Portable power supply

Patent metadata

Field	Value
Publication number	US-11949263-B2
Application number	US-202217967185-A
Country	US
Kind code	B2
Filing date	Oct 17, 2022
Priority date	Dec 12, 2013
Publication date	Apr 2, 2024
Grant date	Apr 2, 2024

Abstract

A portable power source includes a housing and a battery receptacle supported by the housing. The battery receptacle is configured to receive a battery. The portable power source also includes a first power tool battery pack port that is configured to receive a first power tool battery pack. The portable power source further includes a charging circuit coupled to the battery receptacle and the power tool battery pack, and an inverter. The charging circuit is configured to receive power from the battery receptacle and to provide power to the power tool battery pack port. The inverter includes a DC input coupled to the battery receptacle, inverter circuitry, and an AC output. The inverter circuitry is configured to receive power from the battery receptacle via the DC input, invert DC power received from the battery receptacle to AC power, and provide the AC power to the AC output.

First claim

What is claimed is:

1. A portable power source comprising:
a housing;
a first power tool battery pack port formed in the housing and configured to supportably receive a first power tool battery pack;
a receptacle formed in the housing and configured to supportably receive an energy storage device, the energy storage device not configured to be received by the first power tool battery pack port;
a power output panel including an alternating current (“AC”) output connecter for providing AC power to a peripheral device;
an inverter electrically connected to the first power tool battery pack port, the energy storage device, and the AC output;
circuitry configured to connect one of the first power tool battery pack port and the energy storage device for supplying power to the inverter; and
a controller including an electronic processor, the controller configured to:
control the circuitry to provide direct current (“DC”) power from the energy storage device to the inverter when a state of charge of the energy storage device is above a first voltage threshold, and
control the circuitry to provide DC power from the first power tool battery pack port to the inverter when the state of charge of the energy storage device is below the first voltage threshold or the energy storage device is disconnected from the receptacle.

2. The portable power source of claim 1 , wherein an energy storage capacity of the first power tool battery pack is less than an energy storage capacity of the energy storage device.

3. The portable power source of claim 1 , wherein the energy storage device includes battery cells of a first chemistry and the first power tool battery pack includes battery cells of a second chemistry.

4. The portable power source of claim 1 , wherein the energy storage device includes battery cells of a first type and the first power tool battery pack includes battery cells of a second type.

5. The portable power source of claim 1 , further comprising a second power tool battery pack supportably received at a second power tool battery pack port.

6. The portable power source of claim 5 , wherein the energy storage device is not configured to be received by the second power tool battery pack port.

7. The portable power source of claim 5 , wherein the energy storage device includes battery cells of a first chemistry, the first power tool battery pack includes battery cells of a second chemistry, and the second power tool battery pack includes battery cells of a third chemistry.

8. The portable power source of claim 5 , wherein the first power tool battery pack includes battery cells of a first type and the second power tool battery pack includes battery cells of a second type.

9. The portable power source of claim 5 , wherein the first power tool battery pack includes battery cells of a first chemistry and the second power tool battery pack includes battery cells of a second chemistry.

10. A method of operating a portable power source comprising:
receiving a first power tool battery pack at a first power tool battery pack port supported by a housing of the portable power source;
receiving an energy storage device at a receptacle formed in the housing of the portable power source, the energy storage device not configured to be received by the first power tool battery pack port;
controlling, by a controller having an electronic processor, circuitry to provide direct current (“DC”) power from the energy storage device to an inverter when a state of charge of the energy storage device is above a first voltage threshold;
controlling, by the controller, circuitry to provide DC power from the first power tool battery pack to the inverter when the state of charge of the energy storage device is below the first voltage threshold or the energy storage device is disconnected from the receptacle;
inverting, by the inverter, the received DC power to alternating current (“AC”) power; and
providing the AC power to an AC output.

11. The method of claim 10 , wherein the energy storage device includes battery cells of a first chemistry and the first power tool battery pack includes battery cells of a second chemistry.

12. The method of claim 10 , wherein the energy storage device includes battery cells of a first type and the first power tool battery pack includes battery cells of a second type.

13. The method of claim 10 , further comprising receiving a second power tool battery pack at a second power tool battery pack port supported by the housing of the portable power source.

14. The method of claim 13 , wherein the energy storage device is not configured to be received by the second power tool battery pack port.

15. The method of claim 13 , wherein the energy storage device includes battery cells of a first chemistry, the first power tool battery pack includes battery cells of a second chemistry, and the second power tool battery pack includes battery cells of a third chemistry.

16. The method of claim 13 , wherein the first power tool battery pack includes battery cells of a first type and the second power tool battery pack includes battery cells of a second type.

17. The method of claim 13 , wherein the first power tool battery pack includes battery cells of a first chemistry and the second power tool battery pack includes battery cells of a second chemistry.

18. A portable power source comprising:
a housing;
a first power tool battery pack port formed in the housing configured to supportably receive a first power tool battery pack;
a receptacle formed in the housing and configured to supportably receive an energy storage device, the energy storage device not configured to be received by the first power tool battery pack port;
a power output panel including an alternating current (“AC”) output connecter for providing AC power to a peripheral device;
an inverter electrically connected to the first power tool battery pack port, the energy storage device, and the AC output;
circuitry configured to connect one of the first power tool battery pack port and the energy storage device for supplying power to the inverter; and
a controller including an electronic processor, the controller configured to:
control the circuitry to simultaneously provide direct current (“DC”) power from the energy storage device and the first power tool battery pack port to the inverter, and
control the inverter to invert the DC power received from the energy storage device and the first power tool battery pack port to AC power provided to the AC output.

19. The portable power source of claim 18 , wherein the energy storage device includes battery cells of a first chemistry and the first power tool battery pack includes battery cells of a second chemistry.

20. The portable power source of claim 18 , wherein the energy storage device includes battery cells of a first type and the first power tool battery pack includes battery cells of a second type.

Assignees

• Milwaukee Electric Tool Corp

Inventors

• Fry Paul
• Harvey Kyle

Classifications

• H02J2105/44

  Portable electronic devices · CPC title

• H02J7/825

  Detection of fully charged condition · CPC title

• H02J7/751

  concerning the insertion or the connection of the batteries · CPC title

• H02J7/731

  specially adapted for holding portable devices containing batteries (H02J7/751 takes precedence) · CPC title

• H02J7/585

  Sequential battery discharge in systems with a plurality of batteries · CPC title