Power storage device packaging material, method for producing the same, and power storage device
US12300826B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 2020 |
| Grant date | May 13, 2025 |
| Priority date | — |
| Expiry date | Apr 4, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power storage device packaging material including a heat-sealable resin layer containing polypropylene and polyethylene, in which whitening and a decrease in the insulation properties due to molding are prevented. A laminate with at least a base material layer, a barrier layer, and a heat-sealable resin layer in this order from an outer side toward an inner side, wherein the heat-sealable resin layer contains polypropylene and polyethylene; a cross section of the heat-sealable resin layer in a thickness direction parallel to TD, a sea-island structure is observed in a cross-sectional image obtained with scanning electron microscope; the cross-sectional image is such that when the total thickness of a layer positioned closer to inner side than the barrier layer is taken as 100%, the cross-sectional image is obtained within a range of thicknesses of up to 12.5% from a surface opposite to the barrier layer side of the heat-sealable resin layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.