Kuchaja lithium bhatiri self-discharge resonance factor uye kuyerwa nzira

著者：Iflowpower – Lieferant von tragbaren Kraftwerken

Iri bepa rinotsanangura mhedzisiro yezvinhu zvakanaka zve electrode, negative electrode materials, electrolytes, uye nzvimbo dzekuchengetera padanho rekuzviburitsa reti lithium ion mabhatiri. Panguva imwecheteyo, inosuma yazvino inowanzoshandiswa yechinyakare lithium-ion bhatiri self-discharge rate yekuyera nzira uye nyowani yekuzviburitsa mwero yekukurumidza kuyerwa nzira. Kubva kuGuoxuan high-tech mainjiniya, gamuchirai munhu wese kuti agoverane! Lithium-ion bhatiri yekuzviburitsa haidzivirirwe, asi hapana chete kudzikiswa kwebhatiri pachayo, asiwo zvakanyanya kukanganisa bhatiri kana kutenderera hupenyu.

The self-discharge ratio yelithium-ion bhatiri inowanzoita 2% kusvika 5% pamwedzi, uye inogona kuzadzisa zvizere zvinodiwa zvemonomer bhatiri. Nekudaro, kana iyo monomer lithium ion bhatiri yakaunganidzwa kuita module, nekuda kwehunhu hwemonomer lithium ion bhatiri, kuguma kwemhepo yemonomer lithium ion bhatiri haigone kunyatsoenderana mushure mekuchaja kwega kwega uye kubuda, kuitira kuti A monomer bhatiri mu lithium-ion bhatiri module inooneka, kushanda kwe monomer lithium ion bhatiri kuchaderera. Sezvo huwandu hwekuchaja uye kuburitswa kwakawedzera, dhigirii rekuipa richawedzera kuwedzera, uye hupenyu hwekutenderera hwadzikira zvakanyanya kupfuura bhatiri remonomer isina bhatiri.

Naizvozvo, tsvakiridzo yakadzama pamusoro pekuzviburitsa kweyero ye lithium ion bhatiri ndiko kudiwa kwekukurumidzira kwekugadzirwa kwebhatiri. Chekutanga, kuzviburitsa kweiyo self-discharge factor battery self-discharge phenomenon inoreva chiitiko chekuzvirasa kana bhatiri richichinjana, uye inozivikanwawo sekunge inochaja. Kuzviburitsa pachako kunogona kukamurwa kuita mhando mbiri: kudzoreredza kuzviburitsa uye kusinga gadzirise kuzviburitsa.

Kurasikirwa kwesimba kunogona kudzoserwa kutsiva kudzoreredza kuzviburitsa, uye musimboti wakafanana neyakajairwa kubuda kwebhatiri. Kurasika kwesimba hakugone kuwana muripo wekuzviburitsa kuzviregedzesa kuzviburitsa, uye zvakakosha chikonzero chekuti mukati mebhatiri yakaitika inverified, kusanganisira yakanaka electrode uye electrolyte reaction, electrolytic electrolytic mhinduro, mabatiro anokonzerwa ne electrolyte autobiosis, uye payakagadzirwa Kuita kusingadzoreki kunokonzerwa nemadiki madiki maseketi anokonzerwa netsvina. Izvo zvinofurira zvinhu zvekuzviburitsa zvinotsanangurwa pazasi.

1 Mhedzisiro yezvakanaka electrode zvinhu zvakakosha ndezvekuti iyo yakanaka electrode zvinhu shanduko yesimbi uye tsvina ipfupi-inoburitswa mukati meiyo negative electrode precipitation, nokudaro ichangobva kuburitswa kubva mubhatiri re lithium-ion. Yah-Meiteng et al. Akadzidza muviri uye electrochemical zvinhu zviviri LIFEPO4 yakanaka zvinhu.

Chidzidzo chacho chakawana kuti kuzvidzora kwehuwandu hwekusvibiswa kwesimbi muzvinhu zvakasvibirira uye kubhadharisa uye kubuda kwemaitiro kwaive kwakakwirira, chikonzero chaiva chokuti simbi yakaderedzwa zvishoma nezvishoma ne electrode isina kunaka, ichibaya diaphragm, zvichiita kuti ipfupi pfupi mubhatiri, zvichiita kuti iwedzere kuzvidzora. 2 Mhedzisiro yechinhu chisina kunaka che electrode pane kuzviburitsa kwakakosha nekuda kwekusagadzikana kusingadzoreki kweiyo negative electrode material uye electrolyte. Kubva muna 2003, Aurbach et al.

Yakarongedzerwa kuti electrolyte yakadzorerwa uye yakasunungurwa gasi, kuitira kuti pamusoro pechikamu chegraphite chionekwe kune electrolyte. Munguva yekuchaja uye kuburitsa maitiro, lithium ion inogara, iyo graphite layered chimiro inoparadzwa zviri nyore, zvichikonzera hukuru hwekuzviburitsa. 3 Impact ye electrolytic solution electrolyte: kuora kwe electrolyte kana kusvibiswa pamusoro pemagetsi asina kunaka; iyo electrode zvinhu inonyungudika mu electrolyte; iyo electrode inonyungudutswa nemhinduro ye electrolytic inonyungudika neiyo insoluble solid kana gasi kugadzira passivation layer, nezvimwe.

Parizvino, nhamba huru yevashandi vekutsvagisa vakazvipira kugadzira zvitsva zvinowedzera kuvharidzira mhedzisiro ye electrolyte pakuzviburitsa. Junliu et al. MCN111 bhatiri electrolyte yekuwedzera yekuwedzera, yakaona kuti bhatiri yakanyanya tembiricha kutenderera kuita inovandudzwa, uye mwero wekuzviburitsa wega unodzikiswa.

Chikonzero ndechekuti izvi zvinowedzera zvinogona kuvandudza iyo SEI membrane kuchengetedza bhatiri negative electrode. 4 Mamiriro ekuchengetera mamiriro ezvinhu Zvakajairika zvinopesvedzera tembiricha yekuchengetera uye bhatiri SOC. Kazhinji, kukwirisa tembiricha, kukwira kweSOC, ndiko kukura kwebhatiri kuzviburitsa.

TAKASHI et al. Kukwanisa kuedza pamabhatiri ephosphate ion pasi pekugadzirisa mamiriro. Mhedzisiro yacho inoratidza kuti huwandu hwekuchengetedza huwandu hunodzikira zvishoma nezvishoma nesherufu nguva, uye bhatiri rinosimudzwa.

Liu Yunjian nevamwe vanoshandisa yekutengeserana lithium manganenate powered lithium bhatiri. Yakaona kuti hukama hwehukama hwe electrode yakanaka huri kuwedzera nekukwira. Iko kugona kweiyo negative electrode kuri kuwedzera Kuderera, midziyo yayo yekudzikisa iri kuwedzerawo kusimba, ese ari maviri anogona kukurumidza kunaya kweMN, zvichikonzera kuwedzera kwekuzviburitsa.

5 Zvimwe zvikonzero zvinokanganisa zvinhu zvebhatiri yekuzviburitsa, kunze kwezvinoverengeka zvakatsanangurwa pamusoro apa, kunewo zvinotevera zvinhu: Mukugadzirwa kwekugadzira, maburrs anoitika kana danda rachekwa, uye mamiriro ekugadzira anounzwa mubhatiri. Zvisina kuchena, zvakadai seguruva, simbi poda pandiro, nezvimwewo, izvi zvinogona kukonzera mukati micro-short circuit yebhatiri; kune kunze kwemagetsi emagetsi kana nzvimbo yekunze yakanyorova, iyo yekunze mutsara wekudzivirira haisi zvachose, bheti yebheteri yakashata, inokonzera kunze kwemagetsi emagetsi, zvichiita kuti Self-discharge; panguva yekuchengetedza kwenguva refu, zvinhu zvinoshingaira zve electrode zvinhu uye kusungirirwa kwemuunganidzi wezvino, zvichiita kuti kuderera kwehutano, uye kuzvidzora kunowedzera.

Chimwe nechimwe chezvikonzero zviri pamusoro apa kana kusanganiswa kwezvinhu zvakawanda zvinogona kukonzera kuzvidzora kwemaitiro e-lithium-ion bhatiri, iyo yakaoma kuwana uye kuenzanisa kushanda kwekuchengetedza kwebhatiri. Chechipiri, nzira yekuyera yekuzvibvisa-yega inogona kuonekwa nekuongorora kwepamusoro, sezvo lithium ion battery self-discharge rate inowanzove yakaderera. Iyo yekuzviburitsa chiyero pachayo inokanganisa tembiricha, kushandiswa kwema cycles uye SOC, saka kuyerwa kwakaringana kwekuzviburitsa kwebhatiri kwakaoma kwazvo uye kunotora nguva.

1 Self-discharge rate Traditional Measurement Method Parizvino, nzira yechinyakare yekuzviburitsa yega ine marudzi matatu anotevera: Kuburitsa kuona kupera simba kwebhatiri. The self-discharge rate is: in the form of: c is the rated capacity of the battery; C1 ndiko kubuda simba. Mushure mekuvhurwa kwaiswa, iyo yakasara yebhatiri inogona kuwanikwa yebhatiri.

Panguva ino, bhatiri sero rinobhadhariswa zvakare uye kuburitsa kutenderera kutenderera zvakare, tarisa huwandu hwakazara hwegoriki yemagetsi panguva ino. Iyi nzira inogona kuona kuti bhatiri harisi reversible simba rekurasikirwa uye reversible simba kurasikirwa. ● Open-circuit voltage attenuation rate Measurement method Iyo yakavhurika yedunhu voltage uye bhatiri charge state SOC ine hukama hwakananga, chero bedzi ichiyera shanduko yeOCV yebhatiri munguva yenguva, ndiko kuti, iyo nzira iri nyore, inongorekodha voltage yebhatiri chero nguva.

Kupfuurirazve, maererano nekunyorerana pakati pevoltage nebhatiri SOC, iyo yekuchaja mamiriro ebhatiri inogona kuwanikwa. Iko-yega-yega yebhatiri inogona kuwanikwa nekuverenga kweattenuation yevoltage attenuation uye kuverenga kweiyo attenuation kugona inoenderana nenguva yeyuniti. ● Capacity holding method Inoyera simba rebhatiri rekuvhura raunoda kana kuti simba rinodiwa kuchengetedza, zvichibva mukuzviburitsa wega kwebhatiri.

Ndiko kuti, yekuchaja ikozvino kana bhatiri rakavhurika redunhu richiyerwa, uye bhatiri yekuzviburitsa chiyero inogona kutariswa seyakayerwa kuchaja ikozvino. 2 Self-discharge Rate Rapid Measurement Method Nekuda kwenguva yakareba inodiwa kune yakajairika nzira yekuyerwa, chiyero chekuzviburitsa ingori nzira yekusefa bhatiri mubhatiri yekuona maitiro nekuda kwenguva yakareba inodiwa kune yakajairwa kuyerwa nzira. Kubuda kwenhamba yakawanda yezvitsva uye zviri nyore nzira dzekuyera, kuchengetedza nguva yakawanda uye simba kune bhatiri yekuzviburitsa zviyero.

● Digital control tekinoroji tekinoroji yekudzora tekinoroji inzira nyowani yekuzviburitsa yekuyera nzira yakatorwa yekuzviburitsa yekuyera nzira yakavakirwa pamaitiro echinyakare ega-discharge ekuyera nzira. Iyi nzira ine mabhenefiti epfupi, yakanyanya kurongeka, yakakwirira chaiyo, midziyo iri nyore. ● Kuenzana kwemagetsi kuenzana nemaitiro ekugadzirisa ndiyo nzira itsva yekuzvitakura yekuyera nzira, iyo inofanidza bhatiri mune yakaenzana dunhu, iyo inogona kukurumidza uye inobudirira kuyera kuzvidzora kwehuwandu hwemabhatiri e-lithium-ion.

Chechitatu, kuyera zvinoreva kuzvidzora chiyero Seyakakosha performance index ye lithium ion bhatiri, ine zvakakosha pakuongorora uye gratuation yebhatiri, saka iyo yega-discolidation mwero welithium-ion mabhatiri ane kukosha kunosvika kure. 1 Fungidzira dambudziko rebhobho rimwe chete mubhobho imwe chete, zvinhu zvinoshandiswa, zvinhu zvinoshandiswa uye kutonga kwekugadzira zvakangofanana. Kana bhatiri remunhu riripachena rakakura, chikonzero chinogona kunge chiri nekuda kwekusachena uye kuboora diaphragm.

Micro short circuit. Nekuti kukanganisa kweiyo micro-pfupi kune bhatiri kunonoka uye hakuchinjiki. Naizvozvo, kuita kwemabhatiri akadaro hakuna kusiyana zvakanyanya kubva kune akajairwa mabhatiri munguva pfupi, asi nekudzika zvishoma nezvishoma kwemukati kusingadzoreki maitiro, kushanda kwebhatiri kuchave kwakadzikira kupfuura kuita kwayo fekitori uye kumwe kuita kwakajairika bhatiri.

Nokudaro, kuitira kuti uve nechokwadi chehutano hwebheteri yefekitari, bhatiri rinozvibvisa rinofanira kubviswa. 2 Kuisa bhatiri kuboka mabhatiri e-lithium ion kuti ave nani, anosanganisira huwandu, voltage, kuramba kwemukati, uye chena yekubuda mwero, nezvimwe. Kukanganisa kwekuzviburitsa kwebhatiri pakiti yebhatiri chiratidzo chakakosha.

Kana yangoungana kuita module, nekuda kwekuzvidzora kwese monomer lithium ion bhatiri, iyo voltage ichaderera mumadhigirii akasiyana, munhevedzano panguva yesherufu kana kutenderera Pasi pekuchaja, ikozvino yakaenzana, saka inogona kuwedzererwa kana kusazadzikiswa mu lithium-ion bhatiri module mushure mekuchaja, uye kuita kuchaderera zvishoma nezvishoma nehuwandu hwekuchaja uye kubuda. Hupenyu hunotenderera huchienzaniswa nemabhatiri emonomeri asina kupetwa. Naizvozvo, bhatiri paki inoda kuyerwa kwakaringana uye kuongororwa kwekuzvibata kwebhatiri ye lithium ion.

3 Battery SOC estimation Kugadzirisa mutoro kunonziwo simba rakasara, iro rinomiririra chiyero chebhatiri rinoshandiswa kwenguva yakati kana kuti kwenguva refu anobata simba rakasara uye mamiriro ayo akazara, ayo anowanzoshandiswa. Self-discharge rate nezveSOC fungidziro yelithium ion mabhatiri ane yakakosha referensi kukosha. Mushure meiyo yekuzviburitsa ikozvino, kururamisa kwekutanga kukosha kweSOC kunogona kuvandudza iyo SOC yekufungidzira kurongeka.

Kune rumwe rutivi, mutengi anogona kufungidzira nguva kana kufamba chinhambwe chechigadzirwa maererano nesimba rasara; kune rumwe rutivi, iyo SOC kufanotaura kurongeka kweBMS kunogona kunyatso kudzivirira bhatiri kuwandisa Overlant, kuwedzera hupenyu hwebhatiri. .