Inverter

Abstract

The utility model relates to an inverter, comprising a housing used for accommodating electronic components; the shell cover and the shell are assembled to form an accommodating space; the battery pack port is electrically connected with a battery pack; the equipment port is used for being electrically connected with an electric device; a flow guide rib is arranged in the shell cover and extends into the shell, the flow guide rib forms a cooling air channel in the containing space, the cooling air channel is provided with an air inlet and an air outlet, the air inlet is located in one side of the shell, and the air outlet is located in the other side, opposite to the air inlet, of the shell. The shell is internally provided with a cooling air duct, the cooling air duct forms a straight-through type air duct, the shell is further internally provided with a fan, the fan is located on one side of the air outlet, and the heat dissipation efficiency can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of inverters, and in particular to a cooling air duct of an inverter. Background Art

[0002] An inverter is a transformer that converts direct current into alternating current. The inverter can be connected to a battery pack. The electrical energy in the battery pack is usually direct current. The inverter converts the direct current of the battery pack into alternating current output to power various electrical devices.

[0003] When the inverter is working, the temperature rise of the electronic components in the inverter is too high, which will affect the efficiency and service life of the whole machine. The cooling air duct in the existing inverter has a chaotic path, which cannot effectively discharge air, affecting the cooling efficiency. Therefore, how to propose an inverter that can effectively reduce the internal temperature is a technical problem that needs to be solved. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides an inverter, which can effectively reduce the temperature inside the inverter and cool the electronic components.

[0005] The inverter comprises:

[0006] A housing for accommodating electronic components;

[0007] A shell cover, the shell cover is assembled with the shell body to form a receiving space;

[0008] A battery pack port, used for electrically connecting a battery pack;

[0009] Equipment port, used for electrically connecting to an electrical device;

[0010] A guide rib is arranged in the shell cover, and the guide rib extends into the shell. The guide rib forms a cooling air duct in the accommodating space. The cooling air duct has an air inlet and an air outlet. The air inlet is located on one side of the shell, and the air outlet is located on the other side of the shell opposite to the air inlet, so that the cooling air duct forms a straight-through air duct. A fan is also arranged in the shell, and the fan is located on one side of the air outlet.

[0011] Furthermore, the shell cover has a top wall, and the guide rib is arranged on the inner side of the top wall and is perpendicular to the top wall.

[0012] Furthermore, a plurality of cooling air ducts are formed in the accommodating space, and each cooling air duct is correspondingly provided with one of the fans.

[0013] Furthermore, the area of ​​the air inlet is larger than the area of ​​the air outlet.

[0014] Furthermore, the ratio of the area of ​​the air inlet to the area of ​​the air outlet is 1.3-2.

[0015] Furthermore, heat dissipation fins are arranged in the shell, and the heat dissipation fins are arranged near the high-power electronic components.

[0016] Furthermore, the high-power electronic components are arranged near the air outlet, where the cooling air duct is narrow, and the high-power electronic components include capacitors and MOS tubes.

[0017] Furthermore, a gap between the guide rib and the bottom wall of the shell is less than 5 mm.

[0018] Furthermore, the gap between the guide rib and the bottom wall of the shell is 2-4 mm.

[0019] Beneficial effects:

[0020] The cooling air duct in the inverter is a straight-through air duct, so the path of the cooling air duct is roughly straight, not curved, so the path of the cooling air flow is short, resulting in a better cooling effect. The fan is set on the air outlet side, and the high-power electronic components are set near the air outlet. The air inlet area is larger than the air outlet area, so that the wind speed near the air outlet becomes larger, improving the heat dissipation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of an inverter in an embodiment of the utility model.

[0022] Figure 2 It is a schematic diagram of the housing in the embodiment of the present utility model.

[0023] Figure 3 It is a schematic diagram of a shell cover in an embodiment of the utility model.

[0024] Figure 4 It is a schematic diagram of the inverter cooling duct in the embodiment of the utility model. DETAILED DESCRIPTION

[0025] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application.

[0026] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this utility model belongs. The "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, similar words such as "one" or "one" do not indicate quantity restrictions, but indicate that there is at least one. "Multiple" or "several" means two and more than two. Unless otherwise specified, similar words such as "front", "rear", "lower" and / or "upper" are only for convenience of explanation and are not limited to one position or one spatial orientation. Similar words such as "include" or "include" mean that the elements or objects appearing in front of "include" or "include" include the elements or objects listed after "include" or "include" and their equivalents, and do not exclude other elements or objects. Similar words such as "connect" or "connected" are not limited to physical or mechanical connections, and can include electrical connections, whether direct or indirect. The singular forms "a", "said" and "the" used in this specification and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0027] The present application provides an inverter, such as Figures 1 to 4 As shown, the inverter 100 includes a housing 1, a housing cover 2, a battery pack port, and a device port. Figure 2 As shown, a PCB board 3 is placed in the housing 1, and a variety of electronic components are welded on the PCB board 3, that is, the housing is used to accommodate electronic components. The housing cover 2 is assembled with the housing 1 to form a receiving space. After the housing cover 2 and the housing 1 are assembled, a battery pack port and a device port are formed. The battery pack port is used to electrically connect the battery pack as the input power supply of the inverter. The device port is used to electrically connect the electrical device to output AC power to the electrical device.

[0028] like Figure 3 As shown, the shell cover 2 is provided with a guide rib 4. Specifically, the shell cover 2 has a top wall 21, and the shell 1 has a bottom wall. The guide rib 4 is provided on the inner side of the top wall 21 and is perpendicular to the top wall 21.

[0029] The guide rib 4 extends into the housing 1, and the gap between the guide rib 4 and the bottom wall of the housing 1 is less than 5 mm (or the gap between the guide rib 4 and the PCB board 3 is less than 5 mm). The guide rib 4 forms a cooling air duct 7 with the bottom wall of the housing 1 and the top wall 21 of the shell cover 2 in the accommodating space. The cooling air duct 7 has an air inlet 71 and an air outlet 72. The air inlet 71 is located on one side of the housing 1, and the air outlet 72 is located on the other side of the housing 1 opposite to the air inlet 71, so that the cooling air duct 7 forms a straight-through air duct. A fan 5 is also provided in the housing 1, and the fan 5 is located on one side of the air outlet 72.

[0030] like Figure 1 As shown, in the present application, the inverter 100 is provided with a fan 5 on the side of the air outlet 72 of the cooling air duct 7. When the fan 5 works, a negative pressure is generated on the outlet side, forming a suction force, and the air outside the inverter 100 is sucked into the inverter 100 from the air inlet 71 side, and the heat of the electronic components inside the inverter 100 is taken away, and then blown out from the side of the air outlet 72. In addition, the cooling air duct 7 of the inverter 100 in the present application is a straight-through air duct, so the path of the cooling air duct 7 is roughly straight, not bent, so the path of the cooling air flow is short, so that the cooling effect is better.

[0031] In a specific embodiment, Figure 1 and 4 As shown, three guide ribs 4 are arranged from top to bottom in the inverter 100, namely the first guide rib 41, the second guide rib 41 and the third guide rib 43, and each guide rib 4 extends from the left side to the right side of the housing 1. Preferably, the gap between the guide rib 4 and the bottom of the housing 1 is 2 to 4 mm (or the gap between the guide rib 4 and the PCB board 3 is 2 to 4 mm). The guide rib 4 and the side wall, bottom wall of the housing 1 and the top wall 21 of the shell cover 2 form three cooling air ducts 7 in the accommodation space. Three fans 5 are arranged on the right side of the housing 1, and each fan 5 corresponds to a cooling air duct 7. The multiple cooling air ducts 7 divide the accommodation space of the inverter 100 into multiple channel parts, and each channel part corresponds to a fan 5 and a cooling air duct 7, so that the cooling effect can be improved.

[0032] Preferably, the area of ​​the air inlet 71 in the inverter 100 is larger than the area of ​​the air outlet 72. In this embodiment, the air inlet 71 of the cooling air duct 7 is wide, and the air outlet 72 is narrow, and the cooling air duct 7 generally shows a trend of gradually narrowing. Therefore, the wind speed at the air outlet 72 in the inverter 100 is greater than the wind speed at the air inlet 71, and the greater the wind speed, the better the heat dissipation effect. Preferably, the ratio of the area of ​​the air inlet 71 to the area of ​​the air outlet 72 is 1.3 to 2.

[0033] In the inverter 100, high-power electronic components including capacitors and MOS tubes are arranged near the air outlet 72. Heat dissipation fins 6 are arranged on these high-power electronic components to further improve the heat dissipation efficiency.

[0034] Special, such as Figure 1 As shown, in this embodiment, the first guide rib 41 and the second guide rib 42 are bifurcated in the middle position, the first guide rib 41 bifurcates to form a first forked branch 411 and a second forked branch 412, and the second guide rib 42 bifurcates to form a third forked branch 421 and a fourth forked branch 422. Such an arrangement makes the second forked branch 412 and the third forked branch 421 close to each other, forming a narrow air outlet 72. In addition, the first forked branch 411 and the fourth forked branch 422 are closer to the heat dissipation fin 6, thereby further narrowing the air outlet 72 where the heat dissipation fin 6 is located, so that the area of ​​the air outlet 72 is smaller than the area of ​​the air inlet 71, thereby increasing the wind speed and improving the heat dissipation efficiency. No electronic components are arranged between the first forked branch 411 and the second forked branch 412, and between the third forked branch 421 and the fourth forked branch 422, or only small-volume electronic components with low heat generation are arranged.

[0035] The above is only a preferred embodiment of the present application and does not constitute any form of limitation to the present application. Although the present application has been disclosed as a preferred embodiment as above, it is not intended to limit the present application. Any technician familiar with the profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present application. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application still falls within the scope of the technical solution of the present application.

Claims

1. An inverter, characterized in that: include: A housing for accommodating electronic components; A shell cover, the shell cover is assembled with the shell body to form a receiving space; A battery pack port, used for electrically connecting a battery pack; Equipment port, used for electrically connecting to an electrical device; A guide rib is arranged in the shell cover, and the guide rib extends into the shell. The guide rib forms a cooling air duct in the accommodating space. The cooling air duct has an air inlet and an air outlet. The air inlet is located on one side of the shell, and the air outlet is located on the other side of the shell opposite to the air inlet, so that the cooling air duct forms a straight-through air duct. A fan is also arranged in the shell, and the fan is located on one side of the air outlet.

2. The inverter according to claim 1, characterized in that: The shell cover has a top wall, and the guide rib is arranged on the inner side of the top wall and is perpendicular to the top wall.

3. The inverter according to claim 1, characterized in that: A plurality of cooling air ducts are formed in the accommodating space, and each cooling air duct is correspondingly provided with one of the fans.

4. The inverter according to claim 1, characterized in that: The area of ​​the air inlet is larger than the area of ​​the air outlet.

5. The inverter according to claim 4, characterized in that: The ratio of the area of ​​the air inlet to the area of ​​the air outlet is 1.3-2.

6. The inverter according to claim 1, characterized in that: The shell is also provided with heat dissipation fins, and the heat dissipation fins are arranged near the high-power electronic components.

7. The inverter according to claim 6, characterized in that: The high-power electronic components are arranged near the air outlet, and the cooling air duct where they are located is narrow. The high-power electronic components include capacitors and MOS tubes.

8. The inverter according to claim 1, characterized in that: The gap between the guide rib and the bottom wall of the shell is less than 5 mm.

9. The inverter according to claim 8, characterized in that: The gap between the guide rib and the bottom wall of the shell is 2-4 mm.

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