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arduino/esp based BMS
#1
I'll be using The 7210A to charge up my pack since it will be a small system (520watt system) and a grid tie inverter with limiter.

I have an ESP32 on order to see if I can a) monitor voltages (14s) and b) create a discharge circuit  of around .75 - 1.0 amps

ESP32: https://learn.sparkfun.com/tutorials/esp...okup-guide
How to read multiple analog Read sensors (should apply to voltage readings i think): https://forums.adafruit.com/viewtopic.ph...7&start=60
Discharge circuit: 
https://www.youtube.com/embed/OBlmPQVaO4E

Good idea? has any one tried these methods or have had success/failures?
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#2
Check out BQ76940 that do all above in same unit kind of Smile
NOTE! My links supplied in this message may be affiliated with Ebay and by clicking on them you agree on the terms.
YouTube / Forum system setup / My webpage  Diy Tech & Repairs

Current: 10kW Mpp Hybrid | 4kW PIP4048 | 2x PCM60x | 100kWh LiFePo4 | 20kWh 14s 18650 |  66*260W Poly | ABB S3 and S5 Trip breakers
Upcoming: 14S 18650~30kWh
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#3
(05-22-2017, 04:46 PM)daromer Wrote: Check out BQ76940 that do all above in same unit kind of Smile

Looks good. I will probably still try to use the ESP to send all the data to a server. I feel like this will be a year long project.
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#4
I did draw up a design with ESP with the BQ but never finnished it. I do have it somewhere if you want it or Smile
Its not tested nor did you check all components. I left out the balancing part though. But can be added fairly easy if wanted
NOTE! My links supplied in this message may be affiliated with Ebay and by clicking on them you agree on the terms.
YouTube / Forum system setup / My webpage  Diy Tech & Repairs

Current: 10kW Mpp Hybrid | 4kW PIP4048 | 2x PCM60x | 100kWh LiFePo4 | 20kWh 14s 18650 |  66*260W Poly | ABB S3 and S5 Trip breakers
Upcoming: 14S 18650~30kWh
Reply
#5
(05-22-2017, 08:09 PM)daromer Wrote: I did draw up a design with ESP with the BQ but never finnished it. I do have it somewhere if you want it or  Smile
Its not tested nor did you check all components. I left out the balancing part though. But can be added fairly easy if wanted

wouldn't hurt. Thanks!
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