Indlela Yokubala I-BMS Yamanje Edingekayo Yebhethri Lokugcina Amandla Lasekhaya

Isingeniso

Ukukhetha isilinganiso samanje sesistimu yokuphatha ibhethri (i-BMS) sebhethri lokugcina amandla ekhaya akuyona nje indaba yokufanisa i-BMS nomthamo webhethri kuma-amp-hours (Ah). Indawo yokuqala ewusizo kakhulu ugesi ophezulu okumele iphakethe lebhethri liwulethe noma liwamukele ngesikhathi sokusebenza okuvamile, kufaka phakathi umphumela wamandla e-inverter, i-voltage yebhethri, kanye nokusebenza kahle kokuguqulwa.

Isibonelo, ikhasimende elinomshini wokuguqula i-kilowatt (kW) ongu-5 lingacabanga ukuthi i-100 ampere (A) BMS yanele ibhethri lesigaba sama-volt angu-48. Lokho kucabanga kungase kube yiphutha uma i-voltage yebhethri iwela ngaphansi komthwalo noma uma umshini wokuguqula i-inverter usebenza eduze komkhiqizo wayo olinganiselwe isikhathi eside.

Lo mhlahlandlela uchaza indlela yokulinganisa ugesi okhishwa ohlangothini lwebhethri, indlela yokuhlola ugesi oshaja ngokwahlukana, kanye nendlela yokuqhathanisa umphumela nezilinganiso zamandla eziqhubekayo zamamodeli e-DALY's 4th Generation LK kanye ne-LM home energy storage BMS.

1. Qala nge-Battery-Side Current, hhayi i-Ah Rating kuphela

Umthamo webhethri, olinganiswa ngama-amp-hours (Ah), uchaza ukuthi ibhethri lingagcina ishaja engakanani ngaphansi kwezimo ezithile. Akukutsheli, ngokwako, ukuthi ibhethri kumele lilethe ugesi ongakanani ku-inverter.

Iphakethe lebhethri elingu-100 Ah lingasetshenziswa ngamazinga ahlukene wamandla e-inverter kanye namaphrofayili okusebenza. Ngakho-ke, amandla e-BMS adingekayo ancike ekudingweni kwamandla kwesistimu kanye ne-voltage yokusebenza yebhethri, kanye nemikhawulo yamaseli kanye nalo lonke uhlelo lukagesi.

Ukuze uthole i-inverter enikeza amandla ashintshanayo (AC) avela ebhethrini, linganisa amandla aqondile (DC) avela ebhethrini usebenzisa:

• I_DC= umkhawulo wamandla we-DC olinganisiwe othathwe ebhethrini, ngama-ampere (A)
• P_AC= amandla okukhipha i-AC ye-inverter, ngama-watts (W)
• V_ibhethri= i-voltage yebhethri esimweni sokusebenza esihlolwayo, ngama-volt (V)
• η = ukusebenza kahle kokuguqulwa kwe-inverter okuvezwe njengedesimali (isibonelo, 90% = 0.90)

Lokhu kuyisilinganiso sendlela yokukhipha. Sebenzisa imininingwane yomkhiqizi we-inverter yamandla okukhipha alinganisiwe, ukusebenza kahle, kanye ne-voltage yebhethri esebenza kancane noma kuphi lapho itholakala khona. Ukubala kusetshenziswa i-voltage yebhethri ejwayelekile kuphela kunganciphisa ugesi lapho i-voltage yebhethri iphansi.

2. Isibonelo Esisebenzayo: I-Inverter engu-5 kW ebhethrini elingu-48 V-Class

Isibonelo esilandelayo siwumfanekiso, hhayi incazelo yebhethri-voltage yendawo yonke. Ake sithi i-inverter kumele inikeze ama-watts angu-5,000 (W) AC, i-voltage yebhethri endaweni yokusebenza ingu-44 volts (V), futhi ukusebenza kahle kwe-inverter kuleyo ndawo yokusebenza kucatshangwa ukuthi kungu-90%. Lawa manani amabili okusebenza ayizibonelo zokucatshangelwa, hhayi imininingwane yomkhiqizo we-DALY.

Umklamo wokugcina kumele futhi uhlole imikhawulo yangempela yokufaka ye-DC ye-inverter, ugesi okhishwa njalo ovunyelwe ngamaseli ebhethri, izilinganiso zezintambo nezixhumi, ama-fuse noma okunye ukuvikelwa kogesi odlulayo, izimo zokushisa, kanye nanoma yisiphi isidingo sokukhuphuka.

3. Qhathanisa Umphumela Nesilinganiso Samanje Esiqhubekayo se-BMS

Ngemva kokulinganisa ugesi ohambisana nebhethri odingekayo, qhathanisa nesilinganiso sogesi oqhubekayo/wokukhipha ugesi esishicilelwe semodeli ye-BMS kanye nokucushwa okucatshangelwayo.

Lezi yizinketho zamanje eziqhubekayo ze-LK kanye ne-LM ezishicilelwe ezisetshenziswe kulesi sihloko. Ungaqageli isilinganiso esijwayelekile esingafakwanga ohlwini noma ucabange ukuthi ukwenza ngokwezifiso kuyatholakala ngaphandle kokuqinisekiswa okubhaliwe kokucushwa okuceliwe.

Uma isidingo esiqhubekayo esibaliwe singaphezu kuka-200 A, ungacabangi ukuthi ukuxhuma amayunithi amaningi e-BMS ngesikhathi esifanayo kudala ngokuzenzakalelayo ikhambi elifanele lamandla aphezulu. Ukwakheka kwebhethri okuphelele, ukwabelana kwamanje, isu lokuvikela, kanye nokucushwa okuvunyiwe kumele kubuyekezwe yithimba lobunjiniyela.

4. Hlola Ukushaja Kwamanje Ngokwehlukana

Ugesi wokukhipha ugesi ungohlangothi olulodwa kuphela lokukhetha. I-BMS kumele futhi ifanele ugesi wokushaja ophezulu kakhulu ibhethri elingawuthola ku-inverter/ishaja, ishaja yelanga, noma omunye umthombo wokushaja.

Thola amandla okushaja ibhethri aphezulu kakhulu kusuka kudokhumenti yeshaja noma ye-inverter bese uyiqhathanisa nencazelo yamandla okushaja e-BMS kanye namandla okushaja avunyelwe ngumkhiqizi weseli. Ungacabangi ukuthi amandla okushaja alingana namandla okukhipha.

Kuhlelo olunemithombo yokushaja engaphezu kweyodwa, sungula inani eliphezulu lokushaja ngesikhathi esisodwa ngaphansi kwezimo zokusebenza ezihlosiwe. Ukwakheka kwebhethri kanye nezilawuli zokushaja kumele kucatshangelwe ndawonye.

5. Ungadidanisi i-Continuous Current ne-Peak noma i-Surge Current

Eminye imithwalo idonsa ukwanda kwesikhathi esifushane lapho iqala. Izibonelo zingafaka phakathi ama-motor, amaphampu, ama-compressor, kanye neminye imishini enesidingo esikhulu sokuqalisa. Ngakho-ke uhlelo lungase lubhekane nomthamo wamandla ophakeme ngaphezu komthamo walo ojwayelekile wokusebenza.

Ngaphambi kokukhetha i-BMS, thola kokubili ugesi oqhubekayo kanye nogesi ophakeme, okuhlanganisa ukuthi ugesi ophakeme uhlala isikhathi esingakanani nokuthi kwenzeka kangaki. Bese uhlola imibhalo eqondile ye-BMS ukuze uthole umkhawulo ofanele wamandla okuphakama, ubude, kanye nokuziphatha kokuvikela. Isilinganiso samandla okuphakama akumelwe siphathwe njengesilinganiso samandla okuphakama, futhi isibalo samandla okuphakama akumelwe siphathwe njengesilinganiso esiqhubekayo.

6. Hlola Uhlelo Lwebhethri Lonke, Hhayi i-BMS Kuphela

Isilinganiso se-BMS asinqumi ngokuzimela amandla kagesi aphephile ephakethe lebhethri eliphelele. Umkhawulo wangempela wesistimu ungase ube phansi ngenxa yamaseli, amabha amabhasi, izintambo, izixhumi, amafusi, ama-terminal, umklamo wokushisa, noma imikhawulo ye-inverter.

• Amaseli ebhethri: qinisekisa ukushaja okuqhubekayo komkhiqizi weseli kanye nemikhawulo yamanje yokukhipha.
• I-voltage yebhethri: sebenzisa i-voltage yokusebenza ephansi kakhulu ukuze ulinganisele i-discharge-current, hhayi i-voltage ejwayelekile kuphela.
• Amakhebula nokuxhumeka: kuqinisekisa izilinganiso zamanje, izimo zokufakwa, kanye nekhwalithi yokuxhumeka.
• Ukuvikelwa kokushisa ngokweqile: hlola ukukhetha kwefuse noma i-breaker kanye nokuxhumana nomklamo wesistimu.
• Izinga lokushisa: cabanga ngebhethri nendawo yokusebenza ye-BMS kanye nanoma yimiphi imikhawulo yamandla ahlobene nokushisa.
• I-Inverter: qinisekisa amandla aqhubekayo, amandla okunyuka, ububanzi bamandla kagesi e-DC, kanye nomthamo wamanje wokushaja ibhethri ophezulu.

Ukukhetha okulungile yilokho okwanelisa izidingo nemikhawulo yesistimu ephelele. Ukukhetha i-BMS enomshini we-nameplate ophezulu akusivimbeli amaseli amancane, izintambo, noma amadivayisi okuvikela.

7. Indlela Yokusebenzisa Lokhu Kubalwa Uma Uqhathanisa i-DALY LK kanye ne-LM

Amamodeli e-DALY esizukulwane sesi-4 se-LK kanye ne-LM home energy storage BMS abhalwe ohlwini lwezilungiselelo ze-8S kanye ne-16S (inani lamaseli axhunyiwe ochungechungeni) kanye namakhemikhali ebhethri e-Li-ion (lithium-ion) kanye ne-LiFePO4 (lithium iron phosphate) kulwazi lomkhiqizo lwe-DALY. Izilinganiso zamanje zokushaja/ukukhipha okuqhubekayo ezishicilelwe ziyi-100 A ye-LK kanye ne-150 A noma i-200 A ye-LM.

Isilinganiso samanje siyingxenye eyodwa kuphela yokukhetha. Iphrojekthi kufanele futhi iqinisekise ukucushwa kochungechunge lwebhethri okuqondile, ikhemistri, imodeli ye-inverter, iphrothokholi yokuxhumana, uhlelo lwe-parallel-pack, kanye nemisebenzi edingekayo yokuzikhethela. I-CAN (Inethiwekhi Yendawo Yokulawula) kanye ne-RS-485 (izinga lokuxhumana elilandelanayo) kuyizinketho zokuxhumana epulatifomu; ukuba khona kwe-interface akubonisi ukuhambisana nayo yonke imodeli ye-inverter.

Kumasistimu ebhethri ahambisanayo, ungaphindaphindi isilinganiso esisodwa se-BMS ngenani lamaphakethe bese ucabanga ukuthi umphumela uwumshini wamanje wesistimu ovunyiwe. Ukucushwa okuhambisanayo, ukusatshalaliswa kwamanje, ukuxhumana phakathi kwamaphakethe, kanye nemikhawulo yokuvikela kudingeka kubuyekezwe ukwakheka kwangempela.

8. Ulwazi Okufanele Ululungiselele Ngaphambi Kokucela Izincomo Ze-BMS

Uphenyo lobuchwepheshe oluwusizo kufanele luhlanganise ulwazi olulandelayo:

1. I-chemistry yebhethri (isibonelo, i-LiFePO4 noma enye i-chemistry ye-Li-ion).
2. Inani lamaseli alandelanayo kanye nobubanzi bebhethri obujwayelekile kanye nobubanzi bamandla okusebenza.
3. Umthamo webhethri (Ah) kanye nemodeli yeseli noma ishidi ledatha leseli, uma litholakala.
4. Umkhiqizi we-inverter kanye nomodeli oqondile.
5. Amandla okukhipha okuqhubekayo kwe-inverter kanye namandla okukhuphuka, okuhlanganisa nobude bokukhuphuka.
6. Ukukhishwa kwebhethri okuqhubekayo okudingekayo okuphezulu kakhulu.
7. Imithombo yokushaja ibhethri ephezulu kakhulu kanye nokushaja.
8. Ugesi ophezulu odingekayo kanye nobude bawo.
9. Isixhumi esibonakalayo sokuxhumana kanye nephrothokholi edingekayo (uma kudingeka ukuxhumana kwe-inverter).
10. Inani lamaphakethe ebhethri ahlelelwe ukusebenza ngasikhathi sinye.
11. Ububanzi bokushisa bokufakwa kanye nanoma yimiphi imisebenzi ongayikhetha edingekayo.

Isiphetho

Ukuze ukhethe isilinganiso samandla e-BMS sebhethri lokugcina amandla ekhaya, qala ngesidingo samandla se-inverter bese ubala amandla aseceleni kwebhethri ku-voltage yebhethri efanele kanye nokusebenza kahle kwe-inverter. Bese uhlola amandla okushaja, isidingo esiphezulu, imikhawulo yamaseli, izintambo, amadivayisi okuvikela, izinga lokushisa, kanye nokucushwa kwe-BMS okuqondile.

Kuluhlu lokugcina amandla ekhaya lwesizukulwane sesi-4 se-DALY, inketho ye-LK eshicilelwe ilinganiswe ku-100 A okuqhubekayo, kuyilapho izinketho ze-LM zilinganiswe ku-150 A noma ku-200 A okuqhubekayo. Lezi zilinganiso zinikeza abantu abazohlolwa; ukukhetha okulungile kuncike ezidingweni eziqinisekisiwe kanye nemikhawulo yesistimu yebhethri ephelele.

Cela Isibuyekezo Sokukhethwa Kwe-BMS Yobuchwepheshe

Uma uthuthukisa ibhethri lokugcina amandla ekhaya, yabelana ngekhemikhali yebhethri lakho, inani lochungechunge, ububanzi bamandla kagesi, imodeli ye-inverter, izidingo zamandla kagesi eziqhubekayo neziphezulu, amandla okushaja, kanye nokucushwa kwe-parallel-pack okuhleliwe ne-DALY. Ithimba lobuchwepheshe lingabuyekeza ulwazi futhi liqinisekise ukuthi yikuphi ukucushwa kwe-LK/LM, uma kukhona, okufanele iphrojekthi.