Ingemuva lephrojekthi yebhethri ye-lithium ion

  Lithium-ion battery is an indispensable energy storage product that drives human modern life, Lithium ion batteries are indispensable for daily communication, energy storage, household appliances, electric vehicles, electric ships, etc. And in special applications such as military, deep sea, and mining, lithium-ion batteries are characterized by their high energy density, long service life, and superior safety performance, Widely replaced the traditional lead-acid batteries, nickel-metal hydride batteries and other previous generation products.

Amabhethri e-lithium-ion ayimboni edinga ubuchwepheshe obukhulu,Ukuthuthukiswa kwale mboni nakho kungaqhubeza ngenkuthalo ukuthuthukiswa kwezimboni zezwe zokukhiqiza nezimpahla zokwakha. Ubuchwepheshe be-membrane obuthuthukisiwe, ubuchwepheshe bomugqa wokuhlanganisa othomathikhi, indawo ephansi yamazolo kanye nobuchwepheshe bomoya ohlanzekile ophezulu kanye nemishini ehambisanayo esetshenziswa enqubweni eyinhloko yokwenziwa kwebhethri ye-lithium ion, Inesiqondiso esihle nendima yokubonisa ekuthuthukisweni kobunye ubuchwepheshe bezimboni kanye nemishini. Izinto ezisetshenziswa kumabhethri e-lithium-ion zingahlanganiswa nensimbi yendawo yethusi, i-cobalt ore kanye ne-graphite ore ukuze kucutshungulwe ngokujulile kucwecwe lwethusi oluncane kakhulu lwamabhethri e-lithium-ion, i-lithium cobaltate (i-lithium nickel cobalt manganate) izinto ze-cathode, kanye ne-high- amandla graphite anode materials.

Nakuba amabhethri e-lithium-ion okwamanje ewuhlobo oluthandwa kakhulu lwebhethri, ngokuthuthuka kobuchwepheshe, kunezinhlobo eziningi zamabhethri e-lithium-ion, ngalinye linezinzuzo zalo kanye nokubi. Kodwa-ke, sekukonke, amabhethri e-lithium-ion anezinzuzo ezilandelayo ezivamile kanye nokubi:

1. Izinzuzo zamabhethri e-lithium-ion.

(1) I-voltage ephezulu: I-voltage esebenzayo yebhethri elilodwa ingafinyelela phezulu njenge-3.7-3.8V (i-voltage yeseli ephakeme kakhulu ingashajwa kuze kufike ku-4.2V), okuphindwe kathathu kunamabhethri e-Ni Cd ne-Ni-H.

(2) Amandla athile aphezulu: Okwamanje, amandla athile angafinyelelwa angaba ngu-555Wh/kg, okusho ukuthi impahla ingafinyelela umthamo othize ongaphezu kuka-150mAh/g (3-4 izikhathi ze-Ni Cd, 2-3 izikhathi Ni MH), esondele cishe ku-88% yenani layo lethiyori.

(3) Ukuphila komjikelezo omude: ngokuvamile kungafinyelela izikhathi ezingaphezu kuka-500, noma izikhathi ezingaphezu kuka-1000, futhi i-lithium iron phosphate ingafinyelela izikhathi ezingaphezu kuka-2000. Ukuphila kwamabhethri ezintweni ezikhishwayo zamanje eziphansi kuzophinda kabili ukuncintisana kwawo.

(4) Ukusebenza kahle kokuphepha: akukho kungcola, akukho mphumela wenkumbulo. Njengomanduleli we-Li-ion, amabhethri e-lithium-ion anciphise izindawo zabo zokufaka isicelo ngenxa yokwakhiwa kwama-dendrites nama-circuits amafushane abangelwa i-metallic lithium. I-Li-ion ayinazo izici ezingcolisa imvelo njenge-cadmium, i-lead, ne-mercury. Umphumela omkhulu wamanye amabhethri e-Ni Cd ezinqubweni ezithile (njengokucwilisa) "umphumela wenkumbulo", okhawulela kakhulu ukusetshenziswa kwamabhethri. Nokho, i-Li-ion ayinayo nhlobo le nkinga.

(5) Ukuzikhipha okuphansi: Izinga lokuzikhulula le-Li ion, elishajwa ngokugcwele ekamelweni lokushisa futhi ligcinwe inyanga eyodwa, cishe li-2%, liphansi kakhulu kune-25-30% ye-Ni Cd kanye ne-30-35% ye-Ni kanye ne-MH.

(6) Ukushaja okusheshayo nokushajwa: Umthamo ungafinyelela ngaphezu kwamaphesenti angama-80 womthamo ojwayelekile ngemva kwemizuzu engu-30 yokushajwa, futhi manje amabhethri ensimbi ye-phosphate angafinyelela ku-90% womthamo ovamile ngemva kwemizuzu eyi-10 yokushajwa.

(7) Ibanga lokushisa eliphezulu lokusebenza: Izinga lokushisa elisebenzayo lingu-25 ~ 55 ° C. Ngokuthuthukiswa kwe-electrolyte kanye ne-electrode enhle, kulindeleke ukuthi inwebe ibe -40 ~ 70 ° C.

2. Ukungalungi kwamabhethri e-lithium-ion

(1) Ukuguga: Ngokungafani namanye amabhethri aphinde ashajwe, amandla amabhethri e-lithium-ion azokwehla kancane kancane, ngaphandle kwenani lokusetshenziswa, kodwa ahlobene nezinga lokushisa. Indlela engenzeka ukuthi ukumelana kwangaphakathi kuyanda kancane kancane, ngakho-ke kungenzeka ukuthi kubonakale emikhiqizweni ye-elekthronikhi enemisinga ephezulu yokusebenza. Ukushintsha i-graphite nge-lithium titanate kubonakala kwandisa isikhathi sokuphila.

(2) Ukungakwazi ukuthwala ukushaja ngokweqile: Ngesikhathi sokushajwa ngokweqile, i-lithium ion eshumekwe ngokweqile izolungisa unomphela ku-lattice futhi ayikwazi ukukhululwa, okungaholela ekuphileni okufushane kwebhethri nokukhiqizwa kwegesi okubangela amabhamuza egesi.

(3) Ukungakwazi ukumelana nokukhishwa okungaphezu kokukhishwa: Ngesikhathi sokukhishwa ngokweqile, ama-ion e-lithium amaningi akhishwa ku-electrode, okungabangela ukuwa kwe-lattice, kufinyeze ubude bokuphila, futhi kubangele ukukhiqizwa kwegesi, okuholela kumabhamuza egesi.

(4) Kudingeka izindlela eziningi zokuvikela: Ngenxa yokuthi ukusetshenziswa okungalungile kunganciphisa isikhathi sokuphila ngisho nokuholela ekuqhumeni, izindlela zokuvikela eziningi zengezwe ekwakhiweni kwamabhethri e-lithium-ion.

Isekhethi yokuvikela: vimbela ukushajwa ngokweqile, ukukhipha ngokweqile, ukugcwala ngokweqile, nokushisa ngokweqile.

Imbobo yokukhipha umoya: ukuvikela ukucindezela okukhulu ngaphakathi kwebhethri.

Izici ze-diaphragm: Inokumelana nokubhoboza okuphezulu ukuvimbela izifunda ezimfushane zangaphakathi; Uma izinga lokushisa langaphakathi lebhethri liphezulu kakhulu, lisakwazi ukuncibilika, livimbele i-lithium ion ukuthi lingadluli, livimbele ukusabela kwebhethri, futhi likhulise ukumelana kwangaphakathi (kufika ku-2kQ).

Kafushane, ukuthuthukiswa kwemboni yebhethri ye-lithium-ion iyimboni enamandla ekhuthaza amazwe asathuthuka emazweni athuthuke kakhulu.