27/45
Figure 15: Battery charge profile
The following profile gives the recommended maximum currents for the normal charging profile
as a function of temperature, for a VL45E cell. If the charge current is above IMR_C and below
IMR, an algorithm is running and decreases the IMR current until IMR_C value (the slope will
depend on the current value and the time above the limit; about 30s for high current). The
contactor will open if the current is upper the MAX (IMR x 1.6 ; 55A) during 30s.
Figure 16: VL45E normal rate charge profile (IMR & IMR_C vs T°C)
VMR
IMR limit sent on CAN Open by BMM
IMR_C limit sent on CAN Open by BMM
VMR limit sent on CAN Open by BMM
Battery voltage
Charger current
Time
1
2
IMR_C
IMR
3