POWER TRANSMISSION CONTROL DEVICE, POWER TRANSMISSION DEVICE, POWER RECEIVING CONTROL DEVICE, POWER RECEIVING DEVICE, AND ELECTRONIC APPARATUS

• US 20100013320A1
• Filed: 07/09/2009
• Published: 01/21/2010
• Est. Priority Date: 07/16/2008
• Status: Active Grant

• Current Assignee: 138 East LCD Advancements Limited (Vector Capital Corporation)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: NAKASHIMA, Takahiko, KAMIYAMA, Masayuki, ONISHI, Kota, SHIOZAKI, Nobutaka
• Granted Patent: US 8,143,745 B2
• Time in Patent Office: Days
• US Class Current: 307/104
• CPC Class Codes: H01F 2038/143 for signals
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/60 responsive to the presence of foreign objects, e.g. detection of living beings
• 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

Abstract

A power transmission control device provided in a power transmission device included in a contactless power transmission system that transmits power by electromagnetically coupling a primary coil and a secondary coil from the power transmission device to a power receiving device so as to supply the power to a load on the power receiving device. The power transmission control device includes a controller that controls the power transmission control device, and a register section. The resister section includes a power receiving side information register that stores power receiving side information received from the power receiving device, and a power transmission side information register that stores power transmission side information The controller performs at least one of: an authentication processing of the power receiving device; a power transmission control of the contactless power transmission; and a communication processing between the power transmission device and the power receiving device based on the power receiving side information stored in the power receiving side information register and the power transmission side information stored in the power transmission side register.

Claims

1. A power transmission control device provided in a power transmission device included in a contactless power transmission system that transmits power by electromagnetically coupling a primary coil and a secondary coil from the power transmission device to a power receiving device so as to supply the power to a load on the power receiving device, the power transmission control device comprising:

a controller that controls the power transmission control device; and

a register section, the resister section including;

a power receiving side information register that stores power receiving side information received from the power receiving device; and

a power transmission side information register that stores power transmission side information, the controller performing at least one of;

an authentication processing of the power receiving device;

a power transmission control of the contactless power transmission; and

a communication processing between the power transmission device and the power receiving device based on the power receiving side information stored in the power receiving side information register and the power transmission side information stored in the power transmission side register.

2. The power transmission control device according to claim 1, the power receiving side information register including a power receiving side authentication information register that stores power receiving side authentication information received from the power receiving device, the power transmission side information register including a power transmission side authentication information register that stores power transmission side authentication information, and the controller performing the authentication processing based on the power receiving side authentication information and the power transmission side authentication information.

3. The power transmission control device according to claim 2, the power receiving side authentication information register storing power receiving side coil information, the power transmission side authentication information register storing power transmission side coil information, and the controller performing the authentication processing based on the power receiving side coil information and the power transmission side coil information.

4. The power transmission control device according to claim 1, the power receiving side information register including a power receiving side transmission condition information register that stores power receiving side transmission condition information received from the power receiving device, the power transmission side information register including a power transmission side transmission condition information register that stores power transmission side transmission condition information, and before a start of normal power transmission, the controller performing the power transmission control based on the power transmission side transmission condition information stored in the power transmission side transmission condition information register while after the start of the normal power transmission, the controller performing the power transmission control based on the power receiving side transmission condition information stored in the power receiving side transmission condition information register.

5. The power transmission control device according to claim 4, the controller performing the power transmission control after the start of the normal power transmission based on the power receiving side transmission condition information that is received from the power receiving device and stored in the power receiving side transmission condition information register before the start of the normal power transmission.

6. The power transmission control device according to claim 1, the power receiving side information register including a power receiving side communication condition information register that stores power receiving side communication condition information received from the power receiving device, the power transmission side information register including a power transmission side communication condition information register that stores power transmission side communication condition information, and before a start of normal power transmission, the controller performing the communication processing based on the power transmission side communication condition information stored in the power transmission side communication condition information register while after the start of the normal power transmission, the controller performing the communication processing based on the power receiving side communication condition information stored in the power receiving side communication condition information register.

7. The power transmission control device according to claim 6, the controller performing the communication processing after the start of the normal power transmission based on the power receiving side communication condition information that is received from the power receiving device and stored in the power receiving side communication condition information register before the start of the normal power transmission.

8. The power transmission control device according to claim 1, the power receiving side information register including a power receiving side corresponding function information register that stores power receiving side corresponding function information received from the power receiving device, the power transmission side information register including a power transmission side corresponding function information register that stores power transmission side corresponding function information, and the controller performing a setup processing of a usage function based on the power receiving side corresponding function information stored in the power receiving side corresponding function information register and the power transmission side corresponding function information stored in the power transmission side corresponding function information register.

9. The power transmission control device according to claim 1, in a test mode, the controller performing the authentication processing, the power transmission control, and the communication processing by using the power transmission side information stored in the power transmission side information resister without using the power receiving side information stored in the power receiving side information resister.

10. The power transmission control device according to claim 9, further comprising a host interface that communicates with a power transmission side host;

and the power transmission side information register including a plurality of registers, at least one of the plurality of the resisters being set to be switchable between two states giving the power transmission side host a write-permission and a write-prohibition, the write being performed through the host interface.

11. A power transmission device, comprising:

the power transmission control device according to claim 1; and

a power transmission section that generates an alternating voltage and supplies the voltage to the primary coil.

12. An electronic apparatus, comprising:

the power transmission device according to claim 11.

13. A power receiving control device provided in a power receiving device included in a contactless power transmission system that transmits power by electromagnetically coupling a primary coil and a secondary coil from a power transmission device to the power receiving device so as to supply the power to a load on the power receiving device, the power receiving control device comprising:

a controller that controls the power receiving control device; and

a register section, the register section including;

a power receiving side information register that stores power receiving side information; and

a power transmission side information register that stores power transmission side information received from the power transmission device, the controller performing at least one of an authentication processing of the power transmission device and a communication processing between the power transmission device and the power receiving device based on the power receiving side information stored in the power receiving side information register and the power transmission side information stored in the power transmission side information register.

14. The power receiving control device according to claim 13, the power receiving side information register including a power receiving side authentication information register that stores power receiving side authentication information, the power transmission side information register including a power transmission side authentication information register that stores power transmission side authentication information received from the power transmission device, and the controller performing the authentication processing based on the power receiving side authentication information and the power transmission side authentication information.

15. The power receiving control device according to claim 14, the power receiving side authentication information register storing power receiving side coil information, the power transmission side authentication information register storing power transmission side coil information, and the controller performing the authentication processing based on the power receiving side coil information and the power transmission side coil information.

16. The power receiving control device according to claim 13, the power receiving side information register including a power receiving side corresponding function information register that stores power receiving side corresponding function information, the power transmission side information register including a power transmission side corresponding function information register that stores power transmission side corresponding function information received from the power transmission device, and the controller performing a setup processing of a usage function based on the power receiving side corresponding function information stored in the power receiving side corresponding function information register and the power transmission side corresponding function information stored in the power transmission side corresponding function information register.

17. A power receiving device, comprising:

the power receiving control device according to claim 13; and

a power receiving section that converts an induced voltage of the secondary coil into a direct current voltage.

18. An electronic apparatus, comprising:

the power receiving device according to claim 17; and

a load to which power is supplied by the power receiving device.