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Meldinger - BauDemo

#676
Boogie - I am sorry, but it looks like the application will not work for you in it's current form. As I suspected Nokia E51 and some other Nokia models require the application to be quality tested and signed by a 3rd party company. This process takes time and costs $$. According to the info I got there is no other way to fetch the cellid.
I have couple of ideas, but it will take time. And I will need to borrow one such phone from a friend.
If you have another phone - you are welcome to test. It looks like the SonyEricsson phones work quite well. I also tested it on a HTC windows mobile phone.

Elmo - I am aggregating data from several different sources. The data is not exactly accurate, but it works most of the time. Does it work for you?
#677
More info - I checked and it looks like Nokia E51 requires that my application is signed either by nokia or the mobile operator in order to get access to the cellid. I will do some more research and post here.
#678
Elmo - this message has nothing to do with operator positioning services.
<technical>
The program uses cellid and does not use any operator specific solutions. I've seen the message that Boogie gets, and it simply means that the cellid his phone is sending to www.uppladdning.nu can not be identified right now.
The problem is the relatively limited set of cellid's known to the server.
Usually a change in the cell id (by walking or driving 10 to 400m down the road) will result in better location.
</technical>
#679
Ken - you've got mail! :)
Boogie - "unable to identify location" can be that the particular cell your phone was connected to does not have "known" position. I will check tonight.
You can also check again when you are walking, or when you change your location.
There should not be any problem running Nokia E51.
I will let you know after I double check.
Thanks again!
#680
Yes, the distance shown is the calculated straight line distance between the cell phone tower and the charging site. This means that the results are not super accurate, but they should be good for distances larger then kilometer.

The "charger finder" purpose is that if you were in another town and trying to find alternative charging station then the one you planned to use (because it is busy or broken), you can start the application and see if there are any station nearby and approximately how close they are.

I definitely need to work on the wording and presentation in the mobile app.
Any comments are well appreciated!
Thanks again Ken!
#681
I have fixed a small bug - the charging site you were missing should be visible now.
I find only 3 charging sites defined in Kristiansand, 1 at Skibåsen, and 1 at Arendal. That makes it total of 5 charging sites that should be visible by you through the Charger Finder program.
Is this what you are seeing?
If there were more then 10 charging sites in 100km radius around you then you would have seen a list of only the 10 closest charging sites.

I checked the specification for the sgh-m310 and it should work. Did you try downloading from the "Download Charger Finder for J2ME - SonyEricsson, some Nokias" link on the main page (www.puru.nu/m/main.aspx)?

I will test tomorrow with some different phones.
Thanks again!
#682
Thanks Ken! Glad you liked it.
I am sorry about the 100km - I understand that this can be misleading... The program always shows maximum 10 charging points near you, and searches within 100km radius for them, so you don't get charging points that are in Australia and most probably irrelevant for you.
I should probably change the wording for that message. Any ideas? Do you think 10 points and 100km are limiting?  I was also thinking that every time you press the Find button the phone uses internet, and for some people that can be quite some money.

Which model was the Samsung? And which model was the Sony Ericsson?

You are correct - there are not that many charging points registered for Norway.
I am ready to help out with "bulk" uploading if someone has a list...

#683
I made a program that runs on a mobile phone and uses the data from www.uppladdning.nu to find a charging point near you.
It uses cell id and does not need GPS unit.
There are currently two versions of the program - one for Windows Mobile phones and one for java phones - like Sony Ericsson or some of the nokias.
There are not that many charging points registered for Norway, but it still may be of use to you. Feel free to give it a shot and let me know what you think.
The programs are available when you type www.puru.nu/m/main.aspx in your mobile phone webbrowser and click on the link for the appropriate version.

#684
Elbilen i Samfunnet / Sv: Flyer for feilparkerte biler...
mandag 16. februar 2009, klokken 15:10
This was absolutely gorgeous Ravn!
I hope soon we will have similar problems in Sweden... there are not that many dedicated charging spots... and not as many cars either.
#685
Think City "Classic" (2000 - 2002 mod) / Sv: 100Ah NiMH-celler
mandag 02. februar 2009, klokken 11:00
The 100Ah modules that were sold by powerstream are QNF100. Google it and you will find plenty of company willing to sell them as well as specifications. Can not remember price, but they were expensive - something like 200USD per 1.2V 100Ah module... maybe more... could be less too.

Saft are probably not that easy to communicate with, but they do sell batteries. One would need the correct approach ("acceptable" implementation case) and lots of cash.

#686
Thanks electrolux - I was following that thread with great interest - my local lidl has exactly that charger... I will try to pick one up this week.
Betacar and the rest - status update:
The interface hardwarewise is ready. I have almost (just got the last component) assembled 10 cables (2 are already booked). I have solved the usb issue and now the cable can be used with usb too.
I am fixing up bugs and making better interface for the program  - the initial version will contain only display of parameters. A later version will do the initial and maintenance charging with water fill.
I also made a small program for pocket pc. Works only with pocket pcs with host usb function (I tested it on fujitsu-siemens loox n560), and displays Amps, Volts, State of Charge, Battery temp. It has a huge bar graph for visualizing the current Amp draw, and provides logging and other capabilities.
Someone will be helping me out with testing of the program and the interface, and as soon as this test is satisfactory (=no bugs, and all works as expected), the cable and the programs will be available.
I apologize for the delay!


#687
Sitat fra: El rayo på tirsdag 30. desember 2008, klokken 15:42
Have you got the price for these batteries?[/i]
Sorry, don't have a price - this was just an example of a product that may be of interest. There are similar products by the other big Li producers. There is also the Firefly Lead foam battery... only time will tell. I will see if I can fish out some more info.

Sitat fra: Rav4_EV på tirsdag 30. desember 2008, klokken 23:09
Disse batteriene er ikke noe nytt. 4 Thunder-Sky celler i serie.
hihi - well...
- "new" is a matter of perception. The last version of the battery is from May 2007 I believe...

- as you say - these batteries are simply cell connected together... they are packed in "common space" (whatever that means),  they are not good for electric vehicle propulsion though. Only for accessory battery.
Here is more info from the factory:

SitatBy tying only 4 cells together in series and charging the pack at
less than 1C of the pack capacity a BMS is not a requirement and
conventional 12 volt chargers could be used on occasion to restore a
charge to the battery when completely run down. The battery is
designed to replace a conventional lead-acid starter battery in an
ICE (internal combustion engine) vehicle. It will deliver 900Amps for
a short time (30 second) or 270Amps continuously until drained (about
10 volts).

- short life is also a matter of perception, my biltema battery is 1.5 years old and is giving up... so if I get 4 years out of this one, while help relieve the water pump, maybe it is not that bad.

I guess someone will just have to test them.

BTW - good going with the diagnostic tool! Would be really exciting to see one!
#688
Sitat fra: Ken på mandag 29. desember 2008, klokken 14:18
I am not sure whether the DC/ DC  charges the 12volt under charging of the main  battery. It often seems as if the 12V is charged after the power lead is removed from the car.
The 12V battery is charged during charging of the main battery pack. The voltage reported is around 14V.
I found couple of interesting alternatives.. check this:
http://www.thunder-sky.com/products_en.asp?fid=66&fid2=82
and in particular these two:
http://www.thunder-sky.com/pdf/20081122102212.pdf
http://www.thunder-sky.com/pdf/2008926101523.pdf

My default "plan" is to provide the program as shareware, the reading of parameters functions will be free of charge. The playing around with error codes and other "advanced" stuff may be for small shareware fee. I spent extensive amount of time and money in making this possible and although I made it for myself, it would be nice to recoup some of it. These are just a random thoughts – I may end up with a very different license and solution.
I haven't given much thought on open source - I do not feel that I need help developing the program - I make living writing software.
I however think I need help in figuring out what the program should do to make the life of a THINK owner easier.
I have already started on functions for calculating the battery pack internal resistance, few ideas for alarms when some parameters do not correspond...

Ilmar, if you have any personal experience with releasing software under open source, I would be happy to hear it...
Sitat fra: ilmarw på mandag 29. desember 2008, klokken 14:20
If you are planning to make a product for sale, this still does not mean you cannot make money by making the source code available.
Can you please elaborate, what would this business model be?
#689
Thanks for all the info!

The charger temps are floating within 3C of each other. So I guess all is good. Maybe I should think of implementing warning checks... like if the temperatures are not within 4 degrees - check the fans? Or if the difference between the average and max temperature in the battery is higher then 10C.

This gets more interesting every day!

Today I noticed that because of the low temperature (1C) when the car is turned off the accessory battery voltage goes almost immediately below 12.5V, which in it's turn switches on the charging of it.

The charging of the accessory battery (in my case) takes approx 1A from the main battery pack (127V), this should translate roughly to 8A (after losses) at the accessory battery (14V).
So, if I leave the car parked in the cold for 10hours, and the charging of the accessory battery is on practically all the time, the car would loose an energy that would need 1 hour of charging to compensate!

My battery is 1 and half year old (from biltema), and I have been very nice to it.

Anyone figured out a way to handle this? There are Li- accessory battery replacements I have seen... maybe they do not have that big voltage dip in cold weather.
#690
Actually, a Serial to USB adapter may or may not work. It depends on too many factors. I have one and will test to see if it works and what settings are needed.
The eco meter is a very good idea - what would be the limits for the different colors?
green from 0 to 100A?
yellow from 100A to 140?
red above?

El rayo - Interesting - I haven't thought about it. Maybe my car had a battery accident before I got it...

I have fixed all the parameters for the BMS and I am working on the parameters for the charger. I noticed though that the 3 charger temperatures while charging are up to 40C! Is this normal, or am I having a failed fan?
Also - what kind of currents are you getting while charging? I am having reported around 13A-14A charging current on the battery side, when in 10A mains current charging.

On a side note... it is really interesting how having the possibility to observe the parameters while driving changed my driving style...

I am attaching a screen shot.
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