General > General Technical Chat
If Your Electric Car Runs Out of Power on the Highway ...
EPAIII:
OK, semi serious suggestion for charging while driving.
Have TWO batteries. One in the vehicle and one in a trailer. Solar cell array on the trailer charges one battery while the other is used to power the vehicle. Switch back and forth even while moving.
Of course, you could just make the vehicle larger and have everything on/in it.
Or make the vehicle smaller and the trailer larger and have both batteries and the solar array in it.
I made many trips along I-10 in Texas and across to the West Coast. The sun is a beast along that route so this should work like a charm most of the time.
--- Quote from: Andy Chee on January 01, 2024, 08:35:23 am ---
--- Quote from: Smokey on January 01, 2024, 07:55:26 am ---
--- Quote from: Andy Chee on December 31, 2023, 03:54:48 am ---Build a range extender
--- End quote ---
There is another one now where this guy swapped in a diesel engine...
I'm pretty sure this is bullshit, and he's just driving around a normal tesla with an engine running in the back doing absolutely nothing useful (except getting youtube views). They make zero mention of how this engine is putting energy into the car. It's not mechanically coupled to the wheels. And they don't have any electronics to boost a generators voltage up to pack voltage (400V) to charge the pack. I'm pretty sure the Tesla BMS would lose its shit if it detected the battery charging while the vehicle was moving anyway.
--- End quote ---
You don't need 400V to charge the pack, you only need household 240V.
I agree somewhat about the Tesla computer preventing simultaneous charging and movement, I realise that Tesla hackers have done all sorts of weird system bypasses, so charging whilst moving is not out of the realm of possibilities.
--- End quote ---
EPAIII:
--- Quote from: Andy Chee on January 01, 2024, 09:17:10 am ---
--- Quote from: EPAIII on January 01, 2024, 09:09:03 am ---Electric trains and the street cars I showed above run on steel rails, which are conductors. And those conductive rails cost absolutely nothing extra.
--- End quote ---
For a rubber wheeled vehicle, you can have the return current returning back to a second overhead wire, though, it obviously presents a challenge in aligning the pantograph with the two wires.
--- End quote ---
Those old New Orleans electric busses had the panto-graph problem solved over 70 years ago. They just used a pair of shoes with grooves or perhaps rollers in them. The overhead wires just pulled the panto-graph left or right to follow them as the bus ran along. It could be a whole lane over from where the wires were with no problems with the panto-graph tracking properly. It was a rare instance where the panto-graph jumped off the wires.
After watching the video, I have to wonder what's to stop someone in a car from having a panto-graph and stealing free power? Would the police have to ticket free-loaders?
Or would the power just be available for everyone with no charge? Wouldn't that tick off the people who think they are going to become billionaires with electric vehicles. But free power for all would be true socialism instead of the oppressive type that most socialist leaders want to impose, wouldn't it?
Now all we need is a way to get the cars for free too. And f.. the would-be billionaires. There could be some fun in this after all.
jonovid:
wait 1 or 2 hrs for a recharge if you have a diesel generator in the trunk. or call a tow truck. if your still got cell phone coverage or a working CB radio?
as always be prepared for anything, do not leave home on a long journey without fully charged batteries. go figure.
Andy Chee:
--- Quote from: EPAIII on January 01, 2024, 09:31:25 am ---After watching the video, I have to wonder what's to stop someone in a car from having a panto-graph and stealing free power? Would the police have to ticket free-loaders?
--- End quote ---
It's no stretch of the imagination that they would have number plate recognition cameras along the route to catch people stealing electricity.
Smokey:
--- Quote from: Andy Chee on January 01, 2024, 08:35:23 am ---
--- Quote from: Smokey on January 01, 2024, 07:55:26 am ---
--- Quote from: Andy Chee on December 31, 2023, 03:54:48 am ---Build a range extender
--- End quote ---
There is another one now where this guy swapped in a diesel engine...
I'm pretty sure this is bullshit, and he's just driving around a normal tesla with an engine running in the back doing absolutely nothing useful (except getting youtube views). They make zero mention of how this engine is putting energy into the car. It's not mechanically coupled to the wheels. And they don't have any electronics to boost a generators voltage up to pack voltage (400V) to charge the pack. I'm pretty sure the Tesla BMS would lose its shit if it detected the battery charging while the vehicle was moving anyway.
--- End quote ---
You don't need 400V to charge the pack, you only need household 240V.
I agree somewhat about the Tesla computer preventing simultaneous charging and movement, I realise that Tesla hackers have done all sorts of weird system bypasses, so charging whilst moving is not out of the realm of possibilities.
--- End quote ---
If your battery is at 400V then you need to make over 400V somehow to charge that battery (yes I know the battery is already fully charged at 400V, but the same holds for 350V, or 300V). The 240V(AC) from your house gets rectified and boosted/bucked by the internal charger so it charges at the right current. If that charger refuses to close the charge contactors, like for instance if the vehicle is on or moving, then you can plug whatever you want in but it's not getting into the battery.
Yes, people have done some wacky stuff hacking teslas, but that guy in the video looks and sounds like an idiot.
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