Modular electrical box structure and air conditioner

Abstract

The application relates to the technical field of electric appliance boxes, and relates to a modular electric appliance box structure and an air conditioner. The modular electric appliance box structure comprises a PCB box, and further comprises a relay box and / or a wiring terminal box. When the relay box is included, the modular electric appliance box structure further comprises a first connecting line, the first connecting line is used for connecting the PCB box and the relay box, and the PCB box is connected with a first load through the relay box; when the wiring terminal box is included, the modular electric appliance box structure further comprises a second connecting line, the second connecting line is used for connecting the PCB box and the wiring terminal box, and the PCB box is connected with a second load through the wiring terminal box. According to the technical scheme of the application, various defects caused by the integrated mode of the existing electric appliance boxes can be overcome, such as the difficulty in carrying caused by the single large volume, the safety hidden danger caused by the concentrated wiring near the electric appliance box, the damage to other components in the same space during maintenance and the like.

Description

Technical Field

[0001] This invention relates to the field of electrical box technology, and in particular to a modular electrical box structure and an air conditioner. Background Technology

[0002] Most existing electrical boxes are integrated boxes. In these boxes, the PCB board, terminals, relays, circuit breakers and other components are in the same space. Because wiring requires a lot of space between the components, the internal space of the electrical box is not fully utilized, resulting in a large amount of space occupied by the air conditioning unit. Moreover, they are relatively heavy and inconvenient to install and move.

[0003] In addition, most existing electrical boxes have centralized wiring, with circuits connected from various parts of the unit to the electrical box. This results in excessive concentration of circuitry within the electrical box, and some circuits are directly connected to the PCB board. Improper operation or static electricity during installation and maintenance can damage the circuit board. Furthermore, with traditional integrated electrical boxes, removing the box cover during installation and maintenance exposes all components to the air, increasing the risk of dust damage to the components. Summary of the Invention

[0004] In view of this, the present invention provides a modular electrical box structure and an air conditioner. The main technical problem to be solved is to overcome the various defects brought about by the existing integrated electrical box, such as the large single volume leading to difficulty in transportation, the excessive concentration of wiring near the electrical box posing a safety hazard, and the easy damage to other components in the same space during maintenance.

[0005] To achieve the above objectives, the present invention mainly provides the following technical solutions:

[0006] In a first aspect, embodiments of the present invention provide a modular electrical box structure, which includes a PCB board box, and the modular electrical box structure further includes a relay box and / or a terminal block box;

[0007] When the modular electrical box structure includes a relay box, the modular electrical box structure also includes a first connecting line, which is used to connect the PCB board box and the relay box, so that the PCB board box is connected to the first load through the relay box.

[0008] When the modular electrical box structure includes a terminal block, the modular electrical box structure also includes a second connecting line, which is used to connect the PCB board box and the terminal block, so that the PCB board box is connected to the second load through the terminal block.

[0009] In some embodiments, the modular electrical box structure further includes a hub;

[0010] The first connecting line includes a first A connecting line and a first B connecting line. The first A connecting line is used to connect the PCB board box and the hub, and the first B connecting line is used to connect the hub and the relay box. The first A connecting line and the first B connecting line cooperate to connect the PCB board box to the relay box through the hub.

[0011] And / or, the second connecting line includes a second A connecting line and a second B connecting line, the second A connecting line being used to connect the PCB board box and the hub, the second B connecting line being used to connect the hub and the terminal box, the second A connecting line and the second B connecting line cooperating to connect the PCB board box to the terminal box through the hub.

[0012] In some implementations, the first A connection line is detachably connected to the PCB box and / or hub;

[0013] And / or, the first B connection line is detachably connected to the hub and / or relay box;

[0014] And / or, the second A connection line is detachably connected to the PCB box and / or hub;

[0015] And / or, the second B connection line is detachably connected to the hub and / or terminal box.

[0016] In some embodiments, the PCB box, relay box, terminal box, and hub are each used to be installed in different locations.

[0017] And / or, the number of PCB boxes is two or more, each PCB box is used to control different loads, and each PCB box is used to connect to a hub to connect to a relay box and / or a terminal box via the hub;

[0018] And / or, the number of relay boxes is two or more, the number of first loads is equal to the number of relay boxes, each relay box is used to connect to the hub, and the hub is connected to each corresponding first load through each relay box in a one-to-one correspondence.

[0019] And / or, the number of terminal boxes is two or more, the number of second loads is equal to the number of terminal boxes, each terminal box is used to connect to the hub, and the hub is connected to each corresponding second load through each terminal box.

[0020] In some embodiments, the modular electrical box structure further includes a temperature sensor and a first controller;

[0021] The temperature sensor is used to detect the temperature inside the PCB box;

[0022] The PCB box is equipped with a cooling pipe for supplying coolant to flow inside in order to cool the PCB box. The cooling pipe is equipped with a valve.

[0023] The first controller is used to control the opening amount of the valve according to the temperature inside the PCB box.

[0024] In some implementations, when the temperature inside the PCB box exceeds a set temperature value, the first controller controls the valve to increase its opening amount.

[0025] When the temperature inside the PCB box is lower than the set temperature value, the first controller controls the valve to reduce the opening amount.

[0026] In some embodiments, the modular electrical box structure further includes a voltage detection device and a second controller;

[0027] The voltage detection device is used to detect the voltage on the PCB board inside the PCB box;

[0028] The second controller is used to cut off the power supply to the unit when an abnormal voltage occurs on the PCB board.

[0029] In some implementations, when the voltage on the PCB board is higher than a first set voltage, the second controller cuts off the power supply to the unit;

[0030] When the voltage on the PCB board is lower than the second set voltage, the second controller cuts off the power supply to the unit, wherein the second set voltage is less than the first set voltage.

[0031] In some embodiments, the modular electrical box structure also includes an alarm device;

[0032] The second controller is used to control the alarm device to execute an alarm response when an abnormal voltage occurs on the PCB board.

[0033] Secondly, embodiments of the present invention also provide an air conditioner that may include any of the modular electrical box structures described above.

[0034] By employing the above technical solutions, the modular electrical box structure and air conditioner of the present invention have at least the following beneficial effects:

[0035] 1. Compared to the large, single-unit integrated electrical box of traditional designs, this invention breaks down the original integrated electrical box into smaller electrical box modules such as PCB board boxes, relay boxes, and terminal block boxes, based on different components. This effectively reduces the size and weight of each electrical box, making it easier to transport, install, and maintain. Arranging the electrical boxes according to actual needs effectively solves the problem of space occupancy.

[0036] 2. This invention modularizes the existing integrated electrical box into PCB board boxes, relay boxes, terminal boxes, etc., which can distribute the circuits originally connected to the integrated electrical box to different small electrical box modules. This avoids a large number of circuits being connected to the same electrical box, and reduces the number of lines at each small electrical box module, thereby reducing safety hazards.

[0037] 3. When a certain electrical box module in the PCB board box, relay box, and terminal box is damaged and needs repair, only the corresponding electrical box module needs to be opened. The other electrical boxes do not need to be opened, which can reduce the wear and damage to components caused by dust, static electricity, and other factors.

[0038] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art 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 the structures shown in these drawings without creative effort.

[0040] Figure 1 This is a schematic diagram of a modular electrical box structure provided in an embodiment of the present invention;

[0041] Figure 2 This is a schematic diagram of another modular electrical box structure;

[0042] Figure 3 This is a schematic diagram showing the individual electrical box modules within a modular electrical box structure installed separately.

[0043] Figure 4 This is a schematic diagram showing the centralized installation of various electrical box modules within a modular electrical box structure.

[0044] Figure 5 This is a flowchart of valve control;

[0045] Figure 6 This is the control flowchart of the voltage detection device;

[0046] Figure 7 This is a structural diagram of the PCB board box;

[0047] Figure 8 This is a structural diagram of the relay box;

[0048] Figure 9 This is a structural diagram of a terminal box.

[0049] Reference numerals: 1. Box; 2. Temperature sensor; 3. Sensor bracket; 4. Mounting bracket; 6. Fault warning light; 7. Voltage detection device; 8. Valve; 10. Cooling pipe; 11. PCB mounting plate; 12. Radiator cold plate; 13. Radiator pressure plate; 14. Wire harness connector; 15. Guide rail; 16. Terminal block; 18. Relay; 20. Terminal block; 22. Air conditioning unit; 24. First connecting wire; 25. Second connecting wire; 241. First A connecting wire; 242. First B connecting wire; 251. Second A connecting wire; 252. Second B connecting wire; 100. PCB board box; 200. Relay box; 300. Terminal box; 400. Hub. Detailed Implementation

[0050] 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 a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0051] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0052] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0053] like Figure 1 As shown, one embodiment of the present invention proposes a modular electrical box structure, which includes a PCB board box 100. The modular electrical box structure may further include a relay box 200 and / or a terminal block box 300.

[0054] When the modular electrical box includes a relay box 200, it also includes a first connecting line 24. The first connecting line 24 connects the PCB board box 100 and the relay box 200, allowing the PCB board box 100 to be connected to a first load via the relay box 200. The PCB board box 100 contains a PCB board, and the relay box 200 contains a relay 18. The connection between the PCB board box 100 and the relay box 200 means that the PCB board in the PCB board box 100 is connected to the relay 18 in the relay box 200. Similarly, the connection between the relay box 200 and the first load means that the relay 18 in the relay box 200 is connected to the first load.

[0055] When the modular electrical box structure includes a terminal block box 300, it also includes a second connecting line 25. The second connecting line 25 connects the PCB board box 100 and the terminal block box 300, allowing the PCB board box 100 to be connected to a second load via the terminal block box 300. The terminal block box 300 contains terminals. The connection between the PCB board box 100 and the terminal block box 300 means that the PCB board inside the PCB board box 100 is connected to the terminals inside the terminal block box 300. Similarly, the connection between the terminal block box 300 and the second load means that the terminals inside the terminal block box 300 are connected to the second load.

[0056] In the above example, compared to the large single volume of traditional integrated electrical boxes, this invention disassembles the original integrated electrical box into different smaller electrical box modules such as PCB board box 100, relay box 200, and terminal block box 300, effectively reducing the size and weight of each electrical box, thus facilitating transportation, initial installation, and subsequent maintenance. Arranging the electrical boxes in a certain way according to actual needs can effectively solve the problem of space occupation.

[0057] In addition, by modularizing the existing integrated electrical box into PCB board box 100, relay box 200, terminal box 300, etc., the circuits originally connected to the integrated electrical box can be distributed to different small electrical box modules. This avoids a large number of circuits being connected to the same electrical box, and reduces the number of lines at each small electrical box module, thereby reducing safety hazards.

[0058] In addition, when one of the electrical box modules in the PCB box 100, relay box 200 and terminal box 300 is damaged and needs to be repaired, only the corresponding electrical box module needs to be opened, and the other electrical boxes do not need to be opened. This can reduce the wear and damage to components caused by dust, static electricity and other factors.

[0059] like Figure 2As shown, the modular electrical box structure of the present invention may further include a hub 400. The first connecting line 24 includes a first A connecting line 241 and a first B connecting line 242. The first A connecting line 241 is used to connect the PCB board box 100 and the hub 400. The first B connecting line 242 is used to connect the hub 400 and the relay box 200. The first A connecting line 241 and the first B connecting line 242 cooperate to connect the PCB board box 100 to the relay box 200 through the hub 400. The aforementioned second connecting line 25 includes a second A connecting line 251 and a second B connecting line 252. The second A connecting line 251 is used to connect the PCB board box 100 and the hub 400, and the second B connecting line 252 is used to connect the hub 400 and the terminal box 300. The second A connecting line 251 and the second B connecting line 252 cooperate to connect the PCB board box 100 to the terminal box 300 through the hub 400.

[0060] In the above example, the hub 400 acts as an intermediate transfer. After the PCB box 100 is connected to the hub 400, the hub 400 then branches to the relay box 200 and / or the terminal box 300. Thus, when it is necessary to remove the relay box 200 or the terminal box 300 from the modular electrical box structure of the present invention for repair or replacement, it is only necessary to disconnect the connection between the relay box 200 or the terminal box 300 and the hub 400. Compared with the structure that directly connects the relay box 200 and the terminal box 300 to the PCB box 100, the above example does not require operation on the PCB box 100, thereby reducing disturbance to the PCB box 100 and reducing the wear and damage to the components inside the PCB box 100 caused by dust, static electricity and other factors.

[0061] In a specific application example, the aforementioned first A connecting cable 241 is detachably connected to the PCB box 100 and / or the hub 400, which has the advantage of facilitating the disassembly of the PCB box 100 and / or the hub 400. Preferably, the first A connecting cable 241 and the PCB box 100 and / or the hub 400 can be detachably connected via the wire harness connector 14.

[0062] The aforementioned second A connecting cable 251 is detachably connected to the PCB box 100 and / or the hub 400, which has the advantage of facilitating the disassembly of the PCB box 100 and / or the hub 400. Preferably, the second A connecting cable 251 and the PCB box 100 and / or the hub 400 can also be detachably connected via the wire harness connector 14.

[0063] It should be noted that the first A connection line 241 and the second A connection line 251 mentioned above can be integrated on the bus and connected to the PCB board box 100 through the same wire harness connector 14, and connected to the hub 400 through the same wire harness connector 14.

[0064] The aforementioned first B connecting cable 242 is detachably connected to the hub 400 and / or relay box 200, which has the advantage of facilitating the disassembly of the hub 400 and / or relay box 200. Preferably, the first B connecting cable 242 can also be detachably connected to the hub 400 and / or relay box 200 via the wire harness connector 14.

[0065] The aforementioned second B connecting cable 252 is detachably connected to the hub 400 and / or the terminal box 300, which has the advantage of facilitating the disassembly of the hub 400 and / or the terminal box 300. Preferably, the second B connecting cable 252 can also be detachably connected to the hub 400 and / or the terminal box 300 via the wire harness connector 14.

[0066] It should be noted that the traces on the aforementioned PCB board box 100 can be divided into three parts: power lines, bus lines, and ground lines. The bus lines can be connected to the hub 400 through the wire harness connector 14, and then the hub 400 can be branched to other functional electrical boxes such as the relay box 200 and the terminal box 300.

[0067] In a specific application example, such as Figure 3 As shown, the PCB box 100, relay box 200, terminal box 300 and hub 400 are each used to be installed in different locations. In this way, the installation position of each small electrical box module can be selected according to the actual situation, so as to make full use of the unit space.

[0068] Of course, such as Figure 4 As shown, the PCB board box 100, relay box 200, terminal box 300 and hub 400 can also be installed together. This can be determined according to the actual situation, with the aim of making full use of the unit space.

[0069] The PCB box 100, relay box 200, terminal box 300 and hub 400 mentioned above can be combined in any way to meet the control requirements of different models.

[0070] In a specific application example, there may be more than two PCB boxes 100, each PCB box 100 is used to control different loads. Each PCB box 100 is used to connect to a hub 400, so as to connect to a relay box 200 and / or a terminal box 300 through the hub 400.

[0071] In the above example, by setting multiple PCB boxes 100 to control different loads respectively, the existing integrated electrical box can be further decomposed, which is conducive to further improving its modularity, further reducing the volume of a single electrical box, further reducing the wiring at a single PCB box 100, and further reducing the interference to other components when maintaining the PCB box 100.

[0072] Depending on different needs, different PCB board boxes 100 with different functions can be combined, and the number of PCB board boxes 100 can be increased or decreased.

[0073] The number of the aforementioned relay boxes 200 can be two or more, and the number of the aforementioned first loads is equal to the number of relay boxes 200. Each relay box 200 is used to connect to the hub 400. The hub 400 is connected to each corresponding first load through each relay box 200. This allows for further decomposition of the existing integrated electrical box, which is beneficial to further improve its modularity.

[0074] The number of the aforementioned terminal boxes 300 can be two or more, and the number of the aforementioned second loads is equal to the number of terminal boxes 300. Each terminal box 300 is used to connect to the hub 400. The hub 400 is connected to each corresponding second load through each terminal box 300. This allows for further decomposition of the existing integrated electrical box, which is beneficial for further improving its modularity.

[0075] It should be noted that, depending on the actual situation, relay 18 can be added to relay box 200, or relay box 200 can be added entirely. Similarly, terminal box 300 can be modified by adding terminals to terminal box 300, or terminal box 300 can be added entirely.

[0076] like Figure 7 As shown, the modular electrical box structure of the present invention may further include a temperature sensor 2 and a first controller. The temperature sensor 2 is used to detect the temperature inside the PCB box 100. A cooling pipe 10 is provided on the PCB box 100, which is used to supply coolant to flow inside, thereby cooling the PCB box 100. A valve 8 is provided on the cooling pipe 10. The first controller is used to control the opening amount of the valve 8 according to the temperature inside the PCB box 100. Figure 5 A flowchart illustrating valve control is provided. When the temperature inside the PCB box 100 exceeds a set temperature value, the first controller controls valve 8 to increase its opening amount. When the temperature inside the PCB box 100 is below the set temperature value, the first controller controls valve 8 to decrease its opening amount. When the temperature inside the PCB box 100 equals the set temperature value, the first controller controls valve 8 to maintain its current opening amount.

[0077] In the above example, valve 8 can be a shut-off valve, the coolant can be refrigerant, and the cooling pipe 10 can pass through the PCB box 100. When the refrigerant flows through the PCB box 100 via the cooling pipe 10, it can cool the inside of the PCB box 100. The first controller can control the opening degree of valve 8 according to the temperature inside the PCB box 100, so that the inside of the PCB box 100 can always maintain a constant temperature. This helps improve the working environment of the PCB board and prevents excessively high temperatures inside the PCB box 100 from affecting the performance and lifespan of the PCB board.

[0078] The modular electrical box structure of the present invention may further include a voltage detection device 7 and a second controller. The voltage detection device 7 is used to detect the voltage on the PCB board inside the PCB board box 100. The second controller is used to cut off the power supply to the unit when an abnormal voltage occurs on the PCB board. Figure 6 A control flowchart of a voltage detection device 7 is shown. When the voltage on the PCB board is higher than a first set voltage, the second controller cuts off the power supply to the unit. When the voltage on the PCB board is lower than a second set voltage, the second controller cuts off the power supply to the unit, wherein the second set voltage is lower than the first set voltage.

[0079] It should be noted that the specific structure of the voltage detection device 7 described above is existing technology and will not be elaborated further here. When the modular electrical box structure of the present invention is applied to an air conditioner, the aforementioned unit power supply is used to supply power to the air conditioning unit 22.

[0080] In the example above, the unit power supply is automatically cut off when an abnormal voltage is detected on the PCB board, which can prevent the air conditioner from being damaged due to overload or idling.

[0081] Furthermore, the aforementioned modular electrical box structure may also include an alarm device. The aforementioned second controller is used to control the alarm device to execute an alarm response when an abnormal voltage occurs on the PCB board, in order to remind the user. An abnormal voltage on the PCB board refers to a voltage on the PCB board that is higher than a first preset voltage, or a voltage on the PCB board that is lower than a second preset voltage.

[0082] The first controller and the second controller mentioned above can be the same controller, which can be a PLC or a processor, etc.

[0083] In a specific application example, the alarm device mentioned above can be a fault warning light 6, which will light up when an abnormal voltage occurs on the PCB board.

[0084] Embodiments of the present invention also propose an air conditioner that may include any of the modular electrical box structures described above. Because the air conditioner incorporates the aforementioned modular electrical box structure, it overcomes various drawbacks associated with the existing integrated electrical box design, such as large size leading to difficulties in transportation, excessively concentrated wiring near the electrical box posing safety hazards, and the potential for damage to other components within the same space during maintenance.

[0085] The working principle and preferred embodiments of the present invention are described below.

[0086] This invention relates to the design of a modular electrical box structure, which can be applied to air conditioners. By disassembling the existing integrated electrical box into independent modules such as a PCB board box 100, a relay box 200, a terminal block box 300, and a hub 400, weight reduction, reduced maintenance difficulty, and space saving are achieved. The modules are detachable and flexiblely connected using wire harness connectors 14. The PCB board box 100 is equipped with a temperature sensor 2 to detect the internal temperature and a voltage detection device 7 to detect the voltage on the PCB board. If an abnormal voltage is detected on the PCB board, an automatic alarm is triggered, and the power supply to the air conditioner unit is shut off to prevent damage to the air conditioner unit 22 due to overload or idling.

[0087] like Figure 7As shown, the PCB box 100 includes a box body 1, in which a PCB board is installed. The PCB board is fixed to the box body 1 by a PCB fixing plate 11. The box body 1 is provided with mounting brackets 4. Multiple mounting brackets 4 can be provided and distributed around the box body 1, and the box body 1 is fixed in place by the mounting brackets 4. A temperature sensor 2 is installed inside the box body 1, and a sensor bracket 3 is provided inside the box body 1 to support the temperature sensor 2. A voltage detection device 7 is installed on the box body 1 and is used to detect the voltage on the PCB board. The box body 1 is also provided with a fault warning light 6, which illuminates when the voltage on the PCB board is abnormal. The box body 1 is also provided with a cooling pipe 10, which passes through the box body 1 and is used to supply refrigerant for internal flow. The cooling pipe 10 is provided with a valve 8, which can be a throttling valve. The box body 1 is also provided with a heat sink 12, which is used to contact heat sources inside the box body 1, such as control chips on the PCB board, to assist in heat dissipation. The housing 1 also includes a heatsink pressure plate 13 for securing the heatsink cold plate 12. The housing 1 also features a wiring harness connector 14, which connects to the PCB board. The PCB board box 100 is detachably connected to the connecting wires via the wiring harness connector 14. One of the wiring harness connectors 14 can be a power interface for connecting to an external power source to supply power to the PCB board. The other wiring harness connector 14 can be a bus interface, through which the PCB board box 100 can connect to the hub 400.

[0088] like Figure 8 As shown, the aforementioned relay box 200 contains relays 18 and terminal blocks 16, and the number of relays 18 can be two or more. A guide rail 15 is provided inside the relay box 200, and both the relays 18 and the terminal blocks 16 are snapped onto the guide rail 15, allowing both to slide along the guide rail 15. Each relay 18 has a terminal block 16 on both sides, used to clamp and fix the middle relay 18, and each terminal block 16 is fixed inside the relay box 200 by screws. A wire harness connector 14 is provided on the relay box 200, allowing for detachable connection of the relay box 200 to a connecting wire.

[0089] like Figure 9 As shown, the aforementioned terminal box 300 contains a wiring board 20, which has wiring terminals. The terminal box 300 is equipped with a wire harness connector 14, and the terminal box 300 is detachably connected to the connecting wire via the wire harness connector 14.

[0090] This invention solves the following technical problems: 1. Traditional integrated electrical boxes are bulky and do not fully utilize the internal space, resulting in them occupying a large amount of space in the air conditioning unit 22. They are also relatively heavy, difficult to transport, and require disassembling the bulky box 1 for maintenance. When replacing damaged wiring, the excessive length of the wiring hinders future repairs. 2. In existing integrated electrical boxes, the air conditioning wiring is too concentrated near the box, posing safety hazards and causing wiring difficulties and low production efficiency during production. 3. In existing integrated electrical boxes, the PCB board is located in the same space as other components (such as terminals, relays, and circuit breakers). Whether during production, installation, or later maintenance, the PCB board is exposed after opening the box, making it susceptible to damage from dust and static electricity. 4. During installation, some wiring in existing integrated electrical boxes needs to be fixed to the PCB board with screws. Excessive force during installation and maintenance can cause pins to loosen, and the screwdriver can slip, damaging components on the PCB board. 5. Traditional integrated electrical boxes cannot monitor their internal conditions in real time, cannot prevent problems from occurring in the electrical box, and pose a risk of hardware damage due to overload.

[0091] The technical advantages of this invention are as follows: 1. Compared to the large size of traditional integrated electrical boxes, this invention breaks down the existing integrated electrical box into smaller electrical box modules such as PCB board box 100, relay box 200, terminal box 300, and hub 400, effectively reducing the size and weight of each individual small electrical box, thus facilitating initial installation and subsequent maintenance. These small electrical box modules can be arranged in a specific way according to actual needs, effectively solving the space occupation problem. 2. This invention proposes modularizing the electrical box (e.g., PCB board box 100, relay box 200, terminal box 300, etc.) to disperse the circuits connected to the electrical box, avoiding a large number of circuits being connected to the same electrical box. Simultaneously, the use of wire harness connectors 14 on the box body of each small electrical box module reduces the number of times the electrical box needs to be opened during production, installation, and subsequent maintenance. This effectively reduces direct human contact with the PCB board, lowering the risk of electrostatic discharge, and the relatively enclosed environment reduces dust damage to electrical components. Furthermore, the use of wire harness connectors 14 reduces the risk of PCB board damage due to improper operation. 3. The PCB board box 100 is equipped with a temperature sensor 2 and a voltage detection device 7. The temperature and humidity inside the PCB board box 100 can be precisely controlled by the feedback data from the temperature sensor 2 to ensure the environmental conditions for the operation of the PCB board. The voltage detection device 7 detects the operating status of the PCB board. If a fault occurs in the PCB board, an alarm will be automatically triggered and the unit will stop working to prevent the air conditioner from being damaged due to overload or idling.

[0092] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A modular electrical box structure, characterized in that, The modular electrical box structure includes a PCB board box (100), and also includes a relay box (200) and a terminal block box (300). The modular electrical box structure further includes a first connecting line (24), which is used to connect the PCB board box (100) and the relay box (200), so that the PCB board box (100) is connected to the first load through the relay box (200); the modular electrical box structure further includes a second connecting line (25), which is used to connect the PCB board box (100) and the terminal box (300), so that the PCB board box (100) is connected to the second load through the terminal box (300); The number of PCB boxes (100) is two or more, each PCB box (100) is used to control different loads, and each PCB box (100) is used to connect to a hub (400) so that the hub (400) can connect to a relay box (200) and a terminal box (300); the number of relay boxes (200) is two or more, the number of first loads is equal to the number of relay boxes (200), each relay box (200) is used to connect to the hub (400), and the hub (400) is connected to each corresponding first load through each relay box (200); the number of terminal boxes (300) is two or more, the number of second loads is equal to the number of terminal boxes (300), each terminal box (300) is used to connect to the hub (400), and the hub (400) is connected to each corresponding second load through each terminal box (300); The relay box (200) contains a relay (18) and a terminal block (16). The relay box (200) is equipped with a guide rail (15). Both the relay (18) and the terminal block (16) are snapped onto the guide rail (15). Both the relay (18) and the terminal block (16) can slide along the guide rail (15). Each relay (18) has a terminal block (16) on both sides. The two terminal blocks (16) are used to clamp and fix the middle relay (18).

2. The modular electrical box structure as described in claim 1, characterized in that, The first connecting line (24) includes a first A connecting line (241) and a first B connecting line (242). The first A connecting line (241) is used to connect the PCB board box (100) and the hub (400). The first B connecting line (242) is used to connect the hub (400) and the relay box (200). The first A connecting line (241) and the first B connecting line (242) cooperate to connect the PCB board box (100) to the relay box (200) through the hub (400). And / or, the second connecting line (25) includes a second A connecting line (251) and a second B connecting line (252), the second A connecting line (251) is used to connect the PCB board box (100) and the hub (400), the second B connecting line (252) is used to connect the hub (400) and the terminal box (300), the second A connecting line (251) and the second B connecting line (252) cooperate to connect the PCB board box (100) to the terminal box (300) through the hub (400).

3. The modular electrical box structure as described in claim 2, characterized in that, The first A connection line (241) is detachably connected to the PCB box (100) and / or the hub (400); And / or, the first B connection line (242) is detachably connected to the hub (400) and / or the relay box (200); And / or, the second A connection line (251) is detachably connected to the PCB box (100) and / or the hub (400); And / or, the second B connection line (252) is detachably connected to the hub (400) and / or the terminal box (300).

4. The modular electrical box structure as described in claim 2 or 3, characterized in that, The PCB box (100), relay box (200), terminal box (300) and hub (400) are each used to be installed in different locations.

5. The modular electrical box structure as described in any one of claims 1 to 3, characterized in that, It also includes a temperature sensor (2) and a first controller; The temperature sensor (2) is used to detect the temperature inside the PCB box (100); The PCB box (100) is provided with a cooling pipe (10), which is used to supply coolant to flow inside in order to cool the PCB box (100). The cooling pipe (10) is provided with a valve (8). The first controller is used to control the opening amount of the valve (8) according to the temperature inside the PCB box (100).

6. The modular electrical box structure as described in claim 5, characterized in that, When the temperature inside the PCB box (100) is greater than the set temperature value, the first controller controls the valve (8) to increase the opening amount; When the temperature inside the PCB box (100) is lower than the set temperature value, the first controller controls the valve (8) to reduce the opening amount.

7. The modular electrical box structure as described in any one of claims 1 to 3 and 6, characterized in that, It also includes a voltage detection device (7) and a second controller; The voltage detection device (7) is used to detect the voltage on the PCB board inside the PCB box (100); The second controller is used to cut off the power supply to the unit when an abnormal voltage occurs on the PCB board.

8. The modular electrical box structure as described in claim 7, characterized in that, When the voltage on the PCB board is higher than the first set voltage, the second controller cuts off the power supply to the unit. When the voltage on the PCB board is lower than the second set voltage, the second controller cuts off the power supply to the unit, wherein the second set voltage is less than the first set voltage.

9. The modular electrical box structure as described in claim 7, characterized in that, It also includes alarm devices; The second controller is used to control the alarm device to execute an alarm response when an abnormal voltage occurs on the PCB board.

10. An air conditioner, characterized in that, The modular electrical box structure includes any one of claims 1 to 9.

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