CN219843585U

CN219843585U - Photovoltaic junction box

Info

Publication number: CN219843585U
Application number: CN202321135826.XU
Authority: CN
Inventors: 王平; 胡晓源; 陈昆
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-05-12
Filing date: 2023-05-12
Publication date: 2023-10-17
Anticipated expiration: 2033-05-12

Abstract

The utility model discloses a photovoltaic junction box in the technical field of photovoltaic wiring, which comprises a junction box body, wherein a wiring pipeline is fixedly arranged at the lower end of the junction box body, a plugging heat dissipation mechanism and a monitoring mechanism are arranged in the junction box body, a heat dissipation bin is spliced in the junction box body, a filter screen is fixedly arranged at the front end of the heat dissipation bin, the photovoltaic junction box is provided with the plugging heat dissipation mechanism and the monitoring mechanism, the plugging heat dissipation mechanism adopts a plugging structure, and the whole heat dissipation mechanism can be conveniently connected, detached and installed with the photovoltaic junction box in a splicing manner, so that later maintenance and operation are convenient; meanwhile, the plug-in heat dissipation mechanism can better control the air flow in the junction box body, so that the air flow condition is more reasonable, and the heat dissipation effect and the safety of the whole junction box body are further improved; the monitoring mechanism can help timely monitor the state of the junction box body and adjust the junction box body when necessary, so that the working efficiency and stability of the junction box body are improved.

Description

Photovoltaic junction box

Technical Field

The utility model relates to the technical field of photovoltaic wiring, in particular to a photovoltaic junction box.

Background

Along with the continuous increase of people's clean energy demand, in fields such as building, traffic, energy conversion is imperative, and in this process, solar photovoltaic system becomes a widely used clean energy type, and photovoltaic system generally contains parts such as photovoltaic board, photovoltaic dc-to-ac converter, photovoltaic cell group, and in photovoltaic power plant that photovoltaic module constitutes, photovoltaic dc-to-ac converter and photovoltaic cell group's power is all very big, and consequently their wiring problem is especially important, and photovoltaic terminal box plays crucial effect as an important subassembly to photovoltaic system's performance and security.

A photovoltaic junction box (application number: CN 202021659021.1) comprises a housing and a cover plate. The top and the bottom opening of casing, the inner chamber of casing is filled with the sealant layer, and the liquid cooling board is installed to the bottom surface of sealant layer, and the liquid cooling board is used for cooling encapsulation in the electronic component in the sealant layer. The cover plate is provided with a heat dissipation hole and covers the top of the shell; however, solar photovoltaic systems are usually installed in places exposed to sunlight, and the junction box has high temperature requirements and is subjected to high-temperature environments for a long time, so that electrical components adopted in the traditional junction box are prone to failure.

Disclosure of Invention

The present utility model is directed to a photovoltaic junction box, which solves the above-mentioned problems of the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a photovoltaic terminal box, includes the terminal box body, the lower extreme fixed mounting of terminal box body has the wiring pipeline, the inside of terminal box body is provided with pulls out and inserts heat dissipation mechanism and monitoring mechanism, pull out and insert heat dissipation mechanism and include heat dissipation storehouse, filter screen, first fan, first induced air baffle, second fan and second induced air baffle, the inside grafting of terminal box body has the heat dissipation storehouse, the front end fixed mounting of heat dissipation storehouse has the filter screen, the inside front end fixed mounting of heat dissipation storehouse has first fan, the middle part fixed mounting of heat dissipation storehouse has first induced air baffle, the rear of first induced air baffle is provided with the second induced air baffle, the inside rear end fixed mounting of heat dissipation storehouse has the second fan.

Optionally, a plurality of first fan fixed mounting is in the inside of heat dissipation storehouse, and a plurality of second fan fixed mounting is in the inside of heat dissipation storehouse, first induced air baffle and second induced air baffle all are arc structure.

Optionally, pull out and insert heat dissipation mechanism still includes positioning screw, holding down plate, return spring, installation fagging, heat dissipation aluminum plate and pull ring, the middle part in heat dissipation storehouse is provided with positioning screw, the front end fixed mounting in heat dissipation storehouse has the pull ring.

Optionally, a lower pressing plate is installed below the positioning screw, and a return spring is fixedly installed at the lower end of the lower pressing plate.

Optionally, both ends all fixed mounting have the installation fagging about the holding down plate, both ends all fixed mounting have heat dissipation aluminum plate about the installation fagging.

Optionally, the monitoring mechanism includes temperature sensor, first current monitor and second current monitor, inside left end fixed mounting of terminal box body has temperature sensor.

Optionally, a connector is fixedly installed in the middle of the inner side of the junction box body, and the first current monitor and the second current monitor are located in the middle of the connector.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the plug-in heat dissipation mechanism is arranged, the plug-in heat dissipation mechanism adopts a plug-in structure, and the whole heat dissipation mechanism can be conveniently connected, detached and installed with the photovoltaic junction box in a plug-in manner, so that the later maintenance and operation are convenient, the time and cost required for detaching and installing the heat dissipation mechanism are reduced, and the operation difficulty of staff is reduced; meanwhile, the plug-in heat dissipation mechanism can better control the air flow in the junction box body, so that the air flow is more reasonable in condition, and the heat dissipation effect and the safety of the whole junction box body are further improved.

2. According to the photovoltaic power station system, the monitoring mechanism is arranged, the first current monitor and the second current monitor sense direct current, the monitored current signals are converted into voltage or current signals to be output, and the current monitoring sensor is arranged in the junction box body, so that the current of the photovoltaic battery pack can be monitored, faults can be found and processed in time, and the stability and reliability of the photovoltaic power station system are guaranteed; the temperature sensor is used for sensing the change environment temperature to obtain temperature data, so that the temperature of an electric device in the junction box body can be timely monitored by the temperature sensor, and faults and safety problems when the temperature limit is exceeded are avoided; when the temperature is too high, the plug-in heat dissipation mechanism is started automatically to conduct heat dissipation operation; the monitoring mechanism can help timely monitor the state of the junction box body and adjust the junction box body when necessary, so that the working efficiency and stability of the junction box body are improved.

Drawings

FIG. 1 is a schematic view of a three-dimensional front view of the present utility model;

FIG. 2 is a schematic plan view of the present utility model;

FIG. 3 is a schematic view of the present utility model in a perspective top view;

FIG. 4 is a schematic view of the three-dimensional rear view of the present utility model;

FIG. 5 is a schematic view of a three-dimensional bottom view of the present utility model;

FIG. 6 is a schematic diagram of a three-dimensional cross-section of the present utility model;

FIG. 7 is a schematic diagram of a second embodiment of the present utility model in a three-dimensional cross-section;

FIG. 8 is a three-dimensional cross-sectional schematic view of the present utility model;

FIG. 9 is a schematic diagram of a three-dimensional cross-section of the present utility model;

FIG. 10 is a schematic view of the structure of FIG. 8A in a three-dimensional enlarged manner according to the present utility model;

fig. 11 is a schematic view of the structure of fig. 9B in a three-dimensional enlarged manner according to the present utility model.

In the figure: 1. a junction box body; 2. pulling and inserting a heat dissipation mechanism; 201. a heat dissipation bin; 202. a filter screen; 203. a first fan; 204. a first induced draft baffle; 205. a second fan; 206. a second induced draft baffle; 207. positioning a screw; 208. a lower pressing plate; 209. a return spring; 210. mounting a supporting plate; 211. a heat-dissipating aluminum plate; 212. a pull ring; 3. a monitoring mechanism; 301. a temperature sensor; 302. a first current monitor; 303. a second current monitor; 4. a wire connector; 5. and (5) wiring the pipeline.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. 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.

Referring to fig. 1-11, in the embodiment of the utility model, a photovoltaic junction box comprises a junction box body 1, a junction pipeline 5 is fixedly arranged at the lower end of the junction box body 1, a plug-in heat dissipation mechanism 2 and a monitoring mechanism 3 are arranged in the junction box body 1, the plug-in heat dissipation mechanism 2 comprises a heat dissipation bin 201, a filter screen 202, a first fan 203, a first induced air baffle 204, a second fan 205 and a second induced air baffle 206, a heat dissipation bin 201 is inserted in the junction box body 1, a filter screen 202 is fixedly arranged at the front end of the heat dissipation bin 201, a first fan 203 is fixedly arranged at the front end of the heat dissipation bin 201, a first induced air baffle 204 is fixedly arranged at the middle part of the heat dissipation bin 201, a second induced air baffle 206 is arranged at the rear end of the first induced air baffle 204, a plurality of first fans 203 are fixedly arranged in the heat dissipation bin 201, a plurality of second fans 205 are fixedly arranged in the heat dissipation bin 201, the first induced air baffle 204 and the second induced air baffle 206 are of a structure, a left support plate 208 and a right support plate 208 are fixedly arranged at the front end of the heat dissipation bin 201, a left support plate 208 and a right support plate 208 are fixedly arranged at the lower end of the heat dissipation bin 208, a left support plate 208 is fixedly arranged at the lower end of the left support plate 208 and the lower end of the support plate 208 is fixedly arranged at the lower end of the support plate 212, and the left support plate 208 is fixedly arranged at the lower end of the support plate 208, and the lower end of the support plate 212 is fixedly arranged at the lower end of the support plate 208, and the support plate 208 is fixedly arranged at the lower end of the support plate 212;

the plug-in radiating mechanism 2 adopts a plug-in structure, and the integral radiating mechanism can be conveniently connected, detached and installed with the photovoltaic junction box in a plug-in mode, so that later maintenance and operation are convenient, the time and cost for detaching and installing the radiating mechanism are reduced, and the operation difficulty of workers is reduced; meanwhile, the plug-in heat dissipation mechanism 2 can better control the air flow in the junction box body 1, so that the air flow condition is more reasonable, and the heat dissipation effect and the safety of the whole junction box body 1 are further improved;

the monitoring mechanism 3 comprises a temperature sensor 301, a first current monitor 302 and a second current monitor 303, wherein the temperature sensor 301 is fixedly arranged at the left end inside the junction box body 1, the wire connector 4 is fixedly arranged in the middle of the inner side of the junction box body 1, and the first current monitor 302 and the second current monitor 303 are positioned in the middle of the wire connector 4;

the first current monitor 302 and the second current monitor 303 sense direct current, convert the monitored current signal into voltage or current signal for output, and set up a current monitoring sensor in the junction box body 1, which can help monitor the current of the junction box body 1, and find and process faults in time to ensure the stability and reliability of the photovoltaic station system; the temperature sensor 301 is used for sensing the changing environment temperature to obtain temperature data, and the temperature sensor 301 can be used for timely monitoring the temperature of the internal receiving device in the junction box body 1, so that faults and safety problems are avoided when the temperature limit is exceeded; when the temperature is too high, the plug-in heat dissipation mechanism 2 is started to conduct heat dissipation operation; the monitoring mechanism 3 can help monitor the state of the junction box body 1 in time and adjust the state if necessary, thereby improving the working efficiency and stability of the junction box body 1.

The working principle of the utility model is as follows: before the photovoltaic junction box is used, the first fan 203 and the second fan 205 are required to be connected with the temperature sensor 301 in advance, when the photovoltaic junction box is used, if a high temperature condition occurs, the temperature sensor 301 transmits high temperature information to the first fan 203 and the second fan 205, the first fan 203 and the second fan 205 work synchronously, the first fan 203 draws air from the outside, the second fan 205 discharges the air drawn by the first fan 203 and the air in the junction box body 1 to the outside, most of the air is downwards poured into the junction box body 1 under the radian influence of the first induced air baffle 204, ventilation and heat dissipation are carried out on devices in the junction box body 1, and meanwhile, the temperature of the heat dissipation aluminum plate 211 is reduced under the influence of high-speed air flow, so that the efficient cooling effect can be realized; when the heat dissipation mechanism 2 is installed and plugged, only the heat dissipation bin 201 is required to be inserted into the junction box body 1, the positioning screw 207 is rotated, the effects of the lower pressing plate 208, the return spring 209, the installation supporting plate 210 and the heat dissipation aluminum plate 211 can be achieved while the heat dissipation bin 201 is fixed, after the heat dissipation aluminum plate 211 moves downwards, the refrigerating effect of the heat dissipation aluminum plate 211 can downwards act on the wiring device 4 inside the junction box body 1, the above beneficial effects are integrated, the reliability and durability of the junction box body 1 can be improved through the whole heat dissipation mechanism 2, the maintenance and cleaning processes are simplified, the stable capacity of a photovoltaic power station is facilitated, the service life of equipment is prolonged, the monitoring mechanism 3 plays the role of monitoring the current and the temperature, the current of the junction box body 1 can be helped, faults are timely found and processed to ensure the stability and the reliability of a photovoltaic station system, and faults and safety problems are avoided when the temperature limit is exceeded.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a photovoltaic terminal box, includes terminal box body (1), the lower extreme fixed mounting of terminal box body (1) has wiring pipeline (5), its characterized in that: the inside of terminal box body (1) is provided with pulls out plug cooling mechanism (2) and monitoring mechanism (3), pull out plug cooling mechanism (2) including heat dissipation storehouse (201), filter screen (202), first fan (203), first induced air baffle (204), second fan (205) and second induced air baffle (206), the inside grafting of terminal box body (1) has heat dissipation storehouse (201), the front end fixed mounting of heat dissipation storehouse (201) has filter screen (202), the inside front end fixed mounting of heat dissipation storehouse (201) has first fan (203), the middle part fixed mounting of heat dissipation storehouse (201) has first induced air baffle (204), the rear of first induced air baffle (204) is provided with second induced air baffle (206), the inside rear end fixed mounting of heat dissipation storehouse (201) has second fan (205).

2. A photovoltaic junction box according to claim 1, characterized in that: the first fans (203) are fixedly arranged in the radiating bin (201), the second fans (205) are fixedly arranged in the radiating bin (201), and the first air guiding baffle plates (204) and the second air guiding baffle plates (206) are of arc structures.

3. A photovoltaic junction box according to claim 1, characterized in that: the pull-plug radiating mechanism (2) further comprises a positioning screw (207), a lower pressing plate (208), a return spring (209), an installation supporting plate (210), a radiating aluminum plate (211) and a pull ring (212), wherein the positioning screw (207) is arranged in the middle of the radiating bin (201), and the pull ring (212) is fixedly arranged at the front end of the radiating bin (201).

4. A photovoltaic junction box according to claim 3, characterized in that: a lower pressing plate (208) is arranged below the positioning screw rod (207), and a return spring (209) is arranged at the lower end of the lower pressing plate (208).

5. The photovoltaic junction box of claim 4, wherein: the left end and the right end of the lower pressing plate (208) are fixedly provided with installation supporting plates (210), and the left end and the right end of the installation supporting plates (210) are fixedly provided with heat dissipation aluminum plates (211).

6. A photovoltaic junction box according to claim 1, characterized in that: the monitoring mechanism (3) comprises a temperature sensor (301), a first current monitor (302) and a second current monitor (303), and the temperature sensor (301) is fixedly arranged at the left end inside the junction box body (1).

7. The photovoltaic junction box of claim 6, wherein: the middle part of terminal box body (1) inboard fixed mounting has connector (4), first current monitor (302) and second current monitor (303) are located the middle part of connector (4).