Depth of discharge (DoD) yɛ ɔha biara mu nkyem 100 wɔ battery ahoɔden a wɔde adi dwuma dedaw no mu. Battery a ɛde ne tumi 30% ama no wɔ 30% DoD ne bɛyɛ 70% state of charge.
Saa nɔma biako no na esi nneɛma abiɛsa a mfaso wɔ so ho gyinae: ahoɔden dodow a wubenya ankasa wɔ kyinhyia biara mu, sɛnea ɛsɛ sɛ batere sikakorabea no yɛ kɛse, ne kyinhyia dodow a batere no de bɛma ansa na adu n’asetra tumi awiei-. Saa akwankyerɛ yi ka DoD formula, nsonsonoeɛ a ɛda DoD ne state of charge ntam, layers a ɛyera wɔ nameplate kWh ne AC ahoɔden a wɔde ama ntam, ne sɛdeɛ wɔbɛpaw adwumayɛ mfɛnsere amaowia ahoɔden, backup power ne aguadi anaa utility battery ahoɔden a wɔkora so nhyehyɛe. RV ne wɔn a wɔde po so hyɛn di dwuma no behu sɛ akontaabu no yɛ pɛ, ɛwom sɛ ɛsono sikasɛm mu de.
Asɛm biako a wɔka fa biribiara a ɛwɔ ase ha no ho: nɔma a wɔafa aka wɔ ha no fi nneɛma a wɔyɛ no nkrataa a wɔabobɔ din a ɛfa nneɛma mmusua pɔtee bi ho. Wɔyɛ nsɛntitiriw a mfaso wɔ so, ɛnyɛ nnwuma-mmara nyinaa. Wo controlling reference no yɛ datasheet, cycle-life curve, BMS nhyehyeɛ ne warranty ma model pɔtee a woretɔ no bere nyinaa.
Dɛn Ne Depth of Discharge?
Depth of discharge kyerɛ tumi dodow a wɔayi afi battery a wɔabɔ no charge mu, a wɔda no adi sɛ ɔha biara mu nkyem 100 wɔ reference capacity a wɔaka ho asɛm no mu.
- Wɔabɔ ho ka nyinaa: 0% DoD
- Tumi a wɔde di dwuma no fã: 50% DoD
- Tumi a wotumi nya nyinaa a wɔde di dwuma: 100% DoD
Mfonini abien a ɛwɔ spec krataa so de nsɛmfua koro na edi dwuma nanso ɛsono nea ɛkyerɛ.DoD a ɛsen biarane nsu a emu dɔ sen biara a ade no anaa ne batere a wɔde di dwuma ho nhyehyɛe ma ho kwan a ɛnkanyan ahobammɔ.DoD a wɔkamfo kyerɛyɛ adwumayɛ mfɛnsere a nea ɔyɛ no bu no sɛ ɛyɛ aguadi-a ntease wom a ɛda ahoɔden a wɔde di dwuma, kyinhyia nkwa ne ɛka a wɔbɔ wɔ nea wɔde besi ananmu ntam. Nea edi kan no a wobɛfa no te sɛ nea ɛto so abien no ne mfomso a ne bo yɛ den sen biara wɔ asɛmti yi nyinaa mu.
Rolls kyerɛkyerɛ nsonsonoe no mu pefee. Ɛyɛdrop-wɔ LFP batere dwumadie nwoma mutu fo sɛ fa saa batere ahorow no di sakre so wɔ 0% ne 80% DoD ntam na ama kyinhyia nkwa nna a eye sen biara, bere a BMS no ankasa ntwa kosi sɛ ɛbɛyɛ bɛyɛ 95% DoD. Ahobammɔ anohyeto no te ɔha biara mu nkyem 15 ase wɔ nyansahyɛ no ase, na saa nɔma ahorow no mu biako pɛ na ɛwɔ wo nhyehyɛe nhyehyɛe no mu.
Depth of Discharge vs Tebea a Wɔde Bɔ Sobo
DoD ne state of charge (SoC) kyerɛkyerɛ tebea koro no ara mu fi awiei a ɛne ne ho bɔ abira. Sɛ wɔn baanu nyinaa de reference capacity koro di dwuma a:
DoD=100% − SoC
| Battery tebea | DoD | SoC |
|---|---|---|
| Wɔabɔ ho ka koraa | 0% | 100% |
| Baako-afã nkyem anan mu biako na wɔde di dwuma | 25% | 75% |
| Wɔde fã di dwuma | 50% | 50% |
| Nnanmu anan-anum a wɔde dii dwuma | 80% | 20% |
| Accessible tumi a wɔabrɛ | 100% | 0% |
Nkontaabu no yɛ nea ɛho nhia. Reference capacity no nyɛ saa. SoC a wɔada no adi a ɛyɛ 0% taa kyerɛ "0% wɔ nea BMS wɔ ɔpɛ sɛ ɛde bɛma wo no mu", ɛnyɛ "0% wɔ electrochemical tumi a ɛwɔ nkwammoaa no mu". Lithium nhyehyɛe dodow no ara siw ade a wɔabɔ ho ban a wɔde asie wɔ mfɛnsere no ano biako anaa abien no nyinaa mu, na ɛno nti na batere a ɛkenkan ade hunu da so ara wɔ nkwammoaa a ɛtra hɔ yiye wɔ nea asɛe no so no.
Sɛnea Wobu Depth of Discharge ho akontaa
Sɛ wode amp- nnɔnhwerew di dwuma
DoD (%)=Tumi a wɔtow gu (Ah) ÷ Tumi a wɔakyerɛ (Ah) × 100
Battery a ɛwɔ 100 Ah a ɛma 30 Ah ansa na wɔasan ahyɛ mu ma no wɔ 30% DoD, na ɛma bɛyɛ 70% SoC. Sɛ adesoa current no yɛ nea ntease wom a, discharged capacity yɛ current × bere kɛkɛ: 20 A nnɔnhwerew abien yi 40 Ah, anaa 40% DoD fi 100 Ah battery mu. Sɛ wunnim sɛnea wonyaa Ah akontaabu a ɛwɔ nkyerɛwde no so no wɔ nea edi kan no mu a, yɛn nkyerɛkyerɛmufo no wɔnea Ah kyerɛ wɔ batere sono ka nhyiam ahorow a wɔde kyerɛ sɛnea nneɛma te no ho asɛm.
Fa nea ebefi mu aba no di dwuma sɛ akontaabu gye sɛ battery monitor anaa BMS a wɔahyɛ no den na ɛreyɛ akontaabu no. Tumi ankasa sesa ne ɔhyew, nsuo a ɛfiri mu ba, mfeɛ ne cut-off voltage a wɔde kyerɛkyerɛ "empty" mu.
Sɛ wode kilowatt- nnɔnhwerew di dwuma
DoD (%)=Ahoɔden a wɔayi afiri mu (kWh) ÷ Batere ahoɔden a wɔfrɛ no (kWh) × 100
Battery a wɔfrɛ no 10 kWh a ɛma 8 kWh no adu 80% DoD. Wɔtaa kyerɛ storage systems wɔ ahoɔden mu sen sɛ wɔbɛbɔ ka, enti eyi ne version a wode bedi dwuma ama sizing adwuma; sɛ nsonsonoe a ɛda tumi ne ahoɔden dodow ntam no da so ara yɛ nea emu nna hɔ a, hwɛkW vs kWh kyerɛkyerɛɛ mu.
Wɔdannan formula a wɔde yɛ sizing no
Tumi a wɔhwehwɛ a wɔfrɛ no=Ahoɔden a wɔhwehwɛ a wotumi de di dwuma ÷ DoD a wɔama ho kwan
Wohia 80 kWh a ɛyɛ DC ahoɔden a wotumi de di dwuma wɔ 80% DoD a wɔayɛ ho nhyehyɛe mu? Wohia 100 kWh nominal. Ɛno ne mfiase, ɛnyɛ mmuae - ɔfa a edi hɔ no kyerɛkyerɛ nea ɛda so ara fi soro ba no mu.
Efi Cell Tumi so kosi AC Ahoɔden a Wɔde Ma So
DoD adwene mu naayɛ dodow no ara fi dodow a wɔsusuw wɔ mmeae ahorow wɔ nhyehyɛe no mu a wɔde toto ho. Ahoɔden anohyeto ahorow asia na ɛwɔ hɔ, na adetɔnfo fa nea ɛka wɔn ho asɛm ka:
- Nkwammoaa mu anyinam ahoɔden tumi- nea chemistry no betumi de ama wɔ nsusuwii mu wɔ ne voltage anohyeto ahorow ntam.
- Pack nominal tumi- edin krataa no dodow, mpɛn pii no cell tumi × nhyehyɛe, wɔ nkyerɛkyerɛmu ɔhyew ne C- rate a wɔaka.
- BMS-tumi a wotumi kɔ hɔ- nea aka wɔ BMS no akyi no sie headroom wɔ mfɛnsere no atifi ne ase.
- Tumi a wotumi de di dwuma a ɛfata- ɔfa a warranty no bɔ ho ban ankasa, a ebia ɛyɛ teateaa da so ara.
- Wɔde DC ahoɔden mae- tumi a wotumi nya × DoD a wɔahyehyɛ, a wɔayi ɔhyew ne onyin nkɛntɛnso afi mu.
- Wɔde AC ahoɔden mae- akyi nsakraeɛ adehwere wɔ PCS ne aboafoɔ a wɔde di dwuma.
Nsɛmfua abien a ɛfata sɛ wɔde pintinn wɔ ha.C-boɔ a ɛyɛ denyɛ discharge anaa charge current a wɔda no adi sɛ wɔde toto tumi ho: 0.5C wɔ 100 Ah battery so kyerɛ 50 A, na C-rates a ɛkorɔn taa tew tumi a wubetumi ayi ansa na woabɔ cut-off. NoPCS(tumi nsakrae nhyehyɛe) yɛ bidirectional inverter stage a ɛda DC battery ne AC grid anaa nnesoa - hwɛnea tumi nsakrae nhyehyɛe yɛsɛnea wɔakyerɛ ne dwumadie yie, na hyɛ no nsow sɛ ebia akontabuo a wɔafa aka no yɛ ɔkwan baako-kwan anaa akɔneaba-akwantuo.
Esiane saa layers yi nti, nhyehyɛe abien a ɛwɔ din krataa kWh a ɛyɛ pɛ betumi de AC ahoɔden a ɛsono nea ɛda adi pefee ama. Sɛ wode nsɛm a wɔafa aka toto ho a, si so dua sɛ wɔde ɔhye a ɛkyerɛ no nkyerɛw kWh akontaabu biara. Yɛn nsusuwii a ɛfabattery ahoɔden akorae nhyehyɛe no adwumayɛ ho nsɛnkyerɛnnekɔ metrics a ɛfa ho no mu kɔ akyiri.
Nea Enti a Nsu a Ɛkɔ Mu no Mu Dɔ Ka Kyinhyia Asetra
Kyinhyia a emu dɔ de anyinam ahoɔden ne mfiridwuma mu nhyɛso pii ba sen nea emu nnɔ, enti sɛnea ɛte wɔ ɔkwan a ɛkɔ akyiri so no, sɛ wode tumi no kakraa bi di dwuma da biara a, ɛtɔ wo kyinhyia pii ansa na batere no adu n’asetra tumi a wɔakyerɛkyerɛ mu-awie.
Ansa na wode kyinhyia-asetra ho asɛm biara bɛtoto ho no, hyɛ no nsow sɛ "kyinhyia" wɔ ntease abiɛsa wɔ kyinhyia mu:
- Honam fam charge–discharge adeyɛ- discharge baako ne recharge baako, a emu dɔ biara.
- Kyinhyia mũ a ɛne no sɛ- cumulative throughput yɛ pɛ full rated capacity biako, enti abien 50% discharges bu sɛ biako.
- Manufacturer-kyerɛkyerɛɛ rated cycle mu- biribiara a sɔhwɛ protocol no ka. Sɛ nhwɛsoɔ no, Rolls kyerɛkyerɛ kyinhyia bi mu wɔ ne LFP nkrataa mu sɛ nsuo a ɛfiri mu kɔ 90% DoD, a emu dɔ sene 80% a ɛkamfo kyerɛ sɛ wɔmfa nni dwuma da biara da no.
Kyinhyia dodow a enni ne sɔhwɛ tebea horow no bɛn nea ntease nnim. Abusuabɔ a ɛda bun ne nkwa ntam ne nea enti a degradation models fa DoD sɛ ade a wɔde hyɛ mu tẽẽ: NREL'sSystem Advisor Nhwɛsokyekye ne kyinhyia-degradation table fi capacity fade a wɔsusuu wɔ cycle dodow bi a wɔde ama wɔ average bun a nsuo gu mu, ne NREL'slithium-ion asetra ho nkɔmhyɛ nhwɛso adwumawɔ aguadi graphite/NMC nkwammoaa so kyerɛ sɛnea nea ebefi mu aba no nso gyina ɔhyew a atwa yɛn ho ahyia so denneennen.
Curves ankasa gu ahorow kɛse wɔ chemistry, cell design ne test protocol so.
| Da biara da DoD | Ahoɔden a ɛfa ho wɔ kyinhyia biara mu | Akwankyerɛ a wɔtaa de di dwuma wɔ kyinhyia dodow mu | Nea ɛtaa di gyinaesi no so |
|---|---|---|---|
| Ɛnyɛ den (20–40%) . | Fam | Ɔkorɔn sen biara | Batere no sõ dodo; kapital ho ka na ɛhyɛ so |
| Ɛyɛ nea ɛkɔ fam (50–70%) . | Kwan | Soro | Common balance point ma da biara da sakre so |
| Ɛmu dɔ (80–90%) . | Soro | Deɛ ɛwɔ fam | Battery ketewa, throughput pii wɔ cycle biara mu |
| Full (ɛbɛn nea ɔyɛɛ no anohyeto) . | Ɔkorɔn sen biara | Nea ɛba fam sen biara, na mpɛn pii no ɛwɔ warranty mfɛnsere no akyi | Ntease wom nkutoo ma backup adwuma a ɛntaa nsi |
DoD nyɛ ade biako pɛ a ɛma obi nyin da. Adwumayɛ mu hyew, nsuo a ɛfiri mu ba, berɛ a wɔde si hɔ wɔ SoC a ɛkorɔn anaa ɛba fam paa, charge profile ne kalenda mfeɛ nyinaa boa - na ɔhyeɛ titire tumi bun biribiara a aka. Trojan deɛ nobattery siesie ho akwankyerɛefisɛ kɔbere-acid a nsu ayiri afa mu no ka no denneennen: digrii 10 biara a ɛboro digrii 25 no bɛyɛ sɛ batere nkwa nna so fã. Wɔ lithium nhyehyɛe ahorow ho no, yɛn nsɛm a yɛahyɛ no nsow wɔlithium battery no hyew a ɛkɔ sorokata charge ne discharge windows a ɛho hia kɛse no so.
Sɛnea Battery Type Tena Depth of Discharge a Wɔkamfo kyerɛ
| Battery no su | Adwumayɛ ho nsusuwii titiriw | Da biara da DoD akwankyerɛ (aduru- pɔtee) . | Anohyeto titiriw | Fibea nnyinaso |
|---|---|---|---|---|
| Nsuyiri a ɛyɛ kɔbere-acid | Ɛyɛ nea ɛte nka sɛ nsu a emu dɔ a ɛtwetwe mpɛn pii no; hia sɛ wɔsan de ahoɔden ma ntɛm na edi mũ | Rolls: ɛnboro 50%. Trojan: 20–50% ma nkwa a eye sen biara, tumi 80% . | Sulfation ne nkwa a ɛyɛ tiaa sɛ wogyaw no fi mu a; nsuo a wɔde gugu so na wɔma ɛyɛ pɛ a ɛho hia | Rolls dwumadie ho nwoma; Trojan FAQ ne nkratafa a ɛfa nsiesie ho |
| AGM / Gel (VRLA) a ɛwɔ hɔ no. | Adansi a wɔatoto mu a woyi no yi nsu a wɔde gu mu no fi hɔ, na ɛnyɛ sɛnea ɛte wɔ nsu a wɔde gu mu no ho | Model-a ɛyɛ pɔtee; kenkan kyinhyia-asetra curve no wɔ wo bun a wopɛ sɛ woyɛ no mu | Charge voltage ne temperature compensation ho hia kɛse; pɛyɛ biara nni AES nhwɛso ahorow bi so | Ɔyɛfoɔ datasheet ne cycle-asetena curve ma model pɔtee no |
| Nkwa Po4 (LFP) . | Mfɛnsere a mfaso wɔ so a ɛtrɛw; BMS hyɛ anohyeto ahorow a emu yɛ den no mu den | Rolls drop-wɔ LFP mu: 0–80% DoD ma kyinhyia nkwa nna a eye sen biara, a BMS twa-a ɛbɛn 95% . | Wɔmma kwan mma wɔmfa charge a ɛba fam sen 0℃wɔ model ahorow pii so; reserve no ahintaw wɔ display no ho | Rolls R/S-Series drop-wɔ LFP dwumadie nwoma mu |
| Lithium-ion afoforo (NMC, LTO, ne nea ɛkeka ho) . | Voltage ahorow ahorow, tumi tumi ne onyin suban | Nnɔmba biara nni hɔ a wotumi de kɔ baabi foforo - mfa nhyehyɛe no yɛfo no mfɛnsere nni dwuma | Chemistry din nkutoo nhyɛ nkɔm kakraa bi pɛ | System manufacturer ho nkrataa |
Nsuyiri a ɛyɛ kɔbere-acid
Akontaabu a wɔtaa de di dwuma 50% no nyɛ anansesɛm. NoRolls Battery dwumadie ho nwoma (V7.4) .ka sɛ wɔabɔ wɔn tirim sɛ wɔde batere a emu dɔ-kyinhyia no bɛtow a ɛnyɛ nea ɛboro 50%, na sɛ wɔma sikakorabea no kwan ma ɛkɔ fam a, ɛtew kyinhyia nkwa nna nyinaa so; ɛsan nso de low-voltage disconnect si 1.90–1.95 volts wɔ cell biara mu de hyɛ saa wɔ nneyɛe mu. Trojan deɛ nomfiridwuma ho FAQkamfo kyerɛ sɛ wɔmfa 20–50% a wɔahyɛ sɛ wɔmfa nni dwuma no nkɔ na ama nkwa ne adwumayɛ a eye sen biara, bere a wɔhyɛ no nsow sɛ batere no tumi di kyinhyia kosi 80%. Nhyehyɛe koro no ara a ɛte sɛ LFP asɛm no: tumi akontaabu ne nyansahyɛ akontaabu, na ɛnyɛ nea wotumi sesa.
AGM ne Gel
Wɔn baanu nyinaa yɛ valve-ahyɛde kɔbere-acid. Ahina a wɔatoto mu no yi nsu a wɔde gugu so daa no fi hɔ; ɛmma wontumi nnya abodwokyɛre mma nsu a emu dɔ a anohyeto biara nni ho. Bun a wɔma ho kwan no gyina mprɛte nhyehyɛe, charge profile, ɔhyew ne cycling frequency so, ne nyinaa da adi wɔ ade no kyinhyia-asetra curve mu. Sɛ wode AGM nneɛma mmienu toto ho a, fa curves toto bun a woabɔ wo tirim sɛ wode bedi dwuma ankasa - "deep-cycle capable" wɔ brochure so no kura akontabuo mu nsɛm biara.
AsetraPO4
LFP nokwarem no de mfɛnsere a ɛtrɛw a wotumi de di dwuma sen lead-acid ma, na ne BMS hyɛ voltage ne current anohyeto ahorow ma enti nea ɔde di dwuma no ntumi nsɛe pack no wɔ ɔkwan a ɛnyɛ aniberesɛm so. Nanso "capable of 100% DoD" yɛ ahobammɔ asɛm, ɛnyɛ sikasɛm mu nyansahyɛ. Sɛnea Rolls nhwɛso no kyerɛ no, nea ɔyɛ no betumi ama kwan ma 95% bere a ɔkamfo 80% kyerɛ no. Ansa na wobɛsiesie wo dwumadie anohyetoɔ no, nya DoD a wɔama ho kwan a ɛkyɛn so, DoD a wɔkamfo kyerɛ da biara da, kyinhyia-asetena mu dodoɔwɔ saa DoD no so, sɔhwɛ hyew ne C-rate, awiei-a -nkwa tumi gyinapɛn, ne warranty no ahoɔden-throughput anohyeto - saa ade a etwa to no, kWh nyinaa a warranty no kata so wɔ ne bere mu no, taa yɛ nea ɛhyɛ ankasa sɛnea ɛsɛ sɛ wokɔ mu.
Lithium nnuru afoforo
LFP, NMC ne LTO yɛ soronko wɔ voltage range, tumi tumi ne onyin suban mu, enti generic "lithium battery DoD" nɔma nyɛ portable wɔ wɔn ntam. Yɛn ntotoho a yɛdebattery ahorow ahorow a wɔde sie ahoɔdenkyerɛ baabi a nnuruyɛ biara fata.
Sɛnea Wobɛpaw DoD a Ɛfata
Anamɔn 1: Fi ase fi nhwɛsode no so, na ɛnyɛ nnuruyɛ no so
LFP batere mmienu a ɛfiri wɔn a wɔde ma ahodoɔ hɔ no tumi nya BMS akoraeɛ ahodoɔ, cycle-nkwa curves ne warranty anohyetoɔ. Model number no ne nhwehwɛmu no fã.
Anamɔn 2: Kenkan kyinhyia-asetra kwan no, a n’ase hɔ nsɛm ka ho
Bisa graph no, afei hwɛ sɛ ɛka sɔhwɛ hyew, charge ne discharge rate, end-of-discharge voltage ne end-of-nkwa nkyerɛase. "6,000 cycles" asɛm a wɔasɔ ahwɛ wɔ 0.2C ne 25℃kosi 80% a aka tumi no kyerɛkyerɛ ade soronko bi a efi asɛm koro no ara a wɔasɔ ahwɛ wɔ 1C ne 35℃kosi 60% mu.
Anamɔn 3: Fa DoD ne adwuma kyinhyia hyia
| Abisadeɛ | Mpɛn dodow a wɔde sakre tu kwan | DoD ntease a mfaso wɔ so |
|---|---|---|
| Da biara da owia ankasa-di anaasɛ adesoa a ɛsakra | ~1 kyinhyia/da, 300+ afe biara | Nneɛma a wɔde yɛ adwuma ne ɛka a wɔbɔ wɔ nneɛma a wɔde besi ananmu no na ɛhyɛ so; mfɛnsere a emu nnɔ taa di nkonim wɔ nkwa nna nyinaa mu sikasɛm mu |
| Ɛtɔ mmere bi a grid backup | Nsa kakraa bi na wɔyɛ kyinhyia afe biara | Mpɛn pii no, wogye nsu a ɛkɔ akyiri tom wɔ anohyeto a wɔama ho kwan no mu, efisɛ kyinhyia dodow nyɛ anohyeto a ɛkyekyere |
| Lead-acid nhyehyɛe a wɔyɛ no foforo | Da biara | Di nea ɔyɛɛ no no akwankyerɛ a ɛyɛ 50% no akyi; recharge ntɛm ara wɔ discharge biara akyi |
| LFP nhyehyɛe a wɔakyerɛkyerɛ mu BMS reserve | Da biara kosi mpɛn pii da biara | Design to the recommended DoD, fa BMS a wɔatwa-a no sɛ ahobammɔ nkutoo |
| High-tumi / bere tiaa-bere asɛyɛde | Mpɛn pii, C-rate a ɛkorɔn | Tumi a ɛwɔ hɔ no hwe ase wɔ C-rate a ɛkorɔn; si so dua sɛ DoD rating no di dwuma wɔ wo discharge rate no so |
Anamɔn 4: Size fi adesoa no akyi
Fa adesoa a ɛho hia no si hɔ wɔ kW mu, bere a wɔhwehwɛ sɛ wɔde tu mmirika, na ɛno nti ahoɔden a wotumi de di dwuma wɔ kWh mu. Kyɛ mu denam DoD a wɔama ho kwan no so na woanya tumi a wɔfrɛ no nominal, afei fa margin ka ho ma nsakraeɛ a wɔhwere, aboafoɔ a wɔde di dwuma, ɔhyew ne end-of{2}}nkwa tumi. Sɛ wopaw nominal capacity kan na wonya anidaso sɛ ɛbɛkata adesoa no so ne sɛnea nnwuma ahorow no ba awiei tiawa wɔ afe anan mu.
Anamɔn 5: Bu ɔhyew ne nsu a ɛba no dodow ho akontaa
Ɔhyew a ɛkɔ soro ma nneɛma sɛe ntɛmntɛm; ɔhyew a ɛba fam ma tumi a ɛwɔ hɔ no so tew, na wɔ lithium nneɛma pii so no, esiw charge no ano koraa. C-ɛboɔ a ɛkorɔn tew tumi a ɛwɔ hɔ ansa na wɔatwa-atwa. Hwɛ DoD a wopɛ sɛ woyɛ wɔ tebea horow a nhyehyɛe no behu - yɛn nsɛm a yɛakyerɛw wɔ ho ankasa no asedischarge adwumayɛ a ahoɔden akorae batteryka sɛnea rate ne temperature di nkitaho ho asɛm.
Anamɔn 6: Fa battery, BMS, inverter ne warranty hyehyɛ
Ɛsɛ sɛ baanan no pene so wɔ low-voltage cut-off, charge voltage, mprempren anohyeto, minimum SoC ne reserve nhyehyɛe ho. Asɛm biako fata sɛ yɛka no pefee: sɛ wobrɛ inverter SoC nhyehyɛe a ɛba fam koraa ase a, ɛnsakra battery no electrochemical anohyeto a ahobammɔ wom, na ebetumi ama woakɔ warranty no akyi yiye. Batere yɛfo no anohyeto da so ara yɛ nea wɔde di dwuma.
Nhwɛsoɔ a Wɔayɛ: 100 kWh LFP Nhyehyɛeɛ
Sɛnea ahoɔden ahye asia no te a akontaahyɛde ahorow abata ho ni. Wɔaka nsusuwii ahorow no sɛnea ɛbɛyɛ a wubetumi de w’ankasa de asi ananmu; wɔyɛ mfatoho, na ɛnyɛ nneɛma a wɔyɛ ho nkyerɛkyerɛmu.
| Anamɔn | Nsusuiɛ | Ahoɔden |
|---|---|---|
| Pack nominal tumi | Edin krataa | 100 kWh na ɛyɛ adwuma |
| DoD a wɔahyehyɛ | 80%, sɛnea nea ɔyɛe no kamfo mfɛnsere biara | 80 kWh DC a ɛyɛ den |
| Wɔde sika a wɔde asie ntɛm ara no siw ano | 5% of nominal, enni hɔ mma sakre a wɔde tu kwan daa | 75 kWh DC a ɛyɛ den |
| PCS nsakraeɛ a ɛyera | 97% ɔkwan biako-kwan so nsuo a wɔde gu mu no yɛ adwuma yie | ≈ 72.8 kWh AC na ɛyɛ adwuma |
| Ɔhyew a wɔde di dwuma ne nea wɔde di dwuma | ≈ 3% a ɛwɔ ahoɔden a wɔde gu mu wɔ mfɛnsere a wɔde gu mu no so | ≈ 70.6 kWh AC na ɛyɛ adwuma |
| Awiei-a -asetra tumi gyinapɛn | 80% wɔ mfitiaseɛ tumi wɔ afe 10 mu | ≈ 56.5 kWh AC wɔ nkwa nna a wɔahyɛ no awiei |
Edin krataa a ɛyɛ 100 kWh, nokwaredi 80% DoD, ne bɛyɛ 71 kWh a ɛduru adesoa no ho da a ɛdi kan - a ɛtɔ kɔ bɛyɛ 56 kWh wɔ nkwa a wɔahyɛ no awieeɛ. Biribiara nni ha a ɛyɛ soronko anaasɛ ahintaw; ɛyɛ nea layers no bom yɛ ara kwa. Eyi nso nti na ɛte saaaguadi ne mfiridwuma mu nneɛma a wɔkora so ho adwumaɛsɛ sɛ wɔsɔ hwɛ wɔ AC ahoɔden a wɔde ma wɔ nkwa nna awiei so, na ɛnyɛ sɛnea wɔde din krataa tumi di dwuma.
Depth Of Discharge Nsɛm a Wɔka Kyerɛ
Q: Dɛn na 80% Depth Of Discharge Kyerɛ?
A: Wɔde tumi a wɔatwe adwene asi so no mu 80% adi dwuma na bɛyɛ 20% da so ara wɔ hɔ.
Asɛmmisa: So Nsu a Ɛkɔ Fam a Ɛkorɔn Ye Ye?
A: Ɛma ahoɔden pii wɔ kyinhyia biara mu fi batere ketewaa bi mu, mpɛn pii no ɛma kyinhyia no nkwa nna ho ka. Ɔfã bɛn na edi nkonim no gyina mpɛn dodow a wode sakre tu ne ɛka a wɔbɔ sɛ wode besi ananmu so.
Q: So 100% DoD Sɛe Batere Bi?
A: Egyina baabi a nea ɔyɛe no de nkyerɛkyerɛmu no sii hɔ so. Lithium nhyehyɛe ahorow bi da mfɛnsere a wɔfrɛ no 100% adi bere a ɛkura akorae a wɔabɔ ho ban wɔ n’ase no. Lead-acid nhwɛso pii hu amane kɛse wɔ nea wotumi susuw ho wɔ nsu a ɛtwetwe a edi mũ a wɔsan yɛ no ho. Aguade ho nkrataa no na esi gyinae.
Asɛmmisa: Ɔkwan Bɛn so na DoD Ka Batere Kɛse?
A: Nea ɛne no bɔ abira. DoD a wɔama ho kwan no fã a wɔtew so no bɛyɛ sɛ tumi a wɔfrɛ no a wohia ma ahoɔden koro no ara a wotumi de di dwuma no mmɔho abien, na ɛma sika kɛse a wɔbɔ no kɔ soro nanso ebetumi atrɛw adwumayɛ nkwa nna mu.
Asɛmmisa: So DoD betumi Aboro 100%?
A: Nsusuwii bi betumi akenkan a ɛboro 100% bere a tumi a wɔasɔ ahwɛ boro din krataa no so anaasɛ bere a monitor no nkyerɛkyerɛmu no yɛ soronko wɔ rating nnyinaso no ho. Ɛyɛ susudua anaa nkyerɛkyerɛmu anomaly, ɛnyɛ adwumayɛ tebea a ɛfata, na ɛnyɛ nhyehyɛe botae da.
Q: So DoD Ne Tumi a Wotumi De Di Dwuma Kyerɛ Ade Koro?
A: Dabi DoD yɛ ɔha biara mu nkyem 100 wɔ tumi a wɔde gyina so. Usable capacity yɛ ahoɔden a wobɛtumi atwe ankasa wɔ BMS window, reserves ne system losses a wɔde adi dwuma akyi.
Nneɛma Titiriw a Wɔde Kɔ
Ɛnyɛ den sɛ wobebu nsu a ɛkɔ mu no mu dɔ ho akontaa na ɛnyɛ den sɛ wɔbɛkenkan no yiye. Fomula no gye nkyerɛwde biako; atemmuo no fa datasheet, cycle-life curve a ne sɔhwɛ tebea horow, BMS nhyehyeɛ ne warranty krataa.
Sɛ woresusuw battery nhyehyɛe bi ho a, "dɛn ne DoD a ɛsen biara?" yɛ asɛmmisa a enni nsɛm pii a ɛwɔ hɔ. Bisa mmom sɛ ahoɔden dodow a ɛkɔ adesoa no so ankasa, DoD bɛn ne ɔhyew ne C{1}}rate bɛn ase na wɔsusuw kyinhyia nkwa nna, reserve bɛn na BMS no sie, ne adwumayɛ mfɛnsere bɛn na warranty no ma ho kwan. Saa mmuae anan no kyerɛkyerɛ asetra mu mfaso mu. Ɔha biara mu nkyem biako pɛ a ɛwɔ spec krataa so no nyɛ saa.