Quick turn-off device mounting bracket, quick turn-off device assembly and solar photovoltaic system

Abstract

The utility model provides a quick turn-off device mounting bracket, which is used for connecting a quick turn-off device with a photovoltaic module, and comprises a mounting seat which is used for being fixed on the photovoltaic module and is provided with a mounting surface, and the area of the mounting surface is far smaller than that of the large surface of the quick turn-off device; and the connecting piece is used for being fixedly connected with the quick shutoff device, and the connecting piece is pivotally connected with the mounting seat. In addition, the utility model also provides a fast turn-off device assembly and a solar photovoltaic system. The area of the mounting surface of the quick turn-off device mounting bracket provided by the utility model is far smaller than that of the large surface of the quick turn-off device, so that heat is prevented from being gathered on a photovoltaic module as much as possible. Moreover, the connecting piece can drive the quick turn-off device to pivot relative to the mounting seat, so that a larger interval can be formed between the quick turn-off device and the photovoltaic module, and the heat gathered on the photovoltaic module is further reduced. Moreover, for the double-sided photovoltaic module, a smaller mounting surface can not shield the back side of the photovoltaic module as much as possible, and the utilization rate of the photovoltaic module is improved.

Description

Technical Field

[0001] This utility model relates to the field of fast shutdown device manufacturing, and more particularly to a fast shutdown device mounting bracket, as well as a fast shutdown device assembly and a solar photovoltaic system using the mounting bracket. Background Technology

[0002] A fast shutdown device is a safety device used in photovoltaic systems. It is usually installed between photovoltaic modules (also known as photovoltaic panels) or inverters to enable the rapid shutdown of the entire photovoltaic system or a single photovoltaic module in an emergency, thereby eliminating DC high voltage, reducing the risk of electric shock, and facilitating rescue and maintenance work.

[0003] Chinese utility model patent CN217469885U discloses a switch device, including a housing, a mounting bracket disposed on the housing, or an adhesive component disposed on the housing. The housing can be mounted on the frame of a photovoltaic module via the mounting bracket, or directly adhered to the photovoltaic module (on the back side) via the adhesive component. The drawback of this mounting bracket is:

[0004] 1. The mounting bracket, fast shutdown device and photovoltaic module are transported separately. After receiving the goods, the user needs to install the photovoltaic module in the predetermined location first, and then find an electrician to install the fast shutdown device on the photovoltaic module, which results in a long installation time and high labor costs.

[0005] 2. Both fast shutdown devices and photovoltaic modules are prone to overheating during use. Directly attaching the fast shutdown device to the photovoltaic module (on the back side) can cause localized overheating of the photovoltaic module, creating a safety hazard (especially in hot summer). Furthermore, as the functionality of fast shutdown devices continues to improve, the number of electronic components that need to be housed on the circuit board inside them increases, requiring a larger circuit board area. This will lead to a continuous increase in the bonding area between the fast shutdown device and the photovoltaic module, making localized overheating even more severe.

[0006] 3. Photovoltaic modules have evolved from single-sided to double-sided (able to absorb solar energy on both the front and back sides). The increasing bonding area between the fast shutdown device and the photovoltaic module will result in an excessively large area of ​​the photovoltaic module being shaded, reducing the working efficiency of the photovoltaic module.

[0007] Therefore, providing a new fast-shutdown device mounting bracket has become an urgent problem to be solved. Utility Model Content

[0008] In view of the problems existing in the background art, the first aspect of this utility model provides a fast shutdown device mounting bracket for connecting a fast shutdown device to a photovoltaic module, comprising:

[0009] A mounting base with a mounting surface for fixing onto a photovoltaic module, said mounting surface being much smaller than the area of ​​the large surface of the fast-shutdown device; and

[0010] A connector for fixed connection with the fast shut-off device, the connector being pivotally connected to the mounting base.

[0011] In some embodiments of this utility model, the photovoltaic module has a frame, and the height of the mounting base does not exceed the height of the frame.

[0012] In some embodiments of this invention, the connector is pivotable relative to the mounting base within a range of 0-90°.

[0013] In some embodiments of this utility model, the mounting base and the connector are connected by a rotating shaft. The mounting base has a clamping portion that can accommodate the rotating shaft. The clamping portion is provided with an adjusting member for adjusting the clamping tightness so that the rotating shaft can switch between a free rotation state and a fixed state.

[0014] In some embodiments of this utility model, the clamping part has a pair of clamping arms, and the adjusting member is a screw connecting the pair of clamping arms, so that the clamping arms can move closer or further apart from each other according to the rotation of the screw, thereby adjusting the clamping tightness of the clamping arms.

[0015] In some embodiments of this utility model, the connector is provided with at least a pair of circular mounting holes so that the connector can be directly mounted on the frame.

[0016] In some embodiments of this utility model, the connector is provided with at least one T-shaped mounting hole so that the connector can be directly mounted on the frame and the position of the connector relative to the frame can be adjusted.

[0017] A second aspect of this invention provides a fast shutdown device assembly, comprising:

[0018] Any of the fast-shutdown device mounting brackets described above; and

[0019] A quick-shut-off device that is fixedly connected to the connector.

[0020] In some embodiments of this utility model, the fast shutdown device assembly includes an input cable and an output cable connected to a first side of the fast shutdown device, and a second side of the fast shutdown device is fixedly connected to the connector, wherein the second side is the opposite side or adjacent side of the first side.

[0021] A third aspect of this utility model provides a solar photovoltaic system, comprising:

[0022] Photovoltaic modules with frames; and

[0023] Any of the fast shutdown components described above.

[0024] In existing technologies, due to limited transportation and / or installation space, fast-shutdown devices are directly bonded to the back of photovoltaic modules with a large surface area, rather than using other surfaces. This can lead to localized overheating of the photovoltaic modules and create safety hazards. In this invention, the mounting surface of the mounting base is much smaller than the area of ​​the large surface area, minimizing heat accumulation on the photovoltaic modules. Furthermore, the connector can pivot relative to the mounting base with the fast-shutdown device, allowing for a larger gap between the fast-shutdown device and the photovoltaic modules, further reducing heat accumulation on the modules. Moreover, for bifacial photovoltaic modules, the smaller mounting surface minimizes shading of the back of the modules, improving module utilization. Attached Figure Description

[0025] Figure 1 A perspective view of a fast shutdown device assembly provided in an embodiment of the present invention;

[0026] Figure 2 for Figure 1 The main view of the fast shutdown component shown;

[0027] Figure 3 for Figure 1 Rear view of the fast shutdown component shown;

[0028] Figure 4 for Figure 1 The right view of the fast shutdown component shown;

[0029] Figure 5a A schematic diagram of a solar photovoltaic system provided in an embodiment of the present invention (the pivot angle of the fast shutdown device is 0°).

[0030] Figure 5b for Figure 5a The diagram shows the structure of the fast shut-off device when the pivot angle is 5°.

[0031] Figure 5c for Figure 5a The diagram shows the structure of the fast shut-off device when the pivot angle is 10°.

[0032] Figure 5d for Figure 5a The diagram shows the structure of the fast shut-off device when the pivot angle is 15°.

[0033] Figure 5e for Figure 5aThe diagram shows the structure of the fast shut-off device when the pivot angle is 20°.

[0034] Figure 6 A perspective view of a fast shutdown device assembly provided in another embodiment of the present invention;

[0035] Figure 7 for Figure 6 The main view of the fast shutdown component shown;

[0036] Figure 8 for Figure 6 The right view of the fast shutdown component shown.

[0037] Explanation of reference numerals in the attached figures:

[0038] Fast shut-off device mounting bracket 10; mounting base 11; vertical part 11a; horizontal part 11b; connector 12; circular mounting hole 12a; T-shaped mounting hole 12b; rotating shaft 13; clamping part 14; clamping arms 14a, 14b; mounting surface A;

[0039] Fast shut-off switch 20; Large surface B;

[0040] Photovoltaic module 30; frame 30a;

[0041] Input cable 40;

[0042] Output cable 50. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0044] like Figure 1-4 As shown in 5a-5e, one embodiment of this utility model provides a fast shutdown device mounting bracket 10 for connecting a fast shutdown device 20 to a photovoltaic module 30. The fast shutdown device mounting bracket 10 includes a mounting base 11 with a mounting surface A for fixing on the photovoltaic module 30 and a connector 12 for fixing to the fast shutdown device 20. The connector 12 is pivotally connected to the mounting base 11. The mounting surface A is much smaller than the area of ​​the large surface B of the fast shutdown device 20.

[0045] For example, the mounting base 11 and the connector 12 are preferably made of plastic, but can also be made of non-conductive or poorly conductive metal. The housing of the fast-shutdown switch 20 is typically made of plastic.

[0046] For example, the connector 12 is plate-shaped, and one end of the connector 12 can be fixedly connected to the quick-shutdown device 20 by means of screws, bolts, adhesive, etc. The other end of the connector 12 can be pivotally connected to the mounting base 11 by means of screws, bolts, shaft connection, etc.

[0047] In this embodiment, special reference is made to Figure 1 As shown, the fast shut-off device 20 has a housing and a circuit board (not shown) disposed in the housing. Due to the continuous increase in the area of ​​existing circuit boards, the current fast shut-off device 20 is generally flat, forming a large surface B that is much larger than other surfaces.

[0048] Those skilled in the art will understand that in the prior art, due to limited transportation and / or installation space, the fast-shutdown device 20 is directly bonded to the back side of the photovoltaic module 30 with its large surface B, and cannot be bonded to the back side of the photovoltaic module 30 with other surfaces. This leads to localized overheating of the photovoltaic module 30 and creates safety hazards. In this invention, the mounting surface A of the mounting base 11 is much smaller than the area of ​​the large surface B, minimizing heat accumulation on the photovoltaic module 30. Furthermore, the connector 12 can pivot the fast-shutdown device 20 relative to the mounting base 11, allowing for a larger gap between the fast-shutdown device 20 and the photovoltaic module 30, further reducing heat accumulation on the photovoltaic module 30. Moreover, for bifacial photovoltaic modules, the smaller mounting surface A minimizes shading of the back side of the photovoltaic module, improving the utilization rate of the photovoltaic module.

[0049] Furthermore, the photovoltaic module 30 has a frame 30a, and the height of the mounting base 11 does not exceed the height of the frame 30a.

[0050] Furthermore, the connector 12 is pivotable relative to the mounting base 11 within a range of 0-90°.

[0051] In this embodiment, the mounting base 11 has a vertical portion 11a and a horizontal portion 11b. Referring specifically to FIG5, the thickness of the quick-shutdown device 20 is 23.7 mm, the height of the vertical portion 11a is 24 mm, the width of the horizontal portion 11b is 25 mm, and the height of the frame 30a is 24.5 mm. The height of the vertical portion 11a and the width of the horizontal portion 11b are slightly greater than the thickness of the quick-shutdown device 20, and the thickness of the quick-shutdown device 20 and the height of the vertical portion 11a do not exceed the height of the frame 30a.

[0052] Special reference Figures 5a-5eAs shown, after installation, when the pivot angle of connector 12 relative to mounting base 11 is 0°, the distance between the lower surface of fast shut-off device 20 and photovoltaic module 30 is 24.5mm (not exceeding the height of frame 30a), and the distance between the upper surface and photovoltaic module 30 is 0.8mm; when the pivot angle of connector 12 relative to mounting base 11 is 5°, the distance between the lower surface (lowest end) of fast shut-off device 20 and photovoltaic module 30 increases by 8.36 ... is 5°. When the angle is 10°, the distance between the lower surface (lowest end) of the fast shutdown device 20 and the photovoltaic module 30 can be increased by 16.13 mm; when the pivot angle of the connector 12 relative to the mounting base 11 is 15°, the distance between the lower surface (lowest end) of the fast shutdown device 20 and the photovoltaic module 30 can be increased by 23.74 mm; when the pivot angle of the connector 12 relative to the mounting base 11 is 20°, the distance between the lower surface (lowest end) of the fast shutdown device 20 and the photovoltaic module 30 can be increased by 31.12 mm.

[0053] Those skilled in the art will understand that the fast-shutdown mounting bracket 10 (together with the fast-shutdown device 20) provided by this invention can be directly bonded to the back of the photovoltaic module 30 at the factory, maintaining the pivot angle of the connector 12 relative to the mounting base 11 at 0°. Since the thickness of the fast-shutdown device 20 and the height of the vertical portion 11a do not exceed the height of the frame 30a, the photovoltaic modules 30 can be packaged and transported in a stacked manner. Upon arrival at the site, the operator can first install the photovoltaic module 30 at a predetermined location (e.g., on a roof), and then pivot the connector 12 (together with the fast-shutdown device 20) on the back of the photovoltaic module 30 to the desired angle. This pivotable fast-shutdown mounting bracket 10 reduces transportation costs and saves installation time and labor costs.

[0054] Alternatively, refer to Figure 6-8 As shown, another embodiment of the present invention provides a switch mounting bracket 10, wherein the mounting base 11 and the connector 12 are connected by a rotating shaft 13. The mounting base 11 has a clamping part 14 that can accommodate the rotating shaft 13. The clamping part 14 is provided with an adjusting member (not shown) for adjusting the clamping tightness so that the rotating shaft 13 can switch between a free rotation state and a fixed state.

[0055] Furthermore, the clamping part 14 has a pair of clamping arms 14a and 14b, and the adjusting member is a screw (not shown) connecting the pair of clamping arms 14a and 14b, so that the clamping arms 14a and 14b can move closer or further away from each other according to the rotation of the screw, thereby adjusting the clamping tightness of the clamping arms 14.

[0056] Those skilled in the art should understand that, Figure 1-4In the illustrated embodiment, if the pivot angle of the connector 12 relative to the mounting base 11 is to be adjusted, the screw needs to be turned from the side. When the side space is limited, it is difficult to turn the screw with a tool. Turning the screw on the front controls the pair of clamping arms 14a, 14b to move closer or further apart, and adjusts the clamping tightness of the clamping arms 14, which is more convenient.

[0057] Continue to refer to Figure 1-4 and Figure 6-8 As shown, the connector 12 is further provided with at least a pair of circular mounting holes 12a so that the connector 12 can be directly mounted on the frame 30a.

[0058] In this embodiment, the mounting hole 12a can be a threaded hole or a through hole, and the corresponding mounting position of the frame 30a is provided with a threaded hole (not shown in the figure), and the two are fixedly connected by screws.

[0059] Furthermore, the connector 12 has at least one T-shaped mounting hole 12b so that the connector 12 can be directly mounted on the frame 30a and the position of the connector 12 relative to the frame 30a can be adjusted.

[0060] In this embodiment, the T-shaped mounting hole 12b is located in the middle of a pair of circular mounting holes 12a. A threaded hole (not shown) is provided at the corresponding mounting position of the frame 30a. A screw passes through the T-shaped mounting hole 12b and secures the two together. Adjusting the position of the screw in the T-shaped mounting hole 12b adjusts the position of the connector 12 (along with the quick-shut-off device 20) relative to the frame 30a.

[0061] Those skilled in the art should understand that, depending on the user's requirements, some users allow holes to be drilled in the frame 30a. Therefore, circular mounting holes 12a and / or T-shaped mounting holes 12b can be made on the connector 12 to fix the connector 12 (along with the fast shutdown device 20) to the frame 30a. At the factory, the fast shutdown device mounting bracket 10 (along with the fast shutdown device 20) can still be directly bonded to the back side of the photovoltaic module 30, maintaining the pivot angle of the connector 12 relative to the mounting base 11 at 0°, allowing the photovoltaic modules 30 to be packaged and transported stacked. The adhesive material can be a weak adhesive or easily removable tape, nano-adhesive tape, etc., allowing users to easily remove the fast shutdown device mounting bracket 10 from the back side of the photovoltaic module 30 at the installation site and then fix it to the frame 30a with screws. If some users do not allow drilling on the frame 30a, the fast shutdown mounting bracket 10 (together with the fast shutdown 20) can be firmly bonded to the back side of the photovoltaic module 30 without the above operation. The circular mounting hole 12a and / or T-shaped mounting hole 12b on the connector 12 will not affect the use.

[0062] Continue to refer to Figure 1-4As shown, this utility model also provides a fast shutdown device assembly, including any of the fast shutdown device mounting brackets 10 as described above and a fast shutdown device 20 fixedly connected to the connector 12.

[0063] Those skilled in the art will understand that, because this fast-shutdown assembly uses the aforementioned fast-shutdown mounting bracket 10, it possesses all the technical effects brought about by the aforementioned fast-shutdown mounting bracket 10. For example, unlike in the prior art, where the fast-shutdown 20 is directly bonded to the back side of the photovoltaic module 30 with a large surface area B, thus causing localized overheating of the photovoltaic module 30 and creating a safety hazard, it is bonded to the back side of the photovoltaic module with a very small mounting surface A, minimizing heat accumulation on the photovoltaic module 30. Furthermore, the connector 12 can pivot the fast-shutdown 20 relative to the mounting base 11, allowing for a larger gap between the fast-shutdown 20 and the photovoltaic module 30, further reducing heat accumulation on the photovoltaic module 30. Moreover, for bifacial photovoltaic modules, the smaller mounting surface A minimizes obstruction of the back side of the photovoltaic module, improving the operating efficiency of the photovoltaic module.

[0064] Furthermore, the fast shutdown assembly includes an input cable 40 and an output cable 50 connected to a first side of the fast shutdown 20, and a second side of the fast shutdown 20 is fixedly connected to the connector 12, the second side being the opposite side of the first side.

[0065] Alternatively, such as Figure 6-8 As shown, the fast shutdown device assembly includes an input cable 40 and an output cable 50 connected to the first side of the fast shutdown device 20. The second side of the fast shutdown device 20 is fixedly connected to the connector 12, and the second side is the adjacent side of the first side.

[0066] Those skilled in the art should understand that the fast shutdown device 20 is fixedly connected to the connector 12 on the second side, and the input cable 40 and the output cable 50 are connected to the first side of the fast shutdown device 20. Without significantly altering the existing structure of the fast shutdown device 20, the fast shutdown device 20 can be pivoted relative to the mounting base 11, and the pivoted fast shutdown device 20 (including the input cable 40 and the output cable 50) can be kept as far away from the photovoltaic module 30 as possible, thus avoiding local overheating of the photovoltaic module 30 and potential safety hazards.

[0067] like Figures 5a-5e As shown, this utility model also provides a solar photovoltaic system, including a photovoltaic module 30 with a frame 30a and any of the fast shutdown components as described above.

[0068] Those skilled in the art will understand that, because this solar photovoltaic system employs the aforementioned fast-shutdown component, it possesses all the technical effects brought about by the aforementioned fast-shutdown component. For example, unlike in the prior art, where the fast-shutdown 20 is directly bonded to the back side of the photovoltaic module 30 with a large surface area B, potentially causing localized overheating and safety hazards, it is bonded to the back side of the photovoltaic module with a small mounting surface A, minimizing heat accumulation on the photovoltaic module 30. Furthermore, the connector 12 can pivot the fast-shutdown 20 relative to the mounting base 11, allowing for a larger gap between the fast-shutdown 20 and the photovoltaic module 30, further reducing heat accumulation on the photovoltaic module 30. Moreover, for bifacial photovoltaic modules, the smaller mounting surface A minimizes shading of the back side of the photovoltaic module, improving the module's operating efficiency.

[0069] In the description of this specification, the references to terms such as "certain embodiments," "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0070] In this utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "join," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "join" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not restrictive. Although this utility model has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solution of this utility model do not depart from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A quick disconnect mounting bracket for connecting a quick disconnect with a photovoltaic module, characterized by, include: A mounting base with a mounting surface for fixing onto a photovoltaic module, the mounting surface being much smaller than the area of ​​the large surface of the fast shutdown device; as well as A connector for fixed connection with the fast shut-off device, the connector being pivotally connected to the mounting base.

2. The fast-shutdown device mounting bracket according to claim 1, characterized in that: The photovoltaic module has a frame, and the height of the mounting base does not exceed the height of the frame.

3. The fast-shutdown device mounting bracket according to claim 1, characterized in that: The connector is pivotable relative to the mounting base within a range of 0-90°.

4. The fast-shutdown device mounting bracket according to claim 1, characterized in that: The mounting base is connected to the connector by a pivot. The mounting base has a clamping part that can accommodate the pivot. The clamping part is provided with an adjusting member for adjusting the clamping tightness so that the pivot can switch between a free rotation state and a fixed state.

5. The fast-shutdown device mounting bracket according to claim 4, characterized in that: The clamping part has a pair of clamping arms, and the adjusting member is a screw connecting the pair of clamping arms so that the clamping arms can move closer or further apart from each other according to the rotation of the screw, thereby adjusting the clamping tightness of the clamping arms.

6. The fast-shutdown device mounting bracket according to claim 2, characterized in that: The connector has at least one pair of circular mounting holes so that it can be directly mounted on the frame.

7. The fast-shutdown device mounting bracket according to claim 2, characterized in that: The connector has at least one T-shaped mounting hole so that the connector can be directly mounted on the frame and the position of the connector relative to the frame can be adjusted.

8. A fast shutdown device assembly, characterized in that, include: Fast shutdown device mounting bracket as described in any one of claims 1-7; and A quick-shut-off device that is fixedly connected to the connector.

9. The fast shutdown assembly according to claim 8, characterized in that, include: The input cable and output cable are connected to the first side of the fast shut-off device, and the second side of the fast shut-off device is fixedly connected to the connector. The second side is the opposite side or adjacent side of the first side.

10. A solar photovoltaic system, characterized in that, include: Photovoltaic modules with frames; as well as The fast shutdown assembly as described in claim 8 or 9.

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