Ƙimar Jihar Lafiya (SOH).
Hakanan ana iya bayyana SOH na baturi azaman tsawon rayuwarsa. Za a iya raba tsawon rayuwar baturi zuwa nau'i biyu bisa la'akari da yanayin amfani daban-daban: tsawon lokacin ajiya da tsawon lokacin sake zagayowar.
Tsawon rayuwar ajiya yana wakiltar abubuwan tsufa da sakamakon baturi yayin ajiya. Lokacin ajiya, ƙarfin baturi yana raguwa ba tare da jurewa ba, kuma ƙimar fitar da kai{1} yana bambanta sosai dangane da yanayin ajiya. Don haka, haɓakawa ko rage yawan tsufan baturi ya dogara da yanayin ajiya. Yanayin ajiya shine babban abin da ke shafar rayuwar ajiya da fitar da kai{4}. Idan aka kwatanta da zafin jiki, mafi girman yanayin ajiyar baturi yana haifar da halayen gefe (kamar lalata) mafi kusantar, kuma asarar cations na ƙarfe ya fi tsanani; yayin da ƙananan zafin jiki, yaduwar abubuwa da halayen electrochemical suna raguwa, don haka rage yawan tsufa na baturi. Wani abin da ya shafi rayuwar ajiyar baturi shine ƙimar SOC yayin ajiyar baturi (a nan, SOC an bayyana shi azaman rabo na ion akan wayoyin). A ma'auni iri ɗaya amma daban-daban SOCs ajiyar baturi, hanyar tsufar baturi ya bambanta. A manyan SOCs, babban rashin daidaituwar caji yana wanzuwa a mahaɗin lantarki/electrolyte, wanda ke haɓaka halayen electrochemical.
Rayuwar kewayawa tana wakiltar tasirin amfani da baturi (caji da fitarwa) akan baturin. Tsufawar baturi na faruwa ci gaba a yayin duka biyun caji da fitarwa. Zazzabi da halin yanzu yayin amfani da baturi kai tsaye suna shafar rayuwar zagayowar. Bugu da kari, abubuwan da suka shafi rayuwar ajiyar baturi suma suna tasiri kan rayuwar zagayowar, kamar yadda abubuwan da suka danganci faruwa ke faruwa ba tare da la'akari da ko ana amfani da baturin ko yana hutawa ba. Yin amfani da baturi tsari ne na exothermic; ƙara yawan zafin jiki yana haɓaka waɗannan halayen, don haka ƙara tsufan baturi. Bayan waɗannan masu canji, sigogi masu alaƙa da rayuwar zagayowar ayyuka ne na yanayin cajin baturi. Adadin cajin da aka rasa yayin fitarwa ɗaya (canza yanayin caji) muhimmin abu ne mai tasiri mai mahimmanci akan tsufan baturi. Wannan al'amari da farko ya faru ne saboda lalacewar ingantacciyar lantarki da samuwar fim ɗin SEI yayin babban caji da fitarwa na yanzu.
1. Ma'anar Jihar Cutarwa (SOH) a cikin batura
Za a iya samun ma'anoni daban-daban na SOH daga ra'ayoyi daban-daban. A halin yanzu, ma'anar da aka saba amfani da su a cikin binciken baturi sun haɗa da ma'anar juriya na ciki, zurfin ma'anar fitarwa, da sauran ma'anar caji.
(1) Hanyar Ma'anar Juriya na Cikin Gida
Halin lafiyar baturi yana tabarbarewa yayin da juriyarsa na ciki ke karuwa a hankali. Ana iya bayyana yanayin lafiyar batirin (SOH) bisa wannan alaƙa:
A cikin dabarar, RNEW yana wakiltar juriyar ciki na baturi a lokacin ƙera; REOL yana wakiltar juriya na ciki a ƙarshen rayuwar baturin; kuma R yana wakiltar juriyar cikin baturin a halin yanzu.
Makullin wannan ma'anar shine samun madaidaicin ƙima don juriyar ciki na baturi. Amfaninsa shine ingantattun sakamakon aunawa, amma rashin lafiyarsa shine baya la'akari da ƙimar batirin, wanda yanayin lafiyar baturi (SOH) ya yi tasiri sosai.
(2) Ma'anar Zurfin Ruwa (SOH)
Zurfin fitarwa (SOH) na baturi yana nufin rabon ƙarfin da baturin ya fitar zuwa ƙarfinsa. Wannan rabo ya yi daidai da adadin lokutan da za a iya cajin baturi; ma'ana, mafi girman zurfin fitarwa, ƙarancin adadin lokutan da za'a iya cajin shi. Sabili da haka, ana iya bayyana SOH daga hangen nesa na zurfin fitarwa kamar: yawan adadin adadin da aka rage zuwa matsakaicin adadin caji a wani zurfin da aka ba da shi.
(3) Ma'anar Ƙarfin Ƙarfi
An ayyana Jihar Cajin (SOH) daga mahangar ragowar ƙarfin baturin. Bayan ɗan lokaci na amfani, ragowar ƙarfin baturin za a iya auna kai tsaye. Saboda haka, bari Cnew ya zama matsakaicin ƙarfin baturi lokacin da ba a yi amfani da shi ba, kuma Cnorm ya zama iyakar ƙarfin baturi mai amfani. Bayan haka, ana iya bayyana SOH a matsayin ...
