US 11,870,041 B2
Lead-acid battery separators with improved performance and batteries and vehicles with the same and related methods
Eric H. Miller, Philpot, KY (US); M. Neal Golovin, Silver Spring, MD (US); Ahila Krishnamoorthy, Bangalore (IN); Matthew Howard, Owensboro, KY (US); James P. Perry, Utica, KY (US); and J. Kevin Whear, Utica, KY (US)
Assigned to Daramic, LLC, Charlotte, NC (US)
Filed by DARAMIC, LLC, Charlotte, NC (US)
Filed on Mar. 4, 2021, as Appl. No. 17/191,732.
Application 17/191,732 is a division of application No. 15/288,496, filed on Oct. 7, 2016, granted, now 10,985,428.
Application 15/288,496 is a continuation of application No. PCT/US2016/012805, filed on Jan. 11, 2016.
Claims priority of provisional application 62/385,347, filed on Sep. 9, 2016.
Claims priority of provisional application 62/277,136, filed on Jan. 11, 2016.
Claims priority of provisional application 62/238,373, filed on Oct. 7, 2015.
Prior Publication US 2021/0203038 A1, Jul. 1, 2021
Int. Cl. H01M 10/06 (2006.01); H01M 50/463 (2021.01); H01M 50/414 (2021.01); H01M 50/417 (2021.01); H01M 50/429 (2021.01); H01M 50/491 (2021.01); H01M 50/489 (2021.01)
CPC H01M 10/06 (2013.01) [H01M 50/414 (2021.01); H01M 50/417 (2021.01); H01M 50/429 (2021.01); H01M 50/463 (2021.01); H01M 50/489 (2021.01); H01M 50/491 (2021.01); H01M 2220/20 (2013.01); Y02E 60/10 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A stop/start flooded lead acid battery separator comprising;
a backweb having at least three zones of varying serrated, dimpled, and/or broken rib patterns on at least one side thereof;
wherein said ribs being defined by an angular orientation, relative to a machine (or vertical) direction of the battery separator and said angular orientation is an angle chosen from the group consisting of between greater than zero degrees and less than 180 degrees, and greater than 180 degrees and less than 360 degrees and wherein at least three of the zones have ribs with different angular orientation; and
wherein when placed into the stop/start flooded lead acid battery, the battery exhibits a difference in electrolyte density at a top portion of the separator and electrolyte density at a bottom portion of the separator of less than 50% after the battery has undergone from 30 to 90 start/stop cycles.