Electrode sheet for Li-ion battery and Li-ion battery including the same
US10249870B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2017 |
| Grant date | Apr 2, 2019 |
| Priority date | — |
| Expiry date | Jul 3, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present application relates to an electrode sheet for Li-ion battery and a Li-ion battery including the same. The Li-ion battery includes a current collector and a diaphragm layer coated on the current collector, the current collector includes a coating region and at least one electrode tab region, the coating region is a region of the current collector coated with the diaphragm layer; the coating region is adjoined with the electrode tab region, a stress releasing region is provided at adjoining position of the coating region and at least one electrode tab region. The stress releasing region provided by the present application can reduce stress received by the diaphragm during rolling and stretching processes, which can avoid cracking of electrode tab and electrode sheet, and can improve battery cycling performance and, at the same time, can also be fused in short circuit, thereby improving safety performance of the battery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.