Kuyini ukusebenza kokukhipha?
Ukukhipha ukusebenza
Ukuzikhulula{0}}
Ukuzikhipha-kubhekisela kwinto lapho amandla ebhethri asebenzisekayo ehla ngokuzenzakalelayo ngenxa yokusabela okuzenzakalelayo noma okungahlosiwe kwamakhemikhali ngaphakathi kwebhethri. Ngokuyinhloko kuhilela ukusabela kwe-redox okuzenzakalelayo ezintweni ze-electrode. Kula ma-electrode amabili, i-electrode eyinegethivu ihlangabezana kakhulu-nokukhishwa kwayo, okumosha izinto ezisebenzayo. Ukuzikhipha kwebhethri{5}}kuhlobene eduze nezimo zesitoreji sebhethri.
Isilinganiso sokuzikhulula{0}
-Izinga lokuzikhipha ngokwakho lisho izinga lapho ibhethri lilahlekelwa khona umthamo lapho lizikhulula ngaphansi{1}}kwezimo ezingalayishiwe phakathi nesitoreji. Izinga lokuzikhulula{3} liboniswa njengephesenti lokunciphisa umthamo webhethri ngesikhathi seyunithi ngayinye (inyanga noma unyaka).
Kufomula, u-Ahₐ umele umthamo webhethri phakathi nesitoreji (A·h);
U-Ah_b umele umthamo webhethri ngemva kokugcinwa (A·h);
t imele isikhathi sokulondoloza ibhethri (izinyanga noma iminyaka).
Izinga lokuzikhulula{0}lonke ngokuvamile lihlobene nesikhathi nezinga lokushisa le-ambient. Uma izinga lokushisa le-ambient liphezulu, kulapho kuphumela khona ngokwengeziwe-ukwenzeka kokuzikhulula. Ngakho-ke, amabhethri kufanele ashajwe kabusha ngezikhathi ezithile lapho egcinwe isikhathi eside futhi agcinwe ngaphansi kwezimo ezifanelekile zokushisa kanye nomswakama.
Ukujula Kokukhipha
Ukujula Kokukhipha (i-DOD) iphesenti lamandla okukhipha kumthamo olinganiselwe, futhi ubudlelwano bayo bezibalo ne-State of Charge (SOC) bumi kanje:
DOD=1-S0C
Ukujula kokukhipha kunomthelela omkhulu kubude bempilo yebhethri lesibili. Ngokuvamile, lapho kujula ukujula kokukhipha kwebhethri lesibili, kulapho ukuphila kwalo kufushane khona. Ngakho-ke, ukukhishwa okujulile kwamabhethri esibili kufanele kugwenywe ngangokunokwenzeka ngesikhathi sokusebenzisa ibhethri.
Inqubo yokukhipha
Uhlelo lokukhipha lubhekisela ezimweni ezihlukahlukene ezishiwo ngesikhathi sokuphuma kwebhethri, ikakhulukazi okuhlanganisa izinga lokuphuma (okwamanje), ugesi wokunqanyulwa, kanye nezinga lokushisa.
(1) Amandla okukhipha amandla Amanje okukhiphayo abhekisela kubukhulu bamanje ngesikhathi sokuphuma kwebhethri. Ubukhulu bamanje bokuphuma buthinta ngokuqondile izinkomba ezihlukahlukene zokusebenza kwebhethri. Ngakho-ke, lapho wethula umthamo webhethri noma amandla, ubukhulu bamanje bokuphuma kanye nemibandela yokukhipha kufanele kucaciswe. Amandla okukhipha ngokuvamile achazwa njengezinga lokuphuma, okubhekisela esilinganisweni ibhethri eliphuma ngalo. Ingavezwa ngezindlela ezimbili: isilinganiso sesikhathi kanye nezinga lokuphindaphinda.
Izinga lesikhathi izinga lokukhipha elivezwa ngesikhathi sokukhipha (h), okungukuthi, isikhathi (h) esidingekayo ukuze ukhiphe umthamo olinganiselwe ngesikhathi sokukhipha okuthile. Ivamise ukuvezwa njengo-C/n, lapho u-C engumthamo olinganisiwe futhi u-n ungumthombo othile wokukhipha. Isilinganiso sesikhathi sibizwa nangokuthi isilinganiso sehora. Isibonelo, uma umthamo olinganiselwe webhethri ungu-50A·h, futhi liphuma ngamandla angu-5A, isilinganiso sesikhathi singu-50A·h/5A=10h, futhi ibhethri kuthiwa liphuma ngenani lamahora angu-10. Njengoba kungabonakala endleleni yokubala, isikhathi esifushane esimelelwe izinga lokukhipha, sikhulu umthamo wokukhipha odingekayo; ngokuphambene, isikhathi eside esimelelwa izinga lokuphuma, sincane umthamo wokukhipha odingekayo.
Izinga lokukhipha empeleni lisho okukhiphayo kwamanje ngebhethri uma ikhipha umthamo wayo olinganiselwe phakathi nesikhathi esishiwo. Ngenombolo ilingana nokuphindaphinda komthamo olinganiselwe. Isibonelo, izinga lokukhishwa kwe-3C lisho ukuthi amandla okukhipha aphindwe kathathu kunomthamo olinganiselwe. Uma umthamo webhethri ungu-15A·h, amandla okukhipha kufanele abe...
Ngokwejwayelekile, amazinga okukhishwa angaphansi kuka-1/3C abhekwa njengesilinganiso esiphansi-, isilinganiso esingu-1/3C ukuya ku-3C esimaphakathi-nesilinganiso, futhi ngaphezu kuka-3C sinesilinganiso esiphezulu-.
(2) Ukunqanyulwa kokukhishwa Ivoltheji yokunqamula ukuchithwa ihlobene ngokuqondile nezinto zebhethri futhi ithintwa izici ezihlukahlukene ezifana nesakhiwo sebhethri, izinga lokuphuma, kanye nezinga lokushisa elizungezile. Ngokuvamile, ngesikhathi esiphansi-izinga lokushisa eliphansi,{3}}lokuphuma okuphezulu{3}kwamanje, i-electrode polarization iphezulu, izinto ezisebenzayo azikwazi ukusetshenziswa ngokugcwele, futhi amandla ogesi ebhethri ehla ngokushesha. Ngakho-ke, i-voltage yokuqeda ingacaciswa iphansi phakathi-nezinga lokushisa eliphansi noma eliphezulu-lamanje ({7}}eliphezulu) lokuphuma. Ngesikhathi sokukhishwa okuphansi{{9}kwamanje, i-electrode polarization iphansi, izinto ezisebenzayo zingasetshenziswa ngokugcwele, futhi ugesi wokunqamula ungashiwo uphakeme.
Ngaphezu kwezinkomba zokusebenza eziyinhloko ezingenhla, ibhethri liyadingeka futhi ukuthi lingabi-elinobuthi, lingabangeli ukungcola noma ukugqwala endaweni ezungezile, liphephe ukusetshenziswa, libe nokusebenza kahle kokushaja kanye nokusebenza kahle kokushaja, likwazi ukumelana nokudlidliza{1}}likwazi ukumelana nokudlidliza, lingabi nomthelela wenkumbulo, lingakwazi ukuzwela izinguquko kuzinga lokushisa elizungezile, futhi kube lula ukulungisa nokunakekela.
