US 11,967,854 B2
Battery-ultracapacitor hybrid energy storage system architecture for mild-hybrid power systems
Subbarao Varigonda, Columbus, IN (US); Jaroslaw Leonarski, Columbus, IN (US); and Harsha R. Ademane, Indianapolis, IN (US)
Assigned to CUMMINS INC., Columbus, IN (US)
Appl. No. 17/433,116
Filed by Cummins Inc., Columbus, IN (US)
PCT Filed Jan. 23, 2020, PCT No. PCT/US2020/014736
§ 371(c)(1), (2) Date Aug. 23, 2021,
PCT Pub. No. WO2020/214225, PCT Pub. Date Oct. 22, 2020.
Claims priority of provisional application 62/833,823, filed on Apr. 15, 2019.
Prior Publication US 2022/0190629 A1, Jun. 16, 2022
Int. Cl. H02J 7/34 (2006.01); B60K 6/28 (2007.10); H01M 10/44 (2006.01); H01M 10/0525 (2010.01); H01M 10/48 (2006.01)
CPC H02J 7/345 (2013.01) [B60K 6/28 (2013.01); H01M 10/44 (2013.01); H01M 10/0525 (2013.01); H01M 10/48 (2013.01); H01M 2220/20 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A mild-hybrid energy storage system architecture, comprising:
a battery;
an ultracapacitor connected in parallel with the battery;
a passive battery pre-charge circuit connected between a terminal of the battery and a DC bus;
a battery main contactor connected in parallel with the battery pre-charge circuit between the terminal of the battery and the DC bus;
a passive ultracapacitor pre-charge circuit connected between a terminal of the ultracapacitor and the DC bus;
an ultracapacitor main contactor connected in parallel with the ultracapacitor pre-charge circuit between the terminal of the ultracapacitor and the DC bus; and
a control module configured to independently control operation of the battery pre-charge circuit, the battery main contactor, the ultracapacitor pre-charge circuit and the ultracapacitor main contactor.