I-electrode elungileyo yeiibhetri ze-lithium-ionyi-lithium iron phosphate material, eneengenelo ezinkulu ekusebenzeni ngokukhuselekileyo kunye nobomi bomjikelo. Ezi zezinye zezona zibonakaliso zibalulekileyo zobugcisa zebhetri yamandla. Ibhetri yeLifepo4 enokutshaja nokukhupha ubomi bomjikelo we-1C inokufikelelwa amaxesha angama-2000, ukubhoboza akuqhumi, akulula ukutsha nokuqhuma xa itshajiwe kakhulu. Izinto ze-cathode ze-lithium iron phosphate cathode zenza kube lula ukusebenzisa iibhetri ze-lithium-ion ezinkulu kuthotho.
I-lithium iron phosphate njengezinto ze-cathode
Ibhetri yeLifepo4 ibhekisa kwibhetri yelithium-ion esebenzisa i-lithium iron phosphate njengesixhobo se-electrode esihle. Izinto ze-electrode ezilungileyo zeebhetri zelithium-ion ziquka ikakhulu i-lithium cobaltate, i-lithium manganate, i-lithium nickelate, izinto ze-ternary, i-lithium iron phosphate, nezinye izinto ezinjalo. Phakathi kwazo, i-lithium cobaltate zizinto ze-electrode ezilungileyo ezisetyenziswa kwiibhetri ezininzi ze-lithium-ion. Ngokomgaqo, i-lithium iron phosphate ikwayinkqubo yokufakela kunye nokususa i-intercalation. Lo mgaqo ufana ne-lithium cobaltate kunye ne-lithium manganate.
iingenelo zebhetri ye-lifepo4
1. Ukutshaja okuphezulu kunye nokusebenza kakuhle kokukhupha itshaja
Ibhetri yeLifepo4 yibhetri yesibini yelithium-ion. Eyona njongo iphambili yeyamandla ebhetri. Inezibonelelo ezinkulu kuneebhetri zeNI-MH kunye neNi-Cd. Ibhetri yeLifepo4 inokutshaja okuphezulu kwaye ikhupha kakuhle, kwaye ukutshaja kunye nokusebenza kakuhle kokukhupha kunokufikelela ngaphezulu kwe-90% kwimeko yokukhupha, ngelixa ibhetri ye-lead-acid imalunga ne-80%.
2. Ibhetri ye-lifepo4 isebenza kakuhle kwaye ikhuselekile
I-PO bond kwi-lithium iron phosphate crystal izinzile kwaye kunzima ukuyibolisa, kwaye ayiwi okanye ifudumale njenge-lithium cobalt okanye yenze into enamandla yokuxova nokuba kubushushu obuphezulu okanye i-overcharge, kwaye ngaloo ndlela ikhuselekile kakuhle. Kwinkqubo yokwenyani, inxalenye encinci yesampulu ifunyenwe inento evuthayo kuvavanyo lwe-acupuncture okanye lwe-short-circuit, kodwa akukho siganeko sokuqhuma. Kuvavanyo lokuxova, kwasetyenziswa i-high-voltage charge eyayiphezulu kaninzi kune-self-discharge voltage, kwaye kwafunyaniswa ukuba kusekho i-Explosion phenomenon. Nangona kunjalo, ukhuseleko lwayo lokuxova luye lwaphucuka kakhulu xa kuthelekiswa nebhetri eqhelekileyo ye-liquid electrolyte lithium cobalt oxide.
3. Ubomi bebhetri yeLifepo4 obude
Ibhetri yeLifepo4 ibhekisa kwibhetri yelithium-ion esebenzisa i-lithium iron phosphate njengesixhobo se-electrode esihle. Ibhetri ye-lead-acid ehlala ixesha elide inobomi bomjikelo obumalunga namaxesha angama-300, kwaye eyona iphezulu iphindwe ka-500. Ibhetri yamandla e-lithium iron phosphate inobomi bomjikelo obungaphezu kwamaxesha angama-2000, kwaye itshaja eqhelekileyo (isantya seeyure ezi-5) ingasetyenziswa ukuya kuthi ga kumaxesha angama-2000. Ibhetri ye-lead-acid esemgangathweni ofanayo "yinyanga entsha, inyanga endala, ukugcinwa kunye nokugcinwa kwesiqingatha sonyaka", ukuya kuthi ga kwiminyaka eyi-1 ~ 1.5, kwaye ibhetri ye-lifepo4 isetyenziswa phantsi kweemeko ezifanayo, ubomi bethiyori buya kufikelela kwiminyaka eyi-7 ~ 8. Xa ucinga ngokupheleleyo, umlinganiselo wexabiso lokusebenza ngokwethiyori ungaphezulu kwamaxesha amane kuneebhetri ze-lead-acid. Ukukhutshwa kombane ophezulu kunokutshajwa ngokukhawuleza kwaye kukhutshwe ngombane ophezulu we-2C. Phantsi kwetshaja ekhethekileyo, ibhetri inokutshajwa ngokupheleleyo kwimizuzu eyi-1.5 yokutshaja kwe-1.5C, kwaye umbane wokuqala ungafikelela kwi-2C, kodwa ibhetri ye-lead-acid ayinalo olo hlobo lokusebenza.
4. Ukusebenza kakuhle kobushushu
Ubushushu obuphezulu be-lithium iron phosphate bunokufikelela kwi-350 ° C -500 ° C ngelixa i-lithium manganate kunye ne-lithium cobaltate zimalunga ne-200 ° C kuphela. Uluhlu olubanzi lobushushu bokusebenza (-20C–+75C), kunye nokumelana nobushushu obuphezulu, i-lithium iron phosphate electric heating peak inokufikelela kwi-350 ° C-500 °C, ngelixa i-lithium manganate kunye ne-lithium cobalt oxide zikwi-200 °C kuphela.
5. Ibhetri yeLifepo4 inomthamo ophezulu
Inomthamo omkhulu kuneebhetri eziqhelekileyo (i-lead-acid, njl.njl.). Umthamo we-monomer yi-5AH-1000AH.
6. Akukho siphumo senkumbulo
Iibhetri ezinokutshajwa kwakhona zisebenza phantsi kweemeko ezingakhutshwa ngokupheleleyo, kwaye amandla azo aya kuwa ngaphantsi kwamandla alinganisiweyo. Le meko ibizwa ngokuba yi-memory effect. Imemori efana ne-nickel-metal hydride kunye neebhetri ze-nickel-cadmium, kodwa ibhetri ye-lifepo4 ayinayo le meko, nokuba ibhetri ikwimeko enjani na, ingasetyenziswa kunye nokutshajwa, akukho mfuneko yokukhupha nokutshajwa kwakhona.7. Ibhetri ye-lifepo4 ilula
Ibhetri ye-lifepo4 enomthamo ofanayo weenkcukacha yi-2/3 yomthamo webhetri ye-lead-acid, kwaye ubunzima yi-1/3 yebhetri ye-lead-acid.
8. Iibhetri zeLifepo4azinabungozi kokusingqongileyo
Ibhetri ngokubanzi ithathwa njengengenazo naziphi na iintsimbi ezinzima kunye neentsimbi ezinqabileyo (iibhetri zeNi-MH zifuna iintsimbi ezinqabileyo), ezingenabungozi (eziqinisekisiweyo yiSGS), ezingangcolisiyo, ngokuhambelana nemigaqo yeRoHS yaseYurophu, sisiqinisekiso sebhetri eluhlaza ngokupheleleyo. Ke ngoko, isizathu sokuba iibhetri ze-lithium zithandwa lishishini ikakhulu kukuqwalasela okusingqongileyo. Ke ngoko, ibhetri ifakiwe kwisicwangciso sophuhliso lwetekhnoloji ephezulu yesizwe "863" ngexesha le "Isicwangciso seMinyaka emihlanu yeShumi" kwaye ibe yiprojekthi yophuhliso lwenkxaso ephambili yesizwe kunye nokukhuthaza. Ngokungena kweTshayina kwi-WTO, umthamo wokuthunyelwa kweebhayisekile zombane eTshayina uya kwanda ngokukhawuleza, kwaye iibhayisekile zombane ezingena eYurophu nase-United States ziye zafuneka ukuba zixhotyiswe ngeebhetri ezingangcolisiyo. Ukusebenza kwebhetri ye-lithium-ion kuxhomekeke kakhulu kwizinto ezilungileyo nezingalunganga. I-Lithium iron phosphate zizinto zebhetri ye-lithium ezivele kwiminyaka yakutshanje. Ukusebenza kwayo kokhuseleko kunye nobomi bomjikelo azinakuthelekiswa nezinye izinto. Ezona zibonakaliso zobugcisa zibalulekileyo zebhetri. Ibhetri yeLifepo4 ineenzuzo zokuba ayinabungozi, ayingcolisi, isebenza kakuhle ngokhuseleko, inezinto ezahlukeneyo ezikrwada, amaxabiso aphantsi, kwaye iphila ixesha elide. Yinto efanelekileyo kwisizukulwana esitsha se-cathode.iibhetri ze-lithium-ion.