Photovoltaic module cable fixing device and photovoltaic power station

Abstract

The utility model discloses a kind of photovoltaic module cable fixing device and photovoltaic power station, wherein cable fixing device includes the fixed seat for being fixed with photovoltaic module frame and the cable holder connected with fixed seat, the cable holder includes cable fixing disc and clamping component, the cable fixing disc is equipped with the cable fixing groove for clamping cable, the clamping component is equipped with the clamping part of clamping cable fixing disc, the clamping part clamps cable fixing disc, and cable fixing groove clamps cable. The utility model can reliably fix photovoltaic cable, reduce the operation and maintenance cost of photovoltaic power station.

Description

Technical Field

[0001] This utility model belongs to the field of photovoltaic technology, specifically relating to a photovoltaic module cable fixing device. Background Technology

[0002] In photovoltaic (PV) power generation systems, the reliability of the string lead cables (PV lead wires) directly affects the long-term stability of the system. Traditional installation methods typically involve laying PV cables along the outside of the frame or the back of the modules and securing them with cable ties. However, the high temperature and humidity environment accelerates the brittleness of these cable ties, increasing the breakage risk to over 60% within 3-5 years (according to IEC 62788-7 test data), causing significant inconvenience to the operation and maintenance of PV power plants. Utility Model Content

[0003] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a photovoltaic module cable fixing device and a photovoltaic power station, wherein the cable fixing device is fixed to the photovoltaic module and reliably fixes the photovoltaic cable.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] First, a photovoltaic module cable fixing device is provided, including a fixing base for fixing to the frame of the photovoltaic module and a cable clamp connected to the fixing base. The cable clamp includes a cable fixing plate and a clamping component. The cable fixing plate is provided with a cable fixing groove for clamping the cable. The clamping component is provided with a clamping part for clamping the cable fixing plate. The clamping part clamps the cable fixing plate and causes the cable fixing groove to clamp the cable.

[0006] Preferably, the clamping component includes two clamping arms and an elastic element. The two clamping arms are cross-hinged at the middle part by a pin. The front parts of the two clamping arms cooperate to form a clamping part for clamping the cable fixing disc. The clamping part is provided with a clamping groove that matches the shape of the cable fixing disc. The elastic element is used to drive the two clamping arms to rotate.

[0007] Preferably, the fixed base is provided with two sliding grooves, and the rear of the two clamping arms is provided with controllable operating parts. When operated, the rear ends of the two operating parts slide along the two sliding grooves respectively, so as to realize the relative rotation of the two clamping arms.

[0008] Preferably, the fixing seat has a fixing plate between the two sliding grooves, and two elastic elements are respectively disposed between the fixing plate and the rear ends of the two operating parts.

[0009] Preferably, the elastic element is a tension spring; and / or, the rear end of the operating part is provided with a T-shaped slider that cooperates with the slide groove.

[0010] Preferably, the cable fixing plate has a radial expansion joint in the middle, with one end open and the other end closed, and the opening faces the front of the two clamping arms. At least two cable fixing grooves are provided on both sides of the expansion joint and communicate with the expansion joint through gaps.

[0011] Preferably, the front of the two clamping arms is provided with hooks that engage with the opening of the expansion joint.

[0012] Preferably, the cable retaining disc is made of a flexible insulating material; and / or, the cable retaining disc and the clamping component are integrated.

[0013] Preferably, the mounting base is provided with a slot for engaging and fixing with the frame of the photovoltaic module.

[0014] In addition, a photovoltaic power station is provided, including photovoltaic modules, the frame of which is connected to the aforementioned cable fixing device.

[0015] The present invention adopts the above technical solution and has the following beneficial effects:

[0016] 1. The photovoltaic module cable fixing device includes a fixing base for fixing to the photovoltaic module frame and a cable clamp connected to the fixing base. The fixing base fixes the fixing device to side B of the photovoltaic module frame, and the cable clamp is used to clamp the cable. The cable clamp includes a cable fixing disc and a clamping component. The cable fixing disc has a cable fixing groove for clamping the cable, and the clamping component has a clamping part for clamping the cable fixing disc. The cable fixing groove of the cable fixing disc is used to place the photovoltaic DC cable and play a fixing role. The clamping component can open and close the clamping part. When the clamping part is open, it facilitates the entry of the photovoltaic cable. When the clamping part is closed, it fixes the cable in the cable fixing groove. Therefore, it can reliably fix the photovoltaic cable, reduce the operation and maintenance cost of photovoltaic power plants, help photovoltaic companies increase efficiency and revenue, and promote the further development of the photovoltaic industry.

[0017] 2. To facilitate operation and ensure reliable cable fixation, the clamping component includes two clamping arms and an elastic element. The two clamping arms are hinged together at the middle via a pin. The front parts of the two clamping arms cooperate to form a clamping part for clamping the cable fixing disc. The clamping part has a clamping groove that matches the shape of the cable fixing disc. The elastic element drives the two clamping arms to rotate and closes the clamping groove. The elastic element is a tension spring, with two tension springs correspondingly located between the fixed plate and the rear ends of the two operating parts. The cable clamp opens and closes by stretching and returning the springs. Specifically, stretching opens the cable clamp, and returning the springs closes it, maintaining the cable clamp in a closed state under normal conditions.

[0018] 3. The mounting base is provided with two sliding grooves, and the rear of the two clamping arms is provided with controllable operating parts. When operated, the rear ends of the two operating parts slide along the two sliding grooves to realize the relative rotation of the two clamping arms. When installing the cable, the operating parts at the rear of the two clamping arms are opened in a controlled manner, opening the clamping parts. The photovoltaic DC cable led out from the string is first covered with a protective tube to prevent ultraviolet damage, and then enters the cable fixing groove through the opened channel of the clamping groove. Then, the two operating parts are released, the tension spring is reset, and the clamping parts are closed, fixing the cable in the cable fixing groove and protecting the cable from falling off.

[0019] 4. The rear end of the operating unit is provided with a T-shaped slider that mates with the slide groove. In this way, the T-shaped slider and the slide groove will not separate after being combined. The slide groove guides the T-shaped slider to slide, and also connects the fixing base and the cable clamp into a whole.

[0020] 5. The cable fixing plate is provided with an expansion joint in the middle of the radial direction, which is open at one end and closed at the other end. At least two cable fixing grooves are provided on both sides of the expansion joint. Therefore, when the clamping part clamps the cable fixing plate, the expansion joint narrows and the gap also becomes smaller. The cable fixing grooves contract, thereby clamping the cable in the cable fixing grooves.

[0021] In addition, the front of the two clamping arms is equipped with hooks that can extend into the expansion joint opening and cooperate with it. When the front of the two clamping arms is opened, the expansion joint can be expanded to facilitate the placement of cables and the separation of cables from the cable clamps.

[0022] 6. Since the cable retainer is made of flexible insulating material, it can protect the cable from having its insulation layer cut and provide insulation protection.

[0023] 7. In order to fix the cable fixing device to the photovoltaic module, the fixing base is provided with a slot that engages and fixes with the frame of the photovoltaic module. The slot can be designed as a rectangular slot and can be interference-fitted to side B of the frame of the photovoltaic module.

[0024] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description

[0025] The utility model will be further described below with reference to the accompanying drawings:

[0026] Figure 1 This is a schematic diagram of the cable fixing device of this utility model installed on the frame of a photovoltaic module;

[0027] Figure 2 This is a schematic diagram of the cable fixing device in one embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of the fixing base in this utility model;

[0029] Figure 4 This is a schematic diagram of the cable clamp in this utility model;

[0030] Figure 5 This is a schematic diagram of the cable fixing device in one embodiment of the present invention;

[0031] Reference numerals: 1-Photovoltaic module, 2-Cable fixing device, 21-Fixing base, 211-Card slot, 212-Slide groove, 213-Fixing plate, 214-Tightening screw, 22-Cable clamp, 23-Cable fixing disc, 231-Cable fixing groove, 232-Expansion joint, 233-Gap, 24-Clamping arm, 241-Clamping groove, 242-Hook, 243-Operating part, 244-T-slider, 25-Pin, 26-Elastic element, 27-Spring positioning seat, 28-Spring positioning rod. Detailed Implementation

[0032] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.

[0033] Those skilled in the art will understand that, without conflict, the features in the following embodiments and implementations can be combined with each other.

[0034] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. For example, terms such as "upper," "lower," "front," and "rear," which indicate orientation or positional relationship, are based solely on the orientation or positional relationship shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device / component referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0037] like Figures 1 to 4 As shown, this utility model provides a photovoltaic module cable fixing device 2, including a fixing base 21 for fixing to the frame of the photovoltaic module 1 and a cable clamp 22 connected to the fixing base 21. The cable clamp 22 includes a cable fixing plate 23 and a clamping component. The cable fixing plate 23 is provided with a cable fixing groove 231 for clamping the cable. The clamping component is provided with a clamping part for clamping the cable fixing plate. The clamping part clamps the cable fixing plate 23 and causes the cable fixing groove 231 to clamp the cable.

[0038] In the above technical solution, the fixing device 2 is fixed to the B side of the photovoltaic module frame by the fixing base 21. The cable clamp 22 is used to clamp the cable, and the cable fixing groove 231 of the cable fixing plate is used to place the photovoltaic DC cable and play a fixing role. The clamping part can be opened and closed. When the clamping part is open, it is convenient for the photovoltaic cable to enter. When the clamping part is closed, it fixes the cable in the cable fixing groove. Therefore, the photovoltaic cable can be reliably fixed, reducing the operation and maintenance cost of photovoltaic power station, helping photovoltaic enterprises to increase efficiency and revenue, and promoting the further development of the photovoltaic industry.

[0039] In this embodiment, the clamping component includes two clamping arms 24 and an elastic element. The two clamping arms 24 are cross-hinged at the middle by a pin 25. The front parts of the two clamping arms cooperate to form a clamping part for clamping the cable fixing disc. The clamping part is provided with a clamping groove 241 that matches the shape of the cable fixing disc. The elastic element is used to drive the two clamping arms 24 to rotate and close the clamping part. The elastic element 26 is a tension spring. The fixed base 21 is provided with two sliding grooves 212. The rear part of the two clamping arms is provided with a controllable operating part 243. When operated, the rear ends of the two operating parts slide along the two sliding grooves to realize the relative rotation of the two clamping arms. The fixed base 21 is provided with a fixed plate 213 between the two sliding grooves 212. The two tension springs are respectively located between the fixed plate and the rear ends of the two operating parts. By stretching and resetting the tension spring, the cable clamp can be opened and closed. Specifically, stretching is used to open the cable clamp; resetting the tension spring completes the closing action of the cable clamp. The tension of the spring keeps the cable clamp in a closed state under normal conditions. Of course, it is understandable that a high-strength tension spring can be used to ensure sufficient clamping force.

[0040] When installing the cable, the operating parts at the rear of the two clamping arms open in a controlled manner, opening the clamping parts. The photovoltaic DC cable led out from the string is first covered with a protective tube to prevent UV damage, and then enters the cable fixing groove through the channel opened in the clamping groove. Then, the two operating parts are released, the tension spring is reset, and the clamping parts are closed, fixing the cable in the cable fixing groove and protecting the cable from falling off.

[0041] Furthermore, spring positioning seats 27 for the ends of the positioning springs can be provided at the rear end of the operating unit and on the fixed plate. A spring positioning rod 28 is connected to the spring positioning seats at the rear end of the operating unit and the fixed plate respectively. The two spring positioning rods 28 are in a movable telescopic cooperation, which can not only position the spring, but also telescopically follow the stretching and resetting of the spring.

[0042] Specifically, the rear end of the operating unit is equipped with a T-shaped slider 244 that mates with the slide groove. This ensures that the T-shaped slider and the slide groove are not separated after assembly, and the slider guides the movement, thus connecting the mounting base and the cable clamp into a single unit. It is understood that the protruding "I" shape at the rear end of the T-shaped slider can be welded or fastened at the end, facilitating installation and preventing separation after installation. Furthermore, there is a certain clearance between the slide groove and the T-shaped slider 244, sufficient to ensure adequate rotation angle of the two clamping arms when the cable clamp is opened and closed, while also preventing the cable clamp from detaching from the slide groove.

[0043] In some embodiments, the cable retaining plate has a radial expansion joint 232 with one end open and the other closed, and the opening faces the front of the two clamping arms. At least two cable fixing grooves are provided on both sides of the expansion joint and communicate with the expansion joint through a gap 233. Figure 2 and Figure 4 As shown, four cable fixing slots are symmetrically arranged on both sides of the expansion joint, allowing multiple cables to be arranged and fixed in an orderly manner. Therefore, when the clamping part clamps the cable fixing disc, the expansion joint narrows, and the gap also decreases, causing the cable fixing slots to contract, thus clamping the cables.

[0044] Furthermore, the front of the two clamping arms is provided with hooks 242, which can extend into the expansion joint opening and cooperate with the expansion joint opening. When the front of the two clamping arms is opened, the expansion joint can be expanded to facilitate the placement of cables and the separation of cables from cable clamps.

[0045] The cable retaining disc 23 is made of flexible insulating material. Therefore, it serves to protect the cable from having its insulation layer cut and provides insulation protection. Furthermore, the cable retaining disc 23 is integrated with the clamping component.

[0046] In some embodiments, to secure the cable fixing device to the photovoltaic module, the fixing base 21 is provided with a slot 211 for engaging and fixing with the photovoltaic module frame. The slot can be designed as a rectangular slot and can be interference-fitted to the B side of the photovoltaic module frame. Furthermore, to ensure reliable engagement, the slot has a serrated anti-slip texture to reliably fix the fixing device to the B side of the photovoltaic module frame and prevent it from falling off. Alternatively, adhesive can be used inside the slot to increase the reliability of the fixation.

[0047] like Figure 5 As shown, in some other embodiments, a tightening screw 214 is threaded onto the fixing base 21. The tightening screw 214 extends into the slide groove and cooperates with the T-shaped slider 244 to tighten the T-shaped slider and keep the clamping part in a closed state. Compared with using a tension spring alone, the reliability of clamping and fixing the cable is greatly increased.

[0048] The above description is merely a specific embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. Those skilled in the art should understand that the utility model includes, but is not limited to, the content described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of the utility model will be included within the scope of the claims.

Claims

1. A photovoltaic module cable fixation device, characterized in that, The device includes a mounting base for fixing to the frame of a photovoltaic module and a cable clamp connected to the mounting base. The cable clamp includes a cable fixing disc and a clamping component. The cable fixing disc is provided with a cable fixing groove for clamping the cable. The clamping component is provided with a clamping part for clamping the cable fixing disc. The clamping part clamps the cable fixing disc and causes the cable fixing groove to clamp the cable.

2. A photovoltaic module cable fixation device according to claim 1, characterized in that, The clamping component includes two clamping arms and an elastic element. The two clamping arms are cross-hinged at the middle part by a pin. The front parts of the two clamping arms cooperate to form a clamping part for clamping the cable fixing disc. The clamping part is provided with a clamping groove that matches the shape of the cable fixing disc. The elastic element is used to drive the two clamping arms to rotate.

3. A photovoltaic module cable fixation device according to claim 2, characterized in that, The fixed base is provided with two sliding grooves, and the rear of the two clamping arms is provided with controllable operating parts. When operated, the rear ends of the two operating parts slide along the two sliding grooves to realize the relative rotation of the two clamping arms.

4. A photovoltaic module cable fixation device according to claim 3, characterized in that, The fixed base has a fixed plate between the two sliding grooves, and two elastic elements are respectively arranged between the fixed plate and the rear end of the two operating parts.

5. A photovoltaic module cable fixation device according to claim 3, wherein, The elastic element is a tension spring; and / or, the rear end of the operating part is provided with a T-shaped slider that cooperates with the slide groove.

6. A photovoltaic module cable fixation device according to claim 2, wherein, The cable fixing plate has a radial expansion joint in the middle, with one end open and the other end closed, and the opening faces the front of the two clamping arms. At least two cable fixing grooves are provided on both sides of the expansion joint and are connected to the expansion joint through gaps.

7. A photovoltaic module cable fixation device according to claim 6, wherein, The front of the two clamping arms is equipped with hooks that fit into the opening of the expansion joint.

8. A photovoltaic module cable fixation device according to claim 1, wherein, The cable retaining disc is made of flexible insulating material; and / or, the cable retaining disc and the clamping component are integrated.

9. A photovoltaic module cable fixation device according to claim 1, wherein, The mounting base is provided with a slot for engaging and fixing with the frame of the photovoltaic module.

10. A photovoltaic power plant comprising photovoltaic modules, characterized in that, The photovoltaic module frame is connected to the cable fixing device as described in any one of claims 1 to 9.

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