CN219204459U - Photovoltaic junction box assembly - Google Patents

Abstract

The utility model provides a photovoltaic junction box assembly, which comprises a junction box with a conductive substrate arranged therein and a shutdown wire box with a shutdown module arranged therein, wherein one of the junction box and the shutdown wire box is provided with a plug-in part, the other is provided with a butt joint part fixedly connected with the plug-in part in a plug-in way, and a conductive structure which is contacted after the plug-in part is connected with the butt joint part to realize electrical connection is arranged between the plug-in part and the butt joint part. According to the photovoltaic junction box assembly, through the split junction box and the shutdown junction box, the plug-in installation mode and the electric connection mode of mutual contact are adopted, so that the junction box and the shutdown junction box can be quickly installed and detached, and when the shutdown junction box fails, the replacement and maintenance cost and difficulty of the shutdown junction box are reduced.

Description

Photovoltaic junction box assembly

Technical Field

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

Background

Because roof photovoltaic is installed photovoltaic system on the building roof, therefore, also put forward higher demands to roof photovoltaic system's electrical safety, namely under the condition of conflagration, photovoltaic module need stop to export high voltage to outside in 30 seconds after triggering turn-off signal to protect disaster relief personnel's safety. In order to achieve the functions, the current practice in the industry is to install a box body with a quick turn-off function on a photovoltaic module, and the box body with the quick turn-off function has high installation cost and increases the single watt cost of a photovoltaic power station.

And the manufacturer integrates the quick-turn-off module into a common junction box, however, when the quick-turn-off module fails, the whole junction box needs to be replaced, and the cost and difficulty of replacing the junction box are increased.

In view of the foregoing, there is a need for a new photovoltaic junction box assembly that addresses the above-described issues.

Disclosure of Invention

The present utility model provides a photovoltaic junction box assembly to solve the above-mentioned problems.

In order to achieve the above purpose, the technical scheme provided by the utility model is as follows:

the utility model provides a photovoltaic junction box assembly, which comprises a junction box with a conductive substrate arranged therein and a shutdown wire box with a shutdown module arranged therein, wherein one of the junction box and the shutdown wire box is provided with a plug-in part, the other is provided with a butt joint part fixedly connected with the plug-in part in a plug-in way, and a conductive structure which is contacted after the plug-in part is plugged in the butt joint part to realize electrical connection is arranged between the plug-in part and the butt joint part.

Further, the plugging part and the butt joint part are respectively provided with a conductive structure, and the conductive structures are respectively and electrically connected with the conductive substrate and the turn-off module.

Further, the butt joint part is provided with a slot which extends longitudinally and is opened towards one side along the longitudinal direction, a first end wall positioned at one side of the slot, and an opening which is arranged on the first end wall and is communicated with the slot; the plug-in part is provided with a connecting part protruding into the opening and a limiting part protruding into the slot from the end part of the connecting part in the lateral direction.

Further, the conductive structure is provided with a first contact arranged at a position, opposite to the first end wall, of the inner wall of the slot, the first contact is exposed towards the interior of the slot, and the conductive structure is further provided with a second contact arranged on the limiting part to be contacted with the first contact.

Further, the plug-in part is arranged on the junction box, the butt joint part is arranged on one side of the junction box adjacent to the turn-off line box, the plug-in part and the butt joint part are provided with through holes for communicating the junction box with the turn-off line box, and the conductive structure is arranged in the through holes.

Further, the conductive structure comprises a base body part positioned in the through hole and a conductive sheet arranged at one end of the base body part, the base body part is electrically connected with the conductive substrate or the turn-off module, and the first contact and the second contact are formed on the conductive sheet.

Further, a wire connecting the conductive substrate and the base portion is provided in the junction box.

Further, the conductive structure and the inner wall of the through hole are fixed through the protrusion and the groove.

Further, the abutting portion further comprises a locking portion limiting the plug-in portion longitudinally.

Further, the photovoltaic junction box assembly further comprises a cable structure located on one side, far away from the junction box, of the Guan Duanxian box, the cable structure is in plug-in fit with the shutdown junction box through a plug-in portion and a butt-joint portion, and a conductive structure for achieving electric connection in a plug-in process is also arranged between the plug-in portion and the butt-joint portion.

Compared with the prior art, the photovoltaic junction box assembly has the beneficial effects that: according to the photovoltaic junction box assembly, through the split junction box and the shutdown line box, the rapid installation and disassembly between the junction box and the shutdown line box are realized by adopting the installation mode of splicing and the electric connection mode of mutual contact, and when the shutdown line box fails, the shutdown line box is directly disassembled and replaced, so that the cost and difficulty of replacement and maintenance of the shutdown line box are reduced.

Drawings

Fig. 1 is a perspective view of a photovoltaic junction box assembly of one embodiment of the photovoltaic junction box assembly of the present utility model.

Fig. 2 is an exploded view of the components of the photovoltaic junction box assembly of fig. 1.

Fig. 3 is a perspective view of the closure of fig. 2 at another angle.

Fig. 4 is a perspective view of the conductive structure of fig. 2.

Fig. 5 is a cross-sectional view taken along A-A in fig. 1.

Fig. 6 is a perspective view of a photovoltaic junction box assembly of another embodiment of the photovoltaic junction box assembly of the present utility model.

Fig. 7 is an exploded view of the components of the photovoltaic junction box assembly of fig. 6.

The photovoltaic module comprises a 10-photovoltaic box body, 11-conducting wires, 20-shutoff box bodies, 30-plug-in parts, 31-connecting parts, 32-limiting parts, 33-through holes, 40-butt joint parts, 41-inserting grooves, 42-openings, 43-first end walls, 44-locking parts, 50-conducting structures, 51-base body parts, 52-conducting sheets, 53-first contacts, 54-second contacts, 55-bulges, 60-cover bodies, 70-cable structures and 71-cables.

Detailed Description

In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

It should be noted that the orientation or positional relationship indicated in the present utility model is based on the orientation or positional relationship shown in the auxiliary drawings, which is merely for simplifying the description of the present utility model, and does not indicate or imply that the device must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of the present utility model.

In the various illustrations of the utility model, some dimensions of structures or portions may be exaggerated relative to other structural portions for convenience of illustration, and thus serve only to illustrate the basic structure of the inventive subject matter.

The utility model provides a photovoltaic junction box assembly, which can rapidly trigger a turn-off signal to stop outputting high voltage outwards under the condition of electrical safety, so as to protect the safety of disaster relief personnel. As shown in fig. 1 to 5, the junction box assembly includes a junction box 10 with a conductive substrate (not shown) therein, a shutdown wire box 20 with a shutdown module (not shown) therein, one of the junction box 10 and the shutdown wire box 20 is provided with a plugging portion 30, the other is provided with a butt-joint portion 40 fixedly plugged with the plugging portion 30, and a conductive structure 50 is provided between the plugging portion 30 and the butt-joint portion 40 for contacting after plugging to realize electrical connection.

According to the photovoltaic junction box assembly, through the split junction box 10 and the shutdown junction box 20, the rapid installation and disassembly between the junction box 10 and the shutdown junction box 20 are realized by adopting the plug-in installation mode and the mutual contact electric connection mode, and when the shutdown junction box 20 fails, the shutdown junction box 20 is directly disassembled and replaced, so that the replacement and maintenance cost and difficulty of the shutdown junction box 20 are reduced.

The present utility model defines the arrangement direction of the junction box 10 and the shutdown wire box 20 as the transverse direction, and the thickness direction of the junction box 10 or the shutdown wire box 20 as the longitudinal direction.

The conductive substrate in the junction box 10 is fixed at the bottom of the junction box 10, and is electrically connected with the bus bar of the photovoltaic module to conduct the current and the voltage of the photovoltaic module, while the conductive structure 50 is located at the side of the junction box 10, so that a wire 11 is disposed in the junction box body 10, and the conductive structure 50 and the conductive substrate are connected by means of the wire 11.

The shutdown module is arranged in the shutdown wire box 20, the shutdown module controls the operation of the junction box 10, and after triggering the switch of the shutdown module, the junction box 10 is controlled to stop outputting high voltage to the outside.

In the present utility model, the junction box 10 and the disconnection box 20 are fixed by plugging the plugging portion 30 and the abutting portion 40, the plugging portion 30 may be provided on the junction box 10 or on the disconnection box 20, and the abutting portion 40 may be provided on the disconnection box 20 or on the junction box 10, and the plugging portion 30 is provided on the junction box 10 and the abutting portion 40 is provided on the disconnection box 20 will be described in detail.

Specifically, as shown in fig. 3 and 5, the abutting portion 40 has a slot 41 extending longitudinally and opening toward one side in the longitudinal direction, a first end wall 43 located at one side of the slot 41, and an opening 42 formed on the first end wall 43 and communicating with the slot 41, the slot 41 and the opening 42 are in a convex cavity to accommodate the plugging portion 30, and the first end wall 43 also has a function of limiting the plugging portion 30 in the transverse direction.

In order to improve the sealing performance and increase the path of moisture invasion, the butt joint part 40 accommodates the plug joint part 30 in the longitudinal direction, preferably, the butt joint part 40 is plugged into the plug joint part 30 from top to bottom, so that no gap is formed on the surface, in which the plug joint part 30 and the butt joint part 40 are matched, of the photovoltaic junction box assembly, the sealing performance of the junction box 10 is improved, and meanwhile, the appearance of the photovoltaic junction box assembly is concise and attractive.

Specifically, as shown in fig. 3, the docking portion 40 further includes a locking portion 44 for longitudinally limiting the plugging portion 30, where the locking portion 44 is located at the bottom end of the docking portion 40 and protrudes into the opening 42 to limit the plugging portion 30 in a locking manner.

Correspondingly, as shown in fig. 2 and 5, the plugging portion 30 has a connecting portion 31 protruding into the opening 42, and a limiting portion 32 protruding laterally into the slot 41 from an end portion of the connecting portion 31, and the first end wall 43 is located in a limiting space formed by the connecting portion 31 and the limiting portion 32, so as to implement mutual limitation of the plugging portion 30 and the abutting portion 40 in a lateral direction, so as to enhance the bonding strength of the junction box 10 and the shutdown wire box 20.

As a preferred embodiment of the present utility model, the plugging portion 30 and the docking portion 40 each have a conductive structure 50, the conductive structure 50 on the plugging portion 30 is electrically connected with the conductive substrate, and the conductive structure 50 on the docking portion 40 is electrically connected with the shutdown module, so that a good electrical connection is formed between the junction box 10 and the shutdown wire box 20.

Of course, the conductive structure 50 may be only disposed on the plugging portion 30 or the docking portion 40, and directly contact with the docking portion 40 or the charging member of the plugging portion 30, or may form an electrical connection between the junction box 10 and the shutdown wire box 20.

As another preferred embodiment of the present utility model, the conductive structure 50 has a first contact 53 disposed on the inner wall of the socket 41 opposite to the first end wall 43, the first contact 53 being exposed toward the inside of the socket 41, and the conductive structure 50 further has a second contact 54 disposed on the limit portion 32 to contact with the first contact 53. After the plugging portion 30 and the docking portion 40 are plugged, the first contact 53 contacts with the second contact 54 to achieve electrical connection between the junction box 10 and the shutdown wire box 20.

As another preferred embodiment of the present utility model, the plugging portion 30 and the docking portion 40 are provided with a through hole 33 for communicating the inside of the junction box 10 with the inside of the shutdown wire box 20, and the conductive structure 50 is disposed in the through hole 33, so as to facilitate fixing and positioning of the conductive structure 50.

Specifically, as shown in fig. 4, the conductive structure 50 includes a base portion 51 located in the through hole 33, a conductive sheet 52 disposed at one end of the base portion 51, the base portion 51 located on the plug portion 30 is electrically connected to the conductive substrate by means of the conductive wire 11, the base portion 51 located on the docking portion 40 is electrically connected to the shutdown module, and the first contact 53 and the second contact 54 are formed on the conductive sheet 52.

The base portion 51 is preferably a PCB board, and since there is a package outside the PCB board, the conductive sheet 52 or the conductive wire 11 or the shut-off module can be selectively electrically connected through both ends along the axial direction thereof.

The conductive sheet 52 is preferably a metal sheet such as a copper sheet with good electrical conductivity, so as to achieve good electrical connection between the two conductive structures 50.

Further, the conductive structure 50 is fixed to the inner wall of the through hole 33 by a protrusion 55 and a groove (not shown). The protrusions 55 are provided in two pairs and are oppositely arranged on the conductive structure 50, the grooves are formed in the inner wall of the through hole 33, the inner wall of the through hole 33 is beneficial to forming the grooves, and specifically, the protrusions 55 are formed on the outer side of the base body 51 along the radial direction, so that the conductive performance of the conductive sheet 52 is not affected.

The photovoltaic junction box assembly further comprises a cover body 60, the cover body 60 covering the photovoltaic junction box body 10 and the cover body 60 covering the shut-off box body 20 are identical in structure and plug-in matching mode with the box body, the path of water vapor invading to the inside from the cover body 60 can be increased, and then the sealing effect of the junction box 10 or the shut-off box 20 is improved.

As another preferred embodiment of the present utility model, as shown in fig. 6 and 7, the photovoltaic junction box assembly further includes a cable structure 70 located at a side of the shutdown junction box 20 away from the junction box 10, the cable structure 70 is in plug-in fit with the shutdown junction box 20 through a plug-in portion 30 and a docking portion 40, and a conductive structure 50 is also provided between the plug-in portion 30 and the docking portion 40 for making contact during the plug-in process to realize electrical connection, so as to conduct the current and the voltage of the photovoltaic assembly through the cable, in this embodiment, the plug-in portion 30 is disposed at a side of the shutdown junction box 20 away from the junction box 10, and the docking portion 40 is disposed on the cable structure 70, wherein the arrangement and the functions of the plug-in portion 30, the docking portion 40 and the conductive structure 50 are the same as those of the plug-in portion 30, the docking portion 40 and the conductive structure 50, and are not repeated.

In summary, according to the photovoltaic junction box assembly of the present utility model, through the split junction box 10 and the shutdown junction box 20, the rapid installation and disassembly between the junction box 10 and the shutdown junction box 20 are realized by adopting the plugging installation mode and the mutual contact electrical connection mode, and when the shutdown junction box 20 fails, the shutdown junction box 20 is directly disassembled and replaced, so as to reduce the cost and difficulty of replacing and maintaining the shutdown junction box 20.

It should be understood that although the present disclosure describes embodiments in terms of examples, not every embodiment is provided with a single embodiment, and that this description is for clarity only, and that the skilled artisan should recognize that the embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.

The above list of detailed descriptions is only specific to practical embodiments of the present utility model, and is not intended to limit the scope of the present utility model, and all equivalent embodiments or modifications that do not depart from the spirit of the present utility model should be included in the scope of the present utility model.

Claims (10)

1. The utility model provides a photovoltaic terminal box subassembly, its characterized in that includes a terminal box of establishing conductive substrate in, a shut-off line box of establishing shut-off module in, one of terminal box and shut-off line box is equipped with grafting portion, another is equipped with the butt joint portion fixed with grafting portion grafting, have between grafting portion and the butt joint portion and contact in order to realize the conductive structure of electric connection after grafting.

2. The photovoltaic junction box assembly of claim 1 wherein the plug portion and the docking portion each have a conductive structure electrically connected to the conductive substrate and the shutdown module, respectively.

3. The photovoltaic junction box assembly of claim 2 wherein the interface has a slot extending longitudinally and opening longitudinally to one side, a first end wall on one side of the slot, an opening in the first end wall and communicating with the slot; the plug-in part is provided with a connecting part protruding into the opening and a limiting part protruding into the slot from the end part of the connecting part in the lateral direction.

4. The photovoltaic junction box assembly of claim 3 wherein the conductive structure has a first contact disposed on an inner wall of the socket opposite the first end wall, the first contact exposed toward the interior of the socket, and a second contact disposed on the retainer portion to contact the first contact.

5. The photovoltaic junction box assembly of claim 4 wherein the plug-in portion is disposed on the junction box and the mating portion is disposed on a side of the shutdown junction box adjacent the junction box, the plug-in portion and the mating portion are provided with through holes communicating the junction box with the shutdown junction box, and the conductive structure is disposed in the through holes.

6. The photovoltaic junction box assembly of claim 5 wherein the conductive structure comprises a base portion located in the through hole, a conductive tab located at one end of the base portion, the base portion being electrically connected to the conductive substrate or the shutdown module, the first contact and the second contact being formed on the conductive tab.

7. The photovoltaic junction box assembly of claim 6 wherein a wire is disposed within said junction box that connects the conductive substrate and the base portion.

8. The photovoltaic junction box assembly of claim 5 wherein said conductive structure is secured to an inner wall of said through hole by protrusions and grooves.

9. The photovoltaic junction box assembly of claim 1 wherein said docking portion further includes a locking portion that longitudinally retains said plug portion.

10. The photovoltaic junction box assembly of any of claims 1 to 9 further comprising a cable structure located on a side of the Guan Duanxian box remote from the junction box, the cable structure also mating with the shutdown box by way of a mating portion and a mating portion, the mating portion and mating portion also having conductive structures therebetween that make contact during mating to effect an electrical connection.

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