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

IPC: H02J7/00 ,  G01R31/36

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.

公开(公告)号：US11545703B2

公开(公告)日：2023-01-03

申请号：US16205418

申请日：2018-11-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Dawei Huo ,  Jie Ding ,  Pinghua Wang ,  Hui Li ,  Jinbo Ma

IPC: H02J7/00 ,  H01M10/44 ,  G06N20/00

Abstract: The present disclosure provides a charging method and a terminal. The method includes: automatically learning, by the terminal, historical data by using a machine learning algorithm, to establish a habit model of a user, and matching a current time with the usage habit model of the user to determine a current charging intention of the user, so as to determine a charging mode according to the charging intention. By means of the technical solutions, a charging requirement of a user can be effectively identified, and on-demand charging can be implemented. This improves user experience while avoiding a battery life decrease caused by frequent fast charging.

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

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

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：US20220140326A1

公开(公告)日：2022-05-05

申请号：US17574193

申请日：2022-01-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Qiang Ma ,  Haobin Wu ,  Zhengjie Li ,  Yifei Xu ,  Xiang Hong ,  Pinghua Wang

IPC: H01M4/40 ,  H01M4/62 ,  H01M4/04 ,  H01M10/0569

Abstract: Disclosed is a metal anode, including a metal anode body (10) and a protective layer (11) formed on one or two side surfaces of the metal anode body (10). The protective layer (11) includes a coordination polymer having an unsaturated metal site or a complexation product formed by complexation between the coordination polymer having the unsaturated metal site and anions of battery electrolyte salt. The coordination polymer uses zirconium, aluminum, or iron as a center and uses R—Xn as an organic ligand, R is n-valent hydrocarbyl, substituted hydrocarbyl, or hydrocarboxy, n is an integer in a range of 1 to 4, X is an oxygen-containing functional group capable of forming metal-oxygen chemical bond with the metal anode body (10), and the metal-oxygen chemical bond is formed between metal atoms on a surface of the metal anode body (10) and oxygen atoms in the X group.anodeanode.

公开(公告)号：US20210175497A1

公开(公告)日：2021-06-10

申请号：US17179794

申请日：2021-02-19

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Hang Su ,  Pinghua Wang ,  Yangxing Li

IPC: H01M4/36 ,  H01M10/0525 ,  H01M10/0562 ,  H01M4/38 ,  H01M4/48 ,  H01M4/62

Abstract: A silicon-based composite anode material for a battery includes a silicon-based material core and a coating layer coated on a surface of the silicon-based material core. The coating layer includes a first coating layer disposed on the surface of the silicon-based material core and a second coating layer disposed on a surface of the first coating layer. The first coating layer includes a two-dimensional quinone-aldehyde covalent organic framework material, and the second coating layer includes a material with high ionic conductivity. The second coating layer is relatively rigid, and can maintain structural stability of the entire material during silicon expansion and contraction, and effectively alleviates volume expansion.

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

IPC: H02J50/10 ,  H02J50/90 ,  H02J50/80 ,  H02J50/40

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.

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

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：US20190081350A1

公开(公告)日：2019-03-14

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

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.

公开(公告)号：US20150104697A1

公开(公告)日：2015-04-16

申请号：US14580030

申请日：2014-12-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shengan Xia ,  Jun Yang ,  Pinghua Wang

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

CPC classification number: H01M4/0471 ,  H01M4/0416 ,  H01M4/0428 ,  H01M4/133 ,  H01M4/134 ,  H01M4/1393 ,  H01M4/1395 ,  H01M4/364 ,  H01M4/386 ,  H01M4/583 ,  H01M4/587 ,  H01M4/625

Abstract: Embodiments of the present invention 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.

Abstract translation: 本发明的实施方式提供一种锂离子二次电池用正极活性物质，其中锂离子二次电池用正极活性物质包含硅系活性物质和氮掺杂碳材料。 硅基活性物质被包裹在氮掺杂碳材料的内部，硅基活性物质是纳米颗粒和纳米线中的一种或多种; 在氮掺杂碳材料的外部和内部的至少一个上布置微孔; 并且氮掺杂碳材料的材料是氮掺杂碳网络。 用于锂离子二次电池的正极活性材料解决了现有技术中的问题，当硅材料用作阴极活性材料时，由于体积变化大而容易从集电体落下并具有低导电性。

公开(公告)号：US12166218B2

公开(公告)日：2024-12-10

申请号：US16717111

申请日：2019-12-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Liang Fan ,  Wei Zhou ,  Yangxing Li ,  Pinghua Wang ,  Yong Cao

IPC: H01M50/136 ,  H01M50/105 ,  H01M50/117 ,  H01M50/119 ,  H01M50/121 ,  H01M50/129 ,  H01M50/14 ,  H01M50/178 ,  H01M50/184 ,  H01M50/557

Abstract: One example of a flexible battery includes an electrochemical cell layer and a wrapping layer that wraps the electrochemical cell layer. The flexible battery further includes an energy absorbing layer. The energy absorbing layer is located between the wrapping layer and upper and lower surfaces, which are opposite to each other, of the electrochemical cell layer. The energy absorbing layer includes a plurality of supporting parts that protrude outward from the upper or lower surface of the electrochemical cell layer. The plurality of supporting parts are mainly made of a foam material or rubber. For the energy absorbing layer, a lower-modulus buffering layer or an empty part may be further disposed between the electrochemical cell layer and the wrapping layer, to complement a wavy surface of the supporting part to form a flat surface, so as to meet diversified requirements of a wearable device.