Yanayin da ake amfani da batirin lithium na polymer shi ma yana da matuƙar muhimmanci wajen yin tasiri ga rayuwar zagayowarsa. Daga cikinsu, zafin yanayi muhimmin abu ne. Zafin yanayi mai ƙanƙanta ko mai yawa zai iya shafar rayuwar zagayowar batirin Li-polymer. A aikace-aikacen batirin wutar lantarki da aikace-aikacen inda zafin jiki yake da babban tasiri, ana buƙatar sarrafa zafin batirin Li-polymer don inganta ingancin batirin.

Dalilan da ke haifar da canjin zafin jiki na ciki na fakitin batirin Li-polymer

DominBatirin Li-polymer, samar da zafi na ciki shine zafi na amsawa, zafi na polarization da kuma zafi na Joule. Ɗaya daga cikin manyan dalilan da ke haifar da ƙaruwar zafin batirin Li-polymer shine ƙaruwar zafin jiki da juriyar ciki na batirin ke haifarwa. Bugu da ƙari, saboda yawan sanya jikin tantanin halitta mai zafi, yankin tsakiya zai tara ƙarin zafi, kuma yankin gefen ya ragu, wanda ke ƙara rashin daidaiton zafin jiki tsakanin ƙwayoyin halitta daban-daban a cikin batirin Li-polymer.

Hanyoyin daidaita zafin batirin lithium na polymer

1. Daidaitawar ciki

Za a sanya firikwensin zafin jiki a cikin mafi wakilci, mafi girman canjin zafin jiki a wurin, musamman mafi girma da mafi ƙanƙantar zafin jiki, da kuma tsakiyar tarin zafi na batirin polymer lithium mafi ƙarfi.

1. Dokokin waje

Tsarin Sanyaya: A halin yanzu, idan aka yi la'akari da sarkakiyar tsarin sarrafa zafi na batirin Li-polymer, yawancinsu suna amfani da tsarin sauƙi na hanyar sanyaya iska. Kuma idan aka yi la'akari da daidaiton watsawar zafi, yawancinsu suna amfani da hanyar samun iska a layi ɗaya.

1. Daidaita yanayin zafi: tsarin dumama mafi sauƙi shine ƙara faranti na dumama a saman da ƙasan batirin Li-polymer don aiwatar da dumama, akwai layin dumama kafin da bayan kowace batirin Li-polymer ko amfani da fim ɗin dumama da aka naɗe a kusa da shiBatirin Li-polymerdon dumamawa.

Babban dalilan da suka sa aka rage karfin batirin lithium polymer a yanayin zafi mai ƙarancin yawa

1. Rashin kyawun wutar lantarki, rashin isasshen jika da/ko kuma ƙarfin diaphragm, jinkirin ƙaura na ions na lithium, jinkirin canja wurin caji a hanyar sadarwa ta electrode/electrolyte, da sauransu.

2. Bugu da ƙari, ƙarfin membrane na SEI yana ƙaruwa a ƙananan zafin jiki, yana rage saurin ions na lithium da ke ratsawa ta hanyar haɗin lantarki/electrolyte. Ɗaya daga cikin dalilan ƙaruwar ƙarfin fim ɗin SEI shine cewa yana da sauƙi ga ions na lithium su fito daga electrode mara kyau a ƙananan zafin jiki kuma ya fi wahalar sakawa.

3. Lokacin caji, ƙarfen lithium zai bayyana kuma ya yi aiki tare da electrolyte don samar da sabon fim ɗin SEI don rufe ainihin fim ɗin SEI, wanda ke ƙara juriyar batirin don haka yana sa ƙarfin batirin ya ragu.

Ƙananan zafin jiki akan aikin batirin lithium polymer

1. ƙarancin zafin jiki akan caji da aikin fitarwa

Yayin da zafin jiki ke raguwa, matsakaicin ƙarfin fitarwa da ƙarfin fitarwa naBatirin lithium polymersuna raguwa, musamman idan zafin jiki ya kai -20 ℃, ƙarfin fitar da batirin da matsakaicin ƙarfin fitarwa yana raguwa da sauri.

2. Ƙananan zafin jiki akan aikin zagayowar

Ƙarfin batirin yana ruɓewa da sauri a -10℃, kuma ƙarfin yana ci gaba da kasancewa 59mAh/g kawai bayan zagaye 100, tare da ruɓewar ƙarfin 47.8%; ana gwada batirin da aka fitar a ƙananan zafin jiki a zafin ɗaki don caji da fitarwa, kuma ana duba aikin dawo da ƙarfin a cikin lokacin. Ƙarfinsa ya dawo zuwa 70.8mAh/g, tare da asarar ƙarfin 68%. Wannan yana nuna cewa ƙaramin zafin jiki na batirin yana da tasiri sosai akan dawo da ƙarfin baturi.

3. Tasirin ƙarancin zafin jiki akan aikin tsaro

Cajin batirin polymer lithium tsari ne na ions na lithium da ke fitowa daga electrode mai kyau ta hanyar ƙaurar electrolyte da ke cikin abu mara kyau, ions na lithium zuwa polymerization na electrode mara kyau, ta hanyar ƙwayoyin carbon guda shida suna ɗaukar lithium ion. A yanayin zafi mai ƙasa, aikin amsawar sinadarai yana raguwa, yayin da ƙaurar ions na lithium ke raguwa, ions na lithium da ke saman electrode mara kyau ba a saka su a cikin electrode mara kyau ba an rage su zuwa ƙarfe na lithium, kuma ruwan sama da ke sauka a saman electrode mara kyau ya samar da lithium dendrites, wanda zai iya huda diaphragm cikin sauƙi wanda ke haifar da ɗan gajeren zagaye a cikin batirin, wanda zai iya lalata batirin kuma ya haifar da haɗarin aminci.

A ƙarshe, har yanzu muna son tunatar da ku cewa batirin lithium polymer ya fi kyau kada a yi caji a lokacin hunturu a yanayin zafi mai ƙanƙanta, saboda ƙarancin zafin jiki, ions na lithium da ke kan electrode mara kyau za su samar da lu'ulu'u na ion, suna huda diaphragm kai tsaye, wanda gabaɗaya ke haifar da ƙaramin da'ira yana shafar rayuwa da aiki, fashewar kai tsaye mai tsanani. Don haka wasu mutane suna nuna cewa ba za a iya caji cajin batirin lithium polymer na hunturu ba, wannan ya faru ne saboda ɓangaren tsarin sarrafa baturi yana faruwa ne saboda kariyar samfurin.