Laser ablation for manufacture of battery cells
US10586974B2 · kind B2 · utility
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27Claims
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Key dates
| Filing date | Sep 15, 2017 |
| Grant date | Mar 10, 2020 |
| Priority date | — |
| Expiry date | Feb 23, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A pulsed laser can be used to ablate the desired thin film layers at a desired location, to a desired depth, without impinging significantly upon other layers. The battery cell layer order may be optionally optimized to aid in ease of laser ablation. The laser process can isolate layers of thin film within sufficient proximity to at least one edge of the final thin film battery stack to optimize active battery area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.