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pcb on 8 modules cell pack

Posted: Thu Oct 05, 2017 3:25 am
by Ghost128k
Dear sirs, we have received from deuchland a pack with 8 cells to replace a defective one over a peugeot ion.
when we open the module appears BMS and other pcb that we dont knowk about it:
this is the numbers over the unknow pcb:
p/n 9499A795
s/n 01000008756
type: G8D-795M-4
pwr(A)
pwr(b)
ver 0.0.2

any ideas that what function has this pcb?
Thanks a lot

Re: pcb on 8 modules cell pack

Posted: Sat Oct 07, 2017 7:23 am
by kiev
There are two boards in an 8-cell module, the first or primary board has the controller chips, and the secondary board just reports the voltage and temperatures to the primary board. Does this look like what you found?

!Image!

Re: pcb on 8 modules cell pack

Posted: Sat Oct 07, 2017 7:36 am
by Ghost128k
Yesenia That are the two PCB!
We think That the right one is a BMs and the left Washington unknow
Thanks a lot

Re: pcb on 8 modules cell pack

Posted: Sat Oct 07, 2017 10:41 am
by kiev
The left board is a Cell Monitoring Board that is found in each module whether 4 or 8 cell. The right hand board is only found in the 8-cell modules. The CMBs report voltage and temperature to the BMS and also control balancing circuits.

The main BMS is in a little plastic box under the rear seat. Each of the CMB's (there are 12 total for 88 cell packs) talk to the BMS over the CAN communications buss.