Power heat dissipation module of power electronic equipment and photovoltaic inverter

Abstract

The utility model discloses a power heat dissipation module of power electronic equipment and a photovoltaic inverter, the power heat dissipation module comprises a heat dissipation cover, a heat dissipation device and an inductance module, the heat dissipation device and the inductance module are arranged in the heat dissipation cover, the heat dissipation cover is provided with a cavity, the upper end of the heat dissipation cover is open, and the lower end of the heat dissipation cover is open. The upper end is provided with a connecting piece capable of being connected with a box body of the power electronic equipment, the radiator is located in the cavity, and the radiator is connected to the radiating cover through a first positioning assembly so as to prevent the radiator from generating displacement in the radiating cover in the horizontal direction; the inductor assembly is connected with the heat dissipation cover and / or the heat dissipation device through a second positioning assembly so as to prevent the inductor assembly from generating displacement in the horizontal direction relative to the heat dissipation cover and / or the heat dissipation device. The power heat dissipation module is convenient and fast to install and low in cost.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of power electronics, and particularly relates to a power heat dissipation module of a power electronic device and a photovoltaic inverter. BACKGROUND

[0002] The back of the box body of the photovoltaic inverter is generally provided with a radiator, an inductor box and a fan assembly, etc., the fan assembly comprises a mounting frame and a fan arranged on the mounting frame, and the fan and the radiator form a heat dissipation channel to dissipate heat for the photovoltaic inverter. During assembly, the radiator and the inductor box are generally first locked in the inside of the box body to be fixed on the back of the box body; then the whole machine is turned over, and the fan assembly is locked on the back of the box body, which is relatively cumbersome to operate; and when the inductor box and the radiator are assembled, a special jig is usually required to position and assemble, which is relatively high in cost. SUMMARY

[0003] In order to solve the above technical problems, the utility model provides a power heat dissipation module of a power electronic device and a photovoltaic inverter, which is convenient and fast to install and relatively low in cost.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A power heat dissipation module of a power electronic device, comprising a heat dissipation cover, a radiator and an inductor module arranged in the heat dissipation cover, the heat dissipation cover having a cavity, the upper end of the heat dissipation cover being open, the upper end being provided with a connecting piece capable of being connected with a box body of a power electronic device, the radiator being located in the cavity, the radiator being connected to the heat dissipation cover by a first positioning assembly to prevent the radiator from moving horizontally in the heat dissipation cover, and the inductor assembly being connected to the heat dissipation cover and / or the radiator by a second positioning assembly to prevent the inductor assembly from moving horizontally relative to the heat dissipation cover and / or the radiator.

[0006] In a preferred embodiment, the inductor assembly comprises a first inductor assembly and a second inductor assembly, and the radiator is located between the first inductor assembly and the second inductor assembly.

[0007] In a preferred embodiment, the second positioning assembly comprises a first mounting groove arranged on the radiator and a first connecting pin arranged on the first inductor assembly, the first connecting pin being inserted into the first mounting groove; the second positioning assembly further comprises a second mounting groove arranged on the radiator, a third mounting groove arranged on the heat dissipation cover and a plurality of second connecting pins arranged on the second inductor assembly, the second mounting groove and the third mounting groove being oppositely arranged, and the second connecting pins being inserted into the second mounting groove and the third mounting groove.

[0008] In a preferred embodiment, the first inductor assembly is disposed outside the heat dissipation cover, and the heat sink and the second inductor assembly are disposed inside the heat dissipation cover.

[0009] In a preferred embodiment, the distance between the heat sink and the first inductor assembly and the distance between the heat sink and the second inductor assembly are 2-4 mm.

[0010] In particular, the distance between the heat sink and the first inductor assembly and the distance between the heat sink and the second inductor assembly are 2 mm.

[0011] In a preferred embodiment, the heat dissipation assembly comprises a fan, the heat dissipation cover has an air inlet side and an air outlet side, the air inlet of the fan faces the air inlet side, and the air outlet of the fan faces the air outlet side.

[0012] In a preferred embodiment, the air inlet side and the air outlet side are both in communication with the heat dissipation channels of the heat sink.

[0013] In a preferred embodiment, the heat sink comprises a heat dissipation substrate, and the heat dissipation substrate is fixedly connected with the heat dissipation cover.

[0014] In a preferred embodiment, the first positioning assembly comprises a positioning pin and a positioning hole, the heat dissipation cover is provided with the positioning pin, and the heat dissipation substrate is provided with the positioning hole.

[0015] The utility model discloses still adopt following technical scheme:

[0016] A photovoltaic inverter comprises a box body, and the photovoltaic inverter further comprises the power heat dissipation module, and the power heat dissipation module is arranged at the back of the box body.

[0017] The utility model adopts above scheme, and compared with prior art has following advantages:

[0018] The power heat dissipation module of the utility model, when assembling, first places the heat dissipation cover on the table top, then positions the heat sink through the first positioning assembly, then positions the inductor assembly through the second positioning assembly, finally places the box body above the power heat dissipation module, and fixes the heat sink, the heat dissipation cover and the inductor assembly from inside the box body, does not need to use the fixture to position throughout, according to the assembling order from bottom to top, does not need to turn over the power electronic equipment, and it is convenient and laborsaving to operate, improves work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0019] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the embodiments 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.

[0020] Figure 1 This is a schematic diagram of a photovoltaic inverter according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of a power heat dissipation module according to an embodiment of the present utility model;

[0022] Figure 3 This is a schematic diagram of the positioning of the heat sink and heat sink cover according to an embodiment of the present utility model;

[0023] Figure 4 for Figure 3 A magnified view of a section at point A in the middle;

[0024] Figure 5 This is a schematic diagram showing the fixed connection of the radiator and the heat sink according to an embodiment of the present utility model;

[0025] Figure 6 for Figure 5 A magnified view of a section at point B in the middle;

[0026] Figure 7 This is a schematic diagram of the second inductor component;

[0027] Figure 8 This is a schematic diagram of the heat sink and inductor assembly after being assembled according to an embodiment of the present invention;

[0028] Figure 9 for Figure 8 A magnified view of a section at point C;

[0029] Figure 10 This is a schematic diagram showing the fixed connection between the second inductor component and the heat sink according to an embodiment of the present invention.

[0030] in,

[0031] 100. Photovoltaic inverter; 101. Cabinet; 102. Power heat dissipation module;

[0032] 1. Heat dissipation assembly; 11. Heat sink; 111. Heat dissipation base plate; 1111. Positioning hole; 112. First mounting slot; 113. Second mounting slot; 114. Third mounting slot; 12. Heat dissipation cover; 121. Air inlet side; 122. Air outlet side; 1221. Air outlet; 123. Positioning pin; 124. Receiving cavity; 13. Fan;

[0033] 2, inductor assembly; 21, first inductor assembly; 211, first connecting pin; 22, second inductor assembly; 221, second connecting pin. DETAILED DESCRIPTION

[0034] The preferred embodiments of the present application will be described in detail with reference to the drawings. It should be noted that the description of the embodiments is for the purpose of understanding the present application and does not constitute a limitation of the present application. In addition, the technical features involved in each embodiment of the present application described below can be combined with each other as long as there is no conflict.

[0035] Referring to Figures 1 to 10 The present embodiment provides a photovoltaic inverter 100, which includes a box body 101 and a power heat dissipation module 102 arranged on the back of the box body 101. The power heat dissipation module 102 is arranged on the back of the box body 101. The power heat dissipation module is an important component of the inverter, responsible for the conversion of electrical energy and heat management to ensure that the inverter operates efficiently while maintaining stability and reliability.

[0036] Further, the power heat dissipation module 102 includes a heat dissipation assembly 1 and an inductor assembly 2, which are specifically arranged on the back of the box body 101 of the photovoltaic inverter 100. Referring to Figure 1 The heat dissipation assembly 1 and the inductor assembly 2 are arranged below the box body 101. During assembly, the box body 101 is placed directly on the power heat dissipation module 102 from top to bottom, without the need to flip the box body 101, making the installation more simple and convenient.

[0037] In combination with Figure 1 and Figure 2As shown, the heat dissipation assembly 1 comprises a heat dissipation cover 12, a heat sink 11 and a fan 13 arranged on the heat dissipation cover 12. The heat dissipation cover 12 has a cavity and an upper end of the heat dissipation cover 12 is open. The heat sink 11 is arranged in the cavity. The upper end of the heat dissipation cover 12 is provided with a connecting piece capable of being fixedly connected with the cabinet 101. Specifically, the connecting piece is a screw. The heat sink 11 is connected with the heat dissipation cover 12. The heat sink 11 comprises a heat dissipation base plate 111 and heat dissipation fins arranged on the heat dissipation base plate 111. Adjacent two heat dissipation fins form a heat dissipation channel. The heat dissipation base plate 111 is fixedly connected with the heat dissipation cover 12. Specifically, the heat dissipation base plate 111 is fixedly connected with the heat dissipation cover 12 by a fastener such as a screw. Further, before the heat dissipation base plate 111 is fixedly connected with the heat dissipation cover 12, a pre-fixing operation is performed. The heat sink 11 is connected with the heat dissipation cover 12 by a first positioning assembly to prevent the heat sink 11 from moving in a horizontal direction in the heat dissipation cover 12. The first positioning assembly comprises a positioning pin 123 and a positioning hole 111. Specifically, the heat dissipation cover 12 is provided with the positioning pin 123. The heat dissipation base plate 111 is provided with the positioning hole 111 into which the positioning pin 123 is inserted to position the heat sink 11.

[0038] The heat dissipation cover 12 has an air inlet side 121 and an air outlet side 122. The air inlet of the fan 13 faces the air inlet side 121. The air outlet of the fan 13 faces the air outlet side 122. The air inlet side 121 is provided with an air inlet. The air outlet side 122 is provided with an air outlet. The air inlet and the air outlet are in communication with the heat dissipation channels of the heat sink 11. When the fan 13 is started, cold air is sucked from the outside into the interior of the heat dissipation cover 12 and then discharged through the air outlet side 122. Specifically, the cold air enters the heat dissipation channels of the heat sink 11 from the air inlet of the air inlet side 121 and then discharged from the air outlet.

[0039] Further, the inductor assembly 2 comprises a first inductor assembly 21 and a second inductor assembly 22. The heat sink 11 is arranged between the first inductor assembly 21 and the second inductor assembly 22. The first inductor assembly 21 is arranged outside the heat dissipation cover 12. The heat sink 11 and the second inductor assembly 22 are arranged in the heat dissipation cover 12. The heat dissipation cover 12 has a shape similar to a rectangle and a large area, and has a good heat dissipation effect.

[0040] Specifically, the heat sink 11 is provided with a plurality of mounting grooves. The inductor assembly 2 is provided with a connecting pin. The connecting pin is inserted into the mounting groove to connect the inductor assembly 2 and the heat sink 11. More specifically, the inductor assembly 2 comprises an inductor box. The connecting pin and the inductor box are integrally arranged. When the heat dissipation assembly 1 and the inductor assembly 2 are connected, the connecting pin is directly inserted into the mounting groove, which is convenient to install and does not need to use a jig.

[0041] The first inductor assembly 21 is connected to the heat sink 11 through a second positioning assembly, and the second inductor assembly 22 is connected to the heat sink 11 and the heat dissipation cover 12 through a second positioning assembly. The second positioning assembly comprises a first mounting groove 112, a first connecting pin 211, a second mounting groove 113, a third mounting groove 114, and a second connecting pin 221. More specifically, the first mounting groove 112 is arranged on the heat sink 11, and the first connecting pin 211 is arranged on the first inductor assembly 21 and inserted into the first mounting groove 112; the second mounting groove 113 is arranged on the heat sink 11, and the third mounting groove 114 is arranged on the heat dissipation cover 12. The second mounting groove 113 and the third mounting groove 114 are arranged on the long edges of the heat sink 11 and the heat dissipation cover 12, respectively, and are oppositely arranged. The second connecting pin 221 is arranged on the inductor box of the second inductor assembly 22 and is inserted into the second mounting groove 113 and the third mounting groove 114. Further, two second mounting grooves 113 are arranged on the long edge of the heat sink 11, two second connecting pins 221 are arranged on the first side edge of the second inductor assembly 22 to cooperate with the second mounting grooves 113, two third mounting grooves 114 are arranged on the long edge of the heat dissipation cover 12, and two second connecting pins 221 are arranged on the second side edge of the second inductor assembly 22 to cooperate with the third mounting grooves 114. The first side edge and the second side edge are oppositely arranged and are both long edges of the second inductor assembly 22.

[0042] The distance between the heat sink 11 and the first inductor assembly 21 and the distance between the heat sink 11 and the second inductor assembly 22 are 2-4 mm. Specifically, the distance between the heat sink 11 and the first inductor assembly 21 and the distance between the heat sink 11 and the second inductor assembly 22 are 2 mm, which prevents affecting the heat dissipation between each other.

[0043] In the assembly of the photovoltaic inverter of the embodiment, the heat dissipation cover 12 is first placed on the table top, then the positioning hole 1111 of the heat sink 11 passes through the positioning pin 123 of the heat dissipation cover 12, and then a screw is screwed near the positioning pin 123. Specifically, the heat dissipation cover 12 and the heat dissipation base plate 111 are fixedly connected by using a screw, then the first inductor assembly 21 and the second inductor assembly 22 are positioned. Specifically, the first connecting pin 211 is inserted into the first mounting groove 112 of the heat sink 11, and the second connecting pin 221 is simultaneously inserted into the second mounting groove 113 of the heat sink 11 and the third mounting groove 114 of the heat dissipation cover 12. Then, the second inductor assembly 22 and the heat dissipation cover 12 are fixedly connected by a fastener such as a screw. Then, the box body 101 is placed above the power heat dissipation module 102, and the screws are locked from the inside of the box body 101 to fix the heat sink 11, the inductor assembly 2, and the heat dissipation cover 12. Finally, the upper cover of the box body 101 is locked to complete the installation.

[0044] The power heat dissipation module 102 of the embodiment can omit jig assembly, is more accurate in self-positioning and assembling, is not prone to error and has high assembly efficiency, is convenient for production and saves cost; and the box body does not need to be turned over, but is directly placed above the power heat dissipation module 102 and assembled, thereby improving work efficiency.

[0045] As shown in the specification and claims, the term "comprising" only indicates that the steps and elements explicitly identified are included, and these steps and elements do not constitute an exclusive list, and the method or device can also include other steps or elements. The term "and / or" used herein includes any combination of one or more related listed items.

[0046] It should be noted that, unless otherwise specified, when a certain feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or indirectly fixed or connected to the other feature. In addition, the up, down, left, right and other descriptions used in the utility model are only relative to the relative positions of the components of the utility model in the drawings.

[0047] The above embodiments are only for illustrating the technical concept and characteristics of the utility model, and are preferred embodiments, the purpose of which is to enable those skilled in the art to understand the content of the utility model and implement it, and the protection scope of the utility model cannot be limited thereby. Any equivalent transformation or modification made according to the principle of the utility model should be covered within the protection scope of the utility model.

Claims

1. A power dissipation module of a power electronic device, comprising a heat sink, a heat sink cover and an inductor module, the heat sink cover has a cavity, the upper end of the heat sink cover is open, the upper end is provided with a connecting piece capable of being connected with a box body of the power electronic device, and the heat sink is located in the cavity, characterized in that, The heat sink is connected to the heat dissipation cover by a first positioning assembly to prevent displacement of the heat sink in a horizontal direction within the heat dissipation cover, and the inductor module is connected to the heat dissipation cover and / or the heat sink by a second positioning assembly to prevent displacement of the inductor module relative to the heat dissipation cover and / or the heat sink in a horizontal direction.

2. The power dissipation module of claim 1, wherein, The inductor module includes a first inductor assembly and a second inductor assembly, and the heat sink is located between the first inductor assembly and the second inductor assembly.

3. The power dissipation module of claim 2, wherein, The second positioning assembly includes a first mounting groove provided on the heat sink and a first connecting pin provided on the first inductor assembly, the first connecting pin being inserted into the first mounting groove; the second positioning assembly further includes a second mounting groove provided on the heat sink, a third mounting groove provided on the heat dissipation cover, and a plurality of second connecting pins provided on the second inductor assembly, the second mounting groove and the third mounting groove being oppositely arranged, and the second connecting pins being inserted into the second mounting groove and the third mounting groove.

4. The power dissipation module of claim 3, wherein, The first inductor assembly is arranged outside the heat dissipation cover, and the heat sink and the second inductor assembly are arranged inside the heat dissipation cover.

5. The power dissipation module of claim 2, wherein, The distance between the heat sink and the first inductor assembly and between the heat sink and the second inductor assembly is 2-4 mm.

6. The power dissipation module of claim 3, wherein, The heat sink includes a fan, the heat dissipation cover has an air inlet side and an air outlet side, an air inlet of the fan faces the air inlet side, and an air outlet of the fan faces the air outlet side.

7. The power dissipation module of claim 6, wherein, The air inlet side and the air outlet side are in communication with heat dissipation channels of the heat sink.

8. The power dissipation module of claim 1, wherein, The heat sink includes a heat dissipation substrate, and the heat dissipation substrate is fixedly connected to the heat dissipation cover.

9. The power dissipation module of claim 8, wherein, The first positioning assembly includes a positioning pin and a positioning hole, the heat dissipation cover is provided with the positioning pin, and the heat dissipation substrate is provided with the positioning hole.

10. A photovoltaic inverter comprising a cabinet, characterized in that The photovoltaic inverter further includes the power heat dissipation module according to any one of claims 1 to 9, and the power heat dissipation module is arranged on a back of the box body.

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