Kuwedzeredza ndechimwe chezvinhu zvakanyanya kuomesesa mune yazvino lithium bhatiri chengetedzo bvunzo, saka zvinodikanwa kuti unzwisise maitiro ekuwedzera uye matanho aripo ekudzivirira kuwandisa.
Mufananidzo 1 ndiyo voltage uye tembiricha curves yeNCM+LMO/Gr system bhatiri kana yawedzerwa.Iyo voltage inosvika pakakwirira pa 5.4V, uye ipapo voltage inodonha, pakupedzisira inokonzera kupisa kwemhepo.Iyo voltage uye tembiricha curves yekuwedzeredza kweiyo ternary bhatiri yakafanana nayo.
Kana iyo lithium bhatiri yakawandisa, inoburitsa kupisa uye gasi.Kupisa kunosanganisira ohmic kupisa uye kupisa kunogadzirwa nemativi ekuita, ayo ohmic kupisa ndiyo huru.Iyo yedivi rekuita kwebhatiri inokonzerwa nekuwedzeredza ndeyekutanga kuti yakawandisa lithium inopinzwa mune iyo yakaipa electrode, uye lithium dendrites ichakura pamusoro peiyo negative electrode (N / P ratio ichakanganisa yekutanga SOC ye lithium dendrite kukura).Chechipiri ndechekuti lithiamu yakawandisa inotorwa kubva kune yakanaka electrode, ichiita kuti chimiro cheiyo yakanaka electrode iparare, ichiburitsa kupisa uye kuburitsa okisijeni.Okisijeni inomhanyisa kuparara kwe electrolyte, kudzvanywa kwemukati kwebhatiri kucharamba kuchikwira, uye vharafu yekudzivirira ichavhurwa mushure meimwe nhanho.Kubatana kwezvinhu zvinoshanda nemhepo kunowedzera kuwedzera kupisa.
Zvidzidzo zvakaratidza kuti kuderedza huwandu hwe electrolyte kunoderedza zvakanyanya kupisa uye kugadzirwa kwegasi panguva yekuchajisa.Mukuwedzera, yakave yakadzidzwa kuti kana bhatiri isisina splint kana kuti valve yekuchengetedza haigoni kuvhurwa kazhinji panguva yekuwedzera, bhatiri rinowanzoputika.
Kuwedzeredza kudiki hakuzokonzerese kupera kwemafuta, asi kunokonzeresa kupera simba.Chidzidzo chacho chakawana kuti kana bhatiri rine NCM/LMO hybrid material seye electrode yakanaka yakachajiswa, hapana chiri pachena chekuora kwesimba apo SOC yakaderera kupfuura 120%, uye simba rinoora zvakanyanya kana SOC yakakwirira kudarika 130%.
Parizvino, pane nzira dzinoverengeka dzekugadzirisa dambudziko rekuchaja:
1) Idziviriro yekudzivirira inoiswa muBMS, kazhinji iyo yekudzivirira voltage yakaderera pane peak voltage panguva yekuchaja;
2) Kuvandudza kuwedzeredza kupikisa kwebhatiri kuburikidza nekugadzirisa zvinhu (sekupfeka zvinhu);
3) Wedzera anti-overcharge additives, senge redox pairs, kune electrolyte;
4) Nekushandiswa kwe-voltage-sensitive membrane, kana bhatiri yakanyanyisa, iyo membrane kuramba yakaderedzwa zvakanyanya, iyo inoshanda seshunt;
5) OSD uye CID magadzirirwo anoshandiswa mu square aluminium shell mabhatiri, ayo akajairika anti-overcharge dhizaini.Bhatiri rehomwe haigone kuwana dhizaini yakafanana.
References
Simba Rekuchengetedza Zvishandiso 10 (2018) 246-267
Panguva ino, tichaunza shanduko yemagetsi uye tembiricha ye lithium cobalt oxide bhatiri kana yakawandisa.Mufananidzo uri pazasi ndeye overcharge voltage uye tembiricha curve ye lithium cobalt oxide bhatiri, uye yakachinjika axis ndiyo delithiation huwandu.Iyo yakaipa electrode igraphite, uye electrolyte solvent iEC/DMC.Bhatiri rinokwana 1.5Ah.Iko kuchaja ikozvino 1.5A, uye tembiricha ndiyo tembiricha yemukati yebhatiri.
Zone I
1. Bhatiri voltage inokwira zvishoma nezvishoma.Iyo yakanaka electrode ye lithium cobalt oxide delithiates kupfuura 60%, uye simbi lithium inonaya padivi reelectrode yakaipa.
2. Bhatiri inoputika, iyo inogona kunge yakakonzerwa ne-high-pressure oxidation ye electrolyte padivi rakanaka.
3. Tembiricha yakanyatsogadzikana nekukwira kudiki.
Zone II
1. Tembiricha inotanga kukwira zvishoma nezvishoma.
2. Muchikamu che80 ~ 95%, iyo impedance ye electrode yakanaka inowedzera, uye kupikisa kwemukati kwebheteri kunowedzera, asi kunoderera pa95%.
3. Bhatiri yebhatiri inodarika 5V uye inosvika pakakwirira.
Zone III
1. Panenge pa95%, tembiricha yebhatiri inotanga kukwira nekukurumidza.
2. Kubva pa95%, kusvika pedyo ne100%, bhatiri voltage inodonha zvishoma.
3. Kana kupisa kwemukati kwebheteri kunosvika kusvika 100 ° C, bhatiri rinodonha zvakanyanya, izvo zvinogona kukonzerwa nekuderera kwekudzivirira kwemukati kwebheteri nekuda kwekuwedzera kwekushisa.
Zone IV
1. Kana kupisa kwemukati kwebheteri kwakakwirira kudarika 135 ° C, PE separator inotanga kunyunguduka, kupikisa kwemukati kwebheteri kunokwira nokukurumidza, mhepo inosvika kumuganhu wepamusoro (~ 12V), uye ikozvino inodonha kusvika pasi. value.
2. Pakati pe10-12V, bhatiri yebhatiri haina kugadzikana uye ikozvino inoshanduka.
3. Kupisa kwemukati kwebheteri kunokwira nokukurumidza, uye kutonhora kunokwira kusvika 190-220 ° C bhatiri risati raputika.
4. Bhatiri rakaputsika.
Kuwanda kwemabhatiri eternary kwakafanana neiyo ye lithium cobalt oxide mabhatiri.Paunenge uchichaja mabhatiri e ternary ane square aluminium shells pamusika, iyo OSD kana CID inozoitwa activated kana ichipinda muZone III, uye yazvino ichagurwa kudzivirira bhatiri kubva pakuchaja.
References
Nyaya yeThe Electrochemical Society, 148 (8) A838-A844 (2001)
Nguva yekutumira: Zvita-07-2022