Photovoltaic junction box

Abstract

The utility model discloses a photovoltaic junction box, which comprises a box body and a cover plate clamped on the box body, a current-conducting plate is arranged in the box body, a diode is arranged on the current-conducting plate, a guide groove used for placing a bus bar is formed at the bottom of the box body, the guide groove is provided with a guide section which is folded upwards, and the guide section is provided with a guide hole. And the guide section extends upwards to form a supporting part for supporting the conductive plate.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic junction boxes, in particular to a photovoltaic junction box. Background Art

[0002] Existing photovoltaic junction boxes are generally composed of the following parts: a base, a conductive component, a diode, a sealing ring, a sealing silicone, a box cover, etc., and are divided into glue-filled type and non-glue-filled type according to safety performance requirements.

[0003] In the existing glue-filled photovoltaic junction box, glue needs to be injected into the inside of the junction box, but the existing photovoltaic junction box lacks guidance for the bus bar, resulting in the bus bar being unable to be smoothly inserted, and the junction box lacks support for the conductive components, which can easily cause deformation of the conductive components during the diode welding process, causing quality risks. Utility Model Content

[0004] In order to solve the technical problems existing in the background technology, the utility model proposes a photovoltaic junction box.

[0005] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0006] A photovoltaic junction box comprises a box body and a cover plate clamped on the box body, wherein a conductive plate is arranged in the box body, a diode is arranged on the conductive plate, a guide groove is formed at the bottom of the box body for inserting a bus bar, and the guide groove has a guide section that gathers upward, and the guide section extends upward to form a supporting portion for supporting the conductive plate.

[0007] Preferably, a connection gap is formed between the conductive plate and the diode, and the guide groove is arranged opposite to the connection gap. Through the above improvement, the bus bar can be inserted from the guide groove, and since the connection gap and the guide groove are arranged opposite to each other, the bus bar can be directly inserted into the connection gap to cooperate with the conductive plate and the diode, which is more convenient for welding.

[0008] Preferably, the guide grooves are connected and provided with a glue inlet hole arranged opposite to the bottom of the diode. Through the above improvements, glue can flow into the box body from the gap between the conductive plate and the box body, and as the glue is continuously injected, the glue can flow from the glue inlet hole to the bottom of the diode, thereby filling the area at the bottom of the diode, avoiding gaps in the glue around the diode, thereby affecting the heat dissipation of the diode, and improving the stability of the diode.

[0009] Preferably, the bottom of the box body is provided with exhaust ports arranged opposite to the two ends of the conductive plate, and the guide section is provided with a connecting groove, which connects the exhaust port and the guide groove to form a flow channel. Through the above improvements, as the glue can flow into the box body from the gap between the conductive plate and the box body, the exhaust port can discharge the air inside the box body to avoid bubbles in the glue, and as the glue is continuously placed, the glue can flow into the guide groove through the connecting groove, so that the entire box body is filled with glue, thereby improving the quality of glue filling.

[0010] Preferably, guide slopes are formed on both sides of the guide groove. Through the above improvements, during the insertion of the busbar from the bottom of the box body, the guide slopes can guide the busbar, so that the busbar can be inserted into the box body more smoothly.

[0011] Preferably, the guide slope is provided with a glue passing port. Through the above improvements, during the glue filling process, the glue can enter the bottom of the diode through the glue passing port, thereby increasing the glue flow rate, avoiding uneven glue flow, and improving the glue filling efficiency.

[0012] Preferably, a support column is formed in the box body, an abutment platform is formed on the support column, the conductive plate is sleeved on the support column, the abutment platform abuts against the conductive plate, a groove is formed on the conductive plate, and the groove is located between the abutment platform and the support portion. Through the above improvements, the abutment platform and the support portion abut against the bottom of the conductive plate, which greatly improves the structural strength of the conductive plate, and the groove on the conductive plate can reduce the cross-sectional area of ​​the object, increase the bending stiffness and compressive strength of the conductive plate, thereby improving the strength and stability of the conductive plate.

[0013] Preferably, the support column partially extends out of the conductive plate to form an indicator, and one indicator has different shapes. Through the above improvement, by setting the indicator of different shapes, the direction of the conductive plate installation is ensured, the diode is prevented from being installed upside down, and a foolproof effect is played.

[0014] Preferably, the box body is formed with snap-on protrusions on both sides, the cover plate is formed with a snap-on groove for the snap-on protrusion to be placed in, the cover plate is formed with snap-on ribs, and the box body is formed with a fixing groove for the snap-on ribs to be placed in. Through the above improvements, during the installation of the cover plate, the snap-on protrusions on both sides of the box body will be placed in the snap-on grooves of the cover plate, thereby realizing the rapid installation of the cover plate, and during the installation process, the snap-on ribs on the cover plate will be snapped into the fixing grooves of the box body, thereby improving the stability of the cover plate installation.

[0015] Preferably, a clamping block extends from the end of the box body, and a wire clamping groove is formed on the clamping block. Through the above improvement, the wire clamping groove can be used to clamp the wire, which can avoid the shaking of the joint during transportation and improve the stability during transportation.

[0016] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0017] A guide groove for inserting the bus bar is formed at the bottom of the box body, which can provide guidance for the bus bar, greatly improving the smoothness of the bus bar insertion, and the guide section of the guide groove extends upward to form a supporting part, which supports the bottom of the conductive plate to avoid depression of the conductive plate during the welding of the diode, thereby improving the structural strength of the conductive plate during the welding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure inside the box body of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the bottom of the box body of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the cover plate of the utility model;

[0022] Figure 5 It is a structural schematic diagram of the box body of the utility model;

[0023] Figure 6 It is a schematic diagram of the structure of the conductive plate and the diode of the utility model;

[0024] Figure 7 It is a cross-sectional view of the whole of the utility model;

[0025] In the figure: 1, box body; 2, cover plate; 3, conductive plate; 4, diode; 5, guide groove; 6, guide section; 7, support part; 101, connection gap; 102, glue inlet hole; 103, exhaust port; 104, connecting groove; 105, guide slope; 106, glue outlet; 107, flow channel; 201, support column; 202, abutment platform; 203, groove; 204, indicator; 301, clamping convex part; 302, clamping groove; 303, clamping rib; 304, fixing groove; 305, clamping block; 306, clamping groove; 307, electrical connection cavity; DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] It should be understood that although the terms upper, middle, lower, top, end, etc. appear in this article to describe various elements, these elements are not limited by these terms. These terms are only used to distinguish elements from each other for easy understanding, and are not used to define any direction or order limitation.

[0028] like Figure 1-7 As shown, a photovoltaic junction box includes a box body 1 and a cover plate 2 snapped onto the box body 1, a conductive plate 3 is arranged inside the box body 1, a diode 4 is arranged on the conductive plate 3, a guide groove 5 for inserting a bus bar is formed at the bottom of the box body 1, and the guide groove 5 has an upwardly contracted guide section 6, and the guide section 6 extends upwardly to form a supporting portion 7 for supporting the conductive plate 3.

[0029] Specifically, the guide groove 5 can provide guidance for the busbar, greatly improving the smoothness of the busbar placement process, and the guide section 6 of the guide groove 5 forms a support portion 7 upward, and the support portion 7 supports the bottom of the conductive plate 3 to avoid the conductive plate 3 from being dented during the welding process of the diode 4, thereby improving the structural strength of the conductive plate 3 during the welding process.

[0030] like Figure 2 , Figure 3 As shown, further explanation of the implementation method of the guide groove 5 in this embodiment is provided. Since a connection gap 101 for inserting the bus bar is formed between the conductive plate 3 and the diode 4, and the guide groove 5 and the connection gap 101 are arranged opposite to each other, when the bus bar is inserted into the guide groove 5, the bus bar will pass through the guide groove 5 and be inserted into the connection gap 101, and the conductive plate 3 and the diode 4 will be connected, which makes it easier to install and weld the bus bar.

[0031] Specifically, the guide grooves 5 are connected to each other and are provided with a glue inlet hole 102 arranged opposite to the bottom of the diode 4. During the process of injecting glue from top to bottom, the glue can flow into the interior of the box body 1 from the gap between the conductive plate 3 and the box body 1. As the glue is continuously injected, the glue at the bottom will gradually increase. The glue can enter the space at the bottom of the wire board 3 and the diode 4 through the glue inlet hole 102, filling the area at the bottom of the diode 4 and the wire board 3, avoiding gaps in the glue around the diode 4, thereby affecting the heat dissipation of the diode 4 and improving the stability of the diode 4.

[0032] The bottom of the box body 1 is provided with an exhaust port 103 which is arranged opposite to the two ends of the conductive plate 3, and a connecting groove 104 is provided on the guide section 6. The connecting groove 104 connects the exhaust port 103 and the guide groove 5 to form a flow channel 107. As the glue is continuously injected, the air inside the box body 1 can be discharged from the exhaust port 103 to avoid bubbles in the glue and affect the glue filling effect. The glue can flow into the guide groove 5 through the connecting groove 104 and fill the empty position upward through the guide groove 5, so that the box body 1 is filled with glue, which greatly improves the glue filling effect.

[0033] Preferably, a guide slope 105 is formed on the peripheral side of the guide groove 5 , and the guide slope 105 can guide the bus bar so that the bus bar can enter the box body 1 more smoothly.

[0034] like Figure 7 As shown, a glue passing port 106 is formed on the guide inclined surface 105. As the glue is continuously injected, the glue in the guide groove 5 can enter the internal space through the glue passing port 106, further improving the filling effect.

[0035] like Figure 2 , Figure 5 , Figure 6 As shown, as a further explanation of the installation implementation method of the conductive plate 3 in this embodiment, a support column 201 is formed in the box body 1, and an abutment platform 202 is formed on the support column 201. The conductive plate 3 is sleeved on the support column 201, so that the abutment platform 202 abuts against the conductive plate 3, and the abutment platform 202 and the supporting portion 7 abut against the bottom of the conductive plate 3, which greatly improves the structural strength of the conductive plate 3.

[0036] Among them, a groove 203 is also formed on the conductive plate 3, and the groove 203 is located between the abutment platform 202 and the support portion 7. The groove 203 on the conductive plate 3 can reduce the cross-sectional area of ​​the object, increase the bending stiffness and compressive resistance of the conductive plate 3, thereby improving the strength and stability of the conductive plate 3.

[0037] Preferably, the support column 201 partially extends out of the conductive plate 3 to form an indicating portion 201, and an indicating portion 204 has different shapes, wherein one indicating portion 201 can be set to be square and the other three can be set to be circular, to prevent fooling around and ensure the installation direction of the conductive plate 3 to avoid reverse installation of the diode 4.

[0038] like Figure 4 , Figure 5 As shown, further explanation of the cooperation between the box body 1 and the cover plate 2 in this embodiment is provided. A snap-fitting protrusion 301 is formed on both sides of the box body 1, and a slot 302 for inserting the snap-fitting protrusion 301 is formed on the cover plate 2. During the installation process of the cover plate 2, the snap-fitting protrusion 301 on both sides of the box body 1 will be inserted into the slot 302 of the cover plate 2, thereby realizing the quick installation of the cover plate 2.

[0039] Among them, a snap-fitting rib 303 is formed on the cover plate 2, and a fixing groove 304 for inserting the snap-fitting rib 303 is formed on the box body 1. During the installation process, the snap-fitting rib 303 on the cover plate 2 will be inserted into the fixing groove 304 of the box body 1, thereby improving the installation stability of the cover plate 2.

[0040] Preferably, a clamping block 305 extends from the end of the box body 1, and a wire clamping groove 306 is formed on the clamping block 305. The wire clamping groove 306 can be used to clamp the wire, which can avoid shaking of the connector during transportation and improve stability during transportation.

[0041] In some other embodiments, the guide groove 5 can be used as a glue pouring groove, and glue can be poured from the bottom so that the inside of the box body 1 is filled with glue.

[0042] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A photovoltaic junction box, comprising a box body (1), and a cover plate (2) snapped onto the box body (1), characterized in that: A conductive plate (3) is arranged in the box body (1), a diode (4) is arranged on the conductive plate (3), a guide groove (5) for inserting a bus bar is formed at the bottom of the box body (1), the guide groove (5) has a guide section (6) that is gathered upward, and the guide section (6) extends upward to form a supporting portion (7) that supports the conductive plate (3).

2. A photovoltaic junction box according to claim 1, characterized in that: A connection gap (101) is formed between the conductive plate (3) and the diode (4), and the guide groove (5) is arranged opposite to the connection gap (101).

3. A photovoltaic junction box according to claim 1, characterized in that: The guide grooves (5) are connected to each other and are provided with a glue inlet hole (102) arranged opposite to the bottom of the diode (4).

4. A photovoltaic junction box according to claim 1, characterized in that: The bottom of the box body (1) is provided with an exhaust port (103) arranged opposite to the two ends of the conductive plate (3), and the guide section (6) is provided with a connecting groove (104), the connecting groove (104) connecting the exhaust port (103) and the guide groove (5) to form a flow channel (107).

5. A photovoltaic junction box according to claim 1, characterized in that: Guide slopes (105) are formed on both sides of the guide groove (5).

6. A photovoltaic junction box according to claim 5, characterized in that: The guide inclined surface (105) is provided with a glue passing port (106).

7. A photovoltaic junction box according to claim 1, characterized in that: A plurality of support columns (201) are formed in the box body (1), an abutment platform (202) is formed on the support column (201), the conductive plate (3) is sleeved on the support column (201), the abutment platform (202) abuts against the conductive plate (3), a groove (203) is formed on the conductive plate (3), and the groove (203) is located between the abutment platform (202) and the support portion (7).

8. A photovoltaic junction box according to claim 7, characterized in that: The support column (201) partially extends out of the conductive plate (3) to form an indicating portion (204), and one indicating portion (204) has a different shape.

9. The photovoltaic junction box according to claim 1, characterized in that: The box body (1) is formed with clamping protrusions (301) on both sides, the cover plate (2) is formed with a clamping groove (302) for the clamping protrusion (301) to be inserted into, the cover plate (2) is formed with a clamping rib (303), and the box body (1) is formed with a fixing groove (304) for the clamping rib (303) to be inserted into.

10. The photovoltaic junction box according to claim 1, characterized in that: A clamping block (305) extends from the end of the box body (1), and a wire clamping groove (306) is formed on the clamping block (305).

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