Detection of thermal runaway using sensors

A sensor array with permanent and intermittent sensors using pulse width modulation addresses thermal runaway detection in energy storage systems, ensuring efficient and safe operation by reducing energy consumption and enabling proactive mitigation.

DE102025101028A1Pending Publication Date: 2026-05-28GM GLOBAL TECHNOLOGY OPERATIONS LLC
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Patent Information

Application Number
DE102025101028
Authority / Receiving Office
DE · DE
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-11-24
Filing Date
2025-01-14
Publication Date
2026-05-28

AI Technical Summary

Technical Problem

Existing rechargeable energy storage systems face challenges in detecting thermal runaway conditions efficiently, leading to potential safety hazards due to the high demand for battery electronics and the need for proactive mitigation measures.

Method used

Implementing a sensor array with both permanent and intermittent sensors connected to nodes in the energy storage device, utilizing pulse width modulation to selectively activate intermittent sensors, and a controller to evaluate readings for thermal runaway conditions, enabling early detection and mitigation.

Benefits of technology

The system effectively detects thermal runaway conditions through continuous and intermittent sensor readings, reducing energy consumption and enhancing safety by allowing for timely mitigation measures such as cooling or discharge.

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Abstract

Vehicles, systems, and methods for using a sensor array to evaluate an energy storage device are provided. One method comprises arranging persistent and intermittent sensor units at nodes in the energy storage device, wherein the persistent and intermittent sensor units are electrically connected to be powered by respective nodes of the energy storage device; powering the persistent sensor units with the energy storage device; receiving persistent sensor readings from the persistent sensor units with a controller; selectively activating at least two of the intermittent sensor units while at least one of the intermittent sensor units is not activated; and receiving intermittent sensor readings from the selectively activated intermittent sensor units with the controller.and evaluating the continuous and intermittent sensor readings with the controller to determine whether thermal runaway conditions (TRP conditions) exist in the energy storage device.
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Citation Information

Patent Citations

  • Sensor arrangement and methods for using it

    DE102010047960A1