Lithium baƙin ƙarfe phosphate baturi: halaye, aikace-aikace

Modern kayan aiki kowace rana ne mafi zama hadaddun da kuma iko. High matsayin fasahar yin high bukatar da batura da cewa a yanzu bukatar mu hada high yi, makamashi yadda ya dace, kuma suna da wani ƙara samar da wutar lantarki.

A gabatarwar da sabon iri na lantarki kayan aiki samar, cikin hanzari na tsari - duk wannan qara zuwa wutar lantarki bukatar, da kuma na zamani batura za su iya ba ko da yaushe ya tarye su. Don warware wannan matsala, masana'antun sun zaba don inganta lithium-ion fasaha. Kamar wancan ne aka haife cikin lithium baƙin ƙarfe phosphate baturi (LiFePO4), wanda shi ne wani akida zuriyar Li-ion batura.

tarihi bayanai

LiFePO4, ko LFP, - halitta ma'adinai olivine iyali, aka fara gano a 1996 da masana kimiyya daga Jami'ar Texas, John Goodenough, wanda aka neman hanyoyin da za a inganta Li-ion ikon kafofin. Sananne ne cewa da ma'adinai yana da ƙananan yawan guba da kuma wata babbar thermal kwanciyar hankali fiye da wani abu da aka sani a lokacin da wayoyin.

Bayan shi hadu a irin wannan yanayi, kuma yana da ƙananan kudin. Babban drawback na wayoyin kan LiFePO4 wani kananan lantarki iya aiki, wanda shi ne dalilin da ya sa lithium baƙin ƙarfe phosphate baturi ya daina samun ci gaba.

Bincike a cikin wannan shugabanci da aka koma a 2003 a Massachusetts Cibiyar Harkokin Fasaha. A tawagar masana kimiyya aiki a kan halittar fundamentally sabon batir da zai zama a maimakon mafi m a wannan lokaci, Li-ion batura. The aikin sha'awar manyan kamfanoni kamar Motorola da Qualcomm ta, wanda ya kawo fitowan da baturi tare da LiFePO4 cathode abubuwa.

LiFePO4 baturi a kan tushen da

Wannan irin batura yana amfani da wannan fasahar, don samar da wutar lantarki, da kuma saba lithium-ion Kwayoyin domin mu. Duk da haka, akwai wani yawan gagarumin bambance-bambance tsakanin su. Na farko, shi ne yin amfani da da kansa irin BMS - management system da kare lantarki baturi daga overcharging da kuma zurfin sallama, inganta karko da kuma sa lantarkin more barga.

Abu na biyu, LiFePO4, sabanin LiCoO2, shi ne kasa mai guba. Wannan hujja a yarda don kauce wa wasu daga cikin matsalolin da dangantaka da gurbacewar muhalli. A musamman don rage cobalt watsi saboda rashin iya zubar da batura.

A karshe, saboda da rashin hadade matsayin LFP abubuwa da daban-daban sinadaran qagaggun, wanda ya haddasa bambancin Performance model a kan wani m kewayon. Bugu da kari, wadannan ikon kayayyaki tabbatarwa mafi wuya da kuma ya kamata a yi a yarda da wasu sharudda.

fasaha halaye

An ce lithium baƙin ƙarfe phosphate baturi 48 volts, 36 volts da kuma 60 volts ake samar da sequentially interconnecting da guda Kwayoyin, saboda matsakaicin ƙarfin lantarki a daya LFP-sashe na iya wuce 3,65 V. Saboda haka, wasan kwaikwayon na kowane baturi yiwu muhimmanci bambanta da juna - shi duka ya dogara da taron jama'a da kuma musamman sinadaran abun da ke ciki.

Domin analysis Performance gabatar maras muhimmanci darajar da daya guda cell.

A mafi kyau ganin na da m na kowane mutum cell a baturin da aka kai Everexceed. Lithium baƙin ƙarfe phosphate baturi Everexceed bambanta tsawon rai. All suka jure har zuwa 4 da dubu. Cajin-sallama hawan keke tare da asarar damar zuwa 20%, da kuma ƙari da makamashi ajiya faruwa a 12 minutes. Aka ba da wannan, za mu iya cewa Everexceed batura ne daya daga cikin mafi kyau wakilan da LFP-abubuwa.

Amfani ko rashin amfani

Babban amfani da cewa a cikin wani m haske Highlights da lithium baƙin ƙarfe phosphate baturi, a tsakanin sauran wakilan da CRA, shi ne longevity. Irin wannan wani kashi ne iya yin tsayayya da fiye da 3 dubu cajin-sallama hawan keke a matakin wuta saukad da zuwa 30%, da kuma fiye da 2 dubu - .. Idan ya ragu zuwa 20%. Saboda wannan da talakawan batir ne kamar shekaru 7.

Barga caji halin yanzu shi ne na biyu muhimmin amfani na LFP-abubuwa. The fitarwa ƙarfin lantarki ya zauna daidai 3.2 V har da cajin ne gama na tafke sarai. Wannan simplifies da wayoyi, kawar da buƙata domin irin ƙarfin lantarki gwamnoni.

Higher ganiya halin yanzu - uku na su amfani. Wannan yanayin ba da baturi ga ba su iyakar ikon ko a sosai low yanayin zafi. Wannan dukiyar da ya sa maƙeran abin hawa don amfani lithium baƙin ƙarfe phosphate baturi a matsayin farko ikon source a lokacin da suka fara fetur da kuma dizal injuna.

Tare da dukan abũbuwan amfãni, LiFePO4 batura da daya babbar drawback - wani babban taro da kuma girma. Wannan ya takaita su amfani a wasu iri kayan da wutar lantarki, kayan aiki.

Features na aiki

Idan ka saya shirye-sanya lithium-phosphate batura, da matsaloli tare da goyon baya da kuma aiki za ka ba da. All godiya ga gaskiya cewa kera wannan abubuwa suna saka a cikin BMS hukumar cewa hana overcharging da kuma hana fitarwa rabi zuwa magangara mafi ƙasƙanci matakin.

Amma idan ka saya mutum sel (penlight batura, misali), to, dole ka ci gaba da ido a kan wutar baturi kadai. Lokacin da cajin saukad da kasa da m matakin (2.00 V kasa) za hanzari fada da capacitance, yin shi ba zai yiwu ba ga recharge da Kwayoyin. Idan ka, a maimakon haka, za a overcharged (sama 3,75 V), tantanin halitta kawai bulges saboda da gas saki.

Idan kana amfani da irin wannan batir ga wani lantarki abin hawa, bayan 100% caji dole ne ka cire haɗin caja da baturin. In ba haka ba, da baturi ta kumbura saboda supersaturation na lantarki,.

aiki da dokokin

Idan ka shirya amfani da wani lithium-phosphate da batura a cikin cyclic yanayin da a wani buffer, misali, a matsayin tushen ikon-rubucen ko a tare da wani hasken rana baturi, kana bukatar ka kula da ragewan da matakin na cajin 3.40-3.45 V. jimre wannan aiki ya taimaka 'smart' caja cewa ta atomatik farko da cikakken rama domin samar da makamashin, sa'an nan runtse da danniya matakin.

Lokacin aiki, kana bukatar ka saka idanu da ma'auni na Kwayoyin ko amfani da musamman daidaita biyan bashin (a cikin baturi, suna gina don wani lantarki abin hawa). cell rashin daidaituwa kira irin wannan jiha, a lokacin da jimlar ƙarfin lantarki da na'urar ne a wani maras muhimmanci matakin, amma cell ƙarfin lantarki zama daban-daban.

Wannan sabon abu ne saboda da bambanci na resistances na mutum sassan, matalauta lamba therebetween. Idan Kwayoyin suna da daban-daban voltages, kuma shi ne su m cajin-fitarwa, wanda muhimmanci rage sabis rai na baturi.

Tunzura baturi a cikin aiki

Kafin yin amfani da lithium phosphate batura harhada daga raba Kwayoyin, kula dole ne a dauki daidaita tsarin, kamar yadda sassan iya samun daban-daban cajin matakin. A saboda wannan dalili duk aka gyara an juna a layi daya kuma suna da alaka da rectifier, wani caja. United haka wajibi ne a yi cajin wayar zuwa 3.6 V.

Amfani da baturi lithium baƙin ƙarfe phosphate for lantarki bike, ku yiwuwa lura cewa, a cikin farkon minti na baturi ya bada iyakar ikon, sa'an nan da cajin ne hanzari fadowa zuwa matakin na 3.3-3.0 V. Kada ku ji tsoro wannan, domin shi ne al'ada aiki da baturin . The gaskiyar cewa mafi yawan iyãwarsa (game da 90%) ya ta'allaka ne a wannan fanni.

ƙarshe

Yadda ya dace lithium-phosphate batura ne 20-30% fi da cewa da sauran batura. A lokaci guda suka bauta ga 2-3 shekaru fiye da sauran ikon kafofin, kazalika da samar da wani barga yanzu a kan dukan zamanin da aiki. Duk wannan Highlights da abubuwa gabatar a cikin m haske.

Duk da haka, mafi yawan mutane za su yi watsi da kuma lithium baƙin ƙarfe phosphate baturi. Ribobi da fursunoni na baturi kodadde kafin su price - shi ne 5-6 sau fiye da saba a gare mu mu kai-acid Kwayoyin. Wannan mota baturi Kudinsa wani talakawan na game da 26 dubu. Rubles.