Air-cooled energy storage converter

Abstract

The invention relates to the technical field of outdoor air-cooled converters, in particular to an air-cooled energy storage converter. The frame cabinet body comprises a lower-layer frame, a middle-layer frame and an upper-layer frame which are spliced in sequence; the air inlet assembly comprises a first air inlet and a second air inlet which are oppositely formed in the upper-layer frame in the width direction of the frame cabinet body; the air outlet assembly comprises a first air outlet and a second air outlet which are oppositely formed in the lower-layer frame in the width direction of the frame cabinet body, and a third air outlet formed in the middle-layer frame; the third air outlet and the second air inlet are positioned on the same side of the frame cabinet body; the air inlet assembly, the air outlet assembly and the fan driving assembly form a plurality of air channels, continuous and effective heat dissipation can be performed on the energy storage converter in a field environment, the operation reliability is high, and the energy storage converter can be maintained at a relatively low safe temperature so as to ensure normal operation of the energy storage converter.

Description

Technical Field

[0001] This invention relates to the field of outdoor air-cooled converter technology, and specifically to an air-cooled energy storage converter. Background Technology

[0002] With the increase in renewable energy generation, the demand for energy storage converters to meet power supply and demand is correspondingly increasing. The output characteristics of renewable energy are random and fluctuating due to the influence of the natural environment, making it difficult to provide system regulation capabilities. Meanwhile, the power grid needs to be regulated according to the power output of generator units and electricity demand to maintain stable operation at 50Hz. To maintain the safe temperature required for stable output, most existing energy storage converters use liquid cooling, requiring additional chillers and corresponding water-cooling pipes, resulting in poor reliability in outdoor environments. Summary of the Invention

[0003] The purpose of this invention is to provide an air-cooled energy storage converter, which forms multiple air ducts through an air intake component, an air outlet component, and a fan drive component, enabling continuous and effective heat dissipation of the energy storage converter in outdoor environments. It has high operational reliability and allows the energy storage converter to be maintained at a low safe temperature to ensure its normal operation.

[0004] This invention provides an air-cooled energy storage converter, comprising: The frame cabinet consists of a lower frame, a middle frame, and an upper frame that are assembled sequentially. The air intake assembly includes a first air inlet and a second air inlet that are disposed opposite to each other on the upper frame along the width direction of the frame cabinet; The air outlet assembly includes a first air outlet and a second air outlet disposed opposite to each other on the lower frame along the width direction of the frame cabinet, and a third air outlet disposed on the middle frame; the third air outlet and the second air inlet are located on the same side of the frame cabinet. The fan drive assembly is used to drive external air entering the upper frame through the first air inlet to pass through the upper frame, the middle frame and the lower frame in sequence and be discharged through the first air outlet and the second air outlet; it is also used to drive external air entering the upper frame through the second air inlet to pass through the upper frame and the middle frame in sequence and be discharged through the third air outlet; it is also used to drive internal air in the middle frame to be discharged through the third air outlet.

[0005] Optionally, it also includes: The IGBT module is located in the middle of the middle layer frame; The capacitor module is located within the middle frame, near the third air outlet. The heat exchange core is located outside the middle frame, near the third air outlet. The reactor is located in the middle of the lower frame.

[0006] Optionally, air inlet hoods are provided on the outer sides of both the first and second air inlets.

[0007] Optionally, the air inlet hood includes an air inlet hood outer shell installed outside the upper frame, an air inlet hood inner shell installed inside the upper frame, and an air inlet hood wire mesh disposed between the air inlet hood outer shell and the air inlet hood inner shell.

[0008] Optionally, both the first and second air outlets are provided with air outlet duct wire mesh.

[0009] Optionally, the fan drive assembly includes a first fan disposed within the upper frame and located between the first air inlet and the second air inlet, a second fan disposed within the middle frame near the third air outlet, and a third fan disposed within the upper frame near the second air inlet.

[0010] Optionally, the upper frame includes a flat top cover plate, the edge of which is provided with a flat top water-retaining edge, and the bottom surface of the flat top cover plate is provided with a first flat top latch; the top surface of the side wall of the upper frame is provided with a flat top positioning device for positioning the flat top cover plate and a second flat top latch for positioning and connecting with the first flat top latch.

[0011] Optionally, the top surface of the flat-top cover plate is provided with flat-top rollers.

[0012] Optionally, the side of the frame cabinet is provided with a side sealing plate for closing the frame cabinet. The side sealing plate is positioned and connected to the middle frame by a locking device, and the edge of the side sealing plate is provided with a water-blocking edge.

[0013] Optionally, a reinforcing beam is welded to the inner side of the side sealing plate.

[0014] Optionally, a sealing foam is provided between the side panel and the middle frame.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This invention utilizes a first and second air inlet positioned opposite each other on the upper frame, a first and second air outlet positioned opposite each other on the lower frame, and a third air outlet positioned on the middle frame. These, along with a fan drive assembly, form three air ducts within the cabinet frame to provide continuous and stable heat dissipation for the components inside the cabinet. This ensures the energy storage converter maintains a low, safe temperature, guaranteeing its normal operation. Furthermore, this invention employs a detachable flat-top cover for easier maintenance, and side sealing plates on the outer side of the cabinet frame enhance the overall protective performance of the cabinet. Attached Figure Description

[0016] Figure 1 An isometric view of an air-cooled energy storage converter provided in an embodiment of the present invention; Figure 2 A schematic diagram of the air duct of an air-cooled energy storage converter provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the air inlet and air outlet components of an air-cooled energy storage converter provided in an embodiment of the present invention. Figure 4 This is a schematic diagram of the structure of a flat-top cover plate of an air-cooled energy storage converter provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the side sealing plate of an air-cooled energy storage converter provided in an embodiment of the present invention.

[0017] Numbering on the map: 1. Flat top cover plate; 101. Flat top water-retaining edge; 102. First flat top latch; 103. Flat top roller; 104. Flat top positioning device; 105. Second flat top latch; 2. Air inlet hood; 21. Air inlet hood outer shell; 22. Air inlet hood wire mesh; 23. Air inlet hood inner shell; 3. First fan; 4. Upper frame; 41. First air inlet; 42. Second air inlet; 5. IGBT mold Group; 6. Middle frame; 61. Third air outlet; 7. Reactor; 8. Lower frame; 81. First air outlet; 82. Second air outlet; 9. Lifting hole; 10. Steel wire mesh for air outlet duct; 11. Air outlet hood; 12. Second fan; 13. Capacitor module; 14. Heat exchange core; 15. Third fan; 16. Side sealing plate; 161. Locking device; 162. Water-blocking edge; 163. Reinforcing beam. Detailed Implementation

[0018] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0019] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0020] Secondly, the present invention will be described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure will be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0021] Furthermore, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments.

[0022] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0023] To make the purpose, technical solution, and advantages of this invention patent clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0024] Combination Figure 1 This embodiment provides an air-cooled energy storage converter, which includes a frame cabinet, an air inlet assembly, an air outlet assembly, and a fan drive assembly. The cabinet frame adopts an independent compartment frame design (DC devices and AC devices are respectively concentrated in one area), and the weight of the devices (ensuring that the cabinet frame has sufficient mechanical strength to support all devices) and the heat dissipation method (different devices have different placement positions and heat dissipation methods, and the corresponding air duct settings need to meet the heat dissipation requirements of different devices) are checked. The AC and DC devices are distributed in a close proximity manner (devices with electrical connections are placed as close as possible).

[0025] Specifically, the cabinet frame includes a lower frame 8, a middle frame 6, and an upper frame 4 connected in sequence; the lower frame 8 is provided with lifting holes 9 for connecting external lifting equipment to lift the frame cabinet. The air inlet assembly includes a first air inlet 41 and a second air inlet 42 disposed opposite to each other on the upper frame 4 along the width direction of the frame cabinet; the air outlet assembly includes a first air outlet 81 and a second air outlet 82 disposed opposite to each other on the lower frame 8 along the width direction of the frame cabinet, and a third air outlet 61 disposed on the middle frame 6; the third air outlet 61 and the second air inlet 42 are located on the same side of the frame cabinet; the fan drive assembly includes a first fan 3 disposed in the upper frame 4 between the first air inlet 41 and the second air inlet 42, a second fan 12 disposed in the middle frame 6 near the third air outlet 61, and a third fan 15 disposed in the upper frame 4 near the second air inlet 42. An IGBT module 5 is located in the middle of the middle frame 6; a capacitor module 13 is located in the middle frame 6 near the third air outlet 61; a heat exchange core 14 is located outside the middle frame 6 near the third air outlet 61; and a reactor 7 is located in the middle of the lower frame 8.

[0026] Combination Figure 2In this embodiment, the air-cooled energy storage converter, driven by the fan drive assembly, forms three air ducts to dissipate heat from the components inside the cabinet during actual operation. The first air duct: external air entering the upper frame 4 through the first air inlet 41 passes sequentially through the upper frame 4, the middle frame 6, and the lower frame 8, and exits through the first air outlet 81 and the second air outlet 82. The second air duct: external air entering the upper frame 4 through the second air inlet 42 passes sequentially through the upper frame 4 and the middle frame 6, and exits through the third air outlet 61. The third air duct: internal air within the middle frame 6 exits through the third air outlet 61. This air-cooled energy storage converter, by setting up three air ducts, can continuously and stably dissipate heat from the orderly arranged AC and DC components inside the cabinet. Actual testing shows that the heat dissipation effect effectively covers the heat generated by the components inside the cabinet, thereby maintaining the energy storage converter at a low, safe temperature to ensure its normal operation.

[0027] Combination Figure 3 In this embodiment, air inlets 41 and 42 are each equipped with an air inlet hood 2 on their outer sides. The air inlet hood 2 includes an outer shell 21 installed outside the upper frame 4, an inner shell 23 installed inside the upper frame 4, and a wire mesh 22 between the outer shell 21 and the inner shell 23. Air outlets 81 and 82 are each equipped with an air outlet duct wire mesh 10. An air outlet hood 11 is provided at the third air outlet 61. In this embodiment, both the first air inlet 41 and 42 are equipped with grille-type dustproof and ash-proof air inlet louvers. An air guide grille is provided on the outer side of the air inlet hood 2, and the internal wire mesh is used for filtration. The first air outlet 81 and 82 are extended to reduce hot air recirculation and achieve directional exhaust.

[0028] Combination Figure 4 In this embodiment, the upper frame 4 includes a flat top cover plate 1. The edge of the flat top cover plate 1 is provided with a flat top water-retaining edge 101, and the bottom surface of the flat top cover plate 1 is provided with a first flat top latch 102. The top surface of the side wall of the upper frame 4 is provided with a flat top positioning device 104 for positioning the flat top cover plate 1 and a second flat top latch 105 for positioning and connecting with the first flat top latch 102. The top surface of the flat top cover plate 1 is also provided with flat top rollers 103. During maintenance, operators can directly remove the flat top cover plate 1 using the first flat top latch 102 and the second flat top latch 105 to repair the various components inside the cabinet, making maintenance more convenient.

[0029] Combination Figure 5Furthermore, to enhance the sealing and protection of the energy storage converter cabinet frame, the side of the frame cabinet is provided with a side sealing plate 16 for enclosing the frame cabinet. The side sealing plate 16 is positioned and connected to the middle frame 6 by a locking device 161. In a specific embodiment, the locking device 161 includes a protrusion for fixing with fasteners (bolts). The edge of the side sealing plate 16 is provided with a water-retaining edge 162 to prevent water from flowing into the cabinet frame along the surface of the side sealing plate 16, thereby protecting the internal components of the cabinet frame and improving the safety of the cabinet frame. The water-retaining edge 162 of the side sealing plate 16 is integrally formed with the side sealing plate 16 by stamping, bending, or welding. In addition, a reinforcing beam 163 is welded to the inner side of the side sealing plate 16, improving the protection of the entire cabinet frame. Furthermore, CIPG foam is provided between the side sealing plate 16 and the middle frame 6 for sealing.

[0030] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An air-cooled energy storage converter, characterized by, The application relates to a cabinet air conditioner, which comprises the following parts: a frame cabinet body, which comprises a lower layer frame (8), a middle layer frame (6) and an upper layer frame (4) connected in sequence; an air inlet assembly, which comprises a first air inlet (41) and a second air inlet (42) oppositely arranged on the upper layer frame (4) along the width direction of the frame cabinet body; an air outlet assembly, which comprises a first air outlet (81) and a second air outlet (82) oppositely arranged on the lower layer frame (8) along the width direction of the frame cabinet body, and a third air outlet (61) arranged on the middle layer frame (6); the third air outlet (61) and the second air inlet (42) are located on the same side of the frame cabinet body; a fan driving assembly, which is used for driving external air entering the upper layer frame (4) from the first air inlet (41) to pass through the upper layer frame (4), the middle layer frame (6) and the lower layer frame (8) in sequence and be discharged from the first air outlet (81) and the second air outlet (82); is also used for driving external air entering the upper layer frame (4) from the second air inlet (42) to pass through the upper layer frame (4) and the middle layer frame (6) in sequence and be discharged from the third air outlet (61); and is also used for driving internal air in the middle layer frame (6) to be discharged from the third air outlet (61).

2. The air-cooled energy storage converter of claim 1, wherein, The application further comprises: an IGBT module (5) arranged at a middle position in the middle layer frame (6); a capacitor module (13) arranged at a position close to one side of the third air outlet (61) in the middle layer frame (6); a heat exchange core (14) arranged at a position close to the third air outlet (61) outside the middle layer frame (6); a reactor (7) arranged at a middle position in the lower layer frame (8).

3. The air-cooled energy storage converter of claim 1, wherein, Air inlet hoods (2) are arranged outside the first air inlet (41) and the second air inlet (42).

4. The air-cooled energy storage converter of claim 3, wherein, The air inlet hood (2) comprises an air inlet hood outer shell (21) arranged outside the upper layer frame (4), an air inlet hood inner shell (23) arranged inside the upper layer frame (4) and an air inlet hood steel wire mesh (22) arranged between the air inlet hood outer shell (21) and the air inlet hood inner shell (23).

5. The air-cooled energy storage converter of claim 1, wherein, The fan driving assembly comprises a first fan (3) arranged in the upper layer frame (4) and located between the first air inlet (41) and the second air inlet (42), a second fan (12) arranged in the middle layer frame (6) and close to one side of the third air outlet (61), and a third fan (15) arranged in the upper layer frame (4) and close to one side of the second air inlet (42).

6. The air-cooled energy storage converter of claim 1, wherein, Air outlet duct steel wire meshes (10) are arranged at the first air outlet (81) and the second air outlet (82), and an air outlet hood (11) is arranged at the third air outlet (61).

7. The air-cooled energy storage converter of claim 1, wherein, The upper layer frame (4) comprises a flat top cover plate (1), the edge of the flat top cover plate (1) is provided with a flat top water retaining edge (101), the bottom surface of the flat top cover plate (1) is provided with a first flat top buckle (102); the top surface of the side wall of the upper layer frame (4) is provided with a flat top positioning device (104) for positioning the flat top cover plate (1) and a second flat top buckle (105) for positioning connection with the first flat top buckle (102); the top surface of the flat top cover plate (1) is provided with a flat top rolling rib (103).

8. The air-cooled energy storage converter of claim 1, wherein, The side of the frame cabinet body is provided with a side sealing plate (16) for closing the frame cabinet body, the side sealing plate (16) is positioned and connected through a locking device (161) and a middle layer frame (6), and the edge of the side sealing plate (16) is provided with a water retaining edge (162).

9. The air-cooled energy storage converter of claim 8, wherein, The inner side of the side sealing plate (16) is welded with a reinforcing beam (163).

10. The air-cooled energy storage converter of claim 8, wherein, Foaming glue for sealing is arranged between the side sealing plate (16) and the middle layer frame (6).

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