A refrigeration cycle device includes: a compressor; a heat radiating unit that causes refrigerant to heat air supplied to a space inside a vehicle cabin; a decompression unit that decompresses the refrigerant; an outside air heat absorbing unit that causes the refrigerant to absorb heat from outside air; a waste heat absorbing unit that causes the refrigerant to absorb waste heat of a waste heat device; a shutter that opens and closes a passage for the outside air introduced into the outside air heat absorbing unit; and a control unit that closes the shutter when it is determined that an amount of waste heat of the waste heat device is larger than an amount of heat absorbed by the refrigerant in the outside air heat absorbing unit and the waste heat absorbing unit.

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 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 vehicle electrical system, particularly for a motor vehicle. The vehicle electrical system has at least two electrical system branches, a disconnecting switch device between the two electrical system branches, wherein the disconnecting switch device has a first controllable switch unit and a series circuit having a second controllable switch unit and an overcurrent protection unit, wherein the first switch unit and the series circuit are electrically connected to each other in parallel between the two electrical system branches, and a control unit which in an idle mode of the vehicle electrical system, is equipped to switch the first switch unit into an open, current-disconnecting switching state and to keep it in the current-disconnecting switching state and to switch the second switch unit into a closed, current-carrying switching state and to keep it in this current-carrying switching state. A motor vehicle with the above-mentioned vehicle electrical system is also disclosed.

A method for discharging at least one battery cell of a battery for a motor vehicle in the event of at least one specific detected fault concerning the battery. The specific fault is detected and, depending on the detection of the fault, an emergency discharge process for at least partially discharging the at least a battery cell is initiated. In doing so, the at least one battery cell is at least partially discharged during the emergency discharge process via at least one on-board electrical consumer of the motor vehicle external to the battery and/or a power supply system external to the motor vehicle.

A vehicle control method and device. The vehicle control method comprises the steps of generating a first control instruction and a second control instruction when a vehicle is in a parking state, so that a fuel cell control unit (FCU) is controlled to perform charging control on a battery management system (BMS) through the first control instruction, a vehicle control unit (VCU) is controlled to perform power-off control on a target component through the second control instruction, and the target component is a non-essential operation component when the vehicle is charged in a parking state; and generating a third control instruction when the vehicle is in a normal operating state, so that the VCU controls the BMS according to the third control instruction. According to the method, under different vehicle states of the BMS, the control instructions are sourced from different control units; after the vehicle enters the parking charging mode, the non-essential components are enabled to stop working to lower a parasitic load, thereby improving the charging efficiency of the system.

A vehicle control method and device. The vehicle control method comprises the steps of generating a first control instruction and a second control instruction when a vehicle is in a parking state, so that a fuel cell control unit (FCU) is controlled to perform charging control on a battery management system (BMS) through the first control instruction, a vehicle control unit (VCU) is controlled to perform power-off control on a target component through the second control instruction, and the target component is a non-essential operation component when the vehicle is charged in a parking state; and generating a third control instruction when the vehicle is in a normal operating state, so that the VCU controls the BMS according to the third control instruction. According to the method, under different vehicle states of the BMS, the control instructions are sourced from different control units; after the vehicle enters the parking charging mode, the non-essential components are enabled to stop working to lower a parasitic load, thereby improving the charging efficiency of the system.

The invention relates to a demolition robot (1), comprising a cable (12) intended to be connected to an electric network to power a motor (21), a pump (22) that is powered by the electric motor for generating a hydraulic flow to consumers (13), wherein the motor (21) is activable at varying thermal load values (PT), depending on the current consumer's (13) need for hydraulic power, a control unit (24) arranged to receive information about the thermal load (PT) on the motor, to determine a partial thermal damage value (SL, SM, SH) at various thermal loads (PT) on the motor. To minimize the risk of thermal damage to the motor, the control unit (24) is adapted to compare said partial thermal damage values (SL, SM, SH) with a normative partial thermal damage (A) and is adapted to limit the thermal load (PT) on the motor (21) to a maximum allowable thermal load value (PTmax), if the partial thermal damage value (SL, SM, SH) exceeds the normative partial thermal damage (A) at a predetermined value (A′).

An embodiment vehicle power management apparatus includes a memory configured to store a threshold state of charge (SOC) and a processing device functionally connected with the memory, wherein the processing device is configured to set a power management mode to a camping mode, identify a battery SOC, identify whether the battery SOC is greater than or equal to the threshold SOC, and enter the camping mode to allow an operation of a first vehicle function and limit an operation of a second vehicle function in response to the battery SOC being greater than or equal to the threshold SOC.

An energy storage system is provided for an electric vehicle. The energy storage system comprises a first energy storage source. The first energy storage source includes an ammonia tank configured to hold ammonia, an ammonia converter configured to receive ammonia from the ammonia tank and convert the received ammonia into hydrogen, and a fuel cell system communicating with the ammonia converter and configured to generate output power from hydrogen that is received from the ammonia converter.