Photovoltaic junction box

Abstract

The utility model discloses a photovoltaic junction box has the advantage that waterproof effect is good. The utility model discloses a photovoltaic junction box including upper cover, lower cover and female terminal, upper cover and lower cover are assembled and are connected, and the inner chamber of upper cover is equipped with upper butt joint part, and the top of lower cover is equipped with lower butt joint part, and upper butt joint part and lower butt joint part are opposite and set up and both together enclose a for male terminal plug -in and plug -in channel, and the plug -in channel opens in the side surface of upper cover, and upper butt joint part is equipped with upper embedded groove, and lower butt joint part is equipped with lower embedded groove, and first waterproof adhesive tape is installed to upper embedded groove, and second waterproof adhesive tape is installed to lower embedded groove, and first waterproof adhesive tape and second waterproof adhesive tape are opposite and set up, and female terminal is located in the plug -in channel, and the male terminal of insertion in plug -in channel and female terminal are opposite and dock, and first waterproof adhesive tape and second waterproof adhesive tape are pasted to the side surface of male terminal.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic accessory field especially relates to photovoltaic junction box. BACKGROUND

[0002] Photovoltaic power generation is a direct power generation mode that utilizes solar energy to make semiconductor devices effectively absorb solar radiation energy and convert it into electric energy, and is the mainstream of solar power generation today. In a solar power generation device, a photovoltaic junction box is a device for connecting a battery array and a charge control system.

[0003] The photovoltaic junction box needs to work in the external environment for a long time, so it needs good sealing performance. The sealing of the photovoltaic junction box in the prior art is mainly realized by filling with sealing glue. Since the glue filling process has high production requirements, there is a large difference in the sealing performance of the products, and it cannot be guaranteed that each photovoltaic junction box meets the sealing performance. In addition, some photovoltaic junction boxes are sealed by internally arranging a sealing rubber ring, but due to unreasonable design, sealing failure may also occur.

[0004] Therefore, there is an urgent need for a photovoltaic junction box with good waterproof effect to overcome the above-mentioned defects. SUMMARY

[0005] The utility model discloses a photovoltaic junction box with good waterproof effect.

[0006] To achieve the above-mentioned purpose, the photovoltaic junction box provided by the utility model is suitable for being installed on a photovoltaic panel and used for plugging with a male terminal, and comprises an upper cover, a lower cover and a female terminal. The upper cover and the lower cover are assembled and connected. An inner cavity of the upper cover is provided with an upper butt joint part. A top portion of the lower cover is provided with a lower butt joint part. The upper butt joint part and the lower butt joint part are arranged opposite to each other and jointly enclose a plugging channel for plugging the male terminal. The plugging channel is open on one side surface of the upper cover. The upper butt joint part is provided with an upper embedding groove. The lower butt joint part is provided with a lower embedding groove. A first waterproof rubber strip is installed on the upper embedding groove. A second waterproof rubber strip is installed on the lower embedding groove. The first waterproof rubber strip and the second waterproof rubber strip are arranged opposite to each other. The female terminal is arranged in the plugging channel. The male terminal inserted into the plugging channel is connected with the female terminal. The first waterproof rubber strip and the second waterproof rubber strip are tightly attached to the side surface of the male terminal.

[0007] Preferably, the first waterproof rubber strip and / or the second waterproof rubber strip are rubber strip structures with elasticity and bending. The end portion of the first waterproof rubber strip is arranged close to the end portion of the second waterproof rubber strip.

[0008] Preferably, the upper butt joint part is provided with an upper structure groove. The lower butt joint part is provided with a lower structure groove. The upper structure groove and the lower structure groove are connected in communication opposite to each other to form the plugging channel. The top portion of the first waterproof rubber strip is flush with the bottom portion of the upper structure groove. The top portion of the second waterproof rubber strip is flush with the bottom portion of the lower structure groove.

[0009] Preferably, the top of the lower cover is provided with a blocking catch, which is arranged at the end of the lower butt joint away from the opening of the insertion channel, and the female terminal abuts against the blocking catch.

[0010] Preferably, the top of the first waterproof adhesive tape is provided with double-sided adhesive tape, and the first waterproof adhesive tape is fixed to the upper embedding groove through the double-sided adhesive tape; and the bottom of the second waterproof adhesive tape is provided with double-sided adhesive tape, and the second waterproof adhesive tape is fixed to the lower embedding groove through the double-sided adhesive tape.

[0011] Preferably, the photovoltaic panel is arranged between the upper cover and the lower cover and is clamped by the upper cover and the lower cover.

[0012] Preferably, the upper cover and the lower cover are locked through a plurality of screws.

[0013] Preferably, the lower cover is provided with a plurality of locking through holes for the screws to pass through, the top of the lower cover is provided with an annular protrusion surrounding the locking through holes, the photovoltaic panel is provided with a positioning through hole, and the annular protrusion is inserted into the positioning through hole.

[0014] Preferably, the side of the opening of the insertion channel is provided with a clamping groove, the clamping groove is provided with a rubber plug covering the opening of the insertion channel, the rear side of the rubber plug is provided with a guide column and a plug, and the bottom of the clamping groove is provided with a guide hole for the guide column to insert into.

[0015] Preferably, the bottom of the lower cover is attached with a waterproof sticker.

[0016] Compared with the prior art, the photovoltaic junction box provided by the utility model realizes interference fit connection by arranging the first waterproof adhesive tape and the second waterproof adhesive tape in the insertion channel after the male terminal is inserted into the insertion channel, achieves good waterproof effect, realizes IP65 protection level, and greatly reduces the safety hazard of electrical short circuit caused by water entering. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a perspective view of the photovoltaic junction box of the utility model when the photovoltaic junction box is butt jointed with the male terminal.

[0018] Figure 2 is a perspective view of the photovoltaic junction box of the utility model after the rubber plug is installed in the clamping groove after the male terminal is pulled out.

[0019] Figure 3 is Figure 2 a perspective view of the photovoltaic junction box shown in the figure after the rubber plug is taken out.

[0020] Figure 4 is Figure 1 a perspective view of the photovoltaic junction box shown in the figure when the photovoltaic junction box is at another angle.

[0021] Figure 5 is Figure 1A top view of the photovoltaic junction box shown.

[0022] Figure 6 is along Figure 5 the section view after cutting along the A-A line segment in the middle.

[0023] Figure 7 is Figure 2 the perspective view of the photovoltaic junction box shown after separating the rubber plug.

[0024] Figure 8 is Figure 1 the perspective view of the photovoltaic junction and the upper cover and the lower cover after being separated.

[0025] Figure 9 is Figure 8 the further exploded perspective view of the photovoltaic junction box shown.

[0026] Figure 10 is the perspective view of the upper cover of the utility model.

[0027] Figure 11 is Figure 10 the perspective view of the upper cover shown after separating the first waterproof rubber strip.

[0028] Figure 12 is the perspective view of the lower cover of the utility model.

[0029] Figure 13 is Figure 12 the perspective view of the lower cover shown after separating the second waterproof rubber strip. DETAILED DESCRIPTION

[0030] In order to explain the technical content and structural features of the utility model in detail, the following further description is made in combination with the embodiments and the accompanying drawings.

[0031] As Figures 1 to 13 shown, the utility model discloses a kind of photovoltaic junction boxes 100, it is suitable for being installed in photovoltaic panel 200 and is used to with male terminal 300 and is connected, for realizing the interconnection of photovoltaic panel 200 and external power supply component, the power output of photovoltaic panel 200 is exported to outside.

[0032] The utility model discloses a photovoltaic junction box 100 including upper cover 10, lower cover 20 and female terminal 30, upper cover 10 is assembled with lower cover 20 and is connected, and the inner chamber of upper cover 10 is equipped with upper butt joint part 11, and the top of lower cover 20 is equipped with lower butt joint part 21, and upper butt joint part 11 and lower butt joint part 21 are set up opposite and both of them jointly enclose a for male terminal 300 plug -in plug -in channel 40, and plug -in channel 40 opens on the side surface of upper cover 10.

[0033] In the utility model, through setting first waterproof rubber strip 50 and second waterproof rubber strip 60 in plug -in channel 40, after male terminal 300 is inserted into plug -in channel 40, first waterproof rubber strip 50 and second waterproof rubber strip 60 are all pasted to the side surface of male terminal 300, realize interference fit connection, reach better waterproof effect, realize IP65 protection level, greatly reduce the security risk of electrical short circuit caused by water inlet.

[0034] It is worth pointing out that female terminal 30 is electrically connected with photovoltaic panel 200, after male terminal 300 is connected with female terminal 30, photovoltaic panel 200 is electrically connected with male terminal 300, and the electric quantity is exported.

[0035] As Figure 5 、 Figure 6 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 、 Figure 12 And Figure 13 Indicated, first waterproof rubber strip 50 and second waterproof rubber strip 60 are the rubber strip structure of elasticity and bending, and first waterproof rubber strip 50 and second waterproof rubber strip 60 can together surround the side surface of male terminal 300 a circle, provide sufficient sealing waterproof effect. More preferably, first waterproof rubber strip 50, second waterproof rubber strip 60 are silica gel strips, and both ends are bent, and the end of first waterproof rubber strip 50 is arranged in close contact with the end of second waterproof rubber strip 60. Further, the both ends of first waterproof rubber strip 50 and second waterproof rubber strip 60 are bent at 90 ° to form a small width platform at the end, and the two opposite platforms are arranged in close contact.

[0036] As Figure 6 、 Figure 10 、 Figure 11 、 Figure 12 And Figure 13As shown, the upper butt joint part 11 is provided with an upper structure groove 111, and the lower butt joint part 21 is provided with a lower structure groove 211, the upper structure groove 111 and the lower structure groove 211 are connected in communication to form a plug-in channel 40. Preferably, the upper butt joint part 11 and the lower butt joint part 21 are in a convex structure. In the embodiment provided by the utility model, the lower cover 20 is in a flat plate structure.

[0037] As shown in Figure 10 , Figure 11 , Figure 12 and Figure 13 shown, in order to avoid affecting the insertion of the male terminal 300 in the plug-in channel 40, the top of the first waterproof rubber strip 50 is flush with the bottom of the upper structure groove 111, and the top of the second waterproof rubber strip 60 is flush with the lower structure groove 211. In order to improve the installation stability of the first waterproof rubber strip 50 and the second waterproof rubber strip 60, the top of the first waterproof rubber strip 50 is provided with double-sided adhesive tape, and the first waterproof rubber strip 50 is fixed to the upper embedding groove 12 through the double-sided adhesive tape. The bottom of the second waterproof rubber strip 60 is provided with double-sided adhesive tape, and the second waterproof rubber strip 60 is fixed to the lower embedding groove 22 through the double-sided adhesive tape.

[0038] As shown in Figures 1 to 9 , the photovoltaic panel 200 is arranged between the upper cover 10 and the lower cover 20 and is clamped by the upper cover 10 and the lower cover 20 together, the photovoltaic junction box 100 is stably connected with the photovoltaic panel 200, and water on the photovoltaic panel 200 is not easy to flow into the photovoltaic junction box 100.

[0039] As shown in Figures 8 to 13 , the upper cover 10 and the lower cover 20 are locked by a plurality of screws 70. Preferably, the upper cover 10 and the lower cover 20 are locked by 4 screws 70 (but not limited to this), and the 4 screws 70 are arranged at the four corner positions of the lower cover 20, so as to strengthen the connection of the upper cover 10 and the lower cover 20. Further, the lower cover 20 is provided with a plurality of locking through holes 23 for the screws 70 to pass through, and the screws 70 pass through the locking through holes 23 to connect with the upper cover 10, so as to lock the upper cover 10 and the lower cover 20. The top of the lower cover 20 is provided with an annular protrusion 24 surrounding the locking through hole 23, the photovoltaic panel 200 is provided with a positioning through hole 201, and the annular protrusion 24 is inserted into the positioning through hole 201, so that the lower cover 20 is positioned by the photovoltaic panel 200, and displacement is avoided.

[0040] As shown in Figure 2 , Figure 3 , Figure 6 , Figure 7 , Figure 8 and Figure 9As shown, the top of the lower cover 20 is provided with a blocking catch 25, which is arranged at the end of the lower butt joint 21 away from the opening of the insertion channel 40. The female terminal 30 abuts against the blocking catch 25, and the blocking catch 25 provides positioning and limiting effect on the female terminal 30. The opening of the insertion channel 40 is provided with a clamping groove 13, which is provided with a rubber plug 80 covering the opening of the insertion channel 40. The rear side of the rubber plug 80 is provided with a guide post 81 and a plug 82. The bottom of the clamping groove 13 is provided with a guide hole 131 for the insertion of the guide post 81. After the male terminal 300 is pulled out, the rubber plug 80 is installed in the clamping groove 13, which blocks the opening of the insertion channel 40, avoids external water vapor flowing into the insertion channel 40 and the internal cavity of the photovoltaic junction box 100, and protects the female terminal 30 and the photovoltaic junction box 100. When the rubber plug 80 is installed in the clamping groove 13, the guide post 81 is inserted into the guide hole 131, which guides the installation of the rubber plug 80. The plug 82 is finally inserted into the insertion hole of the female terminal 30, which plays a role in positioning and waterproofing. When it is needed to insert the male terminal 300 into the insertion channel 40, the rubber plug 80 can be removed.

[0041] As shown in Figure 4 , Figure 6 and Figure 9 , the bottom of the lower cover 20 is provided with a waterproof sticker 90. After the upper cover 10 and the lower cover 20 are locked by the screws 70, the waterproof sticker 90 is pasted on the bottom of the lower cover 20, which can avoid water vapor flowing into the photovoltaic junction box 100 from the bottom of the lower cover 20. Preferably, the waterproof sticker 90 is made of PVC sticker, but is not limited thereto.

[0042] The above disclosure is only a preferred embodiment of the present application, which cannot limit the scope of the present application. Therefore, equivalent changes made according to the claims of the present application are all within the scope of the present application.

Claims

1. A photovoltaic junction box, suitable for installation on a photovoltaic panel and for connection to a male terminal, characterized in that: The device includes an upper cover, a lower cover, and a female terminal. The upper cover and the lower cover are assembled and connected. The upper cover has an upper mating portion in its inner cavity, and the lower cover has a lower mating portion on its top. The upper mating portion and the lower mating portion are positioned opposite each other and together form a insertion channel for inserting a male terminal. The insertion channel opens on one side of the upper cover. The upper mating portion has an upper mounting groove, and the lower mating portion has a lower mounting groove. A first waterproof adhesive strip is installed in the upper mounting groove, and a second waterproof adhesive strip is installed in the lower mounting groove. The first waterproof adhesive strip and the second waterproof adhesive strip are positioned opposite each other. The female terminal is located in the insertion channel, and the male terminal inserted into the insertion channel is connected to the female terminal. The first waterproof adhesive strip and the second waterproof adhesive strip are tightly attached to the side of the male terminal.

2. The photovoltaic junction box according to claim 1, characterized in that, The first waterproof strip and / or the second waterproof strip are elastic and flexible strip structures, with the ends of the first waterproof strip and the ends of the second waterproof strip being tightly joined together.

3. The photovoltaic junction box according to claim 1, characterized in that, The upper connecting part is provided with an upper structural groove, and the lower connecting part is provided with a lower structural groove. The upper structural groove and the lower structural groove are connected to each other to form the insertion channel. The top of the first waterproof adhesive strip is flush with the bottom of the upper structural groove, and the top of the second waterproof adhesive strip is flush with the bottom of the lower structural groove.

4. The photovoltaic junction box according to claim 1, characterized in that, The top of the lower cover is provided with a blocking hook, which is located at the end of the lower docking part away from the opening of the insertion channel, and the female terminal abuts against the blocking hook.

5. The photovoltaic junction box according to claim 1, characterized in that, The top of the first waterproof strip is provided with double-sided adhesive, and the first waterproof strip is fixed to the upper mounting groove by the double-sided adhesive. The bottom of the second waterproof strip is provided with double-sided adhesive, and the second waterproof strip is fixed to the lower mounting groove by the double-sided adhesive.

6. The photovoltaic junction box according to claim 1, characterized in that, The photovoltaic panel is positioned between the upper cover and the lower cover and is clamped together by the upper cover and the lower cover.

7. The photovoltaic junction box according to claim 1, characterized in that, The upper cover and the lower cover are locked together by multiple screws.

8. The photovoltaic junction box according to claim 7, characterized in that, The lower cover has multiple locking through holes for the screws to pass through, and the top of the lower cover has an annular protrusion surrounding the locking through holes. The photovoltaic panel has a positioning through hole, and the annular protrusion passes through the positioning through hole.

9. The photovoltaic junction box according to claim 1, characterized in that, A snap-fit ​​groove is provided on the side of the opening of the insertion channel. A rubber plug covering the opening of the insertion channel is installed in the snap-fit ​​groove. A guide post and a plug are provided on the rear side of the rubber plug. A guide hole for the guide post to be inserted is provided at the bottom of the snap-fit ​​groove.

10. The photovoltaic junction box according to claim 1, characterized in that, A waterproof sticker is affixed to the bottom of the lower cover.

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