Shirya matsala baturin 48V 50Ah LiFePO4 wanda ba zai riƙe caji ba

Daidaitaccen Tsarin Aiki Mai Rufe Laifin Hardware, Saitunan Siga, da Deep Wake-Up

Lithium Iron Phosphate ($\rubutu{LiFePO}_4$) batura sun shahara don keɓaɓɓen tsawon rayuwarsu, thermal kwanciyar hankali, da zurfin iyawar keke. Daidaitaccen 48V 50Ah $\rubutu{LiFePO}_4$ fakitin baturi (yawanci ana saita shi a cikin a $16\rubutu{S}$ tsari ta amfani da 3.2V nominal sel) ana watsa shi sosai a cikin sadarwa, ajiyar makamashin hasken rana, da motocin lantarki masu haske. Duk da haka, lokacin da irin wannan fakitin ya kasa riƙe caji, yana rushe ayyuka masu mahimmanci.

Ganowa da warware wannan batu yana buƙatar tsari, hanyar da ta dogara da bayanai, nazarin komai daga sigogin caji na waje zuwa ma'auni na ciki da tsarin sarrafa baturi (BMS) mutunci.

1. Tsarin Gano Farko na Farko & Abubuwan Waje

Kafin tarwatsa fakitin baturi ko zargin lalatar tantanin halitta na dindindin, dole ne masu fasaha su kawar da gazawar muhalli da na kayan aiki.

• Ƙuntataccen Zazzabi na yanayi: $\rubutu{LiFePO}_4$ ilmin sunadarai yana da tsauraran iyakoki na thermal. Yin caji a ƙasa $0^circrubutu{C}$ ($32^circrubutu{F}$) ba tare da kariyar yankewar ƙarancin zafin jiki yana haifar da saka lithium akan anode ba, yana haifar da asarar ƙarfin da ba za a iya jurewa ba da gajerun da'irori na ciki.

• Tabbatar da Fitar Caja: Rashin daidaitawa tsakanin bayanan bayanan caja da buƙatun baturi zai hana cajin da ya dace. A 16-jeri 48V $\rubutu{LiFePO}_4$ baturi yana buƙatar girma/sha ƙarfin lantarki yawanci tsakanin 56.8V da 58.4 (3.55V zuwa 3.65V kowane tantanin halitta). Idan aka yi amfani da cajar gubar-acid daidaitaccen 48V, ƙarfin lantarkinsa ya yi ƙasa da ƙasa, kuma yanayin lalatawar sa na iya haifar da kariyar kuskuren BMS.

Ma'auni na Ma'aunin Bincike

2. BMS Kariya da “Yanayin Barci” Farfadowa

Tsarin Gudanar da Baturi shine kwakwalwar fakitin 48V 50Ah, tsara don cire haɗin da'ira a lokacin over-voltage, Ƙarƙashin wutar lantarki, kan-yanzu, ko abubuwan da suka faru na gajeren lokaci.

• Kulle Ƙarƙashin Wutar Lantarki: Idan fakitin 48V ya fita ƙasa da cikakkiyar madaidaicin madaidaicin sa (yawanci a kusa da $40\rubutu{V}$ ku $44\rubutu{V}$, ko $2.5\rubutu{V}$ ta tantanin halitta), BMS ya shiga yanayin rufewar kariya kuma ya yanke fitarwa/cajin MOSFETs. A cikin wannan hali, daidaitattun caja masu wayo na iya karantawa “0V” a tashoshi kuma sun ƙi fara zagayowar caji saboda sun gano babu wutar lantarki mai adawa.

• Hanyar farfadowa: Don tada BMS mai barci, dole ne masu fasaha su yi amfani da cajar lithium da aka keɓe tare da a “0V farkawa” ko “cajin dole” aiki, ko haɗa wutar lantarki mai jituwa mai iya isar da abin sarrafawa, low-na halin yanzu pre-cajin har sai da mutum irin ƙarfin lantarki tashi sama da $2.8\rubutu{V}$ bakin kofa.

3. Rashin Ma'auni na Ciki da Ƙarfin Ƙarfi

Idan masu canjin waje da saitunan BMS sun kasance na al'ada, tushen sanadin yawanci yana cikin ciki $16\rubutu{S}$ cell gine.

Al'amarin Raunan-Haɗin Kai a cikin Filayen Maɓalli

A 48A cikin 50 Ah fakitin dogara ga uniform iya aiki na 16 sel guda ɗaya da aka haɗa cikin jerin. Idan ko tantanin halitta guda ya ragu, yana nuna juriya mafi girma na ciki, ko yana fama da zubar da kai, ya kai ga cikar cajin sa ($\sim 3.65rubutu{V}$) ko babu komai ($\sim 2.5rubutu{V}$) tun kafin sauran fakitin.

1. Yanke Cajin da wuri: Lokacin caji, idan Cell #7 ya kai $3.65\rubutu{V}$ da wuri saboda iya fade (E.g., Sauke daga 50Ah zuwa 35Ah), BMS nan take yana kashe caji don kare takamaiman tantanin halitta. Sakamakon haka, fakitin 48V gabaɗaya ya rage caja kaɗan kawai, bayyana a matsayin gazawar rike makamashi.

2. Iyakance Ma'aunin Ma'auni: Daidaitaccen madaidaitan igiyoyin BMS kaɗan ne (yawanci $30\rubutu{mA}$ ku $100\rubutu{mA}$). Idan wutar lantarkin delta tsakanin sel ya wuce $100\rubutu{mV}$, m daidaitawa ba zai iya gyara faifai a lokacin daidaitaccen taga caji, ana buƙatar saman-daidaitacce.

4. Ka'idar warware matsalar mataki-mataki

1. Taka 1: Ma'aunin Wuta na Tasha

   Auna wutar lantarki mai buɗewa (OCV) a fadin manyan tashoshi masu inganci da mara kyau ta amfani da madaidaicin multimeter na dijital.

   • Karatu shine $48\rubutu{V} – 54\rubutu{V}$: Kunshin yana aiki; ci gaba zuwa gwajin iya aiki.

   • Karatu shine $0\rubutu{V}$: BMS ya faskara ta yanayin karewa ko an busa fis na ciki.

2. Taka 2: Duba Fuse da Ci gaba

   Duba babban fiusi na ciki ko na waje. High halin yanzu spikes iya busa master fuse, keɓe sel daga tashoshi na waje yayin da sel na ciki suka ci gaba da kasancewa.

3. Taka 3: Samun dama da Auna Wutar Lantarki na Mutum ɗaya

   A hankali buɗe murfin kariyar (lura anti-static da insulated kayan aiki ladabi) don samun dama ga kayan aikin daidaitawa na BMS. Auna ƙarfin lantarki na kowane ɗayan 16 kwayoyin halitta.

   • Delta lafiya: Ya kamata bambancin ƙarfin lantarki ya kasance $< 30\rubutu{mV}$ a cikakken caji.

   • Delta mara kyau: Bambanci $> 200\rubutu{mV}$ yana nuna mummunan rashin daidaituwar tantanin halitta ko lalacewar iya aiki.

4. Taka 4: Yi Babban Ma'auni na Manual

   Idan an tabbatar da rashin daidaito, cire haɗin BMS kuma cajin sel masu ƙarancin ƙarfin lantarki ta amfani da wutar lantarki mai lamba 3.65V na benci guda ɗaya har sai duk sel sun dace daidai., sannan sake saita zagayowar BMS.

Ƙarshe

Shirya matsala da gyara baturin 48V 50Ah LiFePO4 wanda ya kasa riƙe caji ya dogara da mataki-mataki., ciki-fito m. Farawa tare da fitar da iyakokin yanayin yanayi na waje da dacewa da fitarwar caja, ci gaba zuwa gano BMS ƙananan kariyar ƙarfin lantarki da “barci” jihohi, kuma a ƙarshe nutsewa cikin bambance-bambancen ƙarfin lantarki da nazarin lalata iya aiki na ciki $16\rubutu{S}$ jerin sel, kowane mataki yana buƙatar takamaiman tallafin bayanai. Ta hanyar daidaitattun ma'auni na multimeter, fuse dubawa, mutum-mutumi delta bincike, da mahimman hanyoyin daidaita ma'auni na hannu, masu fasaha za su iya nuna ainihin tushen dalilin, ƙara yawan maido da aikin ajiyar kuzari na fakitin baturi da tsawon rayuwar sabis, da kuma tabbatar da aiki mai aminci da aminci na tsarin ajiyar makamashi.

Da fatan za a tuntuɓi mu don ƙarin bayani!