Arrangement and method for charging an accumulator of a transporting device comprising an individual electric drive

PCT No. PCT/DE91/00287 Sec. 371 Date Oct. 29, 1991 Sec. 102(e) Date Oct. 29, 1991 PCT Filed Apr. 5, 1991 PCT Pub. No. WO91/17599 PCT Pub. Date Nov. 14, 1991.The arrangement for charging an accumulator of a transporting device having its own electric drive at an external charging station having a machining station includes an external control unit for controlling the machining station and the charging, a charge regulating device located in the transporting device and containing a processor with a storage unit, a device for determining an actual charge in the accumulator, and a charging current changing device connected to the processor. The processor is structured to compare the actual charge with at least one charge reference value stored in the storage unit and to act on the charging current changing device so that it changes the charging current so that the accumulator receives at least one of the at least one charge reference values stored in the storage unit; and a signal processing arrangement located in the external charging station and having a device for detecting an action of the charging current changing device on the charging and a device for sending a status signal to the external control unit for each of the at least one charge reference values. In a preferred embodiment two charge reference values are provided, a minimum charge for moving the transporting device to the next charging station and a maximum allowed charge.