公开(公告)号：US20230344020A1

公开(公告)日：2023-10-26

申请号：US18345458

申请日：2023-06-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shengan Xia ,  Pinghua Wang ,  Dan Lei ,  Junfeng Yang

IPC: H01M10/42 ,  H01M4/80 ,  H01M4/66 ,  H01M4/62 ,  H01M10/052 ,  H01M4/139

CPC classification number: H01M10/4235 ,  H01M4/80 ,  H01M4/667 ,  H01M4/628 ,  H01M4/661 ,  H01M10/052 ,  H01M4/139 ,  H01M2004/027

Abstract: A negative electrode current collector of a lithium metal battery includes a current collector substrate provided with a plurality of pore channels, a lithium dissolving agent filled in each of the pore channels of the current collector substrate, and a locking layer attached to a pore wall of a corresponding pore channel and located between the pore wall and the lithium dissolving agent. The lithium dissolving agent is a liquid or a gel capable of dissolving lithium metal. The locking layer is configured to constrain the lithium dissolving agent to the corresponding pore channel.

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

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.

公开(公告)号：US10826305B2

公开(公告)日：2020-11-03

申请号：US16351517

申请日：2019-03-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yingtao Li ,  Kui Zhou ,  Qiang Wang ,  Guanghui Zhang ,  Pinghua Wang

IPC: H02J7/00 ,  H02J7/02

Abstract: A fast charging method for a parallel battery pack is provided, including: obtaining a maximum charging current allowed by a charging trunk and a charging current required for charging a parallel battery pack; comparing the charging current required for charging the parallel battery pack with the maximum charging current allowed by the charging trunk; if the charging current required for charging the parallel battery pack is less than or equal to the maximum charging current allowed by the charging trunk, performing parallel charging on battery units; or if the charging current required for charging the parallel battery pack is greater than the maximum charging current allowed by the charging trunk, changing some or all of battery units in the parallel battery pack to a series connection, and performing series charging on the battery units. The fast charging method for a parallel battery pack can effectively shorten a charging time.

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.

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

IPC: H02J7/00 ,  H01M10/46 ,  H01M10/42 ,  H02J7/34

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：US20200028150A1

公开(公告)日：2020-01-23

申请号：US16586268

申请日：2019-09-27

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Shengan Xia ,  Jun Yang ,  Pinghua Wang

IPC: H01M4/04 ,  H01M4/62 ,  H01M4/587 ,  H01M4/134 ,  H01M4/38 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/1395 ,  H01M4/36 ,  H01M4/583

Abstract: Embodiments of the present disclosure provide a cathode active material for a lithium-ion secondary battery, where the cathode active material for a lithium-ion secondary battery includes a silicon-based active substance and a nitrogen-doped carbon material. The silicon-based active substance is encased in the interior of the nitrogen-doped carbon material, and the silicon-based active substance is one or more of a nanoparticle and a nanowire; a micropore is arranged on at least one of the exterior and the interior of the nitrogen-doped carbon material; and a material of the nitrogen-doped carbon material is a nitrogen-doped carbon network. The cathode active material for a lithium-ion secondary battery solves a problem in the prior art that a silicon material, when used as a cathode active material, easily falls from a current collector due to a great volume change and has a low conductivity.

公开(公告)号：US20180301925A1

公开(公告)日：2018-10-18

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

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.

公开(公告)号：US20170214264A1

公开(公告)日：2017-07-27

申请号：US15483069

申请日：2017-04-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Pinghua Wang ,  Kangmin Huang

IPC: H02J7/00 ,  H01M10/42 ,  H01M10/44

CPC classification number: H02J7/0047 ,  H01M10/425 ,  H01M10/44 ,  H01M10/48 ,  H01M10/486 ,  H01M10/488 ,  H01M2220/30 ,  H02J7/041 ,  H02J2007/005 ,  Y02B40/90

Abstract: Embodiments of the present invention provide a charging method and a rechargeable device. The charging method includes determining an effective current interval of a rechargeable device, and performing matching between the effective current interval and a charging duration interval. The method also includes determining target charging duration in the charging duration interval, determining a target charging current in the effective current interval according to the target charging duration; and performing charging by using the target charging current.

公开(公告)号：US20170070069A1

公开(公告)日：2017-03-09

申请号：US15356237

申请日：2016-11-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yingtao Li ,  Kangmin Huang ,  Pinghua Wang

IPC: H02J7/00

CPC classification number: H02J7/0044 ,  H02J3/14 ,  H02J3/32 ,  H02J7/0021 ,  H02J7/007 ,  H02J9/061

Abstract: An electric energy dispatch method and apparatus, and a power management method and apparatus are disclosed. The method includes: determining, by an electric energy dispatch apparatus, a first time period and a second time period and sending, by the electric energy dispatch apparatus, first indication information to a base station. The first indication information is used to control an energy storage battery of the base station to store electric energy from a power grid connected to the base station within the first time period. The method further includes sending, by the electric energy dispatch apparatus, second indication information to the base station. The second indication information is used to control the energy storage battery of the base station to perform electric energy compensation for the power grid connected to the base station within the second time period.

Abstract translation: 公开了一种电能调度方法和装置，以及电力管理方法和装置。 该方法包括：通过电能调度装置确定第一时间段和第二时间段，并且由电能调度装置向基站发送第一指示信息。 第一指示信息用于控制基站的能量蓄电池，以在第一时间段内存储来自连接到基站的电网的电能。 该方法还包括通过电能调度装置向基站发送第二指示信息。 第二指示信息用于控制基站的能量蓄电池，以在第二时间段内对连接到基站的电网进行电能补偿。