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    BATTERY CHARGING METHOD AND APPARATUS
    22.
    发明申请
    BATTERY CHARGING METHOD AND APPARATUS 有权

    公开(公告)号：US20210328449A1

    公开(公告)日：2021-10-21

    申请号：US17357077

    申请日：2021-06-24

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Liangyu Li ,  Juan Li ,  Pinghua Wang ,  Yong Cao ,  Yangxing Li

    IPC: H02J7/00 ,  H01M10/44 ,  H01M10/48

    Abstract: In a method of charging a battery, a charging control device obtains a battery parameter that includes an electrode parameter of the battery and one or more of a structure parameter, a manufacturing process parameter, an electrical parameter, an electrolyte parameter, a diaphragm parameter, and a thermophysical parameter of the battery. The charging control device inputs the battery parameter input into a battery model represented by an ordinary differential equation to obtain a safe charging boundary value of the battery in n cycles, where n is greater than or equal to 2 and less than or equal to N, N is a cycle life of the battery, and the n cycles refer to n cycles selected from 0 to N cycles. The safe charging boundary value is a maximum charging current in which no lithium plating occurs on the battery in different states of charge SOCs and at different temperatures.

    Lithium-ion battery conductive bonding agent and production method thereof, lithium-ion battery electrode plate and production method thereof, and lithium-ion battery
    23.
    发明授权
    Lithium-ion battery conductive bonding agent and production method thereof, lithium-ion battery electrode plate and production method thereof, and lithium-ion battery 有权

    公开(公告)号：US11024873B2

    公开(公告)日：2021-06-01

    申请号：US16189432

    申请日：2018-11-13

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Zhiyong Wang ,  Shengan Xia ,  Pinghua Wang

    IPC: H01M10/0525 ,  H01M4/62 ,  H01M4/13 ,  H01M4/139

    Abstract: A lithium-ion battery conductive bonding agent, including graphene and a first bonding agent grafted on a surface of the graphene, a production method for the conductive bonding agent, and an electrode plate and a lithium-ion battery that contain the conductive bonding agent, where the first bonding agent includes at least one of polyvinyl alcohol, sodium carboxymethyl cellulose, polyethylene glycol, polylactic acid, polymethyl methacrylate, polystyrene, polyvinylidene fluoride, a hexafluoropropylene polymer, styrene-butadiene rubber, sodium alginate, starch, cyclodextrin, or polysaccharide. The lithium-ion battery conductive bonding agent has good conductive performance and bonding performance and specific strength, improving mechanical strength of a whole electrode plate. The conductive bonding agent integrates a bonding agent and a conductive agent. This can improve content of active substance in the electrode plate, and further increase an energy density of an electrochemical cell.

    Intelligent wireless charging control method, device, and system
    24.
    发明授权
    Intelligent wireless charging control method, device, and system 有权

    公开(公告)号：US11018518B2

    公开(公告)日：2021-05-25

    申请号：US16016231

    申请日：2018-06-22

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Pinghua Wang ,  Kangmin Huang ,  Weidong Tang

    IPC: H02J7/02 ,  H02J50/80 ,  H02J7/00

    Abstract: A method for intelligently controlling a wireless charging receiving device, where the method includes obtaining at least one of a first environment parameter, a first status parameter, or a first historical record of a wireless charging receiving device, setting a wireless charging requirement according to at least one of the first environment parameter, the first status parameter, or the first historical record, transmitting the wireless charging requirement to a wireless charging transmission device, receiving an energy signal, generating a wireless charging stop instruction according to the wireless charging requirement or a user instruction, and sending the wireless charging stop instruction to the wireless charging transmission device. Therefore, intelligent control over a wireless charging process is implemented, a personalized requirement of a user is satisfied, and user experience is improved.

    Fast Charging Method and System, Terminal, and Charger
    25.
    发明申请
    Fast Charging Method and System, Terminal, and Charger 审中-公开

    公开(公告)号：US20200343756A1

    公开(公告)日：2020-10-29

    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

    IPC: H02J7/00 ,  G01R31/36 ,  H01M10/42

    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.

    Energy management method for a device with a rechargeable battery
    26.
    发明授权
    Energy management method for a device with a rechargeable battery 有权

    公开(公告)号：US10554066B2

    公开(公告)日：2020-02-04

    申请号：US15662949

    申请日：2017-07-28

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Kangmin Huang ,  Pinghua Wang ,  Maosheng Huang

    IPC: H01M10/44 ,  H01M10/46 ,  H02J7/00 ,  H02J50/80

    Abstract: The present invention discloses an energy management method for a device including a rechargeable-battery. The energy management method includes: obtaining, by the device including a rechargeable-battery, information that is related to energy availability; analyzing, by the device including a rechargeable-battery according to the information that is related to energy availability, the energy availability of the device including a rechargeable-battery, and determining, according to an analysis result, an energy availability level of the device including a rechargeable-battery; generating, by the device including a rechargeable-battery, an energy management policy according to the energy availability level; and executing, by the device including a rechargeable-battery, the energy management policy. The present invention further discloses a device including a rechargeable-battery. In the foregoing manners, the present invention can effectively improve a battery endurance capability and improve user experience.

    Charging Circuit, Terminal, and Charging System
    28.
    发明申请
    Charging Circuit, Terminal, and Charging System 审中-公开

    公开(公告)号：US20190222041A1

    公开(公告)日：2019-07-18

    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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