Iyini imojuli yebhethri ye-lithium?

Uhlolojikelele lwamamojula ebhethri

Amamojula ebhethri ayingxenye ebalulekile yezimoto zikagesi.Umsebenzi wabo ukuxhuma amaseli ebhethri amaningi ndawonye ukuze akhe wonke ukuze anikeze amandla anele ukuze izimoto zikagesi zisebenze.

Amamojula ebhethri ayizingxenye zebhethri ezakhiwe amaseli ebhethri amaningi futhi ayingxenye ebalulekile yezimoto zikagesi.Umsebenzi wabo ukuxhuma amaseli ebhethri amaningi ndawonye ukuze akhe wonke ukuze anikeze amandla anele ezimoto zikagesi noma imisebenzi yokugcina amandla.Amamojula ebhethri awawona nje umthombo wamandla wezimoto zikagesi, kodwa futhi angenye yemishini yawo ebaluleke kakhulu yokugcina amandla.

Ukuzalwa kwamamojula webhethri

Ngokombono wemboni yokukhiqiza imishini, amabhethri eseli elilodwa anezinkinga ezifana nezakhiwo ezimbi zemishini kanye nokuxhumana kwangaphandle okungenabungane, ikakhulukazi okuhlanganisa:

1. Isimo somzimba sangaphandle esinjengosayizi nokubukeka asizinzile, futhi sizoshintsha kakhulu ngenqubo yomjikelezo wokuphila;

2. Ukuntuleka kokufakwa okulula nokuthembekile kwemishini kanye nesixhumi esibonakalayo sokulungisa;

3. Ukuntuleka koxhumano olulula lokuphumayo kanye nesixhumi esibonakalayo sokuqapha isimo;

4. Ukuvikela okubuthakathaka kwemishini kanye nokufakwa kwe-insulation.

Ngenxa yokuthi amabhethri e-single-cell anezinkinga ezingenhla, kuyadingeka ukwengeza isendlalelo ukuze ushintshe futhi uzixazulule, ukuze ibhethri ihlanganiswe futhi ihlanganiswe nayo yonke imoto kalula.Imojula eyakhiwe amabhethri amaningana kuya kwayishumi noma angamashumi amabili, anesimo sangaphandle esizinzile, esikahle nesinokwethenjelwa ngomshini, okukhiphayo, isikhombikubona sokuqapha, kanye nokwahlukanisa okuthuthukisiwe nokuvikelwa kwemishini kuwumphumela walokhu kukhethwa kwemvelo.

Imojuli yamanje evamile ixazulula izinkinga ezihlukahlukene zamabhethri futhi inezinzuzo eziyinhloko ezilandelayo:

1. Ingabona kalula ukukhiqizwa okuzenzakalelayo futhi inokukhiqiza okuphezulu, futhi izinga lomkhiqizo nezindleko zokukhiqiza kulula ukulawula;

2. Ingenza izinga eliphezulu lokumiswa, okusiza ukunciphisa kakhulu izindleko zomugqa wokukhiqiza nokuthuthukisa ukusebenza kahle kokukhiqiza;ukusebenzelana okujwayelekile kanye nokucaciswa kuhambisana nokuncintisana kwemakethe okugcwele kanye nokukhetha izindlela ezimbili, futhi kugcina ukusebenza okungcono kokusetshenziswa kwe-cascade;

3. Ukuthembeka okuhle kakhulu, okunganikeza ukuvikelwa okuhle komshini nokufaka ukufakwa kwamabhethri kuwo wonke umjikelezo wokuphila;

4. Izindleko eziphansi zempahla eluhlaza ngeke zibeke ingcindezi enkulu ezindlekweni zokugcina zokuhlanganisa isistimu yamandla;

5. Inani elincane leyunithi elondolozekayo lincane uma kuqhathaniswa, elinomthelela omkhulu ekwehliseni izindleko zangemuva kokuthengisa.

Ukwakheka kwemojuli yebhethri

Isakhiwo semojuli yebhethri ngokuvamile sihlanganisa iseli yebhethri, uhlelo lokuphatha ibhethri, ibhokisi lebhethri, isixhumi sebhethri nezinye izingxenye.Iseli yebhethri iyingxenye eyisisekelo kakhulu yemojuli yebhethri.Yakhiwa amayunithi ebhethri amaningi, ngokuvamile ibhethri ye-lithium-ion, enezici zokuminyana kwamandla aphezulu, izinga eliphansi lokuzikhipha nempilo ende yesevisi.

Uhlelo lokuphatha ibhethri lukhona ukuze kuqinisekiswe ukuphepha, ukwethembeka nempilo ende yebhethri.Imisebenzi yayo eyinhloko ihlanganisa ukuqapha isimo sebhethri, ukulawula izinga lokushisa kwebhethri, ukushajwa kwebhethri / ukuvikelwa kokukhipha ngaphezulu, njll.

Ibhokisi lebhethri igobolondo langaphandle lemojuli yebhethri, elisetshenziselwa ukuvikela imojuli yebhethri endaweni yangaphandle.Ibhokisi lebhethri ngokuvamile lenziwa ngezinto zensimbi noma zepulasitiki, ezinokumelana nokugqwala, ukumelana nomlilo, ukumelana nokuqhuma nezinye izici.

Isixhumi sebhethri siyingxenye exhuma amaseli ebhethri amaningi abe lilonke.Ngokuvamile kwenziwa ngezinto zethusi, ezine-conductivity enhle, ukumelana nokugqoka kanye nokumelana nokugqwala.

Izinkomba zokusebenza kwemojuli yebhethri

Ukumelana kwangaphakathi kusho ukumelana kwamandla amanje ageleza ebhethrini uma ibhethri lisebenza, okuthintwa izinto ezifana nempahla yebhethri, inqubo yokukhiqiza kanye nesakhiwo sebhethri.Ihlukaniswe nge-ohmic ukumelana kwangaphakathi kanye ne-polarization yangaphakathi ukumelana.Ukumelana kwangaphakathi kwe-Ohmic kuhlanganisa ukumelana nokuxhumana kwezinto ze-electrode, ama-electrolyte, ama-diaphragms nezingxenye ezihlukahlukene;i-polarization ukumelana kwangaphakathi kubangelwa i-electrochemical polarization kanye ne-concentration difference polarization.

Amandla athile – amandla ebhethri ngevolumu yeyunithi ngayinye noma isisindo.

Ukushaja nokukhipha ukusebenza kahle - isilinganiso sezinga amandla kagesi asetshenziswa ibhethri ngesikhathi sokushaja aguqulwa abe amandla amakhemikhali ibhethri elingawagcina.

I-Voltage – umehluko ongaba khona phakathi kwama-electrode ebhethri ephozithivu nenegethivu.

Vula i-voltage yesekethe: i-voltage yebhethri uma ingekho isekethe yangaphandle noma umthwalo wangaphandle oxhunyiwe.I-voltage yesekethe evulekile inobudlelwano obuthile namandla asele ebhethri, ngakho-ke i-voltage yebhethri ivamise ukukalwa ukulinganisa umthamo webhethri.I-voltage esebenzayo: umehluko ongaba khona phakathi kwama-electrode aqondile noma angalungile ebhethri lapho ibhethri lisesimweni sokusebenza, okungukuthi, lapho kukhona okudlulayo kwisekethe.I-voltage ye-Discharge cut-off: i-voltage efinyelelwe ngemva kokuba ibhethri ishajwe ngokugcwele futhi ikhishwe (uma ukukhishwa kuqhubeka, kuzokhishwa ngokweqile, okuzolimaza impilo nokusebenza kwebhethri).I-voltage enqamukile yokushaja: i-voltage lapho ishintsha njalo manje ekushajweni okungaguquki kwe-voltage ngesikhathi sokushaja.

Izinga lokushaja nokukhipha – khipha ibhethri ngomsinga ongashintshi we-1H, okungukuthi, 1C.Uma ibhethri ye-lithium ilinganiselwe ku-2Ah, i-1C yebhethri ingu-2A bese i-3C ibe ngu-6A.

Uxhumano oluhambisanayo - Umthamo wamabhethri unganyuswa ngokuwaxhuma ngokuhambisana, kanye nomthamo = umthamo webhethri elilodwa * inombolo yokuxhumana okufanayo.Isibonelo, imojuli ye-Changan 3P4S, umthamo webhethri elilodwa ngu-50Ah, khona-ke umthamo wemojula = 50 * 3 = 150Ah.

Ukuxhumeka kochungechunge - I-voltage yamabhethri inganyuswa ngokuwaxhuma ochungechungeni.I-Voltage = i-voltage yebhethri elilodwa * inani lezintambo.Isibonelo, i-module ye-Changan 3P4S, i-voltage yebhethri eyodwa ingu-3.82V, bese i-module voltage = 3.82 * 4 = 15.28V.

Njengengxenye ebalulekile ezimotweni zikagesi, amamojula webhethri ye-lithium yamandla adlala indima ebalulekile ekugcineni nokukhulula amandla kagesi, ukunikeza amandla, nokuphatha nokuvikela amaphakethe ebhethri.Zinomehluko othile ekubunjweni, ekusebenzeni, ezicini nasekusetshenzisweni, kodwa zonke zinomthelela obalulekile ekusebenzeni nasekuthembekeni kwezimoto zikagesi.Ngokuthuthuka okuqhubekayo kobuchwepheshe kanye nokwanda kwezinhlelo zokusebenza, amamojula webhethri ye-lithium azoqhubeka nokuthuthuka futhi enze iminikelo emikhulu ekukhuthazeni nasekudumeni izimoto zikagesi.