公开(公告)号：US09893379B2

公开(公告)日：2018-02-13

申请号：US15242228

申请日：2016-08-19

Applicant: BYD COMPANY LIMITED

Inventor： Guangui Yi ,  Yongjun Ma ,  Zizhu Guo

IPC: H01M10/0562 ,  H01M10/0525 ,  C01B35/14 ,  C01B25/45 ,  B26B3/00 ,  C04B35/447 ,  C04B35/628 ,  B28B3/00

CPC classification number: H01M10/0562 ,  B28B3/00 ,  C01B25/45 ,  C01B35/143 ,  C04B35/447 ,  C04B35/62805 ,  C04B35/62886 ,  C04B2235/3203 ,  C04B2235/3217 ,  C04B2235/3225 ,  C04B2235/3227 ,  C04B2235/3241 ,  C04B2235/3244 ,  C04B2235/3286 ,  C04B2235/3409 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/5454 ,  C04B2235/602 ,  C04B2235/6562 ,  H01M10/0525 ,  H01M2300/0068 ,  H01M2300/0094 ,  Y02T10/7011

Abstract: A solid electrolyte contains an internal component and an external component coated on a surface of the internal component. The internal component is represented by a formula Li1+xMxZr2−x(PO4)3, M is one or more elements selected from a group consisting of Al, La, Cr, Ga, Y, and In, and 0.05≦x≦0.4. The external component contains a plastic deformable material and has a conductivity of about 10−7 S/cm to about 10−5S/cm. A method of preparing the solid electrolyte and a lithium ion battery including the solid electrolyte are also provided.

公开(公告)号：US20250062328A1

公开(公告)日：2025-02-20

申请号：US18938777

申请日：2024-11-06

Applicant: BYD COMPANY LIMITED

Inventor： Zizhu Guo ,  Xiaoyan Han ,  Yongjun Ma ,  Yi Pan ,  Huajun Sun

IPC: H01M4/38 ,  H01M4/02 ,  H01M4/583 ,  H01M4/62 ,  H01M10/0525

Abstract: A negative electrode sheet, a secondary battery, and an electrical device are provided. The negative electrode sheet includes a negative current collector and a negative electrode active material layer. The negative electrode active material layer is disposed on a surface of the negative current collector. The negative electrode active material layer includes a negative electrode active material and an additive having compression and rebound properties. After a pressure X is applied in a thickness direction of the negative electrode sheet, a rebound rate of the negative electrode sheet is 2%-40%, and a compression rate of the negative electrode sheet is 2%-40%. The pressure X satisfies the following: 0.3 Mpa≤X≤5 Mpa.

公开(公告)号：US20180123167A1

公开(公告)日：2018-05-03

申请号：US15852336

申请日：2017-12-22

Applicant: BYD COMPANY LIMITED

Inventor： GUANGUI YI ,  Yongjun Ma ,  Zizhu Guo ,  Xianghui Wang ,  Jing Xie

IPC: H01M10/0562 ,  H01M10/0525 ,  H01M10/02

CPC classification number: H01M10/0562 ,  C01B25/45 ,  H01M2/145 ,  H01M2/1646 ,  H01M10/02 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/058 ,  H01M2300/0071 ,  H01M2300/0091 ,  H01M2300/0094 ,  Y02T10/7011

Abstract: A solid electrolyte contains an internal component and an external component coated on a surface of the internal component. The internal component is represented by a formula Li1+xMxTi2−x(PO4)3, M is one or more elements selected from a group consisting of Al, La, Cr, Ga, Y, and In, and 0.05≤x≤0.4. The external component has an ionic conductivity of no less than 10−6 S/cm, an electrochemical window of the solid electrolyte is no less than 5V. A method of preparing the solid electrolyte and a lithium ion battery including the solid electrolyte are also provided.