Control apparatus

• US 10,097,042 B2
• Filed: 10/23/2014
• Issued: 10/09/2018
• Est. Priority Date: 10/28/2013
• Status: Active Grant

• Current Assignee: Kyocera Corporation
• Original Assignee: Kyocera Corporation
• Inventors: Kinoshita, Kenta, Mesaki, Shigeru
• Primary Examiner(s): Puentes, Daniel
• Application Number:
  US15/032,479
• Publication Number:
  US 20160261145A1
• Time in Patent Office: 1,447 Days
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/40 using two or more transmitting or receiving devices H02J50/50 takes precedence
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• 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

Abstract

A control apparatus used in a power transmission system for transmitting power with a magnetic resonance manner to a power reception apparatus from a power transmission apparatus comprises a power control unit configured to control a power transmission state in which transmission power of the power transmission apparatus is controlled in a state in which a power transmission target power reception apparatus is detected, and a test power transmission state in which transmission power of the power transmission apparatus is controlled in a state in which the power transmission target power reception apparatus is not detected.

Claims

1. A control apparatus used in a power transmission system for transmitting power with a magnetic resonance manner to a power reception apparatus from a power transmission apparatus, the control apparatus comprising

a power controller configured to

control a power transmission state in which transmission power of the power transmission apparatus is controlled in a state in which a power transmission target power reception apparatus is detected, and a test power transmission state in which transmission power of the power transmission apparatus is controlled in a state in which the power transmission target power reception apparatus is not detected,

store a plurality of identifiers,

receive a signal including an authentication identifier from the power transmission target power reception apparatus, the signal being sent by using the power transmitted from the power transmission apparatus in the test power transmission state, and

transition to the power transmission state from the test power transmission state upon a determination that the authentication identifier included in the received signal matches one of the stored plurality of identifiers.

2. The control apparatus according to claim 1, wherein

the power controller transitions to the test power transmission state, depending on a predetermined trigger.

3. The control apparatus according to claim 2, wherein

the predetermined trigger is occurrence of at least one event of an event in which the power transmission apparatus is started, an event in which a state continues over a certain period of time in which the power transmission apparatus does not transmit power, and user operation.

4. The control apparatus according to claim 1, wherein

a power transmission method in the test power transmission state is different from a power transmission method in the power transmission state.

5. The control apparatus according to claim 1, wherein

the power transmission target power reception apparatus has no power storage unit.

6. A control apparatus used in a power transmission system for transmitting power with a magnetic resonance manner to a power reception apparatus from a power transmission apparatus, the control apparatus comprising

a power controller configured to

control a power transmission state in which power transmission of the power transmission apparatus is controlled in a state in which a power transmission target power reception apparatus is detected, and a standby state in which the transmission of transmission power of the power transmission apparatus is waited in a state in which the power transmission to the power transmission target power reception apparatus is ready,

control transmission power of the power transmission apparatus to transmit power at reference power in the power transmission state,

transitions to the standby state from the power transmission state, depending on a predetermined trigger, wherein

the predetermined trigger is occurrence of an event in which transmission power of the power transmission apparatus is below a stop threshold value smaller than the reference power.

7. The control apparatus according to claim 6, wherein

the predetermined trigger is occurrence of an event in which the power transmission target power reception apparatus is no longer detected in the power transmission state.

8. The control apparatus according to claim 7, wherein

the power transmission target power reception apparatus is an authenticated power reception apparatus.

9. The control apparatus according to claim 7, wherein

the power controller controls transmission power of the power transmission apparatus to transmit power at reference power in the power transmission state, and

the power controller adjusts a resonance frequency of the power transmission apparatus when transmission power of the power transmission apparatus is below an adjustment threshold value smaller than the reference power in the power transmission state, and

the predetermined trigger is occurrence of an event in which transmission power of the power transmission apparatus is below a stop threshold value smaller than the adjustment threshold value.

10. The control apparatus according to claim 7, wherein

the predetermined trigger is occurrence of an event in which temperature of a component constituting the power transmission apparatus is above a predetermined threshold value in the power transmission state.