Tesla Inc (TSLA)

[boston745]

Tesla bursts into flames at EV charging station in Upper Allen

A call for a car fire in Upper Allen turned out to be a much more difficult blaze to put out , after officials determined the fire happened at an EV station.

The fire happened at the Upper Allen Sheetz at around 5:50 p.m. Monday night, according to Upper Allen Fire Department.

When they arrived on scene, fire crews started battling the flames and later were able to douse the car's battery after most of the fire was put out.

After this, officials stated the Tesla was then towed away while crews remained on scene for any possible spills, runoffs, or possible re-ignition of the fire.

Some increased geomagnetic activity the last two days and now a Tesla spontaneously combusts...hmm.




https://www.local21news.com/news/local/tesla-ev-charging-station-sheetz-fire-upper-allen-cumberland-county-pennsylvania
https://isdc.gfz-potsdam.de/nowcast-hpo/

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How does EMF cause lithium batteries to experience thermal runaway and thus spontaneously combust? One of two main ways:

#1 - Overcharge/Discharge

With various impressed external magnetic field intensities an effect was noticed on the charge and discharge curves as well as the charge and mass concentrations within the batteries. With the two-dimensional model starting from 0mT and going to 1mT had the effect of discharging the battery faster and charging the battery faster. With the two-dimensional model starting from 1mT and going to -1mT had the effect of charging the battery faster. In either case an effect on the various characteristics of the battery were studied. With the experiments conducted on the two types of batteries the effect was more profound than subtle. Discharge times were twice as fast and charge times were equally
affected. With the smaller batteries they all generally charged faster under the presence of a magnetic field due to more uniform penetration. In the presence of the field they also discharged faster. The larger batteries would not see the same uniform penetration because only a small area of the battery sees the center of the coil it is placed on

In this dissertation, they found that external magnetic fields significantly increased charge and discharge rates in individual lithium battery cells; like shown in the following image. They also found that smaller batteries were impacted to a greater degree than larger ones. This is likely a reason Tesla is switching to larger battery cells in addition to employing magnetic attenuating honeycomb sandwich battery pack.

Thermal Runaway of Lithium-Ion Batteries Triggered by Electromagnetic Interference
https://ieeexplore.ieee.org/document/9025761

https://ars.els-cdn.com/content/image/1-s2.0-S0378775320302172-fx1_lrg.jpg

#2 - Stimulation of Dendrite Growth

Thermoelectric current causes asymmetric growth pattern of dendrites.

thermoelectromagnetic convection occurs in the vicinity of the solid-liquid interface, and vortices are generated between dendritic arms. It is shown that the thermoelectromagnetic convection has a major influence on dendritic morphology.

Quote Sources:

#1:https://digitalcommons.njit.edu/theses/1743

#2:https://www.sciencedirect.com/science/article/abs/pii/S001793101930225X