CN221354835U

CN221354835U - Inverter box heat abstractor and inverter

Info

Publication number: CN221354835U
Application number: CN202322890356.4U
Authority: CN
Inventors: 王俊; 丁倩; 王涛; 黄敏; 方刚; 向军
Original assignee: Goodwe Technologies Co Ltd
Current assignee: Goodwe Technologies Co Ltd
Priority date: 2023-10-27
Filing date: 2023-10-27
Publication date: 2024-07-16
Anticipated expiration: 2033-10-27

Abstract

The utility model discloses an inverter box body heat dissipation device and an inverter, and relates to the technical field of photovoltaics, wherein the inverter box body heat dissipation device comprises a box body, a high-loss power device and a low-loss power device are fixedly arranged in the box body, heat dissipation strips for heat dissipation are arranged on the back surface of the box body in a row and are arranged on the box body at intervals along the length direction of the box body, the lengths of the heat dissipation strips in each row are the same, the lengths of the heat dissipation strips arranged in each row from top to bottom are gradually increased or decreased in a layer-by-layer manner, the box body comprises a high-loss heat dissipation area and a low-loss heat dissipation area, the high-loss power device is arranged in the high-loss heat dissipation area, and the low-loss power device is arranged in the low-loss heat dissipation area; according to the inverter box heat dissipation device, the high-loss power device is arranged in the high heat dissipation area, and the low-loss power device is arranged in the low heat dissipation area, so that the heat dissipation areas of the high heat dissipation area and the low heat dissipation area are complementary, and the purposes of reducing the cost and increasing the heat dissipation effect are achieved on the basis of effective heat dissipation.

Description

Inverter box heat abstractor and inverter

Technical Field

The utility model relates to the technical field of photovoltaics, in particular to an inverter box heat dissipation device and an inverter.

Background

The inverter is a device for converting direct current into alternating current, and has wide application in the field of new energy. Various inverters are provided with a large number of electronic elements in a box body, certain heat is inevitably generated in use, and particularly in a large-scale photovoltaic grid-connected power generation system, the large-power grid-connected inverter can generate a large amount of heat in the operation process, and the operation of the whole photovoltaic power generation system can be influenced by heat accumulation. To solve this problem, a fan is arranged on the box body for cooling, and meanwhile, a heat dissipation rib is arranged on the surface of the box body for heat dissipation in a matching way. However, the heat dissipation fins are all arranged in a straight line, so that the heat convection coefficient of the surfaces of the heat dissipation fins is smaller, and the heat dissipation effect is poor.

Therefore, how to improve the heat dissipation efficiency of the inverter case is a technical problem that needs to be solved by those skilled in the art.

Disclosure of utility model

The utility model aims to provide an inverter box heat dissipation device and an inverter, and the heat dissipation efficiency of the inverter box is improved.

In order to achieve the above object, the utility model provides a heat dissipating device for an inverter box, comprising a box body, wherein a high-loss power device and a low-loss power device are fixedly arranged in the box body, heat dissipating strips for dissipating heat are arranged on the back of the box body in rows, each row of heat dissipating strips are arranged on the box body at intervals along the length direction of the box body, the length of each row of heat dissipating strips is the same, the length of each row of heat dissipating strips arranged from top to bottom increases gradually or decreases gradually, the box body comprises a high-heat dissipating area and a low-heat dissipating area, the high-loss power device is arranged in the high-heat dissipating area, and the low-loss power device is arranged in the low-heat dissipating area.

Preferably, in the two adjacent rows of the heat dissipation strips, the heat dissipation strips on one row are opposite to the interval positions between the two adjacent heat dissipation strips on the other row, and the cross sections of the heat dissipation strips are in a water drop-shaped structure.

Preferably, an inclined plane formed by the tail ends of the radiating strips in each row from top to bottom forms a first inclined angle with the outer wall of the box body.

Preferably, the first included angle is an acute angle.

Preferably, the high-loss power device is disposed above the low-loss power device.

Preferably, the heat dissipation strips are arranged on the box body in at least 10 rows, and the number of the heat dissipation strips in each row is not less than 12.

An inverter comprises the inverter box heat dissipation device.

Compared with the prior art, the heat dissipation strips are arranged on the back of the box body in a row, each row of heat dissipation strips are arranged at intervals along the length direction of the box body, the lengths of the heat dissipation strips arranged from top to bottom are the same, the lengths of the heat dissipation strips arranged from top to bottom are gradually increased or decreased, and as the heat generated in the working process of the high-loss power device and the low-loss power device is different, the area corresponding to the high-loss power device and the box body is a heat enrichment area, and the heat dissipation performance of the box body positioned in the heat enrichment area is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of an inverter case heat dissipating device according to an embodiment of the present utility model;

Fig. 2 is a front view of a heat dissipating device for an inverter case according to an embodiment of the present utility model;

FIG. 3 is an enlarged schematic view of area B of FIG. 2;

Fig. 4 is a stepped cross-sectional view of fig. 3.

Wherein:

1-box, 2-high-loss power device, 3-low-loss power device, 4-heat dissipation strip, 5-circuit board assembly, 6-power terminal.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The present utility model will be further described in detail below with reference to the drawings and detailed description for the purpose of enabling those skilled in the art to better understand the aspects of the present utility model.

Referring to fig. 1-4, the heat dissipation device for an inverter box provided by the application comprises a box body 1, a high-loss power device 2 and a low-loss power device 3 are fixedly arranged in the box body 1, a power terminal 6 is fixedly arranged at the bottom end of the box body 1, the power terminal 6 comprises a direct current input end and an alternating current output end, a circuit board assembly 5 is fixedly arranged in the box body 1, the high-loss power device 2 and the low-loss power device 3 are connected between the direct current input end and the alternating current output end, the circuit board assembly 5 is in signal connection with the high-loss power device 2 and the low-loss power device 3 so as to be assembled into the inverter, heat dissipation strips 4 for heat dissipation are arranged on the back surface of the box body 1 in a row, each row of heat dissipation strips 4 are arranged on the box body 1 at intervals along the length direction of the box body 1, the length of each row of heat dissipation strips 4 is the same from top to bottom, the length of each row of heat dissipation strips 4 is gradually increased or gradually decreased, for example, the length of each row of heat dissipation strips 4 is gradually increased gradually, namely the heat dissipation strips 4 is gradually increased gradually, the length of the heat dissipation strips 4 are arranged gradually, and the heat dissipation areas of the heat dissipation strips are arranged gradually from top to bottom the box body 1 are arranged gradually, and are opposite to the heat dissipation areas of the heat dissipation strips are arranged gradually, and are arranged at the heat dissipation level and have the length and are lower than the heat dissipation loss and are lower than level and are respectively, and are lower than and level and are respectively.

According to the application, the radiating strips 4 are arranged on the back surface of the box body 1 in a row, each row of radiating strips 4 is arranged at intervals along the length direction of the box body 1, the lengths of the radiating strips 4 arranged in each row from top to bottom are the same, the lengths of the radiating strips 4 arranged in each row are gradually increased or decreased, and as the heat generated in the working process of the high-loss power device 2 and the low-loss power device 3 is different, the areas corresponding to the high-loss power device 2 and the box body 1 are heat enrichment areas, and the heat radiation performance of the box body 1 in the heat enrichment areas is improved.

On the basis of the above embodiment, in two adjacent rows of heat dissipation strips 4, the heat dissipation strip 4 on one row is opposite to the interval position between two adjacent heat dissipation strips 4 on the other row, the cross section of the heat dissipation strip 4 is in a water drop-shaped structure, and the cross section of the heat dissipation strip 4 is in a water drop-shaped structure or an irregular prismatic shape.

The purpose of the arrangement is that in two adjacent rows of radiating strips 4, the radiating strips 4 on one row are opposite to the interval positions between the two adjacent radiating strips 4 on the other row, so that the radiating strips 4 are arranged alternately in a staggered way on the box body 1, and thus, the air flow along any direction of the radiating strips 4 can smoothly flow through gaps among the radiating strips 4, the air flow is convenient, and the cross section of the radiating strips 4 is of a water drop-shaped structure, when the air flow passes through the radiating strips 4, two air flows are formed after the air flow passes through the radiating strips 4 due to the fact that the radiating strips 4 are not mutually connected and in a raindrop bionic mode, so that the left air flow and the right air flow are split, the air flow is further split again, a strong turbulence effect is formed, and an air flow rich area is quickly transferred to an air flow shortage position, so that the heat dissipation of the radiating strips 4 is facilitated, the heat exchange efficiency is improved, and the heat dissipation effect of the inverter box body is improved.

Specifically, an inclined plane formed by the tail end of each row of heat dissipation strips 4 from top to bottom and the outer wall of the box body 1 form a first inclined angle, specifically, the first inclined angle is N degrees and is an acute angle, and the length of each row of heat dissipation strips 4 from top to bottom, namely, the heat dissipation area of the heat enrichment area and the heat normal area, can be adjusted by adjusting the angle of the first inclined angle.

On the basis of the above embodiment, the heat dissipation strips 4 are arranged on the case 1 in not less than 10 rows, and the number of the heat dissipation strips 4 in each row is not less than 12.

Specifically, regarding the arrangement of the heat dissipation strips 4 in rows on the box body 1 and the arrangement of the number of the heat dissipation strips 4 in each row according to the actual heat dissipation requirement of the box body 1, the heat dissipation effect of the box body can be achieved.

The application also provides an inverter, which comprises the inverter box body heat dissipation device, and particularly, the inner side of the box body 1 is coated with heat conduction glue, the circuit board assembly 5, the high-loss power device 2 and the low-loss power device 3 are all fixed on the box body 1 through screws, the high-loss power device 2 and the low-loss power device 3 are attached to the box body 1, heat generated when the high-loss power device 2 and the low-loss power device 3 work can be directly transferred to the box body 1, heat conduction efficiency is higher through the arrangement of the heat conduction glue, and heat is dissipated through the heat dissipation device on the box body 1, so that the heat dissipation effect can be improved, and the operation reliability of the high-loss power device 2 and the low-loss power device 3 is ensured.

On the basis of the above embodiment, in order to better dissipate heat of the inverter, a wind scooper is generally disposed on the inverter, so as to facilitate the air intake to flow into between the rows of heat dissipation bars 4 uniformly, and dissipate heat of the inverter as a whole.

It should be noted that in this specification relational terms such as first and second are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.

Specific examples are used herein to illustrate the principles and embodiments of an inverter case heat dissipation device and an inverter provided by the present utility model, and the above examples are only used to help understand the method and core ideas of the present utility model. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.

Claims

1. The utility model provides an inverter box heat abstractor, includes box (1), high loss power device (2) and low loss power device (3) have set firmly in box (1), its characterized in that:

The back of box (1) is provided with heat dissipation strip (4) that are used for radiating, heat dissipation strip (4) set up in row on box (1), every row heat dissipation strip (4) are followed the length direction interval setting of box (1), every row heat dissipation strip (4) the length is the same, and top-down every length level of heat dissipation strip (4) that sets up increases gradually or decreases progressively, including high heat dissipation region and low heat dissipation region in box (1), high loss power device (2) install in high heat dissipation region, low loss power device (3) install in low heat dissipation region.

2. The inverter box heat dissipation device according to claim 1, wherein in two adjacent rows of the heat dissipation strips (4), the heat dissipation strip (4) on one row is opposite to the interval position between two adjacent heat dissipation strips (4) on the other row, and the cross section of the heat dissipation strip (4) is in a water drop-shaped structure.

3. The inverter case heat sink according to claim 1, wherein an inclined plane formed by the tail ends of each row of heat dissipation strips (4) from top to bottom forms a first inclined angle with the outer wall of the case (1).

4. The inverter case heat sink of claim 3 wherein the first included angle is an acute angle.

5. Inverter case heat sink according to any of claims 1-4, wherein the heat sink strips (4) are arranged on the case (1) in not less than 10 rows, the number of heat sink strips (4) per row being not less than 12.

6. An inverter comprising an inverter casing heat sink as claimed in any one of claims 1 to 5.