Patent ID: 8431265

Claim:
A battery comprising: (a) a power generating element comprising oppositely facing first and second major surfaces; (b) electrodes associated with the power generating element; (c) first and second insulative adhesion layers, each of the first and second insulative adhesion layers including a support layer with a double-sided adhesive tape formed on oppositely facing sides of the support layer; and (d) a film exterior member made of a laminated film and formed by upper and lower members, wherein, (i) the electrodes, the first insulative adhesion layer and the second insulative adhesion layer are entirely enclosed within the film exterior member, with tab portions extending from the electrodes exposed outside of said film exterior member, (ii) the insulative adhesion layers are interposed between the power generating element and the film exterior member, (iii) the first insulative adhesion layer is between the first major surface and the film exterior member, (iv) the second insulative adhesion layer is between the second major surface and the film exterior member, (v) the first and second insulative adhesion layers are adhered to the exterior member and the first and second major surface, respectively, by their respective double-sided adhesive tape so that the upper and lower members of the film exterior member directly abut each other about a perimeter of the film exterior member, (vi) the support layers do not include polyethylene or cellophane, (vii) the support layers comprise a polypropylene or a polyimide film, and (viii) the adhesion layers comprise a pressure-attach adhesive.