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11.发明授权公开(公告)号：US11901760B2
公开(公告)日：2024-02-13
申请号：US17226860
申请日：2021-04-09
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yunhe Mao , Yanding Liu
CPC classification number: H02J7/02 , H02J50/12 , H02M1/0058 , H02M7/219
Abstract: Example wireless charging systems and methods are disclosed. One example system includes a receive end and a transmit end. The receive end includes a receive coil, a receive end compensation circuit, a rectifier, and a controller. The controller adjusts a phase difference between a first bridge arm and a second bridge arm of the rectifier, and adjusts a phase-shift angle between a bridge arm voltage of the rectifier and a fundamental component of an input current of the rectifier, so that zero-voltage switching is implemented for controllable switching transistors of the rectifier. An inductance compensation module may weaken a capacitive part of the equivalent impedance, and reduce reactive power of the wireless charging system.
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公开(公告)号：US20230155392A1
公开(公告)日：2023-05-18
申请号：US18156173
申请日：2023-01-18
Applicant: Huawei Technologies Co., Ltd.
Inventor： Xujun Liu , Ce Liu , Yanding Liu , Jinbo Ma , Pinghua Wang
CPC classification number: H02J7/00 , H02J7/007184 , H02J7/00712 , G01R31/3648 , H02J7/0042 , H01M10/4257
Abstract: A terminal and a fast charging method to fast charge the terminal, where the method includes sending, by the terminal, instruction information to a charger connected to the terminal in order to instruct the charger to adjust an output voltage and an output current, converting, by the terminal, the output voltage of the charger into 1/K times the output voltage, and converting the output current of the charger into K times the output current such that a charging circuit between two sides of a battery charges the battery with the 1/K times the output voltage and the K times the output current, where K is a conversion coefficient of a conversion circuit with a fixed conversion ratio in the terminal and is a constant value, and K is any real number greater than one.
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公开(公告)号：US11444470B2
公开(公告)日：2022-09-13
申请号：US16935828
申请日：2020-07-22
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Xinyu Liu , Pinghua Wang , Ce Liu , Yanding Liu , Jinbo Ma
Abstract: Example batteries, terminals, and charging systems are described. One example battery includes a battery charging port, a battery discharging port, a battery negative port, an overcurrent protection element, a protection integrated circuit, a control switch, and an electrochemical cell. The battery charging port is connected to a positive electrode of the electrochemical cell. The control switch is connected in series between a negative electrode of the electrochemical cell and the battery negative port. The protection integrated circuit is connected in parallel to two ends of the electrochemical cell. The protection integrated circuit is further connected to the control switch so as to send a control signal to the control switch. In addition, the overcurrent protection element is connected in series between the battery discharging port and the positive electrode of the electrochemical cell. The battery provided in the present application has both a charging path and a discharging path.
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公开(公告)号：US11362527B2
公开(公告)日：2022-06-14
申请号：US16197471
申请日：2018-11-21
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Ce Liu , Xujun Liu , Yanding Liu , Yunfeng Liu , Jinbo Ma
Abstract: A charging method, a terminal, a charger, and a system, includes: obtaining, by a terminal, a charging mode supported by a charger connected to the terminal; when the charging mode supported by the charger includes an open-loop fast charging mode, detecting, by the terminal, whether both the terminal and the charger are in an open loop state; when both the terminal and the charger are in the open loop state, sending, by the terminal, an open-loop fast charging instruction to the charger; and receiving, by the terminal, a voltage and a current that are transmitted by the charger according to the open-loop fast charging instruction, and performing charging in the open-loop fast charging mode. When determining that the charger supports charging in the open-loop fast charging mode, the terminal is adjusted to the open loop state to perform charging, so as to shorten a charging time and improve user experience.
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15.发明授权公开(公告)号：US11190042B2
公开(公告)日：2021-11-30
申请号：US17157697
申请日：2021-01-25
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yunhe Mao , Yanding Liu
IPC: H02J7/06 , H02J50/10 , H02M7/5387 , B60L53/122
Abstract: This application discloses wireless charging apparatuses, methods, and systems. One apparatus includes: a direct current to alternating current (DC-to-AC) inverter circuit configured to invert a DC output by a DC power supply to an AC; a compensation circuit configured to compensate the AC output by the DC-to-AC inverter circuit and send the AC obtained after the compensation to a transmitting coil; the transmitting coil configured to receive the AC and generate an AC magnetic field; an impedance adjustment circuit comprising one or more inductive branches; and a controller configured to control on or off of the switch in the inductive branch to change a current flowing out of the lagging bridge arm to enable a controllable switching transistor of the lagging bridge arm to implement zero-voltage switching.
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Patent Agency Ranking
公开(公告)号：US20210091599A1
公开(公告)日：2021-03-25
申请号：US17113328
申请日：2020-12-07
Applicant: Huawei Technologies Co., Ltd.
Inventor： Qitang Liu , Ce Liu , Weiliang Shu , Yanding Liu , Pinghua Wang , Yong Cao
Abstract: A wireless charging apparatus includes a receive end coil, a switch selection circuit, a plurality of charging circuits, and a receive end controller. An input end of the switch selection circuit is connected to an output end of the receive end coil, and an output end of the switch selection circuit is connected to an input end of each of the charging circuits.
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公开(公告)号：US10797493B2
公开(公告)日：2020-10-06
申请号：US16359061
申请日：2019-03-20
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Xinyu Liu , Pinghua Wang , Ce Liu , Yanding Liu , Jinbo Ma
Abstract: An example battery, a terminal, or a charging system can include a battery charging port, a battery discharging port, a battery negative port, an overcurrent protection element, a protection integrated circuit, a control switch, and an electrochemical cell. The battery charging port is connected to a positive electrode of the electrochemical cell, the control switch is connected in series between a negative electrode of the electrochemical cell and the battery negative port, the protection integrated circuit is connected in parallel to two ends of the electrochemical cell, and the protection integrated circuit is further connected to the control switch, so as to send a control signal to the control switch. In addition, the overcurrent protection element is connected in series between the battery discharging port and the positive electrode of the electrochemical cell.
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公开(公告)号：US12272963B2
公开(公告)日：2025-04-08
申请号：US17669718
申请日：2022-02-11
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yunhe Mao , Yanding Liu
Abstract: A wireless charging transmitting apparatus and method and a wireless charging system are provided. The transmitting apparatus includes a compensation circuit, an inverter circuit, a transmitting coil, an impedance adjustment circuit, and a controller. The impedance adjustment circuit includes a leading-bridge-arm impedance adjustment circuit and a lagging-bridge-arm impedance adjustment circuit, and the leading-bridge-arm impedance adjustment circuit and the lagging-bridge-arm impedance adjustment circuit each include an inductive branch, where the inductive branch includes at least one controllable inductive branch, and each controllable inductive branch includes at least one inductor and at least one switch. The controller controls the switches in the controllable inductive branches to be turned on or off, to adjust values of inductive currents injected into a leading bridge arm and a lagging bridge arm through the impedance adjustment circuit.
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公开(公告)号：US12176969B2
公开(公告)日：2024-12-24
申请号：US17989517
申请日：2022-11-17
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yanding Liu , Weiliang Shu , Furong Xiao , Qitang Liu
Abstract: A terminal device and a method for controlling the terminal device are provided. The terminal device includes a display screen, a housing, a middle frame and a transmitting circuit. The transmitting circuit is disposed on a side of the middle frame and faces the housing. The transmitting circuit includes a matching network and a transmitting coil connected to the matching network. The matching network is configured to perform impedance matching on a received alternating current power signal and send the received alternating current power signal to the transmitting coil. The matching network includes a parallel resonant capacitor connected in parallel to the transmitting coil. The transmitting circuit further includes a resistance switching circuit connected in series to the parallel resonant capacitor.
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公开(公告)号：US12021407B2
公开(公告)日：2024-06-25
申请号：US17244017
申请日：2021-04-29
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yunhe Mao , Zhixian Wu , Xiaosheng Zeng , Yanding Liu
Abstract: A wireless charging receiving apparatus is provided, which includes a receiver coil, a rectifier, and a controller. The receiver coil is configured to receive electromagnetic energy and output an alternating current. The rectifier includes at least two controllable switches, and is configured to rectify the alternating current from the receiver coil to a direct current s. The controller is configured to perform phase-locking on a phase of a current fundamental component of the alternating current received by the rectifier, to obtain a periodic signal having a same frequency as the current fundamental component; and the controller is further configured to: generate a synchronization reference signal having the same frequency as the periodic signal, generate drive signals of the controllable switches in the rectifier based on the synchronization reference signal, and control, based on the drive signals, controllable switches in the rectifier to convert the alternating current into the direct current.
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