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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11646417 B1

PDFFull Text
Date of Patent:
May. 09, 2023

Filed:

Jul. 16, 2022

Negative electrode sheet and method for preparing the same, secondary battery, battery module, battery pack, and device

Applicant:

Contemporary Amperex Technology Co., Limited, Ningde, CN;

Inventors:

Zijian Lv, Ningde, CN;

Jiazheng Wang, Ningde, CN;

Assignee:

CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED, Ningde, CN;

Attorney:

Anova Law Group, PLLC

Primary Examiner:

Jonathan Crepeau

Assistant Examiner:

Angela J Martin

Int. Cl.
CPC ...
H01M 4/583 (2010.01); H01M 4/04 (2006.01); H01M 4/38 (2006.01); H01M 4/62 (2006.01); H01M 10/0525 (2010.01); H01M 4/36 (2006.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/583 (2013.01); H01M 4/0404 (2013.01); H01M 4/366 (2013.01); H01M 4/386 (2013.01); H01M 4/625 (2013.01); H01M 10/0525 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01);
Abstract

A negative electrode sheet includes a current collector, and a first active material layer and a second active material layer that are sequentially provided on at least one surface of the current collector. The first active material layer includes a first negative electrode active material. Particle sizes of the first negative electrode active material satisfy: 0.02≤A=(Dn10)/(Dv50)≤0.2. The second active material layer includes a second negative electrode active material. Particle sizes of the second negative electrode active material satisfy: 0.02≤A=(Dn10)/(Dv50)≤0.3; and Aand Asatisfy 1<A/A<2.5.

Find Patent Forward Citations

Lv, Zijian. (2023). Negative electrode sheet and method for preparing the same, secondary battery, battery module, battery pack, and device (U.S. Patent No. 11646417). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11646417

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