3. Ubuchwepheshe bokuphepha
Nakuba amabhethri e-lithium ion anezingozi eziningi ezifihliwe, ngaphansi kwezimo ezithile zokusetshenziswa nangezinyathelo ezithile, angakwazi ukulawula ngempumelelo ukuvela kokusabela okuseceleni nokusabela okunobudlova kumaseli ebhethri ukuze aqinisekise ukusetshenziswa kwawo okuphephile.Okulandelayo isingeniso esifushane sobuchwepheshe bokuphepha obuningi obuvame ukusetshenziswa kumabhethri e-lithium ion.
(1) Khetha izinto zokusetshenziswa ezinesici sokuphepha esiphezulu
Izinto ezisebenzayo ze-polar nezingezinhle, i-diaphragm kanye nama-electrolyte anesici sokuphepha esiphezulu kuzokhethwa.
a) Ukukhethwa kwezinto ezinhle
Ukuphepha kwezinto ze-cathode kusekelwe ikakhulukazi kulezi zici ezintathu ezilandelayo:
1. Ukuzinza kwe-Thermodynamic yezinto zokwakha;
2. Ukuzinza kwamakhemikhali kwezinto;
3. Izakhiwo ezibonakalayo zezinto zokwakha.
b) Ukukhethwa kwezinto ezibonakalayo ze-diaphragm
Umsebenzi oyinhloko we-diaphragm ukuhlukanisa ama-electrode alungile noma angalungile ebhethri, ukuvimbela ukujikeleza okufushane okubangelwa ukuthintana phakathi kwama-electrode aqondile nama-negative, kanye nokwenza ama-ion e-electrolyte adlule, okungukuthi, inokufakwa kwe-electronic kanye ne-ion. conductivity.Amaphuzu alandelayo kufanele aqashelwe lapho kukhethwa i-diaphragm yamabhethri e-lithium ion:
1. Ine-insulation ye-elekthronikhi yokuqinisekisa ukuhlukaniswa kwemishini kwama-electrode aqondile noma angalungile;
2. Ine-aperture ethile kanye ne-porosity yokuqinisekisa ukumelana okuphansi kanye ne-ionic conductivity ephezulu;
3. Impahla ye-diaphragm izoba nokuzinza okwanele kwamakhemikhali futhi kumele imelane nokugqwala kwe-electrolyte;
4. I-diaphragm izoba nomsebenzi wokuvikela ukuvala shaqa okuzenzakalelayo;
5. Ukuncipha okushisayo kanye nokuguqulwa kwe-diaphragm kuyoba kuncane ngangokunokwenzeka;
6. I-diaphragm izoba nogqinsi oluthile;
7. I-diaphragm izoba namandla aqinile ngokomzimba kanye nokumelana nokubhoboza okwanele.
c) Ukukhethwa kwe-electrolyte
I-Electrolyte iyingxenye ebalulekile yebhethri ye-lithium ion, edlala indima yokudlulisa nokuqhuba ukusebenza kwamanje phakathi kwama-electrode aqondile noma angalungile ebhethri.I-electrolyte esetshenziswa kumabhethri e-lithium ion iyisisombululo se-electrolyte esakhiwe ngokuncibilikisa usawoti we-lithium ofanele kuma-organic aprotic mix solvents.Ngokuvamile izohlangabezana nezidingo ezilandelayo:
1. Ukuzinza okuhle kwamakhemikhali, akukho ukusabela kwamakhemikhali nge-electrode esebenzayo into, uketshezi lokuqoqa kanye ne-diaphragm;
2. Ukuzinza okuhle kwe-electrochemical, enefasitela elibanzi le-electrochemical;
3. I-lithium ion conductivity ephezulu kanye ne-electronic conductivity ephansi;
4. Ibanga elibanzi lokushisa kwamanzi;
5. Iphephile, ayinabo ubuthi futhi ayihambisani nemvelo.
(2) Qinisa idizayini yokuphepha iyonke yeseli
Iseli yebhethri iyisixhumanisi esihlanganisa izinto ezihlukahlukene zebhethri, kanye nokuhlanganiswa kwesigxobo esihle, isigxobo esinegethivu, i-diaphragm, i-lug nefilimu yokupakisha.Ukuklanywa kwesakhiwo seseli akuthinti kuphela ukusebenza kwezinto ezihlukahlukene, kodwa futhi kunomthelela obalulekile ekusebenzeni okuphelele kwe-electrochemical nokusebenza kokuphepha kwebhethri.Ukukhethwa kwezinto kanye nokwakheka kwesakhiwo esiwumongo kuwuhlobo nje lobudlelwano phakathi kwendawo kanye nayo yonke.Ekwakhiweni komgogodla, imodi yesakhiwo enengqondo kufanele yenziwe ngokuya nezici ezibonakalayo.
Ngaphezu kwalokho, amanye amadivaysi okuvikela angeziwe angacatshangelwa isakhiwo sebhethri ye-lithium.Izindlela zokuvikela ezijwayelekile yilezi:
a) Isici sokushintsha siyamukelwa.Uma izinga lokushisa ngaphakathi kwebhethri likhuphuka, inani layo lokumelana lizokhuphuka ngokufanele.Uma izinga lokushisa liphezulu kakhulu, ukunikezwa kwamandla kuzomiswa ngokuzenzakalelayo;
b) Setha ivalvu yokuphepha (okungukuthi, imbobo yomoya phezulu ebhethrini).Uma umfutho wangaphakathi webhethri ukhuphukela enanini elithile, ivalvu yokuphepha izovuleka ngokuzenzakalelayo ukuze kuqinisekiswe ukuphepha kwebhethri.
Nazi ezinye izibonelo zedizayini yokuphepha yesakhiwo esiwumgogodla kagesi:
1. Isilinganiso esihle nesibi somthamo wezigxobo kanye nocezu lukasayizi womklamo
Khetha isilinganiso esifanele somthamo wama-electrode aqondile noma angalungile ngokuya ngezici zezinto ezinhle nezingezinhle zama-electrode.Isilinganiso somthamo we-electrode omuhle noma omubi weseli iyisixhumanisi esibalulekile esihlobene nokuphepha kwamabhethri e-lithium ion.Uma umthamo we-electrode omuhle mkhulu kakhulu, i-lithium yensimbi izofaka phezu kwe-electrode engalungile, kanti uma umthamo we-electrode ongemuhle mkhulu kakhulu, umthamo webhethri uzolahleka kakhulu.Ngokuvamile, N/P=1.05-1.15, futhi ukukhetha okufanele kuzokwenziwa ngokuya ngomthamo wangempela webhethri kanye nezidingo zokuphepha.Izingcezu ezinkulu nezincane zizoklanywa ukuze indawo yokunamathisela okungekuhle (into esebenzayo) ivale (idlule) indawo yokunamathisela okuhle.Ngokuvamile, ububanzi buzoba ngu-1 ~ 5 mm mkhulu futhi ubude bube ngu-5 ~ 10 mm omkhulu.
2. Imvume yobubanzi be-diaphragm
Umgomo ojwayelekile womklamo wobubanzi be-diaphragm ukuvimbela ukujikeleza okufushane kwangaphakathi okubangelwa ukuthintana okuqondile phakathi kwama-electrode aqondile noma angalungile.Njengoba ukuncipha okushisayo kwe-diaphragm kubangela ukuwohloka kwe-diaphragm kubude nobubanzi besiqondiso ngesikhathi sokushaja nokukhipha ibhethri nangaphansi kokushaqeka okushisayo nezinye izindawo, ukuhlukaniswa kwendawo egoqiwe ye-diaphragm kuyanda ngenxa yokwanda kwebanga phakathi kokupholisa. kanye nama-electrode angalungile;Amathuba we-micro short circuit endaweni yokwelula ye-diaphragm ayanda ngenxa yokuncipha kwe-diaphragm;Ukuncipha emaphethelweni e-diaphragm kungase kuholele ekuxhumaneni okuqondile phakathi kwama-electrode aphozithivu nenegethivu kanye nesifunda esifushane sangaphakathi, okungase kubangele ingozi ngenxa yokushisa kwebhethri.Ngakho-ke, lapho uklama ibhethri, izici zayo zokuncipha kufanele zicatshangelwe ekusetshenzisweni kwendawo nobubanzi be-diaphragm.Ifilimu yokuhlukanisa kufanele ibe nkulu kune-anode ne-cathode.Ngaphezu kwephutha lenqubo, ifilimu yokuhlukanisa kufanele okungenani ibe yinde ngo-0.1mm kunohlangothi lwangaphandle lwesiqephu se-electrode.
3.Ukwelashwa kwe-insulation
Isifunda esifushane sangaphakathi siyisici esibalulekile engozini yokuphepha engaba khona yebhethri ye-lithium-ion.Kunezingxenye eziningi ezingaba yingozi ezibangela ukujikeleza okufushane kwangaphakathi ekwakhiweni kwesakhiwo seseli.Ngakho-ke, izinyathelo ezidingekayo noma ukwahlukanisa kufanele kusethwe kulezi zindawo ezibalulekile ukuvimbela ukujikeleza okufushane kwangaphakathi kwebhethri ngaphansi kwezimo ezingavamile, njengokugcina isikhala esidingekayo phakathi kwezindlebe ze-electrode ezivumayo nezingezinhle;Itheyiphu yokuvikela izonameka endaweni enganamathiseli maphakathi nendawo eyodwa, futhi zonke izingxenye eziveziwe zizombozwa;Itheyiphu yokuvikela izonamathiselwa phakathi kwefoyili ye-aluminium evumayo kanye nento esebenzayo engasebenzi;Ingxenye ye-welding ye-lug izombozwa ngokuphelele nge-tape yokuvikela;I-tape yokuvikela isetshenziswa phezulu kwengqikithi kagesi.
4. Ukusetha i-valve yokuphepha (idivayisi yokusiza ingcindezi)
Amabhethri e-lithium ion ayingozi, ngokuvamile ngenxa yokuthi izinga lokushisa langaphakathi liphezulu kakhulu noma ukucindezela kuphezulu kakhulu ukuze kubangele ukuqhuma nomlilo;Idivayisi enengqondo yokukhulula ingcindezi ingakhulula ngokushesha ukucindezela nokushisa ngaphakathi kwebhethri uma kuba sengozini, futhi yehlise ingcuphe yokuqhuma.Umshini ozwakalayo wokukhulula ukucindezela ngeke uhlangabezane nokucindezela kwangaphakathi kwebhethri kuphela ngesikhathi sokusebenza okuvamile, kodwa futhi uzovuleka ngokuzenzakalelayo ukukhulula ukucindezela lapho umfutho wangaphakathi ufinyelela umkhawulo wengozi.Indawo yokusetha idivayisi yokukhulula ingcindezi izoklanywa ngokucabangela izici zokuguga zegobolondo lebhethri ngenxa yokwanda kokucindezela kwangaphakathi;Ukwakhiwa kwe-valve yokuphepha kungenziwa ngama-flakes, imiphetho, i-seams kanye nama-nick.
(3) Thuthukisa izinga lenqubo
Imizamo kufanele yenziwe ukuze kumiswe futhi kumiswe inqubo yokukhiqiza yeseli.Ezinyathelweni zokuxuba, ukumboza, ukubhaka, ukuminyanisa, ukusika nokusonta, ukwenza ukumisa (njengobubanzi be-diaphragm, umthamo womjovo we-electrolyte, njll.), thuthukisa izindlela zenqubo (njengendlela yomjovo wengcindezi ephansi, indlela yokupakisha ye-centrifugal, njll.) , yenza umsebenzi omuhle ekulawuleni inqubo, uqinisekise ikhwalithi yenqubo, futhi unciphise umehluko phakathi kwemikhiqizo;Setha izinyathelo zomsebenzi okhethekile ezinyathelweni ezibalulekile ezithinta ukuphepha (njengokukhipha ucezu lwe-electrode, ukushanela impushana, izindlela zokushisela ezihlukene zezinto ezihlukene, njll.), sebenzisa ukuqapha kwekhwalithi okujwayelekile, ukuqeda izingxenye ezinokukhubazeka, nokuqeda imikhiqizo enesici (njengokonakala ucezu lwe-electrode, ukubhoboza i-diaphragm, izinto ezisebenzayo eziwayo, ukuvuza kwe-electrolyte, njll.);Gcina isiza sokukhiqiza sihlanzekile futhi sicocekile, sebenzisa ukuphathwa kwe-5S kanye nokulawula ikhwalithi engu-6-sigma, vimbela ukungcola nomswakama ekuhlanganiseni ekukhiqizeni, futhi unciphise umthelela wezingozi ekukhiqizeni kwezokuphepha.
Isikhathi sokuthumela: Nov-16-2022