I-electrode enhle yebhethri ye-lithium ion yenziwe ngezinto ze-lithium iron phosphate, ezinezinzuzo ezinkulu mayelana nokusebenza kokuphepha nempilo yomjikelezo. Lezi zingenye yezinkomba zezobuchwepheshe ezibaluleke kakhulu zamabhethri wamandla. Ibhethri ye-Lifepo4 ishaja nempilo yomjikelezo wokulahlwa kufika izikhathi ezingu-1, ukubhoboza akuqhumi, ukushajwa ngokweqile akulula ukuvutha nokuqhuma. Izinto ze-lithium iron phosphate cathode zenza amabhethri e-lithium-ion amakhulu abe lula ukuwasebenzisa ochungechungeni.

I-Lithium Iron Phosphate Cathode Material

Ibhethri ye-Lifepo4 ibhekisela kubhethri ye-lithium ion esebenzisa i-lithium iron phosphate njengento esebenzayo ye-electrode. Izinto zebhethri ze-lithium-ion ze-cathode ikakhulukazi zifaka i-lithium cobalt oxide, i-lithium manganate, i-lithium nicklate, izinto ze-ternary, ne-lithium iron phosphate. Phakathi kwazo, i-lithium cobalt oxide iyimpahla ye-cathode esetshenziswa kumabhethri amaningi e-lithium-ion. Eqinisweni, i-lithium iron phosphate nayo iyinqubo yokuhlanganisa kanye ne-deintercalation. Lesi simiso siyafana ne-lithium cobalt oxide ne-lithium manganese oxide.

Inzuzo yebhethri ye-Lifepo4

1. Ukushaja okuphezulu nokusebenza kahle kokukhipha

Ibhethri ye-Lifepo4 ibhethri lesibili le-lithium ion. Enye yezinto ezisetshenziswa kakhulu amabhethri kagesi. Inezinzuzo ezinhle ngaphezu kwe-nickel-metal hydride namabhethri e-nickel-cadmium. Ibhethri ye-Lifepo4 inokushajwa okuphezulu kanye nokusebenza kahle kokushajwa, okungafinyelela ngaphezu kuka-90% esimweni sokuchithwa, kuyilapho ibhethri le-asidi yomthofu cishe lingama-80%.

2. Ibhethri ye-Lifepo4 inokusebenza kokuphepha okuphezulu

Ibhondi ye-PO ku-lithium iron phosphate crystal izinzile futhi kunzima ukubola. Ngisho nangaphansi kokushisa okuphezulu noma ukukhokhiswa ngokweqile, ngeke kugoqe noma ukushisa njenge-lithium cobalt oxide, futhi ngeke kudale izinto eziqinile ze-oxidizing, ngakho-ke inokuphepha okuhle.

Kubikwa ukuthi ekusebenzeni kwangempela, inani elincane lamasampuli atholakale evutha ekuhlolweni kwe-acupuncture noma i-short-circuit, kodwa akukho kuqhuma okwenzeka. Esivivinyweni sokushajwa kwe-overcharge, kwasetshenziswa amandla kagesi aphezulu ayephakeme izikhathi eziningana kune-voltage yokuzikhipha ngokwakho, futhi kwatholakala ukuthi kwakusenesimo sokuqhuma. Noma kunjalo, ukuphepha kwayo kokushajwa ngokweqile kuba ngcono kakhulu uma kuqhathaniswa namabhethri e-electrolyte e-lithium cobalt oxide ajwayelekile.

3. Ibhethri ye-Lifepo4 inomjikelezo wokuphila omude

Ibhethri ye-Lifepo4 ibhekisela kubhethri ye-lithium ion esebenzisa i-lithium iron phosphate njengento esebenzayo ye-electrode.

Impilo yomjikelezo webhethri le-lead-acid yempilo ende cishe izikhathi ezingama-300, kufika izikhathi ezingama-500. Impilo yomjikelezo webhethri yamandla we-lithium iron phosphate ingaphezu kwezikhathi ezingu-2000, futhi ukushaja okujwayelekile (isilinganiso samahora angu-5) kungafinyelela izikhathi ezingu-2000.

Amabhethri omthofu wekhwalithi efanayo “uhhafu wonyaka omusha, uhhafu wonyaka omdala, nengxenye yonyaka ukuze agcinwe esesimweni esihle” angaba unyaka ongu-1 kuye ku-1.5, kuyilapho amabhethri e-lifepo4 eyoba nempilo yethiyori engu-7 kuya kwengu-8 uma esetshenziswa. ngaphansi kwezimo ezifanayo.

Ukucatshangelwa okuphelele, ngokombono isilinganiso sezindleko zokusebenza singaphezu kokuphindwe kane kunesamabhethri e-lead-acid. Ukukhishwa okuphezulu kwamanje kungasebenzisa i-2C yamanje ephezulu ukushaja nokukhipha ngokushesha. Ngaphansi kweshaja ekhethekile, ibhethri ingashajwa ngokugcwele emizuzwini engu-1.5 ku-1.5C, futhi iqala manje ingafinyelela ku-2C, kuyilapho ibhethri le-lead-acid ingenakho ukusebenza okunjalo.

4. Ukusebenza kahle kwezinga lokushisa

Izinga lokushisa eliphakeme le-lithium iron phosphate lingafinyelela ku-350℃-500℃, kanti i-lithium manganate ne-lithium cobaltate icishe ibe ngu-200℃. Ibanga lokushisa elibanzi elisebenzayo (-20C-+75C), ukumelana nokushisa okuphezulu, i-lithium iron phosphate electric heat heat ingafinyelela ku-350 ° C-500 ° C, kuyilapho i-lithium manganate ne-lithium cobaltate iku-200 ° C kuphela.

5. Ibhethri ye-Lifepo4 ephezulu

Inomthamo omkhulu kunamabhethri ajwayelekile (i-lead-acid, njll.). Umthamo we-monomer ngu-5AH-1000AH.

6. Awukho umphumela wenkumbulo

Uma ibhethri elishajekayo ngokuvamile lingashajwa ngokugcwele, umthamo uzokwehla ngokushesha ngaphansi komthamo olinganiselwe. Lesi simo sibizwa ngokuthi inkumbulo effect. Inkumbulo iyafana namabhethri e-Ni-MH ne-Ni-Cd, kodwa ibhethri le-lifepo4 alinayo le nto. Noma ngabe ibhethri likusiphi isimo, lingashajwa futhi lisetshenziswe ngaphandle kokushajwa nokushajwa kabusha.

7. Ibhethri ye-lifepo4 engasindi

Ibhethri le-lifepo4 lokucaciswa okufanayo nomthamo ngu-2/3 wevolumu yebhethri le-asidi yomthofu, futhi isisindo singu-1/3 webhethri le-asidi yomthofu.

8. Ibhethri ye-Lifepo4 ihambisana nemvelo

Ibhethri ngokuvamile libhekwa njengelingenazo izinsimbi ezisindayo nezinsimbi ezingavamile (ibhethri le-nickel-hydrogen lidinga izinsimbi ezingavamile), elingenabuthi (isitifiketi se-SGS), elingangcolisi, ngokuhambisana nemithetho ye-European RoHS, futhi liluhlaza ngokuphelele. isitifiketi sebhethri.

Ngakho-ke, isizathu sokuthi kungani amabhethri e-lithium ethandwa yimboni ikakhulukazi ngenxa yokucatshangelwa kwemvelo. Ngakho-ke, phakathi nesikhathi “soHlelo Lweminyaka Eyishumi Nanye Lweminyaka Emihlanu”, ibhethri lifakiwe ohlelweni lukazwelonke lokuthuthukiswa kobuchwepheshe obuphezulu “863” futhi selibe iphrojekthi esemqoka kazwelonke yokweseka nesikhuthazo.

Ngokungena kwezwe lami ku-WTO, ukuthunyelwa kwezwe lami kwamabhayisikili kagesi kuzokwanda ngokushesha, futhi amabhayisikili kagesi angena e-Europe nase-United States kudingeke ukuthi afakwe amabhethri angangcoli.

Ukusebenza kwamabhethri e-lithium-ion ikakhulukazi kuncike ezintweni ezinhle nezimbi. I-Lithium iron phosphate yinto yebhethri ye-lithium ebonakale eminyakeni yamuva nje. Ukusebenza kwayo kokuphepha nempilo yomjikelezo ayifani nezinye izinto. Inkomba yezobuchwepheshe ebaluleke kakhulu yebhethri.

Ibhethri ye-Lifepo4 inezinzuzo zokungewona ubuthi, okungangcolisi, ukusebenza kahle kokuphepha, inhlobonhlobo yezinto zokusetshenziswa, intengo ephansi nempilo ende. Kuyinto ekahle ye-cathode yesizukulwane esisha samabhethri e-lithium-ion.