公开(公告)号：US20250132461A1

公开(公告)日：2025-04-24

申请号：US18832353

申请日：2022-12-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Dongfang Yang ,  Zhixian Li ,  Zemeng Sun ,  Fengchao Xie

IPC: H01M50/457 ,  H01M50/423 ,  H01M50/451 ,  H01M50/491

Abstract: A composite separator includes a base separator and a film covering a surface of the base separator, where the film is a porous film. The film includes a first material region, a second material region, and a third material region, and the second material region and the third material region are respectively disposed on two sides of the first material region, and both are connected to the first material region. A material of the first material region includes a polymer. Both a material of the second material region and a material of the third material region include inorganic particles, where a mass percentage of the inorganic particles in the second material region is 90% or more, and/or a mass percentage of the inorganic particles in the third material region is 90% or more.

公开(公告)号：US12170365B2

公开(公告)日：2024-12-17

申请号：US18147618

申请日：2022-12-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jiahua Liang ,  Shengan Xia ,  Fengchao Xie

IPC: H01M4/36 ,  C01B32/05 ,  C01B32/21 ,  H01M4/02 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/587 ,  H01M10/0525

Abstract: A lithium-ion rechargeable battery negative electrode active material and a preparation method thereof, a lithium-ion rechargeable battery negative electrode plate, and a lithium-ion rechargeable battery are disclosed. The negative electrode active material includes a carbon core and a coating layer formed on a surface of the carbon core, a material of the coating layer includes amorphous carbon and a doping element, and the doping element includes element nitrogen. The lithium-ion rechargeable battery negative electrode active material has the carbon core, and the coating layer that includes the doping element and the amorphous carbon is provided on the surface of the carbon core.

公开(公告)号：US20230197939A1

公开(公告)日：2023-06-22

申请号：US18147618

申请日：2022-12-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jiahua Liang ,  Shengan Xia ,  Fengchao Xie

IPC: H01M4/36 ,  H01M4/133 ,  H01M4/587 ,  H01M10/0525 ,  H01M4/1393 ,  C01B32/05 ,  C01B32/21

CPC classification number: H01M4/366 ,  H01M4/133 ,  H01M4/587 ,  H01M10/0525 ,  H01M4/1393 ,  C01B32/05 ,  C01B32/21 ,  C01P2002/02 ,  C01P2002/54 ,  C01P2004/84 ,  C01P2006/40 ,  H01M2004/027

Abstract: A lithium-ion rechargeable battery negative electrode active material and a preparation method thereof, a lithium-ion rechargeable battery negative electrode plate, and a lithium-ion rechargeable battery are disclosed. The negative electrode active material includes a carbon core and a coating layer formed on a surface of the carbon core, a material of the coating layer includes amorphous carbon and a doping element, and the doping element includes element nitrogen. The lithium-ion rechargeable battery negative electrode active material has the carbon core, and the coating layer that includes the doping element and the amorphous carbon is provided on the surface of the carbon core.

公开(公告)号：US20230170475A1

公开(公告)日：2023-06-01

申请号：US18147609

申请日：2022-12-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jiahua Liang ,  Shengan Xia ,  Fengchao Xie

IPC: H01M4/36 ,  H01M4/133 ,  H01M4/587 ,  H01M10/0525 ,  H01M4/1393 ,  C01B32/05 ,  C01B32/21

CPC classification number: H01M4/366 ,  H01M4/133 ,  H01M4/587 ,  H01M10/0525 ,  H01M4/1393 ,  C01B32/05 ,  C01B32/21 ,  C01P2002/02 ,  C01P2002/54 ,  C01P2004/84 ,  C01P2006/40 ,  H01M2004/027

Abstract: A lithium-ion rechargeable battery negative electrode active material and a preparation method thereof, a lithium-ion rechargeable battery negative electrode plate, and a lithium-ion rechargeable battery are disclosed. The negative electrode active material includes a carbon core and a coating layer formed on a surface of the carbon core, a material of the coating layer includes amorphous carbon and a doping element, and the doping element includes element nitrogen. The lithium-ion rechargeable battery negative electrode active material has the carbon core, and the coating layer that includes the doping element and the amorphous carbon is provided on the surface of the carbon core.

公开(公告)号：US20220123396A1

公开(公告)日：2022-04-21

申请号：US17424653

申请日：2019-12-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lun Lu ,  Da Hong ,  Jiahua Liang ,  Fan Xu ,  Fengchao Xie

IPC: H01M50/186 ,  H02J7/00 ,  H01M50/103 ,  H01M10/42

Abstract: A battery includes an unpackaged cell and a packaging film, where an edge of the unpackaged cell includes at least one first open space. The first open space runs through a thickness direction of the unpackaged cell. No unpackaged cell exists in the first open space. The packaging film encloses an enclosed space that accommodates the unpackaged cell. The packaging film forms a first sealing part in the first open space. The first sealing part does not cover the unpackaged cell. The first sealing part encloses a second open space with a packaging film on a sidewall of the first open space. The first open space partly overlaps the second open space.

公开(公告)号：US10862167B2

公开(公告)日：2020-12-08

申请号：US16171983

申请日：2018-10-26

Applicant: Huawei Technologies Co., Ltd. ,  DONGGUAN AISIPU ENERGY TECHNOLOGY CO., LTD.

Inventor： Guocheng Xu ,  Fengchao Xie ,  Rui Xu ,  Hui Li

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/42

Abstract: The present application provides a high-temperature lithium-ion battery electrolyte, including a lithium salt, an organic solvent, and a water removal additive. A structural formula of the water removal additive is shown as a formula (1): where R1 is a —NCH—(CH2)n—CN group, and 0