Wake wazibuza ukuthi kanjani aI-BMSingakwazi ukubona umthamo wamanje wephakethe lebhethri le-lithium? Ingabe ikhona i-multimeter eyakhelwe kuyo?
Okokuqala, kunezinhlobo ezimbili ze-Battery Management Systems (BMS): izinguqulo ezihlakaniphile nezehadiwe. I-smart BMS kuphela enekhono lokudlulisa ulwazi lwamanje, kuyilapho inguqulo yehadiwe ayinakho.
I-BMS ivamise ukuba nesekhethi edidiyelwe yokulawula (IC), amaswishi e-MOSFET, amasekhethi okuqapha amanje, namasekhethi okuqapha izinga lokushisa. Ingxenye eyinhloko yenguqulo ehlakaniphile i-IC yokulawula, esebenza njengobuchopho besistimu yokuvikela. Inesibopho sokuqapha ngesikhathi sangempela ibhethri lamanje. Ngokuxhuma nesekhethi yamanje yokuqapha, i-IC yokulawula ingathola ngokunembile ulwazi mayelana namandla ebhethri. Uma i-current idlula imikhawulo yokuphepha emisiwe, i-IC yokulawula yenza isinqumo ngokushesha futhi icuphe izenzo zokuvikela ezihambisanayo.
Ngakho-ke, itholakala kanjani okwamanje?
Ngokuvamile, inzwa ye-Hall effect isetshenziselwa ukuqapha okwamanje. Le nzwa isebenzisa ubudlelwano phakathi kwezinkundla kazibuthe kanye nezamanje. Lapho okwamanje kugeleza, inkambu kazibuthe ikhiqizwa eduze kwenzwa. Inzwa ikhipha isignali ye-voltage ehambisanayo ngokusekelwe kumandla wenkundla kazibuthe. Uma i-IC yokulawula ithola le siginali ye-voltage, ibala usayizi wamanje wangempela isebenzisa ama-algorithms angaphakathi.
Uma i-current idlula inani lokuphepha elisethiwe, elifana ne-overcurrent noma i-short-circuit current, i-IC yokulawula izolawula ngokushesha amaswishi e-MOSFET ukuze inqamule indlela yamanje, ivikele kokubili ibhethri kanye nayo yonke isistimu yesekethe.
Ukwengeza, i-BMS ingase isebenzise ezinye izinto eziphikisayo nezinye izingxenye ukusiza ekuqapheni kwamanje. Ngokulinganisa ukwehla kwamandla kagesi ku-resistor, usayizi wamanje ungabalwa.
Lolu chungechunge lwemiklamo eyinkimbinkimbi nenembayo yesekethe nezindlela zokulawula zonke zihloselwe ukuqapha amandla ebhethri ngenkathi zivikela ezimeni ezidlulele. Badlala indima ebalulekile ekuqinisekiseni ukusetshenziswa okuphephile kwamabhethri e-lithium, ukwelula impilo yebhethri, kanye nokuthuthukisa ukwethembeka kwalo lonke uhlelo lwebhethri, ikakhulukazi ezinhlelweni ze-LiFePO4 nezinye izinhlelo zochungechunge lwe-BMS.
Isikhathi sokuthumela: Oct-19-2024
