US 12,136,843 B2
Elevator emergency power systems and methods
Junkyeong Kim, Rancho Cucamonga, CA (US); Minjun Seo, Rancho Cucamonga, CA (US); and Darin Morgan, Rancho Cucamonga, CA (US)
Assigned to MicroNOC Inc., Rancho Cucamonga, CA (US)
Filed by Junkyeong Kim, Rancho Cucamonga, CA (US); Minjun Seo, Rancho Cucamonga, CA (US); and Darin Morgan, Rancho Cucamonga, CA (US)
Filed on Mar. 4, 2022, as Appl. No. 17/686,709.
Application 17/686,709 is a continuation in part of application No. 16/576,762, filed on Sep. 19, 2019, granted, now 11,177,661.
Prior Publication US 2023/0327472 A1, Oct. 12, 2023
Int. Cl. H02J 7/00 (2006.01); G05B 15/02 (2006.01); H02J 9/06 (2006.01)
CPC H02J 7/007182 (2020.01) [H02J 7/0029 (2013.01); H02J 7/0068 (2013.01); H02J 9/062 (2013.01); G05B 15/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system to supply emergency power to an elevator, comprising:
one or more lithium batteries,
an inverter having an idle, on or off condition and coupled to the lithium batteries,
a battery management system (BMS) coupled to the inverter,
an Energy Management System (EMS) coupled to the BMS,
a relay coupled to utility power;
a charging contactor activated or deactivated by the relay and providing status to the EMS; and
a discharging contactor activated or deactivated by the relay and providing status to the EMS,
wherein the EMS sets the inverter idle, on or off based on the state of the charging contactor, the state of the discharging contactor, a state of charge (SOC) of the batteries, and a system safety status,
wherein the relay provides utility power to the system and notifies the EMS that utility power is on, wherein the EMS initiates charging of the BMS, wherein the BMS sends charging command to the inverter until the SOC reaches 100%, where the inverter is in idle.