CN221409637U

CN221409637U - Micro inverter

Info

Publication number: CN221409637U
Application number: CN202323387660.3U
Authority: CN
Inventors: 徐盛强; 邓磊; 卿粤华
Original assignee: Shenzhen Daipusen New Energy Technology Co ltd
Current assignee: Shenzhen Daipusen New Energy Technology Co ltd
Priority date: 2023-12-13
Filing date: 2023-12-13
Publication date: 2024-07-23
Anticipated expiration: 2033-12-13

Abstract

The application provides a micro inverter, which comprises a shell with a containing cavity, wherein the outer peripheral surface of the shell is provided with radiating fins; the control main board is arranged in the accommodating cavity; one surface of the radiating fin is attached to the inner peripheral surface of the accommodating cavity, and the other surface of the radiating fin is attached to the control main board; and the connectors are respectively arranged on the shell. The electric energy conversion device can be respectively electrically connected with the mains supply and the energy storage equipment through a plurality of connectors so as to realize the electric energy conversion function. The heat dissipation fins are arranged on the outer peripheral surface of the shell, the heat dissipation fins are attached to the inner peripheral surface of the accommodating cavity, the heat dissipation fins are attached to the control main board and are opposite to the heat dissipation fins, and on one hand, heat emitted by the control main board can be transferred to the heat dissipation fins and is accelerated to be discharged by the heat dissipation fins; on the other hand, the heat in the accommodating chamber can be discharged by the heat dissipation fins. Therefore, the traditional air cooling heat dissipation structure or water cooling heat dissipation structure is replaced while the heat dissipation efficiency of the micro inverter is ensured, the size of the micro inverter is reduced, and the production cost is reduced.

Description

Micro inverter

Technical Field

The application belongs to the technical field of inverters, and particularly relates to a micro inverter.

Background

Currently, an inverter is a regulating device for switching power transmission between solar energy/utility power/energy storage devices, and is mainly used for converting direct current into alternating current.

However, the inverter can generate larger heat in the use process, and the traditional heat dissipation mode is to add a fan in the inverter to realize air cooling heat dissipation or to realize water cooling heat dissipation by adding a refrigeration cycle pipeline. Through air cooling heat dissipation structure or water-cooling heat dissipation structure, can greatly increased the volume of dc-to-ac converter, improve manufacturing cost.

Disclosure of utility model

An object of an embodiment of the present application is to provide a micro inverter, so as to solve the problem existing in the related art: the existing inverter can greatly increase the volume of the inverter and increase the production cost through an air cooling heat dissipation structure or a water cooling heat dissipation structure.

In order to achieve the above purpose, the technical scheme adopted by the embodiment of the application is as follows:

provided is a micro inverter including:

The shell is provided with an accommodating cavity, and the outer peripheral surface of the shell is provided with radiating fins;

The control main board is arranged in the accommodating cavity;

one surface of the radiating fin is attached to the inner peripheral surface of the accommodating cavity, the other surface of the radiating fin is attached to the control main board, and the radiating fin is arranged opposite to the radiating fin;

And the connectors are respectively arranged on the shell and are electrically connected with the control main board.

In one embodiment, the shell comprises a lower shell and an upper cover connected with the lower shell, and the lower shell and the upper cover enclose to form the accommodating chamber; the lower shell comprises a bottom plate and a coaming plate formed by extending the edge of the bottom plate towards the same side; the radiating fins are arranged on the side surface of the bottom plate facing the accommodating chamber, and the radiating fins are arranged on the side surface of the bottom plate facing away from the accommodating chamber; the joints are respectively arranged on the coaming.

In one embodiment, the upper cover is provided with a through hole communicated with the accommodating cavity, and an indicator lamp is installed in the through hole and is electrically connected with the control main board.

In one embodiment, the housing further comprises a lens covering the indicator light.

In one embodiment, the upper cover is provided with a mounting groove, and the lens is mounted in the mounting groove; the through hole is formed in the bottom surface of the mounting groove.

In one embodiment, the lower shell is square in structure, and the joints are arranged on the same side of the coaming.

In one embodiment, the micro-inverter further comprises a mounting bracket mounted to the housing.

In one embodiment, the mounting bracket includes a first bracket mounted to the housing and a second bracket coupled to the first bracket.

In one embodiment, the first bracket comprises a first mounting plate, a second mounting plate and a connecting plate, the second mounting plate is arranged in parallel with the first mounting plate at intervals, the connecting plate is used for connecting the first mounting plate and the second mounting plate, first mounting holes are respectively formed in two ends of the first mounting plate, and a mounting guide post is arranged at a position, corresponding to each first mounting hole, on the shell; the second bracket comprises a base plate arranged on the second mounting plate, extension plates extending from two ends of the base plate in a direction away from the first mounting plate, and fixing plates extending from one end of each extension plate in a direction away from the base plate; each fixed plate is arranged in parallel with the first mounting plate at intervals, and each fixed plate is provided with a second mounting hole.

In one embodiment, the first mounting plate, the second mounting plate, and the connecting plate are integrally formed; the base plate, the two extension plates and the two fixing plates are integrally formed.

The micro inverter provided by the embodiment of the application has at least the following beneficial effects: through setting up a plurality of joints on the casing, set up the control mainboard in the holding cavity of casing, a plurality of joints can be connected with commercial power and energy storage equipment electricity respectively to realize the electric energy conversion function. The heat dissipation fins are arranged on the outer peripheral surface of the shell, the heat dissipation fins are attached to the inner peripheral surface of the accommodating cavity, the heat dissipation fins are attached to the control main board and are opposite to the heat dissipation fins, and on one hand, heat emitted by the control main board can be transferred to the heat dissipation fins and is accelerated to be discharged by the heat dissipation fins; on the other hand, the heat in the accommodating chamber can be discharged by the heat dissipation fins. Therefore, the traditional air cooling heat dissipation structure or water cooling heat dissipation structure is replaced while the heat dissipation efficiency of the micro inverter is ensured, the size of the micro inverter is reduced, and the production cost is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or exemplary technical descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.

Fig. 1 is a schematic structural diagram of a micro inverter according to an embodiment of the present application;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is an exploded view of an upper cover according to an embodiment of the present application;

fig. 4 is a schematic structural view of a mounting bracket according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a first bracket according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a second bracket according to an embodiment of the present application;

Fig. 7 is a schematic structural diagram of a lower case according to an embodiment of the present application.

Wherein, each reference numeral in the figure mainly marks:

1. A housing; 10. a receiving chamber; 11. radiating fins; 12. a lower case; 121. a bottom plate; 122. coaming plate; 123. installing a guide post; 13. an upper cover; 130. a through hole; 131. a lens; 132. a mounting groove;

2. A control main board; 3. a joint; 31. an AC output connector; 32. the host machine is connected with the connector in a parallel way; 33. a solar charging connector; 34. an antenna; 35. resetting a key;

4. A mounting bracket; 41. a first bracket; 411. a first mounting plate; 412. a second mounting plate; 413. a connecting plate; 4130. a first mounting hole;

42. A second bracket; 421. a substrate; 422. an extension plate; 423. a fixing plate; 4230. and a second mounting hole.

Description of the embodiments

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise. The meaning of "a number" is one or more than one unless specifically defined otherwise.

In the description of the present application, it should be understood that the terms "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrase "in one embodiment" or "in some embodiments" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Referring to fig. 1 and 2, a micro inverter according to an embodiment of the present application will be described. The micro inverter includes a housing 1, a control main board 2, a heat sink (not shown), and a plurality of joints 3. Optionally, the housing 1 is provided with a containing chamber 10, and the outer peripheral surface of the housing 1 is provided with heat dissipation fins 11, and the heat dissipation fins 11 play a role in heat dissipation. The control main board 2 is installed in the accommodating chamber 10 to play a role in main control. The radiating fin is arranged in the accommodating chamber 10, one surface of the radiating fin is attached to the inner peripheral surface of the accommodating chamber 10, the other surface of the radiating fin is attached to the control main board 2, and the radiating fin is arranged opposite to the radiating fin 11. The radiating fins can connect the control main board 2 with the shell 1 to play a role of heat conduction. The heat sink may be a Metal-Oxide-Semiconductor (MOS) tube heat sink, which is not limited herein. A plurality of contacts 3 are mounted on the housing 1, respectively, and each contact 3 is electrically connected to the control main board 2. Wherein in an embodiment of the present application, the plurality of connectors 3 may include an AC (ALTERNATING CURRENT ) output connector 31, a host parallel connector 32, and a solar charging connector 33.

In this structure, by arranging a plurality of connectors 3 on the housing 1, and arranging the control motherboard 2 in the accommodating chamber 10 of the housing 1, the connectors 3 can be electrically connected with the mains supply and the energy storage device respectively, so as to realize the function of electric energy conversion. By arranging the radiating fins 11 on the outer peripheral surface of the shell 1, attaching the radiating fins on the inner peripheral surface of the accommodating chamber 10, attaching the radiating fins to the control main board 2, and arranging the radiating fins opposite to the radiating fins 11, on one hand, the heat emitted by the control main board 2 can be transferred to the radiating fins and can be accelerated to be discharged by the radiating fins 11; on the other hand, the heat in the accommodating chamber 10 can be discharged by the heat dissipation fins 11. Therefore, the traditional air cooling heat dissipation structure or water cooling heat dissipation structure is replaced while the heat dissipation efficiency of the micro inverter is ensured, the size of the micro inverter is reduced, and the production cost is reduced.

In one embodiment, referring to fig. 1, the micro-inverter further comprises an antenna 34 mounted on the housing 1. Which may function as a wireless communication connection through antenna 34.

In one embodiment, referring to fig. 1, the micro-inverter further includes a reset key 35 mounted on the housing 1. The micro-inverter can be restarted by the reset button 35.

In one embodiment, referring to fig. 2 and 7, as a specific implementation manner of the micro inverter provided in the embodiment of the present application, the housing 1 includes a lower shell 12 and an upper cover 13 connected to the lower shell 12, where the lower shell 12 and the upper cover 13 enclose a housing chamber 10. The lower case 12 includes a bottom plate 121 and a shroud 122 formed by extending the edge of the bottom plate 121 toward the same side; the radiating fins are arranged on the side surface of the bottom plate 121 facing the accommodating chamber 10, and the radiating fins 11 are arranged on the side surface of the bottom plate 121 facing away from the accommodating chamber 10; the plurality of joints 3 are mounted on the shroud 122, respectively. Wherein, the lower shell 12 and the upper cover 13 can be connected by fasteners such as screws; or the lower shell 12 and the upper cover 13 can be connected through a buckling structure. In this structure, the heat dissipation fins 11 and the heat dissipation fins are respectively disposed on two sides of the bottom plate 121, so that the heat dissipated by the control motherboard 2 can be dissipated by the heat dissipation fins and the heat dissipation fins 11, which is helpful for improving the heat dissipation efficiency.

In an embodiment, referring to fig. 3, as a specific implementation manner of the micro inverter provided in the embodiment of the present application, a through hole 130 is formed in the upper cover 13 and is in communication with the accommodating chamber 10, and an indicator lamp (not shown) is installed in the through hole 130 and is electrically connected to the control motherboard 2. With this structure, the indicator lamp can be used for indicating the working state of the micro-inverter.

In an embodiment, referring to fig. 3, as a specific implementation of the micro inverter provided in the embodiment of the present application, the housing 1 further includes a lens 131 covering the indicator light. The lens 131 may be a light guide plate. With this structure, the light emitted from the indicator lamp can be guided and diffused by the lens 131, so as to increase the light area of the indicator lamp.

In an embodiment, referring to fig. 3, as a specific implementation of the micro inverter provided in the embodiment of the present application, a mounting groove 132 is formed on the upper cover 13, and a lens 131 is mounted in the mounting groove 132; the through hole 130 is formed at the bottom surface of the mounting groove 132. Optionally, the cross-sectional configuration of the lens 131 is consistent with the cross-sectional configuration of the mounting groove 132. In embodiments of the present application, the cross-section of the lens 131 may be circular; correspondingly, the mounting groove 132 is also circular in cross-section. With this structure, the lens 131 can be positioned and mounted by the mounting groove 132.

In one embodiment, referring to fig. 2, as a specific implementation of the micro inverter provided in the embodiment of the present application, the lower shell 12 has a square structure, and the plurality of connectors 3 are disposed on the same side of the shroud 122. Alternatively, the cross section of the shroud 122 may be rectangular, having four sides, and a plurality of connectors 3 may be provided on the same side of the shroud 122. This structure facilitates the compact arrangement of the plurality of joints 3 by arranging the plurality of joints 3 on the same side of the shroud 122, and further reduces the size of the micro inverter.

In one embodiment, referring to fig. 2, as a specific implementation of the micro inverter provided in the embodiment of the present application, the micro inverter further includes a mounting bracket 4 mounted on the housing 1. According to the structure, the micro inverter can be installed and fixed on the wall body through the installing support 4, so that the micro inverter can be installed and fixed conveniently.

In one embodiment, referring to fig. 4, as a specific implementation of the micro inverter provided in the embodiment of the present application, the mounting bracket 4 includes a first bracket 41 and a second bracket 42 mounted on the housing 1, and the second bracket 42 is connected to the first bracket 41. In this structure, the first bracket 41 is used for connecting with the housing 1, and the second bracket 42 is used for connecting with the wall, thereby realizing the installation and fixation of the micro-inverter on the wall.

In an embodiment, referring to fig. 5 to 7, as a specific implementation manner of the micro inverter provided by the embodiment of the present application, the first bracket 41 includes a first mounting plate 411, a second mounting plate 412 disposed parallel to the first mounting plate 411 at intervals, and a connecting plate 413 connecting the first mounting plate 411 and the second mounting plate 412, two ends of the first mounting plate 411 are respectively provided with a first mounting hole 4130, a mounting guide post 123 is mounted on the housing 1 at a position corresponding to each first mounting hole 4130, and each first mounting hole 4130 and the corresponding mounting guide post 123 can be connected by a fastener such as a screw. The second bracket 42 includes a base plate 421 mounted on the second mounting plate 412, extension plates 422 extending from both ends of the base plate 421 in a direction away from the first mounting plate 411, and a fixing plate 423 extending from one end of each extension plate 422 in a direction away from the base plate 421; each of the fixing plates 423 is disposed in parallel with the first mounting plate 411 at an interval, and each of the fixing plates 423 is provided with a second mounting hole 4230. Alternatively, the substrate 421 and the second mounting plate 412 may be connected by welding, adhesive, or the like. In this structure, the connection of the first bracket 41 and the housing 1 can be achieved through the two first mounting holes 4130 on the first mounting plate 411; connection to the wall is achieved through two second mounting holes 4230 on two fixing plates 423.

In one embodiment, referring to fig. 5 and 6, as a specific implementation of the micro inverter provided in the embodiment of the present application, the first mounting plate 411, the second mounting plate 412 and the connection plate 413 are integrally formed; the base plate 421, the two extension plates 422, and the two fixing plates 423 are integrally formed. With this structure, the first bracket 41 and the second bracket 42 formed integrally have excellent mechanical properties, and are easy to manufacture.

The above description is illustrative of the various embodiments of the application and is not intended to be limiting, but is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application.

Claims

1. A micro-inverter, comprising:

The control main board is arranged in the accommodating cavity;

2. The micro-inverter of claim 1, wherein: the shell comprises a lower shell and an upper cover connected with the lower shell, and the lower shell and the upper cover are enclosed to form the accommodating cavity; the lower shell comprises a bottom plate and a coaming plate formed by extending the edge of the bottom plate towards the same side; the radiating fins are arranged on the side surface of the bottom plate facing the accommodating chamber, and the radiating fins are arranged on the side surface of the bottom plate facing away from the accommodating chamber; the joints are respectively arranged on the coaming.

3. The micro-inverter of claim 2, wherein: the upper cover is provided with a through hole communicated with the accommodating cavity, an indicator lamp is arranged in the through hole, and the indicator lamp is electrically connected with the control main board.

4. A micro-inverter as claimed in claim 3, wherein: the shell also comprises a lens covered on the indicator lamp.

5. The micro-inverter of claim 4, wherein: the upper cover is provided with a mounting groove, and the lens is mounted in the mounting groove; the through hole is formed in the bottom surface of the mounting groove.

6. The micro-inverter of claim 2, wherein: the lower shell is of a square structure, and the joints are arranged on the same side of the coaming.

7. The micro-inverter of any one of claims 1-6, wherein: the micro inverter further comprises a mounting bracket mounted on the housing.

8. The micro-inverter of claim 7, wherein: the mounting bracket comprises a first bracket mounted on the shell and a second bracket connected with the first bracket.

9. The micro-inverter of claim 8, wherein: the first bracket comprises a first mounting plate, a second mounting plate and a connecting plate, wherein the second mounting plate is arranged in parallel with the first mounting plate at intervals, the connecting plate is used for connecting the first mounting plate and the second mounting plate, first mounting holes are respectively formed in two ends of the first mounting plate, and mounting guide posts are arranged at positions, corresponding to the first mounting holes, on the shell; the second bracket comprises a base plate arranged on the second mounting plate, extension plates extending from two ends of the base plate in a direction away from the first mounting plate, and fixing plates extending from one end of each extension plate in a direction away from the base plate; each fixed plate is arranged in parallel with the first mounting plate at intervals, and each fixed plate is provided with a second mounting hole.

10. The micro-inverter of claim 9, wherein: the first mounting plate, the second mounting plate and the connecting plate are integrally formed; the base plate, the two extension plates and the two fixing plates are integrally formed.