Uhlelo lokuphathwa kwebhethri (i-BMS) lidlala indima ebalulekile ekuqinisekiseni ukusebenza okuphephile nokusebenzayo kwamabhethri e-lithium-ion, kufaka phakathi amabhethri e-LFP nama-ternary lithium (NCM / NCA). Injongo yayo eyinhloko ukuqapha kanye nokulawula amapharamitha ebhethri ahlukahlukene, njengamandla kagesi, lokushisa, kanye namanje, ukuqinisekisa ukuthi ibhethri lisebenza ngaphakathi kwemingcele ephephile. I-BMS iphinde ivikele ibhethri ekubeni inqubekela phambili, ikhishwe ngaphezulu, noma isebenza ngaphandle uhla lwamazinga okushisa afanele. Kumaphakethe webhethri anochungechunge oluningi lwamaseli (izintambo zebhethri), i-BMS ilawula ukulinganiselwa kwamaseli ngamanye. Lapho i-BMS yehluleka, ibhethri lishiywe sengozini, futhi imiphumela ingaba nzima.
1. Ukudlula ngokweqile noma ukukhishwa ngokweqile
Eminye yemisebenzi ebucayi kakhulu ye-BMS ukuvikela ibhethri ukuthi lishiswe ngokweqile noma likhishwe ngaphezulu. Ukweqiwa ngokweqile kuyingozi ikakhulukazi kumabhethri anobunzima obukhulu njengeTernary Lithium (NCM / NCA) ngenxa yokuba semaphukule ekubalekeni okushisayo. Lokhu kwenzeka lapho i-voltage yebhethri idlula imikhawulo ephephile, ukukhiqiza ukushisa okwedlulele, okungaholela ekuqhumeni noma ngomlilo. Ngakolunye uhlangothi-ukudilizwa, kungadala ukulimala okungapheli kumaseli, ikakhulukazi kumabhethri e-LFP, anganciphisa umthamo futhi abonise ukusebenza kabi ngemuva kokukhishwa okujulile. Kuzo zombili izinhlobo, ukwehluleka kwe-BMS ukulawula ama-voltage ngesikhathi sokushaja nokukhipha kungaphumela ekulimaleni okungenakuphikwa kwiphakethe lebhethri.
2. Ukushisa ngokweqile kanye nokubaleka okushisayo
Amabhethri we-ternary lithium (NCM / NCA) azwela kakhulu amazinga okushisa aphezulu, amabhethri amaningi we-thanlfp, ezaziwa ngokuqina okungcono okushisayo. Kodwa-ke, zombili lezi zinhlobo zidinga ukuphathwa kokushisa ngokucophelela. I-BMS esebenzayo iqapha izinga lokushisa lebhethri, liqinisekise lihlala ngaphakathi kwebanga eliphephile. Uma i-BMS yehluleka, ukucwilisa ngokweqile kungenzeka, kubangele ukusabela kwe-chain okuyingozi okubizwa ngokuthi yi-thermaway runaway. Ephaketheni lebhethri elihlanganiswe nochungechunge lwamaseli (izintambo zebhethri), ukugijima okushisayo kungasakazeka ngokushesha kusuka esitokisini esisodwa kuya kokulandelayo, okuholela ekuhlulekeni okuyinhlekelele. Okwezinhlelo zokusebenza eziphakeme ezifana nezimoto zikagesi, le ngozi ikhulisiwe ngoba ukuqina kwamandla nokubala kwamaseli kuphezulu kakhulu, kukhulisa amathuba emiphumela emibi.
3. Ukungalingani phakathi kwamaseli ebhethri
Kumaphakethe ebhethri le-multi-cell cell, ikakhulukazi lezo ezinokucushwa okuphezulu kwamandla kagesi ezifana nezimoto zikagesi, ukulinganisa amavoluka phakathi kwamaseli kubalulekile. I-BMS inesibopho sokuqinisekisa ukuthi wonke amaseli ephakethe ayalingana. Uma i-BMS yehluleka, amanye amaseli angagcwala ngokweqile kanti amanye ahlale engaphansi. Kuzinhlelo ezinezintambo eziningi zebhethri, lokhu kungalingani akukunciphisi nje kuphela kepha kubeka nengozi yokuphepha. Amangqamuzana angaphezulu komhlaba ikakhulukazi asengozini yokushisa ngokweqile, okungabangela ukuba bahluleke ngokwenhlekelele.
4. Ukulahleka kokuqapha kanye nokungena kwedatha
Kuzinhlelo eziyinkimbinkimbi zebhethri, ezinjengezitoreji zamandla noma ezimotweni zikagesi, i-BMS ziqapha ukusebenza kwebhethri, idatha yokungena ngemvume kwimijikelezo yokushaja, ama-voltage, lokushisa, kanye nezempilo yeselula yomuntu ngamunye. Lolu lwazi lubalulekile ekuqondeni impilo yamaphakethe ebhethri. Lapho i-BMS yehluleka, lokhu kuqapha okubucayi kuyama, okwenza kube nzima ukulandelela ukuthi amaseli asebenza kahle kanjani. Ngezinhlelo zebhethri eziphakeme ezinochungechunge lwamaseli amaningi, ukungakwazi ukuqapha impilo yeselula kungaholela ekwehlulekeni okungalindelekile, njengokulahleka kwamandla okungazelelwe noma ukwehla kwamandla okushisekelayo noma imicimbi eshisayo.
5. Ukwehluleka kwamandla noma ukusebenza okuncishisiwe
I-BMS ehlulekile ingaphumela ekunciphiseni kahle noma ukwehluleka kwamandla okuphelele. Ngaphandle kokuphathwa okufanele kweamandla kagesi, izinga lokushisa, kanye nokulinganisa iseli, uhlelo lungavala ukuvikela ukulimala okwengeziwe. Kuzinhlelo zokusebenza laphoizintambo zebhethri eziphakemebayabandakanyeka, njengezimoto zikagesi noma isitoreji samandla ezimboni, lokhu kungaholela ekulahlekelweni okungazelelwe kwamandla, kuveze izingozi ezibalulekile zokuphepha. Isibonelo, aternary lithiumI-Battery Pack ingavala ngokungazelelwe ngenkathi imoto kagesi ihamba, idale izimo eziyingozi zokushayela.
Isikhathi sePosi: Sep-11-2024
