A LiFePO4 BMS (Lub Tshuab Tswj Xyuas Roj Teeb)yog lub rooj tsav xwm hluav taws xob uas saib xyuas, tiv thaiv, thiab sib npaug ntawm lub roj teeb lithium iron phosphate (LiFePO4). Nws nyob nruab nrab ntawm cov roj teeb thiab lwm qhov ntawm lub cev hluav taws xob, ntsuas qhov hluav taws xob, tam sim no, thiab kub kom txhua lub cell ua haujlwm hauv qhov chaw nyab xeeb.

Yog tsis muaj BMS, lub pob LiFePO4 tsis muaj kev tiv thaiv tiv thaiv kev them ntau dhau, kev tso tawm ntau dhau, luv luv, lossis lub cell tsis sib npaug - txhua yam uas tuaj yeem ua rau lub pob luv dua lossis, qhov phem tshaj plaws, tsim kev phom sij rau kev nyab xeeb. Qhov no yog vim li cas feem ntau ntawm cov pob LiFePO4 muag rau kev khaws cia hnub ci, EVs, kev siv hauv hiav txwv, RVs, lossis lub zog thaub qab xa nrog BMS tshwj xeeb es tsis txhob cia siab rau lub charger lossis inverter ib leeg.

Vim li cas LiFePO4 roj teeb xav tau BMS tshwj xeeb

Cov roj teeb LiFePO4 muaj qhov ruaj khov dua li lwm cov roj teeb lithium xws li NCM (nickel cobalt manganese) lossis NCA (nickel cobalt txhuas), uas yog qhov kev xaiv dav dav rau kev khaws cia thiab ntau daim ntawv thov kev txav mus los. Tab sis "ruaj khov dua" tsis tau txhais hais tias "tsis tas yuav tswj hwm." Lub pob LiFePO4 ntau lub hlwb tseem ntsib peb qhov teeb meem rov tshwm sim uas BMS tau tsim tshwj xeeb los daws:

• Kev hloov pauv ntawm lub zog ntawm lub cell.Txawm tias cov cell los ntawm tib pawg tsim khoom tsis laus ib yam. Dhau ntau pua lub voj voog, qhov sib txawv me me ntawm kev tsim khoom sib xyaw ua rau muaj qhov sib txawv ntawm cov hluav taws xob ntawm cov cell - qhov teeb meem sib npaug ntawm lub voj voog yog tsim los kho.
• Cov kab tawm tiaj tus.LiFePO4 muaj qhov nkhaus voltage tiaj tiaj thoob plaws feem ntau ntawm nws lub xeev them, uas ua rau nws nyuaj rau kwv yees lub peev xwm seem los ntawm voltage ib leeg. BMS nrog coulomb suav - taug qab qhov tseeb ntawm cov tam sim no ntws mus rau hauv thiab tawm ntawm lub pob dhau sijhawm, es tsis txhob kwv yees los ntawm voltage ib leeg - muab qhov tseeb dua ntawm lub xeev them.
• Lub qhov rais ua haujlwm nqaim thiab muaj kev nyab xeeb nyob rau qhov kawg.LiFePO4 cells zam txim rau nruab nrab ntawm lawv qhov kev them nqi tab sis tseem xav tau kev txiav tawm nyuaj thaum them tag nrho thiab tso tawm tob kom tsis txhob poob peev xwm mus sij hawm ntev.

LiFePO4 BMS tiv thaiv dab tsi tiag?

Ib qho BMS uas tau teev tseg kom raug rau cov roj teeb lithium ua haujlwm tiv thaiv hauv qab no:

1. Kev tiv thaiv overcharge— txiav kev them thaum twg lub cell twg mus txog nws qhov siab tshaj plaws voltage txwv
2. Kev tiv thaiv kev tshaj tawm ntau dhau— txiav cov khoom thauj ua ntej lub zog hluav taws xob poob qis txaus kom ua rau puas tsuaj mus tas li
3. Kev tiv thaiv overcurrent / luv luv-circuit— cuam tshuam lub voj voog yog tias tam sim no tshaj qhov ntsuas ntsuas
4. Kev tiv thaiv kub dhau— nres qhov them lossis tso tawm sab nraum lub qhov rais kub nyab xeeb
5. Kev sib npaug ntawm tes- sib npaug zog thoob plaws txhua lub cell hauv cov hlua series, txawm tias passively lossis actively

Kev Sib Npaug Ua Haujlwm vs. Kev Sib Npaug Ua Haujlwm hauv LiFePO4 BMS

Kev sib npaug tsis tu ncuaNws siv lub zog ntau dhau los ntawm cov cell uas muaj hluav taws xob ntau dua los ua cua sov los ntawm lub resistor kom txog thaum lub pob khoom seem puv. Nws yooj yim, pheej yig, thiab txaus rau cov pob khoom me me lossis cov ntawv thov uas tsis tshua muaj lub voj voog them.

Kev sib npaug nquaghloov lub zog los ntawm cov cell hluav taws xob siab dua mus rau cov cell hluav taws xob qis dua es tsis txhob yaj nws ua cua sov. Nws ua haujlwm tau zoo dua, tsim cov cua sov pov tseg tsawg dua, thiab feem ntau ua rau muaj kev sib npaug sai dua thiab kev noj qab haus huv ntawm lub pob mus sij hawm ntev zoo dua - uas tseem ceeb dua li qhov loj ntawm lub pob, suav cov cell, thiab kev nce zaus ntawm lub voj voog (cov pob ESS loj, kev khaws cia hnub ci txhua hnub, cov pob EV muaj peev xwm siab).

Rau cov pob khoom me me, lub voj voog tsawg, kev sib npaug tsis siv neeg feem ntau txaus. Rau cov kab ke LiFePO4 loj dua lossis muaj voj voog ntau, kev sib npaug nquag tsim nyog tus nqi ntxiv.

Yuav Ua Li Cas Xaiv LiFePO4 BMS Kom Yog

Thaum piv rau BMS rau cov roj teeb lithium, plaub qhov kev qhia tshwj xeeb txiav txim siab seb nws puas yuav haum rau koj lub cev:

1. Kev suav cov hlwb (S-count).Lub BMS yuav tsum phim koj lub pob khoom cov qauv sib xws - 4S BMS rau lub pob 12V, 8S rau 24V, 16S rau 48V, thiab lwm yam (raws li LiFePO4 lub ~ 3.2V nominal cell voltage). Qhov S-count tsis raug yog ib qho ntawm cov laj thawj feem ntau ntawm BMS tsis sib xws.
2. Kev ntsuas tam sim no tas mus li thiab qhov siab tshaj plaws.Loj BMS rau koj qhov kev rub tawm siab tshaj plaws, tsis yog tsuas yog kev rub tawm ib txwm muaj, thiab tawm hauv lub taub hau - BMS khiav ntawm nws lub qab nthab tam sim no tas li yuav khiav kub thiab laus dua.
3. Hom kev sib npaug thiab qhov sib npaug tam sim no.Raws li tau hais los saum toj no, txiav txim siab ntawm kev sib npaug passive lossis active raws li qhov loj ntawm pob thiab zaus ntawm kev voj voog, thiab xyuas qhov sib npaug tam sim no (mA) - qhov sib npaug tam sim no siab dua txhais tau tias kev sib npaug sai dua ntawm cov pob loj dua.
4. Cov txheej txheem sib txuas lus.Yog tias BMS xav tau tham nrog lub inverter, lub app saib xyuas, lossis lub tsheb lub CAN network, xyuas kom meej tias nws txhawb nqa cov protocol zoo - feem ntau yog RS485, CAN bus, UART, lossis Bluetooth - ua ntej yuav khoom, tsis yog tom qab kev teeb tsa.

LiFePO4 BMS los ntawm Voltage: 12V, 24V, thiab 48V/51.2V Systems

LiFePO4 BMS boards feem ntau yog teev los ntawm nominal system voltage, uas sib raug rau ib qho cell suav:

• 12V cov tshuab (4S):qhov kev teeb tsa feem ntau rau lub zog nqa tau, kev teeb tsa hnub ci me me, thiab kev hloov roj teeb uas poob rau hauv
• 24V cov tshuab (8S):feem ntau hauv marine, RV, thiab nruab nrab qhov loj me hnub ci daim ntawv thov
• 48V / 51.2V systems (16S):qhov chav kawm voltage feem ntau rau kev khaws cia hluav taws xob hauv tsev, kev teeb tsa hnub ci loj dua, thiab feem ntau cov ESS racks lag luam

Tus lej ntawm lub roj teeb yog los ntawm LiFePO4 lub ~3.2V nominal ib lub roj teeb - 4 × 3.2V ≈ 12.8V, 8 × 3.2V ≈ 25.6V, 16 × 3.2V ≈ 51.2V.

Feem ntau cov tshuab hluav taws xob siab dua xav tau kev saib xyuas ntau dua rau kev txhawb nqa cov txheej txheem kev sib txuas lus, vim tias lawv yuav raug txuas nrog lub inverter lossis lub kaw lus tswj hwm lub zog dav dua uas xav tau cov ntaub ntawv tiag tiag los ntawm BMS.

Cov Lus Nug Feem Ntau

Q1Puas yog lub roj teeb LiFePO4 xav tau BMS?

Yog. Txawm hais tias LiFePO4 chemistry ruaj khov dua li lwm cov lithium chemistry, lub pob ntau lub cell tseem xav tau BMS rau kev sib npaug ntawm lub cell, kev tiv thaiv overcharge / over-discharge, thiab kev taug qab qhov xwm txheej ntawm kev them nqi. Kev khiav lub pob LiFePO4 yam tsis muaj BMS tshem tawm tag nrho cov kev tiv thaiv no.

Q2Qhov txawv ntawm LiFePO4 BMS thiab lithium-ion BMS dav dav yog dab tsi?

Cov haujlwm tiv thaiv tseem ceeb zoo sib xws, tab sis qhov txiav tawm ntawm qhov hluav taws xob tau teeb tsa sib txawv rau txhua yam tshuaj lom neeg - LiFePO4 qhov hluav taws xob ib-cell qis dua NCM / NMC lossis NCA lithium-ion cells. BMS ua rau ib qho tshuaj lom neeg yuav tsum tsis txhob siv raws li nws yog rau lwm qhov yam tsis tau rov teeb tsa qhov hluav taws xob kom phim cov ntaub ntawv ntawm tes.

Q3Kuv xav tau amperage BMS dab tsi rau pob LiFePO4?

Txuas qhov ntsuas tam sim no tas mus li ntawm BMS rau qhov ntsuas tam sim no siab tshaj plaws ntawm koj lub cev muaj zog, thiab xaiv tus qauv uas muaj qhov ntsuas siab tshaj plaws / nce siab uas npog tau yooj yim rau lub sijhawm luv luv (lub cev muaj zog pib, inverter nce siab, thiab lwm yam) yam tsis muaj kev cuam tshuam.

Q4Kuv yuav ua li cas rov pib dua LiFePO4 BMS?

Feem ntau cov BMS units rov qab tau thaum qhov teeb meem ploj mus - piv txwv li, thaum lub zog rov qab mus rau qhov chaw nyab xeeb tom qab muaj kev them ntau dhau lossis kev tso tawm ntau dhau. Qee cov qauv kuj xav tau kev txuas rov qab ntawm lub qhov hluav taws xob lossis qhov chaw tso tawm, lossis kev txiav tawm / rov txuas dua ntawm lub pob, kom tshem tawm qhov txhaum latched. Ib txwm xyuas cov ntaub ntawv ntawm tus qauv BMS tshwj xeeb, vim tias tus cwj pwm rov pib dua txawv ntawm kev tsim.

Q5Ib lub BMS puas ua haujlwm nrog ntau lub lithium chemistry?

Qee cov qauv BMS tuaj yeem teeb tsa tau thoob plaws cov tshuaj lom neeg - LiFePO4, NCM, lossis LTO (lithium titanate) - ntawm qhov hloov kho qhov hluav taws xob, tab sis qhov no yuav tsum tau teeb tsa kom raug rau cov tshuaj lom neeg tshwj xeeb uas siv. BMS hard-wired rau ib qho tshuaj lom neeg qhov voltage ntau yam yuav tsum tsis txhob xav tias muaj kev nyab xeeb rau lwm tus yam tsis tau lees paub qhov kev teeb tsa ua ntej. Tsis yog txhua tus qauv ntawm kev ua lag luam txhawb nqa qhov no - xyuas cov ntaub ntawv tshwj xeeb ntawm BMS es tsis txhob xav tias muaj kev txhawb nqa ntau yam tshuaj lom neeg los ntawm lub neej ntawd.

Xaiv LiFePO4 BMS rau Koj Qhov Project

Tus BMS zoo nyob ntawm seb koj lub pob hluav taws xob muaj zog npaum li cas, suav cov cell, rub tam sim no, thiab nws xav tau kev sib txuas lus li cas nrog koj lub cev tas li. Qhia plaub yam no thiab pab pawg kws tshaj lij ntawm DALY tuaj yeem pom zoo rau kev teeb tsa sib phim: qhov voltage/cell suav (piv txwv li 12V/4S, 24V/8S, 48V/16S), cov kev xav tau tam sim no tas mus li thiab siab tshaj plaws, daim ntawv thov (hnub ci/ESS, marine, RV, EV, forklift, thiab lwm yam), thiab cov txheej txheem sib txuas lus uas xav tau (RS485, CAN bus, UART, Bluetooth).

• Email: dalybms@dalyelec.com
• Tshawb nrhiav los ntawm pawg: BMS ntse · Kev Ntsuas BMS · BMS rau Chaw Khaws Khoom Hauv Tsev · BMS Tam Sim No Siab · RV Lub Zog Cia BMS