[ausev] Battery Source in Austin

[Chris Robison]

The central BMS is still very much in development, so what it will 
provide is not entirely clear and may in fact still be somewhat open to 
suggestion. It will accept SMBus communication from each of the module 
boards ("MCMs" aka "Monitoring and Control Modules", not a great name) 
and provide a single output data stream with CAN. What other outputs it 
will provide (perhaps for controlling a contactor or basic instrument 
panel lights, etc) is not yet established.

Currently, all that exist are the MCMs themselves, and these only in a 
prototype state. Release of the "official" product is imminent however.  
They support up to 4 series cells (of an arbitrary parallel count), 
provide cell-to-cell balancing within the module, and individual cell 
voltage measurements. They also have hookups for up to two temperature 
probes. I've had one of the prototypes in my hands; they're pleasantly 
small. A little larger than a playing card.

  --chris




Ian Ward wrote:
> Aaron, can you elaborate on what else the BMS will offer beyond cell 
> balancing?
>
> Thanks,
> ian
>
> On Wed, Jun 4, 2008 at 6:54 AM, Aaron Choate <achoate at gmail.com 
> <mailto:achoate at gmail.com>> wrote:
>
>     Keep in mind the BMS is something that is still under
>     development.  They do have their cell balancing "MMS" designed
>     though and should be delivering us a set of modules in the next
>     month or so for the Mazda 3 project.
>
>     Cheers,
>
>     Aaron Choate
>
>     On Tue, Jun 3, 2008 at 6:39 PM, Ian Ward <ian.ward at gmail.com
>     <mailto:ian.ward at gmail.com>> wrote:
>
>         Chris said they offer them with or without BMS.
>
>
>         On Tue, Jun 3, 2008 at 5:07 PM, Marc Kohler
>         <mkohler at austin.rr.com <mailto:mkohler at austin.rr.com>> wrote:
>
>             Do you know if K2 offer modules with BMS or simply cells?
>
>             MK
>
>              
>
>             *From:* ausev-bounces at austinev.org
>             <mailto:ausev-bounces at austinev.org>
>             [mailto:ausev-bounces at austinev.org
>             <mailto:ausev-bounces at austinev.org>] *On Behalf Of *Ian Ward
>             *Sent:* Tuesday, June 03, 2008 5:06 PM
>
>             *To:* AustinEV News Announcements and General Discussion
>             *Subject:* Re: [ausev] Battery Source in Austin
>
>              
>
>             Revolt is getting very good pricing on K2 LiFePO4
>             batteries and is so far excited about the company and
>             performance.
>
>             - ian
>
>             On Tue, Jun 3, 2008 at 5:04 PM, Ian Ward
>             <ian.ward at gmail.com <mailto:ian.ward at gmail.com>> wrote:
>
>             I last called a couple of months ago and they were pricing
>             them as direct replacements for the XP line at the same price:
>
>             XP UEV $1935
>             XP U1  $860
>             XP U24 $2024
>             XP U27 $2480
>
>             - ian
>
>              
>
>             On Tue, Jun 3, 2008 at 4:54 PM, Chris
>             <crynosys at grandecom.net <mailto:crynosys at grandecom.net>>
>             wrote:
>
>
>             Does anyone have a price list for their Epoch product line?
>
>
>
>             Gil Dawson wrote:
>             > If you want to go with Lithium, Valence is headquartered
>             in Austin:
>             >
>             >     http://www.valence.com/products/ucharge_overview.html
>             >
>             >
>
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