POWER TRANSMISSION DEVICE, POWER TRANSMISSION METHOD, AND POWER TRANSMISSION SYSTEM

• US 20150200716A1
• Filed: 03/24/2015
• Published: 07/16/2015
• 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
• Granted Patent: US 9,698,874 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H02J 50/05 using capacitive coupling
• CPC Class Codes: H02J 50/12 of the resonant type
• 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: H02J 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction
• 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

Abstract

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

Claims

1. A power transmission device, comprising:

a communication unit configured to communicate with a power receiving device;

a power transmitting unit configured to transmit an amount of power wirelessly to the power receiving device; and

a controller unit configured to cause the communication unit to send a request for information indicating a power reception capability of the power receiving device and receive a response bearing the information corresponding to the request,

wherein the controller is further configured to determine the amount of power to be transmitted to the power receiving device based on the information.

2. A power reception device, comprising:

a communication unit configured to communicate with a power transmitting device;

a power receiving unit configured to receive an amount of power wirelessly from the power transmitting device; and

a controller unit configured to cause the communication unit to receive a request for information indicating a power reception capability of the power reception device and send a response bearing the information corresponding to the request,

wherein the amount of power is determined based on the information.

3. A power transmission method, comprising:

through a communication channel, sending a request for information indicating a power reception capability of a power receiving device;

through the communication channel, receiving a response bearing the information corresponding to the request; and

determining, based on the information, an amount of power to be transmitted wirelessly to the power receiving device.

4. A power reception method, comprising:

through a communication channel, receiving a request for information indicating a power reception capability of a power receiving device;

through the communication channel, sending, to a power transmitting device, a response bearing the information corresponding to the request; and

receiving an amount of power, which is determined based on the information, transmitted wirelessly from the power transmitting device.