公开(公告)号：US20240186524A1

公开(公告)日：2024-06-06

申请号：US18262722

申请日：2021-12-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhixian Li ,  Fan Xu

IPC: H01M4/62 ,  H01M4/02 ,  H01M4/133 ,  H01M4/134 ,  H01M4/38 ,  H01M4/587 ,  H01M10/0525

CPC classification number: H01M4/628 ,  H01M4/133 ,  H01M4/134 ,  H01M4/386 ,  H01M4/587 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/027

Abstract: A negative electrode plate of a lithium-ion battery, a lithium-ion battery, and an electronic device are provided. The negative electrode plate of the lithium-ion battery includes a negative electrode current collector and an additional layer. The additional layer is disposed on a surface of the negative electrode current collector. The additional layer includes a negative electrode active substance, a protective substance, and a bonding agent. The negative electrode active substance includes at least one of a carbon material, an alloyed material, and a silicon material, the protective substance includes a nanometal oxide and a conductive agent, and the protective substance further includes lithium titanate or carbon-coated lithium titanate. When the lithium-ion battery is damaged, the protective substance can reduce a risk of thermal runaway caused by a short circuit between a positive electrode current collector of a positive electrode plate and the negative electrode active substance.

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：US20240063478A1

公开(公告)日：2024-02-22

申请号：US18252713

申请日：2021-11-09

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhixian Li ,  Fan Xu

IPC: H01M50/128 ,  H01M10/0525

CPC classification number: H01M50/128 ,  H01M10/0525

Abstract: A battery packaging film includes a metal layer, a first bonding enhancement layer, a first bonding layer, a second bonding layer, a first protective layer, and a second protective layer. The first bonding enhancement layer is located on a first surface of the metal layer. The first bonding layer is located on a surface of the first bonding enhancement layer away from the metal layer. Because the first bonding enhancement layer is added to an upper surface of the metal layer, roughness of the upper surface of the metal layer is increased to enhance strength of bonding between the first protective layer and the metal layer and minimize occurrence of unintended separation of the first protective layer from the metal layer, thereby enhancing safety of the battery packaging.