United States of America As Represented by the Administrator of Nasa

Other

Science Applications International Corporation

Gary A Bayles

Steven L Rickman

John J Darst

William Q Walker

Bruce Lee Drolen

Eric C Dimpault-Darcy

Charles R Longabaugh

Natalie N Anderson

Peter J Hughes

Christiaan Khurana

Ryan P Brown

Damien T Calderon

Zoran Bilc

David Petrushenko

Richard A Hagen

A system for measuring a heat response of a battery cell includes a cell chamber configured to receive the battery cell therein. The cell chamber is configured to trigger a battery cell into a thermal runaway event while in the cell chamber, which causes the battery cell to eject an electrode winding, particles, and gas. The system also includes an ejecta bore muffler configured to receive the electrode winding, the particles, and the gas. The system also includes an ejecta basket configured to be positioned at least partially within the ejecta bore muffler. The ejecta basket is configured to capture the electrode winding while allowing at least a portion of the particles, the gas, or both to pass therethrough. The system also includes a gas collection system configured to receive at least a portion of the gas that passes through the ejecta basket.

Large format-fractional thermal runaway calorimeter

A system for measuring a heat response of a cell during a thermal runaway event includes a housing. An insulation is positioned within the housing. A calorimeter is positioned within the insulation and the housing. The calorimeter is configured to have the cell positioned therein. The calorimeter is configured to measure a temperature increase of the cell, one or more components of the calorimeter, or a combination thereof during the thermal runaway event of the cell. A total energy yield of the thermal runaway event is configured to be determined based at least partially upon the temperature increase. A ratio is configured to be determined based at least partially upon the temperature increase. The ratio includes energy released through a casing of the cell during the thermal runaway event vs. energy released through ejecta material from the cell during the thermal runaway event.

Systems and methods for measuring a heat response of a battery cell in thermal runaway

A battery assembly may include bus strips located on one or more sides and displaced ends of battery cells. The battery assembly may comprise a heater. The battery assembly may comprise one or more refractory panels. A refractory panel may comprise weakened regions corresponding to battery cells.

Battery assembly

An illuminating writing instrument for providing an illuminated writing surface and a method for its manufacture. The illuminating writing instrument includes a housing that defines an enclosure that holds the components of the illuminating instrument. The housing has an end that supports a writing point and an end that supports an upper portion having a transparent window portion that allows light to pass therethrough. The housing also encloses an electrical circuit that includes a power source, a switch, and a light source such that when the switch is activated, the light source produces illumination. The upper portion of the housing also includes a reflector that reflects light from the light source through the transparent window portion to illuminate a writing surface. The illuminating writing instrument can also include at least one optic fiber that extends from an area adjacent the light source, along a portion of the length of the housing, and to a location adjacent the writing point to illuminate a writing surface. The illuminating writing instrument can also include a replaceable writing means, a replaceable power source, and a replaceable light source. The illuminating writing instrument can also include a rechargeable power source and a device to afford recharging to the rechargeable power source.

Illuminating writing instrument

Growing community of inventors

Crane, IN, United States of America

Gary A Bayles