US 12,218,533 B1
Multi-bus energy storage system
Robert E. Rutter, San Jose, CA (US); William B. Reed, San Jose, CA (US); and Eugene F. Krzywinski, San Jose, CA (US)
Assigned to eIQ Energy, Inc., Santa Clara, CA (US)
Filed by eIQ Energy, Inc., Santa Clara, CA (US)
Filed on Jul. 12, 2023, as Appl. No. 18/221,290.
Int. Cl. H02J 1/12 (2006.01); H02J 3/38 (2006.01); H02J 3/46 (2006.01); H02J 7/00 (2006.01); H02J 7/34 (2006.01); H02J 7/35 (2006.01)
CPC H02J 7/0013 (2013.01) [H02J 1/12 (2013.01); H02J 3/38 (2013.01); H02J 3/381 (2013.01); H02J 3/46 (2013.01); H02J 7/0048 (2020.01); H02J 7/005 (2020.01); H02J 7/342 (2020.01); H02J 7/35 (2013.01); H02J 2207/20 (2020.01); H02J 2300/24 (2020.01)] 17 Claims
OG exemplary drawing
 
1. A multi-bus, energy storage system comprised of:
an energy storage bus;
a bidirectional DC DC converter that is connected to the energy storage bus and to a parallel-connected array of energy storage batteries; which bidirectional DC DC converter is adapted to: (a) draw energy from the energy storage bus to charge the energy storage batteries and (b) draw energy from the energy storage batteries and transfer it to the energy storage bus;
wherein the energy storage bus is adapted to be connected to outputs from one or more energy sources which are connected in parallel to each other and the bidirectional DC DC converter on the energy storage bus, which outputs comprise an output from one or more of a solar panel array, an AC DC rectifier that receives input from a utility main and/or an AC generator; and the energy storage bus is adapted to receive: (a) solar energy output from the solar panel array over a solar input line; and (b) energy output from the AC DC rectifier over an input line;
a power demand bus that provides power delivery, which power bus is comprised of a series-connected array of batteries and is adapted to be connected to and provide power delivery to a load;
wherein each battery in the series-connected array of batteries is connected to a DC DC charger, which DC DC chargers are connected to the energy storge bus and are adapted to draw energy from the energy storage bus and to charge the battery to which it is connected; and
a supervisory system comprised of a system supervisor;
wherein the system supervisor is adapted to (a) receive information from an AC DC rectifier and send supervisory level commands thereto over an AC DC rectifier control line; (b) receive information from the bidirectional DC DC converter and send supervisory level commands to the converter over a converter control line; (c) receive charger information from the DC DC chargers and send supervisory level commands to the DC DC chargers over charger control lines; and (d) receive information from a solar controller and send supervisory level commands to the solar controller over a solar control line.