SYSTEM FOR THE CONNECTION OF AN ENERGY STORE

摘要

The invention relates to a system for the electrical connection of an energy store (3) to a system voltage (Us) of a system constituted of a receiving drive device and/or a feeding supply network, said voltage being applied between a positive pole (1) and a negative pole (3). The energy store (3) is connected to the positive pole (1) of the system voltage (Us) via two series-connected electric valves (4, 5). Every valve (4, 5) has a power switch (41, 51) and a diode (42, 52) connected in anti-parallel thereto. A chopper throttle (6) is connected to a line center (45) between the electric valves (4, 5) and to the negative pole (2) of the system voltage (Us). The storage voltage can thus be lower or higher than the system voltage and the energy flow direction between the system voltage and the energy store can be bidirectional. The invention further relates to a system for providing an electrically operated vehicle with traction and to such a vehicle.