公开(公告)号：US20230179028A1

公开(公告)日：2023-06-08

申请号：US18094066

申请日：2023-01-06

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Hyungkoo CHUNG ,  Dongzo KIM ,  Mincheol HA ,  Yusu KIM ,  Kihyun KIM ,  Yunjeong NOH ,  Keyic SON ,  Taehyeon YU ,  Kyungmin LEE

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

CPC classification number: H02J50/80 ,  H02J50/60 ,  H02J50/12

Abstract: An electronic device capable of transmitting and receiving wireless power may include a wireless power transfer (WPT) coil and a processor configured to be operatively connected to the WPT coil, wherein the processor may perform control to transmit a first ping signal to an external object through the WPT coil, may identify a waveform of a current or voltage measured while or after transmitting the first ping signal, may obtain a Q factor, based on the identified waveform, may control a power transmission operation by determining that the external object is a foreign object or includes the foreign object and is positioned on a center of the WPT coil when the obtained Q factor is less than a predetermined Q factor, may transmit a second ping signal to the external object through the WPT coil when the obtained Q factor is equal to or greater than the predetermined Q factor, may identify a waveform of a current or voltage while or after transmitting the second ping signal, may identify inductance measured at both ends of the WPT coil, based on the identified waveform, and may control the power transmission operation by determining that the external object is the foreign object or includes the foreign object and is positioned in a surrounding area of the WPT coil, based on the measured inductance.

公开(公告)号：US20220278552A1

公开(公告)日：2022-09-01

申请号：US17745221

申请日：2022-05-16

Applicant: Samsung Electronics Co., Ltd.

Inventor： Seho PARK ,  Kyoungwon KIM ,  Yusu KIM ,  Yongsang YUN ,  Chihyun CHO

IPC: H02J50/10 ,  H04B5/00 ,  H04B1/04 ,  H04L27/04 ,  H04B1/16 ,  H04L27/12

Abstract: 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.

公开(公告)号：US20210399591A1

公开(公告)日：2021-12-23

申请号：US17288624

申请日：2019-10-25

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kyoungwon KIM ,  Yusu KIM ,  Kyungmin PARK ,  Juhyang LEE ,  Byungyeol CHOI

IPC: H02J50/80 ,  H04B5/00 ,  H04L27/02 ,  H02J50/12

Abstract: An electronic device according to various embodiments may be configured to cause a control circuit to: control a first switch, a second switch, or a combination of the first switch and the second switch, in order to electrically connect a ground terminal to a first capacitor, a second capacitor, or a combination of the first capacitor and the second capacitor, while the electronic device operates in a first mode for providing power to a first external electronic device; control the first switch and the second switch in order to electrically disconnect the first capacitor and the second capacitor from the ground terminal, and control the third switch in order to control a path of an electrical signal which passes through the fourth capacitor, while the electronic device operates in a second mode for acquiring power from a second external electronic device.

公开(公告)号：US20210194285A1

公开(公告)日：2021-06-24

申请号：US16756774

申请日：2018-08-16

Applicant: Samsung Electronics Co., Ltd.

Inventor： Seho PARK ,  Yusu KIM ,  Juhyang LEE ,  Yongsang YUN ,  Chihyun CHO

IPC: H02J50/12 ,  H02J50/80 ,  H02J50/00

Abstract: Provided in various embodiments are an electronic device for receiving wireless power and an operating method of the electronic device, the electronic device comprising: a power receiving circuit including a wireless coil for receiving power from an external electronic device and a rectifying circuit for converting, into a direct current signal, an electric signal received from the external electronic device; a sensing circuit for determining a state of the electronic device by checking a signal applied to the wireless power receiving circuit by means of the external electronic device; and a processor, wherein the processor can be set so as to receive an output signal of the sensing circuit and control, on the basis of the output signal, a gate voltage of at least one field effect transistor (FET) element connected to an input terminal of the rectifying circuit. Other various embodiments are possible.

公开(公告)号：US20200185979A1

公开(公告)日：2020-06-11

申请号：US16705357

申请日：2019-12-06

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: H02J50/90 ,  H02J50/10 ,  H02J50/80 ,  H02J7/02

Abstract: Disclosed is an electronic device. A wireless power transferring device includes a first interface comprising interface circuitry, a conversion circuit, a coil, and a control circuit. The control circuit is configured to control the device to communicate with the power supply device to identify maximum supply power of the power supply device and set maximum transfer power to the maximum supply power or less based on the power supply device being connected to the first interface, to generate the transfer power based on power supplied from the power supply device using the conversion circuit, to transfer the generated transfer power to a wireless power receiving device using the coil, to determine whether the request is for power adjustment exceeding the maximum transfer power based on receiving a request for power adjustment from the wireless power receiving device, to adjust the transfer power using the conversion circuit in response to the request based on the request not being for power adjustment exceeding the maximum transfer power, and to ignore the request to adjust the transfer power based on the request for power adjustment exceeding the maximum transfer power.

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：US20220209581A1

公开(公告)日：2022-06-30

申请号：US17583773

申请日：2022-01-25

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yusu KIM ,  Dohyeon KIM ,  Seho PARK ,  Byunghwa PARK

IPC: H02J50/12 ,  H04B5/00

Abstract: 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.

公开(公告)号：US20200266667A1

公开(公告)日：2020-08-20

申请号：US16794649

申请日：2020-02-19

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Juhyang LEE ,  Kyungmin PARK ,  Yusu KIM ,  Hyundeok SEO ,  Hyunho LEE ,  Byungyeol CHOI ,  Chihyun CHO

IPC: H02J50/12 ,  H02J50/00 ,  H02J7/00

Abstract: 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.

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.