US 12,334,767 B2
Supercapacitor based energy storage device
Waseem Ashraf Qureshi, Dubai (AE)
Assigned to Kilowatt Labs, Inc., New York, NY (US)
Filed by KILOWATT LABS, INC., New York, NY (US)
Filed on Apr. 2, 2021, as Appl. No. 17/221,480.
Application 17/221,480 is a continuation of application No. 16/905,169, filed on Jun. 18, 2020, abandoned.
Application 16/905,169 is a continuation of application No. 15/490,409, filed on Apr. 18, 2017, abandoned.
Claims priority of provisional application 62/394,532, filed on Sep. 14, 2016.
Prior Publication US 2021/0249883 A1, Aug. 12, 2021
Int. Cl. H02J 7/00 (2006.01); H01G 11/10 (2013.01); H01M 10/0525 (2010.01); H01M 10/42 (2006.01); H01M 16/00 (2006.01); H02J 7/34 (2006.01)
CPC H02J 7/0069 (2020.01) [H01G 11/10 (2013.01); H01M 10/0525 (2013.01); H01M 10/425 (2013.01); H01M 16/00 (2013.01); H02J 7/0013 (2013.01); H02J 7/0018 (2013.01); H02J 7/345 (2013.01); H01M 2010/4271 (2013.01); H01M 2220/10 (2013.01); H02J 7/342 (2020.01); Y02E 60/13 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An energy storage device, comprising:
a charge storage assembly including an array of supercapacitors;
an auxiliary storage element connected in parallel to each supercapacitor in the array of supercapacitors;
a charge control circuit configured to provide a charging current to the array of supercapacitors during a charging operation, wherein the charge control circuit is configured to selectively transfer charge between at least one supercapacitor in the array of supercapacitors and the auxiliary storage element; and
a charge retention circuit configured to maintain a charge state of each supercapacitor in the array of supercapacitors when each supercapacitor is idle.