Optical storage power supply cabinet

Abstract

The utility model relates to a light storage power supply cabinet, which comprises a cabinet body, mounting racks, an inverter mounting plate and a partition plate, the cabinet body comprises a cabinet door, a frame, side plates and a back plate, the inverter mounting plate is detachably fixed between the mounting racks on the two sides and is used for hanging and fixedly placing an inverter, and the partition plate is used for fixing the inverter mounting plate. And at least two partition plates are detachably fixed between the mounting racks on the two sides, are vertically arranged at intervals below the inverter mounting plate, and are used for placing battery assemblies. The cooperation design of the inverter mounting plate and the separator plate makes the coordination and spatial layout between the inverter and the battery assembly more compact, compared with a traditional photovoltaic energy storage power supply cabinet, the cabinet body structure is greatly simplified, the inverter and the battery assembly are intensively arranged in the cabinet body, the installation and connection requirements of independent equipment are reduced, and the cost is reduced. The number of interfaces is reduced, and the wiring length is shortened, so that the energy loss of the inverter and the battery assembly caused by the interfaces and the wiring is reduced, the energy conversion process is effectively optimized, the energy efficiency of the whole system is improved, the production cost, the installation cost and the maintenance cost are reduced, and the production efficiency is improved. And meanwhile, the inverter mounting plate and the partition plate are flexibly and detachably mounted, so that the universality of the product is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery assembly cabinets, in particular to a photovoltaic power supply cabinet. Background Art

[0002] As the global demand for renewable energy continues to grow, solar photovoltaic power generation technology has developed rapidly. Among them, photovoltaic energy storage power cabinets can store the electricity collected by solar photovoltaic cell arrays and are key components of solar photovoltaic power generation. In existing photovoltaic energy storage power cabinets, inverters and battery components usually exist as independent modules, which are connected through complex interfaces and long-distance wiring harnesses to transfer energy and exchange information. This connection method will inevitably produce energy losses, affecting the efficiency and performance of the photovoltaic power generation system. In addition, due to the complex internal structure design of the cabinet, the production cost, installation cost and maintenance cost are all high, and the versatility is low. Only a small number of inverters and battery components of suitable sizes can be selected for assembly. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the problems of large energy loss in existing photovoltaic energy storage power supply cabinets and high cost due to complex cabinet structure, thereby providing a photovoltaic energy storage power supply cabinet.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A photovoltaic power supply cabinet, comprising

[0006] A cabinet body, comprising a cabinet door, a frame, side panels arranged on both sides of the frame and a back panel arranged on the back of the frame, wherein the cabinet door, the frame, the side panels and the back panel form an inner cavity for placing an inverter and a battery assembly;

[0007] A plurality of mounting frames are symmetrically arranged on the inner walls of the side panels on both sides, and the mounting frames are detachably fixed to the inner walls of the side panels and / or the frame;

[0008] An inverter mounting plate is detachably fixed between the mounting frames on both sides, and the inverter mounting plate is located on the upper part of the cabinet and is used to install the inverter;

[0009] At least two partitions are detachably fixed between the mounting frames on both sides, and the partitions are vertically spaced and located below the inverter mounting plate for placing battery components;

[0010] The inverter mounting plate and the partition plate are both spaced apart from the back plate.

[0011] Furthermore, the inverter mounting plate is a box-type structure, including a front panel and a side panel, the side panel surrounds four sides of the front panel and is bent backwards, and the front panel and the side panel are an integrated structure.

[0012] Furthermore, the front panel is provided with a plurality of inverter mounting holes; the front panel is also provided with an integrated grounding bar; the inverter mounting holes and the integrated grounding bar are arranged side by side and spaced apart;

[0013] The side panels are respectively provided with fixing holes corresponding to the mounting brackets, and there are at least two fixing holes on each side.

[0014] Furthermore, an open storage space is formed on the partition located at the uppermost layer for storing at least one group of battery components, and the open storage space is connected to the space where the inverter mounting plate is located;

[0015] A transverse open space is formed between adjacent partitions for accommodating at least one group of battery components. The transverse open space is connected to the space where the inverter mounting plate is located through the gap between the partition and the back plate.

[0016] Furthermore, the mounting frame is also horizontally spaced apart with a row of positioning holes, and the two sides of the inverter mounting plate are detachably connected to at least one positioning hole on the mounting frame on the corresponding side;

[0017] The two sides of the partition are detachably connected to at least two positioning holes on the corresponding mounting frame.

[0018] Further, shutters with downward openings are provided on both sides of the side panels, and at least two shutters are provided on the upper and lower parts of each side panel, the position of the upper shutter corresponds to the inverter, and the position of the lower shutter corresponds to the battery assembly;

[0019] The inner wall of the shutter is embedded with a mesh plate.

[0020] Furthermore, the back plate is an integrated closed structure.

[0021] Furthermore, a glass observation window is embedded in the top of the cabinet door.

[0022] Further, the frame comprises a transverse rod and a longitudinal rod, the longitudinal rod is provided with a plurality of mounting through holes at vertical intervals, and the mounting frame is detachably connected to the longitudinal rod through the mounting through holes; and / or

[0023] The bottom of the cabinet is also provided with a heightened base, and the heightened base is connected to the bottom of the frame.

[0024] Furthermore, a wire outlet is provided at an upper portion of one side of the side plate, the position of which corresponds to the space where the inverter mounting plate is located, and an anti-cut wire sleeve is provided at the inner edge of the wire outlet.

[0025] In summary, compared with the prior art, the utility model has at least the following beneficial effects: the photovoltaic power supply cabinet of the utility model includes a cabinet body, a mounting frame, an inverter mounting plate and a partition, the cabinet body includes a cabinet door, a frame, a side panel and a back panel, the inverter mounting plate is detachably fixed between the mounting frames on both sides, and is used for hanging and fixing the inverter, at least two of the partitions are detachably fixed between the mounting frames on both sides and are located vertically spaced below the inverter mounting plate, and are used for placing battery components. The coordinated design of the inverter mounting plate and the partition makes the coordination and spatial layout between the inverter and the battery assembly closer. Compared with the traditional photovoltaic energy storage power supply cabinet, the cabinet structure is greatly simplified, and the inverter and battery assembly are centrally arranged in the cabinet, which reduces the installation and connection requirements of independent equipment, reduces the number of interfaces, shortens the wiring length, and thus reduces the energy loss of the inverter and battery assembly caused by the interface and connection, effectively optimizes the energy conversion process, thereby improving the energy efficiency of the overall system, and reducing the production cost, installation cost and maintenance cost. At the same time, due to the flexible and detachable installation of the inverter mounting plate and the partition, the versatility of the product is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic diagram of the structure of a photovoltaic power supply cabinet provided in one embodiment of the utility model.

[0028] Figure 2 A front cross-sectional view of a photovoltaic power supply cabinet provided in one embodiment of the utility model.

[0029] Figure 3 A side sectional view of a photovoltaic power supply cabinet provided in one embodiment of the utility model.

[0030] Figure 4 The present invention is a schematic structural diagram of an inverter mounting plate provided in one embodiment of the present invention.

[0031] Figure 5 The present invention is a schematic structural diagram of a frame provided in one embodiment of the present invention.

[0032] Description of reference numerals:

[0033] 1. Cabinet body; 11. Cabinet door; 111. Glass observation window; 12. Frame; 121. Horizontal rod; 122. Longitudinal rod; 1221. Mounting through hole; 13. Side panel; 131. Shutter; 132. Mesh panel; 133. Wire outlet; 1331. Anti-cut wire sleeve; 14. Back panel; 15. Heightening base;

[0034] 2. Mounting frame; 21. Positioning hole;

[0035] 3. Inverter mounting plate; 31. Front panel; 311. Inverter mounting hole; 312. Integrated grounding bar; 32. Side panel; 321. Fixing hole;

[0036] 4. Partition. DETAILED DESCRIPTION

[0037] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] As attached Figure 1 , Attachment Figure 2 and attached Figure 3As shown, the embodiment of the utility model discloses a photovoltaic power supply cabinet, comprising:

[0041] The cabinet 1 includes a cabinet door 11, a frame 12, side panels 13 arranged on both sides of the frame 12, and a back panel 14 arranged on the back of the frame 12. The cabinet door 11, the frame 12, the side panels 13 and the back panel 14 (not shown in the figure) form an inner cavity in which the inverter and the battery assembly can be placed. A plurality of mounting frames 2 are symmetrically arranged on the inner walls of the side panels 13 on both sides. The mounting frames 2 are detachably fixed to the inner walls of the side panels 13 and / or the frame 12 by screws or other connection methods, so that the position of the mounting frames 2 can be adjusted according to the use requirements. An inverter mounting plate 3 is detachably fixed between the mounting frames 2 on both sides. The inverter mounting plate 3 is located at the upper part of the cabinet 1 and is used to install the inverter; at least two partitions 4 are detachably fixed between the mounting frames 2 on both sides. The partitions 4 are vertically spaced and located below the inverter mounting plate 3, and are used to place the battery assembly; the inverter mounting plate 3 and the partitions 4 are spaced from the back panel 14. Specifically, the vertically mounted inverter mounting plate 3 can be removably fixed to different positions between the mounting frames 2 on both sides by means of screw holes, so as to adapt to inverters of different thicknesses, reduce the need to replace the mounting frame 2 or perform complex modifications due to differences in inverter specifications, and at the same time, make the inverter closer to the cabinet door 11 for user operation and observation. At least two partitions 4 arranged at vertical intervals can provide placement positions for at least two groups of battery assemblies, which are divided into main battery assemblies and backup battery assemblies. The redundant design of the battery assemblies ensures that the backup battery assemblies can be automatically switched to achieve continuous power supply when the power grid fluctuates or fails, ensuring the normal operation of key equipment and systems, and effectively improving the reliability of the system.

[0042] Furthermore, the matching design of the inverter mounting plate 3 and the partition 4 allows the inverter and the battery assembly to be directly connected, making the coordination and spatial layout between the two closer. Compared with the traditional photovoltaic energy storage power supply cabinet, the cabinet 1 structure is greatly simplified, and the inverter and the battery assembly are centrally arranged in the cabinet 1, which reduces the installation and connection requirements of independent equipment, reduces the number of interfaces, and shortens the wiring length, thereby reducing the energy loss of the inverter and the battery assembly due to the interface and the long-distance wiring harness connection, effectively optimizing the energy conversion process, thereby improving the energy efficiency of the overall system, and reducing the production cost, installation cost and maintenance cost. At the same time, since the sizes of the inverters and battery assemblies purchased by different users may be different, this embodiment can flexibly adjust the distance between the partition 4 and the inverter mounting plate 3 and between the partition 4 and the partition 4 to meet the installation requirements of inverters and battery assemblies of different models and sizes, greatly improving the versatility of the product.

[0043] Specifically, as attached Figure 4As shown, the inverter mounting plate 3 is a box-type structure, including a front panel 31 and a side panel 32. The side panel 32 surrounds the four sides of the front panel 31 and is bent backward. The front panel 31 and the side panel 32 are an integrated structure, so that the inverter mounting plate 3 can disperse the force when the inverter is suspended, and the overall structural strength of the inverter mounting plate 3 is improved, so that it can bear the weight of different types of inverters and improve the stability of the inverter mounting plate 3. Preferably, the inverter mounting plate 3 is bent using a large-area metal plate. Since the large-area metal plate has good thermal conductivity, the heat generated by the inverter can be quickly conducted to the entire cabinet 1 and dissipated, thereby effectively reducing the operating temperature of the inverter, preventing the inverter from being degraded or damaged due to overheating, and keeping the inverter running in an efficient state, thereby improving its working efficiency. In addition, reducing heat loss means reducing unnecessary consumption of electrical energy, thereby improving the energy efficiency ratio of the entire system. A plurality of inverter mounting holes 311 are provided on the front panel 31 of the inverter mounting plate 3, which are used to provide fixing points for the inverter, and the inverter mounting holes 311 are provided in plurality, so as to facilitate the flexible installation or removal of inverters of different models on the market according to different installation requirements and scenarios, further improving the versatility of the product, and the porous design enables the installer to install the inverter without the need for additional modification or punching operations, which greatly simplifies the installation process, reduces installation time and cost, and improves the compatibility and adaptability of the equipment. In addition, the porous design also provides convenience for future equipment upgrades and replacements. If there is a need to replace or upgrade the inverter, the new inverter can be directly installed on the existing inverter mounting plate 3 without adjusting the mounting structure. Through this flexible and efficient design, the installation and maintenance of the inverter becomes easier, which helps to improve the operating efficiency and reliability of the overall system.

[0044] In addition, an integrated grounding bar 312 is provided on the front panel 31, and the inverter mounting hole 311 and the integrated grounding bar 312 are arranged side by side and spaced apart. The direct connection between the integrated grounding bar 312 and the mounting cables of the inverter and battery assembly not only enhances the safety of the photovoltaic power cabinet and effectively reduces electrical interference, but also simplifies the installation process and wiring complexity, allowing the installer to complete the connection of all grounding cables at one time, making the equipment installation more convenient and firm, and effectively improving the reliability and stability of the overall system. The side panels 32 are respectively provided with fixing holes 321 corresponding to the mounting frames 2, and there are at least two fixing holes 321 on each side for connecting with the mounting frames 2 on both sides.

[0045] As attached Figure 2As shown, an open storage space is formed on the partition 4 located on the top layer, which is used to store at least one group of battery components. The open storage space is connected to the space where the inverter mounting plate 3 is located, reducing the installation and connection requirements of independent equipment, making the inverter and the battery component an integrated design, making full use of the internal space to make the coordination and spatial layout between the two closer, thereby reducing the energy loss caused by the interface and long-distance wiring harness connection between the inverter and the battery component, and effectively optimizing the energy conversion process. A horizontal open space is formed between adjacent partitions 4, which is used to store at least one group of battery components. The horizontal open space is connected to the space where the inverter mounting plate 3 is located through the gap between the partition 4 and the back plate 14, so that the battery component harness can be connected to the inverter through this space.

[0046] As attached Figure 3 As shown, the mounting frame 2 also has a row of several positioning holes 21 horizontally spaced apart, and the two sides of the inverter mounting plate 3 are detachably connected to at least one positioning hole 21 on the corresponding side mounting frame 2, and the two sides of the partition 4 are detachably connected to at least two positioning holes 21 on the corresponding side mounting frame 2. The flexible detachable installation design of the inverter mounting plate 3 and the partition 4 of the utility model can adapt to inverters and battery components of various specifications, so that users can flexibly adjust the positions of the inverter mounting plate 3 and the partition 4 according to the sizes of inverters and battery components of different specifications and different actual use requirements, making full use of the space inside the cabinet 1 and greatly improving the versatility.

[0047] As attached Figure 1 As shown, shutters 131 with downward openings are provided on both sides of the side panel 13. At least two shutters 131 are provided on the upper and lower parts of each side panel 13. The position of the upper shutter 131 corresponds to the inverter, and the position of the lower shutter 131 corresponds to the battery assembly, which is helpful for the heat dissipation of the inverter and the battery and the control of the temperature inside the cabinet 1. The design of the upper and lower double-row shutters 131 promotes the circulation and exchange of air inside the cabinet 1 by optimizing the airflow path, so that the heat generated by the inverter and the battery assembly can be quickly discharged from the cabinet 1, effectively reducing the operating temperature of the inverter and the battery assembly, and preventing the performance degradation and failure of the inverter and the battery assembly due to overheating. A good heat dissipation design can extend the service life of the equipment, ensure its stable operation in various working environments, reduce the maintenance and replacement frequency, and effectively improve the stability and economic benefits of the entire system. In addition, since the opening is downward, it can also effectively prevent the entry of external humid gas, protect the internal electronic components from the influence of moisture, thereby improving the reliability of the photovoltaic power supply cabinet.

[0048] Furthermore, a mesh panel 132 (not shown) is embedded in the inner wall of the shutter 131. The function of the mesh panel 132 is to improve the insect-proof performance of the cabinet 1, and to prevent various small insects from entering the cabinet 1, preventing them from gnawing on cables or accumulating on electrical components to cause problems such as line short circuits, inverter or battery component failures, and at the same time maintaining a good ventilation effect to ensure air circulation in the cabinet 1. The design of the mesh panel 132 provides an additional layer of protection while the shutter 131 ensures the heat dissipation performance, further improving the reliability and safety of the photovoltaic power supply cabinet, extending its service life, and ensuring that the photovoltaic power supply cabinet can operate stably and efficiently under various environmental conditions.

[0049] Since the wiring harness of the inverter and battery assembly is closer to the back panel 14, in order to prevent the outside from damaging the wiring harness through the back panel 14, such as debris or insects entering the cabinet 1 through the back panel 14 and directly contacting the wiring harness to damage the wiring harness; the back panel 14 is designed as an integrated closed structure, eliminating the design of gaps or openings that may damage the wiring harness, isolating the wiring harness from factors that may cause damage to it, reducing the risk of damage to the wiring harness, and ensuring the stability of the operation of the photovoltaic power supply cabinet. It should be noted that the integrated closed structure of the back panel 14 means that, except for the necessary connection holes connected to the frame 12, other areas of the back panel 14 have no through grooves, gaps, or through holes, etc., which ensures the integrity of the back panel 14.

[0050] As attached Figure 1 As shown, a glass observation window 111 is embedded in the top of the cabinet door 11. The glass observation window 111 can observe the corresponding space of the inverter mounting plate 3 inside the photovoltaic power cabinet. This design allows the staff to observe the working status and operating parameters of the inverter without frequently switching the cabinet. And because the internal components and connection parts of the inverter can also be observed through the glass observation window 111, it is convenient for maintenance personnel to quickly check and diagnose, and timely discover and deal with potential problems.

[0051] As attached Figure 5 As shown, the frame 12 adopts a full welding connection process to ensure the integrity and stability of the cabinet 1 structure, greatly improving the mechanical strength and durability of the cabinet 1. The high-strength frame 12 can withstand greater external forces and impacts, reduce the risk of deformation and damage, thereby protecting the safety and normal operation of internal equipment, and effectively improving the reliability and service life of the system. The frame 12 includes a transverse rod 121 and a longitudinal rod 122. The longitudinal rod 122 is vertically spaced with a plurality of mounting holes 1221. The mounting frame 2 is detachably connected to the longitudinal rod 122 through the mounting holes 1221, so that the user can flexibly adjust the position of the mounting frame 2 according to the size of the purchased inverter and battery assembly of different specifications and different actual use requirements, and reasonably arrange the internal space of the cabinet 1 to facilitate the subsequent installation of the inverter mounting plate 3 and the partition 4.

[0052] As attached Figure 1 As shown, a heightened base 15 is also provided at the bottom of the cabinet body 1, and the heightened base 15 is connected to the bottom of the frame 12. The heightened base 15 improves the convenience of opening and closing the cabinet door 11, especially in an environment with limited space or uneven ground, which is helpful for daily maintenance operations of the photovoltaic power supply cabinet. In addition, the heightened design can effectively prevent the photovoltaic power supply cabinet from being eroded by moisture, dust and dirt on the ground, further protect the electrical components in the photovoltaic power supply cabinet, and extend the service life of the photovoltaic power supply cabinet.

[0053] As attached Figure 1 As shown, a wire outlet 133 is provided on the upper part of one side of the side panel 13, and its position corresponds to the space where the inverter mounting plate 3 is located, so as to facilitate the connection of the photovoltaic power supply cabinet with other equipment lines. A cut-proof wire sleeve 1331 is provided on the inner edge of the wire outlet 133 to protect the wire harness and prevent the wire harness from being cut or worn by the edge of the wire outlet 133.

[0054] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A photovoltaic power supply cabinet, characterized in that: include A cabinet body, comprising a cabinet door, a frame, side panels arranged on both sides of the frame and a back panel arranged on the back of the frame, wherein the cabinet door, the frame, the side panels and the back panel form an inner cavity for placing an inverter and a battery assembly; A plurality of mounting frames are symmetrically arranged on the inner walls of the side panels on both sides, and the mounting frames are detachably fixed to the inner walls of the side panels and / or the frame; An inverter mounting plate is detachably fixed between the mounting frames on both sides, and the inverter mounting plate is located on the upper part of the cabinet and is used to install the inverter; At least two partitions are detachably fixed between the mounting frames on both sides, and the partitions are vertically spaced and located below the inverter mounting plate for placing battery components; The inverter mounting plate and the partition plate are both spaced apart from the back plate.

2. The photovoltaic power supply cabinet according to claim 1, characterized in that: The inverter mounting plate is a box-type structure, comprising a front panel and a side panel, wherein the side panel surrounds four sides of the front panel and is bent backwards, and the front panel and the side panel are an integrated structure.

3. The photovoltaic power supply cabinet according to claim 2, characterized in that: The front panel is provided with a plurality of inverter mounting holes; the front panel is also provided with an integrated grounding bar; the inverter mounting holes and the integrated grounding bar are arranged side by side and spaced apart; The side panels are respectively provided with fixing holes corresponding to the mounting brackets, and there are at least two fixing holes on each side.

4. The photovoltaic power supply cabinet according to claim 1, characterized in that: An open storage space is formed on the partition located at the uppermost layer, for storing at least one group of battery components, and the open storage space is communicated with the space where the inverter mounting plate is located; A transverse open space is formed between adjacent partitions for accommodating at least one group of battery components. The transverse open space is connected to the space where the inverter mounting plate is located through the gap between the partition and the back plate.

5. The photovoltaic power supply cabinet according to claim 1, characterized in that: The mounting frame is also horizontally spaced apart with a row of positioning holes, and the two sides of the inverter mounting plate are detachably connected to at least one positioning hole on the mounting frame on the corresponding side; The two sides of the partition are detachably connected to at least two positioning holes on the corresponding mounting frame.

6. The photovoltaic power supply cabinet according to claim 1, characterized in that: Shutters with downward openings are provided on both sides of the side panels, and at least two shutters are provided on the upper and lower parts of each side panel, the position of the upper shutter corresponds to the inverter, and the position of the lower shutter corresponds to the battery assembly; The inner wall of the shutter is embedded with a mesh plate.

7. The photovoltaic power supply cabinet according to claim 1, characterized in that: The back plate is an integrated closed structure.

8. The photovoltaic power supply cabinet according to claim 1, characterized in that: A glass observation window is embedded in the top of the cabinet door.

9. The photovoltaic power supply cabinet according to claim 1, characterized in that: The frame comprises a transverse rod and a longitudinal rod, the longitudinal rod is provided with a plurality of mounting through holes at vertical intervals, and the mounting frame is detachably connected to the longitudinal rod through the mounting through holes; and / or The bottom of the cabinet is also provided with a heightened base, and the heightened base is connected to the bottom of the frame.

10. The photovoltaic power supply cabinet according to claim 1, characterized in that: A wire outlet is provided at an upper portion of one side of the side plate, and its position corresponds to the space where the inverter mounting plate is located. An anti-cutting wire sleeve is provided at the inner edge of the wire outlet.

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