US-12627178-B2 - Electronic device and method of controlling wireless charging using the same

US12627178B2US 12627178 B2US12627178 B2US 12627178B2US-12627178-B2

Abstract

An electronic device is provided. The electronic device includes a power receiver including a power receiving coil, a battery, and at least one processor operatively connected to the power receiver and the battery, wherein the at least one processor may be configured to identify whether a wireless charging protection mode has been entered, to wirelessly receive power in a first range from the power transmitting device through the power receiver when it is identified that a wireless charging protection mode has not been entered, to charge the battery using power in the first range, to identify a charge amount of the battery charged for a designated time, and to identify that a metallic foreign object exists, and to change the heat generation control condition in case it is identified that the charge amount of the battery is less than a designated value.

Inventors

Jisu Ryu
Sengtai LEE

Assignees

SAMSUNG ELECTRONICS CO., LTD.

Dates

Publication Date: 20260512
Application Date: 20220825
Priority Date: 20210830

Claims (16)

1 . An electronic device comprising: a power receiver including a power receiving coil; a battery; and at least one processor operatively connected to the power receiver and the battery, wherein the at least one processor is configured to: wirelessly receive power in a first range from a power transmitting device through the power receiver, charge the battery using power in the first range and identify a charge amount of the battery charged for a designated time, identify presence of a metallic foreign object based on the identified charge amount of the battery being less than a designated value, and change a heat generation control condition based on the identification of the presence of the metallic foreign object, wherein the heat generation control condition comprises a case where a temperature of the power receiving coil is configured to a first temperature, and wherein the at least one processor is configured to: change the heat generation control condition from the first temperature to a second temperature lower than the first temperature, based on the identified charge amount of the battery being less than the designated value.
2 . The electronic device of claim 1 , further comprising a temperature sensor disposed adjacent to the power receiving coil, wherein the at least one processor is further configured to: transmit a signal requesting power in a second range lower than power in the first range to the power transmitting device based on the temperature of the power receiving coil measured through the temperature sensor exceeding the second temperature, and charge the battery using power in the second range wirelessly received from the power transmitting device through the power receiver.
3 . The electronic device of claim 2 , wherein the at least one processor is further configured to: transmit the signal requesting power in the first range higher than power in the second range to the power transmitting device, in case that the temperature of the power receiving coil measured through the temperature sensor reaches a third temperature lower than the second temperature while charging the battery using power in the second range, and charge the battery using power in the first range wirelessly received from the power transmitting device through the power receiver.
4 . The electronic device of claim 1 , wherein the at least one processor is further configured to receive a signal for enabling entry into a wireless charging protection mode determined by the power transmitting device from the power transmitting device based on an output amount of power transmitted by the power transmitting device and a reception amount of power received from the power transmitting device.
5 . The electronic device of claim 4 , wherein the at least one processor is further configured to: receive the signal for enabling entry into the wireless charging protection mode from the power transmitting device based on a ratio of the power reception amount to the power output amount being identified to be less than a designated ratio value by the power transmitting device, and block charging of the battery by entry into the wireless charging protection mode, and wherein the metallic foreign object is present in an upper part of the power transmitting device, when the ratio of the power reception amount to the power output amount is less than the designated ratio value.
6 . The electronic device of claim 4 , wherein the at least one processor is further configured to wirelessly receive power in the first range from the power transmitting device through the power receiver when the signal for enabling entry into the wireless charging protection mode is not received from the power transmitting device.
7 . The electronic device of claim 6 , wherein a case of not receiving the signal for enabling entry into the wireless charging protection mode from the power transmitting device comprises a case of not receiving the signal for enabling entry into the wireless charging protection mode from the power transmitting device based on the ratio of the power reception amount to the power output amount being identified as being greater than or equal to the designated ratio value by the power transmitting device, and wherein the metallic foreign object is not present in an upper part of the power transmitting device, in case that the ratio of the power reception amount to the power output amount is equal to or greater than the designated ratio value.
8 . The electronic device of claim 6 , wherein a case of not receiving the signal for enabling entry into the wireless charging protection mode from the power transmitting device comprises a case of not receiving the signal for enabling entry into the wireless charging protection mode from the power transmitting device, as the presence of the metallic foreign object is not identified, but the metallic foreign object is present in an upper part of the power transmitting device based on the ratio of the power reception amount to the power output amount being identified as being less than the designated ratio value by the power transmitting device.
9 . A method of controlling wireless charging of an electronic device, the method comprising: receiving wirelessly power in a first range from a power transmitting device through a power receiver of the electronic device; charging a battery using power in the first range and identifying a charge amount of the battery charged for a designated time; identifying presence of a metallic foreign object based on the identified charge amount of the battery being less than a designated value, and changing a heat generation control condition based on the identification of the presence of the metallic foreign object, wherein the heat generation control condition comprises a case where a temperature of a power receiving coil included in the power receiver is configured to a first temperature, and wherein changing the heat generation control condition comprises: changing the heat generation control condition from the first temperature to a second temperature lower than the first temperature, based on the identified charge amount of the battery being less than the designated value.
10 . The method of claim 9 , further comprising: measuring a temperature of the power receiving coil using a temperature sensor of the electronic device; transmitting a signal requesting power in a second range lower than power in the first range to the power transmitting device in case that the measured temperature of the power receiving coil exceeds the second temperature; and charging the battery using power in the second range wirelessly received from the power transmitting device through the power receiver.
11 . The method of claim 10 , further comprising: transmitting the signal requesting power in the first range higher than power in the second range to the power transmitting device, in case that the temperature of the power receiving coil measured through the temperature sensor reaches a third temperature lower than the second temperature while charging the battery using power in the second range; and charging the battery using power in the first range wirelessly received from the power transmitting device through the power receiver.
12 . The method of claim 9 , further comprising: receiving a signal for enabling entry into the wireless charging protection mode determined by the power transmitting device from the power transmitting device based on an output amount of power transmitted by the power transmitting device and a reception amount of power received from the power transmitting device.
13 . The method of claim 12 , further comprising: receiving the signal for enabling entry into the wireless charging protection mode from the power transmitting device based on a ratio of the power reception amount to the power output amount is being identified as being less than a designated ratio value by the power transmitting device; and entering the wireless charging protection mode to block charging of the battery, wherein the metallic foreign object is present in an upper part of the power transmitting device, when the ratio of the power reception amount to the power output amount is less than the designated ratio value.
14 . The method of claim 12 , wherein the receiving of wirelessly power in the first range comprises wirelessly receiving power in the first range from the power transmitting device through the power receiver in case that the signal for enabling entry into the wireless charging protection mode is not received from the power transmitting device.
15 . The method of claim 14 , wherein a case of not receiving the signal for enabling entry into the wireless charging protection mode from the power transmitting device comprises a case of not receiving the signal to enter the wireless charging protection mode from the power transmitting device based on the ratio of the power reception amount to the power output amount being identified as being greater than or equal to the designated ratio value by the power transmitting device, and wherein the metallic foreign object is not present in an upper part of the power transmitting device, in case that the ratio of the power reception amount to the power output amount is greater than or equal to the designated ratio value.
16 . The method of claim 14 , wherein a case of not receiving the signal for enabling entry into the wireless charging protection mode from the power transmitting device comprises a case of not receiving the signal for enabling entry into the wireless charging protection mode from the power transmitting device, as the presence of the metallic foreign object is not identified, but the metallic foreign object is present in an upper part of the power transmitting device based on the ratio of the power reception amount to the power output amount being identified as being less than the designated ratio value by the power transmitting device.

Description

CROSS-REFERENCE TO RELATED APPLICATION(S) This application is a continuation application, claiming priority under § 365(c), of an International application No. PCT/KR2022/012518, filed on Aug. 22, 2022, which is based on and claims the benefit of a Korean patent application number 10-2021-0114871, filed on Aug. 30, 2021, in the Korean Intellectual Property Office, the disclosure of which is incorporated by reference herein in its entirety. TECHNICAL FIELD The disclosure relates to an electronic device and a method of controlling wireless charging using the same. More particularly, the disclosure relates to an electronic device for identifying whether a metallic foreign object exists based on a charge amount of a charged battery using power wirelessly received from a power transmitting device for a designated time in a state in which a wireless charging protection mode does not operate. BACKGROUND ART Electronic devices may perform wireless charging or contactless charging using wireless power transfer technology. Wireless power transfer technology may be technology that charges a battery of the electronic device by wirelessly transferred power from a power transmitting device to an electronic device without connection by a separate connector between the electronic device (e.g., a power receiving device) and the power transmitting device (e.g., a wireless charger). In using wireless power transfer technology, the power transmitting device may function in a wireless charging protection mode for detection of a metallic foreign object. The wireless charging protection mode may be a mode of detecting a presence or absence of a metallic foreign object during wireless charging of the electronic device and preventing heat generation due to the metallic foreign object. The above information is presented as background information only to assist with an understanding of the disclosure. No determination has been made, and no assertion is made, as to whether any of the above might be applicable as prior art with regard to the disclosure. DISCLOSURE OF INVENTION Technical Problem However, when a wireless charging protection mode does not operate due to a presence of a metallic foreign object during wireless charging, the battery may be charged with normal charging power, and accordingly, thermal deformation may occur in a rear cover of the electronic device and/or an upper part of the power transmitting device. An electronic device according to various embodiments of the disclosure may identify whether a metallic foreign object exists based on a charge amount of a charged battery using power wirelessly received from a power transmitting device for a designated time in a state in which a wireless charging protection mode does not operate. When a charge amount of the battery is less than a designated value, the electronic device may identify that a metallic foreign object exists and change a heat generation control condition. Aspects of the disclosure are to address at least the above-mentioned problems and/or disadvantages and to provide at least the advantages described below. Accordingly, an aspect of the disclosure is to provide an electronic device and a method of controlling wireless charging using the same. Additional aspects will be set forth in part in the description which follows and, in part, will be apparent from the description, or may be learned by practice of the presented embodiments. Solution to Problem In accordance with an aspect of the disclosure, an electronic device is provided. The electronic device includes a power receiver including a power receiving coil, a battery, and at least one processor operatively connected to the power receiver and the battery, wherein the at least one processor may be configured to identify whether a wireless charging protection mode has been entered, to wirelessly receive power in a first range from a power transmitting device through the power receiver when it is identified that a wireless charging protection mode has not been entered, to charge the battery using power in the first range, to identify a charge amount of the battery charged for a designated time, and to identify that a metallic foreign object exists and to change the heat generation control condition when it is identified that the charge amount of the battery is less than a designated value. In accordance with another aspect of the disclosure, a method of controlling wireless charging of an electronic device is provided. The method includes identifying whether a wireless charging protection mode has been entered, receiving, when it is identified that a wireless charging protection mode has not been entered, wirelessly receiving power in a first range from a power transmitting device through a power receiver of the electronic device, charging the battery using power in the first range, identifying a charge amount of the battery charged for a designated time, and identifying that a metallic foreign object