Ephaketheni lebhethri le-lithium-ion, ukungaguquguquki kwamaseli kubaluleke kakhulu.
Ake siqale incazelo ngokucaphuna umphumela webhakede, ukwenza kucace kakhudlwana futhi kube lula ukuqondakala.
Okuqukethwe okubalulekile komphumela webhakede ukuthi inani lamanzi ibhakede elingawaphatha alincikile kucezu olude kakhulu., kodwa okhunini olufushane kakhulu lwebhakede.
Ake sicabange ukuthi ibhethri ye-lithium ibhakede eliqukethe amanzi, khona-ke iseli yebhethri ye-lithium eyenza iphakethe lebhethri lifana nebhodi lezinkuni elenza ibhakede, kanjalo, iseli elinokusebenza okubi kakhulu linquma ukusebenza kukonke kwephakethe lebhethri le-lithium.
Ngakho-ke, uma ibhethri le-lithium-ion lipakisha ngokungaguquguquki kweseli, ukusebenza okufana nomthamo, impilo yomjikelezo, nezici zokukhipha imali zizothinteka ngokwezinga elithile. Njengoba inani lamashaji nokukhishwa okusetshenziswe kumaphakethe ebhethri le-lithium likhula, lokhu kusebenza kabi kuzokwanda.
Kwenzeka kanjani? Ithini i-logic yayo? Ake sichaze ngezansi:
Sonke siyazi ukuthi i-BMS isetshenziselwa ukuvikela kumaphakethe amaningi ebhethri ye-lithium. I-BMS ine-single-cell overcharge kanye nokuvikelwa kokukhipha ngokweqile kweseli elilodwa ukuze kuvikelwe amaseli e-lithium-ion ukuthi angashajwa futhi angashajwa ngaphakathi kwebanga lamandla kagesi eliphephile nelithembekile.. Uma iseli elilodwa lishajwe kakhulu noma selikhishwe ngokweqile, izothinta impilo yokusebenza futhi ibangele ngisho nezingozi zokuphepha.
Ibhethri cell lisebenza kanjani cukuphikelela kuthinte i Iphakethe Lebhethri ngesikhathi khiphaing?
Ibhethri ye-lithium ye-ternary ine-voltage eyodwa yokunqanyulwa kokukhipha engu-2.5V, kanye ne-BMS ngokuvamile isetha ukuvikelwa kokukhishwa ngokweqile kweseli elilodwa ku-2.8V. Indlela yokulawula ukuvikela yebhethri ye-lithium BMS iwukuthi lapho i-voltage yanoma yiluphi uchungechunge lwamabhethri ephaketheni lebhethri le-lithium ifinyelela ku-2.8V., ukuvikelwa kokukhishwa ngokweqile kuzovulwa, ishubhu ye-MOS yokukhipha noma ukudluliselwa kuzonqanyulwa, okubangela ukuthi lonke iphakethe lebhethri liyeke ukushajwa.
Thatha i-ternary lithium battery pack of 10 ochungechungeni futhi 1 ngokuhambisana njengesibonelo.
Ake sithi phakathi kwamaseli ebhethri e-lithium angu-10pcs, leyo enamandla aphansi ingu-2000mAh, kanti omunye 9 amaseli ebhethri anomthamo ongu-2500mAh. Lapho iphakethe lebhethri le-lithium likhishwa, i 10 amaseli ayaphuma ngesikhathi esifanayo, futhi i-voltage yamaseli iyancipha njengoba amandla ehla.
Lapho iseli elingu-2000mAh elinamandla aphansi likhishwa, umthamo weseli uzofinyelela ku-2.8V, kanti omunye 9 amaseli ephaketheni lebhethri asenamandla angu-2500mAh futhi i-voltage ingaphezu kuka-3.0V. I-BMS izothola uma iphakethe lebhethri linochungechunge lwama-voltage afinyelela ku-2.8V, ukuvikelwa kokukhishwa ngokweqile kuvuliwe, futhi lonke iphakethe lebhethri liyayeka ukushajwa.
Lokhu kubangela umthamo wokukhipha ongu-2000mAh kuphela kulo lonke iphakethe lebhethri.
Ibhethri cell lisebenza kanjani cukuphikelela kuthinte i Iphakethe Lebhethri ngesikhathi khokhisaing?
Umphumela ufana nalokho ngesikhathi sokukhipha
I-voltage egcwele ye-ternary lithium battery cell ingu-4.2V, kanye ne-BMS yephakethe lebhethri le-lithium isetha ukuvikeleka kokushajwa okukodwa kokungu-4.25V. I-voltage yeseli yebhethri iyanda ngokukhula komthamo.
Uma ibhethri elinomthamo ophansi ongu-2000mAh selishajwe ngokugcwele, amandla ebhethri afinyelela ku-4.25V, kanye nomunye 9 amaseli awashajwe ngokugcwele futhi i-voltage ingaphansi kuka-4.1V, kodwa lapho i-BMS ithola uchungechunge lwama-voltage angaphezu kuka-4.25V, iqala ukuvikela ukushajwa kwebhethri yephakethe, lonke iphakethe lebhethri liyayeka ukushaja.
Lokhu kubangela ukuthi ibhethri ishaje kuphela u-2000mAh, hhayi 2500mAh.
Le yindlela umphumela webhakede owenza ngayo kuphakethe lebhethri le-lithium, okuyiseli elinomthamo ophansi kakhulu linquma umthamo wokushaja kanye nomthamo wokukhipha wephakethe lebhethri le-lithium.
Umthelela ofanayo wokungaguquguquki okubi kwamaseli ebhethri kwenzeka empilweni yomjikelezo wephakethe lebhethri.
Iseli yebhethri ye-lithium enempilo yomjikelezo omubi kakhulu ephaketheni lebhethri inquma ukusebenza okuphelele kwephakethe lebhethri le-lithium..
Ukulawula kanjani ukuvumelana kwephakethe lebhethri?
Ukuvumelana kwamaphakethe ebhethri ye-lithium kufaka phakathi i-voltage yesifunda evulekile, umthamo, kanye nokumelana kwangaphakathi. Ngokujulile, ihlanganisa nenani lika-K (izinga lokuzikhulula), impilo yomjikelezo, izici zokushaja nokukhipha, njll.
Ngaphambi kokuthi iphakethe lebhethri le-lithium lihlanganiswe, amaseli azohlungwa futhi ahlanganiswe. Izinga lokumatanisa livamile: umehluko womthamo webhethri ulawulwa ngaphakathi 1%; umehluko we-voltage ungaphakathi kwe-3mV; umehluko wangaphakathi wokumelana ungaphakathi kuka-2mΩ.
Ngokuqondene nenani lika-K, impilo yomjikelezo, kanye nezici zokushaja, lezi zici zokungaguquguquki zidinga ukulawulwa emthonjeni wabakhiqizi/izimboni zebhethri. Ukwenziwa kwamazinga okukhiqiza ngobuningi, ukulawula okuzenzakalelayo, njll.
