MOTD (Meme of the Day)

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a_kelley said:
you got a better idea to recharge an electric car road side(equivalent of putting in gas when you run out)? Other than to tow to a charging station?
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That trailer could be a battery pack and inverter instead of a generator, but the generator still makes more sense from a power density and refueling standpoint. A battery/inverter could potentially charge the car as fast/faster in a smaller package than a big generator, but would then need recharging itself obviously.

While we're on-topic, I can't help but think this is going to be a great business once electric cars get a lot more prevalent. People are always going to not pay attention and run out of fuel/power, so there will always be a need for mobile refueling.
But, with a gas/diesel power car, you can dump some fuel in the tank and move on to the next person needing help.

With an electric car, you're going to be billing man hours while it charges. And charges. And charges. And charges. So, sounds like a lucrative business. Startup costs are higher though, because your refueling equipment is no longer a $20 gas can....
 
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Fabrik8 said:
That trailer could be a battery pack and inverter instead of a generator, but the generator still makes more sense from a power density and refueling standpoint. A battery/inverter could potentially charge the car as fast/faster in a smaller package than a big generator, but would then need recharging itself obviously.

While we're on-topic, I can't help but think this is going to be a great business once electric cars get a lot more prevalent. People are always going to not pay attention and run out of fuel/power, so there will always be a need for mobile refueling.
But, with a gas/diesel power car, you can dump some fuel in the tank and move on to the next person needing help.

With an electric car, you're going to be billing man hours while it charges. And charges. And charges. And charges. So, sounds like a lucrative business. Startup costs are higher though, because your refueling equipment is no longer a $20 gas can....
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$X connection fee + $X per minute to get enough charge to get you to the nearest charging station.
 
Fabrik8 said:
That trailer could be a battery pack and inverter instead of a generator, but the generator still makes more sense from a power density and refueling standpoint. A battery/inverter could potentially charge the car as fast/faster in a smaller package than a big generator, but would then need recharging itself obviously.

While we're on-topic, I can't help but think this is going to be a great business once electric cars get a lot more prevalent. People are always going to not pay attention and run out of fuel/power, so there will always be a need for mobile refueling.
But, with a gas/diesel power car, you can dump some fuel in the tank and move on to the next person needing help.

With an electric car, you're going to be billing man hours while it charges. And charges. And charges. And charges. So, sounds like a lucrative business. Startup costs are higher though, because your refueling equipment is no longer a $20 gas can....
Click to expand...

with that, it would be good to understand how far you could get on something smaller. The newer jump boxes have a decent amount of power in a small package. Wonder how far you could get with a lithium battery pack the size of a traditional car battery? Of course most wouldnt charge it also.
 
paradisePWoffrd said:
with that, it would be good to understand how far you could get on something smaller. The newer jump boxes have a decent amount of power in a small package. Wonder how far you could get with a lithium battery pack the size of a traditional car battery? Of course most wouldnt charge it also.
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Probably not very far because of capacity and voltage, and there are thermal management issues with depleting a small battery that fast. Jump packs are duty-cycle limited for those same reasons of thermal management.

An interesting approach could be a hybrid battery/generator setup, where the charging trailer would have a battery bank with inverter, and a small generator. The battery bank would supply the large voltage/current for fast charging, and the generator would recharge the battery bank at a lower average rate while driving around town.
 
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Put a hitch on the car and they can tow the trailer back to a charging station when done, of course you get rights to their car if not returned. And everyone know Prius drivers are excellent at towing.....

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Fabrik8 said:
Probably not very far because of capacity and voltage, and there are thermal management issues with depleting a small battery that fast. Jump packs are duty-cycle limited for those same reasons of thermal management.

An interesting approach could be a hybrid battery/generator setup, where the charging trailer would have a battery bank with inverter, and a small generator. The battery bank would supply the large voltage/current for fast charging, and the generator would recharge the battery bank at a lower average rate while driving around town.
Click to expand...

Or a MV battery pack charger.....
 
Fabrik8 said:
While we're on-topic, I can't help but think this is going to be a great business once electric cars get a lot more prevalent. People are always going to not pay attention and run out of fuel/power, so there will always be a need for mobile refueling.
But, with a gas/diesel power car, you can dump some fuel in the tank and move on to the next person needing help.

With an electric car, you're going to be billing man hours while it charges. And charges. And charges. And charges. So, sounds like a lucrative business. Startup costs are higher though, because your refueling equipment is no longer a $20 gas can....
Click to expand...
The equallt lucrative business will be a taco truck with a giant battery. Comes by, you order lunch and hang out while they charge your battery.
Or, just think of it as the refueling guy selling munchies to enjoy while you wait.
Or - why not by a rolling movie theatre?
 
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