
Battery Management Systems for Hybrid Electric Vehicles and Electric Vehicles 31-21
31.4.12 Battery Model
e battery model is embedded inside of the battery controller used to describe the characteristic of
the battery in all of its possible working conditions such as temperature, voltage, discharge rate, and
SoH. Figure 31.22 shows the general discharge rate characteristics of batteries. Figure 31.23 shows how
the battery discharge time is inuenced by ambient temperature. ese two gures show only the big
picture of battery characteristics. In a practical battery model, since the target battery is known and the
characteristics are obtained ...