WO2024256053A1 - Machine de construction à système d'alimentation électrique embarqué à tension continue - Google Patents

Machine de construction à système d'alimentation électrique embarqué à tension continue Download PDF

Info

Publication number
WO2024256053A1
WO2024256053A1 PCT/EP2024/059340 EP2024059340W WO2024256053A1 WO 2024256053 A1 WO2024256053 A1 WO 2024256053A1 EP 2024059340 W EP2024059340 W EP 2024059340W WO 2024256053 A1 WO2024256053 A1 WO 2024256053A1
Authority
WO
WIPO (PCT)
Prior art keywords
undercarriage
circuit
electrical
construction machine
direct current
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/EP2024/059340
Other languages
German (de)
English (en)
Inventor
Paul Schall
Erich Spindler
Fabian Weber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Liebherr Werk Nenzing GmbH
Original Assignee
Liebherr Werk Nenzing GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Liebherr Werk Nenzing GmbH filed Critical Liebherr Werk Nenzing GmbH
Priority to EP24718139.9A priority Critical patent/EP4683816A1/fr
Publication of WO2024256053A1 publication Critical patent/WO2024256053A1/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B60L1/003—Supplying electric power to auxiliary equipment of vehicles to auxiliary motors, e.g. for pumps, compressors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/12—Arrangements of means for transmitting pneumatic, hydraulic, or electric power to movable parts of devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2200/00—Type of vehicles
    • B60L2200/40—Working vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/61—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/61—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
    • B60L50/62—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles charged by low-power generators primarily intended to support the batteries, e.g. range extenders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/70—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by fuel cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/70—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by fuel cells
    • B60L50/71—Arrangement of fuel cells within vehicles specially adapted for electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/75—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using propulsion power supplied by both fuel cells and batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L7/00—Electrodynamic brake systems for vehicles in general
    • B60L7/10—Dynamic electric regenerative braking
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/0858—Arrangement of component parts installed on superstructures not otherwise provided for, e.g. electric components, fenders, air-conditioning units
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/2058—Electric or electro-mechanical or mechanical control devices of vehicle sub-units
    • E02F9/2062—Control of propulsion units
    • E02F9/207—Control of propulsion units of the type electric propulsion units, e.g. electric motors or generators

Definitions

  • the present invention relates to a construction machine according to the preamble of claim 1.
  • the typical structure of a known battery-electric or hybrid construction machine 1 is shown schematically in Figure 1.
  • the construction machine 1 has an electrical energy source in the form of an electrical energy storage device 40, which is connected to any number of electrical consumers 30 via a DC voltage on-board network 20.
  • the construction machine 1 can have several electrical drive trains, each with at least one electric motor 32, as electrical consumers 30, which drive, for example, a pump distributor gear to supply hydraulic actuators and/or motors.
  • a further electrical consumer 30 can be a low-voltage on-board network 34, if present.
  • the construction machine 1 can have further power electronics, for example a DC/DC converter 38, which converts the DC intermediate circuit voltage into a low-voltage voltage (e.g. 24V) for the low-voltage on-board network 34, or inverters which convert the DC intermediate circuit voltage into an AC voltage for operating one or more electric motors 32.
  • a DC/DC converter 38 which converts the DC intermediate circuit voltage into a low-voltage voltage (e.g. 24V)
  • the construction machine 1 can have a charging interface for connecting an external energy source.
  • Figure 1 shows an example of an alternating current or AC charging interface 52 for connecting an external three-phase electrical network 60, wherein the alternating voltage is converted into a suitable direct voltage for the DC intermediate circuit 20 via an AC/DC converter 54 (for example a charger or on-board charger (OBC)).
  • AC/DC converter 54 for example a charger or on-board charger (OBC)
  • the electrical on-board network is typically limited to an electric drive train, the main electric drive. This drives one or more hydraulic pumps via a transfer case. If, as shown in Figure 1, the respective load is driven directly by an electric machine, the DC voltage on-board network 20 extends over the entire construction machine 1.
  • the construction machine 1 can have a primary energy source 42 in parallel with the energy storage device 40 (hybrid drive).
  • the primary energy source 42 can comprise an internal combustion engine 43 (e.g. a diesel engine) that drives an electric generator 44, the output alternating voltage of which is converted by an AC/DC converter 45 into a suitable direct voltage for the DC intermediate circuit 20.
  • the DC voltage on-board network 20 connects the various electrical energy sources to the various electrical consumers and thus forms a DC intermediate circuit 20.
  • the DC intermediate circuit 20 forms a high-voltage on-board network, which is designed for direct voltages of 60V to 1500V, for example.
  • a number of construction machines have an undercarriage and a rotating upper carriage mounted on the undercarriage.
  • the undercarriage can be stationary or be mobile. Examples of the latter case include crawler cranes, mobile cranes, hydraulic excavators, cable excavators, truck-mounted concrete pumps (here the upper carriage typically includes a concrete distribution boom) or civil engineering machines such as rotary drilling rigs, diaphragm wall cutters or grabs or vibrating rams.
  • construction machines with crawler undercarriages usually have hydraulic travel drives.
  • a diesel engine is typically provided in the upper carriage, which drives a pump distributor gear that supplies the hydraulic travel drives in the undercarriage.
  • the present invention is based on the object of enabling further electrification of construction machines with a rotating superstructure.
  • a construction machine which comprises an undercarriage, an upper carriage rotatably mounted on the undercarriage and an on-board electrical system.
  • the on-board electrical system can be understood in particular to mean all of the electrical components of the construction machine.
  • the on-board electrical system comprises a direct voltage circuit, at least one electrical consumer and at least one electrical energy source and/or at least one electrical interface for connecting an external energy source.
  • the at least one electrical consumer is connected to the at least one electrical energy source and/or the at least one electrical interface via the direct voltage circuit.
  • the on-board electrical system can also comprise, for example, a low-voltage on-board electrical system, at least one sensor for detecting a parameter of the construction machine or a work process parameter, at least one control device for controlling one or more components, at least one display element and/or at least one input unit.
  • the direct current circuit extends to both the upper carriage and the undercarriage and comprises an upper carriage circuit arranged in the upper carriage and an undercarriage circuit arranged in the undercarriage.
  • the direct current circuit comprises a direct current transmission which extends between the upper carriage and the undercarriage and connects the upper carriage circuit to the undercarriage circuit, ie connects them electrically.
  • the solution according to the invention therefore extends the DC on-board network, which is usually located in the upper carriage, to the undercarriage, with direct current being transmitted between the upper carriage and the undercarriage via the direct current transmission.
  • This makes it possible, for example, to provide a purely electric drive in the undercarriage, which is supplied by one or more energy sources from the upper carriage.
  • additional components such as combustion engines and generators in the undercarriage can be dispensed with.
  • the extension of the DC circuit to the undercarriage and upper carriage enables the construction machine to be electrified with a smaller number of electronic components and greater flexibility in the arrangement of components and interfaces.
  • the required cable lengths can be reduced and unnecessary interfaces can be avoided.
  • the DC circuit extending to the entire construction machine, it is now possible to provide a DC charging interface on the undercarriage in order to charge an energy storage unit in the upper carriage.
  • the energy fed in can be made available to energy storage units and/or consumers throughout the entire construction machine via the DC transmission.
  • the superstructure comprises at least one electrical energy source, wherein the electrical energy source is an electrical energy storage device.
  • the electrical energy source is an electrical energy storage device.
  • This can be a single storage device or a combination of several energy storage devices.
  • One or more electrical consumers of the construction machine can be supplied with energy via the electrical energy storage device.
  • the at least one electrical energy storage device is preferably a battery-supported energy storage device.
  • the superstructure comprises at least one electrical energy source, wherein the electrical energy source is a primary energy source.
  • the primary energy source generates electrical energy itself and can, for example, comprise an internal combustion engine (e.g. a diesel engine or a gasoline engine). This can be connected to an electrical generator for generating electricity, the latter being coupled in particular to the direct voltage circuit via an AC/DC converter in order to provide the required direct voltage.
  • the primary energy source can comprise a fuel cell, which can optionally be coupled to the direct voltage circuit via a DC/DC converter.
  • Other primary energy sources are also conceivable, such as a solar system or a wind turbine.
  • the superstructure can have several different primary energy sources, for example an internal combustion engine and a fuel cell.
  • the superstructure can comprise several electrical energy sources, for example one or more electrical energy storage units and one or more of the aforementioned primary energy sources, in any combination and number.
  • the superstructure comprises at least one electrical consumer, which is also supplied by a or on the superstructure can be supplied with energy via the superstructure circuit.
  • the undercarriage can comprise at least one electrical consumer which can be supplied with energy from an electrical energy source arranged in or on the superstructure via the superstructure circuit, the direct current transmission and the undercarriage circuit.
  • the direct current transmission between the upper and lower carriages means that any electrical consumers in the upper carriage and/or the lower carriage can be supplied by electrical energy sources in the upper carriage, for example an electrical drive train for a working function of the upper carriage and/or an electrical travel drive in the lower carriage.
  • electrical energy sources in the upper carriage for example an electrical drive train for a working function of the upper carriage and/or an electrical travel drive in the lower carriage.
  • energy can be transferred between electrical energy storage units in the upper carriage and electrical energy storage units in the lower carriage, for example to charge an empty energy storage unit via another, fuller energy storage unit.
  • the undercarriage comprises at least one electrical energy source, wherein the electrical energy source is an electrical energy storage device.
  • the undercarriage comprises at least one electrical energy source, wherein the electrical energy source is a primary energy source.
  • the electrical energy source is a primary energy source.
  • the undercarriage does not have its own primary energy source or generally does not have its own electrical energy source.
  • All electrical consumers of the undercarriage (in particular one or more electric traction motors) are supplied via direct current transmission by one or more electrical energy sources of the superstructure.
  • the undercarriage comprises at least one electrical consumer, which can be supplied with energy from an electrical energy source also arranged in or on the undercarriage via the undercarriage.
  • the uppercarriage can comprise at least one electrical consumer, which can be supplied with energy from an electrical energy source arranged in or on the undercarriage via the undercarriage circuit, the direct current transmission and the uppercarriage circuit.
  • any electrical consumers in the uppercarriage and/or in the undercarriage can be supplied by electrical energy sources in the undercarriage, for example an electrical drive train for a working function of the uppercarriage and/or an electrical travel drive in the undercarriage.
  • electrical energy sources in the undercarriage for example an electrical drive train for a working function of the uppercarriage and/or an electrical travel drive in the undercarriage.
  • energy can be transferred between electrical energy storage units in the uppercarriage and electrical energy storage units in the undercarriage.
  • the undercarriage comprises an electric drive with at least one electric drive motor, which can be supplied with energy via the uppercarriage circuit, the direct current transmission and the undercarriage circuit from an electrical energy source arranged in the uppercarriage.
  • the electric drive can also be supplied via the undercarriage circuit by an electrical energy source of the undercarriage.
  • the supply from energy sources of the uppercarriage and the undercarriage can take place in parallel.
  • a control unit can be present which, depending on the operating state and/or user input, supplies the electric drive either from the uppercarriage and/or the undercarriage.
  • the undercarriage has at least one electrical consumer in the form of an electric drive motor wherein the electric drive motor preferably drives a wheel axle or a crawler carrier of the undercarriage.
  • each crawler carrier can be driven by at least one of its own electric drive motors.
  • the at least one electric traction motor is set up to generate energy in a recuperation mode (e.g. when the construction machine is braking), which energy can be fed into the direct current circuit.
  • the at least one electric traction motor can be set up to supply at least one electrical consumer arranged in the undercarriage and/or at least one electrical energy storage device arranged in the undercarriage with energy via the undercarriage circuit in recuperation mode.
  • the at least one electric traction motor can be set up to supply at least one electrical consumer arranged in the uppercarriage and/or at least one electrical energy storage device arranged in the uppercarriage with energy via the undercarriage circuit, direct current transmission and uppercarriage circuit in recuperation mode.
  • the construction machine can preferably comprise a control unit which is designed to control the energy flows between the upper and lower carriages accordingly, for example to supply energy from an energy storage device and/or an energy source to a specific electrical consumer and/or to provide energy generated via an electric drive to an electrical energy storage device and/or an electrical energy source in the aforementioned recuperation mode.
  • a control unit which is designed to control the energy flows between the upper and lower carriages accordingly, for example to supply energy from an energy storage device and/or an energy source to a specific electrical consumer and/or to provide energy generated via an electric drive to an electrical energy storage device and/or an electrical energy source in the aforementioned recuperation mode.
  • the superstructure comprises at least one electrical consumer in the form of a low-voltage on-board network.
  • a low-voltage on-board network can be, for example, a 12V on-board network or a 24V on-board network, although of course an on-board network with any other voltage can also be provided.
  • the construction machine comprises several low-voltage on-board networks with different voltages, for example a 12V on-board network and a 24V on-board network.
  • the upper carriage can comprise at least one electrical consumer in the form of an electric motor, which serves, for example, to drive a hydraulic pump or a pump distribution gear (e.g. for supplying luffing and telescoping cylinders on a mobile crane, one or more cable winches, one or more hydraulic cylinders on a hydraulic excavator, etc.), an actuator or a cooling device of the construction machine.
  • the upper carriage can comprise several such electrical consumers or electrical drive trains, in any number and combination of the functions mentioned.
  • the undercarriage includes an electrical interface for connecting an external energy source.
  • the external energy source can be, for example, an external power grid (e.g. a three-phase network), a generator or an external energy storage device.
  • an external power grid e.g. a three-phase network
  • generator e.g. a generator
  • external energy storage device e.g. any type of external energy supply that can provide energy in the form of AC or DC is possible.
  • At least one electrical consumer or energy storage device arranged in the upper carriage can be supplied with energy via the electrical interface, the undercarriage circuit, the direct current transmission and the upper carriage circuit.
  • at least one electrical consumer or energy storage device arranged in the undercarriage can be supplied with energy via the electrical interface and the undercarriage circuit.
  • one or more electrical energy storage devices of the construction machine can be charged via the electrical interface. Direct operation or direct supply of electrical consumers of the construction machine is also possible.
  • the electrical interface is a direct current charging interface or DC charging interface.
  • the charging cable can now be advantageously arranged on the undercarriage, for example on a crawler carrier of the undercarriage.
  • the movements of the undercarriage are generally smaller than those on the uppercarriage (e.g. when the uppercarriage rotates), so that the connection of the external energy supply is easier.
  • a charging interface arranged on the uppercarriage a plugged-in charging cable would move with a rotation of the uppercarriage or drag on the ground and thus possibly be damaged.
  • Energy fed in via the DC charging interface can be made available to the direct voltage circuit, which also has the advantage over AC charging interfaces that no machine-side charging devices such as on-board chargers (OBC) are required.
  • OBC on-board chargers
  • the uppercarriage can also have another electrical charging interface (a DC charging interface or an AC charging interface).
  • a DC charging interface or an AC charging interface
  • the undercarriage comprises several electrical charging interfaces, for example a DC charging interface and an AC charging interface.
  • only the uppercarriage can have one or more electrical charging interfaces.
  • an AC charging interface this is preferably connected to the direct current circuit (i.e., depending on the arrangement on the uppercarriage or undercarriage, to the uppercarriage or undercarriage circuit) via an AC/DC converter, in particular via an OBC.
  • the direct current transmission comprises a slip ring connection with a first slip ring contact connected to the undercarriage circuit and a second slip ring contact connected to the uppercarriage circuit.
  • the DC slip ring connection preferably comprises a first slip ring body connected to the undercarriage circuit and a second slip ring body connected to the uppercarriage circuit.
  • the slip ring connection ensures the direct current or DC transmission between the uppercarriage and the undercarriage in any rotational position of the uppercarriage relative to the undercarriage. The DC transmission therefore remains intact even when the uppercarriage rotates and in any angular position.
  • the DC slip ring connection is preferably arranged on or in a rotary joint between the upper carriage and the undercarriage of the construction machine.
  • the rotary joint preferably comprises a rotary mechanism with at least one hydraulic or electric rotary drive.
  • the latter preferably represents an electrical consumer (or, in the case of a hydraulic rotary drive, the electric motor that drives the associated hydraulic pump or the associated pump distribution gear) that is supplied via the DC circuit.
  • the direct current transmission is set up for bidirectional direct current transmission between the undercarriage circuit and the uppercarriage circuit.
  • the direct current transmission can therefore transmit direct current from the uppercarriage to the undercarriage and vice versa from the undercarriage to the uppercarriage.
  • electrical energy sources and electrical energy sinks or consumers can be arranged flexibly on the construction machine and distributed as desired between the undercarriage and uppercarriage.
  • the DC voltage circuit is a high-voltage circuit. This can mean in particular that the DC voltage in the DC voltage circuit can be between 60V and 1500V, although higher voltages are also conceivable in principle. Alternatively, the DC voltage circuit can be designed for DC voltages of less than 60V, for example in smaller construction machines.
  • the DC voltage circuit can comprise at least one power electronics component, for example one or more frequency converters or AC/AC converters, inverters or DC-AC converters, rectifiers or AC/DC converters, switching regulators, DC/DC converters and/or power converters or switching power supplies.
  • power electronics component for example one or more frequency converters or AC/AC converters, inverters or DC-AC converters, rectifiers or AC/DC converters, switching regulators, DC/DC converters and/or power converters or switching power supplies.
  • the direct current circuit forms in particular a DC intermediate circuit.
  • Figure 1 a schematic representation of the electrical system of a construction machine known from the prior art.
  • Figure 2 a schematic representation of the electrical system of the construction machine according to the invention according to an embodiment.
  • Figure 1 shows a schematic representation of the electrical system of an example of a known construction machine 1 and has already been described at the beginning.
  • the electrical consumers 30 are all supplied with energy from the existing electrical energy sources via a DC voltage circuit 20, whereby in this example there is a primary energy source 42, an electrical energy storage device 40 and an external energy source 60, which is connected to the DC voltage circuit 20 via an electrical AC interface 52 and an AC/DC converter 54.
  • FIG. 2 shows schematically the electrical system of a preferred embodiment of the construction machine 10 according to the invention.
  • the construction machine 10 comprises an undercarriage 12 with an electric drive and an upper carriage 14 rotatably mounted on the undercarriage 12.
  • the system boundaries of the undercarriage 12 and upper carriage 14 are indicated by dashed boxes.
  • Components that have the same reference numerals as components in Figure 1 represent the same components or components with the same function.
  • the components 30, 42 not specified in detail in Figure 2 can have the same subcomponents as those in Figure 1.
  • the relevant statements at the beginning of the description therefore also apply to the components in Figure 2 (e.g. in relation to the embodiment of the primary energy source 42 with combustion engine 43, generator 44 and AC/DC converter 45, the Embodiment of the electrical consumer 30 with DC/DC converter 38 and low-voltage on-board network 34 and/or the embodiment of the electrical consumer 30 with DC/AC converter 36 and electric motor 32).
  • the upper carriage 14 of the illustrated embodiment of the construction machine 10 comprises a plurality of electrical consumers 30.
  • At least one of these electrical consumers 30 can comprise an electric motor 32 that drives a pump distribution gear to supply one or more hydraulic actuators (not shown).
  • the corresponding work functions can be driven directly by electrical actuators (e.g. an electric rotary drive for a slewing gear of the upper carriage 14, an electric winch motor and/or an electric linear drive for adjusting a construction machine component).
  • At least one electrical consumer 30 can comprise or represent a low-voltage on-board network 34 (e.g. a 24V on-board network).
  • the superstructure 14 comprises two electrical energy sources: an electrical energy storage device 40 (for example a battery-supported energy storage system) and a primary energy source 42 (for example an arrangement according to Fig. 1 with an internal combustion engine 43 or an arrangement with one or more fuel cells).
  • an electrical energy storage device 40 for example a battery-supported energy storage system
  • a primary energy source 42 for example an arrangement according to Fig. 1 with an internal combustion engine 43 or an arrangement with one or more fuel cells.
  • These electrical energy sources 40, 42 and consumers 30 are connected to one another via a direct voltage circuit 20, which in the embodiment discussed here represents a DC high-voltage direct current network that is designed for direct voltages in the range 60-1500 V, for example.
  • the direct voltage circuit 20 preferably comprises corresponding power electronics components such as a DC/AC converter 36 for supplying an electric motor 32, a DC/DC converter 38 for supplying a low-voltage on-board network 34 and/or an AC/DC converter 45 for connecting a generator 44 to a primary energy source 42.
  • a DC/AC converter 36 for supplying an electric motor 32
  • a DC/DC converter 38 for supplying a low-voltage on-board network 34 and/or an AC/DC converter 45 for connecting a generator 44 to a primary energy source 42.
  • the undercarriage 12 also has several electrical consumers 30 in the form of electric traction motors.
  • the electrical The drive motors 30 can be used to drive crawler supports of a crawler chassis of the undercarriage 12.
  • a direct current transmission 24 (this is shown schematically in Figure 2 as box 24 and could also be referred to as a direct current connection).
  • This is designed in particular according to the design of the direct current circuit 20 for a direct voltage of 60-1500 V.
  • the part of the direct current circuit 20 that is located in the upper carriage 14 is referred to herein as the upper carriage circuit 21 and is illustrated schematically in Figure 2 by a box 21.
  • the part of the DC voltage circuit 20 which is located in the undercarriage 12 is referred to herein as the undercarriage circuit 22 and is illustrated schematically in Figure 2 by a box 22.
  • the upper carriage circuit 21 is connected to the undercarriage circuit 22 via the DC transmission 24.
  • the construction machine 10 can have an electrical charging interface 50 on the undercarriage 12 for connecting an external energy source 60.
  • the interface 50 is preferably a DC charging interface for feeding DC energy into the direct voltage circuit 20. This means that additional components such as an OBC can be dispensed with.
  • direct current can be transmitted from the upper carriage circuit 21 to the lower carriage circuit 22 or vice versa (bidirectional DC transmission).
  • the corresponding energy flows can be controlled by a control unit (not shown).
  • the direct current transmission 24 between the sections of the construction machine 10 that rotate relative to one another i.e. between the lower carriage 12 and the upper carriage 14
  • DC slip ring bodies not shown.
  • the machine configuration according to the invention with DC transmission 24 between the upper and lower carriages 12, 14 offers several advantages with regard to the electrification of construction machinery: • Power electronic components in the undercarriage 12 of the construction machine 10 can be supplied. This enables, for example,
  • DC charging interfaces 50 are possible on the undercarriage 12 (e.g. on a crawler carrier). This means that the energy fed in can be made available to the direct current on-board network 20 in the undercarriage and uppercarriage 12, 14 via the DC transmission 24.
  • - Charging interfaces are particularly suitable for the undercarriage 12 or a crawler carrier, since the range of motion on the undercarriage 12 is smaller than on the uppercarriage 14 during mains operation.
  • - DC charging interfaces 50 also offer the advantage that no machine-side chargers 54 (e.g. on-board charger, OBC) are required.
  • OBC on-board charger

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Operation Control Of Excavators (AREA)

Abstract

L'invention concerne une machine de construction comprenant un chariot inférieur, un chariot supérieur monté rotatif sur le chariot inférieur et un système d'alimentation électrique embarqué. Le système d'alimentation électrique embarqué comprend un circuit de tension continue et au moins un consommateur électrique et au moins une source d'énergie électrique et/ou une interface pour connecter une source d'énergie externe, qui sont connectées l'une à l'autre par l'intermédiaire du circuit de tension continue. Selon l'invention, le circuit de tension continue s'étend sur le chariot supérieur et le chariot inférieur et comprend un circuit de chariot supérieur et un circuit de chariot inférieur, qui sont reliés l'un à l'autre par l'intermédiaire d'une transmission en courant continu s'étendant entre le chariot supérieur et le chariot inférieur.
PCT/EP2024/059340 2023-06-14 2024-04-05 Machine de construction à système d'alimentation électrique embarqué à tension continue Pending WO2024256053A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP24718139.9A EP4683816A1 (fr) 2023-06-14 2024-04-05 Machine de construction à système d'alimentation électrique embarqué à tension continue

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102023115441.9 2023-06-14
DE102023115441.9A DE102023115441A1 (de) 2023-06-14 2023-06-14 Baumaschine mit Gleichspannungsbordnetz

Publications (1)

Publication Number Publication Date
WO2024256053A1 true WO2024256053A1 (fr) 2024-12-19

Family

ID=90720442

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2024/059340 Pending WO2024256053A1 (fr) 2023-06-14 2024-04-05 Machine de construction à système d'alimentation électrique embarqué à tension continue

Country Status (3)

Country Link
EP (1) EP4683816A1 (fr)
DE (1) DE102023115441A1 (fr)
WO (1) WO2024256053A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010063911A1 (de) * 2010-12-22 2012-06-28 Terex Demag Gmbh Kran
US20170121937A1 (en) * 2014-06-17 2017-05-04 Volvo Construction Equipment Ab A power connection device
DE102020108856A1 (de) * 2020-03-31 2021-09-30 Liebherr-Hydraulikbagger Gmbh Mobile Arbeitsmaschine
DE102021119538A1 (de) * 2021-07-28 2023-02-02 Liebherr-Werk Ehingen Gmbh Energieversorgungssystem und -verfahren für ein Arbeitsgerät

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011108893C5 (de) * 2011-07-29 2022-05-12 Liebherr-Werk Ehingen Gmbh Antriebsvorrichtung für einen Kran
DE102015116506A1 (de) * 2015-09-29 2017-03-30 Olko-Maschinentechnik Gmbh Mobile Schachtwinde

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010063911A1 (de) * 2010-12-22 2012-06-28 Terex Demag Gmbh Kran
US20170121937A1 (en) * 2014-06-17 2017-05-04 Volvo Construction Equipment Ab A power connection device
DE102020108856A1 (de) * 2020-03-31 2021-09-30 Liebherr-Hydraulikbagger Gmbh Mobile Arbeitsmaschine
DE102021119538A1 (de) * 2021-07-28 2023-02-02 Liebherr-Werk Ehingen Gmbh Energieversorgungssystem und -verfahren für ein Arbeitsgerät

Also Published As

Publication number Publication date
DE102023115441A1 (de) 2024-12-19
EP4683816A1 (fr) 2026-01-28

Similar Documents

Publication Publication Date Title
EP3625098B1 (fr) Véhicule ferroviaire prévu pour effectuer une opération sur une voie ferrée
EP3882461B1 (fr) Pompe à béton automotrice
EP4196648A1 (fr) Pompe à béton montée sur un véhicule
EP3901379B1 (fr) Machine de travail mobile
WO2005120883A1 (fr) Systeme de gestion d'energie d'un dispositif de transport
DE102010000347A1 (de) Elektrisch angetriebenes Nebenabtriebssystem und Verfahren zu dessen Herstellung
EP3350111B1 (fr) Machine de travail électrique à stockage du retour de puissance et procédé
DE102022127920A1 (de) Elektrifizierte Bau- und/oder Materialumschlagsmaschine, insbesondere Kran
EP4230463A1 (fr) Machine autonome d'alimentation en énergie, déplaçable sur rails
DE102012201140A1 (de) Verfahren zur Energieversorgung einer mobilen Arbeitsmaschine
EP4245923B1 (fr) Engin électrique de génie civil et procédé associé de son utilisation
EP3873843B1 (fr) Grue portuaire mobile comprenant un système d'alimentation en énergie amélioré
EP4683816A1 (fr) Machine de construction à système d'alimentation électrique embarqué à tension continue
WO1998055350A1 (fr) Chariot moteur a batterie
EP3818210B1 (fr) Véhicule ferroviaire
DE102015006225A1 (de) Arbeitsmaschine, insbesondere Muldenkipper oder Truck
EP4206022A1 (fr) Système et procédé de fourniture d'énergie électrique pour véhicules ferroviaires
EP3550083B1 (fr) Engin de chantier
DE102023117826A1 (de) System mit Baumaschine und Energieversorgungsmodul
WO2020084026A1 (fr) Grue de chantier mobile comprenant une tourelle et un châssis ainsi qu'un ou plusieurs consommateurs électriques
WO2025219384A1 (fr) Machine de levage et/ou de construction, en particulier grue, et son procédé de fonctionnement
DE102008064565A1 (de) Transportfahrzeug mit einer Mehrzahl elektrischer Maschinen
AT527858A1 (de) Gleisfahrbare Baumaschine
DE102023202486A1 (de) Elektrische Arbeitsmaschine
EP2948352A1 (fr) Dispositif permettant de commander un organe d'entraînement d'un véhicule ferroviaire

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 24718139

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2024718139

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 2024718139

Country of ref document: EP

Effective date: 20251021

ENP Entry into the national phase

Ref document number: 2024718139

Country of ref document: EP

Effective date: 20251021

ENP Entry into the national phase

Ref document number: 2024718139

Country of ref document: EP

Effective date: 20251021

ENP Entry into the national phase

Ref document number: 2024718139

Country of ref document: EP

Effective date: 20251021

ENP Entry into the national phase

Ref document number: 2024718139

Country of ref document: EP

Effective date: 20251021

ENP Entry into the national phase

Ref document number: 2024718139

Country of ref document: EP

Effective date: 20251021

NENP Non-entry into the national phase

Ref country code: DE