TianJinlishen, Guoxuan Hi-Tech nezvimwe zvikwata zvakawana kutsvagisa nekuvandudzwa kwe300 Wh/kg mabhatiri emagetsi. Pamusoro pezvo, kuchine nhamba huru yemayuniti ari kuita zvinoenderana nekusimudzira uye basa rekutsvagisa.

Kuumbwa kwemabhatiri e-flexible packaging lithium-ion kunowanzobatanidza maelectrode akanaka, magetsi asina kunaka, separators, electrolytes, uye zvimwe zvinodiwa zvekubatsira, zvakadai sematepi, matepi, uye mapurasitiki ealuminium. Maererano nezvinodiwa zvehurukuro, munyori wepepa rino anoparadzanisa zvinhu zviri munyoro-pack lithium-ion bhatiri muzvikamu zviviri: kusanganiswa kwepole piece unit uye iyo isiri-simba-inopa zvinhu. The pole piece unit inoreva electrode yakanaka plus negative electrode, uye ese maelectrodes akanaka uye The negative electrode inogona kutorwa semusanganiswa we pole piece units inoumbwa neakawanda pole piece units; zvisizvo zvinopa simba zvinhu zvinoreva zvimwe zvinhu zvese kunze kwekusanganiswa kwepango piece units, senge diaphragms, electrolytes, pole lugs, aruminiyamu mapurasitiki, ekudzivirira matepi uye kupera. tepi etc. Kune yakajairika LiMO 2 (M = Co, Ni uye Ni-Co-Mn, etc.)/carbon system Li-ion mabhatiri, kusanganiswa kwepole piece units inosarudza kugona uye simba rebhatiri.

Parizvino, kuti uwane chinangwa che300Wh/kg yebhatiri misa yakananga simba, nzira huru dzinosanganisira:

(1) Sarudza yakakwira-capacity material system, iyo yakanaka electrode inogadzirwa nepamusoro nickel ternary, uye iyo yakaipa electrode inogadzirwa nesilicon carbon;

(2) Gadzira yakakwira-voltage electrolyte kuti uvandudze chaji yekucheka-kubvisa voltage;

(3) Kugadzirisa kuumbwa kwezvakanaka uye zvisina kunaka electrode slurry uye kuwedzera chikamu chezvinhu zvinoshanda mu electrode;

(4) Shandisa foil yemhangura yakaonda uye aluminium foil kuderedza chikamu chevanotora ikozvino;

(5) Wedzera huwandu hwekuputira hwemagetsi akanaka uye asina kunaka, uye kuwedzera chikamu chezvinhu zvinoshanda muma electrodes;

(6) Kudzora huwandu hwe electrolyte, kuderedza huwandu hwe electrolyte uye kuwedzera chaiyo simba re lithium-ion mabhatiri;

(7) Gadzirisa chimiro chebhatiri uye uderedze chikamu chematabo uye zvekurongedza zvinhu mubhatiri.

Pakati pemabhatiri matatu emhando yecylindrical, square hard shell uye soft-pack laminated sheet, iyo nyoro-pack bhatiri ine hunhu hwekuchinjika dhizaini, huremu huremu, kuderera kwemukati kuramba, zvisiri nyore kuputika, uye akawanda mavhiri, uye chaiyo simba. kushanda kwebhatiri zvakare kwakatanhamara. Naizvozvo, iyo laminated soft-pack simba lithium-ion bhatiri inyaya inopisa yekutsvagisa parizvino. Mumuenzaniso wekugadzira dhizaini yelaminated soft-pack simba lithium-ion bhatiri, iwo makuru akasiyana anogona kukamurwa kuita zvinhu zvitanhatu zvinotevera. Iwo matatu ekutanga anogona kutariswa kuti akatemerwa nechiyero cheiyo electrochemical system uye dhizaini mitemo, uye iyo yekupedzisira mitatu ndiyo inowanzo dhizaini yemuenzaniso. zvakasiyana-siyana zvekufarira.

(1) Zvakanaka uye zvisina kunaka electrode zvinhu uye maitiro;

(2) The compaction density yezvakanaka uye zvisina kunaka electrodes;

(3) Chiyero chemaitiro asina kunaka e electrode (N) kusvika kune yakanaka electrode simba (P) (N / P);

(4) Huwandu hwemapango piece unit (yakaenzana nenhamba yezvakanaka zvidimbu);

(5) Positive electrode coating amount (pachikonzero cheN / P kutsunga, tanga waona iyo yakanaka electrode coating chiyero, uye wozoona iyo yakaipa electrode coating chiyero);

(6) Iyo imwe-yakatarisana nzvimbo yeimwe chete yakanaka electrode (inotemerwa nehurefu uye hupamhi hweiyo yakanaka electrode, kana kureba nehupamhi hweiyo yakanaka electrode yakatemwa, saizi yeiyo negative electrode inotarwawo, uye hukuru hwesero hunogona kutsanangurwa).

Chekutanga, maererano nezvinyorwa [1], pesvedzero yehuwandu hwemapole piece units, huwandu hweyakanaka electrode coating uye imwe-side nharaunda yechikamu chimwe chechakanaka electrode pane chaiyo simba uye simba density ye bhatiri inokurukurwa. Iyo chaiyo simba (ES) yebhatiri inogona kuratidzwa ne equation (1).

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Mufomula (1): x inhamba yemagetsi emagetsi ari mubhatiri; y ndiyo chiyero chekuputira cheiyo yakanaka electrode, kg/m2; z inzvimbo imwe-yakatarisana yeimwe chete yakanaka electrode, m2; xN*, y > 0, z > 0; e(y, z) isimba rinogona kupihwa ne pole piece unit, Wh, fomula yekuverenga inoratidzwa mufomula (2).

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Mune formula (2): DAV ndiyo avhareji yekuburitsa voltage, V; PC ireshiyo yehuremu hweiyo positive electrode inoshanda zvinhu kusvika kune yakazara misa yeyakanaka electrode active material plus conductive agent uye binder,%; SCC ndiyo chaiyo kugona kweiyo yakanaka electrode inoshanda zvinhu, Ah / kg; m(y, z) uremu hwepali piece unit, kg, uye formula yekuverenga inoratidzwa mufomula (3).

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Muformula (3): KCT ndiyo reshiyo yenzvimbo yese ye monolithic positive electrode (huwandu hwenzvimbo yekuputira uye tebhu foil nzvimbo) kune imwechete-sided nzvimbo ye monolithic positive electrode, uye iri mukuru kupfuura 1; Tal ndiko ukobvu hwealuminium anounganidza ikozvino, m; ρAl ndiyo density yearuminiyamu inounganidza ikozvino, kg/m3; KA ireshiyo yenzvimbo yese yega yega yega electrode kune imwechete-sided nharaunda yeimwe chete yakanaka electrode, uye yakakura kupfuura 1; TCu ndiko ukobvu hwemhangura ikozvino muunganidzi, m; ρCu ndiye muunganidzi wemhangura. Density, kg/m3; N/P ireshiyo yekusagona kwe electrode kune yakanaka electrode kugona; PA ireshiyo ye negative electrode active material mass kusvika kuhuwandu hwakazara hwe negative electrode active material plus conductive agent uye binder,%; SCA ndiyo reshiyo resiyo electrode active material Capacity, Ah/kg. M(x, y, z) uremu hwechinhu chisingapi simba, kg, fomula yekuverenga inoratidzwa mufomula (4)

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Mune formula (4): kAP ireshiyo yearuminiyamu-plastiki nzvimbo kune imwechete-sided nharaunda yeiyo imwechete yakanaka electrode, uye yakakura kupfuura 1; SDAP ndiyo yenzvimbo density yealuminium-plastiki, kg/m2; mTab ndiyo huwandu hwakazara hweakanaka uye asina kunaka emagetsi, ayo anogona kuoneka kubva kune anogara aripo; mTape ndiyo yakazara misa ye tepi, inogona kutorwa seyakagadzika; kS ireshiyo yenzvimbo yese yekuparadzanisa kune iyo yakazara nharaunda yeyakanaka electrode sheet, uye yakakura kupfuura 1; SDS ndiyo yenzvimbo density yekuparadzanisa, kg/m2; kE ndiyo huremu hwe electrolyte nebhatiri Chiyero chehuwandu, coefficient inhamba yakanaka. Maererano neizvi, zvinogona kugumiswa kuti kuwedzera kwechinhu chimwe chete che x, y uye z kuchawedzera simba chairo rebhatiri.

Kuti udzidze kukosha kwekurudziro yehuwandu hwemapole piece units, iyo yekuvharira huwandu hweyakanaka electrode uye imwe-sided nzvimbo yeimwe chete yakanaka electrode pane chaiyo simba uye simba density yebhatiri, electrochemical. sisitimu uye dhizaini mitemo (kureva, kuona electrode zvinhu uye formula, Compaction density uye N/P, zvichingodaro), uye ipapo orthogonally batanidza nhanho imwe neimwe yezvinhu zvitatu, sehuwandu hwemapole piece unit, huwandu hwe yakanaka electrode coating, uye imwe-sided nzvimbo yechinhu chimwe chete che electrode yakanaka, kuenzanisa iyo electrode zvinhu zvakatemwa nerimwe boka uye Range ongororo yakaitwa pane yakaverengerwa chaiyo simba uye simba density yebhatiri zvichibva pane formula, compacted density uye N/P. Iyo orthogonal dhizaini uye calculation mhedzisiro inoratidzwa muTebhu 1. Mhedzisiro yekugadzirwa kweiyo orthogonal yakaongororwa uchishandisa nzira yemhando, uye mhedzisiro inoratidzwa muMufananidzo 1. Iyo chaiyo yesimba uye simba density yebhatiri inowedzera monotonically nenhamba yepole piece units. , huwandu hweiyo yakanaka electrode coating, uye imwe-sided nzvimbo yeimwe-chidimbu yakanaka electrode. Pakati pezvinhu zvitatu zvehuwandu hwema pole piece units, huwandu hweiyo yakanaka electrode coating, uye imwe-sided nharaunda yeimwe chete yakanaka electrode, huwandu hweiyo yakanaka electrode coating ine yakanyanya kukosha pane chaiyo simba reiyo. bhatiri; Pakati pezvinhu zvitatu zvenzvimbo ine divi rimwe chete, iyo ine divi rimwe chete nzvimbo ye monolithic cathode ine yakanyanya kukosha pakusimba kwesimba rebhatiri.

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Zvinogona kuonekwa kubva kuMufananidzo 1a kuti iyo chaiyo simba rebhatiri rinowedzera monotonically nenhamba yemapuranga chidimbu zvikamu, huwandu hwecathode coating, uye imwe-sided nzvimbo ye-single-piece cathode, iyo inosimbisa kurongeka kwe. iyo theoretical analysis muchikamu chakapfuura; chinhu chinonyanya kukosha chinokanganisa simba rebhatiri iPositive coating amount. Zvinogona kuonekwa kubva kuMufananidzo 1b kuti simba remagetsi rebhatiri rinowedzera monotonically nenhamba yezvidimbu zvemapango, huwandu hwehuputi hwemagetsi emagetsi, uye nzvimbo imwe chete-yakatarisana ye electrode imwe chete yakanaka, iyo inosimbisawo kururama. yekuongorora kwe theoretical yapfuura; chinhu chinonyanya kukosha chinokanganisa kusimba kwebhatiri inzvimbo ine divi rimwe chete remonolithic positive electrode. Maererano nekuongorora kwepamusoro, kuitira kuti uvandudze simba rakananga rebhatiri, ndiyo kiyi yekuwedzera iyo yakanaka electrode coating yakawanda sezvinobvira. Mushure mekuona iyo inogamuchirwa yepamusoro muganho weiyo yakanaka electrode coating huwandu, gadzirisa yasara factor nhanho kuti uwane zvinodiwa nemutengi; Kune kuwanda kwesimba rebhatiri, ndiyo kiyi yekuwedzera imwe-sided nzvimbo ye monolithic positive electrode zvakanyanya sezvinobvira. Mushure mekuona iyo inogamuchirwa yepamusoro muganho weimwe-sided nzvimbo ye monolithic positive electrode, gadzirisa yasara factor nhanho kusangana nezvinodiwa nemutengi.

Zvinoenderana neizvi, zvinogona kugumiswa kuti iyo chaiyo simba uye simba density yebhatiri monotonically inowedzera nehuwandu hwemapapi piece unit, huwandu hweiyo yakanaka electrode coating, uye imwe-sided nharaunda yeimwe chete yakanaka electrode. Pakati pezvinhu zvitatu zvehuwandu hwemapole piece units, huwandu hweiyo yakanaka electrode coating, uye imwe-sided nharaunda yeimwe chete yakanaka electrode, kukanganisa kwehuwandu hweiyo yakanaka electrode coating pane chaiyo simba rebhatiri. inonyanya kukosha; Pakati pezvinhu zvitatu zvenzvimbo ine divi rimwe chete, iyo ine divi rimwe chete nzvimbo ye monolithic cathode ine yakanyanya kukosha pakusimba kwesimba rebhatiri.

Zvadaro, maererano nezvinyorwa [2], inokurukurwa nzira yekudzikisa kunaka kwebhatiri kana chete simba rebhatiri rinodiwa, uye saizi yebhatiri uye zvimwe zviratidzo zvekushanda hazvidiwi pasi peyakatemerwa zvinhu system uye kugadzirisa tekinoroji. level. Kuverengerwa kwemhando yebhatiri nehuwandu hwemapuleti akanaka uye chiyero chechikamu cheyakanaka mahwendefa sezvimiro zvakazvimiririra zvinoratidzwa mufomula (5).

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Mufomula (5), M(x, y) ndiwo huremu hwebhatiri; x ndiyo nhamba yemapuleti akanaka mubhatiri; y ndiyo chiyero chechidimbu cheplateti yakanaka (kukosha kwayo kwakaenzana nehupamhi hwakaparadzaniswa nehurefu, sezvinoratidzwa mumufananidzo 2); k1, k2, k3, k4, k5, k6, k7 ndiwo coefficients, uye hunhu hwawo hunotarwa ne26 paramita ine chekuita nebhatiri huwandu, system yezvinhu uye danho rekugadzira tekinoroji, ona Tafura 2. Mushure meiyo paramita muTable 2 yakatemwa. , imwe neimwe coefficient Inobva yatemwa kuti hukama huri pakati pe 26 parameters uye k1, k2, k3, k4, k5, k6, uye k7 iri nyore kwazvo, asi nzira yekubvisa yakaoma zvikuru. Nemasvomhu kuwana chiziviso (5), nekugadzirisa huwandu hwemahwendefa akanaka uye chiyero chechikamu chemaplateti akanaka, hushoma hwebhatiri mhando inogona kuwanikwa nemuenzaniso dhizaini inogona kuwanikwa.

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Mufananidzo 2 Schematic dhayagiramu yehurefu nehupamhi hwebhatiri laminated

Tafura 2 Laminated cell design parameters

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MuTable 2, iyo yakakosha kukosha ndiyo chaiyo parameter kukosha kwebhatiri ine huwandu hwe50.3Ah. Iwo akakodzera paramita anoona kuti k1, k2, k3, k4, k5, k6, uye k7 i0.041, 0.680, 0.619, 13.953, 8.261, 639.554, 921.609 zvakateerana. , x iri 21, y iri 1.97006 (hupamhi hwe electrode yakanaka ndeye 329 mln, uye kureba i167 mm). Mushure mekugadzirisa, kana nhamba ye electrode yakanaka iine makumi mashanu nerimwechete, kunaka kwebhatiri ndiyo idiki.