Batrium System for CALEB LiFePO4 Cells

Wattsup

Member
Joined
Feb 19, 2017
Messages
512
Hi guys

Wasn't sure where to post this, mods feel free to move if needed .

So I bought a batrium system for my CALB cells LiFePO4 cells. I've had it for a couple of weeks but just finding the time to sst it up today.

I thought I'd share the process here and will most likely have questions :)

The bockmons and daisy chain cables are all mounted and green leds on all mons.

I'm busy reading the batrium website and watching Pete and Daniel's vids to work out the next steps. I dont have the shunt yet as they were out of stock.


Photos below


image_kstrvq.jpg



image_dallev.jpg
 
@Wattsup

Is this pack temporarily 12v and then will bereconfiguredto 48v ?

Looking good, afew pointers about your install:
  1. For parallel multiple string make sure the feeding POS/NEGcables linkedto the inverter/charger need to be at either end.
  2. Cable management ideal methods
  • a. Red cable from Blockmon should be position above the busbar link to reduce the chance ofcatching from tools slipping the wrong way.
  • b. keep the red wire looped with the cable slots near the positive
  • c. keep the comms cable (blue/yellow) on the far side of each mon between them so that if the cable is yanked this locks against the pcb and not pull out of the socket.
  • d. tuck thecomms cable (blue/yellow) under the battery busbar to minimise it for be caught
  • e. some of the power lugs areabove the Blockmon pcb,the power path should always be direct betweenthe batteryand busbar/lug,theblockmonis thenabove to avoid largecurrentsfrom being transferredthrough the pcb.

Some of the above is outline in the document found on the BlockMon page
Connecting BlockMons (Battery Chain)


Arrows related to (e)

image_yfmubz.jpg


Arrows related to (c) & (d)

image_coeobk.jpg


Examplecable management ofblockmons to avoid them being caught by tools or other objects.

image_yronnp.jpg
 
Batrium said:
@Wattsup

Is this pack temporarily 12v and then will bereconfiguredto 48v ?

Looking good, afew pointers about your install:
  1. For parallel multiple string make sure the feeding POS/NEGcables linkedto the inverter/charger need to be at either end.
  2. Cable management ideal methods
  • a. Red cable from Blockmon should be position above the busbar link to reduce the chance ofcatching from tools slipping the wrong way.
  • b. keep the red wire looped with the cable slots near the positive
  • c. keep the comms cable (blue/yellow) on the far side of each mon between them so that if the cable is yanked this locks against the pcb and not pull out of the socket.
  • d. tuck thecomms cable (blue/yellow) under the battery busbar to minimise it for be caught
  • e. some of the power lugs areabove the Blockmon pcb,the power path should always be direct betweenthe batteryand busbar/lug,theblockmonis thenabove to avoid largecurrentsfrom being transferredthrough the pcb.

Some of the above is outline in the document found on the BlockMon page
Connecting BlockMons (Battery Chain)


Arrows related to (e)

image_yfmubz.jpg


Arrows related to (c) & (d)

image_coeobk.jpg


Examplecable management ofblockmons to avoid them being caught by tools or other objects.

image_yronnp.jpg

Thanks for the detailed response!

Yes I'm going to run the 100 ah cells at12 volt for now until I get to know the system, then I will parallel the 60 ah cells and run at 48 volt. Is there anything else I need to be aware of in this case.


Can I ask the reason for your #1. response. Just want to understand reason forthis.

I will tweak the connection/cable management to your recommendations.

Ive just ordered some extra blocmon cables from your store so will put the rest of the install on hold until I have those.

Your site was helpful but Daniel's install video got quite a few more views today ;)
 
Regarding #1. The thing is that the cables to induce resistance. And as we all know this will lead to voltage drop. If you have both neg and pos in same end of the packs you will have a resistance to the other end. So for instance under load you will have a voltage difference over those packs compare to the packs in the connected end.

In the end this will lead to that the batteries closest will be abused more then the ones on the other end.

The more packs hooked up in parallel the more complicated this will get :) And as always make sure to keep the resistance to minimum for all wires that you use to paralell the packs to reduce the issues.
 
I thought that was the reason. Thanks
 
Wattsup said:
I thought that was the reason. Thanks

Yes,daromer explained itif each link is 1 milliOhm (typically it is more). Your current configuration hasthe far cells (left) with6additional links hence 6 milliohms more impedance than the closest (right).
 
Back
Top