Ma batire a lithiamu ali ngati mainjini omwe alibe kukonza; aBMSpopanda ntchito yofananira ndi osonkhanitsa deta chabe ndipo sangaganizidwe ngati kayendetsedwe ka kayendetsedwe kake. Kulinganiza kokhazikika komanso kokhazikika kumafuna kuthetsa kusagwirizana mkati mwa batire paketi, koma mfundo zake zoyendetsera ndizosiyana kwambiri.
Kuti zimveke bwino, nkhaniyi ikufotokoza kulinganiza komwe kumayambitsidwa ndi BMS kudzera mu ma aligorivimu monga kulinganiza kogwira ntchito, pomwe kusanja komwe kumagwiritsa ntchito zopinga kuti ziwononge mphamvu kumatchedwa kungokhala chete. Kulinganiza kogwira kumaphatikizapo kusamutsa mphamvu, pomwe kusanja kwapang'onopang'ono kumaphatikizapo kutaya mphamvu.
Basic Battery Pack Design Mfundo
- Kulipiritsa kuyenera kuyimitsidwa cell yoyamba ikakwana.
- Kutulutsa kuyenera kutha pamene selo loyamba latha.
- Maselo ofooka amakalamba mofulumira kuposa maselo amphamvu.
- -ma cell omwe ali ndi chiwongolero chofooka kwambiri pamapeto pake adzachepetsa batire paketi'mphamvu yogwiritsidwa ntchito (ulalo wofooka kwambiri).
- Kutentha kwadongosolo mkati mwa paketi ya batri kumapangitsa kuti ma cell azigwira ntchito pamatenthedwe apamwamba kwambiri kukhala ofooka.
- Popanda kusanja, kusiyana kwamagetsi pakati pa maselo ofooka kwambiri ndi amphamvu kwambiri kumawonjezeka ndi chiwongolero chilichonse ndi kutulutsa. Pamapeto pake, selo imodzi imayandikira voteji yayikulu pomwe ina imayandikira voteji yocheperako, kulepheretsa kuchuluka kwa paketi ndikutulutsa mphamvu.
Chifukwa cha kusagwirizana kwa ma cell pakapita nthawi komanso kutentha kosiyanasiyana kuchokera pakuyika, kulinganiza kwa ma cell ndikofunikira.
Mabatire a lithiamu-ion amayang'anizana ndi mitundu iwiri yosagwirizana: kuyitanitsa kosagwirizana ndi kuchuluka kwa mphamvu. Kulipiritsa kusagwirizana kumachitika pamene maselo a mphamvu yofanana amasiyana pang'onopang'ono poyang'anira. Kusagwirizana kwa mphamvu kumachitika pamene maselo omwe ali ndi mphamvu zosiyana zoyamba agwiritsidwa ntchito palimodzi. Ngakhale ma cell nthawi zambiri amafanana bwino ngati amapangidwa nthawi imodzi ndi njira zopangira zofananira, kusagwirizana kumatha kubwera kuchokera ku maselo omwe ali ndi magwero osadziwika kapena kusiyana kwakukulu kopanga.
Active Balancing vs. Passive Balancing
1. Cholinga
Ma battery paketi amakhala ndi ma cell ambiri olumikizidwa, omwe sangafanane. Kuyang'ana kumawonetsetsa kuti kupatuka kwamagetsi kumasungidwa m'migawo yomwe ikuyembekezeka, kusunga magwiridwe antchito ndi kuwongolera, potero kupewa kuwonongeka ndikutalikitsa moyo wa batri.
2. Kulinganiza Kwapangidwe
- Passive Balancing: Nthawi zambiri amatulutsa ma cell amagetsi okwera pogwiritsa ntchito zopinga, kutembenuza mphamvu yochulukirapo kukhala kutentha. Njirayi imakulitsa nthawi yolipiritsa kwa ma cell ena koma imakhala yocheperako.
- Active Balancing: Njira yovuta yomwe imagawiranso chaji m'maselo nthawi yamalipiro ndi kutulutsa, kuchepetsa nthawi yolipiritsa komanso kutulutsa nthawi yotulutsa. Nthawi zambiri amagwiritsa ntchito njira zofananira m'munsi pakutulutsa komanso njira zofananira pakulipiritsa.
- Kufananiza Ubwino ndi Zoipa: Kusanja bwino kumakhala kosavuta komanso kotchipa koma sikuthandiza, chifukwa kumawononga mphamvu ngati kutentha ndipo kumakhala ndi zotsatira zochepetsetsa. Kulinganiza mwachangu kumakhala kothandiza kwambiri, kusamutsa mphamvu pakati pa maselo, zomwe zimapangitsa kuti kagwiritsidwe ntchito kabwino kagwiritsidwe ntchito kake ndikukwaniritsa bwino mwachangu. Komabe, zimaphatikizapo zomanga zovuta komanso zokwera mtengo, zokhala ndi zovuta pakuphatikiza machitidwewa kukhala ma IC odzipereka.
Mapeto
Lingaliro la BMS lidapangidwa koyambirira kunja, ndi mapangidwe oyambirira a IC omwe amayang'ana kwambiri pamagetsi ndi kutentha. Lingaliro la kusanja lidayambitsidwa pambuyo pake, poyambilira pogwiritsa ntchito njira zotulutsira zopinga zophatikizidwa mu ma IC. Njirayi tsopano yafalikira, ndi makampani ngati TI, MAXIM, ndi LINEAR akupanga tchipisi totere, ena kuphatikiza ma driver osinthira mu tchipisi.
Kuchokera ku mfundo zofananira ndi zithunzi, ngati paketi ya batri ikufananizidwa ndi mbiya, maselo ali ngati ndodo. Maselo okhala ndi mphamvu zambiri amakhala matabwa aatali, ndipo amene ali ndi mphamvu yochepa amakhala matabwa aafupi. Kuyang'ana mosadukiza "kumangofupikitsa" matabwa aatali, zomwe zimapangitsa kuwononga mphamvu ndi kusachita bwino. Njirayi ili ndi malire, kuphatikizapo kutayika kwakukulu kwa kutentha ndi zotsatira zochepetsera pang'onopang'ono m'mapaketi akuluakulu.
Kulinganiza mwachangu, mosiyana, "kudzaza matabwa afupiafupi," kutumiza mphamvu kuchokera ku maselo amphamvu kwambiri kupita ku omwe alibe mphamvu zambiri, zomwe zimapangitsa kuti zikhale zogwira mtima kwambiri komanso kuti zitheke mofulumira. Komabe, imabweretsa zovuta komanso zovuta, zomwe zimakhala ndi zovuta pakupanga ma switch matrices ndikuwongolera ma drive.
Poganizira za kusinthanitsa, kusinthasintha kwapang'onopang'ono kungakhale koyenera kwa ma cell omwe ali ndi kusasinthika kwabwino, pomwe kulinganiza mwachangu ndikwabwino kwa ma cell omwe ali ndi kusagwirizana kwakukulu.
Nthawi yotumiza: Aug-27-2024
