Internship on Electric Vehicle Technology
4-week educational internship program comprising 2 days of offline session at Decibels RVCE Electric Vehicle - Center of Competence, Bangalore followed by online sessions
Software tools used
What you will learn
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Understand the Need of Electrification, Foundation to Li-ion Cell Technology, BMS, Battery Pack, Traction Motor, Motor controller, Charger & DC-DC converter
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Learn about Thermal Management System, HV Wiring, Safety Components & VCU, Demonstration of Overall Vehicle Components
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Physics behind powertrain modelling
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How to build an EV powertrain model for sizing & energy analysis
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How to size the components wrt to various drive cycles & performance targets
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Analytical insights & decision making skills with the simulation models
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Energy consumption (Wh/km) wrt to different test scenarios
Internship Overview
Decibels Lab is offering an internship program specifically designed for engineering students from the Mechanical, Automobile, Electronics & Communication (E&C), and Electrical Engineering (EE) streams. This internship aims to provide comprehensive training and career guidance to aspiring students and fresh graduates who are interested in building a successful career in the EV industry.
Duration: 4-week
Format: The training will be conducted in both offline and online formats.
Students will be required to visit our EV lab for 2 days, which is located in RV College of Engineering, Bengaluru. The remaining duration of the internship will be conducted remotely via online platforms.
Offline Visit
The content for the two-day offline visit will be the need for electrification, Li-ion cell technology, battery pack components, motor controller, charger & DC-DC converter, thermal management system, HV wiring & safety components, and software in Electric Vehicles.
Online
Training will be done online via recorded videos. The internship comprises topics such as analysing the powertrain for various drive cycles & vehicle target performances to decide, Traction Motor sizing (Motor nominal & peak torque and current, RPM, Operating Points at various loads & speeds, motor Power, motor efficiency & motor regeneration energy possibilities etc.) & Traction battery sizing (Pack & Cell nominal and peak current, Cell C-rating for selection, battery SOC wrt to different drive scenarios, energy consumption (Wh/Km) & Vehicle range estimation, number of cells in series & parallel & battery pack size etc.
Foundation to Electric Vehicle Technology - Offline Visit
Week 01
Week 1 of the internship will be offline visit for 2 days to our EV Lab facility in RV College of Engineering where we have tear-down setup of Ather-2 wheeler EV & provides comprehensive coverage of various topics, including "Well to Wheel and Pump to Wheel analysis" for EVs with ICE vehicles, EV subsystems and architecture, different cell chemistries and their behavior, types of cells used for tractive applications, characteristics and working principles of different types of motors, case studies of existing traction electric motors, the motor selection process for vehicles, an overview of Battery Management Systems (BMS) and motor controllers, regenerative braking, EV auxiliary components such as HVAC systems and cooling/heating systems, EV charging systems and infrastructure, powertrain calculations and component sizing, exposure to vehicle thermal management components, integration of high voltage systems in different vehicles, and an overview of simulation tools at cell, pack, and subsystem levels. By the end of week 1, interns will gain a comprehensive understanding of EV architecture and functioning.
MATLAB Scripting for 1-D Simulation
Week 02
Week 2 of the internship delves into various topics, including the foundation of MATLAB GUI, data types, script creation and editing, basic math operations, importing and exporting data into MATLAB, graphical plot creation including 2D and 3D plots, bar plots, and histograms, matrix and array operations encompassing functions and math operations, and basic MATLAB programming involving loops and conditional statements. By the end of Week 2, Interns will gain proficiency in utilizing the MATLAB software.
MATLAB - Simulink for System Modelling
Week 03
Week 3 of the internship focuses on various topics, including the foundation of MATLAB-Simulink GUI, exploring Simulink library and features, practising commonly used Simulink blocks, understanding Simulink operations, modelling programming constructs, working with continuous and discrete systems, selecting solvers, grasping workspace and model protection concepts, creating model masks and libraries, and practical applications of MATLAB-Simulink such as vehicle aerodynamic force modelling, thermal modelling of a house, and Nickel Metal Hydride Battery modelling. By the end of Week 3, interns will be able to effectively utilise the Simulink software for various applications.
Powertrain Modeling Quasi-Static Approach
Week 04
In Week 4 of the internship, Interns delve into various topics, including understanding the EV powertrain system and its dynamic behavior, exploring parameters that influence performance, studying driving cycles and their significance (such as NEDC, Artemis Rural/Urban/Highway, FTP-75, WLTP, RDC, acceleration and gradient test cases), comparing drive cycles, generating real-time drive cycles with test vehicles, modelling resistive forces that affect vehicle performance (rolling resistance, grade resistance, aerodynamic resistance, acceleration, and inertial forces), and analyzing the impact of each force on performance. Week 4 also includes tasks like creating traction battery models, performing hand calculations for pack parameter estimations, understanding cell datasheets, and modelling packs to evaluate battery power, current, operational C-rates, energy consumption per kilometer, total energy consumption for drive cycles or required range, and configuring cell connections in series and parallel. Additionally, interns undertake vehicle projects involving the Ather 450X, Nissan Leaf, and Student Formula vehicles. By the end of week 4, interns will gain the ability to analyze the effects of each parameter, make analytical decisions based on simulation results, and select components such as transmission gear ratios, electric motors (torque, RPM, power), battery packs (capacity, current, C-rate, energy per kilometer), conductors (wires, busbars), and contractors/fuses (maximum current).
Applied Projects
The internship includes 3 major projects & several minor projects. Projects during the course will help you gain real-time experience, and insights from failure, than just the information or knowledge. In this course, learners will build the detailed physics-based powertrain model for NISSAN Leaf (4W consumer vehicle) under the guidance of a mentor through video-led sessions. Interns will take up the mentored assignments to recreate & analyse the powertrain for Ather electric scooter (2W consumer vehicle) & Electric formula race car (4W special purpose vehicle). Various test cases such as urban, rural, highway, grad-ability & acceleration are performed during simulation to gain insights & approach for sizing. Projects will help you build a portfolio of projects that showcases your job readiness to potential employers.
Career Guidance
In addition to technical training, we will provide career guidance sessions, mentorship, and exposure to real-world EV projects to help participants develop a holistic understanding of the EV industry and enhance their employability.
Upcoming Batches
Note: The first 2 days of the internship will be conducted offline at our EV Center of Competence, located in RV College of Engineering, Bengaluru. Following the initial 2 days, the remaining duration of the internship will continue online with pre-recorded lectures.
Sample Certificate
Learners will receive a digitally verifiable & LinkedIn shareable certificate by the completion of this course/educational internship with a unique Certificate ID. Decibels Lab Pvt Ltd
(Recognized as Start-up by the Department for Promotion of Industry and Internal Trade Ministry of Commerce & Industry Government of India) (Certificate Number: DIPP45372)
