In August already 4 people died in fiery crashes in Tesla cars
Do you have links for these fires?
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In August already 4 people died in fiery crashes in Tesla cars
Thanks for coming back. So, you went from 57 to 62 kWh. That's 5 kWh. At ~3 miles per kWh your gain should be 15 miles or 24 km, not 14 (327-313).
Am I missing something here?
Fatal fiery crashes in August:Do you have links for these fires?
I see it more emergency pressure like relief valves and emergency venting. The link I posted that explains lithium plating says they will heat up all by themselves and eventually burst from plating. The fires we saw happen when that causes a chain reaction to the next cell, and on after that.They seem to act as panic buttons.
They significantly reduced regen braking last winter. My research tells me high kW charging (like regen) and cold cells don't mix. Do you think regen played a part in plating our batteries? What other reasons do you think winter would bring more caps? Wouldn't teh heat of summer be worse? They are worried about cooling after all.. I'm sure Tesla will cap stricter next winter again.
In this chart i already posted you can see that the risk of an onset caused by mechanical damage (nail) gets higher with the cathode potential rising. 4,14V EoCV means ~4,23V cathode potential:Those fires are tragic, but this thread is about cars catching fire when we aren't driving them, maybe even sleeping.
The cars which crashed were being driven, thus would not be anywhere near those voltage potentials.In this chart i already posted you can see that the risk of an onset caused by mechanical damage (nail) gets higher with the cathode potential rising.
The values from the chart are values you can't measure from outside. You always have the equation CV=PoC-PoA, where CV= Cell voltage at current =0, PC= Potential of Cathode, PoA= Potential of Anode.
A battery with a li-plated Anode has not the same charging curve anymore as a new battery. A battery with a massive loss of cycleable Lithium has not the same stable cathode as a new battery. Just for understanding.
In general NCA is not one of the most stable cathodes as you can see from the chart.
Btw a german engineering service gives the Tesla battery a hazard level of 6 (highest = 7) concerning nail test.
View attachment 579316
This is a revaluation of the battery from a Model S, they inspected 2 years before. In this point (overcharging protection) Tesla and other manufacturers did a good job and the valuation got better.
In general, european manufacturer stated a self commitment to not use hazard level > 4 components.
The values from the chart are values you can't measure from outside. You always have the equation CV=PoC-PoA, where CV= Cell voltage at current =0, PC= Potential of Cathode, PoA= Potential of Anode.
A battery with a li-plated Anode has not the same charging curve anymore as a new battery. A battery with a massive loss of cycleable Lithium has not the same stable cathode as a new battery. Just for understanding.
In general NCA is not one of the most stable cathodes as you can see from the chart.
Btw a german engineering service gives the Tesla battery a hazard level of 6 (highest = 7) concerning nail test.
View attachment 579316
Here the older evaluation of the Model S compared to a ZOE:Is there a version of the same chart showing other EV's besides Tesla Model X and Bolt?
When Teslas crash at a speed so high as to split the car in two (Thousand Oaks crash), I think it's reasonable to expect the battery pack to light up. Why would this have anything to do with what's being discussed in this thread? Find a Tesla that caught on fire while parked and then we can start talking. The two fires linked are accident related and irrelevant.
So now we're equating spontaneous fires while parked with fires following fatal high speed crashes?Please look closely at the charts and his additional very useful (and relevant) information he has posted. The comparison "nail" test itself shows various vulnerabilities. As you have advised us previously, don't see any value to what's posted, skip it. We see lots of values in these postings.