US 12,149,079 B2
Energy management for connected charging stations with bidirectionality
Nicholas Seroff, San Jose, CA (US); and Tabish Shibly, Oakland, CA (US)
Assigned to SPEED CHARGE, LLC, Carter Lake, IA (US)
Filed by SPEED CHARGE, LLC, Carter Lake, IA (US)
Filed on Aug. 8, 2023, as Appl. No. 18/231,311.
Application 18/231,311 is a continuation of application No. 18/066,970, filed on Dec. 15, 2022, granted, now 11,749,991.
Prior Publication US 2024/0204522 A1, Jun. 20, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. B60L 53/14 (2019.01); H02J 3/00 (2006.01); H02J 3/14 (2006.01)
CPC H02J 3/144 (2020.01) [B60L 53/14 (2019.02); H02J 3/0075 (2020.01)] 18 Claims
OG exemplary drawing
 
1. A vehicle charging system for charging a vehicle, comprising:
a plurality of alternating current (AC) power ports including a first AC power port configured to receive input electric power from an AC power source via a power source circuit and a second AC power port configured to provide output electric power from the vehicle charging system to a local AC circuit at a charging site, wherein the local AC circuit is separate from the power source circuit and wherein the local AC circuit connects the vehicle charging system to an additional AC power port of an additional vehicle charging system at the charging site;
a battery configured to receive and store direct current (DC) electric power derived from the input electric power;
a rectifier disposed between the first AC power port and the battery to convert AC power into DC power to charge the battery;
an inverter disposed between the battery and at least the second AC power port to convert DC power from the battery into AC power to be supplied from the vehicle charging system to the second AC power port;
a vehicle coupling configured to receive a charging current from the battery and to provide an electrical interconnect between the vehicle charging system and the vehicle in order to provide the charging current to the vehicle; and
a system controller comprising one or more processors configured to:
determine occurrence of a triggering condition for charge transfer between the battery of the vehicle charging system and an additional battery of the additional vehicle charging system via the local AC circuit; and
in response to determining occurrence of the triggering condition, control the inverter based on the triggering condition to convert a DC output power from the battery into an AC output power to the second AC power port to provide the AC output power to the local AC circuit.