Layered pressure homogenizing soft medium for li-ion rechargeable batteries
US11522212B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 22, 2019 |
| Grant date | Dec 6, 2022 |
| Priority date | — |
| Expiry date | Jan 31, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A battery cell having a layered pressure homogenizing soft medium for liquid/solid state Li-ion rechargeable batteries. The battery cell of the present technology includes one or more battery pouches, a pressure mechanism external to the battery pouches that applies a pressure to the battery pouches, and a layered pressure homogenizing soft medium that is displaced between the battery pouches and the pressure mechanism. By using a number of pressure homogenizing medium layers, each with a specific range of thickness and within a range of physical properties, the battery pouches displaced between the pressure homogenizing medium layers are evenly pressurized by the mediums due to pressure applied by the pressure mechanism to within a desired range of pressure. The pressure applied to the battery pouches by the pressure homogenizing medium is monitored by a pressure sensor, such as a two-dimensional pressure sensor. If the pressure to the battery pouches is not within a desired pressure range, a controller can control the pressure mechanism to adjust the pressure to the mediums and battery pouches to bring the pressure within the desired range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.