-
1.发明申请公开(公告)号：US20210226473A1
公开(公告)日：2021-07-22
申请号：US17226860
申请日：2021-04-09
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yunhe MAO , Yanding LIU
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.
-
公开(公告)号：US20190222039A1
公开(公告)日：2019-07-18
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.
-
公开(公告)号：US20230090857A1
公开(公告)日：2023-03-23
申请号：US17992216
申请日：2022-11-22
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.
-
公开(公告)号：US20220376521A1
公开(公告)日：2022-11-24
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
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.
-
公开(公告)号：US20220255358A1
公开(公告)日：2022-08-11
申请号：US17732713
申请日：2022-04-29
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yunhe MAO , Zhixian WU , Yanding LIU
IPC: H02J50/12 , H02J50/80 , H02J7/00 , H02M7/217 , B60L53/126
Abstract: A wireless charging receiver, system, and control method, and relates to the field of wireless charging technologies are disclosed. A receiver coil of the receiver converts an alternating magnetic field transmitted by a transmitter to an alternating current, and delivers the alternating current to a compensation network. The compensation network compensates the alternating current, and then delivers the compensated alternating current to a rectifier. The rectifier rectifies the compensated alternating current to a direct current, and supplies the direct current to a load. The compensation network is a compensation circuit with a current source characteristic, so that the receiver coil and the compensation network, acting together with the transmitter, make an input end of the rectifier a constant current source.
-
Patent Agency Ranking
公开(公告)号：US20240332995A1
公开(公告)日：2024-10-03
申请号：US18599527
申请日：2024-03-08
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 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.
-
公开(公告)号：US20230231506A1
公开(公告)日：2023-07-20
申请号：US18189305
申请日：2023-03-24
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Wingto FAN , Weiliang SHU , Yanding LIU , Qitang LIU , Hongcheng YOU
IPC: H02P29/028 , H02P29/032 , H01F13/00
CPC classification number: H02P29/028 , H01F13/006 , H02P29/032 , H02P2207/05
Abstract: A protection apparatus and a brushless motor system reduce costs of the brushless motor system and ensure normal operation of a brushless motor. The protection apparatus includes a demagnetization apparatus and a control apparatus. The demagnetization apparatus is configured to be bridged between a rectifier circuit and an excitation winding, and is configured to consume, when the brushless motor system is faulty, excess electric energy generated on the excitation winding. The control apparatus is configured to separately connect to an excitation power supply circuit and a controller; and is configured to detect electrical parameters of an input terminal and an output terminal of the excitation power supply circuit, and when determining that the electrical parameters exceed a preset threshold, generate an alarm to the controller and adjust the output electrical parameter of the excitation power supply circuit.
-
公开(公告)号：US20230179030A1
公开(公告)日：2023-06-08
申请号：US18154217
申请日：2023-01-13
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Hongcheng YOU , Xiaosheng ZENG , Yunhe MAO , Zhixian WU , Shuangquan CHEN , Yanding LIU
IPC: H02J50/90 , B60L53/122 , H02J50/12
CPC classification number: H02J50/90 , B60L53/122 , H02J50/12
Abstract: Example positioning system based on a low frequency magnetic field and apparatus are described. One example positioning system includes a low frequency magnetic field transmit apparatus and a low frequency magnetic field receive apparatus. The transmit apparatus includes a transmit coil, a conflict detect coil, and a magnetic field generation detection control module. The receive apparatus includes a receive coil and a magnetic field detection control module. When the conflict detect coil does not sense a low frequency magnetic field signal, the magnetic field generation detection control module controls the transmit coil to transmit a first low frequency magnetic field signal. When the received low frequency magnetic field signal is the first low frequency magnetic field signal, the magnetic field detection control module determines relative positions of the transmit coil and the receive coil based on signal strength of the first low frequency magnetic field signal.
-
公开(公告)号：US20230155419A1
公开(公告)日：2023-05-18
申请号：US18157703
申请日：2023-01-20
Applicant: Huawei Technologies Co., Ltd.
Inventor： Weiliang SHU , Hongcheng YOU , Qitang LIU , Wingto FAN , Yanding LIU
CPC classification number: H02J50/12 , H04B5/0037
Abstract: A power regulation method, apparatus, and device for NFC communication and NFC charging are disclosed. The apparatus includes: an NFC power converter, an NFC coil, an NFC circuit, a controller, and a power regulator. The NFC power converter is configured to connect to a direct-current power supply and generate a high-frequency alternating-current output. The NFC coil is configured to generate/receive an NFC high-frequency magnetic field and transmit/receive NFC power or an NFC signal. The NFC circuit is connected to the NFC power converter and is configured to transmit/receive the high-frequency alternating-current output. The controller is configured to generate different power control signals based on different operating modes of an NFC apparatus.
-
公开(公告)号：US20200350772A1
公开(公告)日：2020-11-05
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.
-
-
-
-
-
-
-
-
-
Search Results
18
records
(took 0.016 seconds)
