On Board Alternator charging of eBoost battery: thoughts and ideas

C

cmoalem

Active member
I have been wrapping my head around the topic of topping up the eBoost battery while driving.

And here are the very basic thoughts:

So ... a emotor producing 14kW would theoretically pull 290 A @ 48 V

For every time period running at that rate A (Nt x Ra) we need to recharge with a rate B for another time period. (Mt x Rb)
E.g. 1 minute of 290 A motor ops needs 1 minute of 290 A charging ... or 290 minutes of 1 A charging .

So ... if I find a DC-DC 12V->48V charger lets say with 10A charging current on the 48V side it would take 29 minutes with a charging current of 10A to compensate for that, right?

And, since alternators nowadays are "not that simple" ... and since we need some smart features on the charging side ... I found THIS:

www.sterling-power-usa.com

Sterling Power USA

battery charger, marine battery charger, 12v marine battery charger, DC to DC battery charger, smart charger, bassboat charger, agm battery charger, DC to DC converter, sterling pro charge ultra, multistage charge while driving, pfc battery charger, sterling power, waterproof battery charger...
www.sterling-power-usa.com

(uuuhmmm ... ignore the price for now ... and the need to upgrade the alternator anyway...)

Although it says Battery-to-Battery it actually is a smart Alternator-To-Battery charger with some bells and whistles.
... and max in/out current is 70/17A ... which allows for a speedier recovery!
The ratio of consumption and charging periods for daily use are still something to determine ... but with OBDII logging recoding the time periods of TPS beyond lets say 70% (etc ... we could look at load request as well) in relation to the rest of the run time will give us meaningful insight!

Watching the video on the site I actually am a bit careful now with going beyond nominal 48V with my eBoost battery plan ... (anything beyond 48V nominal would need a "custom charger" if you really want "smartness" built in!)

Are my thoughts too simplified/flawed?
Are there simpler methods? What say you?
 
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Very interesting and your logic seems sound to me. And for what that charger does the price is not bad.

Next if look at Audi I would say they us a 48V system for a reason on their E-Charger as do Torq Amp.

Next there are such things as upgrade Alternators that produce more amps then stock if you stock unit is a bit wimpy. So an high amp Alternator in conjunction with a step charger like the one you have listed would be a great combination for faster recharge of the E-charger battery system. I say great find of i been looking at some simple setup chargers and cost about 1/3 of that and cheaper but non are close have close to the feature set as the one you listed. Great find.

My plans have them to stay around that 48V range also. And looking at my 3.6L 4-6 psi of boost is all i need to get to the power levels i looking for. No trying to build a drag strip killer just want a bit of extra power when want and/or need it. And building the E-Charger is still more affordable then the 7K supercharger they make for the GM 3.6L LLT and all it variations.
 
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SQCTS said:
Very interesting and your logic seems sound to me. And for what that charger does the price is not bad.

Next if look at Audi I would say they us a 48V system for a reason on their E-Charger as do Torq Amp.

Next there are such things as upgrade Alternators that produce more amps then stock if you stock unit is a bit wimpy. So an high amp Alternator in conjunction with a step charger like the one you have listed would be a great combination for faster recharge of the E-charger battery system. I say great find of i been looking at some simple setup chargers and cost about 1/3 of that and cheaper but non are close have close to the feature set as the one you listed. Great find.

My plans have them to stay around that 48V range also. And looking at my 3.6L 4-6 psi of boost is all i need to get to the power levels i looking for. No trying to build a drag strip killer just want a bit of extra power when want and/or need it. And building the E-Charger is still more affordable then the 7K supercharger they make for the GM 3.6L LLT and all it variations.
Click to expand...
yep ... digging in regards to alternator as well.
My 3.6 LFX is the same "truck setup" (accessories and intake manifold) as the 2015/2016 Chevy Colorado!

So I assume something like this will be good (overkill even) :
gpcaraudio.com

390 AMP CHEVROLET COLORADO HIGH OUTPUT ALTERNATOR

GP Car Audio is a manufacturer of many USA Made 🇺🇸 car audio products. We are also a distributor for several top Audio brands including Sundown Audio, XS Power, and Deaf Bonce.
gpcaraudio.com gpcaraudio.com
But obviously there are many options out there ... from 5.3 alt upgrades to even fake upgrades (just with smaller pulley) ... need to investigate a bit.


Just need to make sure I have no wimpy Holden setup here ...
 
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