[sp]I was expecting that to go horribly wrong[/sp]
Just like in The Simpsons but with no dolphins or mermaids
Perks of not having a combustion engine
that sassy steering after he went through :v:
[QUOTE=RIPBILLYMAYS;50545428]Perks of not having a combustion engine[/QUOTE]
Personally I'd still rather not drive my $70,000+ luxury sedan that I imported from another country through water that comes up to the windshield regardless of if it's an EV or ICE car.
[QUOTE=Morgen;50545456]Personally I'd still rather not drive my $70,000+ luxury sedan that I imported from another country through water that comes up to the windshield regardless of if it's an EV or ICE car.[/QUOTE]
You shouldn't drive any car through a flood is the wiser choice.
[QUOTE=RIPBILLYMAYS;50545428]Perks of not having a combustion engine[/QUOTE]
Could someone explain this further?
I imagine not requiring air, for one, helps a lot, but could the electric motor(s) actually run underwater?
God Bless Elon Musk
[QUOTE=Im Crimson;50545617]Could someone explain this further?
I imagine not requiring air, for one, helps a lot, but could the electric motor(s) actually run underwater?[/QUOTE]
it would have to be water-tight to prevent it getting regular day-to-day water damage so i would guess so
[QUOTE=Im Crimson;50545617]Could someone explain this further?
I imagine not requiring air, for one, helps a lot, but could the electric motor(s) actually run underwater?[/QUOTE]
Well since they don't require air you can seal it off to prevent water getting into it. If the seal breaks then the PCBs are probably going to get a bit fucked.
The cars life has probably been reduced
[QUOTE=Im Crimson;50545617]Could someone explain this further?
I imagine not requiring air, for one, helps a lot, but could the electric motor(s) actually run underwater?[/QUOTE]
It's very easy to waterproof electric motors, as they don't need to take in or let out any gases, and they are smaller and have less moving parts.
I have an RC car that is entirely waterproof, could drive the thing at the bottom of a pool :v:
Could you imagine all those batteries venting, that wouldn't be very good.
[QUOTE=Im Crimson;50545617]Could someone explain this further?
I imagine not requiring air, for one, helps a lot, but could the electric motor(s) actually run underwater?[/QUOTE]
the motors are much more sealed than an engine which has air intakes.
[QUOTE=Morgen;50545650]Well since they don't require air you can seal it off to prevent water getting into it. If the seal breaks then the PCBs are probably going to get a bit fucked.[/QUOTE]
i think i'd be concerned about more than just the pcbs, shorting what is essentially a gigantic battery on wheels isn't gonna be loads of fun for the passengers or frankly anyone else who is also in the same puddle of water that you are in.
[QUOTE=Im Crimson;50545617]Could someone explain this further?
I imagine not requiring air, for one, helps a lot, but could the electric motor(s) actually run underwater?[/QUOTE]
So long as the pressure isn't high enough to break the waterproofing, being under water isn't a big deal at all for EVs. Most ROVs are electric, just put a decent seal on and you're golden.
[QUOTE=Joeyl10;50545770]i think i'd be concerned about more than just the pcbs, shorting what is essentially a gigantic battery on wheels isn't gonna be loads of fun for the passengers or frankly anyone else who is also in the same puddle of water that you are in.[/QUOTE]
Do you think it's going to electrocute passengers? Why? Unless the passengers are lying on the batteries the shortest path from + to - is not going to be out of the battery pack, up through the water into the interior, through the passenger, then back to the other terminal. It's not like it can catch fire either, because... it's underwater.
[media]https://youtu.be/dcrY59nGxBg[/media]
so basically if you're literally licking the battery pack you might be in some danger but this isn't hollywood, electricity in water won't nonsensically route through the water to you and back
[QUOTE=Joeyl10;50545770]i think i'd be concerned about more than just the pcbs, shorting what is essentially a gigantic battery on wheels isn't gonna be loads of fun for the passengers or frankly anyone else who is also in the same puddle of water that you are in.[/QUOTE]
I would say the battery is a non-issue. The battery is sealed incredibly well. If you short out the 12v system then the high voltage pack disconnects as well. If you did manage to short out the high voltage pack then the fuse wires on the cells would blow. See:
[video=youtube;_IYXxGQ6Giw]https://www.youtube.com/watch?v=_IYXxGQ6Giw[/video]
[QUOTE=Im Crimson;50545617]Could someone explain this further?
I imagine not requiring air, for one, helps a lot, but could the electric motor(s) actually run underwater?[/QUOTE]
Combustion engines require fuel to be mixed with air. This means the system must have some form of intake and exhaust. This is why your car stops running if water gets too high. It starts to flood the engine compartment and gets into the chambers where fuel mixes with oxygen.
Electric motors on the other hand can be completely closed and sealed. No intake, no exhaust. There is the danger of the motors running too hot and catching fire if they're put under enough stress and not given a way to cool (in the case of normal operation, air would do this). In this situation, even if something did get hot enough to catch on fire, it wouldn't because it's submerged.
Plus there's the way the battery packs are designed. They're extremely safe in the event of a short so IF a seal did break and water was able to leak into it, the whole thing would just die like any other car vs burst into flames or electrify everything in the vicinity.
[QUOTE=Elspin;50545777]So long as the pressure isn't high enough to break the waterproofing, being under water isn't a big deal at all for EVs. Most ROVs are electric, just put a decent seal on and you're golden.
Do you think it's going to electrocute passengers? Why? Unless the passengers are lying on the batteries the shortest path from + to - is not going to be out of the battery pack, up through the water into the interior, through the passenger, then back to the other terminal. It's not like it can catch fire either, because... it's underwater.
[media]https://youtu.be/dcrY59nGxBg[/media]
so basically if you're literally licking the battery pack you might be in some danger but this isn't hollywood, electricity in water won't nonsensically route through the water to you and back[/QUOTE]
electrocution is the least of your worries. having a battery that big suddenly vent / explode is what should worry you.
[QUOTE=loopoo;50545975]electrocution is the least of your worries. having a battery that big suddenly vent / explode is what should worry you.[/QUOTE]
I doubt it would explode or even catch fire. Some old guy hit the brake instead of the accelerator and went through his garages brick wall, and into a pool. Completely submerged the car but the battery was intact.
Even if the battery does go into thermal runaway and the cells start venting it's designed to vent out of the front of the car. See:
[video=youtube;Pphr7WyNBWU]https://www.youtube.com/watch?v=Pphr7WyNBWU[/video]
[QUOTE=loopoo;50545975]electrocution is the least of your worries. having a battery that big suddenly vent / explode is what should worry you.[/QUOTE]
Lithium batteries explode due to heat exponentially rising inside the cell during things like overcharging, water actually prevents that effect by cooling them. You could be driving into boiling water if you're actively campaigning for a darwin award, but I'd think being in boiling water would kill you before the batteries did if they exploded at all (still unlikely)
[QUOTE=Jund;50545647]it would have to be water-tight to prevent it getting regular day-to-day water damage so i would guess so[/QUOTE]
So why aren't ICE cars water-tight considering they go through day-to-day water damage as well as the EVs?
[QUOTE=CruelAddict;50546131]So why aren't ICE cars water-tight considering they go through day-to-day water damage as well as the EVs?[/QUOTE]
I doubt the entire body is completely water tight, you only need the circuitry to be water tight to keep it running when in danger of water damage. Water isn't always disastrous to every electric circuit anyway, for example, here's a guy running a motor with no waterproofing underwater.
[media]https://youtu.be/kujrWwJfi0k[/media]
Why does this work? Well, why wouldn't it? There's still a connection to the motor's leads that creates a circuit, the only problem with this scenario is current will leak between the two leads. It could short circuit if the water was extremely contaminated or the voltage is extremely high (in the video he cranks the voltage up until it apparently destroys the motor), but pure water does not conduct at all.
[QUOTE=CruelAddict;50546131]So why aren't ICE cars water-tight considering they go through day-to-day water damage as well as the EVs?[/QUOTE]
Because you need air to to run an ICE, that's why offroad vehicles usually have snorkels so they can go deep in water [img]http://www.safarisnorkel.com/snorkel/ss525hf/defender_mud.jpg[/img]
[QUOTE=Elspin;50546152]I doubt the entire body is completely water tight, you only need the circuitry to be water tight to keep it running when in danger of water damage. Water isn't always disastrous to every electric circuit anyway, for example, here's a guy running a motor with no waterproofing underwater.
[media]https://youtu.be/kujrWwJfi0k[/media]
Why does this work? Well, why wouldn't it? There's still a connection to the motor's leads that creates a circuit, the only problem with this scenario is current will leak between the two leads. It could short circuit if the water was extremely contaminated or the voltage is extremely high (in the video he cranks the voltage up until it apparently destroys the motor), but pure water does not conduct at all.[/QUOTE]
I wonder how a three phase AC induction motor would react to water.
[QUOTE=Elspin;50546152]I doubt the entire body is completely water tight, you only need the circuitry to be water tight to keep it running when in danger of water damage. Water isn't always disastrous to every electric circuit anyway, for example, here's a guy running a motor with no waterproofing underwater.
[media]https://youtu.be/kujrWwJfi0k[/media]
Why does this work? Well, why wouldn't it? There's still a connection to the motor's leads that creates a circuit, the only problem with this scenario is current will leak between the two leads. It could short circuit if the water was extremely contaminated or the voltage is extremely high (in the video he cranks the voltage up until it apparently destroys the motor), but pure water does not conduct at all.[/QUOTE]
Holy shit 3:05 in that video haha
Electric motors are easy to waterproof because you basically can encase them, seal the power in and power out, then use a variety of seals for the drive shaft. For cooling it depends on the system, but if its water cooled that can be a closed loop and if its air cooled you might be able to build that into the case.
So at most you will have 4 static seals and one rotating seal. I think the main thing that kills ICEs with water is that you also need air in and exhaust out, which means the air intake needs to be above it.
Shouldn't the guy be worried about corrosion? Even if the car is fine now, all the sensitive electronic parts might not be in the best shape a couple weeks down the road, I doubt the whole thing is waterproofed.
Also
[media]https://twitter.com/elonmusk/status/744551674082136066[/media]
[media]https://twitter.com/elonmusk/status/744552621072064512[/media]
The Model S is extremely airtight as well, they were even joking with this with having a biohazard option in their air filtering menu.
[IMG]http://www.extremetech.com/wp-content/uploads/2015/10/Tesla-x-biohazard-button-640x343.jpg[/IMG]
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