Ukutshaja okukhawulezayo ngokubanzi kokutshaja okunamandla aphezulu kwe-DC, isiqingatha seyure sinokuzaliswa ngama-80% ombane, ukutshaja okukhawulezayo kwe-DC yokutshaja ivoltheji ngokuqhelekileyo inkulu kunombane webhetri. Ke yeyiphi imingcipheko yokutshaja kwebhetri ye-lithium ngokukhawuleza malunga neengxaki zobugcisa bebhetri ye-lithium yokutshaja ngokukhawuleza?
Yeyiphi imingcipheko ehambelana nokutshaja ngokukhawuleza iibhetri ze-lithium?
Iindlela ezintathu ezisisiseko zokuqonda ukutshaja okukhawulezayo zezi: gcina i-voltage ingaguquguquki kwaye unyuse umsinga; gcina isigxina sangoku kwaye ukwandise i-voltage; kwaye unyuse i-current kunye ne-voltage ngexesha elinye. Nangona kunjalo, ukuqonda ngenene ukutshaja okukhawulezayo, kungekuphela nje ukuphucula okwangoku kunye nombane onokuthi ube njalo, itekhnoloji yokutshaja ngokukhawuleza iyiseti epheleleyo yeenkqubo, kubandakanya iadaptha yokutshaja ngokukhawuleza kunye nenkqubo yolawulo lwamandla obukrelekrele.
Ukutshaja okukhawulezayo kwexesha elide kuchaphazela ubomi beebhetri ze-lithium, ibhetri ye-lithium ukutshaja ngokukhawuleza kukuhlawula umjikelo wobomi bebhetri, kuba ibhetri sisixhobo esivelisa umbane ngokusabela kwe-electrochemical, ukutshaja kukwenzeka kokusabela kweekhemikhali, kunye nokutshaja ngokukhawuleza kuya kuba kwigalelo elikhawulezayo lokutshaja okuphezulu kwibhetri, ukusetyenziswa rhoqo komthamo webhetri, ukusetyenziswa rhoqo kokunciphisa umthamo webhetri, ukusetyenziswa rhoqo kwebhetri. imijikelo yokutshaja kunye nokukhupha.
Ibhetri yeLithium ukutshaja ngokukhawuleza kuzisa iziphumo ezintathu: ifuthe lobushushu, imvula yelithium kunye nefuthe lomatshini.
1. Ukutshaja ngokukhawuleza okukhawulezileyo kukhawulezisa i-polarization yeseli yebhetri
Xa umbane oqhubekayo wokutshaja mkhulu, i-ion concentration kwi-electrode iphakama, i-polarization iyanda, kwaye i-voltage ye-terminal yebhetri ayikwazi ukuhambelana ngokuthe ngqo kunye nomgca kunye nomthamo wombane ohlawulisiweyo. Kwangaxeshanye, ukutshaja okuphezulu kwangoku, ukonyuka kokuchasana kwangaphakathi kuya kukhokelela ekwandeni kwesiphumo sokufudumeza kweJoule okubangelwa ziziphumo ebezingalindelekanga, njengokubola kwe-electrolyte reaction, ukuveliswa kwegesi kunye nothotho lweengxaki, umngcipheko wonyuka ngequbuliso, impembelelo kukhuseleko lwebhetri, ubomi beebhetri ezingenamandla buya kucuthwa kakhulu.
2. Ukutshaja ngokukhawuleza okuthe gqolo kunokukhokelela ekuqaqambiseni undoqo webhetri
Ibhetri ye-lithium ukutshaja ngokukhawuleza kuthetha ukuba i-ion ze-lithium zikhutshwa ngokukhawuleza kwaye "ziqubha ukuya" kwi-anode, efuna ukuba izinto ze-anode zibe nomthamo wokufakela i-lithium ngokukhawuleza, ngenxa yesakhono esifakwe kwi-lithium kunye ne-lithium yemvula enokubakho iphantse ifane, kwiimeko zokutshaja ngokukhawuleza okanye ubushushu obuphantsi, ii-ion ze-lithium zinokukhawuleza phezu kobume be-lithium. I-Dendritic lithium iya kugqobhoza i-diaphragm kwaye ibangele ukulahleka kwesibini, ukunciphisa umthamo webhetri. Xa i-lithium crystal ifikelela kwisixa esithile, iya kukhula isuka kwi-electrode engalunganga ukuya kwi-diaphragm, ibangele ingozi yebhetri emfutshane.
3. Ukutshaja okukhawulezayo rhoqo kuya kunciphisa ubomi bebhetri
Ukutshaja rhoqo nako kuthanda ukukhawulezisa ukuphela kobomi bebhetri, kwaye kude kukhokhelele kwiingxaki ezifana nokucutha ukusebenza kwebhetri kunye nobomi obufutshane bebhetri. Ngokukodwa emva kokongezwa kweteknoloji yokutshaja ngokukhawuleza, nangona isantya sokutshaja kwisigaba sokuqala sikhawuleza kakhulu, kodwa asizange sihlawule ukuya kwi-100% kwi-unplugging, okubangele ukutshaja okuninzi, ukwandisa inani lemijikelo yebhetri, ukusetyenziswa kwexesha elide ngale ndlela kuya kunciphisa umsebenzi webhetri, ngaloo ndlela kukhawulezisa ukuguga kwebhetri.
Ubushushu obuphezulu bungumbulali omkhulu we-lithium ukuguga kwebhetri, ukutshaja ngokukhawuleza kwamandla aphezulu kuya kwenza ibhetri ngexesha elifutshane lokutshisa, ukungahlawulisi ngokukhawuleza nangona amandla aphantsi, ukushisa okuphantsi kwiyunithi yexesha, kodwa kufuna ixesha elide lamandla-ngexesha. Ngale ndlela ubushushu bebhetri buya kuqokelelana ekuhambeni kwexesha, kwaye umahluko kubushushu obuveliswa ngexesha lokutshaja akwanelanga ukubangela umahluko kwisantya sokuguga kwebhetri.
Ukushwankathela oku ngasentla, sinokugqiba ukuba ukutshaja ngokukhawuleza kuneemfuno zomgangatho ophezulu webhetri, kunokulahlekelwa okukhulu kobomi bebhetri, kwaye ukhuseleko luya kuncitshiswa kakhulu, ngoko zama ukuyenza kancinci kangangoko xa kungekho mfuneko. Ukutshaja ngokukhawuleza okukhawulezileyo kwebhetri kuya kubangela ingozi kwibhetri, kodwa ngenxa yomahluko wokuxinana kweeseli zebhetri, izixhobo zokusebenza, ubushushu obuthile kunye nenkqubo yokulawula ibhetri, ibhetri inengxaki yokwenzakala ngexesha lokutshaja ngokukhawuleza.
Ixesha lokuposa: Oct-26-2023