Junction box cable fixing tool and photovoltaic module

Abstract

According to the junction box cable fixing tool and the photovoltaic assembly, the fixing assembly is embedded into the frame to be kept fixed, the fixing assembly is provided with the insertion opening and the fixing cavity, so that a cable can be placed into the fixing cavity from the insertion opening or taken out of the fixing cavity, and the brush is arranged in the fixing cavity, so that the fixing assembly is more convenient to use. A cable placed in the fixing cavity can penetrate into a gap between the brushes, the brushes are used for fixing and supporting the cable, the cable is prevented from moving at will, cables of various lengths can be fixed, the cable can be pulled out of the brushes by directly pulling the other end of the cable when the cable is used, and the use is convenient. Compared with the prior art, the cable fixing device has the advantages that the short cable or the long cable can be conveniently and repeatedly fixed, adhesive residue and damage are avoided, the cost is lower, and the cable fixing device is stable and reliable.

Description

Technical Field

[0001] This application relates to the field of new energy technology, and in particular to a junction box cable fixing fixture and a photovoltaic module. Background Technology

[0002] Photovoltaic modules are devices that directly convert solar energy into electrical energy. They mainly consist of multiple photovoltaic cells (usually silicon-based cells) encapsulated in protective materials for outdoor installation and long-term use. The junction boxes and cables of photovoltaic modules are essential components ensuring the safe and efficient operation of solar photovoltaic power generation systems. They not only transmit electrical energy but also provide necessary protection against electrical faults.

[0003] Currently, cables are mainly secured using two methods: cable clips and masking tape. Cable clips have limitations, only suitable for short cables. When the length of a short cable increases to a certain point, there is a risk of it sagging. However, long cables in junction boxes are currently secured using a circular coil method. Since cable clips cannot secure long cables, the coiled cable will sag due to gravity during transportation. This sagging cable can scrape against components on the automated production line, causing damage and breakage to the cable, junction box, components, and the production line equipment.

[0004] Masking tape is for one-time bonding and fixing. Its use will increase the overall cost of component encapsulation. In addition, the adhesive layer of the tape leaves residue on the surface after bonding, which is unsightly. Cleaning it again will increase labor costs. Utility Model Content

[0005] The purpose of this application is to provide a junction box cable fixing fixture and photovoltaic module, which can conveniently and repeatedly fix short or long cables, avoid residual glue and damage, and is also lower in cost and stable and reliable.

[0006] The embodiments of this application can be implemented as follows:

[0007] In a first aspect, this utility model provides a junction box cable fixing fixture, including a fixing component and a brush. The fixing component is used to be embedded in a frame, and the fixing component has a fixing cavity and an insertion port communicating with the fixing cavity. The insertion port is used to allow the cable to enter the fixing cavity, and the brush is disposed in the fixing cavity for cable insertion.

[0008] In an optional embodiment, the fixing component includes a brush fixing member and an insert fixing member. The brush fixing member has a fixing cavity and an insertion port, and the fixing cavity extends through both sides of the brush fixing member along the width direction. The insertion port is located on one side of the brush fixing member along the length direction. The insert fixing member is connected to the other side of the brush fixing member along the length direction and is used to be inserted into the frame.

[0009] In an optional embodiment, the brush fixing member has a U-shaped structure, having a first plate portion, a connecting plate portion, and a second plate portion connected at an included angle in sequence. The connecting plate portion is connected to the insert fixing member. The first plate portion and the second plate portion are opposite to each other. The gap between the first plate portion and the second plate portion forms the fixing cavity. The insertion port is formed between the portions of the first plate portion and the second plate portion away from the connecting plate portion.

[0010] In an optional embodiment, the portions of the first plate portion and the second plate portion away from the connecting plate portion are both beveled to form two opposing beveled surfaces. The two beveled surfaces form the insertion port, and the distance between the two beveled surfaces gradually decreases from the insertion port to the fixing cavity.

[0011] And / or,

[0012] The end faces of both the first plate portion and the second plate portion away from the connecting plate portion are curved.

[0013] In an optional embodiment, the surface of the brush holder used to form the fixing cavity includes a brush fixing surface and a brush floating surface, the fixing end of the brush is fixed to the brush fixing surface, and a gap is left between the working end of the brush and the brush floating surface.

[0014] In an optional embodiment, the brush fixing member is used to form a fixing groove and a protective groove with opposite openings on the surface of the fixing cavity, the bottom of the fixing groove serves as the fixing surface of the brush, and the bottom of the protective groove serves as the floating surface of the brush.

[0015] The distance between the working end of the brush and the floating surface of the brush is less than the depth of the protective groove.

[0016] In an optional embodiment, the mounting fastener has an angled side in its height direction, and the height dimension of the mounting fastener gradually decreases from the brush fastener to the mounting fastener.

[0017] And / or,

[0018] The mounting fastener is made of an elastic material.

[0019] In an optional embodiment, the fixing component further includes a handle, the brush fixing member, the handle, and the mounting fixing member are connected in sequence, and the brush fixing member is located in the middle of the handle.

[0020] In an optional embodiment, openings are provided on both sides of the brush holder on the handle;

[0021] And / or,

[0022] Multiple screws pass sequentially through the brush holder and the handle from the fixing cavity and are locked into the mounting fastener.

[0023] Secondly, this utility model provides a photovoltaic module, including a photovoltaic cell, a junction box, cables, a frame, and a junction box and cable fixing fixture as described in any of the foregoing embodiments;

[0024] The frame is fitted around the outer edge of the photovoltaic cell, and a snap-fit ​​groove is provided between the frame and the back of the photovoltaic cell;

[0025] The junction box is installed on the back of the photovoltaic cell, one end of the cable is connected to the connector of the junction box, the fixing component is embedded in the snap-fit ​​slot, and the cable of the photovoltaic cell is inserted into the brush.

[0026] Compared with the prior art, the beneficial effects of the embodiments of this application include, for example:

[0027] The cable is secured to the frame by a fixing component. Because the fixing component has an insertion port and a fixing cavity, the cable can be inserted into or removed from the fixing cavity. The fixing cavity contains brushes, allowing the cable inserted into the cavity to pass through the gaps between the brushes. The brushes provide fixation and support for the cable, preventing it from moving freely. This method can secure cables of various lengths. When using the cable, simply pull the other end of the cable to remove it from the brushes. Therefore, compared to existing technologies, this method allows for convenient and repeated fixing of both short and long cables, avoiding adhesive residue and damage, while also being more cost-effective and reliable. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1This is a schematic diagram of the back side of a photovoltaic module with a long cable, as described in an embodiment of this application.

[0030] Figure 2 This is a schematic diagram of the back side of a photovoltaic module with short cables, as described in an embodiment of this application.

[0031] Figure 3 This is a cross-sectional schematic diagram of a photovoltaic module according to an embodiment of this application;

[0032] Figure 4 This is one of the schematic diagrams of the junction box cable fixing fixture in the embodiments of this application;

[0033] Figure 5 for Figure 4 Schematic diagram of the medium-sized brush fixing component;

[0034] Figure 6 This is a second schematic diagram of the junction box cable fixing fixture in an embodiment of this application;

[0035] Figure 7 This is the third schematic diagram of the junction box cable fixing fixture in the embodiments of this application.

[0036] Icons: 100 - Junction box cable fixing fixture; 110 - Brush fixing component; 111 - Fixing cavity; 112 - Insertion port; 113 - First plate; 1130 - Fixing groove; 1131 - Brush fixing surface; 114 - Connecting plate; 115 - Second plate; 1150 - Protective groove; 1151 - Brush floating surface; 116 - Chamfered bevel; 117 - Chamfered arc surface; 120 - Handle; 121 - Opening; 130 - Embedded fixing component; 131 - Guide bevel; 140 - Brush; 150 - Screw; 200 - Photovoltaic cell; 300 - Frame; 400 - Junction box; 500 - Cable; 600 - Snap-fit ​​groove. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0039] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0040] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not 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 on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0041] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0042] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0043] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0044] refer to Figure 1 and Figure 2 This application discloses a photovoltaic module, which includes a photovoltaic cell 200, a junction box 400, a cable 500, a frame 300, and a junction box and cable fixing fixture 100.

[0045] The frame 300 is fitted onto the outer edge of the photovoltaic cell 200, and a slot 600 is provided between the frame 300 and the back of the photovoltaic cell 200.

[0046] Junction box 400 is installed on the back of photovoltaic cell 200, and one end of cable 500 is connected to connector of junction box 400.

[0047] The junction box cable fixing fixture 100 is embedded in the card slot 600 so that the cable 500 can be inserted and fixed to avoid scratching and damage.

[0048] For details, please refer to Figure 3 and Figure 4 The junction box cable fixing fixture 100 includes a fixing component and a brush 140. The fixing component is used to be embedded in the frame 300, specifically, the fixing component is embedded in the snap-fit ​​groove 600 to fix the entire junction box cable fixing fixture 100. The fixing component has a fixing cavity 111 and an insertion port 112 communicating with the fixing cavity 111. The insertion port 112 is used to allow the cable 500 to enter the fixing cavity 111. The brush 140 is set in the fixing cavity 111 and is used to allow the cable 500 to be inserted.

[0049] In this way, the cable 500 is fixed by being embedded in the frame 300 through the fixing component. Since the fixing component is provided with an insertion port 112 and a fixing cavity 111, the cable 500 can be inserted into the fixing cavity 111 from the insertion port 112 or taken out from the fixing cavity 111. Since the fixing cavity 111 is provided with brushes 140, the cable 500 inserted into the fixing cavity 111 can pass through the gaps between the brushes 140. The brushes 140 play a role in fixing and supporting the cable 500, preventing the cable 500 from moving at will. It can fix cables 500 of various lengths. When using the cable 500, simply pull the other end of the cable 500 to pull it out from the brushes 140. Therefore, compared with the existing technology, the length of the cable 500 can be conveniently and repeatedly fixed for both short and long cables 500, avoiding residual glue and damage, and the cost is also lower, and it is stable and reliable.

[0050] In detail, the fixing components include a brush fixing member 110 and an insert fixing member 130. The brush fixing member 110 has a fixing cavity 111 and an insertion port 112. The fixing cavity 111 extends through both sides of the brush fixing member 110 along the width direction, and the insertion port 112 is located on one side of the brush fixing member 110 along the length direction. The insert fixing member 130 is connected to the other side of the brush fixing member 110 along the length direction. The insert fixing member 130 is used to be inserted into the snap-fit ​​groove 600 formed on the back of the frame 300 and the photovoltaic cell 200.

[0051] In this way, the brush fixing component 110 is provided with fixing cavities 111 that run through both sides of its width direction. The three sides of the brush fixing component 110 are open, which makes it easier to insert the cable 500. The embedded fixing component 130 connected to the brush fixing component 110 is embedded in the card slot 600 to realize the installation of the entire junction box cable fixing fixture 100.

[0052] refer to Figures 3 to 5The brush fixing member 110 has a U-shaped structure and has a first plate portion 113, a connecting plate portion 114, and a second plate portion 115 connected at an angle in sequence. The connecting plate portion 114 is connected to the embedding fixing member 130. The first plate portion 113 and the second plate portion 115 are opposite to each other. The gap between the first plate portion 113 and the second plate portion 115 forms a fixing cavity 111. An insertion port 112 is formed between the parts of the first plate portion 113 and the second plate portion 115 away from the connecting plate portion 114, which facilitates the insertion and removal of the cable 500 and its insertion into the brush 140 for fixing.

[0053] The brush holder 110 is made of high-strength polypropylene (PP) with a hardness range of 80-90 degrees. It can be manufactured using injection molding or 3D printing. Its overall length is 80-100mm, compatible with the current mainstream junction box length (400) and frame (300) distance. Its overall width is 40-60mm, compatible with the minimum inner diameter of the current mainstream cable reel (500). Its overall height is 24-29mm, compatible with various frame (300) specifications.

[0054] Both the first plate portion 113 and the second plate portion 115, away from the connecting plate portion 114, are beveled to form two opposing chamfered surfaces 116 with an angle of 30–45°. That is, the angle between the chamfered surfaces 116 and the length direction of the brush holder 110 is 30–45°. The two chamfered surfaces 116 form an insertion port 112. From the insertion port 112 to the fixing cavity 111, the distance between the two chamfered surfaces 116 gradually decreases, facilitating the insertion of the cable 500 from the insertion port 112 into the fixing cavity 111, thus serving a guiding function.

[0055] The end faces of the first plate portion 113 and the second plate portion 115 away from the connecting plate portion 114 are both rounded to form a chamfered arc surface 117. The radius of the chamfered arc surface 117 is 1 to 3 mm, which can prevent the cable from being scratched when the cable 500 is inserted, thus providing protection.

[0056] The brush holder 110 has a surface for forming the fixed cavity 111, including a brush fixing surface 1131 and a brush floating surface 1151. The fixed end of the brush 140 is fixed to the brush fixing surface 1131. A gap of 2-4 mm is left between the working end of the brush 140 and the brush floating surface 1151. That is, the distance between the working end of the brush 140 and the brush floating surface 1151 is 2-4 mm, which facilitates the deformation of the brush 140 so that the cable 500 can be inserted more quickly.

[0057] Optionally, the brush holder 110 has a fixing groove 1130 and a protective groove 1150 with opposite openings on the surface forming the fixing cavity 111. For example, the first plate portion 113 has a fixing groove 1130, and the second plate portion 115 has a protective groove 1150. The depth of the fixing groove 1130 can be 2-3 mm, and the bottom of the fixing groove 1130 serves as the brush fixing surface 1131; the depth of the protective groove 1150 can be 5-6 mm, and the bottom of the protective groove 1150 serves as the brush floating surface 1151; wherein, the distance between the working end of the brush 140 and the brush floating surface 1151 is less than the depth of the protective groove 1150.

[0058] After the fixed end of the brush 140 is fixed to the bottom of the fixed groove 1130, the working end of the brush 140 is located in the protective groove 1150, which can prevent the working end of the brush 140 from running out of the fixed cavity 111, avoid damage to the brush 140, and thus protect the brush 140.

[0059] The mounting fastener 130 is made of elastic materials such as polyurethane or rubber, with a hardness between 40 and 60. It has a certain degree of elasticity and can play a good role in fixing the module when it is inserted into the slot 600 between the frame 300 and the back of the photovoltaic cell 200. It also avoids scratches caused by friction between the back of the module and the component.

[0060] The mounting fastener 130 has an angle of 1 to 3° on one side in its height direction. That is, the mounting fastener 130 is angled away from the surface of the photovoltaic cell 200 to form a guide slope 131. The guide slope 131 forms an angle of 1 to 3° with the length direction of the brush fastener 110. From the brush fastener 110 to the mounting fastener 130, the height of the mounting fastener 130 gradually decreases, which makes it easier for the mounting fastener 130 to be inserted into the card slot 600 while providing a good fastening effect.

[0061] Combination Figure 6 and Figure 7 The fixing component also includes a handle 120, a brush fixing part 110, and an insert fixing part 130 connected in sequence. The brush fixing part 110 is located in the middle of the handle 120. When installing the fixture, you only need to hold the handle 120 and apply force to press it against the frame 300, and the insert fixing part 130 can be inserted into the snap-fit ​​groove 600. The handle 120 serves to facilitate gripping and applying force, thus facilitating installation.

[0062] The handle 120 is made of high-strength PP material with a hardness range of 80-90 degrees. It can be manufactured by injection molding or 3D printing. The length of the handle 120 is 200-250mm for easy operation. The height of the handle 120 can be consistent with the height of the brush holder 110, i.e., 24-29mm. The thickness of the handle 120 along the length of the brush holder 110 can be 8-10mm to ensure the strength of the handle 120 under stress.

[0063] Openings 121 are provided on both sides of the brush holder 110 on the handle 120. The height of the openings 121 is 12-16mm and the length is 50-60mm. This is to facilitate hand grip when the brush is fixed with both hands and to reduce the overall weight of the module.

[0064] Multiple screws 150 pass sequentially through the brush holder 110 and the handle 120 from the fixing cavity 111 and are locked into the mounting fastener 130, thereby achieving the connection and fixation of the entire fixing assembly.

[0065] In summary, the embodiments of this application disclose a junction box cable fixing fixture 100 and a photovoltaic module, which have at least the following advantages compared with the prior art:

[0066] 1. Compared to existing short cable 500 wire clip fixation methods that pose a risk of sagging and one-time adhesive tape fixation, using a fixed tool saves on the material cost of adhesive tape, avoids customer complaints caused by adhesive residue, and provides a more stable and reliable fixation.

[0067] 2. The tooling uses a brush with a certain strength and elasticity that can be repeatedly used to fix the bristles. It is compatible with both short cables (500mm) and long cables (500mm) with coils, offering better compatibility and lower cost.

[0068] 3. The tooling fixing module is made of polyurethane material with a certain degree of elasticity, which will not cause scratches or other foreign matter residue on the back of the component during the fixing process.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A junction box cable fixing fixture, characterized in that, The device includes a fixing component and a brush (140). The fixing component is used to be fitted into a frame (300), and the fixing component has a fixing cavity (111) and an insertion port (112) communicating with the fixing cavity (111). The insertion port (112) is used to allow a cable (500) to enter the fixing cavity (111). The brush (140) is disposed in the fixing cavity (111) and is used to allow the cable (500) to be inserted.

2. The junction box cable fixing fixture according to claim 1, characterized in that, The fixing assembly includes a brush fixing member (110) and an insert fixing member (130). The brush fixing member (110) has a fixing cavity (111) and an insertion port (112). The fixing cavity (111) extends through both sides of the brush fixing member (110) along the width direction. The insertion port (112) is located on one side of the brush fixing member (110) along the length direction. The insert fixing member (130) is connected to the other side of the brush fixing member (110) along the length direction. The insert fixing member (130) is used to be inserted into the frame (300).

3. The junction box cable fixing fixture according to claim 2, characterized in that, The brush holder (110) has a U-shaped structure and has a first plate portion (113), a connecting plate portion (114), and a second plate portion (115) connected at an included angle in sequence. The connecting plate portion (114) is connected to the insert holder (130). The first plate portion (113) and the second plate portion (115) are opposite to each other. The gap between the first plate portion (113) and the second plate portion (115) forms the fixing cavity (111). The insertion port (112) is formed between the portions of the first plate portion (113) and the second plate portion (115) away from the connecting plate portion (114).

4. The junction box cable fixing fixture according to claim 3, characterized in that, The portions of the first plate portion (113) and the second plate portion (115) away from the connecting plate portion (114) are both beveled to form two opposing chamfered bevels (116). The two chamfered bevels (116) form the insertion port (112). The distance between the two chamfered bevels (116) gradually decreases from the insertion port (112) to the fixing cavity (111). And / or, The end faces of the first plate portion (113) and the second plate portion (115) away from the connecting plate portion (114) are both curved.

5. The junction box cable fixing fixture according to claim 2 or 3, characterized in that, The surface of the brush fixing member (110) used to form the fixing cavity (111) includes a brush fixing surface (1131) and a brush floating surface (1151). The fixing end of the brush (140) is fixed to the brush fixing surface (1131), and a gap is left between the working end of the brush (140) and the brush floating surface (1151).

6. The junction box cable fixing fixture according to claim 5, characterized in that, The brush fixing member (110) is used to form the fixing cavity (111) with a fixing groove (1130) and a protective groove (1150) with opposite groove openings on the surface. The bottom of the fixing groove (1130) serves as the brush fixing surface (1131), and the bottom of the protective groove (1150) serves as the brush floating surface (1151). The distance between the working end of the brush (140) and the floating surface of the brush (1151) is less than the depth of the protective groove (1150).

7. The junction box cable fixing fixture according to claim 2, characterized in that, The mounting fastener (130) is angled on one side in its height direction, and the height dimension of the mounting fastener (130) gradually decreases from the brush fastener (110) to the mounting fastener (130). And / or, The mounting fastener (130) is made of an elastic material.

8. The junction box cable fixing fixture according to claim 2, characterized in that, The fixing component also includes a handle (120), the brush fixing member (110), the handle (120) and the mounting fixing member (130) are connected in sequence, and the brush fixing member (110) is located in the middle of the handle (120).

9. The junction box cable fixing fixture according to claim 8, characterized in that, The handle (120) is provided with openings (121) in the areas on both sides of the brush fixing member (110); And / or, Multiple screws (150) pass sequentially through the brush holder (110) and the handle (120) from the fixing cavity (111) and lock into the mounting fastener (130).

10. A photovoltaic module, characterized in that, Includes a photovoltaic cell (200), a junction box (400), a cable (500), a frame (300), and a junction box and cable fixing fixture as described in any one of claims 1-9; The frame (300) is fitted around the outer edge of the photovoltaic cell (200), and a snap-fit ​​groove (600) is provided between the frame (300) and the back of the photovoltaic cell (200); The junction box (400) is installed on the back of the photovoltaic cell (200), one end of the cable (500) is connected to the connector of the junction box (400), the fixing component is embedded in the snap-fit ​​groove (600), and the cable (500) of the photovoltaic cell (200) is inserted into the brush (140).

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