公开(公告)号：US20240154121A1

公开(公告)日：2024-05-09

申请号：US18404634

申请日：2024-01-04

Applicant: BYD COMPANY LIMITED

Inventor： Xiaotao YUAN ,  Zhan XU ,  Xuanwei WU ,  Tao YE ,  Kefeng HE

IPC: H01M4/62 ,  H01M4/04 ,  H01M4/131 ,  H01M4/1391

CPC classification number: H01M4/62 ,  H01M4/043 ,  H01M4/0471 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/623 ,  H01M4/625

Abstract: A lithium-ion battery electrode includes a current collector and n electrode plate layers laminated on the current collector, n being an integer greater than or equal to 2. The electrode plate layer contains a pore-forming agent. A content of the pore-forming agent in the electrode plate layers gradually increases along a direction gradually away from the current collector. The pore-forming agent is selected from an electrolyte solution additive which is solid at normal temperature.

公开(公告)号：US20240290970A1

公开(公告)日：2024-08-29

申请号：US18399468

申请日：2023-12-28

Applicant: BYD COMPANY LIMITED

Inventor： Xiaotao YUAN ,  Zhan XU ,  Peixing CHEN ,  Xuanwei WU ,  Kefeng HE

IPC: H01M4/58 ,  H01M4/02 ,  H01M4/1397

CPC classification number: H01M4/5825 ,  H01M4/1397 ,  H01M2004/021 ,  H01M2004/027 ,  H01M2004/028

Abstract: An electrode includes n electrode plate layers sequentially stacked. The electrode plate layer close to a membrane side of the battery is the 1st layer, and the electrode plate layer close to a current collector side is the nth layer. N is a natural number greater than or equal to 2. An electrode material of the electrode plate layer at the 1st layer includes first particles, and an electrode material of the electrode plate layer at each layer from the 2nd layer to the nth layer includes at least the first particles and second particles. An average particle size of the first particles is greater than an average particle size of the second particles. Porosity of the electrode plate layers gradually increases layer by layer in a direction from the nth layer to the 1st layer.