Kusanthula Kuwonongeka kwa Mabatire Amalonda a Lithium-Ion mu Kusungirako Nthawi Yaitali. Mabatire a lithiamu-ion akhala ofunikira m'mafakitale osiyanasiyana chifukwa cha kuchuluka kwawo kwamphamvu komanso kuchita bwino. Komabe, ntchito yawo imawonongeka pakapita nthawi, makamaka panthawi yosungirako nthawi yayitali. Kumvetsetsa njira ndi zinthu zomwe zikuyambitsa kuwonongeka kumeneku ndikofunikira pakuwongolera moyo wa batri ndikukulitsa mphamvu zake. Nkhaniyi ikuyang'ana pakuwunika kwa kuwonongeka kwa mabatire a lithiamu-ion omwe amasungidwa kwa nthawi yayitali, ndikupereka njira zochepetsera kuchepa kwa magwiridwe antchito ndikuwonjezera moyo wa batri.
Njira Zowonongeka Kwambiri:
Kudzitulutsa
Zochita zamkati zamakina mkati mwa mabatire a lithiamu-ion zimapangitsa kuchepa kwapang'onopang'ono mphamvu ngakhale batire ilibe ntchito. Njira yodzichotsera nokha, ngakhale imakhala yochedwa, imatha kufulumizitsidwa ndi kutentha kosungirako kokwezeka. Choyambitsa chachikulu cha kudzichotsa pawokha ndi zochitika zam'mbali zomwe zimayambitsidwa ndi zonyansa mu electrolyte ndi zolakwika zazing'ono muzinthu za electrode. Ngakhale kuti izi zimachitika pang'onopang'ono kutentha kwa chipinda, mlingo wawo umawonjezeka kawiri ndi kutentha kwa 10 ° C kulikonse. Choncho, kusunga mabatire pa kutentha kwakukulu kuposa momwe akulimbikitsira kungathe kuonjezera kwambiri kudziletsa, zomwe zimabweretsa kuchepa kwakukulu kwa mphamvu musanagwiritse ntchito.
Electrode reactions
Zomwe zimachitika m'mbali mwa electrolyte ndi maelekitirodi zimapangitsa kuti pakhale mawonekedwe olimba a electrolyte (SEI) ndikuwonongeka kwa zinthu za elekitirodi. Wosanjikiza wa SEI ndi wofunikira kuti batire igwire bwino ntchito, koma pakatentha kwambiri, imapitilirabe, kuwononga ayoni a lithiamu kuchokera ku electrolyte ndikuwonjezera kukana kwa mkati mwa batire, motero kuchepetsa mphamvu. Kuphatikiza apo, kutentha kwambiri kumatha kusokoneza kapangidwe kazinthu zama electrode, kupangitsa ming'alu ndi kuwonongeka, kumachepetsanso mphamvu ya batri komanso moyo wautali.
Kutayika kwa lithiamu
Panthawi yothamangitsira, ma ma ion a lithiamu amakhala otsekeka m'mapangidwe a ma elekitirodi, zomwe zimapangitsa kuti asapezeke mtsogolo. Kutayika kwa lithiamu kumeneku kumachulukirachulukira pakutentha kosungirako chifukwa kutentha kwambiri kumalimbikitsa ma lithiamu ma ion kuti akhale osasinthika osasinthika mu zolakwika za lattice. Zotsatira zake, kuchuluka kwa ayoni a lithiamu kumachepa, zomwe zimapangitsa kuti mphamvu ziziyenda komanso moyo wamfupi wozungulira.
Zomwe Zimakhudza Chiwopsezo cha Kuwonongeka
Kutentha kosungirako
Kutentha ndizomwe zimawonetsa kuwonongeka kwa batri. Mabatire amayenera kusungidwa pamalo ozizira, owuma, mkatikati mwa 15 ° C mpaka 25 ° C, kuti achepetse kuwonongeka. Kutentha kwapamwamba kumathandizira kuchuluka kwa mankhwala, kuonjezera kudziletsa komanso kupanga gulu la SEI, motero kufulumizitsa ukalamba wa batri.
State of charge (SOC)
Kusunga SOC pang'ono (mozungulira 30-50%) panthawi yosungirako kumachepetsa kupsinjika kwa ma electrode ndikuchepetsa kutsika kwamadzimadzi, potero kumakulitsa moyo wa batri. Magulu onse a SOC apamwamba komanso otsika amawonjezera kupsinjika kwazinthu zama electrode, kumabweretsa kusintha kwamapangidwe ndi zina zambiri. Gawo la SOC limawongolera kupsinjika ndi zochita zomwe zimachitika, ndikuchepetsa kutsika.
Kuzama kwa kutulutsa (DOD)
Mabatire omwe amathiridwa kwambiri (DOD yapamwamba) amatsika mwachangu poyerekeza ndi omwe akutuluka mozama. Kutulutsa kwakuya kumapangitsa kusintha kwakukulu kwazinthu zama elekitirodi, kupanga ming'alu yochulukirapo ndi zinthu zomwe zimakhudzidwa ndi mbali, motero zimachulukitsa kuwonongeka. Kupewa kutulutsa mabatire panthawi yosungirako kumathandiza kuchepetsa izi, kumatalikitsa moyo wa batri.
Zaka za kalendala
Mabatire mwachibadwa amawonongeka pakapita nthawi chifukwa cha mankhwala ndi zochitika zakuthupi. Ngakhale pansi pa malo abwino osungira, zigawo za mankhwala za batri zidzawonongeka pang'onopang'ono ndikulephera. Kusungirako koyenera kungathe kuchepetsa ukalamba umenewu koma sikungalepheretse.
Njira Zowunikira Zowonongeka:
Kuthekera kuzimiririka muyeso
Kuyeza nthawi ndi nthawi kutulutsa kwa batri kumapereka njira yowongoka yowonera kuwonongeka kwake pakapita nthawi. Kuyerekeza mphamvu ya batri nthawi zosiyanasiyana kumathandizira kuwunika kuchuluka kwake komanso kuchuluka kwake, zomwe zimathandiza kukonza nthawi yake.
Electrochemical impedance spectroscopy (EIS)
Njira iyi imasanthula kukana kwa batri mkati, ndikuwunikira mwatsatanetsatane kusintha kwa ma electrode ndi ma electrolyte. EIS imatha kuzindikira kusintha kwa mkati mwa batri, kuthandizira kuzindikira zomwe zimayambitsa kuwonongeka, monga kukhuthala kwa SEI kapena kuwonongeka kwa electrolyte.
Kusanthula kwa postmortem
Kuchotsa batire lowonongeka ndikusanthula ma elekitirodi ndi ma electrolyte pogwiritsa ntchito njira monga X-ray diffraction (XRD) ndi scanning electron microscopy (SEM) zitha kuwulula kusintha kwa thupi ndi mankhwala komwe kumachitika posungira. Kusanthula kwa batire kumapereka chidziwitso chatsatanetsatane chakusintha kwamapangidwe ndi kapangidwe ka batri, kuthandizira kumvetsetsa njira zowonongera ndikuwongolera kapangidwe ka batri ndi njira zokonzera.
Njira Zochepetsera
Kusungirako kozizira
Sungani mabatire pamalo ozizira, olamuliridwa kuti muchepetse kudziyimitsa komanso njira zina zowononga zotengera kutentha. Choyenera, sungani kutentha kwa 15 ° C mpaka 25 ° C. Kugwiritsa ntchito zida zoziziritsira zodzipereka komanso machitidwe owongolera chilengedwe kumatha kuchedwetsa kwambiri kukalamba kwa batri.
Kusungirako ndalama pang'ono
Sungani pang'ono SOC (mozungulira 30-50%) panthawi yosungiramo kuti muchepetse kupsinjika kwa electrode ndikuchepetsa kuchepa. Izi zimafunika kukhazikitsa njira zoyenera zolipirira mu kasamalidwe ka batire kuti zitsimikizire kuti batire ikukhalabe mumtundu woyenera wa SOC.
Kuwunika pafupipafupi
Yang'anirani nthawi ndi nthawi mphamvu ya batri ndi mphamvu yamagetsi kuti muwone zomwe zikuwonongeka. Limbikitsani zochita zowongolera ngati pakufunika kutengera zomwe zawonedwa. Kuyang'anitsitsa nthawi zonse kungaperekenso machenjezo oyambirira a zinthu zomwe zingatheke, kuteteza kulephera kwadzidzidzi kwa batri panthawi yogwiritsira ntchito.
Kasamalidwe ka Battery System (BMS)
Gwiritsani ntchito BMS kuyang'anira thanzi la batri, kuwongolera kutulutsa kwachakudya, ndikukhazikitsa zinthu monga kusanja kwa ma cell ndi kuwongolera kutentha panthawi yosungira. BMS imatha kuzindikira momwe batire ilili munthawi yeniyeni ndikusinthira magwiridwe antchito kuti iwonjezere moyo wa batri ndikuwonjezera chitetezo.
Mapeto
Pomvetsetsa bwino njira zochepetsera, zomwe zimakhudza, komanso kugwiritsa ntchito njira zochepetsera bwino, mutha kupititsa patsogolo kasamalidwe ka nthawi yayitali kasungidwe ka mabatire a lithiamu-ion. Njirayi imathandizira kugwiritsa ntchito bwino batire ndikuwonjezera moyo wawo wonse, kuwonetsetsa kuti magwiridwe antchito ndi okwera mtengo pamafakitale. Kuti mumve zambiri zamayankho osungira mphamvu, lingalirani za215 kWh Commerce and Industrial Energy Storage System by Kamada Power.
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Nthawi yotumiza: May-29-2024