Njengoko intengiso kunye nobunini bezithuthi ezintsha zamandla busanda, iingozi zomlilo zezithuthi ezintsha zamandla nazo ziyenzeka ngamanye amaxesha. Uyilo lwenkqubo yolawulo lobushushu yingxaki ethintela uphuhliso lwezithuthi ezintsha zamandla. Ukuyila inkqubo yolawulo lobushushu ezinzileyo nesebenzayo kubaluleke kakhulu ekuphuculeni ukhuseleko lwezithuthi ezintsha zamandla.
Imodeli yobushushu bebhetri yeLi-ion sisiseko solawulo lobushushu bebhetri yeLi-ion. Phakathi kwazo, imodeli yokuguquguquka kobushushu kunye nemodeli yokuguquguquka kobushushu ziinkalo ezimbini ezibalulekileyo zemodeli yokufudumala yebhetri yeLi-ion. Kwizifundo ezikhoyo malunga nokuguquguquka kweempawu zokuguquguquka kobushushu beebhetri, iibhetri zeLithium-ion zithathwa njengezinokuguquguquka kobushushu be-anisotropic. Ke ngoko, kubaluleke kakhulu ukufunda impembelelo yeendawo ezahlukeneyo zokuguquguquka kobushushu kunye nemiphezulu yokuguquguquka kobushushu ekuchithekeni kobushushu kunye nokuguquguquka kobushushu beebhetri zeLithium-ion ukuze kuyilo lweenkqubo zolawulo lobushushu ezisebenzayo nezithembekileyo zeebhetri zeLithium-ion.
Iseli yebhetri ye-lithium iron phosphate ye-50 A·ah yasetyenziswa njengesixhobo sophando, kwaye iimpawu zayo zokuziphatha kokudlulisa ubushushu zahlalutywa ngokweenkcukacha, kwaye kwacetyiswa ingcamango entsha yoyilo lolawulo lobushushu. Imilo yeseli iboniswe kuMfanekiso 1, kwaye iiparameter zobukhulu obuthile ziboniswe kwiTheyibhile 1. Ulwakhiwo lwebhetri ye-Li-ion ngokubanzi luquka i-electrode elungileyo, i-electrode engalunganga, i-electrolyte, i-separator, i-electrode engalunganga, i-electrode engalunganga, i-center terminal, izinto zokukhusela, i-safety valve, i-positive temperature coefficient (PTC)(Isifudumezi sePTC esipholileyo/Isifudumezi soMoya sePTC) i-thermistor kunye nebhokisi yebhetri. I-separator ibekwe phakathi kweziqwenga ze-pole ezilungileyo nezingalunganga, kwaye isiseko sebhetri senziwe ngokujija okanye iqela le-pole lenziwe ngokulamination. Yenza lula isakhiwo seseli esineengqimba ezininzi sibe yinto yeseli enobukhulu obufanayo, kwaye wenze unyango olulinganayo kwiiparameter ze-thermophysical zeseli, njengoko kubonisiwe kuMfanekiso 2. Izinto zeseli yebhetri zithathwa njengeyunithi ye-cuboid eneempawu ze-anisotropic thermal conductivity, kwaye i-thermal conductivity (λz) ethe nkqo kwicala le-stacking isetiwe ukuba incinci kune-thermal conductivity (λ x, λy) ehambelana necala le-stacking.
(1) Umthamo wokusasaza ubushushu weskimu solawulo lobushushu bebhetri ye-lithium-ion uya kuchaphazeleka ziiparameter ezine: ukuhanjiswa kobushushu ngokuthe nkqo kumphezulu wokusasaza ubushushu, umgama wendlela phakathi kombindi womthombo wobushushu kunye nomphezulu wokusasaza ubushushu, ubungakanani bomphezulu wokusasaza ubushushu weskimu solawulo lobushushu, kunye nomahluko wobushushu phakathi komphezulu wokusasaza ubushushu kunye nokusingqongileyo okungqongileyo.
(2) Xa ukhetha umphezulu wokusasaza ubushushu kuyilo lolawulo lobushushu lweebhetri ze-lithium-ion, iskimu sokudlulisa ubushushu ecaleni kwento yophando ekhethiweyo singcono kuneskimu sokudlulisa ubushushu kumphezulu osezantsi, kodwa kwiibhetri ezisikwere zobukhulu obahlukeneyo, kuyimfuneko ukubala amandla okusasaza ubushushu kwiindawo ezahlukeneyo zokusasaza ubushushu ukuze kuchongwe indawo efanelekileyo yokupholisa.
(3) Le fomula isetyenziselwa ukubala nokuvavanya amandla okusasaza ubushushu, kwaye ukulinganisa ngamanani kusetyenziswa ukuqinisekisa ukuba iziphumo zihambelana ngokupheleleyo, nto leyo ebonisa ukuba indlela yokubala iyasebenza kwaye ingasetyenziswa njengesalathiso xa kuyilwa ulawulo lobushushu lweeseli zesikwere.I-BTMS)
Ixesha leposi: Epreli-27-2023
