Dynamic lithium ion battery management system design method

2022/04/08

Mawallafi: Iflowpower -Mai Bayar da Tashar Wutar Lantarki

Tsarin sarrafa batirin lithium-ion mai ƙarfi Hanyar ƙira: Wannan takarda ta tattauna tsarin ƙira na tsarin sarrafa batirin lithium-ion mai ƙarfi don cimma kariyar wuce gona da iri, kariya ta wuce gona da iri da daidaita fakitin baturi mai ƙarfi na lithium-ion. Mahimman kalmomi: fakitin baturi na lithium-ion ikon lithium; tsarin gudanarwa; overcurrent; yawan zubar da jini; fiye da kima; sarrafa ma'auni Gabatarwa ga faffadan amfani da batirin lithium-ion fiye da shekaru goma, amma da wuri mai mahimmanci ga wayar hannu, kwamfutar tafi-da-gidanka, kyamara, DVD Jiran jerin ƙananan samfuran lantarki ta hannu, waɗannan lokatai sun kasance masu amfani guda ɗaya, marasa ƙarfi. load halin yanzu, babban aminci factor. A cikin shekaru biyu da suka gabata, baturan lithium-ion sun fara amfani da sauri, yawan kuzari, rashin gurɓatacce, da dai sauransu.

, an fara amfani da sauri a kan kekuna masu amfani da wutar lantarki, kayan aikin lantarki, da kayan wasan wuta, kuma a hankali ana amfani da su don motocin haɗaka da motocin lantarki. Koyaya, amincin batirin lithium-ion mai ƙarfi har yanzu shine matsalar da mutane suka fi damuwa a halin yanzu, don haka suna da matukar mahimmanci don kariyarsu. Baya ga tabbatar da ci gaba da inganta amincin batirin lithium-ion, ba zai yiwu a yi nazarin tsarin sarrafa batirin ba, ta yadda batirin da amfaninsa za su daidaita.

Kariyar batirin lithium-ion Muhimmi ya haɗa da kariya ta wuce gona da iri, kariyar zubar da ruwa, kariyar wuce gona da iri da gajeriyar kewayawa, da sauransu. caji, in ba haka ba za a bincika electrolyte a cikin baturi, don haka zafin jiki ya tashi ya shuka gas, rage baturin.

Rayuwar sabis yana da tsanani, har ma yana haifar da fashewa, don haka dole ne tsarin kariya ya tabbatar da cewa ƙarshen ƙarfin kowane baturi a cikin baturi ba zai iya ƙarewa ba. Lokacin da ƙarfin lantarki na baturin ya wuce ƙimar da aka saita, ana kunna shi. Ayyukan kariya na caji, yanke da'irar caji ta hanyar kariya, dakatar da caji.

Ana iya dakatar da kariyar lokacin da ƙarfin baturi ya dawo zuwa ƙarfin lantarki da aka yarda kuma ya saki yanayin kulle da ya wuce kima. Batirin lithium-ion na kayan daban-daban suna da nasu ƙayyadaddun ƙima. Bugu da ƙari, ba lallai ba ne a kula da rashin fahimtar amo, don hana rashin da'a da rashin aiki, wajibi ne a saita jinkiri mai yawa, kuma lokacin jinkiri ba zai iya zama guntu fiye da amo ba.

Lokacin da ƙarfin lantarki ya ci gaba da wuce ƙarfin gwajin overchalton, zai haifar da kariya ta sama da ƙasa. 1.2 Kariyar zubar da ruwa fiye da kima na fitar da batirin lithium-ion da ya wuce kima zai rage rayuwarsa, kuma lalacewar baturin galibi ba zai iya dawowa ba.

Domin hana yawan fitar da batirin lithium ion baturi, lokacin da ƙarfin baturin lithium ion ya yi ƙasa da wurin gwajin ƙarfinsa fiye da yadda ake fitar da wutar lantarki, sai a kunna fitarwar, kuma ana kiyaye baturin a wani wuri mai ƙarfi. Yanayin jiran aiki na ƙarancin halin yanzu, kuma saitin siga yana kama da haka. Caji. 1.

3 Kariyar wuce gona da iri / gajeriyar da'ira baturin Lithium-ion yana da wasu iyakoki, matsananciyar fitarwa kuma na iya haifar da lalacewa maras misaltuwa ga batirin lithium ion, yana shafar rayuwar sabis. Haƙiƙa an faɗaɗa fasalin kariyar gajeriyar kewayawa akan kariyar kwarara. Idan gajeriyar da'ira ta waje ta haifar, ana dakatar da fitarwa nan da nan, in ba haka ba yana iya haifar da mummunar illa ga batirin lithium ion kanta da kayan aikin waje.

Lokacin jinkiri na kariyar wuce gona da iri gabaɗaya shine aƙalla ƴan mitoci ɗari zuwa millise seconds, yayin da gajeriyar lokacin jinkirin kariyar kewayawa shine microseconds, kusan gajeriyar kewayawa nan take yana yanke madauki, wanda zai iya hana babbar lalacewa ga baturi daga baturi. Dangane da kayan aikin wutar lantarki, saitin kariyar darajar halin yanzu da lokacin jinkiri ba a haɗa shi da ma'auni na kayan aikin wutar lantarki da kanta, in ba haka ba zai shafi tasirin fitarwa na kayan aiki da kuma rayuwar motar. 1.

4 Baturi daidaita ƙarfin lithium-ion baturi kullum suna da 'yan kirtani, da dama na kirtani ko ma daruruwan kirtani, saboda baturi a kan aiwatar da aiki, shi wajibi ne don wuce da yawa matakai daga shafi fim ya zama gama. samfurin, ko da bayan tsarin gwaji mai tsauri, Ƙarfin wutar lantarki, juriya, ƙarfin wutar lantarki yana da daidaituwa, amma bayan wani lokaci, ana haifar da juriya na ciki, ƙarfin lantarki, iya aiki, da dai sauransu, haifar da rashin daidaituwa, za a haifa. ko irin wannan bambance-bambance. Ana nuna wannan bambanci azaman ƙarfin lantarki tsakanin jerin muryoyin baturi lokacin da fakitin baturi ya cika ko bayansa.

A wannan yanayin, yayin fakitin baturi, babban baturin yana da yawa, kuma ainihin baturin yana farawa da wuri, kuma baturin da ya yi ƙasa sosai a cikin tsarin fitarwa yana haifar da fakitin baturi zuwa ga kariya mai yawa, wanda zai ba da damar gaba ɗaya. fakitin baturi An saukar da ƙarfin a fili, kuma ƙarfin da ke cikin fakitin baturin shine ƙarfin babban baturi a cikin fakitin baturi, kuma yana da sauƙin yin caji da wuce gona da iri yayin amfani, kuma ba shi da sauƙin ganowa, yana haifar da hakan. gaba gazawar. Don haka, ana iya amfani da da'irar kariyar don kammala daidaitaccen aikin naúrar baturi don cire wuce haddi na halin yanzu daga baturi mai ƙarfin lantarki mai girma, cinye ƙarin ƙarfi, fahimtar daidaiton baturi, ƙara yawan amfanin batirin lithium-ion mai ƙarfi, da tsawaita baturi. amfani da Rayuwa, sabon tsaro. Hanyar daidaitawa da aka saba amfani da ita tana da ma'aunin ajiyar makamashi da ma'aunin juriya.

Ma'auni na ajiyar makamashi shine caji da fitarwa na abubuwan ajiyar makamashi kamar inductance ko capacitance don cimma canjin makamashi tsakanin canjin makamashi tsakanin baturi. Wannan daidaitaccen hanyar caji gabaɗaya yana sarrafa hadaddun cibiyar sadarwa na cibiyoyin sadarwa, babban buƙatun gudanarwa na tsaro, yakamata a kula da caji da lokacin fitarwa na abubuwan ajiyar makamashi, kuma mafi girman fa'ida shine duk raka'a na iya daidaita kowane raka'a. Aikin baturi baya cinye ƙarfin lantarki na fakitin baturin lithium ion.

Daidaiton juriya gabaɗaya ana watsa shi zuwa fakitin baturi ta hanyar cibiyar sadarwa mai sarrafawa, wanda za'a iya daidaita shi don batura masu yawan sel a lokaci guda. Duk da haka, a cikin tsarin daidaitawa, idan ƙarfin lantarki ya yi ƙanƙara, daidaitattun halin yanzu yana da ƙananan ƙananan, tasirin yana da ƙananan; idan juriya na lantarki ya yi ƙanƙanta, ƙarfin juriya yana da girma, tsarin asarar makamashi yana da girma, ƙimar ma'auni ya ragu, tsarin yana da girma don bukatun kula da zafi. Don yin gwajin gwajin zafin jiki.

Ka'idar daidaiton juriya tana cikin aiwatar da cajin fakitin baturi, lokacin da wani baturi ya yi sauri, ƙarfin lantarki ya fi sauran batura, ana sarrafa tsarin ta hanyar sarrafa shunt na juriyar daidaitawa, kuma ana cajin baturi. don rage saurin cajin baturin don cimma kowane sashe. Dalilin cajin ma'aunin baturi. 2 Ayyukan Kariya Gane kariyar batir lithium-ion Muhimmi: sarrafa guntu guda ɗaya da haɗaɗɗen guntun kariyar kewaye.

2.1IC Control A halin yanzu, akwai kwakwalwan kwamfuta da yawa waɗanda zasu iya gane kariyar baturi na lithium-ion. Akwai nau'ikan kwakwalwan kwamfuta da yawa, Taiwan, da babban ƙasa za su iya zaɓar.

A halin yanzu, akwai hanyoyi da yawa don amfani, balagagge, kuma kewayen kewaye abu ne mai sauƙi, amma farashin yana da tsada. Ayyukan ICs na kariya daban-daban sun bambanta. Yanayin kariya da layukan waje suma sun bambanta.

Yana iya dogara ne akan ICs daban-daban a ainihin amfani. Lokacin zabar IC, wajibi ne a yi la'akari da shi. Wutar kariyar overcharge na nau'ikan nau'ikan IC daban-daban ya bambanta.

Akwai 4.25V da 4.35V, da ikon amfani da wutar lantarki na IC, tsarin kewayawa yana da sauƙin isa, kare sigogi na IC Shin yana cikin layi tare da buƙatun, ƙarar ƙarami ya isa, dole ne kuyi la'akari da tunani.

Baya ga kariyar kariyar, farantin kariyar kuma madaidaici ne. Don yawan fitar da faɗakarwa, kare IC don gwada ƙarfin baturi. Da zarar an kai ga ƙarfin gwajin sama da ƙasa, ba don kashe wutar MOSFET da fitar da yanke ba.

Koyaya, a wannan lokacin, baturin kanta har yanzu yana da fitarwa ta yanayi da kuma amfani da IC na yanzu. Sabili da haka, ya zama dole don rage yawan amfani da IC na yanzu zuwa matakin mafi ƙasƙanci, kuma lokacin da yawan amfanin yau da kullun ba shine 0.1ua ba.

Bugu da kari, baturin lithium-ion mai wuta yana aiki ko caji, kuma za a sami gerberations mai matsa lamba. Saboda haka, kariyar ICs ya kamata ya dace da buƙatun matsa lamba. Hoto 1 zane ne na tsari na tsarin amfani da kirtani 4 don kare IC a cikin Seiko S-8254A.

Siffofin S-8254 da aka gina a cikin babban madaidaicin gwajin da'ira da da'irar jinkiri sune ICs don sassan 3 ko 4-segment-linking lithium ions ko lithium polymer batura masu caji. Canjawa ta hanyar tashar SEL, ana iya amfani da ita don kare 3 ko 4 jerin sel baturi. Hoto 1S 1S-8254A4 Tsarin Tsarin Kariya na Zati Na yanzu guntun kariyar baturi zai iya kare gabaɗaya baturan lithium-ion 4, amma yawancin baturan lithium-ion sama da sassan 5, kamar kayan aikin lantarki, kekuna na lantarki, da UPS, a wannan lokacin Menene. zan yi? Kamar yadda aka nuna a FIG.

2, da'irar na iya gane ikon fitarwa na 20A / 24V, don haka ana amfani da S-8254AAV azaman misali na guntun sarrafawa, wanda a lokaci guda yana amfani da kwakwalwan kwamfuta guda biyu masu kariya tare, yana kare fakitin baturin lithium ion 8-string, akan The Deprotection ƙarfin lantarki ne 2.70V ¡À 0.080V, da overchaulic ƙarfin lantarki ne 4.

250V 0.025V. Hoto 28 Servatic Lithium Ion Battery Kariyar Da'irar Wannan sarrafa ma'auni na kewaye yana amfani da guntu R5408, daidaiton ma'aunin wutar lantarki yana da girma, kuma daidaiton halin yanzu ya kai 1A.

2.2MCU Sarrafa Chips Kariyar Haɗin Kai Mai Mahimmanci ga kariyar fakitin baturi da ke ƙasa 4, kuma fakitin baturi sama da sassan 4 ana iya amfani da su a cikin jerin ko kariyar matakan matakai da yawa na kwakwalwan kariyar mataki guda daya. Hanyar guntu jerin.

Koyaya, ma'aunin da'ira na fakitin baturi na fakitin baturi mai kashi 4 ta amfani da yawancin guntu masu kariya. A lokaci guda, guntuwar kariyar hadedde sau da yawa ana yin su ne kawai don ɗaya ko ɗaya daga cikin halayen nau'in baturi, kuma farashin galibi yana da girma. Don wannan ƙarshen, haɗe tare da halayen caji da fitarwa na batirin lithium ion ikon lithium baturi, yawancin lokuta na da'irar kariyar baturi na lithium ion, hanyoyin ƙira ta amfani da MCU (micro-conscious) azaman ainihin.

A matsayin ginshiƙan sarrafa ayyuka daban-daban, ana ba da ƙaramin ceto zuwa fakitin baturin lithium-ion don samar da ƙarin caji, mai mamayewa, kariyar wuce gona da iri. Kariya, gajeriyar kariyar kewayawa, yayin da ake samar da ayyuka kamar hasashen iya aiki, sadarwa, gano asali. 3 Hardware anti-tsangwama matakan ikon lithium ion baturi tsarin kula da tsarin a matsayin wani ɓangare na amfani da tsarin, sau da yawa batun daban-daban electromagnetic tsangwama, da ainihin aiki yanayi ya fi muni, shi wajibi ne a dauki wani juriya a kan hardware zane da PCB kwamitin Tsangwama matakan.

4 Wasu Bukatu Saboda baturin yana da mahimmanci don samar da wuta ga babban aikin amfani, yana buƙatar BMS kawai ƙarancin wutar lantarki. 5 Kula da ƙarshen fakitin baturi mai ƙarfi na lithium-ion sabon batu ne, kuma tsarin gudanarwarsa zai haɗu da sa ido kan ra'ayoyin ƙirar fasaha, tare da ayyuka na yau da kullun kamar su a tsaye, caji, fitarwa, gudanarwa, kulawa ta atomatik na fakitin baturi, da cimma amfani, Dogaro da buƙatun amfani.

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