A variable current boosting device and energy storage power station

Abstract

The utility model provides a kind of current conversion boost equipment and energy storage power station, belong to current conversion boost equipment technical field, including pedestal, energy storage inverter unit and boost transformer unit.The side of pedestal is equipped with first air inlet;Energy storage inverter unit is fixed on pedestal, and located above first air inlet;The upper portion of at least one side plate of energy storage inverter unit is equipped with first air outlet;Boost transformer unit is fixed on pedestal, and the lower portion of at least one side plate of boost transformer unit is equipped with second air inlet, and the upper portion of at least one side plate is equipped with second air outlet;First ventilation structure is equipped between energy storage inverter unit inner chamber and pedestal inner chamber.The utility model's energy storage inverter unit uses the air inlet of first air inlet and first ventilation structure on pedestal, and energy storage inverter unit does not need to set air inlet, can completely avoid hot air to enter, and the airflow of other equipment cannot cause interference to energy storage inverter unit, effectively prevent temperature rise drop.

Description

Technical Field

[0001] This utility model belongs to the technical field of converter voltage boosting equipment, and more specifically, it relates to a converter voltage boosting equipment and an energy storage power station. Background Technology

[0002] The main equipment in a large-scale energy storage power station includes energy storage battery units and converter booster units. Given limited site space, the energy storage power station needs to provide the maximum energy storage capacity, so the distance between the various equipment units should be as small as possible. However, maintenance of the energy storage battery units and converter booster units requires reserved space, and air intake and exhaust space is also needed between the equipment units for heat dissipation. Therefore, the distance between the equipment units must meet the corresponding requirements.

[0003] Energy storage power stations have numerous equipment units, and the airflow between these units can interfere with each other. In particular, when the hot air outlet of one unit is opposite the cold air inlet of another unit, hot air can enter the unit, causing temperature rise and fall. Utility Model Content

[0004] The purpose of this utility model is to provide a converter booster device and an energy storage power station, which aims to solve the technical problem in the prior art where hot air entering the device causes temperature rise and fall.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a converter booster device, comprising: A base for fixing to the ground; the base is provided with a first air inlet; An energy storage inverter unit is fixed on the base; at least one side plate of the energy storage inverter unit has a first air outlet on its upper part; and A step-up transformer unit is fixed on the base and is spaced apart from the energy storage inverter unit along a first direction; at least one side plate of the step-up transformer unit has a second air inlet at the bottom and a second air outlet at the top. A first ventilation structure is provided between the inner cavity of the energy storage inverter unit and the inner cavity of the base.

[0006] In one possible implementation, the first ventilation structure includes: The first air inlet is located on the base plate of the energy storage inverter unit; The first ventilation opening is located on the top surface of the base and corresponds vertically to the first air passage.

[0007] In some embodiments, there is a gap between the base plate of the energy storage inverter unit and the top surface of the base; the opening area of ​​the first ventilation opening is greater than or equal to the opening area of ​​the first air passage, and less than the top surface area of ​​the base.

[0008] In some embodiments, the first ventilation structure further includes: The second air vent is located at the lower part of at least one side plate of the energy storage inverter unit and above the first air vent. The second ventilation opening is located on the top surface of the base and on the periphery of the energy storage inverter unit; and An air guide cover is installed over the second air inlet and the second ventilation opening.

[0009] In one possible implementation, the first air inlet is arranged around the four sides of the base; a second ventilation structure is provided between the inner cavity of the booster transformer and the inner cavity of the base.

[0010] In some embodiments, the bottom surface of the step-up transformer unit is open; the second ventilation structure includes a third ventilation opening on the top surface of the base, the opening area of ​​the third ventilation opening being smaller than the open area of ​​the bottom surface of the step-up transformer unit.

[0011] In one possible implementation, the inner cavity of the base is used for laying cables; the base is partially embedded below the ground and partially above the ground, and the first air inlet is provided on the side of the portion above the ground.

[0012] In one possible implementation, the side plate of the energy storage inverter unit that is perpendicular to the first direction and adjacent to the step-up transformer unit is defined as the first side plate; the first air outlet is disposed on at least one other side plate besides the first side plate.

[0013] In some embodiments, the side plate of the step-up transformer unit that is perpendicular to the first direction and adjacent to the energy storage inverter unit is defined as the second side plate; the second air inlet and the second air outlet are respectively disposed on at least one other side plate other than the second side plate.

[0014] The beneficial effects of the converter booster device provided by this utility model are as follows: Compared with the prior art, the converter booster device of this utility model allows the energy storage inverter unit to take in air through the first air inlet and the first ventilation structure on the base, and introduce cold air through the first air inlet on the side of the base. The cold air is then introduced from the inner cavity of the base into the inner cavity of the energy storage inverter unit through the first ventilation structure, and then the hot air is discharged from the first air outlet at the top. The energy storage inverter unit does not need to be equipped with an air inlet, which can completely prevent hot air from entering. The airflow of other equipment will not interfere with the energy storage inverter unit, effectively preventing the temperature rise and fall of the energy storage inverter unit. The first air outlet of the energy storage inverter unit is located at the top, the second air outlet of the step-up transformer unit is also located at the top, and the second air inlet of the step-up transformer unit is located at the bottom. By utilizing the natural principle that hot air rises and cold air sinks, the hot air discharged from the energy storage inverter unit and the step-up transformer unit diffuses upward, thereby reducing the risk of hot air directly entering the second air inlet and effectively preventing the temperature rise and fall of the step-up transformer unit.

[0015] This utility model also provides an energy storage power station, including multiple converter and booster devices as described above; the multiple converter and booster devices are distributed in a rectangular array.

[0016] The energy storage power station provided by this utility model, by adopting the above-mentioned converter and booster equipment, effectively avoids mutual interference of airflow between equipment and prevents equipment temperature rise and fall. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the structure of the converter booster device provided in this embodiment of the utility model; Figure 2 Another structural schematic diagram of the converter booster device provided in an embodiment of this utility model; Figure 3 for Figure 1 The diagram shows the structure of the energy storage inverter unit after removing one side panel and the air guide shroud after removing one side panel.

[0019] In the picture: 1. Base; 11. First air inlet; 2. Energy storage inverter unit; 21. First air outlet; 3. Step-up transformer unit; 31. Second air inlet; 32. Second air outlet; 41. First air inlet; 42. First ventilation opening; 43. Second air inlet; 44. Second ventilation opening; 45. Air guide hood; 51. Third ventilation opening; 100. Ground. Detailed Implementation

[0020] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] Please refer to the following: Figure 1 and Figure 2 The present invention provides a converter and booster device. The converter and booster device includes a base 1, an energy storage inverter unit 2, and a booster transformer unit 3. The base 1 is fixed to the ground 100; a first air inlet 11 is provided on the base 1; the energy storage inverter unit 2 is fixed to the base 1; at least one side plate of the energy storage inverter unit 2 has a first air outlet 21 on its upper part; the booster transformer unit 3 is fixed to the base 1 and is spaced apart from the energy storage inverter unit 2 along a first direction; at least one side plate of the booster transformer unit 3 has a second air inlet 31 on its lower part and a second air outlet 32 ​​on its upper part; wherein a first ventilation structure is provided between the inner cavity of the energy storage inverter unit 2 and the inner cavity of the base 1.

[0022] Base 1 provides a supporting foundation for the energy storage inverter unit 2 and the step-up transformer unit 3. Base 1 is a hollow structure, and its four edges protrude beyond the four edges of the energy storage inverter unit 2 in the horizontal direction. Since the step-up transformer unit 3 occupies a larger area, three sides of base 1 can be flush with three sides of the step-up transformer unit 3. Base 1 is fixed to the ground 100, and both units are fixed to base 1, ensuring structural stability. Furthermore, the primary ventilation structure ensures a clean airflow channel, reducing interference with airflow organization during maintenance.

[0023] The first ventilation structure can be an independent ventilation duct, which can concentrate the air volume and allow cold air to enter the inner cavity of the energy storage inverter unit 2 quickly and in large quantities; the first ventilation structure can also be a hole opened on the energy storage inverter unit 2 and a hole opened on the base 1, which can simplify the structure and reduce costs.

[0024] The core function of the energy storage inverter unit 2 is to perform current conversion and system control. During discharge (power supply to the grid), its main function is inversion, converting the low-voltage DC power from the energy storage battery unit into low-voltage AC power that meets grid requirements. During charging (power drawn from the grid), its function is rectification, converting the AC power from the grid into suitable DC power to charge the energy storage battery unit.

[0025] The core function of step-up transformer unit 3 is to increase the voltage level. It raises the low-voltage AC power (such as 315V, 400V, etc.) output by energy storage inverter unit 2 to medium or high voltage (such as 10kV or 35kV) to achieve the voltage level required for long-distance power transmission.

[0026] It should be noted that both the energy storage inverter unit 2 and the step-up transformer unit 3 are rectangular structures. The unit cabinet consists of six panels (front panel, rear panel, left panel, right panel, top panel, and bottom panel). The aforementioned side panel refers to one of the vertical side panels of the cabinet.

[0027] Both the energy storage inverter unit 2 and the transformer step-up unit adopt natural air cooling. The energy storage inverter unit 2 takes in air through the first ventilation port and the first ventilation structure. The first air inlet 11 on the side of the base 1 introduces cold air. The cold air is introduced from the inner cavity of the base 1 into the inner cavity of the energy storage inverter unit 2 through the first ventilation structure. The cold air passes through the electrical components inside the energy storage inverter unit 2 from bottom to top, taking away the heat of the electrical components. Then the hot air is discharged from the first air outlet 21 at the top.

[0028] The step-up transformer unit 3 takes in air from the second air inlet 31 at the bottom. The cold air passes through the internal electrical components, carrying away the heat from the components. The hot air exits from the second air outlet 32 ​​at the top, forming a heat dissipation path from bottom to top.

[0029] Compared with the prior art, the converter booster device provided by this utility model allows the energy storage inverter unit 2 to take in air by using the first air inlet 11 and the first ventilation structure on the base 1, without the need to set up an air inlet, which can completely avoid the entry of hot air. The airflow of other equipment will not interfere with the energy storage inverter unit 2, effectively preventing the temperature rise and fall of the energy storage inverter unit 2. The first air outlet 21 of the energy storage inverter unit 2 is located at the top, the second air outlet 32 ​​of the step-up transformer unit 3 is also located at the top, and the second air inlet 31 of the step-up transformer unit 3 is located at the bottom. By utilizing the natural principle that hot air rises and cold air sinks, the hot air discharged from the energy storage inverter unit 2 and the step-up transformer unit 3 diffuses upward, thereby reducing the risk of hot air directly entering the second air inlet 31 and effectively preventing the temperature rise and fall of the step-up transformer unit 3. Meanwhile, the energy storage inverter unit 2 and the step-up transformer unit 3 are distributed at intervals along the first direction, which further reduces the possibility of mutual interference of airflow.

[0030] In some embodiments, the first ventilation structure described above may employ, for example... Figure 3 The structure shown is described in the following document. Figure 3 The first ventilation structure includes a first air inlet 41 and a first ventilation opening 42. The first air inlet 41 is located on the base plate of the energy storage inverter unit 2; the first ventilation opening 42 is located on the top surface of the base 1.

[0031] It should be noted that the aforementioned base plate refers to the base plate of the cabinet of the energy storage inverter unit 2.

[0032] The first vent 42 and the first air outlet 41 are channels connecting the inner cavity of the base 1 and the inner cavity of the energy storage inverter unit 2, forming a vertical heat dissipation path from bottom to top together with the first air inlet 11 and the first air outlet 21. Ambient cool air enters the inner cavity of the base 1 through the first air inlet 11, passes through the first vent 42 and the first air outlet 41 into the inner cavity of the energy storage inverter unit 2, flows past the heat-generating electrical components of the energy storage inverter unit 2, and is discharged from the first air outlet 21 at the top. Utilizing the principle that hot air, being less dense, naturally rises, cool air is injected from the bottom and hot air is discharged from the top, resulting in minimal heat dissipation resistance and maximum efficiency.

[0033] The first vent 42 and the first air vent 41 together define a forced cooling airflow path. After cold air enters the inner cavity of the base 1 through the first air inlet 11 on the side of the base 1, it cannot diffuse freely and can only flow upwards through the first vent 42, and then enter its interior through the first air vent 41. This forced cooling airflow path helps maintain air pressure, ensuring sufficient airflow through the inner cavity of the energy storage inverter unit 2, achieving forced air cooling.

[0034] In some embodiments, the energy storage inverter unit 2 and the base 1 can also be connected by, for example, Figure 3 The structure shown is described in the following document. Figure 3 There is a gap between the base plate of the energy storage inverter unit 2 and the top surface of the base 1; the opening area of ​​the first ventilation opening 42 is greater than or equal to the opening area of ​​the first air passage 41, and less than the top surface area of ​​the base 1.

[0035] The distance between the base plate and the top surface of the base 1, together with the relatively large first ventilation opening 42, forms a flat static pressure box or equalization chamber located below the energy storage inverter unit 2. Cooling air from the inner cavity of the base 1 first enters this equalization chamber through the first ventilation opening 42, undergoes brief mixing and pressure equalization in this small space, and then enters the interior of the energy storage inverter unit 2 through the first air vent 41.

[0036] If the first vent 42 is directly adjacent to the first air vent 41, the airflow will be concentrated at a high speed from the first vent 42 to the first air vent 41, resulting in uneven airflow distribution. Only the area directly opposite the first air vent 41 may be effectively cooled. However, through the buffering of the equalization chamber, the airflow velocity is reduced, and the static pressure tends to be uniform. This allows cold air to enter the energy storage inverter unit 2 smoothly and evenly from the entire area of ​​the first air vent 41, increasing the intake air volume.

[0037] In fluid mechanics, when airflow moves from a larger cross-section to a smaller cross-section, it contracts, resulting in energy loss. Designing the opening area of ​​the first vent 42 to be greater than or equal to the opening area of ​​the first air passage 41 ensures a smoother contraction effect when airflow enters the first air passage 41 from the equalization chamber, effectively reducing flow resistance. Lower flow resistance means that, under the same fan power or natural wind pressure, a larger volume of cold air can be delivered, improving heat dissipation capacity.

[0038] In some embodiments, the first ventilation structure described above may also employ, for example... Figure 3 The structure shown is described in the following document. Figure 3 The first ventilation structure also includes a second air inlet 43, a second ventilation opening 44, and an air guide shroud 45. The second air inlet 43 is located on the lower part of at least one side plate of the energy storage inverter unit 2 and above the first air inlet 41; the second ventilation opening 44 is located on the top surface of the base 1 and around the periphery of the energy storage inverter unit 2; the air guide shroud 45 covers the second air inlet 43 and the second ventilation opening 44.

[0039] The heat source distribution inside the energy storage inverter unit 2 may be uneven, with some high-heat-generating electrical components located near the side panels. If air intake is only from the bottom, the upward airflow may not effectively cool these hot spots in the lower middle section. The second air vent 43, however, enables precise lateral airflow, directly cooling these critical heat sources and effectively preventing localized overheating.

[0040] The second vent 44, the air guide shroud 45, and the second air outlet 43 form another cooling airflow path. If the first vent 42 and the first air outlet 41 are obstructed due to foreign objects entering or internal blockages, this lateral air duct can continue to provide cooling capacity, preventing the equipment from shutting down immediately due to overheating and enhancing the system's fault tolerance.

[0041] Furthermore, the cold air entering from the lower side can create beneficial disturbances with the rising airflow from the bottom, breaking the dead zones or vortices that may be formed by airflow in a single direction, making the internal heat exchange more complete and efficient.

[0042] The first vent 42 and the first air vent 41 serve as vertical ventilation ducts, responsible for basic cooling of the unit, while the lateral air duct formed by the second vent 44, the air guide shroud 45, and the second air vent 43 is responsible for enhanced and localized cooling. Working together, they form a three-dimensional, multi-inlet heat dissipation network, capable of addressing the heat dissipation challenges brought about by higher power density.

[0043] In some embodiments, the aforementioned step-up transformer unit 3 and the base 1 can be connected by... Figure 2 and Figure 3 The structure shown is described in the following document. Figure 2 and Figure 3The first air inlet 11 is arranged around the four sides of the base 1; a second ventilation structure is provided between the inner cavity of the booster transformer 3 and the inner cavity of the base 1.

[0044] The first air inlet 11 is arranged around the four sides of the base 1, which is equivalent to turning the entire side of the base 1 into a potential air inlet, providing a large effective air intake area and reducing the resistance to air flowing into the inner cavity of the base 1. Under the same environmental conditions, a larger natural air intake volume can be obtained.

[0045] Cold air enters the inner cavity of the base 1 evenly from all sides, which helps to form a static pressure box with stable air pressure and uniform airflow in the sealed space of the base 1. This provides a stable and balanced air source pressure for the subsequent first ventilation structure and second ventilation structure, ensuring that the airflow allocated to the two cooling paths is stable and avoiding the problem of competing for air volume.

[0046] Moreover, the equipment layout of energy storage power stations is complex, and one or more sides of the base 1 may experience poor airflow due to proximity to walls, other equipment, or obstacles. The surround design provides extremely high redundancy. Even if one or two sides are partially blocked, the air inlets on the other sides can still ensure a continuous supply of cool air, enhancing the equipment's adaptability to different installation environments and avoiding overall heat dissipation failure due to partial obstruction.

[0047] A second ventilation structure is provided between the inner cavity of the step-up transformer unit 3 and the inner cavity of the base 1. The cold air in the inner cavity of the base 1 can be introduced into the inner cavity of the step-up transformer unit 3 through the second ventilation structure. In conjunction with the first air inlet 11, the air intake of the step-up transformer unit 3 can be increased, thereby improving the heat dissipation efficiency.

[0048] Preferably, please refer to Figure 3 Based on the above implementation method, the bottom surface of the step-up transformer unit 3 is open; the second ventilation structure includes a third ventilation opening 51 opened on the top surface of the base 1, and the opening area of ​​the third ventilation opening 51 is smaller than the open area of ​​the bottom surface of the step-up transformer unit 3.

[0049] The bottom surface of the step-up transformer unit 3 is completely open, with only a small third vent 51 on the top surface of the base 1 directly below it. This effectively creates a closed, low-height plenum between the bottom of the step-up transformer unit 3 and the top surface of the base 1. Cold air from the interior of the base 1, after passing through the third vent 51, first enters this plenum for buffering and pressure equalization, and then is evenly distributed throughout the entire open bottom area of ​​the step-up transformer unit 3.

[0050] The bottom of the step-up transformer unit 3 is completely open, eliminating the need for a complex structure with a separate air inlet at the bottom, thus simplifying the manufacturing of the unit's enclosure. During installation, the step-up transformer unit 3 can be directly placed on the base 1 without precisely aligning with any air inlet. For maintenance requiring hoisting, it can be lifted directly without the need for disassembly of complex duct connections.

[0051] In some embodiments, the base 1 described above may adopt the following... Figure 1 and Figure 2 The structure shown is described in the following document. Figure 1 and Figure 2 The inner cavity of the base 1 is used for laying cables; part of the base 1 is embedded below the ground 100 and part is located above the ground 100, and the side of the part above the ground 100 is provided with a first air inlet 11.

[0052] Due to the thermal inertia of soil, underground temperatures are typically 100°C lower than the ambient surface temperature, and the diurnal temperature fluctuations are much smaller than those of the air at 100°C. When the base 1 is partially embedded underground, its inner cavity walls (especially the underground portion) come into contact with the cooler soil. The air inside the base 1's cavity exchanges heat with the soil through the inner walls, thus being cooled.

[0053] Therefore, the air drawn in through the surrounding first air inlet 11, upon entering the inner cavity of the base 1, is not still ambient temperature air, but rather low-temperature air naturally cooled by the soil. This pre-cooled air is then sent to the energy storage inverter unit 2 and the step-up transformer unit 3 through the first and second ventilation structures, respectively. Because the inlet air temperature is lower, more heat can be carried away with the same airflow, significantly improving heat dissipation efficiency. This directly results in a slower temperature rise inside the equipment and a lower peak operating temperature.

[0054] Lower operating temperatures mean that the possibility of equipment triggering power derating due to overheating is greatly reduced, ensuring the continuous high power output capability of the energy storage power station in hot weather and improving the economic benefits of the power station.

[0055] In addition, base 1 also serves as an integrated cable management system, laying high-voltage, low-voltage power cables and control cables within its internal cavity, thus achieving integrated cable corridor functionality. This eliminates the need to excavate cable trenches or erect cable trays outside the equipment, resulting in a very clean and tidy surrounding environment. Furthermore, the cables are protected within the robust internal cavity of base 1, avoiding the risks of mechanical damage, trampling, and animal bites that can result from exposure, and also improving resistance to electromagnetic interference. All cables are centralized in a pre-designed channel, facilitating unified inspection, maintenance, and replacement.

[0056] In some embodiments, the design position of the first air outlet 21 can be as follows: Figure 1 and Figure 2The structure shown is described in the following document. Figure 1 and Figure 2 The side plate of the energy storage inverter unit 2 that is perpendicular to the first direction and adjacent to the step-up transformer unit 3 is defined as the first side plate; the first air outlet 21 is provided on at least one other side plate other than the first side plate.

[0057] If the energy storage inverter unit 2 discharges hot air towards the first side panel, the hot air will directly hit the step-up transformer unit 3, causing hot air backflow. By forcibly designating the first air outlet 21 to be located on another side panel, it is ensured that the high-temperature airflow discharged by the energy storage inverter unit 2 is directed towards uninhabited areas or open spaces, physically avoiding direct impact on the step-up transformer unit 3.

[0058] When multiple such converter and booster devices are arranged in a row in an energy storage power station, by planning the air outlet direction of the first air outlet 21, it is possible to prevent the hot air discharged by one set of devices from being sucked in by another set of devices. The orderly airflow organization ensures that all devices can operate in the optimal temperature environment, thereby improving the power generation efficiency and equipment reliability of the entire power station.

[0059] Preferably, the first air outlet 21 is disposed on two side plates perpendicular to the first direction, that is, the air outlet direction of the first air outlet 21 does not face the booster transformer unit 3.

[0060] In some embodiments, the second air inlet 31 and the second air outlet 32 ​​may be adopted as follows: Figure 1 and Figure 2 The structure shown is described in the following document. Figure 1 and Figure 2 The side plate of the step-up transformer unit 3 that is perpendicular to the first direction and adjacent to the energy storage inverter unit 2 is defined as the second side plate; the second air inlet 31 and the second air outlet 32 ​​are respectively provided on at least one other side plate other than the second side plate.

[0061] The second air inlet 31 is located on a side panel other than the second side panel, ensuring that the air drawn into the step-up transformer unit 3 is cool, uncontaminated ambient air from the outside of the equipment. This establishes an independent source of cool air for the step-up transformer unit 3, unaffected by the operating status of other equipment. It also avoids temperature fluctuations at the inlet of the step-up transformer unit 3 caused by the operation of the energy storage inverter unit 2, thus maintaining a stable temperature rise and improving the reliability and lifespan of the equipment.

[0062] The step-up transformer unit 3 also discharges hot air. If the second air outlet 32 ​​is located on the second side panel, the high-temperature exhaust gas will be directly discharged into the narrow space between the two units. After the hot air rises, it may be sucked into the air inlets located on other sides of the lower part of the equipment, forming an internal airflow short circuit and reducing its own heat dissipation efficiency. By forcibly designating the second air outlet 32 ​​to be located on other side panels, the hot air outlet is oriented towards an open area, which is conducive to the rapid diffusion and dilution of hot air, so as not to interfere with itself or worsen the ambient temperature of the adjacent energy storage inverter unit 2.

[0063] Hot air from energy storage inverter unit 2 is discharged from a non-adjacent side, while cold air from step-up transformer unit 3 is drawn in from a non-adjacent side, and hot air is also discharged from a non-adjacent side. The narrow gap formed by the adjacent first and second side plates of the two units creates a relatively static isolation zone without strong airflow. This zone only serves as a structural partition and does not participate in heat exchange, fundamentally eliminating airflow interference. Therefore, the minimum distance between the two units is determined solely by structural, maintenance, and safety distance requirements, without needing to reserve excessive space for complex heat dissipation airflow.

[0064] Specifically, the second air inlet 31 and the second air outlet 32 ​​are provided on two side plates perpendicular to the first direction, and both side plates are provided with the second air inlet 31 and the second air outlet 32.

[0065] Based on the same inventive concept, embodiments of this application also provide an energy storage power station, including multiple of the above-mentioned converter-boost devices; the multiple converter-boost devices are distributed in a rectangular array. In addition, the energy storage power station also includes multiple energy storage battery devices, with each energy storage battery device corresponding one-to-one with the multiple converter-boost devices; or, one converter-boost device corresponds to two or four energy storage battery devices.

[0066] The energy storage power station provided by this utility model, by adopting the above-mentioned converter and booster equipment, effectively avoids mutual interference of airflow between equipment and prevents equipment from operating under temperature rise and fall.

[0067] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A converter-boosting device, characterized in that, include: A base (1) is used to fix it on the ground (100); the base (1) is provided with a first air inlet (11); An energy storage inverter unit (2) is fixed on the base (1); at least one side plate of the energy storage inverter unit (2) has a first air outlet (21) on its upper part; and A step-up transformer unit (3) is fixed on the base (1) and is spaced apart from the energy storage inverter unit (2) along the first direction; the step-up transformer unit (3) has a second air inlet (31) at the bottom of at least one side plate and a second air outlet (32) at the top of at least one side plate. A first ventilation structure is provided between the inner cavity of the energy storage inverter unit (2) and the inner cavity of the base (1).

2. The converter-boost device as described in claim 1, characterized in that, The first ventilation structure includes: The first air inlet (41) is located on the base plate of the energy storage inverter unit (2); The first ventilation opening (42) is opened on the top surface of the base (1) and corresponds vertically to the first air vent (41).

3. The converter and boost converter as described in claim 2, characterized in that, There is a gap between the base plate of the energy storage inverter unit (2) and the top surface of the base (1); the opening area of ​​the first ventilation port (42) is greater than or equal to the opening area of ​​the first air vent (41) and less than the top surface area of ​​the base (1).

4. The converter and boost converter as described in claim 2, characterized in that, The first ventilation structure also includes: The second air vent (43) is located at the lower part of at least one side plate of the energy storage inverter unit (2) and above the first air vent (41). A second ventilation opening (44) is provided on the top surface of the base (1) and located around the energy storage inverter unit (2); and An air guide cover (45) is installed over the second air inlet (43) and the second ventilation opening (44).

5. The converter and boost converter as described in claim 1, characterized in that, The first air inlet (11) is arranged around the four sides of the base (1); a second ventilation structure is provided between the inner cavity of the boost transformer unit (3) and the inner cavity of the base (1).

6. The converter and boost converter as described in claim 5, characterized in that, The bottom surface of the step-up transformer unit (3) is open; the second ventilation structure includes a third ventilation opening (51) opened on the top surface of the base (1), and the opening area of ​​the third ventilation opening (51) is smaller than the opening area of ​​the bottom surface of the step-up transformer unit (3).

7. The converter-boost device according to any one of claims 1-6, characterized in that, The inner cavity of the base (1) is used for laying cables; the base (1) is partially embedded below the ground (100) and partially located above the ground (100), and the first air inlet (11) is provided on the side of the part located above the ground (100).

8. The converter and boost converter as described in claim 1, characterized in that, The side plate of the energy storage inverter unit (2) that is perpendicular to the first direction and adjacent to the step-up transformer unit (3) is defined as the first side plate; the first air outlet (21) is provided on at least one other side plate other than the first side plate.

9. The converter and boost converter as described in claim 8, characterized in that, The side plate of the step-up transformer unit (3) that is perpendicular to the first direction and adjacent to the energy storage inverter unit (2) is defined as the second side plate; the second air inlet (31) and the second air outlet (32) are respectively provided on at least one other side plate other than the second side plate.

10. An energy storage power station, characterized in that, It includes multiple converter boost devices as described in any one of claims 1-9; the multiple converter boost devices are distributed in a rectangular array.

Images