US 9,812,677 B2
Reducing pouch thicknesses in battery cells for portable electronic devices
Richard M. Mank, Cupertino, CA (US); and Taisup Hwang, Santa Clara, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Apr. 29, 2013, as Appl. No. 13/872,951.
Claims priority of provisional application 61/776,034, filed on Mar. 11, 2013.
Prior Publication US 2014/0322590 A1, Oct. 30, 2014
Prior Publication US 2016/0181575 A9, Jun. 23, 2016
Int. Cl. H01M 2/02 (2006.01); H01M 10/052 (2010.01); H01M 10/04 (2006.01); H01M 10/058 (2010.01)
CPC H01M 2/0275 (2013.01) [H01M 2/026 (2013.01); H01M 2/0212 (2013.01); H01M 2/0277 (2013.01); H01M 2/0287 (2013.01); H01M 10/049 (2013.01); H01M 10/0436 (2013.01); H01M 10/052 (2013.01); H01M 10/058 (2013.01); H01M 2220/30 (2013.01); Y10T 156/10 (2015.01); Y10T 156/1002 (2015.01)] 17 Claims
 
1. A battery cell, comprising:
a set of layers, comprising a cathode with an active coating, a separator, and an anode with an active coating; and
a pouch enclosing the layers, comprising:
a first layer of polyether ether ketone (PEEK);
a first layer of aluminum;
a layer of polyurethane; and
a layer of polypropylene;
wherein the first layer of aluminum has a thickness in the range of 25-30 microns, and
wherein the layer of polypropylene has a thickness in the range of 15-25 microns.