CN201690379U

CN201690379U - Connecting module of building integrated photovoltaic system

Info

Publication number: CN201690379U
Application number: CN201020133500XU
Authority: CN
Inventors: 王峰; 陈孝群; 周春夫; 张振华
Original assignee: Tyco Electronics Shanghai Co Ltd
Current assignee: Tyco Electronics Shanghai Co Ltd
Priority date: 2010-03-15
Filing date: 2010-03-15
Publication date: 2010-12-29
Anticipated expiration: 2020-03-15

Abstract

The utility model discloses a connecting module of a building integrated photovoltaic system which includes a shell and a cover. The shell is formed with at least one cavity; and the cover is used for covering the opening of at least one cavity; wherein the side wall of the cover is wrapped on the outer surface of the side wall of at least one cavity, so as to form at least one part of outer wall of the shell. Compared with the prior art, in the embodiment of the utility model, as the side wall of the cover is coated on the outer surface of the side wall of the cavity, and the side wall of the cover forms the outer wall of the shell instead of being inserted into the cavity, the cover does not occupy the space in the cavity, which guarantees an electric apparatus component in the cavity to have enough electric clearance and creepage distance, thereby improving the electric safety of internal electric components, and not needing to increase the size of a connecting box simultaneously.

Description

The Wiring module of building integrated photovoltaic system

Technical field

The utility model relates to building integrated photovoltaic (BIPV) technology, relates in particular to a kind of Wiring module of building integrated photovoltaic system.

Background technology

Solar energy is a kind of reproducible energy.With conversion of solar energy is that electric energy can energy savings, alleviates the power shortage problem, can reduce environmental pollution again, and therefore such technology has obtained the public's concern.It is that solar module (photovoltaic module) is installed on the roof of having built up by support that a kind of common solar energy utilizes mode, and the terminal box that is complementary with it is arranged on the back side of solar module usually.

A kind of new solar utilization technique one building integrated photovoltaic (BIPV) technology has appearred in recent years, this technology is integrated into wing with solar power generation (photovoltaic) product, for example daylighting roof, window or glass curtain wall, such photovoltaic product can also play in generating keeps out wind and rain and the effect of daylighting.

Fig. 8 shows the cutaway view of the Wiring module of existing building integrated photovoltaic system, and it has specifically shown the size of creepage distance d ' (but internally charged body beeline along insulating surface to outside hand contact site) and electric clearance g ' (but internally charged body is by air beeline to outside hand contact site).In Fig. 8,, therefore, only consider creepage distance and the electric clearance of internally charged body to lid opening because insulation processing is arranged at the bottom of Wiring module product.In the industry of photovoltaic Wiring module, creepage distance and electric clearance are had the most harsh Valuation Standard, require creepage distance will reach minimum 20mm, electric clearance will reach minimum 14mm.

As shown in Figure 8, in the Wiring module of existing building integrated photovoltaic system, the sidewall of cavity that holds the internal electrical connector constitutes the outer wall of whole terminal box in most external, and the sidewall of lid inserts in the cavity, is wrapped in inside by the sidewall of cavity.

Obviously, as shown in Figure 8, because the sidewall of lid is inserted in the cavity, add and require the Wiring module overall dimensions as far as possible little, so cause to increase creepage distance d ' and electric clearance g ' in the existing Wiring module, thereby the electrical security to the electric connector in the cavity causes adverse effect, in order to guarantee electrical security, certainly will to increase the size of whole cavity, from and can cause the oversize of whole terminal box, be difficult to satisfy the requirement in building integrated photovoltaic field, because, in the building integrated photovoltaic field, the size of butted line box has strict restriction, in general, in the building integrated photovoltaic field, the size of terminal box is the smaller the better.

In addition, in above-mentioned building integrated photovoltaic (BIPV) technology, the binding post that extends out from the photo-electric conversion element of solar module (welding or busbar) generally is electrically connected with conducting element formation in the terminal box by welding manner, then, seals by the encapsulating mode.

In above-mentioned terminal box, because the conducting element in the terminal box is electrically connected with the binding post of importing from solar module (welding or busbar) by welding manner, the connected mode more complicated, thereby attended operation is more time-consuming, the qualification rate and the reliability of product are reduced, and production cost is than higher.In addition, stationarity connects because welding manner forms forever, thereby solar module and separating of terminal box are not easy.

In view of there is technical problem oversize, that electrical security is not good in the Wiring module of existing building integrated photovoltaic system, be necessary in fact to propose a kind of Wiring module of novel building integrated photovoltaic system, it not only can guarantee that terminal box has less size, and can improve the electrical security of internally charged assembly.

The utility model content

The purpose of this utility model is intended to solve at least one aspect of the above-mentioned problems in the prior art and defective.

Correspondingly, one of the purpose of this utility model is to provide a kind of not only can guarantee that terminal box has reduced size, and can improve the Wiring module of building integrated photovoltaic system of the electrical security of internally charged assembly.

Another purpose of the present utility model is to provide a kind of easy for installation and dismounting to be easy to the Wiring module of building integrated photovoltaic system.

Another purpose of the present utility model is to provide a kind of and can enhances productivity and the Wiring module of the building integrated photovoltaic system of product reliability.

A purpose more of the present utility model is to provide a kind of Wiring module of the building integrated photovoltaic system of can be conveniently the intraware of appointment being changed.

According to an aspect of the present utility model, the Wiring module that it provides a kind of building integrated photovoltaic system comprises: housing, and described housing is formed with at least one cavity; And lid, described lid is used to cover the opening of described at least one cavity.Wherein, the sidewall of described lid is wrapped in the outside of the sidewall of described at least one cavity, constitutes at least a portion outer wall of described housing.

According to a preferred embodiment of the present utility model, the sidewall of described cavity is provided with cannelure, and described cannelure is around around the sidewall of described cavity; And be equipped with O-ring seal in described cannelure, described O-ring seal is clamped between the sidewall of the sidewall of described cavity and described lid.

According to another preferred embodiment of the present utility model, the front end of described lid is formed with grab, is formed with the draw-in groove that is fastened togather with described grab on the described housing.

According to another preferred embodiment of the present utility model, the front end of described lid is formed with groove, is formed with the fin that is fastened togather with described groove on the described housing.

According to another preferred embodiment of the present utility model, the rear end of described lid is formed with groove, is formed with the fin that is fastened togather with described groove on the described housing.

According to another preferred embodiment of the present utility model, described at least one cavity is formed on the rear portion of described housing, and the front portion of described housing is formed with the insertion chamber that the end with the external electric connector is plugged on.

According to another preferred embodiment of the present utility model, accommodate the internal electrical connector in described at least one cavity, described internal electrical connector comprises: diode; First conducting strip, an end of described first conducting strip is electrically connected with an end of diode, and the other end is electrically connected with an electrode of external electric connector and solar panel respectively; With second conducting strip, an end of described second conducting strip is electrically connected with the other end of diode, and the other end is electrically connected with another electrode of solar panel.

According to another preferred embodiment of the present utility model, one end of described first conducting strip is formed with first elastic contact chip, one end of described diode flexibly is clamped on described first elastic contact chip, thereby realizes being electrically connected between described diode and described first conducting strip; And an end of described second conducting strip is formed with second elastic contact chip, and the other end of described diode flexibly is clamped on described second elastic contact chip, thereby realizes being electrically connected between described diode and described second conducting strip.

According to another preferred embodiment of the present utility model, the other end of described first conducting strip is formed with first connecting plate, the busbar of an electrode of described solar panel is clamped on first connecting plate of described first conducting strip by first elastic clip, thereby realizes being electrically connected an of electrode of described first conducting strip and described solar panel; And the other end of described second conducting strip is formed with second connecting plate, the busbar of another electrode of described solar panel is clamped on second connecting plate of described second conducting strip by second elastic clip, thereby realizes being electrically connected of another electrode of described second conducting strip and described solar panel.

According to another preferred embodiment of the present utility model, be formed with many elongate grooves on the surface of at least one in described first connecting plate and second connecting plate, be used to increase the contact friction force between described busbar and the described surface.

According to another preferred embodiment of the present utility model, the other end of described first conducting strip also is formed with splicing ear, described splicing ear extends in the insertion chamber of front portion of described housing, be used for being electrically connected, thereby realize being electrically connected of described first conducting strip and described external electric connector with the splicing ear of the external electric connector that is plugged into described insertion chamber.

According to another preferred embodiment of the present utility model, described housing is formed with three cavitys, and described first conducting strip, second conducting strip and diode are separately positioned in described three cavitys.

According to another preferred embodiment of the present utility model, be formed with the buckle structure that both are fastened togather between the Wiring module of described building integrated photovoltaic system and the described external electric connector.

According to another preferred embodiment of the present utility model, described buckle structure comprises: be formed on the boss on the described external electric connector; With the opening on the housing of the Wiring module that is formed on described building integrated photovoltaic system, described opening is used for being fastened togather with described boss.

According to another preferred embodiment of the present utility model, described buckle structure comprises: be formed on the elongated raised line on the described external electric connector; With the elongate slot on the housing of the Wiring module that is formed on described building integrated photovoltaic system, described elongate slot is used for being fastened togather with described elongated raised line.

Compared with prior art, in above-mentioned each embodiment of the present utility model, because the sidewall of lid is wrapped in the outside of the sidewall of cavity, the sidewall of lid constitutes the outer wall of housing, rather than in the insertion cavity, therefore, lid does not occupy the space in the cavity, therefore, guarantee that the electric appliance component in the cavity has enough electric clearances and creepage distance, thereby improved the electrical security of internally charged assembly, simultaneously, do not needed to increase the size of terminal box.

In addition, the utility model adopts elastic clip to substitute welding manner, thereby has avoided in the prior art welding operation time-consuming, and production cost is than problem of higher, less demanding to operating procedure simultaneously, thus reduced the technology cost of building integrated photovoltaic system.In addition, owing to adopt the form of a plurality of dismountable separate units, thereby can be easily the intraware of appointment be carried out independent replacing; In addition, by adopting the elastic clip mode, avoided permanent connection the between solar module and the terminal box, thereby further made the convenient disassembly of solar module and terminal box, be convenient to the inner member of butted line box, for example the maintenance of diode, elastic clip, splicing ear and inspection.

Description of drawings

Fig. 1 is that wherein lid is in closure state according to the stereo appearance figure of the Wiring module of the building integrated photovoltaic system of the building integrated photovoltaic system in a kind of embodiment of the present utility model;

Fig. 2 is that the lid of the terminal box in the displayed map 1 is opened, and shows the relation between the sidewall of the sidewall of lid and cavity;

Fig. 3 is the exploded perspective view of the terminal box in the displayed map 1, and wherein lid is opened and shows the position and the structural relation of inner member;

Fig. 4 is the cutaway view that shows the Wiring module of the building integrated photovoltaic system in the previous embodiment, its sidewall sheath that shows lid is in the outside of the sidewall of cavity, and the busbar that shows solar panel forms with conducting strip by elastic clip and is electrically connected;

Fig. 5 is that the busbar of the solar panel among Fig. 4 forms the local enlarged diagram that is electrically connected by elastic clip with conducting strip;

Fig. 6 shows Wiring module and the interconnective schematic diagram of external electric connector according to the building integrated photovoltaic system in the previous embodiment;

Fig. 7 shows that it has specifically shown the size of creepage distance d and electric clearance g according to the cutaway view of the Wiring module of building integrated photovoltaic system of the present utility model; With

Fig. 8 shows that it has specifically shown the size of creepage distance d ' and electric clearance g ' according to the cutaway view of the Wiring module of the building integrated photovoltaic system of prior art.

Embodiment

Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.In specification, same or analogous drawing reference numeral is indicated same or analogous parts.Following explanation to the utility model execution mode is intended to overall utility model design of the present utility model is made an explanation with reference to accompanying drawing, and not should be understood to a kind of restriction of the present utility model.

Referring to Fig. 1-4, it shows the Wiring module that is used for building integrated photovoltaic system (terminal box) 100 in a kind of embodiment of the present utility model, and this terminal box 100 comprises housing 1 and lid 2.

As shown in Figure 2, in a preferred embodiment, housing 1 is formed with three cavitys 203, is used to hold electric elements, and still, the utility model is not limited to this, the quantity of cavity can also for one, two or more.Lid 2 is used to cover the opening of this cavity 203.

As shown in Figure 1 and Figure 4, the sidewall 218 of lid 2 is wrapped in the outside of the sidewall 201 of this cavity 203, and constitutes the outer wall of the latter half of housing 1.

See also Fig. 2 and Fig. 4, in a preferred embodiment, the sidewall 201 of cavity 203 is provided with cannelure 210, and this cannelure 210 is around around the sidewall 201 of cavity 203; And in cannelure 210, be equipped with O-ring seal 202.As shown in Figure 4, when lid 2 was sleeved on cavity 203 outside, this O-ring seal 202 was clamped between the sidewall 218 of the sidewall 201 of cavity 203 and lid 2.

In the preferred embodiment, O-ring seal 202 can improve the sealing between the sidewall 201 of the sidewall 218 of lid 2 and cavity 203.

As shown in Figure 2, in a further advantageous embodiment, the front end of lid 2 is formed with grab 204, is formed with the draw-in groove 205 that is fastened togather with grab 204 on the housing 1.

Simultaneously, in a preferred embodiment, please continue referring to Fig. 2, the front end of lid 2 is formed with groove 204, is formed with the fin 206 that is fastened togather with groove 204 on the housing 1.Can further increase like this between lid 2 and the housing 1 and engage power.

Further, please continue referring to Fig. 2, the rear end of lid 2 is formed with groove 208, is formed with the fin 209 that is fastened togather with groove 208 on the housing 1.

In the preferred embodiment, because lid and housing adopt dismountable mode to be assembled together mutually, therefore, dismounting is very convenient.

See also Fig. 2 and Fig. 6, in a further advantageous embodiment, cavity 203 is formed on the rear portion of housing 1, and the front portion of housing 1 is formed with the insertion chamber 101 that the end 301 with external electric connector 300 is plugged on.

In the preferred embodiment, because terminal box is plugged on removably with external electric connector 300, therefore, dismounting is very convenient, is convenient to change terminal box or external electric connector 300.

As Fig. 3 and shown in Figure 6, in another preferred present embodiment, accommodate the internal electrical connector in the cavity 203, the internal electrical connector comprises: diode 230; First conducting strip 211, an end of this first conducting strip 211 is electrically connected with an end 231 of diode 230, and the other end is electrically connected with an electrode (for example anodal) of external electric connector 300 and solar panel (not shown) respectively; With second conducting strip 221, an end of this second conducting strip 221 is electrically connected with the other end 232 of diode 230, and the other end is electrically connected with another electrode (for example negative pole) of solar panel (not shown).

More specifically, as shown in Figure 3, in another preferred present embodiment, one end of first conducting strip 211 is formed with first elastic contact chip 212, one end 231 of diode 230 flexibly is clamped on first elastic contact chip 212, thereby realizes being electrically connected between diode 230 and first conducting strip 211; And an end of second conducting strip 221 is formed with second elastic contact chip 222, and the other end 232 of diode 230 flexibly is clamped on second elastic contact chip 222, thereby realizes being electrically connected between diode 230 and second conducting strip 221.

In the preferred embodiment,, therefore, be convenient to change diode because diode is detachably mounted between two conducting strips by elastic contact chip.

As shown in Figure 3 and Figure 4, in another preferred present embodiment, the other end of first conducting strip 211 is formed with first connecting plate 213, the busbar 217 of an electrode of solar panel is introduced from the opening 216 of the bottom 1b of the housing of terminal box, and being clamped in by first elastic clip 214 on first connecting plate 213 of first conducting strip 211, thereby being electrically connected an of electrode of realizing first conducting strip 211 and solar panel.

Similarly, as shown in Figure 3 and Figure 4, the other end of second conducting strip 221 is formed with second connecting plate 223, the busbar 217 of another electrode of solar panel is clamped on second connecting plate 223 of second conducting strip 221 by second elastic clip 224, thereby realizes being electrically connected of another electrode of second conducting strip 221 and solar panel.

In the preferred embodiment,, therefore, be convenient to the connection and the dismounting of the busbar of solar panel because the busbar of solar panel is fixed on removably by elastic clip on the connecting plate of conducting strip.

As shown in Figure 5, in a further advantageous embodiment, be formed with many elongate grooves 219 on the surface of at least one in first connecting plate 213 and second connecting plate 223, be used to increase the contact friction force between busbar 217 and the surface.

In the preferred embodiment,, therefore, can effectively prevent slip and poor electric contact between busbar and the conducting strip because the frictional force between the connecting plate of busbar and conducting strip increases.

As Fig. 3 and shown in Figure 6, in a further advantageous embodiment, the other end of first conducting strip 211 also is formed with splicing ear 215, splicing ear 215 extends in the insertion chamber 101 of front portion of housing 1, be used for being electrically connected, thereby realize being electrically connected of first conducting strip 211 and external electric connector 300 with the splicing ear (not shown) that is plugged into the external electric connector 300 that inserts chamber 101.

As shown in Figure 3, first conducting strip 211, second conducting strip 221 and diode 230 are separately positioned in three cavitys of housing 1.

As shown in Figure 6, in a further advantageous embodiment, externally be formed with boss 302 on the electric connector 300, while is formed with opening 102 on the housing 1 of the Wiring module 100 of building integrated photovoltaic system, this opening 102 is used for being fastened togather with boss 302, thereby external electric connector 300 is fixed to reliably on the housing 1 of described terminal box 100.

Further, please continue referring to Fig. 6, externally be formed with elongated raised line 303 on the electric connector 300, simultaneously, on the housing 1 of the Wiring module 100 of building integrated photovoltaic system, be formed with elongate slot 103, this elongate slot 103 is used for being fastened togather with elongated raised line 303, thereby can external electric connector 300 be fixed to reliably on the housing 1 of described terminal box 100 further.

Contrast the creepage distance d ' and the electric clearance g ' of the Wiring module of the creepage distance d of Wiring module of the present utility model and electric clearance g and prior art below in detail by Fig. 7 and Fig. 8.Wherein, Fig. 7 shows that it has specifically shown the size of creepage distance d and electric clearance g according to the cutaway view of the Wiring module of building integrated photovoltaic system of the present utility model; With the cutaway view of Fig. 8 demonstration according to the Wiring module of the building integrated photovoltaic system of prior art, it has specifically shown the size of creepage distance d ' and electric clearance g '.

According to Fig. 7 and Fig. 8, can clearly be seen that, under the roughly the same situation of the size of Wiring module of the present utility model and existing Wiring module, the creepage distance d of Wiring module of the present utility model and electric clearance g are far longer than the creepage distance d ' and the electric clearance g ' of existing Wiring module.Therefore, Wiring module of the present utility model has not only improved the electrical security of internally charged assembly, simultaneously, does not need to increase the size of terminal box.

Though in conjunction with the accompanying drawings the utility model is illustrated, disclosed embodiment is intended to the utility model preferred implementation is carried out exemplary illustration in the accompanying drawing, and can not be interpreted as a kind of restriction of the present utility model.

Though some embodiment of this overall utility model design are shown and illustrate, those skilled in the art will appreciate that, under the situation of principle that does not deviate from this overall utility model design and spirit, can make a change these embodiment, scope of the present utility model limits with claim and their equivalent.

Claims

1. the Wiring module of a building integrated photovoltaic system comprises:

Housing (1), described housing (1) are formed with at least one cavity (203) that is surrounded by sidewall (201); With

Lid (2), described lid (2) is used to cover the opening of described at least one cavity (203),

It is characterized in that:

The sidewall (218) of described lid (2) wraps in the outside of the sidewall (201) of described at least one cavity (203), constitutes at least a portion outer wall of the Wiring module of described building integrated photovoltaic system.

2. the Wiring module of building integrated photovoltaic system according to claim 1 is characterized in that:

The sidewall (201) of described cavity (203) is provided with cannelure (210), and described cannelure (210) is around around the sidewall (201) of described cavity (203); And

Be equipped with O-ring seal (202) in described cannelure (210), described O-ring seal (202) is clamped between the sidewall (218) of the sidewall (201) of described cavity (203) and described lid (2).

3. the Wiring module of building integrated photovoltaic system according to claim 2 is characterized in that:

The front end of described lid (2) is formed with grab (204), is formed with the draw-in groove (205) that is fastened togather with described grab (204) on the described housing (1).

4. according to the Wiring module of claim 2 or 3 described building integrated photovoltaic systems, it is characterized in that:

The front end of described lid (2) is formed with groove (204), is formed with the fin (206) that is fastened togather with described groove (204) on the described housing (1).

5. the Wiring module of building integrated photovoltaic system according to claim 3 is characterized in that:

The rear end of described lid (2) is formed with groove (208), is formed with the fin (209) that is fastened togather with described groove (208) on the described housing (1).

6. the Wiring module of building integrated photovoltaic system according to claim 1 is characterized in that:

Described at least one cavity (203) is formed on the rear portion of described housing (1), and the front portion of described housing (1) is formed with the insertion chamber (101) that the end (301) with external electric connector (300) is plugged on.

7. according to the Wiring module of claim 1 or 6 described building integrated photovoltaic systems, it is characterized in that accommodate the internal electrical connector in described at least one cavity (203), described internal electrical connector comprises:

Diode (230);

First conducting strip (211), an end of described first conducting strip (211) is electrically connected with an end (231) of diode (230), and the other end is electrically connected with an electrode of external electric connector (300) and solar panel respectively; With

Second conducting strip (221), an end of described second conducting strip (221) is electrically connected with the other end (232) of diode (230), and the other end is electrically connected with another electrode of solar panel.

8. the Wiring module of building integrated photovoltaic system according to claim 7 is characterized in that:

One end of described first conducting strip (211) is formed with first elastic contact chip (212), one end (231) of described diode (230) flexibly is clamped on described first elastic contact chip (212), thereby realizes being electrically connected between described diode (230) and described first conducting strip (211); And

One end of described second conducting strip (221) is formed with second elastic contact chip (222), the other end (232) of described diode (230) flexibly is clamped on described second elastic contact chip (222), thereby realizes being electrically connected between described diode (230) and described second conducting strip (221).

9. the Wiring module of building integrated photovoltaic system according to claim 8 is characterized in that:

The other end of described first conducting strip (211) is formed with first connecting plate (213), the busbar (217) of an electrode of described solar panel is clamped on first connecting plate (213) of described first conducting strip (211) by first elastic clip (214), thereby realizes being electrically connected an of electrode of described first conducting strip (211) and described solar panel; And

The other end of described second conducting strip (221) is formed with second connecting plate (223), the busbar of another electrode of described solar panel (217) is clamped on second connecting plate (223) of described second conducting strip (221) by second elastic clip (224), thereby realizes being electrically connected of another electrode of described second conducting strip (221) and described solar panel.

10. the Wiring module of building integrated photovoltaic system according to claim 9 is characterized in that:

Be formed with many elongate grooves (219) on the surface of at least one in described first connecting plate (213) and second connecting plate (223), be used to increase the contact friction force between described busbar (217) and the described surface.

11. the Wiring module of building integrated photovoltaic system according to claim 10 is characterized in that:

The other end of described first conducting strip (211) also is formed with splicing ear (215), described splicing ear (215) extends in the insertion chamber (101) of front portion of described housing (1), be used for being electrically connected, thereby realize being electrically connected of described first conducting strip (211) and described external electric connector (300) with the splicing ear of the external electric connector (300) that is plugged into described insertion chamber (101).

12. the Wiring module of building integrated photovoltaic system according to claim 1 is characterized in that:

Described housing is formed with three cavitys, and described first conducting strip (211), second conducting strip (221) and diode (230) are separately positioned in described three cavitys.

13. the Wiring module of building integrated photovoltaic system according to claim 6 is characterized in that,

Be formed with the buckle structure that both are fastened togather between Wiring module of described building integrated photovoltaic system (100) and the described external electric connector (300).

14. the Wiring module of building integrated photovoltaic system according to claim 13 is characterized in that, described buckle structure comprises:

Be formed on the boss (302) on the described external electric connector (300); With

Be formed on the opening (102) on the housing (1) of Wiring module (100) of described building integrated photovoltaic system, described opening (102) is used for being fastened togather with described boss (302).

15. the Wiring module according to claim 13 or 14 described building integrated photovoltaic systems is characterized in that, described buckle structure comprises:

Be formed on the elongated raised line (303) on the described external electric connector (300); With

Be formed on the elongate slot (103) on the housing (1) of Wiring module (100) of described building integrated photovoltaic system, described elongate slot (103) is used for being fastened togather with described elongated raised line (303).