公开(公告)号：US20230032873A1

公开(公告)日：2023-02-02

申请号：US17788684

申请日：2020-11-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lun LU ,  Lie YANG ,  Jiahua LIANG ,  Fan XU ,  Xiaofeng ZHOU

IPC: H01M10/0587 ,  H01M50/538 ,  H01M50/547

Abstract: The battery provided in this application and having at least two ports is obtained by winding a first electrode and a second electrode that have a novel structure (for example, a plurality of tabs separately protrude from a first long side and a second long side of an electrode, and the tabs are disposed on a non-edge area). In addition, in the terminal device including the battery, the battery and another charging/discharging component may form at least two charging/discharging links, so that the terminal device can have a stronger fast charging capability, and heat dissipation pressure of each charging/discharging link can be relieved. Moreover, stress inside the battery is evenly distributed, so that interface deterioration of the electrode that is caused by stress unevenness can be alleviated. This effectively reduces a risk of shading and lithium plating generated in a cathode charging/discharging cycle, and improves performance of the battery.

公开(公告)号：US20180301699A1

公开(公告)日：2018-10-18

申请号：US16010947

申请日：2018-06-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jiahua LIANG ,  Shengan XIA ,  Fengchao XIE

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

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.