US 11,840,423 B2
Hybrid energy storage system architectures
Suman Dwari, Vernon, CT (US); Stephen Savulak, Woodbury, CT (US); Enrico Manes, Feeding Hills, MA (US); Ronnie E. Thebeau, Haddam, CT (US); and Xin Wu, Glastonbury, CT (US)
Assigned to OTIS ELEVATOR COMPANY, Farmington, CT (US)
Filed by Otis Elevator Company, Farmington, CT (US)
Filed on Dec. 13, 2019, as Appl. No. 16/713,979.
Claims priority of provisional application 62/779,731, filed on Dec. 14, 2018.
Prior Publication US 2020/0189883 A1, Jun. 18, 2020
Int. Cl. H04L 12/931 (2013.01); H04L 29/08 (2006.01); B66B 11/02 (2006.01); H02J 7/34 (2006.01); H02J 50/12 (2016.01)
CPC B66B 11/0226 (2013.01) [H02J 7/345 (2013.01); H02J 50/12 (2016.02); H02J 2207/20 (2020.01)] 18 Claims
OG exemplary drawing
 
1. A hybrid energy storage system for an elevator car, the system comprising:
a converter operably connected to receive power from a power source and provide a first voltage to a first energy source device and provide a second voltage to a second energy source device;
the first energy storage device having a first internal resistance;
the second energy storage device having a second internal resistance;
wherein the second internal resistance is less than the first internal resistance;
wherein the first energy source device and the second energy storage device are operably connected to a first load having first power demands, the first load associated with the elevator car;
wherein the first energy source device is operable to supply a first portion of the first power demands;
wherein the second energy storage device is operable to supply a second portion of the first power demands; and
wherein the second internal resistance being less than the first internal resistance enables the first portion of the first power demands to be less than the second portion of the first power demands.