POWER SUPPLYING DEVICE AND POWER RECEIVING DEVICE

• US 20160248261A1
• Filed: 10/23/2014
• Published: 08/25/2016
• Est. Priority Date: 11/14/2013
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: TOKUDA, YOSHIICHI, MORITA, TADASHI
• Granted Patent: US 10,193,350 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G05B 15/02 electric
• CPC Class Codes: H02J 1/00 Circuit arrangements for dc mains or dc distribution networks
• CPC Class Codes: H02J 2207/40 adapted for charging from various sources, e.g. AC, DC or multivoltage
• CPC Class Codes: H02J 2310/14 The load or loads being home appliances
• CPC Class Codes: H02J 3/14 by switching loads on to, or off from, network, e.g. progressively balanced loading
• CPC Class Codes: H02J 4/00 Circuit arrangements for mains or distribution networks not specified as ac or dc
• CPC Class Codes: H02J 7/34 Parallel operation in networks using both storage and other dc sources, e.g. providing buffering H02J7/14 takes precedence
• CPC Class Codes: H02J 9/06 with automatic change-over , e.g. UPS systems

Abstract

[Object] To propose a power supplying device capable of efficiently supplying power through a direct-current power line when an anomaly occurs in external power supply.

[Solution] Provided is a power supplying device including: a reception unit configured to receive, from another device, a request for power supply performed through a direct-current bus line through which DC power flows; a power determination unit configured to determine whether power supply is possible, on the basis of the request for power supply; and a power control unit configured to, when the power determination unit determines that the power supply is possible, preform control to determine presence or absence, and in a case of the absence of the control right, acquire the control right and notify the other device of the acquisition of the control right.

Claims

1. A power supplying device comprising:

a reception unit configured to receive, from another device, a request for power supply performed through a direct-current bus line through which DC power flows;

a power determination unit configured to determine whether power supply is possible, on the basis of the request for power supply;

a transmission unit configured to, when the power determination unit determines that the power supply is possible, transmits a response to the other device, as a candidate for power supply; and

a power control unit configured to preform control to determine presence or absence of a right to control the direct-current bus line, and in a case of the absence of the control right, acquire the control right and notify the other device of the acquisition of the control right.

2. The power supplying device according to claim 1,

wherein when the other device already have the control right, the power control unit performs control to transmit a response to the device requesting power and the device having the control right, as the candidate for power supply.

3. The power supplying device according to claim 1,

wherein when the power supplying device has acquired the control right, then if there is not a device to which power is supplied through the direct-current bus line, the power control unit performs control to notify the other device of abandonment of the control right.

4. The power supplying device according to claim 1,

wherein when the power supplying device has acquired the control right, and when the other device newly request power supply through the direct-current bus line, the power control unit performs control to notify the device that supplies power in response to the request for power supply of a limitation condition for power supply through the direct-current bus line.

5. The power supplying device according to claim 1,

wherein the power determination unit determines whether power supply is possible in response to the request for power supply, on the basis of priority.

6. The power supplying device according to claim 5,

wherein when power is being supplied to the other device, then if the request for power supply is newly transmitted from another device having higher priority, the power control unit performs control to decrease the amount of supply to the other device to which power is being supplied.

7. The power supplying device according to claim 1, further comprising:

a battery configured to store power,

wherein the power determination unit determines whether power supply is possible, on the basis of the amount of power stored in the battery.

8. The power supplying device according to claim 1,

wherein the power control unit determines whether supply is possible, on the basis of a past record of supply to the other device that has transmitted a request for power supply.

9. A power receiving device comprising:

a transmission unit configured to transmit a request for power supply performed through a direct-current bus line through which DC power flows, to other devices, when a predetermined condition is satisfied; and

a power control unit configured to perform control to, when receiving a response from the other devices capable of supplying power as candidates for power supply, select at least one from the other devices that have transmitted responses, as a candidate for power supply, and transmit a request for power supply to the other device selected.

10. The power receiving device according to claim 9,

wherein the power control unit, when ending reception of power from the other devices, performs control to notify another device having the right to control the direct-current bus line of the end of power reception.

11. The power receiving device according to claim 9,

wherein the power control unit performs control to receive power from the other device which is the candidate for power supply in a manner that the rating of the direct-current bus line is not exceeded.

12. The power receiving device according to claim 9,

wherein when the power receiving device is receiving power supply from the other devices, then if the request for power supply is newly transmitted from another device having higher priority, the power control unit performs control to agree with the other devices from which power supply is being received on decrease in the amount of supply.

13. The power receiving device according to claim 9, further comprising:

a battery configured to store power; and

a power determination unit configured to, when the amount of power stored in the battery is smaller than or equal to a predetermined amount, that is, when the predetermined condition is satisfied, cause the transmission unit to transmit a request for power supply through the direct-current bus line to the other devices.

14. The power receiving device according to claim 9,

wherein the power control unit determines whether the other device is selected as the candidate for power supply, on the basis of a past record of supply from the other device which, as a for power supply, have transmitted a response.