Iithebhu kwiPouch Lithium-Ion Iibhetri: Isishwankathelo esipheleleyo

Iithebhu zizinto ezibalulekileyo kwiibhetri ze-lithium-ion zengxowa, zisebenza njengeebhulorho zokuhambisa phakathi kwee-electrode zangaphakathi zebhetri kunye neesekethe zangaphandle. Ngaphezu nje kwezihlanganisi ezilula, zidlala indima ebalulekileyo ekuqinisekiseni ukhuseleko lwebhetri, ukusebenza kokutywina, kunye nokusebenza kakuhle ngokubanzi. Eli nqaku liphonononga iintlobo, izixhobo, iimpawu zokusebenza, kunye nokusetyenziswa kwezi zinto zibalulekileyo, linika ulwazi olusebenzayo kubavelisi kunye neenjineli.

Zithini iiBhetri?

Embindini wazo, ii-battery tabs zizakhiwo ezidityanisiweyo eziqulathe iindawo ezimbini ezibalulekileyo: i-metal strip kunye ne-plastic film (i-tab glue). I-metal strip isebenza njengomqhubi, idlulisela umbane phakathi kwee-electrodes ezilungileyo/ezingalunganga zebhetri kunye nezixhobo zangaphandle. I-plastic film, okwangoku, inika isitywino sokuthintela ukuvuza kwe-electrolyte kwaye ikhusela i-metal strip kwi-short circuits.

1. Iithebhu ezilungileyozihlala zenziwe nge-aluminium (Al) ngenxa yokuba zisebenza kakuhle kakhulu kwaye zixhathisa ukugqwala.
2. Iithebhu ezingalungangasebenzisa i-nickel (Ni) okanye i-nickel-plated copper (Ni-Cu). Ii-nickel tabs zixhaphakile kwizixhobo ezincinci zedijithali, ngelixa ii-nickel-plated copper tabs—ezixabisa amandla azo aphezulu okuthwala umbane—zikhethwa kakhulu kwiibhetri zamandla kunye nezicelo ezikumgangatho ophezulu.

Ulwahlulo lweeThebhu

Iithebhu zahlulwe ngokwezinto ezisetyenziswayo, uhlobo lokuncamathelisa, kunye nokupakishwa, nganye ifanelekile kwiimeko ezithile zokusetyenziswa:

1. Ngezinto zeMetal Strip

1. Iithebhu ze-aluminium (Al): Isetyenziswa kakhulu kwii-electrode ezilungileyo. Zingasebenza njengee-electrode ezingalunganga kwiibhetri ezinee-anode ze-lithium titanate.
2. Iithebhu zeNickel (Ni): Ifumaneka kuphela kwii-electrode ezingalunganga kwizixhobo ezisebenzisa amandla aphantsi njengee-smartphones, iitablets, kunye neebhanki zamandla.
3. I-nickel-plated copper (Ni-Cu) iithebhu: Yenzelwe ii-electrode ezingalunganga kwiibhetri zamandla (umz., izithuthi zombane) kunye neebhetri ezikumgangatho ophezulu, zidibanisa ukuhanjiswa kwekhopha kunye nokumelana nokugqwala kwe-nickel.

2. Uhlobo lwe-Adhesive yeTab

Iimarike zasekhaya zahlulahlula izinto zokuncamathelisa iithebhu ngombala, zibonisa umahluko kumgangatho kunye nokusetyenziswa:

1. Iithebhu ezincamathelayo ezimnyama: Isetyenziswa kwiibhetri zedijithali ezisezantsi ukuya kweziphakathi. Ulwakhiwo lwazo (isiseko sefilimu ye-PEN esineengqimba ze-PP eziguquliweyo) lunomngcipheko wokuqhekeka ngokuhamba kwexesha.
2. Iithebhu ezincamathelayo ezimthubi: Ixhaphakile kwiibhetri zamandla eziphakathi. Nangona kulula ukuzivala, umbindi wazo ongalukwanga unokufunxa umswakama, nto leyo ekhokelela ekudumbeni kwebhetri.
3. Iithebhu ezincamathelayo ezimhlophe: Zikhethwa kakhulu kwizixhobo zedijithali eziphezulu, iibhetri zamandla, kunye neebhetri ezikumgangatho ophezulu. Zifumaneka kwiidizayini zodwa, ezintathu, okanye ezintlanu, izincamathelisi ezimhlophe ezinamaleko amathathu (ezinee-PP cores) zibonelela ngokutywinwa okungcono kwaye azinamngcipheko wokuqhekeka.
4. Iithebhu eziqengqekileyo: Imicu eqhubekekayo ibotshelelwe ibe yimiqulu, ilungele imigca yemveliso ezenzekelayo.
5. Iithebhu zamaphepha: Iithebhu ngazinye zibekwe phakathi kwamaphepha eplastiki, zilungele iinkqubo ezenziwe ngesandla okanye ezizenzekelayo.

3. Ngokupakishwa

1. Iithebhu eziqengqekileyo: Imicu eqhubekekayo ibotshelelwe ibe yimiqulu, ilungele imigca yemveliso ezenzekelayo.
2. Iithebhu zamaphepha: Iithebhu ngazinye zibekwe phakathi kwamaphepha eplastiki, zilungele iinkqubo ezenziwe ngesandla okanye ezizenzekelayo.

Izixhobo eziphambili kunye nokusebenza

Ukusebenza kweethebhu kuxhomekeke kakhulu kwizinto ezisetyenziswa kuzo:

1. Imicu yesinyithi: I-Aluminiyam (i-AL1050 alloy) kunye ne-copper (i-TU1 oxygen-free copper) zithandwa kakhulu ngenxa yokuqhuba kwazo, ukuguquguquka kwazo, kunye nokumelana nokugqwala. I-nickel plating kwi-copper strips ithintela i-oxidation kwaye iphucula ukunyibilika kwayo.
2. Izincamathelisi zetabhu: Uninzi lwezincamathelisi zingeniswa zivela eJapan, njengoko izixhobo zePP zasekhaya zisokola ukuhlangabezana neemfuno ezingqongqo zobunzima bemolekyuli. Izincamathelisi ezisemgangathweni ophezulu (umz., izincamathelisi ezimhlophe ezinamaleko amathathu) zilungelelanisa ukumelana nobushushu (inqanaba lokunyibilika ~147°C) kunye nokuguquguquka, okuqinisekisa ukutywinwa okuthembekileyo ngeefilimu zeplastiki ze-aluminium.

Ukuvelisa kunye noLawulo loMgangatho

Ukuvelisa iithebhu ezisebenza kakuhle kufuna ukuchaneka:

1. Iinkqubo zokuplata: Iithebhu zobhedu ezifakwe i-nickel zisebenzisa i-electroplating (ubukhulu obuyi-1.8±0.3μm) okanye i-electroless plating (ubukhulu obuyi-1.0±0.3μm) ukuqinisekisa ukugqunywa okufanayo.
2. Ukusika imiphetho: Imicu yesinyithi etyebileyo kune-0.2mm ifuna ukuchetywa komphetho ukuze kuthintelwe iingxaki zokugquma kunye neengozi zokuvuza.
3. Uvavanyo oluqatha:
   1. Uvavanyo lokuntywiliselwa nge-electrolyte: Iithebhu mazigcine amandla okutywina >15N/15mm emva kweeyure ezingama-24 kwi-85°C.
   2. Uvavanyo lokugoba: Iithebhu mazimelane nokugoba oku-5–7 (kuxhomekeke kubukhulu) ukuqinisekisa ukuqina kwiindawo ezingcangcazelayo (umz., izithuthi zombane).

Iindlela zoQhagamshelo lweThebhu

Ukudibanisa iithebhu kwiisekethe zangaphandle kubandakanya iindlela ezahlukeneyo:

1. Ukubopha ngoomatshini: Ukubhoboza kunye nokukrufula kunika uqhagamshelo olungabizi kakhulu noluqinileyo kodwa kufuna ulawulo lobukhulu olucokisekileyo.
2. Ukutywina: I-solder ye-M51 enobushushu obuphantsi isebenza kwiintsimbi ezahlukeneyo (umz., ubhedu kunye ne-aluminium) kodwa ibiza kakhulu.
3. Ukuwelda nge-ultrasonic: Indlela ekhethwayo yeebhetri zamandla, kusetyenziswa ukungcangcazela okuphindaphindekayo ukubopha ii-tab foils ezincinci (0.01mm) ngaphandle kobushushu obugqithisileyo.

Isiphelo

Iithebhu zisenokuba zincinci, kodwa uyilo lwazo kunye nomgangatho wazo zichaphazela ngokuthe ngqo ukusebenza kwebhetri yesingxobo. Njengoko imfuno ikhula yeebhetri ezikhuselekileyo nezisebenzayo ngakumbi kwizithuthi zombane kunye nokugcinwa kwamandla, ukuphuculwa kwezinto zethebhu (umz., izincamathelisi ezininzi) kunye nokuveliswa (umz., ukuplatwa ngokuchanekileyo) kuya kuhlala kubalulekile. Ukuqonda iimpawu zethebhu kubalulekile ekuphuculeni ukuthembeka kwebhetri kunye nobude bayo kwizicelo ezahlukeneyo.