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公开(公告)号：US20240429400A1
公开(公告)日：2024-12-26
申请号：US18823106
申请日：2024-09-03
Applicant: BYD COMPANY LIMITED
Inventor： Liping GE , Rong HAO , Minghao ZHUANG , Bizhe SU , Zhan XU
Abstract: An electrode plate includes an electrode active material layer. The electrode active material layer includes a three-dimensional conductive network base, and an electrode active material and a binder that are loaded on the three-dimensional conductive network base. The three-dimensional conductive network base and the electrode active material satisfy a relational expression below: d × 6 D 2 × ( m ρ / π D 3 6 ) ≤ V ≤ ( D 3 - π D 3 6 ) × ( m ρ / π D 3 6 ) where V is an actual volume of the three-dimensional conductive network base, whose unit is cm3; m is mass of the electrode active material, whose unit is g; D is a D50 particle size of the electrode active material, whose unit is μm; ρ is true density of the electrode active material, whose unit is g/cm3; and d is a thickness of a single layer carbon atoms with a value of d is 0.334 nm.
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公开(公告)号：US20240413339A1
公开(公告)日：2024-12-12
申请号：US18396949
申请日：2023-12-27
Applicant: BYD COMPANY LIMITED
Inventor： Xiaotao YUAN , Zhan XU , Chunxiao BAO , Liping GE , Kefeng HE
Abstract: A positive electrode includes a current collector layer and an active component layer. The active component layer covers at least one surface of the current collector layer. The active component layer includes an active material and a conductive component. The conductive component includes at least one of a one-dimensional conductive material, a zero-dimensional conductive material, and a two-dimensional conductive material.
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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.
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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.
