Distributed internal thermal monitoring of lithium ion batteries with fibre sensors

Optical Fiber‐Based Gas Sensing for Early Warning of Thermal Runaway in Lithium‐Ion Batteries

“…Huang et al [19,120] inserted an optical FBG sensor into the 18650 cylindrical cell by drilling a hole at the negative pole, prior to filling the electrolyte. Similarly, Yu et al [121] embodied optical fiber from the negative pole of 21700 cell (Figure 12a). Besides, the positive pole of the battery cell can be another entrance [122,123] (Figure 12b,c).…”

“…After 50 Reproduced according to the terms of the CC BY license. [121] Copyright 2018, the authors, published by Elsevier. b) FBG sensor was inserted into the central void of jellyroll from the positive pole to monitor temperature.…”

Health prognostics for lithium-ion batteries: mechanisms, methods, and prospects

“…However, the limited information obtained by current external sensors makes it hard for accurate and robust estimations under different scenarios. On the other hand, the internal sensing technology promotes smart battery development with highly efficient detection and management, such as thin film strain gauge and fiber sensing methods 146,147 . For example, Wei et al 148 proposed a joint estimation framework with an embedded and distributed fiber optical sensor for internal and surface temperature measurement.…”

“…On the other hand, the internal sensing technology promotes smart battery development with highly efficient detection and management, such as thin film strain gauge and fiber sensing methods. 146,147 For example, Wei et al 148 proposed a joint estimation framework with an embedded and distributed fiber optical sensor for internal and surface temperature measurement. After understanding the internal structure of the cylindrical battery by computerized tomography scanning, a 0.9 mm hole is drilled into the center of the negative terminal.…”

Battery Cell Temperature Sensing Towards Smart Sodium-Ion Cells for Energy Storage Applications

“…Fibre optics offer distributed sensing (e.g. 2.6 mm spatial resolution [26]), thus can provide a detailed temperature map. Their fragility and relatively high cost currently restrict their use to laboratory experimentation; although their long sensing length (e.g.…”