An energy supply module, an energy arrangement and a vehicle

Abstract

It is provided an energy supply module (100) for supplying electrical energy to a crane (130). The crane is arranged to be mounted on a crane carrier (120). The energy supply module comprises an energy storage (102). The energy supply module further comprises a charger (104) to charge the energy storage. The energy supply module further comprises a mechanical interface (108) to mount the energy supply module to the crane carrier. The energy supply module further comprises an electrical interface (106) to connect the energy supply module with an electric drive unit (140) driving the crane.

Description

Field

[0001] Examples relate to an energy supply module, an energy arrangement and a vehicle crane as set out in the appended set of claims.Background

[0002] In the construction industry, the prevalent use of combustion engine-powered cranes presents some challenges. These cranes may emit different pollutants, such as nitrogen oxides and particulate matter, which can degrade air quality and pose health risks to workers and nearby residents. Additionally, the noise generated by the combustion engine of such cranes can create noise pollution, which is problematic in urban areas where construction sites are often close to residential neighborhoods. The reliance on diesel / gasoline fuel can also lead to high operational costs due to fluctuating fuel prices. Furthermore, the use of non-renewable resources raises sustainability concerns. Energy emissions from these engines contribute to environmental degradation, prompting a growing demand for technologies that reduce emissions, decrease noise pollution, and provide a more sustainable approach to crane operations to ensure a cleaner and quieter environment.Summary

[0003] An example relates to an energy supply module for supplying electrical energy to a crane. The crane is arranged to be mounted on a crane carrier. The energy supply module comprises an energy storage. The energy supply module further comprises a charger to charge the energy storage. The energy supply module further comprises a mechanical interface to mount the energy supply module to the crane carrier. The energy supply module further comprises an electrical interface to connect the energy supply module with an electric drive unit driving the crane.Brief description of the Figures

[0004] Some examples of apparatuses and / or methods will be described in the following by way of example only, and with reference to the accompanying figures, in which Fig. 1 illustrates an example of an energy supply module for supplying electrical energy to a crane; Fig. 2 illustrates an example of an energy arrangement for supplying energy to the crane; Fig. 3 illustrates an example of a block diagram of the energy arrangement; Fig. 4 illustrates an example of an energy arrangement for supplying energy to the crane; Fig. 5 illustrates an example of an energy arrangement for supplying energy to the crane; Fig. 6 illustrates an example of an energy arrangement for supplying energy to the crane; Fig. 7 illustrates an example of an energy supply module; and Figs. 8A and 8B illustrate an example of the energy supply module from a front view and a rear view. Detailed Description

[0005] Some examples are now described in more detail with reference to the enclosed figures. However, other possible examples are not limited to the features of these embodiments described in detail. Other examples may include modifications of the features as well as equivalents and alternatives to the features. Furthermore, the terminology used herein to describe certain examples should not be restrictive of further possible examples.

[0006] Throughout the description of the figures same or similar reference numerals refer to same or similar elements and / or features, which may be identical or implemented in a modified form while providing the same or a similar function. The thickness of lines, layers and / or areas in the figures may also be exaggerated for clarification.

[0007] When two elements A and B are combined using an "or", this is to be understood as disclosing all possible combinations, i.e. only A, only B as well as A and B, unless expressly defined otherwise in the individual case. As an alternative wording for the same combinations, "at least one of A and B" or "A and / or B" may be used. This applies equivalently to combinations of more than two elements.

[0008] If a singular form, such as "a", "an" and "the" is used and the use of only a single element is not defined as mandatory either explicitly or implicitly, further examples may also use several elements to implement the same function. If a function is described below as implemented using multiple elements, further examples may implement the same function using a single element or a single processing entity. It is further understood that the terms "include", "including", "comprise" and / or "comprising", when used, describe the presence of the specified features, integers, steps, operations, processes, elements, components and / or a group thereof, but do not exclude the presence or addition of one or more other features, integers, steps, operations, processes, elements, components and / or a group thereof.

[0009] Fig. 1 illustrates an example of an energy supply module 100 for supplying electrical energy to a crane 130. The crane 130 is arranged to be mounted on a crane carrier 120. In some examples, the crane is a loader crane (also referred to as a truck-mounted crane). A loader crane is mounted on a vehicle such as a truck or trailer. A loader crane may comprise one or more hydraulic booms that can be extended and retracted to reach various distances and heights. These one or more hydraulic booms are often articulated, allowing for precise positioning and increased maneuverability in confined spaces. In some other examples, the crane may be a tower crane, a mobile crane, an overhead crane, a gantry crane, a crawler crane, an aerial work platform or a floating crane. In some examples, the crane carrier may be a truck, for example the crane is a loader crane, it may be mounted on a truck. In some other examples, the crane carrier may be a trailer, a rail vehicle, a barge, a specialized off-road vehicle, a ship, an aerial work platform or a floating platform or the like.

[0010] The energy supply module 100 comprises an energy storage 102. The energy storage 102 is the primary reservoir for storing electrical energy. In one example, the energy storage 102 comprises a battery pack. A battery pack is an assembly of multiple battery cells configured to provide the required voltage and capacity. The battery pack may consist of various types of cells, including lithium-ion, nickel-metal hydride, or solid-state batteries. Lithium-ion cells may have a high energy density and long cycle life, making them suitable for applications requiring sustained energy output. Nickel-metal hydride cells may offer robustness and safety, with a lower risk of thermal runaway compared to lithium-ion cells. Solid-state batteries comprise solid electrolytes that provide enhanced safety and higher energy densities due to their solid-state construction, which eliminates the flammable liquid electrolytes found in other battery types. In some examples, the energy storage 102 includes supercapacitors. Supercapacitors may have a higher power density, which results in rapid charge and discharge cycles, which may be suitable for peak load demands during crane operations. In some examples, a combination of batteries and supercapacitors is used in a hybrid configuration. The energy storage 102 may also comprise a thermal management system. The thermal management system may include active cooling mechanisms, such as liquid cooling loops, which circulate coolant through the battery pack to remove excess heat. Additionally, passive cooling methods, such as heat sinks and thermal conductive materials, may be used to dissipate heat away from the cells.

[0011] The energy supply module 100 further comprises a charger 104 to charge the energy storage 102. The charger 104 is a device used to replenish the energy levels in the energy storage 102. It works by converting external electrical power into a suitable form and voltage to charge the energy storage. The charger 104 regulates the flow of electrical current into the battery cells, ensuring they are charged safely and efficiently. In some examples, the charger 104 may comprise power electronic components such as rectifiers, inverters, transformers, converters and / or power factor correction (PFC) circuits or the like. In some examples, rectifiers are used to convert the alternating current (AC) power from the grid into the direct current (DC) power, which is necessary for charging the battery. Inverters may be included to convert DC power back to AC for certain applications or to provide AC output. Transformers are employed to step down or step up the voltage to match the required charging voltage for the battery cells. Converters change DC voltage levels to match the needs of the battery, such as stepping down a higher voltage to the required charging voltage. PFC circuits may be integrated to improve the efficiency of power conversion by ensuring that the current drawn from the grid is in phase with the voltage, reducing reactive power losses.

[0012] The charger 104 may first receive AC power from an external power source. The AC power may be fed into a rectifier, which converts the AC into DC. This DC power may then be passed through a PFC circuit to optimize the power factor, ensuring maximum efficiency and reducing losses. The optimized DC power may then be transformed to the appropriate voltage level using a transformer. If the battery requires a different form of power, an inverter may be used to convert DC back to AC, or a DC-DC converter can step down the voltage to the desired level.

[0013] The charger 104 may be connected to the energy storage 102 via a high-power DC connector designed to handle the specific voltage and current requirements of the battery pack. For example, the interface may be an Anderson Powerpole connector, which can handle high currents and voltages required for efficient charging. These connectors are modular and can be configured for different power levels, providing flexibility for various applications. Another example may be an Amphenol SurLok Plus connector, which is designed for high-current, high-voltage applications and provides a secure, quick-connect interface. These high-power DC connectors ensure secure and efficient power transfer from the charger to the energy storage 102, accommodating the high current levels needed for rapid charging. Additionally, these connectors include safety features such as interlocks, insulation, and sometimes integrated temperature sensors to monitor the connection and ensure safe operation during the charging process.

[0014] The charger 104 may be connected to the external power source, such as the power grid, using a standard interface to ensure compatibility and reliability. In one example, the onboard charger connects to the power grid using a Type 2 (Mennekes) connector, common in Europe. This connector handles an input voltage of 400V AC at 32A for three-phase charging, providing a total power output of up to 22kW. In North American, a Type 1 (SAE J1772) connector may be used, which typically handles 240V AC at 30A for single-phase charging.

[0015] For example, the charger 104 may be an onboard charger that converts AC power to the appropriate DC voltage required by the battery. The onboard charger may include power factor correction (PFC) circuits to optimize the efficiency of the power conversion and reduce electrical noise. This setup allows the charger to efficiently convert and regulate the incoming AC power from the grid, ensuring the battery receives a stable and optimal charging current. In some examples, the onboard charger may interface with DC fast charging systems using the CCS (Combined Charging System) connectors in Europe and the US. These systems support high-power charging, typically ranging from 50kW to 350kW, with voltage levels up to 1000V and current levels up to 500A. The onboard charger may include high-power DC-DC converters to step down the voltage to the appropriate levels for the battery pack.

[0016] In some examples, the charger 104 comprises a control system that continuously monitors the state of charge (SOC), voltage, current, temperature of the battery cells, state of health (SOH) of the battery cells, a GPS location of the energy supply module 100 etc. The control system may include balancing circuits to ensure equal charge distribution among cells and temperature sensors to monitor and regulate the charging temperature. For instance, the charger 104 may provide a high current during the initial charging phase when the battery is at a low SOC, and gradually reduce the current as the battery approaches full charge to prevent overcharging and extend battery life. Additionally, the charger 104 may communicate with external systems via protocols such as CAN bus or Ethernet, providing real-time updates on charging status and battery health, and allowing for remote monitoring and control. In some examples, this control system may comprise the control of the thermal management system of the energy storage system. Based on this obtained real-time data, the charger 104 may controlled to adjust the charging rate dynamically. In some examples, the charger control system may communicate with the control arrangement 110 and / or it may be a part of the control arrangement 110 as described below.

[0017] The energy supply module 100 further comprises a mechanical interface 108 to mount the energy supply module 100 to the crane carrier 120. The mechanical interface 108 is designed to provide a robust and secure attachment, ensuring the stability of the energy supply module during crane operations. Structurally, the mechanical interface typically includes components such as brackets, rails, frames, and fasteners made from high-strength materials like steel or aluminum alloys. These materials are chosen for their ability to withstand significant mechanical stresses, resist corrosion, and maintain structural integrity under varying environmental conditions. The mechanical interface 108 is configured to allow for quick and efficient mounting and dismounting of the energy supply module 100. Therefore, the energy supply module 100 may be rapidly mounted to or un-mounted from the crane carrier 120, minimizing downtime during installation and maintenance. Additionally, the mechanical interface 108 may be compatible with standard industrial dimensions and equipment, such as those of a Euro pallet. This may ensure that it may be used with commonly available tools and fixtures for ease of handling and installation. This standardization facilitates the integration of the energy supply module into a wide range of crane systems, enhancing its versatility and operational efficiency.

[0018] The energy supply module 100 further comprises an electrical interface 106 to connect the energy supply module 100 with an electric drive unit 140. The electric drive unit 140 is driving the crane 130. The electrical interface is a system that facilitates the transmission of electrical media between different components. The electrical interface 106 connects the energy storage 102 and / or a control arrangement 110 to the electric drive unit 140. For example, electrical media like electrical power, control signals and / or data may be transmitted. In some examples, the electric drive unit 140 is part of the energy supply module 100, making the electrical interface 106 an internal interface that connects the components within the same module. In this configuration, the components of the electric drive unit (such as the electric motor, inverter, and one or more hydraulic pumps) are all housed together with the energy storage unit 102 and charger 104 within an external housing 114, allowing for a compact and integrated system. In some other examples, the electric drive unit 140 and the energy supply module 100 are separate modules, with the electrical interface 106 serving as an exterior interface. This exterior electric interface 106 connects the components of the energy supply module 100, such as the energy storage unit 102 and the charger 104, to the separate components of the electric drive unit 140, like the electric motor and hydraulic pumps.

[0019] The electrical interface 106 may be implemented using various components. For high-voltage and high-current applications, connectors such as Anderson Powerpole and Amphenol connectors can be used. For medium voltage ranges, connectors like Molex Mini-Fit Jr., TE Connectivity's Dynamic Series connectors, and Delphi Metri-Pack connectors are appropriate. For other applications, Standard AC Power Outlets and Plugs (e.g., Type A, Type B, Type C, Type E / F) may be used. For data and control signal transmission, the electrical interface may include RJ45 connectors for Ethernet, D-sub connectors for RS-485, and CAN bus connectors. USB connectors may be also used for both data and power transfer in various applications. Protective casings and enclosures may be used to shield these components from environmental factors and physical damage. In some examples, the electric interface 106 may further comprise mounting hardware (such as brackets, clamps, fasteners), cable management systems (such as trays, conduits, organizers), grounding and shielding components (such as straps, shields, ferrite beads), grommets and seals for insulation, heat sinks and cooling components to dissipate heat, and labeling and identification tags for maintenance.

[0020] The electrical interface 106 may comprise a power distribution unit (PDU) that facilitates power transmission to different components for example with the same or different voltage requirements. The PDU, integrated within the electrical interface 106, may distribute electrical power from the energy storage 102 to multiple outputs. If different components require different voltages, voltage converters are placed between the energy storage 102 and the electrical interface 106 to adjust the voltage accordingly. This setup ensures that each component receives the appropriate voltage and power needed for efficient operation.

[0021] In some examples, the electrical interface 106 may comprise a first power transmission interface for transmitting power from the energy storage 102 to an electric machine 142. The electric machine 142 may drive a hydraulic pump 144 which, in turn, operates a crane boom of the crane 130. The electric machine 142 may be an electric motor. The electric motor 142 may comprise or be connected to components such as an inverter to convert DC power from the battery to AC power for the electric motor, ensuring efficient and precise control of the hydraulic pump 144. In some examples, there may be a gearbox flanged between the electric motor and the hydraulic pump 144 (see also Figs. 2, 5 and 6 below). The use of an inverter allows for variable speed control of the electric motor, optimizing the performance and energy efficiency of the crane operations. The electric machine 142 may also include (motor) controllers and power electronics that manage the flow of electricity, providing smooth and responsive operation of the crane's hydraulic systems. For example, the first power transmission interface transmits voltage around 48, 96V, 120V, 650V, 800V or in between these voltage levels for the electric motor 142 that powers the hydraulic pump. For example, a nominal voltage range may be + / - 20% of 48V or 96V above respective 48V or 96V.

[0022] In some examples, the electrical interface 106 may instead or additionally comprise a second power transmission interface for transmitting power from the energy storage 102 to the crane carrier 120. This second interface may be used to power various auxiliary systems on the crane carrier, including but not limited to lights, control circuitry, radio, GPS units, heating and cooling systems, onboard diagnostic systems, emergency backup systems, communication devices, sensors for load and position monitoring, and safety systems such as alarms and emergency stop mechanisms. For example, the second power transmission interface transmits voltage around 24V for operation of the crane carrier 120.

[0023] In some examples, the electrical interface 106 may instead or additionally comprise a signal transmission interface for transmitting control signals and data. This interface is crucial for the communication between the control arrangement 110 and the drive unit 140 and / or a central crane controller, enabling precise control of the crane's operations. Control signals may be used to regulate the speed and torque of the electric motor, adjust the hydraulic pump settings, and manage the positioning and movement of the crane boom as described below. The signal transmission interface may utilize communication protocols such as CAN bus, Ethernet, or RS-485 to ensure reliable and efficient data exchange. Additionally, it may comprise interfaces for remote control and monitoring, allowing operators to manage crane functions from a distance, enhancing safety and operational flexibility.

[0024] The energy supply module 100 as disclosed herein allows a crane to operate electrically (electric only or as hybrid operated, see below), thereby significantly reducing energy emissions and promoting sustainability. This shift to electric crane operations reduces reliance on fossil fuels, leading to lower fuel costs and a substantial decrease in environmental pollution. Furthermore, a quieter operation of an electrically powered crane is achieved. This enhances working conditions on construction sites, particularly in urban areas where noise pollution is a concern, benefiting both workers and nearby residents by creating a more pleasant and less disruptive working environment. Additionally, the mechanical interface as described above allows for easy installation of the energy supply module to the crane carrier, ensuring compatibility with existing crane systems. This feature simplifies the transition to electric power, making it accessible and practical for a wide range of crane models. Moreover, if the crane has a second combustion engine-powered drive system (see below), the electric drive system 140 with the energy supply module 100 may be used in some cases, providing flexibility in operation. Furthermore, the energy supply module may be shared among different carriers, increasing flexibility and reducing costs. This modular approach allows for efficient resource utilization and operational versatility, as the same energy supply module can be used across multiple crane carriers. Overall, the energy supply module 100 offers a comprehensive solution that reduces energy emissions, lowers operational costs, enhances working conditions, and provides a practical and sustainable option for modern crane operations.

[0025] In some examples, energy supply module 100 comprises an external housing 114. The energy storage 102 and the charger 104, and in some examples further components like a control arrangement, are arranged in the external housing. The external housing 114 is connected to the mechanical interface 108 and the electrical interface 106. The external housing 114 may be constructed from steel or aluminum (or a composite material) to ensure structural integrity and protection for the internal components. In some examples, the electrical interface may be integrated into an exterior wall of the external housing 114 to provide flexibility in connecting to the crane's electric drive unit 140. In some examples, the electrical interface may be integrated into a side wall or into the bottom or the top of the external housing 114. This positioning allows for easy access and efficient cable routing, depending on the specific configuration and requirements of the crane system. In some examples, the electric interface 106 is designed as a panel or set of connectors that are securely attached to the housing using screws, bolts, and sealed gaskets to ensure a tight and weatherproof connection. Internal wiring from the energy storage and charger is routed to these connectors through conduit or cable management systems within the housing.

[0026] In some examples, the mechanical interface 108 may be connected to the external housing 114 using welded joints, bolts, screws, or the like or a combination thereof. The external housing 114 dimensions in width and length may be based on a Euro pallet size, i.e., 120 cm in length and 80 cm in width. This standardized sizing ensures compatibility with common transportation and handling equipment, such as forklifts, which can maneuver and position the energy supply module efficiently. The height of the external housing 114 may be more than 30 cm and less than 120 cm. The internal arrangement of the energy storage and charger within the external housing 114 may be optimized for cooling and maintenance access. The housing 114 may comprise ventilation openings or cooling fans to manage the thermal load generated during operation and charging. The housing's structural design ensures that all components are securely mounted and protected from external impacts, vibrations, and environmental factors, providing a reliable and durable solution for supplying electrical energy to the crane.

[0027] In some examples, the energy supply module 100 and at least part of the electric drive unit 140 are physically separated from each other by at least one of the crane carrier 120 and the external housing 114 of the energy supply module 100. The electric drive unit 140 typically may comprise an electric machine, such as an electric motor and an inverter, and one or more hydraulic pumps. The electric machine converts electrical energy into mechanical energy to drive the hydraulic pump, which powers the crane's lifting mechanisms like the crane boom. The electric drive unit 140 may be permanently integrated into the crane carrier 120. In this case, the electric drive unit 140 may be permanently installed on the crane carrier 120. For example, the electric drive unit 140 may be integrated into a lower compartment or side section of the crane carrier 120, providing a fixed installation that ensures consistent performance and minimizes the risk of damage during crane operation.

[0028] If the energy supply module 100 comprises the external housing 114, the energy storage unit 102 and the charger 104 are enclosed within the external housing 114 as described above, while the electric drive unit 140 and its components remain outside this external housing 114. If the energy supply module 100 does not comprise an external housing 114, the energy storage 102 and the charger 104 may be directly connected to the mechanical interface 108. The energy supply module 100 is separated from the electric drive unit 140 in that the electric drive unit 140 is not mounted to the mechanical interface 108. This means that the electric drive unit 140 and the energy supply module 100 are physically distinct units. In both cases, the energy supply module 100 is detachably connectable to the crane carrier 120 via the mechanical interface 108. The electric drive unit 140 may be permanently installed into the crane carrier 120. This means that the electric drive unit 140 and the energy supply module 100 may be mounted on different parts of the crane carrier 120 without a shared housing and / or without a shared mechanical mounting interface. Because the electric drive unit 140, which also comprise one or more hydraulic pumps is installed permanently hydraulically nothing is disconnected and connected after the installation of the electric drive unit 140 which makes sure there are impurities in the hydraulic oil system.

[0029] This described modular separation of the energy supply module 100 and the electric drive unit 140 may be advantageous in hybrid crane systems that utilize both a combustion engine and / or an electric drive unit (see also Figs. 2 to 6). When electric drive 140 is required, such as in areas with strict noise and emission regulations, the energy supply module 100 can be quickly mounted to power the electric drive unit 140. Conversely, when the electric drive unit 140 is not necessary, the energy supply module 100 may be detached, allowing the crane to operate using the combustion engine alone. This flexibility maximizes operational efficiency, reduces unnecessary weight, and extends the operational range of the crane, providing a versatile solution for various construction site requirements. Additionally, this approach enhances sustainability by reducing emissions and minimizing environmental impact, aligning with modern regulations and societal expectations for greener construction practices.

[0030] In some other examples, at least part of the electric drive unit 140 may be arranged within the energy supply module 100 (see also Fig. 7). This configuration means that some or all components of the electric drive unit 140 (such as the electric machine, inverter, one or more hydraulic pumps), are housed within the same external housing 114 as the energy storage unit 102 and the charger 104 etc. That means these some or all parts of the electric drive unit 140 are connected to the mechanical interface 108, allowing the entire system to be detachably mounted as a single module to the crane carrier 140. This offers advantages, particularly in hybrid crane operations. By having the complete energy supply module 100, including the electric drive unit 140, as a detachable unit, it allows for seamless transitions between different modes of operation. For example, when electric drive is needed in environments with strict noise and emission regulations, the entire energy supply module with the integrated electric drive unit can be quickly mounted onto the crane carrier 120. Conversely, when the electric drive is not required, the entire unit can be detached, allowing the crane to operate using only the combustion engine. This modularity enhances operational flexibility, reduces unnecessary weight when the electric drive is not in use, and simplifies maintenance and upgrades. Another may be a night mode as described below in more detail.

[0031] In some examples, the energy supply module 100 is configured to be detachably connected to the crane carrier 120 via the mechanical interface 108 and is further configured to be detachably connected to the electric drive unit 140 via the electrical interface 106. Detachably connected may refer to the energy supply module 100 being securely attached to and efficiently removed from the crane carrier 120 by the mechanical interface 108 allowing for rapid disassembly and reassembly without the need for permanent fixtures. This is to be distinguished from permanently installed components. This type of connection allows the module to be securely fastened yet quickly disconnected when needed. The mechanical interface 108, which enables this detachable connection, is designed to provide a robust and secure attachment, ensuring the stability of the energy supply module during crane operations.

[0032] Structurally, the mechanical interface 108 typically includes components such as brackets, rails, frames, and / or fasteners as described in more detail below.

[0033] The detachable mechanical interface 108 ensures that the energy supply module 100 can be quickly and easily mounted or removed, enhancing operational efficiency and reducing downtime. This modularity provides flexibility for hybrid crane operations, allowing the crane to switch between electric and combustion engine drives as needed. It also facilitates maintenance and upgrades, as the energy supply module can be serviced independently of the crane carrier and electric drive unit. Furthermore, this setup supports sustainability efforts by enabling the use of electric power in areas with strict noise and emission regulations while allowing for the efficient use of combustion engines when appropriate.

[0034] In some examples, the mechanical interface 108 may comprise one or more recesses for handling by forklift equipment. The mechanical interface 108 may comprise two parallel carrier beams with specifically designed one or more recesses that accommodate the tines of a forklift equipment. Forklift equipment may refer to different types of material handling vehicles, including forklift trucks, pallet jacks, and hand trucks, equipped with forks or prongs used for lifting, moving, and stacking heavy loads. The one or more recesses may be shaped and positioned to align with standard forklift dimensions, ensuring secure lifting and handling. The design may resemble a Euro pallet, with multiple recesses distributed along the length of the carrier beams to provide flexible handling options. Each of the one or more recesses may be reinforced with high-strength materials, such as steel plates, to prevent deformation and ensure durability under heavy loads. The dimensions and positioning of the recesses are such that they allow for easy insertion and removal of the forklift tines, enabling quick and efficient transport of the energy supply module.

[0035] In some examples, the mechanical interface 108 may comprise one or more brackets configured to couple into corresponding one or more brackets on the crane carrier 120. The one or more brackets may be designed to provide a secure, interlocking connection between the energy supply module 100 and the crane carrier 120. Each of the one or more brackets of the mechanical interface 108 may comprise a hook or slot that aligns with a corresponding bracket on the crane carrier 120. The coupling mechanism may involve quick-release pins or bolts, which secure the brackets together, allowing for rapid attachment and detachment without the need for specialized tools. The one or more brackets may also comprise alignment guides to ensure precise positioning during installation, reducing the risk of misalignment and ensuring a stable connection. The mechanical interface 108 may thus feature a series of strategically placed hooks, slots, and alignment guides that form a robust and reliable coupling system when engaged with the corresponding brackets on the crane carrier 120.

[0036] In some examples, the mechanical interface 108 may comprise one or more rails configured to fit into one or more corresponding guide rails on the crane carrier 120. The one or more rails may be configured to slide into the corresponding one or more guide rails on the crane carrier 120, providing a guided and secure attachment method. The one or more rails may be constructed from hardened steel to ensure durability and resistance to wear. The one or more guide rails on the crane carrier 120 are dimensioned to match the one or more rails of the mechanical interface 108, allowing for smooth insertion and precise alignment. Locking mechanisms, such as spring-loaded latches or manual locks, may be integrated into the rail system to secure the energy supply module 100 once it is in position.

[0037] In some examples, the mechanical interface 108 may comprise one or more magnets configured to attach to corresponding metallic surfaces on the crane carrier 120. The one or more magnets may be high-strength neodymium magnets, which provide a strong holding force to secure the energy supply module to the crane carrier. In some examples, the mechanical interface 108 comprises one or more magnets configured to attach to corresponding metallic surfaces on the crane carrier 120. The one or more magnets may be high-strength neodymium magnets, samarium-cobalt magnets, ferrite magnets, or Alnico magnets. The metallic surfaces on the crane carrier 120 may include steel plates or other ferromagnetic materials that provide a strong attachment point for the magnets. These plates may be strategically positioned to align with the one or more magnets of the mechanical interface 108, ensuring a secure and stable connection during crane operations. The one or more magnets may allow for a quick and tool-free attachment method, where the magnets firmly grip the metal surfaces. To enhance safety, the magnetic interface may also include a manual locking mechanism that provides additional security in the event of magnetic failure.

[0038] In some examples, the mechanical interface 108 may comprise a locking element or receiver element of a quick release mechanism. The quick release mechanism may be configured to allow the energy supply module 100 to be swiftly and securely mounted to or detached from the crane carrier 120. The locking element may include various types of quick-release mechanisms such as spring-loaded pins, cam-locks, and other devices that engage with corresponding receiver elements on the crane carrier 120. For example, the locking element may comprise snap-fit joints, which use interlocking tabs and slots to secure the module quickly and easily. In another example, the locking element may comprise rotary latches, which employ a rotating mechanism to lock the module in place, providing a secure connection that can be disengaged with a simple twist. In yet another example, the locking element may comprise lever latches, which use a lever action to tighten or release the connection, ensuring a robust and adjustable fit. Another example includes spring-loaded latches, which incorporate a spring mechanism that automatically engages and holds the module securely. Finally, the locking element may comprise slide latches, which use a sliding action to lock the module into position. These various mechanisms are designed to ensure a tight and secure fit, preventing any movement during crane operation.

[0039] In some examples, the energy supply module 100 further comprises a voltage converter (not shown in Fig. 1) which is configured to adjust the voltage of the energy supply between the energy storage 102 and the electric drive unit 140. The voltage converter may be as described above be a part of the charger 104 or it may be a separate component. For example, the voltage converter may adjust the voltage output of the energy storage 102 to a first voltage, for example 24V and deliver it to the interface (or the PDU). In another example, the voltage converter may adjust the voltage output of the energy storage 102 to a second voltage, for example 96V and deliver it to the interface (or the PDU).

[0040] In some examples, the energy supply module 100 further comprises a control arrangement 110. The control arrangement 110 comprises a parameter control circuitry configured to control the energy supply module 100. This means that the control arrangement 110 can manage the operations of one or more components of the energy supply module 100 and / or components connected to the energy supply module 100, for example, via the electrical interface 106. In some examples, controlling the energy supply module 100 comprises controlling at least one of: the electric machine driven by the energy supply module 100, the energy storage 102, the charger 104, and a hydraulic pump of the energy supply module 140 driving a crane boom of the crane 130.

[0041] The control arrangement 110 may, for example, control the battery, regulating its charge and discharge cycles to ensure optimal performance and longevity. This involves monitoring battery health, temperature, and state of charge to prevent overcharging or deep discharge, which can damage the battery cells. In some examples, the control arrangement 110 may control the charger 104 ensuring it provides the correct voltage and current to the battery during charging cycles. As described above this may involve a continuously monitoring and controlling of the state of charge (SOC), voltage, current, and temperature of the battery cells. Further, this may involve balancing circuits to ensure equal charge distribution among cells and temperature sensors to monitor and regulate the charging temperature. For instance, the charger 104 may provide a high current during the initial charging phase when the battery is at a low SOC, and gradually reduce the current as the battery approaches full charge to prevent overcharging and extend battery life. The control arrangement 110 may also facilitate the charger 104's communication with external systems via protocols such as CAN bus or Ethernet, providing real-time updates on charging status and battery health, and allowing for remote monitoring and control. This control arrangement 110 may also oversee the thermal management system of the energy storage system, dynamically adjusting the charging rate based on real-time data. In some examples, the control arrangement 110 may control communication between the energy supply module 100 and external devices, such as a crane controller or a remote monitoring system. This communication can be facilitated through various protocols and interfaces, ensuring real-time data exchange and system coordination. In some examples, the control arrangement 110 may also control the input and / or output of information to / from the energy supply module 100 and its connected components. This may comprise processing sensor data, displaying operational parameters on an onboard display, and sending alerts or notifications to operators. In some examples, the control arrangement 110 may control the electric drive unit and its components as described below. In some examples, the control arrangement 110 may further monitor and / or control other components of the charger 104 such as the power electronic components such as rectifiers, inverters, transformers, converters and / or power factor correction (PFC).

[0042] In some examples, controlling the energy supply module 100 comprises regulating the electric machine 142, such as an electric motor driven by the energy supply module 100. The control arrangement 110 may manage key parameters like motor speed and torque, ensuring the revolutions per minute (RPM) of the electric motor are optimized for various operational demands. This involves dynamically adjusting the torque output to provide the necessary power for lifting operations or delicate maneuvers, depending on the load and operational conditions. Additionally, the control arrangement 110 may monitor and / or control motor temperature, voltage, and current to prevent overheating and electrical faults. By integrating sensors and feedback loops, the control arrangement 110 may automatically reduce power or activate cooling mechanisms if the motor temperature exceeds safe limits. Voltage and current monitoring help protect the motor from overvoltage and overcurrent conditions, ensuring long-term reliability and efficiency. Furthermore, the control arrangement 110 may facilitate communication between the motor and other components, such as the inverter and energy storage unit, to synchronize operations and maintain optimal performance under varying conditions. In some examples, the control arrangement 110 may monitor and / or control other components, such as current and / or voltage of the electric drive unit components such as the electric motor, the inverter etc.

[0043] In other examples, the control arrangement 110 may control the one or more hydraulic pumps 144 driven by the energy supply module 140, which power the crane boom of the crane 130. This may involve coordinating the hydraulic pump's operation to ensure smooth and precise movements of the crane boom, crucial for safe and efficient lifting tasks. The control arrangement 110 may modulate hydraulic pressure and flow rates based on real-time feedback from sensors monitoring the crane's position and load. By adjusting these parameters, the control arrangement 110 ensures that the hydraulic pump operates within its optimal performance range, providing stable and controlled motion of the crane boom. Additionally, the control arrangement 11 may include features to monitor the pump's 144 health, such as detecting wear or potential failures, and initiating maintenance alerts to prevent downtime. By integrating these control functions, the control arrangement 110 enhances the overall efficiency and safety of the crane's lifting mechanisms, reducing mechanical stress and improving operational precision. This comprehensive control of the hydraulic pump 144 contributes to the energy supply module's ability to support complex crane operations reliably and effectively.

[0044] In some examples, the control arrangement 110 of the energy supply module 100 may further comprise telematic circuitry configured collect data from the crane carrier 120, the crane 130, the electric drive unit 140, a second drive unit 210, and / or the supply module 100 including the parameters controlled by the control arrangement 110. The telematic circuitry may be further configured to process the collected data and / or transmit it to an internal or external entity. In some examples, the telematic circuitry may configured be to determine a coordinate position of the energy supply module. The telematic circuitry may employ GPS for location tracking. In cases where the energy supply module 100 is detachably mountable to the crane carrier 130 and may be used by different users, tracking can be helpful to monitor the module's location, manage logistics, and ensure security by preventing loss or theft.

[0045] The telematic circuitry may be configured to receive and / or determine data of one or more of the following parameters: An operational status of the energy supply module 100, for example indicating whether the module is active, idle, or experiencing any faults; a battery level of the batteries, for example providing real-time information on the remaining charge, which is used for planning operations and preventing downtime; the GPS location of the energy supply module 100, for example allowing for precise tracking and positioning of the module, which is essential for operational logistics and security; a state of health (SOH) and / or state of charge (SOC) of the battery, where SOH, for example, reflects the overall condition and longevity of the battery, and SOC, for example, indicates the current charge level; a current and / or voltage level of the battery, for example ensuring that the electrical system operates within safe limits, preventing potential damage to the components; operating hours of the crane and / or the energy supply module 100, which, for example, help in scheduling maintenance and understanding usage patterns to optimize operational efficiency; inferred statistical data such as patterns in energy consumption, wear and tear over time, and efficiency metrics, which, for example, may be used to predict future maintenance needs and optimize performance; user behavior such as frequency of use, typical operating modes, and response to controls, which can inform training needs and operational improvements; motor parameters such as RPM and power output of the electric motor; hydraulic parameters such as a speed of the hydraulic pumps, a volume per minute, a hydraulic pressure, and / or a movement velocity in the hydraulic pump; and error codes such as a warning and / or error message of the energy supply module, which, for example, alerts operators to issues like low battery levels or system faults, allowing for timely interventions to avoid operational disruptions. In some examples, the received data may be real-time data, from the energy supply module 100.

[0046] In some examples the telematic circuitry may comprise one or more wireless technologies, such as Wi-Fi, Bluetooth, LTE Cat M1, 2G-mobile radio firmware over the air update, GNSS-position-tracking, and / or 5G, which may be used to communicate with other entities. For example, the control arrangement 110 may communicate with the central crane controller. In some examples, the telematic circuitry may communicate with an external device such as cloud server or the like. In some examples, the telematic circuitry may be further configured to transfer the received and / or determined data as described above to the external device, such as the cloud server. For example, a user may access this transmitted and shared data via the external device to be informed about the energy supply module 100. For example, the user may be informed about a low level of the battery (SOC) or the like.

[0047] This setup also facilitates remote diagnostics and updates, improving maintenance schedules and reducing downtime. The ability to communicate with the crane controller ensures that the energy supply module can be seamlessly integrated into the crane's overall control architecture, allowing for coordinated and efficient operation. This integration enhances the module's functionality by enabling synchronized control of the crane's movements and power management, thereby optimizing overall performance and operational efficiency.

[0048] In some examples, the control arrangement 110 may further comprise display circuitry configured to display control parameters of the energy supply module 100. The display circuitry may also be configured to receive input control parameters to control the energy supply module 100 and its connected components as described above. This display circuitry may serve as a human-machine interface (HMI), providing a user interface, such as an LCD or touchscreen display, that offers real-time data on battery status, energy consumption, charging status, operational efficiency, and diagnostic information. The display allows operators to monitor critical metrics at a glance and make informed decisions based on the current status of the energy supply module. Additionally, or instead, it may enable the input of control parameters, allowing operators to adjust settings and control the module directly from the interface. The display circuitry may also include alert systems for warning the operator of potential issues, such as low battery levels, overheating, or maintenance needs. By providing clear and comprehensive views of the module's performance, the display circuitry enhances operational safety and efficiency. This comprehensive view allows operators to quickly identify and address issues, ensuring the energy supply module operates within safe and optimal parameters. By enabling better management of the crane's power systems, the display circuitry contributes to improved operational efficiency and reduced downtime, enhancing the overall performance and reliability of the crane system.

[0049] In some examples, the crane 130 may also be controlled, instead or additionally to the display circuitry, by other input means (HMIs), such as a joystick or similar control devices. These input devices may be installed at several locations on the crane carrier 120, such as the driver's cabin, one or more crane controllers at the side of the crane, and a remote controller for the operator to carry around. These input means allow operators to precisely maneuver the crane boom by translating their movements into electrical signals. These control signals may be processed by the control arrangement 110 and / or the central crane controller. That is the energy supply module 100 and / or the electric drive unit 140 are also controllable through these input means which are processed by the central crane controller enabling seamless integration and coordinated operation of the crane's various components. The central crane controller may be communicating with the energy supply module 100 and / or with the electric drive unit 140 and may control some or all components of these modules. For example, the central crane controller may be a port of the control arrangement 110 or the control arrangement 110 may be a part of the central crane controller. For instance, when an operator moves the joystick to lift or lower the boom, the central crane controller and / or the control arrangement 110 simultaneously manages the power output from the energy supply module and the hydraulic pressure from the pump, ensuring smooth and efficient movements.

[0050] This integrated control approach enhances the operational efficiency, safety, and precision of the crane, allowing for more intuitive and responsive control by the operator.

[0051] In some examples, a night mode operation of parts of the crane or the complete crane may be available. For example, in a city during night operation, the noise level should be reduced to a certain threshold to avoid disturbing the surrounding neighborhood. This night mode ensures that the crane can operate effectively while complying with noise regulations, making it suitable for use in sensitive environments during off-peak hours

[0052] The night mode may control the noise level of the overall system or at least one of the following components to a defined threshold: the crane carrier 120, the crane 130, the electric drive unit 140, a second drive unit 210, and the supply module 100. The noise level of these components may be controlled by the control arrangement 110 and / or the central crane controller. The noise level of these components may be controlled by the control parameters of these components such that the emitted noise of the respective component is reduce or cancelled. For example, an operator may control the noise level of one or more of these components based on an input received via an input means (HMIs) of the control arrangement 110 and / or the central crane controller, such as a display. For example, the night mode may be defined by set of predefined noise levels, which could be specified in decibels or as a series of levels (such as low, medium, and high). If an input noise level is received, the control arrangement 110 and / or the central crane controller may adjust the operational parameters of one or more of the mentioned components to ensure that the noise of the respective component and / or the overall noise generated by the crane remains below the specified input noise level. This adjustment may involve reducing the RPM of the electric drive unit and / or the second drive unit (combustion engine), limiting the power output of the electric motor, adjusting the speed of the hydraulic pumps to lower their operational noise, adjusting the volume per minute, the hydraulic pressure and / or the movement velocity in the hydraulic pump. The controller may also optimize power distribution between the electric drive unit and the second drive unit (combustion engine), for example by turning off the second drive unit to ensure that noise is minimized while maintaining operational efficiency. In some examples, the controller may reduce the resolution or speed of certain operations, such as lowering the crane boom more slowly, to further minimize hydraulic pump noise. The electric drive unit may be operated at a lower power setting to further reduce noise. In some example, the night mode may be defined by reducing or canceling noise within a specific frequency range. For example, noise within the frequency range from 10Hz to 10kHz or the like may be cancelled or reduced to a predefined threshold (for example defined in dB or dBA). This may be effective in reducing annoying or harmful noise frequencies that may disturb nearby residents during nighttime operations. The controller may achieve this by fine-tuning operational parameters which specifically emit noise within this frequency range.

[0053] Fig. 2 illustrates an example of an energy arrangement 200 for supplying energy to the crane 130. The energy arrangement 200 comprises energy supply module 100 as described above. The energy supply module 100 is designed to be detachably connected to the crane carrier 120 via a mechanical interface 108, enabling quick and efficient mounting and dismounting. The energy arrangement 200 further comprises the electric drive unit 140 as described above. For example, the electric drive unit comprises an electrical machine, such as one or more electric motors, driving the crane 130. The one or more electric motors 142 convert electrical energy from the energy supply module 100 into mechanical energy, which is then used to operate the crane 130 and / or other components of the crane carrier 120 as described above.

[0054] In some examples, the electric drive unit further comprises one or more hydraulic pumps 144 which are driven by the electric motor. The one or more hydraulic pumps 142 operate the crane boom, providing the necessary hydraulic pressure and flow to lift, lower, and maneuver heavy loads with precision and control. In some examples, two or more hydraulic pumps 144 are driven by one electric motor 142. In another example, the electric machine comprises two or more electric motors 142 wherein each motor drives one or more hydraulic pumps 142. A hydraulic pump operates by converting mechanical energy from the electric motor into hydraulic energy, which is used to move fluid through the hydraulic system, creating pressure that powers the crane's actuators and lifting mechanisms. The one or more hydraulic pumps may be load-sensing (LS) pumps, which adjust the hydraulic flow and pressure based on the load demand, providing efficient and responsive control. Load-sensing pumps detect the pressure requirements of the hydraulic system and adjust the output, accordingly, reducing energy consumption and heat generation, and ensuring smooth and precise crane operations.

[0055] In some examples, the crane may be operated as a hybrid system. That is, there may be a second drive unit 210 mounted onto the crane carrier 120. In some examples, the second drive unit 210 may comprise a combustion engine 212, one or more power take-off(s) (PTO) 214 and / or one or more hydraulic pumps 216. The second drive unit 210 may be configured to drive at least one of the crane carrier 120, a power take-off 214, and one or more hydraulic pumps 216 which are driving the crane boom of the crane 130. In some examples, the one or more hydraulic pumps 214 may be driven by the combustion engine 212 via the PTO(s) 214. Further, a hydraulic oil tank 218 for the one or more hydraulic pumps of the electric drive unit 140 and / or the second drive unit is installed. The oil tank 218 may be used by the one or more hydraulic pumps of each drive unit.

[0056] That is, beside the electric drive unit 140 the crane carrier 120 and / or the crane boom may be driven by the second - combustion engine driven - drive unit. In some examples, the electric drive unit 140 and the second drive unit 210 may be used together to drive the crane carrier 120 and / or the crane boom. This combined usage allows for enhanced power output and operational flexibility. In other examples, either the electric drive unit 140 or the second drive unit 210 may be used to drive the crane carrier 120 and / or the crane boom. This carne operation allows the system to adapt to different operational needs and conditions, such as utilizing electric power in low-emission zones and switching to the combustion engine for extended range and higher power requirements. The disclosed modular separation of the energy supply module 100 and the electric drive unit 140 offers advantages in hybrid crane system that utilize both a combustion engine and an electric drive unit. When the electric drive unit 140 is required, such as in areas with strict noise and emission regulations, the energy supply module 100 can be quickly mounted to power the electric drive unit 140, ensuring compliance with environmental standards. Conversely, when the electric drive unit 140 is not necessary, the energy supply module 100 may be detached, allowing the crane to operate using the second drive unit 210 (combustion engine) alone. This flexibility maximizes operational efficiency by allowing the crane to operate in the most appropriate mode for the task at hand, reducing unnecessary weight when the electric drive is not needed, and extending the operational range of the crane. The hybrid system also enhances sustainability by reducing emissions and minimizing environmental impact, aligning with modern regulations and societal expectations for greener construction practices. Additionally, the ability to switch between power sources provides operational resilience, ensuring that the crane can continue to operate effectively even if one power source is unavailable or less efficient for a particular task.

[0057] In some examples, the second drive unit 210 may be controlled by the control arrangement 110. In another example, the second drive unit 210 may be controlled by another control unit, such as the central crane controller.

[0058] In some examples, the second drive unit is considered to be part of the energy arrangement 200.

[0059] In some examples, there are one or more hydraulic pumps 144 for driving the crane boom of the crane 130 which are only driven by the second drive unit 210 and further one or more hydraulic pumps for driving the crane boom of the crane 130 which are only driven by the electric drive unit 140. In some other examples, there are one or more hydraulic pumps for driving the crane boom of the crane 130 which can be driven by second drive unit 200 and by the electric drive unit 140. This will be described in more detail with regards to Figs. 4 to 6.

[0060] In some examples, the crane 130 is mounted to the crane carrier 120 and the energy supply module is arranged on a first side of the crane and electric drive unit is arranged on a second side of the crane 130. In some examples, the crane carrier may be a vehicle 120, such as a truck. The vehicle 120 comprises the energy arrangement 200. The energy supply module 100, may be mounted on the platform or bed of the vehicle 120. This placement allows for easy access for maintenance and operations and makes use of the truck's flat surface for stable positioning. In some examples, the energy supply module 100 may be attached to the side of the chassis of truck. This side mounting is advantageous when the platform space is limited or needed for other equipment. The electric drive unit 140 may be similarly mounted on the opposite side of the crane 130. It may be placed either on the truck's platform or attached to the side of the chassis, opposite to where the energy supply module 100 is mounted. By placing these units on opposite sides, the overall weight distribution is optimized, which enhances the crane's operational efficiency and balance.

[0061] In some examples, the energy supply module 100 is detachably mounted to the crane carrier 130 via the mechanical interface 108, and the electric drive unit 140 is permanently fixed to the crane carrier.

[0062] Fig. 3 illustrates an example of a block diagram 300 of the energy arrangement 300. The energy arrangement 300 comprises the electric drive unit 310 and the energy supply module 320. The energy supply module 310 comprises an energy storage (also referred to as battery) 311, a charger 312 with a type 2 cable, a converter 323 (such as an 24V DC / DC converter), a parameter control circuitry with a display circuitry 324, a power distribution unit 325 and wiring harness 326. Furthermore, the energy supply module 310 comprises a telematic circuitry 327 (also referred to as telematic module). In some examples, the telematic circuitry may wake up periodically (e.g. every four hour or the like), and transmit obtained parameter data, such as the battery level information (SoC, Soh), to an internal or external device. In some examples, the parameter control circuitry with a display circuitry 324, and the telematic circuitry 327 may be part of a control arrangement. The energy storage 321 may be charged by the charger 322 via a type 2 charging connection (which may be the standard in Europe). The electric drive unit 310 comprises an electric motor 311, a motor controller 312, a transmission unit 313 and a hydraulic pump 314. In some examples, the electric motor 311 the motor controller 312 and the transmission unit 313 are part of an electric machine. The truck 330 comprises a crane that is mounted on the truck (not shown in Fig. 3), a drivers cabin 331, a central controller 332, a hydraulic pump 333 and an oil tank 334 for the hydraulic pump 333 which may also provide hydraulic oil to the pump 314. Further, either the truck 330 and / or the energy arrangement 300 comprise one or more human machine interface(s) 340, such as a Joystick, or a touch display or the like.

[0063] The electric drive unit 310 and energy supply module 320 are separate from each other and may be connected via the electric interface (now shown in Fig. 3) and a cable. The electric drive unit is permanently installed on a chassis of a truck carrier 330. Therefore, the energy supply module 320 is interchangeable between several different carrier vehicles and can be transported on a truck bed or a chassis of the carrier vehicle. The electric drive unit 310 is connected to central crane controller 332 as well as to the energy supply module 320 configured to be mounted on the truck bed. The energy supply module 320 has also a connection to the drivers cabin 331 so that the driver is able to activate the energy arrangement 300 from the driver's seat. Further, after the energy arrangement 300 is started, a parameter control circuitry 324 is collecting parameters like rpm, torque, oil flow etc. and sends these collected parameters to the human machine interface 340. Furthermore, the crane is operated over the human machine interface 328. The human machine interface 328 also can the collected parameters of the energy arrangement 300 and / or the truck 330, as well as warnings and errors. Furthermore, the telematic circuitry 327 of the energy supply module 320 is configured to localize the current position of the energy supply module 320. The telematic circuitry 327 has access to 5G network and can send information to the central crane controller 332.

[0064] Fig. 4 illustrates an example of an energy arrangement 400 for supplying energy to the crane 130. The electric drive unit 140 further comprises a clutch interface 410, which facilitates the coupling of the hydraulic pump 144 to a PTO 214 driven by a combustion engine 212. Additionally, a driveshaft 420 connects the PTO 214 and the clutch interface 410. This driveshaft allows the PTO to transfer mechanical power from the combustion engine to the hydraulic pump. The electric motor 142 and the hydraulic pump 144 may be connected by a gearbox 412. This setup allows the hydraulic pump 144 to be driven by either the electric motor 142 or the combustion engine 212, depending on the operational requirements. The clutch interface 410 enables seamless switching between the two power sources, ensuring that the hydraulic system remains continuously operational.

[0065] Therefore, there is no need to install separate hydraulic pumps for the electric drive unit 140 and the second drive unit 210. This design simplifies the hydraulic system, reduces maintenance needs, and optimizes the overall efficiency of the energy arrangement 400. In a hybrid operation, this setup allows the system to switch between electric and combustion power sources seamlessly, ensuring that the crane can operate effectively in various environments and conditions. This flexibility maximizes operational efficiency, reduces unnecessary weight, and extends the operational range of the crane, providing a versatile solution for various construction site requirements.

[0066] Fig. 5 illustrates an example of an energy arrangement 500 for supplying energy to the crane 130. The electric drive unit 140 further comprises a gearbox 510 configured to couple the hydraulic pump 144 to a PTO 214 driven by a combustion engine. Additionally, a driveshaft 420 connects the PTO 214 and a clutch interface 512. This driveshaft allows the PTO to transfer mechanical power from the combustion engine to a gearbox 510. The gearbox 510 then distributes the power to both the hydraulic pump 144 and the electric motor 142. This setup allows the hydraulic pump 144 to be driven by either the electric motor 142 or the combustion engine 212, depending on the operational requirements. The gearbox 510 enables seamless switching between the two power sources, ensuring that the hydraulic system remains continuously operational.

[0067] Therefore, there is no need to install separate hydraulic pumps for the electric drive unit 140 and the second drive unit 210. This design simplifies the hydraulic system, reduces maintenance needs, and optimizes the overall efficiency of the energy arrangement 500. In a hybrid operation, this setup allows the system to switch between electric and combustion power sources seamlessly, ensuring that the crane can operate effectively in various environments and conditions. This flexibility maximizes operational efficiency, reduces unnecessary weight, and extends the operational range of the crane, providing a versatile solution for various construction site requirements.

[0068] Fig. 6 illustrates an example of an energy arrangement 600 for supplying energy to the crane 130. The electric drive unit 140 comprises a hydraulic motor 610, configured to be coupled to the hydraulic pump 144 via a gearbox 612. The second drive unit 210 includes the combustion engine 212 that drives a separate hydraulic pump 216. The hydraulic pump 216, in turn, powers the hydraulic motor 610. This setup allows the hydraulic pump 144 to be driven by either the electric motor 142 or the hydraulic motor 610, depending on the operational requirements. The clutch interface 410 enables seamless switching between the two power sources, ensuring that the hydraulic system remains continuously operational. An hydraulic oil tank 620 may be used to provided hydraulic oil to the hydraulic pump 216 and the hydraulic pump 144.

[0069] An advantage of this design is the elimination of the need for a driveshaft, which can be difficult to install below the truck due to space constraints. By using a hydraulic motor 610 driven by the hydraulic pump 216 from the combustion engine 212, the system becomes more flexible and easier to install. This design simplifies the hydraulic system, reduces maintenance needs, and optimizes the overall efficiency of the energy arrangement 600. In a hybrid operation, this setup allows the system to switch between electric and combustion power sources seamlessly, ensuring that the crane can operate effectively in various environments and conditions. This flexibility maximizes operational efficiency, reduces unnecessary weight, and extends the operational range of the crane, providing a versatile solution for various construction site requirements.

[0070] Fig. 7 illustrates an example of an energy supply module 700. The energy supply module 700 comprises the energy storage 102, the charger 104, the control arrangement 110, and the electric drive unit 140. All these components are housed within the same external housing 114. The electrical interface 106 serves as an internal interface that connects the components within the energy supply module 700. This means that the system is detachably mounted as a single module to the crane carrier 120. This integrated design offers several advantages, particularly in hybrid crane operations. The ability to mount and dismount the entire energy supply module as a single unit reduces downtime and simplifies maintenance. The lower weight of the consolidated module compared to separate components also improves the overall efficiency and maneuverability of the crane.

[0071] Figs. 8A and 8B illustrate an example of the energy supply module 800 from a front view and a rear view. The energy supply module 800 comprises a mechanical interface 808 designed for easy mounting and dismounting. The module is configured to fit within the dimensions of a standard Euro pallet, ensuring compatibility with common transportation and handling equipment.

[0072] In the following, some examples of the proposed concept are presented: An example (e.g., example 1) relates to an energy supply module for supplying electrical energy to a crane, the crane arranged to be mounted on a crane carrier, the energy supply module comprising an energy storage, a charger to charge the energy storage, a mechanical interface to mount the energy supply module to the crane carrier, and an electrical interface to connect the energy supply module with an electric drive unit driving the crane.

[0073] Another example (e.g., example 2) relates to a previous example (e.g., example 1) or to any other example, further comprising an external housing, wherein the energy storage and the charger are arranged in the external housing, wherein the external housing is connected to the mechanical interface and the electrical interface.

[0074] Another example (e.g., example 3) relates to a previous example (e.g., one of the examples 1 to 2) or to any other example, further comprising that the energy supply module and at least part of the electric drive unit are physically separated from each other by at least one of the crane carrier and an external housing of the energy supply module.

[0075] Another example (e.g., example 4) relates to a previous example (e.g., one of the examples 1 to 3) or to any other example, further comprising that at least part of the electric drive unit is arranged in the energy supply module.

[0076] Another example (e.g., example 5) relates to a previous example (e.g., one of the examples 1 to 4) or to any other example, further comprising that the energy supply module is configured to be detachably connected to the crane carrier via the mechanical interface and is further configured to be detachably connected to the electric drive unit via the electrical interface.

[0077] Another example (e.g., example 6) relates to a previous example (e.g., one of the examples 1 to 5) or to any other example, further comprising that the mechanical interface comprises one or more recesses for handling by a forklift equipment.

[0078] Another example (e.g., example 7) relates to a previous example (e.g., one of the examples 1 to 6) or to any other example, further comprising that the mechanical interface comprises one or more brackets configured to couple into corresponding one or more brackets of the crane carrier to mount the energy supply module to the crane carrier.

[0079] Another example (e.g., example 8) relates to a previous example (e.g., one of the examples 1 to 7) or to any other example, further comprising that the mechanical interface comprises one or more rails configured to fit into one or more corresponding guide rails on the crane carrier to mount the energy supply module to the crane carrier.

[0080] Another example (e.g., example 9) relates to a previous example (e.g., one of the examples 1 to 7) or to any other example, further comprising that the mechanical interface comprises one or more magnets configured to be attached to one or more corresponding metallic surfaces on the crane carrier to mount the energy supply module to the crane carrier.

[0081] Another example (e.g., example 10) relates to a previous example (e.g., one of the examples 1 to 7) or to any other example, further comprising that the mechanical interface comprises a locking element or a receiver element of a quick release mechanism with a corresponding receiver element or locking element on the crane carrier to mount the energy supply module to the crane carrier.

[0082] Another example (e.g., example 11) relates to a previous example (e.g., one of the examples 1 to 10) or to any other example, further comprising a control arrangement, the control arrangement comprises a parameter control circuitry being configured to control the energy supply module.

[0083] Another example (e.g., example 12) relates to a previous example (e.g., example 11) or to any other example, further comprising that controlling the energy supply module comprises controlling at least one of an electric machine driven by the energy supply module, the energy storage, the charger, and a hydraulic pump of the energy supply module driving a crane boom of the crane.

[0084] Another example (e.g., example 13) relates to the control arrangement further comprising a telematic circuitry being configured to at least determine a coordinate position of the energy supply module, to communicate with a crane controller.

[0085] Another example (e.g., example 14) relates to the control arrangement further comprising a display circuitry being configured to display control parameters of the energy supply module.

[0086] Another example (e.g., example 15) relates to a previous example (e.g., one of the examples 1 to 14) or to any other example, further comprising a voltage converter configured to adjust the voltage of the energy supply between the energy storage and the electric drive unit.

[0087] Another example (e.g., example 16) relates to a previous example (e.g., one of the examples 1 to 15) or to any other example, further comprising that the electrical interface comprises at least one of: a first power transmission interface for transmitting power from the energy storage to an electric machine, a second power transmission interface for transmitting power from the energy storage to the crane carrier, and a signal transmission interface for transmitting a control signal.

[0088] Another example (e.g., example 17) relates to a previous example (e.g., one of the examples 1 to 16) or to any other example, further comprising that the electrical interface connects the energy supply module with an electric machine of the electric drive unit, wherein the electric machine is driving a hydraulic pump driving a crane boom of the crane.

[0089] Another example (e.g., example 18) relates to a previous example (e.g., one of the examples 1 to 17) or to any other example, further comprising that the crane is a loader crane.

[0090] Another example (e.g., example 19) relates to a previous example (e.g., one of the examples 1 to 18) or to any other example, further comprising that the crane carrier is a truck.

[0091] An example (e.g., example 20) relates to an energy arrangement for supplying energy to a crane, the energy arrangement comprising the energy supply module according to any one of examples 1 to 19, and the electric drive unit comprising an electrical machine driving the crane.

[0092] Another example (e.g., example 21) relates to a previous example (e.g., example 20) or to any other example, further comprising that the electric drive unit further comprises a hydraulic pump to drive a crane boom of the crane, wherein the electric machine is driving the hydraulic pump.

[0093] Another example (e.g., example 22) relates to a previous example (e.g., one of the examples 20 to 21) or to any other example, further comprising that a second drive unit is mounted on to the crane carrier, the second driving unit being configured to drive at least one of the crane carrier, a power take-off, and a hydraulic pump driving a crane boom of the crane.

[0094] Another example (e.g., example 23) relates to a previous example (e.g., example 22) or to any other example, further comprising the second drive unit.

[0095] Another example (e.g., example 24) relates to a previous example (e.g., one of the examples 21 to 23) or to any other example, further comprising that the electric drive unit further comprises a clutch interface configured to couple the hydraulic pump to a combustion engine.

[0096] Another example (e.g., example 25) relates to a previous example (e.g., one of the examples 21 to 23) or to any other example, further comprising that the electric drive unit further comprises a gearbox configured to couple the hydraulic pump to a combustion engine.

[0097] Another example (e.g., example 26) relates to a previous example (e.g., one of the examples 21 to 25) or to any other example, further comprising that the electric drive unit further comprises a hydraulic motor configured to couple the hydraulic pump to a combustion engine.

[0098] Another example (e.g., example 27) relates to a previous example (e.g., one of the examples 20 to 26) or to any other example, further comprising that the crane is mounted to the crane carrier and the energy supply module is arranged on a first side of the crane and electric drive unit is arranged on a second side of the crane.

[0099] Another example (e.g., example 28) relates to a previous example (e.g., one of the examples 20 to 27) or to any other example, further comprising that the energy supply module is detachably mounted to the crane carrier via the mechanical interface, and the electric drive unit is permanently fixed to the crane carrier.

[0100] An example (e.g., example 29) relates to a vehicle, comprising the energy arrangement according to anyone of examples 20 to 28 being mounted on the vehicle.

[0101] The aspects and features described in relation to a particular one of the previous examples may also be combined with one or more of the further examples to replace an identical or similar feature of that further example or to additionally introduce the features into the further example.

[0102] It is further understood that the disclosure of several steps, processes, operations or functions disclosed in the description or claims shall not be construed to imply that these operations are necessarily dependent on the order described, unless explicitly stated in the individual case or necessary for technical reasons. Therefore, the previous description does not limit the execution of several steps or functions to a certain order. Furthermore, in further examples, a single step, function, process or operation may include and / or be broken up into several sub-steps, -functions, -processes or -operations.

[0103] If some aspects have been described in relation to a device or system, these aspects should also be understood as a description of the corresponding method. For example, a block, device or functional aspect of the device or system may correspond to a feature, such as a method step, of the corresponding method. Accordingly, aspects described in relation to a method shall also be understood as a description of a corresponding block, a corresponding element, a property or a functional feature of a corresponding device or a corresponding system.

[0104] The following claims are hereby incorporated in the detailed description, wherein each claim may stand on its own as a separate example. It should also be noted that although in the claims a dependent claim refers to a particular combination with one or more other claims, other examples may also include a combination of the dependent claim with the subject matter of any other dependent or independent claim. Such combinations are hereby explicitly proposed, unless it is stated in the individual case that a particular combination is not intended. Furthermore, features of a claim should also be included for any other independent claim, even if that claim is not directly defined as dependent on that other independent claim.

Claims

1. An energy supply module for supplying electrical energy to a crane, the crane arranged to be mounted on a crane carrier, the energy supply module comprising: an energy storage; a charger to charge the energy storage; a mechanical interface to mount the energy supply module to the crane carrier; and an electrical interface to connect the energy supply module with an electric drive unit driving the crane.

2. The energy supply module according to claim 1, further comprising an external housing, wherein the energy storage and the charger are arranged in the external housing, wherein the external housing is connected to the mechanical interface and the electrical interface.

3. The energy supply module according to any one of claims 1 to 2, wherein the energy supply module and at least part of the electric drive unit are physically separated from each other by at least one of the crane carrier and an external housing of the energy supply module.

4. The energy supply module according to any one of claims 1 to 3, wherein at least part of the electric drive unit is arranged in the energy supply module.

5. The energy supply module according to any one of claims 1 to 4, wherein the energy supply module is configured to be detachably connected to the crane carrier via the mechanical interface and is further configured to be detachably connected to the electric drive unit via the electrical interface.

6. The energy supply module according to any one of claims 1 to 5, wherein the mechanical interface comprises one or more recesses for handling by a forklift equipment.

7. The energy supply module according to any one of claims 1 to 6, further comprising a control arrangement, the control arrangement comprises a parameter control circuitry being configured to control the energy supply module.

8. The energy supply module according to claim 7, wherein controlling the energy supply module comprises controlling at least one of: an electric machine driven by the energy supply module, the energy storage, the charger, and a hydraulic pump of the energy supply module driving a crane boom of the crane.

9. The energy supply module according to any one of claims 1 to 8, the control arrangement further comprising a telematic circuitry being configured to at least determine a coordinate position of the energy supply module, to communicate with a crane controller.

10. The energy supply module according to any one of claims 1 to 9, wherein the electrical interface comprises at least one of: a first power transmission interface for transmitting power from the energy storage to an electric machine, a second power transmission interface for transmitting power from the energy storage to the crane carrier, and a signal transmission interface for transmitting a control signal.

11. The energy supply module according to any one of claims 1 to 10, wherein the crane is a loader crane.

12. An energy arrangement for supplying energy to a crane, the energy arrangement comprising: the energy supply module according to any one of claims 1 to 11; and the electric drive unit comprising an electrical machine driving the crane.

13. The energy arrangement according to claim 12, wherein a second drive unit is mounted on to the crane carrier, the second driving unit being configured to drive at least one of the crane carrier, a power take-off, and a hydraulic pump driving a crane boom of the crane.

14. The energy arrangement according to claim 13, further comprising the second drive unit.

15. A vehicle, comprising: the energy arrangement according to any one of claims 12 to 14 being mounted on the vehicle.

Images