CN201639221U

CN201639221U - Solar photovoltaic terminal box component

Info

Publication number: CN201639221U
Application number: CN2009202914736U
Authority: CN
Inventors: 马庆泰; 陈孝群; 胡林涛; 王峰; 周春夫
Original assignee: Tyco Electronics Shanghai Co Ltd
Current assignee: Tyco Electronics Shanghai Co Ltd
Priority date: 2009-12-22
Filing date: 2009-12-22
Publication date: 2010-11-17
Anticipated expiration: 2019-12-22
Also published as: DE202010013178U1

Abstract

The utility model relates to the field of power generation of solar cells, in particular to a solar photovoltaic terminal box component applied to a solar cell generating system. The solar photovoltaic terminal box component comprises a box body, a box cover, an external cable and an electric connector arranged in the box body; the electric connector at least comprises a metal sheet simultaneously connected with an anode and a cathode of a solar cell board and a connecting terminal electrically connected with the external cable; and the box body is provided with a glue-filled sealing chamber, wherein an annular groove formed at the circumference of the glue-filled sealing chamber is arranged between the internal wall of the box body and the glue-filled sealing chamber. The solar photovoltaic terminal box component is provided with the annular groove in the box body and a drainage structure in the annular groove, therefore, not only the medium problems, such as the influence on the electric connection of the terminal box and the like, due to water accumulating and icing in the box body can be effectively solved, but also the structure more convenient for disassembling the box body and the box cover can be provided.

Description

The photovoltaic junction box assembly

[technical field]

The utility model relates to the solar cell power generation field, relates in particular to a kind of photovoltaic junction box assembly that is applied in the solar cell power generation system.

[background technology]

In the electric connection technology of solar cell power generation system, adopt the photovoltaic junction box assembly to realize electrical connection between the solar panel usually.The application scenario of considering terminal box is outdoor environment normally, and therefore, thereby media such as control rainwater infiltrate terminal box and the inner electrical connection of influence of freezing therein is the Consideration of an outbalance in the terminal box design.In order to solve the problems of the technologies described above, in the prior art, the electrical connection module in the annular seal space of butted line box adopts the mode of sealant pouring and sealing to realize waterproof usually.Problem is, waits out of doors under the applied environment, and media such as rainwater are put aside in box body through regular meeting, and the media such as rainwater of savings in box body is easy to freeze and destroy box body, thereby electrical connection is impacted.In addition, existing terminal box, the assembly structure between box body and the lid is comparatively complicated, and the buckle structure between especially existing box body and the lid has difficulties in dismounting.

Therefore, if a novel photovoltaic junction box assembly can be provided, it can either avoid existing in the box body media such as ponding, avoid influencing electrical connection because of box body inner product water freezing, assembly relation easily can be provided again between a kind of box body and the lid, making things convenient for the dismounting between box body and the lid, will be the another big main demand trend of industry.

[utility model content]

The technical problem of mentioning in view of the aforementioned technical background, at least one purpose of the present utility model is to provide a kind of photovoltaic junction box assembly, this photovoltaic junction box assembly is by being provided with annular groove and offering discharge structure in annular groove in box body, can solve effectively that the ponding that exists in the box body freezes and the problem that influences the media such as electrical connection of terminal box can provide the structure that just helps the dismounting between box body and the lid again.

Another purpose of the present utility model is to provide a kind of terminal box, and this photovoltaic junction box assembly is simple in structure, and has forming technology easily.

At least one technical scheme of the present utility model is achieved in that a kind of photovoltaic junction box assembly, comprise box body, lid, external cable and the electric connector that is positioned at box body, electric connector comprises that at least the sheet metal and the external cable that are connected with the positive and negative electrode of solar panel simultaneously form the splicing ear that is electrically connected, box body has the sealant pouring and sealing chamber, wherein, also has the annular groove all around that is formed on the sealant pouring and sealing chamber between inboard wall of cartridge and the sealant pouring and sealing chamber.

Wherein, the annular groove bottom is provided with drainage openings.

Further, form first buckle structure in the annular groove of box body, form second buckle structure that cooperates with first buckle structure on the lid, when lid and box body fit together, first buckle structure and the second buckle structure snap fit.

Particularly, drainage openings comprises and is formed on the annular groove bottom and connects first drainage openings to annular groove; Wherein, first buckle structure is formed near first drainage openings.

Preferably, first drainage openings is opened in the sidewall of box body and the intersection of diapire.

According to a specific embodiment, first buckle structure is a projection, and projection is formed on the sidewall of box body towards annular groove, and second buckle structure is the U-shape lock button arm of extension from lid, when lid and box body assembling, and U-shape lock button arm and projection snap fit.

In a specific embodiment, the lower edge of projection is concordant with the upper surface of first drainage openings, and when lid and box body assembling, the transverse arm at least of U-shape lock button arm is exposed in first drainage openings.

In another specific embodiment, the lower edge of projection protrudes in the upper surface of first drainage openings, and when lid and box body assembling, the transverse arm at least of U-shape lock button arm is exposed in first drainage openings.

Preferably, first drainage openings is a plurality of, is symmetricly set on the both sides of box body.

Further, drainage openings also comprises second drainage openings, and second drainage openings is opened in the sidewall of box body and the intersection of diapire, and is formed near the Wiring port of box body.

The utility model has following technique effect at least: the photovoltaic junction box assembly that the utility model provides, by around the sealant pouring and sealing chamber of box body, annular groove being set and in annular groove, offering discharge structure, in time the media such as water that occur in the discharge-ring connected in star electrical connection function that icing phenomenon influences the photovoltaic junction box assembly then occurs with the media of avoiding putting aside in annular groove such as water.Simultaneously, the photovoltaic junction box assembly that the utility model provides, for the ease of the dismounting between box body and the lid, in the matching relationship of box body and lid, adopt shackle designs such as kayser with when realizing assembling between the two, with design such as latching structure near the partial drainage structure, like this, the operator can realize the release of latching structure easily by above-mentioned discharge structure, so that realize the dismounting between box body and the lid.The terminal box that the utility model provides, simple in structure, and have forming technology easily.

[description of drawings]

For above-mentioned and other purpose of the present utility model, feature and advantage can be become apparent more, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.

Fig. 1 is a kind of schematic perspective view of the terminal box described in specific embodiment of the utility model, has shown the state when terminal box is connected with external cable;

Fig. 2 is the vertical view of terminal box shown in Figure 1;

Fig. 3 is a kind of cutaway view of terminal box shown in Figure 1;

Fig. 4 is the another kind of cutaway view of terminal box shown in Figure 1;

Fig. 5 is a kind of vertical view of the box body of terminal box shown in Figure 1;

Fig. 6 is a kind of perspective view of the box body of terminal box shown in Figure 1;

Fig. 7 is a kind of vertical view of the box body of terminal box shown in Figure 1.

[embodiment]

Describe embodiment of the present utility model below in detail, the example of described embodiment is shown in the drawings, and wherein identical from start to finish label is represented same or analogous element.The embodiment that describes below with reference to accompanying drawing is exemplary, is intended to explain the utility model, and can not be interpreted as a kind of restriction of the present utility model.

Fig. 1 and Fig. 2 have shown the photovoltaic junction box assembly described in the specific embodiment of the present utility model, wherein, for the clear internal structure that shows the terminal box box body, omitted the lid of terminal box among Fig. 1 and Fig. 2, state when simultaneously, Fig. 1 and Fig. 2 show terminal box and be connected with external cable; Fig. 3 and Fig. 4 are the cutaway views of the terminal box described in the above-mentioned specific embodiment, and it is clear to have shown discharge structure and the latching structure in the terminal box; Fig. 5-7 concrete structure that has shown the lid in the terminal box described in the above-mentioned specific embodiment.

At first see also Fig. 1 and 2, a kind of photovoltaic junction box assembly, comprise terminal box, be arranged on electric connector (not shown) and extraneous cable 3 in the terminal box, wherein electric connector comprises that at least the sheet metal (not shown) and the external cable 3 that are connected with the positive and negative electrode of solar panel simultaneously form the splicing ear 100 (referring to Fig. 3 and Fig. 4) that is electrically connected, and terminal box comprises box body 10 and lid 20 (referring to Fig. 3), and box body 10 and lid 20 cooperatively interact, to form complete terminal box.During application, terminal box is arranged on the solar panel, and external cable 3 is connected with splicing ear 100 (referring to Fig. 3 and Fig. 4) in the terminal box by the Wiring port on the terminal box 108, thereby realizes the electrical connection between external cable 3 and the sheet metal that the positive and negative electrode of solar panel is connected.

As illustrated in fig. 1 and 2, the box body 10 in the terminal box is rectangular shape, is formed with sealant pouring and sealing chamber 101 in the box body 10, and also has the annular groove 102 all around that is formed on sealant pouring and sealing chamber 101 between box body 10 inwalls and the sealant pouring and sealing chamber 101.And lid 20 cooperates with box body 10, when lid 20 and box body 10 fit together, and the seal cavity in moulding sealant pouring and sealing chamber 101, thereby the water-proof function of realization terminal box.Wherein, annular groove 102 bottoms are provided with drainage openings 105,106.

According to the utility model, shown in Fig. 5-7,, be formed with some first drainage openings 105 and second drainage openings 106 that connects to annular groove 102 around box body 10 in the bottom of box body 10.Particularly, shown in Fig. 5-7, first drainage openings 105 and second drainage openings 106 preferably are opened in the sidewall 103 of box body 10 and the intersection of diapire 104.And first drainage openings 105 and second drainage openings 106 are respectively a plurality of.Wherein, these first drainage openings 105 are symmetricly set on the both sides of box body 10, and second drainage openings 106 then is formed near the Wiring port 108 of box body 10.In this specific embodiment, first drainage openings 105 is four, be symmetricly set on the both sides of box body 10, and second drainage openings 106 is two, is separately positioned on the both sides of the Wiring port 108 of box body 10.Certainly, according to design concept of the present utility model, drainage openings is based on the design of carrying out for fear of savings medium such as water in annular groove, therefore, in another embodiment of the present invention, under the prerequisite that does not influence box body 10 structural stabilities own, drainage openings 105,106 also can be the annular drainage openings that forms around annular groove 102.Like this, terminal box in the photovoltaic junction box assembly that the utility model provides, by design in the utility model sealant pouring and sealing chamber 101 around annular groove 102 and in annular groove 102, offer drainage openings, when using, in case occur media such as ponding in the annular groove, just can make medium such as ponding discharge terminal box in time, avoid medium such as water at savings in annular groove and produce phenomenon such as freeze, thereby influence the electrical connection function of terminal box.

According to the utility model, form first buckle structure 110 in the annular groove 102 of box body 10, form second buckle structure 210 that cooperates with first buckle structure 110 on the lid 20, when lid 20 and box body 10 fit together, first buckle structure 110 and second buckle structure, 210 snap fit, thereby realize the sealing assembling between lid 20 and the box body 10, shown in Fig. 3 and 4.

As shown in Figure 3 and Figure 4, first buckle structure 110 that is arranged on the box body 10 is formed near first drainage openings 105, when lid 20 assembles with box body 10, be formed on first buckle structure, 110 snap fit on second buckle structure 210 and the box body 10 on the lid 20, thus the seal cavity in moulding sealant pouring and sealing chamber 101.According to the utility model,, help realizing that the release between first buckle structure 110 and second buckle structure 210 uses by first buckle structure 110 on the box body 10 being formed near first drainage openings 105.Particularly, see also Fig. 3 and Fig. 4, in this specific embodiment, first buckle structure 110 is a projection 110, projection 110 is formed on the sidewall 103 of box body 10 towards annular groove 102, and second buckle structure 210 is the U-shape lock button arm 210 of extension from lid 20, when lid 20 assembles with box body 10, and U-shape lock button arm 210 and projection 110 snap fit.Particularly, when lid 20 and box body 10 were assembled together, the transverse arm 211 of U-shape lock button arm 210 resisted the place, lower edge at projection 210, thereby realized the snap fit between first buckle structure 110 and second buckle structure 210.Particularly, according to the utility model, the lower edge of projection 210 both can be concordant with the upper surface of first drainage openings 105, can protrude in the upper surface of first drainage openings 105 again, when lid 20 assembled with box body 10, the transverse arm at least 211 of U-shape lock button arm 210 was exposed in first drainage openings 105.Like this, because the transverse arm 211 of U-shape lock button arm 210 was exposed in first drainage openings 105 when lid 20 assembled with box body 10, when needs with lid 20 when box body 10 disassembles, the operator only need use external tools such as similar screwdriver to touch the transverse arm 211 of U-shape lock button arm 210 by first row of openings 105 in box body 10, can realize the release between U-shape lock button arm 210 and the projection 110, thereby realize the dismounting between lid 20 and the box body 10 easily.According to the utility model, the design of on the box body 10 of terminal box, offering drainage openings, simple in structure, and have forming technology easily.

The explanation that above-mentioned embodiment of the present utility model is only exemplary principle of the present utility model and effect thereof, but not be used to limit the utility model, know and it will be understood by those skilled in the art that, under the situation that does not depart from spirit and scope of the present utility model, any changes and improvements that the utility model is done are all in scope of the present utility model.Rights protection scope of the present utility model, should as the application claim defined is as the criterion.

Claims

1. photovoltaic junction box assembly, comprise box body (10), lid (20), external cable (3) and the electric connector that is positioned at box body (10), described electric connector comprises that at least the sheet metal and the external cable (3) that are connected with the positive and negative electrode of solar panel simultaneously form the splicing ear (100) that is electrically connected, described box body (10) has sealant pouring and sealing chamber (101), it is characterized in that

Also has the annular groove (102) all around that is formed on described sealant pouring and sealing chamber (101) between described box body (10) inwall and the described sealant pouring and sealing chamber (101).

2. junction box assembly as claimed in claim 1 is characterized in that, described annular groove (102) bottom is provided with drainage openings (105,106).

3. junction box assembly as claimed in claim 1 or 2 is characterized in that,

Form first buckle structure (110) in the annular groove (102) of described box body (10), form second buckle structure (210) that cooperates with described first buckle structure (110) on the described lid (20), when described lid (20) and described box body (10) when fitting together, described first buckle structure (110) and described second buckle structure (210) snap fit.

4. junction box assembly as claimed in claim 3 is characterized in that, described drainage openings comprises:

Be formed on described annular groove (102) bottom and connect extremely first drainage openings (105) of described annular groove (102); Wherein, described first buckle structure (110) is formed near described first drainage openings (105).

5. junction box assembly as claimed in claim 4, wherein:

Described first drainage openings (105) is opened in the sidewall (103) of described box body (10) and the intersection of diapire (104).

6. junction box assembly as claimed in claim 5, wherein:

Described first buckle structure (110) is projection (110), described projection (110) is formed on the sidewall (103) of described box body (10) towards described annular groove (102), and described second buckle structure (210) is for extending the U-shape lock button arm (210) from described lid (20), when described lid (20) assembles with described box body (10), described U-shape lock button arm (210) and described projection (110) snap fit.

7. junction box assembly as claimed in claim 6, wherein:

The lower edge of described projection (110) is concordant with the upper surface of described first drainage openings (105), when described lid (20) assembled with described box body (10), the transverse arm at least (211) of described U-shape lock button arm (210) was exposed in described first drainage openings (105).

8. junction box assembly as claimed in claim 6, wherein:

The lower edge of described projection (110) protrudes in the upper surface of described first drainage openings (105), when described lid (20) assembled with described box body (10), the transverse arm at least (211) of described U-shape lock button arm (210) was exposed in described first drainage openings (105).

9. junction box assembly as claimed in claim 4, wherein:

Described first drainage openings (105) is a plurality of, is symmetricly set on the both sides of described box body (10).

10. junction box assembly as claimed in claim 4, described drainage openings also comprises:

Second drainage openings (106), described second drainage openings (106) are opened in the sidewall (103) of described box body (10) and the intersection of diapire (104), and are formed near the Wiring port (108) of described box body (10).