Nkag siab txog Kev Txhaum Txhaum Cai ntawm Polymer Lithium-Ion Roj Teeb

Raws li hom electrolyte siv, lithium-ion roj teeb tau muab faib ua kua lithium-ion roj teeb (LIB) thiab polymer lithium-ion roj teeb (PLB), tseem hu ua roj teeb lithium-ion.

PLBs siv tib yam anode thiab cathode cov ntaub ntawv ua kua lithium-ion roj teeb, suav nrog lithium cobalt oxide, lithium manganese oxide, cov ntaub ntawv ternary, thiab lithium hlau phosphate rau cathode, thiab graphite rau anode. Thawj qhov sib txawv yog nyob rau hauv cov electrolyte siv: PLBs hloov cov kua electrolyte nrog cov khoom polymer electrolyte, uas tuaj yeem yog "qhuav" lossis "gel-zoo li." Feem ntau PLBs tam sim no siv cov polymer gel electrolyte.

Tam sim no, cov lus nug tshwm sim: puas polymer lithium-ion roj teeb puas tawg? Muab lawv qhov me me thiab lub teeb yuag, PLBs tau siv dav hauv laptops, smartphones, thiab lwm yam khoom siv hluav taws xob. Nrog cov cuab yeej no feem ntau nqa ncig, lawv txoj kev nyab xeeb yog qhov tseem ceeb. Yog li, qhov kev nyab xeeb ntawm PLBs puas ntseeg tau, thiab lawv puas ua rau muaj kev pheej hmoo ntawm kev tawg?

1. PLBs siv cov gel zoo li electrolyte, txawv ntawm cov kua electrolyte hauv lithium-ion roj teeb. Cov gel-zoo li electrolyte no tsis boil los yog tsim cov roj ntau, yog li tshem tawm qhov ua rau muaj kev kub ntxhov.
2. Cov roj teeb lithium feem ntau tuaj nrog lub rooj tiv thaiv kev tiv thaiv thiab kev tiv thaiv tawg rau kev nyab xeeb. Txawm li cas los xij, lawv qhov kev ua tau zoo tuaj yeem raug txwv hauv ntau qhov xwm txheej.
3. PLBs siv txhuas yas hloov tau yooj yim ntim, as opposed to the metal casing of liquid cells. Thaum muaj teeb meem kev nyab xeeb, lawv nyiam o ntau dua li tawg.
4. PVDF, raws li cov khoom siv rau PLBs, ua tau zoo heev.

Kev Tiv Thaiv Kev Nyab Xeeb rau PLBs:

• Short Circuit: Ua los ntawm cov khoom siv sab hauv lossis sab nraud, feem ntau thaum them nyiaj. Kev sib raug zoo ntawm cov roj teeb tsis zoo tuaj yeem ua rau luv luv Circuit Court. Txawm hais tias feem ntau cov roj teeb lithium-ion tuaj nrog kev tiv thaiv hluav taws xob thiab cov kab hluav taws xob tiv thaiv, cov no yuav tsis zoo ib yam.
• Kev them nyiaj ntau dhau: Yog tias PLB raug them nrog lub zog hluav taws xob ntev dhau lawm, nws tuaj yeem ua rau sab hauv overheating thiab siab build-up, ua rau nthuav thiab rupture. Overcharging thiab sib sib zog nqus tawm tuaj yeem ua rau tsis zoo rau lub roj teeb cov tshuaj muaj pes tsawg leeg, cuam tshuam rau nws txoj sia.

Lithium reactive heev thiab tuaj yeem ntes hluav taws. Thaum lub sij hawm them nyiaj thiab tso tawm, cov cua kub tsis tu ncua ntawm lub roj teeb thiab kev nthuav dav ntawm cov roj hluav taws xob uas tsim tawm tuaj yeem ua rau lub siab sab hauv. Yog tias lub casing puas lawm, nws tuaj yeem ua rau tawg, hluav taws kub, lossis tawg. Txawm li cas los xij, PLBs feem ntau yuav o ntau dua li tawg.

Qhov zoo ntawm PLBs:

1. High ua hauj lwm voltage ib cell.
2. Loj muaj peev xwm ceev.
3. Tsawg tus kheej tawm.
4. Lub neej voj voog ntev, ntau tshaj 500 lub voj voog.
5. Tsis nco qab.
6. Kev nyab xeeb kev ua tau zoo, siv aluminium yas hloov tau yooj yim ntim.
7. Ultra-nyias, tuaj yeem haum rau hauv credit card-qhov loj me.
8. Lub teeb yuag: Tsis xav tau cov hlau casing.
9. Lub peev xwm loj dua piv rau cov roj teeb lithium sib npaug.
10. Tsawg sab hauv tsis kam.
11. Cov yam ntxwv zoo tshaj tawm.
12. Simplified tiv thaiv board tsim.

Disadvantages ntawm PLBs:

1. Tus nqi ntau lawm.
2. Xav tau kev tiv thaiv Circuit Court.