Imeko yendawo apho ibhetri ye-lithium ye-polymer isetyenziswa nayo ibaluleke kakhulu ekuphembeleleni ubomi bomjikelezo.Phakathi kwabo, ubushushu be-ambient yinto ebaluleke kakhulu.Ubushushu obuphantsi kakhulu okanye obuphezulu kakhulu bunokuchaphazela ubomi bomjikelo weebhetri ze-Li-polymer.Kwizicelo zebhetri zamandla kunye nezicelo apho ubushushu bunempembelelo enkulu, ulawulo lwe-thermal yeebhetri ze-Li-polymer luyadingeka ukuze kuphuculwe ukusebenza kakuhle kwebhetri.

Izizathu zokutshintsha kweqondo lokushisa langaphakathi kwi-Li-polymer battery pack

KubaIibhetri ze-Li-polymer, Isizukulwana sobushushu sangaphakathi kukusabela kobushushu, ubushushu bepolarization kunye nobushushu beJoule.Esinye sezizathu eziphambili zokunyuka kweqondo lokushisa kwe-Li-polymer ibhetri kukunyuka kweqondo lokushisa okubangelwa ukuchasana kwangaphakathi kwebhetri.Ukongeza, ngenxa yokubekwa okuxineneyo komzimba weseli eshushu, ummandla ophakathi ubophelelekile ukuba uqokelele ubushushu obuninzi, kwaye ummandla womda ungaphantsi, okwandisa ukungalingani kwamaqondo obushushu phakathi kweeseli zomntu ngamnye kwibhetri ye-Li-polymer.

Iindlela zokulawula ubushushu bebhetri ye-polymer lithium

1. Uhlengahlengiso lwangaphakathi

Isivamvo sobushushu siya kufakwa koyena ummeli, olona tshintsho lobushushu likhulu kwindawo, ngakumbi elona qondo liphezulu nelisezantsi lobushushu, kunye neziko le-polymer lithium ibhetri yokuqokelela ubushushu kwindawo enamandla ngakumbi.

1. Ummiselo wangaphandle

Ukulawulwa kokupholisa: Okwangoku, ngokuqwalasela ubunzima bendlela yokulawula i-thermal yeebhetri ze-Li-polymer, ininzi yabo ithatha isakhiwo esilula sendlela yokupholisa umoya.Kwaye ngokuqwalasela ukufana kokutshatyalaliswa kobushushu, uninzi lwazo lwamkela indlela yokungenisa umoya ehambelanayo.

1. Ukulawulwa kobushushu: eyona ndlela ilula yokufudumeza kukongeza iipleyiti zokufudumeza phezulu nasezantsi kwebhetri ye-Li-polymer ukuphumeza ukufudumeza, kukho umgca wokufudumeza ngaphambi nangemva kwebhetri nganye ye-Li-polymer okanye ukusetyenziswa kwefilimu yokufudumeza ejikelezileyo.Li-polymer ibhetrizokufudumeza.

Izizathu eziphambili zokunciphisa umthamo weebhetri ze-lithium polymer kumaqondo aphantsi

1. Ukungahambi kakuhle kwe-electrolyte, ukumanzisa okungahambi kakuhle kunye / okanye ukunyanzeliswa kwe-diaphragm, ukufuduka okucothayo kwe-lithium ion, ukuhanjiswa kwexabiso elincinci kwi-electrode / electrolyte interface, njl.

2. Ukongezelela, i-impedance ye-membrane ye-SEI iyanda kwiqondo lokushisa eliphantsi, linciphisa izinga le-lithium ion elidlula kwi-electrode / electrolyte interface.Esinye sezizathu zokunyuka kwe-impedance yefilimu ye-SEI kukuba kulula ukuba i-lithium ion iphume kwi-electrode engafanelekanga kumaqondo aphantsi kwaye kunzima ukuyifaka.

3. Xa utshaja, isinyithi se-lithium siya kubonakala kwaye siphendule nge-electrolyte ukwenza ifilimu entsha ye-SEI yokugubungela ifilimu ye-SEI yasekuqaleni, eyandisa i-impedance yebhetri ngaloo ndlela ibangela ukuba umthamo webhetri unciphise.

Ubushushu obuphantsi ekusebenzeni kweebhetri ze-lithium polymer

1. ukushisa okuphantsi kwintlawulo kunye nokukhupha ukusebenza

Njengoko iqondo lobushushu liyancipha, i-voltage yokukhupha i-avareji kunye nomthamo wokukhuphaiibhetri ze-lithium polymerziyancipha, ngakumbi xa iqondo lobushushu -20 ℃, umthamo wokukhupha ibhetri kunye ne-avareji yokukhupha umbane wehla ngokukhawuleza.

2. Ukushisa okuphantsi ekusebenzeni komjikelezo

Umthamo webhetri ubola ngokukhawuleza kwi -10 ℃, kwaye umthamo uhlala kuphela i-59mAh / g emva kwemijikelezo ye-100, kunye ne-47.8% yokubola kwamandla;ibhetri ekhutshwe kwiqondo lokushisa eliphantsi livavanywa kwiqondo lokushisa lokushisa ukutshaja kunye nokukhutshwa, kunye nokusebenza kokubuyisela amandla kuhlolwa kwixesha.Umthamo wayo ubuyiselwe kwi-70.8mAh / g, kunye nokulahleka komthamo we-68%.Oku kubonisa ukuba umjikelo ophantsi wobushushu bebhetri unempembelelo enkulu ekufumaneni amandla ebhetri.

3. Impembelelo yeqondo lokushisa eliphantsi ekusebenzeni kokhuseleko

Ukutshaja ibhetri ye-polymer lithium yinkqubo ye-lithium ion ephuma kwi-electrode efanelekileyo ngokusebenzisa i-electrolyte migration efakwe kwizinto ezimbi, ii-ion ze-lithium ukuya kwi-polymerization ye-electrode negative, ngee-athomu zekhabhoni ezintandathu zibamba i-lithium ion.Kwiqondo lokushisa eliphantsi, umsebenzi we-chemical reaction uyancitshiswa, ngelixa ukufuduka kwe-lithium ion kuya kuhamba kancinci, i-lithium ion kumphezulu we-electrode engalunganga ayizange ifakwe kwi-electrode engalunganga iye yancitshiswa yaba yintsimbi ye-lithium, kwaye imvula yamanzi umphezulu we-electrode engalunganga ukwenza i-lithium dendrites, enokuthi igqobhoze ngokulula i-diaphragm ebangela isiphaluka esifutshane kwibhetri, enokonakalisa ibhetri kwaye ibangele iingozi zokhuseleko.

Ekugqibeleni, sisafuna ukukukhumbuza ukuba iibhetri ze-lithium polymer zingcono ukuba zingahlawuliswa ebusika kumaqondo aphantsi, ngenxa yokushisa okuphantsi, i-lithium ion efakwe kwi-electrode engalunganga iya kuvelisa iikristale ze-ion, zigqobhoze ngokuthe ngqo i-diaphragm, ebangela ngokubanzi isekethe micro-short ichaphazela ubomi kunye nokusebenza, ugqabhuko-dubulo ngqo ngqo.Ke abanye abantu babonisa ukutshaja kwebhetri ye-polymer ye-lithium yasebusika ayinakubizwa, oku kungenxa yenxalenye yenkqubo yolawulo lwebhetri ngenxa yokhuseleko lwemveliso.