WIRELESS POWER RECEIVER AND CONTROLLING METHOD THEREOF

• US 20130221914A1
• Filed: 02/27/2013
• Published: 08/29/2013
• Est. Priority Date: 02/28/2012
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: KIM, Yu-Su, PARK, Se-Ho, BYUN, Kang-Ho, LEE, Kyung-Woo, YEO, Sung-Ku
• Granted Patent: US 9,685,811 B2
• Time in Patent Office: Days
• US Class Current: 320/108
• CPC Class Codes: H02J 50/12 of the resonant type
• 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 7/00036 Charger exchanging data with battery
• CPC Class Codes: H02J 7/00047 with provisions for charging different types of batteries
• 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

Disclosed is a method for controlling a wireless power receiver including a charging unit. The method includes receiving wireless power, rectifying the received wireless power and outputting Direct Current (DC) wireless power, and determining whether the voltage of the rectified wireless power is greater than or equal to the allowable voltage of the charging unit.

Claims

1. A method for controlling a wireless power receiver including a charging unit, the method comprising:

receiving wireless power;

rectifying the received wireless power and outputting Direct Current (DC) wireless power; and

determining whether a voltage of the rectified wireless power is equal to or higher than an allowable voltage of the charging unit.

2. The method for controlling a wireless power receiver according to claim 1, further comprising:

converting the voltage of the rectified wireless power to a predetermined voltage and outputting the converted wireless power to the charging unit, if the voltage of the rectified wireless power is greater than or equal to the allowable voltage of the charging unit.

3. The method for controlling a wireless power receiver according to claim 1, further comprising:

directly outputting the rectified wireless power to the charging unit, if the voltage of the rectified wireless power is lower than the allowable voltage of the charging unit.

4. The method for controlling a wireless power receiver according to claim 1, wherein the determining of whether the voltage of the rectified wireless power is greater than or equal to the allowable voltage of the charging unit, comprises:

reading information on the allowable voltage of the charging unit; and

determining whether the voltage of the rectified wireless power is equal to or higher than the allowable voltage of the charging unit based on the read information on the allowable voltage.

5. The method for controlling a wireless power receiver according to claim 1, wherein the determining of whether the voltage of the rectified wireless power is greater than or equal to the allowable voltage of the charging unit, comprises:

receiving information on the allowable voltage of the charging unit from the charging unit; and

determining whether the voltage of the rectified wireless power is higher than the allowable voltage of the charging unit based on the received information of the allowable voltage.

6. The method for controlling a wireless power receiver according to claim 1, further comprising:

receiving electric currents of square waves by the charging unit during a predetermined time.

7. The method for controlling a wireless power receiver according to claim 6, wherein the information on the allowable voltage is based on a number of the crests of the square waves received during the predetermined time.

8. The method for controlling a wireless power receiver according to claim 7, wherein the number of the crests of the square waves corresponds to a volt unit of the allowable voltage of the charging unit.

9. A wireless power receiver comprising:

an electric power-receiving unit that receives wireless power;

a rectifying unit that rectifies the received wireless power and outputs Direct Current (DC) wireless power;

a charging unit that stores wireless power; and

a control unit that determines whether a voltage of the rectified wireless power is equal to or higher than an allowable voltage of the charging unit.

10. The wireless power receiver according to claim 9, further comprising a converting unit that converts the voltage of the rectified wireless power to a predetermined voltage,

wherein the control unit performs control so that the converting unit converts the voltage of the rectified wireless power to a predetermined voltage and outputs the converted wireless power to the charging unit, if the voltage of the rectified wireless power is greater than the allowable voltage of the charging unit.

11. The wireless power receiver according to claim 9, further comprising a switching unit that is positioned between the rectifying unit and the charging unit,

wherein the control unit performs control so that the switching unit is in an on state so as to directly output the rectified wireless power to the charging unit, if the voltage of the rectified wireless power is less than or equal to the allowable voltage of the charging unit.

12. The wireless power receiver according to claim 9, further comprising a storage unit that stores information on the allowable voltage of the charging unit,

wherein the control unit reads the information on the allowable voltage and determines whether the voltage of the rectified wireless power is greater than or equal to the allowable voltage of the charging unit.

13. The wireless power receiver according to claim 9,

wherein the control unit receives the information on the allowable voltage of the charging unit from the charging unit, and determines whether the voltage of the rectified wireless power is higher than the allowable voltage of the charging unit based on the received information on the allowable voltage.

14. The wireless power receiver according to claim 9, wherein the charging unit receives electric currents of square waves during a predetermined time.

15. The wireless power receiver according to claim 14, wherein the information on the allowable voltage is based on a number of the square waves received during the predetermined time.

16. The wireless power receiver according to claim 15, wherein the number of the square wave corresponds to a volt unit of the allowable voltage of the charging unit.

17. A wireless power receiver comprising:

an electric power-receiving unit that received a wireless power;

a rectifying unit that rectifies the receives wireless power and outputs Direct Current (DC) wireless power;

a charging unit that stores wireless power;

a control unit that determines whether a voltage of the rectified wireless power is greater than or equal to an allowable voltage of the charging unit; and

a converting unit that includes a first route for converting the voltage of the rectified wireless power to a predetermined voltage and a second route for directly outputting the rectified wireless power to the charging unit.

18. The wireless power receiver according to claim 17, wherein the control unit performs control so that the converting unit uses the first route for converting the voltage of the rectified wireless power to a predetermined voltage and outputting the converted wireless power to the charging unit, if the voltage of the rectified wireless power is greater than or equal to the allowable voltage of the charging unit.

19. The wireless power receiver according to claim 17, wherein the control unit performs control so that the converting unit uses the second route for directly outputting the rectified wireless power to the charging unit, if the voltage of the rectified wireless power is less than the allowable voltage of the charging unit.