CN210490741U - Micro inverter and casing thereof - Google Patents
Micro inverter and casing thereof Download PDFInfo
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- CN210490741U CN210490741U CN201922055713.9U CN201922055713U CN210490741U CN 210490741 U CN210490741 U CN 210490741U CN 201922055713 U CN201922055713 U CN 201922055713U CN 210490741 U CN210490741 U CN 210490741U
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Abstract
The utility model discloses a micro inverter and casing thereof, the casing mainly includes plastics drain pan and metal covering, metal covering detains on the plastics drain pan and makes both form a box body that can hold the PCB board and install electronic components on the PCB board, during the micro inverter equipment, the PCB board of micro inverter is fixed on metal covering, utilize metal covering to realize heat dissipation and ground connection, the concave-convex structure that matches with electronic components on the PCB board can be made to the plastics drain pan, can reduce the encapsulating quantity, alleviate the weight and the reduce cost of dc-to-ac converter, can fix on the installation base through the plastics drain pan after the micro inverter equipment is accomplished in addition, and through the integrated backplate at the subassembly of installation base, the installation is simple and convenient.
Description
Technical Field
The utility model relates to an inverter technical field especially relates to a micro-inverter's casing. Furthermore, the utility model discloses still relate to a micro-inverter including above-mentioned casing.
Background
The inverter is a converter for converting direct current electric energy into constant frequency, constant voltage or frequency and voltage regulation alternating current, and the micro inverter generally refers to an inverter with the power of less than or equal to 1000 watts and module level MPPT in a photovoltaic power generation system.
The casing of micro-inverter among the prior art has two kinds, one kind is the all-metal box body, as shown in figure 1, the advantage can realize heat dissipation and EMC shielding, can do ground connection, nevertheless because micro-inverter has high devices such as transformer, electrolytic capacitor, ann rule electric capacity for the box body is very thick, and to smooth box body, the encapsulating quantity is very big if whole encapsulating, and leads to box body weight big, and is with high costs, and metal casing is difficult to make the structure that can integrate in the installation of subassembly backplate in addition.
The other type is the all-plastic casing, as shown in fig. 2, the amount of the internal potting adhesive can be reduced by manufacturing the concave-convex shape, the weight is small, the cost is low, the buckle is easy to design and is installed on the installation base, the plastic installation base can be directly adhered to the back plate of the assembly, but the all-plastic casing can cause the heat to be unable to be dissipated, the power of the micro inverter is reduced, in order to dissipate the heat of the local high-temperature device, a metal cooling fin needs to be additionally installed inside the casing, meanwhile, the metal installation plate needs to be installed outside the plastic casing in order to be installed on a photovoltaic system support, the heat dissipation is also performed outside by adopting the installation frame, the. In addition, the plastic shell can not utilize the ground wire in the alternating current cable to carry out system grounding, and special circuit and software design are needed to realize the GFDI (ground fault protection) function according to the safety requirements of the inverter.
Therefore, the micro inverter with small glue filling amount, good heat dissipation and simple process is provided, and the technical problem to be solved by the technical personnel in the field is solved at present.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a micro-inverter's casing, it is formed by plastics drain pan and metal covering plate equipment, can reduce the encapsulating quantity, alleviates the weight and the reduce cost of dc-to-ac converter, can realize heat dissipation and ground connection through metal covering plate simultaneously. Another object of the present invention is to provide a micro-inverter including a housing.
In order to solve the technical problem, the utility model provides a micro-inverter's casing, including being used for fixing the plastics drain pan on the installation base and being used for the metal covering of fixed PCB board, the plastics drain pan have with the unsmooth cavity that electronic components matees on the PCB board, the metal covering with plastics drain pan lock links to each other and forms and can hold the PCB board with electronic components's box body.
Preferably, the metal cover plate is provided with a metal fixing column on the inner side, the PCB is fixed on the fixing column through a screw, and the fixing column is communicated with a bonding pad of the PCB.
Preferably, the metal cover plate is provided with an interface for mounting a direct current connector, an alternating current cable, an antenna and a display lamp.
Preferably, one side of metal covering plate is equipped with to the mounting panel that the plastics drain pan direction was buckled, be equipped with on the plastics drain pan with the recess that the mounting panel matches, direct current connects the alternating current cable the antenna with the interface of display lamp all establishes on the mounting panel.
Preferably, the ground wire in the alternating current cable is connected with the fixed stud screw.
Preferably, the metal cover plate is in screw connection with the plastic bottom case.
Preferably, the plastic bottom shell is provided with a glue filling hole for filling glue into the box body, and the plastic bottom shell further comprises a patch for plugging the glue filling hole.
Preferably, the plastic bottom shell is fixed with the mounting base in a buckling manner, and two elastic pieces are symmetrically arranged on the bottom surface of the plastic bottom shell facing the mounting base.
Preferably, the metal cover plate is provided with a mounting hole for connecting with the photovoltaic bracket.
The utility model also provides a micro inverter, including above-mentioned arbitrary one the casing.
The utility model provides a micro-inverter's casing, including the metal covering that is used for fixing the plastics drain pan on the installation base and is used for fixed PCB board, the plastics drain pan have with PCB board on electronic components match unsmooth cavity, the metal covering links to each other with plastics drain pan lock and forms the box body that can hold PCB board and electronic components.
The PCB board of micro-inverter is fixed on metal covering, utilizes metal covering to realize heat dissipation and ground connection, and the concave-convex structure that matches with electronic components on the PCB board is made to the plastics drain pan, can reduce the encapsulating quantity, alleviates the weight and the reduce cost of dc-to-ac converter, can fix on the installation base through the plastics drain pan after the micro-inverter equipment is accomplished in addition to through the installation base integration on the backplate of subassembly, the installation is simple and convenient.
The utility model provides a micro inverter includes above-mentioned casing, because above-mentioned casing has above-mentioned technological effect, above-mentioned micro inverter also should have same technological effect, does not describe in detail here again.
Drawings
Fig. 1 is a schematic structural diagram of a micro inverter housing in the prior art;
FIG. 2 is a schematic diagram of another prior art micro-inverter housing;
fig. 3 is an exploded view of an embodiment of a case of a micro-inverter according to the present invention;
fig. 4 is a schematic structural diagram of an embodiment of a micro inverter provided in the present invention;
fig. 5 is a schematic diagram illustrating a first assembly step of the micro-inverter according to the present invention;
fig. 6 is a schematic diagram illustrating a second assembly step of the micro-inverter according to the present invention;
fig. 7 is a schematic diagram illustrating a third assembly step of the micro-inverter according to the present invention;
fig. 8 is a schematic diagram illustrating a fourth assembly step of the micro-inverter according to the present invention;
fig. 9 is a schematic diagram illustrating a fifth assembly step of the micro-inverter according to the present invention;
fig. 10 is a schematic diagram illustrating a sixth assembly step of the micro-inverter according to the present invention.
The drawings are numbered as follows:
the photovoltaic mounting structure comprises a mounting base 1, a plastic bottom shell 2, a glue pouring hole 2-1, a patch 2-2, a metal cover plate 3, a fixing column 3-1, a PCB 4, a direct current connector 5, an alternating current cable 6, an antenna 7, a display lamp 8, an elastic sheet 9 and a photovoltaic support 10.
Detailed Description
The core of the utility model is to provide a micro-inverter's casing, it is formed by plastics drain pan and metal covering plate equipment, can reduce the encapsulating quantity, alleviates the weight and the reduce cost of dc-to-ac converter, can realize heat dissipation and ground connection through metal covering plate simultaneously. Another core of the present invention is to provide a micro inverter including a housing.
In order to make the technical field better understand the solution of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings and the detailed description.
Referring to fig. 3 to 10, fig. 3 is an exploded schematic view of an embodiment of a casing of a micro inverter according to the present invention; fig. 4 is a schematic structural diagram of an embodiment of a micro inverter provided in the present invention; fig. 5 is a schematic diagram illustrating a first assembly step of the micro-inverter according to the present invention; fig. 6 is a schematic diagram illustrating a second assembly step of the micro-inverter according to the present invention; fig. 7 is a schematic diagram illustrating a third assembly step of the micro-inverter according to the present invention; fig. 8 is a schematic diagram illustrating a fourth assembly step of the micro-inverter according to the present invention; fig. 9 is a schematic diagram illustrating a fifth assembly step of the micro-inverter according to the present invention; fig. 10 is a schematic diagram illustrating a sixth assembly step of the micro-inverter according to the present invention.
The utility model discloses embodiment provides a micro inverter's casing, mainly include plastics drain pan 2 and metal covering 3, metal covering 3 detains on plastics drain pan 2 and makes both form a box body that can hold PCB board 4 and install electronic components on PCB board 4, during micro inverter equipment, micro inverter's PCB board 4 is fixed on metal covering 3, utilize metal covering 3 to realize heat dissipation and ground connection, plastics drain pan 2 can be made with the concave-convex structure that electronic components matches on PCB board 4, can reduce the encapsulating quantity, alleviate inverter's weight and reduce cost, can fix on installation base 1 through plastics drain pan 2 after micro inverter equipment is accomplished in addition, and through the integration of installation base 1 on the backplate of subassembly, the installation is simple and convenient.
On the basis of each above-mentioned embodiment, the utility model provides a casing, for making things convenient for the fixed of PCB board 4, can be equipped with metal fixed column 3-1 in 3 inboards of metal covering plate, fix PCB board 4 on fixed column 3-1 through the screw to make fixed column 3-1 and PCB board 4's pad switch on, in order to do benefit to heat dissipation and ground connection.
Further, the dc connector 5, the ac cable 6, the antenna 7, and the display lamp 8 of the micro-inverter are all mounted on the metal cover 3, and therefore, an interface for mounting the dc connector 5, the ac cable 6, the antenna 7, and the display lamp 8 is required to be provided on the metal cover 3. During assembly, the ground wire in the alternating current cable 6 can be fixed on the fixing column 3-1 through a screw, and is connected with the metal cover plate 3 through the fixing column 3-1, so that grounding is achieved.
For easy to assemble and connect, can be equipped with the mounting panel of buckling to 2 directions of plastics drain pans in metal decking 3 one side to will be used for installing direct current and connect 5, exchange cable 6, antenna 7 and display lamp 8's interface setting on the mounting panel.
Further, in order to facilitate the buckling connection of the metal cover plate 3 and the plastic bottom case 2, a groove matched with the mounting plate may be formed on the plastic bottom case 2.
Specifically, the metal cover plate 3 and the plastic bottom case 2 can be connected by screws, and the connection is simple and reliable.
Further, the utility model provides a casing is equipped with encapsulating hole 2-1 on the plastics drain pan 2, during micro-inverter equipment, detain plastics drain pan 2 on assembled metal decking 3 and PCB board 4 and with the screw fixation back, through encapsulating hole 2-1 to the encapsulating in the box body, pastes the paster 2-2 of shutoff encapsulating hole 2-1 after the encapsulating is accomplished.
When the micro inverter is installed, the plastic bottom shell 2 and the installation base 1 can be connected in a buckling manner, so that the connection is simple and convenient; in addition, two elastic sheets 9 can be symmetrically arranged on the bottom surface of the plastic bottom shell 2 facing the installation base 1, when the plastic bottom shell 2 is connected with the installation base 1, the elastic sheets 9 are compressed, and when the plastic bottom shell 2 is separated from the installation base 1, the elastic sheets 9 are bounced.
On the basis of each above-mentioned specific embodiment, in order to make micro-inverter can install on photovoltaic support 10, the utility model provides a casing, the one side of keeping away from the mounting panel on metal covering plate 3 can also be equipped with the mounting hole, after integrated on the backplate of subassembly with micro-inverter through installation base 1, with metal covering plate 3 through the screw installation that passes the mounting hole on photovoltaic support 10.
In addition to the above casing, the present invention further provides a micro inverter including the above casing, and the structure of other parts of the micro inverter is referred to the prior art and is not described herein again.
The assembly of the micro-inverter may be specifically performed according to the following steps:
installing a direct current connector 5, an alternating current cable 6, an antenna 7 and a display lamp 8 on a metal cover plate 3, then placing a PCB 4, fixing the PCB 4 on a fixed column 3-1 of the metal cover plate 3 through a screw, conducting a bonding pad on the PCB 4 with the fixed column 3-1, and connecting a ground wire in the alternating current cable with the metal cover plate 3 through the fixed column 3-1 with the screw;
after dispensing on the plastic bottom shell 2, buckling the upper cover on the plastic bottom shell 2 and fixing the upper cover by using screws; the plastic bottom shell 2 can also be buckled on the assembled metal cover plate 3 and other parts and fixed by screws;
pouring glue through a glue pouring hole 2-1 on the plastic bottom shell 2, and sticking a patch 2-2;
the elastic sheet 9 is arranged on the plastic bottom shell 2;
adhering the mounting base 1 to the assembly back plate, and then buckling the micro inverter into the mounting base 1;
the metallic cover plate 3 of the micro-inverter is connected to the photovoltaic support 10.
To sum up, the utility model provides a micro inverter adopts the casing that is formed by the equipment of plastics drain pan 2 and metal covering 3, can alleviate the weight of dc-to-ac converter, reduces the cost of dc-to-ac converter, can externally dispel the heat through metal covering 3 simultaneously, can carry out system's ground connection through alternating current cable, can realize the integration on the backplate of subassembly through plastics drain pan 2.
In the description of the present invention, it is to be understood that the terms "upper", "lower", and the like, indicate orientations or relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the designated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In addition, in the specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant part can be referred to the method part for description.
The micro inverter and the casing thereof provided by the present invention are described in detail above. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (10)
1. The utility model provides a micro-inverter's casing, its characterized in that, is including being used for fixing plastics drain pan (2) on installation base (1) and being used for metal covering (3) of fixed PCB board (4), plastics drain pan (2) have with electronic components's unsmooth cavity matches on PCB board (4), metal covering (3) with plastics drain pan (2) lock links to each other and forms and can hold PCB board (4) with electronic components's box body.
2. The chassis of the micro inverter according to claim 1, wherein a metal fixing post (3-1) is provided on an inner side of the metal cover plate (3), the PCB board (4) is fixed on the fixing post (3-1) by a screw, and the fixing post (3-1) is in conduction with a pad of the PCB board (4).
3. The micro-inverter chassis according to claim 2, wherein the metal cover (3) is provided with interfaces for mounting the dc connector (5), the ac cable (6), the antenna (7) and the display lamp (8).
4. The chassis of the micro-inverter according to claim 3, wherein a mounting plate bent toward the plastic bottom case (2) is disposed on one side of the metal cover plate (3), a groove matched with the mounting plate is disposed on the plastic bottom case (2), and the interfaces of the DC connector (5), the AC cable (6), the antenna (7) and the display lamp (8) are disposed on the mounting plate.
5. The micro-inverter chassis according to claim 3, wherein a ground wire in the AC cable (6) is screwed to the fixed post (3-1).
6. The micro-inverter chassis according to claim 1, wherein the metal cover plate (3) is screwed to the plastic bottom case (2).
7. The chassis of the micro-inverter according to claim 1, wherein the plastic bottom case (2) is provided with a glue filling hole (2-1) for filling glue into the box body, and further comprises a patch (2-2) for plugging the glue filling hole (2-1).
8. The chassis of the micro-inverter according to claim 1, wherein the plastic bottom shell (2) is fixed to the mounting base (1) by a snap fit, and two elastic pieces (9) are symmetrically arranged on the bottom surface of the plastic bottom shell (2) facing the mounting base (1).
9. The micro-inverter housing according to any one of claims 1 to 8, wherein the metal cover plate (3) is provided with a mounting hole for connecting with a photovoltaic bracket (10).
10. A micro-inverter, characterized in that it comprises a housing according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922055713.9U CN210490741U (en) | 2019-11-24 | 2019-11-24 | Micro inverter and casing thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922055713.9U CN210490741U (en) | 2019-11-24 | 2019-11-24 | Micro inverter and casing thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210490741U true CN210490741U (en) | 2020-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922055713.9U Active CN210490741U (en) | 2019-11-24 | 2019-11-24 | Micro inverter and casing thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN210490741U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112736560A (en) * | 2021-01-11 | 2021-04-30 | 泉州泉港博洋机械设计有限公司 | High-efficient dustproof sealing structure of low-voltage inverter |
-
2019
- 2019-11-24 CN CN201922055713.9U patent/CN210490741U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112736560A (en) * | 2021-01-11 | 2021-04-30 | 泉州泉港博洋机械设计有限公司 | High-efficient dustproof sealing structure of low-voltage inverter |
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Address after: 3 / F, building 1, No. 1, Asia Pacific Road (Jiaxing Science and technology city), Nanhu District, Jiaxing City, Zhejiang Province Patentee after: Yuneng Technology Co., Ltd Address before: 314050 No. 1 Asia Pacific Road, Nanhu District, Zhejiang, Jiaxing Patentee before: Zhejiang Yuneng Technology Co.,Ltd. |