ⅠCov ntsiab lus ntawm Lithium Iron Phosphate Batteries (LiFePO4)
Lub roj teeb lithium hlau phosphate (LiFePO4) yog dab tsi? LiFePO4 roj teeb siv lithium hlau phosphate ua cov khoom siv electrode zoo. Qhov ntsuas hluav taws xob ntawm ib lub roj teeb LiFePO4 yog 3.2V, thiab tus nqi txiav tawm yog 3.6V ~ 3.65V. LiFePO4 txhawb kev nthuav dav thiab khaws cov hluav taws xob loj loj tom qab tsim lub zog cia. Lub LiFePO4 roj teeb lub zog cia lub cev muaj xws li LiFePO4 roj teeb pob, Roj teeb tswj System (BMS), rectifier, inverter, nruab nrab saib xyuas qhov system, transformer, thiab lwm yam.
Raws li peb txhua tus paub, kev lag luam kev lag luam tseem nce ntxiv, uas yog txiav txim siab los ntawm cov yam ntxwv ntawm LiFePO4 roj teeb:
1. Kev nyab xeeb zoo, lub neej voj voog ntev, tsis muaj hluav taws kub thiab tsis tawg thaum overcharged;
2. Kev ua haujlwm kub zoo, ua haujlwm kub ntau 20 degree ~ 70 degree;
3. Lub neej voj voog ntev, Ntau dua lossis sib npaug rau 4000 zaug;
4. Fast charging, with 1C-5C fast charging capability, significantly
txo lub sijhawm them nyiaj;
5. Kev ua haujlwm siab voltage thiab siab zog ceev
6. Kev tiv thaiv ntsuab thiab ib puag ncig, tsis muaj tshuaj lom, tsis muaj kuab paug rau ib puag ncig;
7. Cov txiaj ntsig tseem ceeb ntawm kev lag luam, lub zog tauj dua tshiab;
Ⅱ: Cov yam ntxwv ntawm LiFePO4 roj teeb:
1. Cov electrode zoo: LiFePO4 nrog olivine qauv, qhov zoo electrode txuas aluminium ntawv ci;
2. Cov electrode tsis zoo: muaj cov pa roj carbon lossis graphite; qhov tsis zoo electrode txuas ib daim ntawv tooj liab.
3. Diaphragm: Lub diaphragm cais lub roj teeb ntawm qhov zoo electrode; cov khoom siv diaphragm yog ib qho polymer;
4. Electrolytes: xws li lithium hexafluorophosphate, lithium perchlorate, lithium tetrafluoroborate, thiab lwm yam.
5. Electrolyte: ethylene carbonate, propylene carbonate, dimethyl carbonate, ethyl butyrate, fluoroethylene carbonate, lithium bis-oxalate borate, lithium hexafluorophosphate.
6. Cov ntaub ntawv rwb thaiv tsev, kev nyab xeeb li qub, sealing rings, plhaub, thiab lwm yam.
Ⅲ: Lub hauv paus ntsiab lus them thiab tawm ntawm LiFePO4 roj teeb
Hauv luv luv, thaum lub sij hawm them nyiaj, cov lithium ions Li ntxiv rau hauv LiFePO4 zoo electrode tsiv mus rau qhov tsis zoo electrode los ntawm cov polymer cais; Thaum lub sijhawm tso tawm, cov lithium ions Li ntxiv rau hauv qhov tsis zoo electrode tsiv mus rau qhov zoo electrode dua los ntawm qhov sib cais.
Lub hauv paus ntsiab lus them nyiaj: Thaum lub roj teeb them, lithium ions tsiv los ntawm LiFePO4 siv lead ua mus rau qhov chaw siv lead ua. Nyob rau hauv lub zog hluav taws xob, Li ntxiv nkag mus rau hauv electrolyte, dhau los ntawm kev sib cais, ces tsiv mus rau saum npoo ntawm graphite siv lead ua los ntawm electrolyte, thiab ces intercalates rau hauv graphite lattice. Cov electrons ntws mus rau aluminium foil collector los ntawm tus neeg xyuas pib. Dhau los ntawm lub tab, tus ncej zoo, lub voj voog sab nraud, tus ncej tsis zoo, thiab tus ncej tsis zoo, ntws mus rau cov khoom siv tooj liab ntawm qhov tsis zoo. Thaum kawg, nws ntws mus rau graphite tsis zoo electrode los ntawm tus neeg xyuas pib kom sib npaug tus nqi ntawm qhov tsis zoo electrode. Tom qab cov lithium ions yog deintercalated los ntawm lithium hlau phosphate, lithium hlau phosphate hloov mus rau hauv hlau phosphate.
Lub hauv paus ntsiab lus tso tawm: Thaum lub roj teeb tawm, lithium ions yog deintercalated los ntawm graphite siv lead ua, nkag mus rau hauv electrolyte, thiab tom qab ntawd dhau los ntawm qhov sib cais, tsiv mus rau saum npoo ntawm lithium hlau phosphate siv lead ua los ntawm electrolyte, thiab tom qab ntawd rov ntxig rau hauv lub lattice. ntawm lithium hlau phosphate. Electrons ntws mus rau lub copper foil collector los ntawm tus neeg xyuas pib. Thiab ntws mus rau aluminium foil collector ntawm qhov zoo electrode los ntawm lub tab, roj teeb tsis zoo ncej, sab nraud Circuit Court, zoo ncej, thiab zoo ncej. Tom qab ntawd ntws mus rau lithium hlau phosphate zoo ncej los ntawm tus neeg xyuas pib thiab tus nqi zoo yog sib npaug. Tom qab cov lithium ions intercalate rau hauv cov hlau phosphate siv lead ua, cov hlau phosphate hloov mus rau lithium hlau phosphate.
Txoj Cai Them Nqi thiab Tshem Tawm
Lub hauv paus ntsiab lus ntawm kev them nyiaj thiab kev tso tawm ntawm LiFePO4 roj teeb lub zog cia qhov system: Hauv lub sijhawm them nyiaj, lub zog sib cuam tshuam lossis daim phiaj hluav taws xob tsub lub zog cia. Hloov tam sim no yog rectified rau hauv ncaj qha tam sim no los ntawm lub rectifier kom them lub zog cia roj teeb module ces cia lub zog. Nyob rau hauv lub sij hawm tso tawm, lub zog cia system tawm mus rau hauv daim phiaj los yog load. Lub zog DC hloov mus rau AC zog los ntawm inverter. Thiab cov zis inverter yog tswj los ntawm lub hauv paus saib xyuas qhov system, uas tuaj yeem muab cov khoom siv hluav taws xob ruaj khov rau hauv daim phiaj lossis kev thauj khoom.
