the university of cooperative education 1 electrical engineering industrial engineering medical...
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The University of Cooperative Education
www.ba-bautzen.de 1
Electrical Engineering Industrial Engineering Medical Engineering
Computer ScienceFinancial Management Public Management
twinned with Jelenia Góra
Bautzen
Conference and Exhibition on E-Mobility
www.ba-bautzen.de 2
http://verein.ba-bautzen.de
More information:
Student Project on E-Mobility
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Florian Hempel (11E-A) and Dr Daniel Raabe
BA-Bautzen
www.ba-bautzen.de
Implementation of a Practical Charging Technique for E-Bikes
Agenda
I. Introduction to E-Mobility
II. Bike Hire Scheme ‚Oberlausitz per Rad‘
III. Current charging technology
IV. Our concept for a practical charging technology for E-Bikes within the rental network
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E-Mobility
> E-Mobility = the use of electric vehicles for transportation
> E-Mobility combined with renewable energies could be one answer to global climate change, increased global population & limited resources
> Aim of the German Federal Gov. is to put 1Mio Electric Vehicles on the road by 2020.
> This seems to be unlikely considering current registration figures of E-cars (2012 only 3,000; Source: KBA).
> With respect to E-Bikes incl. Pedelecs we have already hit the 1Mio threshold according to the bike association ADFC (sales of E-Bikes 2011–200,000, Sr: Derby Cycles)
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E-Car (Renault Twizy), BEV
Charging tower
Source: zsw.bw.de
Number of E-cars on the road
Pedelec and E-Bike
Pedelec (Pedal Electric Cycle) supports the user during cycling (max. power 250 Watts and max. velocity 25km/h
E-Bike (Electric Bike)supports the user even without cycling (using the pedals) (max. power 500 Watts and max. velocity 20km/h
Pedelec
National Development Plan E-Mobility
Main objectives of the plan:
I.Improvement of energy storage/ battery technology (for increased range)
II.New vehicle technology (e.g. more efficient drive technology)
III.Development of an area wide charging grid
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Quelle: Nationaler Entwicklungsplan Elektromobilität der Bundesregierung – BMBF, 2009
http://www.elektromobilitaet-verbindet.de
Various initiatives to support this plan such as
Although the use of E-Bikeshas several advantages in terms of sustainability and local development e.g. through toursim
the further development of E-Bikes and its infrastructure is not support by current initiatives such as BAYERN-SACHSEN ELEKTROMOBILITÄT VERBINDET
one example
Bike Hire Scheme ‚Oberlausitz per Rad‘Network Facts:
>An expanding cross-border network of 20 bike rental points supporting bike toursim
>Bikes can be picked at one rental point & returned at a different rental point with no additional charge
>Rental points are independently managed by hotels, bike shops, tourist information points or local park administrations
>Complete technical service by Little John Bikes
>Opening of a new int. bike rental station in Krásna Lípa (Czech Republic) in April 2014
>More int. partners wanted!
>Unfortunetely, the scheme currently supports no E-Mobility and in particular no E-Bikes due to the lack of a practical bike charging infrastructure
>
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E-Bike charging system
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Essensial for an E-Bike or Pedelec is a sufficient battery providing sufficient range.
Unfortuenetely, these batteries have to be charged!
How do we do this?
E-BikePedelec
E-Bike charging system
The battery of an E-Bike can be charged removed from the bike
>in a separate charging station
>or without moving the battery from the bike
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to 230V socket
chargerdocking station
Battery in the bike Battery removed
to 230V socket
Drawbacks of the current system:
>Charging E-Bikes/ Pedelecs requires the use of external battery chargers that are either carried by the user to the charging st. or supplied at the charging st.
>Batteries and battery chargers are not standardized
>Charging E-Bikes during long distance rides requires also a safe environment such as a dedicated room because the charging system of an E-Bike is currently not lockable
What companies offer for bike users…
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No battery charger available at the charging point
Not a safe environmentOpen access charging pillar with 230V power sockets (CEE 7/5)
Quelle: Belectric Drive GmbH, Kitzingen
No network
Our solution
> Charging tower for partners of the bike scheme ‚Oberlausitz per Rad‘
> Having drawers for standardized and none standardized charging
> Using renewable energy
> Drawers are lockable
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