15
Technical data
and start-up
EVB1-350/400-40-HP
3.4
Safety installations / power limitations
3.4.1
Temperature Monitoring (Derating)
This security installation is the battery's self-protection. If a cell packet achieves a defined temperature threshold,
this means a decrease in power (derating) to protect the battery from damage through overheating. The power will
subsequently be reduced until the temperature falls back to the target range. If a cell reaches the defined limit, the
current is reduced to 0 A. If the temperature rises despite derating and the defined default values of the battery are
not adhered to, the battery is immediately disconnected from the DC intermediate circuit. Further information on
temperature measurement can be found in chapter
6.6.3 Temperature Measurement / Temperature Monitoring
Charging
If the battery temperature is lower than 15°C, the derating begins till 5°C (reducing current with 10.8A/°C).
If the battery temperature is lower than 5°C, the BMS allows a maximum charging current of 12A till 0°C
Below 0°C the BMS limit the charging current to 0A
To inform you the CAN signal
BMS_MODE_TP
is emitted.
If the battery temperature is above 35°C, the derating begins till 45°C (reducing current with 8A/°C).
To inform you the CAN signal
BMS_MODE_TP
is emitted.
Above 45°C the BMS stops the charging process
