公开(公告)号：US20230223547A1

公开(公告)日：2023-07-13

申请号：US18174795

申请日：2023-02-27

Applicant: BYD COMPANY LIMITED

Inventor： Riguo MEI ,  Xiaoya CHANG ,  Zhengjiao LIU ,  Ziwen WU ,  Yi PAN

IPC: H01M4/62 ,  H01M4/134 ,  H01M10/0525

CPC classification number: H01M4/628 ,  H01M4/134 ,  H01M10/0525

Abstract: Provided are an electrode plate and a lithium-ion battery, the electrode plate includes a current collector layer, a semiconductor layer and an alkali metal replenishing layer. The semiconductor layer is disposed on at least one surface of the current collector layer. The alkali metal replenishing layer is a lithium-replenishing agent layer or a sodium-replenishing agent layer. The alkali metal replenishing layer is arranged on a side of the semiconductor layer far away from the current collector layer.

公开(公告)号：US20230307614A1

公开(公告)日：2023-09-28

申请号：US18205175

申请日：2023-06-02

Applicant: BYD COMPANY LIMITED

Inventor： Riguo MEI ,  Zhengjiao LIU ,  Xiaoya CHANG ,  Ziwen WU ,  Yi PAN

IPC: H01M4/36 ,  H01M10/0525 ,  H01M10/42 ,  H01M4/40 ,  H01M10/0585

CPC classification number: H01M4/366 ,  H01M10/0525 ,  H01M10/4235 ,  H01M4/405 ,  H01M10/0585 ,  H01M2220/20 ,  H01M2004/021

Abstract: A lithium-ion battery includes a cell including N battery unit, and at least one negative electrode lithium replenishing agent film that includes an independent lithium replenishing electrode including a current collector and a first metal lithium layer disposed on the current collector, or includes a second metal lithium layer laminated on a surface of a negative electrode material layer. An areal density σ of the metal lithium layer and a parameter θ satisfy certain relationships. Each of the N battery units includes a positive electrode plate, a negative electrode plate, and a separator sandwiched between the positive electrode plate and the negative electrode plate. The positive electrode plate comprises a positive electrode current collector and a positive electrode material layer disposed on the positive electrode current collector. The negative electrode plate includes a negative electrode current collector and a negative electrode material layer disposed on the negative electrode current collector.