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BMW Motorrad E-Scooter Concept

BMW unveiled their latest two-wheeled concept machine, the electric drive E-Scooter, at the company’s recent Motorrad Innovation Day 2011.

The BMW E-Scooter has a daily range of 100 kilometers (62 miles), which are at the level of current maxi scooters powered by a 600 cc combustion engine, and it’s battery can be fully charged in three hours from a household outlet.

Instead of having a conventional frame, the E-Scooter has an aluminum battery casing — which also contains the electronic system required for battery cell monitoring —takes over the function of the frame. The steering head support is connected to it, as is the rear frame and the left-hand mounted single swing arm with directly hinged, horizontally installed shock absorber.

When the E-Scooter decelerates or brakes, kinetic energy is recovered, increasing its range between 10 and 20 percent depending on driving profile.

The electrical components required for the electric drive are installed on the top of the battery casing. The external battery electronics system permanently collects and monitors data such as the temperature and voltage of the battery cells, both during travel and while charging. The power electronics acts as a control system and controls the electric machine. The charging device includes a charge cable which allows the battery to be recharged at a conventional household power socket. In addition to the other components like an ISO insulation monitor, high-voltage indicator and a high-voltage distributor, a DC-DC converter is included. It is required to change high voltage to low voltage power to supply the 12 volt vehicle supply and especially for the control units.

During travel, the electric machine and power electronics are liquid-cooled, as is the charging device during charging. An electric coolant pump ensures coolant circulation through the radiator. While a coolant is commonly used for the battery in electrically powered cars, the E-Scooter concept vehicle uses an air cooling system in order to save space.

BMW Motorrad is one of the very few motorcycle manufacturers to be able to draw on its own experience and expertise in the automobile field in the development of electrically powered vehicles. Synergies are derived from the development of the BMW E-Scooter concept vehicle not just in the ready availability of technical components but also in the area of high voltage engineering and the associated safety requirements. Here for the first time, standards established by the leading automobile manufacturers relating to high voltage safety (> 60 volt) and functional reliability are being applied to a two-wheel vehicle with electric drive.[wzslider height=”400″ lightbox=”true”]

Jul 5, 2011Blagojce Krivevski
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Blagojce Krivevski

Blagojce Krivevski is physicist and green technology lover. Keep in touch with Blagojce through his email, web site, Twitter, Linkedin, Facebook and Google+.

July 5, 2011 Electric Car Newsbmw, bmw e-scooter, bmw motorrad, BMW Motorrad E-Scooter, e-scooter, electric scooter, motorrad, scooter
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