Isho Ukuthini I-BMS?
Uhlelo Lokuphatha IbhethriKuchaza
Sicishe sathenga iqoqo lamayunithi e-DALY BMS ngo-2021. Inani lalibukeka lilihle, imininingwane ihlolwe ephepheni, futhi umthengisi wathembisa ukuhambisana kwebhasi le-CAN nama-inverter ethu e-Victron. Emavikini amathathu ngemva kokufakwa kundiza yendiza ye-AGV, sithole amayunithi amaseli abhalansile kuphela phakathi nokushajwa, hhayi lapho ephumule. Uhlelo lokusebenza luphahlazeka njalo. I-Bluetooth idinga{4}ukumataniswa kabusha njalo ezinsukwini ezimbalwa. Sigcine ngokushintsha wonke amayunithi angama-24 safaka amabhodi e-JBD ngezindleko eziphindwe kabili.
Lokho okwenziwayo kusifundisa okuthile amashidi angalokothi akhulume ngawo: Ikhwalithi ye-BMS ibonakala emininingwaneni ethatha izinyanga ukutholwa.
Ngakho Iyini I-BMS, Ngempela?
Incwadi yokufunda iyaphendula
i-Battery Management System iqapha amandla kagesi weselula, ilawula ukugeleza kwamanje, ilandelela amazinga okushisa, futhi ivikela amaseli e-lithium ezimeni ezibangela imililo noma ukufa ngaphambi kwesikhathi.
Impendulo engokoqobo
yingxenye enquma ukuthi ingabe ibhethri lakho elingu-$15,000 lihlala iminyaka emi-4 noma engu-12. Ukuthi imikhumbi yakho ye-forklift ihlangabezana nomcimbi owodwa oshisayo noma uziro. Ukuthi izimangalo zakho zewaranti zihlala ngaphansi kuka-1% noma zikhuphuke zidlule u-3%.
E-Polinovel, silandele idatha yesiqinisekiso kubo bonke abahlinzeki be-BMS abayisishiyagalombili kusukela ngo-2018. Izinombolo zixoxa indaba ecacile.
Izilinganiso Zesimangalo Sewaranti Yesigaba Somhlinzeki (2018-2022, amayunithi angu-3,247)
| Isigaba Somhlinzeki | Izinga Lokuhluleka Lezinyanga ezingama-24 | Imodi Yokuhluleka Okuyinhloko | Amanothi |
|---|---|---|---|
| I-Orion, REC | 0.4-0.7% | Ukukhukhuleka kwenzwa | Kuyavumelana kuwo wonke amaqoqo |
| JK (JIKONG), JBD | 0.8-1.2% | I-Firmware bugs (iyalungiseka) | Ukwesekwa okuqinile kohlelo lokusebenza |
| Umkhiqizo Wasekhaya A | 2.1% | Isekhethi yokulinganisa | Kuthuthukiswe ngamaqoqo ka-2023 |
| Umkhiqizo Wasekhaya B | 3.1% | Ukwehluleka kwe-MOSFET | Izinkinga zokulawula ikhwalithi |
| DALY | 3.8% | Izinkinga eziningi | Bheka amanothi ngezansi |
Isimo se-DALY sifuna ukuchazwa. Idizayini yabo ebiyelwe evalekile empeleni isebenza kahle ekuvimbeni amanzi. Kodwa uhlelo lwabo lokusebenza lunokulinganisa kwezinkanyezi ezingu-1.7 ngesizathu esihle. Sithole amayunithi anamaphutha okulungiselelwa kwefekthri. Isilinganiso sabo "sokukhipha okungu-100A" ngokuvamile sisho umthamo wokushaja ongu-50A, okungekho muntu okutshela wona kusengaphambili. Ikhasimende elilodwa lithole lokhu ngemuva kokuthi ingqalasizinda yalo yokushaja ingakwazi ukuletha ukusebenza okulindelekile.
Ukukhuluma iqiniso, amayunithi e-DALY asebenza kahle kumaphrojekthi wesabelomali lapho ungeke udinge ukwesekwa kobuchwepheshe. Vele ungalindeli usizo lapho kukhona okungahambi kahle.
I-Economics Ebalulekile Empeleni
Wonke umuntu ucaphuna "143% ye-ROI yokuthuthukisa" isibalo esivela ku-electravehicles.com. Sibone izinombolo ezifanayo ekusetshenzisweni kwethu, kodwa isibalo asiqondile.
Nansi indlela esiyichaza ngayo emakomitini okuthenga:
Ukuqhathaniswa Kwezindleko: I-50-Unit AGV Fleet Ngaphezu kweminyaka eyi-8
| Isigaba Sezindleko | Inketho ye-BMS yesabelomali | Inketho ye-BMS yekhwalithi |
|---|---|---|
| Izindleko ze-BMS zokuqala (iyunithi ngayinye) | $180 | $650 |
| Ukutshalwa kwezimali kwe-Fleet BMS | $9,000 | $32,500 |
| Izindleko zephekhi yebhethri (48V 100Ah LFP) | $45,000 × 50 = $2.25M | Ngokufanayo |
| Ukushintshwa kwephekhi okulindelekile | Unyaka 4-5 (imikhumbi egcwele) | Unyaka 10+ (ingxenye) |
| Izindleko zokushintsha ngoNyaka wesi-5 | ~$2.0M (ukuguguleka kwentengo) | $0 |
| Izehlakalo zesikhathi sokuphumula ezingahleliwe | 12-18 ngonyaka | 2-4 ngonyaka |
| Izindleko zesikhathi sokuphumula ($800/isigameko) | $76,800-$115,200 | $12,800-$25,600 |
Umehluko ka-$23,500 ekutshalweni kwe-BMS ubukeka ubalulekile kuze kube yilapho uhlanganisa umjikelezo owodwa wokushintsha ibhethri. Sibe namakhasimende aphikisana ngalokhu amasonto amaningi, bese asishayela ucingo eminyakeni emibili kamuva acela ukubuyisela amayunithi e-BMS angcono. Ngaleso sikhathi, amanye amangqamuzana asevele ehlukanisile ukuze alulame.
Omunye umsebenzi washintsha ikakhulukazi indlela esibhekana ngayo nalezi zingxoxo. Umsebenzisi we-warehouse e-Ohio ugcizelele ekukhetheni isabelomali naphezu kwezincomo zethu. Ezinyangeni eziyishumi nesishiyagalombili kamuva, bathola umcimbi oshisayo ephaketheni elilodwa. Akekho olimalile, kodwa uphenyo lomshwalense kanye nesikhathi sokungasebenzi kwesikhungo kubabize ngaphezu kwalo lonke utshalomali lwebhethri lokuqala. Asikwazi ukwabelana ngegama lenkampani, kodwa umbiko wesigameko uyirekhodi lomphakathi ngehhovisi lendawo labacishimlilo.
Imininingwane Yobuchwepheshe: Okufanele Ukubheke Ngempela
Amashidi amaningi e-BMS aklelisa ukunemba kwamandla kagesi njengokuthi "±0.5%" noma "±10mV." Zombili zizwakala zinembile. Futhi akakutsheli ukuthi yini ebalulekile.
Umbuzo obalulekile wezinhlelo zokusebenza ze-LiFePO4: ingabe isistimu igcina ukunemba kuyo yonke indawo ye-3.2-3.35V Plateau? Kulapho amaseli e-LFP echitha khona u-80% wesikhathi sawo sokusebenza, futhi ubudlelwano be-voltage-ku-SOC bucishe bube buthule. Iphutha lokulinganisa le-5mV kulobu bubanzi lingaveza iphutha lesilinganiso se-SOC esingu-8%. Lowo umehluko phakathi kokucabanga ukuthi unamandla angama-30% asele futhi empeleni ube nama-22%.
Sicacisa ukunemba okungu-0.3% kwezinhlelo zethu zokusebenza ze-AGV, okubiza cishe ngo-15% ngaphezu kwamasistimu ajwayelekile angu-0.5%. I-tradeoff ikufanele ngemisebenzi edinga ukubikezelwa okuthembekile kobubanzi.
Imininingwane Esiyiqinisekisayo Empeleni (Hhayi nje Ukwamukela Kuma-Datasheets)
| Ipharamitha | Isimangalo se-Datasheet | Esikuvivinyayo | Kungani Kubalulekile? |
|---|---|---|---|
| Ukunemba kwe-voltage | ±0.5% ku-25 degree | ±? at -10℃kanye 45 degree | Amazinga okushisa e-warehouse ayahluka |
| Ibhalansi yamanje | "Ukulinganisa okusebenzayo" | Isilinganiso sangempela se-mA | Abaningi bathi "kuyasebenza" nge-40mA passive |
| Isilinganiso samanje | 100A okuqhubekayo | Ukubamba okuphezulu, ukuhlehlisa ijika | Iziqongo ezingu-130A zibulala amayunithi alinganiselwe angu-100A- |
| Ukuxhumana | "CAN iyahambisana" | Ukuqinisekiswa kwephrothokholi ngesiguquli esiqondiwe | "Ukuvumelana" kusho izinto ezahlukene |
Indaba yamanje yokulinganisa idinga ukugcizelelwa. Uma i-spec sheet ingasho ivelu ethile ye-milliamp yokulinganisa yamanje, "umsebenzi wokulinganisa" ungase ungabi khona nganoma iyiphi indlela enengqondo. Amasistimu we-Passive ngokuvamile asebenzisa i-30-100mA. Amasistimu asebenzayo empeleni adlulisa amandla phakathi kwamaseli asebenza ku-600mA noma ngaphezulu. Sibone amayunithi amakethwa "njengamabhalansi asebenzayo" akala u-45mA ekuhlolweni.
Inothi Lezakhiwo ezishibhile ze-BMS
Lokhu kuvela engxoxweni yenkundla yonjiniyela esisindise esinqumweni esibi. Eminye imiklamo ye-BMS{{1}ebiza kancane isebenzisa-ama-chips okuvikela iseli elilodwa (njenge-DW01) anentambo ngokuhambisana ukuze adale{4}}ukulungiselelwa kwamaseli amaningi. Ama-chips enzelwe izinhlelo zokusebenza ze-1S kuphela. Uma abakhiqizi bewahlanganisa ndawonye amaphekhi e-4S, 10S, noma 20S, i-chip ngayinye isebenza ngokuzimela ngaphandle kokuvikela okuhlanganisiwe.
Imodi yokwehluleka iyingozi: uma i-chip eyodwa ifa ngenxa yokuphuma okumile noma umswakama, lelo qembu leseli lilahlekelwa yikho konke ukuvikeleka ngenkathi yonke isistimu iqhubeka nokusebenza. Iphakethe alivali. Ayikuqapheli. Ivele ihambe ingavikelekile kuze kube khona into ehlulekayo ngendlela eyinhlekelele.
Imiklamo yekhwalithi ye-BMS isebenzisa-ama-IC azinikele okuqapha amaseli avela e-Texas Instruments, Amadivayisi e-Analog, noma abahlinzeki abafanayo. Lawa mashiphu aqapha wonke amaseli ngamasekhethi ahlanganisiwe anamamodi okwehluleka azenzakalela ukuvala shaqa okuphephile. Umehluko wezindleko mhlawumbe u-$15-30 ngeyunithi ngayinye ngevolumu. Umehluko wokuphepha awunakuqhathaniswa.
Siyekile ukucabangela noma yimuphi umphakeli ongakwazi ukuchaza ukwakheka kwe-IC yakhe. Uma unjiniyela wezokuthengisa engazi noma usebenzisa-amashiphu eseli elilodwa ngokuhambisana noma{2}}amaseli afanele ama-IC amaningi, lokho kukutshela okuthile mayelana nokujula kwawo kobunjiniyela.
Izitifiketi: Lokho Abakushoyo Nokungasho Ukuthi
Amakhasimende ethu aseNyakatho Melika avame ukucela "UL certified" BMS. Amagama abalulekile lapha.
Isitifiketi se-UN38.3 sifaka ukuphepha kwezokuthutha. Ukudlidliza, ukuphakama, ukuhamba ngebhayisikili okushisayo, umthelela. Ayibheki ukuphepha kokusebenza ngesikhathi sokusetshenziswa kwangempela. Lonke ibhethri le-lithium elithunyelwa emhlabeni wonke lidinga i-UN38.3. Ukuba nakho kusho ukuthi umkhiqizo wakho ungakwazi ukweqa imingcele ngokusemthethweni. Ukuba nayo akusho ukuthi i-BMS izovikela amaseli akho ngesikhathi sephutha lokushaja.
I-IEC 62619 ifaka-isigaba sokuphepha kwezicelo zezimboni. Leli izinga elibhekana nokuvinjelwa kokubaleka kokushisa kanye nezidingo zokuhlanganisa i-BMS. Uma usebenzisa amabhethri e-lithium kumaforklift, ama-AGV, noma isitoreji esimile, lesi isitifiketi esibalulekile ekuphepheni kokusebenza.
I-UL 1973 isebenza ngokuqondile endaweni yokugcina amandla emile eNyakatho Melika. Kubandakanya izimfuneko zokuhlolwa kokusakazwa okushisayo nokubekezelela amaphutha i-IEC 62619 engayimbozi ngokugcwele.
Isifinyezo Sokumbozwa Kwesitifiketi
| Okujwayelekile | Ihlanganisa Ezokuthutha | Ihlanganisa Ukusebenza | Ihlanganisa i-Thermal Runaway | Iyadingeka Ukuze |
|---|---|---|---|---|
| UN38.3 | Yebo | Cha | Cha | Ukuthunyelwa kwamanye amazwe |
| I-IEC 62619 | Cha | Yebo | Yebo | Ukuthunyelwa kwezimboni |
| UL 1973 | Cha | Yebo | Yebo | Isitoreji esimisiwe saseNyakatho Melika |
| I-UL9540 | Cha | Ileveli-yesistimu | Yebo | Qedela ukufakwa kwe-ESS |
Sibone abahlinzeki bempahla befuna isimo "sengxenye eqashelwa yi-UL" (ikhadi eliphuzi) njengesilingana nokufakwa kuhlu okugcwele kwe-UL. Akunjalo. Iphrojekthi yaseNyakatho Melika esiyibhidayo iye yahoxiswa ngenxa yokuthi ithimba lonjiniyela bekhasimende lamukele amadokhumenti ekhadi eliphuzi, futhi igunya elinegunya liwanqabele ngesikhathi sokuhlolwa kokugcina. Umsebenzi wabambezeleka izinyanga ezintathu ngesikhathi bethola imishini ehambisanayo.
Izinga le-IEEE 2686-2024 kufanele lishiwo lapha. Akusona isitifiketi esiyisibopho, kodwa simelela inkambiso yokuqala enconyiwe ngokuqondile yokugcina amandla e-BMS emile. Abahlinzeki ababhekisela ekuthotshelweni kwe-IEEE 2686 okungenani banaka izinqubo ezihamba phambili zamanje. (i-exponent.com igcina izifinyezo ezinhle zobuchwepheshe zalawa mazinga uma ufuna ukufunda okujulile.)
Sibahlola Kanjani Abahlinzeki Manje
Ngemva kwezifundo ezanele esizitholile, sakha inqubo yokuhlola engaguquki. Akuwona wonke amaphrojekthi adinga isheke ngalinye, kodwa ukweqa izinyathelo kusibize izikhathi ezanele lapho sizenzakalela ukuze senze kahle.
Ukuphepha nokuqinisekisa ukuthobelana kuza kuqala. Sicela izinombolo zangempela zombiko wokuhlolwa, hhayi nje izimangalo zesitifiketi. Umbiko wokuhlolwa ovumelekile we-IEC 62619 unenombolo yombhalo, ilabhorethri yokuhlola, nezimo ezithile zokuhlola. Uma umphakeli enganikeza kuphela isithombe sesitifiketi, sijula.
Ukufanisa kobuchwepheshe okulandelayo. Ingabe ububanzi be-voltage ye-BMS empeleni bumboza ukucushwa kwephakethe lakho ngemajini? I-16S BMS emkhawulweni wayo omkhulu ayifani ne-20S BMS egijima ku-16S. Ingabe iphrothokholi yokuxhumana isebenza ngempela neshaja yakho kanye nesiguquli, noma ingabe "i-CAN iyahambisana" isho ukuthi "sisebenzisa i-CAN kodwa ngokufometha komlayezo wobunikazi"?
Siqinisekisa ukulinganisa kwamanje ngokuzimela uma kungenzeka. Abahlinzeki bayazi ukuthi siyahlola, okuvame ukugcina amashidi acacisiwe ethembekile.
Ukuqhubeka kokuhlinzeka kubaluleke kakhulu kunalokho amaqembu amaningi okuthenga eqaphela. Umhlinzeki we-BMS oyeka imodeli yakho maphakathi-nephrojekthi udala ukushintshwa kwekhanda elibuhlungu iminyaka. Sibuza mayelana nemephu yemigwaqo yomkhiqizo, inani elincane le-oda lokuthenga esikhathini esizayo, nokuthi ingabe umklamo usebenzisa izingxenye zempahla noma ama-ASIC angokwezifiso angase angatholakali.
Ngezixazululo zethu zebhethri lezimboni e-Polinovel, ukuhlanganiswa kwe-BMS kwenzeka phakathi neseli-lo{1}}lokupakisha idizayini. Asilungisi kabusha-i-BMS yenkampani yangaphandle kumaphekhi aqediwe. Lokhu kusivumela ukuthi sithuthukise ukubekwa kwenzwa, umzila wezintambo, nokuphathwa kokushisa njengesistimu kunokuba sibhekane nokuphazanyiswa kokufakwa kwe-aftermarket. Ithimba lethu lonjiniyela linika osayizi imininingwane ye-BMS esekelwe ezidingweni zangempela zohlelo lokusebenza: imijikelezo yomsebenzi, amaphrofayili amanje aphezulu, amazinga okushisa azungezile, izidingo zephrothokholi yokuxhumana.
Uma uhlola izinketho zebhethri ye-lithium yezinto eziphathwayo noma izimoto zezimboni, ingxoxo ye-BMS kufanele yenzeke ngaphambi kwesikhathi kunqubo yokucaciswa, hhayi njengokucatshangelwa kwamuva. Imibuzo ebalulekile iwukusebenza{1}}okuqondile, futhi ukuqhathaniswa kwe-generic specs kugeja okuningi kwalokho okuthinta{2}}ukuthembeka kwesikhathi eside.
Finyelela ekhasini lethu lokuxhumana ngemininingwane yesicelo sakho. Sizokutshela ngokweqiniso ukuthi izixazululo zethu ziyahambisana yini nezidingo zakho noma kufanele ubheke kwenye indawo.
