LEXSOLAR-EMOBILITY INSTRUCTOR
Ref: 1804
Description: The world is turning to electric transportation to curb greenhouse gas emissions. The trend toward electric mobility forces changes along the automotive sector's entire value chain. The new vehicles on the one hand require a number of technically innovative components and systems to operate and on the other hand new infrastructure, business models and services. The only way to achieve this, is high-quality training and education at colleges, vocational schools and universities. With leXsolar-EMobilty Instructor students can gain comprehensive knowledge of state-of-the-art electric mobility systems as well as the underlying technical concepts and components. Batteries and battery management systems, controllers and CAN bus as well as motor and power train concepts are only a few topics that are addressed with the practical training sessions of leXsolar-EMobility Instructor. To top it all, students can really drive and the combination of a powerful ride and lab experiments guarantees great learning success! Detailed specifications of the components: Interfaces - The system can be accessed by: - USB for data acquisition (PC) - Bluetooth (tablets) - Display (on the dashboard) - CAN-Bus - handheld measurement devices Dashboard The dashboard gives access to all measurement parameters and allows the full control of the complete car: - Key switch for the dashboard mode - Display with SOC, battery voltage, battery current, power - Overall battery voltage measurement - Individual cell voltage measurement - Motor temperature measurement - Motor voltage measurement - Smooth acceleration control using Potentiometer - LED interface (indicating mode of operation) - USB port for motor configuration - USB port for data logging - USB port for battery management system (BMS) The data logging system with integrated sensors gives access by computer to: - Battery voltage [V] - Battery SOC [%] - Battery current [A] - Electrical power [W] - Battery temperature (NTC sensor in the middle of battery pack) [°C] - Voltage of each single battery cell [V] - Temperature of each single battery cell [°C] - Consumption [Wh / km] - Distance left [km] - Motor voltage (all three phases) [V] - motor current [A] - Vehicle Speed [km/h] - Motor shaft RPM [1/min] Battery Pack - LiFePo 30Ah capacity - Energy content: 1kWh - 2P16S configuration - Nominal Voltage 51.2 Volts - Continuous discharge current: 75A - Max. Peak discharge current: 150A - Anderson type connector for battery charging - Emergency stop switch BMS - Battery protection from under-voltage, over-voltage, over- current and overheat - Balancing feature for single cells - CAN-, USB-, RS-232- interface Power Train - 5 kW BLDC motor - Rated voltage: 48V - Rated speed: 4500 RPM - Efficiency: 88% - Belt connected direct drive Motor Controller - Rated operating voltage: 48-96 Volts - Rated DC bus current: 30 - 200 Amp - USB port - CAN communication - Allows recuperation Car - Max. speed: 75km/h - Acceleration from 0 to 75 km/h in 5 seconds - Stainless steel axle with high performance brakes - High quality frame made in Germany - Car Axle speed: 2500 RPM Platforms - Delivery is including a stable aluminium platform for working in the lab - Delivery is including additional platform with vehicle in upright position for transport and space-saving storage Experiments: Training units and Selected Experiments Section 1 General Safety Precautions - Electrical and mechanical safety instruction - Exercises on electrical safety of electric vehicles Section 2 Configuration and communication - Motor controller configuration - CAN-Bus - BMS configuration - Bluetooth setup Section 3 Dimensioning electric vehicles - Limiting components and parameters of electric vehicles - Calculating and optimizing driving range of electric vehicles Section 4 Acceleration Tests - Acceleration test on different road profiles - Determine the change in overall line current and voltage according to change in speed. Section 5 Performance Tests - Performance test for different loading conditions - Torque speed characteristics - Efficiency vs Input current and power - Calculating state of charge for different discharge duration and analyze with motor output power (Fuel Efficiency) - Overall efficiency Section 6 Battery and Battery Management system - Determination of the main battery parameters - Analyze the Battery Management System (BMS) function by discharging the battery pack with and without BMS - Balancing of battery packs - Charging and charging methods Section 7 BLDC motors - Setup and functional principle of BLDC motors - Voltage Current (IV) Characteristics of BLDC motors - Torque-Speed / Torque-Power characteristics of BLDC motors - Efficiency of BLDC motors Section 8 Regenerative Braking - Concept of Regenerative braking Section 9 Failure Analysis Detailed Instructions for about 30 lab activities with at least 45 hours duration