Re: Looking for turn-key BMS system

Klaus Vestergaard Kragelund <klauskvik@hotmail.com> wrote:

Hi
 
One of my clients is looking for replacing existing HW, 2 200Wh battery
modules, which each has a BMS controller, that monitors and balances 12
lithium ion cells (4 series connection of 3 parallel cells). Each of the
modules has SOC output in the form of LEDs.
 
Beyond that, the overall system has a BMS controller that is powered
from either 24VDC (grid connected) or from the batteries. This BMS
controller also has SOC, with a connected display.
 
The client would like a turn-key solution, so minimal NRE due to low volume.
 
I am looking for a supplier of finished batteries with BMS and also BMS
controller. Perhaps one of you guys has worked with this? (need a stable
supplier)
 
Client is based in the EU.

Victron has been suggested, who are a good start for turnkey options.

In the DIY home storage and EV (electric bike, car) community there are a
bunch of 'smart' Chinese BMSes in use: (in roughly descending order of
usefulness)

JK BMS (Jikong)
JBD BMS (Jiabaida)
Daly BMS

which operate via Bluetooth, having their own phone apps but also a protocol
via RS485.  They come in versions from about 20A to 300A (although I
wouldn't run one near its maximum rating).

Then there are vendors who make rack-mount LiFePO4 batteries with BMSes
designed to talk to solar inverters:

Pylontech
Seplos

Usually those rack batteries are in 2+kWh configurations so perhaps less
useful to you, but maybe the BMSes are.


Probably not the kind of supplier or level of integration you want to deal
with, but it's useful to be aware of the communities using them.  More info
on various forums, eg:
https://diysolarforum.com/forums/bms-battery-managment-systems.23/

Fogstar as mentioned are just resellers of the Pylontech and other
batteries.

Slightly more integrated-ly, there are LiFePO4 'leisure' batteries that have
the BMS included.  Some of those offer a display or bluetooth app that might
give you enough information.

Theo