Planing CanView and BMS+ conversion with lithium

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My Elcon charger is now arriving tomorrow. My battery packs have been built, just need to get my Anderson plugs which I also had ordered from EVassemble which should also arrive tomorrow. You can see photos in earlier posts of this thread. Are you using your Enginer kit with your lithium BMSplus? The lithium pack would make a good energy buffer for the Enginer kit which should output a nice constant 16 amps.

 

I guess if you do not need the extra range you do not need it. In your case you could easily install the two Enginer battery packs and charger in the tyrewell. There should be plenty of room for the converter above the tyrewell. You can ditch the Enginer box.

 

Here are some photos of my BMSplus lithium battery kit. The complete kit is designed so that it can all be unplugged after removing 100A PHEV service fuse and easily remove all compoenents and then bench test/repair in a workshop. I will post more photos later when I have a faster internet connection. I think I have used up all my photo server memory allocation.

My PHEV control box includes a 75mV 200A shunt to be hooked up to my notebook computer via my USB DMM so I can log the lithium pack battery current. It is all still work in progress.

I can setup my Enginer converter to an operating voltage of 230V @ 240Vmax to top balance my 230Volt lithium battery pack using my miniBMS.

 

Looking good John! Do you have a signal cable between each miniBMS board or are they all independent?

 

Hi Flan,

I am using a miniBMS head end board. Two loop wires from each slave board are all connected in series to the head end board. The head end board will be installed into the control box.

 

Ok that makes sense, just couldn't see the loop wires in your picture.

I like the fact it's quick disassemble and removable, have you put in some sort of frame to restrain them in the car? I think you may end up with the worlds first 2 seater prius...

 

I am thinking of cutting back to one Enginer kit to free up space. Just do a Version 6 Enginer kit installation (ditch the box) which will reduce weight. Otherwise I could end up having the world's first Prius utility. Still thinking on how to restrain the battery packs. I may just use the cargo hold down attachments and some elastic straps. I have not fully installed the miniBMS loop wires yet - still work in progress.

 

Nice. You are very close driving with all this equipement.:thumb:

How will you connect the shunt to your computer. Will you have a very efficent isolation ?
This shunt is on the HT and will float far from the car ground. It can be 100V or more and moving very quickly.

I am sure you will be careful.

No hall sensor ?

I see you have received your Elcon charger. Can you change the amperage ?

Sure we will have some photos with all your equipement in your Prius.

 

My DMM uses optocoupling (optical port) isolation in the USB cable for isolation so it is safe. My notebook computer does not come with a 12v cigarette lighter plug as it will only accept a 19Vdc input to charge the notebook's six cell battery. So then I also have isolation between notebook computer and Prius 12V auxillary battery or 240Vac charger input. My DMM uses PClink software and can measure DC mV using a 600mV range with 0.1mV resolution and accuracy of +/-0.5% of reading +8 digits. I would probably get more accuracy using a shunt rather than using a hall sensor when it comes to measuring a high impulse current. It just happened that I had a old shunt laying around anyway. I do not think I can change the current setting on my Elcon charger as It has been specifically setup for 70 cells for CC/CV mode using a specific charging algorithm by a nuclear physicist (needed 14 days to make individual settings to my Elcon charger) at EVassemble. I can also use my Canview serial port to log the traction battery current. I bought this DMM on eBay at this link

http://www.ebay.com.au/itm/SINOMETE...st_Equipment&hash=item3cbc034e3e#ht_766wt_654

I should also invest in getting a fire extinguisher just in case .......

 

Why not use the Enginer DC Converter to charge your Lithium battery pack for the time being?
I would not be surprised if Elcon in the USA were importing their battery chargers from China.

 

Not long to go now, almost there. Just need to hook into Prius HV battery terminals. See photos. Just need to install a EV display unit at a later date as it is on order from Dimitri. The EV display unit hall sensor will go inside the control box.

 

I have been thinking of reorganizing my PHEV kits space allocation. I will fit all of my five lithium battery banks including plastic containers inside my existing Enginer box including the Enginer auto fire extinguisher. My Enginer box has been previously modified to an increased height of 300mm. I can fit one set of Engimer battery packs and 48V charger inside the tyrewell. Install Enginer converter and Elcon charger on top of Enginer box lid.
No room left for second Enginer kit, for now.
I have included two 100A service fuses. One between connection to Prius HV + battery and 175 Anderson plug. The other 100A service fuse was used to split the lithium battery pack 3/2 to improve short-circuit protection and make it safer to work on.

 

Did my first test run today. I noticed the IntZ value on my Canview change from 210mohm to 50mohm. It all went well.

 

Congrats !!!