Electro-mobility: Light electric vehicles (LEV)

Hsinchu (Taiwan), (PresseBox) - Electro-mobility is on the agenda: Everyone talks about battery-powered passenger cars. But electro-mobility is more: Since many years, battery-powered forklifts are used, and the number of light electric vehicles (LEV) is even higher. In China, there are sold every year about 20 millions of Pedelecs. These are bikes with electric motors, which can be used without driver license because they are only supported by electric energy if you pedal. Wheelchairs, golf caddies, and electric scooters are also regarded as LEVs. The market is quite huge and requires increasingly public charging stations. For that a standardized communication interface between battery charger and battery module is necessary. The EnergyBus (EB) organization has developed a power connector for this application. The included CAN communication has been standardized in cooperation with the CAN in Automation (CiA) international users' and manufacturers' group.

Both nonprofit organizations have released the first parts of the CiA 454 CANopen application profile for energy management systems. Mid of March, the specification in draft standard proposal status has been launched at the LEV conference in Taiwan. At this event, Electragil from Switzerland presented the first Impulse Pedelec prototype featuring a CiA 454 compliant control network. It interconnects the EB master, the motor and the pedal sensor from Electragil, the batteries from TD HiTech Energy, the battery charger from Panasonic, and the display from Acewell. It is intended to broaden the specification to other applications also requiring an energy management system. The pre-work done in the UESP project by the Fraunhofer institute will be included into the next version of the CiA 454 profile. This could be used for example in stand-alone photovoltaic systems with battery backup.

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