Wireless charging system with user determined removal

• US 9,985,459 B2
• Filed: 09/30/2015
• Issued: 05/29/2018
• Est. Priority Date: 09/30/2015
• Status: Active Grant

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Lawrenson, Matthew John, Andersson, Lars, Burkert, Till, Nolan, Julian Charles, Strm, Jacob
• Primary Examiner(s): Hernandez, William
• Application Number:
  US14/787,713
• Publication Number:
  US 20170163070A1
• Time in Patent Office: 972 Days
• Field of Search: 307104
• CPC Class Codes: H02J 50/10 using inductive coupling
• 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 7/00045 Authentication, i.e. circuits for checking compatibility between one component, e.g. a battery or a battery charger, and another component, e.g. a power source
• CPC Class Codes: H02J 7/0044 specially adapted for holding portable devices containing batteries H02J7/0045 takes precedence
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

A wirelessly chargeable device, such as a smartphone, and a wireless-charging device are provided. The wirelessly chargeable device and the wireless-charging device comprise holding means for generating an attractive force between the wirelessly chargeable device and a charging surface of the wireless-charging device, so as to prevent displacement of the wirelessly chargeable device when placed on the charging surface, and processing means operative to release the wirelessly chargeable device from the charging surface in response to determining that a user intends to remove the wirelessly chargeable device from the charging surface. Advantageously, the wirelessly chargeable device may to be placed on a charging surface which is substantially vertical when in operation, effectively eliminating the need for manually securing the wirelessly chargeable device in order to prevent the wirelessly chargeable device from falling.

Claims

1. A wirelessly chargeable device, comprising:

a holder for generating an attractive force between the wirelessly chargeable device and a charging surface of a wireless-charging device, so as to prevent displacement of the wirelessly chargeable device when placed on the charging surface; and

a processing unit being operative to;

(i) determine whether a user intends to remove the wirelessly chargeable device from the charging surface based on an input received from the user, and

(ii) as a result of determining that the user intends to remove the wirelessly chargeable device from the charging surface, release the wirelessly chargeable device from the charging surface.

2. The wirelessly chargeable device according to claim 1, further comprising a user-interface for controlling the wirelessly chargeable device, the processing unit being operative to determine that the user intends to remove the wirelessly chargeable device by receiving a release instruction from the user via the user-interface.

3. The wirelessly chargeable device according to claim 1, further comprising a pressure sensor for measuring a pressure applied to the wirelessly chargeable device,

and the processing unit being further operative to:

(i) compare the measured pressure to a threshold value, and

(ii) as a result of determining that the measured pressure exceeds the threshold value, determine that the user intends to remove the wirelessly chargeable device.

4. The wirelessly chargeable device according to claim 1, further comprising touch sensors for detecting a hand of the user touching the wirelessly chargeable device, the processing unit being operative to determine that the user intends to remove the wirelessly chargeable device by detecting that the wirelessly chargeable device is gripped by a hand of the user.

5. The wirelessly chargeable device according to claim 1, the processing unit being operative to release the wirelessly chargeable device by controlling the holder to reduce the attractive force.

6. The wirelessly chargeable device according to claim 5, the processing unit being further operative to control the unit holder to increase the attractive force in response to detecting that the wirelessly chargeable device is being placed on the charging surface.

7. The wirelessly chargeable device according to claim 1, further being configured to change its shape, the processing unit being operative to release the wirelessly chargeable device by controlling the shape of the wirelessly chargeable device so as to reduce a contact area between the wirelessly chargeable device and the charging surface.

8. The wirelessly chargeable device according to claim 1, further comprising a communication unit for effecting wireless communications with the wireless-charging device, the processing unit being operative to release the wirelessly chargeable device by transmitting, via the communication unit, a release request to the wireless-charging device.

9. The wirelessly chargeable device according to claim 1, wherein the holder comprises a magnetic member.

10. The wirelessly chargeable device according to claim 1, wherein the holder comprises an adhesive surface which is provided on a face of the wirelessly chargeable device facing the charging surface when placed on the charging surface.

11. The wirelessly chargeable device according to claim 1, wherein the charging surface is substantially vertical.

12. The wirelessly chargeable device according to claim 1, wherein the wirelessly chargeable device is one of a mobile phone, a mobile terminal, a smartphone, a tablet, a personal digital assistant, a wearable device, or a watch.

13. A wireless-charging device, comprising:

a charging surface for receiving a wirelessly chargeable device;

a holder for generating an attractive force between the wirelessly chargeable device and the charging surface, so as to prevent displacement of the wirelessly chargeable device when placed on the charging surface; and

a processing unit being operative to;

(i) determine whether a user intends to remove the wirelessly chargeable device from the charging surface based on an input received from the user; and

(ii) as a result of determining that the user intends to remove the wirelessly chargeable device from the charging surface, release the wirelessly chargeable device from the charging surface.

14. The wireless-charging device according to claim 13, further comprising a communication unit for effecting wireless communications with the wirelessly chargeable device, the processing unit being operative to determine that the user intends to remove the wirelessly chargeable device by receiving, via the communication unit, a release request from the wirelessly chargeable device.

15. The wireless-charging device according to claim 13, further comprising a pressure sensor for measuring a pressure applied to the charging surface,

and the processing unit being further operative to:

(i) compare the measured pressure to a threshold value, and

(ii) as a result of determining that the measured pressure exceeds the threshold value, determine that the user intends to remove the wirelessly chargeable device.

16. The wireless-charging device according to claim 13, the processing unit being operative to release the wirelessly chargeable device by controlling the holder to reduce the attractive force.

17. The wireless-charging device according to claim 16, the processing unit being further operative to control the holder to increase the attractive force in response to detecting that the wirelessly chargeable device is being placed on the charging surface.

18. The wireless-charging device according to claim 13, further comprising one or more protrusible members which are provided on the charging surface, the processing unit being operative to release the wirelessly chargeable device by controlling the one or more protrusible members to protrude.

19. The wireless-charging device according to claim 13, wherein the holder comprises a magnetic member.

20. The wireless-charging device according to claim 13, wherein the holder comprises an adhesive surface which is provided on the charging surface.

21. The wireless-charging device according to claim 13, wherein the charging surface is substantially vertical when the wireless-charging device is in operation.

22. The wireless-charging device according to claim 13, the wirelessly chargeable device being one of a mobile phone, a mobile terminal, a smartphone, a tablet, a personal digital assistant, a wearable device, or a watch.

23. A method of charging a wirelessly chargeable device held by an attractive force generated between the wirelessly chargeable device and a charging surface of a wireless-charging device, so as to prevent displacement of the wirelessly chargeable device when placed on the charging surface, the method comprising:

determining whether a user intends to remove the wirelessly chargeable device from the charging surface based on an input received from the user; and

as a result of determining that the user intends to remove the wirelessly chargeable device from the charging surface, releasing the wirelessly chargeable device from the charging surface.

24. The method according to claim 23, wherein the determining that the user intends to remove the wirelessly chargeable device comprises receiving a release instruction from the user via a user-interface of the wirelessly chargeable device.

25. The method according to claim 23, wherein the determining that the user intends to remove the wirelessly chargeable device comprises:

retrieving one or more images captured by a camera having a field of view which is oriented away from the charging surface when the wirelessly chargeable device is placed on the charging surface; and

detecting, through image processing the one or more captured images, a release gesture performed by a body part of the user.

26. The method according to claim 23, wherein the determining that the user intends to remove the wirelessly chargeable device comprises:

measuring a pressure applied to the wirelessly chargeable device;

comparing the measured pressure to a threshold value; and

as a result of determining that the measured pressure exceeds the threshold value, determining that the user intends to remove the wirelessly chargeable device.

27. The method according to claim 23, wherein the determining that the user intends to remove the wirelessly chargeable device comprises detecting that the wirelessly chargeable device is gripped by a hand of the user.

28. The method according to claim 23, wherein the releasing the wirelessly chargeable device comprises controlling the charging surface to reduce the attractive force.

29. The method according to claim 28, further comprising controlling the charging surface to increase the attractive force in response to detecting that the wirelessly chargeable device is being placed on the charging surface.

30. The method according to claim 23, wherein the releasing the wirelessly chargeable device comprises controlling one or more protrusible members, which are provided on a face of the wirelessly chargeable device facing the charging surface when placed on the charging surface, to protrude.

31. The method according to claim 23, wherein the releasing the wirelessly chargeable device comprises controlling one or more protrusible members, which are provided on the charging surface, to protrude.

32. The method according to claim 23, wherein the releasing the wirelessly chargeable device comprises controlling a shape of the wirelessly chargeable device so as to reduce a contact area between the wirelessly chargeable device and the charging surface.

33. The method according to claim 23, wherein the releasing the wirelessly chargeable device comprises transmitting, via a communication unit for effecting wireless communications with the wireless-charging device, a release request to the wireless-charging device.

34. The method according to claim 23, wherein the determining that the user intends to remove the wirelessly chargeable device comprises receiving, via a communication unit for effecting wireless communications with the wirelessly chargeable device, a release request from the wirelessly chargeable device.

35. The method according to claim 23, further comprising authenticating the user in response to detecting that the user intends to remove the wirelessly chargeable device, wherein the wirelessly chargeable device is only released if the user is successfully authenticated.

36. The method according to claim 23, wherein the charging surface is substantially vertical.

37. The method according to claim 23, the wirelessly chargeable device being one of a mobile phone, a mobile terminal, a smartphone, a tablet, a personal digital assistant, a wearable device, or a watch.

38. The method according to claim 23, being performed by the wirelessly chargeable device.

39. The method according to claim 23, being performed by the wireless-charging device.

40. A computer program comprising computer-executable instructions for causing a device to perform the method according to claim 23, when the computer-executable instructions are executed on a processing unit comprised in the device.

41. A computer program product comprising a non-transitory computer-readable storage medium, the computer-readable storage medium having the computer program according to claim 40 embodied therein.

42. A wirelessly chargeable device, comprising:

a holder for generating an attractive force between the wirelessly chargeable device and a charging surface of a wireless-charging device, so as to prevent displacement of the wirelessly chargeable device when placed on the charging surface;

a processing unit being operative to;

(i) determine whether a user intends to remove the wirelessly chargeable device from the charging surface based on an input received from the user, and

(ii) as a result of determining that the user intends to remove the wirelessly chargeable device from the charging surface, release the wirelessly chargeable device from the charging surface; and

a camera facing in a direction opposite to the charging surface when the wirelessly chargeable device is placed on the charging surface, the processing unit being further operative to determine that the user intends to remove the wirelessly chargeable device by performing a process comprising;

retrieving one or more images captured by the camera; and

detecting, through image processing the one or more captured images, a release gesture performed by the user.

43. A wirelessly chargeable device, comprising:

a holder for generating an attractive force between the wirelessly chargeable device and a charging surface of a wireless-charging device, so as to prevent displacement of the wirelessly chargeable device when placed on the charging surface;

a processing unit being operative to;

(i) determine whether a user intends to remove the wirelessly chargeable device from the charging surface based on an input received from the user, and

(ii) as a result of determining that the user intends to remove the wirelessly chargeable device from the charging surface, release the wirelessly chargeable device from the charging surface; and

one or more protrusible members which are provided on a face of the wirelessly chargeable device facing the charging surface when placed on the charging surface, the processing unit being further operative to release the wirelessly chargeable device by controlling the one or more protrusible members to protrude.

44. A wirelessly chargeable device, comprising:

a holder for generating an attractive force between the wirelessly chargeable device and a charging surface of a wireless-charging device, so as to prevent displacement of the wirelessly chargeable device when placed on the charging surface; and

a processing unit being operative to;

(i) determine whether a user intends to remove the wirelessly chargeable device from the charging surface based on an input received from the user,

(ii) as a result of determining that the user intends to remove the wirelessly chargeable device from the charging surface, release the wirelessly chargeable device from the charging surface, and

(iii) authenticate the user in response to detecting that the user intends to remove the wirelessly chargeable device, wherein the wirelessly chargeable device is only released if the user is successfully authenticated.