Ukuhlaziywa Kokonakaliswa Kwebhethri Le-Lithium-Ion Yezentengiso Kusitoreji Sesikhathi Eside. Amabhethri e-lithium-ion asebaluleke kakhulu ezimbonini eziningi ngenxa yokuminyana kwawo okuphezulu nokusebenza kahle kwawo. Nokho, ukusebenza kwazo kuyawohloka ngokuhamba kwesikhathi, ikakhulukazi phakathi nenkathi yokulondoloza enwetshiwe. Ukuqonda izindlela nezici ezinomthelela kulokhu kucekelwa phansi kubalulekile ukuze kuthuthukiswe ubude bebhethri kanye nokukhulisa ukusebenza kahle kwazo. Lesi sihloko sicubungula ekuhlaziyweni kokucekelwa phansi kwamabhethri e-lithium-ion okuthengisa kwisitoreji sesikhathi eside, enikeza amasu asebenzayo okunciphisa ukwehla kokusebenza nokwelula impilo yebhethri.
Izindlela Zokwehliswa Okubalulekile:
Ukuzikhipha
Ukusabela kwamakhemikhali kwangaphakathi ngaphakathi kwamabhethri e-lithium-ion kubangela ukulahlekelwa amandla kancane kancane ngisho nalapho ibhethri lingenzi lutho. Le nqubo yokuzikhipha, nakuba ngokuvamile ihamba kancane, ingasheshiswa amazinga okushisa esitoreji aphakeme. Isizathu esiyinhloko sokuzikhipha ngokwakho ukusabela ohlangothini olubangelwa ukungcola ku-electrolyte kanye nokukhubazeka okuncane ezintweni ze-electrode. Nakuba lokhu kusabela kuqhubeka kancane ekamelweni lokushisa, izinga lakho liphindeka kabili njalo ngo-10°C onyuka izinga lokushisa. Ngakho-ke, ukugcina amabhethri emazingeni okushisa aphezulu kunalawo anconyiwe kungakhuphula kakhulu izinga lokuzikhulula, okuholela ekuncipheni okukhulu komthamo ngaphambi kokusetshenziswa.
Ukusabela kwe-Electrode
Ukusabela okusemaceleni phakathi kwe-electrolyte nama-electrode kubangela ukwakheka kongqimba oluqinile lwe-electrolyte interface (SEI) kanye nokuwohloka kwezinto ezisetshenziswayo ze-electrode. Isendlalelo se-SEI sibalulekile ekusebenzeni okujwayelekile kwebhethri, kodwa emazingeni okushisa aphezulu, siyaqhubeka nokushuba, sisebenzisa i-lithium ion kusuka ku-electrolyte futhi sandise ukumelana kwangaphakathi kwebhethri, ngaleyo ndlela sinciphise umthamo. Ngaphezu kwalokho, amazinga okushisa aphezulu angenza ukuthi ukwakheka kwezinto ze-electrode kungenzeki, kubangele ukuqhekeka nokubola, kuqhubeke kuncipha ukusebenza kahle kwebhethri nempilo yokuphila.
Ukulahleka kwe-lithium
Phakathi nemijikelezo yokushaja, amanye ama-ion e-lithium avaleleka unomphela esakhiweni se-lattice se-electrode, okuwenza angatholakaleli ukusabela okuzayo. Lokhu kulahlekelwa kwe-lithium kwenziwa kubi kakhulu emazingeni okushisa aphezulu esitoreji ngoba amazinga okushisa aphezulu akhuthaza ama-ion e-lithium amaningi ukuthi ashumekwe ngendlela engenakulungiseka kumaphutha e-lattice. Ngenxa yalokho, inani lama-ion e-lithium atholakalayo liyehla, okuholela ekufiphaleni kwamandla kanye nempilo yomjikelezo omfushane.
Izici Ezithinta Izinga Lokuwohloka
Izinga lokushisa lesitoreji
Izinga lokushisa liyisici esiyinhloko sokuwohloka kwebhethri. Amabhethri kufanele agcinwe endaweni epholile, eyomile, ephakathi kuka-15°C kuya ku-25°C, ukuze kubambezeleke inqubo yokuwohloka. Amazinga okushisa aphezulu asheshisa amazinga okusabela kwamakhemikhali, ukwandisa ukuzikhulula kanye nokwakheka kongqimba lwe-SEI, ngaleyo ndlela kusheshisa ukuguga kwebhethri.
Isimo senkokhelo (SOC)
Ukugcina ingxenye ye-SOC (engaba ngu-30-50%) ngesikhathi sokulondoloza kunciphisa ingcindezi ye-electrode futhi kunciphisa izinga lokuzikhipha ngokwakho, ngaleyo ndlela kunwebe impilo yebhethri. Womabili amazinga e-SOC aphezulu naphansi akhulisa ukucindezeleka kwezinto ze-electrode, okuholela ekushintsheni kwesakhiwo kanye nokusabela okusemaceleni okwengeziwe. Ingxenye ye-SOC ibhalansisa ingcindezi nomsebenzi wokusabela, yehlisa izinga lokuwohloka.
Ukujula kokukhishwa (DOD)
Amabhethri angaphansi kokukhishwa okujulile (i-DOD ephezulu) ehla ngokushesha uma kuqhathaniswa nalawo akhipha amanzi angajulile. Ukukhishwa okujulile kubangela izinguquko ezibaluleke kakhulu zesakhiwo ezintweni ze-electrode, kudala imifantu eminingi kanye nemikhiqizo eseceleni yokusabela, ngaleyo ndlela kwandise izinga lokuwohloka. Ukugwema ukushajwa ngokugcwele amabhethri ngesikhathi sokulondoloza kusiza ukunciphisa lo mphumela, kwelule impilo yebhethri.
Iminyaka yekhalenda
Amabhethri awonakala ngokwemvelo ngokuhamba kwesikhathi ngenxa yezinqubo zemvelo zamakhemikhali nezomzimba. Ngisho nangaphansi kwezimo ezifanele zokugcina, izingxenye zamakhemikhali zebhethri zizobola kancane kancane futhi zehluleke. Izinqubo ezifanele zokugcina zinganciphisa le nqubo yokuguga kodwa azikwazi ukukunqanda ngokuphelele.
Amasu okuhlaziya ukuwohloka:
Isilinganiso sokufiphala kwamandla
Ukulinganisa ngezikhathi ezithile umthamo wokukhipha ibhethri kunikeza indlela eqondile yokulandelela ukuwohloka kwayo ngokuhamba kwesikhathi. Ukuqhathanisa umthamo webhethri ngezikhathi ezihlukene kuvumela ukuhlola izinga lokuwohloka kwalo nezinga, okuvumela izenzo zokulilungisa ngesikhathi.
I-Electrochemical impedance spectroscopy (EIS)
Le nqubo ihlaziya ukumelana kwangaphakathi kwebhethri, inikeze imininingwane enemininingwane mayelana nezinguquko zezakhi ze-electrode ne-electrolyte. I-EIS ingathola izinguquko ekuphazamisekeni kwangaphakathi kwebhethri, isize ukukhomba izimbangela ezithile zokuwohloka, njengokujiya kongqimba lwe-SEI noma ukuwohloka kwe-electrolyte.
Ukuhlaziywa kwesidumbu
Ukuqaqa ibhethri eyonakele nokuhlaziya ama-electrode kanye ne-electrolyte kusetshenziswa izindlela ezifana ne-X-ray diffraction (XRD) kanye ne-electron microscopy (SEM) yokuskena kungadalula izinguquko ezibonakalayo namakhemikhali ezenzeka ngesikhathi sokulondoloza. Ukuhlaziywa kwe-post-mortem kunikeza ulwazi oluningiliziwe mayelana nezinguquko zesakhiwo kanye nesakhiwo ngaphakathi kwebhethri, okusiza ekuqondeni izindlela zokuwohloka nokuthuthukisa ukwakheka kwebhethri namasu okunakekelwa.
Amasu Okunciphisa
Isitoreji esipholile
Gcina amabhethri endaweni epholile, elawulwayo ukuze unciphise ukuzikhipha ngokwawo kanye nezinye izindlela zokuwohloka ezincike kuzinga lokushisa. Okufanelekile, gcina izinga lokushisa elingu-15°C kuya ku-25°C. Ukusebenzisa izinto zokupholisa ezizinikele kanye nezinhlelo zokulawula imvelo kungabambezela kakhulu inqubo yokuguga kwebhethri.
Isitoreji sokushaja ingxenye
Gcina i-SOC eyingxenye (cishe i-30-50%) ngesikhathi sokugcina ukuze unciphise ingcindezi ye-electrode futhi wehlise ukuwohloka. Lokhu kudinga ukusetha amasu afanelekile okushaja ohlelweni lokuphatha ibhethri ukuze kuqinisekiswe ukuthi ibhethri lihlala ngaphakathi kwebanga le-SOC elifanele.
Ukuqapha njalo
Ngasikhathi sinye qapha umthamo webhethri namandla kagesi ukuze uthole izitayela zokuwohloka. Yenza izenzo zokulungisa njengoba kudingeka ngokusekelwe kulokhu kuqashelwa. Ukuqapha okuvamile kungase futhi kunikeze izexwayiso zangaphambi kwesikhathi zezinkinga ezingaba khona, kuvimbele ukwehluleka kwebhethri okungazelelwe phakathi nokusetshenziswa.
Amasistimu okuphatha ibhethri (BMS)
Sebenzisa i-BMS ukuqapha impilo yebhethri, ulawule imijikelezo yokushajwa, futhi usebenzise izici ezifana nokulinganisa amaseli nokulawula izinga lokushisa ngesikhathi sokulondoloza. I-BMS ingathola isimo sebhethri ngesikhathi sangempela futhi ilungise ngokuzenzakalelayo amapharamitha okusebenza ukuze inwebe impilo yebhethri futhi ithuthukise ukuphepha.
Isiphetho
Ngokuziqonda ngokuphelele izindlela zokucekela phansi, izici ezinomthelela, nokusebenzisa amasu okunciphisa asebenzayo, ungathuthukisa kakhulu ukuphathwa kwesitoreji sesikhathi eside samabhethri e-lithium-ion ezentengiso. Le ndlela ivumela ukusetshenziswa kwebhethri okuphelele futhi inwebe impilo yabo yonke, iqinisekise ukusebenza okungcono nokusebenza kahle kwezindleko ezinhlelweni zemboni. Ukuze uthole izixazululo ezithuthukisiwe zokulondoloza amandla, cabanga nge215 kWh Uhlelo Lokugcina Amandla Ezentengiso Nezimboni by Kamada Power.
Xhumana no-Kamada Power
TholaAmasistimu Okugcina Amandla Ezentengiso Nezimboni Ngokwezifiso, Chofoza i-PlsXhumana nathi Kamada Power
Isikhathi sokuthumela: May-29-2024