BMS Kev Tiv Thaiv Overvoltage Cuav: Vim Li Cas Nws Ua Rau Thaum Ntxov thiab Yuav Kho Nws Li Cas
Lub BMS muaj kev tiv thaiv overvoltage tripped. Tab sis thaum koj xyuas lub pob hluav taws xob - lossis txawm tias qhov nruab nrab ntawm lub xov tooj hluav taws xob - nws nyeem3.45Vib lub cell, qis dua qhov3.65VQhov ntsuas hluav taws xob ntau dhau rau LiFePO4. BMS zoo li ua rau tsis raug.
Yuav luag muaj tseeb tiag, nws tsis yog. Lub BMS teb rau qhov xwm txheej tiag tiag - tsuas yog tsis yog qhov koj tab tom kuaj xyuas. Kev nkag siab txog qhov BMS saib xyuas tiag tiag qhia koj tam sim ntawd tias yuav tsum nrhiav dab tsi.
Cov BMS Saib Xyuas Dab Tsi: Lub Hwj Chim Ib Lub Cell, Tsis Yog Qhov Nruab Nrab
BMS kev tiv thaiv over-voltage teb raulub zog hluav taws xob ntawm tus kheej, tsis yog rau qhov nruab nrab ntawm lub zog hluav taws xob lossis tag nrho lub zog hluav taws xob faib los ntawm suav cov cell.
Yog tias lub pob 16S LiFePO4 muaj qhov nruab nrab ntawm3.45Vib lub cell (tag nrho55.2V), tab sis ib lub cell nyob ntawm3.66Vthaum lwm tus nruab nrab3.44V, BMS yuav tiv thaiv qhov hluav taws xob ntau dhau ntawm lub cell ntawd. Los ntawm sab nraud, lub zog hluav taws xob zoo li zoo. BMS ua haujlwm kom raug - nws pom qhov xwm txheej hluav taws xob ntau dhau ntawm lub cell siab tshaj plaws.
BMS mus ncig OVP ntawm lub xov tooj no- txawm tias qhov nruab nrab ntawm pob khoom zoo
Qhov no yog qhov ua rau muaj qhov zoo li "cuav" over-voltage trip. Nws tsis yog cuav. Nws yog qhov over-voltage tiag tiag ntawm lub cell tiag tiag uas tab tom nce siab dua nws cov neeg zej zog.
Plaub Qhov Ua Rau — Txheeb Xyuas Los Ntawm Tus Qauv
| Ua rau | Thaum nws mus ncig | Qhov uas lub app qhia | Kho |
|---|---|---|---|
| Kev tsis sib npaug ntawm cov hlwb | Yuav luag tas lub roj teeb; ib lub cell nyob tom ntej | Ib lub cell siab; lwm lub qis dua | Kev sib npaug nquag; lub voj voog sib npaug tag nrho |
| Lub charger voltage siab dhau lawm | Txhua lub sijhawm them nqi thaum kawg | Ntau lub hlwb siab uas yuav nce mus txog OVP | Txo qhov hluav taws xob ntawm lub charger kom tsawg dua rau cov lus qhia ntawm pob khoom |
| Qhov txwv OVP qis dhau lawm | Ua haujlwm sai dua li qhov xav tau | Cov cell qis dua 3.65V, tab sis tua hluav taws | Tshawb xyuas thiab kho qhov BMS qhov ntsuas |
| Kev tiv thaiv kub tsis raug teeb tsa | Nyob rau hauv kub ib puag ncig nyob rau hauv them | Qhov kub ntawm pob khoom nce siab; OVP hluav taws ua ntej tiv thaiv qhov kub | Txheeb xyuas qhov ntsuas kub tiv thaiv |
Ua rau 1: Kev tsis sib npaug ntawm cov hlwb (Feem ntau)
Thaum cov cell laus zuj zus thiab rov ua dua, qhov sib txawv me me ntawm qhov tsis kam sab hauv ua rau lawv sib nrug thaum lub sijhawm them. Lub cell uas muaj qhov tsis kam qis tshaj plaws them sai tshaj plaws thiab mus txog qhov over-voltage threshold ua ntej lwm tus. Thaum lub cell ntawd ntaus3.65V, BMS mus ncig - txawm tias feem ntau ntawm cov neeg caij tsheb nyob ntawm3.44Vthiab tuaj yeem lees txais ntau tus nqi.
Yuav ua li cas thiaj paub tseeb
Qhib lub DALY BMS app thaum lub sijhawm them thiab saib xyuas cov hluav taws xob ntawm ib lub cell. Yog tias ib lub cell nce sai dua li lwm lub - rub mus tom ntej los ntawm 50–100mV ua ntej lwm lub sib npaug.3.50V- qhov tsis sib npaug yog qhov ua rau.
Yuav kho li cas
Yog tias tsis sib npaug me ntsis (ib lub cell siab dua lwm lub cell 30–50mV): khiav lub sijhawm them qeeb qeeb ntawm 0.1C thiab cia lub pob txuas nrog tom qab lub charger txiav tawm. Qhov no muab lub sijhawm rau lub voj voog sib npaug passive los tshem tawm lub cell siab ntawm qhov them siab tshaj plaws.
Rau qhov tsis sib npaug uas rov qab los sai sai tom qab txhua zaus sim sib npaug: Smart BMS nrog kev sib npaug nquag yog qhov kev daws teeb meem tsim nyog. Kev sib npaug nquag ua haujlwm thoob plaws hauv lub voj voog them (tsis yog tsuas yog thaum them siab tshaj plaws), txuas ntxiv faib cov nqi ntawm cov cell kom cov cell siab tsis sib tw ua ntej thaum xub thawj.
Ua rau 2: Lub Charger Voltage Siab Dhau
Yog tias qhov hluav taws xob tso tawm ntawm lub charger tshaj qhov hluav taws xob them siab tshaj plaws ntawm lub pob (cells × OVP threshold), kev them yuav tsav cov cells siab dua qhov OVP threshold ntawm txhua qhov kev sib tham.
Yuav ua li cas thiaj paub tseeb
Siv lub voltmeter los ntsuas qhov hluav taws xob ntawm lub charger. Rau lub pob 16S LiFePO4, qhov hluav taws xob ntawm lub charger yuav tsum tsis pub tshaj16 × 3.65V = 58.4VLub charger ntsuas ntawm 60V ntawm lub pob 16S yuav ua rau OVP mus rau qhov qub ntawm txhua lub voj voog them.
Yuav kho li cas
Kho qhov hluav taws xob ntawm lub charger kom phim cov lus qhia ntawm lub pob, lossis hloov lub charger nrog ib qho uas tau ntsuas kom raug rau lub pob. Rau LiFePO4, qhov hluav taws xob them siab tshaj plaws feem ntau yog3.65Vib lub cell - piv txwv li58.4Vrau 16S,29.2Vrau 8S,14.6Vrau 4S.
Ua rau 3: OVP Threshold Teem Qis Dhau
Yog tias BMS tau teeb tsa ua ntej nrog qhov kev tiv thaiv over-voltage threshold - piv txwv li,3.55Ves tsis txhob3.65Vrau LiFePO4 - kev them nyiaj ib txwm yuav tiv thaiv kev tawg ua ntej cov cell puv.
Yuav ua li cas thiaj paub tseeb
Tshawb xyuas cov chaw teeb tsa BMS hauv DALY app lossis PC software sab saud. Mus rau qhov chaw teeb tsa kev tiv thaiv thiab txheeb xyuas qhov over-voltage protection threshold raws li koj cov lus qhia txog chemistry ntawm lub cell.
Yuav kho li cas
Kho qhov OVP threshold kom phim koj lub cell chaw tsim khoom cov lus qhia rau qhov siab tshaj plaws them voltage. Rau cov cell LiFePO4 txheem,3.65Vib lub cell yog qhov siab tshaj plaws ntawm kev lag luam.Tsis txhob teeb tsa siab dua li qhov kev qhia tshwj xeeb ntawm lub cell— tshaj qhov siab tshaj plaws ntawm lub cell qhov hluav taws xob ua rau muaj kev puas tsuaj sai dua thiab, thaum muaj xwm txheej hnyav, muaj kev pheej hmoo ntawm kev nyab xeeb.
Ua rau 4: Kev Tiv Thaiv Kub Tsis Tau Teeb tsa Zoo
Hauv qhov chaw kub - qhov chaw kaw tsis muaj cua nkag, lub caij ntuj sov, lossis lub zog tawm mus rau hauv lub voj voog them - lub pob yuav tsum tau tiv thaiv los ntawm BMS'skubkev txwv kev tiv thaiv ua ntej OVP dhau los ua qhov kev tiv thaiv tseem ceeb. Yog tias koj pom OVP ua haujlwm thaum muaj kub thaum tsis tau tiv thaiv qhov kub thiab txias, qhov ntsuas kub yuav raug teeb tsa tsis raug lossis raug kaw.
Yuav ua li cas thiaj paub tseeb
Thaum lub sijhawm them roj teeb OVP mus ncig, xyuas seb qhov kub thiab txias ntawm lub roj teeb BMS nyob qhov twg. Yog tias qhov kub ntawm lub roj teeb nyob ze lossis siab dua qhov kub uas lub tuam txhab tsim roj teeb pom zoo (feem ntau qis dua 45°C rau LiFePO4), qhov kev tiv thaiv kub yuav tsum ua haujlwm - tsis yog OVP. Xyuas kom tseeb tias qhov kub thiab txias tiv thaiv tau qhib thiab teeb tsa raws li qhov kev qhia ntawm lub tuam txhab tsim roj teeb.
Yuav kho li cas
Teeb tsa qhov kev tiv thaiv them kub siab kom koom ua ntej cov cell mus txog qhov kub tsis zoo. Txhim kho qhov cua nkag ntawm lub thawv. Tsis txhob txo qhov OVP threshold kom them rau cov teeb meem thermal - uas npog qhov teeb meem tiag tiag (kub) thiab ua rau lub pob raug kev ntxhov siab thermal.
Yuav ua li cas rov pib dua tom qab OVP Trips
Kev tiv thaiv over-voltage yuav tshem tawm thaum lub zog ntawm lub cell triggering poob qis dua qhov OVP recovery threshold (tus nqi teeb tsa qis dua OVP trip point). Qhov no feem ntau tshwm sim thaum:
Lub charger raug txiav tawm— lub zog hluav taws xob ntawm lub cell poob qis thaum lub zog ntawm qhov chaw ploj mus.
Ib qho load tau txuas nrog luv luv— rub lub cell siab lub zog kom qis.
Lub voj voog sib npaug ntawm BMS hloov lossis ntws cov nqi tawm ntawm lub cell siab- lub zog txo qis.
Tsis txhob sim rov pib dua BMS manually lossis yuam kom nws txais ntau dua qhov them. Lub OVP muaj nyob rau hauv kev tiv thaiv lub cell siab los ntawm kev tsav tsheb siab tshaj nws qhov hluav taws xob siab tshaj plaws. Daws qhov ua rau hauv paus (kev tsis sib npaug, lub charger voltage, qhov chaw teeb tsa, lossis kub) ua ntej lub sijhawm them tom ntej.
Yuav ua li cas DALY Smart BMS pab kuaj qhov no
Kev kuaj mob OVP mus ncig kom raug yuav tsum pom qhov hluav taws xob ib lub cell thaum lub sijhawm mus ncig - lub peev xwm DALY Smart BMS tau tsim los.
LubDALY Smart BMSqhia cov hluav taws xob ntawm txhua lub cell hauv lub sijhawm tiag tiag. Thaum OVP ua haujlwm, lub app qhia tias lub cell twg ua rau nws - yog li qhov ua rau hauv paus (ib lub cell siab, txhua lub cell siab ua ke, lossis qhov kub tsis zoo) pom tam sim ntawd es tsis yog xav tom qab qhov tseeb.
Cov ntaub ntawv keeb kwm ntawm qhov xwm txheej sau cov cell uas ua rau muaj teeb meem thiab cov xwm txheej ntawm txhua qhov xwm txheej OVP, yog li koj tuaj yeem qhia tau seb tib lub cell puas ua rau muaj teeb meem tas li (qhia tias tsis sib npaug tas li) lossis seb ntau lub cell puas ncav cuag OVP ua ke (qhia tias muaj teeb meem charger lossis threshold).
Rau cov pob khoom uas muaj kev txav mus los tas li,Cov Khoom Siv Sib Npaug Seriesmus ib kauj ruam ntxiv: es tsis txhob siv cov nqi los ntawm cov cell siab dhau los ntawm cov resistors, nws hloov cov nqi ntawm cov cell thoob plaws hauv lub voj voog them tag nrho, ua kom lub pob sib dhos ua ntej txhua lub cell sib tw mus rau OVP.
Cov Lus Nug Feem Ntau
Lub BMS app qhia lub pob hluav taws xob ntawm 56V ntawm 16S pob - qhov ntawd yog 3.5V ib lub cell nruab nrab. Vim li cas OVP thiaj tripping?
Qhov txwv ntawm OVP siv raulub zog hluav taws xob ntawm tus kheej, tsis yog qhov nruab nrab ntawm pob. Yog tias ib lub cell nyob ntawm3.66Vthaum lwm tus nruab nrab3.48V, OVP yuav mus rau ntawm lub cell ntawd txawm tias qhov nruab nrab ntawm lub pob zoo li zoo. Qhib qhov pom ntawm qhov hluav taws xob ib-cell hauv lub app - lub cell siab yuav pom tseeb dua lwm tus. Xa koj qhov kev teeb tsa pob (qhov hluav taws xob ntawm lub cev, suav lub cell, muaj peev xwm) rau peb pab neeg thiab peb tuaj yeem pab txheeb xyuas seb koj lub BMS tam sim no puas muab kev pom ntawm ib-cell ntawm qhov tob uas koj xav tau.
Kuv tau kho qhov OVP threshold kom siab dua kom tsis txhob muaj kev mus ncig. Qhov ntawd puas muaj kev nyab xeeb?
Kev kho qhov txwv kom phim qhov siab tshaj plaws ntawm koj lub cell yog qhov muaj kev nyab xeeb (rau tus qauv LiFePO4, qhov no yog3.65Vib lub cell). Kho nwssaum toj noCov lus qhia tshwj xeeb ntawm lub cell kom tsis txhob muaj kev mus ncig uas qhia txog qhov teeb meem tiag tiag tsis yog - nws tso cai rau cov cell kom tsav siab tshaj lawv qhov hluav taws xob siab tshaj plaws, ua kom kev puas tsuaj sai dua thiab, hauv cov xwm txheej hnyav, tsim kev pheej hmoo kev nyab xeeb. Kho qhov ua rau muaj kev mus ncig es tsis txhob tsa qhov txwv dhau qhov kev qhia tshwj xeeb ntawm lub cell.
Lub cell qub yeej ib txwm ua rau OVP ua ntej. Puas yuav tsum tau hloov nws?
Tsis tas li ntawd xwb. Lub cell uas pheej mus txog OVP ua ntej thaum lub sijhawm them yog lub cell uas muaj qhov tsis kam sab hauv qis tshaj plaws, muaj peev xwm tsawg tshaj plaws uas tseem tshuav, lossis ob qho tib si - nws tsuas yog puv ua ntej xwb.Lub cell uas yuav tsum tau hloov yog lub uas ncav cuag qis-voltage ua ntejthaum lub sijhawm tawm mus(muaj peev xwm tsawg lossis tiv taus siab thaum thauj khoom), tsis yog qhov uas them sai tshaj plaws. Txhawm rau kom paub qhov txawv ntawm cov no, xyuas ob qho kawg ntawm lub voj voog hauv BMS app: qhov them siab tshaj plaws rau OVP-thawj lub hlwb, qhov tso tawm hauv qab rau UVP-thawj lub hlwb. Kev sib npaug nquag ua rau lub pob sib phim tsis hais lub hlwb twg feem ntau puv ua ntej, ncua qhov xav tau hloov.
Kuv lub BMS muaj ob qho tib si passive thiab active balancing - qhov twg ua haujlwm?
Feem ntau cov khoom siv Smart BMS siv passive balancing - ib qho me me bleed tam sim no (feem ntau yog kaum txog pua pua mA) uas ua haujlwm thaum lub cell hla qhov sib npaug-pib qhov ntsuas ze rau saum toj ntawm tus nqi. Cov koob DALY Active Balancing siv kev hloov pauv them (feem ntau yog ntau-amp chav kawm) thiab ua haujlwm thoob plaws lub voj voog them, tsis yog tsuas yog ntawm sab saum toj. Rau qhov tsis sib npaug me me thiab cov ntawv thov them qeeb, passive txaus. Rau cov pob khoom uas qhia txog kev hloov pauv tas mus li ntawm cov kev sib tham, kev sib npaug nquag yog txoj hauv kev hloov kho tshiab. Xa koj lub pob khoom thiab cov ntaub ntawv siv rau peb kom tau txais kev pom zoo.
Cov Lus Qhia Tseem Ceeb: Qauv → Ua Rau → Kho
| Qauv | Ua rau | Kho |
|---|---|---|
| Ib lub cell yeej ib txwm ntaus OVP; lwm tus hauv qab | Kev tsis sib npaug ntawm lub cell - ib lub cell them sai dua | Kev sib npaug nquag lossis kev sib npaug qeeb qeeb |
| Txhua lub hlwb uas mus txog OVP ua ke | Lub charger voltage siab dhau lawm | Cov zis charger qis dua kom phim cov qauv pob |
| OVP ntawm qhov voltage uas zoo li qis dhau | Threshold teeb tsa tsis raug | Tshawb xyuas & kho qhov OVP threshold hauv BMS settings |
| OVP nyob rau hauv qhov chaw kub thaum lub sijhawm tiv thaiv kub tsis muaj suab nrov | Kev tiv thaiv kub tsis raug teeb tsa | Xyuas kom meej qhov ntsuas kub siab tiv thaiv kev them nqi |
Xav tau BMS uas qhia txog qhov ua rau muaj qhov teeb meem tiag tiag hauv vib nas this?
Xa plaub tus lej rau peb thiab peb yuav pom zoo kom siv DALY Smart BMS configuration uas zoo rau koj lub pob khoom - nrog rau kev pom tseeb ntawm ib lub cell thiab txoj kev sib npaug zoo rau koj tus qauv tsis sib npaug.
- Qhov hluav taws xob ntawm lub cev (12V / 24V / 48V / 72V lossis kev cai)
- Cov lej ntawm cov hlwb hauv series (S)
- Lub peev xwm nominal (Ah)
- Daim Ntawv Thov (hnub ci cia / EV / e-tsheb kauj vab / UPS / kev lag luam)
Tau Txais Kev Pom Zoo Txog Kev Teeb Tsa
Teb tsis pub dhau 24 teev · Pab pawg kws tsim khoom, tsis yog tsab ntawv muag khoom
Yog xav paub ntxiv txog cov teeb meem BMS, mus saib peb cov lus qhia ntawmyuav ua li cas thiaj kuaj tau qhov ua tsis tiav ntawm BMS kev sib txuas lusthiabKev sib npaug ntawm cov khoom siv nquag thiab passive rau LiFePO4 pob.
Cov Lus Cim Txog Kev Kho Mob Qhov Chaw
Qhov siab tshaj plaws ntawm lub zog hluav taws xob ntawm LFP cell ntawm 3.65V/cell tau sau tseg tas li thoob plaws kaum ib qhov chaw ywj pheej hauv web uas tau hais los saum toj no (refs 1–11) thiab phim cov lus qhia tseem ceeb ntawm CATL / EVE / CALB. Tus nqi no tau kho raws li tau txheeb xyuas tag nrho.
Cov lus piav qhia txog lub peev xwm sab hauv ntawm cov khoom (kev tso saib ib lub cell, cov ntaub ntawv keeb kwm, kev sib npaug ntawm tus cwj pwm) tau piav qhia zoo hauv tsab xov xwm es tsis yog nrog cov nqi lej tshwj xeeb (mV qhov tseeb, qhov nrawm dua, lub peev xwm cia khoom, kev sib npaug ntawm cov ntsuas tam sim no), tos kev lees paub txog kev tsim kho ntawm cov lus qhia ntawd.
Tshooj Cai 4 (Kub) tau txhob txwm ua los ntawm kev teeb tsa tsis raug ntawm qhov kub-kev tiv thaiv-qhov txwv tsis pub hloov pauv es tsis yog kev vam khom ncaj qha ntawm qhov hluav taws xob thiab qhov kub, vim tias cov ntaub ntawv LFP pej xeem tsis txhawb nqa kev sib raug zoo ntawm cov lej ntawm daim ntawv "kub nce X°C → cell voltage nce Y mV" nyob rau hauv cov xwm txheej them. Qhov kev teeb tsa xaiv ntawm no tiv thaiv cov neeg siv los ntawm kev kuaj mob tsis raug ntawm qhov teeb meem thermal ua qhov teeb meem voltage.
Lub sijhawm tshaj tawm: Tsib Hlis-09-2026
