Plug-in photovoltaic cell junction box of diode module

Abstract

The utility model relates to the technical field of photovoltaic cell junction boxes, and discloses a diode module plug-in type photovoltaic cell junction box, which comprises a box body, a box cover is hinged to the rear end of the upper end of the box body, connecting structures are arranged at the front ends of the box body and the box cover, a heat dissipation sealing structure is arranged on the box body, and the heat dissipation sealing structure is arranged on the box body. The connecting structure comprises a fixing block, the fixing block is fixed to the center of the front end of the box cover, a fixing base is fixedly connected to the front end of the box body, and sliding clamping blocks are slidably connected to the two sides of the interior of the fixing block. According to the utility model, after the inserting rod is pulled upwards, the second spring drives the inserting rod to be inserted into the sliding clamping block which slides into the fixing seat, the box body and the box cover are conveniently and quickly connected after the clamping fixing block and the fixing seat are connected, the connection stability is improved, and the sealing strip can be driven by the third spring to be tightly attached to the box cover, so that the sealing performance is improved; the heat pipe is convenient for transferring heat in the box to the heat dissipation fins, thereby helping the heat dissipation of the junction box.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic cell junction box technology, and in particular to a diode module insertion type photovoltaic cell junction box. Background Technology

[0002] Photovoltaic cell junction boxes are important components connecting photovoltaic modules and external circuits. Located on the back of the photovoltaic panel, the junction box's main function is to provide a safe and stable access point for electrical connections in the solar energy system. The diode module insertion type photovoltaic cell junction box is a specially designed junction box. Its main feature is that it has built-in diodes, and these diodes are usually designed in a modular insertion manner. The modular insertion design allows the diodes to be inserted into the junction box in a modular form, which is convenient for installation and maintenance.

[0003] Currently, some existing photovoltaic cell junction boxes and covers are usually connected using bolts or clips. However, the installation or separation process of bolted connections is relatively troublesome, and the clips of clip connections may be easily damaged or loosened due to repeated use or temperature changes, resulting in unstable connections. In addition, the shock resistance of clip connections is poor, and they are prone to loosening when encountering vibration.

[0004] Therefore, those skilled in the art have provided a diode module plug-in photovoltaic cell junction box to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a diode module plug-in photovoltaic cell junction box. By pulling the plug rod upwards, a second spring causes the plug rod to insert into a sliding block inside the fixing seat. This locking of the fixing block and the fixing seat facilitates quick and easy connection between the box body and the cover, improving connection stability. A third spring causes the sealing strip to adhere tightly to the cover, enhancing sealing. A heat pipe facilitates the transfer of heat from inside the box to the heat dissipation fins, thus aiding in heat dissipation.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A diode module plug-in photovoltaic cell junction box includes a box body, a box cover is hinged to the rear end of the upper end of the box body, a connection structure is provided at the front end of both the box body and the box cover, and a heat dissipation and sealing structure is provided on the box body.

[0008] The connecting structure includes a fixing block, which is fixed at the center of the front end of the box cover. A fixing seat is fixedly connected to the front end of the box body. Sliding blocks are slidably connected to both sides inside the fixing block. A through groove is opened on one side of the lower end of the sliding block. Insert rods are slidably connected to both sides inside the fixing seat. A connecting plate is fixedly connected to the upper end of the insert rod.

[0009] The above technical solution facilitates the connection between the box body and the lid by setting the fixing block and fixing seat, and the sliding block facilitates the locking of the fixing block and fixing seat together. The insert rod facilitates the insertion into the through groove of the moving block after it moves, thereby fixing it and completing the connection between the box body and the lid.

[0010] Furthermore, the heat dissipation and sealing structure includes a sealing strip, which is slidably connected inside the upper end of the box body. Multiple No. 3 springs are fixedly connected to the lower end of the sealing strip. An aluminum plate is fixedly connected inside the rear end of the box body. Multiple heat pipes are fixedly connected inside the aluminum plate. A heat-conducting plate is fixedly connected to the rear end of the aluminum plate. Multiple heat dissipation fins are fixedly connected to the rear end of the heat-conducting plate.

[0011] The above technical solution utilizes the No. 3 spring to facilitate the reverse movement of the sealing strip using its rebound force, thereby ensuring a tight contact between the sealing strip and the lid. The heat pipe facilitates the transfer of heat generated inside the box to the heat-conducting plate on the outside using phase change and capillary action. The multiple heat dissipation fins help to quickly dissipate heat, thereby reducing the temperature inside the box.

[0012] Furthermore, a first spring is fixedly connected to both sides inside the fixed block, and the side of the first spring away from the center of the fixed block is fixedly connected to the sliding block;

[0013] The above technical solution allows the No. 1 spring to be set so that the sliding block can move in the opposite direction after being stretched.

[0014] Furthermore, the front and rear ends of both sides inside the fixed block are fixedly connected to limit sliders, and the front and rear ends of the upper end of the sliding block are provided with limit grooves;

[0015] The above technical solution, through the setting of the limiting slider and the limiting groove, facilitates the limiting function of the movement of the sliding block.

[0016] Furthermore, the upper end of the fixed base is provided with sliding grooves on both sides, and the insertion rod slides within the sliding grooves;

[0017] The above technical solution allows the insertion rod to slide inside the groove.

[0018] Furthermore, a second spring is fixedly connected inside the groove, and the second spring is sleeved on the outside of the insert rod;

[0019] The above technical solution allows the second spring to facilitate downward movement of the insertion rod after being compressed, thus inserting it into the through groove.

[0020] Furthermore, a sliding groove is provided at the upper end of the box body, and multiple No. 3 springs are fixed at the bottom of the sliding groove;

[0021] The above technical solution facilitates the fixing of multiple No. 3 springs by setting the sliding groove, and allows the sealing strip to slide within the groove.

[0022] Furthermore, thermal grease is fixedly connected to the front end of the aluminum plate, and the thermal grease is disposed inside the housing.

[0023] The above technical solution utilizes thermal grease to facilitate the transfer of heat from the box to the heat pipe, thereby improving heat transfer efficiency.

[0024] The present invention has the following beneficial effects:

[0025] 1. The present invention discloses a diode module insertion photovoltaic cell junction box. Compared with existing photovoltaic cell junction boxes, the sliding block facilitates quick and stable connection between the box body and the box cover. After pulling the sliding block outward, it is released, and the first spring drives it to move in the opposite direction and slide into the fixed seat. After the insertion rod moves upward, the sliding block continues to move, and the second spring drives the insertion rod to insert into the through slot. The position of the sliding block can be fixed, which facilitates quick and stable connection between the box cover and the box body.

[0026] 2. The diode module insertion photovoltaic cell junction box proposed in this utility model, compared with the existing photovoltaic cell junction boxes, facilitates sealing and heat dissipation through the setting of sealing strip and heat pipe. The compressed No. 3 spring provides a rebound force to drive the sealing strip to move in the opposite direction, so that it fits more tightly with the box cover, thereby improving the sealing performance of the junction box. The heat pipe uses phase change and capillary action to transfer the heat generated inside the box to the heat conduction plate, and the heat dissipation fins with a large heat dissipation area help to dissipate heat quickly, thereby helping to reduce the temperature inside the box and prevent the temperature from affecting the operation of electronic components. Attached Figure Description

[0027] Figure 1 This is an isometric view of a diode module plug-in photovoltaic cell junction box proposed in this utility model;

[0028] Figure 2 This is a schematic diagram of the sliding block of a diode module insertion photovoltaic cell junction box proposed in this utility model;

[0029] Figure 3 This is a schematic diagram of the unfolded structure of the cover of a diode module insertion photovoltaic cell junction box proposed in this utility model;

[0030] Figure 4 This is a schematic diagram of the sealing strip of a diode module insert-type photovoltaic cell junction box proposed in this utility model;

[0031] Figure 5 This is a cross-sectional view of a diode module plug-in photovoltaic cell junction box proposed in this utility model.

[0032] Legend:

[0033] 1. Box body; 2. Box lid; 3. Connecting structure; 301. Fixing block; 302. Fixing base; 303. Sliding block; 304. Spring No. 1; 305. Through groove; 306. Sliding groove; 307. Insert rod; 308. Spring No. 2; 309. Connecting plate; 310. Limiting slider; 311. Limiting groove; 4. Heat dissipation and sealing structure; 401. Sliding groove; 402. Sealing strip; 403. Spring No. 3; 404. Thermal grease; 405. Aluminum plate; 406. Heat pipe; 407. Heat-conducting plate; 408. Heat dissipation fins. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Reference Figure 1-3 One specific embodiment provided by this utility model:

[0036] A diode module plug-in photovoltaic cell junction box includes a box body 1, a box cover 2 hinged to the rear end of the upper end of the box body 1, a connection structure 3 provided at the front end of both the box body 1 and the box cover 2, and a heat dissipation and sealing structure 4 provided on the box body 1.

[0037] The connecting structure 3 includes a fixing block 301, which is fixed to the center of the front end of the lid 2. A fixing seat 302 is fixedly connected to the front end of the box body 1. Sliding blocks 303 are slidably connected to both sides inside the fixing block 301. A first spring 304 is fixedly connected to both sides inside the fixing block 301. The side of the first spring 304 away from the center of the fixing block 301 is fixedly connected to the sliding block 303. Limiting sliders 310 are fixedly connected to the front and rear ends of both sides inside the fixing block 301. Limiting grooves 311 are provided at both the front and rear ends of the upper end of the movable block 303. A through groove 305 is provided on one side of the lower end of the sliding block 303. Insert rods 307 are slidably connected inside both sides of the fixed seat 302. Sliding grooves 306 are provided on both sides of the upper end of the fixed seat 302. Insert rods 307 slide within the sliding grooves 306. A connecting plate 309 is fixedly connected to the upper end of the insert rod 307. A second spring 308 is fixedly connected inside the sliding grooves 306. The second spring 308 is sleeved on the outside of the insert rod 307.

[0038] Specifically, the fixed block 301 and the fixed seat 302 facilitate the connection between the box body 1 and the box cover 2 after they are engaged. The sliding block 303 facilitates the engagement of the fixed block 301 and the fixed seat 302. The first spring 304 facilitates the reverse movement of the sliding block 303 after being stretched. The limiting slider 310 and the limiting groove 311 limit the movement of the sliding block 303. The insertion rod 307 is inserted into the through groove 305 of the moving block after it moves, thereby fixing it and completing the connection between the box body 1 and the box cover 2. The sliding groove 306 facilitates the sliding of the insertion rod 307 inside it. The second spring 308 facilitates the downward movement of the insertion rod 307 after being squeezed, inserting it into the through groove 305.

[0039] Reference Figure 1 , Figure 4 and Figure 5 The heat dissipation and sealing structure 4 includes a sealing strip 402, which is slidably connected inside the upper end of the box body 1. Multiple No. 3 springs 403 are fixedly connected to the lower end of the sealing strip 402. A sliding groove 401 is opened at the upper end of the box body 1, and multiple No. 3 springs 403 are fixedly fixed at the bottom of the sliding groove 401. An aluminum plate 405 is fixedly connected inside the rear end of the box body 1. Multiple heat pipes 406 are fixedly connected inside the aluminum plate 405. Thermal grease 404 is fixedly connected to the front end of the aluminum plate 405 and is disposed inside the box body 1. A heat-conducting plate 407 is fixedly connected to the rear end of the aluminum plate 405, and multiple heat dissipation fins 408 are fixedly connected to the rear end of the heat-conducting plate 407.

[0040] Specifically, the placement of the No. 3 spring 403 facilitates the use of rebound force to drive the sealing strip 402 to move in the opposite direction, thereby ensuring that the sealing strip 402 is in close contact with the lid 2. The placement of the sliding groove 401 facilitates the fixing of multiple No. 3 springs 403 and allows the sealing strip 402 to slide within the groove. The placement of the thermal grease 404 facilitates the transfer of heat inside the box to the heat pipe 406, improving heat conduction efficiency. The placement of the heat pipe 406 facilitates the transfer of heat generated inside the box from the box to the heat-conducting plate 407 on the outside using phase change and capillary action. The placement of multiple heat dissipation fins 408 facilitates the rapid dissipation of heat, thereby reducing the temperature inside the box.

[0041] Working principle: In use, insert the diode module into the junction box, move the cover 2 closer to the body 1, pull the sliding block 303 outward, causing it to slide inside the fixing block 301, stretching the first spring 304. After releasing the sliding block 303, the stretched first spring 304 moves it in the opposite direction, causing it to slide into the fixing seat 302 and be intercepted by the insertion rod 307. Pull the connecting plate 309 upward, causing it to move the insertion rod 307 upward. The first spring 304 continues to move the sliding block 303 into the seat. Then, release the connecting plate 309, causing the compressed second spring 308 to move the insertion rod 307 downward, inserting it into the through slot 305, fixing the position of the sliding block 303, thus locking the cover 2 and the body 1 together. Compared with traditional bolt connections, it can be connected and separated more quickly. Compared with snap-fit ​​connections, it has better shock resistance and a more stable connection. When closing the junction box, the cover 2 moves towards... The lower part of the sealing strip 402 is squeezed, causing the third spring 403 to be squeezed. The compressed third spring 403 provides a rebound force, causing the sealing strip 402 to move in the opposite direction. The rebound force makes it fit more tightly with the cover 2, thereby improving the sealing performance of the junction box and better preventing dust and water. When working inside the junction box, the heat generated is transferred to the heat pipe 406 through the thermal grease 404. Therefore, the temperature of the end of the heat pipe 406 near the heat source rises, and the refrigerant inside changes from liquid to gas and absorbs heat. The gaseous refrigerant is transferred to the end that contacts the heat-conducting plate 407 and turns into liquid, condenses and releases heat, and transfers the heat away. The condensed liquid refrigerant will flow back along the heat pipe 406 due to capillary force. Repeating the above process, the heat generated when the junction box is working can be transferred to the side of the heat-conducting plate 407, and then the heat dissipation fins 408 with a large heat dissipation area can help to dissipate heat quickly and reduce the temperature inside the box.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A diode module plug-in photovoltaic cell junction box, comprising a box body (1), characterized in that: The rear end of the upper end of the box body (1) is hinged to the box cover (2), and the front ends of the box body (1) and the box cover (2) are provided with a connecting structure (3). The box body (1) is provided with a heat dissipation and sealing structure (4). The connecting structure (3) includes a fixing block (301), which is fixed at the center of the front end of the cover (2). A fixing seat (302) is fixedly connected to the front end of the box body (1). Sliding blocks (303) are slidably connected to both sides inside the fixing block (301). A through groove (305) is opened on one side of the lower end of the sliding block (303). Insert rods (307) are slidably connected to both sides inside the fixing seat (302). A connecting plate (309) is fixedly connected to the upper end of the insert rod (307).

2. The diode module plug-in photovoltaic cell junction box according to claim 1, characterized in that: The heat dissipation sealing structure (4) includes a sealing strip (402), which is slidably connected inside the upper end of the box body (1). Multiple No. 3 springs (403) are fixedly connected to the lower end of the sealing strip (402). An aluminum plate (405) is fixedly connected inside the rear end of the box body (1). Multiple heat pipes (406) are fixedly connected inside the aluminum plate (405). A heat-conducting plate (407) is fixedly connected to the rear end of the aluminum plate (405). Multiple heat dissipation fins (408) are fixedly connected to the rear end of the heat-conducting plate (407).

3. The diode module plug-in photovoltaic cell junction box according to claim 1, characterized in that: A first spring (304) is fixedly connected to both sides inside the fixed block (301), and the side of the first spring (304) away from the center of the fixed block (301) is fixedly connected to the sliding block (303).

4. The diode module plug-in photovoltaic cell junction box according to claim 1, characterized in that: The front and rear ends of both sides of the fixed block (301) are fixedly connected to limit sliders (310), and the front and rear ends of the upper end of the sliding block (303) are provided with limit grooves (311).

5. A diode module plug-in photovoltaic cell junction box according to claim 1, characterized in that: The upper end of the fixed base (302) is provided with sliding grooves (306) on both sides, and the insertion rod (307) slides within the sliding grooves (306).

6. A diode module plug-in photovoltaic cell junction box according to claim 5, characterized in that: A second spring (308) is fixedly connected inside the slide groove (306), and the second spring (308) is sleeved on the outside of the insert rod (307).

7. A diode module plug-in photovoltaic cell junction box according to claim 2, characterized in that: The upper end of the box (1) is provided with a sliding groove (401), and multiple No. 3 springs (403) are fixed at the bottom of the sliding groove (401).

8. A diode module plug-in photovoltaic cell junction box according to claim 2, characterized in that: The front end of the aluminum plate (405) is fixedly connected with thermal grease (404), and the thermal grease (404) is disposed inside the box body (1).

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