Ibhetri ye-lithium luhlobo lwebhetri esebenzisa isinyithi se-lithium okanye i-lithium alloy njengento engafanelekanga ye-electrode kwaye isebenzisa isisombululo esingenamanzi se-electrolyte.Ibhetri ye-lithium yokuqala yavela kumqambi omkhulu u-Edison.
Iibhetri zeLithium-Iibhetri zeLithium
ibhetri ye-lithium
Ibhetri ye-lithium luhlobo lwebhetri esebenzisa isinyithi se-lithium okanye i-lithium alloy njengento engafanelekanga ye-electrode kwaye isebenzisa isisombululo esingenamanzi se-electrolyte.Ibhetri ye-lithium yokuqala yavela kumqambi omkhulu u-Edison.
Ngenxa yokuba iipropati zeekhemikhali ze-lithium metal zisebenza kakhulu, ukucutshungulwa, ukugcinwa kunye nokusetyenziswa kwe-lithium metal kuneemfuno eziphezulu kakhulu zokusingqongileyo.Ngoko ke, iibhetri ze-lithium azizange zisetyenziswe ixesha elide.
Ngophuhliso lwetekhnoloji ye-microelectronics kwinkulungwane yamashumi amabini, izixhobo ezincinci ziyanda imihla ngemihla, nto leyo ebeka phambili iimfuno eziphezulu zobonelelo lwamandla.Iibhetri ze-lithium ziye zangena kwinqanaba elikhulu lezenzo.
Yaqala ukusetyenziswa kwii-pacemakers zentliziyo.Ngenxa yokuba izinga lokuzikhupha kweebhetri ze-lithium liphantsi kakhulu, i-voltage yokukhupha iyanyuka.Yenza ukuba kube lula ukufaka i-pacemaker emzimbeni womntu ixesha elide.
Iibhetri zeLithium zidla ngokuba namandla ombane angaphezulu kwe-3.0 volts kwaye zifaneleke ngakumbi kubonelelo lombane oludityanisiweyo lwesekethe.Iibhetri zeManganese diokside zisetyenziswa kakhulu kwiikhompyutha, kwiikhaltyhuleyitha, kwiikhamera nakwiiwotshi.
Ukuze kuphuhliswe iintlobo ngentsebenzo engcono, izixhobo ezahlukeneyo ziye zafundwa.Kwaye ke wenze iimveliso njenganini na ngaphambili.Umzekelo, iibhetri ze-lithium sulfur dioxide kunye neebhetri ze-lithium thionyl chloride zihluke kakhulu.Izinto zabo ezisebenzayo ezisebenzayo nazo ziyi-solvent ye-electrolyte.Esi sakhiwo sikhoyo kuphela kwiinkqubo ze-electrochemical ezingekho emanzini.Ke ngoko, uphononongo lweebhetri ze-lithium luye lwakhuthaza nophuhliso lwethiyori ye-electrochemical yeenkqubo ezingenamanzi.Ukongeza kusetyenziso lwezinyibilikisi ezahlukeneyo ezingenamanzi, uphando kwiibhetri ze-polymer thin-film luye lwenziwa.
Ngowe-1992, uSony waphuhlisa ngempumelelo iibhetri ze-lithium-ion.Ukusetyenziswa kwayo okusebenzayo kunciphisa kakhulu ubunzima kunye nomthamo wezixhobo zombane eziphathwayo ezinjengeefowuni eziphathwayo kunye neekhompyuter zeencwadana.Ixesha lokusebenzisa landiswa kakhulu.Ngenxa yokuba iibhetri ze-lithium-ion zingenayo i-chromium yensimbi enzima, xa kuthelekiswa neebhetri ze-nickel-chromium, ungcoliseko lwendalo luyancipha kakhulu.
1. Ibhetri yeLithium-ion
Iibhetri ze-lithium-ion ngoku zohlulwe zibe ziindidi ezimbini: iibhetri ze-lithium-ion (LIBs) kunye neebhetri ze-lithium-ion ze-polymer (PLBs).Phakathi kwazo, ibhetri ye-lithium ion yolwelo ibhekisa kwibhetri yesibini apho i-Li + intercalation ikhompawundi yi-electrode elungileyo kunye nengalunganga.I-electrode efanelekileyo ikhetha i-lithium compound LiCoO2 okanye i-LiMn2O4, kwaye i-electrode engafanelekanga ikhetha i-lithium-carbon interlayer compound.Ibhetri yeLithium-ion yeyona nto ifanelekileyo yokuqhubela phambili uphuhliso kwinkulungwane yama-21 ngenxa yamandla ombane aphezulu okusebenza, ubungakanani obuncinci, ubunzima bokukhanya, amandla aphezulu, akukho siphumo sokukhumbula, akukho ngcoliseko, ukuzikhupha okuphantsi, kunye nobomi bomjikelo omde.
2. Imbali emfutshane yophuhliso lwebhetri ye-lithium-ion
Iibhetri zeLithium kunye neebhetri ze-lithium ion zibhetri ezintsha zamandla aphezulu ziphuhliswe ngempumelelo kwinkulungwane yama-20.I-electrode engafanelekanga yale bhetri yintsimbi ye-lithium, kwaye i-electrode efanelekileyo yi-MnO2, SOCL2, (CFx) n, njl. Yafakwa ekusebenziseni okusebenzayo kwi-1970s.Ngenxa yamandla ayo aphezulu, amandla ombane aphezulu ebhetri, uluhlu olubanzi lobushushu bokusebenza, kunye nobomi obude bokugcina, isetyenziswe ngokubanzi kwizixhobo zombane ezincinci zasemkhosini nezomkhosi, ezinjengeefowuni eziphathwayo, iikhompyuter eziphathwayo, iikhamera zevidiyo, iikhamera, njl., ngokuyinxenye. ukubuyisela iibhetri zemveli..
3. Amathuba ophuhliso lweebhetri ze-lithium-ion
Iibhetri zeLithium-ion zisetyenziswe ngokubanzi kwizixhobo eziphathwayo ezinjengeekhompyuter zelaptop, iikhamera zevidiyo, kunye nonxibelelwano oluphathwayo ngenxa yeenzuzo zabo ezizodwa zokusebenza.Ibhetri ye-lithium-ion enkulu ephuhliswe ngoku iye yavavanywa kwizithuthi zombane, kwaye kuqikelelwa ukuba iya kuba yimithombo yamandla ephambili yezithuthi zombane kwinkulungwane ye-21, kwaye iya kusetyenziswa kwiisathelayithi, i-aerospace kunye nokugcinwa kwamandla. .
4. Umsebenzi osisiseko webhetri
(1) Umbane ovulekileyo wesekethe yebhetri
(2) Ukuchasana kwangaphakathi kwebhetri
(3) Umbane osebenzayo webhetri
(4) Umbane wokutshaja
Umbane wokutshaja ubhekisa kumbane osetyenziswa kuzo zozibini iziphelo zebhetri ngumbane wangaphandle xa kutshajiswa ibhetri yesibini.Iindlela ezisisiseko zokutshaja ziquka ukutshaja ngokuqhubekayo ngoku kunye nokutshaja rhoqo kombane.Ngokuqhelekileyo, ukutshaja ngokuqhubekayo kusetyenziswa, kwaye uphawu lwayo kukuba umbane wokutshaja uzinzile ngexesha lokutshaja.Njengoko ukutshaja kuqhubeka, izinto ezisebenzayo zibuyiselwa, indawo yokuphendula i-electrode iyancipha ngokuqhubekayo, kwaye i-polarization ye-motor inyuka ngokuthe ngcembe.
(5) Umthamo webhetri
Umthamo webhetri ubhekisa kumthamo wombane ofunyenwe kwibhetri, odla ngokubonakaliswa nguC, kwaye iyunithi idla ngokubonakaliswa nguAh okanye mAh.Umthamo yinjongo ebalulekileyo yokusebenza kombane webhetri.Umthamo webhetri udla ngokwahlulwa ngokwethiyori umthamo, umthamo osebenzayo kunye nomthamo olinganisiweyo.
Umthamo webhetri umiselwa ngamandla ee-electrode.Ukuba amandla e-electrodes awalingani, umthamo webhetri uxhomekeke kwi-electrode kunye nomthamo omncinci, kodwa ayisiyiyo yonke isamba samandla ee-electrode ezintle kunye nezibi.
(6) Umsebenzi wokugcina kunye nobomi bebhetri
Enye yeempawu eziphambili zemithombo yamandla ekhemikhali kukuba inokukhulula amandla ombane xa isetyenziswa kwaye igcine amandla ombane xa ungasetyenziswa.Into ebizwa ngokuba ngumsebenzi wokugcina amandla okugcina ukutshaja kwebhetri yesibini.
Ngokuphathelele ibhetri yesibini, ubomi benkonzo yiparameter ebalulekileyo yokulinganisa ukusebenza kwebhetri.Ibhetri yesibini iyatshajwa ize itshajwe kube kanye, ebizwa ngokuba ngumjikelo (okanye umjikelo).Phantsi komlinganiselo othile wokutshaja nokukhupha, inani lamaxesha okutshaja nokukhupha ibhetri enokumelana nawo phambi kokuba umthamo webhetri ufikelele kwixabiso elithile ubizwa ngokuba ngumjikelo wokusebenza kwebhetri yesibini.Iibhetri zeLithium-ion zinomsebenzi ogqwesileyo wokugcina kunye nobomi bomjikelezo omde.
Iibhetri zeLithium - Iimpawu
A. Ukuxinana kwamandla aphezulu
Ubunzima bebhetri ye-lithium-ion sisiqingatha se-nickel-cadmium okanye i-nickel-hydrogen ibhetri yomthamo ofanayo, kwaye umthamo ngu-40-50% we-nickel-cadmium kunye ne-20-30% yebhetri ye-nickel-hydrogen. .
B. Umbane oPhezulu
I-voltage yokusebenza yebhetri ye-lithium-ion enye yi-3.7V (ixabiso eliqhelekileyo), elilingana ne-nickel-cadmium ezintathu okanye iibhetri ze-nickel-metal hydride ezixhunywe kwichungechunge.
C. Akukho lungcoliso
Iibhetri zeLithium-ion aziqulathanga isinyithi esiyingozi njengecadmium, ilothe, kunye nemercury.
D. Ayiqulathanga i-metallic lithium
Iibhetri ze-lithium-ion aziqukethe i-lithium yensimbi kwaye ngoko ke azikho phantsi kwemimiselo efana nokuvinjelwa kokuthwala iibhetri ze-lithium kwinqwelo-moya.
E. Ubomi bomjikelo ophezulu
Ngaphantsi kweemeko eziqhelekileyo, iibhetri ze-lithium-ion zinokuba nezijikelezo ezingaphezu kwe-500 zokukhutshwa kwentlawulo.
F. Akukho mpembelelo yenkumbulo
Umphumo wememori ubhekisela kwinto yokuba umthamo webhetri ye-nickel-cadmium uyancitshiswa ngexesha lokutshaja kunye nokukhupha.Iibhetri ze-lithium-ion azinayo le mpembelelo.
G. Ukutshaja ngokukhawuleza
Ukusebenzisa ishaja eqhubekayo yangoku kunye nesigxina se-voltage ene-voltage elinganisiweyo ye-4.2V inokuhlawula ngokupheleleyo ibhetri ye-lithium-ion kwiyure enye ukuya kwiiyure ezimbini.
Ibhetri yeLithium-Umgaqo kunye noLwakhiwo lwebhetri yeLithium
1. Isakhiwo kunye nomgaqo-siseko wokusebenza webhetri ye-lithium ion: Ibhetri ebizwa ngokuba yi-lithium ion ibhekisela kwibhetri yesibini eyenziwe ngamacandelo amabini angakwazi ukubuyisela ukuguqulwa kunye nokuqhawula i-lithium ion njenge-electrode efanelekileyo kunye ne-negative.Abantu babiza le bhetri ye-lithium-ion ngendlela ekhethekileyo, exhomekeke ekugqithisweni kwee-ion ze-lithium phakathi kwee-electrode ezilungileyo kunye ne-negative ukugqiba intlawulo yebhetri kunye nokusebenza kokukhupha, njenge "ibhetri yesitulo esishukumayo", eyaziwa ngokuba yi "lithium battery" .Thatha i-LiCoO2 njengomzekelo: (1) Xa ibhetri ihlawuliswa, i-lithium ion idityanisiwe kwi-electrode efanelekileyo kwaye idibene kwi-electrode engalunganga, kwaye ngokuphambeneyo xa ikhupha.Oku kufuna ukuba i-electrode ibe kwimeko ye-lithium intercalation ngaphambi kokuhlanganisana.Ngokuqhelekileyo, i-lithium intercalation transition metal oxide enokubakho ngaphezu kwe-3V ngokumalunga ne-lithium kwaye izinzile emoyeni ikhethwa njenge-electrode efanelekileyo, njenge-LiCoO2, i-LiNiO2, i-LiMn2O4, i-LiFePO4.(2) Kwizinto eziphathekayo ze-electrode ezingalunganga, khetha iikhompawundi ze-lithium ezidibeneyo ezinokubakho kufutshane ne-lithium enokwenzeka.Umzekelo, imathiriyeli yekhabhoni eyahlukeneyo ibandakanya igraphite yendalo, igraphite yokwenziwa, i-carbon fiber, i-mesophase spherical carbon, njl.njl. kunye neeoxide zesinyithi, kuquka i-SnO, i-SnO2, i-Tin composite oxide SnBxPyOz (x=0.4～0.6, y=0.6～0.4, z= (2+3x+5y)/2) njl.
ibhetri ye-lithium
2. Ibhetri ngokubanzi ibandakanya: i-positive, negative, electrolyte, separator, lead positive, negative plate, central terminal, insulating material (insulator), ivalve yokhuseleko (i-safevent), i-ring yokutywina (i-gasket), i-PTC (i-terminal yokulawula ubushushu obuhle), imeko yebhetri.Ngokuqhelekileyo, abantu baxhalabele ngakumbi i-electrode efanelekileyo, i-electrode engafanelekanga, kunye ne-electrolyte.
ibhetri ye-lithium
Uthelekiso lwesakhiwo sebhetri yeLithium-ion
Ngokwezinto ezahlukeneyo ze-cathode, ihlulwe ibe yintsimbi ye-lithium, i-cobalt lithium, i-manganese lithium, njl.;
Ukususela kuluhlu lwemilo, ngokuqhelekileyo ihlukaniswe ibe yi-cylindrical kunye ne-square, kunye ne-polymer lithium ion nayo inokwenziwa kuyo nayiphi na imilo;
Ngokwezixhobo ezahlukeneyo ze-electrolyte ezisetyenziswa kwiibhetri ze-lithium-ion, iibhetri ze-lithium-ion zinokwahlulwa zibe ngamacandelo amabini: iibhetri ze-lithium-ion (LIB) kunye neebhetri ze-lithium-ion zelizwe.I-PLIB) luhlobo lwebhetri ye-lithium-ion eqinileyo.
i-electrolyte
Iqokobhe / Isithintelo sePakeji uMqokeleli wangoku
Ulwelo lwebhetri ye-lithium-ion Ulwelo lwentsimbi engatyiwayo, ialuminiyam 25μPE ifoyile yobhedu kunye nefoyile yealuminium yepolymer lithium-ion ibhetri ecolloidal ipolymer aluminiyam/ifilimu ehlanganisiweyo yePP ngaphandle komqobo okanye enye i-μPE yefoyile yobhedu kunye nefoyile yealuminium
Iibhetri zeLithium-Umsebenzi weebhetri zeLithium Ion
1. Ubuninzi bamandla aphezulu
Xa kuthelekiswa ne-NI / CD okanye iibhetri ze-NI / MH zomthamo ofanayo, iibhetri ze-lithium-ion zilula ngobunzima, kwaye umthamo wazo wamandla athile yi-1.5 ukuya ku-2 amaxesha ale ntlobo zimbini zeebhetri.
2. Amandla ombane aphezulu
Iibhetri ze-lithium-ion zisebenzisa i-electronegative element-containing electrode ze-lithium ukuphumeza i-terminal voltages ukuya kutsho kwi-3.7V, ephindwe kathathu i-voltage ye-NI/CD okanye i-NI/MH yebhetri.
3. Ayingcolisi, ilungele ukusingqongileyo
4. Ubomi bomjikelo omde
Ubomi budlula amaxesha angama-500
5. Umthamo ophezulu womthwalo
Iibhetri ze-lithium-ion zinokukhutshwa ngokuqhubekayo ngombane omkhulu, ukuze le bhetri isetyenziswe kwizixhobo ezinamandla kakhulu ezifana neekhamera kunye neekhompyutha zelaptop.
6. Ukhuseleko olugqwesileyo
Ngenxa yokusetyenziswa kwezinto ezigqwesileyo ze-anode, ingxaki yokukhula kwe-lithium dendrite ngexesha lokutshaja kwebhetri iyoyiswa, ephucula kakhulu ukhuseleko lweebhetri ze-lithium-ion.Kwangaxeshanye, izincedisi ezikhethekileyo ezifumanekayo zikhethwa ukuqinisekisa ukhuseleko lwebhetri ngexesha lokusetyenziswa.
Ibhetri yeLithium -Indlela yokutshaja ibhetri yeLithium ion
Indlela 1. Ngaphambi kokuba ibhetri ye-lithium-ion ishiye i-factory, umenzi uye wenza unyango olusebenzayo kunye nokuhlawula kwangaphambili, ngoko ibhetri ye-lithium-ion inamandla okusala, kwaye ibhetri ye-lithium-ion ihlawuliswa ngokwexesha lohlengahlengiso.Eli xesha lohlengahlengiso kufuneka lenziwe izihlandlo ezi-3 ukuya kwezi-5 ngokupheleleyo.Ukukhupha.
Indlela yesi-2. Ngaphambi kokutshaja, ibhetri ye-lithium-ion ayifuni ukuba ikhutshwe ngokukodwa.Ukukhutshwa okungafanelekanga kuya kulimaza ibhetri.Xa utshaja, zama ukusebenzisa ukutshaja okucothayo kwaye unciphise ukutshaja okukhawulezayo;ixesha akufanele lidlule iiyure ezingama-24.Kuphela emva kokuba ibhetri ihlawulwe yonke imijikelezo emithathu ukuya kwemihlanu kunye nokukhupha iikhemikhali zayo zangaphakathi "zisebenze" ngokupheleleyo ukuze zisetyenziswe ngokupheleleyo.
Indlela yesi-3. Nceda usebenzise itshaja yokuqala okanye itshaja yebrendi ethembekileyo.Kwiibhetri ze-lithium, sebenzisa ishaja ekhethekileyo yeebhetri ze-lithium kwaye ulandele imiyalelo.Ngaphandle koko, ibhetri iya konakaliswa okanye ibe sengozini.
Indlela yesi-4. Ibhetri esanda kuthengwa yi-lithium ion, ngoko ke i-3 yokuqala ukuya ku-5 amaxesha okutshaja ngokuqhelekileyo ibizwa ngokuba lixesha lohlengahlengiso, kwaye kufuneka ihlawulwe ngaphezu kweeyure ze-14 ukuqinisekisa ukuba umsebenzi we-lithium ion usebenze ngokupheleleyo.Iibhetri ze-lithium-ion azinampembelelo yememori, kodwa zine-inertness enamandla.Kufuneka zisebenze ngokupheleleyo ukuqinisekisa ukusebenza kakuhle kwizicelo ezizayo.
Indlela ye-5. Ibhetri ye-lithium-ion kufuneka isebenzise ishaja ekhethekileyo, ngaphandle koko ayinakufikelela kwi-saturation state kwaye ichaphazele umsebenzi wayo.Emva kokutshaja, kuphephe ukuyibeka kwitshaja ngaphezu kweeyure ezili-12, kwaye yahlule ibhetri kwimveliso ye-elektroniki ephathwayo xa ingasetyenziswa ixesha elide.
Ibhetri yeLithium - sebenzisa
Ngophuhliso lwetekhnoloji ye-microelectronics kwinkulungwane yamashumi amabini, izixhobo ezincinci ziyanda imihla ngemihla, nto leyo ebeka phambili iimfuno eziphezulu zobonelelo lwamandla.Iibhetri ze-lithium ziye zangena kwinqanaba elikhulu lezenzo.
Yaqala ukusetyenziswa kwii-pacemakers zentliziyo.Ngenxa yokuba izinga lokuzikhupha kweebhetri ze-lithium liphantsi kakhulu, i-voltage yokukhupha iyanyuka.Yenza ukuba kube lula ukufaka i-pacemaker emzimbeni womntu ixesha elide.
Iibhetri zeLithium zidla ngokuba namandla ombane angaphezulu kwe-3.0 volts kwaye zifaneleke ngakumbi kubonelelo lombane oludityanisiweyo lwesekethe.Iibhetri zeManganese diokside zisetyenziswa kakhulu kwiikhompyutha, kwiikhaltyhuleyitha, kwiikhamera nakwiiwotshi.
Umzekelo wokusetyenziswa
1. Zininzi iipakethi zebhetri ezithatha indawo yokulungiswa kweipakethi yebhetri: ezifana nezo zisetyenziswa kwiikhompyutha zamanqaku.Emva kokulungiswa, kufumaniseka ukuba xa le pakethi yebhetri yonakele, kuphela iibhetri zodwa ezineengxaki.Inokutshintshwa ngebhetri ye-lithium enye efanelekileyo.
2. Ukwenza itotshi encinci yokukhanya okuphezulu Umbhali wasebenzisa ibhetri ye-lithium eyodwa ye-3.6V1.6AH ene-tube emhlophe ekhanyayo yokukhanya okukhanyayo ukwenza itotshi encinci, ekulula ukuyisebenzisa, icwecwe kwaye intle.Kwaye ngenxa yomthamo omkhulu webhetri, ingasetyenziselwa isiqingatha seyure ubusuku ngabunye, kwaye isetyenziswe ngaphezulu kweenyanga ezimbini ngaphandle kokutshaja.
3. Enye i-3V yamandla ombane
Ngenxa yokuba i-single-cell lithium ibhetri yombane yi-3.6V.Ngoko ke, ibhetri enye kuphela ye-lithium inokutshintsha iibhetri ezimbini eziqhelekileyo zokubonelela amandla kwizixhobo ezincinci zendlu ezifana nerediyo, i-walkmans, iikhamera, njl., okungekho ukukhanya kuphela, kodwa ihlala ixesha elide.
I-lithium-ion ibhetri ye-anode impahla - i-lithium titanate
Inokudibaniswa ne-lithium manganate, izinto ze-ternary okanye i-lithium iron phosphate kunye nezinye izinto ezintle zokwenza i-2.4V okanye i-1.9V yeebhetri ze-lithium ion yesibini.Ukongeza, inokusetyenziswa njenge-electrode efanelekileyo ukwenza ibhetri ye-lithium ye-1.5V nge-metal lithium okanye i-lithium alloy negative electrode ibhetri yesibini.
Ngenxa yokhuseleko oluphezulu, ukuzinza okuphezulu, ixesha elide kunye neempawu eziluhlaza ze-lithium titanate.Kunokuqikelelwa ukuba izinto ze-lithium titanate ziya kuba yinto engafanelekanga ye-electrode yesizukulwana esitsha seebhetri ze-lithium ion kwiminyaka eyi-2-3 kwaye isetyenziswe ngokubanzi kwizithuthi zamandla amatsha, izithuthuthu zombane kunye nezo zifuna ukhuseleko oluphezulu, ukuzinza okuphezulu kunye nomjikelezo omde.indawo yesicelo.I-voltage yokusebenza ye-lithium titanate ibhetri yi-2.4V, i-voltage ephezulu yi-3.0V, kwaye i-charge current ifike kwi-2C.
Ukwakhiwa kwebhetri yeLithium titanate
I-electrode enhle: i-lithium iron phosphate, i-lithium manganate okanye izinto ze-ternary, i-lithium nickel manganenate.
I-electrode engalunganga: izinto ze-lithium titanate.
Isithintelo: Isithintelo sebhetri ye-lithium yangoku enekhabhoni njenge-electrode engalunganga.
I-Electrolyte: I-electrolyte ye-lithium yebhetri enekhabhoni njenge-electrode engeyiyo.
Icasi yebhetri: Ikesi yebhetri yelithium enekhabhoni njenge-electrode engeyiyo.
Iingenelo zeebhetri ze-lithium titanate: ukukhetha izithuthi zombane ezithatha indawo yezithuthi zepetroli yiyona nto ingcono kakhulu yokusombulula ungcoliseko lwendalo edolophini.Phakathi kwabo, iibhetri zamandla e-lithium-ion ziye zatsala ingqalelo enkulu yabaphandi.Ukuze kuhlangatyezwane neemfuno zezithuthi zombane kwibhodi ye-lithium-ion iibhetri zamandla, uphando kunye nophuhliso Izinto ezingalunganga ezinokhuseleko oluphezulu, ukusebenza kakuhle kwesantya kunye nokuphila ixesha elide ziindawo ezishushu kunye nobunzima.
Ii-electrode ezingalunganga ze-lithium-ion zebhetri zisebenzisa ikakhulu imathiriyeli yekhabhoni, kodwa kusekho izinto ezingeloncedo ekusetyenzisweni kweebhetri ze-lithium kusetyenziswa ikhabhoni njenge-electrode engalunganga:
1. I-Lithium dendrites iyancipha ngokulula ngexesha lokutshaja, okubangela isiphaluka esifutshane sebhetri kunye nokuchaphazela umsebenzi wokhuseleko webhetri ye-lithium;
2. Kulula ukwenza ifilimu ye-SEI, ekhokelela kwintlawulo ephantsi yokuqala kunye nokukhutshwa kwamandla kunye nomthamo omkhulu ongenakuguqulwa;
3. Oko kukuthi, i-voltage yeqonga yezinto zekhabhoni iphantsi (kufuphi ne-lithium yensimbi), kwaye kulula ukubangela ukubola kwe-electrolyte, okuya kuzisa imingcipheko yokhuseleko.
4. Kwinkqubo yokufakwa kwe-lithium ion kunye nokukhutshwa, umthamo utshintsha kakhulu, kwaye ukuzinza komjikelo kubi.
Xa kuthelekiswa nezinto zekhabhoni, i-spinel-type Li4Ti5012 ineenzuzo ezibalulekileyo:
1. Yimpahla ye-zero-strain kwaye inomsebenzi omhle wokujikeleza;
2. I-voltage yokukhupha izinzile, kwaye i-electrolyte ayiyi kubola, iphucula ukusebenza kokhuseleko lweebhetri ze-lithium;
3. Xa kuthelekiswa nezixhobo ze-carbon anode, i-lithium titanate ine-coefficient ephezulu ye-lithium ion diffusion (2 * 10-8cm2 / s), kwaye inokuhlawuliswa kwaye ikhutshwe kwizinga eliphezulu.
4. Ikhono le-lithium titanate liphezulu kunelo lithium yensimbi ecocekileyo, kwaye akulula ukuvelisa i-lithium dendrites, enika isiseko sokuqinisekisa ukhuseleko lweebhetri ze-lithium.
isekethe yokugcina
Iqukethe i-transistors yempembelelo yentsimi ezimbini kunye nebhloko edibeneyo yokugcina i-S-8232.Ityhubhu yokulawula i-FET2 kunye netyhubhu yokulawula i-overdischarge FET1 idityaniswe kuthotho kwisekethe, kwaye amandla ombane ebhetri abekwe iliso kwaye alawulwe yi-IC yolondolozo.Xa amandla ombane ebhetri enyuka aye kwi-4.2V, ityhubhu yokugcina i-FET1 iyacinywa, kwaye ukutshaja kuyekiwe.Ukuze ugweme ukungasebenzi kakuhle, i-capacitor yokulibaziseka yongezwa ngokubanzi kwisiphaluka sangaphandle.Xa ibhetri ikwimo yokuchithwa, amandla ombane ebhetri ehla aye ku-2.55.
Ixesha lokuposa: Mar-30-2023