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 Did you know that the wrapping of Easter eggs benefits from specialty light sources?
13.04.2017 | Heraeus Noblelight GmbH

nachricht To e-, or not to e-, the question for the exotic 'Si-III' phase of silicon
05.04.2017 | Carnegie Institution for Science

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: Making lightweight construction suitable for series production

More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.

Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...

Im Focus: Wonder material? Novel nanotube structure strengthens thin films for flexible electronics

Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.

"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...

Im Focus: Deep inside Galaxy M87

The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.

Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...

Im Focus: A Quantum Low Pass for Photons

Physicists in Garching observe novel quantum effect that limits the number of emitted photons.

The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...

Im Focus: Microprocessors based on a layer of just three atoms

Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.

Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Expert meeting “Health Business Connect” will connect international medical technology companies

20.04.2017 | Event News

Wenn der Computer das Gehirn austrickst

18.04.2017 | Event News

7th International Conference on Crystalline Silicon Photovoltaics in Freiburg on April 3-5, 2017

03.04.2017 | Event News

 
Latest News

DGIST develops 20 times faster biosensor

24.04.2017 | Physics and Astronomy

Nanoimprinted hyperlens array: Paving the way for practical super-resolution imaging

24.04.2017 | Materials Sciences

Atomic-level motion may drive bacteria's ability to evade immune system defenses

24.04.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>