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The thermal failure criteria of the battery box is defined by a maximum system operating temperature.
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Temperature Limit of System: 45 °C |
This value was determined based on the LG MJ1 (Rechargeable Lithium-Ion Battery) Datasheet. It can be found in Appendix 1 of the ASC 2021 VDR Battery Tech Report.
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Battery Box Cooling Requirements - ASC Regs
Assembly, geometry, and material properties of the battery box
This page summarizes materials used in the battery box and their associated thermal characteristics → Specific Heat Capacity of the Battery Pack
Also summarized below
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Component
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Material
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Thermal Conductivity (W/ m K)
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Specific Heat Capacity (J/kg K)
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Mass (kg)
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LG MJ1 18650
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assume uniform temp within 18650s
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830
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41.5 (48 g* 864 cells)
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Nickel
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90
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440
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0.8
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EMS Sigma 60
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200
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400
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Acetal
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0.3-0.37
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1400-1500
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Fish Paper
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0.29
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1687
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PETG
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0.29
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1200
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Air
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0.025
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