Junction box joint, junction box and photovoltaic module
By designing a junction box connector with an adjustment mechanism and flexible baffle, the problem of long dust prevention time of traditional junction box connectors is solved, realizing a simple dust prevention measure and improving production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 通威太阳能(盐城)有限公司
- Filing Date
- 2025-04-28
- Publication Date
- 2026-05-01
AI Technical Summary
The process of inserting dust plugs into the interface of traditional junction box connectors takes a long time, causing the transmission device to pause frequently and reducing production efficiency.
Design a junction box connector, including a housing, cable, adjustment mechanism and dustproof mechanism. The adjustment mechanism drives the moving part to move along the cable, so that multiple flexible baffles move closer to each other under the action of the limiting boss to block the interface, thereby achieving a dustproof effect without the need to frequently insert dust plugs.
It simplifies dust prevention operations, reduces downtime of transmission devices, and improves production efficiency.
Smart Images
Figure CN224191900U_ABST
Abstract
Description
Junction box connectors, junction boxes and photovoltaic modules Technical Field
[0001] This utility model relates to the field of photovoltaic technology, and in particular to a junction box connector, a junction box, and a photovoltaic module. Background Technology
[0002] After the photovoltaic module junction box is welded, it needs to undergo processes such as potting, curing, cleaning, IV testing, safety testing, and post-EL testing. Depending on the work order requirements, some work orders also require dustproof measures at the interface of the junction box connector. Figure 1 shows the structure of a traditional junction box connector, including the interface 11 of the female connector 10 and the interface 21 of the male connector 20. As shown in Figure 2, the traditional dustproof measure is to insert a dust plug 30 into the interface.
[0003] Because junction box connectors are required during IV testing, safety testing, and post-EL processing to connect to test fixtures for obtaining IV test information and powering on the post-EL process, dust prevention measures are implemented after the post-EL process. Currently, when the photovoltaic modules are transported by the transmission device to the nameplate machine, the transmission device needs to be paused, and dust plugs need to be manually removed from the dust plugs and junction box connectors, and then inserted into the interfaces. However, this method is time-consuming, resulting in prolonged downtime of the transmission device and reduced production efficiency. Summary of the Invention
[0004] Therefore, it is necessary to provide a junction box connector, a junction box, and a photovoltaic module to solve the problem of the long time required for the junction box connector to be plugged with a dust plug.
[0005] A junction box connector includes a housing, a cable, an adjustment mechanism, and a dustproof mechanism. The housing has an inner cavity and a mating interface communicating with the inner cavity. The housing has a limiting boss near the mating interface. The cable is disposed in the inner cavity. The dustproof mechanism includes a moving part and multiple flexible baffles. The moving part is disposed in the inner cavity and movably mounted on the cable. The end of the moving part near the mating interface is a connecting end. The multiple flexible baffles are respectively connected to the connecting end, and the multiple flexible baffles abut against the side wall of the inner cavity and abut against the limiting boss. The adjustment mechanism is connected to the moving part. The movement of the adjustment mechanism can drive the moving part to move along the cable, so that the multiple flexible baffles move closer together under the action of the limiting boss, thereby cooperating to block the mating interface.
[0006] In one embodiment, the flexible baffle includes a connecting portion and an extending portion, the extending portion being triangular, one side of the extending portion being connected to the connecting portion, and the connecting portion being connected to the moving component.
[0007] In one embodiment, the sum of the apex angles of the protrusions of the plurality of flexible baffles away from the connecting portion is 360°.
[0008] In one embodiment, the thickness of the flexible baffle is 0.5 mm to 0.7 mm.
[0009] In one embodiment, the number of flexible baffles is 4 to 6.
[0010] In one embodiment, the height of the limiting boss is 1mm to 1.2mm.
[0011] In one embodiment, the adjustment mechanism includes a threaded knob that is fitted onto the moving part and threadedly connected to the moving part.
[0012] In one embodiment, a guide bar is provided between the moving part and the cable to guide the moving part as it moves along the cable, the guide bar being connected to the sidewall of the inner cavity.
[0013] A junction box includes a junction box body and a junction box connector as described in any of the above embodiments, wherein the junction box connector is connected to the junction box body.
[0014] A photovoltaic module includes a photovoltaic module body and a junction box, wherein the junction box is connected to the photovoltaic module body.
[0015] Compared with traditional technologies, the above-mentioned junction box connectors, junction boxes, and photovoltaic modules have the following advantages:
[0016] When dust prevention measures are required for the aforementioned junction box connector, the adjusting mechanism moves the movable component along the cable. Due to the presence of the limiting boss, the movement direction of the flexible baffles is changed, causing multiple flexible baffles to move closer together under the action of the limiting boss, thereby cooperating to block the interface and achieve a dust prevention effect. When it is necessary to open the interface, the adjusting mechanism is operated to move the movable component in the opposite direction, which will cause the multiple flexible baffles to move away from each other.
[0017] The aforementioned junction box connectors do not require frequent insertion of dust plugs, nor do they require a large number of dust plugs. Operation is relatively simple, and the transmission device has a short or even no downtime, which helps to improve production efficiency.
[0018] The aforementioned junction box includes the aforementioned junction box connector, and the aforementioned photovoltaic module includes the aforementioned junction box, thus possessing the corresponding technical features and being able to obtain the corresponding beneficial effects. Attached Figure Description
[0019] Figure 1 is a schematic diagram of a traditional junction box connector;
[0020] Figure 2 shows a schematic diagram of a dust plug installed at the interface on the junction box connector;
[0021] Figure 3 is a schematic diagram of the structure of a junction box connector as a male end according to an embodiment of the present invention;
[0022] Figure 4 is a cross-sectional view of the junction box connector shown in Figure 3;
[0023] Figure 5 is a schematic diagram of the junction box connector shown in Figure 3 when the flexible baffles are close together;
[0024] Figure 6 is a schematic diagram of multiple flexible baffles approaching each other;
[0025] Figure 7 is a schematic diagram of the flexible baffle in the junction box connector shown in Figure 3;
[0026] Figure 8 is a schematic diagram of the junction box connector as a female head according to an embodiment of the present invention;
[0027] Figure 9 is a cross-sectional view of the junction box connector shown in Figure 8.
[0028] Explanation of reference numerals in the attached figures:
[0029] 10. Female connector; 11. Connecting interface; 20. Male connector; 21. Connecting interface; 30. Dust plug; 100. Junction box connector; 110. Housing; 111. Inner cavity; 1112. Moving cavity; 112. Connecting interface; 113. Limiting boss; 120. Cable; 130. Adjustment mechanism; 131. First thread; 140. Dustproof mechanism; 141. Moving part; 1412. Connecting end; 1414. Second thread; 142. Flexible baffle; 1422. Protrusion; 1424. Connecting part; 150. Guide bar; 160, Conductive ring; 170, Snap-fit structure; 100', Junction box connector; 110', Housing; 111', Inner cavity; 1112', Moving cavity; 112', Connecting interface; 113', Limiting boss; 120', Cable; 130', Adjustment mechanism; 131', First thread; 140', Dustproof mechanism; 141', Moving part; 1412', Connecting end; 1414', Second thread; 142', Flexible baffle; 150', Guide bar; 160', Conductive ring; 170', Snap-fit structure. Detailed Implementation
[0030] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.
[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0032] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0035] The junction box connector provided by this utility model can be either a male or a female connector. Figures 3 and 4 show a junction box connector 100 as a male connector according to one embodiment. The junction box connector 100 of this embodiment includes a housing 110, a cable 120, an adjustment mechanism 130, and a dustproof mechanism 140.
[0036] The housing 110 has an inner cavity 111 and a mating interface 112 communicating with the inner cavity 111. The housing 110 has a limiting boss 113 near the mating interface 112. The cable 120 is disposed in the inner cavity 111.
[0037] The dustproof mechanism 140 includes a movable component 141 and multiple flexible baffles 142. The movable component 141 is disposed in the inner cavity 111. The movable component 141 is movably disposed on the outer wall of the cable 120 and can move along the cable 120. The end of the movable component 141 near the interface 112 is a connection end 1412. The multiple flexible baffles 142 are respectively connected to the connection end 1412. The multiple flexible baffles 142 abut against the side wall of the inner cavity 111 and abut against the limiting boss 113.
[0038] The adjustment mechanism 130 is connected to the moving part 141. The action of the adjustment mechanism 130 can drive the moving part 141 to move along the cable 120, so that multiple flexible baffles 142 move closer to each other under the action of the limiting boss 113, thereby cooperating to block the interface 112.
[0039] As shown in Figure 5, when dust prevention measures are required for the junction box connector 100, the moving part 141 is moved along the cable 120 by operating the adjustment mechanism 130, as shown in Figure 6. Due to the presence of the limiting boss 113, the moving direction of the flexible baffle 142 is changed, causing multiple flexible baffles 142 to move closer together under the action of the limiting boss 113, thereby cooperating to block the interface 112 and achieve the dust prevention effect. When it is necessary to open the interface 112, operating the adjustment mechanism 130 causes the moving part 141 to move in the opposite direction, which moves the multiple flexible baffles 142 away from each other.
[0040] The junction box connector 100 does not require frequent insertion of dust plugs or a large number of dust plugs, making operation simpler. The transmission device has a shorter pause time, or even no pause at all, which helps to improve production efficiency.
[0041] The material of the housing 110 is, for example, but not limited to, plastic, and more specifically, for example, polyphenylene oxide (PPO).
[0042] The material of cable 120 is, for example, tin-plated brass.
[0043] There is a gap, for example, 1 to 2 mm, between the side wall of the inner cavity 111 of the housing 110 and the outer wall of the cable 120, forming a movable cavity 1112 for the movable part 141 of the dustproof mechanism 140. The length of the movable cavity 1112 is, for example, 40 mm.
[0044] The housing 110 has a limiting boss 113 near the interface 112. The limiting boss 113 is used to control the direction of the extension of the flexible baffle 142.
[0045] The height of the limiting boss 113 is, for example, 1mm to 1.2mm. In some examples, the limiting boss 113 is a ring-shaped structure.
[0046] The outer casing 110 is, for example, a column or approximately a column. The length of the outer casing 110 is, for example, 62.9 to 63.8 mm, and the width is, for example, 19.5 to 20.5 mm.
[0047] The number of flexible baffles 142 is, for example, but not limited to, 4 to 6.
[0048] As shown in Figure 7, in some examples, the flexible baffle 142 includes a connecting portion 1424 and a protruding portion 1422. The protruding portion 1422 is triangular. One side of the protruding portion 1422 is connected to the connecting portion 1424, and the connecting portion 1424 is connected to the moving member 141.
[0049] The apex angle of the protrusion 1422 that is furthest from the connecting portion 1424 is apex angle α. In some examples, the sum of the apex angles α of the plurality of flexible baffles 142 is 360°. For example, there are four flexible baffles 142, and the apex angle α of each flexible baffle 142 is 90°.
[0050] In some examples, the connecting portion 1424 is rectangular in shape. One side of the protrusion 1422 is connected to one side of the connecting portion 1424. The side of the connecting portion 1424 away from the protrusion 1422 is connected to the moving member 141. In other examples, the shape of the connecting portion 1424 is not limited to rectangular; for example, it can be trapezoidal.
[0051] In some examples, the thickness of the flexible baffle 142 is 0.5 mm to 0.7 mm.
[0052] In some examples, the flexible baffle 142 has a length of 10 mm to 15 mm and a width of 3 mm to 5 mm along the moving direction of the moving member 141.
[0053] The flexible baffle 142 is, for example, but not limited to, a plastic sheet, a metal sheet, etc. In a specific example, the flexible baffle 142 is a polyethylene terephthalate (PET) sheet.
[0054] In some examples, the moving part 141 includes multiple phase-separated rod-like structures. The moving part 141 has a length of, for example, 26 mm, a width of, for example, 3 mm, and a height of, for example, 3 mm.
[0055] In other examples, the moving part 141 may also be a one-piece structure, such as a cylindrical structure sleeved on the cable 120.
[0056] The material of the moving part 141 may be a metal such as stainless steel, a plastic such as polyphenylene ether, or a composite material.
[0057] In some examples, a guide bar 150 is provided between the moving part 141 and the cable 120 to guide the moving part 141 as it moves along the cable 120. The guide bar 150 is attached to the side wall of the inner cavity 111. There may be one or more guide bars 150. The moving part 141 is provided with a guide groove that fits into the guide bar 150. The length of the guide bar 150 and the guide groove is, for example, 10 to 15 mm, and the width is, for example, 1.5 mm to 2 mm. The height of the guide bar 150 is, for example, 1 mm to 1.5 mm. The depth of the guide groove is, for example, 1 mm to 1.5 mm.
[0058] In some examples, the adjusting mechanism 130 includes a threaded knob. The threaded knob has an inner bore. The diameter of the inner bore is, for example, 16 mm, and a first thread 131 is provided on the inner bore wall. The length of the first thread 131 in the direction of movement of the moving member 141 is, for example, 8 mm. The moving member 141 has a second thread 1414 that mates with the first thread 131. The length of the second thread 1414 in the direction of movement of the moving member 141 is, for example, 8 to 11 mm. The threaded knob is fitted onto the moving member 141 and is threadedly connected to the moving member 141. Thus, by rotating the threaded knob, the moving member 141 can be moved along the cable 120, thereby controlling the opening and closing of the flexible baffle 142. The threaded knob is at least partially exposed outside the housing 110 for ease of operation.
[0059] The material of the adjustment mechanism 130 is, for example, but not limited to, plastic, and more specifically, for example, polyphenylene ether.
[0060] In some examples, the junction box connector 100 also includes a conductive ring 160. One end of the conductive ring 160 is connected to the end of the cable 120 near the interface 112, and the other end of the conductive ring 160 is near the limiting boss 113. In this example, a flexible baffle 142 is located between the sidewall of the inner cavity 111 and the conductive ring 160.
[0061] In some examples, the housing 110 is provided with a snap-fit structure 170. The snap-fit structure 170 is, for example, a hook for snapping into a female connector.
[0062] The rated voltage of junction box connector 100 is, for example, 1200V~1500V, and the rated current is, for example, 30~40A. The specific requirements can be set according to the photovoltaic module type and efficiency.
[0063] Figures 8 and 9 illustrate a junction box connector 100' as a female connector according to one embodiment. The junction box connector 100' of this embodiment includes a housing 110', a cable 120', an adjustment mechanism 130', and a dustproof mechanism 140'.
[0064] The housing 110' has an inner cavity 111' and a mating interface 112' communicating with the inner cavity 111'. The housing 110' has a limiting boss 113' near the mating interface 112'. The cable 120' is disposed in the inner cavity 111'.
[0065] The dustproof mechanism 140' includes a movable component 141' and multiple flexible baffles 142'. The movable component 141' is disposed in the inner cavity 111'. The movable component 141' is movably disposed on the outer wall of the cable 120' and can move along the cable 120'. The end of the movable component 141' near the interface 112' is the connection end 1412'. The multiple flexible baffles 142' are respectively connected to the connection end 1412'. The multiple flexible baffles 142' abut against the side wall of the inner cavity 111' and abut against the limiting boss 113'.
[0066] The adjustment mechanism 130' is connected to the moving part 141'. The action of the adjustment mechanism 130' can drive the moving part 141' to move along the cable 120', so that multiple flexible baffles 142' move closer to each other under the action of the limiting boss 113', thereby blocking the interface 112'.
[0067] When dust prevention measures are required for the junction box connector 100', the adjusting mechanism 130' is operated to move the moving part 141' along the cable 120'. Due to the presence of the limiting boss 113', the moving direction of the flexible baffles 142' is changed, causing multiple flexible baffles 142' to move closer together under the action of the limiting boss 113', thereby cooperating to block the interface 112' and achieve a dust prevention effect. When it is necessary to open the interface 112', the adjusting mechanism 130' is operated to move the moving part 141' in the opposite direction, which will cause the multiple flexible baffles 142' to move away from each other.
[0068] The aforementioned junction box connector 100' does not require frequent insertion of dust plugs, making operation relatively simple. The transmission device has a short pause time, or even no pause at all, which helps to improve production efficiency.
[0069] In some examples, there is a guide bar 150' between the moving part 141' and the cable 120' to guide the moving part 141' as it moves along the cable 120'.
[0070] In some examples, the adjusting mechanism 130' includes a threaded knob. The threaded knob has an inner bore. A first thread 131' is provided on the wall of the inner bore. A second thread 1414' is provided on the moving part 141', which mates with the first thread 131'. The threaded knob is fitted onto the moving part 141' and is threadedly connected to the moving part 141'.
[0071] In some examples, the junction box connector 100' also includes a conductive ring 160'. One end of the conductive ring 160' is connected to the end of the cable 120' near the interface 112', and the other end of the conductive ring 160' is near the limiting boss 113'.
[0072] In some examples, the housing 110' is provided with a snap-fit structure 170'. The snap-fit structure 170' is, for example, a snap-fit hole for engaging with a male connector.
[0073] The structure of the above-mentioned components can be referenced from that of the male connector. The main difference between the female connector and the male connector is the shape of the outer shell 110', which allows them to be fitted together.
[0074] Furthermore, this utility model also provides a junction box.
[0075] One embodiment of the junction box includes a junction box body and a junction box connector of any of the above examples, the junction box connector being connected to the junction box body.
[0076] Furthermore, this utility model also provides a photovoltaic module.
[0077] One embodiment of the photovoltaic module includes a photovoltaic module body and a junction box of any of the above examples, the junction box being connected to the photovoltaic module body.
[0078] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0079] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims, and the specification can be used to interpret the content of the claims.
Claims
1. A junction box connector, characterized in that, The device includes a housing, a cable, an adjustment mechanism, and a dustproof mechanism. The housing has an inner cavity and a connection port communicating with the inner cavity. The housing has a limiting boss near the connection port. The cable is disposed in the inner cavity. The dustproof mechanism includes a moving component and multiple flexible baffles. The moving component is disposed in the inner cavity and movably mounted on the cable. The end of the moving component near the connection port is a connecting end. The multiple flexible baffles are respectively connected to the connecting end, and the multiple flexible baffles abut against the side wall of the inner cavity and abut against the limiting boss. The adjustment mechanism is connected to the moving component. The movement of the adjustment mechanism can drive the moving component to move along the cable, so that the multiple flexible baffles move closer together under the action of the limiting boss, thereby cooperating to block the connection port.
2. The junction box connector as described in claim 1, characterized in that, The flexible baffle includes a connecting portion and an extending portion. The extending portion is triangular, and one side of the extending portion is connected to the connecting portion. The connecting portion is connected to the moving component.
3. The junction box connector as described in claim 2, characterized in that, The sum of the apex angles of the protrusions of the plurality of flexible baffles that are away from the connecting portion is 360°.
4. The junction box connector as described in claim 1, characterized in that, The thickness of the flexible baffle is 0.5mm to 0.7mm.
5. The junction box connector as described in claim 1, characterized in that, The number of flexible baffles is 4 to 6.
6. The junction box connector as described in claim 1, characterized in that, The height of the limiting boss is 1mm~1.2mm.
7. The junction box connector as described in any one of claims 1 to 6, characterized in that, The adjustment mechanism includes a threaded knob, which is sleeved on the moving part and threadedly connected to the moving part.
8. The junction box connector as described in any one of claims 1 to 6, characterized in that, A guide bar is provided between the moving part and the cable to guide the moving part as it moves along the cable, and the guide bar is connected to the side wall of the inner cavity.
9. A junction box, characterized in that, It includes a junction box body and a junction box connector as described in any one of claims 1 to 8, wherein the junction box connector is connected to the junction box body.
10. A photovoltaic module, characterized in that, It includes a photovoltaic module body and the junction box as described in claim 9, wherein the junction box is connected to the photovoltaic module body.