Granted Patent B2

US 12,726,052 · App. 17/758,861 · Granted Sep 1, 2026

Inventors: Jingu Choi (Seoul, KR); Jaehyu Kim (Seoul, KR); Minsoo Lee (Seoul, KR); Jinkwon Lim (Seoul, KR); Yongcheol Park (Seoul, KR)

Assignee: LG ELECTRONICS INC.

H02J50/80H02J7/933H02J50/12

Abstract

Claims (15)

1 . A wireless power receiver, which receives a wireless power from a wireless power transmitter and is capable of receiving an additional power from an additional power source in addition to the wireless power, configured to:

during receiving the wireless power from the wireless power transmitter according to a power transfer contract established with the wireless power transmitter, enter a suspend state for receiving the wireless power transmitted according to the power transfer contract during a predetermined time based on a change in the additional power,

wherein, after entering the suspend state, the wireless power receiver transmits, to the wireless power transmitter, update information for updating the power transfer contract during the predetermined time, and

wherein, in a case of transmitting the update information to the wireless power transmitter through out-band communication using a frequency other than an operating frequency, the predetermined time is set shorter compared to a case of transmitting the update information to the wireless power transmitter through in-band communication using the operating frequency for receiving the wireless power.

2 . The wireless power receiver of claim 1 , wherein, after entering the suspend state, the wireless power receiver transmits, to the wireless power transmitter, a message notifying a change in the additional power or a change in a load state due to a change in the additional power.

3 . The wireless power receiver of claim 1 , wherein the change in the additional power is that a reception of the additional power is stopped during receiving the wireless power or the additional power is received while the wireless power is received.

4 . The wireless power receiver of claim 3 , wherein the additional power is a power supplied through at least one of a power cable and a battery.

5 . A method for receiving a wireless power from a wireless power transmitter, the method performed by a wireless power receiver which is capable of receiving an additional power from an additional power source in addition to the wireless power and comprising:

receiving, from the wireless power transmitter, the wireless power according to a power transfer contract established with the wireless power transmitter; and

entering a suspend state for receiving the wireless power transmitted according to the power transfer contract during a predetermined time based on a change in the additional power,

wherein, after entering the suspend state, the wireless power receiver transmits, to the wireless power transmitter, update information for updating the power transfer contract during the predetermined time, and

wherein, in a case of transmitting the update information to the wireless power transmitter through out-band communication using a frequency other than an operating frequency, the predetermined time is set shorter compared to a case of transmitting the update information to the wireless power transmitter through in-band communication using the operating frequency for receiving the wireless power.

6 . The method of claim 5 , wherein, after entering the suspend state, the wireless power receiver transmits, to the wireless power transmitter, a message notifying a change in the additional power or a change in a load state due to a change in the additional power.

7 . The method of claim 5 , wherein the change in the additional power is that a reception of the additional power is stopped during receiving the wireless power or the additional power is received while the wireless power is received.

8 . The method of claim 7 , wherein the additional power is a power supplied through at least one of a power cable and a battery.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (16)