Power transmission device, power transmission method, and power transmission system

• US 10,003,385 B2
• Filed: 08/01/2016
• Issued: 06/19/2018
• Est. Priority Date: 02/21/2011
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Miyabayashi, Naoki, Ishikawa, Yasuharu
• Primary Examiner(s): Jiang, Yong Hang
• Application Number:
  US15/225,277
• Publication Number:
  US 20160344453A1
• Time in Patent Office: 687 Days
• Field of Search: 340 42, 340 101, 340 1034, 340 1323, 340 1324, 340 1325
• CPC Class Codes: H02J 50/05 using capacitive coupling
• 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 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H04B 5/24 Inductive coupling
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer
• CPC Class Codes: H04W 52/283 Power depending on the position of the mobile
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A power transmission device includes a communication unit that transmits a power capability information transmission request via a communication channel and receives power capability information in response to the power capability information transmission request. The power transmission device also includes a processing unit that sets a parameter based on the power capability information. Further, the power transmission device includes a power transmission unit that wirelessly transmits power using the parameter. The communication unit transmits the power capability information transmission request before the power transmission unit wirelessly transmits the power.

Claims

1. A power transmission device, comprising:

a communication unit configured to;

transmit a power capability information transmission request via a communication channel;

receive power capability information based on the power capability information transmission request;

a processing unit configured to;

set a parameter based on the received power capability information,

wherein the power capability information indicates a transmission type and a first parameter type;

calculate a plurality of power transmission efficiencies for each of a plurality of parameters of the first parameter type; and

set a first standard range of efficiency for transmission of power based on a maximum power transmission efficiency of the plurality of power transmission efficiencies; and

a power transmission unit configured to wirelessly transmit the power based on the parameter,

wherein the transmission of the power capability information transmission request occurs prior to the transmission of the power.

2. The power transmission device according to claim 1,

wherein the transmission type is at least one of an electromagnetic induction, electric waves, a magnetic-field resonance, or an electric-field resonance, and

wherein the power transmission unit is further configured to wirelessly transmit the power based on the at least one of the electromagnetic induction, the electric waves, the magnetic-field resonance, or the electric-field resonance.

3. The power transmission device according to claim 1,

wherein the first parameter type is at least one of a frequency, a voltage, or an azimuth angle, and

wherein the power transmission unit is further configured to wirelessly transmit the power based on the at least one of the frequency, the voltage, or the azimuth angle.

4. The power transmission device according to claim 1, further comprising:

a storage unit configured to store transmission power capability information,

wherein the processing unit is further configured to;

set the parameter based on a comparison of the first parameter type indicated by the received power capability information and a second parameter type indicated by the transmission power capability information; and

add the first parameter type indicated by the received power capability information to a parameter type list.

5. The power transmission device according to claim 1, wherein the communication channel is encrypted.

6. The power transmission device according to claim 1,

wherein the communication unit is further configured to receive first power reception amount information for the parameter upon the transmission of the power, and

wherein the processing unit is further configured to:

calculate a first power transmission efficiency of the plurality of power transmission efficiencies, based on the first power reception amount information, and

prohibit the transmission of the power based on the first power transmission efficiency that is less than a value.

7. The power transmission device according to claim 1,

wherein the communication unit is further configured to receive first power reception amount information for the parameter upon the transmission of the power, and

wherein the processing unit is further configured to:

calculate a second power transmission efficiency of the plurality of power transmission efficiencies, based on the first power reception amount information; and

generate parameter information that excludes the parameter, based on the second power transmission efficiency,

wherein the second power transmission efficiency is less than a value.

8. The power transmission device according to claim 7,

Wherein, based on reception of second power reception amount information for the parameter by the communication unit, the processing unit is further configured to calculated a third power transmission efficiency of the plurality of power transmission efficiencies, based on the second power reception amount information,

Wherein the processing unit is further configured to exclude the parameter from the parameter information based on the third power transmission efficiency that is less than the value, and

Wherein the value is a number of times in a period corresponding to the first power reception amount information and the second power reception amount information.

9. The power transmission device according to claim 8, wherein the processing unit is further configured to include the parameter in the parameter information upon the exclusion of the parameter from the parameter information.

10. The power transmission device according to claim 1,

wherein the parameter is within a power reception capability indicated by the power capability information,

wherein the communication unit is further configured to transmit parameter information,

wherein the communication unit is further configured to receive second power reception amount information upon the wireless transmission of the power by the power transmission unit, and

wherein the processing unit is further configured to:

calculate a plurality of fourth power transmission efficiencies of the plurality of parameters, based on the second power reception amount information,

set a second standard range of efficiency for the transmission of the power, based on the plurality of third fourth power transmission efficiencies, and

exclude one of the plurality of parameters from the parameter information based on a power transmission efficiency of third power transmission efficiencies of the one of the plurality of parameters that is outside the second standard range.

11. The power transmission device according to claim 10,

wherein the processing unit is further configured to calculate a power transmission unit price corresponding to the second standard range,

wherein the communication unit is further configured to transmit information indicating the power transmission unit price,

wherein the communication unit is further configured to receive a power transmission start request based on the information indicating the power transmission unit price.

12. The power transmission device according to claim 10, wherein, based on the power transmission efficiency of the third power transmission efficiencies of the one of the plurality of parameters that is outside the second standard range, the power transmission unit is further configured to stop the transmission of the power.

13. The power transmission device according to claim 1, wherein the communication unit is further configured to one of transmit or receive connection information to form of the communication channel via a non-contact communication based on a frequency carrier.

14. The power transmission device according to claim 13,

wherein the communication unit is further configured to transmit the power capability information transmission request via the non-contact communication,

wherein the communication unit is further configured to receive the power capability information via the non-contact communication, and

wherein the parameter is within a power reception capability indicated by the power capability information.

15. The power transmission device according to claim 1,

wherein the processing unit is further configured to generate parameter information indicating the parameter, based on parameter candidates of the power,

wherein the parameter information is corresponding to an environment where the power is transmitted, and

wherein the parameter information is set based on the power capability information.

16. A power transmission method, comprising:

transmitting a power capability information transmission request via a communication channel;

receiving power capability information based on the power capability information transmission request,

wherein the power capability information indicates a transmission type and a parameter type;

setting a parameter based on the received power capability information;

calculating a plurality of power transmission efficiencies for each of a plurality of parameters of the parameter type;

setting a standard range of efficiency for transmission of power based on a maximum power transmission efficiency of the plurality of power transmission efficiencies; and

wirelessly transmitting the power based on the parameter,

wherein the transmitting the power capability information transmission request occurs prior to the wirelessly transmitting the power.

17. A non-transitory computer-readable medium having stored thereon computer executable instructions that, when executed by a processor, cause a computer to execute operations, the operations comprising:

transmitting a power capability information transmission request via a communication channel;

receiving power capability information based on the power capability information transmission request,

wherein the power capability information indicates a transmission type and a parameter type;

setting a parameter based on the received power capability information;

calculating a plurality of power transmission efficiencies for each of a plurality of parameters of the parameter type;

setting a standard range of efficiency for transmission of power based on a maximum power transmission efficiency of the plurality of power transmission efficiencies; and

wirelessly transmitting the power based on the parameter,

wherein the transmitting the power capability information transmission request occurs prior to the wirelessly transmitting the power.

18. A power reception device, comprising:

a storage unit configured to store power capability information;

a communication unit configured to;

receive a power capability information transmission request via a communication channel,

transmit the power capability information based on the power capability information transmission request,

wherein the power capability information indicates a transmission type and a parameter type, and

receive parameter information based on the power capability information;

wherein a parameter is set based on the power capability information,

wherein a plurality of power transmission efficiencies are calculated for each of a plurality of parameters of the parameter type, and

wherein a standard range of efficiency for transmission of power is set based on a maximum power transmission efficiency of the plurality of power transmission efficiencies; and

a power reception unit configured to wirelessly receive power based on the parameter indicated by the parameter information,

wherein the reception of the power capability information transmission request occurs prior to the wireless reception of the power.