I-electrode efanelekileyo yebhetri ye-lithium ion yenziwe nge-lithium iron phosphate material, enenzuzo enkulu ngokubhekiselele ekusebenzeni kokhuseleko kunye nobomi bomjikelezo. Ezi zezinye zezona zibonakaliso ezibalulekileyo zobugcisa beebhetri zamandla. I-Lifepo4 ibhetri ye-1C intlawulo kunye nobomi bomjikelo wokukhupha ukuya kumaxesha angama-2000, i-puncture ayiqhumi, ukugqithiswa kwe-overcharge akulula ukutshisa kunye nokuqhuma. Izinto ze-lithium iron phosphate cathode zenza iibhetri ze-lithium-ion zibe lula ukuzisebenzisa kuthotho.

I-Lithium yentsimbi ye-Phosphate Cathode Material

Ibhetri ye-Lifepo4 ibhekisa kwibhetri ye-lithium ion esebenzisa i-lithium iron phosphate njengesixhobo se-electrode esakhayo. Izinto zebhetri ze-lithium-ion ze-cathode ikakhulu ziquka i-lithium cobalt oxide, i-lithium manganate, i-lithium nicklate, izinto ze-ternary, kunye ne-lithium iron phosphate. Phakathi kwabo, i-lithium cobalt oxide yimpahla ye-cathode esetyenziswa kwiibhetri ezininzi ze-lithium-ion. Ngokomgaqo, i-lithium iron phosphate nayo iyinkqubo yokudibanisa kunye ne-deintercalation. Lo mgaqo ufana ne-lithium cobalt oxide kunye ne-lithium manganese oxide.

Inzuzo yebhetri yeLifepo4

1. Ukutshaja okuphezulu kunye nokusebenza ngokufanelekileyo

Ibhetri ye-Lifepo4 yibhetri yesibini ye-lithium ion. Enye yezinto eziphambili ezisetyenziselwa iibhetri zamandla. Ineenzuzo ezinkulu ngaphezu kwe-nickel-metal hydride kunye neebhetri ze-nickel-cadmium. Ibhetri ye-Lifepo4 inokutshaja okuphezulu kunye nokusebenza kakuhle kokukhupha, enokufikelela ngaphezu kwe-90% kwimeko ekhutshiweyo, ngelixa ibhetri ye-lead-acid malunga ne-80%.

2. Ibhetri ye-Lifepo4 inomsebenzi ophezulu wokhuseleko

I-PO bond kwi-lithium iron phosphate crystal izinzile kwaye inzima ukubola. Nangona ngaphantsi kweqondo lokushisa eliphezulu okanye ukugqithisa, akuyi kudilika okanye ukushisa njenge-lithium cobalt oxide, kwaye ayiyi kubumba izinto ezinamandla ze-oxidizing, ngoko inokhuseleko oluhle.

Kuxelwe ukuba ekusebenzeni kwangempela, inani elincinci leesampuli zafunyanwa ukuba zitshise kwi-acupuncture okanye iimvavanyo ezimfutshane, kodwa akukho kuqhuma kwenzeka. Kulingelo lokutshajiswa kwe-overcharge, intlawulo yombane ephezulu ephindwe kaninzi ngaphezulu kombane ozikhuphayo isetyenzisiwe, kwaye kwafunyaniswa ukuba kusekho into eqhushumbayo. Nangona kunjalo, ukhuseleko lwayo lokutshaja kakhulu luphuculwe kakhulu xa kuthelekiswa nolwelo oluqhelekileyo lwe-electrolyte lithium cobalt oxide iibhetri.

3. I-Lifepo4 ibhetri inobomi bomjikelo omde

Ibhetri ye-Lifepo4 ibhekisa kwibhetri ye-lithium ion esebenzisa i-lithium iron phosphate njengesixhobo se-electrode esakhayo.

Ubomi bomjikelezo webhetri ye-asidi ekhokelela kwixesha elide malunga namaxesha angama-300, ukuya kumaxesha angama-500. Ubomi bomjikelezo webhethri ye-lithium ye-iron phosphate amandla angaphezu kwamaxesha angama-2000, kwaye umrhumo oqhelekileyo (izinga le-5 iiyure) unokufikelela kumaxesha angama-2000.

Iibhetri ze-lead-asidi zomgangatho ofanayo “isiqingatha esitsha sonyaka, isiqingatha sonyaka esidala, kunye nesiqingatha sonyaka sokugcinwa” sinokufikelela kwi-1 ukuya kwi-1.5 yeminyaka, ngelixa iibhetri ze-lifepo4 ziya kuba neminyaka eyi-7 ukuya kwe-8 xa zisetyenziswa. phantsi kweemeko ezifanayo.

Uqwalaselo olubanzi, ngokwethiyori umlinganiselo weendleko-ukusebenza ungaphezulu kokuphindwe kane kuneebhetri ze-asidi yelothe. Ukukhutshwa okuphezulu kwangoku kungasebenzisa i-2C ephezulu ngoku ukukhawuleza ukuhlawula kunye nokukhupha. Ngaphantsi kweshaja ekhethekileyo, ibhetri inokuhlawulwa ngokupheleleyo kwimizuzu ye-1.5 kwi-1.5C, kwaye i-current current inokufikelela kwi-2C, ngelixa ibhetri ye-lead-acid ayinakho ukusebenza okunjalo.

4. Ukusebenza kakuhle kobushushu

Ubushushu obuphezulu be-lithium iron phosphate bunokufikelela kwi-350℃-500℃, ngelixa i-lithium manganate kunye ne-lithium cobaltate zijikeleze i-200℃ kuphela. Uluhlu olubanzi lobushushu bokusebenza (-20C-+ 75C), ukumelana nobushushu obuphezulu, i-lithium iron phosphate electric heat heat inokufikelela kwi-350 ° C-500 ° C, ngelixa i-lithium manganate kunye ne-lithium cobaltate kuphela kwi-200 ° C.

5. Lifepo4 ibhetri umthamo ophezulu

Inomthamo omkhulu kuneebhetri eziqhelekileyo (lead-acid, njl.). Umthamo we-monomer yi-5AH-1000AH.

6. Akukho mpembelelo yenkumbulo

Xa ibhetri egcwalisekayo ihlala ingakhutshwa ngokupheleleyo, umthamo uya kuhla ngokukhawuleza ngaphantsi komthamo olinganisiweyo. Le nto ibizwa ngokuba yinkumbulo yesiphumo. Imemori iyafana neebhetri ze-Ni-MH kunye ne-Ni-Cd, kodwa ibhetri ye-lifepo4 ayinayo le nto. Nokuba ibhetri ikwimeko enjani, inokutshajwa kwaye isetyenziswe ngaphandle kokukhupha nokutshajwa kwakhona.

7. Ubunzima bebhetri yelifepo4

Ibhetri ye-lifepo4 yenkcazo efanayo kunye nomthamo yi-2/3 yomthamo webhetri ye-lead-asidi, kwaye ubunzima yi-1/3 yebhetri ye-lead-acid.

8. Ibhetri yeLifepo4 ihambelana nokusingqongileyo

Ibhetri ngokuqhelekileyo ithathwa njengekhululekile kuzo naziphi na iintsimbi ezinzima kunye neentsimbi ezinqabileyo (ibhetri ye-nickel-hydrogen idinga isinyithi esinqabileyo), i-non-toxic (isiqinisekiso se-SGS), engangcolisi, ngokuhambelana nemimiselo ye-RoHS yaseYurophu, kwaye iluhlaza ngokupheleleyo. isatifikethi sebhetri.

Ke ngoko, isizathu sokuba iibhetri ze-lithium zithandwa lishishini ikakhulu ngenxa yokuqwalaselwa kokusingqongileyo. Ngoko ke, ngexesha leSicwangciso seMinyaka emiHlanu yeshumi elinanye, ibhetri ifakiwe kwisicwangciso sesizwe sophuhliso lobuchwepheshe obuphezulu “863” kwaye ibe yiprojekthi yesizwe ephambili yenkxaso kunye nenkuthazo.

Ngokungena kwelizwe lam kwi-WTO, ilizwe lam elithumela iibhayisikile zombane kumazwe angaphandle liza kunyuka ngokukhawuleza, kwaye iibhayisekile zombane ezingena eYurophu nase-United States kuye kwafuneka ukuba zixhotyiswe ngeebhetri ezingangcolisekiyo.

Ukusebenza kweebhetri ze-lithium-ion ikakhulu kuxhomekeke kwizinto ezintle nezimbi. I-Lithium iron phosphate yimathiriyeli yebhetri ye-lithium evele yavela kwiminyaka yakutshanje. Ukusebenza kwayo kokhuseleko kunye nobomi bomjikelezo awuhambelani nezinye izinto. Eyona nto ibalulekileyo isalathisi sobugcisa bebhetri.

Ibhetri ye-Lifepo4 ineenzuzo zokungabi netyhefu, ukungangcolisi, ukusebenza kakuhle kokhuseleko, uluhlu olubanzi lwezinto ezibonakalayo, ixabiso eliphantsi kunye nobomi obude. Yimpahla efanelekileyo ye-cathode kwisizukulwana esitsha seebhetri ze-lithium-ion.