Granted Patent B2

US 12,424,872 · App. 17/870,443 · Granted Sep 23, 2025

Inventors: David D. Heilman (Geneseo, IL); Justin R. Smith (Bettendorf, IA)

Assignee: STUDSVIK INC.

H02J9/062H02J7/02H02J9/066

Abstract

Claims (73)

1. An apparatus, comprising:

an enclosure comprising:

a battery configured to output a direct current (DC) power via a first electrical connection;

an inverter having an internal transfer switch, the inverter configured to:

(i) receive the DC power from the battery via the first electrical connection, convert the DC power to a first alternating current (AC) power and output the first AC power to a variable frequency drive via a second electrical connection; and

(ii) receive a second AC power from a transfer switch via a third electrical connection and auctioneer the second AC power to the variable frequency drive via the internal transfer switch and the second electrical connection, wherein the internal transfer switch is distinct from the transfer switch and wherein the receiving and the auctioneering maintains a constant output to the variable frequency drive;

the variable frequency drive configured to:

receive the first AC power and the second AC power from the inverter;

convert the first AC power and the second AC power to a three-phase current; and

output the three-phase current via a fourth electrical connection;

the transfer switch configured to:

receive power from at least two power sources, the at least two power sources including the variable frequency drive; and

output the power via a fifth electrical connection; and

a port coupled to the enclosure, wherein the port includes a plurality of outlets, the port configured to;

receive the power from the transfer switch; and

output the power via the plurality of outlets.

2. The apparatus of claim 1 , further comprising a control module, wherein the control module comprises:

a voltage indicator configured to output a voltage indication based on the first AC power and/or the second AC power; and

a current indicator configured to output a current indication based on the first AC power and/or the second AC power.

3. The apparatus of claim 1 , further comprising:

a first cable coupled to a first outlet of the plurality of outlets; and

a second cable coupled to a second outlet of the plurality of outlets.

4. The apparatus of claim 1 , wherein the inverter is further configured to:

receive an AC input from the transfer switch;

convert the AC input to DC power; and

charge the battery based on the DC power.

5. The apparatus of claim 1 , wherein the transfer switch comprises a time delay configured to set at least one of a voltage delay trigger or a time delay trigger based on a detection of power on an electrical connection of the transfer switch and wherein the transfer switch is further configured to override a power selection of the inverter.

6. The apparatus of claim 1 , wherein the transfer switch is further configured to supply electricity to a control module based on an absence of power on an electrical connection of the transfer switch.

7. The apparatus of claim 1 , wherein the inverter is further configured to output an alternating current to the transfer switch and provide a second direct current to the battery.

8. The apparatus of claim 1 , further comprising a cable configured to:

conduct electricity between a power source external to the enclosure and the enclosure, wherein

the power source external to the enclosure is configured to power a distribution hub.

9. The apparatus of claim 8 , wherein the power source external to the enclosure comprises a generator configured to generate the electricity based on at least one of gasoline, liquid propane gas, natural gas, or diesel fuel.

10. The apparatus of claim 1 , further comprising wheels movably coupled to the enclosure, wherein the enclosure is configured to contain the battery, the transfer switch, and the inverter.

11. The apparatus of claim 1 , wherein the battery comprises one or more of a Lithium Ion (Li+) battery, a lead acid (Pb) battery, or a Lithium Iron Phosphate (LiFePo) battery.

12. The apparatus of claim 1 , further comprising:

a controller configured to control operation of the inverter.

13. The apparatus of claim 1 , wherein:

the plurality of outlets includes a first outlet that is electrically coupled to a first step-down transformer;

the inverter is configured to invert the second AC power received from the transfer switch to a second DC power; and

the first step-down transformer is configured to:

step down the second DC power to a lower DC power; and

output the lower DC power via the first outlet.

14. A method comprising:

configuring a battery, within an enclosure, to output a direct current (DC) power via a first electrical connection;

configuring an inverter having an internal transfer switch, within the enclosure, to:

(i) receive the DC power from the battery via the first electrical connection, convert the DC power to a first alternating current (AC) power and output the first AC power to a variable frequency drive via a second electrical connection; and

(ii) receive a second AC power from a transfer switch via a third electrical connection and auctioneer the second AC power to the variable frequency drive via the internal transfer switch and the second electrical connection, wherein the internal transfer switch is distinct from the transfer switch and wherein the receiving and the auctioneering maintains a constant output to the variable frequency drive;

configuring the variable frequency drive, within the enclosure, to;

receive the first AC power and the second AC power from the inverter;

convert the first AC power and the second AC power to a three-phase current, via a fourth electrical connection;

configuring the transfer switch, within the enclosure, to:

receive power from at least two power sources, the at least two power sources including the variable frequency drive; and

output the power via a fifth electrical connection; and

configuring a port having a plurality of outlets, coupled to the enclosure, to:

receive the power from the transfer switch; and

output the power via the plurality of outlets.

15. The method of claim 14 , further comprising:

configuring a voltage indicator of a control module, within the enclosure, to output a voltage indication based on the first AC power and/or the second AC power; and

configuring a current indicator of the control module to output a current indication based on the first AC power and/or the second AC power.

16. The method of claim 14 , further configuring the port to:

output the direct current via a first outlet of the plurality of outlets of the port; and

output an alternating current via a second outlet of the plurality of outlets of the port.

17. The method of claim 16 , further comprising:

coupling a first cable to the first outlet of the port; and

coupling a second cable to the second outlet of the port.

18. The method of claim 14 , further comprising configuring the inverter to:

receive an AC input from the transfer switch;

convert the AC input to DC power; and

charge the battery based on the DC power.

19. The method of claim 14 , further comprising:

configuring a time delay of the transfer switch to set at least one of a voltage delay trigger or a time delay trigger based on a detection of power on an electrical connection of the transfer switch; and

configuring the transfer switch to override a power selection of the inverter.

Assignments (3)

Continuity (2)

References Cited (52)