Secondary battery, and battery module, battery pack and apparatus comprising the same
US12355076B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 27, 2021 |
| Grant date | Jul 8, 2025 |
| Priority date | — |
| Expiry date | Apr 16, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The embodiments of this application provide a secondary battery, and a battery module, a battery pack and an apparatus including the same. Specifically, this application provides a secondary battery, which includes a negative electrode plate. The negative electrode plate includes a negative electrode current collector and a negative electrode film disposed on at least one surface of the negative electrode current collector. The negative electrode film includes a negative electrode active material, a conductive agent, and a binder. The negative electrode active material includes SiOx (0<x<2) and graphite. An average particle diameter Dv50 of the negative electrode active material is from 8 μm to 14 μm. The conductive agent includes carbon nanotubes whose aspect ratio is greater than or equal to 2500:1. The secondary battery can have both good rate performance and cycle performance under the premise of a relatively high energy density.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.