US 12,322,966 B2
System and method for storing energy, and for recovering stored energy by using liquid and gas as pistons
Shay Cohen, Kfar Saba (IL)
Assigned to STORAGE DROP LTD, Rehovot (IL)
Appl. No. 18/275,719
Filed by STORAGE DROP LTD, Rehovot (IL)
PCT Filed Feb. 4, 2022, PCT No. PCT/IL2022/050151
§ 371(c)(1), (2) Date Aug. 3, 2023,
PCT Pub. No. WO2022/168096, PCT Pub. Date Aug. 11, 2022.
Claims priority of provisional application 63/145,611, filed on Feb. 4, 2021.
Prior Publication US 2024/0297529 A1, Sep. 5, 2024
Int. Cl. H02J 15/00 (2006.01); F03B 13/06 (2006.01)
CPC H02J 15/006 (2013.01) [F03B 13/06 (2013.01); F05B 2210/18 (2013.01); F05B 2240/40 (2013.01); F05B 2260/422 (2020.08)] 10 Claims
OG exemplary drawing
 
1. An energy storage system that uses liquid pistons and gas, comprising:
a) one or more liquid-gas tanks, within each of which a portion of gas and a stream of liquid are receivable, the stream of liquid functioning as a piston for compressing the received portion of gas,
b) one or more electrically powered liquid pumps, for delivering the stream of liquid into each of said liquid-gas tranks;
c) one or more compresed gas storage tanks within each of which the compressed gas received from said one or more liquid-gas tanks is storable,
d) piping components, branches thereof, and a plurality of control valves by which liquid and gas is controllably deliverable through said storage system; and
e) one or more controller in data communication with said plurality of control valves, for managing flow of gas and liquid through said storage system,
wherein the one or more controllers are operable to synchronize opening and closing of the plurality of control valves so the cyclical flow of liquid to and from said one or more liquid-gas tanks is always in a same direction and that the compressed gas is prevented from being mixed with the liquid during the cyclical flow,
wherein the stored compressed gas is dischargeable externally to said storage system to release the stored energy.