| 摘要 |
In an aspect, a battery cell includes a stack that contains at least one anode and at least one cathode, a pouch containing the stack and electrolyte, and anode and cathode terminals. The pouch includes first and second films, each including a metallic main barrier layer and a sealing layer. The main barrier layer substantially prevents passage of oxygen and moisture therethrough. The sealing layer is inboard of the main barrier layer and protects it from exposure to the electrolyte. The pouch includes a flange containing a seal region in which the sealing layers from the first and second films are fixedly joined together to form a common sealing layer to seal the cavity. The thickness of the common sealing layer at a point spaced distally from a proximal end of the seal region is smaller than the thickness of the common sealing layer at the proximal end. |
