Smart DC power supply for AC equipment

• US 10,277,155 B2
• Filed: 09/23/2015
• Issued: 04/30/2019
• Est. Priority Date: 09/23/2014
• Status: Active Grant

• Current Assignee: Emerson Electric Company
• Original Assignee: Emerson Electric Company
• Inventors: Williams, Matthew A, Wall, Alex J, Hill, Jason, Fogarty, Jr., Thomas E
• Primary Examiner(s): Fleming, Fritz M
• Assistant Examiner(s): Dhillon, Jagdeep S
• Application Number:
  US14/862,630
• Publication Number:
  US 20160233810A1
• Time in Patent Office: 1,315 Days
• Field of Search: 307126, 307 91, 307 31, 320109, 320107, 320162, 320128, 235379, 701 22, 439133, 439188, 702 62
• CPC Class Codes: A47L 9/2868 Arrangements for power supply of vacuum cleaners or the accessories thereof
• CPC Class Codes: A47L 9/2878 Dual-powered vacuum cleaners, i.e. devices which can be operated with mains power supply or by batteries
• CPC Class Codes: G06Q 30/00 Commerce
• CPC Class Codes: H02J 2310/22 The load being a portable electronic device
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction
• CPC Class Codes: H02J 9/005 using a power saving mode for copiers G03G15/5004
• CPC Class Codes: H02P 25/14 Universal motors H02P25/12 takes precedence

Abstract

A system is disclosed comprising a DC power supply for supplying DC power to a device having a universal electric motor configured to operate on AC power. The system is configured to have a first authorization component associated with the device and second authorization component associated with the DC power supply so that DC power is supplied to device, or is continued to be supplied to the device, only when the first and second authorization components operatively engage.

Claims

1. An apparatus comprising:

a chemical-to-electrical power source configured to supply DC power;

a power outlet coupled to the power source and configured to receive an AC power plug coupled to a device; and

an authorization detection component configured to—

communicate with the device to detect whether the device is authorized to receive DC power, based on electrical characteristics of the device,

if the device is authorized to receive DC power, permit the power outlet to supply the DC power from the chemical-to-electrical power source to the device via the AC power plug, and

if the device is not authorized to receive DC power, prevent the power outlet from supplying the DC power from the chemical-to-electrical power source to the device.

2. The apparatus of claim 1 further including a power inlet configured to receive power from another apparatus, in a daisy-chain configuration, such that the apparatuses together are operable to supply more power than either apparatus alone.

3. The apparatus of claim 1 wherein the authorization detection component is configured to communicate with the device through RFID communications to detect whether the device is authorized to receive DC power.

4. The apparatus of claim 1 wherein the authorization detection component is configured to communicate with the device through NFC communications to detect whether the device is authorized to receive DC power.

5. The apparatus of claim 1 wherein the authorization detection component is configured to communicate with the device through bluetooth communications to detect whether the device is authorized to receive DC power.

6. The apparatus of claim 1 wherein the authorization detection component is configured to communicate with the device through wireless communications to detect whether the device is authorized to receive DC power.

7. The apparatus of claim 1 wherein the authorization detection component is configured to detect whether the device includes a commutated electric motor.

8. The apparatus of claim 1 further including a charging circuit configured to accept AC line power and charge the power source with the AC line power.

9. The apparatus of claim 8 wherein the charging circuit is further configured to detect the presence of AC line power and supply the AC line power to the device through the power outlet when the presence of AC line power is detected.

10. The apparatus of claim 8 further configured to automatically supply DC power to the device if the AC line power is lost.

11. The apparatus of claim 8 further configured to supply the AC line power to the device if the device is not authorized to receive DC power.

12. The apparatus of claim 1 further configured to supply AC power to the device if the device is not authorized to receive DC power.

13. The apparatus of claim 12 wherein the AC power is AC line power.

14. The apparatus of claim 12 wherein the AC power is inverted DC power from the power source.

15. The apparatus of claim 12 wherein the AC power is AC line power, when AC line power is available, and wherein the AC power is inverted DC power from the power source, when AC line power is not available.

16. The apparatus of claim 1 further including the device, wherein the device includes the AC power plug.

17. The apparatus of claim 16 wherein the AC power plug includes an RFID tag, which the authorization detection component is configured to interrogate in order to detect whether the device is authorized to receive DC power.

18. The apparatus of claim 16 wherein the AC power plug is physically keyed, such that the AC power plug is operable with conventional wall receptacles and also operable with both the power outlet and the authorization detection component.

19. The apparatus of claim 16 wherein the AC power plug includes a validation component operable with the authorization detection component in order to validate that the device is authorized to receive DC power.

20. The apparatus of claim 1 wherein the authorization detection component is configured to communicate with the device optically to detect whether the device is authorized to receive DC power.

21. The apparatus of claim 1 wherein the authorization detection component is configured to communicate with the device magnetically to detect whether the device is authorized to receive DC power.

22. The apparatus of claim 1 wherein the authorization detection component is configured to communicate with the device through audible communications to detect whether the device is authorized to receive DC power.

23. The apparatus of claim 1 further configured to provide a constant regulated DC voltage output despite variable input voltage.

24. The apparatus of claim 1 further configured to provide a constant regulated DC voltage output despite variable input power.

25. The apparatus of claim 1 further configured to provide a regulated DC voltage output despite variable stored power.

26. A system comprising:

a device comprising a universal electric motor configured to operate on AC power;

an AC power cord operatively couple-able to the motor and comprising a plug for transferring power from a power source to the device, the plug comprising a first portion of an authorization component;

a DC power supply comprising—

a second portion of the authorization component;

a chemical-to-electrical power source; and

a power outlet coupled to the power source and configured to receive the plug,

the power supply configured to supply DC power to the device via the AC power cord only when the first portion of the authorization component communicates with the second portion of the authorization component thereby indicating that the device is authorized to receive DC power, based on electrical characteristics of the device.

27. A method of supplying DC Power to an AC device, comprising:

providing a device comprising a universal electric motor configured to operate on AC power, the device having an AC power cord operatively coupled to the motor and comprising a plug for transferring power from a power source to the device, the device further including a first portion of an authorization component;

providing a DC power supply comprising a chemical-to-electrical power source and a second portion of the authorization component, the power supply having a power outlet configured to receive the device plug; and

configuring the power supply to supply DC power to the device via the device plug only when the first portion of the authorization component communicates with the second portion of the authorization component thereby indicating that the device is authorized to receive DC power, based on electrical characteristics of the device.