| Patent application number | Description | Published |
|---|
| 20100075221 | Cell thermal runaway propagation resistance using an internal layer of intumescent material - A means for inhibiting the propagation of thermal runaway within a plurality of batteries is provided, wherein the means is comprised of at least one layer of intumescent material interposed between the interior surface of the casing of a battery and the corresponding electrode assembly. | 03-25-2010 |
| 20100086844 | Cell Thermal Runaway Propagation Resistance Using Dual Intumescent Material Layers - A means for inhibiting the propagation of thermal runaway within a plurality of batteries is provided, wherein the means is comprised of a pair of intumescent material layers coating the battery casing, or at least a portion thereof. | 04-08-2010 |
| 20100136385 | Method and apparatus for maintaining cell wall integrity during thermal runaway using an outer layer of intumescent material - A method and apparatus is provided in which a layer of an intumescent material surrounds the casing of a battery, the layer helping to prevent the formation of perforations in the battery casing during a thermal runaway event and, if a perforation is formed, inhibiting the flow of hot, pressurized gas from within the battery. A sleeve, surrounding the cell, may be used to contain the intumescent material during the thermal event. | 06-03-2010 |
| 20100136391 | Active Thermal Runaway Mitigation System for Use Within a Battery Pack - An active thermal runaway mitigation system is provided that mitigates the effects of a single cell undergoing thermal runaway, thereby preventing the propagation of the thermal runaway event to neighboring cells within the battery pack. The provided system includes at least one, fluid-containing conduit in proximity to the cells within the battery pack. The conduit includes a plurality of breach points in proximity to the subset of cells, where each breach point is configured to form a breach at a preset temperature that is lower than the melting temperature of the conduit. Once a breach is formed, the fluid contained within the conduit is discharged through the breach. | 06-03-2010 |
| 20100273034 | Battery pack enclosure with controlled thermal runaway release system - A battery pack thermal management system is provided that is comprised of at least one enclosure failure port integrated into at least one wall of a battery pack enclosure, where the enclosure failure port(s) remains closed during normal operation of the battery pack, and opens during a battery pack thermal runaway event, thereby providing a flow path for hot gas generated during the thermal runaway event to be exhausted out of the battery pack enclosure in a controlled fashion. | 10-28-2010 |
| 20110014506 | Method and Apparatus for Maintaining Cell Wall Integrity Using a High Yield Strength Outer Sleeve - A method and apparatus is provided in which a pre-formed sleeve or pre-formed secondary can comprised of one or more layers of a high yield strength material is positioned around the pre-formed battery case, the pre-formed sleeve/secondary can inhibiting the flow of hot, pressurized gas from within the battery through perforations formed in the battery casing during a thermal runaway event. | 01-20-2011 |
| 20110014514 | Cell with an Outer Layer of Intumescent Material - A battery assembly is provided that includes a layer of intumescent material that coats the sidewall and bottom surface of the cell casing, excluding at least one case contact region. | 01-20-2011 |
| 20120013341 | Method and Apparatus for Electrically Cycling a Battery Cell to Simulate an Internal Short - A test apparatus and corresponding method for simulating an internal cell short and initiating thermal runaway in a battery cell is disclosed whereby the cell is internally heated through rapid charge and discharge cycles at high currents. The magnitude of the selected current may be modulated to simulate a cell short with the desired power profile without unrealistically heating neighboring cells or interfering with the thermal environment of the cell within the module. | 01-19-2012 |
