More research is definitely called for - their notes include this: "Do
not use when the temperature is above 0C." :(
Cheers, Peter
On 4/9/17 8:47 PM, Marco Gaxiola wrote:
Ohh those pads looks nice..
Thanks for the advices, Yes, I think cooling the batteries in the
summer time won't be a big problem (compared to the Arizona's /
Sonora's wheater; excessive heat) Since I found the average
temperature there doesn't go avobe 25°C
my biggest concern was the idea of using the AC as a heat pump, but
you have clarified this, thanks!
Marco Gaxiola
On Sun, Apr 9, 2017 at 8:22 PM, Peter C. Thompson via EV
<[email protected] <mailto:[email protected]>> wrote:
You can also get heating pads designed for lead-acid batteries -
these tend to be rugged and acid proof.
Example:
https://www.amazon.com/dp/B000I8VL16/ref=wl_it_dp_o_pC_nS_ttl?_encoding=UTF8&colid=ECZS9XXRJF00&coliid=I1DAV5PWDDSP7T
<https://www.amazon.com/dp/B000I8VL16/ref=wl_it_dp_o_pC_nS_ttl?_encoding=UTF8&colid=ECZS9XXRJF00&coliid=I1DAV5PWDDSP7T>
Cheers, Peter
On 4/9/17 9:07 AM, ROBERT via EV wrote:
Why re-invent the wheel. I have some aircraft NICAD
batteries. They have a heating pad in each battery box and a
thermostat. Each battery box has a inlet and outlet for
forced air circulation. Just buy some of these heating pad.
________________________________
From: EV <[email protected]
<mailto:[email protected]>> on behalf of Cor van de
Water via EV <[email protected] <mailto:[email protected]>>
Sent: Saturday, April 8, 2017 6:29 PM
To: Marco Gaxiola; Electric Vehicle Discussion List; Jukka
Järvinen
Subject: Re: [EVDL] Electric compressor for EV+Battery heating
(heat pump)
Marco,
If you are concerned about battery temp in summer, then you
can always
Add a fan that pushes air into the box and an exhaust with
self-closing flap
At a high (warm) point that will let air out when the fan
pressurizes the box.
What others have found is that you try to balance the amount
of insulation
Such that the pack will stay warm enough long enough, but not
as much insulation
That it will overheat easily, so essentially you need to
estimate how much heat
You produce charging and driving and then size the insulation
value accordingly.
If this gives an unrealistic solution then active heating
(resistive typically on
Shore power only) and possibly active cooling (just blowing
ambient air through
The box, typically, no A/C for batteries please, we don't need
a new EV1.
Hope this clarifies,
Cor.
-----Original Message-----
From: EV [mailto:[email protected]
<mailto:[email protected]>] On Behalf Of Marco Gaxiola
via EV
Sent: Saturday, April 08, 2017 10:49 AM
To: Jukka Järvinen
Cc: Electric Vehicle Discussion List
Subject: Re: [EVDL] Electric compressor for EV+Battery heating
(heat pump)
Thanks for the reply...
its in Norway..
Thanks for the advice. We've been thinking on a heat pump
system, but not sure if it worths all the complexity of the
system to put in the vehicle considering heat is for sure
gonna to be used during winter, but what about summer time? do
they use the AC for colling in the summer?
Otherwise, just a resistive heating element would be the
simplest way to go?
Marco Gaxiola
energyev.com <http://energyev.com>
On Thu, Apr 6, 2017 at 12:56 PM, Jukka Järvinen
<[email protected] <mailto:[email protected]>>
wrote:
What do you consider 'a very cold area in north europe"?
Easy advice for batteries:
Insulation, insulation, insulation.
:)
For cabin one can direct charger cooling fan to circulate
air over night.
Most important is to keep moist out as people tend to
cloth themselves
during beach weather (-10C) and when it's actually cold
(-35C and below).
It is pretty unconfortable if cabin is too warm (>+18C).
-Jukka
to 6. huhtikuuta 2017 klo 22.42 Marco Gaxiola via EV
<[email protected] <mailto:[email protected]>>
kirjoitti:
I'm helping a friend to design a conversion
battery pack for a
very cold area in north europe and was wondering if
someone here has
used an electric AC unit as a heat pump, either for
heating up and
comfort of the passengers on board, as well; and most
important; to
keep the battery pack warm enough on blow freezing
temperatures.
Marco Gaxiola
energyev.com <http://energyev.com>
-------------- next part -------------- An HTML
attachment was
scrubbed...
URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/
<http://lists.evdl.org/private.cgi/ev-evdl.org/>
attachments/20170406/51844c9c/attachment.htm>
_______________________________________________
UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
<http://www.evdl.org/help/index.html#usub>
http://lists.evdl.org/listinfo.cgi/ev-evdl.org
<http://lists.evdl.org/listinfo.cgi/ev-evdl.org>
Read EVAngel's EV News at http://evdl.org/evln/ Please
discuss EV
drag racing at NEDRA (http://groups.yahoo.com/
group/NEDRA)
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20170408/5f4adc27/attachment.htm
<http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20170408/5f4adc27/attachment.htm>>
_______________________________________________
UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
<http://www.evdl.org/help/index.html#usub>
http://lists.evdl.org/listinfo.cgi/ev-evdl.org
<http://lists.evdl.org/listinfo.cgi/ev-evdl.org>
Read EVAngel's EV News at http://evdl.org/evln/ Please discuss
EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA
<http://groups.yahoo.com/group/NEDRA>)
_______________________________________________
UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
<http://www.evdl.org/help/index.html#usub>
http://lists.evdl.org/listinfo.cgi/ev-evdl.org
<http://lists.evdl.org/listinfo.cgi/ev-evdl.org>
Read EVAngel's EV News at http://evdl.org/evln/
Please discuss EV drag racing at NEDRA
(http://groups.yahoo.com/group/NEDRA
<http://groups.yahoo.com/group/NEDRA>)
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20170409/2f1eddcd/attachment.htm
<http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20170409/2f1eddcd/attachment.htm>>
_______________________________________________
UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
<http://www.evdl.org/help/index.html#usub>
http://lists.evdl.org/listinfo.cgi/ev-evdl.org
<http://lists.evdl.org/listinfo.cgi/ev-evdl.org>
Read EVAngel's EV News at http://evdl.org/evln/
Please discuss EV drag racing at NEDRA
(http://groups.yahoo.com/group/NEDRA
<http://groups.yahoo.com/group/NEDRA>)
_______________________________________________
UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
<http://www.evdl.org/help/index.html#usub>
http://lists.evdl.org/listinfo.cgi/ev-evdl.org
<http://lists.evdl.org/listinfo.cgi/ev-evdl.org>
Read EVAngel's EV News at http://evdl.org/evln/
Please discuss EV drag racing at NEDRA
(http://groups.yahoo.com/group/NEDRA
<http://groups.yahoo.com/group/NEDRA>)
_______________________________________________
UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
http://lists.evdl.org/listinfo.cgi/ev-evdl.org
Read EVAngel's EV News at http://evdl.org/evln/
Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
