The document summarizes an electric mini van called the BOmobil developed by Prof. Dr.-Ing. Wolf Ritschel and his team at the Institute for Electromobility at Bochum University of Applied Sciences. The BOmobil is a 4-meter long electric van designed for parcel and local delivery services. It has a range optimized for these applications and uses lithium-ion battery technology. The goal of the project was to expand competencies in electromobility in the Rhine-Ruhr region of Germany and utilize local automotive engineering expertise for low-volume commercial production.

1. Automotive Engineering in NRW:
The BOmobil Electric Mini Van
Prof. Dr.-Ing. Wolf Ritschel
mobil

2. 3 professors
27 research assistants
Approx. 30 students
2 locations:
- BOWerk,
Opelring 1
- HS Bochum,
Lennershofstrasse
Institute for Electromobility

3. 10 years of electric vehicles at Bochum University of Applied Sciences
2001 - 2003
Hans Go
1999 - 2001
Mad Doc 3
2005 - 2007
SolarWorld No. 1
2008 - 2009
BO Cruiser

4. A step towards electromobility for everyday use
BO Cruiser
The dimensions of a normal car, yet not conceived as a
racing car but rather as a realistic everyday alternative.

5. A step towards electromobility for everyday use
Sustainable Individual Mobility Car:
Aerodynamics taken over from the BO Cruiser
Space for 3 people
Hub motor
SIMCAR

6. Construction of prototypes at Bochum University of Applied Sciences

7. BOmobil: Project and development objectives
Expansion of competences in the field of electromobility in
Bochum and in the Rhine-Ruhr region
Use of local automotive engineering competences (NRW-Auto)
Build-up of competences for low-volume commercial
production at the Opel plant in Bochum
Range and driving performance optimised to fit the
application

8. Clearly defined, homogenous market demand (parcel service) of
approx. 500,000 units worldwide per year, of which roughly 1/3
every three or four years
Low marketing expenditure, due to low number of large target
customers in initial phase
Feasibility analysis in collaboration with Ernst & Young indicated
that 46% of companies interviewed expressed an interest in the
concept (Volume 2-1000 veh. / customer)
The city logistics market

9. Space frame construction
(Aluminium)
Electric drive
Wheel hub drive
Vehicle concept
Integration of
standard components
Composite components
(fibreglass, natural
fibre, carbon fibre)
“Skateboard” chassis
Li-Ion energy storage
Single-cell and safety
monitoring

10. The vehicle
mobil
Length: 4,000 mm
Width: 1,690 mm
Height: 1,650 mm
Kerb weight: approx. 1000 kg
Load capacity: 500 kg
4 wheel hub motors
Output 44 kW
Drive battery Li-Ion

11. Taxi
Local courier services
Mobile nursing services
Recovery vehicles
Service vehicles
Construction vehicles
Tradesman’s vehicles
Etc.
Derivative vehicles for different applications

12. BOmobil’s skateboard-type construction

13. BOmobil’s wheel hub motor
Construction of the wheel hub motor
• Structure of fully integrated drive
• Construction of axis and brake disc
mounting
• Position of individual components in
overall assembly
Technical data
• 235 /35 R19 wheel/tyre
• 300 Nm max. torque
• 1050 rpm max. speed
• 11kW output

14. Electronic
components
Cable sets
Use of local engineering competences
Plastic bodywork
components
Energy storage devices
Standard vehicle
components
Bochum
Vehicle registration

15. ruhrmobil-E network
Objectives:
The ruhrmobil-E network has set itself the target of
transforming Bochum into a model town in terms of
electromobility and so contribute to the “Rhine-Ruhr
Electromobility Model Region”.
In future, electric vehicles are to be designed,
built and driven in Bochum.
Focus areas
Development of electric vehicles and components
Production: electric cars, electric bicycles
Infrastructure: charging stations and networks, car sharing,
repair workshops, parts suppliers

16. If you had to invent a new technology for NRW, it would have to be
electromobility
Energy technologyComputer
science
Mechanical engineering
Mobility
Automation technology
Production technology

17. Lennershofstrasse 140
44801 Bochum
Tel.: +49 234 3210 382
Fax: +49 234 3214 992
e-mobility@hs-bochum.de
www.institut-elektromobilitaet.de
Thank you for your attention.