Xa kuthelekiswa nezinye iibhetri zecylindrical kunye nesikwere, ukupakishwa okuguquguqukayoiibhetri ze-lithiumziya zithandwa ngakumbi ngokusetyenziswa ngenxa yeenzuzo zokuyila ubungakanani obuguquguqukayo kunye nokuxinana kwamandla aphezulu. Uvavanyo lwesekethe emfutshane yindlela esebenzayo yokuvavanya iibhetri ze-lithium zokupakisha. Eli phepha lihlalutya imodeli yokungaphumeleli yovavanyo lwe-short-circuit yebhetri ukufumana ezona zinto ziphambili ezichaphazela ukusilela kwesekethe emfutshane; ihlalutya imodeli yokungaphumeleli ngokwenza ukuqinisekiswa komzekelo phantsi kweemeko ezahlukeneyo kwaye inike izindululo zokuphucula ukhuseleko lokupakisha okuguquguqukayo kweebhetri ze-lithium.
Ukungaphumeleli kwexesha elifutshane lokuguquguqukaukupakisha iibhetri ze-lithiumngokuqhelekileyo kubandakanya ukuvuza kolwelo, ukuqhekeka okomileyo, umlilo kunye nogqabhuko-dubulo. Ukuvuza kunye nokuqhekeka okomileyo ngokuqhelekileyo kwenzeka kwindawo ebuthakathaka yephakheji ye-lug, apho iphakheji ye-aluminium eyomileyo eyomileyo ingabonwa ngokucacileyo emva kovavanyo; Umlilo kunye nokuqhuma kuyingozi ngakumbi iingozi zemveliso yokhuseleko, kwaye isizathu ngokuqhelekileyo sisenzo sobundlobongela se-electrolyte phantsi kweemeko ezithile emva kokuqhekeka kweplastiki ye-aluminium eyomileyo. Ngaloo ndlela, xa kuthelekiswa novavanyo olufutshane lwesetyhula yokupakisha ibhetri ye-lithium eguquguqukayo, imeko ye-aluminium-plastic package iyona nto iphambili ekhokelela ekungaphumeleli.
Kuvavanyo olufutshane lwesekethe, i-voltage evulekileyo yesekethe yeibhetringokukhawuleza ihla ukuya kwi-zero, ngelixa i-current enkulu idlula kwisiphaluka kunye nokushisa kwe-Joule kuveliswa. Ubungakanani bobushushu beJoule buxhomekeke kwizinto ezintathu: okwangoku, ukuchasana kunye nexesha. Nangona i-short-circuit current ikhona ixesha elifutshane, isixa esikhulu sobushushu sisenokuveliswa ngenxa yombane ophezulu. Obu bushushu bukhutshwa kancinci ngexesha elifutshane (ngokuqhelekileyo imizuzu embalwa) emva komjikelezo omfutshane, okukhokelela ekwandeni kobushushu bebhetri. Njengoko ixesha linyuka, ukushisa kwe-Joule kuchithwa kakhulu kwindawo kwaye ubushushu bebhetri buqala ukuhla. Ngoko ke, kucingelwa ukuba ukusilela kwebhetri okufutshane kwenzeka ngexesha elifutshane kunye nakwixesha elifutshane emva koko.
I-phenomenon ye-gas bulging ivame ukuvela kuvavanyo olufutshane lwesiphaluka sokupakisha ibhetri ye-lithium eguquguqukayo, ekufuneka ibangelwa ezi zizathu zilandelayo. Eyokuqala kukungazinzi kwenkqubo ye-electrochemical, oko kukuthi, i-oxidative okanye i-reductive decomposition ye-electrolyte ebangelwa ngumbane ophezulu odlulayo kwi-interface phakathi kwe-electrode kunye ne-electrolyte, kwaye iimveliso zegesi zizaliswe kwiphakheji ye-aluminium-plastiki. Ukukhutshwa kwegesi okubangelwa sesi sizathu kubonakala ngakumbi phantsi kweemeko eziphezulu zokushisa, kuba ukuphendula kwecala lokubola kwe-electrolyte kunokwenzeka ukuba kwenzeke kumaqondo aphezulu. Ukongeza, nokuba i-electrolyte ayisebenzi kwicala lokubola, inokuthi iguqulwe ngokuyinxenye bubushushu beJoule, ngakumbi kumalungu e-electrolyte anoxinzelelo oluphantsi lomphunga. I-gas production bulge ebangelwa yile sizathu ivakalelwa ngakumbi kwiqondo lokushisa, oko kukuthi, i-bulge iyanyamalala xa ubushushu beseli buhla kwiqondo lokushisa. Nangona kunjalo, kungakhathaliseki ukuba yintoni isizathu sokuvelisa igesi, uxinzelelo lomoya oluphakamileyo ngaphakathi kwebhetri ngexesha lesiphaluka esifutshane luya kwandisa ukuqhekezwa okomileyo kwephakheji ye-aluminium-plastiki kunye nokwandisa amathuba okungaphumeleli.
Ngokusekwe kuhlalutyo lwenkqubo kunye nendlela yokungaphumeleli kwesekethe emfutshane, ukhuseleko lokupakisha i-lithium eguquguqukayo.iibhetriinokuphuculwa ukusuka kule miba ilandelayo: ukulungiswa kwenkqubo ye-electrochemical, ukunciphisa ukuxhathisa indlebe okulungileyo kunye nokubi, kunye nokuphucula amandla e-aluminium-plastic package. Ukulungiswa kwenkqubo ye-electrochemical inokuqhutywa kwii-angles ezahlukeneyo, ezifana nezixhobo ezisebenzayo kunye nezingalunganga, umlinganiselo we-electrode kunye ne-electrolyte, ukwenzela ukuba kuphuculwe amandla ebhetri ukumelana nobushushu obuphezulu bexeshana kunye nexesha elifutshane. Ukunciphisa ukuchasana kwe-lug kunokunciphisa isizukulwana sokushisa kwe-Joule kunye nokuqokelela kule ndawo kunye nokunciphisa kakhulu impembelelo yokushisa kwindawo ebuthathaka yephakheji. Ukuphucula amandla e-aluminium-plastic package inokufezekiswa ngokulungisa iiparameters kwinkqubo yokuvelisa ibhetri, ukunciphisa kakhulu ukwenzeka kokuqhekeka okomileyo, umlilo kunye nokuqhuma.
Ixesha lokuposa: Apr-13-2023