Kuyini Ukushaja Kwamanje?
Ikhasimende livela neshidi elithile libuza ukuthi lingakwazi yini ukushaja ngo-1C. Ungakwazi. Kodwa i-1C iyisilingi, hhayi isincomo. Abantu abaningi abawutholi lo mehluko, noma bayawuthola kodwa abanaki. Ize isheshe ife ibhethri futhi kube khona ozochaza ukuthi konakelephi.
Ukushaja kwamandla yindlela ophusha ngayo ugesi ngokushesha ebhethrini. Ama-Amperes. Ukubheka ama-amps ewodwa akusizi, udinga ukubona ubudlelwano obunamandla{2}}Ibhethri le-Ah liku-100A lingu-1C, ngokombono ligcwele ehoreni elilodwa. Ku-50A lokho kungu-0.5C, amahora amabili. Iseli elingu-18650 elilinganiselwe ku-2600mAh, 0.5C lisho u-1.3A. -Isilinganiso siyindlela evamile yomkhakha yokuqhathanisa amabhethri anosayizi abahlukahlukene ngokulinganayo.
Amabhethri amaningi e-lithium enza kahle ku-0.5C ukuze asetshenziswe nsuku zonke. Besenza amabhethri e-forklift isikhathi eside ngokwanele ukuze sibone inqwaba yamaphekhi abulawa ukushajwa kwe-1C. Angisho ukuthi i-1C ayikwazi ukusebenza, isikhathi esifushane kulungile, kodwa ngemva kwemijikelezo engamakhulu amane noma amahlanu umehluko uyavela. Amaphakethe angu-0.5C asasebenza ngamandla, ama-1C asevele ehla umthamo. Ungakwazi ukuchaza i-chemistry konke okufunayo, abantu abakholelwa kuze kube yilapho bebona idatha evela kumikhumbi yabo.
Kungani lokhu kwenzeka? Ama-ion e-lithium adinga ukuhlangana ezendlalelo zegraphite ku-anode lapho ishaja. Njengoba iphakeme kakhulu, ama-ion awakwazi ukushesha ngokwanele ukuze angene, anqwabelana phezulu njenge-metallic lithium esikhundleni salokho. I-metallic lithium ikhula ibe ama-dendrites, ibhoboza isihlukanisi, isifunda esifushane sangaphakathi, ukubaleka okushisayo. Izehlakalo zasembonini yebhethri zenza izindaba njalo ezinyangeni ezimbalwa manje. Izimbangela eziningi ngokuvamile, kodwa izinkinga zokushaja zivela ekuhlaziyweni okuyimbangela kaningi kunalokho abakhiqizi abathanda ukukuvuma.
Ukushaja kwebhethri ye-lithium kunezigaba ezintathu.
Wonke umuntu osebhizinisini uyakwazi lokhu kodwa akubona bonke abakunaka bobathathu.
{0}}Khokhisa ngaphambilini
I-Voltage engaphansi kwe-3V, awukwazi ukuyishaya ngamandla agcwele. Isakhiwo sezinto ze-anode siyantengantenga ngemva kokukhishwa okujulile, ukuphoqelela amandla angaphakathi kubangela umonakalo ongenakulungiseka. Isiteji-sokushaja sangaphambili sisebenzisa cishe u-10% wamanje ojwayelekile, kancane kancane sikhuphula i-voltage. Mhlawumbe u-0.05C kuze kube yilapho i-voltage ibuya ngaphezu komkhawulo. Amashaja amaningi ashibhile akweqa lokhu ngokuphelele. Ibhethri lihlala ubusika bonke endaweni yokugcina impahla engashisi, i-voltage yehla iye ku-2-point-something, intwasahlobo iyafika futhi othile ayixhume ngokuqondile ngesikhathi esigcwele. Ezinyangeni eziyisithupha kamuva izinkinga ziqala ukubonakala. Le phethini siyibona minyaka yonke kumakhasimende asenyakatho. Ingxoxo efanayo, umphumela ofanayo.
I-Constant Current
Isiteji samanje esiqhubekayo siphakamisa okusindayo. Ukuhlala kwamanje kungashintshi ngenkathi i-voltage ikhuphuka, u-0.5C ukufikisa ku-80% ngaphansi kwamahora amabili. Lapha yilapho amandla amaningi engena khona. Akukho okuningi ongakuchaza mayelana nale ngxenye, isebenza ngendlela obungayilindela.
I-Voltage eqhubekayo
Isiteji se-voltage eqhubekayo yilokho abantu abathanda ukweqa. Ngemva kokuthi i-voltage ishayisa usilingi-4.2V ngeseli ngalinye lama-ternary chemistries afana ne-NMC, i-3.65V ye-LFP-yamanje kufanele izishintshe ngokwayo. I-Voltage ibamba ngokuqinile, ukwehla kwamanje njengoba ingqamuzana lisondela ligcwele, liphela cishe ku-0.01C. Kuleyo 2600mAh 18650 okusho ukuthi cishe i-26mA ekugcineni. Lesi sigaba sithatha cishe ihora. Uma ubuka iwashi futhi udinga i-forklift emuva phansi, lesi sigaba siyanqanyulwa. Umphumela kungenzeka ukuthi u-10-15% ushajwe kancane noma ucindezela i-cathode uzama ukuphoqelela umthamo owengeziwe. Akukuhle kodwa abantu bayakwenza noma kunjalo.
I-Temperature Factor
Izinga lokushisa lishintsha izinto. I-electrolyte ebandayo i-viscous, ama-ion awahambi kahle. U-0.5C ofanayo osebenza kahle ekamelweni lokushisa ungabangela i-lithium plating ngaphansi kwezingaqhwa. Isitoreji esibandayo nezinhlelo zokusebenza zezindlu eziqandisiwe zidinga amabhethri anamasistimu okushisa akhelwe ngaphakathi. Zifudumeze amaseli okungenani abe ngamadigri angu-5 ngaphambi kokwamukela inkokhiso yamanje. Amakhasimende acabanga ukuthi ukushisisa kuyizindleko ezingadingekile kuze kube yilapho amabhethri efa ngaphambi kwesikhathi. Bese befika bebuza ukuthi kungani bengaxwayiswa muntu. Sabaxwayisa. Ishidi elicacisiwe lithi izinga lokushisa lokusebenza ngesizathu.
I-LFP iphatha ukuhlukumeza kangcono kune-ternary, ingxenye yokuthi kungani ibusa ekuphatheni izinto ezibonakalayo manje. Amanye amaseli alinganiselwe ngokushaja okungu-15C. Ungayiphatha akusho ukuthi kufanele ukwenze. Senze izivivinyo zokuqhathanisa, 1C vs 0.5C ukushaja kwesikhathi eside, iminyaka emibili yokugibela ibhayisikili. Umehluko wamandla wawungu-8-12% kuye ngokuthi izinga lokushisa lalilawulwa kahle kangakanani. Akuyona inhlekelele kodwa leyo yimali yangempela uma ubheka izindleko zokushintshwa kwemikhumbi.
Ingozi yokusebenza
Olunye udaba oluhlale luvela ukufanisa ishaja. Ishaja engu-0.5C eyakhelwe ukukhishwa okungu-200Ah okungu-100A. Shintshanisa ibhethri elingena esikhundleni elingu-100Ah bese kuthi ngokuzumayo ube ku-1C noma ngabe ubuyihlosile lokho noma cha. Kwenzeka ngaso sonke isikhathi ngesikhathi sokuthuthukiswa kwemishini nokushintshwa kwebhethri. Akekho ohlola ukuthi ishaja lisafanele yini iphakethe elisha. Ibhethri lisebenza kahle lize lingasebenzi.
Kunesisho ebhizinisini lebhethri le-forklift, izindleko zebhethri zingama-30% weloli lonke. I-OSHA inemithetho ethile yezindawo zokushaja, i-1910.178, izidingo zokungenisa umoya we-hydrogen, iziteshi zokugeza amehlo, ukuphatha ukuchitheka kwe-asidi. Inkathi ye-acid{{4}ye-asidi yokuhola lezi beyiyisibopho ngoba ukunqwabelana kwegesi ye-hydrogen ngesikhathi sokushaja kuyaqhuma. Inkathi ye-lithium inkinga ye-hydrogen yahamba kodwa ingozi yokubaleka kokushisa isanda kushintsha isimo. Ingozi ehlukene, isadinga ukunakwa.
Ukushaja kwamanje kuyinombolo nje eshidini lokucaciswa. Emuva kwayo ukuthi ibhethri lakho lihlala isikhathi esingakanani nokuthi kukhona okungahambi kahle ngaphambi kokuthi kwenzeke. Thola ukukhetha kahle lapho ucacisa okokusebenza, okushibhile kunokushintsha amabhethri ngemva kokuvela kwezinkinga.
