Header box

Abstract

The utility model discloses a combiner box which comprises a box body. The box body comprises a main body and a cover plate, the main body is provided with a containing cavity, the containing cavity is internally provided with first partition plates which divide the containing cavity into a plurality of installation cavities, each installation cavity is internally provided with an isolation switch, a fuse and a busbar assembly, the isolation switch comprises an operation handle, an input end and an output end, and the input end and the output end are oppositely arranged. The busbar assembly comprises an input side busbar group and an output side busbar group, the input side busbar group is electrically connected with the input end of the isolation switch, the output side busbar group is electrically connected with the output end of the isolation switch, and the fuse is electrically connected with the input side busbar group. The cover plate covers the accommodating cavity and is fixedly connected with the main body, a receding opening is formed in the cover plate, and the operating handle penetrates through the receding opening and extends to the outside of the main body. According to the combiner box, the problem that the combiner box is difficult to meet the electrical use safety specification due to the fact that no special cabinet body is provided for installation of each part of the combiner box and the layout is unreasonable is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of current collection and energy storage, in particular to a current collection box. BACKGROUND

[0002] At present, the battery pack (Battery Pack, battery pack) high-voltage cable in the energy storage market is mainly connected to the power conversion system (PCS, Power Conversion System, energy storage converter) side through the isolation knife switch, fuse and busbar in the current collection box (control cabin), however, the isolation knife switch, fuse and busbar in the current collection box part are not installed in a special cabinet, but are scattered in the current collection box, and the layout of each component in the current collection box is unreasonable, which is difficult to meet the electrical safety specification. SUMMARY

[0003] The main purpose of the utility model is to provide a current collection box to at least solve the problem that each component in the current collection box is not installed in a special cabinet and the layout is unreasonable, which makes it difficult for the current collection box to meet the electrical safety specification.

[0004] According to one aspect of the utility model, a current collection box is provided, comprising:

[0005] The box body comprises a main body and a cover plate, the main body is provided with a containing cavity, the containing cavity is provided with a first partition plate, the first partition plate divides the containing cavity into a plurality of installation cavities, each installation cavity is provided with an isolation knife switch, a fuse and a busbar assembly, the isolation knife switch comprises an operating handle and oppositely arranged input and output terminals, the busbar assembly comprises an input side busbar group and an output side busbar group, the input side busbar group comprises a first positive busbar, a second positive busbar and a negative busbar, the second positive busbar and the negative busbar are electrically connected with the input terminal of the isolation knife switch respectively, the output side busbar group is electrically connected with the output terminal of the isolation knife switch, and the fuse is electrically connected with the first positive busbar and the second positive busbar respectively;

[0006] The cover plate is arranged on the containing cavity and is fixedly connected with the main body, the cover plate is provided with a avoiding opening, and the operating handle extends to the outside of the main body through the avoiding opening.

[0007] Further, the box body is further provided with a connecting assembly electrically connected with the external PACK power cable, the connecting assembly comprises a positive cable and a negative cable, the first positive busbar is electrically connected with the positive electrode of the external PACK power cable through the positive cable, and the negative busbar is electrically connected with the negative electrode of the external PACK power cable through the negative cable.

[0008] Further, the output side busbar group comprises a first output busbar and a second output busbar, the first output busbar and the second output busbar are respectively electrically connected with the external PCS side cable.

[0009] Further, the inner wall of the installation cavity is provided with a second partition plate, the first output busbar and the second output busbar are arranged on the second partition plate, and the first output busbar and the second output busbar are respectively arranged between the inner wall of the installation cavity and the third partition plate.

[0010] Further, the second partition plate comprises an epoxy plate, and the third partition plate comprises an epoxy plate.

[0011] Further, the inner wall of the installation cavity is provided with a fourth partition plate, the first positive busbar, the fuse, the second positive busbar and the negative busbar are arranged on the fourth partition plate, and the first positive busbar and the negative busbar, the fuse and the negative busbar, and the second positive busbar and the negative busbar are respectively arranged between the fifth partition plate.

[0012] Further, the first partition plate comprises an epoxy plate, the fourth partition plate comprises an epoxy plate, and the fifth partition plate comprises an epoxy plate.

[0013] Further, the busbar box further comprises a box door, the box door is arranged on the cover plate and movably connected with the main body, and a transparent PC plate for observing the working state of the operating handle is arranged on the box door.

[0014] Further, the cover plate comprises a first cover plate and a second cover plate, the avoiding opening is arranged on the first cover plate, the first cover plate is fixedly connected with the box body, the second cover plate is fixedly connected with the box body, and the first cover plate and the second cover plate have a predetermined gap.

[0015] Further, the main body is a metal bending integrated structure.

[0016] In the utility model, through setting first partition in the accommodation cavity of the box body of the conflux box, the accommodation cavity is reasonably divided into multiple installation cavities. Each installation cavity is specially provided with isolation knife switch, fuse and busbar assembly, so that each component has special installation space, avoids the mess and insecurity caused by bulk layout. In the installation cavity, the isolation knife switch is taken as the benchmark, the busbar group and the fuse are reasonably arranged at the input end and the output end of the isolation knife switch, the compactness of the layout in the conflux box is improved, the space utilization is high, the overall structure of the conflux box is optimized, the demand of electrical connection is met, the mutual independence of each component is ensured, and the overall safety and reliability of the conflux box are improved. The cover plate is set on the accommodation cavity, the avoiding opening is arranged on the cover plate, the operating handle of the isolation knife switch is extended out of the accommodation cavity through the avoiding opening, the operator can operate the isolation knife switch without opening the cover plate, and meanwhile the safety of operation is ensured. The combination of the cover plate and the box door realizes the double protection of the internal structure of the conflux box, can prevent the misoperation of external personnel, and significantly improves the safety of the conflux box. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings described herein are used to provide further understanding of the utility model and constitute a part of the utility model. The illustrative embodiments of the utility model and the description thereof are used to explain the utility model, and do not constitute improper limitation on the utility model. In the drawings:

[0018] Figure 1 The structure schematic view of the conflux box disclosed by the utility model embodiment is shown in the figure.

[0019] Figure 2 The internal structure schematic view of the conflux box disclosed by the utility model embodiment is shown in the figure.

[0020] Figure 3 The structure schematic view of the conflux box when the box door is not installed is shown in the figure.

[0021] Figure 4 The structure schematic view of the conflux box when the box door is installed is shown in the figure.

[0022] Among them, the above-mentioned drawing includes the following figure marks:

[0023] 10, main body; 11, accommodating cavity; 111, mounting cavity; 12, first partition plate; 13, isolation knife switch; 131, operation handle; 132, input end; 133, output end; 14, fuse; 15, busbar assembly; 151, input side busbar group; 1511, first positive busbar; 1512, second positive busbar; 1513, negative busbar; 152, output side busbar group; 1521, first output busbar; 1522, second output busbar; 16, connecting assembly; 161, positive cable; 162, negative cable; 17, second partition plate; 18, third partition plate; 191, fourth partition plate; 192, fifth partition plate; 20, cover plate; 21, first cover plate; 211, avoiding opening; 22, second cover plate; 23, predetermined gap; 30, box door; 31, transparent PC plate; 40, high-voltage danger warning sign; 50, knife switch operation instruction sign. DETAILED DESCRIPTION

[0024] It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0025] It should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that the terms "comprise" and / or "include" as used herein indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0026] Unless specifically stated otherwise, the relative arrangement of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that the sizes of the various parts shown in the drawings are not drawn in accordance with the actual proportional relationship. The techniques, methods and devices known to those skilled in the relevant art can not be discussed in detail, but under appropriate circumstances, the techniques, methods and devices should be considered as part of the authorized description. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0027] Reference is made to Figures 1 to 4As shown, according to the embodiment of the present application, a kind of busbar box is provided, including box body.The box body includes main body 10 and cover plate 20, main body 10 is provided with accommodating cavity 11, first partition 12 is provided in accommodating cavity 11, and first partition 12 divides accommodating cavity 11 into multiple installation cavities 111, isolation knife switch 13, fuse 14 and busbar assembly 15 are all provided in each installation cavity 111, isolation knife switch 13 includes operating handle 131 and oppositely arranged input end 132 and output end 133, busbar assembly 15 includes input side busbar group 151 and output side busbar group 152, input side busbar group 151 includes first positive busbar 1511, second positive busbar 1512 and negative busbar 1513, second positive busbar 1512 and negative busbar 1513 are electrically connected with the input end 132 of isolation knife switch 13 respectively, the output end 133 of isolation knife switch 13 is electrically connected with the output side busbar group 152, and the first positive busbar 1511 and second positive busbar 1512 are electrically connected with fuse 14 respectively.Cover plate 20 is covered in accommodating cavity 11 and is fixedly connected with main body 10, and cover plate 20 is provided with avoiding mouth 211, operating handle 131 extends to the outside of main body 10 through avoiding mouth 211.

[0028] Specifically, by first partition 12, accommodating cavity 11 is divided into multiple installation cavities 111, and isolation knife switch 13, fuse 14 and busbar assembly 15 are separately provided in each installation cavity 111, which can realize the division of busbar box into multiple branch circuits, and each branch circuit does not interfere with each other, for example Figure 2 The busbar box of the embodiment is provided with two installation cavities 111, and each electrical element in the two installation cavities 111 constitutes different branch circuits to realize the busbar connection of different branch circuits.In the busbar box, isolation knife switch 13 is used for isolation and switching of circuit, and the operating handle 131 on isolation knife switch 13 can control the on-off of circuit, so as to isolate or connect each branch circuit, and when maintenance is needed, the circuit of corresponding branch can be switched by operating the operating handle 131 of isolation knife switch 13.Moreover, operating handle 131 extends to the outside through avoiding mouth 211 on cover plate 20, so that isolation knife switch 13 can be operated without opening the whole busbar box body, which improves the convenience and safety of isolation knife switch.The input end 132 of isolation knife switch 13 is electrically connected with input side busbar group 151, and the output end 133 of isolation knife switch 13 is electrically connected with output side busbar group 152, and fuse 14 is arranged at input side busbar group 151, which can realize overcurrent protection of circuit and multiple busbar connection effect, and the circuit layout in installation cavity 111 is reasonable and clear, so that the layout of busbar box is more compact, which can save installation space of busbar box while ensuring the function of busbar box.

[0029] Further, the box is also provided with a connection assembly 16 electrically connected with the external PACK (battery pack) power cable, the connection assembly 16 includes a positive cable 161 and a negative cable 162, the first positive busbar 1511 is electrically connected with the positive of the external PACK power cable through the positive cable 161, and the negative busbar 1513 is electrically connected with the negative of the external PACK power cable through the negative cable. It can be understood that the external battery pack power cable is electrically connected with the battery pack, and the external battery pack power cable of the embodiment includes a battery pack high-voltage cable with large current bearing capacity. By arranging the connection assembly 16 including the positive cable 161 and the negative cable 162, the direct electrical connection of the first positive busbar 1511 and the negative busbar 1513 with the external battery pack power cable is realized, the intermediate link in the process of electrical energy transmission is reduced, the energy loss is reduced, and the electrical energy transmission efficiency is improved. At the same time, since a special cable is used for connection, compared with other connection modes (such as a wiring terminal, a plug connector, etc.), the electrical connection is more reliable, and the circuit failure caused by poor contact or looseness is reduced.

[0030] Further, the output side busbar group 152 includes a first output busbar 1521 and a second output busbar 1522, and the first output busbar 1521 and the second output busbar 1522 are respectively electrically connected with the external PCS (energy storage converter) side cable.

[0031] By arranging the output side busbar group 152 as the first output busbar 1521 and the second output busbar 1522 and respectively electrically connecting with the cable of the external energy storage converter, the two independent output busbars allow the electrical energy of a single branch circuit to be more flexibly distributed from the busbar box to two different energy storage converters, and the distribution ratio of the electrical energy can be adjusted according to actual needs to meet the needs of different loads or application scenarios. As the scale of the power system expands or the load demand changes, more energy storage converters need to be added, and by arranging two output busbars, it can be more easily expanded or adjusted to adapt to future changes. For example, additional energy storage converters can be conveniently added and connected with the second output busbar to expand the capacity of the system. In critical application scenarios such as data centers and hospitals, the reliability of electrical energy supply is extremely high. By arranging two independent output busbars and connecting with different energy storage converters, redundant supply of electrical energy can be realized. If one of the energy storage converters or output busbars fails, the other can still work to ensure continuous power supply of the system. The two output busbars are respectively connected with different energy storage converter cables, which can more effectively utilize the transmission capacity of the cables and reduce the loss in the process of electrical energy transmission. At the same time, it is also helpful to balance the loads corresponding to each energy storage converter and improve the electrical energy transmission efficiency of the entire system.

[0032] Reference Figure 2As shown, the inner wall of the mounting cavity 111 is provided with a second partition plate 17, the first output busbar 1521 and the second output busbar 1522 are both arranged on the second partition plate 17, and the third partition plate 18 is arranged between the first output busbar 1521 and the inner wall of the mounting cavity 111 and between the second output busbar 1522 and the inner wall of the mounting cavity 111. The second partition plate 17 separates the first output busbar 1521 and the inner wall of the mounting cavity 111, and separates the second output busbar 1522 and the inner wall of the mounting cavity 111, so as to avoid the contact between the first output busbar 1521 and the second output busbar 1522 and the inner wall of the mounting cavity 111, not only preventing potential physical damage such as scratches or impacts, but also reducing the risk of electrical interference or short circuit caused by direct contact, thereby enhancing the safety and stability of the system. The third partition plate 18 separates the first output busbar 1521 and the second output busbar 1522 in the mounting cavity 111, so as to achieve electrical isolation between the first output busbar 1521 and the second output busbar 1522, reduce electrical interference between the first output busbar 1521 and the second output busbar 1522, and improve the safety of the busbar box.

[0033] Further, the second partition plate 17 comprises an epoxy plate, and the third partition plate 18 comprises an epoxy plate.

[0034] Reference Figure 2As shown, the inner wall of the mounting cavity 111 is provided with a fourth partition plate 191, the first positive bus bar 1511, the fuse 14, the second positive bus bar 1512, and the negative bus bar 1513 are all arranged on the fourth partition plate 191, and the fifth partition plate 192 is arranged between the first positive bus bar 1511 and the negative bus bar 1513, between the fuse 14 and the negative bus bar 1513, and between the second positive bus bar 1512 and the negative bus bar 1513. The fourth partition plate 191 serves to separate the first positive bus bar 1511, the second positive bus bar 1512, and the negative bus bar 1513 from the inner wall of the mounting cavity 111, so as to effectively isolate the first positive bus bar 1511, the second positive bus bar 1512, and the negative bus bar 1513 from the inner wall of the mounting cavity, thereby enhancing the electrical insulation and physical protection. The fifth partition plate 192 serves to physically and electrically isolate the positive bus bar input circuit composed of the first positive bus bar 1511, the fuse 14, and the second positive bus bar 1512 from the negative bus bar input circuit composed of the negative bus bar 1513, so as to effectively separate the positive and negative circuits, thereby avoiding the risk of short circuit caused by improper circuit layout or external factors, improving the safety of the busbar box, and reducing the probability of faults caused by mutual interference of circuits. The fifth partition plate 192 provides an additional electrical insulation barrier, further enhancing the isolation effect between the positive and negative circuits, preventing electrical leakage, and reducing electromagnetic interference.

[0035] Further, the first partition plate 12 comprises an epoxy plate, the fourth partition plate 191 comprises an epoxy plate, and the fifth partition plate 192 comprises an epoxy plate.

[0036] In the above embodiments, the first partition plate 12, the second partition plate 17, the third partition plate 18, the fourth partition plate 191, and the fifth partition plate 192 all adopt epoxy plates, which have very high electrical insulation, can remain stable even in high-humidity or high-temperature environments, and can effectively prevent electrical leakage and short circuit between circuits. In addition, the epoxy plates have high hardness and impact resistance, and can withstand large mechanical loads. Therefore, the epoxy plates can not only be used as insulating materials, but also can provide necessary mechanical support to protect the circuits from physical damage. The epoxy plates also have good resistance to chemicals such as acids, bases, and organic solvents, and can maintain their performance stability in complex chemical environments or in the presence of corrosive substances, ensuring long-term reliable operation of the circuits. The epoxy plates can withstand high-temperature environments and have high heat distortion temperature, and can be used for a long time at about 200°C. The epoxy plates are relatively light in weight, and can be easily processed by cutting, drilling, and polishing, thereby meeting the layout requirements of various electrical components in the busbar box.

[0037] Further, the box further comprises a box door 30, the box door 30 is arranged on the cover plate 20 and movably connected with the main body 10, and a transparent PC plate 31 for observing the working state of the operating handle is arranged on the box door 30. The box door 30 provides a closed protection environment for the internal elements of the box, which not only avoids the misoperation of external workers or external personnel, but also effectively prevents the invasion of external factors such as dust, moisture and insects, and ensures the normal operation and long-term stability of the internal electrical elements. The position of the transparent PC plate 31 on the box door 30 corresponds to the operating handle 131 of the isolation knife switch 13 when the box door 30 is in the closed state, and the transparent PC plate allows the operator to directly observe the working state of the operating handle without opening the box door, thereby improving the convenience of operation and reducing the safety risks that may be caused by frequent opening and closing of the box door.

[0038] Further, the cover plate 20 comprises a first cover plate 21 and a second cover plate 22, the avoiding opening 211 is located on the first cover plate 21, the first cover plate 21 is fixedly connected with the main body 10, the second cover plate 22 is fixedly connected with the main body 10, and a predetermined gap 23 is arranged between the first cover plate 21 and the second cover plate 22.

[0039] Reference Figure 3 The area covered by the first cover plate 21 is the area in the accommodation cavity 11 except the output side bus bar group 152, and the area covered by the second cover plate 22 is the area of the output side bus bar group 152 in the accommodation cavity 11. Since the output side bus bar group 152 needs to be electrically connected with the external energy storage converter, the wiring operation of the circuit will be more frequent. Therefore, the second cover plate 22 is arranged to cover the area of the output side bus bar group 152, thereby improving the safety of the box. The predetermined gap 23 is arranged between the first cover plate 21 and the second cover plate 22, which can achieve the effect of ventilation and prevent the deformation of the box caused by thermal expansion and heat dissipation of the box.

[0040] Further, the main body 10 is arranged in a sheet metal bending integrated structure. The sheet metal bending integrated structure does not need to be separately opened and molded, which can save the production cost of the box. The sheet metal bending integrated structure can also effectively resist external pressure and impact, improve the overall strength and stability, and ensure that the box can maintain a stable operating state in various environments. In the embodiment, a high-voltage danger warning sign 40 is arranged on the box door 30, and a high-voltage danger warning sign 40 and a knife switch operation instruction sign 50 are arranged on the cover plate 20. The high-voltage danger warning sign 40 can enhance the safety awareness of the operator, and the intuitive visual warning can effectively prevent safety accidents caused by misoperation or neglect of high-voltage danger. The knife switch operation instruction sign 50 ensures that the operator can accurately understand and perform the correct operation process of the knife switch, thereby improving the standardization and efficiency of the operation.

[0041] For purposes of the description hereinafter, spatial relative terms, such as "above", "below", "upper", "lower", and the like, can be used to describe the relative position of one element or feature to another as illustrated in the figures. It will be understood that the spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "up" other elements or features would then be oriented "below" or "down" the other elements or features. Thus, the exemplary term "above" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. Well, the spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "up" other elements or features would then be oriented "below" or "down" the other elements or features. Thus, the exemplary term "above" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0042] In addition, it needs to be explained that the use of "first", "second" and the like words to limit the parts, only for the convenience of the corresponding parts for the distinction, such as no other declaration, the above words have no special meaning, therefore can not be understood as the protection scope of the utility model.

[0043] The above is only the preferred embodiment of the utility model, and is not used to limit the utility model. For those skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A junction box, characterized in that, include: The enclosure includes a main body (10) and a cover plate (20). The main body (10) has a receiving cavity (11). A first partition (12) is provided inside the receiving cavity (11). The first partition (12) divides the receiving cavity (11) into multiple installation cavities (111). Each installation cavity (111) is provided with an isolating switch (13), a fuse (14), and a bus assembly (15). The isolating switch (13) includes an operating handle (131) and an input end (132) and an output end (133) arranged opposite to each other. The bus assembly (15) includes an input side bus group (132). 51) and output side bus group (152), the input side bus group (151) includes a first positive bus (1511), a second positive bus (1512) and a negative bus (1513), the second positive bus (1512) and the negative bus (1513) are electrically connected to the input terminal (132) of the isolating switch (13), the output side bus group (152) is electrically connected to the output terminal (133) of the isolating switch (13), and the fuse (14) is electrically connected to the first positive bus (1511) and the second positive bus (1512); The cover plate (20) covers the accommodating cavity (11) and is fixedly connected to the main body (10). The cover plate (20) is provided with a clearance opening (211), and the operating handle (131) extends through the clearance opening (211) to the outside of the main body (10).

2. The combiner box according to claim 1, characterized in that, The enclosure is also provided with a connection assembly (16) that is electrically connected to the external PACK power cable. The connection assembly (16) includes a positive cable (161) and a negative cable (162). The first positive busbar (1511) is electrically connected to the positive terminal of the external PACK power cable through the positive cable (161), and the negative busbar (1513) is electrically connected to the negative terminal of the external PACK power cable through the negative cable (162).

3. The combiner box according to claim 1, characterized in that, The output bus group (152) includes a first output bus (1521) and a second output bus (1522), and the first output bus (1521) and the second output bus (1522) are respectively electrically connected to the external PCS side cable.

4. The combiner box according to claim 3, characterized in that, The inner wall of the mounting cavity (111) is provided with a second partition (17), the first output bus (1521) and the second output bus (1522) are both provided on the second partition (17), and a third partition (18) is provided between the first output bus (1521) and the inner wall of the mounting cavity (111), and between the second output bus (1522) and the inner wall of the mounting cavity (111).

5. The combiner box according to claim 4, characterized in that, The second partition (17) comprises an epoxy board, and the third partition (18) comprises an epoxy board.

6. The combiner box according to claim 1, characterized in that, The inner wall of the mounting cavity (111) is provided with a fourth partition (191). The first positive bus (1511), the fuse (14), the second positive bus (1512) and the negative bus (1513) are all disposed on the fourth partition (191). A fifth partition (192) is provided between the first positive bus (1511) and the negative bus (1513), between the fuse (14) and the negative bus (1513), and between the second positive bus (1512) and the negative bus (1513).

7. The combiner box according to claim 6, characterized in that, The first partition (12) includes an epoxy board, the fourth partition (191) includes an epoxy board, and the fifth partition (192) includes an epoxy board.

8. The combiner box according to claim 1, characterized in that, The junction box also includes a door (30), which covers the cover plate (20) and is movably connected to the main body (10). A transparent PC plate (31) is provided on the door (30) for observing the working status of the operating handle (131).

9. The combiner box according to claim 1, characterized in that, The cover plate (20) includes a first cover plate (21) and a second cover plate (22). The clearance opening (211) is located on the first cover plate (21). The first cover plate (21) is fixedly connected to the box body. The second cover plate (22) is fixedly connected to the box body. There is a predetermined gap (23) between the first cover plate (21) and the second cover plate (22).

10. The combiner box according to any one of claims 1 to 9, characterized in that, The main body (10) is configured as an integral sheet metal bending structure.

Images