Ma batire a lithiamu ali ngati injini zomwe sizikukonzedwa bwino;BMSPopanda ntchito yolinganiza zinthu, ndi chinthu chongosonkhanitsa deta ndipo sichingaganizidwe ngati njira yoyendetsera zinthu. Kulinganiza zinthu mwadongosolo komanso mwadongosolo cholinga chake ndi kuthetsa kusagwirizana mkati mwa batire, koma mfundo zomwe amagwiritsa ntchito ndi zosiyana kwambiri.
Kuti timvetse bwino, nkhaniyi ikufotokoza kulinganiza komwe kunayambitsidwa ndi BMS kudzera mu ma algorithms ngati kulinganiza kogwira ntchito, pomwe kulinganiza komwe kumagwiritsa ntchito zotsutsa kutulutsa mphamvu kumatchedwa kulinganiza kogwira ntchito. Kulinganiza kogwira ntchito kumaphatikizapo kusamutsa mphamvu, pomwe kulinganiza kogwira ntchito kumaphatikizapo kutayitsa mphamvu.
Mfundo Zoyambira Zopangira Ma Battery Pack
- Kuchaja kuyenera kuyima pamene selo yoyamba yachajidwa mokwanira.
- Kutulutsa mpweya kuyenera kutha pamene selo loyamba latha.
- Maselo ofooka amakalamba mofulumira kuposa maselo amphamvu.
- -Selo yokhala ndi chaji yofooka kwambiri pamapeto pake imachepetsa batire'mphamvu yogwiritsidwa ntchito (ulalo wofooka kwambiri).
- Kuchuluka kwa kutentha kwa dongosolo mkati mwa paketi ya batri kumapangitsa maselo omwe amagwira ntchito pa kutentha kwakukulu kwapakati kukhala ofooka.
- Popanda kulinganiza, kusiyana kwa ma voltage pakati pa maselo ofooka kwambiri ndi amphamvu kwambiri kumawonjezeka ndi nthawi iliyonse yolipirira ndi yotulutsa. Pamapeto pake, selo limodzi limayandikira ma voltage apamwamba pomwe lina limayandikira ma voltage ochepa, zomwe zimalepheretsa mphamvu ya pakiti ya kulipirira ndi kutulutsa.
Chifukwa cha kusagwirizana kwa maselo pakapita nthawi komanso kutentha kosiyanasiyana kuchokera pakukhazikitsa, kulinganiza maselo ndikofunikira.
Mabatire a lithiamu-ion nthawi zambiri amakhala ndi mitundu iwiri ya kusagwirizana: kusagwirizana kwa chaji ndi kusagwirizana kwa mphamvu. Kusagwirizana kwa chaji kumachitika pamene maselo okhala ndi mphamvu yofanana amasiyana pang'onopang'ono pa mphamvu. Kusagwirizana kwa mphamvu kumachitika pamene maselo okhala ndi mphamvu yosiyana yoyambirira agwiritsidwa ntchito limodzi. Ngakhale kuti maselo nthawi zambiri amakhala ofanana bwino ngati apangidwa nthawi yomweyo ndi njira zofanana zopangira, kusagwirizana kungachitike kuchokera ku maselo omwe ali ndi magwero osadziwika kapena kusiyana kwakukulu kwa kupanga.
Kulinganiza Mogwira Mtima vs. Kulinganiza Mosachitapo Kanthu
1. Cholinga
Ma batire okhala ndi ma cell ambiri olumikizidwa motsatizana, omwe mwina sangakhale ofanana. Kulinganiza bwino kumaonetsetsa kuti kusintha kwa ma voltage a ma cell kumasungidwa mkati mwa milingo yomwe ikuyembekezeka, zomwe zimapangitsa kuti kugwiritsa ntchito bwino komanso kusamayende bwino, potero kupewa kuwonongeka ndikuwonjezera nthawi ya batire.
2. Kuyerekeza Kapangidwe
- Kulinganiza Zinthu Mosachita Kusinthasintha: Nthawi zambiri imatulutsa ma cell amphamvu kwambiri pogwiritsa ntchito ma resistors, zomwe zimapangitsa kuti mphamvu yochulukirapo ikhale kutentha. Njirayi imawonjezera nthawi yochaja ma cell ena koma imakhala ndi mphamvu zochepa.
- Kulinganiza Mogwira Ntchito: Njira yovuta yomwe imagawanso mphamvu mkati mwa maselo panthawi ya kuyitanitsa ndi kutulutsa mphamvu, kuchepetsa nthawi yochaja ndikuwonjezera nthawi yotulutsa mphamvu. Nthawi zambiri imagwiritsa ntchito njira zolimbitsira pansi panthawi yotulutsa mphamvu ndi njira zolimbitsira pamwamba panthawi yochaja.
- Ubwino ndi Kuipa Kuyerekeza: Kulinganiza zinthu mopanda kusinthasintha n'kosavuta komanso kotsika mtengo koma kogwira ntchito bwino, chifukwa kumawononga mphamvu ngati kutentha ndipo kumakhala ndi zotsatira zolinganiza zinthu pang'onopang'ono. Kulinganiza bwino zinthu kumakhala kothandiza kwambiri, kusamutsa mphamvu pakati pa maselo, zomwe zimapangitsa kuti kugwiritsa ntchito bwino zinthu zonse kukhale koyenera komanso kumakhala koyenera mofulumira. Komabe, kumaphatikizapo kapangidwe kovuta komanso ndalama zambiri, komanso zovuta kuphatikiza machitidwewa mu ma IC apadera.
Mapeto
Lingaliro la BMS linapangidwa koyamba kunja kwa dziko, ndipo mapangidwe oyambirira a IC amayang'ana kwambiri pa kuzindikira magetsi ndi kutentha. Lingaliro la kulinganiza linayambitsidwa pambuyo pake, poyamba pogwiritsa ntchito njira zochotsera mphamvu zomwe zimaphatikizidwa mu ma IC. Njira imeneyi tsopano yafalikira, ndi makampani monga TI, MAXIM, ndi LINEAR omwe amapanga ma chips otere, ena akulumikiza ma switch driver mu ma chips.
Kuchokera ku mfundo zoyendetsera zinthu zoyendera ndi ma diagram, ngati batire iyerekezeredwa ndi mbiya, maselo ali ngati zipilala. Maselo omwe ali ndi mphamvu zambiri ndi matabwa aatali, ndipo omwe ali ndi mphamvu zochepa ndi matabwa afupiafupi. Kuyendetsa zinthu mopanda mphamvu kumangofupikitsa matabwa aatali, zomwe zimapangitsa kuti mphamvu ziwonongeke komanso kusagwira ntchito bwino. Njirayi ili ndi zofooka, kuphatikizapo kutaya kutentha kwambiri komanso zotsatira zake zoyendetsa zinthu pang'onopang'ono m'matumba akuluakulu.
Mosiyana ndi zimenezi, "kulinganiza zinthu mwachangu kumadzaza ma plank afupiafupi," kusamutsa mphamvu kuchokera ku maselo amphamvu kwambiri kupita ku maselo amphamvu zochepa, zomwe zimapangitsa kuti pakhale kugwira ntchito bwino komanso kupeza bwino mwachangu. Komabe, kumabweretsa mavuto ovuta komanso okwera mtengo, komanso zovuta popanga ma switch matrices ndi ma drive owongolera.
Popeza pali kusiyana, kulinganiza zinthu mopanda mphamvu kungakhale koyenera maselo okhala ndi mgwirizano wabwino, pomwe kulinganiza zinthu mopanda mphamvu ndikoyenera maselo omwe ali ndi kusiyana kwakukulu.
Nthawi yotumizira: Ogasiti-27-2024
