Mokhoa o mocha le mokhoa oa ho sebelisa lere bakeng sa ho lemoha boemo ba bophelo bo botle ba betri ea lithium

2022/04/08

Mongoli : Iflowpower -Mofani oa Seteishene sa Motlakase se nkehang

China University of Electric Power University, China Key Laboratory, naha ea heso Automotive Technology Research Center Co., Ltd. IN "Journal of Electrician Technology", "Pampiri ke" sehlooho sa pampiri "e itšetlehileng ka ho lemoha maemo a bophelo bo botle le maemo a mang a feto-fetohang" thuto ea tšebeliso ea lere "), e hakanya ka nepo hore lisele tsa motho ka mong ka har'a matla a lithium-ion battery pack Palectural state (SOC) le boemo ba bophelo bo botle (SOH) ke tsa bohlokoa ho lelefatsa bophelo ba lithium-ion battery packs le ho sebelisa lere.

Sengoliloeng sena se thehiloe holim'a betri ea thevenin ea bobeli e lekanang le mohlala oa potoloho, 'me e sebelisa algorithm e feto-fetohang ea Kalman filter (AUKF) ho khakanyo ea nako ea sebele ea betri ea SOC le ohm ho hanyetsa ka hare, le ho latela ohm ho hanyetsa ka hare le ngollano ea betri ea SOH, Estimate battery. SOH ka nako ea sebele. Etsa betri tlas'a maemo a mabeli a fapaneng, netefatsa ho khoneha le ho nepahala ha mokhoa. Ka ho hakanya boemo ba bophelo bo botle ba sele e 'ngoe le e' ngoe le pakete ea betri sehlopheng sa betri ea lithium ion, betri ea monomer e sa tšoaneleheng e behiloe, 'me pakete ea betri e kopantsoe, le mokhoa oa ho sebelisa lere oa matla a hlakileng a koloi ea motlakase ea lithium-ion battery pack. e entsoe.

Eketsa ts'ebeliso ea lisebelisoa tsa libeteri tsa lithium-ion tse matla. Ka tšebeliso e ntseng e eketseha ea matla a macha a matla a lefats'e, tšilafalo ea sepakapaka e ntse e eketseha, ho nts'etsapele likoloi tse ncha tsa matla e fetohile mosebetsi oa bohlokoa bakeng sa nts'etsopele ea indasteri ea sejoale-joale. Har'a bona, likoloi tsa motlakase li fumane tlhokomelo ka katleho e phahameng le tšilafalo e nyenyane.

Lithium-ion powered lithium-ion battery pack ke eona feela sehokelo sa polokelo ea matla koloing ea motlakase. Ha ts'ebetso ea matla a koloi ea motlakase lithium-ion battery pack e fokotsehile ho 80% ea ts'ebetso ea pele, e ke ke ea tšoanela ho sebelisoa likoloing tsa motlakase. Ts'ebetso ea tlhahiso ea matla a lithium-ion battery pack e tsoetse pele, esita le ka mor'a ho tlohela mosebetsi, e ntse e boloka tšireletso e phahameng le matla a motlakase.

Haeba libeteri tsena tsa lithium-ion li ka fumanoa, li tla baka tšenyo e kholo, kahoo li ka nahana ka litepisi tse nang le libeteri tsa lithium ion tse seng li tlohetse mosebetsi. botjha le ho sebedisa hape. Ka lebaka la phapang ea tekanyo ea ho itšehla thajana le mocheso o tloaelehileng tšebelisong ea libeteri tse fapaneng tsa monoma ts'ebelisong ea lisele tse fapaneng tse fapaneng, matla, ho hanyetsa ka hare, le voltage ea betri ea lithium-ion e seng e tlohetse mosebetsi, botsofali bo bong le bo bong ba betri ea monomer bo teng. .

Ka hona, ho fihlela ts'ebeliso e nepahetseng ea lere, hlahloba bocha boemo ba sele e 'ngoe le e' ngoe ka har'a lithium ion power lithium ion battery pack. Boemo ba koloi ea motlakase bo khetholloa ke boemo ba betri ea lithium ion ka betri (stateofcharge, SOC) le boemo ba bophelo bo botle (stateofhealth, SOH). SOC ke karo-karolelano ea matla a masala a hajoale le bokhoni ba lebitso.

E ka bonahatsa ka ho toba matla a setseng a betri, 'me e bonts'a ka ho toba boholo ba hona joale ba ho khanna sebaka sa koloi ea motlakase. E 'ngoe ea likarolo tsa bohlokoa tsa liqeto tsa matla a matla a betri ea lithium-ion; SOH ke betri Palo e phahameng ea matla le matla a lekantsoeng a hona joale a ka lefisoa, ho bonts'a tekanyo ea botsofali ba betri, e bonts'a ho fokotseha ha ntho e sebetsang ka har'a betri, matla a sebele a fokotsehile, ho hanyetsa ka hare hoa eketseha, joalo-joalo Hakanya ka nepo boemo ba betri ea betri ea lithium-ion, e leng e 'ngoe ea litheknoloji tsa bohlokoa tsa betri ea lithium-ion e matla.

Mokhoa o teng oa khakanyo ea betri ea SOC o ka aroloa ka mekhahlelo e mene e latelang: Mokhoa oa lintlha tsa 1Amity: Mokhoa ona ke oa mokhoa o bulehileng oa loop, ho qala ka moelelo oa SOC, ka ho bala palo ea sampuli ea hajoale ho fihlela nako ea betri. SOC. Tabeng eo boleng ba pele ba SOC bo nepahetseng, mokhoa ona o boloka ho nepahala ho phahameng ka nako e khutšoanyane, empa ha nako ea ho sebetsa e ntse e eketseha, ho nepahala ha mokhoa ona ho ntse ho fokotseha ka lebaka la ho se ts'oanehe ha ts'ebetso e sa tsitsang ea Cullen le ho feta. teko ea hona joale. Ha e khone ho sebelisa nako e telele.

2 Features Parameter: Litšobotsi tsa betri hangata ke potoloho e bulehileng ea betri (Open-Circuitvoltage, OCV) le ho hanyetsa ka hare. Mokhoa o bulehileng oa motlakase oa potoloho o fumana boleng bo lumellanang ba SOC ka ho lekanya kamano e tsamaellanang ea betri ea OCV le SOC, empa boleng ba motlakase oa ho bula betri bo thata ho fumana, ho ema nako e telele, ho baka phoso e kholoanyane. Tekanyo ea khanyetso ea kahare e rarahane ho feta ka lebaka la lisebelisoa tsa tlhahlobo, 'me ha e khone ho fihlela litlhoko tsa likhakanyo tsa inthanete.

3 Data Driven: Mokhoa ona o entsoe ka ho khanna data, ebe o sebelisa ho lekanya boemo ba betri. Mokhoa ona o bohlokoa bakeng sa logic e sa utloahaleng, netweke ea maiketsetso ea neural, marang-rang a fuzzy neural le mochini oa vector oa tšehetso. Mekhoa e joalo e itšetlehile haholo ka botlalo le katleho ea lintlha tsa koetliso.

Nakong ea botsofali ba betri, ka liphetoho tsa litšobotsi tsa betri, lintlha tsa koetliso li tla fokola butle-butle, kahoo li ama phello e lekantsoeng. 4 Mokhoa oa ho lekanya o ipapisitse le mekhoa e fapaneng: mofuta ona oa mokhoa oa khakanyo o ipapisitse le mohlala oa betri, e leng mokhoa oa ho sebetsa o koetsoeng. Theknoloji ea katoloso e sebetsang ka ho fetesisa ea Karman, theknoloji ea filthara e habeli ea Kalman, katoloso e matla ea theknoloji ea ho sefa ea Kalman, theknoloji ea ho sefa likaroloana, jj.

Mekhoa e joalo e kopantsoe le mekhoa e mengata ea likhakanyo tsa SOC ho qoba bofokoli, e ba nolofalletsang ho latela li-SOC ka nepo, ke tataiso ea hajoale ea khakanyo ea hajoale ea SOC. Mokhoa o teng oa ho lekanya SOH oa betri o na le tse 'maloa: 1 Mokhoa oa ho ntša ka ho toba: Ke mokhoa oa ho hlahloba phello ea mojaro ho betri SOH. Mokhoa ona o rarahane, 'me SOH ea betri e lokela ho lekoa.

E ke ke ea elelloa tlhahlobo ea inthanete; Ho lekanya mokhoa oa ho itšireletsa ka hare: SOH ea betri e ka khetholloa ka kamano ea ho hanyetsa ka hare ho ohmic, 'me interformance ea ohmic ea betri e fumanoa ka ho hlahloba ho lekanya, ka hona ho bala SOH ea betri ho fumana betri (Electrochemical Impedance Analysis) (EIS): Mokhoa ona oa bohlokoa oa ho nahana ke ho sebelisa bongata ba matšoao a sinusoidal ho betri e lekantsoeng, le ho sekaseka tlhahisoleseling e fumanoeng ka khopolo ea lerootho, ho bolela esale pele tekanyo ea botsofali ba betri, mokhoa ona e lokela ho ba palo e kholo ea liteko. data, ts'ebetso e tlase; 4 Tlhahlobo ea lik'hemik'hale: mokhoa ona SOH e hakanngoa ka ho lekanya phetoho ea sekhahla sa electrolyte, empa mokhoa ona o tlameha ho senya sebopeho sa betri e le hore betri e se ke ea hlola e e sebelisa; 5 Khakanyo ea sejoale-joale: ea bohlokoa ea Kalman filter algorithm, neural network algorithm, fuzzy logic algorithm, joalo-joalo Mokhoa o ka sekaseka boemo ba betri ka boleng, 'me phello ea sebele ea kopo e betere. E le ho arabela mathata a kang boemo ba betri ea hona joale, phapang e fokola, pampiri ena e sebelisa mokhoa oa bobeli oa THEVENINININOININ Equivalent Circuit Model ea Lithium Ion Battery, 'me e sebelisa adaptiveuntedkalmanfilter, Aukf) algorithm ho lekanya nako ea sebele.

Adaptive elsencing algorithm algorithm e kopantseng le elsencing Kalman filter algorithm le algorithm e atolositsoeng ea Kalman, ho theha kamano ea cyclic iterative, litekanyo tse tsebahalang tsa betri li hakanya boemo ba betri, ebe e sebelisa boemo ba betri joalo ka palo e tsebahalang ea litekanyetso tse hakanyetsoang tsa mohlala, mofuteng ona oa Recursive calculation, oa sebele. -khakanyo ea nako ea betri SOC le ohm ho hanyetsa ka hare. Hakanya betri SOH e ka hakanngoa ka nako ea sebele ho sebelisoa ohmic resistance le betri SOH. 'Me ka ho lekanya boemo ba bophelo bo botle ba sele e' ngoe le e 'ngoe ea sele le betri paketeng ea betri, boleng ba betri pakete bo lekantsoe,' me mokhoa oa ho sebelisa lere oa motlakase o hlakileng oa motlakase oa motlakase oa lithium-ion battery pack o hlahisoa.

Setšoantšo sa 1 Battery ea mofuta oa bobeli THEVENIN Equivalent Circuit Model Conclusion 1) E ipapisitse le mofuta oa bobeli oa THEVENIN Equivalent Circuit Model ea betri, e etselitsoe algorithm ea ho sefa ea Kalman. Teko e netefatsa ho nepahala ha algorithm ea ho sefa ea Calman maemong a mabeli a fapaneng a hajoale, mme algorithm ha e felle feela ke maemo a hajoale, mme algorithm e ka tsebahatsa algorithm. Omhene khanyetso.

2) Sehlooho sena se sebelisa ohm acheological ea tsamaiso ea lisele tsa nako, ebe e sebelisa khanyetso ea ka hare le ts'ebetso ea betri ea SOH ho lekanya betri ea SOH, le ho netefatsa ho nepahala ha likhakanyo tsa eona ka liteko. Algorithm ena e potlakile, e nepahetse haholo, 'me e na le ts'ebetso e ntle. 3) Pampiri ena, ka khakanyo ea SOH le betri e tloaelehileng ea monomer ea sele e 'ngoe le e' ngoe ka betri ea lithium-ion, betri ea monomer e sa tšoaneleheng, ho kopanngoa ha betri pakete, e etsa ka ho hlaka litaelo tsa botsofali tsa matla a koloi ea motlakase lithium- ion betri pakete Mokhoa oa ho lokisa betri ea phetisetso ea 'mele, ho hlokomela ts'ebeliso ea lisebelisoa tsa libeteri tse matla tsa lithium ion, le ho netefatsa ho khoneha ha mokhoa ona.

4) Adaptive elsencing Kalman filtering algorithm e ke ke ea hakanya feela SOC le ohm khanyetso ea kahare ea betri, motheong oa mohlala oa betri, mohlala oa sebaka sa mmuso o thehiloe bakeng sa liparamente tse fapaneng, 'me litšobotsi tsa polarization tsa mohlala oa betri li ka finyelloa. . Khakanyo ea nako ea sebele inthaneteng. .

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