Switching cabinet and energy storage system

Abstract

The utility model provides a switching cabinet and an energy storage system in the first aspect, the switching cabinet comprises a cabinet body, the cabinet body is provided with a first surface and a second surface, the second surface is provided with a first area and a second area, the first area is used for accommodating a plurality of energy storage switches arranged at intervals in the vertical direction, and the second area is used for accommodating cables connected with the plurality of energy storage switches. The plurality of energy storage switches are arranged in the vertical direction and installed in the first area, the height space of the cabinet body is utilized in the vertical direction to accommodate the bodies of the plurality of energy storage switches, the total space occupied by the plurality of energy storage switches is reduced, the width space of the cabinet body is utilized in the second direction to accommodate the cables of the plurality of energy storage switches, and the overall space occupied by the plurality of energy storage switches is reduced. The space utilization rate is improved. Therefore, the total space occupied by a plurality of energy storage switches can be reduced, the limitation of the energy storage switches on the specification of the cabinet body is reduced, standardized production is facilitated, and the production benefit is improved.

Description

Technical Field

[0001] This application relates to the field of photovoltaic energy storage system technology, and in particular to a switching cabinet and energy storage system. Background Technology

[0002] Currently, photovoltaic energy storage systems typically include a switching cabinet and multiple energy storage devices. The switching cabinet is used to realize the parallel connection and intelligent control of multiple energy storage devices, and also to realize the switching between grid-connected (connected to the grid) and off-grid (independent operation) modes of multiple energy storage devices, so that multiple energy storage devices can form a microgrid system.

[0003] A switching cabinet typically includes a cabinet, a control unit, and multiple energy storage switches, all housed within the cabinet. Different microgrid system solutions may include varying numbers of energy storage devices (e.g., 1-12 devices), and the number of energy storage switches is configured accordingly. However, the layout of the energy storage switches within the cabinet in related technologies is often inefficient, occupying a significant amount of space. This space significantly impacts the overall volume of the cabinet, limiting its design specifications, hindering standardized production, and ultimately affecting production efficiency. Utility Model Content

[0004] In view of the above, it is necessary to provide a switching cabinet and energy storage system to solve the above-mentioned defects.

[0005] The first aspect of this application provides a switching cabinet, including a cabinet body having a first side and a second side, the second side having a first region and a second region; the first side and the second side are arranged opposite to each other in a first direction, the first region and the second region are arranged along the second direction, and the first region extends in a vertical direction; the first region is used to accommodate a plurality of energy storage switches arranged at intervals in a vertical direction, and the second region is used to accommodate cables connected to the plurality of energy storage switches; wherein, there is an included angle between the first direction and the second direction, and both the first direction and the second direction are parallel to the horizontal direction.

[0006] In some embodiments, the cabinet is further provided with a third area and a fourth area, the third area for housing the control unit and the fourth area for housing the load switch and the mains switch.

[0007] In some embodiments, the third and fourth regions are located on the first surface.

[0008] In some embodiments, the third and fourth regions are arranged vertically.

[0009] In some embodiments, the third region and the fourth region are arranged along the second direction.

[0010] In some embodiments, the switching cabinet further includes a fan, with an air inlet on the first side and an air outlet on the second side, and the fan is disposed in the cabinet and located at the air outlet.

[0011] In some embodiments, the air inlet is located at the lower part of the first surface, and the air outlet is located at the upper part of the second surface.

[0012] In some embodiments, the upper part of the first surface is provided with a ventilation hole.

[0013] In some embodiments, the area of ​​the air vent is smaller than the area of ​​the air inlet.

[0014] The second aspect of this application provides an energy storage system, including multiple energy storage devices and a switching cabinet provided in the first aspect, wherein the multiple energy storage devices are respectively connected to the switching cabinet.

[0015] By arranging and installing multiple energy storage switches vertically within a first area, the cabinet's height is utilized to house the switches, reducing their overall space requirements. Furthermore, the cabinet's width is used to accommodate their cables, improving space utilization. This approach reduces the overall space occupied by the energy storage switches, lessens restrictions on cabinet dimensions, facilitates standardized production, and increases production efficiency. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of one specification of the switching cabinet in the related technology.

[0017] Figure 2 This is a structural schematic diagram of another specification of switching cabinet in related technologies.

[0018] Figure 3 This is a schematic diagram of the energy storage system provided in an embodiment of this application.

[0019] Figure 4 This is a structural schematic diagram of the first side of the switching cabinet provided in the first embodiment of this application.

[0020] Figure 5 This is a structural schematic diagram of the second side of the switching cabinet provided in the first embodiment of this application.

[0021] Figure 6 This is a structural schematic diagram of the side of the switching cabinet provided in the first embodiment of this application.

[0022] Figure 7 A schematic diagram of the switching cabinet provided in the first embodiment of this application applied to one of the microgrid systems.

[0023] Figure 8This is a schematic diagram of the switching cabinet provided in the first embodiment of this application applied to another microgrid system.

[0024] Figure 9 This is a structural schematic diagram of the second side of the switching cabinet provided in the second embodiment of this application.

[0025] Figure 10 A schematic diagram of the second side of the switching cabinet provided in the third embodiment of this application.

[0026] Figure 11 A schematic diagram of the second side of the switching cabinet provided in the fourth embodiment of this application.

[0027] Explanation of main component symbols

[0028] 100. Switching cabinet; 101. First zone; 102. Second zone; 103. Third zone; 104. Fourth zone; 105. Fifth zone; 10. Cabinet; 11. First side; 12. Second side; 13. Air inlet; 14. Air outlet; 15. Air vent; 20. Energy storage switch; 30. Control unit; 31. Adapter terminal; 32. Power module; 33. Communication module; 34. Sampling module; 35. Control module; 36. Control switch; 37. Uninterruptible power supply module; 40. Load switch; 50. Mains switch; 60. Fan; 200. Energy storage device. Detailed Implementation

[0029] The technical solutions of the embodiments of this application 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 this application, and not all of the embodiments.

[0030] In the description of the embodiments in this application, the words "exemplary" or "for example" are used to indicate that they are examples, illustrations, or descriptions. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design options. Specifically, the use of the words "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0031] Currently, switching cabinets typically include a cabinet, a control unit, and multiple energy storage switches, all housed within the cabinet. The multiple energy storage switches are located at the back of the switching cabinet and are arranged horizontally at intervals. A large space is left between the bottom of the energy storage switches and the bottom of the cabinet for cable storage.

[0032] This layout results in multiple energy storage switches occupying a large amount of space in the horizontal direction. The cabinet needs to reserve enough space for multiple energy storage switches, which has a significant impact on the overall volume of the cabinet. This limits the cabinet's specifications and design, hinders standardized production, and makes it difficult to achieve a standardized switching cabinet design.

[0033] In practical applications, different microgrid system solutions may include different numbers of energy storage devices, and the number of energy storage switches is configured according to the number of energy storage devices. However, because multiple energy storage switches limit the size design of the cabinet, different microgrid systems require different specifications of switching cabinets.

[0034] For example, we define different microgrid systems as microgrid system A and microgrid system B, where microgrid system A requires 12 energy storage switches 20 and microgrid system B requires 10 energy storage switches 20.

[0035] Figure 1 This is a structural schematic diagram of one specification of the switching cabinet in the related technology. Figure 2 This is a structural schematic diagram of another specification of switching cabinet in related technologies.

[0036] like Figure 1 and Figure 2 As shown, cabinets of different specifications are defined as cabinet 10A and cabinet 10B. Cabinet 10A can accommodate 12 energy storage switches 20, and cabinet 10B can accommodate 10 energy storage switches 20. The volume of cabinet 10A is larger than that of cabinet 10B, and the difference in volume is significant.

[0037] If a non-standardized design is adopted, different microgrid systems will use cabinets of different specifications. For example, microgrid system A will use cabinet 10A to house 12 energy storage switches 20, while microgrid system B will use cabinet 10B to house 10 energy storage switches 20. Since different cabinet specifications need to be designed and manufactured separately, the production cost will be high, affecting production efficiency.

[0038] If a standardized design is adopted, different microgrid systems will use the same cabinet specifications. That is, microgrid system A will use cabinet 10A to house 12 energy storage switches 20, and microgrid system B will use cabinet 10A to house 10 energy storage switches 20. The cabinet 10A used in microgrid system A wastes a lot of internal space, and cabinet 10A itself requires more floor space than cabinet 10B.

[0039] It is evident that the layout of the energy storage switch 20 within the cabinet in the relevant technology is unreasonable. The total space occupied by the energy storage switch 20 is relatively large, which has a significant impact on the overall volume of the cabinet, restricting the cabinet's specification design and affecting production efficiency.

[0040] Therefore, this application first provides a switching cabinet and energy storage system, which has the technical effect of optimizing internal space layout and improving production efficiency.

[0041] Figure 3 This is a schematic diagram of the energy storage system provided in an embodiment of this application.

[0042] like Figure 3 As shown, this application embodiment first provides a switching cabinet 100. The switching cabinet 100 is applied to an energy storage system, which includes the switching cabinet 100 and multiple energy storage devices 200. The multiple energy storage devices 200 are respectively connected to the switching cabinet 100.

[0043] Figure 4 This is a structural schematic diagram of the first side of the switching cabinet provided in the first embodiment of this application. Figure 5 This is a structural schematic diagram of the second side of the switching cabinet provided in the first embodiment of this application.

[0044] Please refer to the following: Figure 4 and Figure 5 The switching cabinet 100 has a built-in energy storage switch 20, a control unit 30, a load switch 40 and a mains switch 50. The energy storage switch 20 is electrically connected to the energy storage device 200, and the energy storage switch 20, the load switch 40 and the mains switch 50 are all electrically connected to the control unit 30.

[0045] The switching cabinet 100 enables multiple energy storage devices 200 to form a parallel power supply and connect to the mains power and loads in a microgrid system. The control unit 30 can control the switching status of the mains power switch 50 and the load switch 40 to realize the on / off grid switching and intelligent control functions of the microgrid system.

[0046] In this embodiment, the switching cabinet 100 includes a cabinet 10, an energy storage switch 20, a control unit 30, a load switch 40, and a mains switch 50. The energy storage switch 20, control unit 30, load switch 40, and mains switch 50 are all housed within the cabinet 10. In this example, the number of energy storage switches 20 is 12. In other embodiments, the number of energy storage switches 20 can be adjusted according to the number of energy storage devices 200 (e.g., 3 / 6 / 10 / 12 / 14).

[0047] Figure 6 This is a structural schematic diagram of the side of the switching cabinet provided in the first embodiment of this application.

[0048] Please refer to the following: Figure 6The cabinet 10 has a first surface 11 and a second surface 12. The second surface 12 is provided with a first region 101 and a second region 102. The first surface 11 and the second surface 12 are arranged opposite each other in a first direction, and the first region 101 and the second region 102 are arranged along a second direction, with the first region 101 extending vertically. The first region 101 is used to accommodate a plurality of energy storage switches 20 arranged at intervals in a vertical direction, and the second region 102 is used to accommodate the cables connected to the plurality of energy storage switches 20.

[0049] The first direction and the second direction form an angle between them, and both directions are parallel to the horizontal direction. The first direction is exemplified by the X-axis shown in the figure, the second direction by the Y-axis shown in the figure, and the vertical direction by the Z-axis shown in the figure.

[0050] For example, the cabinet 10 is generally rectangular, with its front side forming a first surface 11 and its back side forming a second surface 12. The cabinet 10 is defined to have a height, width, and depth, wherein the height direction of the cabinet 10 is parallel to the vertical direction, the depth direction is parallel to the first direction, and the width direction is parallel to the second direction. In the example of this application, the first region 101 and the second region 102 are distributed horizontally on the second surface 12.

[0051] By arranging and installing multiple energy storage switches 20 vertically within the first area 101, the height of the cabinet 10 is used to house the bodies of the multiple energy storage switches 20, reducing the total space occupied by the switches. Furthermore, the width of the cabinet 10 is used to house the cables of the switches, improving space utilization. This reduces the total space occupied by the switches 20, lessens the limitations imposed on the cabinet 10's dimensions, facilitates standardized production, and improves production efficiency.

[0052] Figure 7 A schematic diagram of the switching cabinet provided in the first embodiment of this application applied to one of the microgrid systems. Figure 8 This is a schematic diagram of the switching cabinet provided in the first embodiment of this application applied to another microgrid system.

[0053] Please refer to the following: Figure 7 and Figure 8 For example, we define different microgrid systems as microgrid system A' and microgrid system B', where microgrid system A' requires 12 energy storage switches 20 and microgrid system B' requires 10 energy storage switches 20.

[0054] The cabinet 10 can accommodate 12 energy storage switches 20.

[0055] When the cabinet 10 is used as cabinet 10A' in microgrid system A', the first area 101 in cabinet 10A' houses 12 energy storage switches 20 arranged in a vertical direction.

[0056] When the cabinet 10 is used as cabinet 10A'' in microgrid system B', the first area 101 in cabinet 10A'' houses 10 energy storage switches 20 arranged in a vertical direction.

[0057] Since each energy storage switch 20 is arranged vertically, the wasted space in the cabinet 10 is reduced, and the cabinet 10 itself occupies a small space. This allows for a standardized production design that is compatible with the needs of different numbers of energy storage devices 200 to form a microgrid system. This effectively reduces design and manufacturing costs and improves production efficiency.

[0058] In one embodiment, the first side 11 and the second side 12 of the cabinet 10 are both provided with a switch door. By opening the corresponding switch door, the cabinet 10 can be opened from the first side 11 or the second side 12 to facilitate the inspection and maintenance of the internal components of the cabinet 10.

[0059] In one embodiment, the bottom of the cabinet 10 is provided with a cable inlet, through which cables from outside the cabinet 10 can enter the cabinet 10 and connect to components such as the energy storage switch 20, the load switch 40, and the mains switch 50.

[0060] In one embodiment, the cabinet 10 is further provided with a third region 103 and a fourth region 104, which are located on the first surface 11. The third region 103 is used to house the control unit 30, and the fourth region 104 is used to house the load switch 40 and the mains switch 50. The cabinet 10 is also provided with a fifth region 105, which is located below the fourth region 104, and is used to house the cables connected to the load switch 40 and the mains switch 50.

[0061] Thus, the control unit 30, load switch 40 and mains switch 50 are arranged on the front of the cabinet 10, and the energy storage switch 20 is arranged on the back of the cabinet 10. The energy storage switch 20, control unit 30, load switch 40 and mains switch 50 are respectively housed in the depth space of the cabinet 10, which further improves the space utilization and reduces the overall volume of the cabinet 10.

[0062] In one embodiment, the control unit 30 includes one or more combinations of an adapter terminal 31, a power module 32, a communication module 33, a sampling module 34, a control module 35, a control switch 36, and an uninterruptible power supply module 37 (also known as a UPS module). In the example of this application, the control unit 30 integrates the adapter terminal 31, the power module 32, the communication module 33, the sampling module 34, the control module 35, the control switch 36, and the uninterruptible power supply module 37. In other embodiments, the components of the control unit 30 may be adjusted according to actual needs.

[0063] In one embodiment, a conductor is provided in the middle of the cabinet 10. The conductor is located between the load switch 40, the mains switch 50 and the energy storage switch 20, and the load switch 40, the mains switch 50 and the energy storage switch 20 are interconnected through the conductor.

[0064] In one embodiment, the third region 103 and the fourth region 104 are arranged vertically. For example, the third region 103 and the fourth region 104 are arranged vertically, the control unit 30 is located above the load switch 40 and the mains switch 50, and the fifth region 105 is located below the load switch 40 and the mains switch 50 and has space provided for accommodating cables connected to the load switch 40 and the mains switch 50.

[0065] In this way, by utilizing the height space of the cabinet 10 to accommodate the control unit 30, load switch 40, mains switch 50 and cables, the space utilization rate can be further improved and the overall volume of the cabinet 10 can be reduced.

[0066] In one embodiment, the switching cabinet 100 further includes a fan 60. A first side 11 has an air inlet 13, and a second side 12 has an air outlet 14. The fan 60 is mounted on the cabinet body 10 and located at the air outlet 14. For example, the air inlet 13 is located on the first side 11 of the cabinet body 10 or on a door of the first side 11. The air inlet 13 is elongated and extends along the width of the cabinet body 10. The air outlet 14 is located on the second side 12 of the cabinet body 10 or on a door of the second side 12. The fan 60 is fixed to the cabinet body 10. The air inlet end of the fan 60 is located at the bottom and faces downwards towards the middle of the cabinet body 10. The air outlet end of the fan 60 is located on the side facing the air outlet 14 and extends outwards through the air outlet 14 towards the outside of the cabinet body 10.

[0067] When the fan 60 is working, the air outside the cabinet 10 can enter the cabinet 10 through the air inlet 13 on the first side 11, and the air inside the cabinet 10 can pass through the air outlet 14 on the second side 12, thus forming an airflow through the cabinet 10 to dissipate heat from the components inside the cabinet 10 and ensure the safe operation of the equipment.

[0068] In one embodiment, the air inlet 13 is located at the lower part of the first surface 11, and the air outlet 14 is located at the upper part of the second surface 12, so that the air inlet 13 and the air outlet 14 are diagonally distributed.

[0069] When the fan 60 is working, the airflow can enter the cabinet 10 from the lower part of the first surface 11, then rise through the middle of the cabinet 10, and then exit the cabinet 10 from the upper part of the second surface 12. In this way, the airflow passes through the interior of the cabinet 10 from bottom to top, so that the airflow can pass through multiple energy storage switches 20 in a vertical direction and carry away heat, thereby improving the heat dissipation effect.

[0070] In one embodiment, an air vent 15 is provided on the upper part of the first surface 11. For example, the air vent 15 is located on a door on the first surface 11, and there are multiple air vents 15 arranged at intervals between them. When the fan 60 is operating, air from outside the cabinet 10 can also enter the cabinet 10 through the air vents 15 on the first surface 11, accelerating airflow and improving heat dissipation performance.

[0071] In one embodiment, the area of ​​the vent 15 is smaller than the area of ​​the inlet 13. Specifically, the area of ​​a single vent is smaller than the total area of ​​the inlet 13. Thus, the airflow entering the cabinet 10 through the vent 15 is less than the airflow entering the cabinet 10 through the inlet 13.

[0072] It is understandable that in actual operation, the heat at the load switch 40 and the mains switch 50 may be greater than the heat at the control unit 30. By utilizing the air volume distribution between the air vent 15 and the air inlet 13, while ensuring the heat dissipation effect of the control unit 30, a larger air volume can be carried away from the load switch 40 and the mains switch 50 through the air inlet 13, and at the same time, a sufficiently large air volume can be provided to pass through the inside of the cabinet 10 from bottom to top to improve the heat dissipation performance.

[0073] Figure 9 This is a structural schematic diagram of the second side of the switching cabinet provided in the second embodiment of this application.

[0074] Please refer to the following: Figure 9 The difference between the second embodiment and the first embodiment includes that the third region 103 and the fourth region 104 are arranged along the second direction. For example, the third region 103 and the fourth region 104 are distributed left and right, with the control unit 30 located on one side of the load switch 40 and the mains switch 50. Thus, the control unit 30, the load switch 40, and the mains switch 50 are accommodated within the width of the cabinet 10.

[0075] Figure 10 A schematic diagram of the second side of the switching cabinet provided in the third embodiment of this application.

[0076] Please refer to the following: Figure 10 The difference between the third embodiment and the first embodiment includes: the third region 103 and the fourth region 104 are located on the second surface 12, the third region 103 and the fourth region 104 are arranged vertically, and the third region 103, the first region 101 and the second region 102 are arranged horizontally. The second surface 12 can be the front of the cabinet 10, that is, the first region 101, the second region 102, the third region 103 and the fourth region 104 are all located on the front of the cabinet 10.

[0077] For example, the third region 103 and the fourth region 104 are arranged vertically, with the control unit 30 located above the load switch 40 and the mains switch 50, and the control unit 30, load switch 40, and mains switch 50 all located on one side of the energy storage switch 20. In this way, the energy storage switch 20, control unit 30, load switch 40, and mains switch 50 are respectively housed within the width of the cabinet 10.

[0078] Figure 11 This is a structural schematic diagram of the second side of the switching cabinet provided in the fourth embodiment of this application.

[0079] Please refer to the following: Figure 11 The fourth embodiment differs from the first embodiment in that the third region 103 and the fourth region 104 are located on the second surface 12, and the first region 101, the second region 102, the third region 103, and the fourth region 104 are arranged horizontally. The second surface 12 can be the front of the cabinet 10, meaning that the first region 101, the second region 102, the third region 103, and the fourth region 104 are all located on the front of the cabinet 10.

[0080] For example, the first region 101 and the second region 102 are located between the third region 103 and the fourth region 104. The load switch 40 and the mains switch 50 are located on one side of the energy storage switch 20, and the control unit 30 is located on the other side of the energy storage switch 20. In this way, the energy storage switch 20, the control unit 30, the load switch 40, and the mains switch 50 are respectively housed within the width space of the cabinet 10.

[0081] like Figures 3 to 5 As shown in the illustration, this application also provides an energy storage system. The energy storage system includes multiple energy storage devices 200 and a switching cabinet 100 as described in any of the above embodiments. The multiple energy storage devices 200 are respectively connected to the switching cabinet 100. The switching cabinet 100 has an energy storage switch 20, a control unit 30, a load switch 40, and a mains switch 50 built in it. The energy storage switch 20 is electrically connected to the energy storage devices 200, and the energy storage switch 20, the load switch 40, and the mains switch 50 are all electrically connected to the control unit 30.

[0082] The switching cabinet 100 enables multiple energy storage devices 200 to form a parallel power supply and connect to the mains power and loads in a microgrid system. The control unit 30 can control the switching status of the mains power switch 50 and the load switch 40 to realize the on / off grid switching and intelligent control functions of the microgrid system.

[0083] The working principle and beneficial effects of the switching cabinet 100 provided in this application embodiment can be found in the relevant descriptions in the foregoing embodiments, and will not be repeated here.

[0084] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments described above should be considered exemplary and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this application.

Claims

1. A switching cabinet, characterized in that, The device includes a cabinet having a first side and a second side, the second side having a first region and a second region; the first side and the second side are arranged opposite each other in a first direction, the first region and the second region are arranged along a second direction, and the first region extends in a vertical direction; The first region is used to accommodate a plurality of energy storage switches arranged at intervals along a vertical direction, and the second region is used to accommodate cables connected to the plurality of energy storage switches; wherein, there is an angle between the first direction and the second direction, and both the first direction and the second direction are parallel to the horizontal direction.

2. The switching cabinet as described in claim 1, characterized in that, The cabinet is also provided with a third area and a fourth area. The third area is used to house the control unit, and the fourth area is used to house the load switch and the mains switch.

3. The switching cabinet as described in claim 2, characterized in that, The third region and the fourth region are located on the first surface.

4. The switching cabinet as described in claim 2, characterized in that, The third region and the fourth region are arranged in a vertical direction.

5. The switching cabinet as described in claim 2, characterized in that, The third region and the fourth region are arranged along the second direction.

6. The switching cabinet as described in any one of claims 1 to 5, characterized in that, The switching cabinet also includes a fan, with an air inlet on the first side and an air outlet on the second side. The fan is mounted on the cabinet and located at the air outlet.

7. The switching cabinet as described in claim 6, characterized in that, The air inlet is located at the lower part of the first surface, and the air outlet is located at the upper part of the second surface.

8. The switching cabinet as described in claim 7, characterized in that, The upper part of the first side is provided with ventilation holes.

9. The switching cabinet as described in claim 8, characterized in that, The area of ​​the air vent is smaller than the area of ​​the air inlet.

10. An energy storage system, characterized in that, It includes multiple energy storage devices and a switching cabinet as described in any one of claims 1 to 9, wherein the multiple energy storage devices are respectively connected to the switching cabinet.

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