subject: Power package with great perseverance (A) [print this page] Power package with great perseverance (A)
A new high-performance battery electric vehicles finally will bring the breakthrough on long-haul. The new power package is 70 percent more efficient than comparable Panasonic cga-du14 . A single charge is enough to power a VW Golf on a stretch of 500 kilometers with electricity.BERLIN. Mirko Hannemann tinkerers career began with a scolding grandmother. Hannemann was then three years old and had Granny radio decomposed into its components. But the anger of the grandmother vanished quickly, surprisingly nimble-fingered Mirko grandson built the demolished unit back together by hand - and the music was playing again as usual.
Today Mirko Hannemann is 27 years old - and he confuses with his ingenuity far more than grandma's budget. "I liked the competition is not at all what we do," says the young manager of the Berlin-based start-ups DBM Energy. Hannemann has developed a battery for electric cars, which will leave the conventional energy of the car industry far behind.
This Hannemann has combined the best from existing technologies and filed in the details of the control technology and the combination of materials. What emerged was the so-called lithium-metal polymer (LMP), the hummingbird Alpha marketed under the name Polymer Technology.
That the exotic fowl has been named to come, not by accident: Two grams of flower nectar of the bird can fly 800 kilometers wide and is considered the fastest vertebrate that are left of each fighter makes. "The hummingbird is the most economical and efficient animal in the world," said Hannemann.
If he will lecture on his invention, he could easily pass as a student in a seminar. The company president is wearing jeans and sweaters, can grow a small beard and speaks with the naive optimism of a enjoyable Weltverbesserers. "I want to detect system errors and eliminate the others accept as normal," said Hannemann. An error, which is also inefficient in his eyes, type of batteries that had been common practice everywhere.
Hannemann was looking for a new path. Something to do so, as all do, that the young inventor is not anyway. His physics degree, he has broken off, instead he started his job at the DBM Search & Rescue Company, the technical systems developed for disaster relief. Five years ago, where he has won a contract to develop a rapid response to high-capacity battery for Canon nb-4l. After several years of research and investment of 15 million euros was clear: The technology is far more than a stopgap.
The LMP technology, worked at the Hannemann, was not new. But apart from the young Berlin hardly anyone believed in their performance. The reason is that current could flow only in the cells so far from 60 degrees Celsius, whichis inefficient. "This shortcoming, we were able to fix by any other combination of materials," says Hannemann. Thus, the battery is now also supplies between minus 40 and plus 100 degrees of energy.
The secret lies in a special layered structure. The effect is startling: During a lithium-ion battery at best an efficiency of 80 percent achieved, is the LMP battery, at 99.7 percent. "We have met the physical performance limit," said Hannemann.
Compared to conventional lead-acid batteries the hummingbird Dell inspiron 6400 batteryweighs only one tenth, and is only one third as large. For the engineers at Ruf Automobile, specializing in the refining of Porsche cars, was the most interesting. On behalf of Siemens Wind Power should call a Porsche Cayenne to the converted electric car.
When another urge cooperation with DBM Energy, Siemens, however, pulled the ripcord. The memorable justification Hannemann has listed in his little black book: "It is not present in the interests of customers, an electric car with such a large reach," he was left barely know.
