公开(公告)号：US20230047559A1

公开(公告)日：2023-02-16

申请号：US17830840

申请日：2022-06-02

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yusu KIM ,  Seho PARK ,  Hyungkoo CHUNG ,  Dohyeon KIM ,  Byunghwa PARK ,  Wooram LEE

IPC: H02J50/60 ,  H02J50/12 ,  H02J50/80 ,  H02J50/90 ,  H02J7/00

Abstract: According to an embodiment, a wireless power transmitting device may include a transmission coil, a power providing circuit, and at least one controller. The at least one controller may be configured to control the power providing circuit to apply first power to the transmission coil, identify a resonant frequency, based on a voltage measured at the transmission coil in response to the first power applied to the transmission coil, based on a difference between the identified resonant frequency and a reference frequency meeting a designated condition, identify that a foreign object is placed on a charging area of the wireless power transmitting device, and based on the difference between the identified resonant frequency and the reference frequency failing to meet the designated condition, control the power providing circuit to apply, to the transmission coil, at least one second power for performing communication with a wireless power receiving device.

公开(公告)号：US20220190609A1

公开(公告)日：2022-06-16

申请号：US17688269

申请日：2022-03-07

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kihyun KIM ,  Kyungha KOO ,  Wooram LEE ,  Changhyung LEE ,  Jihye KIM ,  Jihong KIM ,  Yunjeong NOH ,  Seho PARK ,  Kumjong SUN ,  Ju-Hyang LEE ,  Mincheol HA ,  Sangmoo HWANGBO

IPC: H02J7/00 ,  H02J50/80 ,  H02J50/00 ,  H02J50/10

Abstract: An electronic device is provided. The electronic device includes a housing, a wireless charging coil disposed inside the housing, a fan disposed inside the housing and in proximity to the coil, a temperature sensor disposed inside the housing and in proximity to the coil, a wireless charging circuit having the coil and configured to transmit power wirelessly to an external device via the coil, and a control circuit electrically connected to the fan, the temperature sensor, and the wireless charging circuit. The control circuit may be configured to receive a signal from the external device, receive data related to a temperature of the coil from the temperature sensor, and control the fan at least partially on the basis of at least one of the signal and the data.

公开(公告)号：US20210305848A1

公开(公告)日：2021-09-30

申请号：US17198370

申请日：2021-03-11

Applicant: Samsung Electronics Co., Ltd.

Inventor： Mingi SONG ,  Dohyeon KIM ,  Seho PARK ,  Wooram LEE

IPC: H02J50/40 ,  H02J50/80 ,  H02J50/12 ,  H02J50/60

Abstract: Provided are a wireless charging device and method. The wireless charging device may include: a first group of coils; a second group of coils; and a processor. The processor may be configured to: transmit a first ping signal through the first group of coils and the second group of coils; sense a change in current, voltage, and/or frequency occurring in the first group of coils and the second group of coils in response to the first ping signal to detect that an electronic device is placed on the wireless charging device; select at least one coil from the first group of coils and at least one coil from the second group of coils at which the change is sensed; transmit a second ping signal through the selected coils; and wirelessly transmit power to the electronic device by using the selected coils. Various other embodiments are also disclosed.

公开(公告)号：US20210273491A1

公开(公告)日：2021-09-02

申请号：US17178707

申请日：2021-02-18

Applicant: Samsung Electronics Co., Ltd.

Inventor： Wooram LEE ,  Dohyeon KIM ,  Seho PARK ,  Mingi SONG

IPC: H02J50/40 ,  H02J50/12 ,  H02J50/80

Abstract: A wireless charging device is provided and includes a first inverter, a first switch electrically connected to the first inverter, a second inverter, a second switch electrically connected to the second inverter, a first coil group connected to the first inverter through the first switch, a second coil group connected to the second inverter through the second switch, and a processor operatively connected to the first inverter, the first switch, the second inverter, the second switch, the first coil group, and the second coil group. The processor detects an electronic device disposed above the wireless charging device through at least one coil in the first coil group or the second coil group, and to wirelessly transmit power to the electronic device by using one coil in the first coil group and one coil in the second coil group.

公开(公告)号：US20200266675A1

公开(公告)日：2020-08-20

申请号：US16782535

申请日：2020-02-05

Applicant: Samsung Electronics Co., Ltd.

Inventor： Wooram LEE ,  Kangjun KO ,  Kwangseob KIM ,  Minji CHAE ,  Youngmi HA ,  Dongzo KIM ,  Mincheol HA

IPC: H02J50/80 ,  H02J7/00 ,  H02J50/10

Abstract: 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.

公开(公告)号：US20200091780A1

公开(公告)日：2020-03-19

申请号：US16573329

申请日：2019-09-17

Applicant: Samsung Electronics Co., Ltd.

Inventor： Wooram LEE ,  Seho PARK ,  Yusu KIM ,  Kyungmin PARK ,  Juhyang LEE ,  Byungyeol CHOI

IPC: H02J50/80 ,  H02J50/10 ,  H02J7/02

Abstract: 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.

公开(公告)号：US20190222073A1

公开(公告)日：2019-07-18

申请号：US16246726

申请日：2019-01-14

Applicant: Samsung Electronics Co., Ltd.

Inventor： Wooram LEE ,  Hyungjun KWON ,  Yusu KIM ,  Kyungmin PARK ,  Juhyang LEE ,  Byungyeol CHOI

IPC: H02J50/80 ,  H02J7/02 ,  H02J50/12 ,  H02J7/00 ,  H02J50/60 ,  H04L5/00 ,  H04B5/00

CPC classification number: H02J50/80 ,  H02J50/10 ,  H02J50/60 ,  H04B5/0037

Abstract: 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.