ELECTRONIC DEVICE FOR RECEIVING POWER WIRELESSLY AND METHOD FOR CONTROLLING THE ELECTRONIC DEVICE

• US 20180166922A1
• Filed: 12/12/2017
• Published: 06/14/2018
• Est. Priority Date: 12/12/2016
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd. (Samsung Group)
• Original Assignee: Samsung Electronics Co. Ltd. (Samsung Group)
• Inventors: CHUNG, Myung-Kyoon
• Granted Patent: US 10,622,840 B2
• Time in Patent Office: Days
• 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
• CPC Class Codes: H04M 1/72454 according to context-related or environment-related conditions

Abstract

An electronic device and method thereof for receiving power wirelessly are provided. The electronic device includes a sensor for detecting movement of the electronic device, a coil for receiving power wirelessly, a rectifier for rectifying the power received from the coil, a converter for converting a voltage of the rectified power to an output voltage, a power management integrated circuit (PMIC) for charging a battery of the electronic device or supplying consumption power to at least one hardware component of the electronic device, using the converted power, and a processor for controlling a parameter for at least one of the rectifier or the PMIC, based on the movement of the electronic device.

Claims

1. An electronic device, comprising:

a sensor configured to detect movement of the electronic device;

a coil configured to receive power wirelessly;

a rectifier configured to rectify the power received from the coil;

a converter configured to convert a voltage of the rectified power to an output voltage;

a power management integrated circuit (PMIC) configured to charge a battery of the electronic device or supply power to at least one hardware component of the electronic device, using the converted power; and

a processor configured to control a parameter for at least one of the rectifier and the PMIC, based on the movement of the electronic device.

2. The electronic device of claim 1, wherein the processor is further configured to set a voltage setting value for an output of the rectifier to a first voltage value, if the movement of the electronic device is less than a predetermined threshold;

and

wherein the processor is further configured to set the voltage setting value for the output of the rectifier to a second voltage value, if the movement of the electronic device is equal to or larger than the predetermined threshold.

3. The electronic device of claim 2, wherein a first difference between the first voltage value and the output voltage of the converter is smaller than a second difference between the second voltage value and the output voltage of the converter.

4. The electronic device of claim 2, wherein the processor is further configured to monitor the movement of the electronic device during reception of the power with the voltage setting value for the output of the rectifier set to the second voltage value based on the determination that the movement of the electronic device is equal to or larger than the predetermined threshold;

and

wherein the processor is further configured to change the voltage setting value for the output of the rectifier from the second voltage value to the first voltage value, if the processor detects that the movement of the electronic device has decreased below the predetermined threshold.

5. The electronic device of claim 1, wherein the processor is further configured to set the voltage setting value for the output of the rectifier to a second voltage value which is larger than a first voltage value, upon detection of initiation of wireless reception of the power;

and

wherein the processor is further configured to change a voltage setting value for an output of the rectifier from the second voltage value to the first voltage value, if the processor detects that the movement of the electronic device has decreased below a predetermined threshold.

6. The electronic device of claim 5, wherein the processor is further configured to set the voltage setting value for the output of the rectifier to the second voltage value, which is larger than the first voltage value, during a first time period, upon detection of the initiation of wireless reception of the power;

and

wherein the processor is further configured to detect the movement of the electronic device again, if the first time period elapses.

7. The electronic device of claim 1, wherein the processor is further configured to decrease an input current setting value for the PMIC from a first current value to a second current value, which is smaller than the first current value, if the processor determines that a voltage at an input of the PMIC is lower than a predetermined voltage threshold;

and

wherein the processor is further configured change the input current setting value for the PMIC from the second current value to the first current value, if with the input current setting value for the PMIC set to the second current value and the processor determines that the movement of the electronic device is less than a predetermined threshold.

8. The electronic device of claim 1, wherein the processor is further configured to set an input current setting value for the PMIC to a first current value;

and

wherein the processor is further configured to maintain the input current setting value for the PMIC to be the first current value, if the processor determines that a voltage at an input of the PMIC is lower than a predetermined voltage threshold and the movement of the electronic device is equal to or larger than a predetermined threshold.

9. The electronic device of claim 1, wherein the processor is further configured to continue the reception of the power, if the processor determines that a voltage at an input of the PMIC is lower than a predetermined voltage threshold and the movement of the electronic device is equal to or larger than a predetermined threshold.

10. The electronic device of claim 1, further comprising a communication interface configured to communicate with a wireless power transmitter transmitting the power wirelessly,

wherein the processor is further configured to control the communication interface to discontinue the communication with the wireless power transmitter, if the processor determines that a voltage at an input of the PMIC is lower than a predetermined voltage threshold and the movement of the electronic device is equal to or larger than a predetermined threshold.

11. The electronic device of claim 10, wherein the processor is further configured to control the communication interface to transmit a signal including information indicating communication discontinuation to the wireless power transmitter, before the communication interface discontinues the communication with the wireless power transmitter.

12. The electronic device of claim 10, wherein the processor is further configured to control the communication interface to resume the communication with the wireless power transmitter, if the processor determines that the movement of the electronic device has decreased below the predetermined threshold.

13. A method for controlling an electronic device, the method comprising:

detecting movement of the electronic device;

receiving power wirelessly;

rectifying the power by a rectifier;

converting a voltage of the rectified power to an output voltage;

charging, by a power management integrated circuit (PMIC), a battery of the electronic device or supplying power to at least one hardware component of the electronic device, using the converted power; and

controlling a parameter for at least one of the rectifier and the PMIC, based on the movement of the electronic device.

14. The method of claim 13, wherein controlling the parameter for the at least one of the rectifier and the PMIC, based on the movement of the electronic device comprises:

in response to the movement of the electronic device being less than a predetermined threshold, setting a voltage setting value for an output of the rectifier to a first voltage value; and

in response to the movement of the electronic device being equal to or larger than the predetermined threshold, setting the voltage setting value for the output of the rectifier to a second voltage value.

15. The method of claim 14, wherein a first difference between the first voltage value and the predetermined output voltage is smaller than a second difference between the second voltage value and the predetermined output voltage.

16. The method of claim 14, wherein controlling the parameter for the at least one of the rectifier and the PMIC, based on the movement of the electronic device comprises:

monitoring movement of the electronic device, during reception of the power with the voltage setting value for the output of the rectifier set to the second voltage value based on the determination that the movement of the electronic device is equal to or larger than the predetermined threshold; and

in response to the movement of the electronic device being decreased below the predetermined threshold, changing the voltage setting value for the output of the rectifier from the second voltage value to the first voltage value.

17. The method of claim 13, wherein controlling the parameter for the at least one of the rectifier and the PMIC, based on the movement of the electronic device comprises:

in response to a voltage at an input of the PMIC being lower than a predetermined voltage threshold, decreasing an input current setting value for the PMIC from a first current value to a second current value which is smaller than the first current value; and

in response to the movement of the electronic device being less than a predetermined threshold while the input current setting value for the PMIC set to the second current value, changing the input current setting value for the PMIC from the second current value to the first current value.

18. The method of claim 13, wherein controlling the parameter for the at least one of the rectifier and the PMIC, based on the movement of the electronic device comprises:

setting an input current setting value for the PMIC to a first current value; and

in response to a voltage at an input of the PMIC being lower than a predetermined voltage threshold and the movement of the electronic device is equal to or larger than a predetermined threshold, maintaining the input current setting value for the PMIC to be the first current value.

19. The method of claim 13, wherein controlling the parameter for the at least one of the rectifier and the PMIC, based on the movement of the electronic device comprises:

in response to a voltage at an input of the PMIC being lower than a predetermined voltage threshold and the movement of the electronic device is equal to or larger than a predetermined threshold, continuing the reception of the power.

20. The method of claim 13, further comprising communicating with a wireless power transmitter transmitting the power wirelessly,

wherein controlling the parameter for the at least one of the rectifier and the PMIC, based on the movement of the electronic device includes, in response to a voltage at an input of the PMIC being lower than a predetermined voltage threshold and the movement of the electronic device is equal to or larger than a predetermined threshold, discontinuing the communication with the wireless power transmitter.