Thursday, September 18, 2008

Haze batteries

Gel battery - 100Ahr for $380

http://www.solaronline.com.au/cgi/index.cgi/shopfront/view_product_details?category_id=1107143916&product_id=1107445200

Concorde Batteries

seem to have a good reputation in the us - $530 for 100Ahr
http://www.solaronline.com.au/cgi/index.cgi/shopfront/view_product_details?category_id=1107143916&product_id=1107358634

Battery monitoring/ balancing decisions

Time to make some decisions - there is too much info out there to digest it all!

I think that this paragraph was a bit of a revalation for me and cleared up what I had been starting to think

You want to watch the voltage under driving load, and not let them fall
below 10.5v per module (~136v for your pack of 13). Better would be to
monitor each individual module, and stop when any one of them falls below
10.5v.

To start with, if I am using 6 chargers, then I can just monitor each of the batteries (or sets of two batteries in parallel) and ensure that none goes below 10.5V.

If I do start to get problems, then I can consider some form of battery balancing then.

As for the parallel situation, I think that it would be good if I can avoid it but that may not be possible.

options for monitoring battereis seem to be the paktrakr or the dallas one wire chip

battery selection

from EVDL
http://www.nabble.com/Now-I%27m-really-spooked-about-batteries-to12534767ef25542.html#a12535553


It is best to select you batteries your self from a dealer. They normally
get in 50 batteries to a pellet, so I select the best 30 that was all
balance in with of a voltage of 0.001 volt of each other. If you see any
dark positive posts, do not select that one, because this is a sign of a
post seal leak.

I like a battery where the tops have a built in sluts for a carrying handle
and also the top is about 1/4 wider the body of the battery. This allows
for air ventilation around the batteries while the tops may be tight
together. I also space the perimeter of the battery pack from the battery
box for air inlet and exhaust.

Evision

this would be worth getting some ideas from - info on victor's evision is somewhere in this post
http://www.mail-archive.com/ev@listproc.sjsu.edu/msg07997.html

other batteries to consider

as suggested on EVDL
http://www.nabble.com/Now-I%27m-really-spooked-about-batteries-to12534767ef25542.html#a12535553

Orbitals
Hawkers
Concordes.
Deka

multiple ADC and serial databus

this should be the goal

here is one persons take - I think that they should use the dallas one wire chip.

http://www.evdl.org/archive/index.html#nabble-to19194075|a19194075

Zener Regulators for battery balancing

here is a post on the topic
http://www.nabble.com/Zener-Regulators-to15268525ef25542.html#a15273145

not sure i understand how well this will work - here is a doc on dodgy brothers
http://home.gci.net/~saintbernard/Zener_Regs.pdf

PowerCheq

these seem to be worth looking into - not quite sure what they do
http://www.evdeals.com/PowerCheq.htm

Rudman Regulator

seems only relevant for charging - I should be able to avoid by using 6 12V chargers
http://www.manzanitamicro.com/mk3reg.htm

Lee Hart/TMSI Battery Balancer kit

This looks pretty good - made for SLA

http://www.geocities.com/sorefeets/balancerland/index.htm

Wednesday, September 17, 2008

Panasonic Batteries

Panasonic batteries - $250 for 65Ahr

http://www.globebatteries.com.au/catalogue/LC-X1265P-Panasonic-12V-65000mAh-SLA-p-21543.html

or $370 for 100Ahr

http://www.globebatteries.com.au/catalogue/LC-XA12100P-Panasonic-12V-100-000mAh-SLA-Battery-p-21544.html

Delcor batteries

I should look into these - $230 for 80Ahr

http://www.batteriesplus.com.au/pd/554/239/delkor-dc27/


$260 for 100Ahr
http://www.batteriesplus.com.au/pd/1145/239/delkor-dc31-deep-cycle-battery/

first start AGM batteries

150ahr for $530, 100Ahr for $430

http://www.firststartbatteries.com.au/battery-range.html

Fullriver batteries

I need to copy the stuff from lower down to just have one battery type per post

fullriver 120ahr for $445
http://www.dynamicsolarsolutions.com.au/catalogue/batteriespg3.html


150ahr for $560
http://www.energymatters.com.au/fullriver-sealed-lead-acid-agm-battery-12volt-150ah-dc-p-135.html


150ahr for $298 - auction closed
http://www.secondhandsolar.com/product_desc.php?id=191

Powersonic batteries

here is the spec sheet

http://www.power-sonic.com.au/pds/20080121-AU_DCG12100.pdf

discussed on evdl
http://www.nabble.com/PowerSonic-AGM-batteries%2C-any-thoughts-to17745425ef25542.html#a17745425

used by the ute in this conversion
http://www.thebackshed.com/Windmill/FORUM1/forum_posts.asp?TID=384&PN=1


$385 australian
http://www.dynamicsolarsolutions.com.au/catalogue/batteriespg3.html

Paralleleing batteries

I need to sort out if this is a good idea

from this post
http://www.evdl.org/archive/index.html

Please consider going with one string. Paralleling causes problems all
around. Your battery life would greatly increase. At least have a
contactor bank so that you can use only one string at a time. Each
string should be charged independently and have it's own SOC meter,
too.


Here is another EVDL post about paralleling batteries
seems that discharging is okay but charging may cause problems

http://www.nabble.com/Paralleling-batteries-in-high-current-environments-td18160663ef25542.html#a18167307

Battery management

Here is a specific forum - really releated to lithium but may be useful in the future - I have joined the forum

http://autos.groups.yahoo.com/group/EVBMS/


more relevant to SLA

http://www.nabble.com/AGM-batteries-and-a-charger-question-to16366509ef25542.html#a16366509

I don't know if you want to say "need" a BMS, but folks who use a BMS with
their AGMs typically get about twice the lifespan out of them.

You can try searching the archives for "Battery Balancer". That's what
they called the most common type of BMS used with Lead-Acid batteries.

sla battery summaries

this is a good summary of battery and charging issues

http://www.evdl.org/archive/index.html#nabble-p18749428

here is a good selection summary
http://www.cameronsoftware.com/ev/EV_BatterySelection.html

Tuesday, September 16, 2008

Genesis batteries

Byron said genesis batteries were the only way to go

they are A$260 for 65Ahr here
http://www.planetarypower.com.au/solar_batteries.htm#genesis

or $320 for 65Arh here
http://www.batterydoctor.com.au/store/view_product.php?product=NP65-12

or $230 for 55Ahr here
http://www.batterydoctor.com.au/store/view_product.php?product=NP55-12

this is the info on the big brother to what we have in the mira
http://www.master-instruments.com.au/products/55454/G12V70AH10EP.html

Henda SLAs

AC motor from AEVA is using Henda batteries

here is a source of a 120Ahr - $400each for more than 4 -
http://www.altronics.com.au/index.asp?area=item&id=S5130

or the 65ahr version - $195 for more than 5
http://www.altronics.com.au/index.asp?area=item&id=S5114

best check who is using these on evalbum

henda and toyo seem to be the same mob - here is the spec sheet for the 120Ahr version
http://www.hendatoyo.com.cn/product/UploadFiles/200481611162591.pdf

Contactors

I cannot find any 24V contactors reasonably priced

Allbright SW180/200 24V or equivalent (LEV200)

http://www.evsource.com/datasheets/tyco/LEV200_ds_9-1773439-1.pdf


here is a supplier in australia - no prices though!
http://www.bridex.com.au/albright_product_range_3.htm


Beebs is the same mob as electricvehicleusa

this needs considering - $35usd
http://www.beepscom.com/product_p/ct-sw180-rcf.htm

$140 usd
http://www.beepscom.com/product_p/ct-sw200-390.htm

$130usd
http://www.beepscom.com/product_p/ct-zljm-400-24.htm

$100usd
http://www.beepscom.com/product_p/ct-zljm-200-24.htm

Electric vehicle usa

http://www.electricvehiclesusa.com/aboutus.asp

they have the contactors I need but quote $60 us shipping!

EV source link

http://www.evsource.com/top_line_shop.php

1 wire protocol - battery monitioring

connecting to pic
http://www.maxim-ic.com/appnotes.cfm/an_pk/2420

the sensor
http://www.maxim-ic.com/quick_view2.cfm?qv_pk=2919

working with sla batteries

http://individual.utoronto.ca/janzen/electronics/tutorials/battery/sla_working_with.html

other battery sources

on ebay - same as other supplier of fullriver

http://stores.ebay.com.au/ALL-PURPOSE-BATTERIES-ONLINE_W0QQcolZ2QQdirZQ2d1QQfsubZQ2d33QQftidZ2QQtZkm

battery monitoring

I should have individual battery monitoring

this looks okay but a but bulky. I would like a 1 wire protocol or something similar

http://www.evconvert.com/article/led-bargraph-battery-monitor


from one of the comments on that page

Another option I’ve been mulling over is an Arduino-based battery monitor. I’m not really a hardware guy, and barely a programmer, but from what I’ve read of this open source platform, it shouldn’t be horribly difficult to build a 6-battery monitor (the board has 6 analog inputs) that can send live data to a laptop: arduino.cc

I may just look into this as a winter project. The pre-assembled board is about $30 US.

or another comment from that article

If your in Astralia DSE have a this in kit form for about AU$9 each.

http://www.dse.com.au/cgi-bin/dse.storefront/482e8bd1040477a8273fc0a87f9c06f3/Product/View/K4611

or check out the PakTrakr - whatever that is
http://www.paktrakr.com/Shopping.html

or a circuit based on the MAX8211
http://www.maxim-ic.com/quick_view2.cfm/qv_pk/1273


or how about this?
http://www.futurlec.com/CarBatteryMonitor.shtml


or this
http://www.electronics-lab.com/projects/automotive/009/index.html

or this
http://www.uoguelph.ca/~antoon/circ/batmon12.htm

Enclosures

This is a great source of enclosures

https://www.soanarplus.com/getProductWebDetails.do?prodId=HB6132

multiple battery chargers

As it looks like the zivan NG1 may be getting closer to US$600 - A$720, I think that I should consider using multiple battery chargers as explained in

http://www.aeva.asn.au/forums/forum_posts.asp?TID=339


Here are 12V 12A chargers for $53 - 6 of them is about half the cost with more power.

https://www.soanarplus.com/getProductWebDetails.do?prodId=MB3612

or 16A for $92
https://www.soanarplus.com/getProductWebDetails.do?prodId=MB3620

or 3 x 24V at 6A - maybe not quite enough current
https://www.soanarplus.com/getProductWebDetails.do?prodId=MB3614

Monday, September 15, 2008

Sunday, September 14, 2008

Battery testing

This mob in the link are making a ev battery tester - we should too!

http://www.arbin.co.kr/Download/products/EVTS.pdf

this is a little more what I was thinking

http://a4x4kiwi.blogspot.com/2008/06/long-awaited-20ah-greensaver-test.html

battery calcuations

2kwhr/100km for every L/100km the car used

http://www.aeva.asn.au/forums/forum_posts.asp?TID=584

For the bubble at about 8L/100km, that would be 160whr/km - close to the 150whr that I have been using.