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Chinese Journal of Lasers, Volume. 47, Issue 12, 1204002(2020)

Distributed Optical Fiber In-Situ Monitoring Technology for a Healthy Temperature Field in Lithium Ion Batteries

Zhou Weihang1,2, Ye Qing1,2, Ye Lei1, Li Xuan1, Zeng Chaozhi3, Huang Chun3, Cai Haiwen1,2, and Qu Ronghui1,2
Author Affiliations
  • 1Key Laboratory of Space Laser Communication and Detection Technology, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • 2Centre of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
  • 3Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
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    AbstractGet PDF(in Chinese)
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    References (28)
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    Figures & Tables(13)
    Structure diagram of lithium ion battery with soft pocket

    Fig. 1. Structure diagram of lithium ion battery with soft pocket

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    Simulation results of temperature field of the battery pouch at normal temperature. (a) Initial state; (b) middle moment of discharge process; (c) end moment of discharge process

    Fig. 2. Simulation results of temperature field of the battery pouch at normal temperature. (a) Initial state; (b) middle moment of discharge process; (c) end moment of discharge process

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    Simulation diagram of the temperature change of the battery with the operating voltage during one cycle. (a) Normal temperature 17 ℃; (b) 30 ℃

    Fig. 3. Simulation diagram of the temperature change of the battery with the operating voltage during one cycle. (a) Normal temperature 17 ℃; (b) 30 ℃

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    Experimental setup diagram (including photograph of a battery pouch with the embedded FBG sensors)

    Fig. 4. Experimental setup diagram (including photograph of a battery pouch with the embedded FBG sensors)

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    Schematic diagram of fiber grating sensor temperature measurement

    Fig. 5. Schematic diagram of fiber grating sensor temperature measurement

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    Schematic diagram of FBG distributed sensing system

    Fig. 6. Schematic diagram of FBG distributed sensing system

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    Embedded method of the sensors & physical picture of battery embedded with FBGs

    Fig. 7. Embedded method of the sensors & physical picture of battery embedded with FBGs

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    Characteristic temperature change and errors of the battery during 3 cycles at room temperature (17 ℃). (a) Actual measured data; (b) error between theoretical data and actual data

    Fig. 8. Characteristic temperature change and errors of the battery during 3 cycles at room temperature (17 ℃). (a) Actual measured data; (b) error between theoretical data and actual data

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    Trend of temperature change of three measuring points of the battery pouch under different ambient temperatures. (a) 30 ℃; (b) 40 ℃; (c) 50 ℃

    Fig. 9. Trend of temperature change of three measuring points of the battery pouch under different ambient temperatures. (a) 30 ℃; (b) 40 ℃; (c) 50 ℃

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    Local arrangement of battery pack and thermistor temperature sensor on battery pack for Tesla Model 3

    Fig. 10. Local arrangement of battery pack and thermistor temperature sensor on battery pack for Tesla Model 3

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    Schematic diagram of concatenation of distributed optical fiber sensors in multi-battery array

    Fig. 11. Schematic diagram of concatenation of distributed optical fiber sensors in multi-battery array

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    • Table 1. Specifications and performance parameters of the 5500 mA·h lithium-ion battery

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      Table 1. Specifications and performance parameters of the 5500 mA·h lithium-ion battery

      ItemTechnical parameterRemark
      Rated capacity5500 mA·h
      Standard voltage3.7 V
      Weight(128±0.02) g
      SpecificationsThickness:10 mmWidth:72 mmHeight:81 mmHeight without taps
      Maximum charge rate5 C
      Maximum discharge rate50 C
      Charge cut-off voltage4.2 VConstant current & constant voltage
      Discharge cut-off voltage3 V
      Operating temperatureDischarge: -20~60 ℃
      Cycle life≥ 2000

    • Table 2. Thermal physical parameters of each part of 5500 mA·h lithium-ion battery

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      Table 2. Thermal physical parameters of each part of 5500 mA·h lithium-ion battery

      MaterialDensity /(kg·m-3)Thermal conductivity /(W·m-1·K-1)Specific Heat Capacity /(J·kg-1·K-1)
      Single cell2122kx:21; ky:21; kz:0.48933
      Positive tap2719202.4871
      Negative tap8978387.6381
      Separator10080.33441978
      Case819314.7439.3
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    Zhou Weihang, Ye Qing, Ye Lei, Li Xuan, Zeng Chaozhi, Huang Chun, Cai Haiwen, Qu Ronghui. Distributed Optical Fiber In-Situ Monitoring Technology for a Healthy Temperature Field in Lithium Ion Batteries[J]. Chinese Journal of Lasers, 2020, 47(12): 1204002

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    Paper Information

    Category: Measurement and metrology

    Received: Jun. 15, 2020

    Accepted: --

    Published Online: Nov. 27, 2020

    The Author Email:

    DOI:10.3788/CJL202047.1204002

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology