Yan Mao, Xinglin Tong, Shigang Lu, Weida Chu. Implantable Fiber Bragg Grating Temperature Sensor Inside Lithium-Ion Battery[J]. Laser & Optoelectronics Progress, 2023, 60(17): 1706005
- Laser & Optoelectronics Progress
- Vol. 60, Issue 17, 1706005 (2023)
Fig. 1. Sensing principle of FBG
Fig. 2. Structure diagram of optical fiber F-P air chamber
Fig. 3. Reflection spectrum of FBG composite sensor
Fig. 4. Connection relationship of on-line fusion F-P air chamber
Fig. 5. Magnified fine images of tiny F-P air chamber. (a) Image saved by optical fiber fusion splicer; (b) CCD microscope image
Fig. 6. Comparison of F-P interference spectra before and after re-discharge
Fig. 7. Test data fitting for stress relieving
Fig. 8. Schematic diagram of sensor implantation into single lithium-ion battery. (a) Implantation position of sensor; (b) three-dimensional view of sensor after implantation
Fig. 9. Test block diagram of implantable sensor experimental system
Fig. 10. Temperature and voltage variation curves under different charging currents. (a) Test curve with charging current of 1 A; (b) test curve with charging current of 2 A
Fig. 11. Temperature and voltage variation curves under different discharge rates. (a) Test curve with discharge rate of 1 C; (b) test curve with discharge rate of 2 C
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Table 1. Spectral experimental data
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