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TickTock
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Re: What is a "Gid"?

Wed Feb 08, 2012 5:05 am

Ingineer wrote:I don't have one of Gary's meters, but I'm reasonably sure that what Gary found on the CAN bus is not the SOC, it's watt-hours / 80. So if you multiply "Gids" * 80, you get the true capacity in watt hours, or you can multiply by .08 and get kWh.

I typically see a full charge stop at 94-95% true SOC. My last charge to "100%" was actually to 94.591% SOC, and 22240 watt-hours, which is 271 "Gids".

Just so you guys all know!

-Phil
I can confirm that. I got 79.0 average kw/gid on one charge and 83.4 on another as measured going into the battery. Below is a plot of the energy per gid for two separate 100% charges. There is a lot of noise but the average value matches yours. Was the 22240 from the wall or into the battery?

Image

Herm
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Re: What is a "Gid"?

Wed Feb 08, 2012 5:16 am

a wh meter would give you consistent range estimates (all else being equal) and be linear, but apparently the GID meter is not linear.. IIRC

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TickTock
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Re: What is a "Gid"?

Wed Feb 08, 2012 5:56 am

There is some non-linearity, true, but it's still a lot better than the 12 bars on the dash. The graph below shows the non-linearity better, I think. I plotted the energy into the battery versus time and gids vs time during the same 100% charge. You can see that the energy into the battery is a very linear constant rate (as expected), but the gids do vary a little - particularly at the low end. Note there are two separate Y axis (charge in kwh on right and gids on the left), so don't read anything into the separation at the end of the charge cycle.

Image

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TonyWilliams
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Re: What is a "Gid"?

Wed Feb 08, 2012 9:24 am

Has anybody yet found the battery temperature raw data?

chris1howell
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Re: What is a "Gid"?

Wed Feb 08, 2012 11:20 am

I think the interesting question here for Ingineer is how did you know your SOC was 94.591%...?
My last charge to "100%" was actually to 94.591% SOC
I typically see a full charge stop at 94-95% true SOC
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Ingineer
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Re: What is a "Gid"?

Wed Feb 08, 2012 12:19 pm

Both these figures are obtained directly from the battery ECU in the car, and there are no calculations done on my part. Sorry, but I can't give any more technical details out at this time. But I will say something's exciting on the horizon!

-Phil
Easily Learn Electricity HERE! - - - - Website: http://evseupgrade.com/[/size] - - - - Like us on Facebook: EVSE Upgrade

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TomT
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Re: What is a "Gid"?

Wed Feb 08, 2012 1:28 pm

I hope this is more concrete than the LED headlight DRL mod that was bantered about some time ago and than mysteriously disappeared from discussion... :lol:
Ingineer wrote:Both these figures are obtained directly from the battery ECU in the car, and there are no calculations done on my part. Sorry, but I can't give any more technical details out at this time. But I will say something's exciting on the horizon!

-Phil
Leaf SL 2011 to 2016, Volt Premier 2016 to 2019, and now:
2019 Model 3; LR, RWD, FSD, 19" Sport Wheels, silver/black; built 3/17/19, delivered 3/29/19.

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Ingineer
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Re: What is a "Gid"?

Wed Feb 08, 2012 2:13 pm

TomT wrote:I hope this is more concrete than the LED headlight DRL mod that was bantered about some time ago and than mysteriously disappeared from discussion...
It did not "mysteriously disappear". If you read fully you will see that posted that I don't have a schematic available for the DRL mod, nor will I provide one because of the extent of modifications needed in crictical areas of the Leaf's systems. I provided information on how to perform the VSP mod, and several people have already caused problems with their car. I will not release information that will encourage people to do anything to their cars that could be harmful. Period.

Poking me like this is not the best way to encourage me to share anything in the future. I want to help the Leaf (and greater EV) community as much as I can, but it's not possible to give everything people ask. I get many emails a day asking for help, opinions, custom work, etc. Just not possible!

-Phil
Easily Learn Electricity HERE! - - - - Website: http://evseupgrade.com/[/size] - - - - Like us on Facebook: EVSE Upgrade

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Nubo
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Re: What is a "Gid"?

Wed Feb 08, 2012 2:16 pm

Curious what would behoove them to settle on 80Wh as a unit. Is there some other whole (or decimal) unit of energy that would be the equivalent?
I noticed you're still working with polymers.

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TomT
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Re: What is a "Gid"?

Wed Feb 08, 2012 2:48 pm

Well, since EVDriver was going on and on about it, the logical assumption was that it must have been released in some form and would therefore be forthcoming... Sorry, if the intent was misunderstood!
Ingineer wrote:If you read fully you will see that posted that I don't have a schematic available for the DRL mod, nor will I provide one because of the extent of modifications needed in crictical areas of the Leaf's systems.
Leaf SL 2011 to 2016, Volt Premier 2016 to 2019, and now:
2019 Model 3; LR, RWD, FSD, 19" Sport Wheels, silver/black; built 3/17/19, delivered 3/29/19.

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