TRIGGER CELL FOR TRIGGERING THERMAL RUNAWAY IN BATTERIES

• Main Authors: Doak, William J, Stewart, Joshua P, Boecke, Matthew S, Arbogast, Robert J, Yale, JR., Thomas E, Arnold, Peter J, Johnson, Jay R, Ganoung, Jamie-Lynn
• Format: Patent
• Language: English
• Published: 19.09.2024
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

A system for testing thermal runaway in a battery cell includes a first layer of first dielectric material at least in part wrapped around the battery cell, and a wire at least in part wrapped around the first layer of first dielectric material. The system further includes a second layer of second dielectric material at least in part wrapped around the wire, and a power source configured to supply power to the wire. In an example, the first layer of first dielectric material includes a polyimide film, and the second layer of second dielectric material includes mica. The system further includes a temperature sensor in contact with the first layer, the second layer, and/or the battery cell. A controller is to receive a temperature reading from the temperature sensor, and control a power supplied by the power source to the wire, based at least in part on the temperature reading.