Junction boxes and hydrogen production systems used in hydrogen production systems

Abstract

This application discloses a junction box and a hydrogen production system for use in a hydrogen production system, belonging to the technical field of hydrogen production equipment. The junction box includes: a housing; an isolation module having multiple first ports located on the outside of the housing, used for connecting to first signal cables of an integrated skid of the hydrogen production system, the integrated skid including multiple first signal cables; and a conditioning module having second ports located on the outside of the housing, used for connecting to a control device of the hydrogen production system via second signal cables, the conditioning module including a signal conditioning circuit, the input terminal of the conditioning module being connected to the output terminal of the isolation module; the number of second ports is less than the number of first ports. The conditioning module in this junction box can output multiple first port inputs through a single second port, reducing the number of ports and cables from the junction box to the control device, simplifying wiring, and facilitating the installation and maintenance of the hydrogen production system.

Description

Technical Field

[0001] This application belongs to the field of hydrogen production equipment technology, and in particular relates to a junction box and a hydrogen production system used in a hydrogen production system. Background Technology

[0002] In the field of hydrogen production, a hydrogen production skid is an integrated hydrogen production device that integrates multiple functional modules required for hydrogen production into a skid-mounted structure, facilitating transportation and installation. During the operation of the hydrogen production skid, electrical signals need to be transmitted to an explosion-proof junction box via cables, and then connected from the explosion-proof junction box to the control cabinet to achieve isolation between the circuit and the external hazardous environment.

[0003] However, this traditional connection method has the problem of complicated wiring, with a large number of cables and cumbersome cabling, which increases the difficulty of installation and maintenance. Utility Model Content

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a junction box and hydrogen production system for use in a hydrogen production system, which simplifies wiring and facilitates the installation and maintenance of the hydrogen production system.

[0005] In a first aspect, this application provides a junction box for use in a hydrogen production system, the junction box comprising:

[0006] The enclosure defines an accommodating space;

[0007] An isolation module is disposed in the accommodating space. The isolation module has multiple first ports located outside the housing. The multiple first ports are used to connect to the first signal cables of the integrated skid of the hydrogen production system. The integrated skid includes multiple first signal cables.

[0008] A conditioning module is provided in the accommodating space. The conditioning module has a second port located outside the housing. The second port is used to connect to the control device of the hydrogen production system via a second signal cable. The conditioning module includes a signal conditioning circuit. The input terminal of the conditioning module is connected to the output terminal of the isolation module.

[0009] The number of the second ports is less than the number of the first ports.

[0010] According to the embodiment of this application, the junction box for a hydrogen production system has an isolation module that can achieve electrical isolation between the first signal cable and the external environment, and transmit the input of the first port to the input of the conditioning module. The conditioning module can output the input of multiple first ports to the control device through the same second port through the signal conditioning circuit. This junction box reduces the number of ports and cables from the junction box to the control device, making wiring simpler and facilitating the installation and maintenance of the hydrogen production system.

[0011] According to one embodiment of this application, the junction box further includes:

[0012] The mounting structure is located on the outside of the enclosure and is used to mount the enclosure to the integrated skid.

[0013] According to one embodiment of this application, the housing is provided with a first mounting base and a second mounting base, the isolation module is detachably mounted on the first mounting base, and the conditioning module is detachably mounted on the second mounting base.

[0014] According to one embodiment of this application, the first mounting base and the second mounting base are guide rails.

[0015] According to one embodiment of this application, the mounting structure is a mounting plate extending outward from the housing, the mounting plate having mounting holes through which the mounting plate can be fixed to the integrated skid.

[0016] According to one embodiment of this application, the junction box further includes:

[0017] A bus switching module is provided, wherein the input end of the bus switching module is connected to the output end of the conditioning module, and the output end of the bus switching module is connected to the second port. When the second signal cable is an optical fiber, the bus switching module is used to convert the signal output by the conditioning module into an optical signal.

[0018] According to one embodiment of this application, the junction box further includes:

[0019] A terminal block and a third mounting base are provided. The terminal block is mounted in the receiving space via the third mounting base. The input end of the terminal block is connected to the first port, and the output end of the terminal block is connected to the input end of the isolation module.

[0020] Secondly, this application provides a hydrogen production system, which includes:

[0021] An integrated skid, the integrated skid comprising multiple functional units;

[0022] The junction box used in the hydrogen production system as described in the first aspect above;

[0023] A control device is connected to the integrated skid via the junction box, and the control device is used to control the multiple functional units.

[0024] According to the hydrogen production system provided in the embodiments of this application, the isolation module in the junction box of the hydrogen production system can realize the electrical isolation between the first signal cable and the external environment, and transmit the signal in the first signal cable from the first port of the isolation module to the second input terminal of the conditioning module. The conditioning module can convert the signal type so that the signals of multiple first ports can be output to the control device through the same second port. The hydrogen production system reduces the number of second ports and second signal cables, making the wiring simpler and facilitating the installation and maintenance of the hydrogen production system.

[0025] According to one embodiment of this application, a plurality of the junction boxes are connected in parallel to the control device.

[0026] According to one embodiment of this application, a plurality of the junction boxes and the control device form a series circuit.

[0027] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0028] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0029] Figure 1 This is one of the structural schematic diagrams of a junction box used in a hydrogen production system provided in the embodiments of this application;

[0030] Figure 2 This is the second schematic diagram of the junction box used in a hydrogen production system provided in the embodiments of this application;

[0031] Figure 3 This is the third schematic diagram of the junction box used in a hydrogen production system provided in the embodiments of this application;

[0032] Figure 4 This is a schematic diagram of the hydrogen production system provided in the embodiments of this application;

[0033] Figure 5 This is one of the wiring diagrams of the hydrogen production system provided in the embodiments of this application;

[0034] Figure 6 This is a second schematic diagram of the wiring method of the hydrogen production system provided in the embodiments of this application;

[0035] Figure 7 This is the third schematic diagram of the wiring method of the hydrogen production system provided in the embodiments of this application.

[0036] Figure label:

[0037] Junction box 100, enclosure 110, isolation module 120, first port 121, conditioning module 130, second port 131, bus switching module 140, terminal block 150, first mounting base 161, second mounting base 162, third mounting base 163, mounting structure 170, identification tag 180.

[0038] Hydrogen production system 200, integrated skid 210, control device 220. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0040] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0041] The junction box for hydrogen production systems provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0042] like Figure 1 As shown, the junction box 100 used in the hydrogen production system includes: a box body 110, an isolation module 120, and a conditioning module 130.

[0043] It should be noted that the hydrogen production system includes functional units such as electrolyzers, power supplies, regulating valves, and thermocouples. Power line communication (PLC) is typically used to monitor and control these functional units. PLC technology can embed communication signals into power signals, enabling dual transmission of power and data.

[0044] In this embodiment, the housing 110 defines an accommodating space, and the isolation module 120 is disposed in the accommodating space. The isolation module 120 has a plurality of first ports 121, which are disposed on the outside of the housing 110. The plurality of first ports 121 are used to connect to the first signal cable of the integrated skid of the hydrogen production system. The integrated skid includes a plurality of first signal cables.

[0045] The integrated skid is a modular component of the hydrogen production system, integrating multiple functional units into a unified framework, which facilitates transportation and installation. The integrated skid is connected to the junction box 100 via a first signal cable to transmit control signals from the control device and feedback signals from the integrated skid.

[0046] The isolation module 120 is an electrical isolation device that can physically separate hazardous areas (e.g., flammable and explosive gases and equipment in an integrated skid) from control devices in non-hazardous areas.

[0047] The first port 121 is located on the outside of the housing 110 of the junction box 100, which facilitates the insertion of the first signal cable. The first signal cable can be connected to the isolation module 120 through the first port 121.

[0048] In practice, the isolation module 120 may include a safety barrier and a relay.

[0049] A safety barrier is a safety protection device used to limit the energy (voltage and current) of a circuit. It typically includes a voltage limiting element (e.g., a Zener diode) and a current limiting resistor. A safety barrier can form a barrier between a dangerous area and a non-dangerous area to prevent excessive energy from causing an explosion or damaging the equipment.

[0050] A relay is an electronically controlled switch, mainly consisting of a coil, contacts, and a drive mechanism. When the coil is energized, it generates a magnetic field, which attracts the mechanical contacts to connect or disconnect the circuit. Relays can control large current loads with small currents, enabling remote or automatic switching of circuits, while also providing electrical isolation.

[0051] It should be noted that the integrated skid's multiple functional units include two main categories: sensors and actuators.

[0052] Sensors are used to monitor specific parameters in the target equipment and feed back the monitoring results to the control device. Examples include pressure transmitters, thermocouples, and flow meters.

[0053] Actuators are used to receive control signals from control devices and perform corresponding operations, such as switching valves, regulating valves, and solenoid valves.

[0054] In actual operation, the first signal cable of the sensor can be connected to the safety barrier in the isolation module 120, and the first signal cable of the actuator can be connected to the relay in the isolation module 120.

[0055] In this embodiment, the conditioning module 130 is disposed in the accommodating space. The conditioning module 130 has a second port 131, which is located outside the housing 110. The second port 131 is used to connect to the control device of the hydrogen production system through a second signal cable. The conditioning module 130 includes a signal conditioning circuit. The input terminal of the conditioning module 130 is connected to the output terminal of the isolation module 120.

[0056] The signal conditioning circuit in the conditioning module 130 is a circuit used to process electrical signals, and it typically has amplification, filtering, isolation or conversion functions.

[0057] The conditioning module 130 can receive the signal output by the isolation module 120 and adjust the signal type through the signal conditioning circuit, for example, converting the analog signal to a digital signal, or converting the digital signal to an analog signal, and then outputting the adjusted signal from the second port 131.

[0058] The second port 131 is connected to the control device via the second signal cable, and can transmit the signal output by the conditioning module 130 to the control device.

[0059] The control device is used to monitor and control the hydrogen production process. It can receive signals from various sensors in the integrated skid and output control commands to ensure the normal operation of the hydrogen production system.

[0060] It should be noted that the signals between the integrated skid, junction box 100 and control device can be transmitted bidirectionally.

[0061] For example, the signal output by the integrated skid to the control device is transmitted through the isolation module 120 to the input of the conditioning module 130 via the first signal cable, and then transmitted to the input of the control device via the second signal cable after being regulated by the signal conditioning circuit.

[0062] The signal output by the control device to the integrated skid has the opposite transmission path to the signal output by the integrated skid to the control device. That is, it is transmitted from the control device to the second port 131 of the conditioning module 130 through the second signal cable, and then transmitted to the integrated skid through the isolation module 120 through the first signal cable after being regulated by the signal conditioning circuit.

[0063] In this embodiment, the number of second ports 131 is less than the number of first ports 121.

[0064] Understandably, in PLC communication, electrical signals can be divided into analog signals and digital signals. Analog signals can represent changes in continuous information, such as flow rate and temperature signals, while digital signals can represent data as a series of discrete values.

[0065] In practice, analog signals are susceptible to crosstalk and noise, and different analog signals are usually transmitted using different lines.

[0066] Digital signals have strong anti-interference capabilities and are easy to multiplex; different digital signals can be transmitted using the same digital bus.

[0067] In this embodiment, the conditioning module 130 can adjust the signal type in the first signal cable, convert analog signals from different first ports 121 into digital signals, and output them to the control device through the same second port 131 and the second signal cable. This makes the number of second ports 131 less than the number of first ports 121, that is, the number of second signal cables required is less than the number of first signal cables, thus reducing the number of second signal cables used.

[0068] In actual implementation, the conditioning module 130 can be a bus I / O module. A bus I / O module is a hardware device responsible for data input and output conversion between the bus and external devices. It can convert sensor signals into digital signal inputs or control signals into output signals required by the actuator.

[0069] In related technologies, the cables in the hydrogen production skid are connected to an explosion-proof junction box, and then from the explosion-proof junction box to the control cabinet. This allows for signal transmission between the hydrogen production skid and the control cabinet while achieving electrical isolation between the wiring in the hydrogen production skid and the external environment. However, this cable connection method results in a large number of cables and cumbersome wiring, increasing the difficulty of installation and maintenance.

[0070] In this embodiment, by setting an isolation module 120 and a conditioning module 130 in the junction box 100, the first signal cable of the integrated skid is connected to the isolation module 120 through the first port 121, realizing electrical isolation between the cable and the external environment. The output of the isolation module 120 can transmit the input of the first port 121 to the input of the conditioning module 130. The conditioning module 130 can output the input of multiple first ports 121 to the control device through the same second port 131 through the signal conditioning circuit, reducing the number of second ports 131, thereby reducing the number of cables required to connect from the junction box 100 to the control device, making the wiring simpler and facilitating the installation and maintenance of the hydrogen production system.

[0071] According to the embodiment of this application, the junction box 100 applied to the hydrogen production system has an isolation module 120 that can achieve electrical isolation between the first signal cable and the external environment, and transmit the input of the first port 121 to the input of the conditioning module 130. The conditioning module 130 can output the input of multiple first ports 121 to the control device through the same second port 131 through the signal conditioning circuit. The junction box 100 reduces the number of ports and cables from the junction box 100 to the control device, making the wiring simpler and facilitating the installation and maintenance of the hydrogen production system.

[0072] In some embodiments, such as Figure 2 As shown, the junction box 100 also includes a mounting structure 170 for mounting the box 110 to the integrated skid.

[0073] The mounting structure 170 is a mechanical component installed on the junction box 100 housing 110 for fixing and connecting the housing 110 to the integrated skid.

[0074] In actual implementation, the installation position of the housing 110 can be determined according to the specific structure of the integrated skid. For example, the housing 110 can be installed on the side wall of a certain functional unit.

[0075] Understandably, the integrated skid contains a large number of sensors and actuators, which are connected to the junction box 100 via corresponding first signal cables, and then to the control device via the junction box 100.

[0076] In this embodiment, the junction box 100 is installed into the integrated skid via the mounting structure 170, which can significantly reduce the length of the first signal cable, effectively reducing wiring difficulty and material costs. Furthermore, the isolation module 120 and the conditioning module 130 are installed in the same enclosure 110, which can also reduce the cable length between the first output terminal and the second input terminal.

[0077] In practice, during the production process before the integrated skid leaves the factory, the junction box 100 can be pre-installed on the integrated skid to improve the efficiency of on-site wiring work.

[0078] In some embodiments, the mounting structure 170 is a mounting plate extending outward from the housing 110. The mounting plate has mounting holes through which the mounting plate can be fixed to the integrated skid.

[0079] In this implementation, such as Figure 2 As shown, the mounting structure 170 can use bolt holes, that is, mounting plates extending outward are set at the four corners of the housing 110, and the mounting holes on the mounting plates are bolt holes. The housing 110 and the integrated skid are securely installed by bolting.

[0080] In some embodiments, the housing 110 is provided with a first mounting base 161 and a second mounting base 162, the isolation module 120 is detachably mounted on the first mounting base 161, and the conditioning module 130 is detachably mounted on the second mounting base 162.

[0081] In this embodiment, the first mounting base 161 and the second mounting base 162 are structural components inside the housing 110 used to fix the various modules.

[0082] The first mounting base 161 is used to install the isolation module 120, and the second mounting base 162 is used to install the conditioning module 130. The first mounting base 161 and the second mounting base 162 are designed to be detachable to facilitate the installation, replacement and maintenance of the modules.

[0083] In this embodiment, the first mounting base 161 and the second mounting base 162 enable the isolation module 120 and the conditioning module 130 to be installed and removed independently, thereby improving the modularity and maintenance convenience of the junction box 100.

[0084] In some embodiments, the first mounting base 161 and the second mounting base 162 are guide rails.

[0085] In this embodiment, such as Figure 2 As shown, the first mounting base 161 and the second mounting base 162 can be guide rails. The isolation module 120 and the conditioning module 130 are installed on the guide rails by snap-fit. In scenarios where the number of cables increases and the number of input and output terminals is insufficient, new isolation modules 120 or conditioning modules 130 can be added to the guide rails, which can realize the expandable installation of isolation modules 120 and conditioning modules 130.

[0086] In some embodiments, such as Figure 1 As shown, the junction box 100 also includes a bus switching module 140.

[0087] The bus switching module 140 can be used for signal conversion and transmission between different bus systems. The bus switching module 140 has photoelectric conversion function, which can convert electrical signals into optical signals, or vice versa. In addition, the bus switching module 140 also has protocol conversion function, which can be compatible with multiple communication protocols.

[0088] In this embodiment, the input terminal of the bus switching module 140 is connected to the output terminal of the conditioning module 130, and the output terminal of the bus switching module 140 is connected to the second port 131. When the second signal cable is an optical fiber, the bus switching module 140 is used to convert the signal output by the conditioning module 130 into an optical signal and transmit it to the control device through the optical fiber, thereby improving the transmission bandwidth. Furthermore, the optical signal is not subject to electromagnetic interference and there is no risk of leakage current, resulting in higher reliability.

[0089] In some embodiments, such as Figure 1 and Figure 2 As shown, the junction box 100 also includes a terminal block 150 and a third mounting base 163. The terminal block 150 is mounted in the receiving space via the third mounting base 163. The input end of the terminal block 150 is connected to the first port 121, and the output end of the terminal block 150 is connected to the input end of the isolation module 120.

[0090] In this embodiment, the terminal block 150 can transmit signals from multiple first signal cables to the isolation module 120 through a centralized and fixed cable, making the line connection more orderly and facilitating the installation and maintenance of the junction box 100. The third mounting base 163 can increase the expansion capability of the terminal block 150.

[0091] In some embodiments, such as Figure 3 As shown, the junction box 100 also includes an identification tag 180.

[0092] In actual implementation, the identification tag 180 can be set on the outside of the box 110, and the identification tag 180 can be at least one of NFC tag, RFID tag or QR code tag.

[0093] In this embodiment, by interacting with the identification tag 180, a real-time IO mapping table (including Modbus address / IP configuration, wiring diagram and device certificate (explosion-proof / protection level)) can be obtained, which facilitates the troubleshooting and maintenance of the junction box 100.

[0094] In actual implementation, during the installation, commissioning, and maintenance phases, technicians use mobile terminals to scan the NFC / RFID / QR code tags on the surface of enclosure 110 to automatically obtain a configuration file containing IO point mapping relationships, Modbus register addresses, and the electronic nameplate of the equipment. This file can be directly imported into engineering software such as TIA Portal / CODESYS to achieve "one-click deployment" of PLC hardware configuration. When the system needs to be expanded, the newly added instrument signals only need to be connected to the reserved IO channels in the enclosure, and the system integration can be completed through hot updates of the device description file (GSDML).

[0095] This application also provides a hydrogen production system, such as... Figure 4 As shown, the hydrogen production system 200 includes an integrated skid 210, a junction box 100, and a control device 220.

[0096] The integrated skid 210 includes multiple functional units, including but not limited to an electrolytic cell, a power supply, a regulating valve, and a thermocouple.

[0097] The control device 220 is connected to the integrated skid 210 via the junction box 100, and the control device 220 is used to control multiple functional units.

[0098] In this embodiment, the electrolyzer includes, but is not limited to, alkaline electrolyzer (AWE), proton exchange membrane electrolyzer (PEM), solid oxide electrolyzer (SOEC), and anion exchange membrane electrolyzer (AEM).

[0099] According to the hydrogen production system 200 provided in the embodiments of this application, the isolation module 120 in the junction box 100 of the hydrogen production system 200 can realize the electrical isolation of the first signal cable from the external environment and transmit the input of the first port 121 to the input of the conditioning module 130. The conditioning module 130 can output the input of multiple first ports 121 to the control device 220 through the same second port 131 through the signal conditioning circuit. The hydrogen production system 200 reduces the number of ports and cables from the junction box 100 to the control device 220, making the wiring simpler and facilitating the installation and maintenance of the hydrogen production system 200.

[0100] In some embodiments, multiple junction boxes 100 are connected in parallel to the control device 220.

[0101] Understandably, the hydrogen production system 200 may include one or more integrated skids 210, and each integrated skid 210 may include one or more junction boxes 100.

[0102] When there are multiple junction boxes 100 in the hydrogen production system 200, the multiple junction boxes 100 can be connected to the control device 220 in parallel.

[0103] For example, such as Figure 5 As shown, three junction boxes 100 (A, B and C respectively) are connected to the control device 220 in parallel to achieve bidirectional communication with the control device 220.

[0104] In this embodiment, multiple junction boxes 100 are connected in parallel to the control device 220, which can improve system reliability. When a single junction box 100 fails, the other junction boxes 100 can still operate normally. It is also convenient for expansion and maintenance. When adding a new junction box 100, it is only necessary to connect it in parallel without modifying the original wiring.

[0105] In some embodiments, multiple junction boxes 100 form a series circuit with the control device 220.

[0106] In this embodiment, multiple junction boxes 100 are connected in series with the control device 220 to form a loop. Signals between the control device 220 and each junction box 100 are transmitted through this loop. This configuration has a fault redundancy function. When a cable fails and cannot transmit a signal, subsequent signals can be transmitted in reverse to the control cabinet.

[0107] For example, such as Figure 6 As shown, the three junction boxes 100 (A, B, and C respectively) form a series circuit with the control device 220. If the cable between A and B fails, the signal cannot be transmitted. Figure 7 As shown, at this time, the signal of A can be transmitted along the path of A-control device 220, the signal of B can be transmitted along the path of BC-control device 220, and the signal of C can be transmitted along the path of C-control device 220. The three junction boxes 100 can still communicate normally with the control device 220.

[0108] In practice, the second signal cable can use the MRP (Media Redundancy Protocol).

[0109] Understandably, the MRP protocol is a communication protocol that typically supports load balancing and failover functions, ensuring that devices can maintain communication even when some lines fail.

[0110] In this embodiment, multiple junction boxes 100 form a series circuit with the control device 220, which can improve the fault redundancy capability of the hydrogen production system 200. When the second signal cable fails and cannot transmit signals, the junction box 100 in the circuit can still maintain normal communication with the control device 220 through the reverse path.

[0111] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0112] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

[0113] In the description of this application, it should be understood that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0114] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0115] In the description of this application, "multiple" means two or more.

[0116] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them.

[0117] In the description of this application, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0118] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0119] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A junction box for use in a hydrogen production system, characterized in that, include: The enclosure defines an accommodating space; An isolation module is disposed in the accommodating space. The isolation module has multiple first ports located outside the housing. The multiple first ports are used to connect to the first signal cables of the integrated skid of the hydrogen production system. The integrated skid includes multiple first signal cables. A conditioning module is provided in the accommodating space. The conditioning module has a second port located outside the housing. The second port is used to connect to the control device of the hydrogen production system via a second signal cable. The conditioning module includes a signal conditioning circuit. The input terminal of the conditioning module is connected to the output terminal of the isolation module. The number of the second ports is less than the number of the first ports.

2. The junction box for a hydrogen production system according to claim 1, characterized in that, Also includes: The mounting structure is located on the outside of the enclosure and is used to mount the enclosure to the integrated skid.

3. The junction box for a hydrogen production system according to claim 2, characterized in that, The housing is provided with a first mounting base and a second mounting base. The isolation module is detachably mounted on the first mounting base, and the conditioning module is detachably mounted on the second mounting base.

4. The junction box for a hydrogen production system according to claim 3, characterized in that, The first mounting base and the second mounting base are guide rails.

5. The junction box for a hydrogen production system according to claim 2, characterized in that, The mounting structure is a mounting plate extending outward from the housing. The mounting plate has mounting holes through which the mounting plate can be fixed to the integrated skid.

6. The junction box for a hydrogen production system according to claim 1, characterized in that, Also includes: A bus switching module is provided, wherein the input end of the bus switching module is connected to the output end of the conditioning module, and the output end of the bus switching module is connected to the second port. When the second signal cable is an optical fiber, the bus switching module is used to convert the signal output by the conditioning module into an optical signal.

7. The junction box for a hydrogen production system according to any one of claims 1-6, characterized in that, Also includes: A terminal block and a third mounting base are provided. The terminal block is mounted in the receiving space via the third mounting base. The input end of the terminal block is connected to the first port, and the output end of the terminal block is connected to the input end of the isolation module.

8. A hydrogen production system, characterized in that, include: An integrated skid, the integrated skid comprising multiple functional units; The junction box for use in a hydrogen production system as described in any one of claims 1-7; A control device is connected to the integrated skid via the junction box, and the control device is used to control the multiple functional units.

9. The hydrogen production system according to claim 8, characterized in that, Multiple junction boxes are connected in parallel to the control device.

10. The hydrogen production system according to claim 8, characterized in that, The multiple junction boxes and the control device form a series circuit.

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