Method for operating an electrically operated process chamber of an industrial system, industrial system, computer program product and computer readable storage medium
By receiving grid energy availability information, adjusting process variables within tolerance ranges and building buffers, the problem of high energy costs in industrial systems is solved, and efficient operation of the process room and optimization of energy consumption are achieved.
Patent Information
- Application Number
- CN202580022010.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2024-04-30
- Filing Date
- 2025-04-25
- Publication Date
- 2026-11-06
AI Technical Summary
Existing industrial systems face problems of high energy costs and complex operation when adjusting process variables, especially in process chambers with inertial variation characteristics, making it difficult to reduce energy consumption while ensuring process quality.
By receiving grid energy availability information, process variables are adjusted within the tolerance range of process variable thresholds. Buffers are built during periods of high energy availability, and power input is reduced during periods of low energy availability, thus optimizing the adjustment of process variables.
It has enabled the efficient operation of the process room, reduced energy costs, and improved the overall efficiency of the system, especially saving about 10% of energy consumption in the battery cell manufacturing process.
Smart Images
Figure CN123057773A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a method for an electrically operated process chamber for operating an industrial system, particularly a computer-implemented method, an industrial system, a computer program product, and a computer-readable storage medium. Background Technology
[0002] Methods for electrically operated process chambers for running industrial systems are generally known. Within such process chambers, process variables are typically regulated according to one or more specifications. For example, a predetermined high temperature is regulated in a furnace, a predetermined low temperature in a cooling chamber, a predetermined dry atmosphere in a drying chamber, and a predetermined high pressure in a compressed air storage chamber. Most of these process variables are regulated by inputting electrical energy, typically directly, for example, by means of electric heating or electrically operated cooling, or indirectly.
[0003] Industrial systems and their process chambers typically have dimensions that allow for the inertial variation of process variables over time. Furthermore, such industrial systems require significant amounts of energy, particularly electrical energy. For example, the energy cost for the cleanrooms and drying chambers in the battery superfactory operating in the Federal Republic of Germany is approximately €5 million. The goal of operators of industrial systems is to minimize energy costs as much as possible.
[0004] Unlike equipment used in private settings, the process variables mentioned above must be forcibly adjusted within a certain tolerance band, specifically a certain tolerance threshold, making operation complex. Furthermore, the inertial variation of process variables complicates operation. This typically leads to costly adjustments for such systems.
[0005] To minimize energy costs while simultaneously adjusting process variables as needed, they are typically adjusted to a more energy-efficient tolerance band threshold. This is because any deviation from the tolerance band threshold requires a significant amount of energy, which in turn incurs corresponding energy costs. In the prior art, it is strictly avoided to adjust process variables far from the tolerance band threshold.
[0006] German patent application 102023105346.9 discloses a manufacturing system for producing batteries, in which the focus is on reliably controlling process variables, in this case, the dew point. However, since many industries aim to reduce energy consumption, it is also important to minimize the energy requirements simultaneously, in addition to controlling process variables with high quality. Summary of the Invention
[0007] The object of this invention is to provide a method for an electrically operated process chamber for operating an industrial system, an industrial system, a computer program product, and a computer-readable storage medium that reduces or eliminates one or more of the aforementioned disadvantages. In particular, the object of this invention is to provide a solution capable of achieving more efficient operation.
[0008] The stated objective is achieved by means of a method, industrial system, computer program product, and computer-readable storage medium characterized according to the independent claims. Other advantageous designs of these aspects are given in the corresponding dependent claims. Features disclosed in the claims, description, and drawings can be combined with each other individually and in any technically meaningful manner, indicating other embodiments of the invention.
[0009] According to the first aspect, the aforementioned objective is achieved by a method, particularly a computer-implemented method, for an electrically operated process chamber for operating an industrial system, the method comprising the steps of: adjusting process variables within the process chamber, wherein the adjustment is performed by providing electrical energy from the power grid, wherein the process variables are adjusted within the process chamber within a process variable tolerance having at least one process variable threshold; receiving power grid information representing energy availability in the power grid, wherein when energy availability in the power grid is high, the electrical energy input for adjusting the process variables in the process chamber is increased, such that a buffer is established between the adjusted process variables and the process variable threshold, and wherein when energy availability in the power grid is low, the electrical energy input for adjusting the process variables in the process chamber is decreased, such that the process variables are adjusted to the maximum of the process variable threshold.
[0010] This invention is particularly based on the understanding that constantly adjusting process variables near their thresholds generally does not result in the most efficient operation of industrial systems. Specifically, this invention is based on the understanding that it is advantageous to selectively move process variables away from their thresholds during periods of high energy availability, so as to further reduce the buffer thus constructed during periods of low energy availability.
[0011] Therefore, it is acceptable to selectively tolerate fluctuations in process variables within the process variable tolerance range, which is permissible in many applications of industrial systems, as only exceeding the process variable threshold is not permitted. This is particularly relevant for lower energy process variable thresholds, i.e., the process variable thresholds within the process variable tolerance range that enable the lower energy operation of the process chamber. If, for example, a drying and cleanroom is involved in battery cell manufacturing, and the dew point should be regulated to a maximum of -65°C, then it is generally irrelevant for the operation of the drying and cleanroom whether the dew point is also regulated to -70°C or -90°C during this period. The same applies to large cooling equipment, where, although a process variable threshold of, for example, -18°C is not allowed to be exceeded toward -17°C, lower temperatures, such as -20°C, do not negatively impact operation. In an furnace to be regulated to 450°C, temperatures can also reach 470°C in many applications; however, the process variable threshold of 450°C is not allowed to be exceeded downwards, for example, to 440°C.
[0012] The inventors have discovered that, using the described method, drying and cleanrooms for battery cell manufacturing can operate with approximately 10% higher efficiency. Considering the energy cost of €5 million for such drying and cleanrooms mentioned at the beginning, this efficiency improvement results in a cost saving of €500,000.
[0013] The method establishes an electrically operated process chamber for running an industrial system. An electrically operated process chamber should be understood in particular as one in which process variables to be regulated are adjusted using electrical energy. A process chamber should also be understood as a substantially enclosed space in which industrial processes can be carried out. In addition to the drying and / or cleanrooms already mentioned, the process chamber can be a furnace, hot water storage tank, thermal storage tank, heating chamber, compressed air storage tank, cooling chamber, cold storage tank, or the like.
[0014] The process chamber exhibits a particular inertial characteristic regarding process variables, causing the buffer established after a reduction or termination of power input to gradually diminish, resulting in a slow shift of process variables towards their threshold values. Power input can be specifically understood as the use of electrical energy.
[0015] The method includes the following steps: adjusting process variables within a process chamber, wherein the adjustment is performed by providing electrical energy from the power grid. The adjustment is preferably performed computer-based, for example, by accessing the corresponding mechanism for adjusting the process variables.
[0016] Within the process room, process variables are adjusted within a tolerance range that has at least one process variable threshold. The process variable threshold within the tolerance range is, for example, a lower or upper limit that is not allowed to be exceeded. Typically, the process variable tolerance range also has a defined second process variable threshold, where the tolerance range expands between the first and second process variable thresholds. Process variables are typically adjusted between the first and second process variable thresholds.
[0017] The second process variable threshold can be either a defined process variable threshold or a physical process variable threshold, which is not allowed or cannot be exceeded for physical reasons. However, for many applications, the process variable threshold is most relevant because it is not allowed to be exceeded for process reasons that typically affect process quality.
[0018] The power grid can be, in particular, a public power grid. Preferably, the power grid is characterized by the ability to obtain grid information representing the energy availability within the grid, and said grid information is particularly available. Furthermore, the power grid can be a local power grid.
[0019] The method further includes the step of receiving grid information representing energy availability in the grid. Receiving the grid information can be done manually, automatically, and / or computer-implemented. Receiving the grid information automatically and / or computer-implemented is advantageous because it allows for the determination of the optimal power plan, as described in more detail below, to maximize the efficiency of the method.
[0020] Grid information representing energy availability within the power grid can exist in various ways and methods. In some countries, electricity availability indices are available. In others, demand for electricity is provided in a timely, simultaneous, or predictive manner. In the Federal Republic of Germany, energy availability is typically communicated through electricity prices determined on the electricity exchange. Electricity prices in the Federal Republic of Germany are currently negotiated at 15-minute and 60-minute intervals and are publicly communicated in the form of reports. Furthermore, energy availability within the grid can be provided based on its own forecasts and subsequently received. Because the share of renewable energy sources, particularly wind and solar, continues to increase, forecasts can be made especially based on predicted weather conditions.
[0021] The method proposes adjusting process variables within the process chamber such that, when energy availability in the public power grid is high, the electrical energy input used to adjust these process variables is increased, thereby creating a buffer between the adjusted process variables and their threshold values. This buffer should be understood, in particular, as an inherent buffer of the system and / or a buffer inherent to the system itself. In the case of clean and dry chambers used for battery cell manufacturing, this, for example, means adjusting the process variables to, for example, -75°C when the dew point is -65°C as the process variable threshold. Thus, the buffer is 10°C. The creation of this buffer leads to an increase in energy consumption.
[0022] The buffering mechanism ensures that once power input is reduced or stopped, the process variable does not immediately exceed its threshold. Instead, the buffer is first reduced, and the process variable remains within its tolerance range despite the reduction or cessation of energy delivery. Power is only delivered again when the process variable falls to its threshold, ensuring that the process variable does not exceed the threshold. Therefore, a buffer can be built during periods of low electricity prices characterized by high energy availability, and this buffer can subsequently be reduced during periods of high electricity prices characterized by low energy availability.
[0023] The proposal suggests reducing the electrical energy input used to regulate process variables in the process control room when energy availability in the public power grid is low, thereby maximizing the regulation of process variables to their threshold values. Delivering less electrical energy during periods of low energy availability mitigates the buffering effect.
[0024] It is possible to individually define whether energy availability is high or low. Particularly preferred is to define a predetermined availability threshold, as explained below. When the predetermined availability threshold is exceeded, power input is increased, and when it is below the predetermined availability threshold, power input is decreased. The constructed buffer can also be understood as an energy reserve.
[0025] A preferred embodiment of the method proposes that the industrial system is a system for manufacturing battery cells, the process room is a clean and / or dry room for performing the battery cell manufacturing method, and the process variable is the air humidity or dew point in the clean and / or dry room.
[0026] The method is particularly suitable for application in battery cell manufacturing, which is energy-intensive and has a large tolerance range for process variables such as air humidity and / or dew point. Furthermore, in existing battery cell manufacturing techniques, the accepted standard is to directly adjust the air humidity or dew point to the technically required limits, i.e., to process variable thresholds, in order to minimize energy consumption. Minimizing energy consumption is always important.
[0027] Fluctuations in air humidity or dew point were not considered to avoid exceeding technically required limits. However, with the aforementioned method, it is now feasible in battery cell manufacturing to variably adjust air humidity and / or dew point based on energy availability and process variable thresholds. Therefore, battery cell production can be carried out efficiently even in environments with low energy availability and / or high electricity prices.
[0028] Another preferred improvement to the method is characterized by receiving grid information for a future time period and allocating electrical energy based on that information to build a buffer, thereby minimizing the exchange value for energy availability during that time period. Thus, for example, energy planning for industrial systems can be derived. Preferably, the electrical energy input is determined based on a minimization function, wherein minimizing the exchange value for energy availability is preferably used.
[0029] In the Federal Republic of Germany, it is currently possible to provide the next day's electricity at intervals of 15 minutes or 60 minutes. From this, energy plans for process rooms and / or industrial systems can be derived. The exchange value for energy availability can be, for example, the price of electricity, such as the price per kWh.
[0030] For an exemplary time period with two intervals, the intervals hereinafter referred to as y min The exchange value for electrical energy is obtained by considering the start and end points and the deviations from them during this period, using the following relationship:
[0031]
[0032] in:
[0033] P ges : Exchange value for electrical energy
[0034] p 1,2 The exchange value for electrical energy in the first and second intervals.
[0035] y1: Process variable in the first interval
[0036] y min : Threshold for process variables
[0037] Δt: time interval
[0038] T1: Time constant of the transmission system
[0039] K: Transfer constant of the transmission system
[0040] Ideally, the above function should be minimized in order to derive an optimal energy plan.
[0041] In another preferred embodiment of the method, it is proposed that the level of power input be selected based on buffering and / or energy availability. For example, power input can be reduced when the buffering has exceeded a predetermined threshold or when energy availability is low or high.
[0042] In another preferred embodiment, high energy availability is defined by energy availability above a first availability threshold, and low energy availability is defined by energy availability below the first availability threshold. Preferably, the availability threshold is defined by an exchange value for energy availability, such as the price of electricity, particularly the price per kWh.
[0043] Furthermore, it is preferable to define a second, third, or multiple availability thresholds, which are also preferably defined to define power input, particularly in the form of a percentage between 0% and 100%.
[0044] In another preferred embodiment of the method, it is proposed that when energy availability is low and when approaching or reaching a process variable threshold, the input of electrical energy is selected such that the process variable is adjusted to or at the process variable threshold.
[0045] Another preferred embodiment of the method proposes that, when energy availability is high, electrical energy input is selected such that a predetermined buffer is first established and then maintained constant. For example, in a clean and / or dry room with a dew point of -65°C as a process variable threshold, the predetermined buffer could be 10°C, such that the dew point is at -75°C, and this value is maintained constant once -75°C is reached. In particular, this value is maintained constant until low energy availability exists and the buffer is reduced, and the dew point may decrease down to the process variable threshold.
[0046] In another preferred embodiment of the method, it is proposed that the buffer be defined based on inertia associated with a process variable. Inertia, as a physical quantity, is an influencing variable that allows the buffer to build up when energy availability is high and subsequently decrease slowly until a threshold of the process variable is reached. The buffer can also decrease based on inertia, depending on the duration of low energy availability. It is also preferred that the buffer be defined based on the duration of low energy availability.
[0047] Another preferred embodiment of the method proposes constructing a buffer such that when power input is reduced in a predetermined manner, the buffer is sufficient to adjust the process variables within the process variable tolerance range for a predetermined time period. The predetermined time period can be, for example, less than 3 hours, less than 5 hours, less than 7 hours, less than 10 hours, or less than 12 hours. The reduction in power input can also mean the cessation or termination of power input.
[0048] According to another aspect, the aforementioned objective is achieved by an industrial system, particularly an industrial system for performing the method according to one of the above-described embodiments, the industrial system comprising: a process chamber capable of adjusting process variables; a process adjustment mechanism configured to adjust process variables within the process chamber within a process variable tolerance range having at least one process variable threshold by inputting electrical energy from the power grid; a receiving mechanism configured to receive power grid information representing energy availability in the power grid; and a calculation unit configured to, when energy availability in the public power grid is high, increase the electrical energy input for adjusting process variables in the process chamber, thereby establishing a buffer between the adjusted process variable and the process variable threshold, and when energy availability in the public power grid is low, decrease the electrical energy input for adjusting process variables in the process chamber, thereby maximizing the adjustment of process variables to the process variable threshold.
[0049] The process control mechanism is configured to regulate process variables. For example, in clean and / or dry chambers, it can be configured to reduce air humidity. In cooling systems, it can be set and configured to reduce temperature. In furnaces, it can be set and configured to regulate minimum temperature. In compressed air storage systems, it can be set and configured to regulate minimum pressure.
[0050] The receiving unit is configured and structured to receive grid information representing the energy availability in the power grid. The receiving unit can also be configured as a transmitting receiving unit to transmit data.
[0051] The computing unit can be a computer and / or control device. The process chamber, process control mechanism, receiving mechanism, and / or computing unit are preferably located in one physical location. Alternatively, one, two, or more of the aforementioned components of the industrial system can be distributed and, for example, coupled wirelessly and / or wiredly to each other using signal technology.
[0052] A preferred embodiment of the industrial system is characterized in that the industrial system is a system for manufacturing battery cells, the process room is a clean and / or dry room for performing battery cell manufacturing methods, and the process variable is the air humidity or dew point in the clean and / or dry room.
[0053] According to another aspect, the aforementioned objective is achieved by a computer program product comprising instructions that cause an industrial system according to one of the above-described embodiments to perform the method steps according to one of the above-described embodiments of the method.
[0054] According to another aspect, the aforementioned objective is achieved by a computer-readable storage medium on which a computer program product according to the above aspects is stored.
[0055] For further advantages of each aspect and its feasible improvements, implementation variations and implementation details, please also refer to the descriptions of other aspects, corresponding features and improvements. Attached Figure Description
[0056] Preferred embodiments are illustrated by way of example with reference to the accompanying drawings. The drawings show:
[0057] Figure 1 A schematic view illustrating an exemplary implementation of an industrial system;
[0058] Figure 2 A schematic three-dimensional view of a system for manufacturing battery cells is shown.
[0059] Figure 3 A schematic view showing a method known in the prior art for operating a system for manufacturing battery cells;
[0060] Figure 4 Showing known in the prior art for in Figure 3 A schematic view of the electrical energy input method shown in the illustration;
[0061] Figure 5 A schematic view showing process variables that are variably adjusted over time according to a method for electrically operating a process chamber for running an industrial system;
[0062] Figure 6 Showing the use of in Figure 5 A schematic view of the electrical energy input method shown in the illustration;
[0063] Figure 7 A schematic view showing how energy availability changes over time;
[0064] Figure 8 A schematic view illustrating an exemplary method for the electrical operation of a process chamber for running an industrial system. Detailed Implementation
[0065] In the accompanying drawings, the same or substantially the same or similar elements are indicated by the same reference numerals.
[0066] The embodiments described below are preferred embodiments of the present invention. In these embodiments, the existing components of the embodiments are each independently considered features of the present invention, which also independently improve the present invention and are considered as part of the present invention individually or in combinations different from those shown. Furthermore, the described embodiments can also be supplemented by other features of the present invention already described.
[0067] Figure 1 An industrial system 100 is shown. The industrial system 100 includes a process chamber 102 in which process variables 104 can be adjusted. The process chamber 102 can be, for example, a drying and / or clean room, a cooling chamber, a furnace, or a pressure vessel. The process variables 104 can be, for example, temperature, air humidity, or pressure.
[0068] Furthermore, the industrial system 100 includes a process control mechanism 106, which is configured to adjust a process variable 104 within a process variable tolerance range 305 having at least one process variable threshold 300 within a process chamber 102 using electrical energy from the power grid 116. For example, if the process chamber 102 is a furnace, the process variable 104 is temperature, which can be adjusted by means of the process control mechanism 106. In this case, the process control mechanism 106 can be, for example, a heat radiator for adjusting the temperature 104.
[0069] Furthermore, the industrial system 100 includes a computing unit 112. In this exemplary embodiment, the computing unit 112 is equipped with a receiving mechanism 108. The receiving mechanism 108 is configured to receive grid information 110. The grid information 110 represents the energy availability in the power grid 116. For example, the grid information 110 could be the current or future electricity price, or it could be the trend of electricity prices. The industrial system 100 is coupled to the power grid 116 via a power supply access point 118.
[0070] exist Figure 2 The diagram illustrates a specific implementation variant of industrial system 100, namely system 200 for battery cell manufacturing. System 200 includes a clean and dry chamber 202 in which process variables 104, to be adjusted as dew point 204, are regulated. For this purpose, system 200 includes humidity control equipment 206. Furthermore, system 200 includes a receiving mechanism 208 and a computing unit 212 equipped with a memory 214. Power grid information 210 can be provided to the receiving mechanism 208.
[0071] System 200 is electrically coupled to power grid 216. A first microenvironment 218 and a second microenvironment 220 can be connected to system 200 to provide battery cell materials. Microenvironments 218 and 220 are configured to move battery cell materials from system 200 to another system. Furthermore, battery cell materials can be provided to system 200 via microenvironments 218 and 220.
[0072] exist Figure 3 The diagram illustrates the typical variation of the adjusted dew point 302 over time in a system known in the prior art for battery cell manufacturing. The dew point is plotted on the Y-axis. Time t is plotted on the X-axis. The dashed line represents a lower threshold 300 of the process variable, to which the dew point 302 is not allowed to exceed. For example, the lower threshold 300 can represent a dew point of -65°C. To minimize the energy input in the system 200 for battery cell manufacturing, the dew point 302 is adjusted to or slightly above the lower threshold 300 of the process variable. It is shown that the adjusted dew point 302 is not adjusted significantly higher than the desired dew point, i.e., lower in temperature, in order to minimize the electrical energy input.
[0073] exist Figure 4 The diagram schematically illustrates the use of adjustment in Figure 3 The dew point change process 302 shown represents the electrical energy input for this process. The electrical energy input 304 is essentially constant. Of course, fluctuations in the temperature of the system's surrounding environment, or due to opening the system, for example, to provide battery cell materials, may cause fluctuations in the dew point, which may also cause fluctuations in the electrical energy input 304; however, it should be assumed to be a essentially constant change process.
[0074] exist Figure 5 The diagram illustrates the variation of dew point 302 according to a process chamber method used for operating an industrial system. It shows that the process variable (here, the adjusted dew point 302) fluctuates between a lower threshold 300 and an upper threshold 306. The lower threshold 300 and the upper threshold 306 define a tolerance range 305 for the process variable.
[0075] The diagram shows that buffers 312 and 314 are built during this period and then reduced. Specifically, buffers are built in time ranges T1, T3, T5, T7, and T9. Buffers are reduced in time ranges T2, T4, T6, and T8. This process is due to the energy 304 invested. Figure 6The changes shown are caused by the process of supplying power during the time periods of constructing buffers 312 and 314. Power supply can be carried out at different power levels, for example, between 80% and 120% of the defined power. Reduced power is supplied during the time periods of reducing buffers 312 and 314, particularly in time periods T4 and T8, or no power is supplied, particularly in time periods T2 and T6.
[0076] exist Figure 5 and Figure 6 The background of the change process shown is that Figure 7 The availability of electrical energy 308 is shown. Availability 308 fluctuates over time. Specifically, during the reduction buffer periods, namely T2, T4, T6, and T8, the availability of electrical energy 308 is low. In other words, the price of electrical energy is typically high during these time periods. Therefore, electrical energy should be consumed as little as possible in system 200. This is achieved through reduction buffers 312 and 314. A first availability threshold 310 determines whether the availability of electrical energy 308 is high or low.
[0077] exist Figure 8 The diagram illustrates a method, particularly a computer-implemented method, for the electrical operation of a process chamber 102 for operating an industrial system 100. The method includes step 400: receiving grid information 110, the grid information representing energy availability 308 in a grid 216.
[0078] In step 402, the electrical input used to regulate process variable 104 in process chamber 102 is increased because the energy availability 308 in grid 116 is high. Therefore, buffers 312 and 314 are constructed between the regulated process variable 104 and the process variable threshold 300.
[0079] In step 404, the electrical energy input used to regulate process variable 104 in process chamber 102 is reduced because the energy availability 308 in the power grid is low. Therefore, process variable 104 is maximally regulated to the process variable threshold 300.
[0080] The industrial system 100 and the corresponding method described above have the advantage of variably adjusting the process variable 104, or in particular the dew point 204, to utilize energy availability for improved efficiency. In the prior art, minimizing the electrical energy input is generally important, but a method for optimizing the efficiency of adjusting the process variable is now proposed. Therefore, although the electrical energy input is not minimized, efficiency is improved, thereby reducing the energy cost of adjusting the process variable in many cases.
[0081] List of reference numerals
[0082] 100 Industrial Systems
[0083] 102 Process Room
[0084] 104 process variables
[0085] 106 Process Adjustment Mechanism
[0086] 108 Receiving Agency
[0087] 110 Power Grid Information
[0088] 112 computing units
[0089] 114 memory
[0090] 116 power grid
[0091] 118 power supply access point
[0092] 200 systems for battery cell manufacturing
[0093] 202 Clean and Dry Room
[0094] 204 dew points
[0095] 206 Humidity Control Equipment
[0096] 208 Receiving Agency
[0097] 210 Power Grid Information
[0098] 212 computing units
[0099] 214 memory
[0100] 216 power grid
[0101] 218 First Microenvironment
[0102] 220 Second Microenvironment
[0103] Threshold under 300 process variables
[0104] Dew point adjusted by Institute 302
[0105] The electrical energy input of Institute 304
[0106] 305 Process Variable Tolerance Range
[0107] 306 process variable upper threshold
[0108] 308. Availability of electrical energy
[0109] 310 First Availability Threshold
[0110] 312 First Buffer
[0111] 314 Second Buffer
[0112] τ dew point
[0113] t time
[0114] L power
[0115] V Availability
Claims
1. A method, particularly a computer-implemented method, for electrically operated process chambers (102, 202) for operating industrial systems (100, 200), the method comprising the following steps: - Adjusting process variables (104, 204) within the process chambers (102, 202) as described in (402, 404), wherein the adjustment is performed by providing electrical energy from the power grid (116, 216). - wherein the process variable (104, 204) is adjusted within the process chamber (102, 202) within a process variable tolerance range (305) having at least one process variable threshold (300). - Receive (400) grid information (110, 210) representing the energy availability in the grid (116, 216). - Wherein, when the energy availability in the power grid (116, 216) is high, the electrical energy input for adjusting the process variables (104, 204) in the process chambers (102, 202) is increased, such that a buffer (312, 314) is established between the adjusted process variables (104, 204) and the process variable threshold (300), and - Wherein when the energy availability in the power grid (116, 216) is low, the electrical energy input for adjusting the process variables (104, 204) in the process chamber (102, 202) is reduced, such that the process variables (104, 204) are adjusted to the maximum of the process variable threshold (300).
2. The method according to claim 1, wherein, - The industrial system (100, 200) is a system used for battery cell manufacturing. - The process chambers (102, 202) are clean and / or dry chambers for performing battery cell manufacturing methods, and - The process variables (104, 204) are the air humidity or dew point in the clean and / or dry room.
3. The method according to any one of the preceding claims, wherein the power grid information (110, 210) for a future time period is received, and the electrical energy is supplied based on the power grid information (110, 210) to construct the buffer (312, 314) such that the exchange value for the energy availability during the time period is minimized.
4. The method according to any one of the preceding claims, wherein the level of electrical energy input is selected based on the buffer (312, 314) and / or the energy availability.
5. The method according to any one of the preceding claims, wherein high energy availability is defined by energy availability above a first availability threshold (310), and wherein low energy availability is defined by energy availability below the first availability threshold, wherein preferably, the availability threshold is defined by an exchange value for said energy availability, in particular an energy price.
6. The method according to any one of the preceding claims, wherein when energy availability is low and when approaching or reaching the process variable threshold (300), the electrical energy input is selected such that the process variable (104, 204) is adjusted to the process variable threshold (300).
7. The method according to any one of the preceding claims, wherein when energy availability is high, the electrical energy input is selected such that a predetermined buffer (312, 314) is first constructed, and then the buffer is kept constant.
8. The method according to any one of the preceding claims, wherein the buffer (312, 314) is defined according to the inertia associated with the process variables (104, 204).
9. The method according to any one of the preceding claims, wherein the buffer (312, 314) is configured such that when the electrical input is reduced in a predetermined manner, the buffer is sufficient to adjust the process variable (104, 204) within the process variable tolerance range (305) for a predetermined time period.
10. An industrial system (100, 200), the industrial system comprising - Process chambers (102, 202) in which process variables (104, 204) can be adjusted. - A process control mechanism (106) is configured and structured to adjust the process variable (104, 204) within the process chamber (102, 202) within a process variable tolerance range (305) having at least one process variable threshold (300) by inputting electrical energy from the power grid (116, 216). - Receiving unit (108, 208), the receiving unit is configured and structured to receive grid information (110, 210) representing the energy availability in the grid (116, 216). - Computational unit (112, 212), the computational unit being configured for, When the energy availability in the public power grid (116, 216) is high, the electrical energy input for regulating the process variables (104, 204) in the process chambers (102, 202) is increased, such that a buffer (312, 314) is established between the regulated process variables (104, 204) and the process variable threshold (300), and When the energy availability in the public power grid (116, 216) is low, the electrical energy input used to regulate the process variables (104, 204) in the process chamber (102, 202) is reduced, such that the process variables (104, 204) are maximally regulated to the process variable threshold (300).
11. The industrial system (100, 200) according to claim 10, wherein... - The industrial system (100, 200) is a system used for the manufacture of the battery cells. - The process chambers (102, 202) are clean and / or dry chambers for performing battery cell manufacturing methods, and - The process variables (104, 204) are the air humidity or dew point in the clean and / or dry room.
12. A computer program product comprising instructions that cause an industrial system (100, 200) according to any one of claims 10 to 11 to perform the method steps according to any one of claims 1 to 9.
13. A computer-readable storage medium on which a computer program product according to claim 12 is stored.