Ngenxa yezici zeibhethri ye-lithiumngokwayo, uhlelo lokuphatha ibhethri (BMS) kufanele lwengezwe.Amabhethri angenawo uhlelo lokuphatha anqatshelwe ukusetshenziswa, okuzoba nezingozi ezinkulu zokuphepha.Ukuphepha kuhlala kubalulekile kumasistimu ebhethri.Amabhethri, uma engavikelwe kahle noma engalawulwa kahle, angaba sengozini yokuphila okufushane, ukulimala, noma ukuqhuma.

I-BMS: (Isistimu Yokulawula Ibhethri) isetshenziswa kakhulu kumabhethri kagesi, njengezimoto zikagesi, amabhayisikili kagesi, ukugcinwa kwamandla nezinye izinhlelo ezinkulu.

Imisebenzi esemqoka yohlelo lokuphathwa kwebhethri (BMS) ihlanganisa amandla ebhethri, izinga lokushisa kanye nesilinganiso samanje, ibhalansi yamandla, ukubala kwe-SOC nesibonisi, i-alamu engavamile, ukuphathwa kokushaja nokukhipha, ukuxhumana, njll., ngaphandle kwemisebenzi yokuvikela eyisisekelo yohlelo lokuvikela. .Enye i-BMS iphinde ihlanganise ukuphathwa kokushisa, ukushisisa kwebhethri, ukuhlaziya impilo yebhethri (SOH), ukulinganisa ukumelana nokushisa, nokunye.

Isingeniso nomsebenzi we-BMS nokuhlaziya:
1. Ukuvikelwa kwebhethri, okufana ne-PCM, ukushajwa okungaphezulu, ukuchitheka ngokweqile, izinga lokushisa elingaphezulu, phezu kwamanje, nokuvikelwa kwesekethe emfushane.Njengamabhethri ajwayelekile e-lithium-manganese nezinto ezintathuamabhethri e-lithium-ion, isistimu inquma ngokuzenzakalelayo ukushaja noma ukuthulula isekethe uma ithola ukuthi noma iyiphi i-voltage yebhethri ingaphezu kuka-4.2V noma noma iyiphi i-voltage yebhethri iwe ngaphansi kuka-3.0V.Uma izinga lokushisa lebhethri lidlula izinga lokushisa lokusebenza lebhethri noma i-current idlula amandla okukhipha echibini lebhethri, isistimu iyazinqamula ngokuzenzakalelayo indlela yamanje ukuze kuqinisekiswe ukuphepha kwebhethri nohlelo.

2. Ibhalansi yamandla, yonkeibhethri pack, ngenxa yamabhethri amaningi ochungechungeni, ngemva kokusebenza isikhathi esithile, ngenxa yokungavumelani kwebhethri ngokwayo, ukungahambisani nokushisa okusebenzayo nezinye izizathu, ekugcineni kuzobonisa umehluko omkhulu, kunomthelela omkhulu empilweni yebhethri. ibhethri kanye nokusetshenziswa kohlelo.Ibhalansi yamandla iwukwenza umehluko phakathi kweseli ngalinye ukwenza ukushaja okusebenzayo noma okungenzi lutho noma ukuphathwa kokukhipha, ukuze kuqinisekiswe ukuvumelana kwebhethri, ukwelula impilo yebhethri.Kunezinhlobo ezimbili zebhalansi yokwenziwa kanye nebhalansi esebenzayo embonini.Ibhalansi engenzi lutho ngokuyinhloko iwukulinganisa inani lamandla ngokusebenzisa ukumelana, kuyilapho ibhalansi esebenzayo iwukudlulisa inani lamandla lisuka kubhethri liye kubhethri ngamandla amancane nge-capacitor, inductor noma i-transformer.Ukulingana okwenziwayo nokusebenzayo kuqhathaniswa kuthebula elingezansi.Ngenxa yokuthi isistimu yokulinganisa esebenzayo iyinkimbinkimbi uma kuqhathaniswa futhi izindleko ziphezulu uma kuqhathaniswa, okujwayelekile kusewukulinganisa okwenziwayo.

3. Isibalo se-SOC,amandla ebhethriUkubala kuyingxenye ebaluleke kakhulu ye-BMS, amasistimu amaningi adinga ukwazi ngokunembe kakhudlwana isimo samandla esisele.Ngenxa yokuthuthukiswa kobuchwepheshe, ukubala kwe-SOC kuqoqwe izindlela eziningi, izidingo zokunemba aziphezulu zingasuselwa ku-voltage yebhethri ukwahlulela amandla asele, indlela eyinhloko enembayo indlela yamanje yokuhlanganisa (eyaziwa nangokuthi indlela ka-Ah), Q = ∫i dt, kanye nendlela yokumelana kwangaphakathi, indlela yenethiwekhi ye-neural, indlela yokuhlunga ye-Kalman.Ukushaya amagoli kwamanje kuseyiyona ndlela ehamba phambili embonini.

4. Ukuxhumana.Amasistimu ahlukene anezidingo ezahlukene zezindawo zokuxhumana.Izixhumanisi zokuxhumana ezijwayelekile zifaka i-SPI, I2C, CAN, RS485 njalonjalo.Amasistimu okugcina izimoto namandla ikakhulukazi i-CAN ne-RS485.