US 11,813,830 B2
Battery separators and related methods
Lie Shi, Matthews, NC (US); Christopher L. Cowger, Charlotte, NC (US); and Heba K. Botros, Waxhaw, NC (US)
Assigned to Celgard, LLC, Charlotte, NC (US)
Filed by Celgard, LLC, Charlotte, NC (US)
Filed on Dec. 23, 2021, as Appl. No. 17/560,309.
Application 17/560,309 is a division of application No. 15/238,850, filed on Aug. 17, 2016, granted, now 11,239,532.
Claims priority of provisional application 62/205,805, filed on Aug. 17, 2015.
Prior Publication US 2022/0115742 A1, Apr. 14, 2022
Int. Cl. B32B 3/26 (2006.01); B32B 5/02 (2006.01); B32B 27/12 (2006.01); B32B 27/30 (2006.01); B32B 27/40 (2006.01); B32B 5/08 (2006.01); B32B 27/20 (2006.01); B32B 27/32 (2006.01); B32B 7/04 (2019.01); H01M 50/44 (2021.01); H01M 50/403 (2021.01); H01M 50/423 (2021.01); H01M 50/417 (2021.01); H01M 50/489 (2021.01); H01M 50/491 (2021.01); H01M 50/42 (2021.01); H01M 50/426 (2021.01); H01M 50/454 (2021.01); H01M 50/414 (2021.01); H01M 50/451 (2021.01); H01M 50/457 (2021.01); H01M 10/052 (2010.01)
CPC B32B 3/26 (2013.01) [B32B 5/022 (2013.01); B32B 5/08 (2013.01); B32B 7/04 (2013.01); B32B 27/12 (2013.01); B32B 27/205 (2013.01); B32B 27/302 (2013.01); B32B 27/304 (2013.01); B32B 27/308 (2013.01); B32B 27/32 (2013.01); B32B 27/40 (2013.01); H01M 50/403 (2021.01); H01M 50/414 (2021.01); H01M 50/417 (2021.01); H01M 50/42 (2021.01); H01M 50/423 (2021.01); H01M 50/426 (2021.01); H01M 50/44 (2021.01); H01M 50/451 (2021.01); H01M 50/454 (2021.01); H01M 50/457 (2021.01); H01M 50/489 (2021.01); H01M 50/491 (2021.01); B32B 2250/24 (2013.01); B32B 2255/02 (2013.01); B32B 2255/26 (2013.01); B32B 2260/021 (2013.01); B32B 2260/046 (2013.01); B32B 2262/02 (2013.01); B32B 2262/0238 (2013.01); B32B 2262/0253 (2013.01); B32B 2262/0261 (2013.01); B32B 2262/0269 (2013.01); B32B 2262/0276 (2013.01); B32B 2262/0284 (2013.01); B32B 2262/12 (2013.01); B32B 2262/14 (2013.01); B32B 2264/102 (2013.01); B32B 2264/104 (2013.01); B32B 2264/12 (2013.01); B32B 2274/00 (2013.01); B32B 2307/206 (2013.01); B32B 2307/732 (2013.01); B32B 2457/10 (2013.01); H01M 10/052 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A battery separator comprising:
a first coating layer adhered to a first surface of a first nonwoven layer;
a second surface of the first nonwoven layer is laminated to a first surface of a second coating layer;
a second surface of the second coating layer is adhered to a first surface of a polyolefin microporous membrane,
a second surface of the polyolefin microporous membrane is adhered to a first surface of a third coating layer;
a second surface of the third coating layer is laminated to a first surface of a second nonwoven layer; and
a second surface of the second nonwoven layer is adhered to a fourth coating layer.