Samsung Electronics Co., Ltd.

Dongzo Kim

Mincheol Ha

Kihyun Kim

Yunjeong Noh

Hyungkoo Chung

Jihye Kim

Kyungmin Lee

Kwangseob Kim

Taehyeon Yu

Yongsang Yun

Keumsu Song

Changhak O

Keyic Son

Jongchul Hong

Jiwon Kim

Seho Park

Yusu Kim

Wooram Lee

Yong Sang Yun

Ju-Hyang Lee

Seung-Nyun Kim

Youngmi Ha

Jung-Oh Sung

Chi-Hyun Cho

Ji-Won Kim

Byungwook Kim

Jae-Wan Park

Woojin Jung

Sungjoon Cho

Hansol Choi

Sangmoo Hwangbo

Jae-Woong Jeon

Jaewan Park

Jungsu Park

Jaeho Song

Chang-Hak O

Kangjun Ko

Hanseok Park

Dongik Sin

Minji Chae

Changjong Son

An electronic device includes a plurality of coils, power conversion circuits, demodulation switches, and a processor. The power conversion circuits convert DC power into AC power, and output the AC power to the plurality of coils, respectively. The demodulation switches selectively connect the plurality of coils to ground. The processor selects at least one coil from among the plurality of coils, and controls an on/off state of the demodulation switches to connect or disconnect at least one remaining coil except for the selected at least one coil among the plurality of coils to the ground. The processor controls the power conversion circuits to output the AC power to the selected at least one coil and demodulates a signal of the selected at least one coil to identify information from an external electronic device disposed adjacent to a selected at least one coil based on the demodulation.

Electronic device for wirelessly transmitting power and operation method thereof

An electronic device is provided. The electronic device includes a wireless transmission circuit for transmitting power to a power reception device, and a first processor. When entering a power reduction mode, with respect to a first voltage and a first current being output from the wireless transmission circuit, the first processor includes, in case that the power reception device is in an align state, lower a voltage of the wireless transmission circuit to a second voltage lower than the first voltage and lower a current flowing in the electronic device to a second current lower than the first current, and, in case that the power reception device is in a misalign state, lower a voltage of the electronic device to a third voltage lower than the second voltage and lower a current flowing in the wireless communication circuit to a third current lower than the second current.

Electronic device and method for controlling heat in electronic device

An example wireless power transmitter may include a transmission coil, a converter configured to output a driving voltage, an inverter configured to output AC power to the transmission coil using the driving voltage, and a controller. The controller may be configured to identify a first voltage at one point within the wireless power transmitter while power is wirelessly transmitted through the transmission coil. The controller may be configured to perform at least one operation for providing a first packet for reduction in modulation depth of a wireless power receiver to the wireless power receiver based on a peak-to-peak value identified to be larger than a first reference value according to the first voltage.

Wireless power transmitting device, wireless power receiving device, and method of operating the same

According to various embodiments, there may be provided an electronic device comprising a coil, an inverter configured to provide power to the coil, a power providing circuit, a communication circuit, and a control circuit, wherein the control circuit is configured to control the power providing circuit to apply a first voltage to an input terminal of the inverter, the inverter outputting a first magnitude of power based on the application of the first voltage, control the power providing circuit to apply a second voltage lower than the first voltage to the input terminal of the inverter, based on the application of the first voltage being maintained for a specific time, identify, through the communication circuit, a first control error packet from the wireless power receiving device, while applying the second voltage, and identify a first value included in the first control error packet.

Electronic device wirelessly transmitting power, wireless power reception device wirelessly receiving power, and method for operating the same

A wireless power transmission apparatus is provided. The wireless power transmission apparatus includes a first coil including a first conductive wire area formed of an arrangement of conductive wires, and a first opening area surrounded by the first conductive wire area, a second coil including a second conductive wire area formed of an arrangement of conductive wires, and a second opening area surrounded by the second conductive wire area, a first overlapping area formed by overlapping a portion of the first conductive wire area with a portion of the second opening area, and a first shielding member disposed on at least a portion of the first overlapping area, wherein the first shielding member may be configured to at least partially block an electromagnetic field generated by the second coil interfering in the first conductive wire area.

Wireless power transmission apparatus comprising shielding member

An electronic device includes: coils; power conversion circuits configured to receive direct current (DC) power, convert the DC power into alternating current (AC) power, and output the AC power to the coils; and a processor. The processor is configured to: apply to the coils a ping signal of which a ping power section is repeated periodically and which has a plurality of ping power levels increasing in phases; confirm an SSP signal responding to the ping signal; and perform wireless power transmission by the coils on the basis of a ping power level in which the SSP signal is confirmed from among the plurality of ping power levels.

Electronic device and method for confirming power reception device by electronic device

Disclosed is a method for controlling an electronic device electrically couplable to an external electronic device through a connector and capable of transmitting/receiving wireless power, the method including: an operation of identifying electrical connection to the external electronic device; an operation of receiving power from the external electronic device through a short-range communication module; an operation of controlling a mode switch module based on the received power and transmitting a signal regarding a power transmission mode to the external electronic device through the connector; an operation of receiving direct-current power from the external electronic device through the connector after transmitting the signal regarding the power transmission mode; and an operation of generating an electromagnetic field for wireless power transmission through the wireless power transmission/reception module, based on the received direct-current power.

Electronic device and method for controlling operation of electronic device

An electronic device according to various embodiments include a sensor, a first magnetic element which can be rotated to have a polarity of a first pole or a second pole in a first direction, and a processor. When the first magnetic element is aligned in the first direction by a magnetic force generated due to the approach of a second magnetic element included in an external electronic device, the processor is configured to identify the strength of the magnetic force and the polarity of the first magnetic element corresponding to the magnetic force by means of the sensor, select any one of a plurality of power transmission methods on the basis of the strength of the magnetic force and the polarity, and transmit power to the external electronic device wirelessly on the basis of the power transmission method.

Electronic device for wireless power transmission and operating method thereof

Various embodiments relating to an electronic device are disclosed, and according to an embodiment, the electronic device may comprise: a plurality of coils; a first power generation circuit electrically connected to at least one of the plurality of coils; a second power generation circuit electrically connected to at least one of the plurality of coils; and a control circuit, wherein when the approach of a second external electronic device is detected while first power is provided to a first external electronic device by using a first frequency via the first power generation circuit, the control circuit allows the frequency of the second power generation circuit to be configured to a second frequency different from a first frequency in order to provide second power to the second external electronic device. Other embodiments may be possible.

Electronic device and multi-wireless transmission power control method based on states of plurality of external electronic devices

A power transmission device is provided for transmitting power. The power transmission device includes a power transmitter including a plurality of coils, and a processor configured to wirelessly transmit power to a power reception device through at least one coil among the plurality of coils, identify a condition indicating a state in which a coil to transmit power related to charging of the power reception device is to be reconfigured, transmit a CSP to the power reception device, in response to identifying the condition, based on the predetermined condition, identify an SSP of at least one other coil adjacent to at least one coil, and wirelessly transmit power to the power reception device through a coil having a largest SSP among an SSP of the at least one coil and the identified SSP of the at least one other coil.

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

One or more disclosed embodiments relate to a wireless charging transmitter and a wireless power transfer method. The wireless charging transmitter includes a first charging pad including a first wireless power circuit, a second charging pad including a second wireless power circuit, and a controller configured to, in response to detection of a first electronic device being placed on the first charging pad, transfer power at a first designated wireless power level via the first wireless power circuit, in response to detection of a second electronic device being placed on the second charging pad, transmit a first command for decreasing power transferred to the first electronic device, and transfer, upon receipt of a first request for power at a second designated wireless power level from the first electronic device in response to the first command, the power at the second designated wireless power level via the first and second wireless power circuits. The disclosure may further include other various embodiments.

Wireless charging transmitter and wireless power transfer method

An electronic device according to an embodiment may include: a wireless charging coil; a power transmission circuit configured to be electrically connected to the wireless charging coil; a wireless communication circuit configured to communicate with an external electronic device; and a control circuit. The control circuit may be configured to: transmit power to an external electronic device; obtain data corresponding to power received by the external electronic device in response to the transmitted power using the wireless communication circuit; obtain power loss based on the obtained data; stop transmitting the power to the external electronic device when the power loss exceeds a first threshold; and stop transmitting the power to the external electronic device according to whether an event related the power loss occurs even when the power loss is lower than the first threshold.

Method for controlling wireless transmission power and electronic device including same

According to certain embodiments, a power transmission device comprises an induction circuit configured to transmit a wireless power signal through a charging pad and receive a signal from an external device; and at least one processor operatively connected to the induction circuit, wherein the processor is configured to: enter a wireless charging protection mode for wireless charging of the external device, measure a current value of the wireless power signal, and release the wireless charging protection mode when the packet information is not included in the signal transmitted from the external device and the measured current value or variation of the current value exceeds a threshold value.

Power transmission device and method for detecting metal substance

An electronic device includes a coil, and at least one control circuit electrically connected to the coil. The control circuit is configured to transmit power to an external device via the coil by using a first frequency belonging to a first frequency band, receive a packet related with wireless charging from the external device via the coil, in response to having failed to receive the packet within a first reference time, change at least one of an amplitude of the power transmitted or the first frequency used for the transmitting of the power, and to transmit power to the external device via the coil on the basis of the at least one of the changed transmit power or the changed frequency.

Method and device for stabilizing communication performance during wireless power transmission

An electronic device is includes battery; coil; wireless charging circuit electrically connected to coil; power management module configured to control charge state of battery by using power supplied from receiving circuit; and processor operatively connected to wireless charging circuit and power management module, wherein processor is configured to request configuration information for performing wireless charging from external device through the wireless charging circuit; determine whether wireless charging is possible, based on a response to the request for configuration information; when the wireless charging is possible, request encrypted authentication information from the external device so as to perform authentication with respect to the external device; when the external device is an unauthenticated device, request the external device to transmit a first predetermined power; and when the external device is an authenticated device, request the external device to transmit a second predetermined power that is higher than the first predetermined power.

Growing community of inventors

Gyeonggi-do, South Korea

Dongzo Kim