Patent · US Active

Negative electrode plate, secondary battery, battery module, battery pack, and apparatus

US11664495B2 · kind B2 · utility

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19Claims

0Family size

Assignee

CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED · CN

Inventors

Jianjun Ma · Jiaocheng District, CN
Libing He · Jiaocheng District, CN

Key dates

Filing date	Oct 14, 2019
Grant date	May 30, 2023
Priority date	—
Expiry date	Nov 26, 2040

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

This application provides a negative electrode plate, a secondary battery, a battery module, a battery pack, and an apparatus. The negative electrode plate includes a negative current collector and a plurality of active substance layers on the negative current collector. The plurality of active substance layers include at least a first active substance layer and a second active substance layer. The first active substance layer includes a first negative active substance, and the second active substance layer includes a second negative active substance. A ratio of gram capacity of the negative active substance of the first active substance layer to thickness of the first active substance layer is 3.5-10.0. A ratio of gram capacity of the negative active substance of the second active substance layer to thickness of the second active substance layer is 6.5-23.0.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.