Close
0%
0%

SimpleBMS

At long last a cheap open source BMS

Public Chat
Similar projects worth following
I wanted cheap simple bms for cool electric vehicles but none exist. So I embarked on the project of designing my very own ghetto bms setup.

What it does:
Composed of a controller board + measurement cards
Measurement cards can measure and passively balance up to 24 cells
Measurement cards can be daisy chained with a two wire connection, up to 108 cells
Support for two temperature sensors per measurement card
other super cool stuff you gotta find out man

Looking for testers, that means you! Subsidized BMS for all who need them!!!

What it does:

Composed of a controller board + measurement cards

Measurement cards can measure and passively balance up to 24 cells

Measurement cards can be daisy chained with a two wire connection, up to 108 cells

Support for two temperature sensors per measurement card

supper cool documenation: https://docs.google.com/document/d/1rcPEgVMSxIcNP09jKinK9L7aD9OBSQAaJnEgJXyN9S4/edit?usp=sharing

View project log

Enjoy this project?

Share

Discussions

chilledkroete wrote 12/05/2019 at 00:19 point

So, i have 15 HX1188NL and 5 LTC6804-1 ICs here, ordered the two shipments for around 20 € each. Jey, in the EU the limit is 22 €, below that there are no extra-costs.

Will get the other components from digikey, i guess.

Hopefully will order the PCBs this week.

  Are you sure? yes | no

squeeky wrote 11/14/2019 at 08:45 point

Jey! Thank you for sharing your work, I am going to build it, too.

This will take a while, maybe until end of January, but i will post updates.

For everyone out here who is looking for the sauce:  https://git.sr.ht/~simple_bms/

And for the parts - i ordered some LTC6804-1 from aliexpress from three different resellers with the cheapest price of below 2 €. "Normal" shop price is around 20 €.

Schematics look good, funny, how you just drew the circuit diagram outside of the sheet ^^

* update: have to remove the max_error line in the pcb file to open it with Kicad 5.1.4. This has something to do with the nightly build of kicad. Rebuilt zones (b-key) . https://forum.kicad.info/t/nightly-pcb-file-using-with-5-1-2/17436

  Are you sure? yes | no

Similar Projects

Does this project spark your interest?

Become a member to follow this project and never miss any updates