Kuyini Ukuvumelana Kwebhethri Le-Solar Lithium?

Ibhethri ye-solar lithiumiyisici esiyinhloko sohlelo lokugcina amandla elanga, ukusebenza kwebhethri ye-lithium kungenye yezinto ezibalulekile zokunquma ukusebenza kwesistimu yokugcina amandla ebhethri.

Ukuthuthukiswa kobuchwepheshe bebhethri ye-lithium yelanga kube ukulawula izindleko, ukuthuthukisa ukuminyana kwamandla kanye nokuminyana kwamandla amabhethri e-lithium, ukuthuthukisa ukusetshenziswa kokuphepha, ukunweba impilo yesevisi nokuthuthukisa ukuhambisana kwephakethe lebhethri, njll. njenge-eksisi eyinhloko, futhi ukuthuthukiswa kwalezi zakhi kusese ibhethri ye-lithium okwamanje ebhekene nenselelo enkulu kakhulu. Lokhu ikakhulukazi ngenxa yeqembu lokusebenza kweseli elilodwa kanye nokusetshenziswa kwendawo yokusebenza (njengokushisa) kukhona umehluko, ukuze ukusebenza kwamabhethri e-lithium elanga ahlale ephansi kuneseli elilodwa elibi kakhulu ephaketheni lebhethri.

Ukungahambisani nokusebenza kweseli eyodwa kanye nemvelo yokusebenza akugcini nje ukunciphisa ukusebenza kwebhethri ye-lithium yelanga, kodwa futhi kuthinta ukunemba kokuqapha kwe-BMS nokuphepha kwephakethe lebhethri. Ngakho-ke yiziphi izizathu zokungavumelani kwebhethri ye-lithium yelanga?

Kuyini I-Lithium Solar Battery Consistency?

Ukungaguquguquki kwephakethe lebhethri yelanga ye-lithium kusho ukuthi amandla kagesi, amandla, ukumelana kwangaphakathi, ukuphila konke, umphumela wezinga lokushisa, izinga lokuzikhipha ngokwawo kanye neminye imingcele ihlala ihambisana kakhulu ngaphandle komehluko omkhulu ngemva kokuba imodeli yokucaciswa efanayo yamaseli angawodwa enze iphakethe lebhethri.

Ukungaguquguquki kwebhethri lelanga le-lithium kubalulekile ukuze kuqinisekiswe ukusebenza okufanayo, ukunciphisa ubungozi kanye nokwandisa impilo yebhethri.

Ukufundwa okuhlobene: yiziphi izingozi ezingalethwa amabhethri e-lithium angahambisani?

Yini Ebangela Ukungaguquguquki Kwamabhethri eSolar Lithium?

Ukungaguquguquki kwephakethe lebhethri ngokuvamile kubangela amabhethri e-lithium elanga enqubweni yebhayisikili, njengokuwohloka komthamo omkhulu, ukuphila okufushane nezinye izinkinga. Kunezizathu eziningi zokungavumelani kwamabhethri e-lithium elanga, ikakhulukazi ekukhiqizeni nasekusetshenzisweni kwenqubo.

1. Umehluko kumapharamitha phakathi kwebhethri elilodwa le-lithium iron phosphate

Umehluko wombuso phakathi kwamabhethri e-lithium iron phosphate monomer ikakhulukazi uhlanganisa umehluko wokuqala phakathi kwamabhethri e-monomer kanye nomehluko wepharamitha okhiqizwa phakathi nenqubo yokusebenzisa. Kunezinhlobonhlobo zezinto ezingalawuleki ohlelweni lokwakhiwa kwebhethri, ukukhiqizwa, ukugcinwa nokusetshenziswa okungathinta ukuvumelana kwebhethri. Ukuthuthukisa ukungaguquguquki kwamaseli ngamanye kuyimfuneko yokuthuthukisa ukusebenza kwamaphakethe ebhethri. Ukusebenzisana kwepharamitha yeseli eyodwa ye-lithium iron phosphate, isimo samanje sepharamitha sithintwa isimo sokuqala kanye nomphumela wokuqongelela kwesikhathi.

Ibhethri ye-lithium iron phosphate, i-voltage kanye nesilinganiso sokuzikhulula

Ukungaguquguquki komthamo webhethri le-lithium iron phosphate kuzokwenza iphekhi yebhethri yokushona kweseli eyodwa ukujula kungahambisani. Amabhethri anamandla amancane nokusebenza okungekuhle azofika ekushajweni okugcwele kusenesikhathi, okubangele ukuthi amabhethri anomthamo omkhulu nokusebenza kahle ahluleke ukufinyelela esimweni sokushajwa esigcwele. Ukungaguquguquki kwebhethri ye-lithium iron phosphate kuzoholela kumaphakethe ebhethri afanayo esitokisini esisodwa esishaja wodwa, ibhethri lamandla kagesi aphezulu lizonikeza ukushajwa kwebhethri kagesi ophansi, okuzosheshisa ukuwohloka kokusebenza kwebhethri, ukulahlekelwa amandla ebhethri lonke. . Izinga elikhulu lokuzikhipha komthamo webhethri, i-lithium iron phosphate battery self-discharge rate izoholela kumehluko esimweni sokushajwa kwebhethri, i-voltage, okuthinta ukusebenza kwephakethe lebhethri.

Ukumelana kwangaphakathi kwebhethri ye-lithium iron phosphate eyodwa

Ohlelweni lochungechunge, umehluko wokumelana kwangaphakathi kwebhethri elilodwa le-lithium iron phosphate uzoholela ekushintshashintsheni komthamo wokushaja webhethri ngalinye, ibhethri elinokumelana okukhulu kwangaphakathi lifinyelela umkhawulo ophezulu wamandla kagesi kusengaphambili, kanti amanye amabhethri angeke ashajwe ngokugcwele. ngalesi sikhathi. Amabhethri anokumelana okuphezulu kwangaphakathi anokulahlekelwa amandla aphezulu futhi akhiqiza ukushisa okuphezulu, futhi umehluko wezinga lokushisa ukhulisa nakakhulu umehluko wokumelana kwangaphakathi, okuholela kumjikelezo ononya.

Isistimu ehambisanayo, umehluko wokumelana wangaphakathi uzoholela ekushintshashintsheni kwebhethri ngayinye yamanje, amandla akhona ebhethri ashintsha ngokushesha, ukuze ukujula kweshaja nokukhipha ibhethri ngalinye kungahambisani, okuholela ekutheni umthamo wangempela wesistimu kunzima ukufinyelela inani lokuklama. Ukusebenza kwebhethri kuhlukile, ukusebenza kwayo ekusetshenzisweni kwenqubo kuzoveza umehluko, futhi ekugcineni kuzothinta impilo yalo lonke iphakethe lebhethri.

2. Izimo zokushaja nokukhipha

Indlela yokushaja ithinta ukusebenza kahle kokushaja kanye nesimo sokushaja se-solar lithium battery pack, ukushaja ngokweqile nokukhipha ngokweqile kuzolimaza ibhethri, futhi iphakethe lebhethri lizobonisa ukungahambisani ngemva kwezikhathi eziningi zokushaja nokukhipha. Njengamanje, kunezindlela ezimbalwa zokushaja zamabhethri e-lithium-ion, kodwa ezivamile ziyizigaba zokushaja okungaguquki kwamanje kanye nokushaja okungaguquki-yamanje-voltage. Ukushaja kwamanje njalo kuyindlela ekahle kakhulu yokushaja okugcwele okuphephile futhi okusebenzayo; ukushaja okungaguquki kwe-voltage yamanje kanye nokuqhubekayo kuhlanganisa ngempumelelo izinzuzo zokushaja okungapheli kanye nokushaja kwamandla kagesi njalo, ukuxazulula indlela yokushaja yamanje evamile kunzima ukushaja ngokugcwele, ukugwema indlela yokushaja i-voltage engaguquki ekushajweni kwesigaba sokuqala samanje inkulu kakhulu ukuthi ibhethri ingabangela umthelela wokusebenza kwebhethri, kulula futhi kulula.

3. Izinga lokushisa lokusebenza

Ukusebenza kwamabhethri e-solar lithium kuzokwehliswa kakhulu ngaphansi kwezinga lokushisa eliphezulu kanye nezinga eliphezulu lokukhipha. Lokhu kungenxa yokuthi ibhethri ye-lithium-ion emazingeni okushisa aphezulu kanye nokusetshenziswa okuphezulu kwamanje, kuzodala izinto ezisebenzayo ze-cathode kanye nokubola kwe-electrolyte, okuyinqubo ye-exothermic, isikhathi esifushane, njengokukhululwa kokushisa kungaholela ebhethri uqobo. izinga lokushisa likhuphuka ngokuqhubekayo, futhi amazinga okushisa aphakeme asheshisa isenzakalo sokubola, ukwakheka kombuthano ononya, ukubola okusheshayo kwebhethri ukuze kuqhubeke ukwehla ekusebenzeni. Ngakho-ke, uma iphekhi yebhethri ingaphathwa kahle, izoletha ukulahleka kokusebenza okungenakuhlehliswa.

Idizayini yebhethri ye-lithium yelanga kanye nokusetshenziswa komehluko kwezemvelo kuzobangela ukuthi indawo yokushisa yeseli elilodwa ingahambisani. Njengoba kuboniswa umthetho ka-Arrhenius, isilinganiso sokuphendula kwe-electrochemical esingaguquki sebhethri sihlobene kakhulu nezinga, nezici ze-electrochemical zebhethri zihlukile kumazinga okushisa ahlukene. Izinga lokushisa lithinta ukusebenza kwesistimu ye-electrochemical yebhethri, ukusebenza kahle kwe-Coulombic, amandla okushaja nokukhipha, amandla okukhiphayo, umthamo, ukwethembeka, nempilo yomjikelezo. Njengamanje, ucwaningo oluyinhloko lwenziwa ukuze kulinganiswe umphumela wokushisa ekungahambisani kwamaphakethe ebhethri.

4. Isekhethi yangaphandle yebhethri

Ukuxhumana

Phakathi kuuhlelo lokugcina amandla okuhweba, amabhethri elanga e-lithium azohlanganiswa ngochungechunge nokuhambisana, ngakho-ke kuzoba nezifunda eziningi zokuxhuma kanye nezici zokulawula phakathi kwamabhethri namamojula. Ngenxa yokusebenza okuhlukile nezinga lokuguga lelungu ngalinye lesakhiwo noma ingxenye, kanye namandla angahambisani asetshenziswa endaweni ngayinye yokuxhuma, amadivayisi ahlukene anemiphumela ehlukile kubhethri, okuholela kusistimu yephakethe yebhethri engahambisani. Ukungahambisani nesilinganiso sokuwohloka kwebhethri kumasekhethi afanayo kungasheshisa ukuwohloka kwesistimu.

I-Impedans piece piece izophinde ibe nomthelela wokungaguquki kwephakethe lebhethri, ukumelana nocezu lokuxhumana akufani, isigxobo esiya egatsheni elilodwa lokumelana nesifunda segatsha sihlukile, kude nesigxobo sebhethri ngenxa yocezu lokuxhuma. isikhathi eside futhi ukumelana kukhulu, okwamanje kuncane, ucezu lokuxhuma luzokwenza iseli elilodwa elixhunywe esigxotsheni kuzoba ngeyokuqala ukufinyelela i-voltage enqanyuliwe, okuholela ekunciphiseni ukusetshenziswa kwamandla, okuthinta ukusebenza kwe-voltage. ibhethri, kanye nokuguga kweseli eyodwa ngaphambi kwesikhathi kuzoholela ekushajweni ngokweqile kwebhethri exhunyiwe, okuholela ekuphepheni nokuvikeleka kwebhethri. Ukuguga kwangaphambi kwesikhathi kweseli eyodwa kuzoholela ekushajweni ngokweqile kwebhethri exhunywe kuyo, okuholela ezingcupheni zokuphepha ezingaba khona.

Njengoba inani lemijikelezo yebhethri likhula, lizokwenza ukuthi ukumelana kwangaphakathi kwe-ohmic kwande, ukuwohloka komthamo, kanye nesilinganiso sokumelana kwangaphakathi kwe-ohmic nenani lokumelana lesiqephu sokuxhuma kuzoshintsha. Ukuqinisekisa ukuphepha kwesistimu, ithonya lokumelana nocezu lokuxhuma kufanele licatshangelwe.

I-BMS Input Circuitry

Isistimu yokuphatha ibhethri (i-BMS) isiqinisekiso sokusebenza okuvamile kwamaphakethe ebhethri, kodwa isekethe yokufaka ye-BMS izophazamisa kabi ukuhambisana kwebhethri. Izindlela zokuqapha amandla kagesi ebhethri zihlanganisa ukunemba kwesihlukanisi se-voltage resistor, isampula ye-chip edidiyelwe, njll. Lezi zindlela azikwazi ukugwema ukuvuza kokuvuza komugqa wesampula ongasenamthwalo ngenxa yokuba khona kwezindlela zokuphikisa kanye nezindlela zebhodi lesekethe, kanye nesistimu yokulawula ibhethri ukuvinjelwa kokufaka kwesampula ye-voltage kuzokwandisa ukungahambisani kwesimo sokushajwa kwebhethri (SOC) futhi kuthinte ukusebenza kwephakethe lebhethri.

5. Iphutha lesilinganiso se-SOC

Ukungaguquguquki kwe-SOC kubangelwa ukungqubuzana komthamo wokuqala weseli elilodwa kanye nokungahambisani nenani lokubola kwamandla okuzisholo weseli elilodwa ngesikhathi sokusebenza. Ngomjikelezo ohambisanayo, umehluko wokumelana kwangaphakathi kweseli elilodwa kuzodala ukusatshalaliswa kwamanje okungalingani, okuzoholela ekungavumelani kwe-SOC. Ama-algorithms e-SOC ahlanganisa indlela yokuhlanganisa yesikhathi se-ampere, indlela kagesi yesekhethi evulekile, indlela yokuhlunga ye-Kalman, indlela yenethiwekhi ye-neural, indlela enengqondo engaqondakali, nendlela yokuhlola yokukhipha, njll. Iphutha lesilinganiso se-SOC libangelwa ukungahambisani komthamo wokuqala weseli eyodwa. kanye nokungaguquguquki kwezinga lokubola komthamo weseli elilodwa ngesikhathi sokusebenza.

Indlela yokuhlanganisa i-ampere-time inokunemba okungcono uma i-SOC yesimo sokushaja sokuqala inembe kakhulu, kodwa ukusebenza kahle kwe-Coulombic kuthinteka kakhulu isimo sokushaja, izinga lokushisa kanye namandla ebhethri, okunzima ukulinganiswa ngokunembile, ngakho-ke. kunzima ukuthi indlela yokuhlanganisa ye-ampere-time ihlangabezane nezidingo zokunemba zokulinganisa isimo sokushaja. Indlela yamandla kagesi wesekethe evulekile Ngemva kwesikhathi eside sokuphumula, amandla kagesi ebhethri evulekile anobudlelwano obuqondile bokusebenza ne-SOC, futhi inani elilinganisiwe le-SOC litholwa ngokukala i-terminal voltage. Indlela ye-voltage ye-open-circuit inenzuzo yokunemba kokulinganisa okuphezulu, kodwa ukungalungi kwesikhathi eside sokuphumula nakho kukhawulela ukusetshenziswa kwayo.

Ungakuthuthukisa Kanjani Ukuvumelana Kwebhethri Le-Lithium Solar?

Thuthukisa ukuvumelana kwamabhethri e-solar lithium ohlelweni lokukhiqiza:

Ngaphambi kokukhiqizwa kwamaphakethe ebhethri e-lithium elanga, kuyadingeka ukuhlunga amabhethri e-lithium iron phosphate ukuze kuqinisekiswe ukuthi amangqamuzana ngamanye kumojula asebenzisa ukucaciswa okufanayo namamodeli, nokuhlola i-voltage, umthamo, ukumelana kwangaphakathi, njll. qinisekisa ukuvumelana kokusebenza kokuqala kwamaphakethe ebhethri e-lithium elanga.

Ukulawula ukusetshenziswa kanye nenqubo yokulungisa

Ukuqapha kwesikhathi sangempela kwebhethri kusetshenziswa i-BMS:Ukuqapha kwesikhathi sangempela kwebhethri phakathi nenqubo yokusebenzisa kungabonwa ngesikhathi sangempela ukuvumelana kwenqubo yokusebenzisa. Zama ukuqinisekisa ukuthi izinga lokushisa elisebenzayo lebhethri ye-lithium yelanga ligcinwa ngaphakathi kwebanga elifanele, kodwa futhi uzame ukuqinisekisa ukuhambisana kwezimo zokushisa phakathi kwamabhethri, ukuze uqinisekise ngokuphumelelayo ukuhambisana kokusebenza phakathi kwamabhethri.

Sebenzisa isu lokulawula eliphusile:nciphisa ukujula kokukhishwa kwebhethri ngangokunokwenzeka lapho amandla okukhiphayo evunyelwe, ku-BSLBATT, amabhethri ethu e-lithium elanga ngokuvamile asethelwa ekujuleni kokukhipha okungengaphezu kuka-90%. Ngesikhathi esifanayo, ukugwema ukushajwa ngokweqile kwebhethri kunganweba impilo yomjikelezo wephakethe lebhethri. Qinisa ukugcinwa kwephakethe lebhethri. Shaja iphakethe lebhethri ngokulungiswa okuncane ngezikhathi ezithile, futhi unake ukuhlanza.

Isiphetho Sokugcina

Izimbangela zokungaguquguquki kwebhethri ikakhulukazi ezicini ezimbili zokukhiqiza nokusebenzisa ibhethri, ukungahambisani kwamaphakethe ebhethri ye-Li-ion kuvame ukubangela ukuthi ibhethri yokugcina amandla ibe nokuwohloka komthamo osheshayo kanye nesikhathi sokuphila esifushane phakathi nenqubo yebhayisikili, ngakho-ke kakhulu kubalulekile ukuqinisekisa ukuhambisana kwamabhethri e-lithium elanga.

Ngokufanayo, kubaluleke kakhulu ukukhetha abakhiqizi bebhethri ye-solar lithium nabahlinzeki,I-BSLBATTizohlola i-voltage, umthamo, ukumelana kwangaphakathi nezinye izici zebhethri ngayinye ye-LiFePO4 ngaphambi kokukhiqizwa ngakunye, futhi igcine ibhethri ye-lithium yelanga ngalinye ngokuhambisana okuphezulu ngokuyilawula ekukhiqizeni. Uma unentshisekelo emikhiqizweni yethu yokugcina amandla, xhumana nathi ukuze uthole intengo ehamba phambili yomthengisi.