Air-cooled three-level module and assembly thereof

Abstract

The utility model discloses an air-cooled three-level module and an assembly thereof. Comprising a module frame; the bus capacitor unit is arranged in the middle of the module frame; the upper radiator and the lower radiator are arranged on the upper portion and the lower portion of the module frame respectively. A plurality of outer and inner tube groups are respectively arranged on the upper radiator and the lower radiator, and each inner and outer tube group consists of an outer tube, an inner tube and an outer tube which are arranged in a straight line; the bus capacitor laminated busbar is connected with the outer tube; the first alternating current busbar assembly and the second alternating current busbar assembly are connected with the inner pipes located on the upper radiator and the lower radiator respectively. And the connection laminated busbar is respectively connected with the positive, zero and negative terminals of the inner tube and the outer tube. The three-level module has the advantages that the heat dissipation effect of the inner tube and the outer tube can be effectively improved, and then the stability of the three-level module is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power electronics, in particular to an air-cooled three-level module and a component thereof. Background Art

[0002] The life and stability of the three-level module mainly depend on its inner tube and outer tube, and the stability and life of the inner tube and outer tube mainly depend on whether they can dissipate heat quickly. Both the inner tube and the outer tube include multiple IGBTs (Insulated Gate Bipolar Transistor). The three-level module in the prior art includes a radiator, an inner tube and an outer tube, and the inner tube and the outer tube are fixed on the radiator, arranged in a finished product font, and the heat dissipation airflow blows from one end of the radiator to the other end, and the heat dissipation airflow first flows through the position where the radiator is opposite to the outer tube, and then flows through the position where the radiator is opposite to the inner tube. However, the heat consumption of the inner tube is greater than the heat consumption of the outer tube. During the process of the heat dissipation airflow flowing from the air inlet position to the air outlet position, the temperature gradually increases, resulting in poor heat dissipation effect of the inner tube, thereby reducing the load capacity of the three-level module.

[0003] Therefore, the utility model provides an air-cooled three-level module and components thereof, which can effectively improve the heat dissipation effect of the inner tube and the outer tube, thereby improving the stability of the three-level module. Utility Model Content

[0004] The utility model aims to provide an air-cooled three-level module, wherein a plurality of groups of outer and inner tube groups are respectively arranged on the upper radiator and the lower radiator, and each group of inner and outer tube groups is composed of an outer tube-inner tube-outer tube arranged in a "one" shape, which can effectively improve the heat dissipation effect of the inner tube and the outer tube, thereby improving the stability of the three-level module.

[0005] The utility model aims to provide an air-cooled three-level module assembly, which is respectively provided with an upper air cavity and an upper fan, a lower air cavity and a lower fan above and below a plurality of air-cooled three-level modules, so as to provide a heat dissipation effect for the plurality of air-cooled three-level modules, thereby improving the stability of the three-level modules.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions, including:

[0007] Module framework;

[0008] A busbar capacitor unit, which is arranged in the middle of the module frame;

[0009] An upper radiator and a lower radiator are respectively arranged at the upper part and the lower part of the module frame;

[0010] A plurality of groups of outer and inner tube groups, which are respectively arranged on the upper radiator and the lower radiator, each group of inner and outer tube groups is composed of an outer tube-inner tube-outer tube arranged in a straight line;

[0011] A busbar capacitor laminated busbar, which is electrically connected to the busbar capacitor unit and the outer tube respectively;

[0012] A first AC busbar assembly and a second AC busbar assembly, which are respectively connected to the inner tubes located on the upper radiator and the lower radiator;

[0013] Connect the laminated busbars, which are respectively connected to the positive, zero and negative terminals of the inner tube and the outer tube;

[0014] Wherein, an air inlet hole is provided at a position of the module frame corresponding to the busbar capacitor unit, and the air inlet hole is respectively opposite to the air inlet side of the upper radiator and the lower radiator.

[0015] Preferably, the busbar capacitor unit is connected to the module frame by screws; the upper radiator and the lower radiator are respectively set on the module frame by screws, and the multiple groups of outer and inner tube groups are respectively fixed to the upper radiator and the lower radiator by screws.

[0016] A wind-cooled three-level module assembly, comprising a plurality of wind-cooled three-level modules as described in any one of the above items, and an upper wind chamber and an upper fan arranged above the plurality of wind-cooled three-level modules, and a lower wind chamber and a lower fan arranged below the plurality of wind-cooled three-level modules; the air inlets of the upper wind chamber and the lower wind chamber are respectively connected to the air outlet sides of the upper radiators and the lower radiators of the plurality of three-level modules, and the air outlets of the upper wind chamber and the lower wind chamber are respectively connected to the upper fan and the lower fan.

[0017] Preferably, the multiple air-cooled three-level modules are distributed along the length direction of the upper air cavity and the lower air cavity; there are multiple upper fans, and the multiple upper fans are distributed along the length direction of the upper air cavity; there are multiple lower fans, and the multiple lower fans are distributed along the length direction of the lower air cavity.

[0018] Preferably, it also includes:

[0019] The laminated busbar connects the plurality of air-cooled three-level modules in sequence.

[0020] The beneficial effects of the utility model are as follows: a plurality of groups of outer and inner tube groups are respectively arranged on the upper radiator and the lower radiator, and each group of inner and outer tube groups is composed of an outer tube-inner tube-outer tube arranged in an "I" shape, which can effectively improve the heat dissipation effect of the inner tube and the outer tube, thereby improving the stability of the three-level module; an upper air cavity and an upper fan, a lower air cavity and a lower fan are respectively arranged above and below the plurality of air-cooled three-level modules, which can provide a heat dissipation effect for the plurality of air-cooled three-level modules, thereby improving the stability of the three-level modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The utility model is a three-dimensional air-cooled three-level module Figure 1.

[0022] Figure 2 The utility model is a three-dimensional air-cooled three-level module Figure 2 .

[0023] Figure 3 The utility model is a three-dimensional air-cooled three-level module component Figure 1 .

[0024] Figure 4 The utility model is a three-dimensional air-cooled three-level module component Figure 2 . DETAILED DESCRIPTION

[0025] The utility model is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement it according to the description.

[0026] It should be understood that terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or other elements or combinations thereof.

[0027] like Figure 1-4 As shown, an air-cooled three-level module 100 of the utility model includes:

[0028] Module frame 110;

[0029] A busbar capacitor unit 120, which is disposed in the middle of the module frame 110;

[0030] An upper heat sink 130 and a lower heat sink 140, which are respectively disposed at the upper portion and the lower portion of the module frame 110;

[0031] Multiple groups of outer and inner tube groups, which are respectively arranged on the upper radiator 130 and the lower radiator 140, each group of inner and outer tube groups is composed of an outer tube 151-inner tube 152-outer tube 151 arranged in a "one" shape;

[0032] A bus capacitor laminated busbar 161, which is electrically connected to the bus capacitor unit 120 and the outer tube 151 respectively;

[0033] A first AC busbar assembly 171 and a second AC busbar assembly 172 are connected to the inner tube 152 located on the upper radiator 130 and the lower radiator 140 respectively;

[0034] Connect the laminated busbar 180, which is connected to the positive, zero and negative terminals of the inner tube 152 and the outer tube 151 respectively;

[0035] An air inlet hole 111 is provided at a position of the module frame 110 corresponding to the bus capacitor unit 120 , and the air inlet hole 111 is opposite to the air inlet side 131 and the air inlet side 141 of the upper radiator 130 and the lower radiator 140 , respectively.

[0036] In another embodiment, the busbar capacitor unit 120 is connected to the module frame 110 by screws 190; the upper radiator 130 and the lower radiator 140 are respectively set on the module frame 110 by screws 190, and the multiple groups of outer and inner tube groups are respectively fixed to the upper radiator 130 and the lower radiator 140 by screws 190.

[0037] An air-cooled three-level module assembly 200 comprises a plurality of air-cooled three-level modules 100 as described in any one of the above items, and an upper air chamber 210 and an upper fan 220 arranged above the plurality of air-cooled three-level modules 100, and a lower air chamber 230 and a lower fan 240 arranged below the plurality of air-cooled three-level modules 100; the air inlets of the upper air chamber 210 and the lower air chamber 230 are respectively connected to the air outlet sides of the upper radiators 130 and the lower radiators 140 of the plurality of three-level modules, and the air outlets of the upper air chamber 210 and the lower air chamber 230 are respectively connected to the upper fan 220 and the lower fan 240.

[0038] In another embodiment, the plurality of air-cooled three-level modules 100 are distributed along the length direction of the upper air cavity 210 and the lower air cavity 230; the number of the upper fans 220 is multiple, and the plurality of upper fans 220 are distributed along the length direction of the upper air cavity 210; the number of the lower fans 240 is multiple, and the plurality of lower fans 240 are distributed along the length direction of the lower air cavity 230. As a preferred embodiment, there are two upper fans 220 and two lower fans 240.

[0039] In another embodiment, the system further includes: a laminated busbar 250 which connects the plurality of air-cooled three-level modules 100 in sequence.

[0040] During use, air enters the upper radiator 130 and the lower radiator 140 from the air inlet 111, enters the upper air chamber 210 and the lower air chamber 230 through the upper radiator 130 and the lower radiator 140, and is discharged by the upper fan 220 and the lower fan 240. In this process, the inner tube 152 and the outer tube 151 are arranged in a "one" shape, so that the path of the upper radiator 130 and the lower radiator 140 along the air duct direction is short enough, which can improve the working efficiency of the upper fan 220 and the lower fan 240. The upper fan 220 and the lower fan 240 provide sufficient air volume to achieve high heat dissipation efficiency, thereby improving the stability of the air-cooled three-level module 100.

[0041] In summary, the utility model provides an air-cooled three-level module 1, wherein a plurality of groups of outer and inner tube groups are respectively arranged on the upper radiator and the lower radiator, and each group of inner and outer tube groups is composed of an outer tube-inner tube-outer tube arranged in an "I" shape, which can effectively improve the heat dissipation effect of the inner tube and the outer tube, thereby improving the stability of the three-level module; an upper air cavity and an upper fan, a lower air cavity and a lower fan are respectively provided above and below the plurality of air-cooled three-level modules, which can provide a heat dissipation effect for the plurality of air-cooled three-level modules, thereby improving the stability of the three-level modules.

[0042] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation modes. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. An air-cooled three-level module, characterized in that: include: Module framework; A busbar capacitor unit, which is arranged in the middle of the module frame; An upper radiator and a lower radiator are respectively arranged at the upper part and the lower part of the module frame; A plurality of groups of outer and inner tube groups, which are respectively arranged on the upper radiator and the lower radiator, each group of inner and outer tube groups is composed of an outer tube-inner tube-outer tube arranged in a "one" shape; A busbar capacitor laminated busbar, which is electrically connected to the busbar capacitor unit and the outer tube respectively; A first AC busbar assembly and a second AC busbar assembly, which are respectively connected to the inner tubes located on the upper radiator and the lower radiator; Connect the laminated busbars, which are respectively connected to the positive, zero and negative terminals of the inner tube and the outer tube; Wherein, an air inlet hole is provided at a position of the module frame corresponding to the busbar capacitor unit, and the air inlet hole is respectively opposite to the air inlet side of the upper radiator and the lower radiator.

2. The air-cooled three-level module according to claim 1, characterized in that: The busbar capacitor unit is connected to the module frame by screws; the upper radiator and the lower radiator are respectively arranged on the module frame by screws, and the multiple groups of outer and inner tube groups are respectively fixed to the upper radiator and the lower radiator by screws.

3. An air-cooled three-level module assembly, characterized in that: It comprises a plurality of air-cooled three-level modules as described in any one of claims 1 to 2, and an upper air cavity and an upper fan arranged above the plurality of air-cooled three-level modules, and a lower air cavity and a lower fan arranged below the plurality of air-cooled three-level modules; the air inlets of the upper air cavity and the lower air cavity are respectively connected to the air outlet sides of the upper radiators and the lower radiators of the plurality of three-level modules, and the air outlets of the upper air cavity and the lower air cavity are respectively connected to the upper fan and the lower fan.

4. The air-cooled three-level module assembly according to claim 3, characterized in that: The multiple air-cooled three-level modules are distributed along the length direction of the upper air cavity and the lower air cavity; there are multiple upper fans, and the multiple upper fans are distributed along the length direction of the upper air cavity; there are multiple lower fans, and the multiple lower fans are distributed along the length direction of the lower air cavity.

5. The air-cooled three-level module assembly according to claim 3, characterized in that: Also includes: The laminated busbar connects the plurality of air-cooled three-level modules in sequence.

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