Amaphakethe webhethri we-lithium afana nezinjini ezingenasondlo; aI-BMSNgaphandle komsebenzi wokulinganisa kumane nje kungumqoqi wedatha futhi akunakubhekwa njengohlelo lokuphatha. Zombili zokulinganisa ezisebenzayo nezesabekayo zihlose ukuqeda ukungahambisani ngaphakathi kwephakethe lebhethri, kodwa izimiso zazo zokusebenzisa zihlukile ngokuyisisekelo.
Ukucacisa, le ndatshana ichaza ukulinganisa okusungulwe yi-BMS ngokusebenzisa ama-algorithms njengokulinganisa okusebenzayo, ngenkathi kulinganiselwa ukuthi kulinganise ukusebenzisa amandla okuqeda amandla kubizwa amandla okuqeda amandla. Ukulinganisa okusebenzayo kubandakanya ukudluliswa kwamandla, kanti ukulinganisa nje kubandakanya ukuhlukaniswa kwamandla.
Izimiso Zokuklanywa Kwebhethri Basisekelo
- Ukushaja kumele kuyeke lapho iseli lokuqala likhokhiswa ngokuphelele.
- Ukukhishwa kufanele kuphele lapho iseli lokuqala liqediwe.
- Amangqamuzana abuthakathaka akhula ngokushesha kunamaseli anamandla.
- -Elihleli ngecala elibuthakathaka ekugcineni lizokhawulela iphakethe lebhethri'umthamo ongasebenziseka (isixhumanisi esibuthakathaka kunazo zonke).
- Ukushisa kwesistimu ku-gradient ngaphakathi kwephakethe lebhethri kwenza amaseli asebenza emazingeni okushisa aphakeme aphezulu abuthaka.
- Ngaphandle kokulinganisa, umehluko wamandla kagesi phakathi kwamangqamuzana abuthakathaka futhi aqine akhuphuka ngokushaja ngakunye nangokukhipha umjikelezo. Ekugcineni, iseli elilodwa lizosondela kakhulu lapho eliseduze kwamandla kagesi, okulimaza amakhono wephakethe namakhono okuphuma.
Ngenxa yokuphazamiseka kwamaseli ngokuhamba kwesikhathi kanye nezimo zokushisa ezahlukahlukene kusuka ekufakweni, ukulinganiswa kweseli kubalulekile.
Amabhethri e-Lithium-Ion ngokuyinhloko abhekana nezinhlobo ezimbili zokungaziphathi kahle: ukushaja ubuhlakani kanye nokungaziphathi kahle. Ukushaja ukuphazamiseka kwenzeka lapho amaseli esele esezingeni elifanayo ahluka kancane kancane. I-Mismatch yenzeka lapho amangqamuzana anamakhono okuqala ahlukene asetshenziswa ndawonye. Yize amaseli ngokuvamile aqondaniswe kahle uma ekhiqizwa ngasikhathi sinye ngezinqubo ezifanayo zokukhiqiza, ama-mismaches angavela kumaseli anemithombo engaziwa noma umehluko obalulekile wokukhiqiza noma umehluko obalulekile wokukhiqiza.
Ukulinganisa okusebenzayo vs. Ukulinganisa nje
1. Inhloso
Amaphakethe webhethri aqukethe amaseli amaningi axhumene ochungechungeni, okungenzeka ukuthi afane nawo afanayo. Ukulinganisa kuqinisekisa ukuthi ukuphambuka kwama-voltage voltage kugcinwe ngaphakathi kwamabanga alindelekile, kugcina ukusetshenziswa nokulawulwa okuphelele nokulawulwa, ngaleyo ndlela kuvikele ukulimala kanye nokwelula impilo yebhethri.
2. Ukuqhathanisa Design
- Ukulinganisa nje: Ngokuvamile kukhipha amaseli aphezulu we-voltage kusetshenziswa ama-resistors, kuguqula amandla amaningi ekushiseni. Le ndlela inweba isikhathi sokushaja amanye amaseli kepha isebenze kahle.
- Ukulinganisa okusebenzayo: inqubo eyinkimbinkimbi ebikaza kabusha ngaphakathi kwamaseli ngesikhathi sokushaja kanye nemijikelezo yokukhipha, ukunciphisa isikhathi sokushaja kanye nokwengeza isikhathi sokukhipha. Ngokuvamile kusebenzisa amasu aphansi alinganiselayo ngesikhathi sokuhlanzwa namasu aphezulu okulinganisa ngesikhathi sokushaja.
- Izinzuzo nokuqhathanisa: Ukulinganisa nje kwe-Passive kulula futhi kushibhile kepha kusebenza kahle, njengoba kunwebeka amandla njengokushisa futhi kunciphisa imiphumela yokulinganisa. Ukulinganisa okusebenzayo kusebenza kahle, kudlulisa amandla phakathi kwamaseli, okuthuthukisa ukusebenza kokusetshenziswa futhi kufezekisa ukulinganisela ngokushesha okukhulu. Kodwa-ke, kufaka phakathi izakhiwo eziyinkimbinkimbi nezindleko eziphakeme, nezinselelo zokuhlanganisa lezi zinhlelo ku-ICS ezinikezele.
Ukugcina
Umqondo we-BMS ekuqaleni wathuthukiswa phesheya, enomklamo wakuqala we-IC ugxile ekutholeni ama-voltage kanye nokutholwa kokushisa. Umqondo wokulinganisa kamuva wethulwa, ekuqaleni usebenzisa izindlela zokulwa nokukhuthaza ezihlanganiswe ku-ICS. Le ndlela manje igcwele, nezinkampani ezinjenge-TI, Maxim, kanye noLinear ekhiqiza ama-chip anjalo, ezinye zihlanganisa ukushintshanisa abashayeli kuma-chip.
Kusuka ezimisweni kanye nemidwebo yokulinganisa nje, uma iphakethe lebhethri liqhathaniswa nomgqomo, amaseli afana nezinti. Amaseli anamandla aphezulu amapulangwe amade, futhi lawo anamandla aphansi amapulangwe amafushane. Ukulinganisa nje kuphela "kunciphisa" amapulangwe amade, okuholela emandleni achithekile kanye nokungasebenzi kahle. Le ndlela inemikhawulo, kufaka phakathi ukudicilela phansi okuphansi kokushisa kanye nemiphumela yokulinganisa kancane emaphaketheni amakhulu wamandla.
Ukulinganisa okusebenzayo, ngokuphambene, "kugcwalisa amapulangwe amafushane," kudlulisa amandla kusuka kumaseli aphezulu wamandla kwawo aphansi, okuholela ekufinyeleleni okuphezulu kanye nokutholakala okusheshayo okulinganiselayo. Kodwa-ke, yethula izinkinga nezinkinga zezindleko, nezinselelo ekwakheni ama-matric kanye nokulawula ukushayela.
Njengoba kunikezwe ama-trade-off, ukulinganisa nje kungahle kufanelekile amaseli ngokuvumelana okuhle, ngenkathi kulinganiselwa ukuthi kulinganise kungcono kumaseli anokungafani okukhulu.
Isikhathi sePosi: Aug-27-2024
