Izinto zebhethri ze-lithium zinezici ezithile ezizivimbela ekushajweni ngokweqile, ziphele-kukhishwa, phezu-yamanje, i-short-circuited, futhi iyashajwa futhi ikhishwa emazingeni okushisa aphezulu kakhulu naphansi.Ngakho-ke, iphakethe lebhethri le-lithium lizohlala lihambisana ne-BMS ethambile.I-BMS ibhekisela ku-Uhlelo Lokuphatha Ibhethriibhethri.Uhlelo lokuphatha, olubizwa nangokuthi ibhodi lokuvikela.
Umsebenzi we-BMS
(1) Ukubona kanye nesilinganiso Ukukala ukubona isimo sebhethri
Lona umsebenzi oyisisekelo weI-BMS, okuhlanganisa ukukalwa nokubala kwamanye amapharamitha ezinkomba, okuhlanganisa i-voltage, yamanje, izinga lokushisa, amandla, i-SOC (isimo sokushaja), i-SOH (isimo sezempilo), i-SOP (isimo samandla), i-SOE (isimo amandla).
I-SOC ingaqondwa ngokuvamile ngokuthi mangakanani amandla asele ebhethrini, futhi inani layo liphakathi kuka-0-100%.Lena ipharamitha ebaluleke kakhulu ku-BMS;I-SOH ibhekisela esimweni sezempilo sebhethri (noma izinga lokuwohloka kwebhethri), okuyisilinganiso sangempela sebhethri lamanje.Uma kuqhathaniswa nomthamo olinganiselwe, lapho i-SOH ingaphansi kuka-80%, ibhethri ayikwazi ukusetshenziswa endaweni yamandla.
(2) I-alamu nesivikelo
Uma kwenzeka okungavamile ebhethrini, i-BMS ingaxwayisa inkundla ukuze ivikele ibhethri futhi ithathe izinyathelo ezihambisanayo.Ngesikhathi esifanayo, ulwazi lwe-alamu olungavamile luzothunyelwa endaweni yokuqapha nokuphatha futhi kukhiqize amazinga ahlukene olwazi lwe-alamu.
Isibonelo, uma izinga lokushisa lishisa ngokweqile, i-BMS izonqamula ngokuqondile ukushaja bese ikhipha isekethe, ivikele ukushisa ngokweqile, futhi ithumele i-alamu ngemuva.
Amabhethri e-lithium azokhipha izexwayiso ezindabeni ezilandelayo:
Imali engaphezulu: iyunithi eyodwa ngaphezulu-i-voltage, isamba se-voltage ngaphezulu-i-voltage, ishaja ngaphezulu-okwamanje;
Ukukhipha ngokweqile: iyunithi eyodwa ngaphansi-i-voltage, isamba se-voltage ngaphansi-i-voltage, khipha ngaphezulu-okwamanje;
Izinga lokushisa: Izinga lokushisa eliwumgogodla webhethri liphezulu kakhulu, izinga lokushisa le-ambient liphezulu kakhulu, izinga lokushisa le-MOS liphezulu kakhulu, izinga lokushisa lengqikithi yebhethri liphansi kakhulu, futhi izinga lokushisa le-ambient liphansi kakhulu;
Isimo: ukucwiliswa emanzini, ukushayisana, ukuguqulwa, njll.
(3) Ukuphatha ngokulinganisela
Isidingo sokubaukuphatha okunokulinganiselakuvela ngenxa yokungaguquguquki ekukhiqizeni nasekusetshenzisweni kwebhethri.
Ngokombono wokukhiqiza, ibhethri ngalinye linomjikelezo walo wempilo nezici.Awekho amabhethri amabili afana ncamashi.Ngenxa yokungahambelani kwezihlukanisi, ama-cathodes, ama-anode nezinye izinto, amandla amabhethri ahlukene awakwazi ukuhambisana ngokuphelele.Isibonelo, izinkomba zokuvumelana zomehluko we-voltage, ukumelana kwangaphakathi, njll. zebhethri ngalinye elakha iphakethe lebhethri elingu-48V/20AH ziyahlukahluka phakathi kwebanga elithile.
Ngokombono wokusetshenziswa, inqubo yokusabela kwe-electrochemical ayikwazi ukufana phakathi nokushajwa nokushajwa kwebhethri.Ngisho noma kuyiphakethe lebhethri elifanayo, ukushajwa kwebhethri namandla okukhipha kuzohluka ngenxa yamazinga okushisa ahlukene namadigri okushayisana, okuholela kumandla weseli yebhethri angahambisani.
Ngakho-ke, ibhethri idinga kokubili ukulinganisa okwenziwayo kanye nokulinganisa okusebenzayo.Okungukuthi ukusetha i-threshold yokuqala nokuqeda ukulinganisa: isibonelo, eqenjini lamabhethri, ukulinganisa kuyaqalwa lapho umehluko phakathi kwenani elidlulele le-voltage yeseli kanye ne-voltage evamile yeqembu ifinyelela ku-50mV, futhi ukulinganisa kuyaphela. kwe 5mv.
(4) Ukuxhumana nokubeka indawo
I-BMS inokwehlukileimojula yokuxhumana, enesibopho sokudluliswa kwedatha kanye nokuma kwebhethri.Ingadlulisela idatha efanelekile ezwiwe futhi ikalwa endaweni yokuphatha ukusebenza ngesikhathi sangempela.
Isikhathi sokuthumela: Nov-07-2023