Battery Management System For Solar Powered Sprinter Van | Victron Energy BMS300200000
Each individual cell of a LiFePO4 battery must be protected against over voltage, under voltage and overtemperature. Mercedes Sprinter Van Lithium-Ion batteries have integrated Balancing, Temperature and Voltage control (acronym: BTV) and connect to the Battery Management System (BMS) with two M8 circular connector cord sets.
The BTVs of several batteries can be daisy chained. Up to five batteries can be paralleled and up to four batteries can be series connected (BTVs are simply daisy-chained) so that a 48V battery bank of up to 1500Ah can be assembled.
Protects 12V, 24V and 48V systems
The operating voltage range of the BMS: 9 to 70V DC
Communicates with all VE.Bus products
The VE.Bus BMS connects to a MultiPlus, Quattro or Phoenix inverter with a standard RJ45 UTP cable
Other products, without VE.Bus, can be controlled as shown below:
The Load Disconnect output is normally high and becomes free floating in case of imminent cell under voltage (default
3,1V/cell, adjustable on the battery between 2,85V and 3,15V per cell).
Maximum current: 2A.
The Load Disconnect output can be used to control
– the remote on/off of a load, and/or
– the remote on/off of an electronic load switch (Battery Protect)
The pre-alarm output is normally free floating and becomes high in case of imminent cell under voltage (default 3,1V/cell,
adjustable on the battery between 2,85V and 3,15V per cell).
Maximum current: 1A (not short circuit protected).
The minimum delay between pre-alarm and load disconnect is 30 seconds.
The Charge Disconnect output is normally high and becomes free floating in case of imminent cell over voltage or over
temperature. Maximum current: 10mA.
The Charge Disconnect output can be used to control
– the remote on/off of a charger and/or
– a Cyrix-Li-Charge relay and/or
– a Cyrix-Li-ct Battery Combiner
– Enabled (blue): VE.Bus products are enabled.
– Cell>4V or temperature (red): charge disconnect output low because of imminent cell over voltage or over
– Cell>2,8V (blue): load disconnect output high.