Lithium ion secondary battery
US8741460B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2011 |
| Grant date | Jun 3, 2014 |
| Priority date | — |
| Expiry date | Oct 31, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lithium ion secondary battery includes a flat-shaped electrode wound body. Positive and negative terminals are connected respectively to the body and placed to partially protrude from a battery lid. Assuming that the body length in a winding axial direction is W, the body size in a direction perpendicular to the axial direction and parallel to the flat surfaces is H, and a distance between a farthest position in a connecting range of one of the terminals, in which the terminal is connected to an uncoated portion, from the lid and the body edge located on the lid side is X, the values W, H, and X are determined so that a point defined in a plane (X/H, H/W) by values (X/H) and (H/W) is located in a triangle defined by joining three points, (0.50, 0.70), (0.32, 0.40), and (0.70, 0.40) in the same plane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.