Izinto zebhethri le-lithium zinezici ezithile ezivimbela ukuthi zingashajwa ngokweqile, zidlulele-kukhishwe, ngaphezulu-ugesi, osebenza nge-short circuit, futhi oshajwayo futhi okhishwayo emazingeni okushisa aphezulu kakhulu naphansi. Ngakho-ke, ibhethri le-lithium lizohlala lihambisana ne-BMS ethambile. I-BMS ibhekisela ku-Uhlelo Lokuphathwa Kwebhethriibhethri. Uhlelo lokuphatha, olubizwa nangokuthi ibhodi lokuvikela.
Umsebenzi we-BMS
(1) Ukuqonda nokulinganisa Ukulinganisa ukuzwa isimo sebhethri
Lona umsebenzi oyisisekelo weI-BMS, kufaka phakathi ukulinganisa nokubalwa kwamapharamitha athile esibonakaliso, kufaka phakathi i-voltage, i-current, izinga lokushisa, amandla, i-SOC (isimo sokushaja), i-SOH (isimo sempilo), i-SOP (isimo samandla), i-SOE (isimo se amandla).
I-SOC ingaqondwa ngokuvamile njengokuthi kusele amandla angakanani ebhethrini, futhi inani layo liphakathi kuka-0-100%. Lena ipharamitha ebaluleke kakhulu ku-BMS; i-SOH ibhekisela esimweni sempilo sebhethri (noma izinga lokuwohloka kwebhethri), okuyikhono langempela lebhethri lamanje. Uma kuqhathaniswa nomthamo olinganisiwe, lapho i-SOH ingaphansi kuka-80%, ibhethri alikwazi ukusetshenziswa endaweni yamandla.
(2) I-alamu nokuvikelwa
Uma kwenzeka into engavamile ebhethrini, i-BMS ingaxwayisa ipulatifomu ukuthi ivikele ibhethri futhi ithathe izinyathelo ezifanele. Ngesikhathi esifanayo, ulwazi lwe-alamu engavamile luzothunyelwa epulatifomu yokuqapha nokuphatha futhi lukhiqize amazinga ahlukene olwazi lwe-alamu.
Isibonelo, uma izinga lokushisa lishisa kakhulu, i-BMS izonqamula ngqo isekethe yokushaja nokukhipha, yenze ukuvikelwa kokushisa ngokweqile, bese ithumela i-alamu ngemuva.
Amabhethri e-lithium azokhipha izexwayiso ikakhulukazi ngezinkinga ezilandelayo:
Ukushaja ngokweqile: iyunithi eyodwa ngaphezulu-i-voltage, i-voltage iyonke iphelile-i-voltage, ishaja ngaphezulu-ugesi;
Ukukhipha igesi ngokweqile: iyunithi eyodwa ngaphansi-i-voltage, i-voltage iyonke ngaphansi-i-voltage, ukukhishwa ngaphezulu-ugesi;
Izinga Lokushisa: Izinga lokushisa elingaphakathi kwebhethri liphezulu kakhulu, izinga lokushisa elingaphakathi kwebhethri liphezulu kakhulu, izinga lokushisa le-MOS liphezulu kakhulu, izinga lokushisa elingaphakathi kwebhethri liphansi kakhulu, kanti izinga lokushisa elingaphakathi kwebhethri liphansi kakhulu;
Isimo: ukucwiliswa emanzini, ukushayisana, ukuguqulwa, njll.
(3) Ukuphathwa okulinganiselayo
Isidingo sokuthiukuphathwa okulinganiselayokuvela ekungahambelani kokukhiqizwa nokusetshenziswa kwebhethri.
Ngokombono wokukhiqiza, ibhethri ngalinye linomjikelezo walo wokuphila kanye nezici zalo. Awekho amabhethri amabili afana ncamashi. Ngenxa yokungalingani kwama-separator, ama-cathode, ama-anode nezinye izinto, amandla amabhethri ahlukene awakwazi ukuhambisana ngokuphelele. Isibonelo, izinkomba zokuvumelana komehluko we-voltage, ukumelana kwangaphakathi, njll. kweseli ngalinye lebhethri elakha iphakethe lebhethri le-48V/20AH ziyahlukahluka ngaphakathi kobubanzi obuthile.
Ngokombono wokusetshenziswa, inqubo yokusabela kwe-electrochemical ayikwazi ukuhambisana ngesikhathi sokushaja nokukhipha ibhethri. Ngisho noma kuyiphakethe lebhethri elifanayo, ukushaja kwebhethri kanye nomthamo wokukhipha kuzohluka ngenxa yokushisa okuhlukile kanye namazinga okushayisana, okuholela ekungahambelani kwamandla eseli lebhethri.
Ngakho-ke, ibhethri idinga kokubili ukulinganisela okungasebenzi kanye nokulinganisela okusebenzayo. Lokho kusho ukusetha imingcele emibili yokuqala nokuqeda ukulinganisa: isibonelo, eqenjini lamabhethri, ukulinganisa kuqala lapho umehluko phakathi kwenani elidlulele le-voltage yeseli kanye ne-voltage evamile yeqembu ifinyelela ku-50mV, kanti ukulinganisa kuphela ku-5mV.
(4) Ukuxhumana kanye nokubeka indawo
I-BMS ine-imodyuli yokuxhumana, enesibopho sokudlulisa idatha kanye nokubeka ibhethri endaweni. Ingadlulisela idatha efanele ezwayo futhi elinganisiwe epulatifomu yokuphathwa kokusebenza ngesikhathi sangempela.
Isikhathi sokuthunyelwe: Novemba-07-2023
