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THE Electric Vehicle (EV) Thread pt 15

Discussions of conventional and alternative energy production technologies.

Re: THE Electric Vehicle (EV) Thread pt 15

Unread postby theluckycountry » Fri 26 Apr 2024, 07:48:07

A brutal elimination round is reshaping the world’s biggest market for electric cars

A “life and death race” has begun to unfold in the world’s largest market for electric vehicles (EV)
Chinese EV makers showing off their newest models at Auto China, which kicks off in Beijing on Thursday, have enjoyed generous support from the government for years, with some growing rapidly to become global players. BYD, for example, is now vying with Tesla for leadership of the battery electric vehicle market.

But all of the country’s more than 200 EV manufacturers are now grappling with huge oversupply, and experts predict many smaller companies will not survive the fiercely-competitive environment.

From a brutal price war to slowing sales in a weakening economy, the challenges unfolding in China have also forced some global automakers to retreat. And, it doesn’t help that the enthusiasm for EVs is waning in other markets around the world.

“China’s EV industry is only going to go from strength to strength as a whole, but not every player today will see the finish line,” said Mark Rainford, an automotive industry commentator based in Shanghai who hosts the YouTube channel “Inside China Auto.” Even Chinese officials have said that carmakers will need a cast iron stomach to pull through the next few months.
https://finance.yahoo.com/news/brutal-e ... 49807.html

Even the Chinese are in trouble.


And just for fun.

LA Times
Man who drove Tesla off cliff with family in car was 'psychotic,' doctors say
Two doctors testified that the man who drove his Tesla off a cliff with his wife and children in the car suffered from major depressive order and was experiencing a psychotic break at the time of the crash.

The testimony came Wednesday in the case of Dharmesh Patel, a Pasadena radiologist who was charged with three counts of attempted murder after he drove the family's Tesla off the cliff at Devil's Slide on Highway 1 near Half Moon Bay, according to prosecutors.


Probably disparing because of the higher interest rates and the fact he can't sell his Tesla for anything like it cost him. When rates shoot up like they have people tent to sell toys bough in the good times, often at a big loss. But the losses on a used Tesla are so great now it's hardly worth selling one.
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Re: THE Electric Vehicle (EV) Thread pt 15

Unread postby careinke » Fri 26 Apr 2024, 19:57:08

theluckycountry wrote:
And just for fun.

LA Times
[b]Man who drove Tesla off cliff with family in car was 'psychotic,' doctors say

Two doctors testified that the man who drove his Tesla off a cliff with his wife and children in the car suffered from major depressive order and was experiencing a psychotic break at the time of the crash.

The testimony came Wednesday in the case of Dharmesh Patel, a Pasadena radiologist who was charged with three counts of attempted murder after he drove the family's Tesla off the cliff at Devil's Slide on Highway 1 near Half Moon Bay, according to prosecutors.[/quote

Probably disparing because of the higher interest rates and the fact he can't sell his Tesla for anything like it cost him. When rates shoot up like they have people tent to sell toys bough in the good times, often at a big loss. But the losses on a used Tesla are so great now it's hardly worth selling one.


Rather than postulating (guessing with no data), on why he did it, I was more intrigued with the outcome. The car went over a 200ft drop, landing directly on the rocks below and hit nothing else on the way down. All of the occupants survived the crash. The police, and rescuers stated were astounded, stating this would be considered a non-survivable crash. And gee, it didn't blow up like an ICE would, nor did the "dangerous" battery even catch on fire.

I like how safe TESLAs really are, definitely going to be my next car.

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Re: THE Electric Vehicle (EV) Thread pt 15

Unread postby theluckycountry » Sat 27 Apr 2024, 02:38:51

careinke wrote:Rather than postulating (guessing with no data), on why he did it, I was more intrigued with the outcome. The car went over a 200ft drop, landing directly on the rocks below and hit nothing else on the way down.

There is no evidence of that, why make it up? It could have easily been slowed by interaction with the slope. Reports say the heavy battery is what prevented it from flipping over and over, a definite advantage in this case and probably a greater factor in the survival of the occupants since it landed on it's feet, it's flexible tires, it's flexible suspension. Even the springs and padding in the seats would have contributed to damping the crash effects, even their positions, sitting upright would have aided them.

So yes, I suppose in this case, if you want to drive off a 200 foot mountain side and survive, then an EV is your choice of vehicle.
And gee, it didn't blow up like an ICE would, nor did the "dangerous" battery even catch on fire.
I like how safe TESLAs really are, definitely going to be my next car.

Well you're certainly the type of person who would buy one, and that's a problem! You need to wise up mate. That is to say a person who knows nothing of the underlying technology and instead relies on marketing pitches to make their major purchasing decisions for them. This is quite ubiquitous now, people rushing into buy new-build homes and apartments because of a fancy brochure that glossed over all the downsides. Investing their life savings in companies like Enron, Tesla, WeWork et al because some smooth talking huckster stood before a camera and told them that "This was the future" and if they didn't buy in now they would miss the boat forever. Sounds a bit like Saylor's shrill claims doesn't it?

As for the batteries not catching fire. They only explode in flames when they have a lot of stored energy, it is this instantaneous energy release that causes the devastating fires. Obviously this one was low on charge, ergo no fire. I mean think about it... Enough energy to power a 2 ton car along at 60 miles per hour for 200 miles.


This paper studies the effect of the state of charge (SOC) on the self-heating behavior of LiCoO2 prismatic cells. The SOC of 0% (of interest in the safety of waste facilities), 30% (transport), 50% (storage), 80% (aged battery) and 100% (fully-charged battery), and 1, 2 and 4 cells stacked together were studied using oven experiments. Results show that cells at all SOC can self-ignite. Flames were only observed for SOC larger than 80%. We compare two temperature criteria...

Both temperature criteria decrease with increasing SOC showing that the hazard grows with energy density.
https://www.sciencedirect.com/science/a ... 1122005683

Trust the Science careinke, not the hucksters manipulating science for their personal profit.

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Re: THE Electric Vehicle (EV) Thread pt 15

Unread postby frankthetank » Sun 28 Apr 2024, 10:50:44

I've had the Model 3 with the LFP battery pack for about a year. For what i understand this cell chemistry is a lot safer than normal lithium ion. People also use LFP for home power storage connected to solar. LFP is great because the voltage is very flat down to almost zero and can be regularly charged to 100% and doesn't use cobalt. It does have less power density.
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Re: THE Electric Vehicle (EV) Thread pt 15

Unread postby theluckycountry » Thu 02 May 2024, 06:46:50

LFP is all that's allowed in Australian EV's. We keep a tighter rein on things than many countries. LFP is lighter, but more expensive and has a lower power density as you say Frank but they do have a longer cycle life.
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