Off-Grid Solar System Di huammɔ: Class-T Fuse a wɔabɔ, Fried Charge Controller, ne Battery Bank a Wɔsan Yɛ¶

Sɛ ɔdan ketewa bi a wɔmfa anyinam ahoɔden nni dwuma, kar a wɔde fa nnipa, ofie ketewaa bi, anaa ofie a ɛwɔ akyirikyiri hwere owia anyinam ahoɔden wɔ awɔw bere mu wim tebea a ɛnyɛ nea ɛyɛ mmerɛw mu a, huammɔdi no kɔ soro ntɛmntɛm fi ɔhaw mu kɔ asetra mu ahobammɔ ho haw mu. Sɛ wɔannya 12-volt, 24-volt, anaa 48-volt DC battery ahoɔden ne 120-volt anaa 230-volt AC inverter output a, diesel parking heaters no to mu mfinimfini, abura pɔmpɛ ne cistern UV purifiers gyae sen, CPAP respirators ne oxygen concentrators kɔ komm, na lithium iron phosphate (\(\text{LiFePO}_4\)) anaa lead-acid batere sikakorabea ahorow no wɔ asiane mu sɛ awɔw bɛsɛe no daa. Nea enye koraa no, sɛ wobɔ mmɔden sɛ wobɛsan de Battery Management System (BMS) a asɛe no asi hɔ anaasɛ wobɛsesa fuse titiriw a wɔabɔ no wɔ anyinam ahoɔden nnidiso nnidiso a ɛnteɛ mu a, ebetumi ama owia a ɛyɛ volt 100 kosi volt 450 a wɔabue mu a enni buffer no akɔ charge controller bi MOSFET transistors mu tẽẽ, na asɛe controller no wɔ sparks a ɛretu mu.

Batere a ɛwɔ ahoɔden a ɛba fam tẽẽ (DC) no sie mfomso ahoɔden kɛse: bere tiaa a awu wɔ lithium batere a ɛwɔ volt 12 anaa volt 48 so no betumi ama ampere 3,000 kosi 10,000 a ɛkɔ so tẽẽ, na ama dade safe bi ayɛ dade a ayow wɔ sekan fã mu na asɔ anyinam ahoɔden anaa nnuru ogya a entumi dum. Sɛ batere sikakorabea bi renom sigaret denneennen, ɛrebɔ hɛre, ɛretu hydrogen anaa hydrofluoric mframa a awuduru wom, anaasɛ ɔhyew a ɛyɛ hyew a ɛreguan ayɛ kɛse a, fi kar no mu anaa kar no mu ntɛm ara na frɛ wo mpɔtam hɔ nɔma a egye ntɛmpɛ (911 wɔ United States ne Canada no, . 112 wɔ Europa Aman Nkabom no nyinaa mu, . 999 wɔ United Kingdom) anaa hwɛ yɛn nɔma ahorow a egye ntɛmpɛ directory a wɔde kyerɛw nsɛm. Sɛ wopɛ off-grid infrastructure haw ahorow a ɛfa ho a, hwɛ owia ahoɔden, nsu, ne nwura a ɛnyɛ adwuma yiye, . van asetra ne kar atrae ho nsɛm a egye ntɛmpɛ, na anyinam ahoɔden a wɔtwa ma oxygen concentrators, mframa a wɔde ma, ne CPAP.

Yɛ eyi mprempren¶

1. Hwɛ sɛ batere mu hyew guan, ogya, anaa awuduru mframa a ɛrepue ansa na wode wo nsa aka baabiara a wɔabɔ ho ban. Sɛ wote hua a ɛyɛ dɛ a ɛyɛ dɛ a wɔde yɛ aduru (a ɛma ɛyɛ lithium electrolyte) anaa nkesua a aporɔw (a ɛrefɔw lead-acid hydrogen sulfide gas), te nkwammoaa a ɛrebɔ denneennen, anaasɛ wuhu sɛ wusiw reforo afi batere adaka no mu a, mmue batere dan no mu. Twitwa abɔnten solar array no mu sɛ wubetumi afi abɔnten akɔ hɔ a, tu fi mframa a ɛkɔ soro no mu ntɛm ara, na frɛ 911 (112 anaasɛ 999).
2. Di Sikakɔkɔɔ Disconnect Mmara no so: dum Solar PV Array Disconnect no BERE BIARA ANSA na wobɛtwa Battery Bank no mu afiri MPPT charge controller ho. Sɛ wotwa battery bank no mu bere a owia hann panels da so ara wɔ wired mu wɔ charge controller no mu a, eyi controller no voltage sink no fi hɔ, na ɛma solar open-circuit voltage (\(V_{oc}\)) no kɔ soro na ɛbɔ emu no MOSFETs ne capacitors a wɔde yɛ nneɛma.
3. Di Golden Reconnect Rule no so: BERE BIARA fa Battery Bank no bata charge controller no ho KAN, twɛn sikɔne 30 ma screen no boot na auto-detect 12V/24V/48V, na fa Solar PV Array no bata so LAST. Sɛ wode solar panels no bata multi-voltage controller a enni ahoɔden ho ansa na battery no abata ho a, ebetumi ama controller no akenkan wɔ ɔkwan a ɛnteɛ so panel voltage sɛ 48-volt nhyehyɛe na tow 58 volts gu 12-volt battery bank mu.
4. Ndane battery switch titiriw a wɔato mu wɔ inverter a wɔagyae so da a wunnni kan nhyɛ Capacitors no Pre-Charging. Pure sine wave inverters akɛse a ɛwɔ 1,500-watt kosi 5,000-watt pure sine wave inverters kura DC bus capacitors akɛse a ɛwɔ mu a ɛyɛ adwuma te sɛ 0-ohm dead short wɔ milisecond 50 a edi kan bere a wɔde anyinam ahoɔden abɔ mu no. Sɛ woto batere switch no mu a wunhia ansa na woabɔ no a, ɛtwetwe inrush spike a ɛyɛ 1,000-ampere a ɛma wo lithium BMS no kɔ short-circuit lock-out mu, weld switch contacts no to mu, anaasɛ ɛbɔ wo Class-T fuse no.
5. Sɛ wo inverter anaa Class-T fuse titiriw no awu wɔ sum a ɛyɛ nwini mu a, fa waya a ɛho hia 12V/24V nkwagye adesoa (diesel heater, LED kanea, nsu pɔmpɛ) kɔ battery terminals no so tẽẽ denam inline automotive blade fuse so. AC inverter sɛe watt 15 kosi 40 dɔnhwerew biara bere a ɛrebɔ wɔ idle. Sɛ wotwa inverter a awu ho na ama wo diesel heater a ɛwɔ volt 12 ne telefon charger no agyae battery bank no tẽẽ a, ɛmma bere a wɔde yɛ adwuma no mmɔho anum nkɔ so anadwo biako.
6. Mmɔ mmɔden da sɛ wobɛhyɛ Lithium (\(\text{LiFePO}_4\)) battery a ne cell mu hyew nnu 0 degrees Celsius (32 degrees Fahrenheit) no charge da. Sɛ wo charge \(\text{LiFePO}_4\) battery a ayɛ nwini a, ɛma dade lithium dendrites bɔ carbon anode no so (lithium plating), na ɛsɛe cell no tumi na ɛyɛ ogya a ɛwɔ mu a ɛyɛ short-circuit. Ma batere no mu hyew boro digrii Celsius 5 (digrii Fahrenheit 41) ansa na wode charge current ahyɛ mu.

Gyinaesi dua: Owia nhyehyɛe a ɛyɛ sum a ɛnyɛ nea ɛfa anyinam ahoɔden ho a wɔhwehwɛ mu¶

flowchart TD
    A["Off-Grid Power Outage: Inverter awu anaasɛ Cabin no ayɛ sum"] --> B{"Wusiw, ɛmo a aporɔw anaa aduru a ɛyɛ dɛ hua biara, anaa batere a ɛyɛ hyew?"}
    B -->|"Yiw: Ɔhyew a ɛguan anaa gas"| C["MMUA batere adaka no; tu fi mframa a ɛkɔ soro no mu ntɛm ara na frɛ 911 / 112 / 999"]
    B -->|"Dabi: Nwini na ɛyɛ komm"| D["Susu DC voltage wɔ Battery Studs vs. Busbar denam Digital Multimeter so"]
    D --> E{"Dɛn na multimeter no kenkan wɔ battery terminals no so?"}
    E -->|"0.0V kosi 2.5V wɔ Lithium Battery so (anaasɛ 0V wɔ Fuse akyi) ."| F{"Di kan hwɛ Main Class-T / ANL Fuse no nkɔso"}
    F -->|"Fuse no abɔ (Open Circuit) ."| G["1. Dum Inverter ne PV Array\n2. Hwɛ cables no sɛ awu tiawa\n3. Pre-charge Inverter Capacitors ne Resistor ansa na wode spare Fuse ahyɛ mu"]
    F -->|"Fuse intact: Battery no ankasa kenkan 0V"| H["LiFePO4 BMS wɔ Low-Voltage anaa Short-Circuit Dae Ahobammɔ mu"]
    H --> I["Twa nnesoa nyinaa mu; pre-charge inverter ANAA fa 13.6V wake pulse di dwuma (sɛ battery > 0°C / 32°F nkutoo a)"]
    E -->|"Nneɛma a ɛyɛ den (12.8V / 25.6V / 51.2V) wɔ Battery, Inverter Awu"| J["Hwɛ Inverter DC Breaker, Akyirikyiri On/Off jumper, anaa Low Voltage Cutout"]
    J --> K["Sɛ Inverter no yɛ fried a: Bypass Inverter na fa waya 12V Diesel Heater ne USB Charger fa 15A inline fuse kɔ battery"]
    E -->|"Battery a ɛba fam (<11.5V / 23V / 46V) ne MPPT a Ɛnyɛ Charging wɔ Owia mu"| L["1. Twa PV Array no mu KAN\n2. Hwɛ PV Breakers ne MC4 plugs\n3. San fa Battery no di kan, afei PV Array no"]

Mmara 1: Ntoatoaso a ɛyɛ ahyɛde a wɔde twa MPPT owia ahoɔden controllers no mu na wɔsan de bata ho¶

Wɔ anyinam ahoɔden a ɛtɔ ntɛm mu no, mfomso a ɛtaa ba na ne bo yɛ den sen biara a wɔn a wɔnyɛ anyinam ahoɔden no di ne sɛ wɔbɛsan ahyɛ MPPT (Maximum Power Point Tracking) owia ahoɔden sohwɛfo a wɔahyɛ no nwini denam batere titiriw no a wobedum na wɔasan asɔ bere a owia rehyerɛn wɔ ɔdan atifi no so no so.

1. Nea enti a sɛ wobɛtwa battery no mu bere a solar panels no te ase no fries MPPT controller no¶

Sɛ wopɛ sɛ wote nea enti a nnidiso nnidiso ho hia ase a, hwehwɛ nsonsonoe a ɛda wo dan atifi nhyehyɛe ne wo batere sikakorabea ntam ahoɔden mu:

• MPPT owia ahoɔden nhyehyɛe a wɔtaa de di dwuma wɔ atrae anaa ɔdan mu no yɛ owia ahoɔden a ɛwɔ ahoɔden kɛse 2 kosi 6 a wɔde nhama abɔ mu nnidiso nnidiso, a ɛma 75 kosi 250 volts DC open-circuit (\(V_{oc}\)) (ne ɛkɔ 450 volts DC wɔ hybrid inverters akɛse so).
• MPPT charge controller no mu no, ahoɔhare kɛse buck-converter MOSFET transistors ne inductor coils tu anammɔn saa 150-volt panel input no kɔ fam kodu regulated 14.4 volts (ma 12V bank), 28.8 volts (ma 24V bank), anaa 57.6 volts (ma 48V bank), de battery bank no di dwuma sɛ anyinam ahoɔden buffer to twetwe nsu a ɛreworo so no.
• Dɛn na ɛba bere a battery no twa wɔ adesoa ase: Sɛ wudum battery disconnect switch titiriw no, anaasɛ sɛ wo \(\text{LiFePO}_4\) battery no mu BMS no bue esiane high-voltage cell imbalance anaasɛ cold-temperature cutoff nti, bere a controller no de nsiyɛ repia 40 amperes afi solar panels no so a, current no nni baabiara a ɛbɛkɔ. Wɔ microseconds mu no, magnetic field a ɛrebubu wɔ MPPT inductor no mu no ma inductive flyback voltage spike a ɛboro MOSFETs no breakdown voltage rating so, ɛbɔ controller no mu board no anaasɛ ɛma 12V/24V DC bus voltage no spike boro 60 volts na ɛhyew afiri biara a ɛwɔ 12-volt (diesel heater motherboard, fridge compressor module, nsu pɔmpɛ, ne router) a ɛda so ara wɔ DC fuse block no so.

2. Anamɔn biara a ɛkɔ so pɛpɛɛpɛ Shutdown ne Reboot nnidiso nnidiso¶

Fa agyiraehyɛde a ɛtra hɔ daa hyɛ wo tirim na kyerɛw saa nnidiso nnidiso yi wɔ wo anyinam ahoɔden fasu so:

• Sɛ wobɛma Power Down anaa Reset Charge Controller no (SOLAR FIRST, BATTERY SECOND):
• Anamɔn 1: Dane OFF DC Loads / AC Inverter no ma enti current a emu yɛ duru gyae sen.
• Anamɔn 2: Dane OFF Solar PV Array Two-Pole DC Breaker / Isolator Switch (wɔ owia ahoɔden mfiri ne MPPT controller ntam). Mfa wo nsateaa nyi MC4 solar connectors no fi plug mu da bere a current resen wɔ adesoa ase no; sɛ woyi 150V DC MC4 connector a ɛte ase no fi plug mu a, ɛtwetwe plasma arc a ɛkɔ so tra hɔ a ɛma plastic plug no nwene na ɛma arc hyew. Sɛ wunni PV breaker a, di kan tow ntama a ɛyɛ den a ɛnyɛ hann anaa krataa a wɔde ayɛ krataa gu owia ahoɔden mfiri no so.
• Anamɔn 3: Twɛn sekan 15 ma MPPT controller no PV input akenkan no nkɔ fam nkɔ 0 Volts.

• Anamɔn 4: Dane OFF Battery Breaker / Disconnect Switch (wɔ battery bank ne MPPT controller ntam). Twɛn sikani 60 ma controller LEDs nyinaa nkɔ sum sɛnea ɛbɛyɛ a microprocessor no bɛsan ayɛ adwuma.

• Sɛ wobɛma Charge Controller no ahoɔden (BATTERY FIRST, SOLAR SECOND):

• Anamɔn 1: Fa multimeter hwɛ sɛ wo battery bank no kyerɛ ahomegyeɛ ahoɔden a ɛyɛ papa (boro 10.5V ma 12V, 21V ma 24V, anaa 42V ma 48V).
• Anamɔn 2: Dane ON Battery Breaker / Disconnect Switch FIRST (fa battery bank no bata MPPT controller no de ho BATT + na BATT - terminals bere a owia ahoɔden mfiri no da so ara yɛ nea wɔatwa).
• Anamɔn 3: Twɛn sekan 30 a edi mũ. Hwɛ MPPT screen anaa Bluetooth app no ​​boot up na hwɛ sɛ controller no atoto nominal system voltage a ɛfata (12V, 24V, anaa 48V) ne battery chemistry profile a ɛteɛ (LiFePO4 vs. AGM vs. Flooded Lead-Acid).
• Anamɔn 4: Dane ON Solar PV Array Two-Pole DC Breaker no AWIEI. Wɔ sikɔne 10 kosi 30 mu no, MPPT tracker no bɛpra panel voltage no na afi ase abɔ bulk charge dwoodwoo.

3. Wim tebea a ɛyɛ nwini "Hyper-VOC" (Nea enti a owia ahoɔden sohwɛfo bɔ wɔ anɔpa a owia bɔ kɛse -20°C) .¶

Off-grid nhyehyɛe pii yɛ adwuma awɔw bere ne osutɔbere nyinaa, afei fry wɔn MPPT charge controller anaasɛ tow "Error 20 / PV Over-Voltage Fault" wɔ awɔw bere mu anɔpa a edi kan a emu da hɔ na ɛyɛ nwini.

• The Physics of Cold Silicon: Owia photovoltaic cells ma voltage a ɛkorɔn bere a ɛyɛ nwini. Owia ahoɔden afiri bi datasheet kyerɛw ne Open-Circuit Voltage (\(V_{oc}\)) wɔ aduruyɛdan mu Standard Test Condition (STC) a ɛyɛ +25 digrii Celsius (+77 digrii Fahrenheit). Wɔ digrii biara a ɔhyew no kɔ fam sen +25°C no, panel no ahoɔden kɔ soro 0.30 kosi 0.35 ɔha biara mu digrii Celsius biara.
• The Winter Voltage Spike: Wɔ -25 degrees Celsius (-13 degrees Fahrenheit), 50°C a ɛkɔ fam sen 25°C rating, owia array a open-circuit voltage kɔ soro **16 kosi 18 ɔha biara mu nkyem 100 sen sticker a ɛwɔ panels no akyi no. Sɛ wode nhama 45-volt panels abiɛsa a ɛtoatoa so (\(3 \times 45\text{V} = 135\text{V}\) wɔ 25°C) gu 150V-rated MPPT controller (te sɛ Victron SmartSolar 150/35) mu a, anɔpa a owia bɔ kɛse -25°C bere a sukyerɛmma ahwe ase afi ahwehwɛ no so akyi a, saa nhyehyɛe no kɔ soro kodu 158 Volts DC, ɛboro controller no 150V ceiling na ɛyɛ tiaa input ahobammɔ diode.
• Emergency Field Fix wɔ Freezing Morning: Sɛ wo MPPT controller no da Over-Voltage Fault adi wɔ sub-zero anɔpa a, dum PV breaker no ntɛm ara, kɔ ground-mount anaa roof combiner box no mu, na ** bere tiaa bi yi panel biako fi series string no mu** (dannan 3-in-series string kɔ 2-in-series string) kosi ɔhyew no yɛ hyew, anaasɛ twɛn kosi awiabere bere a owia ahoɔden ma ahwehwɛ nkwammoaa no yɛ hyew na ɛma wɔn ahoɔden so tew sen anohyeto no.

Mmara 2: Sɛnea wobɛdi kan abɔ inverter capacitors sɛnea ɛbɛyɛ a wo BMS ne Class-T fuse no renbɔ¶

Fa no sɛ wo lithium battery bank no bɔɔ ne BMS a ɛwɔ mu no anadwo biako efisɛ adesoa bi maa battery no sae koduu ne 10.0V low-voltage cutoff. Ade kyee anɔpa no, wobɔ mmɔden sɛ wobɛdan battery rotary switch titiriw no asan akɔ ON, na ntɛm ara a wobɛdan switch no, SNAP a ano yɛ den ba, battery BMS no san kɔ 0.0V Short-Circuit Protection mu pɛɛ, anaasɛ wo 250A Class-T fuse titiriw no bɔ.

1. Nea enti a inverter a awu no te sɛ short circuit a awu kɔ Lithium BMS so¶

DC-to-AC inverter biara a ɛwɔ wattage kɛse (1,000W kosi 5,000W) no kura bank a electrolytic DC bus filter capacitors akɛse wɔ ne input studs a ɛyɛ papa ne nea enye no so de ma AC asorɔkye no yɛ mmerɛw:

• Sɛ wɔtwa inverter no mu fi battery ahoɔden mu bɛboro simma 2 a, saa capacitors a ɛwɔ mu no kɔ fam kodu 0.0 Volts na ɛyɛ adwuma te sɛ 0.001-ohm dead short circuit wɔ milisekɔn 10 kosi 50 a edi kan no mu bere a wɔasan de anyinam ahoɔden ahyɛ mu no.
• Sɛ wobɔ 12.8V, 25.6V, anaa 51.2V \(\text{LiFePO}_4\) battery tẽẽ wɔ 0-volt inverter capacitors so a, ɛtwetwe inrush current a ɛyɛ 800 kosi 3,500 amperes ntɛm ara.
• Wo battery no digital BMS chip no hu 2,000-ampere spike, fa no sɛ dead short asi, na snaps ne mu MOSFETs bue wɔ 200 microseconds, gyaw wo system no awu.

2. Akwan abiɛsa a ahobammɔ wom a wobɛfa so Pre-Charge wo inverter capacitors wɔ afuw mu¶

Ɛsɛ sɛ wo hyɛ ("pre-charge") inverter no capacitors no ma kɔ battery voltage mu wɔ sikani 5 kosi 10 denam current-limiting resistor so ansa wobɛto battery switch titiriw no mu anaasɛ wobɛbɔ cable lug a etwa to no mu.

flowchart TD
    A["Ɛho hia sɛ wosan de Battery Bank kɔ Discharged Inverter so"] --> B["1. Dane Inverter Tumi Switch no OFF\n2. Bue Main Battery Switch (anaasɛ gyaw Main Negative Cable Lug a wɔmfa nkɔnsɔnkɔnsɔn nkɔ) ."]
    B --> C{"Adwinnade Bɛn na Ɛwɔ Pre-Charge wɔ Wo Wo nsam?"}
    C -->|"Ɔkwan A: Wɔahyira so Pre-Charge Resistor (10 kosi 50 Ohm, 25W-50W) ."| D["Kura Resistor anim fa Main Switch studs a wɔabue no so simma 8"]
    C -->|"Ɔkwan B: 12V Kar Incandescent Sɔhwɛ Kanea anaa Halogen Anim Kanea Bɔlb"| E["Touch Bulb di anim fa switch studs a wɔabue no so: Bulb hyerɛn kɛse mfiase no, afei ɛyɛ kusuu bere a capacitors ahyɛ ma (sekan 8) ."]
    C -->|"Ɔkwan C: Standard 120V Incandescent Lightbulb anaa Mfitiaseɛ Toaster Element"| F["Fa 120V Bulb anaa Toaster plug no ntini 2 no fa DC switch studs a wɔabue no so simma 10"]
    D --> G["Capacitors mprempren 99% ayɛ ma wɔ Battery Voltage: Zero spark"]
    E --> G
    F --> G
    G --> H["Ntɛm ara dane Main Battery Switch kɔ ON (anaasɛ bolt down lug) wɔ sikɔne 3 mu"]

Di anammɔn 4 a ɛwɔ afuw mu nhyehyɛe yi akyi:

1. Dane Inverter no honam fam ON/OFF switch no kɔ OFF.
2. Paw mprempren-limiting resistor:
3. Nea eye sen biara: A ceramic waya-kuru resistor rated 10 ohms kosi 47 ohms (10W kosi 50W).
4. 12V/24V adwinnade a wɔayɛ no yiye: 12-volt incandescent kar breki-kanea bɔlɔb anaa halogen H4/H7 anim kanea bɔlɔb (ɛnyɛ LED bɔlɔb).
5. Improvised 12V/24V/48V cabin adwinnade: Biribiara non-digital resistive heating appliance a honam fam ON switch flipped on, te sɛ dedaw 60W incandescent kanea, mfitiase non-electronic toaster, electric kettle, anaa basic soldering iron (a ne AC plug prongs abien nichrome resistor a ɛyɛ 12-ohm kosi 100-ohm).
6. Bridge the open gap for 8 to 10 seconds: Bere a battery positive cable titiriw no abɔ mu na main rotary switch nkutoo abue (anaasɛ negative inverter cable lug a wokura mu wɔ wo nsa a wode gloved mu), mia wo resistor, bulb, anaa kettle plug no lead biako so wɔ Battery Side stud no so na kɔ foforo no so tia Inverter Side stud no so 8 kosi 10 full seconds.
7. To main switch no mu ntɛm ara: Wɔ sikani 2 mu bere a woayi resistor no, dannan battery switch titiriw no kɔ ON (anaasɛ bolt cable lug no wɔ stud no so). zero spark bɛba na wo \(\text{LiFePO}_4\) BMS no bɛtena intanɛt so.

Mmara 3: DC fuses a wɔabɔ no a wɔde toto ho na wɔde sesa (Class-T vs. ANL vs. MEGA vs. MRBF) .¶

Sɛ wo multimeter kyerɛ 13.2V (anaa 26.4V / 52.8V) wɔ battery terminals, nanso 0.0V wɔ inverter fã a ɛwɔ wo main fuse holder no so a, wo main fuse no abɔ. Fuse wɔ nsusuwii abien a ɛho hia: ne Continuous Amperage Rating (te sɛ 200A) ne ne Amperage Interrupting Capacity (AIC), current a awu-tiawa a ɛsen biara a fuse no betumi adum a ɛnpae nkɔ plasma arc a ɛkɔ so daa mu.

Mmara 4: Sɛ wobɛnyane "Awuo" (0.0V) \(\text{LiFePO}_4\) Battery wɔ BMS Sleep Mode mu¶

Sɛ \(\text{LiFePO}_4\) battery bi kɔ fam kodu ɔha biara mu 0 State of Charge (bɛyɛ 10.0V wɔ 12V so, 20.0V wɔ 24V so, anaa 40.0V wɔ 48V so) a, ne mu Battery Management System (BMS) bue ne solid-state discharge switch. Afei battery terminals no kenkan 0.0 Volts (anaasɛ phantom 1.2V to 3.8V), na smart MPPT solar controllers ne smart AC chargers pow sɛ wɔbɛdan efisɛ ɛhia sɛ anyɛ yiye koraa no wohu 8.0V kosi 9.0V wɔ terminals no so na ama woahu battery a ɛka ho.

Afuo akwan anan a wɔfa so "Nyan" a ɛda \(\text{LiFePO}_4\) BMS¶

Di kan hwɛ sɛ batere no mu hyew boro digrii Celsius 0 (digrii Fahrenheit 32), twa nneɛma a ɛwɔ dan no mu nyinaa mu, na fa akwan anan yi mu biako di dwuma:

• Ɔkwan 1: Bluetooth App Force-Fi ase anaa Honam fam Reset Pinhole:
• Wɔ Victron SmartSolar MPPT (bere a owia abɔ) so no, bue VictronConnect App no, kɔ Settings > Battery, na fa nsa to nominal voltage (12V, 24V, anaa 48V) no mu sen sɛ wobɛto Auto; MPPT no bɛpia charging voltage akɔ terminals no so na akanyan BMS no wɔ sikani 5 mu.
• Wɔ server-rack batere (EG4, SOK, Pylontech, Epoch) so no, mia anim a ɛwɔ mu no ** .RESET anaasɛ SW** pinhole ne paperclip sikɔne 3 kɔsi 5 de to MOSFETs no mu sikani 30 sɛdeɛ ɛbɛyɛ a wo charger no bɛtumi ato mu.
• Ɔkwan 2: Parallel Jump fi Kar Starter Battery (Ma 12V Systems):
• Fa kar jumper nhama (anaasɛ 12V lithium jump pack a wɔadan akɔ "Manual Override / Boost Mode") di dwuma de ka 12-volt kar starter battery a ɛyɛ apɔwmuden ** wɔ parallel (+ to +, . - to -) wɔ \(\text{LiFePO}_4\) battery terminals a ɛda hɔ no so sekan 10. BMS no bɛte 12.6V nka, abɔ ne MOSFETs no mu, na ama wo solar controller anaa AC charger no afi ase abɔ charge.
• Ɔkwan 3: "9-Volt Wusiw Detector Battery + 3x AA Battery" Nyan Trick:
• Wo hia 12.5 kɔsi 13.5 Volts wɔ 0.01 Amps nko ara wɔ sikani 2 mu na woanyan 12V BMS sense circuit. Kura 9-volt ahinanan batere a ɛyɛ gyinapɛn a efi wo wusiw detector no mu wɔ ntoatoaso mu ne 1.5-volt AA anaa AAA batere abiɛsa (\(9\text{V} + 4.5\text{V} = 13.5\text{V}\)) na ka \(+13.5\text{V}\) na \(-\) de kɔ 12V \(\text{LiFePO}_4\) a ɛda hɔ no so terminals bere a wo solar panels no wɔ owia mu.
• Ɔkwan 4: Wɔma Batere a Ɛyɛ Nwini-Cutoff \(\text{LiFePO}_4\) Yɛ hyew wɔ 0°C (32°F) ase:
• Sɛ wo battery kenkan 12.8V kɔsi 13.1V na ɛma kanea ahoɔden, nanso ɛpow sɛ ɛbɛgye charge biara a, BMS no wɔ Low-Temperature Charge Protection (LTCP) a ɛwɔ 0°C (32°F) ase. Mfa ogyaframa a wɔabue anaa propane kanea nni dwuma wɔ batere kotoku so da. Noa nsuo wɔ wo nsraban mu fononoo so, hyɛ Nalgene nsuo nkotokuo mmienu a wɔatoto mu anaa Mason nkukuo a wɔde mpopaho a ɛyɛ dry ahyɛ mu ma, fa gu batere adaka a wɔabɔ ho ban a ɛwɔ batere no nkyɛn no mu, na to anoano no mu. Wɔ simma 45 mu no, thermistor a ɛwɔ mu no bɛkɔ soro asen +5°C (+41°F) na asan ama wɔatumi abɔ charge.

Mmara 5: Emergency 12V/24V direct-wiring bypass bere a wo AC inverter anaa MPPT controller no ayɛ fried¶

1. Bypassing AC inverter a awu de tu mmirika survival loads tẽẽ wɔ DC¶

Wɔ awɔw bere mu ntɛmpɛ mu no, wo nkwagye nhyehyɛe a ɛho hia (ɔhyew, hann, ne nkitahodi) no yɛ adwuma wɔ 12-volt anaa 24-volt DC so ankasa:

1. Twa AC inverter a awu no fi battery bank no mu koraa sɛnea ɛbɛyɛ a entumi nnyɛ short-circuit anaasɛ ɛrentumi nsɛe battery no.
2. Ma wo Diesel Parking Heater anaa Propane Furnace Blower no ahoɔden tẽẽ: Off-grid diesel air heaters (Webasto, Espar, Vevor) ne RV propane furnace blowers no tu mmirika tẽẽ wɔ 12V DC (twetwe 10A kɔ 12A simma 3 wɔ glow-plug ignition mu, afei 1A kɔ 2A kɔ so). Fa nhama fa heater no positive ne negative kɔ tẽẽ kɔ 12V battery studs no so denam 15-ampere anaa 20-ampere inline automotive blade fuse so.
3. Fa nhama hyehyɛ 12V Socket a egye ntɛmpɛ ma Phone, Medical CPAPs, ne Laptops: Fa 12V sigaret-kanea socket (a ɛwɔ inline 10A fuse) bɔ wo 12V battery terminals so tẽẽ na ama woatumi de 12V USB-C PD kar charger anaa **12V DC CPAP adapter ** (a ɛde ɔha biara mu nkyem 50 a ennu saa di dwuma battery ahoɔden anadwo biako sen sɛ wode CPAP bɛfa AC inverter so).

2. Supervised manual pulse-charging bere a wo MPPT charge controller no ayɛ fried¶

Mfa waya nhyɛ owia nhyehyɛe a ɛwɔ ahoɔden kɛse a ɛtoatoa so (\(80\text{V}\text{ kosi }200\text{V}\)) nkɔ 12V batere so tẽẽ da. Nanso, wɔ nkwa anaa owu tebea a egye ntɛmpɛ a MPPT controller a awu wom mu no, wubetumi ayɛ Supervised Manual Pulse Charge denam panel biako a ɛwɔ ahoɔden a ɛba fam so:

1. Twa series jumpers a ɛwɔ ɔdan atifi anaa fam mount so no mu ma enti wode Single Individual Solar Panel a ne voltage ne wo battery hyia nkutoo na edi dwuma (sɛ ɛbɛyɛ yiye a, 12V nominal panel biako a \(V_{mp}\) bɛyɛ 18V wɔ 12V battery so, anaasɛ 36V-40V panel biako wɔ 24V battery so).
2. Twa 12V/24V electronics a ɛyɛ mmerɛw nyinaa fi DC fuse block no mu bere a worebɔ charge sɛnea ɛbɛyɛ a raw panel voltage ntumi nkɔ wo mfiri ahorow no so sɛ BMS no twa a.
3. Fa 20A anaa 30A DC breaker so fa owia solar panel baako no bata battery no ho bere a worehwɛ digital multimeter a wɔatwitwa wɔ battery no ntam no. Battery ahoɔden a ɛwɔ hɔ ntɛm ara no du 14.0V (ma 12V), 28.0V (ma 24V), anaa 56.0V (ma 48V), fa nsa dannan owia breaker no OFF. Mma nnyaw owia ahoɔden afiri a wɔmfa nhyehyɛe biara nni dwuma a wɔde abɔ mu da a obiara nhwɛ so.

Mpɔtam hɔ ntɛmpɛ nɔma ne adwumakuw no nhyehyɛe ahorow¶

Sɛ anyinam ahoɔden a ɛnyɛ anyinam ahoɔden no di huammɔ ma batere mu gya, nnuru a ɛwɔ mu, anaasɛ mfiri a ɛboa nkwa a egye ntɛmpɛ ba a, fa ɔmantam akwan yi di dwuma:

• Amerika ne Canada:
• Battery Ogya, Thermal Runaway, anaa Nkwa-Mmoa Emergency: Frɛ 911 na ɛyɛ. Sɛ ogya no fa Lithium-Ion / \(\text{LiFePO}_4\) batere anaa Lead-Acid sulfuric acid / hydrogen gas ho a, ka kyerɛ dispatch ntɛm ara.
• Electrical Code & Off-Grid Safety Standards: Hwɛ Ɔman Electrical Code (NEC) Ahyɛdeɛ 690 (Solar Photovoltaic Systems) ne Ahyɛdeɛ 706 (Energy Storage Systems), ne ABYC E-11 / E-13 ma mobile/porine DC installations.
• Extreme Cold Shelter / Warming Center Triage: Sɛ wo off-grid ɔhyew nhyehyɛe no di nkogu wɔ wim tebea a ɛnyɛ zero mu a, frɛ 211 sɛ wɔbɛhwehwɛ baabi a ɛbɛn baabi a ɛbɛn hɔ a wɔde ɔhyew ma ntɛm ara.
• Aman Nkabom:
• Ntɛmntɛm: Frɛ 999 (Ogya ne Nkwagye anaa Ambulance), anaa ** .111** ma aduruyɛ mfiri a ɛnyɛ ntɛmpɛ ho afotu a ɛfa anyinam ahoɔden a asɛe ho. Kyerɛw wo din wɔ wo mantam no Priority Services Register (PSR) anaa frɛ wo NHS Home Oxygen a ɔde ma no nnɔnhwerew 24 ntɛmpɛ nhama.
• Europa Aman Nkabom:
• Ntɛmntɛm: Frɛ 112 wɔ aman a wɔka EU ho nyinaa mu ma batere ogya, acid hyew, anaasɛ hypothermia gye a wogye. Di IEC 60364-7-712 ne IEC 62619 akyi.
• Australia ne New Zealand:
• Ntɛmntɛm: Frɛ 000 wɔ Australia anaa ** .111** wɔ New Zealand. AS/NZS 5139 ne AS/NZS 5033 na ɛhwɛ nneɛma a ɛwɔ off-grid so.
• India ne Asia-Pacific:
• Ntɛmntɛm: Frɛ 112 wɔ India ma ogya ne ayaresa ho nsɛm a egye ntɛmpɛ.

Off-grid anyinam ahoɔden ntɛmpɛ spares kit checklist¶

Ɛsɛ sɛ ɔdan biara a ɛnyɛ anyinam ahoɔden, kar, hyɛmma, anaa ofie dan biara de anyinam ahoɔden a wɔde twitwa nneɛma a egye ntɛmpɛ yi sie adaka a ɛyɛ dry a wɔakyerɛw so wɔ panel titiriw no nkyɛn mu:

• 1.1. Digital True-RMS Multimeter with Spare Batteries: Ɛhia sɛ wɔsɔ terminal voltage ne fuse kɔ so hwɛ.
• 2.1. Spare Main Battery Fuses Abien (Class-T, MRBF, anaa ANL) + Spare Blade Fuses (10A, 15A, 20A, 30A): Fa spare fuses no hyɛ anyinam ahoɔden kabinet no mu.
• 3.1. Dedicated Pre-Charge Resistor (25-Ohm to 47-Ohm, 25-Watt Ceramic Wire-Wound Resistor): Klik wo battery switch titiriw no so simma 8 ansa na woadan switch no wɔ BMS akwantu biara akyi.
• 4.1. 12V/24V Alligator-Clip-to-Cigarette-Lighter Bypass Cord with Inline 15A Blade Fuse: Ɛma wo diesel heater, telefon charger, anaa 12V CPAP no ahoɔden dum battery terminals no tẽẽ sɛ wo busbar anaa inverter no di huammɔ a.
• 5.1. Insulated 10mm, 13mm, 14mm, ne 17mm Adaka Safe a Wɔakyekyere no wɔ 3 Layers of Electrical Tape: Siw akwanhyia mu terminal-to-terminal short circuits ano.

Nsɛm a wɔtaa bisa¶

Dɛn nti na ɛsɛ sɛ mitwa owia ahoɔden mfiri no mu bere nyinaa ansa na matwa battery bank no afi me charge controller no mu?¶

MPPT owia ahoɔden controller de battery bank a ɛka ho no di dwuma sɛ ne voltage reference ne ne electrical buffer nyinaa de twetwe current a ɛsen fa ne step-down inductors a ɛwɔ mu no mu. Sɛ wotwa batere no mu bere a owia hann panels da so ara repia ahoɔden akɔ controller no mu a, adesoa no a ɛyera mpofirim no ma inductive voltage spike a ɛba ntɛm ara a ebetumi abɔ controller no mu MOSFET transistors no na ama volts 50 kosi 150 a ɛrehuruhuruw akɔ mfiri biara a ɛwɔ volt 12 a ɛda so ara de nhama abɔ DC bɔs no mu.

Dɛn nti na me lithium battery BMS no hwe ase kɔ short-circuit ahobammɔ mu bere biara a mɛbɔ mmɔden sɛ mɛdan me inverter switch no?¶

Sine asorɔkye inverter akɛse a ɛho tew no kura DC capacitors akɛse a ɛwɔ mu a ɛtwetwe kɔ zero volts bere a wɔatwa mu no. Sɛ wodannan batere no switch no a, saa capacitors a hwee nni mu no yɛ adwuma te sɛ 0-ohm dead short wɔ milisecond 20 a edi kan no mu, na ɛtwetwe inrush spike a ɛyɛ 1,000- kosi 3,000-ampere a ɛkanyan lithium battery no ahobammɔ tiawa. Sɛnea ɛbɛyɛ na woasiw eyi ano no, kura 10-ohm kosi 50-ohm resistor, 12-volt incandescent kar bɔlɔb, anaasɛ plug prongs abien a ɛwɔ mfitiase non-digital toaster no so fa switch terminals a wɔabue no so simma 8 na woadi kan abɔ capacitors no charge ansa na woadan switch no atoto mu.

Mɛyɛ dɛn akanyan LiFePO4 battery a ɛkenkan 0.0 volts wɔ multimeter so bere a me smart charger no pow sɛ ebehu no?¶

Sɛ LiFePO4 battery bi kɔ ne low-voltage cutoff a, ne mu BMS bue ne solid-state switch ma enti terminals no kenkan 0 volts, a ɛmma smart solar controllers ne AC chargers ntumi nhu sɛ battery bi abata ho. Di kan hwɛ sɛ batere no ho yɛ hyew sen digrii Celsius 0 (digrii Fahrenheit 32), twa adesoa no nyinaa mu, na afei fa jumper cables a efi kar batere mu, jump pack a ɛwɔ manual override mode mu, anaa force-charge nhyehyɛe a ɛwɔ wo solar controller no Bluetooth app mu no di dwuma tiawa 12.6- kosi 13.6-volt wake pulse wɔ terminals no so simma 5 kosi 10.

Dɛn nti na me MPPT charge controller no tow PV Over-Voltage mfomso wɔ awɔw bere mu anɔpa a na awɔw wom bere a na ɛyɛ adwuma yiye awɔw bere nyinaa no?¶

Owia hann nkwammoaa ma wɔn ahoɔden a ɛbue ($V_{oc}$) kɔ soro bɛyɛ ɔha biara mu nkyem 0.30 kosi 0.35 wɔ digrii Celsius biara a ɔhyew no kɔ fam sen +25 digrii Celsius (+77 digrii Fahrenheit). Wɔ awɔw bere mu anɔpa a owia bɔ kɛse -25 degrees Celsius (-13 degrees Fahrenheit) anɔpa no, panel ahorow a ɛtoatoa so no ma ahoɔden a ɛkorɔn ɔha biara mu nkyem 16 kosi 18 sen ne datasheet rating, a ebetumi apia ahohuru bere mu volt 135 nhyehyɛe a atwam atwa 150-volt controller ceiling. Dum PV breaker no ntɛm ara na twa panel biako ho hyia bere tiaa bi fi series string no mu bere a awɔw wom kɛse no.

So metumi de kar ANL anaa MEGA fuse a ne bo nyɛ den asi Class-T fuse a abɔ a ɛwɔ lithium battery bank so no ananmu?¶

LiFePO4 battery bank kɛse bi wɔ emu ahoɔden a ɛba fam koraa na ebetumi de amperes 5,000 kosi 10,000 akɔ short circuit a awu mu. Wɔde silica anhwea a ɛma arc-dum a wɔahyɛ sɛ ɛbɛtwa DC current a ɛyɛ amperes 20,000 mu dwoodwoo ahyɛ Class-T fuses ma, bere a standard 32-volt automotive MEGA fuses ne cheap no-name ANL fuses wɔ interrupt ratings a ɛba fam (2,000 amperes anaa nea ennu saa) na ebetumi akura plasma arc na ɛpae ogyaframa mu sɛ tiawa bi a awu ba, titiriw wɔ so 24-volt anaa 48-volt nhyehyɛe ahorow.

Dɛn nti na asiane wom sɛ wobɛbɔ lithium iron phosphate (LiFePO4) batere a ɛwɔ nwini ase, bere a ɛretu brɛoo mpo?¶

Sɛ nsu electrolyte a ɛwɔ LiFePO4 nkwammoaa mu no kɔ fam sen digrii Celsius 0 (digrii Fahrenheit 32) a, lithium ions ntumi nkɔ (nhwe ase) ntɛmntɛm sɛnea ɛsɛ wɔ graphite anode no nketenkete a ɛwɔ soro no mu bere a wɔrebɔ charge no. Mmom no, dade lithium mprɛte gu anode no ani daa, na ɛsɛe batere no tumi na ɛma dade nnade nketenkete (dendrites) a ɛyɛ nnam a ɛte sɛ nea ɛyɛ nnam a ebetumi ato mu ntini a ɛpaapae mu no na ama ogya a ɛwɔ mu no atɔ tiawa. Bere nyinaa ma lithium batere a awɔw wom no hyew boro digrii Celsius 5 (digrii Fahrenheit 41) ansa na woabɔ.

Akwankyerɛ ahorow a ɛfa ho¶

• Owia ahoɔden, nsu, ne nwura a ɛnyɛ adwuma yiye
• Van asetra ne kar atrae ho nsɛm a egye ntɛmpɛ
• Tumi a ɛtwam ma oxygen concentrators, mframa a wɔde ma, ne CPAP
• Ntamadan ne tarp ɔhyew ahobammɔ: ntamadan mu ogya ne carbon monoxide a wosiw ano

Fibea ne aban akwankyerɛ¶

• Ɔman Ogya Ho Banbɔ Fekuo (NFPA): Ɔman no anyinam ahoɔden Mmara (NEC / NFPA 70) Ahyɛdeɛ 690 (Owia hann a ɛbɔ ho ban) ne Ahyɛdeɛ 706 (Ahoɔden a wɔde sie).
• Amerika Ahyɛmma ne Ahyɛmma Bagua (ABYC): Standard E-11 (AC ne DC Electrical Systems on Boats) ne Standard E-13 (Lithium-Ion Batteries: Overcurrent Ahobammɔ ne Ntwitwiridii Tumi a Wɔhwehwɛ).
• U.S. Ahoɔden Dwumadibea (DOE) ne Ɔman Ahoɔden a Wɔyɛ Foforo Nhwehwɛmubea (NREL): Photovoltaic Array Open-Circuit Voltage Temperature Coefficient Engineering Akwankyerɛ.
• Amanaman Ntam Electrotechnical Commission (IEC) ne Standards Australia: IEC 62619 (Ahobanbɔ ahwehwɛde ma Lithium Nkwammoaa ne Batere a Ɛto so Abien) ne AS/NZS 5139 (Battery System Installation Safety).