CN206894520U - A kind of LCL combining inverters casing - Google Patents

Abstract

The utility model discloses a kind of LCL combining inverters casing, including solar energy rain cover, inverter fixed seat and fault trough fin, thermal insulation ceramicses plate is provided with below the solar energy rain cover middle position, fixed screw socket is provided with above the right side of the thermal insulation ceramicses plate, and lid fixing bolt is provided with below the left side of thermal insulation ceramicses plate, it is provided with waterproof glass lid below the upper lid fixing bolt；The fin on both sides makes inverter by the big rapid heat dissipation of wind area using cambered design, heat sink design sets into two section fault troughs and below sending out the hot fan afterwards, make fin by laterally longitudinal wind, accelerate radiating, and one layer of ceramic heat-insulation board is set at front panel, partial heat radiation can be blocked, reduce inverter internal heat, the top of inverter sets a solar energy rain cover, storage of solar energy energy can be absorbed in fine day to power for radiator fan, the rainy day can be that the inverter of lower section keep off the rain protection against the tide.

Description

A LCL grid-connected inverter box

technical field

The utility model belongs to the technical field of electrical equipment, in particular to an LCL grid-connected inverter box body.

Background technique

The string inverter is based on the concept of modularization. Each photovoltaic string passes through an inverter, which has maximum power peak tracking at the DC end and is connected in parallel to the grid at the AC end. Many large-scale photovoltaic power plants use string inverters Inverter, the advantage is that it is not affected by module differences and shading between strings, and at the same time reduces the mismatch between the best point of the photovoltaic module and the inverter, thereby increasing the power generation.

The original grid-connected inverter is easily affected by the outdoor weather because it is installed outdoors. In summer, when the sun shines for a long time and is close to the wall, the surface temperature of the inverter will rise rapidly, and it is not easy to Heat dissipation, and when it rains, it may get wet or the panel may get water.

Utility model content

The purpose of this utility model is to provide an LCL grid-connected inverter box to solve the problem that the original grid-connected inverter proposed in the background technology is easily affected by outdoor weather because it is installed outdoors. If the sun shines for a long time and is close to the wall, the surface temperature of the inverter will rise rapidly, and it is not easy to dissipate heat. When it rains, it may get wet or the panel may get water.

In order to achieve the above purpose, the utility model provides the following technical solutions: a LCL grid-connected inverter box, including a solar rainproof cover, an inverter fixing seat and a slotted cooling fin, the middle position of the solar rainproof cover A heat-insulating ceramic plate is provided below the heat-insulating ceramic plate, and a fixing screw is provided on the upper right side of the heat-insulating ceramic plate, and an upper cover fixing bolt is arranged on the lower left side of the heat-insulating ceramic plate, and the lower part of the upper cover fixing bolt is arranged There is a waterproof glass cover, the middle position of the waterproof glass cover is provided with an inverter display screen, an indicator light is provided above the right side of the inverter display screen, and an operation button is provided below the indicator light, so The inverter fixing seat is installed under the right side of the solar rainproof cover, and a heat dissipation fan is arranged in the middle of the inverter fixing seat. The inside of the heat dissipation fan is provided with fan blades, and the heat dissipation fan is provided with a fan blade. The blade shaft support rod, the inverter outer casing is arranged above the fan blade shaft support rod, the side cooling fin is arranged on the left side of the inverter outer casing, and the DC switch, the right side of the DC switch is provided with a DC terminal negative pole, the top of the DC terminal negative pole is provided with a DC terminal positive pole, the right side of the DC terminal positive pole is provided with a USB interface, and the right side of the USB interface is provided with a A wire inlet, a wire outlet is provided below the wire inlet, a grounding protection bolt is provided on the right side of the outlet, an AC output terminal is provided above the grounding protection bolt, and the slotted heat sink is installed on Above the heat dissipation fan, the heat dissipation fan is electrically connected with an external power supply.

Preferably, the heat-insulating ceramic plate is fixedly connected to the outer casing of the inverter through upper cover fixing bolts.

Preferably, the waterproof glass cover is sealed and connected to the inverter outer casing.

Preferably, there are five cooling fans in total, and all five cooling fans are installed under the slotted cooling fins.

Preferably, the fan blade shaft support rod is rotationally connected to the fan blade through a rotating shaft.

Compared with the prior art, the beneficial effects of the utility model are: the structure of the utility model is scientific and reasonable, and it is safe and convenient to use. Radiating fins are added around the outer casing of the original inverter. The area subject to wind blowing is large and the heat dissipation is fast. The rear heat sink is designed as two broken slots and a heat exhaust fan is installed below, so that the heat sink is blown by horizontal and vertical winds to speed up heat dissipation, and a layer of ceramic heat shield is set on the front panel. It can block part of the heat radiation and reduce the internal heat of the inverter. A solar rainproof cover is set above the inverter, which can absorb solar energy and store energy to power the cooling fan in sunny days, and can protect the inverter below from rain and moisture in rainy days.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the bottom structural representation of the utility model;

Fig. 3 is the rear view structure schematic diagram of the utility model;

In the figure: 1-fixing screw, 2-indicating light, 3-operating button, 4-inverter display, 5-waterproof glass cover, 6-fixing bolt of upper cover, 7-insulation ceramic plate, 8-solar energy Rain cover, 9-wire inlet, 10-AC output terminal, 11-grounding protection bolt, 12-wire outlet, 13-DC terminal negative pole, 14-blade shaft support rod, 15-cooling fan, 16-blade , 17-inverter fixing seat, 18-DC switch, 19-side heat sink, 20-inverter outer shell, 21-DC terminal positive pole, 22-USB interface, 23-slotted heat sink.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Fig. 1, Fig. 2 and Fig. 3, the utility model provides a kind of technical solution: comprising solar rainproof cover 8, inverter fixing seat 17 and broken groove cooling fin 23, the lower part of the middle position of solar rainproof cover 8 A heat-insulating ceramic plate 7 is provided, and a fixing screw 1 is arranged on the upper right side of the heat-insulating ceramic plate 7, and an upper cover fixing bolt 6 is arranged on the lower left side of the heat-insulating ceramic plate 7, and an upper cover fixing bolt 6 is arranged below There is a waterproof glass cover 5, the middle position of the waterproof glass cover 5 is provided with an inverter display 4, the upper right side of the inverter display 4 is provided with an indicator light 2, and the lower part of the indicator light 2 is provided with an operation button 3, Inverter fixed seat 17 is installed in the right side below of solar rainproof cover 8, and the middle position place of inverter fixed seat 17 is provided with cooling fan 15, and the inside of cooling fan 15 is provided with fan blade 16, and cooling fan 15 A fan blade shaft support rod 14 is arranged on the top, and an inverter housing 20 is arranged above the fan blade shaft support rod 14. A side cooling fin 19 is arranged on the left side of the inverter housing 20, and the inverter housing 20 A DC switch 18 is provided below the left end of the DC switch 18, a DC terminal negative pole 13 is provided on the right side of the DC switch 18, a DC terminal positive pole 21 is provided above the DC terminal negative pole 13, and a USB interface 22 is provided on the right side of the DC terminal positive pole 21. 22 is provided with a wire inlet 9 on the right side, a wire outlet 12 is arranged below the wire inlet 9, a grounding protection bolt 11 is provided on the right side of the outlet 12, and an AC output terminal 10 is provided above the grounding protection bolt 11. The slot cooling fins 23 are installed above the cooling fan 15, and the cooling fan 15 is electrically connected to an external power supply.

In this embodiment, preferably, the heat insulating ceramic plate 7 is fixedly connected to the inverter outer casing 20 through upper cover fixing bolts 6 .

In this embodiment, preferably, the waterproof glass cover 5 is sealed and connected to the inverter outer casing 20 .

In this embodiment, preferably, five cooling fans 15 are provided in total, and the five cooling fans 15 are all installed under the slotted cooling fins 23 .

In this embodiment, preferably, the fan blade shaft support rod 14 is connected to the fan blade 16 in rotation through a rotating shaft.

The USB interface 22 in the utility model can be regarded as a USB protocol converter, which converts the USB interface of the computer into a transparent parallel bus, just like the single-chip microcomputer bus.

The working principle and usage process of the utility model: After the utility model is installed, fix the inverter on the wall through the fixed screw port 1 on the inverter fixing seat 17 with bolts, and connect the DC power to the DC terminal positive pole 21 On the top, it is connected from the DC terminal negative pole 13, and the AC power is connected to the outlet port 12 from the inlet port 9, and the inverter can be operated by operating the button 3, and the solar rainproof cover 8 on the inverter outer shell 20 can absorb solar energy Provide electric power for the cooling fan 15 below to dissipate heat. A broken slot is set between the broken slot cooling fins 23 for ventilation, so that the heat between the broken slot cooling fins 23 can be dissipated faster. The heat insulating ceramic plate 7 on the front panel can Part of the heat is blocked from entering the inverter, and the waterproof glass cover 5 can protect the inverter display screen 4 from failure due to water ingress.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes may be made to these embodiments without departing from the principles and spirit of the present invention. , modification, replacement and variation, the scope of the present utility model is defined by the appended claims and their equivalents.

Claims (5)

1. An LCL grid-connected inverter box, including a solar rainproof cover (8), an inverter fixing seat (17) and a slotted cooling fin (23), characterized in that: the solar rainproof cover ( 8) A heat-insulating ceramic plate (7) is provided below the middle position, and a fixing screw (1) is provided above the right side of the heat-insulating ceramic plate (7), and the left side of the heat-insulating ceramic plate (7) An upper cover fixing bolt (6) is arranged below, a waterproof glass cover (5) is arranged under the upper cover fixing bolt (6), and an inverter display screen is arranged in the middle of the waterproof glass cover (5) (4), the upper right side of the inverter display screen (4) is provided with an indicator light (2), and the lower part of the indicator light (2) is provided with an operation button (3), and the inverter fixing seat (17) It is installed under the right side of the solar rainproof cover (8), and a heat dissipation fan (15) is arranged at the middle position of the inverter fixing seat (17), and a fan is arranged inside the heat dissipation fan (15). leaves (16), and the cooling fan (15) is provided with a fan blade shaft support rod (14), and an inverter outer casing (20) is provided above the fan blade shaft support rod (14), and the inverter A side cooling fin (19) is provided on the left side of the inverter housing (20), and a DC switch (18) is provided below the left end of the inverter housing (20), and a DC switch (18) is provided on the right side of the DC switch (18). The DC terminal negative pole (13), the DC terminal positive pole (21) is arranged above the DC terminal negative pole (13), and the right side of the DC terminal positive pole (21) is provided with a USB interface (22), and the USB interface ( 22) is provided with a wire inlet (9) on the right side, a wire outlet (12) is arranged under the wire inlet (9), and a grounding protection bolt (11) is arranged on the right side of the outlet (12) , the AC output terminal (10) is arranged above the grounding protection bolt (11), the slotted cooling fin (23) is installed above the cooling fan (15), and the cooling fan (15) is connected to the external power supply sexual connection. 2. A LCL grid-connected inverter box according to claim 1, characterized in that: the heat-insulating ceramic plate (7) and the inverter outer shell (20) are fixed by upper cover bolts ( 6) Fixed connection. 3 . The LCL grid-connected inverter box according to claim 1 , characterized in that: the waterproof glass cover ( 5 ) is sealed and connected to the inverter outer casing ( 20 ). 4 . 4. A LCL grid-connected inverter box according to claim 1, characterized in that: there are five cooling fans (15) in total, and the five cooling fans (15) are all installed in the broken slot Below the heat sink (23). 5 . The LCL grid-connected inverter box according to claim 1 , characterized in that: the fan blade shaft support rod ( 14 ) is connected to the fan blade ( 16 ) in rotation through a rotating shaft. 6 .