project experience in automotive industry
TRANSCRIPT
Contents Introduction Chalmers Formula Student Battery cell cooling Current Projects
Project experiences with in the Automotive Industry
Rajukiran Antham
Msc in Applied Mechanics,Chalmers University of Technology,
Gothenburg, Sweden.Email: [email protected]
Ph no: (+46) 0704232006.
August 29, 2016
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Contents Introduction Chalmers Formula Student Battery cell cooling Current Projects
Contents
Introduction
Chalmers Formula Student (CFS 15)
Battery cell cooling
Current Projects
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Contents Introduction Chalmers Formula Student Battery cell cooling Current Projects
Introduction
This is a presentation about my project experienceswith in the Automotive Industry.
I have been part of two Formula student teams andworked on various aspects of a car design fromconcept visualization to Manufacturing.
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Contents Introduction Chalmers Formula Student Battery cell cooling Current Projects
Chalmers Formula Student (CFS 15)
Chalmers Formula Student is a project where team of engineersdesign and manufacture a race car and compete in Formulastudent. This project involved different phases Pre-study, Design,Manufacturing, Testing and competition.I was part of Aerodynamics subgroup and I worked on the belowaspects of a car
Full car Aerodynamic SimulationsBattery Accumulator coolingDesign of Brake ductsManufacturing of Aerodynamic parts using carbon fiber
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Contents Introduction Chalmers Formula Student Battery cell cooling Current Projects
Full car Aerodynamic Simulations
I worked on almost all the Aerodynamic parts of the car and wasparticularly responsible for Underbody Aerodynamics and Design of thediffuser.
a) Pressure contours b) Velocity streamlines under car
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Contents Introduction Chalmers Formula Student Battery cell cooling Current Projects
Battery Accumulator Cooling
Providing sufficient cooling for our Electric power train was one ourprimary goal during our design activity.
The design of accumulator cooling was focused into two areas,Optimal location and shape of cooling ducts.Design of cooling channels in the battery.
Forced convection was used for cooling of the battery to ensure thatthe temperature in the cells are always less than 60◦C.
a) Battery Ductsb) Temperature profile in cooling
channels
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Contents Introduction Chalmers Formula Student Battery cell cooling Current Projects
Design of Brake ducts
Brake ducts were iterated along with full car simulations.MRF was used for brake disc and convective cooling simulations wererun along with full car.Influence of Front wing on Battery ducts was also studied.
Figure: Streamlines representing Brake cooling
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Contents Introduction Chalmers Formula Student Battery cell cooling Current Projects
Battery cell cooling (Personal Project)
The idea of running this simulation started when I ran Accumulatorcooling simulations for Chalmers Formula Student.
Coupling of flow, thermal and electrochemistry was achieved in thissimulations.
Battery cell with a nominal capacity of 14.6 Ah was discharged for1500 seconds at 1C.
Equivalent circuit model (ECM) was used to mimic Battery’s cellelectric behavior.
Ansys Fluent MSMD approach was used to run the simulations.
This simulation can also be extended to a Battery pack with bus barconnections.
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Contents Introduction Chalmers Formula Student Battery cell cooling Current Projects
Battery cell was cooled using air.Both Joule and Electrochemical heating was considered whilecalculating total heat generation.
Figure: Temperature distribution in Battery cell
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Contents Introduction Chalmers Formula Student Battery cell cooling Current Projects
Temperature rise in the cell and Battery cell voltage response with timecan be seen in below figures.
a) Temperature rise in cell with time b)Cell voltage response with time
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Contents Introduction Chalmers Formula Student Battery cell cooling Current Projects
Current Projects
Working on tyre splashing and wading simulationsusing Star-CCM+.
Extension of Battery cell simulations for full Batterypack cooling.
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Contents Introduction Chalmers Formula Student Battery cell cooling Current Projects
Thank you!
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