CN220732716U

CN220732716U - Photovoltaic combiner box

Info

Publication number: CN220732716U
Application number: CN202322321858.5U
Authority: CN
Inventors: 王佳豪; 韩俏; 韦增力
Original assignee: Guangxi Huagan Electric Power Equipment Co ltd
Current assignee: Guangxi Huagan Electric Power Equipment Co ltd
Priority date: 2023-08-28
Filing date: 2023-08-28
Publication date: 2024-04-05
Anticipated expiration: 2033-08-28

Abstract

The application proposes a photovoltaic combiner box, include: a door; the box door is connected with the box body through a hinge; an outer backboard and an inner backboard are arranged in the box body, an interlayer is arranged between the outer backboard and the inner backboard, fans are arranged on two sides of the box body, through holes are formed in the positions of the fans, and the fans are communicated with the interlayer through the through holes; the lower part of the inner backboard is provided with a first air outlet; the interlayer is internally provided with a first baffle and a second baffle. The application utilizes outer backplate and interior backplate to constitute the intermediate layer in the box, and the air that the fan sent reentrant box inner chamber is in after the intermediate layer, utilizes third baffle and movable partition to reduce the drop that smuggles in the air, avoids too much water droplet of air to lead to the risk that incasement equipment was soaked when rainy day, secondly utilizes activity to separate the unidirectional flow of control air for two fans can start simultaneously, perhaps start alone, and the fan backs up each other, improves cooling system's reliability.

Description

Photovoltaic combiner box

Technical Field

The application relates to the technical field of distribution boxes, in particular to a photovoltaic combiner box.

Background

In order to reduce the connection line between the solar panel array and the inverter in the photovoltaic power generation system, the adjacent solar panels are generally connected into a photovoltaic combiner box in parallel, and after the solar panels are combined in the photovoltaic combiner box, the solar panels are output through a direct current breaker and are matched with the photovoltaic inverter to form a complete photovoltaic power generation system, so that grid connection with the mains supply is realized. In order to shorten the connection line, the photovoltaic junction box is basically installed on a photovoltaic frame in the near open air, the temperature in the box body is high in summer, the temperature in the box body is increased after the solar panel is exposed to the sun, electric energy generated by the solar panel is collected into the box body, the temperature in the box body is further increased, and in order to be dispersed, a fan is designed for the box body to dissipate heat, for example, a box body is disclosed in China patent with the application number 202223034333.5, and comprises a box body, the box body comprises a shell and a cover body, the cover body is hinged on the shell body, and a first heat dissipation part and a second heat dissipation part are respectively arranged on two opposite side walls of the shell body; the first heat dissipation part and the second heat dissipation part are of symmetrical C-shaped structures, the first heat dissipation part and the second heat dissipation part are of thin-wall tubular structures, and two ends of the first heat dissipation part and the second heat dissipation part are communicated with the inside of the shell; the shell is internally provided with a main board, and the main board is provided with a fan which is arranged towards one port of the first heat dissipation part or the second heat dissipation part; the fan rotates to drive air in the shell to form circulating air flow through the first radiating part and/or the second radiating part, so that heat is radiated from the surfaces of the first radiating part and the second radiating part. When the traditional fan dissipates heat and rains, the fan is easy to absorb small water drops, so that the inside of the box is easy to cause the situation that the equipment is soaked, and therefore, a photovoltaic converging box is needed, the small water drops in the sucked air can be reduced through reasonable air path design, the safety of the equipment in the box is ensured, two fans are designed, and the efficient heat dissipation is realized through the mutual cooperation of the two fans.

Disclosure of Invention

In order to solve the problem, the application provides a photovoltaic collection flow box, and its inside can reduce the droplet in the suction air through reasonable wind path design to guarantee the safety of incasement equipment to design two fans, through the mutually supporting of two fans, realize high-efficient heat dissipation.

The application is realized by the following technical scheme:

the application proposes a photovoltaic combiner box, include:

a door;

the box door is connected with the box body through a hinge;

an outer backboard and an inner backboard are arranged in the box body, an interlayer is arranged between the outer backboard and the inner backboard, fans are arranged on two sides of the box body, through holes are formed in the positions of the fans, and the fans are communicated with the interlayer through the through holes;

the lower part of the inner backboard is provided with a first air outlet;

be equipped with first baffle and second baffle in the intermediate layer, the intermediate layer passes through first baffle with two U type wind channels are separated into to the second baffle, U type wind channel one end with the fan intercommunication, the other end with first air outlet intercommunication.

Further, the fan outside is equipped with the fan cover, the fan cover is installed in the box both sides along vertical direction, and the fan is installed in the fan cover, fan cover lower part and side all are equipped with the opening, the opening of fan cover side with the intermediate layer intercommunication.

Further, the first partition board is arranged in the middle of the interlayer, the second partition board is arranged on two sides of the first partition board, an opening is arranged between the upper end of the second partition board and the inner wall of the box body, and the first air outlet is arranged at the lower end of the first partition board.

Further, a third partition plate is arranged between the second partition plate and the inner wall of the box body, an opening is formed in the middle of the third partition plate, a movable partition plate is arranged above the opening, and one side of the movable partition plate is connected with the third partition plate through a hinge.

Further, the movable partition plate can rotate around the hinge, and when the movable partition plate is horizontal, the movable partition plate covers the opening.

Further, the upper part of the box body is provided with a rain shielding part which is communicated with the inner cavity of the box body.

Further, the inner cavity of the rain shielding part is communicated with the inner cavity of the box body, the upper part of the rain shielding part is provided with a herringbone rain shielding plate, and the lower part of the rain shielding part is provided with a second air outlet.

Further, the two U-shaped air channels are communicated with the first air outlet.

Further, the through hole is at a distance of 5cm to 10cm from the bottom of the interlayer.

Further, a door lock is arranged on the box door.

The beneficial effects of this application: the interlayer is formed by the outer backboard and the inner backboard in the box body, air sent by the fans enters the inner cavity of the box body after passing through the interlayer, water drops carried in the air are reduced by the third partition board and the movable partition board, the risk that equipment in the box is soaked due to too many water drops of the air is avoided in rainy days, and secondly, the unidirectional flow of the air is controlled by the movable partition board, so that the two fans can be started simultaneously or independently, the fans are backed up mutually, and the reliability of a heat dissipation system is improved.

Drawings

FIG. 1 is a schematic view of the front face of the present utility model;

FIG. 2 is a schematic view of the structure of the back surface of the present utility model;

FIG. 3 is a schematic view of the structure of the interlayer of the present utility model;

FIG. 4 is a cross-sectional view of the fan housing position of the present utility model;

FIG. 5 is a schematic view of a rain shield according to the present utility model;

the reference numerals in the drawings are as follows:

1-box door, 2-box, 101-door lock, 201-outer backplate, 202-inner backplate, 203-interlayer, 204-fan, 205-first air outlet, 206-first baffle, 207-second baffle, 208-third baffle, 209-movable baffle, 210-rain shield, 211-rain shield, 212-second air outlet, 213-fan housing.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicators are correspondingly changed.

Furthermore, the descriptions of "first," "second," and the like, herein are 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 at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

As shown in fig. 1 to 5, an embodiment of the present utility model provides a photovoltaic junction box, including: a box door 1; the box body 2, the box door 1 is connected with the box body 2 through a hinge; wherein, an outer backboard 201 and an inner backboard 202 are arranged in the box body 2, an interlayer 203 is arranged between the outer backboard 201 and the inner backboard 202, fans 204 are arranged on two sides of the box body 2, through holes are arranged at the positions of the fans 204, and the fans 204 are communicated with the interlayer 203 through the through holes; the lower part of the inner backboard 202 is provided with a first air outlet 205; the interlayer 203 is internally provided with a first baffle 206 and a second baffle 207, the interlayer 203 is divided into two U-shaped air channels by the first baffle 206 and the second baffle 207, one end of each U-shaped air channel is communicated with the fan 204, and the other end of each U-shaped air channel is communicated with the first air outlet 205.

The direct current lightning protection module, direct current fuse, equipment such as circuit breaker that photovoltaic converged to used is installed on the backplate to the orderly setting of equipment, after closing chamber door 1, forms a relatively airtight space in the box, can produce heat when the consumer in the box 2 moves, also can lead to the temperature rise in the box 2 when outdoor sun insolate simultaneously, at this moment, start fan 204, after fan 204 inhales the air from fan housing 213 lower part, send into intermediate layer 203, intermediate layer 203 separates into two U type wind channels through first baffle 206 and second baffle 207, the air of sending into enters into the inner chamber of box 2 from first air outlet 205 after the U type wind channel, make the hot air in the box 2 follow the second air outlet 212 discharge, reach the purpose of cooling.

The path is longer in the U type wind channel, the water droplet is easy to strike on the inner wall when the air flows to gather into big water droplet on the inner wall in U type wind channel and flow downwards, thereby reach the effect of reducing the water droplet in the air, secondly be equipped with third baffle 208 and movable baffle 209 in the U type wind channel, the air can strike on movable baffle 209 when flowing through movable baffle 209, the water droplet is because surface tension adheres to on movable baffle 209, and gather into behind the big water droplet, the whereabouts returns U type wind channel lower part, thereby further reduce the moisture content in the air, avoid the too much water droplet of air to lead to the risk that the equipment in the case is soaked.

Second, when the outer backplate 201 is exposed to the sun, the interlayer 203 may serve as a heat insulating layer, reducing heat transfer into the interior of the housing 2.

Specifically, fan 204 outside is equipped with fan housing 213, and fan housing 213 installs in box 2 both sides along vertical direction, and fan 204 installs in fan housing 213, and fan housing 213 lower part and side all are equipped with the opening, and the opening and the intermediate layer 203 intercommunication of fan housing 213 side, fan 204 are from fan housing 213 below suction air, can avoid the rainwater directly to get into in the fan in rainy day, reduce the content of water droplet in the air.

In a preferred embodiment, as shown in fig. 3, the first partition 206 is disposed in the middle of the interlayer 203, the second partition 207 is disposed on two sides of the first partition 206, an opening is disposed between the upper end of the second partition 207 and the inner wall of the box 2, and the first air outlet 205 is disposed at the lower end of the first partition 206, and a U-shaped air channel is separated by the partition, so that the air flowing path is prolonged, and the content of water drops in the air is reduced.

In a preferred embodiment, as shown in fig. 4, a third partition 208 is disposed between the second partition 207 and the inner wall of the box 2, an opening is disposed in the middle of the third partition 208, a movable partition 209 is disposed above the opening, one side of the movable partition 209 is connected with the third partition 208 through a hinge, when air flows through the movable partition 209, the air will impinge on the movable partition 209, and small water drops adhere to the movable partition 209 due to surface tension and drop back to the lower part of the U-shaped air duct after being gathered into large water drops, thereby further reducing the moisture content in the air and avoiding the risk that the equipment in the box is wetted due to excessive water drops in the air.

In a preferred embodiment, the movable partition 209 can rotate around the hinge, and when the movable partition 209 is horizontal, the movable partition 209 covers the opening, and the movable partition 209 can play a role of a one-way valve, when one fan 204 fails, the other fan works independently, the movable partition 209 can block the air from the third partition 208 to leave the through hole on the other side, so that the two fans can work simultaneously, can work independently and back up each other, and the reliability of the heat dissipation system is improved.

Preferably, the upper portion of the case 2 is provided with a rain shielding portion 210, and the rain shielding portion 210 communicates with the inner cavity of the case 2 so that hot air can be discharged from the upper portion of the case 2 and rainwater is prevented from flowing backward into the case 2.

Preferably, as shown in fig. 5, the inner cavity of the rain shielding part 210 is communicated with the inner cavity of the box 2, a herringbone rain shielding plate 211 is arranged at the upper part of the rain shielding part 210, a second air outlet 212 is arranged below the rain shielding plate 211 of the rain shielding part 210, the rain shielding plate 211 can prevent rainwater from directly falling into the box 2, the electricity safety of equipment in the box is ensured, and the second air outlet 212 is used for discharging hot air.

Specifically, the two U-shaped air channels are both communicated with the first air outlet 205, so that the two fans can work simultaneously and independently, and the reliability of the heat dissipation system is improved.

In a preferred embodiment, the through holes are spaced from the bottom of the interlayer 203 by a distance of 5cm to 10cm, so that there is a little space in the lower part of the interlayer 203 for storing the water drops dripping, which naturally evaporate after a rain stop.

Preferably, the door 1 is provided with a door lock 101 to prevent others from opening the door 1 when they are not allowed.

In a preferred embodiment, a limiting rod is arranged above the movable partition 209, so that the situation that the movable partition 209 cannot be reset due to the overlarge rotation angle can be prevented.

Of course, there are various other embodiments of the present application, and based on this embodiment, those of ordinary skill in the art may obtain other embodiments without any inventive effort, which fall within the scope of protection of the present application.

Claims

1. A photovoltaic combiner box, comprising:

a box door (1);

the box body (2), the box door (1) is connected with the box body (2) through a hinge;

an outer backboard (201) and an inner backboard (202) are arranged in the box body (2), an interlayer (203) is arranged between the outer backboard (201) and the inner backboard (202), fans (204) are arranged on two sides of the box body (2), through holes are formed in the positions of the fans (204), and the fans (204) are communicated with the interlayer (203) through the through holes;

a first air outlet (205) is formed in the lower part of the inner backboard (202);

be equipped with first baffle (206) and second baffle (207) in intermediate layer (203), intermediate layer (203) are through first baffle (206) with two U type wind channel are separated into to second baffle (207), U type wind channel one end with fan (204) intercommunication, the other end with first air outlet (205) intercommunication.

2. The photovoltaic combiner box according to claim 1, wherein a fan cover (213) is arranged on the outer side of the fan (204), the fan cover (213) is arranged on two sides of the box body (2) along the vertical direction, the fan (204) is arranged in the fan cover (213), openings are formed in the lower portion and the side face of the fan cover (213), and the openings in the side face of the fan cover (213) are communicated with the interlayer (203).

3. The photovoltaic combiner box according to claim 1, wherein the first partition plate (206) is disposed in the middle of the interlayer (203), the second partition plate (207) is disposed on two sides of the first partition plate (206), an opening is disposed between an upper end of the second partition plate (207) and an inner wall of the box body (2), and the first air outlet (205) is disposed at a lower end of the first partition plate (206).

4. The photovoltaic combiner box according to claim 1, wherein a third partition plate (208) is arranged between the second partition plate (207) and the inner wall of the box body (2), an opening is arranged in the middle of the third partition plate (208), a movable partition plate (209) is arranged above the opening, and one side of the movable partition plate (209) is connected with the third partition plate (208) through a hinge.

5. The photovoltaic combiner box according to claim 4, wherein the movable partition (209) is rotatable about a hinge, and wherein the movable partition (209) covers the opening when the movable partition (209) is horizontal.

6. The photovoltaic combiner box according to claim 1, wherein the upper part of the box body (2) is provided with a rain shielding part (210), and the rain shielding part (210) is communicated with the inner cavity of the box body (2).

7. The photovoltaic combiner box according to claim 6, wherein the inner cavity of the rain shielding part (210) is communicated with the inner cavity of the box body (2), the upper part of the rain shielding part (210) is provided with a herringbone rain shielding plate (211), and the rain shielding part (210) is provided with a second air outlet (212) below the rain shielding plate (211).

8. A photovoltaic combiner box according to claim 1, wherein both U-shaped air channels are in communication with the first air outlet (205).

9. A photovoltaic combiner box according to claim 1, characterized in that the through-hole is at a distance of 5cm to 10cm from the bottom of the interlayer (203).

10. A photovoltaic combiner box according to claim 1, characterized in that the door (1) is provided with a door lock (101).