Kunnafonidila dɔ ye 48V 200Ah LiFePO4 rack batiri ci an ma walasa ka garanti lajɛ. A ka ɲininkali: "Batiri sara kalo wɔɔrɔ kɔfɛ." An ka ɛntɛrinɛti injiniyɛriw ye da wuli tuma min na, seli kelen-kelen bɛɛ suman ye 1,8V - ye kosɛbɛ 2,5V kɔrɔtɔko tigɛda jukɔrɔ kosɛbɛ. BMS tun ye baara dabila. Batiri sigilen tun bɛ fanga-dafalen cogo la kalo naani kɔnɔ Arizona garazi dɔ kɔnɔ ni kɔlɔsili sira ye min bɛ watt 15 sama hali bi. O doni paraziti ye pake ji bɔ ka tɛmɛ a lakanani dakun kan, wa chargeur standard si tun tɛ se k’a kunun. Batiri min sɔngɔ ye dɔrɔmɛ 3200 ye, o tiɲɛna ni kɔlɔsilikɛlan ye min bɛ se dɔrɔmɛ 15 ma, mɔgɔ si ma miiri k’a tigɛ.
Batiri bɔli lasɔminiw bɛ yen walasa ka nin ko in bali tigitigi. A kɛra i ka mobili kɔnɔ dashboard lasɔmini ye wo, walima BMS alarma ye i ka so fanga marayɔrɔ la wo, cikan ye kelen ye: i ka batiri bɛ ka charge bɔ joona ka tɛmɛ a sɔrɔli kan, wa n’i ma wale kɛ, tiɲɛni bɛ kɛ banbali ye.
"Batiri bɔli lasɔmini" kɔrɔ ye mun ye tiɲɛ na?
Batiri bɔli lasɔmini bɛ a jira ko batiri chargement (SOC) bɛ ka jigin ni hakɛ ye min bɛna se hakɛ dɔgɔmanba ma. Lakɔlɔsili tɛ k’a fɔ i ye ko batiri ka jugu - a b’a fɔ i ye ko batiri bɛ farati la.
Fɛn min b’a kɛ farati ye, o bɛ bɔ batiri ka kemikaliya la:
Plɔmu-asidi (mobili batiriw): .Ni a bɔra 50% SOC duguma, o bɛ kɛ sababu ye ka sulfation - plɔmu sulfate kristalɛw sɔrɔ platiw kan ani ka gɛlɛya waati tɛmɛnen kɔfɛ. Plɔmu-asidi batiri min bɛ bɔ kosɛbɛ, n’a sigilen bɛ hali tile damadɔ, o bɛ se ka bɔnɛ a seko la 20–30% la kudayi.
LiFePO4 (batiri minnu bɛ fanga mara): .Ni a bɛ bɔli kɛ BMS tigɛcogo jukɔrɔ (a ka c’a la 2,5V selilɛri kelen kɔnɔ, walima 40V 48V pake la) o bɛ lakanani dabila daminɛ. Ni batiri sigilen bɛ nin cogo in na, yɛrɛ-bɔli tɛmɛnen bɛ se ka seliw gɛrɛ 2,0V duguma, o bɛ kɛ sababu ye ka nɛgɛ wuli ka bɔ anode kuran dalajɛlan na - kemikɛli wale ye min tɛ se ka wuli, min bɛ kɔnɔna kurukuruw lawuli.
O cogo fila bɛɛ la, lasɔmini ye i ka finɛtiri ye ka wale kɛ. I janto o la, i bɛ batiri kura san.
A sababu 7 minnu ka teli ka kɛ
1. Paraziti doni (The Silent Killer) .
Batiri sitɛmu bɛɛ bɛ ni fɛnw ye minnu bɛ fanga sama hali ni doni kunba fagara: kɔlɔsili siraw, BMS jɔli kurun, LED jiralanw, Wi-Fi moduluw, invertɛri jɔli fanga.
Jate bɛ kɛ cogo tilennen na nka tuma caman na, mɔgɔw bɛ ɲinɛ u kɔ:
Batiri 48V 100Ah LiFePO4 bɛ fanga 4800 Wh minɛ min bɛ se ka baara kɛ (ni 90% DoD=4,320 Wh). Tile inverter min bɛ standby mode la, o bɛ 20–40W sama. Ni 30W bɛ ja tuma bɛɛ ni tile doncogo tɛ:
4.320 Wh ÷ 30W=144 lɛrɛ=6 tile ka se ka bɔli dafalen kɛ
Tile wɔɔrɔ sankaba ni inverter mɔgɔ si ma faga. O dɔrɔn de bɛ kɛ.
⚡ Pro Tip:Sani aw ka batiri sitɛmu si to mɔgɔ la min tɛ mɔgɔ kɔlɔsi ka tɛmɛ sanga 48 kan - lafiɲɛbɔ, waati kɔnɔna na, jɔli yɔrɔ - aw bɛ batiri tigɛ farikolo la ka bɔ doni bɛɛ la ni DC breaker walima disconnect switch ye. BMS jɔli kurun kelen (a ka ca a la 5–15 mA) bɛ se ka batiri bɔ kalo 3–6 kɔnɔ a marali kɔnɔ.
2. Batiri Banki min bonya ka dɔgɔ
Ni aw ka doni bɛ to ka batiri bɔ ka se 20% SOC ma walima ka dɔgɔya su o su, batiri tɛ tiɲɛ - a bonya ka dɔgɔ. Nin ye "discharge warning" sababu ye min ka teli ka sɔrɔ insigida fanga marayɔrɔw.
Du min bɛ kilowati 30 ta tile kɔnɔ, n’a ni batiri kelen bɛ kilowati 10 ta, o b’a jira ko o batiri bɛ se ka boli ni a bɔli juguya ye 100% don o don. Hali ni LiFePO4 ka cycle life ɲumanba don, o bɛ tiɲɛni teliya kosɛbɛ.
3. Chargement Sistɛmu (Système de chargement) ka dɛsɛ
Mobiliw kɔnɔ:Alternateur (alternateur) min tiɲɛna walima ni batiri dakunw tiɲɛna, o kɔrɔ ye ko batiri bɛ bɔ bolifɛn bolituma na bawo a tɛ charge (sara) kokura. Batiri dakunw ka tension ka kan ka kalan 13,8–14,4V ni motɛri bɛ baara la. 13.0V duguma bɛ chargement system gɛlɛya jira.
Tile-yɔrɔw la:Tile pannew ni charge controleur cɛ breaker min bɛ sɔgɔsɔgɔ, MPPT tracker min ma ɲɛ, walima shading on critical panneaux, o bɛ se ka chargement current dɔgɔya ka se zeru kɛrɛfɛ. Aw ka batiri bɛ bɔ cogo la wulada o wulada nka a tɛ charge dafalen sɔrɔ abada o dugujɛ. Dɔgɔkun kelen kɔnɔ, SOC bɛ wuli ka jigin fo BMS ka lasɔmini dɔ daminɛ min ka dɔgɔn -voltage. Aw ye aw ka tile chargeur controleur ka don o don baarakɛcogo sɛbɛnw lajɛ - ni kWh bɔli barikama bɛ kɛ chargement fan fɛ, batiri tɛ.
4. Funteni jugumanba
Funteni ye jibɔ teliyalan ye min bɛ dɔgɔya ka tɛmɛ tɔw bɛɛ kan. Nɛnɛ bɛ dɔ bɔ seko sɔrɔli la waati kelen na ani ka dɔ fara kɔnɔna kɛlɛli kan:
| Goniyahakɛ | Seko ni dɔnko (LiFePO4) . | Kɔnɔna Rezisti Yɛlɛma |
|---|---|---|
| 25 degere (77 degere F) . | 100% (a jate la) . | Basi daminɛ |
| 0 degere (32 degere F) . | 80–85% | +30–50% |
| -10 degere (14 degere F) . | 60–70% | +80–120% |
| -20 degere (-4 degere F) . | 40–55% | +150–200% |
Batiri min hakɛ ye 200Ah ye , o bɛ 120–140Ah dɔrɔn de di -10 degere la . Ni aw ka sitɛmu tun bonyalen don ka kɛɲɛ ni seko hakɛ ye, nɛnɛ baara bɛna kɛ sababu ye ka SOC lasɔmini dɔgɔya- hali ni tile chargement bɛnnen don. Ni sigida minnu bɛ bila sen kan nɛnɛ waatiw la, yɛrɛ-sumaya BMS fɛɛrɛ bɛ seko bɔnɛ bali - aw ye an ka gafe lajɛbatiri fanga marayɔrɔw bɛ baara kɛ cogo min na.
5. Selilu balanbaliya
Batiri caman-selilɛri kɔnɔ, seliluw bɛ bɔ ɲɔgɔn na dɔɔnin dɔɔnin u seko ni u ka wulicogo la, siɲɛ kɛmɛ caman kɔnɔ. Ni seli kelen min bɛ 16S (48V) pake kɔnɔ, o sera 2,5V ma k’a sɔrɔ 15 tɔw bɛ 3,1V la hali bi, BMS bɛ low-voltage lakanani daminɛ pake bɛɛ la - hali ni pake bɛɛ lajɛlen seko 70% tora.
A labɛncogo: BMS min bɛ ni balansi selilɛri baarakɛta ye, a tɛ kɛ pasif dɔrɔn ye. Balance passif bɛ baara kɛ chargement (sarali tɛmɛnen) dɔrɔn de la (joli bɔli tɛmɛnen ka bɔ selilu caman na). Balance active bɛ fanga tila-tila kokura seliw ni ɲɔgɔn cɛ chargement ni discharge fila bɛɛ la, o bɛ kɛ sababu ye ka pake to baara la ka mɛn.
6. Jibɔ hakɛ caman tɛ bɛn ɲɔgɔn ma
Ka 200A ja ka ban ka bɔ batiri la min jate bɛ 100A maksimali la, o bɛ kuran tɛmɛnen lakanani daminɛ - BMS bɛ bɔli tigɛ walasa ka funteni kojugu ni selilɛri tiɲɛni bali. Nin bɛ i n'a fɔ "discharge warning" nka tiɲɛ yɛrɛ la, o ye lakana dabila ye.
Sani i ka size kɛ i kabatiri fanga maracogo, i ka jatebɔ kɛ i ka doni kuncɛlen sisan :Kuranba=Sebaaya kuncɛlen (W) ÷ Batiri wulicogo (V) .. Inverter 5000W min bɛ batiri banki 48V kan, o bɛ 104A sama ka taa a fɛ. Aw ka batiri ka bɔli hakɛ ka kan ka tɛmɛ o kan ni margin ye.
7. Batiri kɔrɔbayali ani a seko dɔgɔyali
Sikili 3,000+ kɔfɛ, hali LiFePO4 batiri minnu ka ɲi-, olu bɛ 80% dɔrɔn de mara u seko fɔlɔ la. Batiri 200Ah bɛ 160Ah di sisan. Ni i ka doni ma Changé nka i ka boli waati surunyana dɔɔnin dɔɔnin san 2–3 kɔnɔ, o ye kɔrɔya normal ye - o tɛ fili ye. Nka, jɛɲɔgɔnya min bɛ jibɔ juguya ni ɲɛnamaya kɔnɔna bɛɛ lajɛlen cɛ, o tɛ sinsinni ye:
| Depth of Discharge (Bɔli) ka dun | Sikili ɲɛnamaya jateminɛlen (LiFePO4) . | Ɲɛnamaya kɔnɔ fanga sɔrɔli |
|---|---|---|
| 100% DoD ye | ~3000 ye cycles ye | 3000 × seko dafalen |
| 80% DoD ye | ~5000 ye cycles ye | 4.000 × seko dafalen |
| 50% DoD ye | ~8,000+ sɛgɛsɛgɛliw | 4,000+ × seko dafalen |
Ni DoD tora 80% la sanni ka kɛ 100% ye, o bɛ baarakɛcogo bɛɛ lajɛlen janya ni 30% ni kɔ ye. O faamuyaliBESS musaka jɛɲɔgɔnya- kɛrɛnkɛrɛnnenya la $/cycle/kWh metric - b’aw dɛmɛ ka hakɛ latigɛ hakilitigiw kɛ ka kɔn o ɲɛ.
Kɔrɔtɔko la: Aw ka kan ka min kɛ ni BMS dabilalen don kaban
Ni aw ka LiFePO4 batiri bɛ 0V kalan terminalw la, BMS donna lakanani juguman cogo la. Batiri selilɛriw bɛ se ka charge sɔrɔ hali bi, nka BMS MOSFET switchw dabɔlen don. Nin ye kɛnɛyako taabolo ye:
Taabolo fɔlɔ : .Aw bɛ selilɛri kelen-kelen bɛɛ ka wulicogo suman. Aw bɛ se ka don selilɛri pompi filiw la (walima aw bɛ baara kɛ ni BMS kɔlɔsili porogaramu ye ni aw bɛ jaabi di hali bi). Ni selilu bɛɛ kalanna ka tɛmɛ 2,5V kan, pake bɛ se ka segin a cogo kɔrɔ la.
Taabolo 2nan : .Aw bɛ LiFePO4-chargeur min bɛ se ka baara kɛ ni activation/force-charge mode ye, o kɛ. Tuma caman na, chargeur standard tɛ se ka batiri "salen" dɔn (0V terminal kalanni) wa u tɛna chargement daminɛ. Force-charge mode bɛ kurun fitinin dɔ (0,5–1A) gɛlɛya walasa ka BMS lawuli.
Taabolo 3nan : .Aw bɛ selilɛri funteni kɔlɔsi a kɛnɛyali waati. Ni seli dɔ tɛmɛna degere 45 kan chargement fɔlɔ waati, aw bɛ a jɔ o yɔrɔnin bɛɛ - o bɛ kɔnɔna tiɲɛni jira.
Taabolo 4nan : .Ni BMS ye baara kɛ kokura, aw bɛ charge/discharge cycle dafalen kɛ walasa ka SOC jateminɛ kɛcogo segin a cogo kɔrɔ la. BMS coulomb jatebɔlan bɛ bɔnɛ a ka tiɲɛni na, a dadonni juguman kɔfɛ.
🚨 Lasɔmi:Ni selilu dɔ kalanna ka tɛmɛ 2,0V kan, aw kana a ɲini ka kɛnɛya ni baarakɛlaw ma jateminɛ kɛ. 2,0V duguma, a ka c’a la, nɛgɛ bɔli daminɛna. Ni aw ye charge (sara) wajibiya ka don seli kɔnɔ min nɔgɔlen don ni nɛgɛ ye, o bɛ kɔnɔna mikro-shorts (shorts) dilan minnu bɛ se ka kɛ sababu ye ka funteni ko kɛ charge (sara) caman na kɔfɛ.
Ɲininkali minnu bɛ kɛ tuma caman na
Yala ne bɛ se ka bɔli lasɔmini bali wa?
Mobili dashboardw kan, model dɔw bɛ sira di ka kunnafoni - bali nka o ye farati ye. Lakɔlɔsili bɛ yen bawo ni a bɛ taa a fɛ ka batiri faga. Kuwati marayɔrɔw la, BMS ka low-voltage cutoff ye lakana fɛɛrɛ ye min tɛ se ka -negosi. Aw kana tɛmɛ a fɛ abada.
Ne ka kan ka n ka batiri chargement cogoya lajɛ siɲɛ joli?
Tile fanga marali kama : don o don sɛgɛsɛgɛliw kɛ i ka inverter ka kɔlɔsili porogaramu fɛ kalo fɔlɔ kɔnɔ, o kɔfɛ dɔgɔkun o dɔgɔkun n’i y’a jira ko sistɛmu bɛ balansi la. Ni waati cogoyaw (kabinɛw, RVw), aw bɛ a lajɛ ka kɔn baara kɛbaliya waati bɛɛ ɲɛ ani a kɔfɛ.
N ka tile batiri bɛ lasɔminiw lawuli minnu ka dɔgɔn-voltage la sɔgɔma o sɔgɔma. Yala batiri ka jugu wa?
Laala a tɛ - i ka batiri bonya ka dɔgɔn i ka su doni kama. Aw bɛ aw ka sufɛta hakɛ (kWh) jate ani k’a suma ni aw ka batiri baarakɛcogo ye min bɛ se ka kɛ 80% DoD ye. Ni doni tɛmɛna baarakɛcogo seko kan, aw mago bɛ fɛn marayɔrɔ caman na. Explore an kafɛn dilannenw suguya camanka ɲɛsin LiFePO4 moduluw ma minnu dabɔra sigiyɔrɔw ni jagokɛyɔrɔw ka wotoro boli kama.
Yala ji bɔli juguman bɛ nɔ bila ne bɛna lasɔminiw ye siɲɛ hakɛ min na wa?
Awɔ. Ni i ye i ka inverter ka low-SOC tigɛcogo sigi 20% (80% DoD) la sanni ka kɛ 10% (90% DoD) ye, o bɛ lakana buffer belebele di i ma ani ka batiri si janya kosɛbɛ. Saraka fitinin min bɛ kɛ don o don baarakɛcogo la, o bɛ sara san caman baarakɛ waati wɛrɛw la ani bɔli ko gɛlɛnw dɔgɔyali la.
Walasa ka dɛmɛ sɔrɔ ka batiri sitɛmu dɔ dilan min bɛ bɛn i ka doni tacogo yɛrɛ ma - ani ka i yɛrɛ tanga bɔli lasɔminiw ma pewu -aw bɛ se ka kuma Polinovel ka ɛntɛrinɛti jɛkulu fɛka ɲɛsin sizing consultation ma fu.