公开(公告)号：US20190109542A1

公开(公告)日：2019-04-11

申请号：US16212822

申请日：2018-12-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Heqian YANG ,  Changsheng PEI ,  Yongtao LIANG

IPC: H02M3/335 ,  H01F27/28 ,  H01F30/12 ,  H02M3/28 ,  H01F27/24

Abstract: A magnetic integrated device is disclosed, the device includes: a first magnetic core base and a second magnetic core base that are parallel and a first magnetic core column, a second magnetic core column, and a third magnetic core column that are located between the first magnetic core base and the second magnetic core base; and a first winding, a second winding, and a third winding are wound on the first magnetic core column, the second magnetic core column, and the third magnetic core column respectively in a same manner to form a closed magnetic flux loop, where the first winding, the second winding, and the third winding are separately used for connecting to a branch of a three-phase parallel circuit, and in all branches of the three-phase parallel circuit, values of currents are the same, and a difference between each two current phases is 120 degrees.

公开(公告)号：US20180048223A1

公开(公告)日：2018-02-15

申请号：US15794817

申请日：2017-10-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Changsheng PEI ,  Yongbing GAO ,  Heling ZHANG

IPC: H02M1/12 ,  H02M1/15 ,  H02M1/44

CPC classification number: H03H1/0007 ,  H02J3/01 ,  H02J3/1835 ,  H02J3/24 ,  H02M1/12 ,  H02M2001/123 ,  H03D3/08 ,  H03H7/427 ,  Y02E40/30 ,  Y02E40/40

Abstract: A filter apparatus, which includes a feedback active common-mode filter and a feed-forward active common-mode filter, the feedback active common-mode filter includes a common-mode noise detection component and a first filter circuit, and the feed-forward active common-mode filter includes the common-mode noise detection component and a second filter circuit, where the first filter circuit is connected between the common-mode noise detection component and the device, and performs feedback filtering on a first common-mode noise signal, to obtain a second common-mode noise signal; the common-mode noise detection component is connected between the first filter circuit and the second filter circuit, detects the second common-mode noise signal, and provides the second filter circuit with the second common-mode noise signal; and the second filter circuit is connected between an external power source and the common-mode noise detection component, and performs feed-forward filtering on the second common-mode noise signal.

公开(公告)号：US20210152028A1

公开(公告)日：2021-05-20

申请号：US17160730

申请日：2021-01-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yongfa ZHU ,  Tao DING ,  Heqian YANG ,  Changsheng PEI ,  Zhi ZHANG

IPC: H02J50/40 ,  H02J50/90 ,  H02J50/80 ,  H02J50/10

Abstract: A wireless charging device is disclosed, which includes: a charging pad and a first controller. The charging pad includes a plurality of charging units, the plurality of charging units include a first charging unit and a second charging unit. When a first electromagnetic coupling strength between the first charging unit and the to-be-charged device is greater than or equal to a first threshold, the first controller is configured to control the first charging unit to separately charge the to-be-charged device. When both the second electromagnetic coupling strength between the second charging unit and the to-be-charged device and the first electromagnetic coupling strength are less than a first threshold, and are greater than or equal to a second threshold, the first controller is configured to control the first charging unit and the second charging unit to jointly charge the target to-be-charged device.

公开(公告)号：US20210075261A1

公开(公告)日：2021-03-11

申请号：US16951883

申请日：2020-11-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hongliang CHEN ,  Wei CHEN ,  Changsheng PEI ,  Yongfa ZHU

IPC: H02J50/12 ,  H02J7/02 ,  H02J50/80 ,  H02J7/00 ,  H02J50/40

Abstract: A wireless charging apparatus for a wireless power transmission system. The apparatus includes a voltage conversion circuit, an excitation coil, n first resonance coils, and a controller, where n is greater than or equal to 3. The voltage conversion circuit is connected to the excitation coil and converts a power grid voltage into a high-frequency alternating current voltage. The excitation coil generates a magnetic field based on the high-frequency alternating current voltage. The n first resonance coils are arranged in different directions and conducts the magnetic field, and the controller monitors power statuses of the first resonance coils, and enable or disable the first resonance coils based on the power statuses.

公开(公告)号：US20200279686A1

公开(公告)日：2020-09-03

申请号：US16878178

申请日：2020-05-19

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Changsheng PEI ,  Yongfa ZHU ,  Heqian YANG ,  Jinsen CAI

IPC: H01F27/28 ,  H01F27/29 ,  H01F27/34 ,  H01F38/14 ,  H02J50/12 ,  H02J50/40

Abstract: This application describes a coil. The coil includes an output terminal, an input terminal, and a wire-winding part that is connected between the output terminal and the input terminal. A slot is disposed on at least a part of the wire-winding part, and a depth of the slot in any direction of a cross section of the wire-winding part is less than or equal to a distance between two points that are the farthest away from each other on the cross section of the wire-winding part. The wire-winding part is a metal conductor made through spiral winding. The input terminal and the output terminal are configured to connect the wire-winding part to an external circuit.