Integrated device box and photoelectric cathode protection device

Abstract

The invention discloses an integrated device box, and relates to the technical field of cathode protection devices, the integrated device box comprises a box body, a first mounting plate and a second mounting plate, the box body comprises a base, a rear cover and an opening and closing door, the rear cover is detachably connected with the base, the rear cover covers one end of each of two side plates, the opening and closing door covers the other end of each of the two side plates, and the first mounting plate and the second mounting plate are detachably connected. The first mounting plate is arranged between the rear cover and the opening and closing door and is parallel to the rear cover, the touch screen is mounted on the first mounting plate, the second mounting plate is connected to the rear cover and the first mounting plate, the electrical component is mounted on the top surface of the second mounting plate and is used for controlling the photoelectric cathode protection device, and the storage battery is detachably arranged on the base. And the base is positioned between the base and the second mounting plate. The invention further discloses a photoelectric cathode protection device which comprises a solar panel, protected metal, a reference electrode, an auxiliary anode and the integrated device box. The integrated device box provided by the invention has relatively high integration level and is convenient to disassemble and assemble.

Description

Technical Field

[0001] This invention relates to the field of cathodic protection devices, and in particular to an integrated device box and a photoelectric cathodic protection device. Background Technology

[0002] Photocathode protection technology utilizes the photovoltaic effect of semiconductors to protect metals from corrosion using solar energy. The photovoltaic effect is an effect where the charge distribution within an object changes when it is exposed to light, generating electromotive force and current. Currently, while theoretical photocathode protection systems exist, practical devices are lacking. Furthermore, due to the large number of components in photocathode protection systems, most are housed within a device enclosure, resulting in fragmented assembly, a large overall enclosure size, low integration, and inconvenience for transportation and installation. Therefore, there is an urgent need for an integrated device enclosure and photocathode protection device to address these technical problems. Summary of the Invention

[0003] The purpose of this invention is to provide an integrated device box and a photocathode protection device to solve the problems existing in the prior art, which have a high degree of integration and are easy to disassemble and install.

[0004] To achieve the above objectives, the present invention provides the following solution:

[0005] This invention provides an integrated device box, including a box body, a first mounting plate, and a second mounting plate. The box body includes a base, a rear cover, a switch door, two side plates, and a top plate. The top plate is fixedly connected to the top of the two side plates, and the bottom of the two side plates is detachably connected to the base. The rear cover is detachably connected to the base and covers one end of the two side plates. The switch door covers the other end of the two side plates and can be opened and closed. The first mounting plate is detachably connected to the base and is disposed between the rear cover and the switch door, and is parallel to the rear cover. The first mounting plate is used to mount a touch screen. The second mounting plate is detachably connected to the rear cover and the first mounting plate. The top surface of the second mounting plate is used to mount electrical components for controlling the operation of a photocathode protection device. A battery is detachably mounted on the base and located between the base and the second mounting plate.

[0006] In some embodiments, the electrical components include a motherboard and a solar controller, a voltage detector, and a DC regulator fixedly mounted on the motherboard. The motherboard is detachably mounted on the second mounting plate. The solar controller has a charging input port, a battery port, and an output port. The charging input port is electrically connected to the charging cable of the solar panel. The battery port is electrically connected to the battery. The output port is electrically connected to the motherboard. The voltage detector, the DC regulator, and the touch screen are electrically connected to the motherboard. The negative terminal of the DC regulator's output is electrically connected to the protected metal, and the positive terminal of the DC regulator's output is electrically connected to the auxiliary anode. The voltage detector is electrically connected to the protected metal.

[0007] In some embodiments, the upper part of the back cover is provided with a charging cable hole for a first wire to pass through. The two ends of the first wire are electrically connected to the output end of the solar panel and the charging input port of the solar controller, respectively. The lower part of the back cover is provided with multiple wire holes for wire groups to pass through.

[0008] In some embodiments, the conductor group includes a second conductor, a third conductor, a fourth conductor, and a fifth conductor. The two ends of the second conductor are electrically connected to the protected metal and the negative output terminal of the DC voltage regulator, respectively. The two ends of the third conductor are electrically connected to the auxiliary anode and the positive output terminal of the DC voltage regulator, respectively. The two ends of the fourth conductor are electrically connected to one output port of the voltage detector and the reference electrode, respectively. The two ends of the fifth conductor are electrically connected to the other output port of the voltage detector and the protected metal, respectively.

[0009] In some embodiments, an output voltage measuring device is also included, and the lead assembly further includes a sixth lead and a seventh lead. The two ends of the sixth lead are electrically connected to the output voltage measuring device and the protected metal, respectively, and the two ends of the seventh lead are electrically connected to the output voltage measuring device and the auxiliary anode, respectively. The output voltage measuring device is used to measure the voltage supplied to the auxiliary anode and the protected metal.

[0010] In some embodiments, the base is provided with a positioning slot for engaging the battery.

[0011] In some embodiments, aviation plugs are fixedly provided at the charging cable hole and the plurality of wire holes, and the ends of the first wire and the wire group away from the solar controller are fixedly connected to the aviation plugs.

[0012] In some implementations, the door is a swing door.

[0013] In some embodiments, a support plate is also fixedly provided on the rear cover, the support plate is perpendicular to the rear cover and fixedly connected, and the second mounting plate is detachably connected to the support plate.

[0014] The present invention also provides a photoelectric cathode protection device, comprising a solar panel, a protected metal, a reference electrode, an auxiliary anode, and an integrated device box as described above. The solar panel is electrically connected to the integrated device box, and the integrated device box is electrically connected to the protected metal, the reference electrode, and the auxiliary anode.

[0015] The present invention achieves the following technical effects compared to the prior art:

[0016] The integrated device box provided by this invention is divided into three parts: the first part is between the first mounting plate and the switch door; the second part is between the base and the second mounting plate; and the third part is between the second mounting plate and the top plate. The heavier battery is placed in the second part, while the lighter electrical components are mounted on the second mounting plate. The first mounting plate is parallel to the rear cover, and the touch screen is mounted on the first mounting plate. This rational division and utilization of the internal space of the box achieves a high degree of integration. Furthermore, the side plates and the base are detachably connected, as are the second mounting plate and the side plates, allowing for easy installation and removal for maintenance. The first mounting plate isolates the switch door from the electrical components, preventing interference with the vulnerable rear components (electrical components and battery) during daily operation, reducing the risk of device damage and improving operational stability. Touch screen operation directly reduces mechanical handling, minimizing corrosion and damage to mechanical parts, and lowering the failure rate. The heavier battery also lowers the overall center of gravity of the integrated device box, making the operation more stable and less prone to tilting or displacement. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the external shape of the integrated device box in some embodiments of the present invention;

[0019] Figure 2 This is a schematic diagram showing the connection between the side plate and the top plate of the integrated device box in some embodiments of the present invention;

[0020] Figure 3 This is an exploded view of the integrated device box in some embodiments of the present invention;

[0021] Figure 4 This is a wiring diagram of the rear cover of the integrated device box in some embodiments of the present invention;

[0022] Figure 5 This is a schematic diagram showing the connection between the base, rear cover, and second mounting plate of the integrated device box in some embodiments of the present invention.

[0023] Figure 6 This is a schematic diagram showing the connection of the base, rear cover, first mounting plate, and second mounting plate of the integrated device box in some embodiments of the present invention.

[0024] Figure 7 This is a schematic diagram of a photocathode protection device in some embodiments of the present invention.

[0025] In the diagram: 101-Integrated device box; 102-Solar panel; 103-Protected metal; 104-Reference electrode; 105-Auxiliary anode; 1-Side plate; 2-Top plate; 3-Switch door; 4-Lock; 5-Rear cover; 6-First mounting plate; 7-Base; 8-Second mounting plate; 9-Through hole; 10-Charging cable hole; 11-Wire hole; 12-Support plate; 13-Card slot; 14-Mounting cavity; 15-First wire; 16-Second wire; 17-Third wire; 18-Fourth wire; 19-Fifth wire; 20-Sixth wire; 21-Seventh wire; 22-Solar controller; 23-Main board; 24-DC voltage regulator; 25-Voltage detector; 26-Battery. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] The purpose of this invention is to provide an integrated device box and a photocathode protection device to solve the problems existing in the prior art. It has a high degree of integration and is easy to disassemble and install.

[0028] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Example 1

[0030] like Figures 1-7As shown, the present invention provides an integrated device box 101, including a box body, a first mounting plate 6 and a second mounting plate 8. The box body includes a base 7, a rear cover 5, a switch door 3, two side plates 1 and a top plate 2. The top plate 2 is fixedly connected to the top of the two side plates 1. The bottom of the two side plates 1 is detachably connected to the base 7. The rear cover 5 is detachably connected to the base 7 and covers one end of the two side plates 1. The switch door 3 covers the other end of the two side plates 1 and can be opened and closed. The first mounting plate 6 is detachably connected to the base 7 and is disposed between the rear cover 5 and the switch door 3 and is parallel to the rear cover 5. The first mounting plate 6 is used to install a touch screen. The second mounting plate 8 is detachably connected to the rear cover 5 and the first mounting plate 6. The top surface of the second mounting plate 8 is used to install electrical components. The electrical components are used to control the operation of the photocathode protection device. The battery 26 is detachably disposed on the base 7 and is located between the base 7 and the second mounting plate 8. The integrated device box 101 is divided into three parts: the first part is between the first mounting plate 6 and the switch door 3; the second part is between the base 7 and the second mounting plate 8; and the third part is between the second mounting plate 8 and the top plate 2. The heavier battery 26 is placed in the second part, while the lighter electrical components are mounted on the second mounting plate 8. The first mounting plate 6 is parallel to the rear cover 5, and the touch screen is mounted on the first mounting plate 6. This rational division and utilization of the internal space of the box achieves a high degree of integration. Furthermore, the side plate 1 and the base 7 are detachably connected, and the second mounting plate 8 and the side plate 1 are detachably connected, allowing for easy installation and removal for maintenance. The first mounting plate 6 isolates the switch door 3 from the electrical components, preventing interference with the vulnerable rear components (electrical components and battery 26) during daily operation, reducing the risk of device damage and improving operational stability. Moreover, touch screen operation directly reduces mechanical operation, minimizing corrosion and damage to mechanical parts and lowering the failure rate. Moreover, the relatively large weight of the battery 26 lowers the overall center of gravity of the integrated device box 101, making the operation more stable and less prone to tilting or displacement.

[0031] The specific dimensions of the integrated device box 101 can be set as follows: the base 7 is 300mm × 350mm; the first mounting plate 6 is fixed at 300mm, that is, the first mounting plate 6 divides the length of the base 7 into 300mm and 50mm sections; the height of the rear cover 5 is 280mm; the second mounting plate 8 is fixed at 200mm, and the distance between the second mounting plate 8 and the base 7 is 200mm. The dimensions of the second mounting plate 8 are 295mm × 300mm. Here, 300mm corresponds to 300mm in the length direction of the first mounting plate 6, and 295mm corresponds to 300mm in the width direction of the base 7. It is slightly smaller than the width of the base 7, making installation more convenient and avoiding jamming. The dimensions of the first mounting plate 6 are 300mm × 275mm. Here, 300mm corresponds to 300mm in the width direction of the base 7, and the height is 275mm. The second mounting plate 8 only needs to be connected to the rear cover 5. The first mounting plate 6 is also provided with a mounting cavity 14, which is used to mount the touch screen. The dimensions of the mounting cavity 14 are 120mm × 95mm, and the bottom edge of the mounting cavity 14 is 750mm away from the base.

[0032] In some embodiments, the electrical components include a motherboard 23 (including a central controller and a memory card) and a solar controller 22, a voltage detector 25, and a DC voltage regulator 24 fixedly mounted on the motherboard 23. The motherboard 23 is detachably mounted on the second mounting plate 8. The solar controller 22 is provided with a charging input port, a battery port, and an output port. The charging input port is electrically connected to the charging cable of the solar panel 102, the battery port is electrically connected to the battery 26, and the output port is electrically connected to the motherboard 23. The voltage detector 25, the DC voltage regulator 24, and the touch screen are electrically connected to the motherboard 23. The negative terminal of the output of the DC voltage regulator 24 is electrically connected to the protected metal 103, and the positive terminal of the output of the DC voltage regulator 24 is electrically connected to the auxiliary anode 105. The voltage detector 25 is electrically connected to the protected metal 103. The electrical components include a main board 23, a solar controller 22, a voltage detector 25, and a DC voltage regulator 24. Each component has a clearly defined function and forms a complete control closed loop: the solar controller 22 is responsible for managing solar charging and the charging and discharging of the battery 26 to ensure a stable energy supply; the voltage detector 25 monitors the voltage status between the protected metal 103 and the auxiliary anode 105 in real time, providing data for regulation; the DC voltage regulator 24 outputs an adaptive current according to the instructions of the main board 23 to achieve precise control of the photocathode protection device; the main board 23 acts as the central hub, integrating the signals of each component and linking with the touch screen to achieve intelligent operation.

[0033] The solar controller 22 connects directly to the charging cable of the solar panel 102 via its charging input port. It can automatically adjust the charging mode according to the power generation characteristics of the solar panel 102, maximizing the utilization of solar energy resources, making it particularly suitable for outdoor off-grid scenarios. The battery port of the solar controller 22 is precisely matched to the battery 26, allowing it to switch between charging and discharging states based on the battery's charge level. This prevents over-discharging and over-charging from causing battery life degradation and extends the service life of the core energy storage components. The voltage detector 25 is directly connected to the protected metal 103, providing real-time feedback on its voltage status. After receiving the detection data, the main board 23 dynamically adjusts the output current (positive terminal connected to the auxiliary anode 105, negative terminal connected to the protected metal 103) via the DC voltage regulator 24, ensuring that the protected metal 103 is always at the optimal protection potential and improving the working accuracy of the photoelectric cathodic protection device. It should be noted that the main board 23 can also be used directly as a second mounting plate 8.

[0034] It should be noted that the solar panel 102 is a polycrystalline silicon solar panel, which has good stability, strong environmental adaptability, high photoelectric conversion efficiency, and low price. The daily power consumption of the protected metal 103 can be estimated based on the type of metal, exposed area, corrosive environment, and local climate. The size of the solar panel 102 is determined based on the fact that even in winter when the sunshine duration is short, the power generation can meet the cathodic protection needs and still have a certain percentage of surplus. The size of the battery 26 needs to meet the power requirements of cathodic protection under local conditions of continuous rain and insufficient sunlight. The solar panel 102 and the integrated device box 101 are mounted on a bracket. The solar panel 102 is angled towards the sun according to the installation area to maximize the annual photoelectric conversion efficiency.

[0035] In some embodiments, the upper part of the rear cover 5 is provided with a charging cable hole 10, which is used for the first conductor 15 to pass through. The two ends of the first conductor 15 are electrically connected to the output end of the solar panel 102 and the charging input port of the solar controller 22, respectively. The main board 23 is provided with a through hole 9, through which the connection wires of the solar controller 22 and the battery 26 pass. The lower part of the rear cover 5 is provided with multiple wire holes 11, which are used for the passage of conductor groups. The upper charging cable hole 10 is specifically used for the solar charging cable (first conductor 15) to pass through, thus separating the energy input line independently. The multiple wire holes 11 at the bottom are used for other conductor groups (such as the lines connecting the battery 26, the protected metal 103, the auxiliary anode 105, and the voltage detector 25) to pass through, realizing the physical separation of energy lines and signal / control lines. The partitioned wiring method avoids the tangling and crossing of different functional lines. During subsequent maintenance, the purpose of the line can be quickly identified (e.g., the upper hole corresponds to the solar input, and the lower hole corresponds to the device connection), reducing the risk of misoperation caused by line confusion.

[0036] In some embodiments, the lead wire group includes a second lead wire 16, a third lead wire 17, a fourth lead wire 18, and a fifth lead wire 19. The two ends of the second lead wire 16 are electrically connected to the protected metal 103 and the negative output terminal of the DC voltage regulator 24, respectively. The two ends of the third lead wire 17 are electrically connected to the auxiliary anode 105 and the positive output terminal of the DC voltage regulator 24, respectively. The two ends of the fourth lead wire 18 are electrically connected to one output port of the voltage detector 25 and the reference electrode 104, respectively. The two ends of the fifth lead wire 19 are electrically connected to the other output port of the voltage detector 25 and the protected metal 103, respectively.

[0037] The second conductor 16 is dedicated to connecting the protected metal 103 to the negative terminal of the DC voltage regulator 24 output. It is the core pathway for realizing cathodic protection. The protective current output by the DC voltage regulator 24 flows to the protected metal 103 through this conductor, putting it in a protected potential state and ensuring the direct execution of the protection function.

[0038] The third wire 17 connects the auxiliary anode 105 to the positive output terminal of the DC voltage regulator 24, forming a current loop with the second wire 16. The auxiliary anode 105 serves as the source of current output, receiving the current output from the voltage regulator through this wire. Together with the second wire 16, it completes the electrochemical protection of the protected metal 103, forming a transmission path for the protective current.

[0039] The fourth wire 18 connects the voltage detector 25 to the reference electrode 104. The reference electrode 104 is used to provide a stable reference potential. The voltage detector 25 obtains the reference signal of the reference electrode 104 through this wire, providing a reference for accurately detecting the actual potential of the protected metal 103 and ensuring the accuracy of the detection data.

[0040] The fifth wire 19 is directly connected to the voltage detector 25 and the protected metal 103, enabling the voltage detector 25 to acquire the potential signal of the protected metal 103 in real time. Combined with the reference signal from the reference electrode 104 transmitted through the fourth wire 18, the true protection potential of the protected metal 103 can be calculated, providing a crucial basis for the motherboard 23 to regulate the DC voltage regulator 24. It should be noted that multiple fifth wires 19 can be provided to monitor the voltage at different locations on the protected metal 103.

[0041] In some embodiments, the integrated device box 101 further includes an output voltage measuring device, and the wire group further includes a sixth wire 20 and a seventh wire 21. The two ends of the sixth wire 20 are electrically connected to the output voltage measuring device and the protected metal 103, respectively, and the two ends of the seventh wire 21 are electrically connected to the output voltage measuring device and the auxiliary anode 105, respectively. The output voltage measuring device is used to measure the voltage supplied to the auxiliary anode 105 and the protected metal 103. The output voltage measuring device directly measures the actual voltage supplied by the DC voltage regulator 24 to the protected metal 103 (negative circuit) and the auxiliary anode 105 (positive circuit) through the sixth wire 20 and the seventh wire 21. This voltage reflects the core parameter of the photocathode protection device's operating status. Whether the voltage is stable and within the preset protection range directly determines the output effect of the protection current and the potential state of the protected metal 103. At the same time, this value can be displayed on the touch screen, and the operator can adjust it according to the displayed value and the required value. The detection signals and output signals of multiple lines can be transmitted to the central controller on the motherboard 23. The touch screen and the central controller are electrically connected, and the output signals of the central controller can be operated by operating the touch screen.

[0042] In some embodiments, the base 7 is provided with a positioning slot 13 for engaging the battery 26. The size of the positioning slot 13 matches the battery 26, and the battery 26 is fixed in a specific position on the base 7 through a physical engaging structure, preventing the battery 26 from sliding or shifting during handling, vibration (such as wind in outdoor environments or vibration during equipment operation), or tilting. In particular, since the battery 26 is relatively heavy, displacement may cause it to collide with other components (such as the second mounting plate 8 or electrical component connection wires). The positioning slot 13 can effectively prevent such potential hazards and ensure the safety of internal components.

[0043] In some embodiments, aviation plugs are fixedly provided at the charging cable hole 10 and multiple through holes 11, and the ends of the first conductor 15 and the conductor group away from the solar controller 22 are fixedly connected to aviation plugs. After connection, the aviation plugs can withstand strong vibrations and shocks, making them particularly suitable for outdoor environments. They prevent the conductors from coming loose due to external pulling, ensuring the continuous and stable operation of the system in dynamic environments. During installation, simply align the aviation plug at the end of the conductor with the aviation plug at the through hole 11, insert it, and lock it in place to complete the connection. When inspecting or replacing components, the reverse operation allows for quick disconnection of the lines without having to tighten screws one by one or peel off the insulation layer, significantly shortening installation and disassembly time. This is especially suitable for outdoor field operations or batch equipment deployment. The outer shell and interface of aviation plugs are usually sealed with rubber sealing rings and other sealing structures to achieve a high protection level (such as IP65, IP67). This can effectively prevent external dust, moisture, oil and other contaminants from entering the wiring hole 11 and avoid them from corroding the electrical components (such as the motherboard 23 and solar controller 22) inside the box. Especially in humid and dusty outdoor environments, it can significantly improve the weather resistance of the equipment.

[0044] In some embodiments, the switch door 3 is a swing door and is equipped with a lock 4. The swing door is connected to the side panel 1 via hinges. It can be opened simply by rotating outwards or inwards, making the operation path simple and direct. Compared with designs such as sliding doors, there is no need to reserve space for lateral sliding. Especially in scenarios where the installation space of the device box is limited (such as against a wall or close to other equipment), it can still be opened easily, making it convenient for operators to operate the touch screen or quickly check the internal status through the switch door 3. Equipped with a lock 4, it can effectively prevent unauthorized personnel from opening the switch door 3 at will, avoiding accidental contact, disassembly or damage to the internal precision electrical components (such as the motherboard 23 and the solar controller 22). Especially in outdoor unattended scenarios, it can reduce the risk of equipment theft or malicious damage. At the same time, when the lock 4 is closed, it can ensure that the switch door 3 fits tightly with the box, reducing the possibility of the door loosening due to accidental collisions and protecting the internal structure from rainwater erosion.

[0045] In some embodiments, a support plate 12 is also fixedly provided on the rear cover 5. The support plate 12 is perpendicular to and fixedly connected to the rear cover 5, preferably by welding or integral molding. The second mounting plate 8 is detachably connected to the support plate 12, specifically by screw connection. The addition of the support plate 12 provides an additional support point for the second mounting plate 8, improving the stability of the installation.

[0046] In summary, it should also be noted that all detachable connections in this embodiment can be made using screws. For example, the side plate 1 is screwed to the base 7, the first mounting plate 6 is screwed to the base 7, the rear cover 5 is screwed to the base 7, and the DC voltage regulator 24, voltage detector 25, output voltage measuring device and main board 23 can all be connected by screws.

[0047] Example 2

[0048] like Figure 7 As shown, this embodiment also provides a photoelectric cathode protection device, including a solar panel 102, a protected metal 103, a reference electrode 104, an auxiliary anode 105, and an integrated device box 101 as in Embodiment 1. The solar panel 102 is electrically connected to the integrated device box 101, and the integrated device box 101 is electrically connected to the protected metal 103, the reference electrode 104, and the auxiliary anode 105.

[0049] Example 3

[0050] This embodiment is a simulation experiment. In simulated seawater with 3.5 w% NaCl, the sample was Q235 steel (surface area 36 square centimeters, the remainder encapsulated in epoxy resin). The solar cathodic protection device provided by this invention was used to provide cathodic protection to the metal. The solar panel was installed outdoors where it could be directly exposed to sunlight and connected to the device box via wires. The device box was placed indoors. Without an external power supply, the cathodic protection device could operate stably for more than 3 months. According to the DC transformer setting, the surface potential of the Q235 sample could be freely adjusted between -0.85V (SCE) and -1.25V (SCE). Under cathodic protection with a set protection potential of -1.0V, the Q235 sample showed no significant corrosion after one month, and its weight remained stable. In contrast, a sample weighing 117.3g without cathodic protection lost 0.77g after one month, approximately 0.66% of its original weight. This demonstrates that the device can provide cathodic protection to metals without an external power supply, requiring only sunlight.

[0051] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. An integrated device box, characterized in that: The device includes a housing, a first mounting plate, and a second mounting plate. The housing includes a base, a rear cover, a switch door, two side panels, and a top plate. The top plate is fixedly connected to the top of the two side panels, and the bottom of the two side panels is detachably connected to the base. The rear cover is detachably connected to the base and covers one end of the two side panels. The switch door covers the other end of the two side panels and can be opened and closed. The first mounting plate is detachably connected to the base and is disposed between the rear cover and the switch door, parallel to the rear cover. The first mounting plate is used to mount a touch screen. The second mounting plate is detachably connected to the rear cover and the first mounting plate. The top surface of the second mounting plate is used to mount electrical components for controlling the operation of a photocathode protection device. A battery is detachably mounted on the base and located between the base and the second mounting plate.

2. The integrated device box according to claim 1, characterized in that: The electrical components include a main board and a solar controller, a voltage detector, and a DC voltage regulator fixedly mounted on the main board. The main board is detachably mounted on the second mounting plate. The solar controller has a charging input port, a battery port, and an output port. The charging input port is electrically connected to the charging cable of the solar panel. The battery port is electrically connected to the battery. The output port is electrically connected to the main board. The voltage detector, the DC voltage regulator, and the touch screen are electrically connected to the main board. The negative terminal of the DC voltage regulator's output is electrically connected to the protected metal, and the positive terminal of the DC voltage regulator's output is electrically connected to the auxiliary anode. The voltage detector is electrically connected to the protected metal.

3. The integrated device box according to claim 2, characterized in that: The upper part of the back cover is provided with a charging cable hole for a first wire to pass through. The two ends of the first wire are electrically connected to the output end of the solar panel and the charging input port of the solar controller, respectively. The lower part of the back cover is provided with multiple wire holes for wire groups to pass through.

4. The integrated device housing according to claim 3, characterized in that: The conductor group includes a second conductor, a third conductor, a fourth conductor, and a fifth conductor. The two ends of the second conductor are electrically connected to the protected metal and the negative output terminal of the DC voltage regulator, respectively. The two ends of the third conductor are electrically connected to the auxiliary anode and the positive output terminal of the DC voltage regulator, respectively. The two ends of the fourth conductor are electrically connected to one output port of the voltage detector and the reference electrode, respectively. The two ends of the fifth conductor are electrically connected to the other output port of the voltage detector and the protected metal, respectively.

5. The integrated device housing according to claim 3, characterized in that: It also includes an output voltage measuring device, and the lead wire group further includes a sixth lead wire and a seventh lead wire. The two ends of the sixth lead wire are electrically connected to the output voltage measuring device and the protected metal, respectively, and the two ends of the seventh lead wire are electrically connected to the output voltage measuring device and the auxiliary anode, respectively. The output voltage measuring device is used to measure the voltage supplied to the auxiliary anode and the protected metal.

6. The integrated device box according to claim 1, characterized in that: The base is provided with a positioning slot, which is used to engage the battery.

7. The integrated device housing according to claim 3, characterized in that: An aviation plug is fixedly provided at each of the charging cable holes and the plurality of wire holes, and the first wire and the end of the wire group away from the solar controller are both fixedly connected to the aviation plug.

8. The integrated device box according to claim 1, characterized in that: The door is a swing door.

9. The integrated device box according to claim 1, characterized in that: A support plate is also fixedly provided on the rear cover. The support plate is perpendicular to the rear cover and fixedly connected. The second mounting plate is detachably connected to the support plate.

10. A photoelectric cathode protection device, characterized in that: It includes a solar panel, a protected metal, a reference electrode, an auxiliary anode, and an integrated device box as described in any one of claims 1-9, wherein the solar panel is electrically connected to the integrated device box, and the integrated device box is electrically connected to the protected metal, the reference electrode, and the auxiliary anode.

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