Ma electrode abwino amabatire a lithiamu-ionndi zinthu za lithiamu iron phosphate, zomwe zili ndi ubwino waukulu pakugwira ntchito bwino komanso moyo wa batri. Izi ndi chimodzi mwa zizindikiro zofunika kwambiri zaukadaulo wa batri yamagetsi. Batri ya Lifepo4 yokhala ndi moyo wa 1C wochaja ndi kutulutsa mphamvu imatha kupezeka nthawi 2000, kubowola sikuphulika, sikophweka kuyaka ndi kuphulika ikadzala kwambiri. Zipangizo za lithiamu iron phosphate cathode zimapangitsa mabatire akuluakulu a lithiamu-ion kukhala osavuta kugwiritsa ntchito motsatizana.
Lithium iron phosphate ngati zinthu za cathode
Batire ya Lifepo4 imatanthauza batire ya lithiamu-ion yomwe imagwiritsa ntchito lithiamu iron phosphate ngati chinthu chabwino cha electrode. Zipangizo zabwino za electrode za mabatire a lithiamu-ion zimaphatikizapo lithiamu cobalt, lithiamu manganate, lithiamu nickellate, zinthu za ternary, lithiamu iron phosphate, ndi zina zotero. Pakati pawo, lithiamu cobalt ndi chinthu chabwino cha electrode chomwe chimagwiritsidwa ntchito m'mabatire ambiri a lithiamu-ion. Mwachidule, lithiamu iron phosphate ndi njira yolumikizira ndi kuchotsa zinthu. Mfundo imeneyi ndi yofanana ndi lithiamu cobalt ndi lithiamu manganate.
Ubwino wa batri ya lifepo4
1. Kuchaja kwambiri ndi kutulutsa bwino
Batire ya Lifepo4 ndi batire yachiwiri ya lithiamu-ion. Cholinga chachikulu ndi mabatire amphamvu. Ili ndi ubwino waukulu kuposa mabatire a NI-MH ndi Ni-Cd. Batire ya Lifepo4 ili ndi chaji yambiri ndipo imatulutsa mphamvu, ndipo chaji ndi mphamvu yotulutsa mphamvu imatha kufika pa 90% ngati yatulutsidwa, pomwe batire ya lead-acid ndi pafupifupi 80%.
2. batire ya lifepo4 imagwira ntchito bwino kwambiri
Chigwirizano cha PO mu kristalo ya phosphate ya lithiamu ndi chokhazikika ndipo n'chovuta kuwola, ndipo sichimagwa kapena kutentha ngati lithiamu cobalt kapena kupanga chinthu champhamvu chowonjezera ngakhale kutentha kwambiri kapena kukweza kwambiri, motero chimakhala ndi chitetezo chabwino. Pantchito yeniyeniyo, gawo laling'ono la chitsanzocho linapezeka kuti lili ndi vuto loyaka mu acupuncture kapena short-circuit test, koma palibe chochitika chophulika. Mu kuyesa kwa overcharge, mphamvu yamagetsi yapamwamba yomwe inali yokwera kangapo kuposa mphamvu yodzitulutsa yokha idagwiritsidwa ntchito, ndipo zidapezeka kuti panalibe vuto la Explosion. Komabe, chitetezo chake cha overcharge chakhala bwino kwambiri poyerekeza ndi batri wamba wamadzimadzi wa lithiamu cobalt oxide.
3. Batire ya Lifepo4 imakhala ndi nthawi yayitali yogwira ntchito
Batire ya Lifepo4 imatanthauza batire ya lithiamu-ion yomwe imagwiritsa ntchito lithiamu iron phosphate ngati chinthu chabwino cha electrode. Batire ya lead-acid yokhala ndi moyo wautali imakhala ndi moyo wozungulira pafupifupi nthawi 300, ndipo yapamwamba kwambiri ndi nthawi 500. Batire ya lithiamu iron phosphate yamphamvu imakhala ndi moyo wozungulira wopitilira nthawi 2000, ndipo cholipiritsa chokhazikika (chiwerengero cha maola 5) chingagwiritsidwe ntchito mpaka nthawi 2000. Batire ya lead-acid yamtundu womwewo ndi "kukonza ndi kukonza kwa theka la chaka chatsopano, theka la chaka chakale", mpaka zaka 1 ~ 1.5, ndipo batire ya lifepo4 imagwiritsidwa ntchito pansi pa mikhalidwe yomweyi, moyo wongopeka udzafika zaka 7 ~ 8. Poganizira mokwanira, chiŵerengero cha mtengo wogwirira ntchito ndi choposa kanayi kuposa mabatire a lead-acid. Kutulutsa kwamphamvu kumatha kuchajidwa mwachangu ndikutulutsa ndi 2C yayikulu. Pansi pa chochajira chapadera, batire imatha kuchajidwa mokwanira mkati mwa mphindi 1.5 kuchokera pakuchajidwa kwa 1.5C, ndipo mphamvu yoyambira imatha kufika 2C, koma batire ya lead-acid ilibe magwiridwe antchito otere.
4. Kutentha kwabwino
Kutentha kwakukulu kwa lithiamu iron phosphate kumatha kufika 350 ° C -500 ° C pomwe lithiamu manganate ndi lithiamu cobalttate zili pafupifupi 200 ° C zokha. Kutentha kwakukulu kogwira ntchito (-20C–+75C), komwe kumateteza kutentha kwambiri, kutentha kwa lithiamu iron phosphate yamagetsi kumatha kufika 350 ° C-500 °C, pomwe lithiamu manganate ndi lithiamu cobalt oxide zimafika pa 200 °C zokha.
5. Batire ya Lifepo4 yotha kugwira ntchito bwino
Ili ndi mphamvu yayikulu kuposa mabatire wamba (lead-acid, ndi zina zotero). Mphamvu ya monomer ndi 5AH-1000AH.
6. Palibe zotsatira zokumbukira
Mabatire otha kubwezeretsedwanso amagwira ntchito m'mikhalidwe yomwe nthawi zambiri siimatulutsa kwathunthu, ndipo mphamvu yake imatsika mofulumira kuposa mphamvu yake yoyesedwa. Chochitika ichi chimatchedwa zotsatira za kukumbukira. Mabatire monga nickel-metal hydride ndi nickel-cadmium, koma batire ya lifepo4 ilibe chodabwitsa ichi, mosasamala kanthu kuti batire ili bwanji, ingagwiritsidwe ntchito ndi chaji, palibe chifukwa chotulutsa ndi kubwezeretsanso. 7. Batire yopepuka ya lifepo4
Batire ya lifepo4 yokhala ndi mphamvu yofanana ndi 2/3 ya voliyumu ya batire ya lead-acid, ndipo kulemera kwake ndi 1/3 ya batire ya lead-acid.
8. Mabatire a Lifepo4ndi oteteza chilengedwe
Batire nthawi zambiri imaonedwa kuti ilibe zitsulo zolemera ndi zitsulo zosowa (mabatire a Ni-MH amafuna zitsulo zosowa), osapha poizoni (osaphatikizika ndi SGS), osapha poizoni, mogwirizana ndi malamulo a European RoHS, ndi satifiketi ya batire yobiriwira. Chifukwa chake, chifukwa chomwe mabatire a lithiamu amakondedwa ndi makampaniwa makamaka ndi zinthu zachilengedwe. Chifukwa chake, batireyi yaphatikizidwa mu dongosolo la chitukuko chaukadaulo wa "863" mdziko lonse panthawi ya "Pulani ya Zaka Zisanu Khumi" ndipo yakhala pulojekiti yothandiza komanso yolimbikitsa dziko lonse. Popeza China yalowa mu WTO, kuchuluka kwa njinga zamagetsi zotumizidwa kunja ku China kudzawonjezeka mofulumira, ndipo njinga zamagetsi zolowera ku Europe ndi United States zafunika kukhala ndi mabatire osapha poizoni. Kugwira ntchito kwa batire ya lithiamu-ion kumadalira makamaka zinthu zabwino ndi zoyipa. Lithium iron phosphate ndi batire ya lithiamu yomwe yangowonekera m'zaka zaposachedwa. Kugwira ntchito kwake kotetezeka komanso moyo wake wozungulira sizofanana ndi zipangizo zina. Zizindikiro zofunika kwambiri zaukadaulo za batire. Batire ya Lifepo4 ili ndi ubwino wosakhala ndi poizoni, yosadetsa, yogwira ntchito bwino yotetezeka, mitundu yosiyanasiyana ya zipangizo zopangira, mitengo yotsika, komanso yokhalitsa nthawi yayitali. Ndi chinthu chabwino kwambiri cha cathode kwa mbadwo watsopano wamabatire a lithiamu-ion.