Kubva iyo lithium-ion bhatiri yakapinda mumusika, yakashandiswa zvakanyanya nekuda kweyakanakira yayo senge hupenyu hurefu, yakakura chaiyo hukuru uye isina ndangariro mhedzisiro.Kuderera-kupisa kushandiswa kwemabhatiri e-lithium-ion kune matambudziko akadai sekuderera kwesimba, kuderera kwakakomba, kutadza kutenderera kwekuita, kushanduka kwe lithium, uye unbalanced lithium deintercalation.Zvisinei, nekuenderera mberi kwekuwedzera kwenzvimbo dzekushandiswa, zvirambidzo zvakaunzwa nekudzika-kupisa kwekushanda kwemabhatiri e-lithium-ion zvave zvichinyanya kuoneka.
Sekureva kwemishumo, simba rekuburitsa mabhatiri e-lithium-ion pa -20 ° C inongoita 31.5% yeiyo patembiricha yekamuri.Tembiricha yekushanda yemabhatiri e-lithium-ion echinyakare ari pakati pe -20 ne +60°C.Nekudaro, muminda yeaerospace, indasitiri yemauto, uye mota dzemagetsi, mabhatiri anodiwa kuti ashande zvakajairika pa -40 ° C.Naizvozvo, kuvandudza kuderera-kupisa zvimiro zvelithium-ion mabhatiri ane kukosha kukuru.
Zvinhu zvinodzivirira kuderera-kupisa kwekuita kwe lithium-ion mabhatiri:
1. Munzvimbo yakadzika yekushisa, viscosity ye electrolyte inowedzera, kana kunyange zvishoma zvishoma, zvichiita kuti kuderera kwekutengesa kwe lithiamu-ion battery.
2. Kuwirirana pakati pe electrolyte, electrode yakaipa uye diaphragm inova yakashata munzvimbo yakaderera yekushisa.
3. Munzvimbo dzakaderera-kupisa, lithium-ion battery negative electrodes yakanyungudutswa zvakanyanya, uye simbi inoputika lithium inopindirana ne electrolyte, uye kuiswa kwechigadzirwa kunokonzera kuwanda kweiyo yakasimba electrolyte interface (SEI) kuwedzera.
4. Munzvimbo yakadzika yekushisa, iyo diffusion system ye lithium ion bhatiri muzvinhu zvinoshanda inoderera, uye kutengesa kutengesa kutengesa (Rct) kunowedzera zvakanyanya.
Hurukuro pamusoro pezvinhu zvinokanganisa kuderera-kupisa kwekuita kwe lithium-ion mabhatiri:
Maonero enyanzvi 1: Electrolyte ine simba guru pane yakaderera-tembiricha kushanda kwerithium-ion mabhatiri, uye kuumbwa uye muviri uye kemikari zvinhu zve electrolyte zvine chekuita kwakakosha pakuderera-kupisa kwebhatiri.Matambudziko anotarisana nebhatiri kutenderera pakudziya kwakaderera ndeaya: viscosity ye electrolyte ichawedzera, uye iyo ion conduction kumhanya inononoka, zvichikonzera kusawirirana mumagetsi ekufambisa kumhanya kwedunhu rekunze.Naizvozvo, bhatiri richave rakanyanya polarized uye kubhadharisa uye kubuda simba kunodonha zvakanyanya.Kunyanya kana ichichaja pane tembiricha yakaderera, lithium ions inogona kuumba nyore lithium dendrites pamusoro peiyo negative electrode, zvichiita kuti bhatiri rikundike.
Kuderera kwekushisa kwekushanda kwe electrolyte kwakanyatsoenderana nekuita kwe electrolyte pachayo.Iyo yakakwirira conductivity ye electrolyte inotakura ions nekukurumidza, uye inogona kuita huwandu hwakawanda pakudziya kwakaderera.Kunyanya iyo lithium munyu mu electrolyte inoparadzaniswa, iyo yakawanda nhamba yekutama uye yakakwirira conductivity.Iyo yakakwirira yemagetsi conductivity, inokurumidza ion conductivity, idiki polarization, uye zvirinani kuita kwebhatiri pakudziya kwakaderera.Naizvozvo, yakakwirira yemagetsi conductivity ndiyo inodiwa mamiriro ekuwana yakanaka yakaderera-tembiricha kuita kwe lithium-ion mabhatiri.
Kufambisa kwe electrolyte kunoenderana nekuumbwa kwe electrolyte, uye kuderedza viscosity ye solvent ndiyo imwe yenzira dzekuvandudza conductivity ye electrolyte.Iyo yakanaka fluidity yezvinonyungudutsa pane yakaderera tembiricha ndiyo vimbiso yekutakura ion, uye iyo yakasimba electrolyte membrane inoumbwa ne electrolyte pane iyo isina kunaka electrode pakudziya kwakadzika ndiyo zvakare kiyi yekukanganisa lithium ion conduction, uye RSEI ndiyo inonyanya kuvharira lithium. ion mabhatiri munzvimbo dzakaderera tembiricha.
Maonero enyanzvi 2: Chinhu chikuru chinodzikamisa kudzika-tembiricha kuita kwemabhatiri e-lithium-ion ndiko kuwedzera kwakanyanya Li + diffusion kuramba pakudziya kwakadzika, kwete iyo SEI firimu.
Saka, sei kubata lithium mabhatiri zvakarurama munguva yechando?
1. Usashandise mabhatiri e-lithium munzvimbo dzakaderera dzekushisa
Tembiricha ine simba guru pane lithium mabhatiri.Iyo yakadzika tembiricha, iyo yakaderera basa re lithium mabhatiri, iyo inotungamira zvakananga kukudzikira kukuru mukuchaja uye kuburitsa kushanda zvakanaka.Kazhinji kutaura, tembiricha yekushandisa yemabhatiri e lithium iri pakati -20 madhigirii uye -60 madhigirii.
Kana tembiricha yakadzikira pane 0 ℃, chenjerera kuti usachaja kunze, haugone kuichaja kunyangwe ukaichaja, tinogona kutora bhatiri kubhadharisa mukati (chinyorwa, iva shuwa kuti ugare kure nezvinhu zvinopisa !!! ), kana tembiricha yadzikira pane -20 ℃, bhatiri rinongopinda munzvimbo yakarara uye haigone kushandiswa zvakajairika.Naizvozvo, kuchamhembe ndiko kunyanya mushandisi munzvimbo dzinotonhora.
Kana pasina chaimo chekuchaja chemukati, unofanira kushandisa zvizere kupisa kwasara kana bhatiri rabuda, worichaja muzuva pakarepo wapedza kupaka kuti uwedzere kuchaja uye kudzivirira kushanduka kwe lithium.
2. Ita tsika yekushandisa uye kuchaja
Munguva yechando, kana simba rebhatiri rakanyanya kuderera, tinofanira kurichaja nenguva uye kukudziridza tsika yakanaka yekuchaja kana yangoshandiswa.Rangarira, usambofungidzira simba rebhatiri munguva yechando zvichienderana nehupenyu hwebhatiri.
Lithium bhatiri basa rinoderera munguva yechando, izvo zviri nyore kwazvo kukonzera overdischarge uye overcharge, izvo zvinokanganisa hupenyu hwebasa rebhatiri uye kukonzera tsaona inopisa mune yakaipisisa kesi.Naizvozvo, munguva yechando, isu tinofanirwa kutarisisa zvakanyanya kubhadharisa nekuyerera kwakadzika uye kudzika kuchaja.Kunyanya, zvinofanirwa kutaurwa kuti usamisa mota kwenguva yakareba munzira yekuchaja nguva dzese kuti udzivise kuwandisa.
3. Usagare kure paunenge uchichaja, yeuka kusachaja kwenguva yakareba
Usasiye mota ichichaja kwenguva yakareba nekuda kwekureruka, ingoiburitsa kana yazara.Munguva yechando, nharaunda yekuchaja haifanirwe kunge yakaderera pane 0 ℃, uye kana uchichaja, usabva kure zvakanyanya kudzivirira emergency uye kubata nazvo nenguva.
4. Shandisa yakakosha charger ye lithium mabhatiri paunenge uchichaja
Musika wacho wakazara nenhamba huru yemashaja akaderera.Kushandisa majaja epasi kunogona kukanganisa bhatiri uye kutokonzera moto.Usave nemakaro kutenga zvigadzirwa zvakachipa pasina vimbiso, uye usashandise lead-asidhi bhatiri charger;kana charger yako isinga shandiswe zvakajairwa, rega kuishandisa nekukasika, uye usairasa kuiona.
5. Teerera kuhupenyu hwebheteri uye uitsive nehutsva munguva
Lithium mabhatiri ane hupenyu hurefu.Mamiriro akasiyana uye mamodheru ane hupenyu hwakasiyana hwebhatiri.Pamusoro pekushandisa zvisina kufanira zuva nezuva, hupenyu hwebhatiri hunosiyana kubva kumwedzi yakati wandei kusvika kumakore matatu.Kana mota yakadzimwa kana iine hupenyu hupfupi hwebhatiri, ndapota taura nesu munguva yeLithium bhatiri vashandi vanoibata.
6. Siya magetsi akawandisa kuti urarame munguva yechando
Kuti ushandise mota kazhinji muchirimo gore rinouya, kana bhatiri rikasashandiswa kwenguva yakareba, yeuka kuchaja 50% -80% yebhatiri, uye kuibvisa kubva mumotokari kuti ichengeterwe, uye kuichaja nguva nenguva, kanenge kamwe pamwedzi.Cherechedza: Bhatiri rinofanira kuchengetwa munzvimbo yakaoma.
7. Isa bhatiri nemazvo
Usanyudze bhatiri mumvura kana kuita kuti bhatiri rinyorove;usaisa bhatiri kupfuura 7 layers, kana kutendeudzira bhatiri pasi.
Nguva yekutumira: Zvita-24-2021