Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Rapid Charging for Cars with DC and AC

24.10.2011
A flexible rapid recharging system will make it possible in the future to use the same charging socket to charge up electric cars on either direct current (DC) or alternating current (AC).

This user-friendly solution was developed by Siemens and BMW for the Modellregion Elektromobilität München – Drive eCharged project. The partners’ goal with the project is to establish their charging concept as an international standard. The system utilizes plugs standardized for AC charging that have been modified to accommodate DC charging. Until now, electric vehicles that can be charged with either AC or DC needed to use two different sockets. The project partners recently presented a prototype of the new charging system in the Transportation section of the Deutsches Museum in Munich.


Charging times and vehicle range are key aspects that influence consumer acceptance of electric cars. Today’s batteries have to be recharged more often than a conventional vehicle needs to be refueled, and the recharging process also takes several hours when a conventional socket is used. Charging times of half an hour or less can be achieved with DC technology, however. Unlike AC systems, with DC technology the power converter is located outside the vehicle at the charging station, which means the cars that use it can be made lighter. This, in turn, increases vehicle range, and combined with short charging times it therefore makes electric vehicles more attractive to fleet operators. Special charging units are required for this system, however, which is why the Drive eCharged partners have developed a user-friendly approach that offers several advantages over the systems now in use. For example, AC and DC plugs fit into the same socket on the vehicle. The new approach also standardizes communication between the vehicle and charging station for AC and DC operations, which means it will be able to support additional functions like smart charging or bi-directional charging for both charging modes in the future. Over the medium term, it is expected that DC systems will be able to charge a vehicle to the equivalent of a 100-kilometer range in just 15 minutes.

The new system was successfully tested in September 2011 with a Siemens charging station and a BMW ActiveE vehicle, and Siemens and BMW have already submitted proposals for standardizing DC charging to the International Electrotechnical Commission (IEC). The two companies are planning to continue this work on standardization. The Modellregion Elektromobilität München – Drive eCharged project is being funded by Germany’s Ministry of Transport, Building, and Urban Development.

Dr. Norbert Aschenbrenner | Siemens InnovationNews
Further information:
http://www.siemens.de/innovation

More articles from Power and Electrical Engineering:

nachricht IHP presents the fastest silicon-based transistor in the world
05.12.2016 | IHP - Leibniz-Institut für innovative Mikroelektronik

nachricht High-precision magnetic field sensing
05.12.2016 | ETH Zurich

All articles from Power and Electrical Engineering >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Shape matters when light meets atom

Mapping the interaction of a single atom with a single photon may inform design of quantum devices

Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...

Im Focus: Novel silicon etching technique crafts 3-D gradient refractive index micro-optics

A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.

Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...

Im Focus: Quantum Particles Form Droplets

In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.

“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...

Im Focus: MADMAX: Max Planck Institute for Physics takes up axion research

The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.

The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...

Im Focus: Molecules change shape when wet

Broadband rotational spectroscopy unravels structural reshaping of isolated molecules in the gas phase to accommodate water

In two recent publications in the Journal of Chemical Physics and in the Journal of Physical Chemistry Letters, researchers around Melanie Schnell from the Max...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ICTM Conference 2017: Production technology for turbomachine manufacturing of the future

16.11.2016 | Event News

Innovation Day Laser Technology – Laser Additive Manufacturing

01.11.2016 | Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

 
Latest News

Speed data for the brain’s navigation system

06.12.2016 | Health and Medicine

What happens in the cell nucleus after fertilization

06.12.2016 | Life Sciences

IHP presents the fastest silicon-based transistor in the world

05.12.2016 | Power and Electrical Engineering

VideoLinks
B2B-VideoLinks
More VideoLinks >>>