Niki Ukurikirana - Gukurikirana igihe?
BMS ikeneye kumenya ibibera imbere muri paki. Umuvuduko kuri selile, igiteranyo cyose, ubushyuhe ahantu henshi. Aya makuru araza ubudahwema, ntabwo yatanzwe rimwe murimwe. Nibyo rwose - gukurikirana igihe.
Igipimo cya voltage
Aha niho ikiguzi kinini kijya mubishushanyo bya BMS.
Buri selile cyangwa iringaniza itsinda ikenera voltage yumurongo wacyo gusubira kumurongo ugereranije IC. Kuri paki ya 16S ishobora gucungwa. Kuri paki 100S + EV urimo kureba chip nyinshi za AFE daisy - ziboheshejwe hamwe, itumanaho ryitaruye hagati yabo, hamwe nicyuma gisaba imbaraga zifatika zo kugana inzira nziza. Urusaku rw urusaku ni urugamba ruhoraho. Insinga ndende zikora nka antene. Byombi bifasha. Kugumya hejuru - inzira zubu kure yumurongo wumurongo bifasha byinshi.
AFE itomoye neza ibintu bifite akamaro kuruta uko abantu babitekereza. NMC selile ifite wenda 1.4V yumurongo wa voltage ikoreshwa. Kuri 4.2V uruzuye. Kuri 4.25V urimo gushiraho lithium ukica selile. Nibyo 50mV ya margin. Niba AFE yawe ifite m 15mV yukuri umaze gutwika hejuru ya kimwe cya kabiri cya bije yawe kumakosa yo gupima wenyine. Niyo mpanvu paki - zapakiye za voltage ziva mubikoresho byose bya batiri ya litiro nziza itanga ibikoresho bihenze AFEs-6815, 6813, urwo rwego. Ibihendutse bikora neza kubikoresho bya 4S yamashanyarazi. Ntabwo ari ugukurura.
LFP irababarira cyane kuruhande rwo hejuru ariko voltage umurongo iringaniye hagati kuburyo kugereranya SOC bigoye. Ukeneye ubunyangamugayo bwiza kubwimpamvu zitandukanye.
Ibiriho
Ibyuma byerekana ingoro cyangwa shitingi. Inzu zitandukanijwe n'amashanyarazi zorohereza igishushanyo. Shunts irasobanutse neza ariko yicaye munzira igezweho, bityo BMS yumuzunguruko wa BMS ikenera gukora voltage isanzwe - ya voltage ihwanye na pack voltage. Ntabwo ari nto kuri sisitemu ya 400V.
Shunts nayo ikwirakwiza imbaraga. 100µΩ shunt kuri 500A igabanuka 50mV igatwika 25W. Ubwo ni ubushyuhe ugomba gucunga. Kandi shunt irwanya ihindagurika hamwe nubushyuhe, kubwibyo gusoma bigezweho nabyo keretse iyo wishyuye. Ibishushanyo bya BMS bihendutse ntabwo. Noneho SOC igenda umunsi umwe kandi ntamuntu uzi impamvu.
Ubushyuhe
Thermistors irahendutse. Gushyira ni igice gikomeye.
Ipaki irashobora kugira selile 200 ariko 6 - 8 gusa yubushyuhe. Bajya he? Ingirabuzimafatizo muri geometrike ikora cyane kuko izengurutswe nandi masoko yubushyuhe. Ingirabuzimafatizo hafi yikibaho zitakaza ubushyuhe kubidukikije. Ingirabuzimafatizo hafi ya bisi zitwara ubushyuhe buva murwego rwo hejuru. Uruganda rukora batiri ya lithium ikora ibi ikora neza CFD cyangwa byibura moderi yubushyuhe yoroshye mbere yo kwiyemeza gukorera ahantu. Ahasigaye shyira thermistor imwe kuri module kandi twizere ibyiza.
Rukuruzi rugomba gukora kuri selire. Ntukareremba mu kirere hafi ya selire. Ubushyuhe bwo mu kirere imbere yikigo ntacyo bukubwira kubyerekeye ubushyuhe bwubuso. Twabonye itandukaniro rya dogere 8-10 hagati yumuyaga na selile hejuru yipaki isa neza kurupapuro.
Ibikoresho bya Thermal bifatika nabyo bifite akamaro. Guhuza byumye hagati ya thermistor na selile birashobora kugira ubushyuhe bwinshi. Gusoma biratinda. Mugihe sensor yerekana dogere 45 selile irashobora kuba iri kuri dogere 52 no kuzamuka.
Icyo BMS ikora hamwe namakuru
Ikigereranyo cya SOC nicyo kintu cyingenzi. Kubara Coulomb bihuza ibyigihe mugihe. OCV ishakisha ifitanye isano na voltage yo kuruhuka kuri leta yishyurwa. Kalman muyunguruzi cyangwa bisa bihuza byombi. Nta na kimwe muri ibyo gikora neza. Kubara Coulomb bigenda kuko ibipimo byubu ntabwo ari byiza kandi ntushobora kumenya aho utangirira. OCV ishakisha ikeneye paki kugirango iruhuke igihe gito bitabaho mubikorwa bikomeza. Akayunguruzo ka Kalman karafasha ariko nibyiza gusa nkakagari ka selile yubatswe, hamwe ningirabuzimafatizo.
Ikigereranyo cya SOH gikurikirana gutesha agaciro. Ubushobozi burashira, gukura kwirwanya. Ibi mubisanzwe bivuze gukora burigihe kugenzura ibicuruzwa cyangwa gusohora no kugereranya na baseline. Sisitemu zimwe zigerageza kugereranya kumurongo uhereye kumikorere. Ibisubizo biratandukanye.
Kurinda logique biroroshye. Umuvuduko mwinshi cyane, hagarika kwishyuza. Hasi cyane, reka gusohora. Ibiri hejuru cyane, guhagarika. Ubushyuhe buri hejuru, guta cyangwa guhagarika. Ibi ni ukugereranya kurenga. Kubona inzitizi neza bisaba gutekereza - bikabije kandi urabeshya - urugendo uhoraho, urekuye kandi ureka selile zangirika.
Kuringaniza
Ingirabuzimafatizo ziratandukana mugihe runaka. Kuringaniza pasiporo bitwika amafaranga arenze binyuze mumurwanya, mubisanzwe kuri 50-100mA. Biratinda. Mugihe cyamasaha 4 yishyuza cycle pasive iringaniza irashobora kwimuka 200-400mAh. Niba selile zawe ari 2000mAh ziringaniye ntabwo zigiye kugabanya.
Kuringaniza bifatika kwimura amafaranga hagati ya selile ukoresheje inductors cyangwa capacator. Byinshi byihuse, bikora neza, bihenze cyane, biragoye. Kuri batiri yinganda za lithium ibisubizo aho paki zizunguruka burimunsi, kuringaniza gukora birumvikana. Kuri paki yicaye kuri 50% SOC umwanya munini hamwe no gukoresha rimwe na rimwe, passiyo nibyiza.
Itumanaho
URASHOBORA bisi kubinyabiziga. Modbus yo guhagarara. Bombi barakora. Toranya ibyo aribyo byose sisitemu ikoresha.
Guhuza ibicu byumvikana neza kurupapuro. Mubimenyerezo kimwe cya kabiri cyimbuga zifite ibimenyetso byimyanda kandi ushyiraho ntabwo yateguye antenne yo hanze. Amakuru yamakuru yinjira hamwe no kohereza buri gihe akora neza kubikorwa byinshi bya batiri ya lithium itanga ibicuruzwa kuruta gutekereza ko bihoraho.
Ibipimo
ISO 6469 na UN ECE R100 kumodoka. UL 9540 kububiko buhagaze. OSHA hamwe na code yumuriro waho ahantu hashyirwa inganda. Batiri ya lithium OEM umufatanyabikorwa agomba kumenya ayo akoreshwa kumasoko yawe. Ibisabwa byo kugenzura akato mubipimo byimodoka bigenda abantu hejuru yikindi kintu cyose mubyakozwe.
Nukuri - gukurikirana igihe ntabwo ari ngombwa. Ikibazo nukuntu ukeneye ubunyangamugayo nuburyo buhanitse ukeneye, kandi ibyo biterwa na selile, porogaramu, ningaruka zo kubyumva nabi.
