TianJinlishen, Guoxuan Hi-Tech le lihlopha tse ling li fihletse lipatlisiso le nts’etsopele ea libeteri tse matla tsa 300 Wh/kg. Ho feta moo, ho ntse ho na le palo e kholo ea lihlopha tse etsang mosebetsi o amanang le nts’etsopele le lipatlisiso.

Sebopeho sa libeteri tsa lithium-ion tse khonang ho kenya letsoho hangata li kenyelletsa li-electrode tse ntle, li-electrode tse mpe, li-separators, li-electrolyte, le lisebelisoa tse ling tse hlokahalang tse kang li-tape, litheipi le li-plastiki tsa aluminium. Ho ea ka litlhoko tsa puisano, mongoli oa pampiri ena o arola lintho tse ka har’a betri ea lithium-ion ea soft-pack ka mekhahlelo e ‘meli: ho kopana ha palo ea palo le lisebelisoa tse sa faneng ka matla. Pole piece unit e bua ka electrode e ntle hammoho le electrode e mpe, le li-electrode tsohle tse ntle le Electrode e mpe e ka nkoa e le motsoako oa likaroloana tsa palo tse entsoeng ka lihlopha tse ‘maloa tsa palo; lintho tse sa faneng ka matla li bua ka lintho tse ling kaofela ntle le ho kopana ha likaroloana tsa lipalo, joalo ka li-diaphragm, li-electrolyte, li-pole lugs, lipolasetiki tsa aluminium, litheipi tse sireletsang le ho felisoa. tepi joalo-joalo Bakeng sa LiMO 2 tse tloaelehileng (M = Co, Ni le Ni-Co-Mn, joalo-joalo)/carbon system Li-betri tsa Li-ion, ho kopana ha lihlopha tsa palo ho etsa qeto ea bokhoni le matla a betri.

Hajoale, molemong oa ho fihlela sepheo sa 300Wh/kg ea matla a khethehileng a betri, mekhoa ea mantlha e kenyelletsa:

(1) Khetha tsamaiso ea thepa e phahameng, electrode e ntle e entsoe ka ternary e phahameng ea nickel, ‘me electrode e mpe e entsoe ka silicon carbon;

(2) Rala electrolyte ea matla a phahameng ho ntlafatsa motlakase o khaotsoeng;

(3) Ntlafatsa ho hlophisoa ha slurry e ntle le e mpe ea li-electrode le ho eketsa karolo ea lintho tse sebetsang ka har’a electrode;

(4) Sebelisa foil ea koporo e mosesaane le foil ea aluminium ho fokotsa karolo ea ba bokellang hona joale;

(5) Eketsa palo ea ho roala ea li-electrode tse ntle le tse mpe, ‘me u eketse karolo ea lisebelisoa tse sebetsang ho li-electrode;

(6) Laola palo ea electrolyte, fokotsa palo ea electrolyte le ho eketsa matla a khethehileng a libeteri tsa lithium-ion;

(7) Ntlafatsa sebopeho sa betri le ho fokotsa karolo ea li-tab le lisebelisoa tsa ho paka ka har’a betri.

Har’a mefuta e meraro ea betri ea cylindrical, square hard shell le soft-pack laminated sheet, betere ea pakete e bonolo e na le litšobotsi tsa moralo o feto-fetohang, boima bo bobebe, khanyetso e tlase ea kahare, ha ho bonolo ho phatloha, le lipotoloho tse ngata, le matla a ikhethileng. ts’ebetso ea betri le eona e ntle haholo. Ka hona, betri ea laminated soft-pack lithium-ion ke sehlooho se chesang sa lipatlisiso hajoale. Mokhoa oa ho etsa mohlala oa laminated soft-pack power lithium-ion battery, mefuta e meholo e ka aroloa ka likarolo tse tšeletseng tse latelang. Tse tharo tsa pele li ka nkoa li khethoa ke boemo ba tsamaiso ea electrochemical le melao ea moralo, ‘me tse tharo tsa ho qetela hangata ke moralo oa mohlala. mefuta e fapaneng ya thahasello.

(1) Lintho tse ntle le tse mpe tsa li-electrode le libopeho;

(2) The compaction segokanyipalo ea li-electrode tse ntle le tse mpe;

(3) Karo-karolelano ea matla a li-electrode a fosahetseng (N) ho ea ho matla a electrode (P) (N / P);

(4) Palo ea likaroloana tsa palo (e lekanang le palo ea likotoana tse ntle);

(5) Chelete e ntle ea ho roala li-electrode (motheong oa boikemisetso ba N / P, pele u fumana palo e ntle ea ho roala elektrode, ebe u etsa qeto ea hore na ho na le bokae bo bobe ba electrode);

(6) Sebaka se nang le lehlakore le le leng la electrode e le ‘ngoe e nepahetseng (e khethiloeng ke bolelele le bophara ba electrode e nepahetseng, ha bolelele le bophara ba electrode e nepahetseng li khethoa, boholo ba electrode e mpe le eona e khethoa, le boholo ba sele bo ka khethoa).

Ntlha ea pele, ho ea ka lingoliloeng [1], tšusumetso ea palo ea likaroloana tsa palo, palo ea ho roala ha elektrode e ntle le sebaka se le seng sa karolo e le ‘ngoe ea electrode e nepahetseng ka matla a itseng le matla a matla a matla. betri e buisanoa ka eona. Matla a khethehileng (ES) a betri a ka hlahisoa ka equation (1).

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Ka foromo (1): x ke palo ea li-electrode tse ntle tse ka har’a betri; y ke palo ea ho roala ea electrode e ntle, lik’hilograma / m2; z ke sebaka se nang le lehlakore le le leng la electrode e le ‘ngoe e ntle, m2; xN*, y > 0, z > 0; e(y, z) ke matla ao karolo ea palo e ka kenyang letsoho, Wh, foromo ea lipalo e bonts’itsoe ka mokhoa oa (2).

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Ka mokhoa (2): DAV ke karolelano ea motlakase oa ho ntša metsi, V; PC ke karo-karolelano ea boima ba lisebelisoa tse sebetsang tsa eleketrode ho boima ba kakaretso ea lisebelisoa tse sebetsang tsa eleketrode hammoho le conductive agent le binder,%; SCC ke bokhoni bo khethehileng ba lisebelisoa tse sebetsang tsa electrode, Ah / kg; m(y, z) ke boima ba yuniti ya polekoto, kg, mme foromo ya dipalo e bontshwa ka foromo (3).

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Ka foromo (3): KCT ke karo-karolelano ea kakaretso ea eleketrode e ntle ea monolithic (kakaretso ea sebaka sa ho roala le sebaka sa foil ea tabo) ho ea sebakeng se lehlakoreng le le leng la elektrode e ntle ea monolithic, ‘me ke kholo ho feta 1; Tal ke botenya ba mokelli oa hona joale oa aluminium, m; ρAl ke boima ba ‘mokelli oa hona joale oa aluminium, kg/m3; KA ke karo-karolelano ea kakaretso ea eleketrode e ‘ngoe le e’ ngoe e mpe ho ea sebakeng se nang le lehlakore le le leng la electrode e le ‘ngoe e ntle,’ me e kholo ho feta 1; TCu ke botenya ba mokelli oa hona joale oa koporo, m; ρCu ke ‘mokelli oa hona joale oa koporo. Boima ba ‘mele, lik’hilograma/m3; N/P ke karo-karolelano ea matla a li-electrode tse mpe ho ea ho matla a li-electrode tse ntle; PA ke karo-karolelano ea li-electrode tse sebetsang tse boima ho palo eohle ea li-electrode tse sebetsang tse mpe hammoho le conductive agent le binder,%; SCA ke karo-karolelano ea lintho tse bonahalang eketrode negative, Ah/kg. M(x, y, z) ke boima ba ntho e sa thuseng ka matla, kg, palo ya palo e bontshwa ka foromo (4)

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Ka foromo (4): kAP ke karo-karolelano ea sebaka sa aluminium-plastiki ho sebaka se lehlakoreng le le leng la electrode e le ‘ngoe e nepahetseng,’ me e kholo ho feta 1; SDAP ke aal density ea aluminium-plastiki, kg/m2; mTab ke boima bo felletseng ba li-electrode tse ntle le tse mpe, tse ka bonoang ho tsoa ho kamehla; mTape ke boima ba kakaretso ea tepi, e ka nkoang e le ntho e tsitsitseng; kS ke karo-karolelano ea kakaretso ea sebaka sa karohano ho sebaka sohle sa letlapa le nepahetseng la elektrode, ‘me e kholo ho feta 1; SDS ke sebaka sa sekhahla sa karohano, kg/m2; kE ke boima ba electrolyte le betri Karo-karolelano ea matla, coefficient ke palo e nepahetseng. Ho ea ka sena, ho ka fihleloa qeto ea hore keketseho ea ntho leha e le efe e le ‘ngoe ea x, y le z e tla eketsa matla a khethehileng a betri.

Bakeng sa ho ithuta bohlokoa ba tšusumetso ea palo ea likaroloana tsa palo, palo ea ho roala ha electrode e nepahetseng le sebaka se lehlakoreng le le leng la electrode e le ‘ngoe e nepahetseng holim’a matla a khethehileng le matla a betri, electrochemical. tsamaiso le melao ea moralo (ke hore, ho fumana hore na eleketrode lintho tse bonahalang le foromo, Compaction segokanyipalo le N/P, joalo-joalo), ‘me joale orthogonally kopanya mong le e mong boemo ba lintlha tse tharo, tse kang palo ea palo sekotwana diyuniti, palo ea. Ho roala elektrode e ntle, le sebaka se nang le lehlakore le le leng la elektrode e ntle, ho bapisa lisebelisoa tsa elektrode tse khethiloeng ke sehlopha se itseng, ‘me tlhahlobo ea Range e entsoe ho latela matla a itseng a matla le matla a betri a thehiloeng ho foromo, boima bo kopanetsoeng le N/P. Moralo oa orthogonal le liphetho tsa lipalo li bonts’itsoe ho Lethathamo la 1. Liphetho tsa moralo oa orthogonal li ile tsa hlahlojoa ho sebelisoa mokhoa oa mefuta-futa, ‘me liphello li bontšoa ho Setšoantšo sa 1. Matla a khethehileng a matla le matla a betri a eketseha monotonically ka palo ea likaroloana tsa pole , palo ea li-electrode tse ntle, le sebaka se nang le lehlakore le le leng la electrode e ntle ea karolo e le ‘ngoe. Har’a lintlha tse tharo tsa palo ea likaroloana tsa palo, palo ea li-electrode tse ntle, le sebaka se lehlakoreng le le leng la electrode e le ‘ngoe e ntle, palo ea li-electrode tse ntle li na le tšusumetso e kholo ho matla a khethehileng a motlakase. betri; Har’a lintlha tse tharo tsa sebaka se lehlakoreng le le leng, sebaka se nang le lehlakore le le leng la monolithic cathode se na le tšusumetso e kholo ho matla a matla a betri.

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E ka bonoa ho Setšoantšo sa 1a hore matla a khethehileng a betri a eketseha ka monotonically ka palo ea likaroloana tsa palo, palo ea ho roala ha cathode, le sebaka se nang le lehlakore le le leng la cathode e le ‘ngoe, e netefatsang ho nepahala ha tshekatsheko ya thiori mo karolong e e fetileng; ntho ea bohlokoa ka ho fetisisa e amang matla a itseng a betri ke Positive coating amount. E ka bonoa ho Setšoantšo sa 1b hore matla a betri a eketseha ka monotonically ka palo ea likaroloana tsa palo, palo ea li-electrode tse ntle, le sebaka se lehlakoreng le le leng la electrode e le ‘ngoe e nepahetseng, e netefatsang ho nepahala. ea tlhatlhobo e fetileng ea theory; Ntho ea bohlokoa ka ho fetisisa e amang matla a betri ke sebaka se lehlakoreng le le leng la electrode e ntle ea monolithic. Ho ea ka tlhahlobo e ka holimo, e le ho ntlafatsa matla a itseng a betri, ke senotlolo sa ho eketsa palo e ntle ea ho roala elektrode ka hohle kamoo ho ka khonehang. Ka mor’a ho fumana moeli o ka holimo o amohelehang oa tekanyo e ntle ea ho roala li-electrode, fetola maemo a setseng ho finyella litlhoko tsa moreki; Bakeng sa matla a matla a betri, ke senotlolo sa ho eketsa sebaka se lehlakoreng le le leng la elektrode e ntle ea monolithic ka hohle kamoo ho ka khonehang. Kamora ho khetha moeli o kaholimo o amohelehang oa sebaka se lehlakoreng le le leng la electrode e ntle ea monolithic, fetola maemo a setseng ho fihlela litlhoko tsa moreki.

Ho ea ka sena, ho ka fihleloa qeto ea hore matla a matla le matla a betri a eketseha ka monotonically ka palo ea likaroloana tsa palo, palo ea li-electrode tse ntle, le sebaka se lehlakoreng le le leng la electrode e le ‘ngoe e nepahetseng. Har’a lintlha tse tharo tsa palo ea likaroloana tsa palo, palo ea li-electrode tse ntle, le sebaka se nang le lehlakore le le leng la electrode e le ‘ngoe e ntle, phello ea palo ea li-electrode tse ntle ho matla a khethehileng a betri ke. ea bohlokoa ka ho fetisisa; Har’a lintlha tse tharo tsa sebaka se lehlakoreng le le leng, sebaka se nang le lehlakore le le leng la monolithic cathode se na le tšusumetso e kholo ho matla a matla a betri.

Joale, ho ea ka lingoliloeng [2], ho buisanoa ka mokhoa oa ho fokotsa boleng ba betri ha ho hlokahala feela matla a betri, ‘me boholo ba betri le matšoao a mang a ts’ebetso ha li hlokehe tlas’a tsamaiso ea thepa e ikemiselitseng le theknoloji ea ho sebetsa. boemo. Palo ea boleng ba betri le palo ea lipoleiti tse ntle le karolo ea karolelano ea lipoleiti tse nepahetseng e le mefuta e ikemetseng e bonts’oa ka foromo (5).

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Ka foromo (5), M(x, y) ke kakaretso ea boima ba betri; x ke palo ea lipoleiti tse positive ka har’a betri; y ke karolo ea likarolo tsa lipoleiti tse ntle (boleng ba eona bo lekana le bophara bo arotsoeng ka bolelele, joalokaha ho bontšitsoe setšoantšong sa 2); k1, k2, k3, k4, k5, k6, k7 ke li-coefficients, ‘me boleng ba tsona bo khethoa ke li-parameter tse 26 tse amanang le matla a betri, tsamaiso ea thepa le boemo ba theknoloji ea ho sebetsa, bona Lethathamo la 2. , coefficient e ‘ngoe le e’ ngoe Joale ho etsoa qeto ea hore kamano pakeng tsa li-parameter tsa 2 le k26, k1, k2, k3, k4, k5, le k6 e bonolo haholo, empa mokhoa oa ho tsoa o boima haholo. Ka ho fumana phatlalatso ea lipalo (7), ka ho fetola palo ea lipoleiti tse ntle le karolo ea likarolo tsa lipoleiti tse ntle, bonyane boleng ba betri bo ka finyelloang ka moralo oa mohlala bo ka fumanoa.

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Setšoantšo sa 2 Setšoantšo sa schematic sa bolelele le bophara ba betri ea laminated

Letlapa la 2 Litekanyetso tsa moralo oa lisele tse Laminated

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Ho Lethathamo la 2, boleng bo khethehileng ke boleng ba parameter ea sebele ea betri e nang le matla a 50.3Ah. Lintlha tse amehang li bontša hore k1, k2, k3, k4, k5, k6, le k7 ke 0.041, 0.680, 0.619, 13.953, 8.261, 639.554, 921.609 ka ho latellana. , x ke 21, y ke 1.97006 (bophara ba electrode e ntle ke 329 mln, le bolelele ke 167 mm). Ka mor’a ho ntlafatsa, ha palo ea electrode e nepahetseng e le 51, boleng ba betri ke bo bonyenyane ka ho fetisisa.