“Hardware eventually fails. Software eventually works” - Michael Hartung
The battery pack I’m assembling is small by present standards... a 20 kW pack. Still, very dangerous: see
ResearchGate for a review of EV car fires.
I’d like to understand the failure modes more thoroughly before buying into the illusion of control.
For comparison, another hobby of mine is espresso- there is a lot of energy in a boiler, and in one famous incident in England in 2010, an explosion injured six people. Espresso machines have three safeties to prevent this ...a primary based on temperature, a secondary based on pressure, and finally fail safe plugs that pop if overpressure exceeds design limits. Still, if a thin walled boiler ages and weakens, and the water level runs low, you get a large volume of steam at pressure (nearly empty boilers are more dangerous than overly filled boilers.... the energy is in compressed gas, not in incompressible liquid).
I don’t want to ‘eventually’ get the charge cycle of my LiPo pack right. It’s worth it to me to buy quality (and it appears the Orion2 is an example) and pay to have it properly configured by someone who has practical experience with a specific canbus controlled charger.
Ideally, I’d like a dead man switch on the chager and traction contacters that would cut the charger at at absolute over voltage, and disable pack discharge at an absolute under voltage... with thumb switches that set those voltages... anybody built one already?
THANKS FOR ALL YOUR HELP!