DEVICE, IN PARTICULAR ELECTRIC VEHICLE, LIFTING MECHANISM, SHELF-RACK SERVING UNIT WITH LIFTING MECHANISM OR FORK LIFT TRUCK, WITH ENERGY ACCUMULATOR

摘要

A device, in particular an electric vehicle, lifting mechanism, shelf-rack serving unit with lifting mechanism or fork lift truck, with an energy accumulator, from which an inverter, which feeds an electric motor, can be supplied, wherein the energy accumulator has a series connection of accumulator cells, wherein each of these accumulator cells is assigned an arrangement for controlling the charging current for the respective accumulator cell, in particular a balance circuit, in parallel, and is electrically connected, wherein each arrangement has a controllable switch, in particular bypass switch, with which the charging current can be conducted past the accumulator cell, in particular as a bypass current, wherein a means for comparing a first voltage value, corresponding to the voltage applied to the accumulator cell, with a reference voltage value is provided, the output signal of which means is fed as an actuation signal to the controllable switch, and also to a galvanically isolated signalling channel via which an analogue value can be transmitted.