OK to show just how new I am to this I have some *really* basic questions about battery protection, to see if I'm understanding this properly.
1- simplest option seems to be use the BMS itself as the cutoff device on both charge and load sides.
2- better is to use the BMS to trigger separate cutoff devices (relays?), one on each side of the battery, sized according to the current they have to carry.
3- perhaps even better is to use smarter relays e.g. VSR that will do their thing without the BMS needing to tell them. On top of this, a smart charge controller or inverter will know when to stop sending/drawing power, adding a further layer of protection.
Does this sound about right? I know there are plenty of ways of configuring things. I'm hoping to install a LFP system but I'm concerned that my budget will not stretch to it, so I need to work out a sort of lowest cost practical system so that I can do a meaningful comparison with the lead-acids I would otherwise be buying.
1- simplest option seems to be use the BMS itself as the cutoff device on both charge and load sides.
2- better is to use the BMS to trigger separate cutoff devices (relays?), one on each side of the battery, sized according to the current they have to carry.
3- perhaps even better is to use smarter relays e.g. VSR that will do their thing without the BMS needing to tell them. On top of this, a smart charge controller or inverter will know when to stop sending/drawing power, adding a further layer of protection.
Does this sound about right? I know there are plenty of ways of configuring things. I'm hoping to install a LFP system but I'm concerned that my budget will not stretch to it, so I need to work out a sort of lowest cost practical system so that I can do a meaningful comparison with the lead-acids I would otherwise be buying.