Photovoltaic micro inverter

Abstract

The utility model discloses a photovoltaic micro inverter, and particularly relates to the technical field of inverters, which comprises a bottom plate, a connecting plate is mounted at the top end of the bottom plate, a groove is arranged in the middle of the side wall of the connecting plate, and a shell is mounted on one side of the bottom plate; connecting structures are mounted on the two sides of the shell correspondingly, and each connecting structure comprises a mounting block, a nut, a base plate and a threaded block. The installation block is installed on one side of the wire, the installation block and the shell form a clamping structure, the installation block on one side of the wire can be clamped into the shell, the threaded block on the installation block and the nut form threaded connection, the threaded block can be extruded by screwing the nut, the threaded block is pressed tightly, and the nut can be fixed more stably through the base plate. The lead and the plug can be fixed through cooperation of the threaded block and the mounting block, and the plug can be replaced by unscrewing the nut when replacement is needed, so that the purpose that the plug of the photovoltaic micro inverter is convenient to replace and fix is achieved.

Description

Technical Field

[0001] The utility model relates to the field of inverters, in particular to a photovoltaic micro inverter. Background Art

[0002] An inverter converts DC power into constant-frequency, constant-voltage, or frequency-modulated, voltage-regulated AC power. It consists of an inverter bridge, control logic, and filtering circuits. It is widely used in air conditioners, home theaters, electric grinding wheels, power tools, sewing machines, DVDs, VCDs, computers, televisions, washing machines, range hoods, refrigerators, VCRs, massagers, fans, and lighting. Photovoltaic power generation systems, or PV for short, utilize the photovoltaic effect of photovoltaic cells to directly convert solar radiation into electrical energy. This requires a photovoltaic microinverter.

[0003] To this end, the patent specification with publication number CN220653192U discloses the technical field of balcony photovoltaic micro-inverter devices, specifically a balcony photovoltaic micro-inverter comprising a micro-inverter body, a cast aluminum housing, an aluminum alloy cover, mounting holes, housing grounding holes, mounting screw slots, sealing screws, an operating indicator light, a first AC output, a first PV input, a second AC output, a second PV input, a WiFi antenna, and a WiFi connection button. The patent utilizes the cast aluminum housing and aluminum alloy cover to protect the micro-inverter body from damage caused by external impacts. Sealing screws penetrate the mounting screw slots to thread the cast aluminum housing and aluminum alloy cover together, facilitating installation and removal. The mounting holes facilitate wall mounting of the aluminum alloy cover, facilitating securement of the balcony photovoltaic micro-inverter. An operating indicator light displays the operating status of the device. The WiFi antenna is used to receive WiFi signals, and the WiFi connection button facilitates networking operations, making it easy to operate and adjust.

[0004] Although today's photovoltaic microinverters can basically meet people's needs, there are still some problems. The specific problems are as follows:

[0005] 1. The problem of difficulty in replacing and fixing the plug of the photovoltaic micro inverter. When connecting different devices, different types of plugs may be required, and the plugs need to be replaced for use.

[0006] 2. The photovoltaic micro-inverter has difficulty in dissipating heat. When the inverter is working, it will generate a lot of heat, which is difficult to dissipate and will affect the operation of the inverter. Utility Model Content

[0007] The purpose of the utility model is to provide a photovoltaic micro-inverter to solve the defects of the existing photovoltaic micro-inverter that it is difficult to replace and fix the plug and difficult to dissipate heat.

[0008] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a photovoltaic micro-inverter, comprising:

[0009] A bottom plate, a connecting plate is installed on the top of the bottom plate, a groove is provided in the middle of the side wall of the connecting plate, and a shell is installed on one side of the bottom plate;

[0010] A connecting structure is installed on both sides of the shell, and the connecting structure includes a mounting block, a nut, a pad and a threaded block. The pad is installed on the side wall of the shell, the mounting block is provided on one side of the pad, the threaded block is provided at one end of the mounting block, and the nut is screwed and connected to the threaded block.

[0011] Both ends of the connecting plate are equipped with disassembly and assembly structures, one end of the connecting structure is connected to a wire, one end of the wire is equipped with a plug, and the side wall of the shell is provided with a heat dissipation structure.

[0012] Preferably, both sides of the base plate are movably connected with mounting screws, and the mounting screws are symmetrically distributed about the central axis of the base plate.

[0013] Preferably, the disassembly and assembly structure includes a track, a fixing screw and a mounting slot, the track is opened at the top end of the connecting plate, the mounting slot is arranged at the bottom end of the track, and the fixing screw is arranged at one end of the mounting slot.

[0014] Preferably, the fixing screw is threadedly connected to the mounting slot;

[0015] Wherein, the outer side of the fixing screw is provided with an upper external thread, and the inner side of the mounting groove is provided with an internal thread matching the external thread.

[0016] Preferably, the heat dissipation structure includes multiple groups of first heat dissipation fins, second heat dissipation fins and third heat dissipation fins, the first heat dissipation fins are evenly arranged at the four ends of the outer side of the shell, and the second heat dissipation fins are arranged on the side of the outer wall of the shell relative to the bottom plate.

[0017] Preferably, the third heat sinks are arranged at equal intervals at both ends of the outer wall of the housing, and both ends of the third heat sink are connected to the inner side of the second heat sink.

[0018] Preferably, a card slot is provided on one side of the mounting block, a card block is provided on one side of the shell, and the mounting block and the shell form a card-fitting structure.

[0019] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0020] By installing a mounting block on one side of the wire, the mounting block and the shell form a snap-fit ​​structure, so that the mounting block on the wire side can be stuck into the shell. The threaded block and the nut on the mounting block form a threaded connection. Tightening the nut will squeeze the threaded block, making the threaded block compact. The pad can make the nut more stable. The threaded block and the mounting block can work together to fix the wire and the plug. When replacement is needed, the nut can be unscrewed to replace the plug, thereby achieving the purpose of facilitating the replacement and fixation of the plug of the photovoltaic micro inverter.

[0021] By setting a heat dissipation structure outside the shell, the first heat sink, the second heat sink and the third heat sink on the heat dissipation structure are arranged at equal intervals. The heat sink can be made of a material with good thermal conductivity, such as brass. The first heat sink, the second heat sink and the third heat sink have a large surface area and can absorb the heat of the shell. Then, due to the large surface area of ​​the heat sink, the heat can be quickly dissipated, thereby achieving the purpose of facilitating heat dissipation of the photovoltaic micro inverter. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 It is a front view of the utility model;

[0025] Figure 3 For this utility model Figure 2 Enlarged view of part A in the middle;

[0026] Figure 4 It is a side view of the utility model;

[0027] Figure 5 This is a structural diagram of the connecting plate of the utility model.

[0028] Description of reference numerals:

[0029] 1. Base plate; 2. Housing; 3. Connecting plate; 4. Groove; 5. Disassembly and assembly structure; 501. Track; 502. Fixing screw; 503. Mounting slot; 6. Heat dissipation structure; 601. First heat sink; 602. Second heat sink; 603. Third heat sink; 7. Plug; 8. Wire; 9. Connecting structure; 901. Mounting block; 902. Nut; 903. Pad; 904. Threaded block; 10. Mounting screw. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] The utility model provides Figure 1-Figure 5 A photovoltaic micro-inverter is shown, comprising:

[0032] A bottom plate 1 is provided with a connecting plate 3 at the top end of the bottom plate 1, a groove 4 is provided in the middle of the side wall of the connecting plate 3, and a housing 2 is provided on one side of the bottom plate 1;

[0033] Both sides of the base plate 1 are movably connected with mounting screws 10, and the mounting screws 10 are symmetrically distributed about the central axis of the base plate 1;

[0034] A connection structure 9 is installed on both sides of the housing 2, and the connection structure 9 includes a mounting block 901, a nut 902, a pad 903 and a threaded block 904. The pad 903 is installed on the side wall of the housing 2, the mounting block 901 is provided on one side of the pad 903, the threaded block 904 is provided at one end of the mounting block 901, and the nut 902 is screwed and connected to the threaded block 904;

[0035] A card slot is provided on one side of the mounting block 901 , and a card block is provided on one side of the housing 2 . The mounting block 901 and the housing 2 form a card engagement structure.

[0036] Specifically by Figure 2-Figure 3 As shown, the mounting block 901 and the housing 2 form a snap-fit ​​structure, and the mounting block 901 on one side of the wire 8 can be snapped into the interior of the housing 2. The threaded block 904 and the nut 902 on the mounting block 901 form a threaded connection. Tightening the nut 902 will squeeze the threaded block 904, making the threaded block 904 pressed tightly. The pad 903 can make the nut 902 more stable. The threaded block 904 and the mounting block 901 can work together to fix the wire 8 and the plug 7. When replacement is needed, unscrew the nut 902 and the plug 7 can be replaced.

[0037] Both ends of the connecting plate 3 are equipped with a disassembly structure 5, which includes a track 501, a fixing screw 502 and a mounting slot 503. The track 501 is provided at the top of the connecting plate 3, the mounting slot 503 is provided at the bottom of the track 501, and the fixing screw 502 is provided at one end of the mounting slot 503.

[0038] The fixing screw 502 is threadedly connected to the mounting slot 503;

[0039] The outer side of the fixing screw 502 is provided with an upper external thread, and the inner side of the mounting groove 503 is provided with an internal thread matching the external thread.

[0040] Specifically by Figure 1 、 Figure 2and Figure 5 As shown, the fixing screw 502 can be installed through the track 501, and the fixing screw 502 can slide into the installation groove 503 along the track 501. The fixing screw 502 can be moved inside the installation groove 503. The inverter can be fixed and installed by the fixing screw 502. Since the fixing screw 502 can also move inside the installation groove 503, the device installation is more diversified.

[0041] One end of the connecting structure 9 is connected to a wire 8, one end of the wire 8 is installed with a plug 7, and the side wall of the housing 2 is provided with a heat dissipation structure 6;

[0042] The heat dissipation structure 6 includes multiple groups of first heat dissipation fins 601, second heat dissipation fins 602 and third heat dissipation fins 603. The first heat dissipation fins 601 are evenly arranged at the four ends of the outer side of the housing 2, and the second heat dissipation fins 602 are arranged on the side of the outer wall of the housing 2 opposite to the bottom plate 1;

[0043] The third heat sinks 603 are arranged at equal intervals at both ends of the outer wall of the housing 2 , and both ends of the third heat sinks 603 are connected to the inner sides of the second heat sinks 602 .

[0044] Specifically by Figure 1-Figure 2 As shown, the first heat sink 601, the second heat sink 602 and the third heat sink 603 are arranged at equal intervals. The heat sinks are made of a material with good thermal conductivity, such as brass. The first heat sink 601, the second heat sink 602 and the third heat sink 603 have a large surface area and can absorb the heat of the housing 2. Then, due to the large surface area of ​​the heat sink, the heat can be quickly dissipated.

[0045] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A photovoltaic micro-inverter, characterized in that: include: A bottom plate (1), a connecting plate (3) is installed at the top end of the bottom plate (1), a groove (4) is provided in the middle of the side wall of the connecting plate (3), and a housing (2) is installed on one side of the bottom plate (1); Both sides of the housing (2) are equipped with a connection structure (9), and the connection structure (9) includes a mounting block (901), a nut (902), a pad (903) and a threaded block (904), wherein the pad (903) is mounted on a side wall of the housing (2), the mounting block (901) is arranged on one side of the pad (903), the threaded block (904) is arranged at one end of the mounting block (901), and the nut (902) is screwed and connected to the threaded block (904); Both ends of the connecting plate (3) are equipped with disassembly structures (5), one end of the connecting structure (9) is connected to a wire (8), one end of the wire (8) is equipped with a plug (7), and the side wall of the housing (2) is provided with a heat dissipation structure (6).

2. The photovoltaic micro-inverter according to claim 1, characterized in that: Both sides of the base plate (1) are movably connected with mounting screws (10), and the mounting screws (10) are symmetrically distributed about the central axis of the base plate (1).

3. The photovoltaic micro-inverter according to claim 1, characterized in that: The disassembly and assembly structure (5) comprises a track (501), a fixing screw (502) and a mounting groove (503); the track (501) is provided at the top end of the connecting plate (3); the mounting groove (503) is provided at the bottom end of the track (501); and the fixing screw (502) is provided at one end of the mounting groove (503).

4. The photovoltaic micro-inverter according to claim 3, characterized in that: The fixing screw (502) is threadedly connected to the mounting slot (503); The outer side of the fixing screw (502) is provided with an upper external thread, and the inner side of the mounting groove (503) is provided with an internal thread matching the external thread.

5. The photovoltaic micro-inverter according to claim 1, characterized in that: The heat dissipation structure (6) comprises a plurality of groups of first heat dissipation fins (601), second heat dissipation fins (602) and third heat dissipation fins (603); the first heat dissipation fins (601) are evenly arranged at the four ends of the outer side of the housing (2); and the second heat dissipation fins (602) are arranged on the side of the outer wall of the housing (2) relative to the bottom plate (1).

6. The photovoltaic micro-inverter according to claim 5, characterized in that: The third heat sinks (603) are arranged at equal intervals at both ends of the outer wall of the housing (2), and both ends of the third heat sinks (603) are connected to the inner side of the second heat sink (602).

7. The photovoltaic micro-inverter according to claim 1, characterized in that: A card slot is provided on one side of the mounting block (901), and a card block is provided on one side of the housing (2); the mounting block (901) and the housing (2) form a card-fitting structure.

Images