Photovoltaic inverter

Abstract

The utility model discloses a photovoltaic inverter, which comprises a box body and an inductance module, the inductance module is arranged outside the box body and is electrically connected with a control module in the box body, the photovoltaic inverter also comprises a wind scooper positioned outside the box body, the wind scooper is provided with a heat dissipation wind guide port for guiding airflow, and the wind scooper is provided with a heat dissipation wind guide port for guiding airflow. The wind scooper is connected to the box body, one or more limiting pieces used for limiting the inductance module are arranged on the wind scooper, and the inductance module is limited between the box body and the wind scooper. According to the photovoltaic inverter, the cost is saved, and time and labor are saved at the same time.

Description

Technical Field

[0001] This utility model belongs to the field of power equipment, and specifically relates to a photovoltaic inverter. Background Technology

[0002] The assembly of inductors and heat sinks on current inverters is either done using jigs on the production line or by hand, a very cumbersome process. Without jigs, the machine needs to be manually flipped during assembly, which is inefficient, the machine is bulky, and it increases safety risks for production line workers. With jigs, the jig is first placed on the work platform, and then the boost inductor, inverter inductor, and heat sink are placed onto it. The enclosure is then threaded through the wiring harness, aligned with the holes on the jig, and secured to the inductor and heat sink with screws. After assembly, the jig needs to be removed from the bottom, again requiring the machine to be flipped, posing safety risks to the operators. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a photovoltaic inverter that saves costs, time and effort.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A photovoltaic inverter includes a housing and an inductor module. The inductor module is disposed outside the housing and electrically connected to a control module inside the housing. The photovoltaic inverter also includes a wind guide shroud located outside the housing. The wind guide shroud has heat dissipation vents for guiding airflow. The wind guide shroud is connected to the housing. The wind guide shroud has one or more limiting members for limiting the inductor module, and the inductor module is constrained between the housing and the wind guide shroud.

[0006] In a preferred embodiment, the inductor module includes a first inductor module and a second inductor module. The first inductor module includes a first inductor, which is connected to the boost circuit of the photovoltaic inverter. The second inductor module includes a second inductor, which is connected to the inverter circuit of the photovoltaic inverter.

[0007] In a preferred embodiment, the air guide shroud and the back panel of the housing are fixedly connected, and the inductor module is disposed between the air guide shroud and the back panel; the photovoltaic inverter further includes a heat sink, the air guide shroud and the first inductor module are connected by a first connecting component, the heat sink and the first inductor module are connected by a second connecting component, and the heat sink and the second inductor module are connected by a third connecting component.

[0008] In a preferred embodiment, the first connecting component includes a positioning pin disposed on the air guide shroud and a first positioning hole disposed on the first inductor module, the positioning pin being inserted into the first positioning hole to position the first inductor module; the second connecting component includes a limiting groove disposed on the first inductor module and a first positioning member disposed on the heat sink, the first positioning member being inserted into the limiting groove to connect the first inductor module and the heat sink; the third connecting component includes a second positioning member disposed on the heat sink and a second positioning hole disposed on the second inductor module, the second positioning member being inserted into the second positioning hole to connect the heat sink and the second inductor module.

[0009] In a preferred embodiment, there are two first inductor modules, and the heat sink is disposed between the two first inductor modules.

[0010] In a preferred embodiment, the photovoltaic inverter further includes a fan disposed on the housing, the fan's air outlet facing the heat sink.

[0011] In a more preferred embodiment, the photovoltaic inverter further includes a plurality of support members, and the second inductor module is disposed on the support members.

[0012] In a more preferred embodiment, the photovoltaic inverter further includes a fan disposed on the housing, the fan's air outlet facing the heat sink.

[0013] In a preferred embodiment, the first inductor module includes an inductor box, the limiting groove and the first positioning hole are disposed on the inductor box, the limiting groove is located at the upper end of the inductor box, and the first positioning hole is located at the lower end of the inductor box.

[0014] In a preferred embodiment, the first positioning member and the second positioning member are disposed on the heat dissipation substrate of the heat sink.

[0015] In a preferred embodiment, the heat sink is located between the fan and the second inductor module.

[0016] The present invention adopts the above solution and has the following advantages compared with the prior art:

[0017] The photovoltaic inverter of this utility model uses the air guide shroud on the outside of the box to limit the inductor module during assembly. After the limiting is completed, the inductor module and the air guide shroud are fixed from the inside of the box. This avoids turning the machine over and using jigs, saving costs and making the operation more labor-saving. Attached Figure Description

[0018] 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.

[0019] Figure 1 A perspective view of a photovoltaic inverter according to an embodiment of the present utility model;

[0020] Figure 2 This is another perspective view of a photovoltaic inverter according to an embodiment of the present utility model;

[0021] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0022] Figure 4 This is a top view of a photovoltaic inverter according to an embodiment of the present utility model;

[0023] Figure 5 This is another top view of a photovoltaic inverter according to an embodiment of the present invention;

[0024] Figure 6 for Figure 4 A magnified view of a section at point B in the middle;

[0025] Figure 7 This is another top view of a photovoltaic inverter according to an embodiment of the present utility model.

[0026] in,

[0027] 1. Photovoltaic inverter;

[0028] 11. Enclosure; 12. First inductor module; 121. Inductor box; 122. Inductor; 13. Second inductor module; 14. Heat sink;

[0029] 2. First connecting component; 21. Positioning pin; 22. First positioning hole;

[0030] 3. Second connecting component; 31. Limiting groove; 32. First positioning component;

[0031] 4. Third connecting component; 41. Second positioning hole;

[0032] 5. Fan; 6. Supporting components; 7. Air guide cover. Detailed Implementation

[0033] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art. It should be noted that the description of these embodiments is for the purpose of aiding understanding the present invention, but does not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0034] Reference Figures 1 to 7 As shown, this embodiment provides a photovoltaic inverter 1, including a housing 11 and a first inductor module 12, a second inductor module 13, a heat sink 14, and an air guide shroud 7 fixedly connected to the housing 11. The first inductor module 12 and the second inductor module 13 are disposed outside the housing 11 and electrically connected to a control module inside the housing 11; here, the control module refers to a power circuit board. The air guide shroud 7 is located outside the housing 11. More specifically, the air guide shroud 7 is fixedly connected to the back panel of the housing 11, and the air guide shroud 7 has heat dissipation vents for guiding airflow. The air guide shroud 7 has one or more limiting members for limiting the inductor modules, thus confining the inductor modules between the housing 11 and the air guide shroud 7.

[0035] Furthermore, the inductor module includes a first inductor module 12 and a second inductor module 13. The first inductor module 12 includes a first inductor, which is connected to the boost circuit of the photovoltaic inverter. The second inductor module 13 includes a second inductor, which is connected to the inverter circuit of the photovoltaic inverter.

[0036] The first inductor module 12, the second inductor module 13, and the heat sink 14 are disposed between the housing 11 and the air guide shroud 7. The air guide shroud 7 and the first inductor module 12 are connected by the first connecting component 2. The first inductor module 12 and the heat sink 14 are connected by the second connecting component 3. The heat sink 14 and the second inductor module 13 are connected by the third connecting component 4. The first inductor module 12, the heat sink 14, and the second inductor module 13 are installed on the housing 11 without the use of jigs, and there is no need to flip the inverter after installation. The positions of the first inductor module 12, the second inductor module 13, and the heat sink 14 on the air guide shroud 7 can be directly defined by the first connecting component 2, the second connecting component 3, and the third connecting component 4.

[0037] Furthermore, the first connecting component 2 includes a positioning pin 21 disposed on the air guide shroud 7 and a first positioning hole 22 disposed on the first inductor module 12. The positioning pin 21 is inserted into the first positioning hole 22 to position the first inductor module 12. Here, the positioning pin 21 refers to the aforementioned limiting member. There are two first inductor modules 12, and the heat sink 14 is disposed between the two first inductor modules 12. Each first inductor module 12 corresponds to two positioning pins 21, that is, each first inductor module 12 is provided with two positioning holes 22.

[0038] Combination Figure 3 and Figure 6 As shown, the second connecting component 3 includes a limiting groove 31 disposed on the first inductor module 12 and a first positioning member 32 disposed on the heat sink 14. The first positioning member 32 is inserted into the limiting groove 31 to connect the first inductor module 12 and the heat sink 14. The first positioning member 32 is specifically a first positioning post, and the limiting groove 31 is V-shaped. There are two limiting grooves 31 on each first inductor module 12.

[0039] Specifically, refer to Figure 4 As shown, the first inductor module 12 includes an inductor box 121 and an inductor 122 disposed within the inductor box 121. A limiting groove 31 and a first positioning hole 22 are disposed on the inductor box 121. The limiting groove 31 is located at the upper end of the inductor box 121, and the first positioning hole 22 is located at the lower end of the inductor box 121. This embodiment effectively eliminates the need for a fixture. By providing a limiting groove and positioning hole on the first inductor module, the installation efficiency is high, saving costs while being labor-saving and convenient.

[0040] The third connecting component 4 includes a second positioning member (not shown in the figure) disposed on the heat sink 14 and a second positioning hole 41 disposed on the second inductor module 13. When the heat sink 14 is positioned, the second positioning member is inserted into the second positioning hole 41 to connect the heat sink 14 and the second inductor module 13. Here, the second positioning member refers to a positioning post, which is inserted into the second positioning hole 41 to limit the position of the second inductor module 13. It should be noted that the first positioning member 32 and the second positioning member are disposed on the heat dissipation substrate of the heat sink 14.

[0041] The photovoltaic inverter 1 also includes fans 5 mounted on the housing 11. There are multiple fans 5, and the air outlets of the multiple fans 5 are directed toward the heat sink 14 to reduce the heat on the heat sink 14. The heat sink 14 is located between the fans 5 and the second inductor module 13. The air guide shroud 7 is also provided with multiple support members 6. The second inductor module 13 is mounted on the support members 6. The support members 6 are used to ensure that the second inductor module 13 is kept balanced, because it is difficult for the second inductor module 13 to be kept balanced by the heat sink 14 alone.

[0042] In this embodiment, during installation, the air guide shroud 7 of the photovoltaic inverter serves as the main assembly body. After the air guide shroud 7 is placed horizontally, the positioning pin 21 on the air guide shroud 7 is inserted into the first positioning hole 22 on the first inductor module 12 to achieve the positioning of the first inductor module 12. After the first inductor module 12 and the air guide shroud 7 are assembled, the heat sink 14 is positioned and assembled by engaging its own first positioning part 32 with the limiting groove 31 on the first inductor module 12. After the heat sink 14 is assembled, the second positioning part on the heat sink 14 is inserted into the second positioning hole 41 of the second inductor module 13 to achieve the positioning of the second inductor module 13. The first inductor module 12, the second inductor module 13, and the heat sink 14 form a "hand-in-hand" connection.

[0043] Positioning pins 21 are set on the air guide shroud 7 to restrict the two directions of the first inductor module 12. Then, the limiting groove 31 on the inductor box 121 cooperates with the first positioning member 32 on the heat sink 14 to restrict the direction of the heat sink 14. Finally, the second positioning member on the heat sink 14 and the second positioning hole 41 of the second inductor module 13 are used to restrict the second inductor module 13, so as to achieve quick assembly. After the components on the air guide shroud 7 are assembled, the housing 11 is passed through the inductor harness and aligned with its hole. The housing 11 and the heat sink 14, the housing 11 and the first inductor module 12, the housing 11 and the second inductor module 13, and the housing 11 and the air guide shroud 7 are fixed with locking screws.

[0044] In this embodiment, the air guide cover 7 replaces the jig on the production line. It serves two purposes: it acts as the main air guide and also functions as a jig, avoiding secondary assembly and saving costs, time, and effort.

[0045] Furthermore, in this embodiment, the air guide shroud 7 is directly used as an existing fixture to position the second inductor module 13, the first inductor module 12, and the heat sink 14. After positioning the second inductor module 13, the first inductor module 12, and the heat sink 14 in their respective positions, the housing 11 can be placed in the corresponding position and secured with screws. There is no need to flip the inverter. The entire assembly and securing process starts from the bottom layer and is stacked sequentially, which is simple, convenient, and improves work efficiency.

[0046] As indicated in this specification and claims, the terms "comprising" and "including" only indicate the inclusion of expressly identified steps and elements, and these steps and elements do not constitute an exclusive list; the method or apparatus may also include other steps or elements. The term "and / or" as used herein includes any combination of one or more of the associated listed items.

[0047] It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or it can be indirectly fixed or connected to the other feature. Furthermore, the descriptions of "upper," "lower," "left," and "right" used in this utility model are only relative to the relative positional relationships of the various components of this utility model in the accompanying drawings.

[0048] The above embodiments are only for illustrating the technical concept and features of this utility model, and are preferred embodiments. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly, and should not be construed as limiting the protection scope of this utility model. All equivalent transformations or modifications made based on the principles of this utility model should be covered within the protection scope of this utility model.

Claims

1. A photovoltaic inverter, comprising a housing and an inductor module, wherein the inductor module is disposed outside the housing and electrically connected to a control module inside the housing, characterized in that, The photovoltaic inverter also includes a wind guide shroud located outside the housing. The wind guide shroud is provided with a heat dissipation air vent to guide airflow. The wind guide shroud is connected to the housing. The wind guide shroud is provided with one or more limiting members for limiting the inductor module. The inductor module is limited between the housing and the wind guide shroud.

2. The photovoltaic inverter according to claim 1, characterized in that, The inductor module includes a first inductor module and a second inductor module. The first inductor module includes a first inductor, which is connected to the boost circuit of the photovoltaic inverter. The second inductor module includes a second inductor, which is connected to the inverter circuit of the photovoltaic inverter.

3. The photovoltaic inverter according to claim 2, characterized in that, The air guide shroud and the back panel of the housing are fixedly connected, and the inductor module is disposed between the air guide shroud and the back panel; the photovoltaic inverter also includes a heat sink, the air guide shroud and the first inductor module are connected by a first connecting component, the heat sink and the first inductor module are connected by a second connecting component, and the heat sink and the second inductor module are connected by a third connecting component.

4. The photovoltaic inverter according to claim 3, characterized in that, The first connecting component includes a positioning pin disposed on the air guide cover and a first positioning hole disposed on the first inductor module. The positioning pin is inserted into the first positioning hole to position the first inductor module. The second connecting component includes a limiting groove disposed on the first inductor module and a first positioning member disposed on the heat sink. The first positioning member is inserted into the limiting groove to connect the first inductor module and the heat sink. The third connecting component includes a second positioning member disposed on the heat sink and a second positioning hole disposed on the second inductor module. The second positioning member is inserted into the second positioning hole to connect the heat sink and the second inductor module.

5. The photovoltaic inverter according to claim 3, characterized in that, The number of the first inductor modules is two, and the heat sink is disposed between the two first inductor modules.

6. The photovoltaic inverter according to claim 3, characterized in that, The photovoltaic inverter also includes a fan mounted on the housing, with the fan's air outlet facing the heat sink.

7. The photovoltaic inverter according to claim 3, characterized in that, The photovoltaic inverter also includes multiple support components, and the second inductor module is mounted on the support components.

8. The photovoltaic inverter according to claim 4, characterized in that, The first inductor module includes an inductor box, and the limiting groove and the first positioning hole are disposed on the inductor box. The limiting groove is located at the upper end of the inductor box, and the first positioning hole is located at the lower end of the inductor box.

9. The photovoltaic inverter according to claim 4, characterized in that, The first positioning member and the second positioning member are disposed on the heat dissipation base plate of the heat sink.

10. The photovoltaic inverter according to claim 6, characterized in that, The heat sink is located between the fan and the second inductor module.

Images