公开(公告)号：US20240421301A1

公开(公告)日：2024-12-19

申请号：US18815187

申请日：2024-08-26

Applicant: BYD COMPANY LIMITED

Inventor： Xin WEN ,  Qingqing GAO ,  Sanzhi CHEN ,  Rong HAO

IPC: H01M4/58 ,  H01M4/02 ,  H01M4/36 ,  H01M4/62 ,  H01M10/0525

Abstract: A lithium iron phosphate positive electrode active material includes a first lithium iron phosphate material that meets: 0.49

公开(公告)号：US20240421300A1

公开(公告)日：2024-12-19

申请号：US18815154

申请日：2024-08-26

Applicant: BYD COMPANY LIMITED

Inventor： Xin WEN ,  Qingqing GAO ,  Sanzhi CHEN ,  Rong HAO

IPC: H01M4/58 ,  H01M4/02 ,  H01M4/62 ,  H01M4/66 ,  H01M4/74 ,  H01M10/0525

Abstract: A lithium iron phosphate positive electrode active material includes a first lithium iron phosphate material and a second lithium iron phosphate material. D1mo is a first particle size of first particles that have a largest volume distribution value of the first lithium iron phosphate material, and 0.3≤D1mo≤3.2. D2mo is a second particle size of second particles that have a largest volume distribution value of the second lithium iron phosphate material, 1≤D2mo≤5, and D1mo

公开(公告)号：US20240405217A1

公开(公告)日：2024-12-05

申请号：US18802786

申请日：2024-08-13

Applicant: BYD COMPANY LIMITED

Inventor： Jiamin LIU ,  Sanzhi CHEN ,  Qingqing GAO ,  Rong HAO

IPC: H01M4/58 ,  C01B25/45 ,  H01M4/02 ,  H01M4/136 ,  H01M4/36 ,  H01M4/62 ,  H01M10/0525

Abstract: A lithium iron phosphate positive electrode active material includes: a first lithium iron phosphate material having a particle size of D1v50 μm in a range of 0.3-0.95 at 50% cumulative volume distribution of the first lithium iron phosphate material, and a second lithium iron phosphate material having a particle size of D2v50 μm in a range of 1.0-3.5 at 50% cumulative volume distribution of the second lithium iron phosphate material. Particle sizes of the lithium iron phosphate positive electrode active material are respectively Dv90 μm, Dv10 μm, and Dv50 μm at 90%, 10%, and 50% cumulative volume distribution of the lithium iron phosphate positive electrode active material, a particle size of the lithium iron phosphate positive electrode active material is Dn50 μm at 50% cumulative number distribution of the lithium iron phosphate positive electrode active material, and 0.16 ≤ D v ⁢ 90 - D v ⁢ 10 D v ⁢ 50 + D v ⁢ 50 × D n ⁢ 50 ≤ 31.1 .