DE102020216261A1 - Method and control device for supplying energy to an agricultural machine - Google Patents

Abstract

A method for supplying an electrically driven agricultural machine (10) with energy, with the steps: reading in a state of charge (4) of an energy store (11) of the electrically driven agricultural machine (10) into an energy management system (50), reading in at least one energy availability state ( 22, 32) of an energy-generating system (20) into the energy management system (50), reading in an operating state (42) of a charging station (40) for charging the energy store (11) of the electrically driven agricultural machine (10) with the energy-generating system (20) energy that can be made available into the energy management system (50), operating the energy management system (50) to control a charging process (9) of the energy store (11) of the electrically driven agricultural machine (10) at the charging station (40) depending on the state of charge (4) that has been read in Energy store (11), the at least one read-in energy supply state (22, 32) of the energy-generating System (20) and the read-in operating status (42) of the charging station (40).

Description

technical field

The invention relates to a method for supplying energy to an electrically driven agricultural machine.

State of the art

Energy management for the operation of energy-related generating units and consumption units is known from the prior art. With such an energy management, the energy requirement and the energy supply of energy consumers can be planned.

Presentation of the invention

In one aspect, the invention relates to a method for supplying an electrically driven agricultural machine with energy. The agricultural machine can be a machine used in agriculture or a vehicle used in agriculture. The agricultural machine can be designed as a mobile agricultural machine. The electrically driven agricultural machine can have an energy store with which the agricultural machine can be driven electrically. According to one embodiment of the method, the energy store of the electrically driven agricultural machine can have an accumulator or a battery, with which the electrically driven agricultural machine can be electrically driven.

According to one embodiment of the method, the electrically driven agricultural machine can be designed as a plug-in hybrid vehicle or as a full hybrid vehicle. The electrically driven agricultural machine can have a corresponding hybrid drive. The electrically driven agricultural machine can also be designed as an electric vehicle. The electrically driven agricultural machine can have an electric drive.

As a step, the method includes reading a state of charge of an energy store of the electrically driven agricultural machine into an energy management system. As further steps, the method can include providing and transmitting the state of charge for reading in the state of charge from the energy management system. The energy store or the electrically driven agricultural machine can provide the state of charge, which can be transmitted to the energy management system via an IT infrastructure. The state of charge can be provided wirelessly. The energy management system can wirelessly read in the state of charge via the IT infrastructure. The state of charge can be a current or future state of charge of the energy store. Unless explicitly described, each of the states described in connection with the invention can be a corresponding current or future state.

The energy management system can be a system that makes available the energy that can be provided by an energy-generating system depending on the energy consumption of an electrically driven agricultural machine for charging an energy store of the agricultural machine. The system can be a distributed system. The energy consumption can be current or future energy consumption. The system can allocate the energy that can be provided by the energy-generating system depending on the energy consumption of the electrically driven agricultural machine for charging the energy store of the agricultural machine.

As a further step, the method includes reading in at least one energy supply state of an energy-generating system into the energy management system. The energy supply state can indicate an availability of the energy generated by the energy-generating system, where the availability can be a current availability or a future availability.

As further steps, the method can include providing and transmitting the at least one energy availability state of the energy-generating system for reading in the energy availability state from the energy management system. The at least one energy availability status can be provided by the energy-generating system and can be transmitted to the energy management system via the IT infrastructure.

As a further step, the method includes reading into the energy management system an operating state of a charging station for charging the energy store of the electrically driven agricultural machine with energy that can be provided by the energy-generating system. According to one embodiment, the charging station can be a rapid charging station. The operating state of the charging station can be an occupancy of the charging station, for example a current or future occupancy of the charging station. Furthermore, the operating state of the charging station can be an occupancy period of the charging station, for example a current or future occupancy period. The occupancy period can indicate how long the charging station is occupied or will be occupied in the future.

As a further step, the method includes operating the energy management system to control a charging process of the energy store of the electrically driven agricultural machine at the charging station. Operating the energy management system can include automatic operation of the energy management system to provide energy for charging the energy store of the electrically driven agricultural machine at the charging station.

Controlling the charging process of the energy store can include assigning a charging station for charging the energy store. Assigning may include assigning a location to a charging location. Alternatively or additionally, the assignment can include a temporal assignment to a loading time. The charging station can be assigned as a function of the state of charge of the energy store that has been read in. As an alternative or in addition, the charging station can be assigned as a function of the at least one read-in energy supply state of the energy-generating system. As a further alternative or in addition, the charging station can be assigned as a function of the operating state of the charging station that has been read in. The assignment of the charging station can be a future assignment of the charging station for a future charging process of the energy store at the charging station.

According to a further embodiment of the method, the energy management system can be operated in such a way that a charging process is only carried out when, taking into account the read-in energy supply state of the energy-generating system, sufficient energy is available for rapid charging of the electrically driven agricultural machine at the charging station.

According to a further embodiment of the method, as a further step, the method can include reading a working state of the electrically driven agricultural machine into the energy management system. As further steps, the method can include providing and transmitting the working status of the electrically driven agricultural machine for reading in the working status from the energy management system. The working status can be transmitted to the energy management system from the electrically driven agricultural machine or a working device of the electrically driven agricultural machine via the IT infrastructure. The working state may indicate that the electrically powered farm machine or implement is being operated.

The working state can also be an energy consumption state of the electrically driven agricultural machine or the working device. The power consumption state can be a current or future power consumption state. Furthermore, the energy consumption state can be a charge state of the energy store. In the operating step, an energy required for an operating state can also be compared with a charging capacity of the energy store.

According to a further embodiment of the method, as a further step, the method can include reading into the energy management system a state of the surroundings of an agricultural area worked on by the electrically driven agricultural machine. As further steps, the method can include providing and transmitting the state of the environment for reading in the state of the environment from the energy management system. The state of the environment can be transmitted to the energy management system from the electrically driven agricultural machine or an implement of the electrically driven agricultural machine via the IT infrastructure. The environmental condition can indicate soil moisture, for example.

According to a further embodiment of the method, the step of operating the energy management system can be carried out as a function of the working state of the electrically driven agricultural machine that has been read in. The charging process of the energy store of the electrically driven agricultural machine at the charging station can thus be controlled as a function of the read working state of the electrically driven agricultural machine. A charging process or charging of the energy store can thus advantageously be assigned as a function of a current or future working state.

According to a further embodiment of the method, at least one future energy supply state of the energy-generating system can be read in the step of reading in the at least one energy supply state. The future energy supply status of the energy-generating system can include weather data. Thus, the power supply state can be a weather dependent state. The future energy supply status of the energy-generating system can also be determined as a function of a weather forecast will. The future energy supply status can be determined, for example, as a function of a future wind strength or a future availability of solar radiation. An energy supply state can thus advantageously be taken into account in a more weather-dependent manner by an energy-generating system based on renewable energies.

According to a further embodiment of the method, the energy-generating system can have a biogas plant. The biogas plant can be operated by an operator of the energy-generating system in-house. According to this embodiment, the step of reading in at least one energy supply state can include reading in an energy supply state of the biogas plant. The energy supply status of the biogas plant can be a corresponding current or future status. A biogas plant operated in an agricultural operation can thus be taken into account when operating the energy management system and for controlling the charging process of the energy store.

According to a further embodiment of the method, the energy-generating system can have a photovoltaic system. The photovoltaic system can be operated by the operator of the energy-generating system in a separate operation. According to this embodiment, the step of reading in at least one energy supply state can include reading in an energy supply state of the photovoltaic system. The energy supply status of the photovoltaic system can be a corresponding current or future status. A photovoltaic system operated in the agricultural operation can thus also be taken into account when operating the energy management system and for controlling the charging process of the energy store.

According to a further embodiment of the method, energy supply states of the biogas system and the photovoltaic system can be compared. For this purpose, these states can be communicated between the systems and transmitted to the energy management system. The energy management system can, for example, control the charging process depending on both states of the systems and take into account a higher state of energy availability.

According to a further embodiment of the method, the energy-generating system can have an intermediate energy store for temporarily storing energy generated with the energy-generating system. The buffer store can be a kinetic buffer store or a battery store. The intermediate store can also be designed as a transportable intermediate store. According to this embodiment, the method can have, as a further step, reading in a storage state of the intermediate energy store for charging the energy store of the electrically driven agricultural machine with energy temporarily stored in the intermediate energy store via the charging station. The intermediate energy store can thus buffer energy provided by the energy-generating system in order to control a future charging process of the energy store in the step of operating the energy management system. In addition, energy losses in the intermediate energy store can be advantageously minimized in this way.

According to a further embodiment of the method, the energy management system can be operated with a cloud-based IT infrastructure in the step of operating the energy management system. At least one of the reading steps can thus be carried out cloud-based or via a cloud. Each of the states described can thus be transmitted to the energy management system in a cloud-based manner or via the cloud.

According to a further specific embodiment, the step of operating the energy management system can include comparing an energy consumption of the electrically driven agricultural machine with the at least one read-in energy supply state of the energy-generating system. The comparison of the energy consumption of the electrically driven agricultural machine can be carried out alternatively or additionally with each of the other states described. The energy consumption can be a current or future energy consumption of the electrically driven agricultural machine.

The operation of the energy management system or the control of the charging process of the energy store can be carried out depending on the comparison. With a currently high energy supply state and a future high energy consumption of the electrically driven agricultural machine, the energy management system can be operated, for example, such that a current charging process of the energy store of the electrically driven agricultural machine can be controlled at the charging station. Controlling can assign the electrically driven agricultural machine to a charging station for a loading process at a current or future point in time.

According to a further embodiment, the method can include, as a further step, operating the energy management system to control the supply of at least one energy consumer. The further step can be carried out when the electrically driven agricultural machine is in idle mode. If the electrically driven agricultural machine is in idle mode, an energy consumer can thus be operated with energy that can be provided by the energy-generating system. The energy that can be provided can thus be used advantageously for peak shaving.

According to a further embodiment of the method, this can include, as a further step, operating the energy management system for fleet management of at least two electrically driven agricultural machines for controlling a charging process from a respective energy store of the electrically driven agricultural machines.

character list

• 1 shows a schematic illustration for explaining a method for supplying power to an electrically driven agricultural machine according to an embodiment.
• 2 shows a schematic flow chart with steps of the method for supplying power from an electrically driven agricultural machine.

Detailed Description of Embodiments

1 shows an energy management system 50. The energy management system 50 is connected via a cloud-based IT infrastructure 60 to an electrically driven agricultural machine 10, an energy-generating system 20 and a charging station 40. The energy management system 50 is also connected to an optional intermediate energy store 51 via the cloud-based IT infrastructure 60 . The energy management system 50 is also connected to an optional energy consumer 70 via the cloud-based IT infrastructure 60.

The energy-generating system 20 has according to in 1 embodiment shown on two energy-generating plants. According to this embodiment, the energy-generating system 20 has a biogas system 21 and a photovoltaic system 31 . The biogas plant 21 transmits at least one of a current energy supply status 22 and a future energy supply status 23 of the biogas plant 21 via the cloud-based IT infrastructure 60 to the energy management system 50. The photovoltaic system 31 transmits at least one of a current energy supply status 32 and a future energy supply status 33 via the cloud-based IT infrastructure 60 to the energy management system 50. In addition, the intermediate energy store 51 transmits a storage status 52 via the IT infrastructure 60 to the energy management system 50. The intermediate energy store 51 is connected to at least one of the systems in order to store energy generated by it.

The electrically driven agricultural machine 10 transmits a state of charge 4 of an energy store 11 of the electrically driven agricultural machine 10 via the cloud-based IT infrastructure 60 to the energy management system 50. In addition, the electrically driven agricultural machine 10 optionally transmits a working status 6 of the electrically driven agricultural machine 10 via the cloud-based IT infrastructure 60 to the energy management system 50.

The charging station 40 also transmits an operating status 42 of the charging station 40 via the cloud-based IT infrastructure 60 to the energy management system 50. The energy management system 50 is set up to control a charging process 9 of the energy store 11. The electrically driven agricultural machine 10 is controlled on a radio basis. According to one embodiment, depending on the states read into the energy management system 50 , the electrically driven agricultural machine 10 is assigned a free charging station 40 which can approach the electrically driven agricultural machine 10 for a charging process 9 . The energy management system 50 is set up to check that during a charging process 9 of the energy store 11 the energy provided by the energy-generating system 20 is sufficient for a partial or complete charging of the energy store 11 .

According to one embodiment, the energy provided is present as buffered energy in the intermediate energy store 51 . To charge the energy store 11, the charging station 40 is connected to the energy-generating system 20 or its installations via the optional energy store 11.

2 shows steps S1a to S4 for carrying out a method for supplying the electrically driven agricultural machine 10 with energy according to an embodiment and according to a timing of the steps. In a step S1a, the working state 6 is driven electrically NEN agricultural machine 10 is read into the energy management system 50 . In a further step S1b, the state of charge 4 of the energy store 11 of the electrically driven agricultural machine 10 is read into the energy management system 50 . In further steps S1c and S1d, the respective energy supply states 22, 32 of the biogas system 21 and the photovoltaic system 31 of the energy-generating system 20 are read into the energy management system 50. In a further step S1e, an operating state 42 of the charging station 40 for charging the energy store 11 is read. The import is based on the zur 1 described respective transmission via the cloud-based IT infrastructure 60.

In a further step S2, an energy consumption of the electrically driven agricultural machine 10 is compared with at least one of the read-in readiness states 22, 32 of the energy-generating system 20. In a further step S3, the energy management system 50 is operated based on the step S2 of comparing. In a further step S4, the electrically driven agricultural machine 10 is controlled by the energy management system 50 in such a way that a charging process 9 of the energy store 11 of the electrically driven agricultural machine 10 is carried out at the charging station 40 depending on the comparison.

Reference List

4

state of charge

6

working condition

9

loading process

10

agricultural machine

11

energy storage

20

energy generating system

21

biogas plant

22, 32

power supply states

23, 33

future energy supply states

31

photovoltaic system

40

charging station

42

operating condition

50

energy management system

51

intermediate energy storage

52

memory state

60

cloud-based IT infrastructure

70

energy consumer

S1a to S1e

reading steps

S2

comparison step

S3

Operation of energy management system

S4

charge control

Claims (10)

Method for supplying an electrically driven agricultural machine (10) with energy, with the steps: reading (S1b) a state of charge (4) of an energy store (11) of the electrically driven agricultural machine (10) into an energy management system (50), reading (S1c, S1d) of at least one energy supply state (22, 32) of an energy-generating system (20) in the energy management system (50), reading (S1e) an operating state (42) of a charging station (40) for charging the energy store (11) of the electrically driven agricultural machine ( 10) with energy that can be made available by the energy-generating system (20) into the energy management system (50), operating (S3) the energy management system (50) to control (S4) a charging process (9) of the energy store (11) of the electrically driven agricultural machine (10) at the charging station (40) depending on the state of charge (4) read in of the energy store (11), the at least one read-in state of readiness for energy (2 2, 32) of the energy-generating system (20) and the read-in operating state (42) of the charging station (40). procedure after claim 1 , with the further step of reading (S1a) a working state (6) of the electrically driven agricultural machine (10) into the energy management system (50), wherein the step of operating (S3) the energy management system (50) depending on the working state (6 ) of the electrically driven agricultural machine (10) is carried out. procedure after claim 1 or 2 , wherein in the step of reading (S1c, S1d) the at least one energy supply state (22, 32) at least one future energy supply state (23, 33) of the energy-generating system (20) is read. Method according to one of the preceding claims, in which the energy-generating system (20) has a biogas plant (21), and in which the step of reading in (S1c, S1d) at least one energy supply state (22, 32) involves reading in (S1c) an energy supply state ( 22) of the biogas plant (21). Method according to one of the preceding claims, wherein the energy-generating system (20) has a photovoltaic system (31), and wherein the step of reading in (S1c, S1d) at least one energy supply state (22, 32) has reading in (S1d) an energy supply state (32) of the photovoltaic system (31). Method according to one of the preceding claims, wherein the energy-generating system (20) has an energy buffer store (51) for temporarily storing energy generated with the energy-generating system (20), the method including a further step of reading in a memory state (52) of the energy buffer store ( 51) for charging the energy store (11) of the electrically driven agricultural machine (10) with energy temporarily stored in the energy store (51) via the charging station (40). Method according to one of the preceding claims, wherein in the step of operating (S3) the energy management system (50), the energy management system (50) is operated with a cloud-based IT infrastructure (60). Method according to one of the preceding claims, wherein the step of operating (S3) the energy management system (50) involves comparing (S2) an energy consumption of the electrically driven agricultural machine (10) with the at least one read-in energy supply state (22, 32) of the energy-generating system (20 ) having. Method according to one of the preceding claims, with the further step of operating the energy management system (50) to control a supply of at least one energy consumer (70) when the electrically driven agricultural machine (10) is in an idle mode. Method according to one of the preceding claims, with the further step of operating the energy management system (50) for fleet management of at least two electrically driven agricultural machines (10) for controlling charging processes (9) from a respective energy store (11) of the electrically driven agricultural machines (10 ).

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