A LiFePO4 BMS (Njira Yoyendetsera Batri)Ndi bolodi lamagetsi lomwe limayang'anira, kuteteza, ndikulinganiza batire ya lithiamu iron phosphate (LiFePO4). Limakhala pakati pa maselo a batire ndi makina ena onse amagetsi, limayesa nthawi zonse magetsi, mphamvu, ndi kutentha kuti selo lililonse lizigwira ntchito bwino.

Popanda BMS, paketi ya LiFePO4 ilibe chitetezo chomangidwa mkati kuti isadzaze kwambiri, kutulutsa mphamvu mopitirira muyeso, ma short circuits, kapena kusalingana kwa maselo — chilichonse mwa izi chingafupikitse moyo wa paketi kapena, poipa kwambiri, kupanga ngozi yachitetezo. Ichi ndichifukwa chake ma paketi ambiri a LiFePO4 ogulitsidwa m'masitolo amasungidwa pa dzuwa, ma EV, kugwiritsa ntchito panyanja, ma RV, kapena kutumiza mphamvu zosungira ndi BMS yodzipereka m'malo modalira chochapira kapena inverter yokha.

Chifukwa Chake Mabatire a LiFePO4 Amafunikira BMS Mwapadera

Maselo a LiFePO4 mwachibadwa amakhala okhazikika pa kutentha kuposa ma chemistry ena a lithiamu monga NCM (nickel cobalt manganese) kapena NCA (nickel cobalt aluminum), yomwe ndi njira yogwiritsidwa ntchito kwambiri posungira zinthu zosasuntha komanso kugwiritsa ntchito zinthu zambiri zoyenda. Koma "okhazikika kwambiri" sizitanthauza kuti "palibe kasamalidwe kofunikira." Phukusi la LiFePO4 la maselo ambiri likukumanabe ndi mavuto atatu obwerezabwereza omwe BMS idapangidwira kuti iwathetse:

• Kusuntha kwa voteji ya selo.Ngakhale maselo ochokera ku gulu lomwelo la opanga sakalamba mofanana. Pazaka mazana ambiri, kusiyana pang'ono kwa kupanga kumapangika kukhala mipata yofunikira yamagetsi pakati pa maselo - vuto lenilenilo lolinganiza ma circuitry limapangidwira kukonza.
• Mzere wokhotakhota wotulutsa madzi.LiFePO4 ili ndi curve ya voltage yosalala kwambiri m'malo ambiri omwe imagwiritsa ntchito mphamvu zake, zomwe zimapangitsa kuti zikhale zovuta kuwerengera mphamvu yotsala kuchokera ku voltage yokha. BMS yokhala ndi coulomb coulomb count - yotsata kuchuluka kwenikweni kwa mphamvu yomwe imalowa ndi kutuluka mu paketi pakapita nthawi, m'malo moyerekeza kuchokera ku voltage yokha - imapereka kuwerenga kolondola kwambiri kwa mphamvu yomwe imagwiritsa ntchito mphamvu.
• Zenera logwira ntchito lopapatiza lotetezeka kwambiri.Maselo a LiFePO4 ali pakati pa mphamvu zawo zoyatsira magetsi koma amafunikirabe kukanikiza mwamphamvu mphamvu zonse komanso kutulutsa madzi ambiri kuti apewe kutaya mphamvu kwa nthawi yayitali.

Kodi LiFePO4 BMS Imateteza Chiyani Kwenikweni?

BMS yodziwika bwino ya ma batire a lithiamu imagwira ntchito zotsatirazi zoteteza:

1. Chitetezo chowonjezera mphamvu— imachotsa chaji selo iliyonse ikafika pamlingo wake wapamwamba wamagetsi
2. Chitetezo chotulutsa madzi mopitirira muyeso— imachepetsa katundu mphamvu ya selo isanatsike mokwanira kuti iwononge kosatha
3. Chitetezo cha overcurrent / short-circuit— imasokoneza dera ngati mphamvu yamagetsi yapitirira malire ovoteledwa
4. Chitetezo cha kutentha kwambiri— imaletsa kuyitanitsa kapena kutulutsa kunja kwa zenera lotetezeka la kutentha
5. Kulinganiza maselo— imagwirizanitsa mphamvu yamagetsi m'maselo onse mu chingwe cha mndandanda, kaya mopanda mphamvu kapena mwachangu

Kulinganiza Kogwira Ntchito vs. Kulinganiza Kopanda Mphamvu mu LiFePO4 BMS

Kulinganiza zinthu mopanda kusinthasinthaimachotsa mphamvu yochulukirapo kuchokera ku maselo amphamvu kwambiri pamene kutentha kudzera mu resistor mpaka phukusi lonselo litagwira. Ndi losavuta, lotsika mtengo, komanso lokwanira pa mapaketi ang'onoang'ono kapena ntchito zomwe nthawi zambiri zimakhala zochepa.

Kulinganiza bwinoImasamutsa mphamvu kuchokera ku maselo amphamvu kwambiri kupita ku maselo amphamvu kwambiri m'malo moichotsa ngati kutentha. Ndi yothandiza kwambiri, imapanga kutentha kochepa, ndipo nthawi zambiri imapangitsa kuti pakhale kulinganiza bwino komanso thanzi labwino la paketi kwa nthawi yayitali - zomwe zimafunika kwambiri chifukwa cha kukula kwa paketi, kuchuluka kwa maselo, ndi kuchuluka kwa kayendedwe ka kayendedwe kake (mapaketi akuluakulu a ESS, malo osungira dzuwa tsiku lililonse, mapaketi a EV okhala ndi mphamvu zambiri).

Pa ma paketi ang'onoang'ono, oyenda pang'onopang'ono, kulinganiza zinthu mopanda phokoso nthawi zambiri kumakhala kokwanira. Pa makina akuluakulu kapena oyenda kwambiri a LiFePO4, kulinganiza zinthu mopanda phokoso kumakhala koyenera mtengo wowonjezera.

Momwe Mungasankhire LiFePO4 BMS Yoyenera

Poyerekeza BMS ya ma batire a lithiamu, mfundo zinayi zimatsimikiza ngati idzagwirizana ndi makina anu:

1. Chiwerengero cha maselo (S-count).BMS iyenera kufanana ndi momwe phukusi lanu limakhalira - 4S BMS ya paketi ya 12V, 8S ya 24V, 16S ya 48V, ndi zina zotero (kutengera mphamvu ya LiFePO4 ya ~3.2V nominal cell voltage). Kuchuluka kwa S-count kolakwika ndi chimodzi mwa zifukwa zomwe zimachititsa kuti BMS isagwirizane.
2. Kuchuluka kwa mphamvu yamagetsi kosalekeza komanso kokwera kwambiri.Ikani BMS pamalo oyenera malinga ndi kuchuluka kwa mphamvu zomwe mwapeza, osati kungojambula wamba, ndipo siyani malo ogwirira ntchito — BMS yomwe ikuyenda padenga lake lamphamvu nthawi zonse idzakhala yotentha komanso yokalamba mwachangu.
3. Kulinganiza mtundu ndi mphamvu yamagetsi.Monga tafotokozera pamwambapa, sankhani pakati pa kusasinthasintha kwa mphamvu ndi kusinthasintha kwa mphamvu kutengera kukula kwa paketi ndi kuchuluka kwa kayendedwe ka kayendedwe ka mphamvu, ndipo yang'anani mphamvu yamagetsi (mA) — mphamvu yamagetsi yapamwamba imatanthauza kulinganiza mwachangu pamapaketi akuluakulu.
4. Ndondomeko yolumikizirana.Ngati BMS ikufunika kulankhula ndi inverter, pulogalamu yowunikira, kapena netiweki ya CAN ya galimoto, tsimikizirani kuti imathandizira njira yoyenera — nthawi zambiri RS485, CAN bus, UART, kapena Bluetooth — musanagule, osati mutakhazikitsa.

LiFePO4 BMS ndi Voltage: 12V, 24V, ndi 48V/51.2V Systems

Mabodi a LiFePO4 BMS nthawi zambiri amafotokozedwa ndi voteji ya dongosolo lodziwika bwino, lomwe limagwirizana ndi kuchuluka kwa maselo enaake:

• Makina a 12V (4S):kasinthidwe kofala kwambiri ka magetsi onyamulika, makonzedwe ang'onoang'ono a dzuwa, ndi kusintha mabatire omwe akubwera
• Makina a 24V (8S):zofala kwambiri m'madzi, ma RV, ndi ma solar apakatikati
• Makina a 48V / 51.2V (16S):kalasi yamagetsi yodziwika bwino yosungira mphamvu m'nyumba, ma solar installation akuluakulu, ndi ma ESS racks ambiri amalonda

Kuchuluka kwa maselo kumachokera ku mphamvu ya LiFePO4 ya ~3.2V pa selo iliyonse — 4 × 3.2V ≈ 12.8V, 8 × 3.2V ≈ 25.6V, 16 × 3.2V ≈ 51.2V.

Machitidwe amphamvu kwambiri nthawi zambiri amafuna chisamaliro chowonjezereka pa chithandizo cha njira yolumikizirana, chifukwa nthawi zambiri amakhala ogwirizana ndi inverter kapena njira yochulukirapo yoyendetsera mphamvu yomwe imafunikira deta yeniyeni kuchokera ku BMS.

Mafunso Ofunsidwa Kawirikawiri

Q1Kodi batire ya LiFePO4 ikufunika BMS?

Inde. Ngakhale kuti mankhwala a LiFePO4 ndi okhazikika pa kutentha kuposa mankhwala ena a lithiamu, paketi ya maselo ambiri imafunikirabe BMS kuti igwirizanitse maselo, kuteteza kutulutsa mphamvu/kutulutsa mphamvu mopitirira muyeso, komanso kutsata molondola momwe zinthu zilili. Kuyendetsa paketi ya LiFePO4 popanda BMS kumachotsa chitetezo chonsechi.

Q2Kodi pali kusiyana kotani pakati pa LiFePO4 BMS ndi BMS ya lithiamu-ion yonse?

Ntchito zoteteza ma core ndi zofanana, koma ma voltage cutoffs amayikidwa mosiyana pa chemistry iliyonse — LiFePO4's per-cell voltage range ndi yotsika kuposa maselo a NCM/NMC kapena NCA lithium-ion. BMS yomangidwa pa chemistry imodzi siyenera kugwiritsidwa ntchito momwe ilili pa ina popanda kusintha ma voltage thresholds kuti agwirizane ndi deta ya selo.

Q3Kodi ndi BMS ya amperage yotani yomwe ndikufunika pa paketi ya LiFePO4?

Gwirizanitsani BMS continuous current rating ndi maximum continuous draw yeniyeni ya system yanu, ndipo sankhani chitsanzo chokhala ndi peak/surge rating yomwe imaphimba bwino ma spikes akanthawi (motor start-up, inverter surge, etc.) popanda kugwedezeka.

Q4Kodi ndingabwezeretse bwanji LiFePO4 BMS?

Mayunitsi ambiri a BMS amabwerera okha vuto likatha — mwachitsanzo, magetsi akabwerera pamalo otetezeka pambuyo poti awonjezera mphamvu kapena atulutsa mphamvu kwambiri. Ma model ena amafunikanso kulumikizidwanso ndi dzanja kwa doko loyatsira kapena kutulutsa mphamvu, kapena kulekanitsa/kulumikizanso paketi kwakanthawi, kuti achotse vuto lomwe latsekedwa. Nthawi zonse yang'anani zolemba za mtundu wa BMS, chifukwa machitidwe okonzanso amasiyana malinga ndi kapangidwe kake.

Q5Kodi BMS imodzi ingagwire ntchito ndi mankhwala ambiri a lithiamu?

Ma BMS ena amatha kusinthidwa m'ma chemistry — LiFePO4, NCM, kapena LTO (lithium titanate) — kudzera mu ma voltage threshold threshold, koma izi ziyenera kukhazikitsidwa bwino pa chemistry yomwe ikugwiritsidwa ntchito. BMS yokhala ndi waya wolimba pa voltage ya chemistry imodzi siyenera kuganiziridwa kuti ndi yotetezeka kwa ina popanda kutsimikizira kukhazikika kaye. Si mitundu yonse pamsika yomwe imathandizira izi — yang'anani deta ya BMS m'malo mongoganiza kuti pali chithandizo cha multichemistry mwachisawawa.

Kusankha LiFePO4 BMS ya Pulojekiti Yanu

BMS yoyenera imadalira mphamvu yamagetsi ya paketi yanu, kuchuluka kwa maselo, mphamvu yamagetsi, ndi momwe imafunikira kulumikizana ndi makina ena onse. Gawani izi zinayi ndipo gulu laukadaulo la DALY lingakulangizeni momwe mungasinthire: mphamvu yamagetsi/maselo a dongosolo (monga 12V/4S, 24V/8S, 48V/16S), zofunikira zamphamvu yamagetsi yopitilira komanso yapamwamba, kugwiritsa ntchito (solar/ESS, marine, RV, EV, forklift, ndi zina zotero), ndi njira yolumikizirana yofunikira (RS485, CAN bus, UART, Bluetooth).

• Imelo: dalybms@dalyelec.com
• Fufuzani ndi gulu: BMS Yanzeru · BMS Yolinganiza Yogwira Ntchito · BMS Yosungira Zinthu Zakunyumba · BMS Yamphamvu Kwambiri · Malo Osungira Mphamvu a RV BMS