公开(公告)号：US20230238513A1

公开(公告)日：2023-07-27

申请号：US18121909

申请日：2023-03-15

Applicant: BYD COMPANY LIMITED

Inventor： Na CHEN ,  Minghao ZHUANG ,  Rong HAO ,  Yi PAN

IPC: H01M4/36 ,  H01M4/525 ,  H01M4/505 ,  H01M4/131 ,  C01B25/45

CPC classification number: H01M4/364 ,  H01M4/525 ,  H01M4/505 ,  H01M4/131 ,  C01B25/45 ,  H01M2004/021

Abstract: A positive electrode material includes a first lithium manganese iron phosphate material in an aggregate form, a second and third lithium manganese iron phosphate materials in an aggregate and/or single-crystal-like form, and a fourth and fifth lithium manganese iron phosphate materials in a single-crystal-like form. D505

公开(公告)号：US20240429363A1

公开(公告)日：2024-12-26

申请号：US18830153

申请日：2024-09-10

Applicant: BYD COMPANY LIMITED

Inventor： Bizhe SU ,  Rong HAO ,  Minghao ZHUANG ,  Liping GE ,  Yecheng TIAN

IPC: H01M4/13 ,  H01M4/02 ,  H01M4/62 ,  H01M10/052 ,  H01M10/0567 ,  H01M10/0569

Abstract: A battery includes a positive electrode plate, a negative electrode plate, an electrolyte solution, and a separator between the positive electrode plate and the negative electrode plate. The positive electrode plate includes a positive current collector and a positive material layer disposed on the positive current collector. The negative electrode plate includes a negative current collector and a negative material layer disposed on the negative current collector. The positive electrode plate and the negative electrode plate are configured to have a strong liquid retention capability for the electrolyte solution that can reduce the occurrence of lithium plating during charging.

公开(公告)号：US20240186490A1

公开(公告)日：2024-06-06

申请号：US18394462

申请日：2023-12-22

Applicant: BYD COMPANY LIMITED

Inventor： Bin CHENG ,  Yi PAN ,  Minghao ZHUANG ,  Yuzhen YE ,  Ruoyi DENG

IPC: H01M4/36 ,  C01B25/45 ,  H01M4/58 ,  H01M4/587

CPC classification number: H01M4/366 ,  C01B25/45 ,  H01M4/5825 ,  H01M4/587 ,  C01P2004/86 ,  C01P2006/40

Abstract: A battery positive electrode material includes a core and a first shell layer arranged on a surface of the core. The core includes LiMnxFe1-xPO4. The first shell layer includes LiMnyFe1-yPO4, where 0

公开(公告)号：US20250023023A1

公开(公告)日：2025-01-16

申请号：US18894094

申请日：2024-09-24

Applicant: BYD COMPANY LIMITED

Inventor： Liping GE ,  Rong HAO ,  Minghao ZHUANG ,  Yecheng TIAN ,  Bizhe SU

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/505 ,  H01M4/525 ,  H01M4/583 ,  H01M10/052

Abstract: An electrode, a lithium battery, and a motor vehicle are provided. The electrode includes a current collector and an electrode active material layer arranged on at least one side surface of the current collector. The electrode active material layer includes at least two electrode active material sub-layers. The electrode active material sub-layers meet: n×δi≤10000, n≥2, and δi≤5000; and Hi-1

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

IPC: H01M4/70 ,  H01M4/02 ,  H01M4/04 ,  H01M4/505 ,  H01M4/525 ,  H01M4/583 ,  H01M10/052

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.

公开(公告)号：US20240145715A1

公开(公告)日：2024-05-02

申请号：US18404671

申请日：2024-01-04

Applicant: BYD COMPANY LIMITED

Inventor： Bin CHENG ,  Yi PAN ,  Minghao ZHUANG ,  Ruoyi DENG ,  Pengyu WU

IPC: H01M4/62 ,  H01M4/131 ,  H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M10/42

CPC classification number: H01M4/62 ,  H01M4/131 ,  H01M4/364 ,  H01M4/505 ,  H01M4/525 ,  H01M10/4235 ,  H01M2004/028

Abstract: A battery positive electrode material including lithium ferromanganese phosphate particles and active particles dispersed in voids between the lithium ferromanganese phosphate particles. The active particles include one or more of lithium nickel cobalt manganate particles, lithium nickel cobalt aluminate particles, lithium-rich manganese-based material particles, lithium cobaltate particles, spinel lithium manganate LiMn2O4 particles and layered lithium manganate LiMnO2 particles. The ratio of the median particle diameter of lithium ferromanganese phosphate to that of the active particles is between 3 and 8. In the battery positive electrode material, the content of percentage by weight of the lithium ferromanganese phosphate is between 70% and 90%, and the content of percentage by weight of the active particles is between 10% and 30%.

公开(公告)号：US20230223534A1

公开(公告)日：2023-07-13

申请号：US18122538

申请日：2023-03-16

Applicant: BYD COMPANY LIMITED

Inventor： Na CHEN ,  Minghao ZHUANG ,  Rong HAO ,  Yi PAN

IPC: H01M4/58 ,  H01M4/36 ,  H01M4/136 ,  C01B25/45

CPC classification number: H01M4/5825 ,  H01M4/364 ,  H01M4/136 ,  C01B25/45 ,  H01M2004/028

Abstract: A positive electrode material includes a first lithium manganese iron phosphate material in an aggregate form, a second and third lithium manganese iron phosphate materials in an aggregate and/or single-crystal-like form, and a fourth and fifth lithium manganese iron phosphate materials in a single-crystal-like form. A particle quantity ratio of the first to fifth lithium manganese iron phosphate materials is (0.8 to 1.2):(0.8 to 1.2):(1.6 to 2.4):(6.4 to 9.6):(6.4 to 9.6), and particle size D50 relationships satisfy: D505