Amabhethri angenye yezingxenye ezibaluleke kakhulu zamasistimu okugcina amandla e-electrochemical. Ngokuncishiswa kwezindleko zebhethri ye-lithium kanye nokwenza ngcono ukuminyana kwamandla ebhethri ye-lithium, ukuphepha nempilo yokuphila, ukugcinwa kwamandla nakho kungenise izinhlelo zokusebenza ezinkulu. Lesi sihloko sizokusiza uqonde isitoreji samandla Amapharamitha ambalwa abalulekile weibhethri ye-lithium.
01
umthamo webhethri ye-lithium
ibhethri ye-lithiumumthamo ungenye yezinkomba zokusebenza ezibalulekile zokulinganisa ukusebenza kwebhethri ye-lithium. Umthamo webhethri ye-lithium uhlukaniswe umthamo olinganiselwe kanye nomthamo wangempela. Ngaphansi kwezimo ezithile (isilinganiso sokukhipha, izinga lokushisa, i-voltage yokunqanyulwa, njll.), inani likagesi elikhishwe ibhethri ye-lithium libizwa ngokuthi umthamo olinganiselwe (noma umthamo we-Nominal). Amayunithi ajwayelekile omthamo yi-mAh ne-Ah=1000mAh. Ukuthatha i-48V, 50Ah ibhethri ye-lithium njengesibonelo, umthamo webhethri ye-lithium ngu-48V×50Ah=2400Wh, okungamahora angu-2.4 kilowatt.
02
izinga lokukhishwa kwebhethri le-lithium C
I-C isetshenziselwa ukukhombisa ukushaja kwebhethri ye-lithium kanye nesilinganiso somthamo wokuphuma. Izinga lokushaja nokukhipha = ukushaja nokukhipha umthamo wamanje/okaliwe. Isibonelo: uma ibhethri le-lithium elinomthamo olinganiselwe we-100Ah likhishwa ku-50A, izinga lokukhishwa kwalo ngu-0.5C. I-1C, 2C, kanye ne-0.5C yizilinganiso zokukhishwa kwebhethri ye-lithium, okuyisilinganiso sejubane lokukhipha. Uma umthamo osetshenzisiwe ukhishwa ngehora elingu-1, ubizwa ngokuthi ukukhishwa kwe-1C; uma ikhishwa emahoreni ama-2, ibizwa ngokuthi 1/2=0.5C ukukhishwa. Ngokuvamile, umthamo webhethri ye-lithium ungatholwa ngokusebenzisa imisinga ehlukene yokukhipha. Ngebhethri le-lithium engu-24Ah, i-1C yokukhipha yamanje ingu-24A kanye ne-0.5C yokukhipha yamanje yi-12A. Okukhulu ukukhishwa kwamandla. Isikhathi sokukhipha naso sifushane. Ngokuvamile uma ukhuluma ngesilinganiso sesistimu yokugcina amandla, sivezwa ngamandla amakhulu omthamo wesistimu/wesistimu (KW/KWh). Isibonelo, isikali sesiteshi samandla esigcina amandla singu-500KW/1MWh. Lapha i-500KW ibhekisela ekukhokhisweni okuphezulu kanye nokukhishwa kwesistimu yokugcina amandla. Amandla, i-1MWh ibhekisela kumthamo wesistimu wesiteshi sikagesi. Uma amandla ekhishwa ngamandla alinganiselwe angu-500KW, umthamo wesiteshi sikagesi ukhishwa emahoreni ama-2, futhi izinga lokukhishwa ngu-0.5C.
03
SOC (State of charge) isimo sokukhokhisa
Isimo sokushajwa kwebhethri ye-lithium nge-English yi-State of Charge, noma i-SOC ngamafuphi. Ibhekisela esilinganisweni somthamo osele webhethri ye-lithium ngemva kokuba isisetshenziswe isikhathi esithile noma ishiywe ingasetshenziswa isikhathi eside kanye nomthamo wayo esimweni sokushajwa ngokugcwele. Ngokuvamile kuvezwa njengephesenti. Kalula nje, amandla asele ebhethri ye-lithium. amandla.
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I-DOD (Ukujula Kokukhipha) ukujula kokukhipha
Ukujula Kokukhipha (i-DOD) kusetshenziselwa ukukala iphesenti phakathi kokukhishwa kwebhethri ye-lithium kanye nomthamo olinganiselwe webhethri le-lithium. Ngebhethri ye-lithium efanayo, ukujula kwesethi ye-DOD kuhambisana ngokuphambene nempilo yomjikelezo webhethri ye-lithium. Ukujula kokujula kokukhipha, kuba mfushane impilo yomjikelezo webhethri ye-lithium. Ngakho-ke, kubalulekile ukulinganisela isikhathi sokusebenza esidingekayo sebhethri ye-lithium nesidingo sokunweba impilo yomjikelezo webhethri ye-lithium.
Uma ukuguqulwa kwe-SOC kusuka ekungenalutho ngokuphelele kuya ekushajweni ngokugcwele kubhalwe njenge-0 ~ 100%, ngakho-ke ekusebenzeni okungokoqobo, kungcono ukwenza ibhethri ye-lithium ngayinye isebenze ebangeni lika-10% ~ 90%, futhi kungenzeka ukusebenza ngezansi. 10%. Izokhishwa ngokweqile futhi kuzokwenzeka ukusabela kwamakhemikhali okungabuyiseleki emuva, okuzothinta impilo yebhethri ye-lithium.
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I-SOH (Isimo Sezempilo) isimo sempilo yebhethri ye-lithium
I-SOH (Isimo Sezempilo) ikhombisa ikhono lebhethri le-lithium lamanje lokugcina amandla kagesi ngokuhlobene nebhethri elisha le-lithium. Kubhekiselwa esilinganisweni samandla ebhethri ye-lithium yamanje eshaja ngokugcwele kumandla ebhethri entsha ye-lithium. Incazelo yamanje ye-SOH ibonakala ngokuyinhloko ezicini eziningana ezifana nomthamo, ugesi, ukumelana kwangaphakathi, izikhathi zomjikelezo namandla aphezulu. Amandla namandla yikhona okusetshenziswa kakhulu.
Ngokuvamile, lapho umthamo webhethri ye-lithium (SOH) wehla wafinyelela cishe ku-70% kuya ku-80%, ungabhekwa njengofinyelele ku-EOL (ekupheleni kwempilo yebhethri ye-lithium). I-SOH iyinkomba echaza isimo samanje sezempilo sebhethri ye-lithium, kuyilapho i-EOL ibonisa ukuthi ibhethri ye-lithium isifinyelele ekupheleni kokuphila. Idinga ukushintshwa. Ngokuqapha inani le-SOH, isikhathi sokuthi ibhethri ye-lithium ifinyelele ku-EOL singabikezelwa futhi ukugcinwa nokuphathwa okuhambisanayo kungenziwa.
Isikhathi sokuthumela: May-08-2024
