Photovoltaic module wiring device for photovoltaic power generation

Abstract

The utility model discloses a photovoltaic module wiring device for photovoltaic power generation, which comprises a cathode junction box and an anode junction box, the cathode junction box is electrically connected with a cathode cable, one end of the cathode cable is fixedly connected with a fixing piece, the anode junction box is electrically connected with an anode cable, one end of the anode cable is fixedly connected with an inserting block, and the inserting block is fixedly connected with a connecting piece. One end of the fixing piece is provided with a slot, one end of the insertion block is matched with the inner side wall of the slot, and the interior of the slot and one end of the insertion block are fixedly connected with magnetic terminals; according to the utility model, the wiring and dismounting processes are relatively simple, the working efficiency of installation and maintenance of a photovoltaic system is improved, the connection stability between the insertion block and the fixing piece is doubly guaranteed through the preliminary fixation of the magnetic suction terminal and the cooperation of the limiting ball and the limiting groove, the problem of poor circuit contact caused by loosening is avoided, and the service life of the photovoltaic system is prolonged. And the sealing rubber ring on the surface of the insertion block can prevent impurities such as moisture and dust from entering the wiring part, so that the service life of the wiring device is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic module installation technology, specifically a photovoltaic module wiring device for photovoltaic power generation. Background Technology

[0002] In photovoltaic (PV) power generation systems, the electrical connections between PV modules are crucial for ensuring stable system operation and efficient power generation. Traditional PV module wiring devices suffer from numerous problems. For example, the connections are not robust enough; under prolonged exposure to harsh environments such as wind, sun, and rain, they are prone to loosening or even detachment. This can lead to poor circuit contact, affecting power generation efficiency and potentially causing safety hazards in severe cases. Furthermore, traditional wiring devices have poor sealing performance, allowing moisture and dust to easily enter the wiring areas, causing corrosion and damage to internal components and shortening the lifespan of the wiring device. In addition, traditional wiring methods are complex to connect and disconnect, which is detrimental to the installation and maintenance of PV systems. Therefore, those skilled in the art have provided a PV module wiring device for PV power generation to solve the problems mentioned in the background. Utility Model Content

[0003] The purpose of this utility model is to provide a photovoltaic module wiring device for photovoltaic power generation, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A photovoltaic module wiring device for photovoltaic power generation includes a negative terminal box and a positive terminal box. The negative terminal box is electrically connected to a negative cable, and a fixing member is fixedly connected to one end of the negative cable. The positive terminal box is electrically connected to a positive cable, and a plug is fixedly connected to one end of the positive cable. A slot is opened at one end of the fixing member, and one end of the plug fits into the inner side wall of the slot. Magnetic terminals are fixedly connected to both the inside of the slot and one end of the plug.

[0006] Furthermore, a movable sleeve is slidably connected to the surface of the fixing member, and a pressure block is fixedly connected to the inner side wall of the movable sleeve.

[0007] Furthermore, a spring cavity is formed between the pressure block and the fixing member, and a return spring is fixedly connected inside the spring cavity.

[0008] Furthermore, the surface of the fixing member is provided with annularly arranged ball grooves, and a limiting ball is placed on the inner sidewall of the ball groove.

[0009] Furthermore, the surface of the insert block is provided with a limiting groove that matches the limiting ball.

[0010] Furthermore, the surface of the insert block is provided with a limiting groove that matches the limiting ball.

[0011] By adopting the above technical solution

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. The wiring and disassembly process is relatively simple, requiring only the insertion or removal of the plug. Furthermore, the design of the movable sleeve and return spring makes the insertion and removal of the limit ball relatively easy, improving the efficiency of photovoltaic system installation and maintenance. The initial fixation by the magnetic terminal and the cooperation between the limit ball and the limit groove provide double protection for the connection stability between the plug and the fixing component, effectively resisting interference from external environmental factors and avoiding poor circuit contact caused by loosening, thus ensuring the stable operation of the photovoltaic power generation system.

[0014] 2. The sealing ring on the surface of the plug can prevent moisture, dust and other impurities from entering the wiring part, reducing the risk of internal components being corroded and damaged, extending the service life of the wiring device and reducing maintenance costs. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure of a photovoltaic module wiring device for photovoltaic power generation;

[0016] Figure 2 A schematic diagram of the planar structure of the fixing component and plug of a photovoltaic module wiring device for photovoltaic power generation;

[0017] Figure 3 A schematic diagram of a planar structure for inserting a connector block into a slot in a photovoltaic module wiring device for photovoltaic power generation;

[0018] Figure 4 A photovoltaic module wiring device for photovoltaic power generation Figure 3 Enlarged view of point A in the middle.

[0019] In the diagram: 1. Negative terminal box; 2. Positive terminal box; 3. Negative cable; 4. Positive cable; 5. Fixing component; 6. Insert block; 7. Movable sleeve; 8. Pressure block; 9. Spring cavity; 10. Return spring; 11. Ball groove; 12. Limiting ball; 13. Slot; 14. Limiting groove; 15. Sealing ring; 16. Magnetic terminal. Detailed Implementation

[0020] To make the technical means, creative features, achieved objectives and effects of this utility model easier to understand, the present utility model is further described below in conjunction with specific embodiments. In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0021] Please see Figures 1-4This utility model provides an embodiment of a photovoltaic module wiring device for photovoltaic power generation, including a negative terminal junction box 1 and a positive terminal junction box 2. The negative terminal junction box 1 is electrically connected to a negative cable 3, and a fixing member 5 is fixedly connected to one end of the negative cable 3. The positive terminal junction box 2 is electrically connected to a positive cable 4, and a plug 6 is fixedly connected to one end of the positive cable 4. A slot 13 is opened at one end of the fixing member 5, and one end of the plug 6 fits into the inner sidewall of the slot 13. The inside of the slot 13 is connected to one end of the plug 6. All are fixedly connected with magnetic terminals 16. The surface of the fixing member 5 is slidably connected with a movable sleeve 7. The inner side wall of the movable sleeve 7 is fixedly connected with a pressure block 8. A spring cavity 9 is formed between the pressure block 8 and the fixing member 5. A reset spring 10 is fixedly connected in the spring cavity 9. The surface of the fixing member 5 is provided with annularly arranged ball grooves 11. A limiting ball 12 is placed on the inner side wall of the ball grooves 11. The surface of the insert block 6 is provided with a limiting groove 14 that matches the limiting ball 12. Two sets of sealing rubber rings 15 are also embedded and connected on the surface of the insert block 6.Each photovoltaic panel is electrically connected to a positive terminal box 2 and a negative terminal box 1. When connecting the previous photovoltaic panel to the next photovoltaic panel, the plug 6 on the previous photovoltaic panel is inserted into the slot 13 of the fixing component 5 of the next photovoltaic panel. Since magnetic terminals 16 are fixedly connected to both the slot 13 and one end of the plug 6, the magnetic terminals 16 will attract each other, thus initially fixing the plug 6 and the slot 13 and achieving electrical connection. During the insertion of the plug 6, the plug 6 will push the limiting ball 12 to move outward of the ball groove 11. When the plug 6 is fully inserted, the limiting ball 12 moves to the outside of the ball groove 11. When aligned with the limiting groove 14 on the surface of the insert 6, the limiting ball 12 is pressed into the limiting groove 14 by the pressure block 8 on the inner wall of the movable sleeve 7, thereby further tightening the connection between the insert 6 and the fixing member 5 and preventing the insert 6 from accidentally coming out. The return spring 10 between the movable sleeve 7 and the fixing member 5 is in a compressed state, which will continuously give the movable sleeve 7 an outward pushing force, so that the pressure block 8 always applies pressure to the limiting ball 12, ensuring that the limiting ball 12 is stably stuck in the limiting groove 14. The two sets of sealing rubber rings 15 embedded on the surface of the insert 6 are connected after the insert 6 is inserted into the slot 13. This design effectively prevents moisture and dust from entering the wiring area, providing a good seal. When disassembly is required, simply overcome the spring force of the return spring 10 and slide the movable sleeve 7 away from the plug 6, so that the pressure block 8 no longer applies pressure to the limiting ball 12. The limiting ball 12 can then disengage from the limiting groove 14, allowing the plug 6 to be easily pulled out, completing the disassembly operation. The wiring and disassembly process is relatively simple; simply insert or pull out the plug 6. Furthermore, the design of the movable sleeve 7 and the return spring 10 makes the insertion and removal of the limiting ball 12 relatively easy. This design facilitates easier installation and maintenance of photovoltaic systems, improving efficiency. The initial fixation by the magnetic terminal 16 and the cooperation between the limiting ball 12 and the limiting groove 14 provide double protection for the connection stability between the plug 6 and the fixing component 5. This effectively resists interference from external environmental factors, preventing poor circuit contact due to loosening and ensuring stable operation of the photovoltaic power generation system. The sealing ring 15 on the surface of the plug 6 prevents moisture, dust, and other impurities from entering the wiring area, reducing the risk of corrosion and damage to internal components, extending the service life of the wiring device, and lowering maintenance costs.

[0022] Each photovoltaic panel is electrically connected to a positive terminal box 2 and a negative terminal box 1. When connecting the previous photovoltaic panel to the next, the plug 6 on the previous photovoltaic panel is inserted into the slot 13 of the fixing component 5 of the next photovoltaic panel. Since magnetic terminals 16 are fixedly connected to both the slot 13 and one end of the plug 6, the magnetic terminals 16 will attract each other, initially fixing the plug 6 and the slot 13 and achieving electrical connection. During the insertion of the plug 6, the plug 6 will push the limiting ball 12 to move outward of the ball groove 11. When the plug 6 is fully inserted and the limiting ball 12 moves to the position aligned with the limiting groove 14 on the surface of the plug 6, the limiting ball 12 is pressed into the limiting groove 14 under the action of the pressing block 8 on the inner side wall of the movable sleeve 7, thereby further tightly connecting the plug 6 and the fixing component 5 and preventing the plug 6 from being inserted into the limiting groove 14. In the event of accidental dislodgement, the return spring 10 between the movable sleeve 7 and the fixed component 5 is compressed, continuously exerting an outward pushing force on the movable sleeve 7. This ensures that the pressure block 8 consistently applies pressure to the limiting ball 12, guaranteeing that the limiting ball 12 is stably locked within the limiting groove 14. The two sets of sealing rings 15 embedded in the surface of the insert 6 effectively prevent moisture and dust from entering the wiring area after the insert 6 is inserted into the slot 13, providing a good seal. When disassembly is required, simply overcome the elasticity of the return spring 10 and slide the movable sleeve 7 away from the insert 6, causing the pressure block 8 to cease applying pressure to the limiting ball 12. The limiting ball 12 can then disengage from the limiting groove 14, allowing the insert 6 to be easily pulled out, completing the disassembly operation. The photovoltaic and energy storage systems operate in parallel with the grid, with the mains power maintaining stable voltage and frequency. Loads at all levels are switched on and off in an orderly manner. During periods of sufficient sunlight, photovoltaic power is prioritized for load supply, with a photovoltaic power output exceeding 5MW. Any excess photovoltaic power (above 5MW) can be used to charge the energy storage system. When sunlight is insufficient during the day, the photovoltaic power supply is less than 4MW. If the grid power reaches its power limit and the combined photovoltaic and grid power supply is insufficient to power the load, the diesel generator will be activated. (The EMS provides the power supply value of the photovoltaic and energy storage system, and the operator manually determines whether to add load and whether to activate the diesel generator). At night, when the photovoltaic system does not generate electricity, the energy storage will supply power to the lower limit of the SOC within a limited time. The remaining time will be powered by the diesel generator and grid power.

[0023] The wiring and disassembly process is relatively simple, requiring only the insertion or removal of the plug 6. Furthermore, the design of the movable sleeve 7 and the return spring 10 makes the insertion and removal of the limiting ball 12 easy, improving the efficiency of photovoltaic system installation and maintenance. The initial fixation by the magnetic terminal 16 and the cooperation between the limiting ball 12 and the limiting groove 14 provide double protection for the connection stability between the plug 6 and the fixing component 5, effectively resisting interference from external environmental factors and avoiding poor circuit contact due to loosening, ensuring the stable operation of the photovoltaic power generation system. The sealing ring 15 on the surface of the plug 6 prevents moisture, dust, and other impurities from entering the wiring area, reducing the risk of corrosion and damage to internal components, extending the service life of the wiring device, and lowering maintenance costs.

[0024] This specification describes embodiments, but not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A photovoltaic module wiring device for photovoltaic power generation, characterized in that, It includes a negative terminal box (1) and a positive terminal box (2). The negative terminal box (1) is electrically connected to a negative cable (3). One end of the negative cable (3) is fixedly connected to a fixing member (5). The positive terminal box (2) is electrically connected to a positive cable (4). One end of the positive cable (4) is fixedly connected to a plug (6). One end of the fixing member (5) has a slot (13). One end of the plug (6) fits into the inner wall of the slot (13). Magnetic terminals (16) are fixedly connected inside the slot (13) and one end of the plug (6).

2. The photovoltaic module wiring device for photovoltaic power generation according to claim 1, characterized in that, The surface of the fastener (5) is slidably connected to a movable sleeve (7), and a pressure block (8) is fixedly connected to the inner side wall of the movable sleeve (7).

3. A photovoltaic module wiring device for photovoltaic power generation according to claim 2, characterized in that, A spring cavity (9) is formed between the pressure block (8) and the fixing member (5), and a reset spring (10) is fixedly connected inside the spring cavity (9).

4. A photovoltaic module wiring device for photovoltaic power generation according to claim 2, characterized in that, The surface of the fastener (5) is provided with annularly arranged ball grooves (11), and a limiting ball (12) is placed on the inner side wall of the ball grooves (11).

5. A photovoltaic module wiring device for photovoltaic power generation according to claim 1, characterized in that, The surface of the insert (6) is provided with a limiting groove (14) that matches the limiting ball (12).

6. A photovoltaic module wiring device for photovoltaic power generation according to claim 1, characterized in that, Two sets of sealing rings (15) are also embedded and connected on the surface of the insert (6).

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