Popeza batire ya lithiamu-ion idalowa pamsika, yakhala ikugwiritsidwa ntchito kwambiri chifukwa cha zabwino zake monga moyo wautali, mphamvu yayikulu yeniyeni komanso osakumbukira. Kugwiritsa ntchito kutentha pang'ono kwa mabatire a lithiamu-ion kuli ndi zovuta monga kutsika kwamphamvu, kutsika kwakukulu, kusayenda bwino kwa kayendedwe kake, kusinthika kowonekera kwa lithiamu, komanso kusakhazikika kwa lithiamu. Komabe, ndi kuwonjezeka kosalekeza kwa madera ogwiritsira ntchito, zoletsa zomwe zimabweretsedwa ndi kutentha kochepa kwa mabatire a lithiamu-ion zakhala zoonekeratu.
Malinga ndi malipoti, mphamvu yotulutsa mabatire a lithiamu-ion pa -20 ° C ndi pafupifupi 31.5% yokha ya kutentha kwapakati. Kutentha kwamabatire amtundu wa lithiamu-ion kuli pakati pa -20 ndi +60 ° C. Komabe, pankhani yazamlengalenga, mafakitale ankhondo, ndi magalimoto amagetsi, mabatire amayenera kugwira ntchito pafupipafupi -40 ° C. Chifukwa chake, kuwongolera kutentha kwamphamvu kwa mabatire a lithiamu-ion ndikofunikira kwambiri.
Zinthu zomwe zimalepheretsa kutsika kwa kutentha kwa mabatire a lithiamu-ion:
1. M'malo otsika kutentha, kukhuthala kwa electrolyte kumawonjezeka, kapena kulimba pang'ono, zomwe zimapangitsa kuchepa kwa conductivity ya batri ya lithiamu-ion.
2. Kugwirizana pakati pa electrolyte, electrode negative ndi diaphragm kumakhala kosauka kumalo otsika kutentha.
3. M'madera otsika kwambiri, ma electrode a lithiamu-ion batire amawonongeka kwambiri, ndipo chitsulo chosungunuka cha lithiamu chimagwirizana ndi electrolyte, ndipo kuyika kwa mankhwala kumapangitsa kuti makulidwe a mawonekedwe olimba a electrolyte (SEI) achuluke.
4. M'malo otsika kutentha, dongosolo la kufalikira kwa batri ya lithiamu ion muzinthu zogwira ntchito kumachepa, ndipo kukana kutengera ndalama (Rct) kumawonjezeka kwambiri.
Zokambirana pazifukwa zomwe zimakhudza kuchepa kwa kutentha kwa mabatire a lithiamu-ion:
Lingaliro la akatswiri 1: Electrolyte imakhudza kwambiri kutentha kochepa kwa mabatire a lithiamu-ion, ndipo mawonekedwe ndi thupi ndi mankhwala a electrolyte zimakhudza kwambiri kutentha kwa batri. Mavuto amakumana ndi batire mkombero pa kutentha otsika ndi: mamasukidwe akayendedwe a electrolyte adzawonjezeka, ndi ion conduction liwiro m'mbuyo, chifukwa mismatch mu elekitironi kusamuka liwiro la dera kunja. Choncho, batire adzakhala kwambiri polarized ndi mlandu ndi kutulutsa mphamvu adzatsika kwambiri. Makamaka pakulipiritsa kutentha pang'ono, ma ion a lithiamu amatha kupanga ma lithiamu dendrites pamtunda wa electrode yoyipa, zomwe zimapangitsa kuti batire ilephere.
Kutsika kwa kutentha kwa electrolyte kumagwirizana kwambiri ndi kayendedwe ka electrolyte yokha. Kuthamanga kwapamwamba kwa electrolyte kumayendetsa ma ions mofulumira, ndipo kungathe kuchita zambiri pa kutentha kochepa. Pamene mchere wa lithiamu mu electrolyte umasiyanitsidwa, kuchuluka kwa kusamuka kumawonjezeka komanso kumapangitsa kuti ma conductivity apite patsogolo. Kukwera kwamagetsi amagetsi, kuthamanga kwa ma ion conductivity, kumachepetsa polarization, komanso kugwira ntchito bwino kwa batri pa kutentha kochepa. Chifukwa chake, kukhathamiritsa kwamphamvu kwamagetsi ndikofunikira kuti mukwaniritse bwino kutentha kwa mabatire a lithiamu-ion.
The madutsidwe wa electrolyte zogwirizana zikuchokera electrolyte, ndi kuchepetsa mamasukidwe akayendedwe zosungunulira ndi imodzi mwa njira kusintha madutsidwe wa electrolyte. The fluidity wabwino wa zosungunulira pa kutentha otsika ndi chitsimikizo cha zoyendera ion, ndi olimba electrolyte nembanemba wopangidwa ndi electrolyte pa elekitirodi negative pa kutentha otsika ndi chinsinsi zimakhudza lifiyamu ayoni conduction, ndi RSEI ndi impedance waukulu wa lithiamu. mabatire a ion m'malo otentha otsika.
Lingaliro la akatswiri 2: Chinthu chachikulu chomwe chimachepetsa kutentha kwa mabatire a lithiamu-ion ndi kuwonjezeka kwamphamvu kwa Li + kukana kutentha kwa kutentha, osati filimu ya SEI.
Kotero, momwe mungachitire moyenera mabatire a lithiamu m'nyengo yozizira?
1. Musagwiritse ntchito mabatire a lithiamu m'malo otentha kwambiri
Kutentha kumakhudza kwambiri mabatire a lithiamu. Kutsika kwa kutentha, kumachepetsanso ntchito ya mabatire a lithiamu, yomwe imayambitsa kuchepa kwakukulu kwa malipiro ndi kutulutsa mphamvu. Nthawi zambiri, kutentha kwa mabatire a lithiamu kumakhala pakati pa -20 madigiri mpaka -60 madigiri.
Kutentha kukakhala kotsika kuposa 0 ℃, samalani kuti musapereke ndalama panja, simungathe kulipiritsa ngakhale mutayipiritsa, titha kutenga batri kuti tiyipire m'nyumba (zindikirani, onetsetsani kuti musakhale kutali ndi zida zoyaka moto !!! ), kutentha kukakhala kochepa kuposa -20 ℃, batire imangolowa pamalo ogona ndipo silingagwiritsidwe ntchito moyenera. Choncho, kumpoto makamaka wogwiritsa ntchito malo ozizira.
Ngati mulibe cholipiritsa m'nyumba, muyenera kugwiritsa ntchito mokwanira kutentha kotsalira pamene batire yatulutsidwa, ndikuyimitsa padzuwa mukangoyimitsa magalimoto kuti muwonjezere kuchuluka kwacharge ndikupewa kusinthika kwa lithiamu.
2. Khalani ndi chizolowezi chogwiritsa ntchito ndi kulipiritsa
M'nyengo yozizira, mphamvu ya batri ikakhala yotsika kwambiri, tiyenera kuilipira pakapita nthawi ndikukhala ndi chizolowezi chotchaja ikangogwiritsidwa ntchito. Kumbukirani, musayerekeze mphamvu ya batri m'nyengo yozizira kutengera moyo wa batri wamba.
Ntchito ya batri ya lithiamu imachepa m'nyengo yozizira, yomwe imakhala yosavuta kwambiri kuti ipangitse kuchulukirachulukira komanso kuchulukirachulukira, zomwe zingakhudze moyo wautumiki wa batri ndikuyambitsa ngozi yoyaka kwambiri. Choncho, m'nyengo yozizira, tiyenera kulabadira kwambiri kulipiritsa ndi kumaliseche osaya ndi ozama adzapereke. Makamaka, ziyenera kuwonetsedwa kuti musayimitse galimotoyo kwa nthawi yayitali m'njira yolipiritsa nthawi zonse kuti mupewe kuchulukirachulukira.
3. Osamatalikirapo pochajitsa, kumbukirani kuti musamalipitse kwa nthawi yayitali
Osasiya galimotoyo ili pachimake kwa nthawi yayitali kuti izi zitheke, ingoitulutsa ikakwana. M'nyengo yozizira, malo ochapira sayenera kutsika kuposa 0 ℃, ndipo mukachajitsa, musachoke patali kuti mupewe ngozi zadzidzidzi ndikuthana nazo munthawi yake.
4. Gwiritsani ntchito chojambulira chapadera cha mabatire a lithiamu mukamalipira
Msikawu wadzaza ndi ma charger ambiri otsika. Kugwiritsa ntchito ma charger otsika kumatha kuwononga batire komanso kuyatsa moto. Musakhale aumbombo pogula zinthu zotsika mtengo popanda zitsimikizo, ndipo musagwiritse ntchito mabatire a lead-acid; ngati chojambulira chanu sichingagwiritsidwe ntchito moyenera, siyani kugwiritsa ntchito nthawi yomweyo, ndipo musachiyike.
5. Samalani ndi moyo wa batri ndikusintha ndi yatsopano pakapita nthawi
Mabatire a lithiamu amakhala ndi moyo wautali. Mafotokozedwe ndi mitundu yosiyanasiyana ali ndi moyo wa batri wosiyana. Kuphatikiza pakugwiritsa ntchito molakwika tsiku ndi tsiku, moyo wa batri umasiyanasiyana kuyambira miyezi ingapo mpaka zaka zitatu. Ngati galimotoyo yazimitsidwa kapena ili ndi moyo wa batri waufupi modabwitsa, chonde titumizireni pakapita nthawi ogwira ntchito yokonza batire ya Lithium.
6. Siyani magetsi ochuluka kuti apulumuke m'nyengo yozizira
Kuti mugwiritse ntchito galimoto nthawi zonse kumapeto kwa chaka chamawa, ngati batire siligwiritsidwa ntchito kwa nthawi yayitali, kumbukirani kulipira 50% -80% ya batri, ndikuichotsa m'galimoto kuti isungidwe, ndikulipiritsa nthawi zonse, pafupifupi kamodzi pamwezi. Zindikirani: Batire iyenera kusungidwa pamalo owuma.
7. Ikani batire molondola
Osamiza batire m'madzi kapena kupanga batire kukhala yonyowa; osayika batire yopitilira magawo 7, kapena kutembenuza batire mozondoka.
Nthawi yotumiza: Dec-24-2021