公开(公告)号：US20240145760A1

公开(公告)日：2024-05-02

申请号：US18398471

申请日：2023-12-28

申请人： BYD COMPANY LIMITED

发明人： Yi PAN ,  Yongjun MA ,  Zizhu GUO ,  Liangjun WANG ,  Huajun SUN

IPC分类号： H01M10/052 ,  H01M4/02 ,  H01M4/04 ,  H01M4/38 ,  H01M10/0569 ,  H01M10/058 ,  H01M10/44 ,  H01M50/249

CPC分类号： H01M10/052 ,  H01M4/0416 ,  H01M4/0435 ,  H01M4/382 ,  H01M4/386 ,  H01M10/0569 ,  H01M10/058 ,  H01M10/44 ,  H01M50/249 ,  H01M2004/027 ,  H01M2220/20

摘要： A lithium battery includes a positive electrode plate, a negative electrode plate, a separator located between the positive electrode plate and the negative electrode plate, and an electrolyte solution. The negative electrode material layer of the negative electrode plate includes a lithium-silicon composite negative electrode active material. The negative electrode material layer has a protective layer on the surface or the lithium-silicon composite negative electrode active material has a protective layer on the surface. The protective layer includes a polymer matrix and a lithium salt. When the lithium battery is fully charged, the lithium-silicon composite negative electrode active material includes elemental lithium and a lithium-silicon alloy Li4.4Si, and the elemental lithium accounts for 15%-95% by mole of the lithium-silicon composite negative electrode active material.

公开(公告)号：US20210296637A1

公开(公告)日：2021-09-23

申请号：US16321593

申请日：2017-07-25

申请人： BYD COMPANY LIMITED

发明人： Jing XIE ,  Zizhu GUO ,  Yongjun MA ,  Guangui YI ,  Wei SONG ,  Biao LI

IPC分类号： H01M4/36 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/1395 ,  H01M10/0525 ,  H01M4/134 ,  H01M4/02

摘要： The present disclosure provides a negative electrode material and a preparation method thereof, a negative electrode and an all-solid-state lithium-ion battery. The negative electrode material includes a negative electrode active substance and a coating layer on the surface of the negative electrode active substance, the coating layer including a polymer electrolyte and a sulfide solid electrolyte.

公开(公告)号：US20240109436A1

公开(公告)日：2024-04-04

申请号：US18535746

申请日：2023-12-11

申请人： BYD COMPANY LIMITED

发明人： Ke ZHANG ,  Congji E ,  Zizhu GUO ,  Yi PAN ,  Zhipei LU

IPC分类号： B60L50/64 ,  B60L58/18

CPC分类号： B60L50/64 ,  B60L58/18 ,  H01M2010/4271

摘要： A battery pack and a vehicle are provided. The battery pack is configured to provide electric energy required by the vehicle under different operating conditions. The battery pack includes a task manager, a first battery unit and a second battery unit. The first battery unit and the second battery unit respectively respond to a different operating state of a load and provide the electric energy required under the control of the task manager.

公开(公告)号：US20160359193A1

公开(公告)日：2016-12-08

申请号：US15242228

申请日：2016-08-19

申请人： BYD COMPANY LIMITED

发明人： Guangui YI ,  Yongjun MA ,  Zizhu GUO

IPC分类号： H01M10/0562 ,  C01B35/14 ,  C01B25/45 ,  H01M10/0525 ,  B28B3/00

CPC分类号： H01M10/0562 ,  B28B3/00 ,  C01B25/45 ,  C01B35/143 ,  C04B35/447 ,  C04B35/62805 ,  C04B35/62886 ,  C04B2235/3203 ,  C04B2235/3217 ,  C04B2235/3225 ,  C04B2235/3227 ,  C04B2235/3241 ,  C04B2235/3244 ,  C04B2235/3286 ,  C04B2235/3409 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/5454 ,  C04B2235/602 ,  C04B2235/6562 ,  H01M10/0525 ,  H01M2300/0068 ,  H01M2300/0094 ,  Y02T10/7011

摘要： A solid electrolyte contains an internal component and an external component coated on a surface of the internal component. The internal component is represented by a formula Li1+xMxZr2−x(PO4)3, M is one or more elements selected from a group consisting of Al, La, Cr, Ga, Y, and In, and 0.05≦x≦0.4. The external component contains a plastic deformable material and has a conductivity of about 10−7 S/cm to about 10−5S/cm. A method of preparing the solid electrolyte and a lithium ion battery including the solid electrolyte are also provided.

摘要翻译： 固体电解质包含内部组分和涂覆在内部组件的表面上的外部组分。 内部成分由式Li1 + xMxZr2-x（PO4）3表示，M是选自Al，La，Cr，Ga，Y和In中的一种或多种元素，0.05≤x≤0.4。 外部组件包含塑料可变形材料，并且具有约10-7S / cm至约10-5S / cm的导电率。 还提供了制备固体电解质的方法和包括固体电解质的锂离子电池。

公开(公告)号：US20240128537A1

公开(公告)日：2024-04-18

申请号：US18532313

申请日：2023-12-07

申请人： BYD COMPANY LIMITED

发明人： Ke ZHANG ,  Na CHEN ,  Jiannian LI ,  Yi PAN ,  Zizhu GUO

IPC分类号： H01M10/63 ,  H01M10/615 ,  H01M10/625 ,  H01M10/659 ,  H02J7/00

CPC分类号： H01M10/63 ,  H01M10/615 ,  H01M10/625 ,  H01M10/659 ,  H02J7/0047 ,  H01M2220/20

摘要： A self-heating control method and a self-heating control system for a rechargeable battery are disclosed. The rechargeable battery includes a battery core. A separator is provided between a positive electrode and a negative electrode of the battery core. A reference electrode is correspondingly provided at the separator. A surface electrode is correspondingly provided on the negative electrode surface of the battery core. The method includes: detecting the potential difference between the reference electrode and the surface electrode, generating a charging current adjustment instruction according to the potential difference between the reference electrode and the surface electrode, and adjusting the charging current of the rechargeable battery according to the charging current adjustment instruction during the self-heating process of the rechargeable battery.

公开(公告)号：US20240105962A1

公开(公告)日：2024-03-28

申请号：US18521727

申请日：2023-11-28

申请人： BYD COMPANY LIMITED

发明人： Yi PAN ,  Jing XIE ,  Zizhu GUO ,  Huajun SUN

IPC分类号： H01M4/66 ,  H01M4/74 ,  H01M10/052 ,  H01M10/658

CPC分类号： H01M4/667 ,  H01M4/666 ,  H01M4/742 ,  H01M10/052 ,  H01M10/658 ,  H01M2004/027

摘要： A current collector includes: a first polymer layer; a metal layer, the metal layer being disposed on a side of the first polymer layer; and a second polymer layer, the second polymer layer being disposed on a side of the metal layer far away from the first polymer layer; and in a direction from the first polymer layer to the second polymer layer, the current collector having a number of through-holes that penetrate the current collector.

公开(公告)号：US20230324956A1

公开(公告)日：2023-10-12

申请号：US18334871

申请日：2023-06-14

申请人： BYD COMPANY LIMITED

发明人： Feng WANG ,  Liangliang HUANG ,  Jingguo WANG ,  Zizhu GUO ,  Yudong LEI

IPC分类号： G06F1/16

CPC分类号： G06F1/1635

摘要： An electronic device includes a housing, a functional assembly, and a battery. An accommodating space is formed in the housing. The functional assembly includes a functional component, where the functional assembly is mounted in the housing and occupies a part of the accommodating space. The battery includes a main body portion and a protruding portion and an avoidance portion formed on the main body portion, the main body portion and the protruding portion occupy at least a part of the remaining space of the accommodating space, and the avoidance portion is arranged corresponding to the functional component and is configured to avoid the functional component.

公开(公告)号：US20240351477A1

公开(公告)日：2024-10-24

申请号：US18759652

申请日：2024-06-28

申请人： BYD COMPANY LIMITED

发明人： Ke ZHANG ,  Jiannian LI ,  Rongfang WU ,  Zizhu GUO ,  Yi PAN

IPC分类号： B60L58/27 ,  B60L15/02 ,  B60L58/18 ,  H02J7/00

CPC分类号： B60L58/27 ,  B60L15/02 ,  B60L58/18 ,  H02J7/0013

摘要： A heating circuit of a power battery is provided. The power battery includes a first battery core group and a second battery core group connected in series. The heating circuit includes an inverter, an alternating current motor, and a first controller. A neutral point of the alternating current motor is connected to a first connection point between the first battery core group and the second battery core group. The first controller is configured to input a driving signal to control the inverter to alternately connect the first battery core group to the alternating current motor and the second battery core group to the alternating current motor, to cause the first battery core group and the second battery core group to charge each other.

公开(公告)号：US20240097142A1

公开(公告)日：2024-03-21

申请号：US18523574

申请日：2023-11-29

申请人： BYD COMPANY LIMITED

发明人： Yiwei HU ,  Zizhu GUO ,  Yi PAN ,  Jianchang ZHANG ,  Huajun SUN

IPC分类号： H01M4/75 ,  H01M4/66 ,  H01M4/74

CPC分类号： H01M4/75 ,  H01M4/661 ,  H01M4/74

摘要： A dry battery electrode plate includes: a metal current collector and a self-supporting electrode film. The metal current collector is provided with pores. The self-supporting electrode film includes a first electrode film and a second electrode film. The first electrode film is arranged on one side of the metal current collector. The second electrode film is arranged on the other side of the metal current collector facing away from the first electrode film. The first electrode film and the second electrode film are configured to be press-fit connected by an external force. The first electrode film and the second electrode film are attached to the metal current collector. The first electrode film and the second electrode film are connected to each other at positions corresponding to the pores.

公开(公告)号：US20230420663A1

公开(公告)日：2023-12-28

申请号：US18463954

申请日：2023-09-08

申请人： BYD COMPANY LIMITED

发明人： Biao LI ,  Zizhu GUO ,  Tong ZHANG ,  Zhuo SHI

IPC分类号： H01M4/36 ,  C22C24/00 ,  B22F1/08 ,  B22F1/18 ,  B22F9/00 ,  B22F9/04 ,  H01M4/134 ,  H01M4/38 ,  H01M10/0562 ,  H01M10/052

CPC分类号： H01M4/366 ,  C22C24/00 ,  B22F1/08 ,  B22F1/18 ,  B22F9/002 ,  B22F9/04 ,  H01M4/134 ,  H01M4/382 ,  H01M4/386 ,  H01M10/0562 ,  H01M10/052 ,  B22F2301/054 ,  B22F2009/043 ,  H01M2004/027

摘要： The present disclosure provides a negative electrode material, a preparation method thereof, and an all-solid-state lithium battery. The negative electrode material includes a core and an amorphous lithium-silicon alloy layer cladding the core. The core includes a glassy solid electrolyte and amorphous lithium-silicon alloy particles dispersed in the glassy solid electrolyte. The material of the amorphous lithium-silicon alloy particles is LixSi, 0