Los ntawm kev sib cais thiab txiav tawm lub voj voog hauv av, lub kaw lus raug tiv thaiv los ntawm kev cuam tshuam ntawm qhov hluav taws xob hloov pauv siab thiab qhov teeb meem cuam tshuam raug txo.
③ Rau cov chaw nres nkoj I / O sab nraud, kom ntseeg tau tias kev ua haujlwm ruaj khov ntawm lub kaw lus, nws raug nquahu kom cais lub zog ntawm I / O cov chaw nres nkoj.
Cov lus xaus yog qhia hauv Table 1, thiab qhov zoo thiab qhov tsis zoo ntawm ob qhov yuav luag sib txawv.
Table 1 Qhov zoo thiab qhov tsis zoo ntawm cov khoom siv hluav taws xob sib cais thiab tsis cais tawm
2, Kev xaiv ntawm lub zog cais thiab lub zog tsis sib cais
Los ntawm kev nkag siab txog qhov zoo thiab qhov tsis zoo ntawm cov khoom siv hluav taws xob sib cais thiab tsis sib cais, txhua tus muaj nws tus kheej qhov zoo, thiab peb tau muaj peev xwm txiav txim siab txog qee qhov kev xaiv khoom siv hluav taws xob:
① Cov khoom siv hluav taws xob feem ntau yog siv los txhim kho kev tiv thaiv kev cuam tshuam thiab ua kom ntseeg tau.
② Fais fab mov ntawm IC los yog ib feem ntawm lub Circuit Court nyob rau hauv lub Circuit Court board, pib los ntawm cov nqi-zoo thiab ntim, nyiam siv cov txheej txheem uas tsis yog-kev cais.
③ Rau kev nyab xeeb rau kev nyab xeeb, yog tias koj xav tau txuas AC-DC ntawm Lub Nroog Hluav Taws Xob, lossis cov khoom siv hluav taws xob rau kev siv kho mob, txhawm rau ua kom muaj kev nyab xeeb ntawm tus neeg, koj yuav tsum siv lub zog hluav taws xob. Qee lub sij hawm, koj yuav tsum siv cov khoom siv hluav taws xob los txhawb kev sib cais.
④ Rau cov khoom siv hluav taws xob ntawm cov chaw taws teeb muaj kev sib txuas lus, txhawm rau txo qhov cuam tshuam ntawm thaj chaw sib txawv thiab kev cuam tshuam ntawm kev sib txuas, nws feem ntau yog siv rau kev sib cais fais fab rau lub zog txhua qhov kev sib txuas lus ib leeg.
⑤ Rau kev siv lub roj teeb fais fab, tsis siv hluav taws xob cais tawm yog siv rau kev siv roj teeb nruj.
Los ntawm kev nkag siab txog qhov zoo thiab qhov tsis zoo ntawm kev sib cais thiab lub zog tsis sib cais, lawv muaj lawv tus kheej qhov zoo. Rau qee qhov feem ntau siv embedded fais fab mov tsim, peb tuaj yeem sau cov sijhawm ntawm nws xaiv.
1.Isolation fais fab mov
Txhawm rau txhim kho kev tiv thaiv kev cuam tshuam kev ua haujlwm thiab ua kom muaj kev ntseeg siab, nws feem ntau yog siv rau kev sib cais.
Rau kev nyab xeeb rau kev ruaj ntseg, yog tias koj xav tau txuas mus rau AC-DC ntawm Lub Nroog Hluav Taws Xob, lossis cov khoom siv hluav taws xob rau kev kho mob, thiab cov khoom siv dawb, txhawm rau ua kom muaj kev nyab xeeb ntawm tus neeg, koj yuav tsum siv cov khoom siv hluav taws xob, xws li MPS MP020, rau cov lus qhia thawj AC- DC, haum rau 1 ~ 10W daim ntawv thov;
Rau cov khoom siv hluav taws xob ntawm kev sib txuas lus hauv chaw taws teeb, txhawm rau txo qhov cuam tshuam ntawm thaj chaw sib txawv thiab kev cuam tshuam ntawm kev sib txuas, nws feem ntau yog siv rau kev sib cais fais fab rau lub zog txhua qhov kev sib txuas lus ib leeg.
2. Cov khoom siv hluav taws xob tsis sib cais
Lub IC lossis qee qhov hauv Circuit Court board yog siv los ntawm tus nqi piv thiab ntim, thiab cov kev daws teeb meem tsis yog kev sib cais yog nyiam; xws li MPS MP150/157/MP174 series buck uas tsis yog cais AC-DC, haum rau 1 ~ 5W;
Rau cov ntaub ntawv ntawm kev ua hauj lwm voltage qis dua 36V, lub roj teeb yog siv los muab lub zog, thiab muaj cov kev cai nruj rau kev ua siab ntev, thiab cov khoom siv hluav taws xob tsis sib cais yog nyiam, xws li MPS's MP2451 / MPQ2451.
Qhov zoo thiab qhov tsis zoo ntawm kev sib cais fais fab thiab cov khoom siv hluav taws xob tsis sib cais
Los ntawm kev nkag siab txog qhov zoo thiab qhov tsis zoo ntawm kev sib cais thiab tsis yog-kev cais lub zog, lawv muaj lawv tus kheej qhov zoo. Rau qee qhov kev xaiv embedded fais fab mov, peb tuaj yeem ua raws li cov kev txiav txim hauv qab no:
Rau kev nyab xeeb, yog tias koj xav tau txuas mus rau AC-DC ntawm Lub Nroog Hluav Taws Xob, lossis cov khoom siv hluav taws xob rau kev kho mob, txhawm rau ua kom muaj kev nyab xeeb ntawm tus neeg, koj yuav tsum siv lub zog hluav taws xob, thiab qee zaus yuav tsum tau siv rau txhim khu kev sib cais fais fab mov.
Feem ntau, qhov yuav tsum tau muaj rau module fais fab kev rho tawm voltage tsis siab heev, tab sis ntau dua kev rho tawm voltage tuaj yeem xyuas kom meej tias cov khoom siv hluav taws xob module muaj qhov xau me me, kev ruaj ntseg thiab kev ntseeg siab dua, thiab EMC cov yam ntxwv zoo dua. Yog li Qhov kev sib cais dav dav yog siab dua 1500VDC.
3, kev ceev faj rau kev xaiv ntawm kev sib cais fais fab module
Qhov kev sib cais ntawm cov khoom siv hluav taws xob kuj hu ua hluav taws xob tiv thaiv lub zog hauv GB-4943 tus qauv hauv tebchaws. Tus qauv GB-4943 no yog cov qauv kev ruaj ntseg ntawm cov khoom siv ntaub ntawv uas peb feem ntau hais, los tiv thaiv tib neeg los ntawm kev ua lub cev thiab hluav taws xob hauv teb chaws tus qauv, suav nrog kev zam kom tsis txhob ua rau tib neeg raug kev puas tsuaj los ntawm hluav taws xob, kev puas tsuaj rau lub cev, tawg. Raws li qhia hauv qab no, daim duab kos duab ntawm kev sib cais fais fab mov.
Isolation power structure diagram
Raws li qhov taw qhia tseem ceeb ntawm lub zog module, tus qauv ntawm kev sib cais thiab kev ntsuas siab-resistant kuj tau teev tseg hauv tus qauv. Feem ntau, qhov sib npaug muaj peev xwm sib txuas xeem feem ntau yog siv thaum sim yooj yim. Qhov kev sib txuas schematic daim duab yog raws li nram no:
Daim duab tseem ceeb ntawm kev sib cais tsis kam
Txoj Kev Xeem:
Teem lub voltage ntawm qhov hluav taws xob tsis kam mus rau qhov ntsuas hluav taws xob tiv thaiv tus nqi, qhov tam sim no tau teeb tsa raws li tus nqi xau, thiab lub sijhawm teem rau lub sijhawm ntsuas tus nqi;
Kev khiav hauj lwm siab ntsuas pib ntsuas thiab pib nias. Thaum lub sij hawm lub sij hawm xeem, lub module yuav tsum unpattered thiab tsis ya arc.
Nco ntsoov tias lub vuam fais fab module yuav tsum raug xaiv thaum lub sijhawm kuaj kom tsis txhob rov vuam dua thiab ua rau lub zog hluav taws xob puas.
Ntxiv thiab, xyuam xim:
1. Ua tib zoo saib seb nws yog AC-DC lossis DC-DC.
2. Kev rho tawm ntawm kev rho tawm fais fab module. Piv txwv li, seb 1000V DC puas ua tau raws li qhov yuav tsum tau ua ntawm rwb thaiv tsev.
3. Txawm hais tias qhov kev sib cais fais fab module muaj qhov ntsuas kev ntseeg tau zoo. Lub hwj chim module yuav tsum tau ua los ntawm kev ntsuas kev ua tau zoo, kev ntsuas siab, lub sijhawm ntev, kev ntsuas kev ntseeg tau, EMC electromagnetic compatibility test, ntsuas kub thiab qis, ntsuas huab cua, kuaj lub neej, kuaj kev ruaj ntseg, thiab lwm yam.
4. Seb cov kab ntau lawm ntawm cov khoom siv hluav taws xob cais tawm yog tus qauv. Lub hwj chim module ntau lawm kab yuav tsum dhau ib tug xov tooj ntawm cov ntawv pov thawj thoob ntiaj teb xws li ISO9001, ISO14001, OHSAS18001, thiab lwm yam, raws li qhia hauv daim duab 3 hauv qab no.
Daim duab 3 ISO certification
5. Txawm hais tias qhov kev sib cais fais fab module siv rau qhov hnyav ib puag ncig xws li kev lag luam thiab tsheb. Lub hwj chim module tsis yog tsuas yog siv rau qhov hnyav kev lag luam ib puag ncig, tab sis kuj nyob rau hauv BMS kev tswj hwm ntawm lub zog tshiab tsheb.
4,Tnws kev nkag siab ntawm kev cais lub zog thiab lub zog tsis nyob ib leeg
Ua ntej tshaj plaws, kev nkag siab tsis meej yog piav qhia: Ntau tus neeg xav tias lub zog tsis sib cais tsis zoo li lub zog cais tawm, vim hais tias lub zog cais tawm yog kim, yog li nws yuav tsum kim.
Vim li cas nws thiaj zoo dua los siv lub zog cais tawm dua li qhov tsis nyob ib leeg hauv kev xav ntawm txhua tus tam sim no? Qhov tseeb, lub tswv yim no yog nyob rau hauv lub tswv yim ob peb xyoos dhau los. Vim tias qhov tsis muaj kev nyob ib leeg nyob rau xyoo dhau los yeej tsis muaj kev sib cais thiab kev ruaj ntseg, tab sis nrog kev hloov tshiab ntawm R & D thev naus laus zis, kev tsis sib cais yog tam sim no paub tab thiab nws tau ruaj khov dua. Hais txog kev ruaj ntseg, qhov tseeb, tsis yog-kev cais lub zog kuj muaj kev nyab xeeb heev. Tsuav tus qauv hloov me ntsis, nws tseem muaj kev nyab xeeb rau tib neeg lub cev. Tib yam yog vim li cas, lub zog tsis muaj kev sib cais kuj tuaj yeem dhau ntau cov qauv kev ruaj ntseg, xws li: Ultuvsaace.
Qhov tseeb, lub hauv paus ua rau kev puas tsuaj rau cov khoom siv hluav taws xob tsis sib cais yog tshwm sim los ntawm qhov hluav taws xob nce siab ntawm ob qho kawg ntawm lub hwj chim AC kab. Nws tseem tuaj yeem hais tau tias xob laim nthwv dej nce siab. Qhov hluav taws xob no yog qhov hluav taws xob siab tam sim ntawm ob qho kawg ntawm qhov hluav taws xob AC kab, qee zaum siab li peb txhiab volts. Tab sis lub sij hawm luv heev thiab lub zog muaj zog heev. Nws yuav tshwm sim thaum nws yog cua ntsawj ntshab, los yog ntawm tib AC kab, thaum lub load loj yog txiav, vim hais tias tam sim no inertia kuj tshwm sim. Kev rho tawm BUCK Circuit Court tam sim ntawd yuav xa mus rau qhov tso zis, ua rau lub nplhaib tshawb pom tsis tu ncua, lossis ua rau lub nti ua kom puas, ua rau 300V dhau, thiab hlawv tag nrho lub teeb. Rau kev sib cais los tiv thaiv kev ua phem rau lub zog, MOS yuav raug puas tsuaj. Qhov tshwm sim yog khaws cia, nti, thiab MOS raj raug hlawv tawm. Tam sim no LED-driven fais fab mov tsis zoo thaum siv, thiab ntau dua 80% yog ob qhov xwm txheej zoo sib xws. Ntxiv mus, qhov me me hloov fais fab mov, txawm tias nws yog lub hwj chim adapter, feem ntau puas los ntawm qhov tshwm sim, uas yog tshwm sim los ntawm yoj voltage, thiab nyob rau hauv lub LED fais fab mov, nws yog ntau dua. Qhov no yog vim hais tias cov yam ntxwv load ntawm LED yog tshwj xeeb yog ntshai ntawm nthwv dej. Qhov voltage.
Raws li txoj kev xav dav dav, qhov tsawg ntawm cov khoom siv hluav taws xob hauv hluav taws xob, qhov kev ntseeg siab dua, thiab qhov qis dua ntawm cov khoom siv hluav taws xob hluav taws xob muaj kev ntseeg siab. Qhov tseeb, tsis yog-isolation circuits tsawg dua li kev sib cais circuits. Vim li cas qhov kev sib cais Circuit Court kev ntseeg siab yog siab? Qhov tseeb, nws tsis yog kev ntseeg siab, tab sis tsis yog-kev sib cais Circuit Court yog rhiab heev rau qhov nce siab, tsis muaj peev xwm inhibitory, thiab kev sib cais Circuit Court, vim hais tias lub zog nkag mus rau hauv lub transformer ua ntej, thiab ces thauj mus rau LED load los ntawm transformer. Lub pob hluav taws xob yog ib feem ntawm cov khoom siv hluav taws xob ncaj qha mus rau LED load. Yog li ntawd, yav tas los muaj lub caij nyoog muaj zog ntawm kev puas tsuaj rau surge nyob rau hauv suppression thiab attenuation, yog li nws yog me me. Qhov tseeb, qhov teeb meem ntawm kev tsis sib cais feem ntau yog vim qhov teeb meem ntawm kev nce siab. Tam sim no, qhov teeb meem no yog tias tsuas yog cov teeb ci LED tuaj yeem pom los ntawm qhov tshwm sim uas lawv tuaj yeem pom los ntawm qhov tshwm sim. Yog li ntawd, ntau tus neeg tsis tau npaj txoj kev tiv thaiv zoo. Ntau tus neeg tsis paub dab tsi yoj voltage yog, ntau tus neeg. Cov teeb ci LED tawg, thiab qhov laj thawj nrhiav tsis pom. Thaum kawg, tsuas muaj ib kab lus xwb. Qhov no fais fab mov yog dab tsi tsis ruaj tsis khov thiab nws yuav daws tau. Qhov tshwj xeeb tsis ruaj tsis khov, nws tsis paub.
Cov khoom siv hluav taws xob tsis sib cais yog qhov ua tau zoo, thiab qhov thib ob yog tus nqi yog qhov zoo dua.
Lub zog tsis sib cais yog tsim rau lub sijhawm: Ua ntej ntawm tag nrho cov, nws yog lub teeb sab hauv tsev. Qhov chaw hluav taws xob hauv tsev no zoo dua thiab qhov cuam tshuam ntawm cov nthwv dej me me. Qhov thib ob, lub sijhawm ntawm kev siv yog qhov me me-voltage thiab me me tam sim no. Tsis yog-kev cais tawm tsis muaj txiaj ntsig rau cov hluav taws xob tsis tshua muaj hluav taws xob, vim tias qhov ua tau zoo ntawm cov hluav taws xob tsawg thiab cov hluav taws xob loj tsis siab tshaj qhov kev sib cais, thiab tus nqi tsawg dua. Thib peb, cov khoom siv hluav taws xob tsis sib cais yog siv nyob rau hauv ib puag ncig ruaj khov. Tau kawg, yog tias muaj ib txoj hauv kev los daws qhov teeb meem ntawm kev tawm tsam qhov nce siab, daim ntawv thov ntau yam tsis muaj kev sib cais lub zog yuav nthuav dav heev!
Vim yog qhov teeb meem ntawm nthwv dej, qhov kev puas tsuaj yuav tsum tsis txhob kwv yees. Feem ntau, hom kev kho rov qab, kev pov hwm kev puas tsuaj, nti, thiab MOS thawj zaug yuav tsum xav txog qhov teeb meem ntawm nthwv dej. Txhawm rau txo qhov kev puas tsuaj, nws yog ib qho tsim nyog yuav tsum xav txog qhov nce siab thaum tsim, lossis txiav tawm cov neeg siv thaum siv, thiab sim ua kom tsis txhob muaj kev nce siab. (xws li cov teeb hauv tsev, tua nws rau lub sijhawm thaum koj sib ntaus)
Hauv cov ntsiab lus, kev siv kev sib cais thiab kev tsis sib cais feem ntau yog vim muaj qhov teeb meem ntawm yoj surge, thiab qhov teeb meem ntawm nthwv dej thiab hluav taws xob ib puag ncig zoo sib xws. Yog li ntawd, ntau zaus ntawm kev siv hluav taws xob cais tawm thiab cov khoom siv hluav taws xob tsis sib cais tsis tuaj yeem txiav ib qho los ntawm ib qho. Cov nqi siv tau zoo heev, yog li nws yog qhov tsim nyog los xaiv qhov tsis yog-kev sib cais lossis kev sib cais raws li LED-tsav fais fab mov.
5. Cov ntsiab lus
Kab lus no qhia txog qhov sib txawv ntawm kev sib cais thiab lub zog tsis nyob ib leeg, nrog rau lawv qhov zoo thiab qhov tsis zoo, lub sijhawm hloov kho, thiab kev xaiv ntawm kev xaiv lub zog cais. Kuv vam tias cov engineers tuaj yeem siv qhov no ua ib qho kev siv hauv cov khoom tsim. Thiab tom qab cov khoom lag luam tsis ua tiav, sai sai tso qhov teeb meem.
Lub sij hawm xa tuaj: Plaub Hlis-08-2023
