Patent ID: 9422141
Filing Date: 2016-08-23
CPC Classification: B64F,B66F,H02J,Y02E

Claim Text:
1. An energy management system for managing a current flow in a machine having a lift element being vertically movable by a motor assembly, the energy management system comprising: a power supplying bus for supplying the motor assembly; a battery source being connected to the power supplying bus; an energy storage device; an energy-storage-device controller connected between the energy storage device and the power supplying bus, for controlling a current flow between the energy storage device and the power supplying bus; sensors for detecting a height H and a movement of the lift element, said movement being selected from the group consisting of a lifting movement, a lowering movement and an immobile movement; a first calculator connected to the sensors for calculating a minimum energy E a second calculator connected to the energy storage device for calculating an energy E a comparator for calculating an Error where Error=E a third calculator for setting a lower limit I a fourth calculator for calculating an upper limit I a main controller for controlling the energy-storage-device controller as a function of I