A working vehicle includes a drive unit having inverters, AC motors, hydraulic pumps, a battery, a controller, a battery management system, a switch, an electromagnetic contactor, and a display unit, and the switch is signal-connected to the controller, a stop signal is transmitted to the controller when the switch is turned off, and the controller performs stop control in which the AC motors are operated during a term to thereby set a residual voltage to be lower than a predetermined set voltage.

A control system of a power machine can be configured to allow certain power machine functionality based on a wireless connection with a mobile device. For example, a power machine can operate in a startup mode providing limited functionality to an operator (e.g., engine power, but no workgroup actuators). Access to additional power machine functionality (e.g., full functionality) can then be permitted based on establishing a wireless connection to a mobile device that corresponds to an operator profile for the power machine.

A power machine can include a frame, a lift arm, and one or more electrical devices for control of one or more work elements. The electrical devices can be controlled to improve positional accuracy for work elements during work operations, to improve power management and customer experience (e.g., to provide smoother ride during drive operations), and to provide float functionality for work elements.

The present disclosure relates to a power distribution architecture for an off-road vehicle. The power distribution architecture includes a work circuit and a propel circuit and is configured for facilitating bi-directional power exchange between the work circuit and the propel circuit.

A disclosed shovel includes a hydraulic pump, a hydraulic actuator driven by hydraulic fluid supplied from the hydraulic pump, an electric motor configured to drive the hydraulic pump, a power storage device configured to be chargeable with power from an external power source to supply driving power to the electric motor, an input device configured to receive input from a user, an imaging device configured to acquire information about surroundings of the shovel, and a control device configured to set a target value of a charge amount of the power storage device, the power storage device being charged with power supplied from the external power source, in response to a predetermined input received by the input device.

A display unit controller of a work vehicle includes a plurality of high-voltage charging systems, at least one of working equipment or a traveling device being driven by an electric motor, the display unit controller including: a charging/operation determination unit that functions as a detection unit detecting an abnormality for each of the charging systems and functions as a determination unit determining availability of work or traveling of the work vehicle; and a display control unit varying a charging availability indication indicating presence or absence of the abnormality for each of the charging systems according to the presence or absence of the abnormality for each of the charging systems based on a detection result of the detection unit, and varying an operation availability indication indicating availability of work or traveling according to the availability of work or traveling based on a determination result of the determination unit.

The present disclosure relates to a power supply device for an electric excavator, the power supply device including a power supply unit configured to supply power of a battery to an electric motor unit, a first charging port connected to the power supply unit and configured to supply first external power to the battery, an on-board charger (OBC) connected to the power supply unit and configured to convert alternating current into direct current when alternating current power is inputted, and a second charging port connected to the OBC and configured to supply second external power to the OBC, in which the power supply unit supplies charging power of the OBC or supplies the charging power of the OBC and power of the battery power to the electric motor unit on the basis of the amount of required power of the electric motor unit and the amount of charging power of the OBC.

A method for managing state of charge of a battery of an electric work vehicle to be ready to return to work at a return to work time that coincides with an end of a duration of immobilization. A charge mode is selected via a user interface. An initial state of charge of the battery and a target operational state of charge of the battery are used to calculate a targeted charge increase. A charge cycle comprising a charge rate is selected based on the charge mode and the targeted charge increase. A charging start time is calculated such that at the return to work time an actual state of charge of the battery corresponds to the target operational state of charge. The temperature of the battery is adjusted to be a target temperature at the charging start time. The charge cycle is started at the charging start time.

A work machine includes an engine for driving a primary working unit. At least one hydraulically powered auxiliary working unit is powered by a hydraulic pump. The engine and an electric motor both provide power to the hydraulic pump via a planetary gear set which sums the power inputs from the engine and the electric motor. The pump speed of the hydraulic pump is thereby decoupled from the engine speed of the engine.

A working machine includes an auxiliary system carried by the working machine, one or more batteries and an onboard thermal transfer system. The one or more batteries power an electrical system of the working machine. The onboard thermal transfer system utilizes a coolant configured to remove at least a portion of heat generated by the one or more batteries during charging or discharging of the one or more batteries and using the coolant heated by the thermal transfer system to heat the auxiliary system.