POWER RECEPTION DEVICE AND CHARGING CONTROL PROGRAM

• US 20180097383A1
• Filed: 10/05/2017
• Published: 04/05/2018
• Est. Priority Date: 10/05/2016
• Status: Abandoned Application

• Current Assignee: Toshiba Tec Corporation (Toshiba Corporation)
• Original Assignee: Toshiba Tec Corporation (Toshiba Corporation)
• Inventors: Kato, Masakazu
• Application Number:
  US15/725,464
• Publication Number:
  US 20180097383A1
• Time in Patent Office: Days
• CPC Class Codes: B41J 2/35 providing current or voltage to the thermal head
• CPC Class Codes: B41J 29/13 Cases or covers
• CPC Class Codes: B41J 29/393 Devices for controlling or analysing the entire machine ; Controlling or analysing mechanical parameters involving printing of test patterns
• CPC Class Codes: H02J 50/10 using inductive coupling
• 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 7/0047 with monitoring or indicating devices or circuits
• CPC Class Codes: H02J 7/0049 Detection of fully charged condition
• CPC Class Codes: H02J 7/007 Regulation of charging or discharging current or voltage
• CPC Class Codes: H02J 7/04 Regulation of charging current or voltage

Abstract

According to one embodiment, there is provided a power reception device including: a power reception coil, a power reception unit, a notification unit, and a control unit. The power reception coil receives power from a power supply device in a non-contact manner. The power reception unit causes the received power as a charging current to flow to a load. The notification unit notifies that a relative position of the power reception device to the power supply device is inappropriate. The control unit starts charging by the charging current which is set to a first current value and controls the charging current so as to gradually increase the charging current. If the charging is stopped before the charging current reaches a second current value larger than the first current value, notification is performed that the relative position of the power reception device to the power supply device is inappropriate.

Claims

1. A power reception device comprising:

a power reception coil that receives power from a power supply device in a non-contact manner;

a power reception unit configured to cause the received power as a charging current to flow to a load;

a control unit configured to start charging by the charging current which is set to a first current value, to control the charging current so as to increase the charging current, and to notify a notification unit that a relative position of the power reception device to the power supply device is inappropriate if the charging stops before the charging current reaches a second current value larger than the first current value.

2. The device according to claim 1,

wherein the control unit calculates charging efficiency based on a current value of the charging current when the charging stops and notifies the notification unit of the charging efficiency.

3. The device according to claim 1,

wherein the notification unit displays the relative position of the power reception device to the power supply device and the control unit calculates the relative position based on the current value of the charging current when the charging stops and notifies the notification unit of the relative position.

4. The device according to claim 1,

wherein the control unit increases the charging current by a predetermined amount at predetermined time intervals.

5. The device according to claim 1,

wherein the control unit starts the charging from the current value of the charging current which is set when the charging stops if the charging starts again by the relative position being changed after the charging stops.

6. The device according to claim 1,

wherein the load comprises a secondary battery.

7. The device according to claim 1,

wherein the load comprises a lithium ion battery.

8. A method for controlling a power reception device which charges power in a non-contact manner, the method comprising:

receiving power;

causing the received power as a charging current to flow to a load;

starting charging by the charging current which is set to a first current value;

controlling the charging current so as to increase the charging current; and

notifying a notification unit that a relative position of the power reception device to a power supply device is inappropriate if the charging stops before the charging current reaches a second current value larger than the first current value.

9. The method according to claim 8 further comprising:

calculating charging efficiency based on a current value of the charging current when the charging stops; and

notifying the notification unit of the charging efficiency.

10. The method according to claim 8 further comprising:

displaying the relative position of the power reception device to the power supply device;

calculating the relative position based on the current value of the charging current when the charging stops; and

notifying the notification unit of the relative position.

11. The method according to claim 8 further comprising:

increasing the charging current by a predetermined amount at predetermined time intervals.

12. The method according to claim 8 further comprising:

starting the charging from the current value of the charging current which is set when the charging stops if the charging is started again by the relative position being changed after the charging stops.

13. A printer comprising a printing section and a power reception device, the power reception device comprising:

a power reception coil that receives power from a power supply device in a non-contact manner;

a power reception unit configured to cause the received power as a charging current to flow to a load;

a control unit configured to start charging by the charging current which is set to a first current value, to control the charging current so as to increase the charging current, and to notify a notification unit that a relative position of the power reception device to the power supply device is inappropriate if the charging stops before the charging current reaches a second current value larger than the first current value.

14. The printer according to claim 13,

wherein the control unit calculates charging efficiency based on a current value of the charging current when the charging stops and notifies the notification unit of the charging efficiency.

15. The printer according to claim 13,

wherein the notification unit displays the relative position of the power reception device to the power supply device and the control unit calculates the relative position based on the current value of the charging current when the charging stops and notifies the notification unit of the relative position.

16. The printer according to claim 13,

wherein the control unit increases the charging current by a predetermined amount at predetermined time intervals.

17. The printer according to claim 13,

wherein the control unit starts the charging from the current value of the charging current which is set when the charging stops if the charging starts again by the relative position being changed after the charging stops.

18. The printer according to claim 13,

wherein the load comprises a secondary battery.

19. The printer according to claim 13,

wherein the load comprises a lithium ion battery.

20. The printer according to claim 13,

wherein the printer is a portable printer.