Poukisa nouvo enèji elektrik itilize pil 18650
Batri 18650 se yon batri ityòm -yon bonè, ki gen matirite ak ki estab, ki lajman itilize nan pwodwi elektwonik. Pandan ane yo, manifaktirè Japonè yo te akimile yon anpil nan eksperyans ki enpòtan nan pwosesis la nan pwodwi 18650 pil, se konsa ke konsistans nan ak sekirite nan 18650 pil yo pwodwi te rive nan yon nivo segondè.
Kontrèman, pil kaskad ityòm-ion yo lwen ki gen matirite, pil kare komen, pil pake mou, menm si gwosè, gwosè, ak pozisyon nan onglè yo pa inifòm, pwosesis pwodiksyon an nan manifaktirè batri pa ka satisfè a. kondisyon yo, ak pi fò nan kontwòl la manyèl, Konsistans batri a se ke batri a se pa nan nivo a nan 18650. Jere yon gwo kantite selil nan seri ak paralèl pa pral pèmèt chak selil fè pi byen si konsistans nan selil yo se pa jiska par, ak selil 18650 la ka rezoud pwoblèm sa a.
To sum up, the 18650 battery has a small capacity and a large number of cells (7104 for the S type), but the consistency is good. Cascade cells can be increased (20ah 60ah), and the number of cells can be decreased, but the consistency is poor. In contrast, it is very difficult to invest a lot of manpower and material resources with battery suppliers to improve the production process of cascaded batteries. So when it comes to developing the Roadster and Model S, Tesla's only option is to buy batteries from the market and develop its own battery system. The technical challenge of developing a battery system that manages more than 6,000 units with good consistency should be less than that of more than 200 units with poor consistency. Even if the number of individual batteries increases, it will be easier to manage if they perform reliably.
