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公开(公告)号：US20210066948A1
公开(公告)日：2021-03-04
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
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：US20230103280A9
公开(公告)日：2023-03-30
申请号：US17748569
申请日：2022-05-19
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Tao DING , Yongfa ZHU , Zhensheng CHEN , Kaijun LIU
Abstract: Embodiments of this application disclose a wireless charging system. The wireless charging system includes a first electronic device, a wireless charging device, and a second electronic device. The wireless charging device is located between the first electronic device and the second electronic device. The wireless charging device is an auxiliary device of the first electronic device and is physically connected to the first electronic device, the wireless charging device includes a receiver circuit and a housing, the receiver circuit includes a receiver coil, and the receiver coil is located on an inner side of the housing. The first electronic device is configured to: charge the wireless charging device, charge the second electronic device through the wireless charging device, and receive power from the second electronic device through the wireless charging device.
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公开(公告)号：US20220216734A1
公开(公告)日：2022-07-07
申请号：US17703709
申请日：2022-03-24
Applicant: Huawei Technologies Co., Ltd.
Inventor： Shaojie FENG , Zhiqiang ZENG , Yongfa ZHU , Jin QIU
Abstract: This application discloses a wireless charging system, and pertains to the field of wireless charging technologies. The system includes: a transmit apparatus and a receive apparatus; the transmit apparatus includes an inverter circuit and two transmit electrodes, an input terminal of the inverter circuit is connected to a direct-current power supply, and two output terminals of the inverter circuit are connected to the two transmit electrodes respectively; the receive apparatus includes two receive electrodes and a rectifier circuit, two input terminals of the rectifier circuit are connected to the two receive electrodes respectively, and an output terminal of the rectifier circuit is connected to a load.
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公开(公告)号：US20250105751A1
公开(公告)日：2025-03-27
申请号：US18969614
申请日：2024-12-05
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yongfa ZHU , Zhiqiang ZENG , Xiangyuan DENG , Jinsen CAI , Benhu LI , Haitao CHEN , Chengfeng JIANG
Abstract: This disclosure provides a converter and an electronic device that incorporates the converter. The converter includes: an input terminal, a first inverter circuit, a first transformer, a first rectifier circuit, and an output terminal. The first transformer includes a first primary-side winding and a first secondary-side winding. The input terminal is connected to a first terminal of the first inverter circuit, a second terminal of the first inverter circuit is connected to the first primary-side winding, and the first rectifier circuit is connected between the first secondary-side winding and the output terminal. A third terminal of the first inverter circuit is connected to the output terminal; or a third terminal of the first inverter circuit is connected to the first secondary-side winding. In this disclosure, a loss of the converter can be reduced.
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公开(公告)号：US20230344343A1
公开(公告)日：2023-10-26
申请号：US18325289
申请日：2023-05-30
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yongfa ZHU , Zhiqiang ZENG , Jinsen CAI , Heqian YANG , Xiaowei CHEN , Tao DING
CPC classification number: H02M3/158 , H02M1/0009 , H02M1/0025 , H02M1/007
Abstract: This application provides a conversion circuit, a switch-mode power supply, and an electronic device. The conversion circuit mainly includes a first branch circuit and a second branch circuit. Input sides of the first branch circuit and the second branch circuit are connected in series, and output sides of the first branch circuit and the second branch circuit are connected in parallel; or input sides of the first branch circuit and the second branch circuit are connected in parallel, and output sides of the first branch circuit and the second branch circuit are connected in series. This implementation helps improve efficiency of the conversion circuit. When an inductor is disposed in the conversion circuit, a size of the inductor is further reduced, to improve integration.
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Patent Agency Ranking
公开(公告)号：US20210210991A1
公开(公告)日：2021-07-08
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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7.发明公开公开(公告)号：US20240356381A1
公开(公告)日：2024-10-24
申请号：US18758006
申请日：2024-06-28
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Shaojie FENG , Zhongnan QIAN , Yongfa ZHU , Xiaowei CHEN , Quanhao SUN , Zhiqiang DUAN , Jiangtao YANG
CPC classification number: H02J50/402 , H02J50/005 , H02J50/05 , H02J50/70
Abstract: This application provides a wireless charging transmitting apparatus, a wireless charging receiving apparatus, and a system thereof. The wireless charging transmitting apparatus includes an inverter circuit, a first transmitting plate, and a second transmitting plate. The wireless charging receiving apparatus includes a first receiving plate, a second receiving plate, and a rectifier circuit. An input end of the inverter circuit is connected to a direct current power supply, a first output end of the inverter circuit is connected to the first transmitting plate, and a second output end of the inverter circuit is connected to the second transmitting plate. A first contact is disposed on the first transmitting plate, and a second contact is disposed on the first receiving plate. When the first contact is in contact with the second contact, the first transmitting plate establishes an electrical connection to the first receiving plate.
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公开(公告)号：US20220278557A1
公开(公告)日：2022-09-01
申请号：US17748569
申请日：2022-05-19
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Tao DING , Yongfa ZHU , Zhensheng CHEN , Kaijun LIU
Abstract: Embodiments of this application disclose a wireless charging system. The wireless charging system includes a first electronic device, a wireless charging device, and a second electronic device. The wireless charging device is located between the first electronic device and the second electronic device. The wireless charging device is an auxiliary device of the first electronic device and is physically connected to the first electronic device, the wireless charging device includes a receiver circuit and a housing, the receiver circuit includes a receiver coil, and the receiver coil is located on an inner side of the housing. The first electronic device is configured to: charge the wireless charging device, charge the second electronic device through the wireless charging device, and receive power from the second electronic device through the wireless charging device.
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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
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.
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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
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.
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