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1.发明授权公开(公告)号：US11837877B2
公开(公告)日：2023-12-05
申请号：US17032158
申请日：2020-09-25
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Changsheng Pei , Yongfa Zhu , Zhiqiang Zeng , Xiaowei Chen
CPC classification number: H02J50/12 , H01F27/2871 , H01F27/323 , H01F38/14 , H02J7/04 , H02J50/10 , H02J2207/20
Abstract: This application discloses a coil module, which includes: an insulation layer, a first planar coil winding, and a second planar coil winding, one turn of coil of the first planar coil winding includes a first portion, a second portion, and a first connection part, and one turn of coil of the second planar coil winding includes a third portion, a fourth portion, and a second connection part. The first connection portion connects an outer side part of the first portion and an inner side part of the second portion, the second connection portion connects an inner side part of the third portion and an outer side part of the fourth portion, and there is an overlap between a projection of the first connection portion on a plane of the insulation layer and a projection of the second connection portion on the plane of the insulation layer.
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2.发明授权公开(公告)号：US11735956B2
公开(公告)日：2023-08-22
申请号：US16879309
申请日：2020-05-20
Applicant: Huawei Technologies Co., Ltd.
Inventor： Changsheng Pei , Zhiqiang Zeng , Yongfa Zhu
CPC classification number: H02J50/12 , H02J7/007182 , H02J50/80 , H02J50/90 , H02J50/402
Abstract: A wireless charging system includes a transmitter and a receiver, the transmitter includes a transmitter coil and a first series matching capacitor, the transmitter coil is connected to the first series matching capacitor in series to form a first oscillation circuit, and the first oscillation circuit is configured to transfer power to the receiver, and the receiver includes a receiver coil and a second series matching capacitor, the receiver coil is connected to the second series matching capacitor in series to form a second oscillation circuit, and the second oscillation circuit is configured to receive the power transferred by the first oscillation circuit.
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公开(公告)号：US10790079B2
公开(公告)日：2020-09-29
申请号：US16559231
申请日：2019-09-03
Applicant: Huawei Technologies Co., Ltd.
Inventor： Shijun Yang , Heqian Yang , Yongfa Zhu , Wei Chen
IPC: H01F27/245 , H01F10/16 , H01F41/32 , H01L49/02 , H02M3/158
Abstract: A thin film inductor includes a first magnetic thin film and a second magnetic thin film that are adjacent, the first magnetic thin film is nested in the second magnetic thin film, and a relative magnetic permeability of the first magnetic thin film is less than a relative magnetic permeability of the second magnetic thin film, and a difference between the relative magnetic permeability of the first magnetic thin film and the relative magnetic permeability of the second magnetic thin film is greater than or equal to a first threshold, where when a magnetic induction intensity of the second magnetic thin film reaches a saturated magnetic induction intensity of the second magnetic thin film, a magnetic induction intensity of the first magnetic thin film is less than or equal to a saturated magnetic induction intensity of the first magnetic thin film.
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4.发明授权公开(公告)号：US11887773B2
公开(公告)日：2024-01-30
申请号：US17158629
申请日：2021-01-26
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yongfa Zhu , Xiaowei Chen , Zhiqiang Zeng
CPC classification number: H01F27/32 , H01F27/2823 , H01F27/34 , H02J7/02 , H02J50/10 , H01F2027/348
Abstract: A coil winding includes a first part of coils and a second part of coils located on opposite sides of an insulation layer, where the first part of coils comprises a first segment of conducting wire, and the second part of coils comprises a second segment of conducting wire. The first segment of conducting wire and the second segment of conducting wire each includes N cutting openings. Both the first segment of conducting wire and the second segment of conducting wire are divided into N+1 sub conducting wires by the N cutting openings. The N+1 sub conducting wires in the first segment of conducting wire and the N+1 sub conducting wires in the second segment of conducting wire are electrically coupled in a one-to-one manner to form N+1 pairs of sub conducting wires including a crossover structure.
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公开(公告)号：US11796709B2
公开(公告)日：2023-10-24
申请号：US17096054
申请日：2020-11-12
Applicant: Huawei Technologies Co., Ltd.
Inventor： Mou He , Wei Chen , Yongfa Zhu
Abstract: A detection coil includes a first group of coils, a second group of coils, and a third group of coils that are continuously wound and coaxial, and the second group of coils is located between the first group of coils and the third group of coils. A coil that generates the first magnetic field is coaxial with the first group of coils, the second group of coils, and the third group of coils. A sum of the induced electromotive forces of the first group of coils, the second group of coils, and the third group of coils is zero. When a metal foreign matter exists, a sum of the induced electromotive forces of the first group of coils, the second group of coils, and the third group of coils is not zero.
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Patent Agency Ranking
公开(公告)号：US09299490B2
公开(公告)日：2016-03-29
申请号：US14308960
申请日：2014-06-19
Applicant: Huawei Technologies Co., Ltd.
Inventor： Quan Guo , Yongfa Zhu , Chengzhang Han
IPC: H01F5/00 , H01F27/28 , H05K7/02 , H05K1/16 , H01F17/00 , H01F17/06 , H05K1/02 , H05K3/42 , H02M3/158
CPC classification number: H01F27/2804 , H01F5/00 , H01F17/0013 , H01F17/06 , H01F2027/2809 , H02M3/06 , H02M3/158 , H02M3/1588 , H05K1/0218 , H05K1/0298 , H05K1/115 , H05K1/165 , H05K1/18 , H05K3/429 , H05K7/02 , H05K2201/086 , H05K2201/10015 , Y02B70/1466
Abstract: The present invention discloses a circuit board, including a substrate and a magnetic core, where the magnetic core is embedded into the substrate, at least one turn of a winding conductor wound around the magnetic core is arranged on the substrate, each turn of the winding conductor includes a first end-surface conductor and a second end-surface conductor that are separately arranged on two ends of the magnetic core, and each turn of the winding conductor further includes a first side-surface conductor that penetrates through the magnetic core from an inner side of the magnetic core and a second side-surface conductor that penetrates through the magnetic core from an outer side of the magnetic core. The circuit board and the power conversion apparatus having the circuit board provided by the present invention, achieve larger inductance, save materials, and reduce cost for fabricating a power conversion apparatus.
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公开(公告)号：US09160244B2
公开(公告)日：2015-10-13
申请号：US14466326
申请日：2014-08-22
Applicant: Huawei Technologies Co., Ltd.
Inventor： Zengyi Lu , Yongfa Zhu , Yadong Bai , Wei Chen , Zhaoguo Jin
CPC classification number: H02M3/3376 , H01F3/14 , H01F27/38 , H02M3/28 , H02M3/33592 , H02M2001/0064 , Y02B70/1475
Abstract: A magnetic integration double-ended converter with an integrated function of a transformer and an inductor includes an integrated magnetic member having a magnetic core with three magnetic columns having at least three windings (NP, NS1, NS2) and at least one energy storage air gap, where a primary winding (NP) and a first secondary winding (NS1) are both wound around a first magnetic column or are both wound around a second magnetic column and a third magnetic column, and a second secondary winding (NS2) is wound around the second magnetic column; an inverter circuit with double ends symmetrically working, acting on the primary winding (NP); and a group of synchronous rectifiers (SR1, SR2), gate electrode driving signals of which and gate electrode driving signals of a group of power switch diodes (S1, S2) of the inverter circuit with the double ends symmetrically working complement each other.
Abstract translation: 具有变压器和电感器的集成功能的磁集成双端转换器包括具有磁芯的集成磁性构件，磁芯具有三个具有至少三个绕组（NP，NS1，NS2）的磁柱和至少一个储能气隙 ，其中初级绕组（NP）和第一次级绕组（NS1）都卷绕在第一磁性柱上，或者二者缠绕在第二磁性柱和第三磁性柱上，并且第二次级绕组（NS2）缠绕在 第二磁柱; 作用在初级绕组（NP）上的双端对称工作的逆变电路; 和一组同步整流器（SR1，SR2），其双极端对称工作的逆变器电路的一组电源开关二极管（S1，S2）的栅电极驱动信号和栅电极驱动信号相互补充。
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公开(公告)号：US12057730B2
公开(公告)日：2024-08-06
申请号：US17096025
申请日：2020-11-12
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yongfa Zhu , Xiaowei Chen , Jin Qiu , Xueyan Huang , Tao Ding
CPC classification number: H02J7/02 , H01F38/14 , H02J7/0042 , H02J50/005 , H02J50/10
Abstract: This application provides a charging pad used in a wireless charger. The charging pad can be wound. Specifically, the charging pad includes a rigid region and a flexible region, and a structure of the rigid region is different from a structure of the flexible region. A rigid support plate is disposed in the rigid region, and a metal line in the flexible region is in a metal hinge structure or is a bendable metal conducting wire. In addition, this application further provides a wireless charger to which the charging pad is applied.
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公开(公告)号：US11923690B2
公开(公告)日：2024-03-05
申请号：US16951883
申请日：2020-11-18
Applicant: Huawei Technologies Co., Ltd.
Inventor： Hongliang Chen , Wei Chen , Changsheng Pei , Yongfa Zhu
CPC classification number: H02J50/12 , H02J7/0047 , H02J7/02 , H02J50/40 , H02J50/80 , H04B1/3827
Abstract: A wireless charging apparatus for a wireless power transmission system and a method are provided. 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.
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10.发明授权公开(公告)号：US11329521B2
公开(公告)日：2022-05-10
申请号：US17209484
申请日：2021-03-23
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Mou He , Wei Chen , Yongfa Zhu , Shaojie Feng
Abstract: This application provides a wireless charging foreign object detection apparatus, applied to the field of wireless charging technologies. The detection apparatus includes: an excitation coil configured to provide a time-varying magnetic field, detection coils configured to detect a foreign object, and a processor configured to determine whether a foreign object exists. The detection coils may include two detection coils, or may include at least three detection coils. The at least three detection coils may be further configured to eliminate a detection blind spot.
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