Imvelaphi

Ukusasazwa kwe-thermal yemodyuli namava alandelayo: Ukuqokelelwa kobushushu emva kokusetyenziswa kakubi kwe-thermal yeseli, ukubaleka kwe-thermal yeseli kunye nokubaleka kwemodyuli ye-thermal. Ukubaleka kwe-thermal kwiseli enye akunampembelelo; nangona kunjalo, xa ubushushu busasazeka kwezinye iiseli, ukusabalalisa kuya kubangela i-domino effect, ekhokelela ekubalekeni kwe-thermal yemodyuli yonke, ukukhulula amandla amakhulu. Umfanekiso woku-1bonisas isiphumo sovavanyo lwe-thermal runaway. Imodyuli iyavutha ngenxa yokusasazwa okungenakunqandwa.

I-conductivity yokushisa ngaphakathi kwiseli iya kuhluka ngokweendlela ezahlukeneyo. I-coefficient ye-conductivity yokushisa iya kuba phezulu kwicalaehambelanayongomqolo weseli; ngelixa isalathiso esithe nkqo kwi-roll core ine-conductivity ephantsi. Ke ngoko ukusasazeka kwe-thermal ukusuka kwelinye icala ukuya kwelinye phakathi kweeseli kuyakhawuleza kunokuba kwenzayo ngeethebhu ukuya kwiiseli. Ngoko ke, ukusasaza kunokubonwa njengokusasazwa komlinganiselo omnye. Njengoko iimodyuli zebhetri ziyilelwe ukuxinana kwamandla aphezulu, indawo phakathi kweeseli iya isiba ncinci, nto leyo eya kwenza ukwanda kobushushu. Ke ngoko, ukucinezela okanye ukuthintela ukusasazeka kobushushu kwimodyuli kuya kuthathwa njengeisiphumoindlela yokunciphisa iingozi. 

Indlela yokucinezela ukubaleka kwe-thermal kwimodyuli

Singakwazi ukunqanda ukubaleka kwe-thermal ngokusebenzayo okanye ngokungenzi nto.

Ukucinezela okusebenzayo

Uxinzelelo olusebenzayo lokusasazeka kwe-thermal lusekwe ikakhulu kwinkqubo yolawulo lobushushu, njengale:

1) Beka iipayipi zokupholisa phantsi okanye emacaleni angaphakathi emodyuli, kwaye ugcwalise ngamanzi okupholisa. Ukuhamba kolwelo olupholisayo kunokunciphisa ngokufanelekileyo ukwanda.

2) Misela imibhobho yokucima umlilo phezulu kwimodyuli. Xa kukho ukubaleka kwe-thermal, igesi ephezulu yobushushu ekhutshiweyo kwibhetri iya kubangela ukuba imibhobho itshize isicima-mlilo ukucinezela ukwanda.

Nangona kunjalo, ulawulo lwe-thermal lufuna amacandelo angaphezulu, okukhokelela kwiindleko eziphezulu kunye noxinano lwamandla aphantsi. Kwakhona kunokwenzeka ukuba inkqubo yolawulo isenokungasebenzi.

Ukucinezelwa kwePasitive

Uxinzelelo lwe-Passive lusebenza ngokuthintela ukusasazwa ngezinto ze-adiabatic phakathi kweeseli ezibalekayo ezishushu kunye neeseli eziqhelekileyo.

Ngokuqhelekileyo imathiriyeli kufuneka ibonakale ku:

1. I-conductivity ephantsi ye-thermal. Oku kukunciphisa isantya sokusasazeka kobushushu.
2. Ukumelana nobushushu obuphezulu. Izinto eziphathekayo akufanele zisombulule phantsi kokushisa okuphezulu kwaye zilahlekelwe amandla okumelana nokushisa.
3. Ukuxinana okuphantsi. Oku kukunciphisa impembelelo yomthamo wamandla kunye nomlinganiselo wamandla amaninzi.

Izinto ezifanelekileyo zinokuthi okwangoku zithintele ukusasazeka kobushushu kunye nokufunxa ubushushu.

Uhlalutyo lwezinto

• Airgel

I-Airgel ibizwa ngokuba "yeyona nto ilula yokugquma ubushushu". Yenziwa kakuhle kwi-insulation ubushushu kunye nobunzima bokukhanya. Isetyenziswa ngokubanzi kwimodyuli yebhetri yokukhusela ukusasazeka kwe-thermal. Kukho iintlobo ezininzi ze-aerogel, njengesilicon dioxide aerogel, i-aerogel, i-glass fibre airgel kunye ne-pre-oxidized fiber. I-Airgel yokufakelwa kobushushu bezinto ezahlukeneyo zineempembelelo ezahlukeneyo ekubalekeni kwe-thermal. Oku kungenxa yokuba iindidi ze-coefficient ye-thermal conductivity, ehambelana kakhulu nesakhiwo sayo esincinci. Umzobo 2 ubonisa ukubonakala kwe-SEM yezinto ezahlukeneyo ngaphambi nangemva kokutshiswa.

Uphando lubonisa ukuba nangona ukugquma ubushushu befayibha kusezantsi kwixabiso, ukusebenza kokuthintela ukwanda kobushushu kubi kunempahla ye-airgel. Phakathi kweentlobo ezahlukeneyo zemathiriyeli ye-airgel, i-airgel yefiber yangaphambili i-oxidized yenza eyona nto ingcono, njengoko igcina isakhiwo emva kokutshiswa. I-airgel ye-Ceramic fiber nayo isebenza kakuhle ekufakeni ubushushu.

• Izinto zokutshintsha isigaba

Isixhobo sokutshintsha isigaba sikwasetyenziswa ngokubanzi ukucinezela usasazo olubalekayo lwe-thermal ngenxa yokugcinwa kobushushu. I-Wax yi-PCM eqhelekileyo, eneqondo elizinzileyo lokutshintsha kwesigaba. Ngexesha le-thermalBaleka, ubushushu bukhutshwa kakhulu. Ke ngoko iPCM kufuneka ibe phezuluukusebenzayokufunxa ubushushu. Nangona kunjalo, i-wax ine-conductivity yokushisa ephantsi, eya kuchaphazela ukufunxa ubushushu. Ukukhuthaza ukusebenza kwayo, abaphandi bazama ukudibanisa i-wax kunye nezinye izinto, njengokongeza i-particle yensimbi, sebenzisa i-foam yensimbi ukulayisha i-PCM, yongeza.igraphite, i-carbon nano tube okanye i-graphite eyandisiweyo, njl.

Ipolymer yeHydrophilic ikwaluhlobo lwePCM yokuthintela umgaqo weenqwelomoya oshushu. Izinto eziqhelekileyo ze-hydrophilic polymer zezi: i-colloidal silicon dioxide, isisombululo se-calcium chloride egcweleyo,I-Tetraethyl phosphate, ithetraphenyl hydrogen phosphate,si-odium polyacrylate, njl.

•  Imathiriyeli yeHybrid

Ukubaleka kwe-Thermal akunakuthintelwa ukuba sithembele kuphela kwi-aerogel. Ukuphumelelainsulateubushushu, kufuneka sidibanise i-airgel kunye ne-PCM.

Ngaphandle kwezinto ezixutyiweyo, sinokwakha izinto ezinomaleko amaninzi kunye ne-coefficients ye-thermal conductivity eyahlukeneyo kwiindlela ezahlukeneyo. Singasebenzisa imathiriyeli ephezulu ye-thermal conductivity ukuqhuba ubushushu ngaphandle kwemodyuli, kwaye sibeke izinto zokugquma ubushushu phakathi kweeseli ukunqanda ukwanda kwe-thermal.

Ukuqukumbela

Ukulawula ukusasazeka kwe-thermal runaway kuyisifundo esinzima. Abanye abavelisi benze ezinye izisombululo zokucinezela ukusasazeka kobushushu, kodwa basakhangela into entsha, ukuze banciphise iindleko kunye nefuthe kubuninzi bamandla. Sisagxile kuphando lwamva nje. Akukho“impahla super” enokuthi ithintele ngokupheleleyo ukubaleka kwe-thermal. Ifuna imifuniselo emininzi ukufumana ezona zisombululo zilungileyo.