Electric power supply apparatus, electric power receiving apparatus, method of controlling electric power supply apparatus, and method of controlling electric power receiving apparatus

• US 10,014,708 B2
• Filed: 06/26/2013
• Issued: 07/03/2018
• Est. Priority Date: 07/06/2012
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Inoue, Hiroshi, Hokyo, Tomoaki, Nagamine, Kazuhide
• Primary Examiner(s): Fureman, Jared
• Assistant Examiner(s): Yeshaw, Esayas
• Application Number:
  US14/412,997
• Publication Number:
  US 20150162778A1
• Time in Patent Office: 1,833 Days
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/402 the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H02J 7/00036 Charger exchanging data with battery
• CPC Class Codes: H02J 7/00047 with provisions for charging different types of batteries
• CPC Class Codes: H02J 7/02 for charging batteries from ac mains by converters

Abstract

The present invention provides a technique to control a distribution of electric power depending on electric power consumption of each of a plurality of electric power receiving apparatuses. An electric power supply apparatus includes an acquisition unit configured to acquire information associated with electric power consumption of each of the plurality of electric power receiving apparatuses, a determination unit configured to determine the distribution of electric power to the plurality of electric power receiving apparatuses based on the information acquired by the acquisition unit such that a greater amount of distribution of electric power is assigned to an electric power receiving apparatus having greater electric power consumption, and an electric power supply unit configured to supply electric power to each of the plurality of electric power receiving apparatuses according to the distribution of electric power determined by the determination unit.

Claims

1. An electric power supply apparatus comprising:

a detection unit configured to detect one or more electric power receiving apparatuses;

an acquisition unit configured to acquire state information associated with a state of each of a plurality of electric power receiving apparatuses in a case where the detection unit detects the plurality of power receiving apparatuses, and the acquisition unit configured not to acquire state information of one electric power receiving apparatus in a case where the detection unit detects the one electric power receiving apparatus, wherein the state includes a first state and a second state lower than the first state in power consumption;

a determination unit configured to;

determine, in a case where the detection unit detects a plurality of electric power receiving apparatuses, an amount of electric power to be supplied to the plurality of electric power receiving apparatuses based on the state information acquired by the acquisition unit such that a greater amount of electric power is supplied to a first electric power receiving apparatus among the plurality of electric power receiving apparatuses in a case where state information for the first electric power receiving apparatus indicates the first state and state information for other electric power receiving apparatuses among the plurality of electric power receiving apparatuses indicates the second state in comparison with a case where state information for all of the plurality of electric power receiving apparatuses indicates the second state, and

determine, in a case where the detection unit detects one electric power receiving apparatus, an amount of electric power to be supplied to the one electric power receiving apparatus not based on state information of the one electric power receiving apparatus; and

an electric power supply unit configured to supply electric power to each of one or more electric power receiving apparatuses according to a determination by the determination unit.

2. The electric power supply apparatus according to claim 1, wherein the determination unit determines a length of electric power supply time for each of the plurality of electric power receiving apparatuses based on the state information acquired by the acquisition unit.

3. The electric power supply apparatus according to claim 2, wherein in a case where the electric power supply unit supplies electric power to the first electric power receiving apparatus and a second electric power receiving apparatus and the state information for the second electric power receiving apparatus indicates the first state and the state information for the first electric power receiving apparatus is the second state, the determination unit determines the amount of electric power to be supplied to the plurality of electric power receiving apparatuses such that the length of the electric power supply time for the second electric power receiving apparatus is greater than the length of the electric power supply time for the first electric power receiving apparatus.

4. The electric power supply apparatus according to claim 1, further comprising a notification unit configured to notify, when a change of electric power amount to be supplied to the electric power receiving apparatus is to occur, at least one of the plurality of electric power receiving apparatuses of the change.

5. The electric power supply apparatus according to claim 1, wherein in a case where the acquisition unit does not acquire the state information of a particular electric power receiving apparatus among the plurality of electric power receiving apparatuses, the determination unit determines an amount of electric power to be supplied to the particular electric power receiving apparatus according to a predetermined distribution of electric power.

6. The electric power supply apparatus according to claim 1, wherein in a case where the acquisition unit does not acquire the state information of a particular electric power receiving apparatus among the plurality of electric power receiving apparatuses, the determination unit determines a distribution of electric power to the particular electric power receiving apparatus by assuming that electric power consumption of the particular electric power receiving apparatus is equal to an average of electric power consumption of remaining electric power receiving apparatuses.

7. The electric power supply apparatus according to claim 1, further comprising a receiving unit configured to receive battery information indicating a remaining battery charge of each of the plurality of electric power receiving apparatuses.

8. The electric power supply apparatus according to claim 7, wherein the determination unit determines an amount of the electric power to be supplied to each of the plurality of electric power receiving apparatuses according to the battery information received by the receiving unit in addition to the state information acquired by the acquisition unit, and the electric power supply unit supplies electric power according to the determination by the determination unit.

12. A non-transitory computer-readable storage medium which stores a program configured to cause a computer to operate as the electric power supply apparatus according to claim 1.

14. The electric power supply apparatus according to claim 1, further comprising a detection unit configured to detect a change of the state of at least one of the plurality of electric power receiving apparatuses based on the state information that is acquired by the acquisition unit according to a predetermined interval, and wherein the determination unit determines, according to the detection, an electric power to be supplied to the plurality of electric power receiving apparatuses.

15. The electric power supply apparatus according to claim 1, wherein the acquisition unit does not request the state information from an electric power receiving apparatus if the detection unit detects only one electric power receiving apparatus and the acquisition unit requests the state information from each of the plurality of electric power receiving apparatuses if the detection unit detects more than one electric power receiving apparatus.

9. An electric power supply apparatus comprising:

a detection unit configured to detect one or more electric power receiving apparatuses;

an acquisition unit configured to acquire electric power consumption of each of a plurality of electric power receiving apparatuses in a case where the detection unit detects the plurality of power receiving apparatuses, and the acquisition unit configured not to acquire state information of one electric power receiving apparatus in a case where the detection unit detects the one electric power receiving apparatus;

a determination unit configured to;

determine, in a case where the detection unit detects a plurality of electric power receiving apparatuses, a length of an electric power supply time for each of the plurality of electric power receiving apparatuses according to the electric power consumption information of each of the plurality of electric power receiving apparatuses, and

determine, in a case where the detection unit detects one electric power receiving apparatus, a length of an electric power supply time for the one electric power receiving apparatus not based on state information of the one electric power receiving apparatus; and

an electric power supply unit configured to supply electric power to each of one or more electric power receiving apparatuses based on the length of the electric power supply time determined by the determination unit.

13. A non-transitory computer-readable storage medium which stores a program configured to cause a computer to operate as the electric power supply apparatus according to claim 9.

10. A method of controlling an electric power supply apparatus, comprising:

detecting one or more electric power receiving apparatuses;

acquiring state information associated with a state of each of a plurality of electric power receiving apparatuses in a case where the detecting detects the plurality of power receiving apparatuses, and not acquiring state information of one electric power receiving apparatus in a case where the detecting detects the one electric power receiving apparatus, wherein the state includes a first state and a second state lower than the first state in power consumption;

determining, in a case where the detecting detects a plurality of electric power receiving apparatuses, an amount of electric power to be supplied to the plurality of electric power receiving apparatuses based on the acquired state information such that a greater amount of electric power is supplied to a first electric power receiving apparatus among the plurality of electric power receiving apparatuses in a case where state information for the first electric power receiving apparatus indicates the first state and state information for other electric power receiving apparatuses among the plurality of electric power receiving apparatuses indicates the second state in comparison with a case where state information for all of the plurality of electric power receiving apparatuses indicates the second state;

determining, in a case where the detecting detects one electric power receiving apparatus, an amount of electric power to be supplied to the one electric power receiving apparatus not based on state information of the one electric power receiving apparatus; and

supplying electric power to each of one or more electric power receiving apparatuses according to a determination by the determining.

11. A method of controlling an electric power supply apparatus, comprising:

detecting one or more electric power receiving apparatuses;

acquiring electric power consumption of each of a plurality of electric power receiving apparatuses in a case where the detecting detects the plurality of power receiving apparatuses, and not acquiring state information of one electric power receiving apparatus in a case where the detecting detects the one electric power receiving apparatus;

determining, in a case where the detecting detects a plurality of electric power receiving apparatuses, a length of an electric power supply time for each of the plurality of electric power receiving apparatuses according to the electric power consumption information of each of the plurality of electric power receiving apparatuses;

determining, in a case where the detecting detects one electric power receiving apparatus, a length of an electric power supply time for the one electric power receiving apparatus not based on state information of the one electric power receiving apparatus; and

supplying electric power to each of one or more electric power receiving apparatuses based on the determined length of the electric power supply time.