Technical FAQs 4

Can heptafluoropropane be used as a blanket gas?

If the heptafluoropropane (HFC-227ea) was used as a blanket gas for delaying the time of LIB TR would be a meaningful work. In this paper, the TR characteristics of cylindrical 18,650 LIBs with various state of charges (SOCs) have been investigated under different HFC-227ea concentrations.

Which is better heptafluoropropane or CO2?

Nitrogen (N2), argon (Ar), and carbon dioxide (CO2) are commonly considered to extinguish the LIB fires due to their lightweight nature and simple implementation [19, 20]. Heptafluoropropane (HFC-227ea) has been verified to be more effective than CO 2 in suppressing the fire and TR propagation .

Can HFC-227ea inhibit tr in an enclosure space?

Therefore, the HFC-227ea was filled in the sealed box which simulates as LIB packaging box. A series of experiments have been conducted and the experimental results show that the HFC-227ea can inhibit the TR in an enclosure space obviously. 2. Experimental facility 2.1. Battery samples

Are LFP batteries a hazard?

Specifically, the hazard for LFP batteries is significantly higher compared to lithium ternary (NCM) batteries, manifesting in greater maximum explosion pressure (Pmax), laminar burning velocity (LBV, Su0), and a lower explosion lower limit [15, 18].

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