BMS management system 12/200 - Victron Energy

Cell balancing/monitoring cables can be cascaded and must be connected to a Battery Management System (BMS). Battery Management System (BMS)The BMS connects to BTVs and performs the following key functions:1 - disconnects or shuts down the load whenever the voltage of a battery cell falls below 2.5 V;2 - interrupts the charging process whenever the voltage of a battery cell rises above 4.2 V;3 - shuts down the system whenever the temperature of a cell exceeds 50° C;4 - Performs cell balancing;5 - BMS provides up to 200 A with any DC load (including inverters and inverter/chargers);6 - Additional functions can be integrated: see BMS-specific data sheets.Advantages:1) Lithium iron phosphate (LiFePO4 or LFP) batteries are the safest among conventional lithium-ion batteries. The rated voltage of an LFP cell is 3.2 V (lead acid: 2 V/cell). Thus, a 12.8 V LFP battery consists of 4 cells connected in series; a 25.6 V battery, on the other hand, consists of 8 cells connected in series.2) Up to 70% less space and weight than conventional batteries.3) A lead acid battery will stop working prematurely due to sulfation if:- it works for long periods of time in deficit mode (i.e., the battery is rarely, if ever, fully charged);- it is left partially charged or, worse yet, totally discharged.An LFP battery does not need to be fully charged. In the case of partial charge, the lifespan even increases slightly in comparison with the case of full charge. This is one of the main advantages of LFP batteries over lead acid batteries.4) Other advantages are wide operating temperature range, excellent charge cycle performance, low internal resistance and high efficiency.