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1.发明授权公开(公告)号：US11870275B2
公开(公告)日：2024-01-09
申请号：US17134084
申请日：2020-12-24
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yunhe Mao , Zhixian Wu , Yanding Liu , Furong Xiao
IPC: H02J50/60 , H02J50/12 , B60L53/124
CPC classification number: H02J50/60 , H02J50/12 , B60L53/124 , H02J2310/48
Abstract: An apparatus and a method for detecting a metal foreign matter in a wireless charging system, and a device are provided. The apparatus includes a phase-lock control module, an excitation module, a resonance module, a signal collection module, and a determining module. The phase-lock control module is configured to: adjust a frequency of a first signal and output the first signal to the excitation module and the determining module. The excitation module is configured to: generate a second signal based on the first signal, and output the second signal to the resonance module. The resonance module is configured to output the third signal to the signal collection module under excitation of the second signal. The determining module is configured to determine whether there is a metal foreign matter in an area of the target coil.
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公开(公告)号：US20190036354A1
公开(公告)日：2019-01-31
申请号：US16148305
申请日：2018-10-01
Applicant: Huawei Technologies Co., Ltd.
Inventor： Xujun Liu , Ce Liu , Yanding Liu , Jinbo Ma , Pinghua Wang
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：US20240266841A1
公开(公告)日：2024-08-08
申请号：US18638973
申请日：2024-04-18
Applicant: Huawei Technologies Co., Ltd.
Inventor： Xujun Liu , Ce Liu , Yanding Liu , Jinbo Ma , Pinghua Wang
CPC classification number: H02J7/00 , G01R31/3648 , H02J7/0042 , H02J7/00712 , H02J7/007184 , H01M10/4257 , H02J7/00034
Abstract: A terminal and a fast charging 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：US11581745B2
公开(公告)日：2023-02-14
申请号：US16924509
申请日：2020-07-09
Applicant: Huawei Technologies Co., Ltd.
Inventor： Xujun Liu , Ce Liu , Yanding Liu , Jinbo Ma , Pinghua Wang
Abstract: A terminal and a fast charging 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：US10819127B2
公开(公告)日：2020-10-27
申请号：US16359451
申请日：2019-03-20
Applicant: Huawei Technologies Co., Ltd.
Inventor： Xinyu Liu , Yanding Liu , Ce Liu , Pinghua Wang , Jinbo Ma
IPC: H02J7/00
Abstract: A charging circuit in a terminal, or a charging system, is respectively coupled to a charger, a terminal load, and a battery. The charging circuit includes a first adjustment circuit, a current detection circuit, a voltage detection circuit, and a control circuit. A first end of the first adjustment circuit is coupled to the charger, a second end of the first adjustment circuit is further coupled to the terminal load, a third end of the first adjustment circuit is coupled to the control circuit, and a second end of the current detection circuit is coupled to a positive electrode of the battery.
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Patent Agency Ranking
公开(公告)号：US10749357B2
公开(公告)日：2020-08-18
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：US11962176B2
公开(公告)日：2024-04-16
申请号：US17880288
申请日：2022-08-03
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Xinyu Liu , Pinghua Wang , Ce Liu , Yanding Liu , Jinbo Ma
CPC classification number: H02J7/0031 , H01M10/425 , H01M10/46 , H02J7/0029 , H02J7/00304 , H02J7/0045 , H02J7/34 , H01M2010/4271 , H02J7/00302 , H02J7/00306 , H02J7/00308 , H02J7/00309
Abstract: Example devices are described. One example device includes a battery. The battery includes a battery charging port, a battery discharging port, a battery negative port, a protection integrated circuit, a control switch, and an electrochemical cell. The battery charging port and the battery discharging port are ports independent of each other. The battery charging port is connected to a first electrode of the electrochemical cell, and a second electrode of the electrochemical cell is connected to a first end of the control switch, and a second end of the control switch is connected to the battery negative port. The protection integrated circuit is connected in parallel to electrodes of the electrochemical cell, and the protection integrated circuit is further connected to a third end of the control switch. The battery discharging port is connected to the first electrode of the electrochemical cell.
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公开(公告)号：US20230275393A1
公开(公告)日：2023-08-31
申请号：US18310204
申请日：2023-05-01
Applicant: Huawei Technologies Co., Ltd.
Inventor： Ce Liu , Zefeng Lu , Mingqiang Wang , Yanding Liu
CPC classification number: H01S3/101 , H01S3/086 , H01S3/106 , G02B26/105 , H01S3/08059 , H01S3/10069 , H02J50/30
Abstract: A laser emitting apparatus includes a detection and control system, a pump source, a first reflecting mirror group, a gain medium, and a beam deflection system on an optical path. The gain medium is pumped by the pump source to emit fluorescence, and is stimulated by resonance, between the first reflecting mirror group and a laser receiving apparatus, of the fluorescence to emit laser light. The beam deflection system emits the fluorescence or the laser light emitted by the gain medium, and emits the fluorescence or the laser light reflected by the laser receiving apparatus into the gain medium. The detection and control system adjusts the beam deflection system to preset emission angles, detects light intensities of the fluorescence or the laser light, and a light spot position of the laser light on the detection and control system, and adjusts the emission angle based on the light spot position.
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公开(公告)号：US11527883B2
公开(公告)日：2022-12-13
申请号：US16825061
申请日：2020-03-20
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Xinyu Liu , Yanding Liu , Ce Liu , Pinghua Wang , Yong Cao
Abstract: A battery protection apparatus power protection apparatus is configured to protect an electrochemical cell connected to a load, and includes a protection IC, a switching transistor group, and a sampling resistor. The protection IC includes two power input terminals respectively connected to positive and negative electrodes of the electrochemical cell, and an operational amplifier, where the operational amplifier includes a positive input pin, a negative input pin, and an output pin. The switching transistor group is connected between the negative electrode of the electrochemical cell and the load, and is configured to control turn-on and turn-off of a charge and discharge circuit of the electrochemical cell. The sampling detection resistor Rs is serially connected between the sampling circuit detection terminal and the output pin, where the main circuit detection terminal is connected to the positive input pin, and the sampling circuit detection terminal is connected to the negative input pin.
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公开(公告)号：US10734830B2
公开(公告)日：2020-08-04
申请号：US16148305
申请日：2018-10-01
Applicant: Huawei Technologies Co., Ltd.
Inventor： Xujun Liu , Ce Liu , Yanding Liu , Jinbo Ma , Pinghua Wang
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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