Reconfigurable architecture for stationary energy storage system

Patent metadata

Field	Value
Publication number	US-12334573-B2
Application number	US-202117565180-A
Country	US
Kind code	B2
Filing date	Dec 29, 2021
Priority date	Dec 29, 2021
Publication date	Jun 17, 2025
Grant date	Jun 17, 2025

Abstract

A modular energy storage cabinet, and a system including same, may include an AC connection port capable of connecting to an AC bus, and a plurality of battery modules, an inverter, and a plurality of busses, wherein the plurality of busses electrically connect the plurality of batteries to each other and to the positive DC input and negative DC input of the inverter to effectuate a voltage.

First claim

The invention claimed is:

1. A modular energy storage cabinet comprising:
an AC connection port capable of connecting to an AC bus;
a plurality of battery modules, each battery module comprising a battery, a positive terminal and a negative terminal;
an inverter having a positive DC port, a negative DC port, and an AC port; and
a plurality of busses having at least one internal bus;

wherein the plurality of busses electrically connect the plurality of batteries to each other and to the positive DC input and negative DC input of the inverter to effectuate a voltage, wherein the at least one internal bus of the plurality of busses connects the positive terminal of a first battery module to the negative terminal of a second battery module.

2. The modular energy storage cabinet of claim 1 wherein each battery module further comprises a DC-to-DC converter connected to the battery and to the positive and negative terminal of the respective module.

3. The modular energy storage cabinet of claim 1 wherein the plurality of busses comprises a positive bus and a negative bus, and wherein negative terminal of each battery module of the plurality of battery modules is connected to the negative DC port of the inverter by the negative bus, and positive terminal of each of the battery modules of the plurality of battery modules is connected to the positive DC port of the inverter by the positive bus.

4. The modular energy storage cabinet of claim 1 wherein the plurality of busses comprises a positive bus, and a negative bus, and wherein negative terminal of the first battery module of the plurality of battery modules is connected to the negative DC port of the inverter by the negative bus, and positive terminal of a last module of the plurality of battery modules is connected to the positive DC port of the inverter by the positive bus, and wherein the at least one internal bus connects each of the battery modules in the plurality of battery modules in series from the first battery module to the last battery module.

5. The modular energy storage cabinet of claim 1 wherein the plurality of busses comprises a positive bus and a negative bus, and the plurality of battery modules comprises a first set of battery modules and a second set of battery modules, wherein the first set and the second set are different; wherein negative terminal of the first set is connected to the negative DC port of the inverter by the negative bus, and positive terminal of the last set is connected to the positive DC port of the inverter by the positive bus, and wherein the at least one internal bus connects each of the sets of battery modules of the plurality of battery modules in series from the batteries in the first set to the batteries in the last set of battery modules.

6. The modular energy storage cabinet of claim 5 wherein the plurality of sets of battery modules further comprises an intermediary set of battery modules between the first set of battery modules and the last set of battery modules.

7. A modular energy storage cabinet comprising:
an AC connection port capable of connecting to an AC bus;
a plurality of battery modules, each battery module comprising a battery, a positive terminal and a negative terminal;
an inverter having a positive DC port, a negative DC port, and an AC port;
a plurality of busses, wherein the plurality of busses electrically connect the plurality of batteries to each other and to the positive DC input and negative DC input of the inverter to effectuate a voltage; and
a circuit breaker in electronic communication with the AC port of the inverter and the AC connection port.

8. A modular energy storage cabinet comprising:
an AC connection port capable of connecting to an AC bus;
a plurality of battery modules, each battery module comprising a battery, a positive terminal and a negative terminal;
an inverter having a positive DC port, a negative DC port, and an AC port;
a plurality of busses, wherein the plurality of busses electrically connect the plurality of batteries to each other and to the positive DC input and negative DC input of the inverter to effectuate a voltage, and further wherein the plurality of busses are modular and detachable, such that the cabinet is reconfigurable by changing the configuration of batteries of the plurality of batteries each bus connects to which each bus connects.

9. A modular energy storage system comprising:
an AC bus capable of connecting to a power grid; and
a plurality of modular energy storage cabinets, each cabinet of the plurality of energy storage cabinets comprising:
an AC connection port capable of connecting to the AC bus;
a plurality of battery modules, each battery module comprising a battery, a positive terminal and a negative terminal;

an inverter having a positive DC port, a negative DC port, and an AC port; and
a plurality of busses having at least one internal bus;
wherein plurality busses electrically connect the plurality of batteries to each other and to the positive DC input and negative DC input of the inverter to effectuate a voltage, wherein the at least one internal bus of the plurality of busses connects the positive terminal of a first battery module to the negative terminal of a second battery module.

10. The modular energy storage system of claim 9 wherein each battery module, of a first cabinet of the plurality of cabinets, further comprises a DC-to-DC converter connected to the battery and to the positive and negative terminal of the respective module.

11. The modular energy storage system of claim 9 wherein the plurality of busses of a first cabinet of the plurality of cabinets, comprises a positive bus and a negative bus, and wherein the negative terminal of each battery module of the plurality of battery modules is connected to the negative DC port of the inverter by the negative bus, and the positive terminal of each of the battery modules of the plurality of battery modules is connected to the positive DC port of the inverter by the positive bus.

12. The modular energy storage system of claim 9 wherein the plurality of busses of a first cabinet of the plurality of cabinets, comprises a positive bus and a negative bus, and wherein negative terminal of the first battery module of the plurality of battery modules is connected to the negative DC port of the inverter by the negative bus, and positive terminal of a last module of the plurality of battery modules is connected to the positive DC port of the inverter by the positive bus, and wherein the at least one internal bus connects each of the battery modules in the plurality of battery modules in series from the first battery module to the last battery module.

13. The modular energy storage system of claim 9 wherein the plurality of busses of a first cabinet of the plurality of cabinets, comprises a positive bus and a negative bus, and the plurality of battery modules comprises a plurality of sets of battery modules, including a first set and a last set, wherein the first and last sets are different; and the negative terminal of the first set is connected to the negative DC port of the inverter by the negative bus, and positive terminal of the last set is connected to the positive DC port of the inverter by the positive bus, and wherein the at least one internal bus connects each of the sets of battery modules of the plurality of battery modules in series from the batteries in the first set to the last set.

14. The modular energy storage system of claim 13 wherein the plurality of battery modules of the first cabinet of the plurality of cabinets further comprises an intermediary set of batte

Assignees

• Atieva Inc

Inventors

• Mu Mingkai

Classifications

• H02J7/50

  acting upon multiple batteries simultaneously or sequentially · CPC title

• H01M50/298

  characterised by the wiring of battery packs · CPC title

• H01M50/258

  Modular batteries; Casings provided with means for assembling · CPC title

• H01M2220/10

  Batteries in stationary systems, e.g. emergency power source in plant · CPC title

• H02J1/10

  Parallel operation of DC sources · CPC title