I am late to this discussion and have little to add, but this called me to
comment:
"I did a bit of research. Some authors talk about "intercalation", which
happens below freezing. Intercalation is when the anode becomes plated with
lithium ions instead of the ions being absorbed into the anode."
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I have 16 (well now 15 as one died) Calb 60 AH cells in my motorcycle.
http://evalbum.com/497
I bought the cells from a local source, but they are not too hard to come by,
at least they were not last time I was in the market.
Damon
From: EV on behalf of Matthe
electric-vehicle-discussion-list.413529.n4.nabble.com/
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> Please discu
> Ok, then why don't battery heaters - which I thought the Bolt & Tesla
> have - give a good winter range ?
Because there is a balance temperature point above which you are burning
more kW just warming up the battery than you get in better range for the
same kWh.. In either case range in winter i
Ok, case closed !
Thanks everyone for your input.
Peri
-- Original Message --
From: "Lee Hart"
To: "Peri Hartman" ; "Electric Vehicle Discussion
List"
Sent: 10-Sep-19 2:19:14 PM
Subject: Re: [EVDL] li ion battery in cold weather
Peri Hartman via EV wrote:
I'm really surprised the "
gt;>https://spectrum.ieee.org/energywise/green-tech/fuel-cells/lithium-additives
>>>>
>>>>Obviously, the other major factors are cabin heat and defrost.
>>>>
>>>>Peri
>>>>
>>>>__
Peri Hartman via EV wrote:
I'm really surprised the "balance" is so poor... My guess is that there's
virtually no insulation and the manufacturers are skimping because it won't
matter so much to the current buyers.
I think that is exactly it. Also, the big automakers have so little
experience
I'm really surprised the "balance" is so poor. If the battery has
reasonable insulation, how much power would it take to keep it warm -
e.g. 50F - for, say 8 hours ? Let's say the outside temp is 0F average.
I don't expect anyone to do calculations. But Lee gives an approx metric
of 30-40 mile
Peri Hartman via EV wrote:
In other words, when cold, the voltage drops below the safe minimum
rated value ? But if warmed up, the voltage rises enough to use the cell
longer ?
Yes. You've got it!
Ok, then why don't battery heaters - which I thought the Bolt & Tesla
have - give a good winter
Below, please.
-- Original Message --
From: "Lee Hart"
To: "Peri Hartman" ; "Electric Vehicle Discussion
List"
Sent: 10-Sep-19 11:18:12 AM
Subject: Re: [EVDL] li ion battery in cold weather
Peri Hartman via EV wrote:
So the correct conclusion would be, for those cars which have poo
Peri Hartman via EV wrote:
So the correct conclusion would be, for those cars which have poor
winter range, that the cell internal resistance is too low to heat the
cell ?
Yes; too little self-heating to be useful.
Also, that the cell voltage is lower during cold temps (while under
load), res
Thanks.
So the correct conclusion would be, for those cars which have poor
winter range, that the cell internal resistance is too low to heat the
cell ?
Also, that the cell voltage is lower during cold temps (while under
load), resulting in less Wh ?
Peri
-- Original Message --
Fr
Peri Hartman via EV wrote:
Ok, so the correct assumption would be that the Leaf and Bolt cells
don't have enough internal resistance, thus the performance stays poor
in cold weather ?
Let me try to simplify it. There are huge differences between the
various types of lithium cell constructions
Peri Hartman via EV wrote:
Understand. Well mostly: I didn't lookup Arrhenius.
But my question still remains. What is the electrical result when the
reaction is slower. I am presuming there is a lower voltage across the
cell. And, if that's so, more current must come from the battery to
provide
Ok, so the correct assumption would be that the Leaf and Bolt cells
don't have enough internal resistance, thus the performance stays poor
in cold weather ?
-- Original Message --
From: "Paul Compton via EV"
To: "Peri Hartman via EV"
Cc: "Paul Compton"
Sent: 10-Sep-19 8:15:39 AM
Subj
[ref
http://electric-vehicle-discussion-list.413529.n4.nabble.com/EVLN-Rivian-e-truck-Testing-ar-tierra-del-fuego-v-tp4694967p4694981.html
(Paul's post)
]
https://lonerider-motorcycle.com/blogs/loneriderblog/ewan-mcgregor-and-charley-boormans-long-way-up-will-be-on-electric-motorcycles?fbclid=I
On Tue, 10 Sep 2019 at 15:52, Peri Hartman via EV wrote:
> And if it's correct, then the cell's internal resistance must come into
> play. Is it simply not significant enough to warm up the cell ?
It can be enough to warm the cell. The original Thundersky cells had
quite high internal resistance
Lawrence is right,
several listed on evalbum.com are the FMC production Ranger EVs
https://www.google.com/search?q="evalbum.com"+Ford+Ranger
Ford Ranger EVs
https://www.google.com/search?site=evalbum.com&q=ford+electric+ranger
EV-history: I was at the SoCal (aqmd.gov) air quality management dis
l#usub
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