Ibintu bigira ingaruka kumashanyarazi ya PACK ya batiri ya lithium-ion

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Batiri ya Litiyumu ion PACK nigicuruzwa cyingenzi gikora ikizamini cyumuriro wamashanyarazi nyuma yo gusuzuma, guterana, guteranya no guteranya selile, ikanagaragaza niba ubushobozi nibitandukaniro byujuje ibisabwa.

Amashanyarazi ya bateri-parallel monomer nuburyo buhoraho hagati yibitekerezo byihariye muri bateri PACK, gusa bifite ubushobozi bwiza, leta yishyuwe, nko kurwanya imbere, kwishyira ukizana birashobora kugerwaho gukina no kurekura, cpacity ya batiri niba guhuza nabi bishobora kugira ingaruka zikomeye. imikorere ya bateri yose, niyo itera kwishyuza cyangwa gusohora ko bitera ibibazo byihishe.Uburyo bwiza bwo guhimba nuburyo bwiza bwo kunoza monomer.

Batiri ya Litiyumu ion igabanywa nubushyuhe bwibidukikije, hejuru cyane cyangwa ubushyuhe buke cyane bizagira ingaruka kubushobozi bwa bateri.Ubuzima bwa cycle ya bateri irashobora kugira ingaruka mugihe bateri ikora ubushyuhe bwinshi mugihe kirekire.Niba ubushyuhe buri hasi cyane, ubushobozi buzagorana gukina.Igipimo cyo gusohora kigaragaza ubushobozi bwa bateri yo kwishyuza no gusohora hejuru.Niba igipimo cyo gusohora ari gito cyane, kwishyuza no gusohora umuvuduko biratinda, bigira ingaruka kumikorere yikizamini.Niba igipimo ari kinini cyane, ubushobozi buzagabanuka bitewe ningaruka ya polarisiyasi ningaruka zumuriro wa bateri, birakenewe rero guhitamo igiciro gikwiye nigipimo cyo gusohora.

1. Guhuza iboneza

Gutunganya neza ntibishobora kunoza gusa imikoreshereze yimikorere ya selile, ariko kandi bigenzura no guhuza imiterere ya selile, niyo shingiro ryo kugera kubushobozi bwiza bwo gusohora no guhagarara kwizuba rya paki ya batiri.Ariko, urwego rwo gukwirakwiza AC impedance ruzarushaho gukomera mugihe ubushobozi buke bwa bateri, buzagabanya imikorere yizunguruka hamwe nubushobozi bwa paki ya batiri.Uburyo bwo kuboneza bateri bushingiye kuri vector iranga bateri irasabwa.Iyi mikorere ya vector irerekana isano iri hagati yo kwishyuza no gusohora amakuru ya voltage ya bateri imwe niy'ibisanzwe.Kwegera kwishyuza-gusohora umurongo wa batiri ni kumurongo usanzwe, niko bisa cyane, kandi niko hafi ya coeffisente ihurira kuri 1. Ubu buryo bushingiye cyane cyane kubufatanye bwa voltage ya monomer, hamwe nibindi bipimo kuri kugera ku bisubizo byiza.Ingorabahizi nubu buryo ni ugutanga ibikoresho bisanzwe bya bateri.Bitewe nimbogamizi zumusaruro, hagomba kubaho itandukaniro hagati ya selile ikorwa muri buri cyiciro, kandi biragoye cyane kubona ibiranga bikwiranye na buri cyiciro.

Isesengura ryinshi ryakoreshejwe mu gusesengura uburyo bwo gusuzuma itandukaniro hagati ya selile imwe.Ubwa mbere, ingingo zingenzi zigira ingaruka kumikorere ya bateri yakuwe muburyo bw'imibare, hanyuma gukuramo imibare byakozwe kugirango hamenyekane isuzuma ryuzuye no kugereranya imikorere ya batiri.Isesengura ryuzuye ryimikorere ya batiri ryahinduwe mubisesengura ryinshi, kandi uburyo bworoshye bwo kugabura neza imikorere ya batiri bwashyizwe imbere.Irasabwa hashingiwe ku guhitamo selile igizwe na sisitemu yuzuye yo gusuzuma imikorere, bizaba icyiciro cya Delphi cyurwego rwimyenda ihanamye hamwe no gupima ibintu, bateri yibice byinshi byerekana imishino ifatika, kandi ikanesha uruhande rumwe rwibipimo nkibipimo ngenderwaho, ibishyira mubikorwa. isuzuma ryimikorere yubwoko bwimbaraga za lithium ion, Impamyabumenyi ihanitse yavuye mubisubizo byatanzwe itanga ishingiro ryizewe ryo gutoranya no kugabura bateri.

Ibyingenzi byingenzi biranga hamwe nuburyo bwitsinda bikurikije amafaranga ya bateri no gusohora umurongo kugirango ugere kumurimo hamwe nitsinda, intambwe ifatika yo kuyishyira mubikorwa ni ugukuramo ingingo yibintu kumurongo, ubanza gukora ibiranga vector, ukurikije buri murongo uri hagati yintera hagati yimiterere ya vector kumurongo wibipimo, muguhitamo algorithms ikwiye kugirango tumenye urutonde rwumurongo, hanyuma urangize bateri yimikorere yitsinda.Ubu buryo busuzuma imikorere itandukanye ya bateri ikora.Ukurikije ibi, ibindi bipimo bikwiye byatoranijwe kugirango bikore iboneza rya batiri, kandi bateri ifite imikorere ihamye irashobora gutondekwa.

2. Uburyo bwo kwishyuza

Sisitemu yo kwishyuza ikwiye igira ingaruka zikomeye kubushobozi bwa bateri.Niba ubujyakuzimu bwimbitse, ubushobozi bwo gusohora buzagabanuka.Niba ubujyakuzimu bwimbitse ari buke, ibintu bikora bya batiri bizagira ingaruka kandi byangiritse bidasubirwaho, bigabanye ubushobozi nubuzima bwa bateri.Kubwibyo rero, igipimo gikwiye cyo kwishyuza, hejuru yumubyigano wo hejuru hamwe na voltage ihoraho yo guhagarika amashanyarazi bigomba gutoranywa kugirango ubushobozi bwumuriro bushoboke kugerwaho, mugihe hagomba gukoreshwa uburyo bwo kwishyuza neza hamwe numutekano no gutekana.Kugeza ubu, ingufu za lithium ion ya batiri ahanini ifata burigihe-burigihe - uburyo bwo kwishyuza burigihe.Iyo usesenguye ibisubizo bihoraho-bigezweho na voltage yumuriro wa sisitemu ya fosifate ya lithium fer na batteri ya ternary munsi yumuriro utandukanye hamwe na voltage zitandukanye, birashobora kugaragara ko:(1) iyo amashanyarazi ya cutoff yamashanyarazi ari mugihe, amashanyarazi yumuriro ariyongera, igipimo gihoraho-kigabanuka, igihe cyo kwishyuza kiragabanuka, ariko gukoresha ingufu biriyongera;.Kugirango umenye ubushobozi bwa bateri, kwishyiriraho amashanyarazi ya batiri ya lithium fer fosifate ntigomba kuba munsi ya 3.4V.Kuringaniza igihe cyo kwishyuza no gutakaza ingufu, hitamo igihe gikwiye cyo kwishyuza nigihe cyo guhagarika.

Ihame rya SOC ya buri monomer igena ahanini ubushobozi bwo gusohora paki ya batiri, kandi kwishyuza kuringaniza bitanga amahirwe yo kumenya guhuza urubuga rwa SOC rwambere rwa buri monomer isohoka, rushobora kuzamura ubushobozi bwo gusohora no gukora neza (ubushobozi bwo gusohora / ubushobozi bwo gusohora ).Uburyo bwo kuringaniza muburyo bwo kwishyuza bivuga kuringaniza ingufu za batiri ya lithium ion mugikorwa cyo kwishyuza.Mubisanzwe bitangira kuringaniza iyo voltage yumupaki wa batiri igeze cyangwa iri hejuru yumuriro wa voltage, kandi ikarinda kwishyuza mukugabanya amashanyarazi.

Ukurikije leta zitandukanye za selile zitandukanye mumapaki ya bateri, hashyizweho ingamba zo kugenzura uburyo bwo kwishyuza bwihuse kugirango habeho kwishyurwa byihuse bya batiri no gukuraho ingaruka za selile zidahuye kumibereho yumuzingi wibikoresho bya batiri muguhuza neza umuriro. ikigezweho cya selile kugiti cye binyuze muburyo buringaniye bwo kugenzura ibintu bya bateri.By'umwihariko, muri rusange ingufu za batiri ya lithium ion zirashobora kongerwaho kuri bateri kugiti cye muguhindura ibimenyetso, cyangwa ingufu za bateri kugiti cye zirashobora guhinduka mubipaki rusange.Mugihe cyo kwishyuza bateri, module iringaniza igenzura voltage ya buri bateri.Iyo voltage igeze ku gaciro runaka, kuringaniza module itangira gukora.Umuyoboro wamashanyarazi muri bateri imwe ntushobora kugabanya ingufu zumuriro, kandi ingufu zigasubizwa muri bisi zishakisha binyuze muri module kugirango ihindurwe, kugirango ugere ku ntego yo kuringaniza.

Abantu bamwe bashyira imbere igisubizo cyo kwishyuza ibintu bitandukanye.Igitekerezo cyo kuringaniza ubu buryo nuko ingufu ziyongera gusa zitangwa muri selile imwe ifite ingufu nke, bikabuza inzira yo gukuramo ingufu za selile imwe nimbaraga nyinshi, byoroshya cyane topologiya yumuzunguruko.Nukuvuga ko ibiciro bitandukanye byo kwishyuza bikoreshwa mugutwara bateri kugiti cye hamwe ningufu zitandukanye kugirango bigerweho neza.

3. Igipimo cyo gusohora

Igipimo cyo gusohora ni indangagaciro yingirakamaro ya bateri ya lithium ion.Igipimo kinini cyo gusohora cya batiri ni ikizamini cyibikoresho byiza bya electrode na electrolyte.Kubijyanye na fosifate ya lithium, ifite imiterere ihamye, umutwaro muto mugihe cyo kwishyuza no gusohora, kandi ifite imiterere yibanze yo gusohora kwinshi, ariko ikintu kitameze neza ni imikorere mibi ya fosifate ya lithium.Ikwirakwizwa rya lithium ion muri electrolyte ni ikintu cyingenzi kigira ingaruka ku gipimo cyo gusohora kwa batiri, kandi ikwirakwizwa rya ion muri batiri rifitanye isano rya bugufi n'imiterere hamwe na electrolyte ya batiri.

Kubwibyo, ibipimo bitandukanye byo gusohora biganisha kumwanya wo gusohora no gusohora amashanyarazi ya bateri, biganisha kubushobozi butandukanye bwo gusohora, cyane cyane kuri bateri zibangikanye.Kubwibyo, igipimo gikwiye cyo gusohoka kigomba gutoranywa.Ubushobozi buboneka bwa bateri buragabanuka hamwe no kwiyongera kwamashanyarazi.

Jiang Cuina nibindi byo kwiga igipimo cyo gusohora ibyuma bya fosifate ya lithium-ion ya bateri monomer irashobora gusohora ubushobozi, ingaruka zubwoko bumwe bwambere bwo guhuza neza bateri ya monomer iri muri 1 c yumuriro kugeza kuri 3.8 V, hanyuma bikurikiranye na 0.1, 0.2.2 % yubushobozi bwa C / 3 bwarekuwe, ningufu zarekuwe ni 97.2% na 94.3% byingufu za C / 3 zasohotse.Birashobora kugaragara ko hamwe no kwiyongera kwimyuka isohoka, ubushobozi bwarekuwe nimbaraga zarekuwe za batiri ya lithium ion igabanuka cyane.

Mu gusohora bateri ya lithium ion, muri rusange hatoranijwe 1C yigihugu, kandi ibyuka bisohoka mubisanzwe bigarukira kuri 2 ~ 3C.Iyo usohokanye numuyoboro mwinshi, hazabaho ubushyuhe bwinshi no gutakaza ingufu.Noneho rero, ikurikirane ubushyuhe bwimigozi ya bateri mugihe nyacyo kugirango wirinde kwangirika kwa bateri no kugabanya igihe cya bateri.

4. Imiterere yubushyuhe

Ubushyuhe bufite ingaruka zikomeye kubikorwa bya electrode nibikorwa bya electrolyte muri bateri.Ubushobozi bwa bateri bugira ingaruka cyane kubushyuhe bwo hejuru cyangwa buke.

Ku bushyuhe buke, ibikorwa bya bateri biragabanuka cyane, ubushobozi bwo gushira no kurekura lithium buragabanuka, kurwanya imbere kwa bateri na voltage ya polarisiyasi byiyongera, ubushobozi nyabwo burahari buragabanuka, ubushobozi bwo gusohora bateri buragabanuka, urubuga rwo gusohora ruri hasi, bateri iroroshye kugera kumashanyarazi asohoka, ibyo bikaba bigaragazwa nubushobozi bwa bateri bwagabanutse, gukoresha ingufu za batiri bigabanuka.

Mugihe ubushyuhe buzamutse, ioni ya lithium irasohoka igashyirwa hagati yinkingi nziza kandi mbi igakora, bityo imbere ya bateri ikagabanuka kandi igihe cyo gufata kikaba kirekire, ibyo bikaba byongera umuvuduko wa elegitoronike mukuzunguruka hanze kandi bigatuma ubushobozi bukora neza.Ariko, niba bateri ikora mubushyuhe bwo hejuru mugihe kirekire, ituze ryimiterere ya lattice nziza rizarushaho kuba bibi, umutekano wa bateri uzagabanuka, kandi ubuzima bwa bateri buzagabanuka cyane.

Zhe Li n'abandi.yize ku bushyuhe bwubushyuhe ku bushobozi bwo gusohora bwa bateri, kandi yandika igipimo cyubushobozi bwo gusohora bwa bateri nubushobozi busanzwe bwo gusohora (1C isohoka kuri 25 ℃) mubushyuhe butandukanye.Guhuza ubushobozi bwa bateri guhinduka hamwe nubushyuhe, dushobora kubona: aho: C nubushobozi bwa bateri;T ni ubushyuhe;R2 ni coeffisente ijyanye no guhuza.Ibisubizo byubushakashatsi byerekana ko ubushobozi bwa bateri bwangirika vuba kubushyuhe buke, ariko bwiyongera hamwe nubushyuhe bwubushyuhe bwicyumba.Ubushobozi bwa bateri kuri -40 ℃ ni kimwe cya gatatu cyagaciro kizina, mugihe kuri 0 ℃ kugeza kuri 60 ℃, ubushobozi bwa batiri buva kuri 80% byubushobozi bwizina bugera ku 100%.

Isesengura ryerekana ko igipimo cyimpinduka zo kurwanya ohmic kurugero rwo hejuru kirenze icy'ubushyuhe bwo hejuru, ibyo bikaba byerekana ko ubushyuhe buke bugira ingaruka zikomeye kumikorere ya bateri, bityo bikagira ingaruka kuri bateri irashobora kurekurwa.Hamwe n'ubwiyongere bwubushyuhe, kurwanya ohmic hamwe na polarisiyasi yo kwishyuza no gusohora bigabanuka.Nyamara, ku bushyuhe bwo hejuru, uburinganire bwimiti hamwe nubutunzi bwibintu muri bateri bizasenywa, bikavamo ingaruka zishobora kubaho, bizagira ingaruka kubushobozi no kurwanya imbere muri bateri, bigatuma ubuzima bwikigihe bugabanuka ndetse bikanagabanya umutekano.

Kubwibyo, ubushyuhe bwo hejuru hamwe nubushyuhe buke bizagira ingaruka kumikorere nubuzima bwa batiri ya fosifate ya lithium.Mubikorwa nyirizina byo gukora, uburyo bushya nko gucunga ubushyuhe bwa batiri bugomba gukoreshwa kugirango barebe ko bateri ikora mubihe byubushyuhe bukwiye.Icyumba gihoraho cyo gupima ubushyuhe bwa 25 ℃ kirashobora gushirwaho muri bateri PACK ihuza.

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Igihe cyo kohereza: Gashyantare-21-2022