Ni ubuhe buryo bukoreshwa mu kuringaniza selile muri bateri ya lithium?

Nkora imyaka 12 nkora bateri yamashanyarazi hamwe na BMS igishushanyo. Igihe cyose umuntu ambajije "kuringaniza ikora iki?", Gusa ndabereka amafoto abiri: imwe ni 2 - umwaka - isakoshi ya 36 V e-igare idafite uburinganire (igice cya selile kuri 1.8 V, igisigaye kuri 4.18 V), ikindi nicyiciro kimwe hamwe na 100 mA ya pasiporo (selile zose ziracyari muri mV 12 nyuma yimyaka itatu). Ngiyo ingingo yose ku ishusho imwe.

Mubipaki nyabyo, selile ntizigera zivuka zingana. Fata ibirango 100 - selile nshya ya Samsung 50E kuva kumurongo umwe: gukwirakwiza imbaraga mubisanzwe ± 30 mAh, igipimo - igipimo cyo gusohora gishobora gutandukana inshuro 2-33, kandi kurwanya imbere birashobora gutandukana na 3-5 mΩ. Nyuma yizunguruka 200 abanyantege nke basubira inyuma cyane. Hatabayeho kuringaniza, ubushobozi bwo gupakira butegekwa na selile idakomeye ishinzwe hamwe na selile ikomeye kumasohoka. Utakaza ubushobozi bukoreshwa 20-40% mumwaka wambere wonyine.

Active Cell Balancing

Hariho inzira ebyiri gusa abantu baringaniza mubikorwa:

Nibyo 95% yamapaki munsi ya 20 kWh gukoresha.
Imipira nyayo uzabona ku kibaho:

TI BQ769x2 / BQ769x3 / BQ78z100

Ibikoresho bisa LTC6804 / LTC6811 / LTC6813

Maxim MAX14920 / MAX14921

NXP MC33771 / MC33772

Amaraso asanzwe ava: 80-150 mA (BQ76952 irashobora gusunika mA 220 mugihe ugereranije amapine abiri).
Agaciro ka rezistor mubikorwa byinshi: hafi buri gihe 27 Ω cyangwa 33 Ω 2512 1 W.
Igenamiterere rya trigger nkoresha mubyukuri:
Tangira kuva amaraso kuri mV 15-25 hejuru yikigereranyo cya paki mugihe cya CV, hagarara mugihe delta igabanutse munsi ya mV 6-8.
Niba ugerageza kwirukana mV 2 uzahita uteka ikibaho ubuziraherezo.

Ubushyuhe nikibazo nyacyo. Ipaki ya 16s ifite amaraso 100 mA irashobora guta 7-8 W igahita kuri BMS PCB. Niyo mpamvu ibyo bihendutse 20 - amadolari ya e-gare ya e-gare irashwanyagurika nyuma yizuba rimwe ryizuba.

Umaze kujya hejuru ~ 30 kWh hafi ya bose bahindura ibikorwa.

Ingero nyazo - ingero zisi nashenye:

Tesla Model S / X (2012–2021): DC - amatafari ya DC kuri HVJB, ~ 1 A kuri module

BMW i3 (imyaka yose): module ya transformateur ya inductive, igipimo cya 24-kuri-1, hafi 2 A.

Ibipapuro bya BYD Blade: kuguruka - imbaho za capacitor zishingiye kuri Infineon TLF35568

Ibishishwa byububiko bihagaze mubushinwa: byitaruye DC - Modules ya DC yimuka 15–20 A kumurongo wa 700 V yose

Hanze - ikibaho - ikibaho abantu bagura:

1-2 Icyatsi kibisi AliExpress iguruka - imbaho za capacitori (izifite rela 8-16)

Heltec / Orion BMS Gen4 / REC Q / Dilithium: 5–8 A hamwe no gukonjesha neza

Cell Balancing

OEM nyinshi iringaniza gusa hejuru ya 10-15% ya SoC kuko umurongo wa voltage uringaniye cyane munsi ya 3.45 V (NMC) cyangwa 3.40 V (LFP).
Tesla waits until >90% SoC kandi ikora gusa kuringaniza min 30-60 yanyuma yishyurwa.
Ibiti byanjye bya BMW i3 2017 byerekana balancer ya inductive ikanguka gusa iyo delta> 30 mV no gupakira ibintu <5 A.

Mfite igikurura cyuzuye 2016–2018 hasi - umuvuduko wa paki ivuye kumugabane wUbushinwa wazigamye $ 0.80 mugusiba abamennye amaraso. Nyuma y'amezi 18 ingirabuzimafatizo zigenda nabi buri gusohora, umuringa ushonga, dendrite ikura, itandukanya irashonga, umuriro. Narebye 72 V 20 Ah paki zigabanuka kugeza 8-9 Ah zikoreshwa mumezi 14. Shyira amadolari 12 akora kuri balancer hanyuma bagaruke kuri 18–19 Ah. Isomo ryize inzira igoye.

Munsi ya 15 kWh → pasive nibyiza kandi bizahoraho iteka (scooters, ibikoresho byamashanyarazi, drone)

400 V+ or >50 kWh → ikora cyangwa uzajya uhinduranya modul buri mwaka

Buri EV ikwiye kugurishwa uyumunsi ifite kuringaniza. Impinduka zonyine ni niba ari 33 Ω résistoriste cyangwa $ 300 ikora.

Uku kuringaniza selile. Nta kintu gitangaje. Gusa guhagarika selile nziza gukururwa numuvandimwe umwe wumunebwe wahisemo gusaza vuba.

Cell Balancing