公开(公告)号：EP4258390A1

公开(公告)日：2023-10-11

申请号：EP21913384.0

申请日：2021-10-26

申请人： Huawei Technologies Co., Ltd.

发明人： XIA, Shengan ,  WANG, Pinghua ,  LEI, Dan ,  YANG, Junfeng

IPC分类号： H01M4/70 ,  H01M4/80 ,  H01M10/052

摘要： This application provides a negative electrode current collector of a lithium metal battery. The negative electrode current collector includes: a current collector substrate provided with a plurality of pore channels, a lithium dissolving agent filled in the pore channel of the current collector substrate, and a locking layer attached to a pore wall of the pore channel and located between the pore wall of the pore channel 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 pore channel of the current collector substrate. This application further provides the lithium metal battery using the negative electrode current collector and a preparation method for the negative electrode current collector. The negative electrode current collector locks lithium ions in the pore channels of the current collector substrate and stores them in the form of a liquid or a gel, which can not only reduce volume expansion caused by lithium deposition, but can also reduce the generation of lithium dendrites, thereby greatly improving safety of the battery.

公开(公告)号：EP3454448A1

公开(公告)日：2019-03-13

申请号：EP16903492.3

申请日：2016-06-01

申请人： Huawei Technologies Co., Ltd.

发明人： HUO, Dawei ,  DING, Jie ,  WANG, Pinghua ,  LI, Hui ,  MA, Jinbo

IPC分类号： H02J7/04

摘要： The present invention provides a charging method and a terminal. The method includes: the terminal can automatically learn historical data by using a machine learning algorithm, to establish a habit model of a user, and match 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：EP3444876A1

公开(公告)日：2019-02-20

申请号：EP17781784.8

申请日：2017-03-23

申请人： Huawei Technologies Co., Ltd.

发明人： XIA, Shengan ,  LI, Hui ,  WANG, Pinghua

IPC分类号： H01M4/36 ,  H01M4/38 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/134

摘要： This application provides a silicon negative material, a silicon negative material preparation method, a negative electrode plate, and a lithium-ion battery. The silicon negative material includes a silicon core, and a buffer coating layer and a first coating layer that are coated on a surface of the silicon core, where the first coating layer is a coating layer including a carbon material, and the carbon material includes at least one of the following doping elements: N, P, B, S, O, F, Cl, or H. In embodiments of this application, fast charging performance of the silicon negative material when being used as a negative electrode of a battery is improved.

公开(公告)号：EP3079189A1

公开(公告)日：2016-10-12

申请号：EP14876837.7

申请日：2014-07-15

申请人： Huawei Technologies Co., Ltd.

发明人： WANG, Pinghua

IPC分类号： H01M4/60 ,  H01M4/137 ,  H01M10/052 ,  C01B31/04

CPC分类号： H01M4/60 ,  C01B32/194 ,  C07C225/28 ,  H01M2/162 ,  H01M2/1653 ,  H01M2/1686 ,  H01M4/0404 ,  H01M4/0433 ,  H01M4/0471 ,  H01M4/133 ,  H01M4/137 ,  H01M4/1393 ,  H01M4/1399 ,  H01M4/587 ,  H01M4/623 ,  H01M4/625 ,  H01M4/661 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0585 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2220/30

摘要： The present invention provides a quinone compound-graphene composite material, including quinone compound and graphene, where the quinone compound is chemically bonded on the surface of the graphene, and the quinone compound is quinone compound monomer or quinone polymer. The quinone compound-graphene composite material has high energy density, high flexibility, high conductivity, and high stability, and can be used as cathode material for preparing flexible electrode. Embodiments of the present invention further provide preparation method of quinone compound-graphene composite material, and flexible lithium secondary battery using the quinone compound-graphene composite material as cathode active material.

摘要翻译： 本发明提供了一种醌化合物 - 石墨烯复合材料，其包括醌化合物和石墨烯，其中醌化合物化学键合在石墨烯的表面上，醌化合物是醌化合物单体或醌类聚合物。 醌化合物 - 石墨烯复合材料具有高能量密度，高柔韧性，高导电性和高稳定性，可用作制备柔性电极的阴极材料。 本发明的实施方案还提供了醌化合物 - 石墨烯复合材料的制备方法和使用醌化合物 - 石墨烯复合材料作为阴极活性材料的柔性锂二次电池。

公开(公告)号：EP3506451A1

公开(公告)日：2019-07-03

申请号：EP17850067.4

申请日：2017-06-22

申请人： Huawei Technologies Co., Ltd.

发明人： LI, Yingtao ,  ZHOU, Kui ,  ZHANG, Guanghui ,  WANG, Pinghua

IPC分类号： H02J7/00

摘要： Embodiments of the present invention provide a fast charging method for a series battery pack, including: obtaining charge parameters of battery units in a series battery pack; determining, based on the charge parameters, whether there is a differentiated battery unit in the series battery pack, where the differentiated battery unit is a battery unit whose charge parameter is different from a charge parameter of the rest battery units in the series battery pack; and if there is a differentiated battery unit in the series battery pack, changing the battery units in the series battery pack to a parallel connection, and performing parallel charging on the battery units. In addition, the embodiments of the present invention further provide a fast charging system and fast charging apparatus for a series battery pack. The fast charging method for a series battery pack can effectively shorten a charging time.

公开(公告)号：EP3435511A1

公开(公告)日：2019-01-30

申请号：EP17778601.9

申请日：2017-03-24

申请人： Huawei Technologies Co., Ltd.

发明人： LIU, Xujun ,  LIU, Ce ,  LIU, Yanding ,  MA, Jinbo ,  WANG, Pinghua

IPC分类号： H02J7/00

摘要： The present invention provides a fast charging method and system, a terminal, and a charger. The method includes: sending, by a terminal, instruction information to a charger connected to the terminal, so as to instruct the charger to adjust an output voltage and an output current; and 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, so that a charging circuit between two sides of the 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 unit with a fixed conversion ratio in the terminal and is a constant value, and K is any real number greater than 1. The terminal can be fast charged by implementing the fast charging method provided in the present invention.

公开(公告)号：EP3197004A1

公开(公告)日：2017-07-26

申请号：EP15849367.6

申请日：2015-04-23

申请人： Huawei Technologies Co. Ltd.

发明人： WANG, Pinghua ,  HUANG, Kangmin

IPC分类号： H02J7/00

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

摘要： 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; performing matching between the effective current interval and a charging duration interval; 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. In the embodiments of the present invention, target charging duration that is input by a user and falls within a charging duration interval is received, and then a target charging current is determined, so as to perform charging by using the target charging current. The target charging duration falls within the charging duration interval; therefore, the target charging current also matches the target charging duration, thereby improving accuracy of charging time and improving charging efficiency.

摘要翻译： 本发明的实施例提供了一种充电方法和可充电装置。 该充电方法包括：确定可充电设备的有效电流间隔; 执行有效当前间隔和充电持续时间间隔之间的匹配; 确定充电持续时间间隔中的目标充电持续时间 根据目标充电持续时间确定有效电流区间内的目标充电电流; 并通过使用目标充电电流来执行充电。 在本发明实施例中，接收用户输入并落入充电时间间隔内的目标充电持续时间，然后确定目标充电电流，以利用目标充电电流进行充电。 目标充电持续时间落在充电持续时间间隔内; 因此目标充电电流也与目标充电持续时间相匹配，从而提高了充电时间的准确性，提高了充电效率。

公开(公告)号：EP4235865A3

公开(公告)日：2023-11-29

申请号：EP23161454.6

申请日：2019-05-29

申请人： Huawei Technologies Co., Ltd.

发明人： SU, Hang ,  WANG, Pinghua ,  LI, Yangxing

IPC分类号： H01M4/36 ,  H01M4/38 ,  H01M4/48 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/054 ,  H01G11/06 ,  H01G11/50 ,  H01M4/02

摘要： Embodiments of the present invention provide a silicon-based composite anode material, including a silicon-based material core and a coating layer coated on a surface of the silicon-based material core, where 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 fast ion conductor material. With super toughness and an ordered pore structure, the first coating layer can effectively absorb mechanical stress generated by expansion of the silicon-based material core and ensure integrity of the coating layer, and has high electrical conductivity and ionic conductivity, thereby effectively enhancing effects of electron conduction and ion conduction of the coating layer. The second coating layer is relatively rigid, can maintain structural stability of the entire material during silicon expansion and contraction, and effectively alleviates volume expansion. The embodiments of the present invention further provide a method for preparing the silicon-based composite anode material and an energy storage device that includes the silicon-based composite anode material.

公开(公告)号：EP4277081A2

公开(公告)日：2023-11-15

申请号：EP23178828.2

申请日：2017-07-14

申请人： Huawei Technologies Co., Ltd.

发明人： LIU, Xinyu ,  WANG, Pinghua ,  LIU, Ce ,  LIU, Yanding ,  MA, Jinbo

IPC分类号： H02J7/34

摘要： Technical solutions of the present invention provide a battery, a terminal, and a charging system. The 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, 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. The battery provided in the present invention has both a charging path and a discharging path. Therefore, large-current charging may be performed on the battery without causing severe heating of the overcurrent protection element. Further, current overload detection may be further performed during discharging.

公开(公告)号：EP3993100A1

公开(公告)日：2022-05-04

申请号：EP20839898.2

申请日：2020-07-10

申请人： Huawei Technologies Co., Ltd.

发明人： MA, Qiang ,  WU, Haobin ,  LI, Zhengjie ,  XU, Yifei ,  HONG, Xiang ,  WANG, Pinghua

IPC分类号： H01M4/134

摘要： 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-X n 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. The protective layer (11) on the surface of the metal anode can effectively inhibit dendrite growth, reduce occurrences of side reactions, and alleviate impact caused by volume expansion of the metal anode in a cycle process. A method for preparing a metal anode and a secondary battery are further provided.