Ibhethri ye-LiFePO4

Ibhethri ye-lithium iron phosphate ibhethri ye-lithium-ion esebenzisa i-lithium iron phosphate (LiFePO4) njengento esebenzayo ye-electrode kanye ne-carbon njengento engalungile ye-electrode.
Phakathi nenqubo yokushaja, amanye ama-ion e-lithium ku-lithium iron phosphate akhishwa, adluliselwe ku-electrode engalungile nge-electrolyte, futhi afakwe ku-carbon electrode engalungile;ngesikhathi esifanayo, ama-electron akhululwa ku-electrode enhle futhi afinyelele i-electrode engalungile evela kumjikelezo wangaphandle ukuze kugcinwe ibhalansi yokusabela kwamakhemikhali.Phakathi nenqubo yokukhipha, i-lithium ion ikhishwa ku-electrode engalungile futhi ifinyelele i-electrode enhle nge-electrolyte.Ngesikhathi esifanayo, i-electrode engalungile ikhulula ama-electron futhi ifinyelele i-electrode enhle evela kumjikelezo wangaphandle ukuze inikeze amandla emhlabeni wangaphandle.
Amabhethri e-LiFePO4 anezinzuzo ze-voltage ephezulu yokusebenza, ukuminyana kwamandla aphezulu, impilo yomjikelezo omude, ukusebenza kahle kokuphepha, izinga eliphansi lokuzikhipha futhi akukho mphumela wenkumbulo.
Izici Zesakhiwo Sebhethri
Uhlangothi lwesokunxele lwebhethri ye-lithium iron phosphate i-electrode ephozithivu eyakhiwe ngesakhiwo se-olivine i-LiFePO4 impahla, exhunywe ku-electrode ephozithivu yebhethri nge-aluminium foil.Kwesokudla i-electrode eyinegethivu yebhethri eyakhiwe ngekhabhoni (graphite), exhunywe ku-electrode eyinegethivu yebhethri ngefoyili yethusi.Phakathi nendawo kukhona isihlukanisi se-polymer, esihlukanisa i-electrode enhle ku-electrode engalungile, futhi i-lithium ion ingadlula isihlukanisi kodwa ama-electron awakwazi.Ingaphakathi lebhethri ligcwele i-electrolyte, futhi ibhethri livalwe nge-hermetically casing yensimbi.

Izici zebhethri ye-lithium iron phosphate
Ukuminyana kwamandla aphezulu

Ngokusho kwemibiko, ukuminyana kwamandla we-square aluminium shell lithium iron phosphate mass-ekhiqizwa ngo-2018 cishe ku-160Wh/kg.Ngo-2019, abanye abakhiqizi bebhethri abahle kakhulu bangafinyelela izinga lika-175-180Wh/kg.Ubuchwepheshe be-chip nomthamo kwenziwa kukhudlwana, noma u-185Wh/kg ungafinyelelwa.
ukusebenza kahle kokuphepha
Ukusebenza kwe-electrochemical kwento ye-cathode yebhethri ye-lithium iron phosphate izinzile, okunquma ukuthi inenkundla yokushaja neyokukhipha ezinzile.Ngakho-ke, ukwakheka kwebhethri ngeke kushintshe phakathi nenqubo yokushaja nokukhipha, futhi ngeke ishise futhi iqhume.Kusaphephe kakhulu ngaphansi kwezimo ezikhethekile njengokushaja, ukuminyanisa, nokutshopa.

Impilo yomjikelezo omude

Ukuphila komjikelezo we-1C wamabhethri e-lithium iron phosphate ngokuvamile afinyelela izikhathi ezingu-2,000, noma ngisho nangaphezu kwezikhathi ezingu-3,500, kuyilapho imakethe yokugcina amandla idinga izikhathi ezingaphezu kuka-4,000-5,000, iqinisekisa impilo yesevisi yeminyaka engu-8-10, ephakeme kunemijikelezo eyi-1,000. yamabhethri e-ternary.Impilo yomjikelezo wamabhethri e-lead-acid yempilo ende cishe izikhathi ezingama-300.
Ukusetshenziswa kwemboni yebhethri ye-lithium iron phosphate

Ukusetshenziswa kwemboni yezimoto zamandla amasha

Uhlelo lwezwe lami “Lokonga Amandla kanye Nokuthuthukisa Imboni Yezimoto Ezintsha” luphakamisa ukuthi “umgomo usuwonke wokuthuthukiswa kwezimoto ezintsha zezwe lami uthi: ngo-2020, ukukhiqizwa nokuthengiswa kwezimoto ezintsha ezikhiqiza amandla kuzofinyelela ezigidini ezi-5, futhi izwe lami ezonga ugesi kanye nezinga lemboni yezimoto zamandla amasha zizokleliswa emhlabeni.phambili”.Amabhethri e-lithium iron phosphate asetshenziswa kakhulu ezimotweni zabagibeli, ezimotweni zabagibeli, ezimotweni zezimpahla, izimoto zikagesi ezihamba ngesivinini esiphansi, njll. ngenxa yezinzuzo zazo zokuphepha okuhle nezindleko eziphansi.Ethonywe inqubomgomo, amabhethri e-ternary athatha isikhundla esiphezulu ngenzuzo yokuminyana kwamandla, kodwa amabhethri e-lithium iron phosphate asathatha izinzuzo ezingenakubuyiseleka ezimotweni zabagibeli, ezimotweni zokuthutha kanye neminye imikhakha.Emkhakheni wezimoto zabagibeli, amabhethri e-lithium iron phosphate abalelwa ku-76%, 81%, 78% weqoqo lesi-5, lesi-6, nelesi-7 le- "Catalogue of Recommended Models for the Promotion and Application of New Energy Vehicles" (ngemuva kwalokhu okubizwa ngokuthi “Ikhathalogu”) ngo-2018. %, isagcina okujwayelekile.Emkhakheni wezimoto ezikhethekile, amabhethri e-lithium iron phosphate alinganiselwa ku-30%, 32%, kanye nama-40% weqoqo lesi-5, lesi-6, nelesi-7 le- "Catalogue" ngo-2018, ngokulandelana, futhi ingxenye yezicelo iye yanda kancane kancane. .
U-Yang Yusheng, isazi semfundo ephakeme saseChinese Academy of Engineering, ukholelwa ukuthi ukusetshenziswa kwamabhethri e-lithium iron phosphate emakethe yezimoto zikagesi ezinwetshiwe akukwazi nje ukuthuthukisa ukuphepha kwezimoto, kodwa futhi kusekele ukumakethwa kwezimoto zikagesi ezihamba ibanga elide, ukususa amakhilomitha, ukuphepha, intengo, kanye nezindleko zezimoto ezisebenza ngogesi.Ukukhathazeka mayelana nokushaja, izinkinga zebhethri ezilandelayo, njll. Phakathi nenkathi esukela ku-2007 kuya ku-2013, izinkampani eziningi zezimoto zethule amaphrojekthi ezimoto ezisebenza ngogesi ezihlanzekile ezinwetshiwe.

Qala uhlelo lokusebenza emandleni

Ngaphezu kwezici zamabhethri e-lithium yamandla, ibhethri ye-lithium iron phosphate yokuqala nayo inamandla okukhipha amandla aphezulu ngaso leso sikhathi.Ibhethri elivamile le-lead-acid lithathelwa indawo ibhethri le-lithium lamandla elinamandla angaphansi kwe-kilowatt yehora elilodwa, futhi injini yesiqalisi esivamile nejeneretha kushintshaniswa injini ye-BSG., ayinawo umsebenzi wokumisa idling, kodwa futhi inemisebenzi yokuvalwa kwenjini kanye nogu, i-coasting kanye ne-braking energy recovery, i-acceleration booster kanye ne-electric cruise.

Izicelo emakethe yokugcina amandla

Ibhethri ye-LiFePO4 inochungechunge lwezinzuzo eziyingqayizivele ezifana ne-voltage ephezulu yokusebenza, ukuminyana kwamandla aphezulu, impilo yomjikelezo omude, izinga lokuzikhulula eliphansi, akukho mphumela wenkumbulo, ukuvikelwa kwemvelo okuluhlaza, njll., futhi isekela ukunwetshwa okungenasinyathelo, okulungele ugesi omkhulu. ukugcinwa kwamandla kagesi, eziteshini zamandla kagesi avuselelekayo zinamathuba amahle okufaka isicelo emikhakheni yokuxhumana kwegridi ephephile yokuphehlwa kukagesi, ukulawulwa kwenani eliphakeme legridi yamandla, iziteshi zikagesi ezisabalalisiwe, ukuphakelwa kukagesi kwe-UPS, kanye nezinhlelo zokuphakelwa kwamandla eziphuthumayo.
Ngokombiko wakamuva wokugcina amandla osanda kukhishwa yi-GTM Research, inhlangano yocwaningo lwemakethe yamazwe ngamazwe, ukusetshenziswa kwamaphrojekthi okugcina amandla egridi e-China ngo-2018 kwaqhubeka nokwandisa ukusetshenziswa kwamabhethri e-lithium iron phosphate.
Ngokukhula kwemakethe yokugcina amandla, eminyakeni yamuva, ezinye izinkampani zamabhethri kagesi ziye zafaka ibhizinisi lokugcina amandla ukuze zivule izimakethe zezicelo ezintsha zamabhethri e-lithium iron phosphate.Ngakolunye uhlangothi, ngenxa yezici zempilo yesikhathi eside, ukusetshenziswa okuphephile, umthamo omkhulu, nokuvikelwa kwemvelo okuluhlaza, i-lithium iron phosphate ingadluliselwa emkhakheni wokugcina amandla, okuzonweba uchungechunge lwenani futhi kukhuthaze ukusungulwa kwe imodeli yebhizinisi entsha.Ngakolunye uhlangothi, uhlelo lokugcina amandla olusekela ibhethri ye-lithium iron phosphate sekuyisinqumo esihamba phambili emakethe.Ngokwemibiko, amabhethri e-lithium iron phosphate azanyiwe ukuthi asetshenziswe emabhasini kagesi, amaloli kagesi, ukulawulwa kwefrikhwensi ye-user-side kanye negridi-side.
1. Ukukhiqizwa kwamandla kagesi avuselelekayo njengokuphehla amandla omoya kanye nokukhiqiza amandla e-photovoltaic kuxhunywe ngokuphephile kugridi.Ukungahleliwe okungokwemvelo, izikhawu kanye nokuntengantenga kokukhiqizwa kwamandla omoya kunquma ukuthi ukuthuthukiswa kwawo okukhulu nakanjani kuzoba nomthelela omkhulu ekusebenzeni okuphephile kwesistimu yamandla.Ngokuthuthuka okusheshayo kwemboni yamandla omoya, ikakhulukazi amapulazi omoya amaningi ezweni lami “ayintuthuko enkulu emaphakathi kanye nokudluliswa kwebanga elide”, ukuphehla kukagesi okuxhunywe kwigridi yamapulazi amakhulu omoya kubangela izinselelo ezinkulu ukusebenza nokulawula amagridi amakhulu kagesi.
Ukukhiqizwa kwamandla e-photovoltaic kuthintwa izinga lokushisa elizungezile, ukukhanya kwelanga kanye nezimo zezulu, futhi ukukhiqizwa kwamandla we-photovoltaic kuveza izici zokuguquguquka okungahleliwe.Izwe lami lethula inkambiso yentuthuko “yokuthuthukiswa kohlaka, ukufinyelela endaweni ene-voltage ephansi” kanye “nokuthuthukiswa kwezinga elikhulu, ukufinyelela kwamandla kagesi aphakathi nendawo naphezulu”, okubeka phambili izidingo eziphakeme zokulawula isiqongo segridi kagesi kanye nokusebenza okuphephile kwezinhlelo zikagesi.
Ngakho-ke, imikhiqizo yokugcina amandla amakhulu isibe yisici esibalulekile ekuxazululeni ukungqubuzana phakathi kwegridi kanye nokukhiqizwa kwamandla avuselelekayo.I-lithium iron phosphate yebhethri yesistimu yokugcina amandla inezici zokuguqulwa okusheshayo kwezimo zokusebenza, imodi yokusebenza eguquguqukayo, ukusebenza kahle okuphezulu, ukuphepha nokuvikelwa kwemvelo, kanye nokuqina okuqinile.Inkinga yokulawulwa kwamandla kagesi wendawo, ukuthuthukisa ukwethembeka kokuphehlwa kwamandla kagesi avuselelekayo futhi kuthuthukiswe ikhwalithi yamandla, ukuze amandla avuselelekayo abe ukuphakelwa kukagesi okuqhubekayo nokuzinzile.
Ngokukhula okuqhubekayo komthamo nesikali, kanye nokuvuthwa okuqhubekayo kobuchwepheshe obuhlanganisiwe, izindleko zezinhlelo zokugcina amandla zizoncishiswa nakakhulu.Ngemuva kokuhlolwa kokuphepha nokuthembeka kwesikhathi eside, izinhlelo zokugcina amandla ebhethri ye-lithium iron phosphate kulindeleke ukuthi zisetshenziswe kumandla avuselelekayo njengamandla omoya kanye nokukhiqiza amandla e-photovoltaic.Isetshenziswe kabanzi ekuxhumekeni kwegridi ephephile yokukhiqiza amandla kanye nokuthuthukiswa kwekhwalithi yamandla.
2 igridi yamandla yokulawula ukuphakama.Izindlela eziyinhloko zokulawula ukuphakama kwegridi yamandla bekulokhu kuyiziteshi zikagesi ezimpontshwayo.Ngenxa yokuthi isiteshi sikagesi esimpontshwayo sidinga ukwakha amadamu amabili, amadamu aphezulu nangaphansi, avinjelwa kakhulu izimo zezwe, akulula ukwakha endaweni ethafa, futhi indawo inkulu futhi nezindleko zokuyilungisa ziphezulu.Ukusetshenziswa kwesistimu yokugcina amandla ebhethri ye-lithium iron phosphate esikhundleni sesiteshi samandla esipompayo, ukuze sibhekane nomthwalo ophakeme wegridi yamandla, okunganqunyelwe izimo zendawo, ukukhethwa kwendawo yamahhala, ukutshalwa kwezimali okuncane, ukusebenza kancane komhlaba, izindleko eziphansi zokunakekela, izodlala indima ebalulekile ohlelweni lokulawula ukuphakama kwegridi yamandla.
3 Iziteshi zikagesi ezisabalalisiwe.Ngenxa yokukhubazeka kwegridi enkulu yamandla ngokwayo, kunzima ukuqinisekisa ikhwalithi, ukusebenza kahle, ukuphepha kanye nezidingo zokuthembeka kokunikezwa kwamandla.Kumayunithi namabhizinisi abalulekile, amandla akabili noma amandla amaningi avame ukudingeka njengesipele nokuvikela.Uhlelo lokugcina amandla ebhethri ye-lithium iron phosphate lunganciphisa noma lugweme ukuphuma kukagesi okubangelwa ukwehluleka kwegridi yamandla kanye nezenzakalo ezihlukahlukene ezingalindelekile, futhi liqinisekise ukunikezwa kwamandla okuphephile nokuthembekile ezibhedlela, amabhange, izikhungo zokuyala nokulawula, izikhungo zokucubungula idatha, izimboni zezinto zamakhemikhali nokunemba. izimboni zokukhiqiza.Dlala indima ebalulekile.
4 UPS ukunikezwa kwamandla.Ukuthuthuka okuqhubekayo nokusheshayo komnotho waseShayina kuholele ekwahlukaniselweni kwezidingo zabasebenzisi bakagesi be-UPS, okubangele ukuthi izimboni eziningi kanye namabhizinisi abe nesidingo esiqhubekayo sokuphakelwa kukagesi kwe-UPS.
Uma kuqhathaniswa namabhethri e-lead-acid, amabhethri e-lithium iron phosphate anezinzuzo zokuphila komjikelezo omude, ukuphepha nokuzinza, ukuvikelwa kwemvelo okuluhlaza, kanye nezinga eliphansi lokuzikhulula.izosetshenziswa kabanzi.

Izinhlelo zokusebenza kwezinye izinkambu

Amabhethri e-lithium iron phosphate nawo asetshenziswa kabanzi emkhakheni wezempi ngenxa yokuphila kwawo okuhle komjikelezo, ukuphepha, ukusebenza okuphansi kwezinga lokushisa nezinye izinzuzo.Ngomhla ziyi-10 kuMfumfu, 2018, inkampani yebhethri e-Shandong yenza ukubonakala okuqinile embukisweni wokuqala we-Qingdao Military-Civilian Integration Technology Innovation Achievement, futhi yabonisa imikhiqizo yezempi ehlanganisa -45℃ amabhethri ezempi asezingeni eliphansi kakhulu.