Workshop Day

Workshop A

8:00 am - 10:30 am SIMULATION APPROACHES FOR THERMAL AND ENERGY MANAGEMENT
Dr. Jean-Michel Fiard - Expert Thermal Physics and Innovation, Renault
Simulation is a great tool to save costs in vehicle development. This applies especially to the thermal management
system of xEV where numerous options are under study today. In this workshop we go into details
of the multi-physics simulation approach and review some applications and case studies. We discuss:
• Objectives and the limits of such thermal and
energetic synthesis models that allows to simulate
customers cycles
• Methods including physical system modelling, vehicle
model assembly, control and strategies implementation
without forgetting correlation with measures
• Concrete application to PV or small LCV for battery
and powertrain thermal management & cabin comfort
img

Dr. Jean-Michel Fiard

Expert Thermal Physics and Innovation
Renault

Workshop G

8:00 am - 10:30 am HOW MANY GEARS FOR ELECTRIC DRIVELINES IN CARS
Prof. Dr. Bernd-Robert Höhn - Founder, ZG Zahnräder und Getriebe
To define the necessary ratio for ic-engines 3 ratios are defined:
Starting-ratio for a given torque at the wheels from an ic-engine characterized with torque and power Highspeed-
ratio for the recommended or given highspeed of a car with the speed of the ic-engine for maximum
power. Overdrive-ratio for reduced fuel consumption by a given be-map of the ic-engine Why this procedure
are not used for electric drivelines in cars? The wellknown procedure should be used for an electric engine
with their efficiency map. The necessary ratios and the spread of such a transmission will be shown in the
presentation. For a given example of a car and an electric-engine with their efficiency map will be explained
how many gears are needed. Furthermore an example of such a gear will be shown.
img

Prof. Dr. Bernd-Robert Höhn

Founder
ZG Zahnräder und Getriebe

10:30 am - 11:00 am Morning coffee break

Workshop B

11:00 am - 1:30 pm BATTERY THERMAL MANAGEMENT IN THE AGE OF (ULTRA) FAST CHARGING
Dr. Volker Null - Technology Manager Thermal Fluids, Shell Global Solutions (Deutschland) GmbH
Progress in battery technology and the charging process plays
a crucial role in mass adoption of electric vehicles. Thermal management
of the battery is a huge factor in the aspects of life,
safety, and efficiency (influencing the range) and optimizing it
can have a big impact on the above. Modeling and simulation
are very powerful tools to optimize performance and save costs.
In this workshop the moderator will describe thermal modelling
approach for single cell and modules. This will include CFD fluid
dynamic simulations utilizing with different fluid types, indirect
and direct cooling designs at single cell and module level, and
cells with different form factor.
• Importance of detailed description of model in accurately
predicting temperature of various battery cells and modules
during different charge rates
• And module design and fluid parameters
• Thermal fluid flow in battery module and modelling distribution
of fluid flow and of temperature gradients
img

Dr. Volker Null

Technology Manager Thermal Fluids
Shell Global Solutions (Deutschland) GmbH

Workshop E

11:00 am - 1:30 pm ESTABLISHING A TOOL INDEPENDENT MULTI OBJECTIVE OPTIMIZATION WORKFLOW FOR E-MOTOR DEVELOPMENT
Gereon Pusch - Department Manager E-Motor Design & Test, Great Wall Motor
Tim Schwartz - Junior CAE, Great Wall Motor Austria R&D GmbH
The trend to highly integrated products in automotive industry is
additionally increasing the complexity of E-Drives. Inverter, E-Motor
and Gearbox are melting together, and physics are interacting. It’s
not possible anymore to optimize a single component on its own,
in fact there is a need for holistic approaches and system development.
This workshop will show the current status of Great Wall Motor
Austria R&D to handle multi objective optimizations in E-Motor
Development. The target is the establishment of a tool independent
platform for simulation workflows and loops. A special focus will
be on the discussion of:
• A special focus will be on the discussion of:
• Simulation Software Interfaces
• Simulation Software version and release management
• Material data management
• Discussion and experience exchange on simulation tool
coupling: Do you prefer a versatile coupling platform or a
turnkey solution from one software supplier? What’s your
experience so far, pros and cons?
img

Gereon Pusch

Department Manager E-Motor Design & Test
Great Wall Motor

img

Tim Schwartz

Junior CAE
Great Wall Motor Austria R&D GmbH

Workshop H

11:00 am - 1:30 pm OPTIMIZING ENERGY CONSUMPTION AND NOISE PERFORMANCE IN BY-WIRE-ACTUATORS FOR HEVS
Rakib Islam - Senior Motor Engineering Specialist, Dura Automotive Systems
Hybrid architectures with disconnecting clutch
(dry or wet type)
• Enabler for manual transmission hybridization
• Clutch actuators typologies
• Clutch actuator concepts – Performance to efficiency
• Improving noise performance
img

Rakib Islam

Senior Motor Engineering Specialist
Dura Automotive Systems

1:30 pm - 2:30 pm Networking luncheon

With the introduction of the electric motor in the new generation
vehicles (EV or HEV), also comes a change in the requirements for
the cabin and passenger comfort. The original strategy of simply
recovering heat from the ICE becomes obsolete and new approaches
have to be developed. In this workshop, you will hear about
the latest trends in cabin comfort in EV and HEV and discuss current
and future developments including:
• The requirements for climate control in EV
• New solutions such as heat conductive materials and
localized heating
• The future of air-conditioning, innovations in heat pumps
• Energy efficiency optimization
img

Prof. Reinhard Radermacher

Director of the Center for Environmental Energy Engineering (CEEE)
University of Maryland

This workshop’s primary goal is to understand how automakers
are considering alternatives for e-motors.
In this workshop you will be able to:
• Current examples on EV and HEV motors with low rare
earth material
• The recent advances achieved to provide competitive
operational features
• Future challenges and opportunities
img

Dr. Sid Ali Randi

Specialist Electric Drives – R&D Electromagnetic Simulation Engineer
Renault Group, France

Workshop I

2:30 pm - 5:00 pm TESTING, THERMAL ANALYSIS AND FRICTION OPTIMIZATION OF ANGULAR CONTACT BALL BEARING FOR EV APPLICATION
Marc Paquien - Energetic Performance Leader Automotive Original Equipment, NTN-SNR Roulements
NTN-SNR tested different bearing design on high speed test
bench, with friction and temperature measurements. A simple
thermal model enabled to explain heat flow through rings, oil,
housing. This study ended in bearing design and lubrication
optimization.
• New friction challenges with high-speed
• Strategies to reduce the losses: materials vs. mechanics
• Preserving the lifetime of bearings
img

Marc Paquien

Energetic Performance Leader Automotive Original Equipment
NTN-SNR Roulements