Electrolytic apparatus operating system

Abstract

To provide an electrolytic device operation system capable of controlling soundness of an electrolytic device according to a request of an electrolytic device user or the like.SOLUTION: This device is provided with an electrolytic device 100, a control part 126, a soundness target value input part 601, and a control parameter calculation part 232. The electrolytic device has a plurality of electrolytic cells 110a for producing hydrogen by electrolyzing water. The control unit controls the control target based on a control parameter that affects the soundness of the control target. The soundness target value input unit is provided for a system user to input a soundness target value that is a target value of the soundness. The control parameter calculation unit calculates a control parameter of the control target based on the soundness target value.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an electrolysis device operation system. [Background technology]

[0002] Patent Document 1 proposes an electrolysis system that produces hydrogen by electrolyzing water using electrical energy generated by solar cells. The electrolysis system in Patent Document 1 determines that, among multiple electrolytic devices, electrolytic devices with low resistance values ​​are less deteriorated and gives them a higher usage priority, while determining that electrolytic devices with high resistance values ​​are more deteriorated and gives them a lower usage priority. Furthermore, the electrolysis system in Patent Document 1 stops the use of electrolytic devices whose resistance values ​​exceed a threshold and generates an alarm to allow the user to identify the deteriorated electrolytic devices. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6897250 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the above-mentioned conventional techniques only reduce the frequency of use of electrolytic devices with high resistance values, but are unable to control the progression of deterioration of the electrolytic devices. Furthermore, the above-mentioned conventional techniques do not reflect the needs of electrolytic device users and electrolytic device manufacturers regarding the progression of deterioration of the electrolytic devices in the control of the electrolytic devices, making it difficult for electrolytic device users to introduce electrolytic devices or for electrolytic device manufacturers to reuse them.

[0005] Electrolysis device users operate their electrolysis devices differently depending on the purpose of hydrogen production, and are unable to grasp the usable life of the electrolysis device or the amount of hydrogen that can be produced. This makes it difficult for electrolysis device users to formulate business plans using electrolysis devices, and makes it difficult to promote the introduction of electrolysis devices.

[0006] Furthermore, even when electrolysis equipment manufacturers reuse electrolysis equipment and its internal devices, they are unable to predict in advance the timing and amount of reusable electrolysis equipment and internal devices that will be generated. As a result, electrolysis equipment manufacturers are unable to formulate business plans for the reuse of electrolysis equipment, and the reuse of water electrolysis equipment and its internal devices is not progressing.

[0007] In view of the above, an object of the present invention is to provide an electrolysis device operation system that can control the health of an electrolysis device in accordance with the needs of the system user. [Means for solving the problem]

[0008] To achieve the above object, one aspect of the present invention includes an electrolysis device (100), a control unit (126), a target health value input unit (601), and a control parameter calculation unit (232). The electrolysis device has a plurality of electrolysis cells (110a) that electrolyze water to produce hydrogen. The control unit controls the control object based on control parameters that affect the health of the control object. The target health value input unit is used by a system user to input a target health value, which is a target value for the health of the control object. The control parameter calculation unit calculates the control parameters of the control object based on the target health value. The control object is the electrolysis device.

[0009] This allows the electrolytic device to be controlled based on control parameters that reflect the system user's wishes, and the health of the electrolytic device can be brought closer to the target value desired by the system user.

[0010] The reference numerals in parentheses for the above components indicate the corresponding relationship with the specific means described in the embodiments to be described later. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a block diagram of an electrolysis device operation system according to an embodiment of the present invention. [Figure 2] FIG. 1 is a block diagram of an electrolysis device. [Figure 3]FIG. 10 is a diagram showing the relationship between the target value of the state of health of the electrolysis device and the cumulative amount of hydrogen produced or the cumulative operation time. [Figure 4] FIG. 10 is a diagram showing the relationship between the target value of the state of health distribution of the electrolysis device and the cumulative amount of hydrogen produced or the cumulative operation time. [Figure 5] FIG. 10 is a diagram showing an example of priority setting values ​​for four characteristics of the electrolysis device. [Figure 6] FIG. 2 is a block diagram of an electrolysis device management system. [Figure 7] FIG. 2 is a block diagram of a control parameter calculation unit. [Figure 8] FIG. 10 is a diagram showing an example of a health map showing the relationship between the health of the electrolysis device and control parameters. [Figure 9] FIG. 10 is a diagram showing an example of a health map showing the relationship between the health of the electrolysis device and control parameters. [Figure 10] FIG. 10 is a diagram showing an example of an electrolysis efficiency map showing the relationship between the electrolysis efficiency of the electrolysis device and control parameters. [Figure 11] FIG. 10 is a diagram showing an example of an electrolysis efficiency map showing the relationship between the electrolysis efficiency of the electrolysis device and control parameters. [Figure 12] FIG. 10 is a diagram showing an example of a power consumption fluctuation characteristic map showing the relationship between the power consumption fluctuation characteristic of the electrolysis device and control parameters. [Figure 13] FIG. 10 is a diagram showing an example of a power consumption fluctuation characteristic map showing the relationship between the power consumption fluctuation characteristic of the electrolysis device and control parameters. [Figure 14] FIG. 10 is a diagram showing an example of a maximum hydrogen production amount map showing the relationship between the maximum hydrogen production amount of the electrolysis device and control parameters. [Figure 15] FIG. 10 is a diagram showing an example of a maximum hydrogen production amount map showing the relationship between the maximum hydrogen production amount of the electrolysis device and control parameters. [Figure 16] FIG. 10 is a diagram showing an example of a hydrogen production amount variable range map showing the relationship between the hydrogen production amount variable range of the electrolysis device and control parameters. [Figure 17] FIG. 10 is a diagram showing an example of a hydrogen production amount variable range map showing the relationship between the hydrogen production amount variable range of the electrolysis device and control parameters. [Figure 18] 10 is a flowchart showing an example of an electrolytic device reuse operation process at the start of operation of the electrolytic device. [Figure 19] 10 is a flowchart showing an example of an electrolytic device reuse operation process during operation of the electrolytic device. [Figure 20] 10 is a flowchart showing an example of an electrolytic device reuse operation process at the start of reuse of the electrolytic device. [Figure 21] 10 is a flowchart illustrating an example of a control trigger generation process performed by a control trigger generation unit. [Figure 22] 10 is a flowchart illustrating an example of a performance value calculation process performed by a performance value calculation unit for health degree; [Figure 23] 10 is a flowchart illustrating an example of a target value change amount calculation process performed by a target value change amount calculation unit. [Figure 24] 10 is a flowchart illustrating an example of a control parameter calculation process performed by a control parameter calculation unit. DETAILED DESCRIPTION OF THE INVENTION

[0012] An embodiment of the present invention will now be described. As shown in Fig. 1, the electrolytic device operation system of this embodiment includes an electrolytic device 100, an electrolytic device management system 200, an electrolytic device database 300, and a target value resetting recommendation unit 400. Although Fig. 1 illustrates the electrolytic device 100 and the electrolytic device management system 200 as different configurations, they can be regarded as a single device.

[0013] System users who use the electrolysis equipment operation system include electrolysis equipment manufacturers 500 and electrolysis equipment users 600 .

[0014] The electrolysis equipment manufacturer 500 is a person, organization, or external system that manufactures and sells the electrolysis equipment 100 and the electrolysis equipment management system 200, and also reuses used electrolysis equipment 100. Reuse of the electrolysis equipment 100 includes reuse and recycling. In reuse, reusable electrolysis cells 110a and electrolysis stacks 110b are removed from used electrolysis equipment 100 and regenerated as new electrolysis equipment 100. In recycling, non-reusable but recyclable raw materials are recovered from used electrolysis equipment 100 and reused as raw materials.

[0015] The electrolysis device user 600 is a person, organization, or external system that produces hydrogen using the electrolysis device 100. The electrolysis device user 600 sells or uses the hydrogen produced by the electrolysis device 100, or sells or uses a substance produced by reacting hydrogen with another substance.

[0016] As shown in FIG. 1, the electrolytic equipment operation system of this embodiment includes input units 501 to 504 used by an electrolytic equipment manufacturer 500 and input units 601 and 602 used by an electrolytic equipment user 600.

[0017] The input unit used by the electrolytic equipment manufacturer 500 includes an electrolytic equipment initial information input unit 501, a health distribution target value input unit 502, an operation start instruction input unit 503, and a reuse execution instruction input unit 504. The input unit used by the electrolytic equipment user 600 includes a health target value input unit 601 and a characteristic priority input unit 602.

[0018] The health distribution target value input unit 502 is used by the electrolysis equipment manufacturer 500 to set and input the health distribution target value. The health distribution target value input to the health distribution target value input unit 502 is sent to the electrolysis equipment management system 200 and the electrolysis equipment database 300. The health distribution target value will be described later.

[0019] The electrolytic device initial information input unit 501 is used by the electrolytic device manufacturer 500 to input electrolytic device initial information. The electrolytic device initial information input to the electrolytic device initial information input unit 501 is sent to the electrolytic device database 300. The electrolytic device initial information is initial electrolytic device-related information before the electrolytic device 100 starts operation. The electrolytic device-related information will be described later.

[0020] The electrolysis device initial information is information related to the electrolysis device before hydrogen production by the electrolysis device 100 is started, and includes the health of the electrolysis device 100, the electrolytic cell 110a, and the electrolysis stack 110b, the cumulative hydrogen production amount, the cumulative operating time, maintenance information, the serial number, etc. The electrolysis device initial information of an unused electrolysis device 100 is information related to the electrolysis device 100, the electrolytic cell 110a, and the electrolysis stack 110b after they have been manufactured by the electrolysis device manufacturer 500 and before they are put into use. The electrolysis device initial information when the electrolysis device 100 has been subjected to a reuse treatment (regeneration treatment) is information related to the electrolysis device 100, the electrolytic cell 110a, and the electrolysis stack 110b after the reuse treatment and before hydrogen production is started.

[0021] The operation start instruction input unit 503 is used by the electrolytic equipment manufacturer 500 to input an operation start instruction. The operation start instruction input to the operation start instruction input unit 503 is sent to the electrolytic equipment management system 200 and the electrolytic equipment database 300.

[0022] The operation start instruction is an instruction to start operation of the electrolysis device 100, including after the reuse process, and the operation start instruction triggers the start of a series of electrolysis device reuse operation processes, including health management of the electrolysis device 100 by the electrolysis device management system 200. The electrolysis device reuse operation processes include processing for setting a target health value for the electrolysis device 100, processing for setting target health distribution values ​​for the electrolysis cell 110a and the electrolysis stack 110b, processing for controlling the electrolysis device 100, the electrolysis cell 110a, and the electrolysis stack 110b based on control parameters, and processing for reuse of the electrolysis device 100, the electrolysis cell 110a, and the electrolysis stack 110b.

[0023] The reuse execution instruction input unit 504 is used by the electrolysis equipment manufacturer 500 to input a reuse execution instruction for the electrolysis equipment 100. The reuse execution instruction input to the reuse execution instruction input unit 504 is sent to the electrolysis equipment database 300.

[0024] The target health value input unit 601 is used by the electrolysis device user 600 to set and input a target health value. The target health value input to the target health value input unit 601 is sent to the electrolysis device database 300 and the electrolysis device management system 200. The target health value will be described later.

[0025] The property priority input unit 602 is used by the electrolysis equipment user 600 to input the property priority of the electrolysis equipment 100. The property priority input to the property priority input unit 602 is sent to the electrolysis equipment database 300 and the electrolysis equipment management system 200. Property priority will be described later.

[0026] Next, the electrolysis device 100 will be described. The electrolysis device 100 is a hydrogen production device that electrolyzes water using power supplied from an external power source to produce hydrogen. The electrolysis devices 100 include unused devices that have not been used for hydrogen production after being manufactured by the electrolysis device manufacturer 500, and recycled devices (reclaimed devices) that have been reused by the electrolysis device manufacturer 500 from used electrolysis devices 100 that have been used for hydrogen production after being manufactured by the electrolysis device manufacturer 500. The electrolysis devices 100 that have finished hydrogen production by the electrolysis device user 600 can be recycled by the electrolysis device manufacturer 500 based on the electrolysis device-related information.

[0027] Any power source can be used as the external power source, for example, a power generation device that uses natural energy such as a solar cell, a commercial power supply, etc. When a commercial power supply is used as the external power source, the electrolysis device 100 can be used to absorb power fluctuations in the commercial power supply.

[0028] The electrolysis device user 600 may produce hydrogen using one electrolysis device 100, or may produce hydrogen using a hydrogen production plant including multiple electrolysis devices 100.

[0029] As shown in Fig. 2, the electrolysis device 100 includes an electrolysis unit 110 and an electrolysis auxiliary unit 120. The electrolysis unit 110 is composed of equipment that produces hydrogen and oxygen through a water electrolysis reaction.

[0030] The electrolysis unit 110 is provided with an electrolysis stack 110b in which multiple electrolysis cells 110a are stacked. The electrolysis unit 110 is provided with multiple electrolysis stacks 110b. Each electrolysis cell 110a has an electrolyte and a pair of electrodes arranged to sandwich the electrolyte. For example, a solid oxide electrolysis cell (SOEC) can be used as the electrolysis cell 110a. The SOEC generates hydrogen from water (water vapor) supplied to the negative electrode.

[0031] The electrolysis auxiliary unit 120 is a unit configured to include components of the electrolysis apparatus 100 other than the electrolysis unit 110. The electrolysis auxiliary unit 120 is provided with auxiliary devices 121-125 required to operate the electrolysis unit 110, including temperature adjustment units 121-124 for adjusting the temperatures of temperature adjustment targets, and a rectifier 125 for supplying the power, voltage, and current required to perform a water electrolysis reaction in the electrolysis unit 110.

[0032] The temperature adjustment units 121 to 124 include an electrolytic cell temperature adjustment unit 121 that adjusts the temperature of the electrolytic cell 110a, an electrolytic stack temperature adjustment unit 122 that adjusts the temperature of the electrolytic stack 110b, a water vapor temperature adjustment unit 123 that adjusts the temperature of water vapor supplied to the electrolysis unit 110, and an air temperature adjustment unit 124 that adjusts the temperature of air supplied to the electrolysis unit 110. The air temperature adjustment unit 124 is not necessarily required when an SOEC is used as the electrolytic cell, but is used when an electrolytic cell to which air is supplied is used.

[0033] The electrolysis auxiliary unit 120 includes an auxiliary control unit 126 that controls the auxiliary units 121 to 125. The auxiliary control unit 126 outputs control commands to the electrolytic cell temperature regulator 121, the electrolytic stack temperature regulator 122, the steam temperature regulator 123, the air temperature regulator 124, and the rectifier 125, and controls the operation of these auxiliary units 121 to 125.

[0034] The auxiliary control unit 126 controls the operation of the auxiliary units 121 to 125 based on control parameters set by the electrolysis device management system 200. The auxiliary control unit 126 functions as a control unit that controls hydrogen production by the electrolysis device 100, the electrolysis cell 110a, and the electrolysis stack 110b, which are the control targets.

[0035] The auxiliary control unit 126 can control the health, electrolysis efficiency, power consumption fluctuation characteristics, maximum hydrogen production rate, and variable range of the hydrogen production rate of the electrolysis device 100, the electrolytic cell 110a, and the electrolysis stack 110b, which are the control targets, based on the control parameters. The health, electrolysis efficiency, power consumption fluctuation characteristics, maximum hydrogen production rate, and variable range of the hydrogen production rate of the electrolysis device 100, the electrolytic cell 110a, and the electrolysis stack 110b represent the hydrogen production performance of the electrolysis device 100, the electrolytic cell 110a, and the electrolysis stack 110b.

[0036] The control parameters are used to control the electrolysis device 100, the electrolytic cell 110a, and the electrolytic stack 110b, which are the objects of control. The control parameters include at least one of the voltage, current, voltage change rate, current change rate, power change rate, temperature, and temperature change rate of each of the electrolysis device 100, the electrolytic cell 110a, and the electrolytic stack 110b as control items. For the multiple electrolytic cells 110a, control parameters can be set for each individual electrolytic cell 110a. For the multiple electrolytic stacks 110b, control parameters can be set for each individual electrolytic stack 110b.

[0037] The control items included in these control parameters are influential factors that affect the health, electrolysis efficiency, power consumption fluctuation characteristics, maximum hydrogen production amount, and variable range of the hydrogen production amount of the electrolysis device 100, electrolysis cell 110a, and electrolysis stack 110b. By using these influential factors as control parameters of the electrolysis device 100, it is possible to control the health of the electrolysis device 100, the health distribution of the electrolysis cell 110a, and the health distribution of the electrolysis stack 110b.

[0038] The electrolysis device management system 200 calculates the control parameters based on the health of the electrolysis device 100, the health distribution of the electrolysis cells 110a, the health distribution of the electrolysis stack 110b, and the characteristic priority of the electrolysis device 100. The health and health distribution include target values ​​and actual values. The electrolysis device management system 200 will be described in detail later.

[0039] Here, the health level of the electrolysis device 100, the health level distribution of the electrolysis cells 110a and the electrolysis stack 110b, and the characteristic priority of the electrolysis device 100 will be described.

[0040] The health of the electrolysis device 100 is the ratio of the electrolysis efficiency at that time to the electrolysis efficiency in the initial state. 3 ] is the amount of electricity required to produce hydrogen per unit volume, and the input electricity amount [kWh] is the amount of hydrogen produced [Nm 3 The health of the electrolysis device 100 can be said to be the performance of the electrolysis device 100 with respect to hydrogen production.

[0041] The health level of the electrolysis device 100 has an inverse relationship with the degradation level of the electrolysis device 100. As the health level of the electrolysis device 100 decreases, the degradation level of the electrolysis device 100 increases. The health level percentage is calculated by subtracting the degradation level percentage from 100%.

[0042] The health degree is also calculated for each of the multiple electrolytic cells 110a included in the electrolysis device 100. Because the electrolysis device 100 contains a large number of electrolytic cells 110a to be controlled, for ease of handling, the health degree distribution of the multiple electrolytic cells 110a included in the electrolysis device 100 is used instead of the health degree of each individual electrolytic cell 110a.

[0043] It is also calculated for each of the multiple electrolysis stacks 110b included in the electrolysis device 100. For the electrolysis stack 110b, the state-of-health distribution of the multiple electrolysis stacks 110b included in the electrolysis device 100 is used, as in the electrolysis cell 110a.

[0044] The health distribution of the electrolysis cells 110a represents the frequency (frequency) of the health levels of the individual electrolysis cells 110a as a distribution. The health distribution of the electrolysis stacks 110b represents the frequency (frequency) of the health levels of the individual electrolysis stacks 110b as a distribution.

[0045] For the health distribution, percentile values ​​(10th percentile value, 25th percentile value, 50th percentile value, 75th percentile value, 90th percentile value, etc.) and interquartile range can be used. For example, the 10th percentile value is the health value located 10% from the minimum value when all health levels included in the health distribution are set to 100%. The interquartile range is the difference between the health value located 25% from the minimum value and the health value located 75% when all health levels included in the health distribution are set to 100%, and is an index of the degree of dispersion of the health distribution.

[0046] Note that instead of a health distribution, a health range having a predetermined width may be used for the multiple electrolytic cells 110a and the multiple electrolysis stacks 110b. The health range of the multiple electrolytic cells 110a is a range defined by the maximum and minimum health values ​​of the multiple electrolytic cells 110a. The health range of the multiple electrolysis stacks 110b is a range defined by the maximum and minimum health values ​​of the multiple electrolysis stacks 110b.

[0047] The electrolysis device 100 deteriorates and its health level declines as it produces hydrogen. The health level of the electrolysis device 100 declines as the cumulative hydrogen production amount of the electrolysis device 100 increases and as the cumulative operating time of the electrolysis device 100 elapses.

[0048] The degree of deterioration in the state of health of the electrolysis device 100 varies depending on the mode of use of the electrolysis device 100. For example, the greater the amount of hydrogen produced per unit time, the greater the degree of deterioration in the state of health of the electrolysis device 100 is likely to be, whereas the smaller the amount of hydrogen produced per unit time, the smaller the degree of deterioration in the state of health of the electrolysis device 100 is likely to be. Furthermore, the greater the amount of fluctuation in power consumption per unit time, the greater the degree of deterioration in the state of health of the electrolysis device 100 is likely to be, whereas the smaller the amount of fluctuation in power consumption per unit time, the smaller the degree of deterioration in the state of health of the electrolysis device 100 is likely to be.

[0049] The degree of deterioration in the state of health of each of the electrolysis cells 110a included in the electrolysis device 100 varies. Similarly, the degree of deterioration in the state of health of each of the electrolysis stacks 110b included in the electrolysis device 100 varies.

[0050] The electrolytic equipment operation system of this embodiment is capable of setting a target health level for the electrolytic equipment 100, a target health level distribution for the electrolytic cell 110a, and a target health level distribution for the electrolytic stack 110b. The target health level and target health level distribution are control target values ​​for the electrolytic equipment 100, the electrolytic cell 110a, and the electrolytic stack 110b, and the electrolytic equipment 100, the electrolytic cell 110a, and the electrolytic stack 110b are controlled so that the actual values ​​of the health level and health level distribution approach the target values. The electrolytic equipment operation system controls the electrolytic equipment 100, the electrolytic cell 110a, and the electrolytic stack 110b based on control parameters calculated based on the target health level and the target health level distribution.

[0051] When using a health level range for multiple electrolysis cells 110a and multiple electrolysis stacks 110b, a health level range target value may be set instead of a health level distribution target value. The electrolysis equipment manufacturer 500 may set the maximum and minimum values ​​of the health level range as the health level range target values.

[0052] Next, the setting of the target health value of the electrolysis device 100 by the electrolysis device user 600 will be described.

[0053] The purpose for which electrolysis device users 600 produce hydrogen using the electrolysis device 100 varies for each electrolysis device user 600, such as selling hydrogen as is, using hydrogen as is for their own use, reacting hydrogen with another substance and then selling it, or reacting hydrogen with another substance and then using it for their own use. On the other hand, if the electrolysis device users 600 cannot grasp the usable period or the amount of hydrogen that can be produced by the electrolysis device 100, they will be unable to formulate a business plan for utilizing the electrolysis device 100, and it will be difficult to proceed with the introduction of the electrolysis device 100.

[0054] For this reason, in this embodiment, the electrolysis device user 600 can set a desired target health value for the electrolysis device 100. The electrolysis device user 600 can set the target health value according to the cumulative hydrogen production volume, and can set the target health value according to the cumulative operation time. The health of the electrolysis device 100 decreases as hydrogen is produced. For this reason, the target health value is set as the degree of decrease in health corresponding to an increase in the cumulative hydrogen production volume, and the target health value is set as the degree of decrease in health corresponding to the passage of cumulative operation time.

[0055] The electrolysis device user 600 can arbitrarily set the target health value of the electrolysis device 100 according to the operation mode of each electrolysis device user 600. The electrolysis device user 600 can input a desired target health value using a target health value input unit 601. The target health value input to the target health value input unit 601 is sent to the electrolysis device management system 200 and the electrolysis device database 300.

[0056] The electrolysis device 100 is controlled based on the target health value. The electrolysis device 100 is controlled so that the health value at the time when the cumulative hydrogen production amount reaches a predetermined amount or when the cumulative operating time reaches a predetermined time becomes equal to the target health value. This enables the electrolysis device user 600 to grasp the amount of hydrogen that can be produced by the electrolysis device 100 and the usable period.

[0057] Fig. 3 shows an example of setting a target health value by an electrolysis device user 600. The upper part of Fig. 3 shows an example of setting a target health value according to the cumulative hydrogen production amount. The lower part of Fig. 3 shows an example of setting a target health value according to the cumulative operation time.

[0058] The target value of the state of health indicated by the solid line in the upper part of Figure 3 is an example set so that the rate of decline in the state of health remains constant as the cumulative hydrogen production volume increases. The target value of the state of health indicated by the dashed-dotted line in the upper part of Figure 3 is an example set so that the rate of decline in the state of health changes along the way as the cumulative hydrogen production volume increases, with the rate of decline in the state of health decreasing gradually until the cumulative hydrogen production volume reaches a predetermined amount, and then the rate of decline in the state of health increasing.

[0059] The target health level indicated by the solid line in the lower part of Fig. 3 is an example set so that the rate of decline in health level remains constant as the cumulative operating time increases. The target health level indicated by the dashed-dotted line in the lower part of Fig. 3 is an example set so that the rate of decline in health level changes as the cumulative operating time increases, and is set so that the rate of decline in health level is large until the cumulative operating time reaches a predetermined time, and then the rate of decline in health level becomes gradual.

[0060] Next, the setting of the target values ​​of the health distribution of the electrolysis cell 110a and the electrolysis stack 110b by the electrolysis device manufacturer 500 will be described.

[0061] If the electrolysis equipment manufacturer 500 cannot grasp the timing and amount of reusable electrolysis equipment 100, electrolysis cells 110a, and electrolysis stacks 110b that will be generated, it will be difficult to formulate a business plan for reusing the electrolysis equipment 100, and it will be difficult to proceed with the reuse.

[0062] For this reason, in this embodiment, the electrolysis equipment manufacturer 500 can set the desired target health distribution values ​​for the electrolysis cells 110a and the electrolysis stack 110b. The electrolysis equipment manufacturer 500 can set the target health distribution values ​​according to the cumulative hydrogen production amount and the cumulative operating time.

[0063] The electrolytic equipment manufacturer 500 can input a desired target value of the health distribution using the target value input unit for health distribution 502. The target value of the health distribution input unit 502 is sent to the electrolytic equipment management system 200 and the electrolytic equipment database 300. When a target value of the health distribution range is used instead of the target value of the health distribution, the target value input unit for health distribution 502 functions as a target value input unit for the health range.

[0064] The electrolysis device cells 110a and the electrolysis stack 110b are controlled based on the target health distribution values. The electrolysis device cells 110a and the electrolysis stack 110b are controlled so that the health distributions at the time when the cumulative hydrogen production amount reaches a predetermined amount or when the cumulative operating time reaches a predetermined time are equal to the target health distribution values. This enables the electrolysis device manufacturer 500 to grasp the generation timing and generation amount of reusable electrolysis devices 100, electrolysis cells 110a, and electrolysis stacks 110b.

[0065] Fig. 4 shows an example of the target health distribution values ​​set by the electrolysis device manufacturer 500. The upper part of Fig. 4 shows an example of the target health distribution values ​​set according to the cumulative hydrogen production volume, and the lower part of Fig. 4 shows an example of the target health distribution values ​​set according to the cumulative operating time. Fig. 4 shows the target health distribution values ​​of the multiple electrolysis cells 110a included in the electrolysis device 100.

[0066] As shown in the upper part of Fig. 4, the target value of the health distribution according to the cumulative hydrogen production amount can be set in stages for each predetermined cumulative hydrogen production amount. In the example shown in the upper part of Fig. 4, when the cumulative hydrogen production amount is 0 to a [Nm 3 ] health distribution target value, cumulative hydrogen production volume a+1~b[Nm 3 ] health distribution target value, cumulative hydrogen production volume b+1~c[Nm 3 ] is set as the target value for the health distribution.

[0067] As shown in the lower part of Fig. 4, the target health distribution values ​​according to the cumulative operation time can be set in stages for each cumulative operation time of a predetermined length. In the example shown in the upper part of Fig. 4, the target health distribution values ​​for cumulative operation times of 0 to A [h], A+1 to B [h], and B+1 to C [h] are set.

[0068] The target health distribution values ​​shown in Fig. 4 show that the range of health levels becomes wider and the variance in health levels increases as the cumulative hydrogen production volume increases or the cumulative operating time elapses. Furthermore, the target health distribution values ​​shown in Fig. 4 show that the range of high health levels becomes wider and the range of low health levels becomes narrower as the cumulative hydrogen production volume increases or the cumulative operating time elapses. This is because, in the control of the electrolytic cell 110a, the control parameters for the electrolytic cell 110a with a high health level and the control parameters for the electrolytic cell 110a with a low health level are changed.

[0069] Next, the setting of the characteristic priority of the electrolysis device 100 by the electrolysis device user 600 will be described.

[0070] In this embodiment, the electrolysis device user 600 can set priorities for multiple characteristics of the electrolysis device 100 when using the electrolysis device 100. The multiple characteristics of the electrolysis device 100 include electrolysis efficiency [kWh / Nm 3 ], maximum hydrogen production [Nm 3 / h], power consumption fluctuation characteristics [kW / s], and hydrogen production amount variable range [%]. Each of the multiple characteristics of the electrolysis device 100 can be said to be a performance related to hydrogen production by the electrolysis device 100.

[0071] The characteristic priority of the electrolytic equipment 100 can be set, for example, as a percentage of each characteristic relative to the whole, so that the sum of the priorities of each characteristic is 100%. The electrolytic equipment user 600 can input the desired characteristic priority into the characteristic priority input unit 602. The characteristic priority input into the characteristic priority input unit 602 is sent to the electrolytic equipment management system 200 and the electrolytic equipment database 300.

[0072] Fig. 5 shows an example of setting the characteristic priority of the electrolysis device 100. In the example shown in Fig. 5, the priorities of the electrolysis efficiency and the maximum hydrogen production amount are set higher than the priorities of the power consumption fluctuation characteristics and the variable range of the hydrogen production amount. In the example shown in Fig. 5, the priorities of the electrolysis efficiency and the maximum hydrogen production amount are each set to 40%, and the priorities of the power consumption fluctuation characteristics and the variable range of the hydrogen production amount are each set to 10%.

[0073] The electrolysis device user 600 can set priorities for each characteristic of the electrolysis device 100 depending on the purpose for which the electrolysis device 100 is used.

[0074] For example, when the electrolysis device user 600 uses the electrolysis device 100 mainly for the purpose of hydrogen production, it is conceivable to set high priorities for the electrolysis efficiency and the maximum hydrogen production amount. In this case, for example, the priority of the electrolysis efficiency can be set to 20%, the priority of the maximum hydrogen production amount to 80%, and the priorities of the power consumption fluctuation characteristics and the variable range of the hydrogen production amount to 0%, respectively.

[0075] Alternatively, if the electrolysis device user 600 primarily aims to absorb power fluctuations in the commercial power grid using the electrolysis device 100, it may be possible to assign high priorities to the power consumption fluctuation characteristics and the variable range of the hydrogen production amount. In this case, for example, the priorities of the electrolysis efficiency and the maximum hydrogen production amount can be set to 0%, the power consumption fluctuation characteristics to 80%, and the variable range of the hydrogen production amount to 20%.

[0076] The electrolysis device 100 is controlled based on the characteristic priority set by the electrolysis device user 600. This allows hydrogen production by the electrolysis device 100 to be performed taking into account the characteristics of the electrolysis device 100 other than the target state of health value.

[0077] The electrolysis equipment user 600 does not necessarily have to set the property priorities of the electrolysis equipment 100. In cases where the electrolysis equipment user 600 does not request property priorities or is unable to set property priorities, the initial values ​​of the priorities of multiple properties can be set to an equal ratio. Alternatively, the electrolysis equipment manufacturer 500 may set the initial values ​​of the property priorities of the electrolysis equipment 100 based on a plan for reusing the electrolysis equipment 100, etc.

[0078] Returning to Fig. 1 , the electrolysis device database 300 will be described. The electrolysis device database 300 is a database for recording electrolysis device-related information related to the electrolysis device 100. The electrolysis device-related information includes electrolysis device initial information before hydrogen production by the electrolysis device 100 starts, and electrolysis device operation information after hydrogen production by the electrolysis device 100 starts. The electrolysis device initial information is input by the electrolysis device manufacturer 500. The electrolysis device operation information is input from the electrolysis device 100 at predetermined intervals.

[0079] The electrolysis device-related information includes the target health value of the electrolysis device 100, the target health distribution value of the electrolysis cell 110a, the target health distribution value of the electrolysis stack 110b, and the characteristic priority setting value of the electrolysis device 100. The electrolysis device-related information further includes the amounts of power input to the electrolysis device 100, the electrolysis cell 110a, and the electrolysis stack 110b, the hydrogen production amounts of the electrolysis device 100, the electrolysis cell 110a, and the electrolysis stack 110b, the control parameters of the electrolysis device 100, the accumulated operating times of the electrolysis device 100, the electrolysis cell 110a, and the electrolysis stack 110b, the accumulated hydrogen production amounts of the electrolysis device 100, the electrolysis cell 110a, and the electrolysis stack 110b, maintenance information for the electrolysis device 100, the electrolysis cell 110a, and the electrolysis stack 110b, and the serial numbers of the electrolysis device 100, the electrolysis cell 110a, and the electrolysis stack 110b. The serial numbers of the electrolysis device 100, the electrolysis cell 110a, and the electrolysis stack 110b are identification information that identifies the electrolysis device 100, the electrolysis cell 110a, and the electrolysis stack 110b.

[0080] In the storage area of ​​the electrolysis device database 300, a dedicated folder is created for each serial number of the electrolysis device 100. Within the folder for the electrolysis device 100, multiple storage areas are created, such as "At installation," "First reuse," "Second reuse," etc. Electrolysis device-related information for electrolysis devices 100 with the same serial number is recorded in the multiple storage areas within the folder.

[0081] The "at time of introduction" memory area stores electrolytic device-related information at the time of initial operation after manufacture by the electrolytic device manufacturer 500. The "first reuse" memory area stores electrolytic device-related information when the electrolytic device 100 is reused for the first time by the electrolytic device manufacturer 500. The "second reuse" memory area stores electrolytic device-related information when the electrolytic device 100 is reused for the second time by the electrolytic device manufacturer 500.

[0082] The target value reset recommendation unit 400 is a calculation unit that provides a recommendation notification for resetting the health level target value of the electrolysis device 100 and the health level distribution target values ​​of the electrolysis cell 110a and the electrolysis stack 110b.

[0083] Next, the target value reset recommendation unit 400 will be described. The target value reset recommendation unit 400 calculates a recommended reset value for the health level target value when a difference occurs between the target health level value and the actual value for the electrolysis device 100, and calculates a recommended reset value for the health level distribution target value when a difference occurs between the target health level distribution value and the actual value for the electrolysis cell 110a and the electrolysis stack 110b. After calculating the recommended reset value, the target value reset recommendation unit 400 notifies the electrolysis device user 600 and the electrolysis device manufacturer 500 that it recommends resetting the target value.

[0084] In addition to calculating the recommended reset value, the target value reset recommendation unit 400 creates a prediction model that predicts the future health and health distribution based on the previous actual health values ​​and actual health distribution values, and notifies the electrolysis equipment user 600 and the electrolysis equipment manufacturer 500 of the predicted values ​​of the future health and health distribution calculated using the created prediction model together with the reset recommendation notification.

[0085] An approximation model, for example, can be used as a prediction model for the health level and health level distribution. Depending on the prediction error rate and error pattern, other models such as an ARIMA model, moving average model, MA model, exponential smoothing model, AR model, ARMA model, Winters model, and multiple regression model may also be used as the prediction model.

[0086] Next, the electrolysis device management system 200 will be described with reference to Figures 6 and 7. The electrolysis device management system 200 manages the health of the electrolysis device 100, the health distribution of the electrolysis cells 110a, and the health distribution of the electrolysis stack 110b.

[0087] 6, the electrolysis device management system 200 includes a control trigger generation unit 210, a health status result value calculation unit 220, and a control parameter calculation unit 230. The control trigger generation unit 210 generates a control trigger that triggers the control parameter calculation unit 230 to calculate control parameters. The health status result value calculation unit 220 calculates the health status and the result value of the health status distribution. The control parameter calculation unit 230 calculates the control parameters of the electrolysis device 100, the electrolytic cell 110a, and the electrolysis stack 110b.

[0088] The control trigger generation unit 210 receives electrolysis device operation information from the electrolysis device 100. The electrolysis device operation information is information related to the electrolysis device 100 during hydrogen production. The electrolysis device operation information includes the amount of hydrogen produced by the electrolysis device 100, the electrolytic cell 110a, and the electrolysis stack 110b after the start of operation, the amount of power input after the start of operation, and the serial number. The electrolysis device 100 periodically outputs the electrolysis device operation information after the start of operation.

[0089] The control trigger generation unit 210 receives an operation start instruction from the electrolysis equipment manufacturer 500 via an operation start instruction input unit 503 and a health distribution target value from the electrolysis equipment manufacturer 500 via a health distribution target value input unit 502 .

[0090] The control trigger generation unit 210 receives as input a health target value set by the electrolysis equipment user 600 from a health target value input unit 601, and receives as input a characteristic priority setting value set by the electrolysis equipment user 600 from a characteristic priority input unit 602. The control trigger generation unit 210 receives as input a reset recommendation notice from the target value reset recommendation unit 400.

[0091] The control trigger generation unit 210 sends a control trigger to the control parameter calculation unit 230, thereby instructing the control parameter calculation unit 230 to execute a control parameter calculation process.

[0092] The control parameters are calculated by the control parameter calculation unit 230 when the electrolysis device 100 starts operating, and thereafter at preset control intervals. The control interval can be the interval at which the cumulative hydrogen production amount reaches a predetermined amount or the interval at which the cumulative operation time reaches a predetermined time. The hydrogen production amount that defines the control interval is defined as the control interval hydrogen production amount, and the operation time that defines the control interval is defined as the control interval operation time.

[0093] The control parameter calculation unit 230 also calculates the control parameters when any one of the target health value, the target health distribution value, and the characteristic priority is newly set. Furthermore, the control parameter calculation unit 230 also calculates the control parameters when the target value reset recommendation unit 400 issues a reset recommendation notice.

[0094] Therefore, the condition under which the control trigger generating unit 210 generates a control trigger is: (1) When an input of an operation start instruction from the electrolysis equipment manufacturer 500 is detected, (2) When detecting an input of a new target state of health value by the electrolysis device user 600, (3) When detecting an input of a new health distribution target value by the electrolysis device manufacturer 500, (4) When detecting a new input of a characteristic priority by the electrolysis device user 600, (5) When detecting a notification of recommendation to reset the health level target value by the target value reset recommendation unit 400, (6) When detecting a notification of recommendation to reset the health distribution target value by the target value reset recommendation unit 400, (7) When the cumulative hydrogen production amount of the electrolysis device 100 reaches the control interval hydrogen production amount, (8) The cumulative operation time of the electrolysis device 100 reaches the control interval operation time.

[0095] The health status result value calculation unit 220 is a unit for calculating the health status result value of the electrolysis device 100, the health status distribution result value of the electrolysis cell 110a included in the electrolysis device 100, and the health status distribution result value of the electrolysis stack 110b. Electrolysis device operation information is input to the health status result value calculation unit 220 from the electrolysis device 100.

[0096] The state of health result value calculation unit 220 calculates the electrolysis efficiency of the electrolysis device 100 using the input power amount and hydrogen production amount included in the electrolysis device operation information. The electrolysis efficiency can be calculated as follows: Electrolysis efficiency = input power amount / hydrogen production amount. The state of health result value calculation unit 220 then calculates the state of health result value of the electrolysis device 100 using the electrolysis efficiency at the time of calculation of the result value and the electrolysis efficiency at the start of operation. The state of health result value can be calculated as follows: state of health result value = (electrolysis efficiency at the start of operation / electrolysis efficiency at the time of calculation of the result value) × 100. The electrolysis efficiency at the start of operation can also be referred to as the electrolysis efficiency at the start of hydrogen production.

[0097] Similarly, the actual health value calculation unit 220 calculates the actual health values ​​of each electrolysis cell 110 a and each electrolysis stack 110 b, calculates the actual health distribution value of the multiple electrolysis cells 110 a from the actual health value of the electrolysis cell 110 a, and calculates the actual health distribution value of the multiple electrolysis stacks 110 b from the actual health value of the electrolysis stack 110 b.

[0098] The state of health result value calculation unit 220 sends the calculated state of health result value and state of health distribution result value to the control parameter calculation unit 230 and the electrolysis device database 300.

[0099] When the control parameter calculation unit 230 detects a control trigger from the control trigger generation unit 210 , it calculates the control parameters of the electrolysis device 100 and sends the control parameters to the auxiliary device control unit 126 of the electrolysis device 100 .

[0100] The control parameter calculation unit 230 receives a control trigger from the control trigger generation unit 210, and receives the actual health value and the actual health distribution value from the actual health value calculation unit 220. The control parameter calculation unit 230 receives the target health distribution value from the target health distribution value input unit 502, the target health value from the target health value input unit 601, the characteristic priority setting from the characteristic priority input unit 602, and a reset recommendation notification from the target value reset recommendation unit 400.

[0101] 7, the control parameter calculation unit 230 includes a target value change amount calculation section 231, a control parameter calculation section 232, and an influence factor database 233. The influence factor database 233 stores influence factor maps 233a to 233e. The influence factor maps 233a to 233e indicate the influence of control items of the control parameters on the amount of deterioration in the health of the electrolysis device 100, etc. The influence factor maps 233a to 233e will be described later.

[0102] When detecting a control trigger from the control trigger generation unit 210, the target value change calculation unit 231 calculates the target value change amounts required to improve the health of the electrolysis device 100, the electrolytic cell 110a, and the electrolysis stack 110b. The target value change amounts are used when the control parameter calculation unit 232 calculates the control parameters.

[0103] The target value change amount calculation unit 231 receives a control trigger from the control trigger generation unit 210, a target health value from the health target value input unit 601, a target health value from the health distribution target value input unit 502, and an actual health value and an actual health distribution value from the actual health value calculation unit 220.

[0104] The target value change calculation unit 231 calculates a target value change in the target value of the health of the electrolysis device 100 based on the target value and actual value of the health of the electrolysis device 100. The target value change calculation unit 231 calculates a target value change in the target value of the health distribution of the electrolysis cell 110a based on the target value and actual value of the health distribution of the electrolysis cell 110a. The target value change calculation unit 231 calculates a target value change in the target value of the health distribution of the electrolysis stack 110b based on the target value and actual value of the health distribution of the electrolysis stack 110b.

[0105] The target value change amount is used to bring the target value of the health of the electrolysis device 100 closer to the actual value, and is used to bring the actual value of the health distribution of the electrolytic cell 110a and the electrolytic stack 110b closer to the target value. When the actual value is lower than the target value of the health or the health distribution, the target value change amount can be calculated as the difference between the target value and the actual value. The target value change amount calculated by the target value change amount calculation unit 231 is used to calculate the control parameters in the control parameter calculation unit 232.

[0106] The control parameter calculation unit 232 calculates the control parameters of the electrolysis device 100, the electrolytic cell 110a, and the electrolytic stack 110b, and creates data for updating the predicted change values ​​of the influence factor maps 233a to 233e stored in the influence factor database 233.

[0107] The control parameter calculation unit 232 receives a control trigger from the control trigger generation unit 210, a target value change amount from the target value change amount calculation unit 231, and a characteristic priority setting value from the characteristic priority input unit 602. The control parameter calculation unit 232 reads out influence factor maps 233a to 233e stored in the influence factor database 233, and can use the influence factor maps 233a to 233e as information on influence factors that affect the control parameters. The influence factor maps 233a to 233e associate the control parameters with predicted values ​​of change in performance degradation related to hydrogen production by the electrolysis device 100.

[0108] Upon detection of a control trigger, the control parameter calculation unit 232 calculates control parameters for the electrolysis device 100, the electrolytic cell 110a, and the electrolytic stack 110b based on the target value change amount, the characteristic priority setting value, and the influencing factor maps 233a to 233e.

[0109] The control parameter calculation unit 232 calculates the voltage [V], current [A], voltage change rate [V / s], current change rate [A / s], power change rate [W / s], temperature [°C], and temperature change rate [°C / s] as control parameters for the electrolysis device 100, the electrolytic cell 110a, and the electrolysis stack 110b. The control parameter calculation unit 232 calculates upper and lower limit values ​​for each control item, namely, voltage, current, voltage change rate, current change rate, power change rate, temperature, and temperature change rate. The electrolysis device user 600 can adjust the control parameters between the upper and lower limit values ​​depending on the desired amount of hydrogen production, etc., thereby preventing a decrease in ease of use of the electrolysis device 100 for the electrolysis device user 600.

[0110] The control parameter calculation unit 232 has a function of updating the influence factor maps 233a to 233e. When the actual change values ​​of the health, electrolysis efficiency, power consumption variation characteristics, maximum hydrogen production amount, and variable range of the hydrogen production amount of the electrolysis device 100, the electrolytic cell 110a, and the electrolysis stack 110b after changing the control parameters differ from the predicted change values ​​of the influence factor maps 233a to 233e, the control parameter calculation unit 232 corrects the predicted change values ​​of the influence factor maps 233a to 233e based on the actual change values. When reflecting the actual change values ​​of the health, etc. in the influence factor maps 233a to 233e, it is preferable to create a prediction model using changes in the actual values ​​of the health, etc. up to now, rather than making only changes to the current use point.

[0111] An approximation model, for example, can be used as the forecast model. Depending on the forecast error rate and error pattern, other models such as an ARIMA model, a moving average model, an MA model, an exponential smoothing model, an AR model, an ARMA model, a Winters model, or a multiple regression model may also be used as the forecast model.

[0112] The influence factor maps 233a to 233e in the influence factor database 233 include a health map 233a, an electrolysis efficiency map 233b, a power consumption fluctuation characteristics map 233c, a maximum hydrogen production amount map 233d, and a hydrogen production amount variable range map 233e, which are shown in Figures 8 to 17. The influence factor maps 233a to 233e are used to calculate the control parameters by the control parameter calculation unit 232. The influence factor maps 233a to 233e are prepared for the electrolysis device 100, each electrolytic cell 110a, and each electrolysis stack 110b.

[0113] The influencing factor maps 233a to 233e show the influence of control parameters (voltage, current, voltage change rate, current change rate, power change rate, temperature, temperature change rate) on performance degradation related to hydrogen production of the electrolysis device 100, such as deterioration of the state of health. The influencing factor maps 233a to 233e show predicted changes in performance degradation related to hydrogen production of the electrolysis device 100 when the electrolysis device 100 is used with specific control parameters. In the influencing factor maps 233a to 233e, the use points of the control parameters are identified by positions on the maps. The use points of the control parameters are values ​​of the control parameters calculated by the control parameter calculation unit 232, and have a range defined by upper and lower limit values.

[0114] The influencing factor maps 233a to 233e can be created in advance by the electrolysis device manufacturer 500 before starting operation of the electrolysis device 100. If the predicted value of change in the health state deterioration or the like set in the influencing factor maps 233a to 233e differs from the actual value of change in the health state deterioration or the like, the maps can be updated using the prediction model created by the control parameter calculation unit 232.

[0115] 8 and 9 show examples of the health map 233a. The health map 233a shows the influence of target items of control parameters on the amount of health deterioration. The health map 233a includes a first health map showing the relationship between voltage and the amount of health deterioration, a second health map showing the relationship between current and the amount of health deterioration, a third health map showing the relationship between a voltage change rate and the amount of health deterioration, a fourth health map showing the relationship between a current change rate and the amount of health deterioration, a fifth health map showing the relationship between a power change rate and the amount of health deterioration, a sixth health map showing the relationship between a temperature usage range and the amount of health deterioration, and a seventh health map showing the relationship between a temperature change rate and the amount of health deterioration.

[0116] In the first health map, the usage point is determined by the voltage center value and the voltage usage range, and the amount of health deterioration changes according to the voltage center value and the voltage usage range. When changing the usage point, the voltage center value and the voltage usage range may be changed, or only the voltage center value may be changed, or only the voltage usage range may be changed. For example, if the voltage center value is a [V] and the voltage usage range is X [V], the voltage can be changed within the range of a ± X [V]. In other words, the lower limit of the voltage is aX [V], and the upper limit of the voltage is a + X [V].

[0117] In the second health map, the usage point is determined by the central current value and the current usage range, and the amount of health deterioration changes according to the central current value and the current usage range. When changing the usage point, the central current value and the current usage range may be changed, or only the central current value may be changed, or only the current usage range may be changed. For example, if the central current value is a [A] and the current usage range is X [A], the current can be changed within the range of a ± X [A]. In other words, the lower limit of the current is aX [A], and the upper limit of the current is a + X [A].

[0118] In the third health map, the use point is determined by the change start voltage and voltage change rate, and the health deterioration amount changes according to the change start voltage and voltage change rate. When changing the use point, the change start voltage and voltage change rate may be changed, or only the change start voltage may be changed, or only the voltage change rate may be changed. For example, if the change start voltage is a [V] and the voltage change rate is X [V / s], the voltage that can change in t seconds is within the range of a ± X × t [V]. In other words, the lower limit of the voltage change rate is aX [V / s], and the upper limit of the voltage change rate is a + X [V / s].

[0119] In the fourth health map, the use point is determined by the change start current and the current change rate, and the health deterioration amount changes according to the change start current and the current change rate. When changing the use point, the change start current and the current change rate may be changed, or only the change start current may be changed, or only the current change rate may be changed. For example, if the change start current is a [V] and the current change rate is X [A / s], the current that can change in t seconds is within the range of a ± X × t [A]. In other words, the lower limit of the current change rate is aX [A / s], and the upper limit of the current change rate is a + X [A / s].

[0120] In the fifth health map, the usage point is determined by the change start power and power change rate, and the health deterioration amount changes according to the change start power and power change rate. When changing the usage point, the change start power and power change rate may be changed, or only the change start power may be changed, or only the power change rate may be changed. For example, if the change start power is a [W] and the power change rate is X [W / s], the power that can be changed in t seconds is within the range of a ± X × t [W]. In other words, the lower limit of the power change rate is aX [W / s], and the upper limit of the power change rate is a + X [W / s].

[0121] In the sixth health map, the use point is determined by the center temperature value and the temperature use range, and the amount of health deterioration changes according to the center temperature value and the temperature use range. When changing the use point, the center temperature value and the temperature use range may be changed, or only the center temperature value may be changed, or only the temperature use range may be changed. For example, if the center temperature value is a [°C] and the temperature use range is X [°C], the temperature can be changed within the range of a ± X [°C]. In other words, the lower limit of the temperature is aX [°C], and the upper limit of the temperature is a + X [°C].

[0122] In the seventh health map, the use point is determined by the change start temperature and the temperature change rate, and the amount of health deterioration changes depending on the change start temperature and the temperature change rate. When changing the use point, the change start temperature and the temperature change rate may be changed, or only the change start temperature may be changed, or only the temperature change rate may be changed. For example, if the change start temperature is a [°C] and the temperature change rate is X [°C / s], the temperature that can change in t seconds is within the range of a ± X × t [°C]. In other words, the lower limit of the temperature change rate is aX [°C / s], and the upper limit of the temperature change rate is a + X [°C / s].

[0123] 10 and 11 show examples of the electrolysis efficiency map 233b. The electrolysis efficiency map 233b shows the influence of the target items of the control parameters on the electrolysis efficiency. The electrolysis efficiency map 233b includes a first electrolysis efficiency map showing the relationship between the voltage usage range and the electrolysis efficiency deterioration rate, a second electrolysis efficiency map showing the relationship between the current usage range and the electrolysis efficiency deterioration rate, a third electrolysis efficiency map showing the relationship between the voltage change rate and the electrolysis efficiency deterioration rate, a fourth electrolysis efficiency map showing the relationship between the current change rate and the electrolysis efficiency deterioration rate, a fifth electrolysis efficiency map showing the relationship between the power change rate and the electrolysis efficiency deterioration rate, a sixth electrolysis efficiency map showing the relationship between the temperature usage range and the electrolysis efficiency deterioration rate, and a seventh electrolysis efficiency map showing the relationship between the temperature change rate and the electrolysis efficiency deterioration rate. The relationship between the target items of the control parameters and the electrolysis efficiency deterioration rate in FIGS. 10 and 11 is the same as in FIGS. 8 and 9, and therefore will not be described again.

[0124] 12 and 13 show examples of the power consumption variation characteristic map 233c. The power consumption variation characteristic map 233c shows the influence of control parameter target items on the power consumption variation characteristic. The power consumption variation characteristic map 233c includes a first power consumption variation characteristic map showing the relationship between the voltage usage range and the power consumption variation characteristic deterioration rate, a second power consumption variation characteristic map showing the relationship between the current usage range and the power consumption variation characteristic deterioration rate, a third power consumption variation characteristic map showing the relationship between the voltage change rate and the power consumption variation characteristic deterioration rate, a fourth power consumption variation characteristic map showing the relationship between the current change rate and the power consumption variation characteristic deterioration rate, a fifth power consumption variation characteristic map showing the relationship between the power change rate and the power consumption variation characteristic deterioration rate, a sixth power consumption variation characteristic map showing the relationship between the temperature usage range and the power consumption variation characteristic deterioration rate, and a seventh power consumption variation characteristic map showing the relationship between the temperature change rate and the power consumption variation characteristic deterioration rate. The relationship between the control parameter target items and the power consumption variation characteristic deterioration rate in FIGS. 12 and 13 is similar to that in the health maps in FIGS. 8 and 9, and therefore will not be described here.

[0125] 14 and 15 show examples of the maximum hydrogen production rate map 233d. The maximum hydrogen production rate map 233d shows the influence of the target control parameter items on the maximum hydrogen production rate. The maximum hydrogen production rate map 233d includes a first maximum hydrogen production rate map showing the relationship between the voltage usage range and the maximum hydrogen production rate deterioration rate, a second maximum hydrogen production rate map showing the relationship between the current usage range and the maximum hydrogen production rate deterioration rate, a third maximum hydrogen production rate map showing the relationship between the voltage change rate and the maximum hydrogen production rate deterioration rate, a fourth maximum hydrogen production rate map showing the relationship between the current change rate and the maximum hydrogen production rate deterioration rate, a fifth maximum hydrogen production rate map showing the relationship between the power change rate and the maximum hydrogen production rate deterioration rate, a sixth maximum hydrogen production rate map showing the relationship between the temperature usage range and the maximum hydrogen production rate deterioration rate, and a seventh maximum hydrogen production rate map showing the relationship between the temperature change rate and the maximum hydrogen production rate deterioration rate. The relationships between the target control parameter items and the maximum hydrogen production rate deterioration rate in FIGS. 14 and 15 are similar to those in the health maps in FIGS. 8 and 9, and therefore will not be described here.

[0126] 16 and 17 show examples of the hydrogen production rate variable range map 233e. The hydrogen production rate variable range map 233e shows the influence of the target control parameter on the variable range of hydrogen production rate. The hydrogen production rate variable range map 233e includes a first hydrogen production rate variable range map showing the relationship between the voltage usage range and the rate of deterioration of the variable range of hydrogen production rate, a second hydrogen production rate variable range map showing the relationship between the current usage range and the rate of deterioration of the variable range of hydrogen production rate, a third hydrogen production rate variable range map showing the relationship between the voltage change rate and the rate of deterioration of the variable range of hydrogen production rate, a fourth hydrogen production rate variable range map showing the relationship between the current change rate and the rate of deterioration of the variable range of hydrogen production rate, a fifth hydrogen production rate variable range map showing the relationship between the power change rate and the rate of deterioration of the variable range of hydrogen production rate, a sixth hydrogen production rate variable range map showing the relationship between the temperature usage range and the rate of deterioration of the variable range of hydrogen production rate, and a seventh hydrogen production rate variable range map showing the relationship between the temperature change rate and the rate of deterioration of the variable range of hydrogen production rate. The relationship between the target items of the control parameters and the rate of deterioration of the variable range of the hydrogen production amount in FIGS. 16 and 17 is the same as that in the health maps in FIGS. 8 and 9, and therefore a description thereof will be omitted.

[0127] Next, an example of an electrolysis reuse process that realizes reuse of the electrolysis device 100 using the electrolysis device operation system of this embodiment is shown below. The electrolysis device reuse operation process is composed of processes at the start of operation of the electrolysis device 100 (S100 to S106), processes during operation of the electrolysis device 100 (S200 to S209), and processes when the electrolysis device 100 is reused (S300 to S310).

[0128] First, the electrolysis and reuse process at the start of operation of the electrolysis device 100 will be described with reference to the flowchart of FIG.

[0129] First, in S100, after manufacturing the electrolysis device 100, the electrolysis device manufacturer 500 inputs electrolysis device initial information related to the electrolysis device 100, the electrolysis cell 110a, and the electrolysis stack 110b to the electrolysis device initial information input unit 501. The electrolysis device initial information is sent from the electrolysis device initial information input unit 501 to the electrolysis device database 300, and is acquired by the electrolysis device database 300.

[0130] Next, in S101, the electrolysis equipment manufacturer 500 inputs the health distribution target values ​​determined for each of the electrolytic cell 110a and the electrolysis stack 110b based on a plan for reuse of the electrolytic cell 110a and the electrolysis stack 110b to the health distribution target value input unit 502. The health distribution target values ​​input to the health distribution target value input unit 502 are sent to the electrolysis equipment database 300.

[0131] Next, in S102, the electrolysis device user 600 inputs the target health value required for the electrolysis device 100 based on the usage plan of the electrolysis device 100, etc., into the target health value input unit 601. The target health value input into the target health value input unit 601 is sent to the electrolysis device database 300.

[0132] Next, in S103, the electrolysis equipment user 600 inputs the characteristic priorities desired for the four characteristics of the electrolysis equipment 100 into the characteristic priority input unit 602. The characteristic priorities input into the characteristic priority input unit 602 are sent to the electrolysis equipment database 300.

[0133] As described above, the four characteristics of the electrolysis device 100 are electrolysis efficiency, power consumption fluctuation characteristics, maximum hydrogen production amount, and variable range of hydrogen production amount, and the characteristic priorities may be set so that the total value for the four characteristics is 100%.

[0134] The initial values ​​of the characteristic priorities are set to an equal 25% for each of the four characteristics. When the electrolysis equipment user 600 does not request priorities for the four characteristics of the electrolysis equipment 100 or when the electrolysis equipment user 600 is unable to set priorities for the four characteristics of the electrolysis equipment 100, the initial values ​​of the characteristic priorities are used. The initial values ​​of the characteristic priorities may be changed as appropriate based on the reuse plan of the electrolysis equipment manufacturer 500, etc.

[0135] Next, in S104, processing is performed to wait for the electrolysis equipment manufacturer 500 to input an operation start instruction for the electrolysis equipment 100 into the operation start instruction input unit 503. This operation start instruction is not an instruction for the operating state of the electrolysis equipment 100, such as starting the operation of the electrolysis equipment 100 or starting 50% rated operation of the electrolysis equipment 100, but is an operation start instruction aimed at reusing the electrolysis equipment 100. The operation start instruction from the electrolysis equipment manufacturer 500 triggers the start of operation processing aimed at reusing the electrolysis equipment 100, such as health management.

[0136] If it is determined in the process of S104 that an operation start instruction from the electrolysis equipment manufacturer 500 has been detected, the electrolysis equipment database 300 performs the process of S105. In S105, the electrolysis equipment database 300 creates a folder for the serial number of the target electrolysis equipment 100, and records the information acquired in S100 to S104 and the date and time when the operation start instruction was received in the "time of installation" storage area.

[0137] Next, in S106, the electrolysis equipment management system 200 receives the target health distribution value from the target health distribution value input unit 502, receives an operation start instruction from the operation start instruction input unit 503, receives the target health value from the target health value input unit 601, and receives the characteristic priority of the electrolysis equipment 100 from the characteristic priority input unit 602.

[0138] Next, the electrolytic device reuse operation process during operation of the electrolytic device 100 will be described with reference to the flowchart of FIG.

[0139] In S200, the electrolysis device 100 transmits, at regular intervals, electrolysis device operation information, the actual health value of the electrolysis device 100, and the actual health distribution values ​​of the electrolytic cell 110a and the electrolysis stack 110b to the electrolysis device database 300. In this embodiment, the actual health value of the electrolysis device 100 and the actual health distribution values ​​of the electrolytic cell 110a and the electrolysis stack 110b are transmitted from the electrolysis device management system 200 to the electrolysis device database 300.

[0140] The electrolysis device operation information includes the amount of hydrogen produced by the electrolysis device 100, the electrolysis cell 110a, and the electrolysis stack 110b after the start of operation, the amount of power input after the start of operation, and serial numbers.

[0141] The electrolysis device database 300 records the electrolysis device operation information, the health status record value, and the health status distribution record value in the currently used area in the folder corresponding to the serial number of the electrolysis device 100 in question.

[0142] The transmission interval at which the electrolytic device 100 sends the electrolytic device operation information and the like to the electrolytic device database 300 can be set arbitrarily, and the initial value can be set to one week, for example. The transmission interval can be changed depending on the interval at which the electrolytic device manufacturer 500 and the electrolytic device user 600 desire to check the difference between the target value and the actual value, the interval at which they desire to change the target value based on the difference between the target value and the actual value, etc.

[0143] Next, in S201, the electrolysis device database 300 sends the health level target value, the actual value, and the health level distribution target value and the actual value to the target value resetting recommending unit 400.

[0144] Next, in S202, the target value reset recommendation unit 400 determines whether the health status result value is less than the sum of the target value and the recommended reset standard value range, or whether the health status distribution result value is less than the sum of the interquartile range of the target value and the recommended reset standard range. In the determination process of S202, if either of the conditions is met, the result is positive.

[0145] The recommended resetting reference range used in the determination process of S202 is a value set for each of the electrolysis device 100, the electrolytic cell 110a, and the electrolysis stack 110b. The recommended resetting reference range can be any positive, zero, or negative value, and the initial value can be zero, for example. The value of the recommended resetting reference range can be changed as appropriate depending on the management range of the actual measured value relative to the health level target value requested by the electrolysis device manufacturer 500 and the health level management performance of the electrolysis device 100, i.e., health level controllability.

[0146] If it is determined in the determination process of S202 that none of the conditions are met, the process returns to S200. On the other hand, if it is determined in the determination process of S202 that any of the conditions is met, S203 is executed.

[0147] In S203, the target value reset recommending unit 400 creates a prediction model based on the past actual health values ​​and actual health distribution values, and further calculates predicted values ​​of the future health and health distribution using the created prediction model. In this embodiment, the prediction model used is an ARIMA model that can also handle noise, trends, and cycles. Other prediction models such as a moving average model, MA model, exponential smoothing model, linear curve approximation model, AR model, ARMA model, Winters model, and multiple regression model may also be used depending on the prediction error rate and error pattern.

[0148] Next, in S204, the target value reset recommendation unit 400 sends a notification recommending resetting of the health distribution target values ​​of the electrolytic cell 110a and the electrolysis stack 110b to the electrolysis equipment manufacturer 500. When sending the notification in S204, the predicted value of the future health distribution calculated in S203 may also be added, thereby facilitating the setting of new target values ​​by the electrolysis equipment manufacturer 500.

[0149] Next, in S205, the target value reset recommendation unit 400 notifies the electrolysis device user 600 of a recommendation to reset the health level target value of the electrolysis device 100. When making the notification in S204, the predicted future health level calculated in S203 may also be added, thereby making it easier for the electrolysis device user 600 to set a new target value.

[0150] Next, in S206, the electrolysis equipment manufacturer 500 inputs new health distribution target values ​​determined for each of the electrolytic cell 110a and the electrolysis stack 110b to the health distribution target value input unit 502 based on the predicted health distribution values ​​acquired from the target value resetting recommendation unit 400. The information input to the health distribution target value input unit 502 is input to the electrolysis equipment database 300 and recorded in the currently used area in the folder for the serial number of the target electrolysis equipment 100.

[0151] Next, in S207, the electrolysis device user 600 inputs a new target health value to be sought for the electrolysis device 100 into a target health value input unit 601, based on the predicted value of health from the target value resetting recommendation unit 400. The information input into the target health value input unit 601 is input into the electrolysis device database 300, and recorded in the currently used area in the folder for the serial number of the electrolysis device 100 in question.

[0152] Next, in S208, the electrolysis equipment user 600 inputs new characteristic priorities desired for the four characteristics of the electrolysis equipment 100 into the characteristic priority input unit 602. The information input into the characteristic priority input unit 602 is entered into the electrolysis equipment database 300 and recorded in the currently used area in the folder for the serial number of the electrolysis equipment 100 in question.

[0153] Next, in S209, the electrolysis device management system 200 is notified of the target health value of the electrolysis device 100, the target health distribution values ​​of the electrolysis cell 110a and the electrolysis stack 110b, and the characteristic priority of the electrolysis device 100 from the respective input units 501, 601, 602.

[0154] When the electrolysis device user 600 receives a reset recommendation notification from the target value reset recommendation unit 400, it is not necessary to update both the health target value and the characteristic priority of the electrolysis device 100, and the electrolysis device user 600 can select to update only one of them, or not to update both. Examples of situations in which only the health target value or the characteristic priority or not to update both are assumed to be when the difference between the health target value and the actual value of the electrolysis device 100 is small, or when the amount of change in health expected from the future operating status of the electrolysis device 100 is small.

[0155] Similarly, the electrolysis equipment manufacturer 500 does not necessarily need to update the health distribution target values ​​of the electrolytic cell 110a and the electrolysis stack 110b when receiving a reset recommendation notice from the target value reset recommendation unit 400, and can choose not to update them. Examples of situations in which the health distribution target values ​​of the electrolysis equipment 100 should not be updated include when the difference between the health distribution target value and the actual value is small, or when the amount of change in the health distribution expected from future operating conditions is small.

[0156] Next, the electrolytic device reuse operation process at the start of reuse of the electrolytic device 100 will be described with reference to the flowchart of FIG.

[0157] First, in S300, a process of waiting for a reuse execution instruction to start the reuse of the electrolysis device 100 to be input from the electrolysis device manufacturer 500 to the reuse execution instruction input unit 504 is performed.

[0158] If it is determined in S300 that a reuse execution instruction from the electrolysis equipment manufacturer 500 has been detected, the electrolysis equipment manufacturer 500 performs processing in S301 to acquire information about the electrolysis equipment 100, the electrolytic cell 110a, and the electrolysis stack 110b from the electrolysis equipment database 300. The electrolysis equipment manufacturer 500 reads electrolysis equipment-related information from the currently used area in the folder for the serial number of the electrolysis equipment 100 in question, from the electrolysis equipment database 300.

[0159] Next, in S302, the electrolysis equipment manufacturer 500 executes a reuse process for the electrolysis cell 110a and the electrolysis stack 110b using the electrolysis equipment-related information acquired in S301. In the reuse process, the reusability of each of the electrolysis cell 110a and the electrolysis stack 110b is determined, and the objects are classified into three types: (1) objects that cannot be reused or recycled, (2) objects that cannot be reused but can be recycled, and (3) objects that can be reused or recycled.

[0160] (1), (2), and (3) can generally be classified based on the soundness performance value. For example, when A% < B%, if the soundness performance value is less than A%, it can be classified as (1); if the soundness performance value is greater than or equal to A% and less than B%, it can be classified as (2); and if the soundness performance value is greater than or equal to B%, it can be classified as (3).

[0161] The object classified as (1) is discarded, the object classified as (2) is recycled, and the object classified as (3) can be used as it is or reused by being taken out from the electrolysis device 100 and incorporated into another electrolysis device 100. Since it is also possible to select recycling for the object determined as (3), instead of determining the reuse process, the recycling process may be selected according to the supply and demand situation of reuse and recycling, etc., and according to profitability.

[0162] Next, in S303, when the electrolysis device manufacturer 500 takes out the electrolysis cell 110a, etc. from the electrolysis device 100 for disposal, recycling, or reuse in S302, it performs a reuse process of assembling it to function as the electrolysis device 100 by replacing it with reused or new products taken out from other electrolysis devices 100. When assembling the electrolysis device 100 using a plurality of electrolysis cells 110a, it is desirable to use a combination of electrolysis cells 110a with as uniform soundness as possible. Similarly, when assembling the electrolysis device 100 using a plurality of electrolysis stacks 110b, it is desirable to use a combination of electrolysis stacks 110b with as uniform soundness as possible.

[0163] The electrolysis device 100 assembled in S303 does not necessarily have to be the same scale as before the reuse process. The quantity of the electrolysis cell 110a and the electrolysis stack 110b can be selected according to the supply and demand situation of the electrolysis device 100 for each scale, the requirements of the electrolysis device user 600, etc., and the scale of the electrolysis device 100 to be assembled may be changed.

[0164] Next, in S304, the electrolysis equipment manufacturer 500 inputs the electrolysis equipment initial information for the electrolysis equipment 100 assembled in S303 into the electrolysis equipment initial information input unit 501. The information input into the electrolysis equipment initial information input unit 501 is sent to the electrolysis equipment database 300.

[0165] Next, in S305, the electrolysis equipment manufacturer 500 inputs the health distribution target values ​​for each of the electrolytic cell 110a and the electrolysis stack 110b for the electrolysis equipment 100 assembled in S303 to the health distribution target value input unit 502. The information input to the health distribution target value input unit 502 is sent to the electrolysis equipment database 300.

[0166] Next, in S306, the electrolysis device user 600 inputs the target health value for the electrolysis device 100 assembled in S303 into a target health value input unit 601. The information input into the target health value input unit 601 is sent to the electrolysis device database 300.

[0167] Next, in S307, the electrolysis equipment user 600 inputs the property priorities for the four properties of the electrolysis equipment 100 assembled in S303 into the property priority input unit 602. The information input into the property priority input unit 602 is sent to the electrolysis equipment database 300.

[0168] Next, in S308, a process of waiting for the electrolysis device manufacturer 500 to input an operation start instruction for the electrolysis device 100 into the operation start instruction input unit 503 is performed.

[0169] If the process of S308 detects an operation start instruction from the electrolysis equipment manufacturer 500, the electrolysis equipment database 300 performs the process of S309. In S309, the electrolysis equipment database 300 creates a folder for the serial number of the target electrolysis equipment 100, and records the information acquired in S304 to S307 and the date and time when the operation start instruction was received in a predetermined storage area.

[0170] In the process of S309, if the current storage area is "at the time of installation", the new storage area is set as "first reuse", and if the current storage area is "first reuse", the new storage area is set as "second reuse", and so on.

[0171] Next, in S310, the electrolytic equipment management system 200 receives the target health distribution value from the target health distribution value input unit 502, receives an operation start instruction from the operation start instruction input unit 503, receives the target health value from the target health value input unit 601, and receives the characteristic priority of the electrolytic equipment 100 from the characteristic priority input unit 602.

[0172] Next, the processes executed by the control trigger generation unit 210, the health status result value calculation unit 220, and the control parameter calculation unit 230 of the electrolysis device management system 200 will be described.

[0173] First, the control trigger generation process performed by the control trigger generation unit 210 will be described with reference to the flowchart of FIG.

[0174] In the control trigger generation process, in S400 it is determined whether an operation start instruction has been detected from the operation start instruction input unit 503, in S401 it is determined whether a new health target value has been detected from the health target value input unit 601, in S402 it is determined whether a new characteristic priority has been detected from the characteristic priority input unit 602, in S403 it is determined whether a new health distribution target value has been detected from the health distribution target value input unit 502, in S404 it is determined whether a notification recommending resetting of a new health target value has been detected from the target value reset recommendation unit 400, in S405 it is determined whether a notification recommending resetting of a new health distribution target value has been detected from the target value reset recommendation unit 400, in S406 it is determined whether the cumulative hydrogen production amount has reached the control interval hydrogen production amount, and in S407 it is determined whether the cumulative operating time has reached the control interval operating time.

[0175] The control interval hydrogen production amount is the hydrogen production amount for defining the control interval for executing control parameter calculation in the control parameter calculation unit 230. The control interval operating time is the operating time for defining the control interval for executing control parameter calculation in the control parameter calculation unit 230.

[0176] In S400, it is determined whether the electrolysis device 100 has started operation after manufacture, or whether the electrolysis device 100 assembled in the reuse process has started operation. If it is determined in the determination process of S400 that an operation start instruction has been detected, initial calculation of control parameters is required, and therefore initial values ​​for the control interval hydrogen production amount and the control interval operating time are set in S408.

[0177] The control interval hydrogen production amount and the control interval operating time can be set arbitrarily depending on the controllability of the health level. Since the electrolysis device 100 starts operation in S408, the control interval hydrogen production amount can be set to, for example, the case where operation is performed at the rated production capacity 24 hours a day for three months. In this case, the control interval hydrogen production amount [Nm 3 ] is the rated production capacity [Nm 3 / h] × 24 [h] × 90, so the control interval operating time [h] is 24 [h] × 90.

[0178] After the control interval hydrogen production amount and the control interval operating time are set in S408, the control trigger generation unit 210 outputs a control trigger to the control parameter calculation unit 230 in S409.

[0179] S401, S402, and S403 are cases where the electrolysis equipment manufacturer 500 or the electrolysis equipment user 600 changes the target values ​​or characteristic priorities, and the control parameters need to be updated to accommodate the changes in the target values ​​or characteristic priorities. Therefore, if the result of any of the determination processes in S401, S402, and S403 is positive, the control trigger generation unit 210 outputs a control trigger to the control parameter calculation unit 230 in S409.

[0180] S404 and S405 are executed when the difference between the target value set by the electrolysis equipment manufacturer 500 and the electrolysis equipment user 600 and the actual value becomes large, and the control parameters need to be updated. The determination processes in S404 and S405 return a positive result when the difference between the target value set by the electrolysis equipment manufacturer 500 and the electrolysis equipment user 600 and the actual value exceeds the allowable range. Therefore, the control interval hydrogen production amount and the control interval operating time are changed to shorten the control interval, thereby reducing the difference between the target value and the actual value.

[0181] The control interval shortening coefficient for shortening the control interval is a value less than 1 and can be set arbitrarily depending on the controllability of the health level. In this embodiment, the control interval shortening coefficient is set to "0.8", the hydrogen production amount at the control interval after the change = the hydrogen production amount at the control interval before the change × 0.8, and the operating time at the control interval after the change = the operating time at the control interval before the change × 0.8.

[0182] In steps S406 and S407, the cumulative hydrogen production amount or cumulative operating time reaches a preset control interval, and periodic update of the control parameters is required to satisfy the target health value. If the determination results in steps S406 and S407 are positive, the control trigger generation unit 210 outputs a control trigger to the control parameter calculation unit 230 in step S409.

[0183] Next, the performance value calculation process executed by the performance value calculation unit 220 will be described with reference to the flowchart of FIG.

[0184] First, in S420, the electrolysis efficiency of each of the electrolysis device 100, the electrolysis cell 110a, and the electrolysis stack 110b is calculated using the electrolysis device-related information acquired from the electrolysis device 100. The electrolysis efficiency is calculated by multiplying the amount of power input [kWh] to the electrolysis device 100, the electrolysis cell 110a, and the electrolysis stack 110b by the amount of hydrogen produced [Nm 3 ], and electrolysis efficiency [kWh / Nm 3 ] = input power [kWh] / hydrogen production [Nm 3 ] can be calculated.

[0185] The calculation of electrolysis efficiency in S420 basically uses information related to the electrolysis device under the same operating environmental conditions (e.g., main body temperature, ambient temperature, electrolysis temperature, gas and liquid temperatures, flow rates, flow velocities, etc.) when producing hydrogen at rated operation. In situations where the hydrogen production volume and operating environmental conditions are the same or when there is little electrolysis device information, values ​​for similar operating environmental conditions may be used, or differences in operating environmental conditions may be corrected for the electrolysis efficiency.

[0186] Next, in S421, the actual health values ​​of the electrolysis device 100, the electrolysis cell 110a, and the electrolysis stack 110b are calculated. The health values ​​are the ratios of the current electrolysis efficiency to the initial value of the electrolysis efficiency. The initial value of the electrolysis efficiency can be considered the electrolysis efficiency at the start of operation or the electrolysis efficiency at the start of hydrogen production. The actual health values ​​can be calculated as follows: actual health value [%] = (initial value of electrolysis efficiency / currently calculated electrolysis efficiency) × 100

[0187] Next, in S422, the health distribution actual values ​​of the electrolytic cells 110a and the electrolysis stack 110b are calculated. The health distribution actual values ​​can be calculated from the health distribution actual values ​​calculated for each of the electrolytic cells 110a and the electrolysis stack 110b and the number of targets.

[0188] Next, in S423, the actual state of health value calculated in S421 and the actual state of health distribution value calculated in S422 are sent to the electrolysis equipment database 300 and the control parameter calculation unit 230.

[0189] Next, the target value change amount calculation process executed by the target value change amount calculation section 231 of the control parameter calculation unit 230 will be described with reference to the flowchart of FIG.

[0190] First, in S430, the target value change amount calculation unit 231 performs a process of waiting until a control trigger from the control trigger generation unit 210 is detected.

[0191] If it is determined in the determination process of S430 that a control trigger has been detected, the target value change amount calculation unit 231 calculates the target value change amount of the health level target value of the electrolysis device 100 in S431.

[0192] In the processing of S431, the target value change amount of the target health value of the electrolysis device 100 is set to a different value when the actual health value is equal to or greater than the target health value and when the actual health value is below the target health value. Specifically, when the actual health value is equal to or greater than the target health value, the target value change amount is set to 0. When the actual health value is less than the target health value, the target value change amount is set to (target health value - actual health value). In S431, the target value change amount calculation unit 231 sends the calculated value of the target value change amount to the control parameter calculation unit 232.

[0193] Next, in S432 to S435, the target value change amount calculation unit 231 calculates the target value change amounts of the electrolytic cell 110a and the electrolytic stack 110b. The target value change amounts are calculated for each of the electrolytic cells 110a and each of the electrolytic stacks 110b.

[0194] In the processes of S432 to S435, the target value change amounts of the electrolytic cell 110a and the electrolytic stack 110b can be calculated using the percentile values ​​and interquartile ranges of the health distribution target values ​​and the health distribution actual values.

[0195] First, in S432, the 10th percentile value, 25th percentile value, 50th percentile value, 75th percentile value, 90th percentile value, and interquartile range of the health distribution target value are calculated.

[0196] Next, in S433, the 10th percentile value, 25th percentile value, 50th percentile value, 75th percentile value, 90th percentile value, and interquartile range of the health distribution performance value are calculated.

[0197] Next, in S434, the tile value difference between the target value of healthiness distribution and the actual value of healthiness distribution is calculated. Specifically, if the 10%tile value of the target value of healthiness distribution - the 10%tile value of the actual value of healthiness distribution ≦ 0, the 10%tile value difference is set to 0. If the 10%tile value of the target value of healthiness distribution - the 10%tile value of the actual value of healthiness distribution > 0, the 10%tile value difference is set to the 10%tile value of the target value of healthiness distribution - the 10%tile value of the actual value of healthiness distribution.

[0198] Similar to the 10th percentile value difference, the 25th percentile value difference, the 50th percentile value difference, the 75th percentile value difference, and the 90th percentile value difference are calculated.

[0199] Next, in S435, a target value change amount is calculated based on the interquartile range of the target health value and the tile value difference. In calculating the target value change amount in S435, the multiple tile value differences calculated in S434 are used, and the maximum value of the multiple tile value differences is calculated as the target value change amount.

[0200] In this embodiment, the range of tile value differences used to calculate the target value change is different when the interquartile range of the actual health value is equal to or greater than the interquartile range of the target health value and when the interquartile range of the actual health value is lower than the interquartile range of the target health value.

[0201] In this embodiment, the interquartile range of the actual health value and the interquartile range of the target health value are multiplied by a predetermined coefficient and compared to determine whether the interquartile range of the actual health value has widened relative to the interquartile range of the target health value, resulting in a large discrepancy.

[0202] Specifically, if the interquartile range of the actual health level value is greater than or equal to the interquartile range of the target health level value × 1.2, the target value change amount is the maximum of the 10th percentile value difference, 25th percentile value difference, and 50th percentile value difference. Also, if the interquartile range of the actual health level value is less than the interquartile range of the target health level value × 1.2, the target value change amount is the maximum of the 10th percentile value difference, 25th percentile value difference, 50th percentile value difference, 75th percentile value difference, and 90th percentile value difference.

[0203] When the interquartile range of the actual health level is greater than or equal to 1.2 times the interquartile range of the target health level, the actual health level data is more dispersed relative to the target health level, indicating a large deviation in the actual health level from the target value. In such cases, the deviation in the actual health level from the target health level is particularly large in areas of the health level distribution where the health level is high (e.g., the 75th percentile and 90th percentile values). Even if the target value change is calculated using the 75th percentile value difference and the 90th percentile value difference, the deviation exceeds the range of health level correction. Therefore, when the interquartile range of the actual health level is greater than or equal to 1.2 times the interquartile range of the target health level, the 75th percentile value and 90th percentile value are excluded from the calculation of the target value change, and the maximum of the 10th percentile value difference, the 25th percentile value difference, and the 50th percentile value difference is used as the target value change.

[0204] In the process of S435, the coefficient by which the interquartile range of the target health level value is multiplied is set to "1.2," but the value of this coefficient can be set arbitrarily depending on the controllability of the health level. Also, in this embodiment, the tile value difference used to calculate the target value change amount is changed depending on the difference between the interquartile range of the target health level value and the interquartile range of the actual health level value, but the tile value difference used to calculate the target value change amount can be set arbitrarily depending on the controllability of the health level.

[0205] In calculating the target value change amounts in S432 to S435, the target value change amounts can be calculated for each of the multiple electrolytic cells 110a. For example, the target value change amounts can be calculated based on the actual health values ​​of each individual electrolytic cell 110a so as to prioritize hydrogen production from the electrolytic cells 110a with the highest health levels among the multiple electrolytic cells 110a. In this case, the progression of deterioration in the health levels of the electrolytic cells 110a with the lowest health levels can be slowed. This allows the progression of deterioration in the health levels of the multiple electrolytic cells 110a to differ individually depending on their actual health values, thereby averaging the health levels of the multiple electrolytic cells 110a as much as possible.

[0206] Similarly, the target value change amount can be calculated for each of the multiple electrolysis stacks 110b. For example, the target value change amount can be calculated based on the actual health value of each electrolysis stack 110b so that hydrogen production is prioritized in the electrolysis stack 110b with the highest health value among the multiple electrolysis stacks 110b. In this case, the progression of deterioration in the health of the electrolysis stack 110b with the lowest health value can be delayed. This allows the progression of deterioration in the health of each of the multiple electrolysis stacks 110b to differ depending on the actual health value of each electrolysis stack, thereby averaging the health of the multiple electrolysis stacks 110b as much as possible.

[0207] Next, in S436 , the target value change amount calculation unit 231 outputs the target value change amount to the control parameter calculation unit 232 .

[0208] Next, the control parameter calculation process executed by the control parameter calculation unit 232 will be described with reference to the flowchart of FIG.

[0209] First, in S440, the control parameter calculation section 232 waits until a control trigger from the control trigger generation unit 210 is detected.

[0210] If it is determined in the determination process of S440 that a control trigger has been detected, the control parameter calculation unit 232 calculates control parameters in S441. The control parameter calculation unit 232 calculates control parameters for the electrolysis device 100, the electrolytic cell 110a, and the electrolytic stack 110b based on the target value change amount acquired from the target value change amount calculation unit 231, the characteristic priority acquired from the characteristic priority input unit 602, and the influence factor information in the influence factor maps 233a to 233e in the influence factor database 233. For multiple electrolytic cells 110a and multiple electrolytic stacks 110b, the control parameters for each electrolytic cell 110a and each electrolytic stack 110b are calculated.

[0211] The target value change amounts are calculated for each of the electrolysis device 100, the electrolysis stack 110b, and the electrolytic cell 110a. The priority order of the target value change amounts used in calculating the control parameters can be arbitrarily changed taking into consideration the magnitude of each target value change amount, the controllability of the healthiness, the ease of the recycling process, the time and cost required for the recycling process, and the profit from recycling.

[0212] In this embodiment, the order of priority for the target value change amounts used in calculating the control parameters in S441 is the target value change amount for the electrolysis device 100, the target value change amount for the electrolysis stack 110b, and the target value change amount for the electrolytic cell 110a. The priority of the electrolysis device 100 is higher from the viewpoint that the target value for the electrolysis device 100 set by the electrolysis device user 600 takes precedence over the target values ​​for the electrolysis stack 110b and the electrolytic cell 110a set by the electrolysis device manufacturer 500. Furthermore, because it is considered that health control of the electrolysis stack 110a is easier than health control of the electrolysis cell 110a, the priority of the electrolysis stack 110b is higher than that of the electrolysis cell 110a from the viewpoint of ease of control.

[0213] In calculating the control parameters, the point in the influence factor maps 233a to 233e of the influence factor database 233 where the predicted value of the deterioration in health when the use point of the current control parameter is changed matches the target value change amount is set as the next use point, and the control parameters are calculated.

[0214] At least one of the multiple control parameters may be changed. When multiple control parameters are changed, the next use point may be set at a point where the total value of the deterioration in the health level when each control parameter is changed matches the target value change amount.

[0215] In calculating the control parameters, when the next use point is determined using the influencing factor maps 233a to 233e, it is desirable to take into consideration the following (Condition 1) and (Condition 2).

[0216] (Condition 1) The amount of deviation from the current point of use in the health map 233a is made as small as possible. This makes it possible to suppress the amount of change in the control parameters and reduce the impact on the operable range of the electrolysis device 100.

[0217] (Condition 2) The electrolysis efficiency map 233b, the power consumption fluctuation characteristics map 233c, the maximum hydrogen production amount map 233d, and the hydrogen production amount variable range map 233e are used to minimize the amount of displacement when shifted from the current point of use.

[0218] In this embodiment, when calculating the amount of change in the control parameters, the characteristic priorities set by the electrolysis device user 600 are used to correct the deterioration rate figures for each of the influencing factor maps 233a to 233e. Specifically, the characteristic priorities set for the four characteristics of the electrolysis device 100, i.e., electrolysis efficiency, power consumption variation characteristics, maximum hydrogen production amount, and hydrogen production amount variable range, are used as weighting values ​​to correct the deterioration rate for each of the influencing factor maps 233a to 233e. This makes it possible to reduce the influence on the four characteristics of the electrolysis device.

[0219] In addition, in the influence factor maps 233a to 233e, the point at which the total value of the change in health level when moved from the current use point matches the change in the target value is set as the next use point, but depending on the controllability of the health level and the magnitude of the change in the target value, the total value of the change in health level when moved from the current use point may be multiplied by a coefficient and processed in an incremented manner.

[0220] In particular, if the target value change amount is greater each time it is calculated than the previous target value change amount, it is preferable to multiply the total value of the health change amount when moved from the current use point by a coefficient such as 1.2 and process it in a larger amount.

[0221] Next, in S442, the control parameter calculation unit 232 outputs the calculated control parameters to the electrolysis device 100. The auxiliary device control unit 126 of the electrolysis device 100 outputs control commands to the electrolytic cell temperature adjustment unit 121, the electrolytic stack temperature adjustment unit 122, the water vapor temperature adjustment unit 123, the air temperature adjustment unit 124, and the rectifier 125 based on the control parameters, and controls the operation of these auxiliary devices 121-125.

[0222] Next, in S443, the control parameter calculation unit 232 determines whether the actual change value resulting from changing from the previous usage point to the current usage point for all the influence factor maps 233a to 233e in the influence factor database 233 differs from the predicted change value of the influence factor maps 233a to 233e.

[0223] If it is determined as a result of the determination process in S443 that the actual change value is different from the predicted change value, in S444 the control parameter calculation unit 232 performs a process to reflect the actual change value in the target influence factor maps 233a to 233e.

[0224] When reflecting the actual change values ​​in the influencing factor maps 233a to 233e, it is desirable to create a prediction model that also uses the actual change values ​​up to now, rather than just making changes to the current usage point, and to calculate using the created prediction model and reflect the results in the map. As described above, for example, an approximation model can be used as the prediction model.

[0225] The order and content of the steps included in the flowcharts of Figures 18 to 24 are not limited to the configurations of Figures 18 to 24. For example, changing the order in which the steps are executed or integrating multiple steps into one step are also within the scope and gist of the present invention.

[0226] In the present embodiment described above, the electrolysis device user 600 sets a target health value for the electrolysis device 100, and the control parameter calculation unit 232 calculates the control parameters based on the target health value. As a result, the electrolysis device 100 is controlled based on the control parameters that reflect the wishes of the electrolysis device user 600, and the health value of the electrolysis device 100 can be brought closer to the target value desired by the electrolysis device user 600. As a result, the electrolysis device user 600 can know the usable life of the electrolysis device 100 and the amount of hydrogen that can be produced by the electrolysis device 100. The electrolysis device user 600 can formulate a business plan that utilizes the electrolysis device 100, which will promote the introduction of the electrolysis device 100.

[0227] Furthermore, in this embodiment, the electrolysis equipment manufacturer 500 sets the health distribution target values ​​of the electrolytic cell 110a and the electrolysis stack 110b, and the control parameter calculation unit 232 calculates the control parameters based on the health distribution target values. As a result, the electrolytic cell 110a and the electrolytic stack 110b are controlled based on the control parameters that reflect the wishes of the electrolysis equipment manufacturer 500, and the health distribution can be brought closer to the health distribution desired by the electrolysis equipment manufacturer 500. As a result, the electrolysis equipment manufacturer 500 can grasp when and how much of the reusable electrolytic cell 110a and the electrolysis stack 110b will be produced, which enables the electrolysis equipment manufacturer 500 to formulate a business plan for the reuse (reuse, recycling) of the equipment in the electrolysis equipment 100 and the electrolysis equipment 100 itself, and allows the manufacture of the equipment in the electrolysis equipment 100 and the electrolysis equipment 100 to proceed as planned. Furthermore, by reusing the equipment within the electrolysis device 100 and the electrolysis device 100 itself, waste can be reduced, which reduces CO2 emissions during the manufacture of the electrolysis device 100 and simultaneously improves profits over the life cycle of the electrolysis device 100.

[0228] Furthermore, in this embodiment, for large quantities of control objects, such as the electrolytic cells 110a and the electrolytic stacks 110b, in the electrolysis apparatus 100, a health level distribution is set as a target and the health levels are controlled based on the target health level distribution value, rather than specifying a health level for each individual control object. This facilitates the control of the health levels of control objects that exist in large quantities.

[0229] Furthermore, in this embodiment, the electrolysis device user 600 sets characteristic priorities for the four characteristics of the electrolysis device 100 (electrolysis efficiency, power consumption variation characteristics, maximum hydrogen production amount, and variable range of hydrogen production amount), and the control parameter calculation unit 232 calculates the control parameters based on the characteristic priorities. This enables the electrolysis device 100 to be controlled taking into account the characteristics of the electrolysis device 100 that the electrolysis device user 600 prioritizes other than the health level when producing hydrogen using the electrolysis device 100, and enables the usability of the electrolysis device 100 to be improved in line with the wishes of the electrolysis device user 600.

[0230] Furthermore, in this embodiment, the control parameters for the control object calculated by the control parameter calculation unit 232 only set upper and lower limit values ​​for each control item, i.e., voltage, current, voltage change rate, current change rate, power change rate, temperature, and temperature change rate. Therefore, when hydrogen is produced using the electrolysis device 100, each control item can be freely adjusted between its upper and lower limit values, and deterioration in the usability of the electrolysis device 100 for the electrolysis device user 600 can be suppressed.

[0231] Furthermore, in this embodiment, when the electrolysis device 100 calculates the control parameters, it uses influencing factor maps 233a to 233e that indicate the health of the controlled objects and the degree of influence of each control item on the four characteristics of the electrolysis device 100. Then, every time new performance data on the health is obtained during operation of the electrolysis device 100, a prediction model is created based on the performance health values ​​and reflected in the influencing factor maps 233a to 233e. This makes it possible to accommodate variations that occur between individual controlled objects, variations that occur when reused products are used, differences in operating environment conditions, and the like, thereby providing high controllability.

[0232] Furthermore, in this embodiment, a target value reset recommendation unit 400 is provided that recommends resetting the target value to the electrolysis equipment user 600 or the electrolysis equipment manufacturer 500 when the actual health value of the electrolysis equipment 100 is below the target value and when the actual health distribution values ​​of the electrolysis cell 110a and the electrolysis stack 110b are below the target value. This allows the electrolysis equipment user 600 or the electrolysis equipment manufacturer 500 to set appropriate target values ​​according to the actual health value and the actual health distribution value. Furthermore, the target value reset recommendation unit 400 creates a prediction model based on the actual health value and notifies the electrolysis equipment user 600 or the electrolysis equipment manufacturer 500 of the prediction model. This allows the electrolysis equipment user 600 or the electrolysis equipment manufacturer 500 to set more appropriate target values ​​based on the prediction model.

[0233] Furthermore, in this embodiment, the electrolysis device-related information of the electrolysis device 100 before the reuse treatment and the electrolysis device-related information of the electrolysis device 100 after the reuse treatment are recorded in different areas of the electrolysis device database 300. This allows the electrolysis device-related information of the electrolysis device 100 to be accumulated, and improves the accuracy when the electrolysis device manufacturer 500 creates the influencing factor maps 233a to 233e.

[0234] (Other embodiments) The present invention is not limited to the above-described embodiment, and various modifications can be made as follows without departing from the spirit of the present invention. The above-described embodiment presents one example of the present invention and is not intended to limit the scope of the invention. The above-described embodiment can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the gist of the invention. These embodiments and modifications are included in the scope and gist of the invention, as well as in the scope of the invention and its equivalents as defined in the claims.

[0235] For example, in the above embodiment, an example has been described in which an SOEC is used as the electrolytic cell constituting the electrolysis unit 110, but different types of electrolytic cells may also be used. Examples of different types of electrolytic cells include PEM (proton exchange membrane), AWE (alkaline water electrolysis), and AEM (anion exchange membrane water electrolysis).

[0236] Furthermore, in the above embodiment, the voltage, current, voltage change rate, current change rate, power change rate, temperature, and temperature change rate of the electrolysis device 100, the electrolytic cell 110a, and the electrolysis stack 110b are exemplified as control parameters, but the types of control parameters can be changed depending on the configuration of the electrolysis device 100. For example, if the electrolysis auxiliary unit 120 includes only a few types of temperature adjustment units, the number of control parameters can be reduced, and if the electrolysis auxiliary unit 120 includes many types of temperature adjustment units, the number of control parameters can be increased. When increasing or decreasing a control parameter, the influencing factor maps 233a to 233e shown in FIGS. 8 to 17 can be increased or decreased corresponding to the control parameter.

[0237] The electrolysis device operation system disclosed in this specification has the following features: (Item 1) an electrolysis device (100) having a plurality of electrolysis stacks (110b) each including a plurality of electrolysis cells (110a) stacked together to produce hydrogen by electrolyzing water; a control unit (126) that controls the control object based on a control parameter that affects the health of the control object; a health level target value input unit (601) in which a system user can input a health level target value, which is a target value of the health level; a control parameter calculation unit (232) that calculates a control parameter of the control object based on the health target value, The electrolysis device operation system has an electrolysis device as a control target. (Item 2) Item 2. The electrolysis device operation system according to item 1, wherein the target health value input unit allows the system user to set the target health value in accordance with an increase in the cumulative hydrogen production amount of the electrolysis device or the passage of cumulative operation time. (Item 3) the controlled object includes at least one of the electrolysis cell or the electrolysis stack, a health level range target value input unit (502) that allows the system user to input a health level range target value that is a target value of a health level range indicating a range of health levels of at least one of the plurality of electrolytic cells or the plurality of electrolytic stacks, 3. The electrolysis device operation system according to item 1 or 2, wherein the control parameter calculation unit calculates the control parameter based on the target health range value. (Item 4) Item 4. The electrolysis equipment operation system according to item 3, wherein the health level range target value input unit allows the system user to set the health level range in accordance with an increase in the cumulative hydrogen production amount of the electrolysis cell or the passage of cumulative operation time. (Item 5) the electrolysis device has a plurality of characteristics including at least one of electrolysis efficiency, power consumption fluctuation characteristics, maximum hydrogen production amount, and variable range of hydrogen production amount; a characteristic priority input unit (602) for the system user to input characteristic priorities which are priorities for each of the plurality of characteristics; 5. The electrolytic device operation system according to item 4, wherein the control parameter calculation unit calculates the control parameters based on the characteristic priority. (Item 6) an electrolysis device database (300) for recording electrolysis device-related information relating to the health of the electrolysis device, the electrolysis cell, and the electrolysis stack; The system users include an electrolysis device manufacturer (500) that manufactures the electrolysis device and an electrolysis device user (600) that produces hydrogen using the electrolysis device, the electrolysis device after the electrolysis device user has finished producing hydrogen can be recycled by the electrolysis device manufacturer based on the electrolysis device-related information; 6. The electrolytic equipment operation system according to item 5, wherein the electrolytic equipment database records the electrolytic equipment-related information before the reuse treatment and the electrolytic equipment-related information after the reuse treatment are performed in different areas. (Item 7) 7. The electrolytic device operation system according to item 6, wherein the electrolytic device-related information includes a health level of the controlled object, a cumulative hydrogen production amount of the controlled object, a cumulative operation time of the controlled object, and a serial number of the controlled object. (Item 8) the electrolysis device-related information includes electrolysis device initial information before the electrolysis device starts producing hydrogen and electrolysis device operation information after the electrolysis device starts producing hydrogen, 8. The electrolytic device operation system according to item 7, further comprising a state-of-health result value calculation unit (220) that calculates a state-of-health result value of the controlled object based on the electrolytic device operation information. (Item 9) Item 9. The electrolysis device operation system according to item 8, wherein the health status result value calculation unit calculates the electrolysis efficiency of the electrolysis device based on the amount of power input to the electrolysis device and the amount of hydrogen produced by the electrolysis device, which are included in the electrolysis device-related information, and calculates the health status result value based on an initial value of the electrolysis efficiency and the current electrolysis efficiency. (Item 10) 10. The electrolytic device operation system according to item 9, wherein the control parameter calculation unit calculates the control parameter based on the actual health value. (Item 11) a target value reset recommendation unit (400) that sends a reset recommendation notice regarding resetting of the health target value to the system user; Item 11. The electrolysis equipment operation system according to item 9 or 10, wherein the target value reset recommendation unit issues the reset recommendation notice to the system user when the actual health value is lower than the target health value. (Item 12) Item 12. The electrolysis equipment operation system according to Item 11, wherein the target value resetting recommendation unit creates a prediction model that predicts future health based on the actual health value when the actual health value is lower than the target health value, and notifies the system user of the prediction model. (Item 13) a control trigger generation unit (210) that generates a control trigger that triggers calculation of the control parameter in the control parameter calculation unit; The control trigger generation unit: When an instruction to start operation of the electrolysis device by the system user is detected, When a new input of the health target value is detected in the health target value input unit, When a new input of the characteristic priority is detected in the characteristic priority input unit, When a new input of the health degree range target value is detected in the health degree range target value input unit, When the target value reset recommendation notice is detected by the target value reset recommendation unit, When the cumulative hydrogen production amount of the electrolysis device reaches a predetermined control interval hydrogen production amount, 13. The electrolytic device operation system according to item 11 or 12, wherein the control trigger is generated when at least one of the conditions is satisfied: when the cumulative operation time of the electrolytic device reaches a preset control interval operation time. (Item 14) Item 14. The electrolysis device operation system according to Item 13, wherein the control trigger generation unit sets initial values ​​of the control interval hydrogen production amount and the control interval operating time when detecting an instruction to start operation of the electrolysis device from the system user. (Item 15) Item 15. The electrolysis apparatus operation system according to item 13 or 14, wherein the control trigger generation unit changes the control interval hydrogen production amount and the control interval operation time when detecting a notification recommending resetting of the health-level target value from the target value reset recommendation unit or a notification recommending resetting of the health-level distribution target value from the target value reset recommendation unit. (Item 16) a target value change amount calculation unit (231) that calculates a target value change amount for changing the target health value of the electrolysis device when the control trigger is generated by the control trigger generation unit, the control parameter calculation unit calculates the control parameter based on the target value change amount, 16. The electrolysis device operation system according to any one of items 13 to 15, wherein the target value change calculation unit sets the target value change=0 when the target health level value≦the actual health level value, and sets the target value change=the target health level value−the actual health level value when the target health level value>the actual health level value. (Item 17) the target value change amount calculation unit calculates the target value change amount for each of the electrolysis device, the electrolytic cell, and the electrolysis stack, Item 17. The electrolytic device operation system according to Item 16, wherein the control parameter calculation unit prioritizes the amounts of change in the target value of the electrolytic device, the amount of change in the target value of the electrolytic stack, and the amount of change in the target value of the electrolytic cell in that order. (Item 18) an influence factor map (233a to 233e) in which a predicted value of change in performance degradation related to hydrogen production of the electrolysis device is associated with the control parameters; 18. The electrolytic device operation system according to any one of items 1 to 17, wherein the control parameter calculation unit calculates the control parameters using the influencing factor map. (Item 19) Item 19. The electrolytic equipment operation system according to item 18, wherein, after calculating the control parameters using the influence factor map, if the predicted change value differs from an actual change value of performance degradation related to hydrogen production of the electrolytic equipment after the value of the control parameter is changed, the control parameter calculation unit changes the predicted value set in the influence factor map based on the actual change value. (Item 20) 20. The electrolytic apparatus operation system according to any one of items 1 to 19, wherein the control parameters include at least one control item of a voltage of the controlled object, a current of the controlled object, a voltage change rate of the controlled object, a current change rate of the controlled object, a power change rate of the controlled object, a temperature of the controlled object, and a temperature change rate of the controlled object. (Item 21) 21. The electrolysis device operation system according to item 20, wherein the control parameter calculation unit calculates an upper limit value and a lower limit value of the control item. (Item 22) The controlled object includes the electrolytic cell, a health distribution target value input unit (502) for the system user to input a health distribution target value that is a target value of a health distribution that is a distribution of the health of the plurality of electrolytic cells, 3. The electrolytic device operation system according to item 1 or 2, wherein the control parameter calculation unit calculates the control parameter based on the health distribution target value. [Explanation of symbols]

[0238] 100 Electrolyzer 110a electrolytic cell 110b electrolytic stack 120 Electrolysis auxiliary unit 126 Auxiliary control unit (control unit) 200 Electrolysis Equipment Management System 220 Soundness Actual Value Calculation Unit 232 Control parameter calculation unit 300 Electrolysis Equipment Database 400 Target value reset recommendation section 502 Soundness distribution target value input section (soundness range target value input section) 601 Soundness target value input section 602 Attribute priority input section

Claims

1. An electrolysis device (100) having a plurality of electrolysis stacks (110b) in which a plurality of electrolysis cells (110a) for producing hydrogen by electrolyzing water are stacked; a control unit (126) that controls the control object based on a control parameter that affects the health of the control object; a health target value input unit (601) in which a system user can input a health target value, which is a target value of the health; a control parameter calculation unit (232) that calculates a control parameter of the control object based on the health target value, The electrolysis device operation system has an electrolysis device as a control target.

2. 2. The electrolysis equipment operation system according to claim 1, wherein the target health value input unit allows the system user to set the target health value in accordance with an increase in a cumulative hydrogen production amount of the electrolysis equipment or elapsed cumulative operation time.

3. the controlled object includes at least one of the electrolysis cell or the electrolysis stack, a health level range target value input unit (502) that allows the system user to input a health level range target value that is a target value of a health level range indicating a range of health levels of at least one of the plurality of electrolytic cells or the plurality of electrolytic stacks, The electrolysis device operation system according to claim 1 , wherein the control parameter calculation unit calculates the control parameter based on the target health range value.

4. 4. The electrolysis apparatus operation system according to claim 3, wherein the health level range target value input unit allows the system user to set the health level range in accordance with an increase in a cumulative hydrogen production amount of the electrolytic cell or elapsed cumulative operation time.

5. the electrolysis device has a plurality of characteristics including at least one of electrolysis efficiency, power consumption fluctuation characteristics, maximum hydrogen production amount, and variable range of hydrogen production amount; a characteristic priority input unit (602) for the system user to input characteristic priorities which are priorities for each of the plurality of characteristics; The electrolysis device operation system according to claim 4 , wherein the control parameter calculation unit calculates the control parameters based on the characteristic priority.

6. an electrolysis device database (300) for recording electrolysis device-related information relating to the health of the electrolysis device, the electrolysis cell, and the electrolysis stack; The system users include an electrolysis device manufacturer (500) that manufactures the electrolysis device and an electrolysis device user (600) that produces hydrogen using the electrolysis device, the electrolysis device after the electrolysis device user has finished producing hydrogen can be recycled by the electrolysis device manufacturer based on the electrolysis device-related information; The electrolytic equipment operation system according to claim 5, wherein the electrolytic equipment database records the electrolytic equipment-related information before the reuse treatment and the electrolytic equipment-related information after the reuse treatment are performed in different areas.

7. 7. The electrolysis device operation system according to claim 6, wherein the electrolysis device-related information includes a health level of the controlled object, a cumulative hydrogen production amount of the controlled object, a cumulative operation time of the controlled object, and a serial number of the controlled object.

8. the electrolysis device-related information includes electrolysis device initial information before the electrolysis device starts producing hydrogen and electrolysis device operation information after the electrolysis device starts producing hydrogen, The electrolytic device operation system according to claim 7, further comprising a state-of-health result value calculation unit (220) that calculates a state-of-health result value of the controlled object based on the electrolytic device operation information.

9. 9. The electrolytic device operation system according to claim 8, wherein the state of health result value calculation unit calculates an electrolysis efficiency of the electrolytic device based on an amount of power input to the electrolytic device and an amount of hydrogen produced by the electrolytic device, which are included in the electrolytic device-related information, and calculates the state of health result value based on an initial value of the electrolysis efficiency and the current electrolysis efficiency.

10. The electrolysis device operation system according to claim 9 , wherein the control parameter calculation unit calculates the control parameter based on the actual health level value.

11. a target value reset recommendation unit (400) that sends a reset recommendation notice regarding resetting of the health target value to the system user; The electrolysis device operation system according to claim 9 , wherein the target value reset recommendation unit issues the reset recommendation notice to the system user when the actual health level value is lower than the target health level value.

12. 12. The electrolysis equipment operation system according to claim 11, wherein, when the actual health value is lower than the target health value, the target value resetting recommendation unit creates a prediction model that predicts future health based on the actual health value, and notifies the system user of the prediction model.

13. a control trigger generating unit (210) for generating a control trigger that triggers calculation of the control parameter in the control parameter calculation unit; The control trigger generation unit: When an instruction to start operation of the electrolysis device by the system user is detected, When a new input of the health target value is detected in the health target value input unit, When a new input of the characteristic priority is detected in the characteristic priority input unit, When a new input of the health degree range target value is detected in the health degree range target value input unit, When the target value reset recommendation notice is detected by the target value reset recommendation unit, When the cumulative hydrogen production amount of the electrolysis device reaches a predetermined control interval hydrogen production amount, The electrolytic device operation system according to claim 11 , wherein the control trigger is generated when at least one of the conditions is satisfied: when the cumulative operation time of the electrolytic device reaches a preset control interval operation time.

14. 14. The electrolysis device operation system according to claim 13, wherein the control trigger generation unit sets initial values ​​of the control interval hydrogen production amount and the control interval operating time when detecting an instruction to start operation of the electrolysis device from the system user.

15. 14. The electrolysis apparatus operation system according to claim 13, wherein the control trigger generation unit changes the control interval hydrogen production amount and the control interval operation time when detecting a notification recommending resetting of the health level target value from the target value reset recommendation unit or a notification recommending resetting of the health level distribution target value from the target value reset recommendation unit.

16. a target value change amount calculation unit (231) that calculates a target value change amount for changing the target health value of the electrolysis device when the control trigger is generated by the control trigger generation unit, the control parameter calculation unit calculates the control parameter based on the target value change amount, The electrolytic device operation system according to claim 13, wherein the target value change amount calculation unit sets the target value change amount to 0 when the target health level value is less than or equal to the actual health level value, and sets the target value change amount to the target health level value - the actual health level value when the target health level value is greater than or equal to the actual health level value.

17. the target value change amount calculation unit calculates the target value change amount for each of the electrolysis device, the electrolytic cell, and the electrolysis stack, 17. The electrolytic device operation system according to claim 16, wherein the control parameter calculation unit prioritizes the control parameters to be reflected in the calculation of the control parameters in the following order: the target value change amount for the electrolytic device, the target value change amount for the electrolytic stack, and the target value change amount for the electrolytic cell.

18. an influencing factor map (233a to 233e) in which a predicted value of change in performance degradation related to hydrogen production of the electrolysis device is associated with the control parameters; The electrolysis device operation system according to claim 1 , wherein the control parameter calculation unit calculates the control parameters using the influencing factor map.

19. 19. The electrolytic equipment operation system according to claim 18, wherein, after calculating the control parameter using the influence factor map, if the predicted value of change differs from an actual value of change in performance degradation related to hydrogen production of the electrolytic equipment after the value of the control parameter is changed, the control parameter calculation unit changes the predicted value set in the influence factor map based on the actual result.

20. 2. The electrolytic equipment operation system according to claim 1, wherein the control parameters include at least any one of control items: a voltage of the controlled object, a current of the controlled object, a voltage change rate of the controlled object, a current change rate of the controlled object, a power change rate of the controlled object, a temperature of the controlled object, and a temperature change rate of the controlled object.

21. The electrolysis device operation system according to claim 20 , wherein the control parameter calculation unit calculates upper and lower limit values ​​of the control items.

22. The controlled object includes the electrolytic cell, a health distribution target value input unit (502) for allowing the system user to input a health distribution target value that is a target value of a health distribution that is a distribution of the health levels of the plurality of electrolytic cells, The electrolysis device operation system according to claim 1 , wherein the control parameter calculation unit calculates the control parameter based on the health distribution target value.

Images