Indlela Yokukhetha I-48V LiFePO4 BMS Yamaphakethe Ebhethri Esitoreji Samandla Sasekhaya

Ukukhetha uhlelo lokuphatha ibhethri (i-BMS) lwephakethe lokugcina isitoreji sasekhaya le-LiFePO4 lesigaba sama-48V kuqala ngomklamo webhethri—hhayi igama lomkhiqizo. Ukuhlolwa okubalulekile inani lamaseli alandelanayo, amandla okukhipha kanye nokushaja, ukuxhumana kwe-inverter, izimo zokushisa, kanye nanoma yiluphi uhlelo lokuxhuma amaphakethe ngesikhathi esifanayo.

Lo mhlahlandlela usiza abakhiqizi bamaphakethe ebhethri kanye nabahlanganisi besitoreji samandla ukulungiselela lezo zidingo futhi babone ukuthi yiziphi izinketho ze-DALY ze-BMS zokugcina ikhaya ezidinga ukubuyekezwa okwengeziwe kobuchwepheshe.

I-“16S” isho amaseli ayi-16 noma amaqembu amaseli axhunywe ochungechungeni. Kusetshenziswa i-voltage ejwayelekile yamaseli e-LiFePO4 engu-3.2V, i-voltage ejwayelekile yephakethe ingu-16 × 3.2V = 51.2V. Amaphakethe anjalo avame ukuchazwa njengezinhlelo zekilasi lama-48V; i-“48V” iyodwa ayibonisi inani lochungechunge.

Qinisekisa ikhemistri yamaseli, inani lochungechunge, imikhawulo ye-voltage yomkhiqizi wamaseli, kanye nobubanzi be-voltage yokusebenza kwebhethri ngaphambi kokukhetha i-BMS. Isifundo sokuxhuma i-DALY 16S esijwayelekile siyatholakala ukuze siqonde ukuzwela kwe-series-cell, kodwa asithathi indawo yedayagramu yokuxhuma enikezwe ngemodeli eqondile ye-LK noma ye-LM.

Linganisela ugesi wokukhipha ohlangothini lwebhethri kusuka emandleni okukhipha i-AC aqhubekayo e-inverter, i-voltage yebhethri ephansi kakhulu, kanye nokusebenza kahle kwe-inverter: ugesi we-DC olinganiselwe (A) ≈ amandla okukhipha i-AC (W) ÷ [i-voltage yebhethri (V) × ukusebenza kahle].

Isibonelo, 5,000W ÷ (48V × 0.90) ≈ 116A. Ku-voltage yebhethri ephansi ecatshangelwayo engu-44V, ukubalwa okufanayo kunikeza cishe u-126A. Lezi zibalo zibonisa ukuthi kungani ilebula elijwayelekile elingu-48V linganele; akekho kubo osungula isilinganiso sokugcina se-BMS.

Hlola amandla aqhubekayo e-inverter kanye nobude bokukhuphuka, i-voltage yebhethri yokusebenza encane, izinga lokukhishwa elivunyelwe yiphakethe, izilinganiso eziqhubekayo ze-BMS kanye nezinga eliphezulu, izinga lokushisa lokusebenza, kanye nezimo zokuvala. Hlola ngokwahlukile amandla okushaja aphezulu avela kushaja noma ku-inverter kanye nemininingwane yeseli yebhethri. Ungacabangi ukuthi ukukhetha isilinganiso samandla aphezulu esilandelayo kuqinisekisa ngokuzenzakalelayo ukufaneleka.

Qinisekisa ukuthi i-inverter idinga isixhumanisi sokuxhumana kwebhethri noma ingasebenza ngaphansi kwesu lokulawula elisekelwe ku-voltage eliqinisekisiwe ngokwahlukile. I-CAN (Inethiwekhi Yendawo Yokulawula) kanye ne-RS485 kuyizixhumanisi zokuxhumana; ukufanisa i-interface akuqinisekisi ukuthi i-BMS kanye ne-inverter zisebenzisa imiyalezo efanayo noma imithetho yokulawula.

Nikeza umenzi we-inverter kanye nemodeli eqondile, iphrothokholi edingekayo kanye nenguqulo, kanye nanoma yimiphi imibhalo yokuhlanganisa etholakalayo. Cela i-DALY ukuthi iqinisekise ukwesekwa noma ukuthi kungenzeka yini ukulungiswa kwephrothokholi okwenziwe ngokwezifiso kokucushwa kwe-BMS okuphakanyisiwe. Ungaphathi isici se-CAN/RS485 esijwayelekile njengesimangalo sokuhambisana.

Hlola amazinga okushisa avunyelwe ngumkhiqizi weseli okushaja nokukhipha kanye nendawo yokufakwa ehlosiwe. Imikhawulo yokushaja yesimo sezulu esibandayo kanye nanoma yisiphi isidingo sokushisa kumele kuhlolwe ngamaseli angempela kanye nohlelo. Ungacabangi ukuthi i-DALY BMS ethile ifaka ukulawula ukushisa ngaphandle kokuthi kuqinisekiswe kulolo lungiselelo.

Ukulinganisa amaseli kungasiza ekuphatheni umehluko phakathi kwamaseli axhunywe ochungechungeni, kodwa akukwazi ukufaka esikhundleni sokufanisa amaseli noma ukulungisa ukwakheka kwebhethri okungafanele. Qinisekisa ukuthi i-BMS ehlongozwayo isebenzisa ukulinganisa okungasebenzi noma ukucushwa kokulinganisela okusebenza okungakhethwa bese uqinisekisa izimo zamanje nezokusebenza zenketho eqondile.

Uma ukufakwa kusebenzisa amabhethri amaningi ngesikhathi esifanayo, qinisekisa i-BMS efakwe ephaketheni ngalinye, ukwakheka kokwabelana kwamanje kanye nokuvikelwa, ukufanisa iphakethe ne-voltage, ukuxhumana, ukuhlukaniswa kwamaphutha, kanye nenqubo yokuqalisa. Inani eliphakeme elishiwo lamaphakethe ahambisanayo akulona ubufakazi bokuthi noma yikuphi ukuhlanganiswa kwamaphakethe nama-inverter kuzosebenza ndawonye ngokuphephile.

Cela isibuyekezo sezinga lesistimu ukuze uthole ukucushwa okuhambisanayo. Inqubo eningiliziwe yokuxhuma nokufaka izintambo ifaneleka ezincwadini zomkhiqizo ezisebenzayo kanye namadokhumenti okuklama uhlelo, hhayi kulokhu kubuka konke kokukhetha.

Ishidi lokuqhathanisa le-DALY lesizukulwane sesi-4 le-LK/LM elinikezwe kulesi sihloko libala ukucushwa kwe-LiFePO4 8S/16S kanye nezinketho zamanje zokushaja/ukukhipha okuqhubekayo. Lezi yizilinganiso ezingaba khona, hhayi ukufana okuzenzakalelayo ne-inverter ethile.

I-LK: Isilinganiso sokushaja/sokukhipha okuqhubekayo esingu-100A. I-LM: Isilinganiso sokushaja/sokukhipha okuqhubekayo esingu-150A noma esingu-200A. Ishidi lokuqhathanisa liphinde libonise ukulinganisela okusebenzayo okungakhethwa; ungacabangi ukuthi yonke iyunithi iyayifaka.

Ngomklamo olinganiselwa ukuthi udonsa cishe u-116A ngaphansi kwesimo esisodwa sokusebenza, isilinganiso esiqhubekayo se-100A ngeke sihlangabezane naleso simo esilinganiselwe. Inketho ye-150A ingase ifanele ukuhlolwa, kodwa ukukhetha kokugcina kusadinga ukuhlolwa kwe-voltage encane yephakethe, iziqongo zamanje, i-charge current, izimo zokushisa, ukucushwa, kanye nedatha yomkhiqizo eqondile.

Ukuze uthole isibuyekezo sokuqala sobuchwepheshe, nikeza: i-chemistry yebhethri kanye nenani lochungechunge (isibonelo, i-16S LiFePO4); umthamo wephakethe (Ah); imikhawulo yamandla kagesi weseli; umenzi/imodeli ye-inverter kanye namandla aqhubekayo/okunyuka; ukushaja nokukhipha amandla okuqhubekayo okudingekayo; amandla aphezulu kanye nobude besikhathi; izidingo zokuxhumana; amazinga okushisa okufakwa okulindelekile; inani lamaphakethe ahambisanayo; kanye nenani elilindelekile le-oda.

I-DALY ingasebenzisa lolu lwazi ukuhlola ukucushwa kwe-LK/LM okufanele, ukuhlonza noma yiluphi ulwazi olusadingeka, nokuxoxa ngemibhalo yobuchwepheshe etholakalayo kanye nezinketho zekhotheshini. Ukukhethwa kokugcina kwemodeli kanye nokusekelwa kwephrothokholi kumele kuqinisekiswe ukucushwa okuceliwe.