CURVED BATTERY AND MANUFACTURING METHOD THEREOF

摘要

A curved battery and manufacturing method thereof, includes the following steps: electroplating an electrode sheet, rolling said electrode sheet along its long side, first sealing, heating, pouring in electrolyte fluid, charging, vacuuming, second sealing, and shaping. Wherein, the electrode sheet is of a long strip shape, with its outside wrapped with separation film, to separate the positive electrode and negative electrode. While perform rolling, it is performed along its long side, to remove the stress that may occur after the product is produced. Then, sealing is performed by using films made of water resistant and heat resistant material for sealing at least three side edges. Pour in electrolyte fluid of LiPF6 in an overall temperature of 75 degrees. Afterwards, charging the electrolyte fluid, perform vacuuming, and perform second sealing. Finally, using heated tools to bend the half-finished battery into shape, to form a curved battery having uniform curvature.

主权项

1. A curved battery manufacturing method, comprising the following steps:
providing a strip-shape electrode sheet, which has two portions selected respectively as a positive portion and a negative portion, wherein a surface of said positive portion is applied with an anode coating, while surface of said negative portion is applied with a cathode coating, then a separation film is used to wrap said entire coated electrode sheet, rolling said electrode sheet having separation film wrapped around along its long edge, so that a positive tab lead and a negative tab lead at the outermost ends of said electrode sheet, are on the outermost layer of roll body; after rolling, said rolled electrode sheet is provided with three open side edges, including one side edge having said positive tab lead and said negative tab lead, and two side edges adjacent to said side edges, perform first sealing for said positive tab lead and said negative tab lead; performing heating for the sack having three side edges sealed; pouring in electrolyte fluid into the dried sack, and perform charging for said electrolyte fluid; reopening said sealed side edge not having said positive tab lead and said negative tab lead; performing vacuuming to remove excessive gas in said sack by means of negative pressure; performing second sealing for opened side edge; and bending said long-strip sack into an arc shape of uniform curvature.