Optical energy storage monitoring solution

Are optical fiber sensors a good solution for detecting battery safety issues?

Optical fiber sensors offer an ideal solution for detecting battery safety issues due to their flexibility, small size, light weight, high temperature resistance, electrochemical corrosion resistance, nonconductivity, immunity to electromagnetic interference, and sensitivity to ambient temperature and stress/strain [37 – 39].

What is optical fiber stress/strain sensor?

The optical fiber sensor represents an ideal solution. This device has received considerable attention in the field of batteries due to its advantageous characteristics, including small size, light weight, high interference immunity, chemical resistance, and implantable measurements. FBG is the most commonly used optical fiber stress/strain sensor.

What are the uses of energy storage devices?

They are widely used in portable consumer electronic devices (cell phones, cameras, and laptops), transportation (electric bicycles, electric cars, and electric buses), aerospace (solar cell energy storage devices), large-scale smart grid energy storage systems, and renewable energy systems [8 – 10].

What are the advantages of optical fiber sensors?

Moreover, the high sensitivity of optical fiber sensors and their multiplexing capability allow the integration of multifunctional sensing structures on a single optical fiber sensor, thereby enabling the simultaneous and accurate monitoring of multiple parameters and states of the battery with excellent spatial and temporal resolution.

What types of temperature detection methods are used in energy storage systems?

Presently, common temperature detection methods in energy storage systems include TCs [57, 58], thermistors [59, 60], resistance temperature detectors [58, 61], thermal imaging , and infrared thermography [63 – 65].

Why is temperature monitoring important for a commercial battery?

Therefore, accurate temperature monitoring and mechanical stress control are crucial for optimizing battery performance and extend battery life. However, commercial batteries (e.g., electric vehicles and energy storage systems) are rarely measured directly at the single-cell level.