Air-cooling heat dissipation device for multiple electrical modules

Abstract

The utility model relates to a heat dissipation device for power electronic modules, and in particular to an air-cooled heat dissipation device for multiple electrical modules. An air-cooled heat dissipation device for multiple electrical modules comprises two groups of mounting frames arranged in back-to-back relation, an air duct between the mounting frames, a plurality of centrifugal fans installed at the top of the air duct, a plurality of groups of electrical modules installed on the side walls of the mounting frames, and a fan baffle installed between adjacent centrifugal fans. This air-cooled heat dissipation device for multiple electrical modules has a good heat dissipation effect on high-power power electronic components. The design of the top fans arranged in a row not only saves space, but also makes the air output of each radiator module uniform. Even if a certain fan fails, it will not affect a single module and cause system failure. This design greatly reduces the overall space of the system and has a good heat dissipation performance.

Description

Technical Field

[0001] The utility model relates to power electronic module heat dissipation equipment, in particular to an air-cooling heat dissipation device for multiple electrical modules. Background Art

[0002] In order to meet the needs of high heat density heat dissipation in power electronics technology, various heat dissipation methods have emerged. The current mainstream heat dissipation methods are divided into air cooling and liquid cooling. Air cooling has a simple structure, low price, and mature technology. The fans commonly used for air cooling are divided into axial flow fans and centrifugal fans. Axial flow fans have relatively low wind speed, while centrifugal fans are relatively large in size, and they need to be designed in terms of selection. Compared with air cooling, liquid cooling has a good heat dissipation effect, but it is more complicated to maintain and has a high price cost. Therefore, choosing a suitable heat dissipation method in large-scale integrated design has become a key factor in determining the performance of power electronics.

[0003] In existing power electronic container energy storage systems, a single axial flow fan is often used to dissipate heat from the radiator. Since the axial flow fan requires a smooth air path when running, the area of ​​the entire system will be very large, and the wind speed of the axial flow fan is relatively low, which cannot meet the heat dissipation requirements of high-power components. In order to seek a larger air volume, the size of the fan is often increased, which increases the cost and space.

[0004] In view of the above-mentioned defects, the designers have actively carried out research and innovation in order to create an air-cooled heat dissipation device for multiple electrical modules to make it more valuable for industrial use. Summary of the invention

[0005] In order to solve the above technical problems, the purpose of the utility model is to provide an air-cooling heat dissipation device for multiple electrical modules.

[0006] The utility model discloses an air-cooling heat dissipation device for multiple electrical modules, comprising two groups of mounting frames arranged back to back, an air duct between the mounting frames, a plurality of centrifugal fans installed at the top of the air duct, a plurality of groups of electrical modules installed on the side walls of the mounting frames, and a fan baffle installed between adjacent centrifugal fans.

[0007] This air-cooling heat dissipation device for multiple electrical modules has a larger air duct, and a plurality of centrifugal fans are arranged at the top of the air duct, which can discharge the heat generated by the electrical modules during centrifugal operation.

[0008] Furthermore, a heat dissipation back plate is provided on the inner side of the mounting frame, the electrical module is fixed on the heat dissipation back plate, and the two heat dissipation back plates and the baffle plates at the ends form an air duct.

[0009] The heat dissipation back plate is made of aluminum with good thermal conductivity to improve the efficiency of heat conduction.

[0010] Furthermore, the middle portion of the electrical module is hollow and communicates with the side wall of the air duct for air flow to pass through.

[0011] The hollow structure in the middle of the electrical module facilitates airflow and improves the efficiency of heat exchange.

[0012] Furthermore, there are multiple groups of heat dissipation fins in the middle of the electrical module.

[0013] The heat sink fins in the middle of the electrical module can improve the efficiency of heat exchange.

[0014] Furthermore, there are a plurality of cross bracing beams on the side walls of the mounting frame, and two parallel supporting beams are placed on the cross bracing beams, and the supporting beams are in contact with the bottom of the electrical module.

[0015] The cross bracing beam on the mounting frame provides a mounting structure for the supporting beam, and the supporting beam is used to support the electrical module, thereby completing the segmented fixed installation of the electrical module.

[0016] Furthermore, the end of the mounting frame is an end plate, and a plurality of air windows are formed on the end plate.

[0017] The air louvers installed on the end plates are used for the inflow of external air to improve the efficiency of heat dissipation.

[0018] Through the above scheme, the present invention has at least the following advantages: this air-cooled heat dissipation device for multiple electrical modules has a good heat dissipation effect on high-power power electronic components. The design of the top fans arranged in a row not only saves space, but also makes the air output of each radiator module uniform. Even if a fan fails, it will not affect a single module and cause system failure. This design greatly reduces the overall space of the system and has better heat dissipation performance.

[0019] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings required for use in the embodiment will be briefly introduced below. It should be understood that the following drawings only show a certain embodiment of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 ;

[0023] Figure 3 The utility model Figure 1 Schematic diagram of the structure without the end plate;

[0024] In the figure, 1, mounting frame, 2, air duct, 3, centrifugal fan, 4, electrical module, 5, fan baffle, 6, heat dissipation back plate, 7, cross bracing beam, 8, supporting beam, 9, end plate, and 10, air window. DETAILED DESCRIPTION

[0025] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0026] join Figure 1 In this air-cooling heat dissipation device for multiple electrical modules, two mounting frames 1 are arranged back to back, and an air duct 2 is formed between the mounting frames 1. The air duct 2 is used for the circulation of airflow. A plurality of centrifugal fans 3 are arranged at the top of the air duct 2. A single centrifugal fan 3 can operate independently. Even if a certain centrifugal fan fails, the normal operation of the heat dissipation of the entire device can be ensured. A fan baffle 5 is installed between adjacent centrifugal fans 3. The baffle 5 is used to reduce the wind resistance between the centrifugal fans 3 and avoid mutual interference between the centrifugal fans 3.

[0027] The inner side of the mounting frame 1 is a heat dissipation back plate 6, which is made of aluminum or copper with good heat dissipation performance. The electrical module 4 is in contact with the heat dissipation back plate 6 to facilitate heat conduction. Combined with the rapid flow of airflow, the heat dissipation efficiency can be improved.

[0028] The middle of each electrical module 4 is hollow and connected to the air duct 2, so that the external airflow passes through the middle of the electrical module 4 and then enters the air duct 2, so that the airflow can be in good contact with the electrical module 4, thereby improving the heat dissipation effect.

[0029] A plurality of heat dissipation fins are installed in the hollow structure in the middle of the electrical module 4 . These fins are made of aluminum and utilize the high thermal conductivity of aluminum to improve the heat dissipation of the electrical module 4 .

[0030] See also Figure 2 There are multiple cross beams 7 for installing support beams 8 on the side wall of the mounting frame 1. The support beams 8 are in contact with the bottom of the electrical module 4 to improve the supporting effect and prevent the electrical module 4 from falling.

[0031] An end plate 9 is provided at the end of the mounting frame 1. The air windows 10 opened on the end plate 9 also facilitate the inflow of air, thereby improving the efficiency of the entry of external cold air and indirectly improving the heat dissipation effect.

[0032] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0033] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0034] Finally: The above description is only a preferred implementation mode of the present utility model and is not intended to limit the present utility model. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. An air-cooling heat dissipation device for multiple electrical modules, comprising two sets of mounting frames (1) arranged in back-to-back relation, characterized in that: An air duct (2) is provided between the mounting frames (1), a plurality of centrifugal fans (3) are installed at the top of the air duct (2), a plurality of groups of electrical modules (4) are installed on the side walls of the mounting frames (1), and a fan baffle (5) is installed between adjacent centrifugal fans (3).

2. The air-cooling heat dissipation device for multiple electrical modules according to claim 1, characterized in that: A heat dissipation back plate (6) is provided on the inner side of the mounting frame (1), and the electrical module (4) is fixed on the heat dissipation back plate (6). The two heat dissipation back plates (6) and the baffle plates at the ends form an air duct (2).

3. The air-cooling heat dissipation device for multiple electrical modules according to claim 2, characterized in that: The middle part of the electrical module (4) is hollow and communicates with the side wall of the air duct (2) for air flow to pass through.

4. The air-cooling heat dissipation device for multiple electrical modules according to claim 3, characterized in that: A plurality of groups of heat dissipation fins are arranged in the middle of the electrical module (4).

5. The air-cooling heat dissipation device for multiple electrical modules according to claim 4, characterized in that: There are a plurality of cross beams (7) on the side wall of the mounting frame (1), and two parallel support beams (8) are placed on the cross beams (7), and the support beams (8) are in contact with the bottom of the electrical module (4).

6. The air-cooling heat dissipation device for multiple electrical modules according to claim 5, characterized in that: The end of the mounting frame (1) is an end plate (9), and a plurality of air windows (10) are formed on the end plate (9).

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