Recommend 16S LiFePo4 BMS with atleast 100A charge/discharge and RPi monitoring?

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marivesel

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Hello,
I'm using ANT BMS on my home solar project and monitoring cells/capacity via Raspberry Pi, but it's capable of only 50A charging (can go up to 60A/70A with a little push), but now I'm building a bigger solar project and I need to be able to charge/discharge with a continous rate of 100A (even 125A+ would be better), and also be able to configure monitoring via RPi (to InfluxDB/Grafana, etc.)

There are several cheap versions of BMS's with that power capability, but for none of them I found a complete solution for monitoring:
1. JBD 16S 48V BMS - https://www.aliexpress.com/item/1005001831386283.html
2. Jikong BMS 1A/2A Active Balance - https://www.aliexpress.com/item/4001192978656.html
3. DALY Smart 16S 48V - https://www.aliexpress.com/item/1005001310255704.html

Can anyone suggest a working solution for my needs?
 
What about using the BMS output to control contactors? You can keep everything in place and instead of it switching the load directly it just sends the signal to the contactor?
 
marivesel said:
now I'm building a bigger solar project and I need to be able to charge/discharge with a continous rate of 100A (even 125A+ would be better), and also be able to configure monitoring via RPi (to InfluxDB/Grafana, etc.)

There are several cheap versions of BMS's with that power capability, but for none of them I found a complete solution for monitoring:
Click to expand...
In my case besides having a Batrium 4 to monitor my packs I found complete monitoring of my whole system to be a challenge especially multiple parameters. So I developed my own using ESP32 microcontrollers. In my case I used 100A/75mv shunts. There are a variety of theses shunts available with all kinds of Amp ratings. Then its just a matter of some ADS1115s a little code, sending data to influx with an ESP32 and you can monitor anything to your heart's desire.

Wolf
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At higher currents you might consider move to a different structure, eg instead of an all-in-one "MOSFET disconnect" current limiting type of BMS, move to a "shunt trip" actuator on a large DC breaker under control of a larger BMS using a shunt & cell monitors.

Could start with a Victron BMV-702 or 712 with a 500A shunt.

What suits best might also depend on how you're using the system?
 
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