Energy storage inverter cabinet

Abstract

The utility model provides an energy storage inverter cabinet, which belongs to the technical field of electrical equipment and comprises a cabinet body, a plurality of groups of inversion modules, a heat exchanger and an air guide assembly. The cabinet body is provided with a closed cavity; the length direction of the cabinet body is defined as a first direction, and the width direction is defined as a second direction; the multi-phase inversion modules are arranged in the closed cavity at intervals along a second direction; a flow passage is formed between every two adjacent groups of inversion modules, and the flow passage extends along a first direction; the heat exchanger is arranged on a side plate, perpendicular to the first direction, of the cabinet body; the heat exchanger is provided with an inner circulation air outlet and an inner circulation air return opening, and the inner circulation air outlet and the inner circulation air return opening face all the overflowing channels. The air guide assembly is arranged in the closed cavity. According to the utility model, the air guide assembly is used for guiding the air flow to circularly flow in each flow passage, so that the flow path of the air flow is increased, the air flow can completely flow through the surface of each inversion module, the heat dissipation efficiency of the inversion module is improved, and uniform heat dissipation of each phase of inversion module is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to electrical equipment technical field, more specifically, relate to a kind of energy storage inverter cabinet. BACKGROUND

[0002] Energy storage inverter is the equipment that direct current power supply is converted into alternating current power supply, mainly applied in photovoltaic, wind energy and nuclear power generation system energy storage equipment. Since certain energy storage inverter is usually applied in high temperature, high humidity, high dust and other harsh environment, in order to protect the power device inside it, energy storage inverter is required to have high sealing performance and high protection level, so closed heat dissipation can only be used inside it.

[0003] For the energy storage inverter cabinet of large power, usually including multi-phase inverter module, reactance module and capacitor busbar module and other power devices. Air circulation flow can be formed in the closed cavity of the cabinet to take away the heat of power devices, and the power devices are cooled. Since multi-phase inverter module occupies part of the inner cavity of the cabinet, it cannot be guaranteed that all electrical components are in the path of air circulation flow, resulting in poor heat dissipation and uneven heat dissipation. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of energy storage inverter cabinet, to solve the technical problems of poor heat dissipation and uneven heat dissipation of inverter module of the energy storage inverter cabinet of large power in prior art.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the utility model is: providing a kind of energy storage inverter cabinet, comprising:

[0006] Cabinet body, with closed cavity;The length direction of the cabinet body is defined as the first direction, and the width direction is the second direction;

[0007] Multi-phase inverter module, is arranged in the closed cavity along the second direction;Each adjacent two groups of inverter module form flow channel, and the flow channel extends along the first direction;

[0008] Heat exchanger, is arranged on the side plate of the cabinet body perpendicular to the first direction;The heat exchanger has internal circulation air outlet and internal circulation air return, and the internal circulation air outlet and the internal circulation air return are both directed to each flow channel;And

[0009] Air guide assembly, is arranged in the closed cavity, for guiding air circulation flow in each flow channel.

[0010] In a possible implementation, the heat exchanger and the plurality of inverter modules are separated by a heat dissipation space; the air guide assembly is arranged in each of the flow channels and extends into the heat dissipation space and is arranged between the inner circulation air outlet and the inner circulation air return.

[0011] In some embodiments, the air guide assembly comprises:

[0012] a partition plate arranged in the heat dissipation space and separating the inner circulation air outlet and the inner circulation air return; and

[0013] a plurality of air guide plates connected to the partition plate, and each of the plurality of air guide plates is arranged in one of the flow channels.

[0014] In a possible implementation, the energy storage inverter cabinet further comprises:

[0015] a wind blocking assembly arranged on a side of the plurality of inverter modules away from the heat exchanger and extending to the periphery of the plurality of inverter modules in the second direction; the wind blocking assembly is configured to redirect the air flow output from the inner circulation air outlet and return the air flow to the inner circulation air return.

[0016] In some embodiments, the inverter module, the heat exchanger and the wind blocking assembly are arranged along the height direction of the cabinet, and the inner circulation air outlet is arranged below the inner circulation air return.

[0017] In some embodiments, the heat exchanger further comprises an outer circulation air inlet and an outer circulation air outlet arranged to face the outside environment, and the outer circulation air inlet is arranged below the outer circulation air outlet.

[0018] The first fan is arranged at the inner circulation air outlet, and the second fan is arranged at the outer circulation air outlet.

[0019] In some embodiments, the inverter module comprises:

[0020] a plurality of component groups; and

[0021] a heat sink arranged to be attached to the plurality of component groups.

[0022] The closed cavity further comprises a plurality of groups of heat dissipation air ducts corresponding to the heat sink, and the heat sink is arranged in the corresponding heat dissipation air duct; each of the adjacent two groups of heat dissipation air ducts forms the flow channel.

[0023] In some embodiments, the upper end of the wind blocking assembly protrudes upwardly from the plurality of component groups, and the protruding part of the wind blocking assembly is provided with a wind passing hole, and the wind passing hole is in communication with each of the flow channels.

[0024] In some embodiments, the group of components includes an upper component and a lower component, the upper component is located above the air guide assembly and directly opposite the air passage along the first direction, and the upper component has a greater heat generation than the lower component.

[0025] In some embodiments, the air inlet end of the heat dissipation air duct extends downward to below the group of components, and the closed cavity further comprises a total air inlet duct connected to the air inlet ends of the heat dissipation air ducts and located directly below the heat sink.

[0026] The energy storage inverter cabinet has the advantages that: compared with the prior art, the energy storage inverter cabinet is provided with multi-phase inversion modules in the closed cavity, and can meet the use requirements of high sealing performance and high protection level of the cabinet; the multi-phase inversion modules are spaced apart and form a plurality of flow channels, the inner circulation air outlet and the inner circulation air return of the heat exchanger are both directed to each flow channel, and the air guide assembly is arranged to guide the air flow to form a circulating flow in each flow channel, increase the air flow path, and completely flow through the surface of each inversion module, improve the heat dissipation efficiency of the inversion module, and ensure uniform heat dissipation of each phase inversion module. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0028] Figure 1 Structure diagram of the energy storage inverter cabinet provided by the embodiments of the present application Figure 1 (the left side plate of the cabinet body is not shown in the figure);

[0029] Figure 2 Structure diagram of the energy storage inverter cabinet provided by the embodiments of the present application Figure 2 (the left side plate of the cabinet body is not shown in the figure);

[0030] Figure 3 Structure diagram of the multi-phase inversion module of the energy storage inverter cabinet provided by the embodiments of the present application Figure 1 Structure diagram of the multi-phase inversion module of the energy storage inverter cabinet provided by the embodiments of the present application

[0031] Figure 4 Structure diagram of the multi-phase inversion module of the energy storage inverter cabinet provided by the embodiments of the present application

[0032] Figure 5 Structure diagram of the air guide assembly of the energy storage inverter cabinet provided by the embodiments of the present application.

[0033] Fig.:

[0034] 1, cabinet; 11, closed cavity; 12, flow passage; 13, heat dissipation space; 14, heat dissipation air duct; 15, total air inlet duct; 16, total air outlet duct;

[0035] 2, inverter module; 21, component group; 211, upper component; 212, lower component;

[0036] 3, heat exchanger; 31, internal circulation air outlet; 32, internal circulation air return; 33, external circulation air inlet; 34, external circulation air outlet; 35, first fan;

[0037] 4, air guide assembly; 41, partition plate; 42, air guide plate;

[0038] 5, wind blocking assembly; 51, air hole. DETAILED DESCRIPTION

[0039] In order to make the technical problems, technical schemes and beneficial effects to be solved by the utility model more clear and obvious, the utility model will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.

[0040] Please refer to Figures 1 to 4 , now the energy storage inverter cabinet provided by the utility model will be described. The energy storage inverter cabinet comprises a cabinet 1, a plurality of inverter modules 2, a heat exchanger 3 and an air guide assembly 4. The cabinet 1 has a closed cavity 11; the length direction of the cabinet 1 is defined as the first direction, and the width direction is the second direction; the multi-phase inverter module 2 is arranged in the closed cavity 11 along the second direction; the flow passage 12 is formed between each adjacent two inverter modules 2, and the flow passage 12 extends along the first direction; the heat exchanger 3 is arranged on the side plate of the cabinet 1 perpendicular to the first direction; the heat exchanger 3 has an internal circulation air outlet 31 and an internal circulation air return 32, and the internal circulation air outlet 31 and the internal circulation air return 32 are both directed to each flow passage 12; the air guide assembly 4 is arranged in the closed cavity 11, and is used for guiding the airflow to form a circulating flow in each flow passage 12.

[0041] The cabinet body 1 is a cuboid structure, which is composed of a front side plate, a rear side plate, a left side plate, a rear side plate, a top plate, a bottom plate, and a support frame connecting and supporting the above-mentioned plates. The cabinet body 1 has a closed cavity 11, which can be understood as the above-mentioned six plates of the cabinet body 1 can enclose the closed cavity 11, or the above-mentioned six plates of the cabinet body 1 cooperate with other plates in the cabinet body 1 to enclose the closed cavity 11. The closed cavity 11 is not in communication with the outside, so that the closed cavity 11 has high sealing performance and high protection level, which can make the electrical cabinet be applied in harsh environments such as high temperature, high humidity and high dust, and meet the use requirements of the electrical element group.

[0042] The heat exchanger 3 is preferably an air-to-air heat exchanger 3, which has a heat exchange core. The heat exchanger 3 can introduce external cold air and also can recover hot air in the closed cavity 11. After the external cold air passes through the heat exchange core, the heat of the hot air in the closed cavity 11 passing through the heat exchange core is taken away, so as to reduce the temperature of the hot air. It should be noted that the external cold air and the hot air circulating in the closed cavity 11 are separated and will not collide.

[0043] The heat exchanger 3 has only one internal circulation air outlet 31 and one internal circulation air return port 32. The airflow in the closed cavity 11 enters the heat exchanger 3 through the internal circulation air return port 32, is cooled by the heat exchange core, and then enters the closed cavity 11 from the internal circulation air outlet 31.

[0044] Since the airflow needs to form a circulating flow in the closed cavity 11, and the airflow needs to pass through the heat exchanger 3 for heat exchange, in order to increase the path of the circulating flow of the airflow, the circulating flow is generally in the length direction and the up-down direction of the closed cavity 11. Then, in order to adapt to the structure of the closed cavity 11 and the path of the circulating flow of the airflow, each phase inverter module 2 is arranged along the length direction of the cabinet body 1 (which can be regarded as that the main heat generating outer surface of each phase inverter module 2 is parallel to the front-rear direction of the cabinet body 1), and is spaced along the width direction.

[0045] Since the multi-phase inverter modules 2 are spaced, a flow passage 12 can be formed between each adjacent two heat dissipation air ducts 14. In addition, there is a ventilation space between the leftmost inverter module 2 and the left side plate of the cabinet body 1. Each flow passage 12 is in communication with the internal circulation air outlet 31 and the internal circulation air return port 32. Part of the cold air output by the internal circulation air outlet 31 passes through each flow passage 12 and the ventilation space to blow against the heat generating outer surface of each phase inverter module 2, so as to take away heat and ensure uniform heat dissipation of each phase inverter module 2.

[0046] The air guide assembly 4 is used for guiding the air flow to form a circulating flow around the surface of each phase inverter module 2. The air guide assembly 4 can adopt a fan combination, can adopt a baffle combination to isolate an air guide channel, or can adopt a fan combination plus a baffle combination. The specific form of the air guide assembly 4 is not limited in the embodiment, as long as the air flow can pass through each flow channel 12 and form a circulating flow.

[0047] Compared with the prior art, the energy storage inverter cabinet provided by the utility model, the multi-phase inverter module 2 is arranged in the closed cavity 11, the use requirement of high sealing performance and high protection level of the cabinet can be met, the multi-phase inverter module 2 is spaced and a plurality of flow channels 12 are formed, the inner circulation air outlet 31 and the inner circulation air return 32 of the heat exchanger 3 are all oriented to each flow channel 12, and the air guide assembly 4 is arranged, which is used for guiding the air flow to form a circulating flow in each flow channel 12, increasing the air flow path, so that the surface of each inverter module 2 is completely flowed through, the heat dissipation efficiency of the inverter module 2 is improved, and uniform heat dissipation of each phase inverter module 2 is ensured.

[0048] In some embodiments, the air guide assembly 4 can adopt the structure as shown in Figures 1 to 4 , referring to Figure 1 and Figure 4 , the heat dissipation space 13 exists between the heat exchanger 3 and the multi-phase inverter module 2; the air guide assembly 4 is horizontally arranged in each flow channel 12, and one end extends into the heat dissipation space 13 and is horizontally arranged between the inner circulation air outlet 31 and the inner circulation air return 32.

[0049] The air guide assembly 4 is horizontally arranged between the inner circulation air outlet 31 and the inner circulation air return 32, which is used for blocking the inner circulation air outlet 31 and the inner circulation air return 32, the air flow directly returns to the inner circulation air return 32 and is cut off, and can only flow to the flow channel 12 after flowing out of the inner circulation air outlet 31. The air guide assembly 4 is also horizontally arranged in each flow channel 12, which is used for guiding the air flow to form a circulation.

[0050] Compared with the air flow guiding mode using the fan, the air guide assembly 4 is horizontally arranged in each flow channel 12, which is convenient for assembly and does not additionally occupy the space of the closed cavity 11; in addition, the air guide path of the air guide assembly 4 is clear, which can ensure that the air flow forms a circulating flow in each flow channel 12 and completely passes through the heating surface of each phase inverter module 2.

[0051] In some embodiments, the air guide assembly 4 can adopt the structure as shown in Figure 4 and Figure 5 , referring to Figure 4 and Figure 5The air guide assembly 4 comprises a partition plate 41 and a plurality of air guide plates 42. The partition plate 41 is horizontally arranged in the heat dissipation space 13 and is used to partition the inner circulation air outlet 31 and the inner circulation air return port 32. The plurality of air guide plates 42 are respectively connected with the partition plate 41. The plurality of air guide plates 42 are horizontally arranged in the plurality of flow channels 12 one by one.

[0052] The partition plate 41 and the plurality of air guide plates 42 are integrally formed. The plate surfaces of the partition plate 41 and the air guide plates 42 are perpendicular to the flow direction of the air flow output by the inner circulation air outlet 31. The partition plate 41 is horizontally arranged in the heat dissipation space 13 and is used to partition the inner circulation air outlet 31 and the inner circulation air return port 32, so as to ensure that the air flow directly returns to the circuit and can only flow to each inverter module 2 after passing through the inner circulation air outlet 31. The air guide plates 42 are horizontally arranged in the flow channels 12 and are used to partition the flow channels 12, so that the air flow can flow in the air guide plates to form a circulation, increase the air flow path, and improve the heat dissipation efficiency of the inverter module 2.

[0053] Preferably, the air guide plates 42 are arranged at the central parts of the inverter modules 2 in the up-down direction, and the horizontal arrangement directions of the air guide plates 42 and the partition plate 41 are substantially parallel to the air outlet direction of the inner circulation air outlet 31. If the air outlet direction is inclined downward, the air guide plates 42 and the partition plate 41 are arranged from back to front and inclined downward.

[0054] The air guide assembly 4 adopts a plate structure, which is simple in structure, easy to assemble, does not occupy the space of the closed cavity 11, and does not interfere with the inverter module 2. The air guide path is clear, and the air flow can form a circulation in each flow channel 12 and completely pass through the heating surfaces of each phase inverter module 2.

[0055] In some embodiments, the energy storage inverter cabinet can also adopt a structure as shown in Figures 1 to 4 , and as shown in Figures 1 to 4 , the energy storage inverter cabinet further comprises a wind blocking assembly 5. The wind blocking assembly 5 is arranged on the side of the multi-phase inverter module 2 away from the heat exchanger 3, and in the second direction, the two ends of the wind blocking assembly 5 extend to the periphery of the multi-phase inverter module 2. The wind blocking assembly 5 is used to change the direction of the air flow output from the inner circulation air outlet 31 and return the air flow to the inner circulation air return port 32.

[0056] Specifically, in the air outlet direction of the inner circulation air outlet 31, the wind blocking assembly 5 is arranged downstream of the inverter module 2, and the air guide assembly 4 and the wind blocking assembly 5 are arranged vertically or slightly inclined relative to the vertical. There is a gap between one end of the air guide assembly 4 and the plate surface of the wind blocking assembly 5, which is used to pass the air flow.

[0057] Specifically, the cold air output by the inner circulation air outlet 31 first passes through half of each flow passage 12 along the air guide assembly 4, flows through the surface of the inverter module 2, and carries away the heat of the inverter module 2 to dissipate heat. After encountering the air baffle assembly 5, the airflow is redirected and affected by the heat exchanger 3, and then passes through the remaining half of each flow passage 12 along the air guide assembly 4 again, flows through the surface of the inverter module 2 again, carries away the heat of the inverter module 2 to dissipate heat, and finally enters the inner circulation air return port 32 to enter the heat exchange core for heat exchange, completing a cycle.

[0058] The air baffle assembly 5 not only changes the direction of the airflow, but also separates the closed cavity 11, so that the multi-phase inverter module 2 is integrated in the space enclosed by the air baffle assembly 5 and the side panel of the cabinet 1. In addition, other components can be arranged on the leeward side of the air baffle assembly 5 to improve the space utilization of the closed cavity 11, which meets the design requirements of high-power mechanisms.

[0059] Preferably, the heat exchanger 3, the multi-phase inverter module 2, and the air baffle assembly 5 are directly corresponding and sequentially distributed in the first direction, and are arranged in a staggered manner relative to the heat exchanger 3 and the multi-phase inverter module 2. The cold air output by the inner circulation air outlet 31 directly blows to each flow passage 12 along the first direction, which can improve the space utilization of the closed cavity 11 and concentrate the cold air to preferably dissipate heat from the inverter module 2 with a large heat generation.

[0060] In some embodiments, the above-mentioned energy storage inverter cabinet also has a structure as shown in Figures 1 to 3 , referring to Figures 1 to 3 , the inverter module 2, the heat exchanger 3, and the air baffle assembly 5 are placed along the height direction of the cabinet 1, and the inner circulation air outlet 31 is located below the inner circulation air return port 32. Specifically, the inverter module 2 is arranged in the upper half of the closed cavity 11, and the heat exchanger 3 is arranged on the upper half of the side panel of the cabinet 1.

[0061] Placing the heat exchanger 3 and the inverter module 2 along the height direction of the cabinet 1, and locating the inner circulation air return port 32 above the inner circulation air outlet 31, conforms to the flow trend of hot air rising naturally and cold air sinking naturally, and does not need to arrange other fans in the closed cavity 11 corresponding to each phase inverter module 2, further simplifying the structure of the air guide assembly 4 and the air baffle assembly 5 for guiding the circulation of the airflow.

[0062] Please refer to Figure 1 and Figure 2 , on the basis of the above-mentioned embodiments, the heat exchanger 3 further has an outer circulation air inlet 33 and an outer circulation air outlet 34 respectively facing the outside, the outer circulation air inlet 33 is located below the outer circulation air outlet 34, a first fan 35 is arranged at the inner circulation air outlet 31, and a second fan is arranged at the outer circulation air outlet 34.

[0063] Specifically, the heat exchanger 3 is arranged on the upper half of the rear side plate of the cabinet 1, and the inner circulation air outlet 31 and the inner circulation air return 32 are both directed to the front side plate of the cabinet 1.

[0064] It should be noted that the above front-rear and left-right definitions are based on the front door plate of the cabinet 1 as the reference datum. Generally, the cabinet 1 is provided with a front door plate (i.e., a front side plate), which can be opened to facilitate maintenance of the electrical components. An operation panel is also arranged on the front door plate.

[0065] Since the heat exchanger 3 is preferably arranged on the side plate perpendicular to the first direction, it can be understood that the plate surface of the rear side plate is perpendicular to the length direction of the cabinet 1, and the plate surfaces of the left and right side plates are perpendicular to the width direction of the cabinet 1.

[0066] The heat exchanger 3 of the present embodiment is arranged on the rear side plate and can be shielded by the cabinet 1. The outer circulation air inlet 33 and the outer circulation air outlet 34 are both directed to the rear of the cabinet 1 and do not affect the operation of the front control panel.

[0067] Specifically, the airflow in the closed cavity 11 enters the heat exchanger 3 through the inner circulation air return 32, is cooled by the core, and then enters the closed cavity 11 from the inner circulation air outlet 31. The external airflow enters the heat exchanger 3 from the outer circulation air inlet 33, carries away heat after passing through the core to reduce the temperature of the core, and then flows out of the heat exchanger 3 from the outer circulation air outlet 34.

[0068] The inner circulation air return 32 is located above the inner circulation air outlet 31, which conforms to the flow trend of the natural sinking of cold air. The outer circulation air inlet 33 is located below the outer circulation air outlet 34, which conforms to the flow trend of the natural rising of hot air.

[0069] A first fan 35 is arranged at the inner circulation air outlet 31 to increase the air outlet speed to the closed cavity 11. A second fan is arranged at the outer circulation air outlet 34 to increase the flow rate and flow volume of the external airflow passing through the heat exchanger core.

[0070] In some embodiments, the above-mentioned inverter module 2 can adopt a structure as shown in Figures 1 to 4 , which will be described below with reference to Figures 1 to 4 . The inverter module 2 includes an electrical component group 21 and a heat sink. The heat sink is arranged in close contact with the electrical component group 21. In the closed cavity 11, a plurality of sets of heat dissipation air ducts 14 corresponding to the heat sink are arranged, and the heat sink is located in the corresponding heat dissipation air duct 14. Each adjacent two sets of heat dissipation air ducts 14 form a flow passage 12.

[0071] Since the inverter module 2 is the main power device of the energy storage inverter cabinet, it generates a large amount of heat. In order to further improve the heat dissipation efficiency, the inverter module 2 is provided with a separate heat sink. The heat sink is arranged in close contact with the inverter module 2, and the heat sink can carry away the heat generated by the inverter module 2.

[0072] Specifically, the heat sink includes multiple spaced heat dissipation fins. The heat sink is generally a low-protection-level device and does not need to be placed in the closed cavity 11. Moreover, the heat sink needs to be constantly circulated with cold air to absorb heat. Therefore, the heat sink is placed in the heat dissipation duct 14, which is also located in the closed cavity 11, but is connected to the outside (the air inlet and air outlet of the heat dissipation duct 14 are connected to the outside). The outside cold air is introduced into the heat dissipation duct 14 and blows directly onto the heat sink to remove the heat from the inverter module 2.

[0073] It should be noted that the specific structure of the heat sink is not shown in the figure because the heat sink is surrounded by the heat dissipation air duct 14.

[0074] In some embodiments, the windshield assembly 5 and the air element assembly 21 can be connected by, for example, Figure 1 and Figure 2 The structure shown is described in the following document. Figure 1 and Figure 2 The upper end of the wind deflector 5 protrudes upward from the air component assembly 21, and the protruding part of the wind deflector 5 is provided with an air passage hole 51, which is connected to each flow channel 12.

[0075] Preferably, the windbreak assembly 5 is a plate-shaped structure with its plate surface perpendicular to the first direction to reduce the space it occupies.

[0076] Since other air components can be installed on the leeward side of the windbreak assembly 5, the windbreak assembly 5 can also serve as a mounting base for other air components. In order to ensure the heat dissipation of other air components, these other air components also need to have airflow passing through them, and a second circulation flow is formed with the heat exchanger 3 as the reference.

[0077] By making the upper end of the wind deflector 5 protrude and providing the air vent 51, another circulating airflow will concentrate and enter the upper part of each flow channel 12 (i.e. the part located above the wind deflector 5), blow over the inverter module 2, and further dissipate heat from the inverter module 2.

[0078] In some embodiments, the above-mentioned component assembly 21 may adopt the following... Figure 3 and Figure 4 The structure shown is described in the following document. Figure 3 and Figure 4 The air supply component group 21 includes an upper air supply component 211 and a lower air supply component 212. The upper air supply component 211 is located above the air guide assembly 4 and is directly opposite to the air passage 51 along the first direction. The heat generation of the upper air supply component 211 is greater than that of the lower air supply component 212.

[0079] For the inverter module 2, the air flow circulating through the flow channel 12 blows against the entire heat generating outer surface, and another circulating air flow blows against the upper surface through the air hole 51, so that the upper half of the inverter module 2 receives more air than the lower half. In order to reasonably utilize the air flow in different spaces, the inverter module 2 is divided into the upper element 211 and the lower element 212 in the embodiment, and the upper element 211 with large heat generation is arranged corresponding to the front and back of the air hole 51, so that the upper element 211 can receive the air flow of the two circulating air flows. Although the upper element 211 has large heat generation, it receives large air flow, so that the inverter module 2 is uniformly cooled.

[0080] In some embodiments, the heat dissipation air duct 14 can also adopt the structure as shown in Figures 1 to 4 , and the air inlet end of the heat dissipation air duct 14 extends downward to below the element group 21; the closed cavity 11 is also provided with a total air inlet duct 15 connected to the air inlet ends of the heat dissipation air ducts 14 and located directly below the radiator. Figures 1 to 4

[0081] Although the heat dissipation air ducts 14 are independently arranged and distributed in parallel, each heat dissipation air duct 14 is connected to the total air inlet duct 15, and the air inlet of the total air inlet duct 15 is arranged on the side plate of the cabinet 1. In this way, only one total air inlet is arranged on the side plate of the cabinet 1, so as to reduce the number of openings and the interference of other electrical equipment outside on the air inlet of the heat dissipation air duct 14.

[0082] The total air inlet duct 15 is located below the radiator and the heat exchanger 3, so that the heat dissipation air duct 14 adopts the air flow mode of air inlet at the lower end and air outlet at the upper end, and the height difference can prevent impurities such as rain and dust from entering the inside of the heat dissipation air duct 14, so as to avoid the pollution of the teeth of the radiator by external impurities.

[0083] In addition, the closed cavity 11 is also provided with a total air outlet duct 16 connected to the air outlet ends of the heat dissipation air ducts 14. The total air outlet duct 16 extends along the first direction and is arranged on the top of the cabinet 1. The total air outlet duct 16 is provided with an air suction fan, which is aligned with the air outlets of the heat dissipation air ducts 14, for increasing the air speed and air volume, so that the cold air quickly passes through the radiator. The air outlet of the total air outlet duct 16 is arranged on the side plate of the cabinet 1.

[0084] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.​

Claims

1. An energy storage inverter cabinet, characterized by, The application relates to an energy storage inverter cabinet. The cabinet body (1) has a closed cavity (11); the length direction of the cabinet body (1) is defined as a first direction, and the width direction is defined as a second direction; A plurality of multiphase inverter modules (2) are arranged in the closed cavity (11) along the second direction; each two adjacent groups of the inverter modules (2) form a flow channel (12) therebetween, and the flow channel (12) extends along the first direction; A heat exchanger (3) is arranged on a side plate of the cabinet body (1) perpendicular to the first direction; the heat exchanger (3) has an internal circulation air outlet (31) and an internal circulation air return port (32), and the internal circulation air outlet (31) and the internal circulation air return port (32) are both directed towards each flow channel (12); and An air guide assembly (4) is arranged in the closed cavity (11) and is used for guiding air flow to form a circulating flow in each flow channel (12).

2. The energy storage inverter cabinet of claim 1, wherein, The heat exchanger (3) and the plurality of multiphase inverter modules (2) have a heat dissipation space (13) therebetween; the air guide assembly (4) is arranged in each flow channel (12) and extends into the heat dissipation space (13) at one end and is arranged between the internal circulation air outlet (31) and the internal circulation air return port (32).

3. The energy storage inverter cabinet of claim 2, wherein, The air guide assembly (4) comprises: A partition plate (41) is arranged in the heat dissipation space (13) and is used for partitioning the internal circulation air outlet (31) and the internal circulation air return port (32); and A plurality of air guide plates (42) are connected with the partition plate (41) one by one; and the plurality of air guide plates (42) are arranged in the plurality of flow channels (12) one by one.

4. The energy storage inverter cabinet of claim 1, wherein, The energy storage inverter cabinet further comprises: A wind blocking assembly (5) is arranged on a side of the plurality of multiphase inverter modules (2) away from the heat exchanger (3) and extends to the periphery of the plurality of multiphase inverter modules (2) at two ends in the second direction; the wind blocking assembly (5) is used for changing the direction of air flow output from the internal circulation air outlet (31) and making the air flow return to the internal circulation air return port (32).

5. The energy storage inverter cabinet of claim 4, wherein, The inverter module (2), the heat exchanger (3) and the wind blocking assembly (5) are arranged along the height direction of the cabinet body (1), and the internal circulation air outlet (31) is located below the internal circulation air return port (32).

6. The energy storage inverter cabinet of claim 5, wherein, The heat exchanger (3) further has an external circulation air inlet (33) and an external circulation air outlet (34) directed towards the outside, and the external circulation air inlet (33) is located below the external circulation air outlet (34); A first fan (35) is arranged at the internal circulation air outlet (31), and a second fan is arranged at the external circulation air outlet (34).

7. The energy storage inverter cabinet of claim 5, wherein, The inverter module (2) comprises: A component group (21); and A heat sink is arranged in close contact with the component group (21); The closed cavity (11) further comprises a plurality of groups of heat dissipation air ducts (14) corresponding to the heat sink, and the heat sink is arranged in the corresponding heat dissipation air duct (14); each two adjacent groups of the heat dissipation air ducts (14) form the flow channel (12).

8. The energy storage inverter cabinet of claim 7, wherein, The upper end of the wind blocking assembly (5) protrudes upwardly from the element group (21), and the protruding part of the wind blocking assembly (5) is provided with a wind passing hole (51) which communicates with each of the flow passing channels (12).

9. The energy storage inverter cabinet of claim 8, wherein, The element group (21) comprises an upper element (211) and a lower element (212), the upper element (211) is located above the air guiding assembly (4) and directly corresponds to the wind passing hole (51) along the first direction; the heat generation of the upper element (211) is greater than that of the lower element (212).

10. The energy storage inverter cabinet of claim 7, wherein, The air inlet end of the heat dissipation air duct (14) extends downwardly to below the element group (21); the closed cavity (11) is further provided with a total air inlet duct (15) which is connected to the air inlet end of each heat dissipation air duct (14) and is located below the radiator.

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