IP Library › Granted Patent US 12,347,832
Granted Patent B2
US 12,347,832 · App. 18/218,412 · Granted Jul 1, 2025

Electrochemical energy storage devices

Inventors: Zachary T. Modest (Jamaica Plain, MA); Fredrick Charles Davis Allan (Cambridge, MA); Donald R. Sadoway (Cambridge, MA); Daniel M. Holzer (Medford, MA); Stephanie L. Golmon (Arlington, MA); Raymond Maxime Fox (Walpole, MA); Nick Trombetta (Bolton, MA); Alexander W. Elliott (Billerica, MA); Hari P. Nayar (Woburn, MA); David J. Bradwell (Sudbury, MA)
Assignee: AMBRI, LLC
H01M10/399B60L50/64B60L53/00B60L53/53H01M4/134H01M4/38H01M4/381H01M4/382H01M10/4207H01M10/425H01M50/463H01M4/387H01M50/138H01M2220/20Y02T10/70Y02T10/7072Y02T90/14
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Quick Facts
Patent No.
US 12,347,832
App. No.
18/218,412
Granted
Jul 1, 2025
Kind
B2
Abstract

Provided herein are energy storage devices. In some cases, the energy storage devices are capable of being transported on a vehicle and storing a large amount of energy. An energy storage device is provided comprising at least one liquid metal electrode, an energy storage capacity of at least about 1 MWh and a response time less than or equal to about 100 milliseconds (ms).

Claims (21)

1. An electrochemical energy storage system comprising:

(a) a first plurality of electrochemical cells, wherein each electrochemical cell of said first plurality electrochemical cells comprises a negative electrode, an electrolyte and a positive electrode, wherein said electrolyte and at least one of said negative electrode and said positive electrode are in a liquid state at an operating temperature of said electrochemical cell, and wherein a first electrochemical cell of said first plurality of electrochemical cells and a second electrochemical cell of said first plurality of electrochemical cells are directly connected to one another; and

(b) a busbar in electrical communication with said first electrochemical cell of said first plurality of electrochemical cells and a third electrochemical cell of a second plurality of electrochemical cells, wherein said busbar comprises a conductive material, wherein an internal resistance between said first plurality of electrochemical cells and said second plurality of electrochemical cells connected to said busbar is less than about 10 milliohm.

2. The electrochemical energy storage system of claim 1 , wherein said conductive material comprises aluminum.

3. The electrochemical energy storage system of claim 1 , wherein said conductive material comprises copper.

4. The electrochemical energy storage system of claim 1 , wherein said conductive material comprises nickel.

5. The electrochemical energy storage system of claim 1 , wherein said conductive material comprises an aluminum-copper alloy.

6. The electrochemical energy storage system of claim 1 , wherein said conducive material has an electrical conductivity at an operating temperature of said electrochemical energy storage system that is greater than an electrical conductivity of stainless steel at said operating temperature.

7. The electrochemical energy storage system of claim 3 , wherein said conductive material is coated with an oxidation-resistant material.

8. The electrochemical energy storage system of claim 7 , wherein said oxidation-resistant material comprises aluminum-bronze, aluminum-brass, chromium, nickel, or stainless steel, or any combination thereof.

9. The electrochemical energy storage system of claim 1 , wherein said conductive material has an electrical conductivity greater than about 2×10 6 S/m at 20° C. or greater than about 1×10 6 S/m at 500° C.

10. The electrochemical energy storage system of claim 1 , wherein said busbar is joined to an end-cap.

11. The electrochemical energy storage system of claim 10 , wherein said busbar is brazed, press-fit or welded to said end-cap.

12. The electrochemical energy storage system of claim 1 , wherein said busbar is an interconnect.

13. The electrochemical energy storage system of claim 1 , further comprising an interconnect that electrically connects said busbar of said first plurality of electrochemical cells with said second plurality of electrochemical cells, thereby placing said first plurality of electrochemical cells and said second plurality of electrochemical cells in series or in parallel.

14. The electrochemical energy storage system of claim 13 , wherein said interconnect comprises a same conductive material as said busbar.

15. The electrochemical energy storage system of claim 1 , wherein said operating temperature of said electrochemical cell is at least about 250° C.

16. The electrochemical energy storage system of claim 1 , wherein said first electrochemical cell and said second electrochemical cell each comprises an electrically conductive housing with a lid, wherein said negative electrode, said positive electrode, and said electrolyte are disposed in said electrically conductive housing, and wherein said lid is in electrical communication with said positive electrode.

17. The electrochemical energy storage system of claim 16 , wherein said first electrochemical cell and said second electrochemical cell each comprise a conductor that protrudes through an aperture in said lid of each electrochemical cell.

18. The electrochemical energy storage system of claim 1 , wherein said negative electrode is liquid at said operating temperature of said first plurality of electrochemical cells, and wherein said negative electrode comprises (i) one or more alkaline metals or (ii) one or more alkaline earth metals.

19. The electrochemical energy storage system of claim 18 , wherein said negative electrode comprises lithium, sodium, potassium, magnesium, or calcium, or any combination thereof.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 3, 2025
From: MODEST, ZACHARY T.; ALLAN, FREDRICK CHARLES DAVID; SADOWAY, DONALD R.; HOLZER, DANIEL M.; GOLMON, STEPHANIE L.; FOX, RAYMOND MAXIME; TROMBETTA, NICK; ELLIOTT, ALEXANDER W.; NAYAR, HARI P.; BRADWELL, DAVID J.
To: AMBRI, LLC
Reel/Frame 071305/0339 →
SECURITY INTEREST Recorded Jan 18, 2024
From: AMBRI INC.
To: GATES FRONTIER, LLC
Reel/Frame 066351/0221 →
Continuity (5)
Continuation 17404341 · Aug 17, 2021
Continuation In Part 15063842 · Mar 8, 2016
Continuation PCTUS2014056367 · Sep 18, 2014
Provisional Application 61879349 · Sep 18, 2013
Related Publication 20230344015A1 · Oct 26, 2023
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