A couple of weeks back, there was an ongoing discussion about
building a custom battery that Peri was designing. An offshoot post
from that by Tim Economu offered an open source BMS/cell module
assembly project that he had worked up:
http://electric-vehicle-discussion-list.413529.n4.nabble.com/custom-battery-DKblock-td4696973.html
(pointing to the Nabble archive)
https://github.com/offgridsystems (github resource repository)
I was surprised that this received no replies, as it looked like an
interesting project. I had a look at the source code for the "Block
Manager" (cell level monitor), and although it had features that
wouldn't necessarily apply to a simple management system, all of the
programming that would be needed was there and well written. It would
likely be a matter of removing unneeded code for features that
weren't going to be employed (thermal management for example), as
well as adjusting voltage setpoints for your particular cell chemistry.
Tim Economu's qualifications and background are impeccable, you
couldn't ask for a better collaborator on a project like this.
All of the components to replicate a v.2 or v.3 MiniBMS knock-off are
available in through-the-hole packages. The parts count is low enough
that they would still be fairly compact when completed.
> Even the v3 boards are not terribly complicated from a circuit
> standpoint. And I feel confident that the firmware they run could be
> replicated. I could easily see creating an open source PCB and firmware
> again.
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