[Oeva-list] Upgrade to NiMH & Last Call Lee Hart Battery balancer mail thread
Theoldcars at aol.com
Theoldcars at aol.com
Sun Apr 29 12:51:05 PDT 2007
Do you know what you want? You need to contact Lee quickly.
About NiMH batteries.
This applies to EVs with one enclosed battery box or with duct work maybe
two separate boxes.
In my shop I have a Ranger with pack out. I starting looking at options to
upgrade to NiMH batteries. This Balancer would be a part of the system. I
figured out how it could be done. I have estimated cost for a 24 battery 316 volt
system would be around 10,000 give or take a 1000 dollars. Maybe less if we
get some of the knowledgeable people involved in our EV community. The major
components would consist of an AC unit, Ovonics batteries, A NiMH charger
and Lee's balancer.
In a message dated 4/29/2007 12:48:12 AM Pacific Daylight Time,
mbayazit at onebox.com writes:
Is it too late to get in on this? I had some delays, but would like to
get in if it's possible.
From: _theoldcars at aol.the_ (mailto:theoldcars at aol.com)
Sent: Sat, 21 Apr 2007 01:31:59 EDT
To: _ranger-ev at yahoogrouranger_ (mailto:ranger-ev at yahoogroups.com)
Subject: Re: [ranger-ev] Last Call Lee Hart Battery balancer mail thread
Most of the Rangers are on in use now. This balancer system would work way
better than the Ranger BMS. What did you do to get yours going?
Below is an email from Lee that covers some of your questions. This balancer
order has taken a long time to happen. I would not count on another anytime
First, I want to thank you for your interest in my Battery Balancer.
And, to thank you for your patience in getting this order together. It's
taken a long time!
I have enough orders at this point to order the Relay boards. The price
will be $49 for a bare board, $145 for a kit (the board and all parts),
or $195 for an assembled and tested board. All boards will of course
come with full documentation.
I don't know the quantities yet for the Control board, so the prices are
still approximate. My guess is that it will range from $75 for a bare
board, to $500 maximum for a fully populated board with BASIC Stamp and
on-board Vicor DC/DC.
Please email me with your order for Relay boards; how many, and what
option (bare board, kit, or assembled). I plan to order boards based on
the quantities confirmed by next Friday, April 27.
As always, please email me with any questions!
In a message dated 4/20/2007 5:56:24 PM Pacific Daylight Time,
_mbayazit at onebox.mba_ (mailto:mbayazit at onebox.com) writes:
I live in California and have 3 1998 Pb-A Ranger EVs.&nbsp; I spoken
you a few times, more than a year ago, when your
still waiting to see which direction people were &nbsp; Now you're
Are you using one of these balancer setups in any of your many Ranger
EVs?&nbsp;&nbsp; Are any of your five Ranger EVs going
now?&nbsp; Other interesting
I am interested in the balancer, but was wondering what you think the price
of the boards/kits/of the boards/kits/<WBR>I am inte&nbsp; Have you had
commitments from people so you can project the volume you expect, and thus
an estimate of cost?&nbsp; I realize that would be somewhat unlikely.
Let me know how things are going,
From: __theoldcars at _theold_ (mailto:_theoldcars at aol.the) _
(mailto:_theoldcars at aol.the_ (mailto:theoldcars at aol.com) )
Sent: Thu, 19 Apr 2007 03:04:56 EDT
To: __ev at listproc._e_ (mailto:_ev at listproc.ev) @listp_
(mailto:_ev at listproc.ev@listp_ (mailto:ev at listproc.sjsu.edu) )
;__pwallace at ichips._pwallac_ (mailto:_pwallace at ichips.pwallace) @_
(mailto:_pwallace at ichips.pwallace@_ (mailto:pwallace at ichips.intel.com) )
;__jrab at e-m-w._jr_ (mailto:_jrab at e-m-w.com) _
(mailto:_jrab at e-m-w.com_ (mailto:jrab at e-m-w.com) )
;__gary.graunke at _gary.gra_ (mailto:_gary.graunke at gary.grau) _ (mailto:_gary.graunke at gary.grau_
(mailto:gary.graunke at intel.com) )
;_steveclunn@;_steveclunn@<WBR>bells_steveclunn at bellsoutsteve_
(mailto:steveclunn at bellsouth.net) ) ;_electrabishi@) ;_
(mailto:_electrabishi at electr_ (mailto:electrabishi at ak.net) )
;__jburke1 at carolina._jburk_ (mailto:_jburke1 at carolina.jburke) _
(mailto:_jburke1 at carolina.jburke_ (mailto:jburke1 at carolina.rr.com) )
;_Southtownelanes@) ;_Southtown_Southtownelanes at Southto_
(mailto:Southtownelanes at msn.com) )
Cc: __leeahart at earthlink_lee_ (mailto:_leeahart at earthlink.lee) _
(mailto:_leeahart at earthlink.lee_ (mailto:leeahart at earthlink.net) )
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;_solectria_) ;_solec) ;
(mailto:_solectria_ev at solectria_evsol_ (mailto:solectria_ev at yahoogroups.com)
) ;_ranger-ev@) ;_ranger-ev@<WBR>ya_ranger-ev at yahoogrouranger_
(mailto:ranger-ev at yahoogroups.com) )
Subject: [ranger-ev] Last Call Lee Hart Battery balancer mail thread
We have gone one month and it is time to now to place the order. I have sent
this on to any groups that I thought would be interested.
Anyone wanting to review here is the link and past emails are below.
(http://www.geocities.com/sorefeets/balancerland/) ) )
Lee has asked for an email describing what you want below in Green.
I have sent this to everyone who has responded. In case I missed anyone I
included the EV list. I am also going to send this on to some other list
this balancer would really help with.
1. Question below by Paul can we add temperature probes?
2. In a prior email in red below Lee brought up saving manufacturing cost.
The above one and two going different directions. I would be for spending
the extra money for more options. I have little doubt in a short time we
working with lithium batteries. Heat is a critical factor with them as well
as other battery technologies. The savings I am for is producing more so
cost is reduced.
Please respond to all to keep everyone informed.
In a message dated 3/14/2007 1:11:15 PM Pacific Daylight Time,
__paul.wallace at _paul.wal_ (mailto:_paul.wallace at paul.wall) _
(mailto:_paul.wallace at paul.wall_ (mailto:paul.wallace at intel.com) ) writes:
The design as it stands doesn't have enough temperature probe ports for
NiMh. I think that we need one probe per battery. It is probably
possible to add a multiplexer for multiple temperature probes and let
the stamp select them at the same time it is selecting the battery it is
going to measure voltage on.
&gt; Specifically, the old control board used an external digital
&gt; with isolated RS-232 output to measure battery voltage and current.
&gt; cost $50-$100. I'm experimenting with a cheaper on-board circuit to
&gt; this (since everyone is obsessed with cost).
Yes, there's an order in the works. I'm trying to work out the final
details, and figure out how many to order, and what features people
want/need. Stay tuned!
What would help is if interested parties send me an email describing
what they want;
1. Bare boards only (with schematics and parts lists)
2. Parts kits (boards with parts, which you assemble yourself)
3. Assembled boards (which you just need to be put into a box)
On the software side, I don't have the time/resources to supply more
than a demo program (what I'm using for my own EV). You will need to
change the program to suit your battery pack (number of batteries,
voltage per battery), the balancing method you want to use (if different
from mine), and other auxiliary functions (like temperature measurement,
charger control, fan control, heater control, etc.) So, I would suggest
that you buy your own BASIC Stamp with its development kit, so you can
make these changes.
Time: This is a side project for me. I have a backlog of other contracts
ahead of this one that I need to finish first, so delivery is probably
going to be 2-3 months.
Note: Just saying you want one won't make it so. Serious orders only!
It's too expensive a project for me to order all the parts on the CHANCE
that you MIGHT buy it. Once I know how many we need, then I can quote a
price. When folks pay for it, I place the orders.
Ring the bells that still can ring
Forget the perfect offering
There is a crack in everything
That's how the light gets in -- Leonard Cohen
************************************** See what's free at http://www.aol.com.
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