Roj Teeb Tswj System: Kev Ua Haujlwm, Hom & Yuav Xaiv Li Cas

Lub lithium-Ion roj teeb pob yog ib qho khoom kim heev, lub zog- ntom ntom. Kho nws zoo thiab nws kav ib xyoo caum. Ua phem rau ob peb feeb thiab koj tuaj yeem ua rau cov hlwb mus tas li, lossis qhov phem tshaj plaws pib hluav taws. Cov tivthaiv uas tiv thaiv qhov xwm txheej phem tshaj plaws yog lub roj teeb tswj, lossis BMS.

Txawm hais tias koj tab tom tsim ib pob, sib koom ua ke rau hauv ib qho khoom, lossis ntsuas tus neeg muag khoom daim ntawv qhia tshwj xeeb, phau ntawv qhia no npog qhov BMS tiag tiag, dab tsi muaj nyob, vim li cas ib qho tiag tiag tsis yog - sib tham, thiab yuav ua li cas xaiv qhov zoo rau koj daim ntawv thov.
 

Ntawm nplooj ntawv no

• Lub Battery Management System yog dab tsi?
• Yuav ua li cas BMS ua haujlwm tiag tiag
• Core Functions ntawm BMS
• Main BMS Architectures
• BMS vs Protection Board (PCM)
• Vim li cas BMS tseem ceeb
• Xaiv txoj cai BMS los ntawm Daim Ntawv Thov
• Daim ntawv teev npe xaiv 7-kauj ruam
• Feem ntau yuam kev thaum yuav BMS
• FAQ

Lub Battery Management System yog dab tsi?

A roj teeb tswj systemyog lub tshuab hluav taws xob uas saib xyuas thiab tiv thaiv lub pob roj teeb rov qab, feem ntau yog lithium-ion lossis LiFePO4 pob ua los ntawm ntau lub hlwb hauv cov koob thiab sib npaug. Nws ntsuas seb txhua lub xovtooj ua li cas, xam seb lub pob yuav coj li cas rau tag nrho, thiab cuam tshuam thaum ib yam dab tsi tawm sab nraum qhov kev txwv.

BMS tsis zoo ib yam li lub rooj tsav xwm tiv thaiv yooj yim (qee zaus hu ua PCM, lossis Kev Tiv Thaiv Circuit Module). Lub rooj tsav xwm tiv thaiv ua rau muaj kev ua txhaum ntau dhau xws li overcharge, dhau - tawm, thiab luv luv. Lub BMS tiag tiag ua txhua yam ntawm qhov ntawd, thiab tseem sib npaug ntawm cov hlwb, kwv yees lub xeev tus nqi thiab lub xeev kev noj qab haus huv, tswj qhov kub thiab txias, thiab feem ntau sib txuas lus nrog lwm tus ntawm lub cev dhau CAN, RS485, UART, lossis Bluetooth. Qhov sib txawv tseem ceeb vim tias kev lag luam sib xyaw ob nqe lus dawb, thiab ntau cov "BMS" pheej yig yog cov thaiv kev tiv thaiv hauv kev zais.

Nyob rau hauv ib tug ua tiav lub zog cia khoom, BMS yog ib qho ntawm ob peb lub tsev thaiv. Yog tias koj xav pom yuav ua li cas nws zaum ib sab ntawm lub hlwb, PCS, EMS, thiab thermal hardware, peb qhov kev tawg ntawmyim core Cheebtsam ntawm lub roj teeb lub zog cia systemyog ib tug phooj ywg zoo nyeem.

Yuav ua li cas BMS ua haujlwm tiag tiag

Txhua BMS khiav tib yam plaub- kauj ruam voj, ntau txhiab zaus hauv ib ob.

Kev xav.Voltage kais ntawm txhua lub xov tooj ntawm tes, lub sensor tam sim no (shunt lossis Hall- cuam tshuam) ntawm txoj kev tseem ceeb tam sim no, thiab NTC thermistor ntawm cov ntsiab lus tseem ceeb pub cov ntaub ntawv nyoos rau hauv BMS.

xam.Lub microcontroller hloov cov kev ntsuas no rau hauv cov txiaj ntsig tau los: lub xeev ntawm tus nqi, lub xeev ntawm kev noj qab haus huv, muaj lub zog muaj zog, cell tsis txaus, qhov nruab nrab kub.

Txiav txim siab.Lub firmware sib piv txhua yam tiv thaiv kev nyab xeeb thiab cov cai khiav haujlwm.

Ua.Thaum xav tau, BMS qhib MOSFETs lossis contactors kom txiav tam sim no. Nws kuj tseem tuaj yeem ua rau lub ntsuas hluav taws xob sib npaug, hais kom lub charger kom qeeb, lossis tua tus chij txhaum rau lub party system.

Qhov kev tawm tswv yim kaw lub voj yog dab tsi cais lub roj teeb tswj hwm los ntawm lub roj teeb nrog lub nti tiv thaiv daig rau saum.
 

Lub luag haujlwm tseem ceeb ntawm lub roj teeb tswj qhov system

Cov qauv BMS sib txawv hais txog cov haujlwm sib txawv. Lub roj teeb uas muaj peev xwm tswj hwm qhov system ua haujlwm feem ntau lossis tag nrho cov hauv qab no.

Cell -Kev Saib Xyuas Qib

BMS tsis tu ncua nyeem qhov hluav taws xob ntawm txhua lub xov tooj ntawm tes hauv cov hlua, tam sim no ntws hauv thiab tawm ntawm pob, thiab kub ntawm ib lossis ntau lub ntsiab lus. Cell- theem pom kev yog qhov ua rau pob - theem kev txiav txim siab ntseeg tau. Qhov nruab nrab ntawm cov qib pob zais raws li hom tib yam - xov tooj ntawm tes uas ua rau tsis ua tiav.

Cell Balancing

Nyob rau hauv ib lub cell ntau- pob, cov hlwb muaj hnub nyoog txawv me ntsis. Tsis muaj qhov sib npaug, lub xov tooj tsis muaj zog tshaj plaws tau tsoo nws lub zog hluav taws xob sab saud ua ntej thaum them nyiaj, yuam BMS kom tsis txhob them tag nrho cov pob thiab tawm hauv lub peev xwm siv tau tso tseg.

Ob txoj hauv kev dominate.Passive ntsuashlawv tawm lub zog ntau dhau los ntawm cov hlwb siab dua los ntawm cov resistors me. Nws yog qhov yooj yim, pheej yig, thiab tsim nyog rau feem ntau cov neeg siv khoom thiab lub teeb - cov pob khoom lag luam.Active ntsuastxav lub zog los ntawm cov hlwb siab dua mus rau cov hlwb qis los ntawm cov khoom siv hluav taws xob, inductors, lossis DC -DC converters. Nws muaj txiaj ntsig zoo dua thiab rov qab siv tau ntau dua, tab sis nws ntxiv cov nqi thiab qhov nyuaj. Kev sib npaug zoo li yuav them rau hauv cov pob loj (EV traction, kab sib chaws- teev cia) qhov twg txhua kilowatt- teev tseem ceeb.

SOC, SOH, thiab SOF kwv yees

Peb lub xeev muaj txiaj ntsig zoo sib xws tab sis txhais tau tias sib txawv.

• Lub Xeev Tus Nqi (SOC): tag nrho cov pob tam sim no, qhia li feem pua. Tsav qhov ntau lossis qhov ntsuas lub sijhawm uas tus neeg siv pom.
• Lub Xeev Kev Noj Qab Haus Huv (SOH): Lub peev xwm siv tau npaum li cas tseem tshuav piv rau lub hom phiaj - pob tshiab. Ib pob ntawm 80% SOH tau poob 20% ntawm nws lub peev xwm qub.
• Lub Xeev Kev Ua Haujlwm (SOF): seb lub pob tuaj yeem xa lub zog xav tau tam sim no, muab SOC tam sim no, SOH, thiab kub.

Cheap units qhia SOC. Cov units zoo dua taug qab SOH. Cov chav hwm tshwj xeeb tshaj tawm SOF, uas yog qhov koj xav tau tiag tiag thaum kev ua tau zoo ntawm cov kab. Rau kev qhia txog yuav ua li cas cov hlwb nce thiab poob peev xwm dhau lawv lub neej, lubRoj teeb University tsab xov xwm BU-808yog ib qho yooj yim zoo - hom lus.

Kev tiv thaiv

BMS hnyav tiv thaiv kev tshaj tawm, tshaj - tso tawm, overcurrent (hauv ob qho tib si), luv Circuit Court, thiab kub lossis qis. Txhua qhov pib yuav tsum tau teeb tsa, thiab lub sijhawm teb tseem ceeb npaum li qhov pib nws tus kheej. Luv-cov lus teb hauv Circuit Court feem ntau yog nyob rau hauv 100–500 microsecond range; ib yam dab tsi hauv millisecond range qeeb dhau rau siab - daim ntawv thov tam sim no.

Thermal Management

Rau cov pob khoom txias txias BMS tsuas yog derates lossis txiav tawm thaum qhov kub tsis txias. Rau cov pob khoom txias txias nws hais kom cov kiv cua, twj, lossis cov cua sov kom cov hlwb hauv lawv lub qhov rais ua haujlwm. Feem ntau cov lithium- ion hlwb them kev nyab xeeb ntawm kwv yees li 0-45℃thiab tso tawm ntau dua, tab sis lawv zoo siab tshaj plaws hauv 15-35℃band; lub voj voog lub neej poob rau ntawm ob qho tag nrho. Rau cov kev txwv tshwj xeeb, peb siv rauLithium roj teeb kub ntau yamnpog dab tsi them, tso tawm, thiab khaws cia zoo li hauv kev xyaum. Nyob rau sab hardware,xaiv ntawm huab cua thiab kua txiasdaim duab ntau npaum li cas ua haujlwm BMS yuav tsum tau ua thermally.

Kev sib txuas lus

Feem ntau niaj hnub BMSs tham nrog lub ntiaj teb sab nraud. CAN tsheb npav yog tus qauv rau cov tsheb thiab cov tshuab kev lag luam, RS485 dominates nyob ruaj ruaj zog cia, UART los yog I²C yog muaj nyob rau hauv me me cov neeg siv packs, thiab Bluetooth yog nce ntau nyob rau hauv e-bikes thiab portable zog. Nyob rau hauv ib qho chaw ruaj khov, BMS kuj koom tes nrog qib siab dua -Kev tswj hwm hluav taws xob (EMS), uas tuav cov kev txiav txim xa tawm, tariffs, thiab daim phiaj teeb liab. Ob leeg feem ntau tsis meej pem tab sis lawv zaum ntawm ntau txheej.

Data Logging thiab Diagnostics

Siab dua - kawg BMSs teev cov xwm txheej tsis raug, kev suav lub voj voog, thiab keeb kwm yav dhau los. Lub cav ntawd dhau los ua qhov muaj txiaj ntsig zoo rau kev kuaj xyuas cov khoom xa rov qab, lees paub qhov kev lees paub lees paub, thiab txhim kho cov khoom kho tom ntej. Hauv peb tus kheej RMA ua haujlwm, BMS cav feem ntau yog thawj qhov peb nyeem; ib pob uas tsis muaj keeb kwm siv tau yog pob uas koj tsis tuaj yeem tiv thaiv.

Hom Lub Npe ntawm BMS Architectures

Muaj peb qhov classical architectures rau lub roj teeb tswj system. Kev xaiv qhov yog feem ntau yog cov lus nug ntawm pob loj thiab qhov nyuaj.

Txoj cai ua haujlwm muaj txiaj ntsig peb siv thaum ntsuas kev tsim kho tshiab: hauv qab li 16 lub hlwb hauv cov koob, qhov nruab nrab yog qhov zoo. Nyob nruab nrab ntawm 16 thiab 100, modular feem ntau yeej ntawm tus nqi - ntawm - kev teeb tsa tiv thaiv kev ntseeg tau. Tshaj li 100 lub hlwb, faib them rau nws tus kheej hauv cov nqi cabling, teeb liab kev ncaj ncees, thiab kev ua haujlwm hauv cheeb tsam. Cov no yog cov ntsiab lus pib, tsis yog txoj cai; tej yaam num tshwj xeeb tuaj yeem rub ob txoj kev.
 

BMS vs Protection Board (PCM): Qhov txawv yog dab tsi?

Qhov no yog tib qhov loj tshaj ntawm kev tsis meej pem hauv kev lag luam BMS.

Yog tias tus neeg muag khoom hu rau $ 5 lub rooj tsavxwm rau lub pob 10-cell ib "BMS," nug seb nws puas ua haujlwm ntawm tes, ceeb toom SOC hla lub tsheb npav, thiab teev tus lej microcontroller tiag tiag. Yog tias cov lus teb tsis yog, nws yog lub rooj tsav xwm tiv thaiv.

Vim li cas BMS Qhov Tseem Ceeb: Qhov Risks tiag tiag ntawm Kev Mus Tsis Muaj Ib Tug

Lo lus "tseem ceeb" tau siv xoob. Ntawm no yog qhov ua tsis ncaj ncees lawm hauv pob lithium uas tsis muaj kev tswj hwm roj teeb zoo, lossis nrog ib qho uas tsis zoo rau txoj haujlwm.

Kev nyab xeeb.Lithium- ion hlwb tsis ua haujlwm los ntawm cov tshuaj tiv thaiv kab mob hu ua thermal runaway. Ib qho luv luv lossis overcharge nce ib lub xovtooj ntawm qhov kub, uas ua rau lub cev tsis ua haujlwm, uas ua rau qhov kub thiab txias ntxiv, kom txog rau thaum lub cell vents flammable electrolyte. Ib qho BMS uas ntes cov neeg ua ntej (qhov tsis zoo ntawm qhov hluav taws xob, qhov txawv txav tam sim no, qhov txawv txav tsis zoo) tuaj yeem cuam tshuam cov saw hlau ua ntej nws yuav hluav taws.

Kev ua neej nyob.Txawm tias pheej tsis sib xws ntawm kaum tawm millivolts ntawm cov hlwb ua rau lub neej luv luv. Lub xovtooj muaj zog tshaj plaws ua tiav kev them nyiaj ua ntej thiab tau txais kev voj voog hla ib txoj hlua nqaim; lub cev tsis muaj zog ua qhov hnyav nqa thiab muaj hnub nyoog sai dua. Tsis muaj qhov sib npaug, lub pob khoom siv tau qis qis asymmetrically nyob rau lub hlis ntau dua li xyoo. Hauv cov pob khoom peb tau qhib tom qab lav rov qab, qhov sib npaug ntawm qhov sib npaug uas tsis tau koom nrog yog ib qho ntawm cov hauv paus feem ntau ua rau lub peev xwm poob ntxov.

Kev ua tau zoo.Yog tsis muaj qhov tseeb SOC thiab SOH, lub kaw lus tsis siv lub pob (muaj peev xwm sab laug ntawm lub rooj) lossis siv nws ntau dhau (ntau lossis runtime thov uas tsis phim qhov tseeb). Rau cov neeg siv kawg, "Kuv lub roj teeb tuag sai dua li qhov qhia tau hais tias" yuav luag txhua qhov teeb meem BMS, tsis yog teeb meem ntawm tes.

Ua raws.Cov khoom siv roj teeb lithium niaj hnub no tau rub mus rau hauv ib pawg ntawm cov qauv, thiab BMS tiag tiag yog qhov ua rau lawv dhau mus. Hla ib qho zoo kaw tawm kev lag luam loj. Cov feem ntau yuav tsum paub:

• UN 38.3: ib qho kev thauj mus los-kev kuaj kev nyab xeeb uas cov lithium hlwb thiab pob khoom yuav tsum dhau mus kom xa los ntawm huab cua, hiav txwv, lossis txoj kev. Txhais los ntawmUN Manual of Tests and Criteria.
• TIAB SA 2271: npog cov roj teeb rau lub teeb hluav taws xob xws li e-bikes thiab e-scooters.
• UAS 1973: npog cov roj teeb uas nyob ruaj ruaj thiab lub zog, nrog rau feem ntau cov khoom ESS. Yuav tsum tau sau tseg BMS kev tiv thaiv logic.
• IEC 62619: Ua: Thoob ntiaj teb kev nyab xeeb tus qauv rau kev lag luam lithium ob lub hlwb thiab cov roj teeb.
• ISO 26262 Kev Tswj Xyuas Kev Lag Luam: kev nyab xeeb kev nyab xeeb rau kev tsheb. Yuav tsum tau qhov twg OEM qhia nws rau traction roj teeb.

Yog xav paub ntxiv txog dab tsi UL ntawv pov thawj muaj nyob rau ntawm ESS sab, saib peb daim ntawv ntawmvim li cas BESS cov khoom xav tau UL ntawv pov thawj. Koj tseem tuaj yeem xauj cov qauv lawv tus kheej los ntawmUL Solutions.

Xaiv txoj cai BMS los ntawm Daim Ntawv Thov

Cov ntawv thov sib txawv nyuaj rau kev tswj hwm roj teeb hauv txoj kev sib txawv kiag li. Tib daim ntawv lo "100A" txhais tau tias muaj ntau yam sib txawv hauv cov cuab yeej hluav taws xob thiab hauv lub hnub ci cia khib.

Hluav taws xob tsheb thiab E-Mobility

EVs thiab e- tsheb kauj vab xav tau qhov tam sim no tsis tu ncua, cov lus teb ceev ceev, SOC raug rau ntau qhov kev kwv yees, CAN kev sib txuas lus, thiab (qhov twg OEM xav tau) ISO 26262 ua haujlwm tau zoo - tsim kev nyab xeeb. Modular lossis faib architectures dominate ntawm qhov kawg siab dua.

Energy Storage Systems (ESS)

Qhov chaw khaws cia tseem ceeb tseem ceeb rau lub neej ntev ntawm daim ntawv qhia hnub, suav nrog lub voj voog siab, qhov tseeb SOH taug qab, thiab kev sib koom ua ke huv si nrog inverters dhau Modbus lossis CAN. Cells feem ntau yog LiFePO4 rau kev nyab xeeb. Qhov rai qhov hluav taws xob dav (48V txog 800V +) thawb cov qauv mus rau modular lossis faib BMSs. Feem ntau ntawm pebcontainerized BESStej yaam num, piv txwv li, siv tus tswv modular- qhev BMS kom ib lub khib tuaj yeem muab kev pabcuam yam tsis tau siv tag nrho lub xaib offline.

Cov cuab yeej fais fab

Cov cuab yeej fais fab mob siab txog qhov siab tshaj tam sim no thiab luv luv - cov lus teb hauv Circuit Court saum toj kawg nkaus. Lub cev muaj zog rub cov tam sim no loj loj ntawm kev pib thiab ntawm qhov chaw nres tsheb. Ntawm no, BMS kev ua tau zoo los rau MOSFET xaiv (Rds qis (ntawm)) thiab lub peev xwm los caij luv luv peaks yam tsis muaj kev cuam tshuam.

Portable thiab Consumer Electronics

Compact me me, tus nqi qis, thiab kev sib koom ua ke yog qhov tseem ceeb tshaj plaws. Ib qho me me hauv nruab nrab BMS nrog passive ntsuas thiab kev tiv thaiv yooj yim feem ntau txaus.

Marine thiab Pib Fais Fab Systems

Cranking- cov ntawv thov style xav tau qhov siab tshaj tawm tam sim no rau qhov tawg luv luv, ntxiv rau kev tiv thaiv kev co, av noo, thiab ntsev. Saib rau cov qauv tsim, siab ncov - mus rau - qhov sib piv tsis tu ncua tam sim no, thiab kev tiv thaiv thermal.

Kev xaiv Chemistry tseem tsav BMS teeb tsa. Peb lub ntsiab lus ntawmntau hom roj teeb rau lub zog ciataug kev los ntawm LFP, NMC, thiab lwm tus coj li cas, uas nyob rau hauv lem hloov voltage thresholds, ntsuas lub tswv yim, thiab thermal txwv BMS yuav tsum tau tswj.

Yuav Ua Li Cas Xaiv BMS

Siv qhov no hauv kev txiav txim. Hla ib kauj ruam yog li cas BMS feem ntau kev yuav khoom tsis raug.

1. Txheeb xyuas cov xov tooj ntawm tes thiab chemistry.Muaj pes tsawg lub hlwb hauv series (tus lej "S")? Lithium-ion (3.7V nominal), LiFePO4 (3.2V nominal), lossis lwm yam? BMS yuav tsum ua raws nraim.
2. Xam cov nruam thiab peak tam sim no.Siv qhov phem tshaj - rooj plaub. Nruam tam sim no teeb meem rau thermal sizing; ncov tam sim no tseem ceeb rau MOSFET thiab taug qab xaiv.
3. Xaiv qhov tam sim no txuas nrog cov npoo.Npaj kom tsawg kawg yog 25-30% headroom tshaj koj qhov kev thauj khoom tsis tu ncua tiag tiag (ib pob khoom sib xws - txoj cai ntawm tus ntiv tes xoo, tsis yog tus lej nyuaj). BMS ntsuas raws nraim ntawm koj qhov kev khiav hauj lwm tam sim no yuav khiav kub thiab hnub nyoog ceev.
4. Tshawb xyuas cov txheej txheem tiv thaiv.Overcharge, tshaj- tso tawm, overcurrent (them nqi thiab tawm), luv luv Circuit Court, thiab kub yuav tsum yog tam sim no thiab configurable.
5. Xaiv hom ntsuas ntsuas.Passive yog qhov zoo rau feem ntau pob khoom qis dua 10 kWh. Xaiv qhov sib npaug tsuas yog thaum muaj peev xwm rov qab los thiab lub neej ntev ua kom pom tseeb tus nqi ntxiv.
6. Sib piv cov kev sib txuas lus interface.CAN rau tsheb, RS485 rau ESS, BLE rau portable, los yog tsis muaj rau ib tug standalone hwj chim pob.
7. Tshawb xyuas MOSFETs thiab tsim kom zoo.Nug tus lej MOSFET thiab saib nws cov ntaub ntawv. Ib lub npe-brand MOSFET nrog qis Rds(on) yog ib qho ntawm cov cim muaj zog tshaj plaws ntawm BMS loj.

Feem ntau yuam kev thiab chij liab thaum yuav BMS

• Tso siab rau qhov kev ntaus nqi tam sim no.Lub rooj tsavxwm uas sau tias "100A" tuaj yeem siv MOSFETs uas derate rau 60A raws li cov cua sov tiag tiag. Xyuas cov ntaub ntawv.
• Tsis meej pem ncov nrog nruam.BMS uas tuav 200A rau ib pliag tsis yog 200A BMS.
• Tsis quav ntsej tus txheej txheem.Lub hwj chim muaj npe- pob khoom (Dewalt, Milwaukee, thiab lwm yam) feem ntau siv tuav tes tuav; ib tug generic BMS tej zaum yuav tsuas tsis kam lub hwj chim lub cuab tam.
• Hla lub ntsuas kub sensors.Ib qho NTC rau tag nrho 20S pob tsis tuaj yeem qhia koj yog tias ib lub ces kaum yog overheating.
• Yuav ntawm tus nqi ib leeg.Qhov pheej yig tshaj "BMS" rau ntau- pob ntawm tes yog yuav luag txhua lub rooj tiv thaiv nrog kev lag luam saum toj kawg nkaus.

FAQ

Kuv tuaj yeem siv lithium roj teeb yam tsis muaj BMS?
Rau ib lub xovtooj ntawm qis tam sim no, technically yog. Rau ib qho ntau- pob lithium ntawm tes, thiab tshwj xeeb tshaj yog nyob qhov twg tib neeg nyob ze, tsis muaj. Qhov kev pheej hmoo ntawm thermal runaway, cell imbalance, thiab sai degradation ua rau BMS zoo yuav tsum tau.

Qhov txawv ntawm BMS thiab lub roj teeb charger yog dab tsi?
Lub charger thawb lub zog rau hauv pob. BMS txiav txim siab seb qhov ntawd puas nyab xeeb thiab qhia lub charger thaum twg yuav tsum nres. Ntau lub tshuab muaj ob qho tib si, ua haujlwm ua ke dhau lub tsheb npav sib txuas lus.

Puas yog BMS ncua roj teeb lub neej?
Yog, meaningful. Los ntawm kev tiv thaiv overcharge, tshaj - tso tawm, thiab kev tsis txaus ntawm tes, BMS muaj peev xwm tuaj yeem txuas ntxiv lub neej voj voog ntawm lithium pob piv rau kev khiav nws tsis muaj kev tiv thaiv. Qhov tseeb piv yog nyob ntawm chemistry, qhov tob ntawm qhov tso tawm, thiab qhov kub thiab txias.

Cell balancing ua tau dab tsi?
Nws khaws txhua lub xov tooj ntawm tes hauv cov hlua ntawm ze li tib lub xeev ntawm tus nqi kom lub pob tuaj yeem them tag nrho thiab tawm mus yam tsis muaj ib lub xovtooj ntaus nws qhov kev txwv ntxov ntxov.

SOC vs SOH: Dab tsi yog qhov txawv?
SOC qhia koj tias lub roj teeb puv li cas tam sim no. SOH qhia koj tias muaj peev xwm npaum li cas lub roj teeb tau poob dhau nws lub neej. Ib pob tuaj yeem nyob ntawm 100% SOC thiab tsuas yog 70% SOH yog tias nws laus.

Puas yog BMS thiab PCM tib yam?
Tsis yog. Ib lub PCM (kev tiv thaiv pawg thawj coj saib) tsuas yog cuam tshuam rau cov xwm txheej tsis raug. BMS ntxiv qhov sib npaug, kev kwv yees hauv xeev, kev sib txuas lus, thiab kev tswj xyuas thermal feem ntau.

Tam sim no kuv BMS yuav tsum txhawb nqa li cas?
Npaj kom tsawg kawg yog 25–30% siab dua koj qhov tiag- ntiaj teb tam sim no txuas ntxiv, nrog rau qhov siab tshaj plaws rau kev pib lossis cov xwm txheej hauv khw. Nco ntsoov xyuas qhov tseeb MOSFET specs, tsis yog kev ntaus nqi lag luam xwb.

Centralized, modular, lossis faib: Kuv xav tau qhov twg?
Cov pob me me (hauv qab li 16S): centralized. Cov pob nruab nrab thiab lub teeb EVs: modular. Loj EV lossis daim phiaj-scale: faib.

Kuv puas yuav tsum rov kho BMS rau lub pob roj teeb uas twb muaj lawm?
Rau ib pob khoom uas tau xa tuaj thaum xub thawj tsis muaj ib qho, cov lus teb nyob ntawm seb muaj dab tsi nyob hauv. Yog tias tsuas muaj lub rooj tsav xwm kev tiv thaiv yooj yim xwb, kev sib pauv hauv BMS tiag tiag tuaj yeem txuas ntxiv lub neej muaj txiaj ntsig thiab ntxiv kev saib xyuas, tab sis qhov kev rov ua dua tshiab yuav tsum ua kom zoo dua qub suav ntawm tes, chemistry, thiab txoj hauv kev tam sim no. Rau cov pob khoom twb tau xaim rau BMS uas ua tsis tiav, kev hloov pauv yog ncaj qha. Rau cov ntim ntim OEM (tshwj xeeb tshaj yog los ntawm cov hom loj), retrofits feem ntau ua tsis tiav vim muaj kev sib koom tes ntawm cov pob thiab cov khoom siv tswv tsev, thiab peb feem ntau tsis pom zoo.

Kab hauv qab

Lub roj teeb tswj system yog dab tsi ua rau lithium{0}}ion roj teeb siv tau ntawm qhov ntsuas. Nws hnov, xam, thiab ua raws li lub hlwb ua, sib npaug rau lawv, taug qab lawv txoj kev noj qab haus huv, thiab hais lus rau lwm tus hauv lub cev. Hla BMS tiag tiag, lossis kev daws teeb meem rau pawg tiv thaiv hnav khaub ncaws ua ib qho, raug nqi rau koj ntawm kev nyab xeeb, kev ua neej nyob, thiab nyiaj txiag thaum kawg.

Ua ntej koj yuav, kaw plaub yam: cell suav thiab chemistry, nruam thiab ncov tam sim no nrog cov npoo, qhov kev tiv thaiv meej uas koj xav tau, thiab kev sib txuas lus sib txuas lus koj lub cev hais lus. Ua raws li cov qauv tsim nyog rau koj pob loj thiab koj yuav zam qhov yuam kev kim tshaj plaws hauv lithium roj teeb tsim.

Yog tias koj tab tom ntsuas BMS rau ib daim ntawv thov tshwj xeeb (EV traction, lub zog cia, cov cuab yeej hluav taws xob, kev pib hauv hiav txwv, lossis lub zog nqa tau), pib ntawm daim ntawv thov tam sim no thiab raws tu qauv thiab ua haujlwm rov qab. Qhov ntawd yog qhov txawv ntawm ib pob uas kav tsib xyoos thiab ib qho uas ua tsis tau hauv tsib lub hlis.