I-electrode enhle yeamabhethri e-lithium-ioniyi-lithium iron phosphate material, enezinzuzo ezinkulu ekusebenzeni ngokuphepha kanye nempilo yomjikelezo. Lezi zingenye yezinkomba zobuchwepheshe ezibaluleke kakhulu zebhethri lamandla. Ibhethri le-Lifepo4 elinokuphila komjikelezo wokushaja nokukhipha okungu-1C lingafinyelelwa izikhathi ezingu-2000, ukubhoboza akuqhumi, akulula ukusha nokuqhuma uma lishajwa kakhulu. Izinto ze-lithium iron phosphate cathode zenza kube lula ukusebenzisa amabhethri e-lithium-ion amakhulu ochungechungeni.
I-lithium iron phosphate njengezinto ze-cathode
Ibhethri le-Lifepo4 libhekisela ebhethrini le-lithium-ion elisebenzisa i-lithium iron phosphate njengento e-electrode enhle. Izinto ze-electrode ezinhle zamabhethri e-lithium-ion zifaka phakathi i-lithium cobaltate, i-lithium manganate, i-lithium nickelate, izinto ze-ternary, i-lithium iron phosphate, nokunye okunjalo. Phakathi kwazo, i-lithium cobaltate iyinto e-electrode enhle esetshenziswa kumabhethri amaningi e-lithium-ion. Ngokuyisisekelo, i-lithium iron phosphate nayo iyinqubo yokushumeka nokususa i-intercalation. Lesi simiso sifana ne-lithium cobaltate kanye ne-lithium manganate.
izinzuzo zebhethri le-lifepo4
1. Ukushaja okuphezulu kanye nokusebenza kahle kokukhipha ishaja
Ibhethri le-Lifepo4 liyibhethri lesibili le-lithium-ion. Inhloso eyodwa eyinhloko ngamabhethri kagesi. Linezinzuzo ezinkulu ngaphezu kwamabhethri e-NI-MH kanye ne-Ni-Cd. Ibhethri le-Lifepo4 linokushaja okuphezulu futhi likhipha kahle, futhi ukushaja kanye nokusebenza kahle kokukhipha kungafinyelela ngaphezu kuka-90% ngaphansi kwesimo sokukhishwa, kuyilapho ibhethri le-lead-acid lingaba ngu-80%.
2. ukusebenza kahle kwebhethri le-lifepo4
Isibopho se-PO ku-lithium iron phosphate crystal sizinzile futhi kunzima ukubola, futhi asibhidli noma sishise njenge-lithium cobalt noma sakhe into enamandla yokuxilisa ngisho noma izinga lokushisa liphezulu noma i-overcharge, ngakho-ke siphephile kahle. Ekusebenzeni kwangempela, ingxenye encane yesampula itholakale ine-problem evuthayo ekuhlolweni kwe-acupuncture noma kwe-short-circuit, kodwa akukho sigameko sokuqhuma. Ekuhlolweni kwe-overcharge, kwasetshenziswa i-high-voltage charge eyayiphakeme kaningana kune-self-discharge voltage, futhi kwatholakala ukuthi kwakusekhona i-Explosion phenomenon. Noma kunjalo, ukuphepha kwayo kwe-overcharge kuthuthukiswe kakhulu uma kuqhathaniswa nebhethri elijwayelekile le-liquid electrolyte lithium cobalt oxide.
3. Ibhethri le-Lifepo4 liphila isikhathi eside
Ibhethri le-Lifepo4 libhekisela ebhethrini le-lithium-ion elisebenzisa i-lithium iron phosphate njengento e-electrode enhle. Ibhethri le-lead-acid elihlala isikhathi eside linokuphila komjikelezo okungaba izikhathi ezingu-300, kanti eliphakeme kakhulu liyizikhathi ezingu-500. Ibhethri lamandla le-lithium iron phosphate linokuphila komjikelezo okungaphezu kuka-2000, kanti ukushaja okujwayelekile (isilinganiso samahora ama-5) kungasetshenziswa kuze kube izikhathi ezingu-2000. Ibhethri le-lead-acid elisezingeni elifanayo "ukugcinwa nokugcinwa kwengxenye entsha yonyaka, ingxenye endala yonyaka, iminyaka eyisithupha", kuze kube yiminyaka engu-1 ~ 1.5, kanti ibhethri le-lifepo4 lisetshenziswa ngaphansi kwezimo ezifanayo, impilo yethiyori izofinyelela eminyakeni engu-7 ~ 8. Uma ubheka ngokuphelele, isilinganiso sentengo yokusebenza ngokwethiyori singaphezu kokuphindwe kane kunamabhethri e-lead-acid. Ukukhishwa kwamandla aphezulu kungashajwa ngokushesha futhi kukhishwe ngamandla aphezulu angu-2C. Ngaphansi kweshaja ekhethekile, ibhethri lingashajwa ngokugcwele kungakapheli imizuzu eyi-1.5 yokushaja okungu-1.5C, kanti amandla okuqala angafinyelela ku-2C, kodwa ibhethri le-lead-acid alinawo amandla anjalo.
4. Ukusebenza kahle kwezinga lokushisa
Izinga lokushisa eliphakeme kakhulu le-lithium iron phosphate lingafinyelela ku-350 ° C -500 ° C kuyilapho i-lithium manganate kanye ne-lithium cobalttate zingaba ngu-200 ° C kuphela. Izinga lokushisa elibanzi lokusebenza (-20C–+75C), elinokumelana nokushisa okuphezulu, izinga lokushisa likagesi le-lithium iron phosphate lingafinyelela ku-350 ° C-500 ° C, kuyilapho i-lithium manganate kanye ne-lithium cobalt oxide zingaba ngu-200 ° C kuphela.
5. Ibhethri le-Lifepo4 Umthamo ophezulu
Inamandla amakhulu kunebhethri elivamile (i-lead-acid, njll.). Amandla e-monomer angu-5AH-1000AH.
6. Akukho mphumela wememori
Amabhethri aphinde ashajwe asebenza ngaphansi kwezimo ezivame ukungakhishwa ngokugcwele, futhi umthamo uzokwehla ngokushesha ngaphansi komthamo olinganisiwe. Lesi simo sibizwa ngokuthi umphumela wememori. Imemori efana namabhethri e-nickel-metal hydride namabhethri e-nickel-cadmium, kodwa ibhethri le-lifepo4 alinalo lesi simo, kungakhathaliseki ukuthi ibhethri likusiphi isimo, lingasetshenziswa kanye nokushaja, asikho isidingo sokukhipha nokushaja kabusha.7. Ibhethri le-lifepo4 elilula
Ibhethri le-lifepo4 elinomthamo ofanayo wokucaciswa lingu-2/3 womthamo webhethri le-lead-acid, kanti isisindo singu-1/3 webhethri le-lead-acid.
8. Amabhethri e-Lifepo4zinobungani nemvelo
Ibhethri ngokuvamile libhekwa njengelingenazo izinsimbi ezisindayo nezinsimbi ezingavamile (amabhethri e-Ni-MH adinga izinsimbi ezingavamile), angenabo ubuthi (aqinisekiswe yi-SGS), angangcolisi, ngokuhambisana nemithethonqubo ye-European RoHS, isitifiketi sebhethri eliluhlaza ngokuphelele. Ngakho-ke, isizathu sokuthi amabhethri e-lithium athandwa kakhulu embonini ikakhulukazi yizinto ezicatshangelwayo zemvelo. Ngakho-ke, ibhethri lifakiwe ohlelweni lokuthuthukiswa kobuchwepheshe obuphezulu "863" ngesikhathi se-"Tenth Five-Year Plan" futhi seliyiphrojekthi yokuthuthukiswa kokusekela nokukhuthaza eyinhloko kazwelonke. Ngokungena kweShayina kwi-WTO, inani lokuthunyelwa kwamanye amazwe kwamabhayisikili kagesi eShayina lizokhula ngokushesha, futhi amabhayisikili kagesi angena eYurophu nase-United States kudingeka afakwe amabhethri angangcolisi. Ukusebenza kwebhethri le-lithium-ion kuncike kakhulu ezintweni ezinhle nezimbi. I-Lithium iron phosphate iyinto yebhethri le-lithium evele eminyakeni yamuva nje. Ukusebenza kwayo kokuphepha kanye nokuphila komjikelezo akunakulinganiswa nezinye izinto. Izinkomba zobuchwepheshe ezibaluleke kakhulu zebhethri. Ibhethri le-Lifepo4 linezinzuzo zokungangcolisi, ukungangcolisi, ukusebenza kahle kokuphepha, uhla olubanzi lwezinto zokusetshenziswa, amanani aphansi, kanye nokuphila isikhathi eside. Liyi-cathode material efanelekile esizukulwaneni esisha se-amabhethri e-lithium-ion.