Inqubo yokukhiqiza ibhethri ye-lithium: inqubo yokubuyela emuva

Ngaphambilini, sethule inqubo yangaphambili neyesigaba esimaphakathi yokukhiqiza ibhethri ye-lithium ngokuningiliziwe. Lesi sihloko sizoqhubeka nokwethula inqubo ye-back-end.

Umgomo wokukhiqiza wenqubo yokubuyela emuva ukuqedela ukwakheka nokupakishwa kwebhethri ye-lithium-ion. Enqubweni yesigaba esimaphakathi, isakhiwo sokusebenza seseli senziwe, futhi lawa maseli adinga ukwenziwa asebenze enqubweni yakamuva. Inqubo eyinhloko ezigabeni zakamuva ihlanganisa: kugobolondo, ukubhaka nge-vacuum (ukoma kwe-vacuum), umjovo we-electrolyte, ukuguga, nokwakheka.

Iinto shell

Isho ukupakisha iseli eliqediwe egobolondweni le-aluminium ukuze kube lula ukungezwa kwe-electrolyte nokuvikela isakhiwo seseli.

I-vacuum baking (i-vacuum drying)

Njengoba kwaziwa kubo bonke, amanzi ayabulala amabhethri e-lithium. Lokhu kungenxa yokuthi lapho amanzi ehlangana ne-electrolyte, i-hydrofluoric acid izokwakhiwa, engabangela umonakalo omkhulu ebhethri, futhi igesi ekhiqizwayo izobangela ukuba ibhethri iqhume. Ngakho-ke, amanzi angaphakathi kweseli yebhethri ye-lithium-ion adinga ukususwa endaweni yokusebenzela ngaphambi komjovo we-electrolyte ukugwema ukuthikameza ikhwalithi yebhethri ye-lithium-ion.

Ukubhaka i-vacuum kufaka ukugcwaliswa kwe-nitrogen, ukuhlanza, nokushisa okuphezulu. Ukugcwaliswa kwe-nitrogen ukufaka esikhundleni somoya futhi kuphule i-vacuum (ukucindezela okungalungile kwesikhathi eside kuzolimaza okokusebenza kanye nebhethri. Ukugcwaliswa kwe-nitrogen kwenza umfutho womoya wangaphakathi nangaphandle ulingane ngokulingana) ukuze kuthuthukiswe ukuqhutshwa kwe-thermal nokuvumela amanzi ukuba ahwamuke kangcono. Ngemuva kwale nqubo, umswakama webhethri ye-lithium-ion uvivinywa, futhi inqubo elandelayo ingaqhutshekwa kuphela ngemva kokuba lawa maseli ephumelele ukuhlolwa.

Umjovo we-Electrolyte

Umjovo usho inqubo yokujova i-electrolyte ebhethrini ngokuhambisana nenani elidingekayo ngembobo yomjovo egodliwe. Ihlukaniswe ngomjovo wokuqala kanye nomjovo wesibili.

Ukuguga

Ukuguga kubhekisela ekubekeni ngemva kokukhokhiswa kokuqala kanye nokwakheka, okungahlukaniswa ngokuguga okujwayelekile kwezinga lokushisa kanye nokuguga okuphezulu kwezinga lokushisa. Inqubo yenzelwa ukwenza izakhiwo nokwakheka kwefilimu ye-SEI okwakheke ngemva kokushajwa kokuqala kanye nokwakheka kuzinze kakhudlwana, okuqinisekisa ukuzinza kwe-electrochemical kwebhethri.

Formation

Ibhethri licushwa ngokushajwa kokuqala. Phakathi nenqubo, ifilimu ye-passive esebenzayo (ifilimu ye-SEI) yenziwa ebusweni be-electrode engalungile ukuze kuzuzwe "ukuqaliswa" kwebhethri ye-lithium.

Ukugreda

Ukugreda, okungukuthi, “ukuhlaziywa kwekhono”, ukushaja nokukhipha amaseli ngemva kokwakheka ngokuvumelana nezindinganiso zokuklama ukuze kuhlolwe umthamo kagesi wamaseli bese ehlelwa ngokwamandla awo.

Kuyo yonke inqubo yokubuyela emuva, ukubhaka i-vacuum kubaluleke kakhulu. Amanzi "ayisitha semvelo" sebhethri ye-lithium-ion futhi ahlobene ngokuqondile nekhwalithi yawo. Ukuthuthukiswa kobuchwepheshe bokumisa i-vacuum kuye kwaxazulula le nkinga ngempumelelo.

Dacheng ukunemba vacuum drying uchungechunge umkhiqizo

Ulayini wemikhiqizo yokomisa nge-vacuum wokunemba kwe-Dacheng unochungechunge lwemikhiqizo emithathu emikhulu: i-vacuum baking tunnel oven, i-vacuum baking monomer oven, kanye ne-ovini yokuguga. Ziye zasetshenziswa abakhiqizi bebhethri be-lithium abaphezulu embonini, bethola ukudumisa okuphezulu kanye nempendulo enhle.

I-Dacheng Precision ineqembu labasebenzi abangochwepheshe be-R&D abanezinga eliphezulu lobuchwepheshe, ikhono elihle lokusungula izinto ezintsha nolwazi olucebile. Mayelana nobuchwepheshe bokumisa i-vacuum, i-Dacheng Precision ithuthukise uchungechunge lobuchwepheshe obuyisisekelo obuhlanganisa ubuchwepheshe bokuhlanganiswa kwe-multi-layer fixture, amasistimu okulawula izinga lokushisa, kanye nezimoto ezilayishayo ezijikelezayo ezithumela amasistimu e-vacuum baking oven, nezinzuzo zayo eziyinhloko zokuncintisana.