Energy distribution device, in particular with dual use of the converter system

Abstract

The invention relates to an energy distribution device for a terrestrial vehicle, watercraft and / or aircraft, comprising a switchover device which is designed to divide an on-board electrical network temporarily into an isolated network (10, 10a) and further subnetworks, wherein: the isolated networks (10, 10a) of the temporarily divided on-board electrical network are designed for at least one load (6); the isolated network (10, 10a) comprises a machine of the vehicle which is designed to operate a load (6) of the isolated network (10, 10a) as a generator; and the switchover device is designed to protect the further subnetwork from network feedback caused by the load (6).

Description

[0001] Description

[0002] Energy distribution device, in particular with dual use of the converter system

[0003] The present invention relates to an energy distribution device for a land-, water- and / or air-based vehicle, a vehicle with a corresponding energy distribution device, and a method for operating the energy distribution device.

[0004] An on-board electrical system for a vehicle, such as a ship or the like, typically performs a central function by providing power to a variety of electrical devices and systems required for operation, navigation, communication, and comfort on board. For example, power distribution involves distributing electrical energy typically generated by various sources such as generators, motors, or batteries to consumers throughout the network; for example, to power lighting, the navigation system, communication equipment, and / or security systems. On-board electrical systems are typically equipped with automatic control systems that monitor and control the operation of the system. These systems can also trigger alarms if problems or malfunctions occur in the network.

[0005] The object of the present invention is in particular to improve the energy distribution of the on-board network, in particular to make it more flexible and stable.

[0006] This object is achieved by an energy distribution device having the features of claim 1. Claim 9 protects a vehicle; claims 10 to 12, 13 represent a method or computer program or

[0007] A computer program product for implementing a method described herein. The subclaims relate to advantageous developments.

[0008] According to one embodiment of the present invention, a

[0009] An energy distribution device is provided, in particular for a land-, water-, and / or air-based / supported vehicle. In one embodiment, the energy distribution device has, in particular, at least one switching device that is designed to temporarily divide an on-board power system, in particular of the vehicle, into, in particular at least or precisely, an island network and a further sub-network. In one embodiment, the switching device decouples the island network from the further sub-network at at least one point and / or establishes a connection, in particular an electrical connection, such that the island network is created, in particular is or is decoupled from the further sub-network. In one embodiment, the island network of the temporarily divided on-board power system is designed for at least one consumer.In one embodiment, this can manifest itself in different cable cross-sections and / or correspondingly designed components, in particular compared to the cable cross-sections and / or components of the further sub-grid. In one embodiment, the island grid has, in particular, at least one machine of the vehicle. In one embodiment, the machine provided / comprising the, in particular temporarily established, island grid is designed to be operated as a generator, in particular during the time when the on-board electrical system is divided into the island grid and the further sub-grid, in particular to operate the, in particular at least or exactly one, consumer of the island grid. In one embodiment, the switching device is designed to protect the further sub-grid, in particular to protect the further sub-grid from network perturbations that can arise or arise (leading to) / during operation of the consumer.

[0010] Advantageously, in one embodiment, during (continued) operation of the vehicle, a consumer with a high power consumption, in particular in comparison to other usual components of the on-board network, such as - but without restricting the generality - navigation devices or the like, can be operated temporarily.

[0011] The term “on-board electrical system” as used herein should preferably be understood as the on-board electrical system or on-board electrical systems of the vehicle. In particular, a vehicle can, in one embodiment, have one or more on-board electrical systems, which in particular are or can be connected to one another, wherein the term “on-board electrical system” here, in one embodiment, refers to the one on-board electrical system or the several on-board electrical systems that are / are temporarily divided, in particular according to the invention. In this case, the on-board electrical systems can, in one embodiment, be designed to be separable, in particular into a starboard and a port on-board electrical system, for example in ships. In the case of a division, in one embodiment, the starboard and port on-board electrical systems can be interconnected and / or can be interconnected for a temporary division of the on-board electrical system, in particular at least part of the starboard on-board electrical system and at least part of the port on-board electrical system can temporarilyform the island network and at least one other part of the starboard on-board network and at least one other part of the port on-board network temporarily form one or the further sub-network. Alternatively, in one embodiment, the starboard on-board network and the port on-board network can be or become separated during a temporary division, so that in particular at least one part of the starboard on-board network temporarily forms one or the island network and at least one other part of the starboard on-board network temporarily forms one or the further sub-network and / or at least one part of the port on-board network temporarily forms one or the island network and at least one other part of the port on-board network temporarily forms one or the further sub-network.

[0012] In one embodiment, the switching device comprises hardware, in particular a contactor, power electronics, or the like; and / or software, in particular control software, further in particular a control of the contactor(s) and / or a (software) control of the power electronics, or the like. In one embodiment, the switching device comprises means for dividing the on-board electrical system.

[0013] In one embodiment, the island grid, in particular the secondarily existing island grid, has a converter which is designed to operate the, in particular at least one, consumer, in particular the, in particular at least one consumer of the island grid. In one embodiment, the converter is designed to operate a, in particular electric, drive of the vehicle, in particular when the on-board electrical system is not divided. In one embodiment, the converter is designed for bidirectional use, in particular the converter has bidirectionality or is designed for this purpose. In one embodiment, the converter is designed as a four-quadrant converter, which in one embodiment is designed for positive and negative voltages and currents, or as a two-quadrant converter, which in one embodiment is designed for positive or negative voltages and currents.In one embodiment, bidirectional converters have three phases or are designed or constructed for three-phase bidirectional conversion.

[0014] This advantageously eliminates the need for additional converters. Furthermore, in one embodiment, no additional battery storage units and / or generator sets are required in the vehicle to operate the consumer, especially in a temporarily set-up, especially decoupled, island grid. A bidirectional converter can advantageously enable, in one embodiment, energy extraction and / or supply, or a current flow in "both directions."

[0015] In one embodiment, the island grid has at least one, in particular optical, electrical and / or magnetic, defense device. In one embodiment, the consumer has at least one, in particular optical, electrical and / or magnetic, defense device or is designed as a, in particular optical, electrical and / or magnetic, defense device. In one embodiment, the further sub-grid is designed to supply the vehicle, in particular in such a way that, at least substantially, the function and / or the (remaining) on-board electrical system, in particular, in one embodiment designed as the further sub-grid, of the vehicle is not disrupted and / or impaired.

[0016] In one embodiment, this advantageously allows the defense device to be operated temporarily, in particular without impairing and / or interrupting a function and / or the operation of the vehicle.

[0017] In one embodiment, the switching device is designed or configured to, in particular electrically, separate the further sub-grid and the island grid from each other. In one embodiment, the switching device comprises means for, in particular electrically, separating the island grid from the further sub-grid.

[0018] In one embodiment, this advantageously makes it possible to reduce or at least substantially prevent mutual influences of the island grid on the other sub-grid, or vice versa, in particular when the consumer of the island grid is (temporarily) operated. In one embodiment, the island grid has a different frequency and / or a different voltage than the other sub-grid. In one embodiment, the island grid, in particular the converter of the island grid, is designed to match a frequency and / or a voltage of the island grid to the consumer, in particular to change a frequency and / or voltage to a frequency and / or voltage required by the consumer, in particular during its operation, in particular when the on-board electrical system is or is temporarily divided into the island grid and the other sub-grid.

[0019] In one embodiment, this makes it possible for one or more converters in the on-board network to be used for dual purposes, in particular as a converter for functions of the on-board network and for the, in particular temporary, operation of the consumer in the stand-alone network. In one embodiment, this makes it possible for no further converters, in particular converters specifically designed for this purpose, and in particular no further battery storage units or generator sets, to be required for the, in particular exclusive, operation of the consumer. In particular, this makes it possible for the other sub-grid to remain or be stable despite a power peak of the consumer, in one embodiment in the MW range or in the 100 kW range, or in the 10 kW range.In one embodiment, the consumer has a power consumption, in particular a temporary power consumption, of at least 10 kW, or at least 100 kW, or at least 1 MW and / or of at most 100 MW, or of at most 10 MW, or of at most 1 MW, or of at most 100 kW.

[0020] In one embodiment, the consumer, in particular the, in particular optical, defense device, comprises at least one laser, in particular a high-power laser, in particular with a power level described herein. In one embodiment, the consumer, in particular the, in particular electrical and / or (electro-)magnetic, defense device, comprises at least one railgun and / or a Gaussian cannon (English: "coilgun"). In one embodiment, the consumer comprises a directed-energy weapon (DEW) or is designed as such.

[0021] The term "consumer" as used herein should preferably be understood as, in particular precisely, a consumer and / or a group of consumers. In particular, the consumer described herein can, in one embodiment, comprise one or more consumers of one type or different types of consumers. In one embodiment, the consumer can comprise a consumer external (to the vehicle) or the consumer can, in one embodiment, be designed as a consumer external (to the vehicle) or, in one embodiment, is designed as an external consumer, so that the vehicle, in one embodiment, can be used, in particular, as a power station.Depending on the energy requirements of the consumer, i.e. in versions depending on the energy requirements of the large number of consumers in the consumer group, the on-board network can, in one version, be divided into one or more island networks and / or one or more further sub-networks, in particular in such a way that the consumer can be operated while the further sub-network(s) remains / remains stable, at least essentially.

[0022] In one embodiment, the load, in particular an electrical load, has a one-time power consumption. In one embodiment, the load, in particular an electrical load, has an irregular and / or spontaneously recurring or recurring power consumption at a fixed rhythm.

[0023] Advantageously, in one embodiment, this makes it possible for the mechanical energy stored in the vehicle, in particular during the movement of the vehicle, to be used for the operation of the consumer.

[0024] In one embodiment, the switching device is designed to galvanically separate the island network and the further sub-network.

[0025] In one embodiment, this makes it possible to (further) reduce the effects or repercussions of the operation of the consumer, in particular on the other sub-network.

[0026] In one embodiment, the island grid comprises a plurality of converters, in particular interleaved inverters, and / or a multi-level converter, which is / are designed in particular for operating the load, in particular at least one load. In one embodiment, the converter(s) is / are designed to provide a high-voltage voltage, in particular matched to the load. In one embodiment, the switching device is designed to temporarily divide the on-board network accordingly.

[0027] In one embodiment, this advantageously allows the on-board electrical system to be divided according to the requirements of a consumer. In one embodiment, the switching device (for this purpose) comprises at least one switch and / or, in particular, an electrical, decoupler.

[0028] In one embodiment, the island network has electrical connections and / or components, in particular cables, which are designed for the operation of the consumer, wherein these in particular have a larger cross-section than electrical connections and / or cables and / or components in the further sub-network.

[0029] This can enable the consumer to operate smoothly, in particular, ensuring that no bottlenecks arise or can arise in the isolated grid, especially during operation of the consumer. In one embodiment, an isolated grid designed for the consumer can be identified by the design size of the components used, in particular compared to an isolated grid that does not have any of the consumers described herein.

[0030] According to one embodiment of the invention, a vehicle is provided, in particular a land-, water- and / or air-based vehicle. In one embodiment, the vehicle is a ship, in particular having one or more propellers, or a vehicle with wheel drive and / or chain drive. In one embodiment, the island network of the vehicle is configured to use the kinetic energy, in particular stored energy, of a drive train of the vehicle and / or of the moving vehicle, in particular for stabilizing the island network. In one embodiment, the vehicle has means, in particular on the system side, which are configured orare stored, in particular in such a way that an impact of the use of the kinetic energy of the drive train and / or the kinetic energy of the moving vehicle on the on-board network is minimized and / or an impact on, in particular, mobility aspects of the vehicle is minimized.

[0031] In one embodiment, this advantageously makes it possible for the energy stored in the movement of the vehicle to be used for the consumer of the island grid.

[0032] According to one embodiment of the invention, a method for operating an energy distribution device, in particular an energy distribution device described herein, is provided. In one embodiment, the method comprises determining and / or predicting a load usage. In one embodiment, at least one sensor and / or at least one digital processing unit can be used for the determination and / or prediction; in particular, the determination and / or prediction can be carried out with the aid of artificial intelligence. In one embodiment, the determination and / or prediction determines whether a load, in particular a defense device, in particular an optical, electrical and / or magnetic device, should or will be used and / or should be used at a point in time in the future within a predetermined period of time.In one embodiment, the method comprises dividing the vehicle electrical system using the power distribution device, in particular based on the determined and / or predicted load usage. During the dividing, in particular temporary dividing, the vehicle electrical system is or is divided into at least one island network and another sub-network. In one embodiment, the method comprises operating the load, in particular using the island network.

[0033] Advantageously, in one embodiment, this makes it possible for the on-board network to be divided according to requirements.

[0034] In one embodiment, the operation of the consumer comprises switching the machine, in particular the electric machine, of the vehicle from a motor operation to a generator operation.

[0035] In one embodiment, this can advantageously make it possible for energy stored in the movement of the vehicle to be or be able to be used for the consumer, in particular with the aid of the island grid decoupled from the further sub-grid, and / or for energy stored in the drive train of the vehicle to be or be able to be used for the consumer, in particular with the aid of the island grid decoupled from the further sub-grid. In one embodiment, this can advantageously make it possible for energy stored in the movement of the vehicle to be or be able to be used for the stabilisation of the further sub-grid, and / or for energy stored in the drive train of the vehicle to be or be able to be used for the stabilisation of the further sub-grid, in particular when the consumer is in operation.

[0036] In one embodiment, the method comprises canceling the division, in particular terminating the division, using the energy distribution device, in particular when the consumer use has ended or the consumer is no longer operated.

[0037] Advantageously, in one embodiment, this makes it possible for the on-board network to be (only) temporarily divided for the use of the consumer and, after the end of the use, the island network to be (re)connected or, in particular, electrically coupled to the other sub-network.

[0038] The terms "a" or "an" as used herein are defined as "one or more." The terms "another" and "another," and any other variations thereof, are defined as "at least one other."

[0039] According to one embodiment of the present invention, the vehicle has means for determining and / or predicting consumer usage, in particular at least one sensor and / or at least one digital processing unit. In one embodiment, the vehicle has means for dividing the on-board electrical system, in particular a power distribution device as described herein, and further in particular a switching device as described herein. In one embodiment, the means for dividing the on-board electrical system are further configured to (re)deactivate or reverse the division of the on-board electrical system.In one embodiment, the vehicle has means for operating the load, in particular at least one, in particular electrical, machine, in particular additionally a converter designed for operating the load. In one embodiment, the converter is designed in the (non-divided) on-board electrical system for operating the, in particular electrical, machine. In other words, in one embodiment, the converter can be used for dual purposes, in particular for operating the load and for operating the, in particular electrical, machine.

[0040] This advantageously makes it possible, in one embodiment, to avoid the need to expand the on-board electrical system to operate the consumer with additional battery storage units, power electronics, or the like, particularly compared to systems without a power distribution device. Rather, existing components can be used, at least substantially, to operate the consumer. This advantageously makes it possible, in one embodiment, to achieve a more compact design, and in particular, to utilize the vehicle's mechanical energy to operate the consumer.

[0041] A means within the meaning of the present invention can be designed in hardware and / or software, in particular at least one, in particular digital, processing unit, in particular a microprocessor unit (CPU), graphics card (GPU) or the like, preferably connected to a memory and / or bus system for data or signals, and / or one or more programs or program modules. The processing unit can be designed to execute instructions implemented as a program stored in a memory system, to detect input signals from a data bus, and / or to output output signals to a data bus. A memory system can have one or more, in particular different, storage media, in particular optical, magnetic, solid-state, and / or other non-volatile media. The program can be designed in such a way that it embodies the methods described here oris capable of carrying out, so that the processing unit can carry out the steps of such methods and thus in particular can operate or monitor the energy distribution device and / or the vehicle with the energy distribution device. In one embodiment, a computer program product can have, in particular be, a storage medium, in particular a computer-readable and / or non-volatile one, for storing a program or instructions or with a program or instructions stored thereon. In one embodiment, execution of this program or these instructions by a system or a controller, in particular a computer or an arrangement of several computers, causes the system or the controller, in particular the computer(s), to carry out a method described here or one or more of its steps, or the program or the instructions are configured to do so.

[0042] In one embodiment, one or more, in particular all, steps of the method are carried out completely or partially automatically, in particular by the controller or its means.

[0043] Further advantages and features emerge from the subclaims and the exemplary embodiments. The following shows, partly schematically:

[0044] Fig. 1: a power distribution device according to an embodiment of the present invention in a non-divided state; and

[0045] Fig. 2: the energy distribution device of Fig. 1 in split state(s);

[0046] Fig. 3: a flow chart illustrating a preferred embodiment of the method according to the invention; and

[0047] Fig. 4: another energy distribution device according to an embodiment of the present invention.

[0048] Fig. 1 shows an on-board electrical system of a vehicle in a state not divided into an island network and a further sub-network, in which the vehicle has two, in particular electrical, machines 1, which, in one embodiment, are used to move the vehicle. The machines 1 are connected via converters to an (electrical) bus 2, which in turn is fed by generators 4. Furthermore, the on-board electrical system has a switch with which a side on the right in the illustration can be connected, in particular electrically, to a side on the left in the illustration. This can be provided in an embodiment in which the vehicle is a ship and has an on-board electrical system which is provided for a starboard side and a port side, or in an embodiment in which the vehicle has a chain drive, which are or can be operated, in particular, independently of one another.The switch can, in one embodiment, also be closed, in particular when divided into an island network and another sub-network. Furthermore, the exemplary on-board network in Figure 1 has, in particular, usual consumers of the on-board network 3. Furthermore, consumers 6 are shown in dashed lines. These are (temporarily) not used in the illustration in Figure 1. Furthermore, converters are shown which, in the on-board network shown as an example, convert a voltage and / or a frequency of the generators 4 for operating the machines 1 and the consumers of the on-board network 3, which are different from the consumers 6. A switching device is not shown in the figures, in particular because this can act differently in different embodiments and / or can be designed differently for dividing the on-board network.

[0049] The electrical system shown in Fig. 1 is to be interpreted as an exemplary electrical system. Rather, the electrical system may have a different, particularly asymmetrical, structure and / or include other or additional components, such as battery storage units, fuel cells (systems), or the like.

[0050] Fig. 2 schematically shows the energy distribution device from Fig. 1 in a split state or in various split states, wherein an island network 10 and an island network 10a are shown. The island network 10 has an electrical machine 1 and a converter which, in particular with the aid of the switching device, operate the load 6. The further sub-network (without the dashed border) can and will continue to be used to supply the loads of the on-board network 3. The converter of the island network 10 is configured such that, as in Fig. 1, it can operate the electrical machine on the one hand and, on the other hand, can operate the load 6 in the island network, in particular with the aid of energy which is obtained or generated by the generator operation of the electrical machine 1.In the isolated network 10a, the vehicle electrical system is divided into the isolated network 10a and the further sub-network such that two different energy sources, namely the electric machine 1 and the generator 4, operate the load 6, in particular with the aid of a converter each. The isolated networks 10 and 10a can exist (temporarily) in parallel or be separated (temporarily) one after the other from the further sub-network using the energy distribution device, in particular its switching device. In embodiments, other or further divisions of the vehicle electrical system are possible, in particular such that the temporarily created / (electrically) decoupled isolated network(s) are configured to operate the load(s) 6.

[0051] The arrows shown in Figure 2 indicate the directions of energy flow, particularly via the converters.

[0052] Fig. 3 shows a flowchart to illustrate a preferred embodiment of the method according to the invention. The method comprises determining and / or predicting a consumer use S10, dividing the vehicle electrical system S20 with the aid of the energy distribution device based on the determined and / or predicted consumer use into at least one island network and a further sub-network; and operating the consumer S40. Furthermore, the method can comprise a (temporally) upstream switching S30 of the electric machine from motor operation to generator operation (shown in dashed lines). Furthermore, the method can comprise canceling the division S50, in particular with the aid of the energy distribution device, further in particular with the aid of the switching device, in particular when the consumer use has ended.

[0053] Fig. 4 schematically shows a further energy distribution device according to an embodiment of the present invention. Fig. 4 is intended in particular to show that the energy distribution device can have different components and / or different combinations of components, such as in particular, further in particular electrical, machine(s) 1, such as in particular power engines, further in particular internal combustion engines, fuel cells or the like; generator(s) 4, one or more drive trains, transmissions and / or clutches 7, as well as one or more consumers 6, as described in particular herein. In embodiments, other constellations, connections and / or arrangements are possible or provided, in particular depending on the vehicle and / or the consumer 6 to be operated.The drive trains, transmissions and / or clutches 7 are shown in dashed lines, in particular to show - without restricting generality - that the on-board electrical system is or can be divided at these points, in particular more easily, in particular by a switching device described herein. For example, the on-board electrical system can have one or more (power) machines 1, which act in particular at different points in the one drive train or the multiple drive trains. In the embodiment shown in Fig. 4, for example, a propeller of a vehicle designed as a ship can be arranged on the drive train, transmission and / or clutch 7, which is arranged furthest to the right in Fig. 4, without restricting generality. The on-board electrical system can be divided at different points, in particular into one (or more) island grids, such that energy is supplied to one or morecan be or is made available to the consumer 6 - shown in Fig. 4 by the arrows, whereby depending on the consumer 6 and / or island network(s), energy can be or is made available to the consumer 6 at different points, in particular via a converter (not shown), further in particular if the on-board network is divided. Accordingly, it can be seen that energy can be branched off or made available from different sections of the arrangement shown, in particular in order to operate a consumer 6 and / or in order to (temporarily) ensure the stability of a sub-network, at least substantially.

[0054] Although exemplary embodiments have been explained in the preceding description, it should be noted that a multitude of modifications are possible. Furthermore, it should be noted that the exemplary embodiments are merely examples and are not intended to limit the scope of protection, applications, or structure in any way. Rather, the preceding description provides the skilled person with a guide for implementing at least one exemplary embodiment, whereby various changes, particularly with regard to the function and arrangement of the described components, can be made without departing from the scope of protection as it results from the claims and equivalent combinations of features.

[0055] 1 machine

[0056] 2 Bus 3 Consumers of the on-board network

[0057] 4 Generator

[0058] 6 consumers

[0059] 7 Drivetrain; Transmission; Clutch

[0060] 10, 10a Island grid S10 Determining and / or forecasting a consumer load

[0061] S20 Splitting the on-board network

[0062] S30 Switching the machine

[0063] S40 Operation of the consumer

[0064] S50 Cancellation of the division

Claims

Patent claims 1. An energy distribution device for a land-based, water-based, and / or air-based vehicle, comprising a switching device configured to temporarily divide an on-board power system into an island power system (10, 10a) and a further sub-network, wherein the island power system (10, 10a) of the temporarily divided on-board power system is configured for at least one consumer (6); wherein the island power system (10, 10a) comprises a machine of the vehicle configured to operate a consumer (6) of the island power system (10, 10a) as a generator; and wherein the switching device is configured to protect the further sub-network from network perturbations caused by the consumer (6).

2. Energy distribution device according to the preceding claim, characterized in that the island network (10, 10a) has a converter which is designed for the operation of the consumer (6).

3. Energy distribution device according to one of the preceding claims, characterized in that the island network (10, 10a), in particular the consumer (6), has at least one, in particular optical, electrical and / or magnetic, defense device and / or the further sub-network is designed to supply the vehicle.

4. Energy distribution device according to one of the preceding claims, characterized in that the switching device is arranged to electrically separate the further sub-network and the island network (10, 10a) from one another.

5. Energy distribution device according to one of the preceding claims, characterized in that the island network (10, 10a) has a different frequency and / or a different voltage than the further sub-network.

6. Energy distribution device according to one of the preceding claims, characterized in that the, in particular electrical, consumer (6) has a has a one-off or irregular and / or spontaneously recurring or recurring power consumption at a fixed rhythm.

7. Energy distribution device according to one of the preceding claims, characterized in that the switching device is designed to galvanically separate the island network (10, 10a) and the further sub-network.

8. Energy distribution device according to one of the preceding claims, characterized in that the island network (10, 10a) has a plurality of converters, in particular nested converters, and / or a multi-level converter, which is / are designed in particular for the operation of the consumer (6).

9. Vehicle with an on-board power system comprising an energy distribution device according to one of the preceding claims, characterized in that the vehicle is a ship, in particular with a propeller, or a vehicle with a wheel and / or chain drive and / or that the island network (10, 10a) is designed to use the, in particular stored, kinetic energy of a drive train of the vehicle and / or of the moving vehicle, in particular for stabilizing the island network (10, 10a).

10. A method for operating an energy distribution device according to any one of the preceding claims, characterized in that the method comprises: Determining and / or predicting (S10) a consumer usage; Dividing (S20) the on-board network using the energy distribution device based on the determined and / or predicted consumer usage into at least one island network (10, 10a) and another sub-network; and operating (S40) the consumer (6).

11. Method according to the preceding claim, characterized in that the operation of the consumer (6) comprises switching (S30) the engine of the vehicle into generator operation.

12. Method according to one of the preceding claims 10 or 11, characterized in that the method further comprises: Canceling (S50) the division using the energy distribution device, in particular when the consumer use is finished.

13. Computer program or computer program product, wherein the Computer program or computer program product, in particular instructions stored on a computer-readable and / or non-volatile storage medium, which, when executed by one or more computers, cause the computer(s) or a controller of the on-board network, in particular of the energy distribution device, to carry out a method according to one of claims 10 to 12.

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