Battery Ntsa Ah ngu ai lachyum gaw hpa rai ta? Amp hkying hkum masat masa

Ngai gaw client langai ngai ngai hpe kade lang shaga nna, shanhte a "200Ah battery bank" hta hpa majaw hkying hkum 3 daram sha na ai hpang juice htum mat ai hpe san ai hpe hti n lu mat sai, math gaw 8 tup hkam ra ai ngu tsun ai. Mahtai kadun? Label ntsa kaw ka da ai Ah nambat gaw masha law malawng myit ai lachyum n re.

Battery ntsa kaw Ah ngu ai lachyum gaw hpa rai ta?Dai gaw ampere-hour- hpe tsun ai rai nna, battery hta wan n-gun kade daram rawng ai hpe shadawn ai. Dai hpe mawdaw kaba hta na sau tank zawn myit yu u. 100-gallon tank gaw capacity hpe tsun dan ai raitim, nang teng sha kade tsan ai de mawdaw gau na hpe n tsun dan ai. Dai gaw nang htaw ai gun rai, lamu ga, nbung laru, na a engine gaw sau-sipper (sh) gas-guzzler re ai hta madung nga ai.

Battery ni mung dai zawn sha bungli galaw ai. 100Ah rating ngu ai gaw, battery gaw hkying hkum mi hta 100 amps, shing nrai hkying hkum shi hta 10 amps, shing nrai hkying hkum latsa hta 1 amp hpe theoretical hku nna jaw lu ai ngu ai lachyum re. Raitim "theoretically" ngu ai gaw dai ga si hta grai li ai sharawt ai lam galaw nga ai.

Ndai gaw, hpaga yumga galaw ai shara, hpaga yumga galaw ai shara, shing nrai, utility project a matu battery mari ai kadai mung, teng sha ahkyak ai lam rai nga ai: datasheet hta ka da ai hte, tengman ai mungkan hta dan dawng ai lam lapran na gap hkat ai lam hpe chye na ai lam. Ndai hpe shut kau yang, nang galoi mung n lang na capacity a matu gumhpraw jaw nga ai (sh) na a backup system gaw mid-outage hpe tap kau ai shaloi, n-gun n rawng ai.

Math gaw asan sha re. Tengman ai lam Nre.

Madung formula gaw grau loi ai n mai byin ai:

Runten=Battery n-gun (Ah) ÷ Ya aten hta n-gun (A)

100Ah battery lu sai kun? 10-amp load hpe lang ai kun? Dai gaw hkying hkum 10 daram runtime re. Galaw ngut sai.

Dai hta lai nna... teng sha n re. Laboratory shinggan kaw battery langai mi gaw shi a rated capacity hpring tup hpe teng sha jaw ya lu ai hpe ngai galoi mung n mu yu ai. Ndai kaw dai formula gaw field kaw hpa majaw hkrat sum mat ai hpe yu ga:

Discharge Rate Manghkang

Battery galaw ai ni gaw masa langai ngai hta n-gun hpe chyam yu ai-galaw madang hku nna hkying hkum 20 laman hta n-gun n-gun n-gun yawm ai (C/20 rate ngu shamying ai). Na a 100Ah battery gaw hkying hkum 20 tup tup 5 amps sha htu nna dai rating hpe lu la ai.

Raitim na a backup system gaw 5 amps n shapraw ai. Dai gaw 50. Shing nrai 100. Bai nna, dai daram alawan current hpe gang dat ai shaloi, rated capacity hte ni ai shara de mung n du lu ai.

Katsi kahtet ai lam

Battery ni gaw ngai zawn sha katsi ai hpe n dawng n yawt ai. Katsi ai shara hta, 70-75% daram sha rated capacity lu la na re. -20℃hta ? Nang gaw daw mi rai na re ngu yu nga ai.

Minnesota kaw ngai hta client langai mi nga ai, shi gaw shanhte a shinggan telecom backup hpe summer galaw ai lam hpe madung tawn nna spec'd galaw ai. Shawng nnan cold snap galaw ai shaloi, system hkrat sum mat ai. Manu dan ai sharin hpawng.

Hpaji masa garan ginhka ai lam

Ndai gaw kaba dik ai rai nna, manu dan dik ai shut ai lam ni hpe ngai mu lu ai shara re.

100Ah lead-acid battery hte 100Ah lithium battery gaw langai sha n re. Ni htep ai pyi n re. Sedan mawdaw langai hta 100-gallon tank hpe semi truck langai hte shingdaw ai hte bung ai, lang mai ai range gaw tsep kawp shai ai.

Hpa majaw Lead-Acid hte Lithium Ah Rating ni hpe hkrak n mai shingdaw ai

1800 ning htum wa maga de, Germany mungdan na hpaji ninghkring langai mi rai nga ai Wilhelm Peukert gaw, n mai byin ai lam langai hpe sawk sagawn wa ai: battery langai hpe lawan ai hku htum mat wa yang, dai kaw na pru wa ai total energy gaw n law wa magang re. Shi a math gaw dai ni du hkra anhte hpe naw zingri nga ai.

Ndai kaw tatut galaw mai ai ladat hpe yu ga: Lead-acid battery ni hta kata lam n-gun grai ja ai. Heavy current hpe gang dat ai shaloi, na a jak hpe n-gun jaw na malai, battery kata na katsi ai hku nna n-gun law law hpe jahten kau ya ai. Peukert exponent gaw ndai-lead-acid battery ni hpe 1.2 kaw nna 1.6 du hkra shadawn shadang masat da ai, lachyum gaw n-gun kaba ai npu hta n-gun kaba sum mat ai lachyum re.

Lithium batteri ni kun? Shanhte a Peukert n-gun gaw 1.02 kaw nna 1.05 grup yin rai nga ai. N-gun n rawng ai daram rai nga ai. Nang kade daram n-gun dat ai hpe n sawn ai sha, full rated capacity hte ni dik ai hpe lu la ai.

Chart hta sang lang dan ai: 100Ah ngu masat da ai lead-acid battery gaw hkying hkum 20 nre ai sha hkying hkum 2 jan n-gun yawm mat yang 55Ah daram sha jaw lu ai.Lithium battery mung dai zawn re ai masa hta 98Ah jaw lu ai. Label langai sha, grai shai ai hkrang shapraw ai lam.

Raitim, lead-acid a matu grau sawng wa ai. Battery hpe n sat kau ai sha mung capacity tup n mai lang ai.

Deep-lead-acid battery hpe 50% charge npu de ayan jahkrat kau yang, shi a prat hpe grai kadun shangun na re. Manufacturer law malawng gaw 50%- hta jan nna nga na matu hpaji jaw ma ai, lachyum gaw na a "100Ah" battery gaw teng sha 50Ah lang mai ai atsam jaw ai.

Lithium battery ni gaw 80-90% sung ai n-gun hpe ayan na hkam la lu ai, nkau mi gaw 100% pyi hkam la lu ai. Na a 100Ah lithium battery gaw 80-90Ah lang mai ai atsam hpe jaw ya lu ai.

Ndai hpe tengman ai nambat ni hpe bang dat ga:

Ah masat masa langai sha re. Lithium battery gaw lang mai ai n-gun htam lahkawng daram jaw ya ai.

Ndai lam hpe telecom hte hpaga lam ni hpe gram lajang ai lam ni hta ayan byin nga ai hpe anhte mu lu ga ai. Kade nna ai aten hta galaw ai bungli masing langai hta, 400Ah n-gun ja ai lead-acid bank hpe kam hpa nga ai tsan ai telecom npawt nhpang dap langai lawm ai. Operator wa myit n pyaw mat ai gaw, shanhte ra ai hkying hkum 6 hta na hkying hkum 3 daram sha backup power-grau n law ai hpang, voltage sag gaw n law ai-voltage cutoffs ni hpe matut nna shabyin ya ai majaw re.

Anhte gaw dai kaba dik ai bank hpe 200Ah 48V LiFePO4 rack module ni hte galai kau ga ai. Mahtai kun? Ndai system nnan gaw hkying hkum 5 jan stable runtime jaw ya ai, hpa majaw nga yang, site a n-gun kaba ai npu hta Peukert sum ai lam n hkrum ai majaw re. Client gaw 60% n law ai system kaw na 60% jan real-mungkan runtime hpe hkrak hkra lu la ai. Dai gaw 2019 lapran na shai hkat ai lam re.Battery ntsa Ah ngu ai lachyum hpe chye na aitheory hta hte tatut hta hpa jaw ya ai hpe shingdaw yu ai.

Spec Sheets ni hta lawm ai C-Rating ni gaw teng sha hpa lachyum pru ai kun?

Battery datasheet ni hpe htu yu yang, "C-rates" n bung ai hta n-gun atsam hpe ka da ai hpe mu lu na re. Ndai gaw marketing fluff n re-dai nambat hpe galaw ai wa gara hku chyam yu ai hpe hkrak tsun dan ai re.

C/20 ngu ai gaw hkying hkum 20 jan battery n-gun yawm mat ai hpe tsun mayu ai. C/10 ngu ai gaw hkying hkum 10 ngu ai re. C/5 ngu ai gaw hkying hkum 5 ngu ai re.

Hkap la lu ai lam: n bung ai galaw shapraw ai ni gaw shanhte a headline specs a matu C-rates n bung ai hpe lang ma ai. Budget brand nkau mi gaw C/100 (hkying hkum 100 tup pru ai) hta chyam yu nna shanhte a Ah nambat hpe jat ya ai. Dai 100Ah battery hpe C/100 kaw chyam yu ai kun? Premium galaw ai ni lang ai C/20 rate hta 70Ah sha jaw lu na re.

Gara battery lahkawng hpe mung n shingdaw shi yang, C-rate hpe yu yu ga. Shanhte n bung ai rai yang, shingdaw ai lam gaw lachyum n pru ai.

Sanity hpe lawan ai hku jep yu ai: battery langai mi gaw manu -per-Ah hta grai kaja ai zawn rai yang, shanhte gara C-rate lang nga ai hpe jep yu u. "Bargain" battery hpe na a application majing hte n bung ai masa ni hta chyam yu ai hpe nang law law lang mu lu ai.

Ah hte Wh hte kWh: Na a Unit ni hpe dingyang lu la na matu

Ndai lam gaw masha ni hpe galoi mung trip up galaw ai. Ngai asan sha tsun dan mayu ai.

Ah (ampere-hkying hkum)charge capacity-kade daram aten laman kade daram current nga ai hpe tsun dan ai.

Wh (watt-hkying hkum)n-gun atsam-voltage a matu teng sha jai lang mai ai n-gun jahpan hpe tsun dan ai.

Galai shai ai lam:N-gun (Wh)=Atsam (Ah) × N-gun (V)

12V, 100Ah battery langai gaw 1,200Wh hpe shinggyin la lu ai. 48V, 100Ah battery langai gaw 4,800Wh hpe shinggyin la lu ai.

Voltage hpe mali lang, energy hpe mali lang-label ntsa kaw "100Ah" ngu ka da ai raitim.

Vendor amyu myu kaw na quote ni hpe shingdaw ai shaloi, galoi mung Wh (sh) kWh de galai kau u. Ngai gaw, mari ai hpung ni gaw, voltage platform amyu myu hta Ah nambat ni hpe shingdaw ai majaw, n myit mada ai sha, shut ai system hpe order galaw ai hpe mu yu sai.

Masha law malawng lang ai configuration ni a matu lawan ai hku hti yu mai ai:

Tengman ai jai lang ai lam ni: Na a teng man ai ra kadawn ai lam ni hte Ah hpe shingdaw ai

Theory law law nga ai. Common hpaga lam hte hpaga lam hta jai lang na matu nang teng sha ra ai atsam hpe tsun dan ga.

Ahkyak ai lit ni a matu Backup Power

Sizing galaw ai lam gaw na a load audit kaw nna hpang ai. Hpa gaw n-gun n rawng ai aten hta tsep kawp n-gun rawng ra ai, kade daram na hkra galaw ra ai kun?

Ndai kaw ngai client ni hpe gara hku hkawm sa ai:

Lahkam 1: Critical load shagu hte shi a ya na draw hpe ka da u

Hkyak hkyak nhtoi: 5A

Hkamja lam hte seng ai ladat ni: 3A

Network/IT jak ni: 15A

HVAC hkang ai lam: 8A

Yawng: 31A

Lahkam 2: Ra ai runtime hpe dawdan u

Kalang lang ra ai: Generator n-gun n-gun (sh) grid bai nhtang wa ai aten du hkra hkying hkum 4

Lahkam 3: Base capacity hpe sawn la u

31A × hkying hkum 4=124Ah kaji dik htum

Lahkam 4: Tengman ai-mungkan lam ni hpe jai lang u

50% DoD hta lead{0}acid lang ai rai yang: 124 ÷ 0.50=248Ah

124 ÷ 0.80=155Ah hta LiFePO4 hpe 80% lang ai rai yang.

15% asak kaba wa ai n-gun hpe jat bang u: 285Ah (hpyen n-gun) shing nrai 178Ah (lithium)

Lahkam 5: Lu ai size ni de shinggrup u

Hpyen n-gun: 300Ah ladat

Asak hkrung lam PO4: 200Ah ladat

Application langai sha re. Lithium system gaw kaji ai, n-gun n law ai, upfront manu grau tsaw tim, shi a prat tup hta manu n law ai.

Peak Shaving hte ra kadawn ai manu jahpu hpe shayawm ya ai

N bung ai jahpan hpe tsep kawp. Ndai kaw nang gaw nang shave galaw ra ai demand spike hte na a peak demand window a aten ladaw hpe madung tawn nna sizing galaw nga ai.

Na a shara gaw hkying hkum 2 na shana aten hta 500kW peak ni hpe hkra ai rai yang, dai peak kaw na 200kW hpe shave galaw mayu ai rai yang:

N-gun ra ai: 200kW × hkying hkum 2=400kWh

400V system a matu: 400,000Wh ÷ 400V=1,000Ah

Raitim, inverter a akyu (~95%) hte discharge a sung ai shadawn sharam ni hpe mung myit yu ra ai. Tengman ai-mungkan sizing gaw 400V hta 1,200-1,300Ah rai na re.

Peak shaving a matu sizing galaw ai shaloi, asan sha nga ai Ah ratings ni hta lai nna, -C-rate tsaw ai bungli galaw ai lam de yu ra ai. Anhte gaw, n-gun ja ai ra kadawn ai lam ni hpe hkrum sha nga ai galaw shapraw ai shara langai a matu, 215kWh liquid-katsi ai C&I cabinet hpe, nau nna ai aten hta, n-gun dat ga ai. Shanhte gaw shana shagu minit 15 daram power spike hpe flatten galaw na matu lawan ai hku discharge galaw ra ai.

Standard "energy-cell" ngu ai battery gaw dai n-gun npu hta grai katsi mat na (sh) n-gun yawm mat na re. 1C hpe n-gun dat shapraw lu ai, n-gun ja ai-performance cell ni hte system hpe sizing galaw ai hku nna, anhte gaw dai shara hpe shanhte ra sharawng ai manu hpe shata mi $2,800 daram shayawm ya lu ai. Ndai system gaw 3.5 ning jan hta shi hkum shi manu jahpu jaw wa ai-laika ntsa hta Ah rating grau tsaw ai majaw n re, grid ra kadawn ai lam grau law ai shaloi dai n-gun hpe teng sha jaw lu ai majaw re.

Jan + Hkringmang Dap

Battery ni hpe solar hte pairing galaw ai shaloi, nang gaw lam lahkawng hpe rap ra hkra galaw nga ai: shana aten na lit ni hpe shinggrup lu na matu shani aten na n-gun dat hpe shinggyin tawn da ai, sumwi-shani hkam sharang lu na matu ra ai atsam nga ai.

Hpa majaw nga yang, n-gun rawng ai solar-plus-hpaji masa gaw, hkying hkum 2-4 daram n-gun rawng ai aten hta battery bank hpe size galaw lu na re. Na a shara gaw shana aten hta 50kW average galaw nna hkying hkum 3 tup shingbyi shara ra ai rai yang:

50kW × hkying hkum 3=150kWh

Ndai shara gawPolinovel a shinggan na htingnu BESS hparan ladat nioften fit well-shanhte gaw ndai zawn re ai hpaga lam a matu jan n-gun hpe shingdaw ai lam a matu hkrak sha galaw da ai rai nna, modular configurations hta 120kWh kaw nna 1MWh daram du hkra atsam nga ai.

Battery jaw ai ni hpe jep joi ai shaloi, hpraw ai masat dingsat ni

Ndai bungli hta shaning law law galaw ngut ai hpang, battery specs a matu grai kam mai ai BS detector langai hpe galaw shapraw da sai. Ndai kaw yu ra ai lam ni hpe ka da ai:

N teng n man ai C-rates hta atsam hpe chyam yu ai

Headline Ah nambat hpe C/100 kaw chyam yu ai raitim, na a application hpe C/5 kaw discharge galaw ai rai yang, dai spec gaw nang a matu akyu n nga ai. Na a teng sha myit mada da ai hka pru ai n-gun hta capacity data hpe san yu u.

Katsi kahtet ai lam hpe masat da ai lam n nga ai

Tara shang galaw shapraw ai ni shagu gaw, nbung laru a matu capacity derating curves ni hpe shapraw ai. Shanhte gaw temperature context n lawm ai nambat langai sha jaw ai rai yang, shanhte gaw lama ma makoi da ai re.

DoD masa n lawm ai sha, cycle prat hpe tsun ai

"10,000 cycles" ngu ai gaw, fine print hpe hti nna, 50% sung ai shara kaw nga ai hpe mu tam ai aten du hkra, grai kaja ai zawn na lu ai. 80% DoD hta, battery langai sha gaw 4,000 lang sha lang lu na re. Galoi mung san u: gara DoD kaw cycles galaw ai kun?

Lead{0}}acid a matu Peukert jahpan n nga ai

Lead-acid battery galaw ai company langai mi gaw Peukert exponent hpe n tsun dan ai rai yang (sh) n bung ai n-gun dat dat ai n-gun dat ni hta n-gun dat curve ni hpe n jaw ai rai yang, pru mat wa u. Shanhte a nambat n kaja ai hpe chye ma ai.

"Maren sha Ah" masat masa ni

Nkau galaw shapraw ai ni-grau nna lithium shara hta-shanhte a battery hpe lead-acid hte shingdaw ai "maren sha Ah" ngu ai masat masa ni hpe lang ma ai. "100Ah hte maren" ngu ka da ai battery gaw teng sha 50Ah rai na re. Technically hku masu ai n re, raitim nang hpe myit ru myit tsang shangun na matu galaw da ai re.

Anhte a engineering Lab kaw, cell batch shagu hpe module langai mi de n shang shi yang, grai sadi maja let jep joi ai lam galaw ga ai. Ah ratings tsaw ai ngu tsun tim, load npu hta hkrat sum ai "bargain" cell ni hpe anhte ayan ningdang kau ga ai. Ga shadawn, anhte gaw, shinggan na supplier langai kaw na cell sample hpe, 1 amp (C/100) hta kaja hkra galaw ai raitim, 50 amps (0.5C)- hpe gang je kau ai shaloi, 65Ah de hkrat sum mat ai hpe, nau nna ai aten hta chyam yu ga ai.

Dai majaw anhte a datasheet tara ni hpe grai ja ai: anhte a .hpaga lam hte seng ai BESS atsam marai nitrickle discharge n re ai sha, tengman ai bungli galaw ai hka leng ni hpe madung tawn ai. Supplier langai mi gaw 0.5C (sh) 1C kaw na discharge curve hpe n madun ai rai yang, shanhte a battery a tengman ai bungli galaw ai lam hpe makoi da ai re.

Grid-Scale hte hka htung hta bang da ai BESS a matu shadawn shadang

Utility-scale project ni a matu, anhte gaw langai hkrai a Ah ratings hpe n tsun sai-anhte gaw cell wan hku law ai kaw na gawgap da ai aggregated MWh atsam hpe tsun nga ai.

RaitimBattery ntsa Ah ngu ai lachyum hpe chye na aicell madang hta naw ahkyak nga ai, hpa majaw nga yang, dai gaw system design hpe jep joi nna, specification shut ai lam ni hpe rim la lu na matu karum ya ai.

Ndai kaw gaw, shinggyim masha ni lang ai container system a matu math gara hku galaw ai hpe yu ga:

Masha law malawng lang ai cell hkrang langai gaw 280Ah LiFePO4 prismatic cell hpe 3.2V ngu ai hku lang ai.

Cell langai a n-gun: 280Ah × 3.2V=896Wh ≈ 0.9kWh

5MWh hka htung langai a matu: 5,000kWh ÷ 0.9kWh=~5,556 cells ra ai

Ndai cell ni hpe series string (voltage hpe gawgap na matu) hte parallel string (capacity hpe gawgap na matu) hku nna lajang da ai. Kalang lang galaw ai ladat gaw:

= 51.2V module hta cell 16 nga ai

= 400-800V rack hta module law law

Parallel hta rack law law=MWh atsam hpe yaw shada ai

Container hta bang da ai BESS quote ni hpe jep joi ai shaloi, jep yu u:

Cell-madang Ah masat masa hte galaw shapraw ai wa

Series/parallel hkrang shapraw ai lam

Yawng sawn la ai n-gun gaw tsun da ai atsam hte bung ai

Hkrunlam -hkrun lam a akyu (galaw madang 85-92%)

Karum n-gun jai lang ai lam (katsi ai, BMS) gaw jai lang mai ai atsam hpe shayawm ya ai

Polinovel a hka htung hta bang da ai BESS ladat ni3.85MWh kaw nna 5MWh+ du hkra, LiFePO4 cell ni hpe laksan hku nna shanhte a grau kaja ai cycle prat hte n-gun ja ai -n-gun rawng ai shara ni hta n-gun rawng ai shara ni hta lang ai.

Battery Ah Ratings ni a lawu na lam

Yu ai,Battery ntsa kaw Ah ngu ai lachyum gaw hpa rai ta?theory hku nna gaw n yak ai. Charge galaw lu ai atsam hpe shadawn ai lam re. N-gun lu na matu voltage hte garan dat u. Runtime hpe sawn la na matu load current hte garan yu u.

Dai yak hkak ai lam gaw, dai theoretical atsam hpe jahten kau ya ai tengman ai-mungkan lam yawng kaw na pru wa ai: hka pru ai lam a akyu ni, nbung katsi ai lam hpe shayawm kau ai lam, hka pru ai lam a shadawn sharam a sung ai-, hte chemistry shai hkat ai lam ni.

Ngai bungli galaw ai manu dan ai shut ai lam ni hpe koi gam ai client ni gaw:

Galoi mung lang mai ai kWh de galai kau u, mying jahpan n re Ah .

Atsam chyam dinglik na matu lang ai C-rate hpe jep yu u

Shanhte a makau grup yin a matu nbung katsi ai hte asak kaba wa ai hpe shayawm kau ai

Ah yawng hpe maren mara hku sawn la ai hta, lithium a tengman ai akyu a matu size

Lab masa hta n re ai sha, shanhte a bungli galaw ai masa hta, supplier ni hpe data san yu u

Dai lam manga hpe galaw dat yang, myit mada da ai hte maren teng sha galaw lu ai system ni hpe spec galaw na re.

Galoi mung san ai ga san ni

Laika buk ni

1897 ning hta ka da ai. "Lamu ga shingra tara hpe n-gun jaw ai lam hpe n-gun jaw ai lam hpe n-gun jaw ai lam galaw ai." Wan jak hpaji hte seng ai laika buk.

Battery Dakkasu kaw na. "BU-503: Battery lang ai aten hpe gara hku sawn la na." battery dakkasu.com

IEEE 1188-2005 du hkra re. "Stationary Application ni a matu VRLA Battery ni hpe gram lajang ai, chyam dinglik ai, galai shai ai lam ni a matu IEEE kaw nna hpaji jaw da ai ladat."

IEC 61427 hta lawm ai. "Bai gram lajang mai ai n-gun hpe shinggyin la na matu lahkawng ngu na cell hte battery ni-General ra kadawn ai lam ni hte chyam dinglik ladat ni."