Samsung Electronics Co., Ltd.

Yusu Kim

Juhyang Lee

Kyungmin Park

Chihyun Cho

Seho Park

Yongsang Yun

Byungyeol Choi

Wooram Lee

Kyoungwon Kim

Jungmin Lee

Youngmi Ha

Sungjoon Cho

Hansol Choi

Ju-Hyang Lee

Byunghwa Park

Hyunho Lee

Mincheol Ha

Dongzo Kim

Yong Sang Yun

Kyounghoon Kim

Byungwook Kim

Keumsu Song

Hyundeok Seo

Jung-Oh Sung

Seung-Nyun Kim

Dohyeon Kim

Kuchul Jung

Kwangseob Kim

Jeongmin Moon

Hyungjun Kwon

Jaesung Lee

Jung-Min Lee

Chi-Hyun Cho

Kisun Lee

Ku-Chul Jung

Hangseok Choi

Hyungkoo Chung

Jae-Woong Jeon

Minjung Park

Mingi Song

Kangjun Ko

Hanseok Park

Changjong Son

An electronic device is provided. The electronic device includes a wireless charging circuit and a processor operatively connected to the wireless charging circuit, wherein the processor is configured to wireless receive power wireless from an external device through the wireless charging circuit on the basis of a first wireless charging mode using a first frequency, detect a second frequency rather than the first frequency through the wireless charging circuit, and determine, in response to detecting the second frequency, whether to change the charging mode from the first wireless charging mode to a second wireless charging mode, based on at least one of a wireless charging efficiency or an output voltage of the electronic device.

Method for controlling wireless charging mode and device therefor

A wireless power receiver configured to receive wireless power from a wireless power transmitter comprises: a first coil configured to receive wireless power transmitted inductively; a second coil and a third coil configured to receive wireless power transmitted resonantly; a receiver integrated circuit (RXIC) comprising a full bridge structure, and including a first rectifier circuit including a first FET, a second FET, a third FET, and a fourth FET; and a second rectifier circuit, wherein an output terminal of the second rectifier circuit is connected to an output terminal of the first rectifier circuit, sources of the first FET and the second FET are connected to a ground, and, based on the first FET and the second FET being switched to an on-state and the third FET and the fourth FET being switched to an off-state, based on the wireless power transmitter inductively transmitting the wireless power, the wireless power receiver is configured to receive the wireless power through the first coil, and convert the received wireless power to DC power by body diodes of the third FET and the fourth FET to receive power for booting the RXIC, and, based on the wireless power transmitter resonantly transmitting the wireless power, the wireless power receiver is configured to receive the wireless power by inducing current in the third coil based on a magnetic field generated in the second coil, and rectify the received wireless power by the second rectifier circuit to receive power for booting the RXIC.

Wireless power receiver, and method performed by wireless power receiver

An electronic device may comprise: a battery; a charging circuit; a wireless power receiver circuit configured to acquire transmitted power wirelessly output from an external electronic device; and a processor. The processor may be configured to control the electronic device to: charge the battery through the charging circuit using received power acquired through the wireless power receiver circuit; identify at least one piece of information related to the charging, while the charging operation is performed; transmit a designated signal corresponding to suspension of the transmitted power to the external electronic device such that the external electronic device enters a wireless charging standby mode, in which the external electronic device holds the operation of outputting the transmitted power, at least partially based on the at least one piece of information; identify first situation information regarding the electronic device during the wireless charging standby mode; identify second situation information regarding the electronic device, in response to identifying the first situation information; and sense the electronic device being detached from the external electronic device based on the electronic device corresponding to the first situation information and the second situation information.

Wireless power charging method and electronic device using same

An electronic device to which a wireless charging system is applied is provided. The electronic device includes a battery, a charging circuit, and a circuit board configured to be electrically connected to the charging circuit and include a first portion and a second portion disposed adjacent to the first portion, wherein a first coil, a second coil, and a resonance coil are disposed in the first portion of the circuit board, the first coil being disposed outside the second coil, and the resonance coil being disposed inside the second coil, and wherein a third coil and a resonance capacitor are disposed in the second portion of the circuit board, the resonance capacitor being disposed inside the third coil, and the resonance coil and the resonance capacitor being electrically connected to each other to generate a designated resonance.

Electronic device to improve the efficiency of wireless charging

An electronic device may include a display, a power reception circuit, and a processor. The processor may perform wireless charging by receiving power wirelessly from an external electronic device through the power reception circuit, and receive data on one or more reasons to stop wireless charging from the external electronic device during the wireless charging. Also, the processor may transmit acknowledge (ACK) data to the external electronic device in response to receiving the data on the one or more reasons to stop wireless charging, and display, through the display, at least one reason to stop wireless charging included in the data on the one or more reasons to stop wireless charging. Other embodiments are possible.

Electronic device and method for transmission of reason wireless charging is stopping

Various embodiments of the disclosure relate to an electronic device and method that increases the efficiency of power supplying of a wireless charging circuit. The processor may perform a wireless power sharing function, may identify the type of an external device aligned with a coil of the electronic device, may supply a designated first power to a wireless charging integrated circuit of the electronic device in the case in which the external device is a first device, the first device being a device that requests a voltage higher than a reference voltage level, may control the wireless charging IC to generate a current of the coil based on the first power, may activate a path that directly connects a battery of the electronic device and the wireless charging IC, and may supply a second power lower than the first power to the wireless charging IC via the path.

Electronic device and method for increasing power supply efficiency of wireless charging circuit

Various embodiments of the present invention relate to wireless power transfer (WPT). An electronic device comprises a battery, a charging circuit for controlling a charging state of the battery, a coil, a wireless power transfer circuit electrically connected to the coil, and a control circuit, wherein the control circuit may be configured to: check a state related to charging of the battery; transfer a wireless charging parameter related to generation or modification of a power signal for transferring to an external electronic device via the coil, which is determined at least on the basis of the state related to charging of the battery; receive a response signal corresponding to the transfer of the wireless charging parameter from the external electronic device; generate, on the basis of the response signal, a power signal corresponding to the amount of wireless transmission power determined at least on the basis of the response signal by using the wireless power transfer circuit; and transfer the power signal to the external electronic device through the coil. In addition, various embodiments are possible.

Method for wireless power transfer and electronic device thereof

A wireless power transmission apparatus is provided. The wireless power transmission apparatus includes an upper housing, a lower housing coupled to the upper housing, a substrate disposed between the upper housing and the lower housing, a transmit coil disposed between the upper housing and the substrate and formed by being wound in the form of rotating on the substrate, at least one temperature sensor including a pattern resistor, a resistance numerical value which varies with temperature, and a flexible printed circuit board (FPCB) on which the at least one temperature sensor is disposed. The pattern resistor is disposed on the FPCB in a pattern of being wound in a first direction from any first point on the FPCB to any second point different from the any first point on the FPCB around a central portion of the FPCB and being rewound in a second direction opposite to the first direction.

Wireless power transmission apparatus

Electronic device and method for driving electronic device. The electronic device includes battery, power management integrated circuit (PMIC) configured to control charging status of battery, coil, wireless power circuit electrically connected to coil, communication circuit electrically connected to coil, and processor, wherein processor is configured to, when the wireless power circuit is in a transmission (Tx) mode, transmit a wireless power signal through the coil by using the wireless power circuit, and transmit a signal obtained by frequency shift keying (FSK)-modulating a transmission device parameter by using the communication circuit, to an external electronic device through the coil, and when the wireless power circuit is in a reception (Rx) mode, receive wireless power by using the wireless power circuit to charge the battery, and transmit a signal obtained by amplitude shift keying (ASK)-modulating a reception device parameter by using the communication circuit, to the external electronic device through the coil.

Electronic device and method for wired and wireless charging in electronic device

According to various embodiments, an electronic device comprises a battery, a wireless interface including a coil and configured to wirelessly transmit electric power from the battery via the coil, and at least one processor configured to: perform a wireless charging function of wirelessly transmitting electric power to an external device via the wireless interface, while neither the electronic device nor the external device is being supplied with electric power from an external power source via a wire, and based on identifying that the external device starts being supplied with electric power from an external power source via a wire while performing the wireless charging function, stop performing the wireless charging function of wirelessly transmitting electric power to the external device.

Electronic device and method for wire and wireless charging in electronic device

An electronic device includes a display, a conductive coil, a wireless charging circuit electrically connected to the conductive coil, a power management circuit, a battery; and a processor, wherein the processor may be configured to control the electronic device to: measure a current flowing from the power management circuit to the wireless charging circuit while power is transferred to an external device through the conductive coil, and adjust the power transferred to the external device through the conductive coil based on a part of a power amount preset in a signal requesting addition of power based on a value of the current being between a first threshold value and a second threshold value greater than the first threshold value.

Electronic device for wirelessly charging external device

A wireless power transmitter is provided. The wireless power transmitter includes an inverter configured to output alternating current (AC) power using direct current (DC) power, a coil configured to receive the AC power, and a control circuitry, wherein the control circuitry is configured to identify an input associated with transmitting the AC power, output the AC power at a specified frequency determined according to the input, using the inverter, transmit the AC power to an external electronic device using the coil, and, while at least partially transmitting the AC power to the external electronic device, transmit information associated with an amount of the DC power input to the inverter to output the AC power to the external electronic device, such that the external electronic device identifies transmission efficiency of the AC power using the information associated with the amount of DC power.

Apparatus for transmitting and receiving information about amount of power for identifying transmission efficiency associated with wireless power transfer and control method therefor

According to various embodiments, an electronic device may include: a battery; a charging circuit; a wireless power reception circuit configured to acquire transmission power wirelessly output from an external electronic device; and a processor, wherein the processor is configured to charge the battery through the charging circuit by using reception power acquired through the wireless power reception circuit, obtain status information related to the charging operation during the charging operation, and transmit a specified signal, corresponding to pausing of the transmission power, to the external electronic device such that the external electronic device pauses outputting of the transmission power, at least on the basis of the status information. In addition to the various embodiments according, other various embodiments are also possible.

Electronic device for receiving wireless power and method for wireless charging thereof

An electronic device including: a battery; a signal converting circuit connected to the battery including first, second, third, and fourth switches of a bridge structure; a processor connected to the signal converting circuit; and an antenna connected to the signal converting circuit. The signal converting circuit is configured to: receive from the processor an input which selects a first communication scheme based on the received input while converting and providing to the antenna a direct current signal output from the battery to an alternate current signal; control the first and fourth switches to alternate in a high state and a low state; control the second and third switches in a different state which is different from the state of the first and fourth switches; and control two of the first, second, third, and fourth switches in the high state to alternate in an on state and an off state.

Electronic device and method for performing wireless communication with external electronic device

According to embodiments, a wireless charging coil and an electronic device including the same are provided. The electronic device may include a battery; a wireless charging coil; a wireless charging circuit configured to wirelessly transmit and/or receive power using the wireless charging coil; and a processor electrically connected to the battery, the wireless charging coil, and the wireless charging circuit, wherein based on another electronic device being positioned within a specified transmission and/or reception distance of the electronic device, the processor is configured to control the electronic device to transmit power stored in the battery to the other electronic device using the wireless charging coil and the wireless charging circuit. Therefore, the electronic device can wirelessly charge another electronic device, a watch, and an earbud in which the remaining battery capacity is insufficient.

Growing community of inventors

Gyeonggi-do, South Korea

Yusu Kim