Tesla Inc (TSLA)

[boston745]

Electric vehicles catch fire at Tesla repair facility in Miramar

An investigation is underway after a fire erupted at a Tesla repair facility in Miramar Friday, officials with San Diego Fire-Rescue confirmed.

A call came around 1:30 a.m. initially reporting the blaze in the 9200 block of Trade Place. Fire crews responded to the scene and found four electric vehicles burning right outside the facility.

SDFD Capt. David Scigliano said crews went ahead and suppressed the fire at that time. There was no extension inside the building.

“Once we cleared the scene, as batteries do — these lithium ion batteries do — they reignite, so we were called back out for the one vehicle you see smoldering right now,” Capt. Scigliano told FOX 5/KUSI at the scene around 7 a.m.

Up to 4 Teslas spontaneously combusted and 1 of the 4 reignited hours later because thats what lithium batteries do. Lots of seimic activity occuring in California this year and yesterday a CME struck. Watch for news of out of control Teslas as well.

https://fox5sandiego.com/news/local-news/electric-vehicles-catch-fire-at-tesla-repair-facility-in-miramar/

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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