US 9,812,680 B2
Low Z-fold battery seal
Christopher M. Werner, San Jose, CA (US); Tyson B. Manullang, Sunnyvale, CA (US); and Gregory N. Stephens, Sunnyvale, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Christopher M. Werner, San Jose, CA (US); Tyson B. Manullang, Sunnyvale, CA (US); and Gregory N. Stephens, Sunnyvale, CA (US)
Filed on Aug. 30, 2012, as Appl. No. 13/599,377.
Prior Publication US 2014/0065474 A1, Mar. 6, 2014
Int. Cl. H01M 2/08 (2006.01); H01M 2/02 (2006.01); H01M 2/04 (2006.01)
CPC H01M 2/08 (2013.01) [H01M 2/021 (2013.01); H01M 2/0207 (2013.01); H01M 2/0267 (2013.01); H01M 2/0292 (2013.01); H01M 2/0408 (2013.01); Y10T 156/1043 (2015.01)] 9 Claims
OG exemplary drawing
 
1. A battery assembly comprising:
a battery element for storing electrical energy;
a battery case comprising first and second casing portions formed about the battery element, the first and second casing portions defining first and second major surfaces of the battery case;
a seal structure for sealing the battery case about the battery element, the seal structure comprising a bond between the first and second casing portions, the bond extending along a side of the battery case, the side extending between the first and second major surfaces;
a fold in the seal structure, wherein the fold positions the seal structure against the side of the battery case in a substantially perpendicular orientation with respect to the first and second major surfaces;
a protective wrap positioned about the battery case;
a first adhesive detachably coupling the protective wrap to the battery case and having a first bonding strength; and
a second adhesive detachably coupling a first portion of the protective wrap to a second portion of the protective wrap and having a second bonding strength greater than the first bonding strength.