High-power-density energy storage inverter outdoor cabinet

Abstract

The utility model discloses a high power density energy storage inverter outdoor cabinet comprising a cabinet body, and the lower part and the upper part of the two side walls of the cabinet body are respectively provided with an air inlet shutter and an air outlet shutter; the lower part of the cabinet body is provided with an isolating switch, a circuit breaker and an electric reactor, and the middle part of the cabinet body is provided with a power module and a capacitor pool; a reactor wind scooper is connected above the reactor, and the reactor wind scooper is arranged on one side, far away from the power module, of the capacitor pool; a plurality of centrifugal fans are arranged above the power module, the capacitor pool and the electric reactor wind scooper at certain intervals; an axial flow fan is installed on the inner wall of the lower portion of the cabinet body, and the axial flow fan blows air upwards in an inclined mode. According to the utility model, forced air cooling is used to dissipate heat of the cabinet body, the cabinet body is provided with three air channels, the cabinet body adopts a lower air inlet and upper air outlet mode, and the axial flow fan is arranged in the cabinet to assist in heat dissipation in the cabinet, so that the heat dissipation effect is good.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic inverters, and in particular to an outdoor cabinet for a high power density energy storage inverter. Background Technology

[0002] The energy storage market is becoming increasingly competitive, leading to higher demands on energy storage inverters. For power plant owners, construction requires land, so a smaller footprint for the energy storage system translates to lower land costs. Therefore, high-power-density energy storage inverters are crucial. For energy storage manufacturers, high power density allows for smaller equipment, saving materials and reducing transportation costs. This makes high-power-density outdoor inverter cabinets highly competitive. However, the small size of high-power-density energy storage inverters presents greater challenges for internal heat dissipation. Utility Model Content

[0003] To solve the above technical problems, this utility model provides an outdoor cabinet for a high power density energy storage inverter.

[0004] This utility model is achieved by adopting the following technical solution.

[0005] An outdoor cabinet for a high power density energy storage inverter includes a cabinet body. Air inlet louvers and air outlet louvers are respectively provided on the lower and upper parts of the side walls of the cabinet body. A disconnecting switch, circuit breaker, and reactor are provided in the lower part of the cabinet body. A power module and capacitor bank are provided in the middle of the cabinet body. A reactor air guide shroud is connected above the reactor, and the reactor air guide shroud is located on the side of the capacitor bank away from the power module. Several centrifugal fans are also provided at certain intervals above the power module, capacitor bank, and reactor air guide shroud. An axial flow fan is installed on the lower inner wall of the cabinet body, and the axial flow fan blows air upwards at an angle.

[0006] Furthermore, the disconnecting switch and circuit breaker are installed on the electric grid.

[0007] Furthermore, a mounting plate is provided in the middle of the cabinet, and the power module and capacitor pool are mounted on the mounting plate.

[0008] Furthermore, the power module is equipped with several power module heat sinks.

[0009] Furthermore, a centrifugal fan mounting bracket is provided above the cabinet, and three centrifugal fans are installed on the centrifugal fan mounting bracket.

[0010] Furthermore, the reactor air guide cover includes an outer shell, an air supply duct is formed inside the outer shell, a mounting part is formed at the lower end of the outer shell, an inclined clearance part is formed at the upper part of the mounting part away from the capacitor cell, a vertically arranged extension part is formed above the inclined clearance part, and a window is formed at the upper part of the extension part.

[0011] This application has the following beneficial effects.

[0012] This invention utilizes forced air cooling to dissipate heat from the cabinet. The cabinet has three air ducts and adopts a bottom-in, top-out airflow design. An axial fan is installed inside the cabinet to assist in heat dissipation. This high-power-density energy storage inverter outdoor cabinet exhibits excellent heat dissipation and can withstand harsh environments. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of the cabinet body of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the cabinet of this utility model;

[0015] Figure 3 This is a side view of the interior of the cabinet of this utility model (the "↑" in the figure indicates the direction of airflow);

[0016] Figure 4 This is a top view of the interior of the cabinet of this utility model (the "↑" in the figure indicates the direction of airflow);

[0017] Figure 5 This is a schematic diagram of the structure of the reactor and reactor air guide cover of this utility model;

[0018] Figure 6 This is a schematic diagram of the structure of the reactor air guide cover of this utility model;

[0019] Figure 7 This is a schematic diagram of the power module of this utility model;

[0020] Figure 8 This is a schematic diagram of the power module heat sink of this utility model;

[0021] Figure 9 This is a schematic diagram of the airflow direction inside the cabinet of this utility model (the "↑" in the diagram indicates the airflow direction).

[0022] The components include: 1. Disconnecting switch; 2. Power module; 3. Air cavity; 4. Centrifugal fan; 5. Capacitor cell; 6. Power module heat sink; 7. Circuit breaker; 8. Reactor; 9. Axial flow fan; 10. Reactor air guide cover; 10-1. Mounting part; 10-2. Inclined clearance part; 10-3. Extension part; 10-4. Window; 10-5. Air supply duct; 10-6. Housing; 11. Anti-electric shock grid; 12. Cabinet; 13. Air inlet louver; 14. Air outlet louver. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] like Figure 1-9 As shown, an outdoor cabinet for a high power density energy storage inverter includes a cabinet body 12. Cabinet doors are formed on the lower middle parts of both sides of the cabinet body 12, with air inlet louvers 13 formed at the bottom of the doors; and air outlet louvers 14 are formed on the cabinet body 12 above the doors. In this application, the air inlets are located at the lower end of the cabinet body 12, and the air outlets are located at the upper end of the cabinet body 12. Air enters from the lower front and rear sides and exits from the upper front and rear sides, carrying away heat from inside the cabinet.

[0025] The cabinet 12 contains an isolating switch 1, a power module 2, a centrifugal fan 4, a capacitor bank 5, a circuit breaker 7, a reactor 8, an axial flow fan 9, a reactor air guide cover 10, and an electric shock protection grid 11.

[0026] Specifically, a shockproof grid 11 and a reactor 8 are provided at the lower part of the cabinet 12. A disconnecting switch 1 and a circuit breaker 7 are installed on the shockproof grid 11. A mounting plate is provided in the middle of the cabinet 12, on which a power module 2 and a capacitor bank 5 are mounted. The power module 2 and the capacitor bank 5 are located above the disconnecting switch 1, the circuit breaker 7, and part of the reactor 8. The power module 2 is provided with several power module heat sinks 6 for heat dissipation.

[0027] The reactor 8 is connected to a reactor air guide shroud 10 above it. The reactor air guide shroud 10 includes a housing 10-6, and an air supply duct 10-5 is formed inside the housing 10-6. A mounting part 10-1 is formed at the lower end of the housing 10-6. The mounting part 10-1 is used to connect to the upper end of the reactor 8. The upper part of the mounting part 10-1 is inclined away from the capacitor cell 5 to form an inclined clearance part 10-2. The inclined clearance part 10-2 is located below the capacitor cell 5. A vertically arranged extension part 10-3 is formed above the inclined clearance part 10-2. The extension part 10-3 is located on the side of the capacitor cell 5 away from the power module 2. A window 10-4 is formed in the upper part of the extension part 10-3.

[0028] A centrifugal fan mounting frame is provided at a certain distance above the power module 2, capacitor bank 5, and reactor air guide shroud 10, forming an air cavity 3 between the power module 2, capacitor bank 5, reactor air guide shroud 10, and the centrifugal fan mounting frame. Several centrifugal fans 4 are installed on the centrifugal fan mounting frame; preferably, three centrifugal fans 4 are provided.

[0029] To accelerate the airflow within the cabinet 12, this application installs an axial flow fan 9 on the lower inner wall of the cabinet 12. The axial flow fan 9 blows air upwards at an angle, and together with three centrifugal fans 4, draws air upwards, causing the air inside the cabinet to flow rapidly.

[0030] External air enters the cabinet 12 through the louvered air inlets 13 on both sides. The air outlet on one side receives air sequentially from the circuit breaker 7, disconnector 1, power module 2, air chamber 3, and centrifugal fan 4. The air outlet on the other side has two air ducts: the first duct receives air sequentially from the capacitor bank 5, air chamber 3, and centrifugal fan 4; the second duct receives air from the reactor 8, reactor air guide shroud 10, air chamber 3, and centrifugal fan 4. This application includes an axial flow fan 9 and a reactor air guide shroud 10 inside, ensuring airflow through all components below the cabinet for cooling purposes.

[0031] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A high power density energy storage inverter outdoor cabinet comprising a cabinet body (12), characterized in that: Intake air shutter (13) and outlet air shutter (14) are arranged at lower part and upper part of both sides of the cabinet (12) respectively; isolating switch (1), circuit breaker (7) and electric reactor (8) are arranged at lower part of the cabinet (12), power module (2) and capacitor cell (5) are arranged at middle part of the cabinet (12); electric reactor wind guide cover (10) is connected above the electric reactor (8), and the electric reactor wind guide cover (10) is arranged at the side of the capacitor cell (5) away from the power module (2); a plurality of centrifugal fans (4) are further arranged at a certain distance above the power module (2), capacitor cell (5) and electric reactor wind guide cover (10); axial flow fan (9) is installed on the inner wall of the lower part of the cabinet (12), and the axial flow fan (9) blows air upwardly.

2. The high power density energy storage inverter outdoor cabinet according to claim 1, characterized in that: The isolating switch (1) and the circuit breaker (7) are arranged on the electric shock prevention net (11).

3. The high power density energy storage inverter outdoor cabinet according to claim 1, characterized in that: The middle part of the cabinet (12) is provided with a mounting plate, and the power module (2) and the capacitor cell (5) are arranged on the mounting plate.

4. The high power density energy storage inverter outdoor cabinet according to claim 1, characterized in that: The power module (2) is provided with a plurality of power module radiators (6).

5. The high power density energy storage inverter outdoor cabinet according to claim 1, characterized in that: The upper part of the cabinet (12) is provided with a centrifugal fan mounting rack, and three centrifugal fans (4) are mounted on the centrifugal fan mounting rack.

6. The high power density energy storage inverter outdoor cabinet of claim 1, wherein: The electric reactor wind guide cover (10) comprises a shell (10-6), an air supply channel (10-5) is formed in the shell (10-6), a mounting portion (10-1) is formed at the lower end of the shell (10-6), an inclined accommodation portion (10-2) is formed by inclining the upper part of the mounting portion (10-1) away from the capacitor cell (5), an extension portion (10-3) is formed above the inclined accommodation portion (10-2) and arranged vertically, and a window (10-4) is formed at the upper part of the extension portion (10-3).

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