Safety device for lithium-ion-polymer battery
US6175213A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 18, 2000 |
| Grant date | Jan 16, 2001 |
| Priority date | — |
| Expiry date | Feb 18, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A battery is comprised of a rigid, plastic housing defining a generally rectangular interior cavity, and an essentially flat interior surface. A battery rechargeable electric cell has a flexible outer packaging, an electrically conductive thermoset adhesive film, and is contained within the cavity. The cell is generally rectangular in shape and has a flat outer surface and two leads extending through the housing. The cell has a normal configuration when experiencing normal operating conditions, and an abnormal configuration when experiencing abnormal operating conditions. A membrane switch is disposed between the flat interior surface of the housing and the flat outer surface of the cell. The switch has at least one lead extending through the housing. The switch has a first electrical condition when the cell has the normal configuration and a second electrical condition when the cell has the abnormal configuration. The membrane switch is selected to have a predetermined operating pressure related to the battery size and shape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.