A rubber-tired gantry crane (RTG) includes an energy storage device disposed on and configured to provide power to the RTG, a primary charging device disposed on the RTG and configured to charge the energy storage device, and a secondary charging device disposed on the RTG and configured to charge the energy storage device when the RTG is idle or not in operation.

In an electric work vehicle, a power feeding assembly which connects a battery device to a power controller unit so as to feed power includes a fixed connector which is fixed to the battery device and electrically connected to the battery device, a cable harness connected to a power controller unit, and a free connector which is connected to an end of the cable harness and connectable to a fixed connector, and a connecting operation tool is configured to be movable the free connector between the connecting position in which the free connector is connected to the fixed connector and the detaching position.

The present disclosure discloses a charging station, an intelligent robot, and a charging system. The charging station includes a control chip, a charging apparatus, and a differential positioning apparatus. The charging apparatus is electrically connected to the control chip, and the differential positioning apparatus is communicatively connected to the control chip, where the control chip is configured to receive first observation information and position information of the charging station sent by the differential positioning apparatus, and send the first observation information and the position information to an intelligent robot, and configured to control the charging apparatus to charge the intelligent robot.

A power supply device for an electric work vehicle, including: a battery by which an electric work vehicle is drivable; a first connection unit for an internal inverter configured to convert DC power from the battery into AC power, and output the AC power to an internal electric device installed in the electric work vehicle; a second connection unit for an external inverter configured to convert DC power from the battery into AC power, and output the AC power to an external electric device; and a battery control unit connected to the first connection unit and the second connection unit, and configured to control charging of, and power supply from, the battery, wherein the battery control unit is configured to communicate with the external inverter side via the second connection unit to perform authentication regarding whether or not power supply to the external inverter is permitted.

A method for charging a self-propelled robotic work tool (1) in a charging station (4), comprises the steps of: the robot (1) navigating towards a charging position in the charging station (4), and sensing an attaining of a predetermined charging position of the robotic work tool (1) in the charging station (4). A charging position sensor (6a) and a sensed feature (6b) are arranged in the self-propelled robotic work tool (1) and the charging station (4). A charging procedure is initiated once said charging position is attained, and the sensor (6a) detects the sensed feature (6b) in a contactless manner.

A system includes a charging station (4) and a robotic work tool (1), which each comprises one of a sensor (6a) and a sensed feature (6b), respectively, as well as first and second charging means (5a, 5b). The sensor (6a) and sensed feature (6b) are arranged for contactless detection.

A robotic work tool (1) for use in the system comprises a charging position sensor (6a), a chargeable battery, and a charging means (5a).

A computer is programmed to allocate a plurality of electric vehicles with associated electric machines to locations to perform tasks based on the charges of the electric vehicles and electric machines and expected energy consumptions of the electric vehicles traveling to the locations and of the electric machines performing the tasks at the locations; and in response to a sum of the charges of a first electric vehicle and the electric machines associated with the first electric vehicle being less than a sum of the expected energy consumptions of the first electric vehicle traveling to a first location and of the electric machines associated with the first electric vehicle performing the tasks at the first location, instruct a second electric vehicle to travel to a second location at which the first electric vehicle will be located.

An electrified tractor includes a vehicle body, an electric motor, a battery, an inverter configured to control input-output electric power of the battery, a wheel for traveling, and a control device. On condition that the electrified tractor travels inside a restriction area determined in advance as one condition, the control device controls the inverter such that the input-output electric power of the battery falls within a specific electric power range determined in advance. The control device determines whether or not there is a possibility that the electrified tractor moves from the restriction area to outside the restriction area. In a case where an affirmative determination is made in a determination process during a restriction process, the control device expands the specific electric power range as compared with a case where a negative determination is made in the determination process.

The present invention relates to a method for controlling a torque generated by at least one electric motor (130) of an electric lift truck (100), the method comprises: detecting (210) a fulfilment of at least one criterion when the torque of the at least one electric motor (130) is in a first mode, the fulfilment of the at least one criterion indicating insufficient amount of the torque in to maintain a motion of the electric lift truck (100), triggering (220) an electrical drive (140) of the at least one electric motor (130) to generate a control signal to generate a torque being larger than the torque of the at least one electric motor (130) in the first mode to change the torque to an increased torque mode. Some aspects relate to a control unit (150), to a computer program product and to an electric lift truck (100).

Various embodiments are directed to a method for docking a robotic platform. The method may include receiving a robotic platform onto a ramp of a docking station. The docking station may include the ramp, a roller assembly, a base pad, and a roller backstop assembly. The ramp may have a first side and a second side opposing the first side. The method may further include guiding, by the roller assembly, the robotic platform as the robotic platform is being driven onto ramp such that the robotic platform continues powered travel over the ramp when the robotic platform approaches the ramp within an angle range of 0 and 15 degrees with respect to either of the first and second sides of the ramp. The method may further include receiving, by the roller backstop assembly, the robotic platform from the roller assembly and then docking the robotic platform.

A self-aligning tool guide has a holder for securing a portable power tool for working on a ceiling, a lifting mechanism, and a self-balancing chassis. The holder is mounted on the lifting mechanism. The lifting mechanism has a propulsion system for raising the holder parallel to a lifting axis. The self-balancing chassis has two wheels on a wheel axis, a drive coupled to the two wheels, and a steering system. A contact sensor serves for detecting an indirect contact of the holder with the ceiling. The chassis has a brake. A controller has a mode in which the brake is activated and the balancing of the self-balancing chassis is deactivated.