DIY Electric Car Forums banner
1 - 2 of 2 Posts

325 Posts
Discussion Starter · #1 ·
A simple and effective BMS is to divide a pack in half, and monitor the voltage of the two halfs. If they differ by more than a certain percentage, then you stop charging/discharging, since the pack is no longer balanced.

You can then extend this to 1/4 pack monitoring to avoid the chance that multiple cells in equal amounts go bad.

Measuring just 2 values is significantly simpler and cheaper than measuring 40-80 of them. Measuring 4 values may not cost any more than 2.
Measuring 8 values might be a lot more.

There is a curve on cost/benefits.
1 - 2 of 2 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.