Creating one Batterie instead of multiple single batteries

Modifications
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1

We are connecting 7 Basegreen 280 AH to the Cerbo GX.
The BMS from Basegreen is working fine showing all 7 batteries individually and also the total capacity in the screen Parallel Overview.
The Cerbo GX shows each single battery status etc in the loop, but we would like to create one single Capacity Battery in the Cerbo GX. How can this be accomplished?

2

Maybe with the “battery aggregator” ?

But don’t ask me, i know it exists…and that’s the end of my knowledge.

But I’m sure the search function here or in google will help you :smiley:

3

Thanks, the aggregator sounds good, is this a SW-Package that runs on the Cerbo, or do we need an additional Aggregator-box?

4

It is an additional software.

5
6

Thanks for the help, but it seems that the BaseGreen Batterie BMS is not supported by the Aggregator. Hence it does not work.
Does anybody have any other idea? It should not be Rocket Science to simply connect 7 Basegreen Batteries to a Cerbo right? How come this is not supported ‘out of the box’ ?

7

Why should it ?

8

Cause I think more people use more than one Batterie right?

9

Yes, but i see this as a problem for the battery manufacturer…

10

People should check their batteries capabilities, well designed batteries will have a set up with one chosen as master and the rest as slave an report the stats as a single bank to the Cerbo via CAN Bus.

Anyway, if you are interested you could look into the following.

  1. Load the beta test firmware V3.60~53 (or latest version) Large Image.
  2. Enable Node Red.
  3. V3.60 Node Red has a node called virtual battery which you could generate a single pseudo battery of the right capacity.
  4. You will then need to read in the information such as SOC from each battery using battery monitor or custom input nodes. I do not know if you can bring in CVL etc.
  5. You will then need a function node to calculate the SOC of the combined battery and output that to the virtual battery.
  6. The virtual battery will then appear on the Cerbo and can be chosen as the battery monitor.

You will need to investigate this yourself.

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