*Investigations of Using an Intelligent ANFIS Modeling Approach for a Li-Ion Battery… DOI: http://dx.doi.org/10.5772/intechopen.105529*

environment integrated with a specialized simulator ADVISOR for batteries design of different chemistry, which is very spread in the automotive industry. National Renewable Energy Laboratory (NREL) developed this simulator in 1983 and improved its performance until the last release in 2003-00-r0116. A 6 Ah nominal capacity and 11 V nominal voltage SAFT Li-ion battery integrated into the hybrid electric vehicle (HEV) BMS structure, namely a Japanese Toyota Prius, one of the most spread commercial hybrid electric cars on the automotive industry market. It is equipped with an MC-AC75 motor of 75 kW and a powertrain control version, TX-5SPD manual transmission with five speeds and frontal wheel drive, as shown in **Figure 1**. In this figure on the right side, the reader can see the type of vehicle in the database of the ADVISOR simulator considered one of its primary inputs; also, at the bottom side is shown the open-circuit voltage (OCV) graph of the proposed SAFT Li-ion battery as the most suitable for the HEV car selected in the case study.

**Figure 2** shows the Simulink diagram of the Toyota Prius HEV car configuration. In **Figure 3**, you can see the graphical user interface that selects the urban dynamometer driving schedule (UDDS) of cycle speed profile for a driving test, the initial temperature, state of charge (SOC), and the ambiental conditions.

In **Figure 4**, the MATLAB simulations results are displayed. Among these results two of the variables of interest can be emphasized, such as the UDDS driving cycle input current profile (ess\_current) and the battery SOC evolution (ess \_soc\_hist).

The UDDS driving cycle of the current profile shown in **Figure 5** is the equivalent of the UDDS driving cycle speed profile shown in the graph in **Figure 3**. It represents

**Figure 1.** *The ADVISOR 3.2 simulator -input interface set up.*

**Figure 2.** *Block diagram of HEV powertrain configuration.*

**Figure 3.**

*Graphical user interface with the ADVISOR simulator parameters.*

the evolution of the input battery current during a repeated sequence of charging and discharging the battery for different periods.

More precisely, the ADVISOR 3.2 Simulator provides an extensive Database of different types of HEV cars, driving cycles speed tests, and input currents profiles for battery charging and discharging cycles.
