Current overload automatic power-off alarm device based on photovoltaic panel

Abstract

The utility model belongs to the technical field of photovoltaic panel circuit protection, and particularly relates to an automatic power-off alarm device based on photovoltaic panel current overload, which comprises a mounting plate, an inverter is mounted on the top surface of the mounting plate, a wiring terminal is mounted on the side wall of the inverter, a conduction sheet is connected onto the wiring terminal, one end of the conduction sheet is fixedly connected with a wire, and the other end of the conduction sheet is fixedly connected with a power supply. An insulating layer is arranged on the side wall of the wire, a supporting plate is fixedly connected to the top face of the mounting plate, the insulating layer penetrates through the supporting plate, the other end of the wire is connected with a fuse wire, a tension spring is assembled on the side wall of the fuse wire, a hanging ring is movably connected to the top face of the mounting plate, and the hanging ring penetrates through the mounting plate and is fixedly connected with a fixing plate. A power-off assembly is arranged on the bottom face of the fixing plate, and an alarm assembly is arranged on the bottom face of the mounting plate. According to the utility model, the fuse wire can be fused according to high temperature generated by overload of current and voltage in the circuit, and electric energy in the circuit is utilized to drive the alarm to operate.

Description

Technical Field

[0001] The utility model belongs to the technical field of photovoltaic panel circuit protection, and specifically relates to an automatic power-off alarm device based on photovoltaic panel current overload. Background Art

[0002] When photovoltaic panels use solar energy to generate electricity, they need to convert direct current into alternating current through an inverter so that the electricity can be integrated into the power grid. However, during the current conversion process, the inverter or controller is prone to overcurrent and overload. If the inverter fails, it may cause current loss of control and overload.

[0003] Since the circuit temperature rises when the current is overloaded, traditional detection methods generally use temperature sensors or current sensors for detection. If the detection element fails or loses power, it will affect the safety performance of the circuit. It is not convenient to perform power-off alarm processing based on the high temperature changes in the circuit, thereby increasing the safety risks of the circuit and being unfavorable for practical application. Utility Model Content

[0004] The purpose of this utility model is to provide an automatic power-off alarm device based on photovoltaic panel current overload, which can melt the fuse according to the high temperature generated by the current and voltage overload in the circuit, and use the electrical energy in the circuit to drive the alarm to operate.

[0005] The technical solutions adopted in this application are as follows:

[0006] An automatic power-off alarm device based on photovoltaic panel current overload includes a mounting plate, an inverter is mounted on the top surface of the mounting plate, a wiring terminal is mounted on the side wall of the inverter, a conducting plate is connected to the wiring terminal, one end of the conducting plate is fixedly connected to a wire, the side wall of the wire is provided with an insulating layer, the top surface of the mounting plate is fixedly connected to a support plate, the insulating layer passes through the support plate, the other end of the wire is connected to a fuse, the side wall of the fuse is equipped with a tension spring, the top surface of the mounting plate is movably connected to a hanging ring, the hanging ring passes through the mounting plate and is fixedly connected to a fixing plate, the bottom surface of the fixing plate is provided with a power-off component, and the bottom surface of the mounting plate is provided with an alarm component.

[0007] The power-off assembly includes a horizontal plate fixedly connected to the bottom surface of the fixed plate, two racks are arranged on the left side of the horizontal plate, the rack on the right side is fixedly connected to the horizontal plate, the bottom surface of the mounting plate is fixedly connected to a shell, the inner wall of the shell is rotatably connected to a rotating shaft, the side walls of the rotating shaft are fixedly connected to a number of gears, the racks on both sides are meshed with the gears on both sides, the top of the rack on the left side is fixedly connected to a movable plate, the top surface of the mounting plate is provided with a through slot, the movable plate passes through the through slot and is fixedly connected to a conducting rod, and the side walls of the insulating layer are provided with a circular hole.

[0008] The alarm assembly includes a connecting plate fixedly connected to the left rack and the side wall of the mounting plate, and the side walls on opposite sides of the connecting plates are respectively fixedly connected with conductive contacts. A transformer and an alarm are installed on the bottom surface of the mounting plate. The transformer is electrically connected to the conductive rod, and the alarm is electrically connected to the transformer.

[0009] The bottom surface of the mounting plate is fixedly connected with a positioning rod, the bottom end of the positioning rod passes through the transverse plate and is movably connected thereto, and the side wall of the positioning rod is equipped with a spring.

[0010] Connectors are respectively installed at both ends of the fuse, and two bolts are installed on the side walls of the connector, which are respectively connected to the wire and the fuse.

[0011] The side wall of the fuse is sleeved with a circular ring, and the top end of the tension spring is connected to the circular ring.

[0012] The technical effects achieved by this utility model are:

[0013] This practical photovoltaic panel current overload-based automatic power-off alarm device cooperates with the mounting board, inverter, fuse, power-off component and alarm component, and utilizes the fuse in conjunction with a mechanical control structure. The fuse can be melted according to the high temperature generated by the current and voltage overload in the circuit, and the electrical energy in the circuit can be used to drive the alarm to operate. Moreover, when one of the multiple wires in the same circuit is overloaded with high temperature, a power-off alarm will be generated, effectively improving the safety performance of the circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of this practical embodiment;

[0015] Figure 2 This is a bottom view of the structure of the present practical embodiment;

[0016] Figure 3 This is a bottom-up perspective view of the practical embodiment;

[0017] Figure 4 It is a partial structural diagram of this practical embodiment;

[0018] Figure 5 This is a practical embodiment Figure 2 A magnified view of point A in the figure;

[0019] Figure 6 This is a practical embodiment Figure 2 Enlarged view of point B in .

[0020] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0021] 1. Mounting plate; 2. Inverter; 3. Terminal block; 4. Conductor; 5. Wire; 6. Insulation layer; 7. Support plate; 8. Fuse; 9. Tension spring; 10. Hanging ring; 11. Fixed plate; 12. Horizontal plate; 13. Rack; 14. Rotating shaft; 15. Gear; 16. Conducting rod; 17. Movable plate; 18. Through slot; 19. Housing; 20. Connecting plate; 21. Conducting contact; 22. Alarm; 23. Transformer; 24. Positioning rod; 25. Spring; 26. Connector; 27. Bolt; 28. Round hole; 29. ​​Round ring. DETAILED DESCRIPTION

[0022] In order to make the purpose and advantages of this utility more clear, the utility is described in detail below with reference to the embodiments. It should be understood that the following text is only used to describe one or several specific implementation methods of this utility and does not strictly limit the scope of protection specifically requested by this utility.

[0023] like Figures 1-6 As shown, the automatic power-off alarm device based on photovoltaic panel current overload includes a mounting plate 1, an inverter 2 is mounted on the top surface of the mounting plate 1, a terminal block 3 is mounted on the side wall of the inverter 2, a conducting piece 4 is connected to the terminal block 3, one end of the conducting piece 4 is fixedly connected to a wire 5, and an insulating layer 6 is provided on the side wall of the wire 5, a support plate 7 is fixedly connected to the top surface of the mounting plate 1, the insulating layer 6 passes through the support plate 7, the other end of the wire 5 is connected to a fuse 8, and a tension spring 9 is installed on the side wall of the fuse 8, a hanging ring 10 is movably connected to the top surface of the mounting plate 1, the hanging ring 10 passes through the mounting plate 1 and is fixedly connected to the fixing plate 11, a power-off component is provided on the bottom surface of the fixing plate 11, and an alarm component is provided on the bottom surface of the mounting plate 1.

[0024] The installation positions and directions of the power-off components and the alarm components can be set according to actual circuit changes and layouts, and are not limited to this solution.

[0025] like Figure 2 and Figure 5 As shown, the power-off assembly includes a horizontal plate 12 fixedly connected to the bottom surface of the fixed plate 11, two racks 13 are arranged on the left side of the horizontal plate 12, the right rack 13 is fixedly connected to the horizontal plate 12, and the bottom surface of the mounting plate 1 is fixedly connected to a shell 19, the inner wall of the shell 19 is rotatably connected to a rotating shaft 14, and the side wall of the rotating shaft 14 is fixedly connected to a number of gears 15, the racks 13 on both sides are engaged with the gears 15 on both sides, and the top of the left rack 13 is fixedly connected to a movable plate 17, a through slot 18 is provided on the top surface of the mounting plate 1, the movable plate 17 passes through the through slot 18 and is fixedly connected to a conducting rod 16, and a circular hole 28 is provided on the side wall of the insulating layer 6.

[0026] Among them, after the fuse 8 is heated and the tension of the tension spring 9 is added, it will bend slightly, but it will not affect its performance. The tension of the tension spring 9 will not be too large. Only when the fuse 8 breaks will the power-off component be triggered to operate, causing the right rack 13 to move downward, and the left rack 13 drives the conducting rod 16 to insert into the circular hole 28 and connect with the wire 5, connecting the wire 5 with current and voltage to the transformer 23, which is used to drive the alarm 22 for alarm processing.

[0027] like Figure 2 and Figure 5 As shown, the alarm assembly includes a connecting plate 20 fixedly connected to the left rack 13 and the side wall of the mounting plate 1, and the side walls on the opposite sides of the connecting plates 20 are respectively fixedly connected with conductive contacts 21. A transformer 23 and an alarm 22 are installed on the bottom surface of the mounting plate 1. The transformer 23 is electrically connected to the conductive rod 16, and the alarm 22 is electrically connected to the transformer 23.

[0028] Specifically, the alarm 22 can adopt other alarm facilities such as buzzer and network alarm, and the performance of the transformer 23 can be adjusted according to the actual circuit specifications. Since it belongs to the existing mature technology, it will not be described in detail in this solution.

[0029] like Figure 6 As shown, a positioning rod 24 is fixedly connected to the bottom surface of the mounting plate 1. The bottom end of the positioning rod 24 extends through the cross plate 12 and is movably connected thereto. A spring 25 is mounted on the side wall of the positioning rod 24. When the power-off assembly is in the initial state, the spring 25 is in a compressed state. When the fuse 8 melts, the rebound force of the spring 25 immediately drives the cross plate 12 downward, achieving the purpose of quickly disconnecting the power.

[0030] like Figure 4 As shown, both ends of the fuse 8 are respectively equipped with connectors 26, and the side walls of the connector 26 are equipped with two bolts 27, which are respectively connected to the wire 5 and the fuse 8. The connector 26 is a U-shaped structure. The use of the connector 26 facilitates the subsequent replacement of the fuse 8, thereby achieving the purpose of stable use and convenient replacement.

[0031] like Figure 4 Shown, fusible link 8 sidewall sleeve is provided with circular ring 29, and tension spring 9 top is connected with circular ring 29. Circular ring 29 is insulating material, can be inserted into circular ring 29 when replacing fusible link 8, also be convenient to hang up tension spring 9 and carry out traction simultaneously.

[0032] The working principle of the present invention is as follows: when installing the fuse 8, first put the ring 29 on the fuse 8, then connect the two ends of the fuse 8 to the connecting pieces 26 on both sides, and then connect the connecting pieces 26 to the wire 5, and then hang the two ends of the tension spring 9 on the ring 29 and the hanging ring 10 respectively. The horizontal plate 12 is pulled upward by the tension spring 9, driving the right rack 13 to move upward. At the same time, the spring 25 is compressed, and the right rack 13 engages with the gear 15 and drives the left rack 13 to move downward. The force applied to the fuse 8 can maintain the tension and compression state of the tension spring 9 and the spring 25.

[0033] During the operation of the inverter 2, if the controller or the inverter 2 circuit is damaged and an overcurrent or overload occurs, the temperature of the fuse 8 rises. When the temperature exceeds the critical value, the fuse 8 breaks, the tension spring 9 loses its force, and the rebound of the spring 25 drives the right rack 13 to move downward through the cross plate 12. At the same time, the gear 15 drives the conducting rod 16 through the left rack 13 to insert into the circular hole 28 and contact the wire 5, connecting the voltage and current in the circuit to the transformer 23. After voltage transformation, the alarm 22 is activated to achieve the purpose of power-off alarm and improve the safety performance of the circuit.

[0034] The above description is only a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications should also be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this application shall be implemented in accordance with conventional means in the art unless otherwise specified or limited.

Claims

1. Based on the automatic power-off alarm device for photovoltaic panel current overload, the following features are featured: The utility model comprises a mounting plate (1), wherein an inverter (2) is mounted on the top surface of the mounting plate (1), a terminal block (3) is mounted on the side wall of the inverter (2), a conducting plate (4) is connected to the terminal block (3), one end of the conducting plate (4) is fixedly connected to a wire (5), the side wall of the wire (5) is provided with an insulating layer (6), the top surface of the mounting plate (1) is fixedly connected to a support plate (7), the insulating layer (6) passes through the support plate (7), the other end of the wire (5) is connected to a fuse (8), the side wall of the fuse (8) is equipped with a tension spring (9), the top surface of the mounting plate (1) is movably connected to a hanging ring (10), the hanging ring (10) passes through the mounting plate (1) and is fixedly connected to a fixing plate (11), the bottom surface of the fixing plate (11) is provided with a power-off component, and the bottom surface of the mounting plate (1) is provided with an alarm component.

2. The automatic power-off alarm device based on photovoltaic panel current overload according to claim 1 is characterized in that: The power-off assembly comprises a transverse plate (12) fixedly connected to the bottom surface of the fixed plate (11), two racks (13) are arranged on the left side of the transverse plate (12), and the rack (13) on the right side is fixedly connected to the transverse plate (12), the bottom surface of the mounting plate (1) is fixedly connected to a shell (19), the inner wall of the shell (19) is rotatably connected to a rotating shaft (14), and the side wall of the rotating shaft (14) is fixedly connected to a plurality of gears (15), the racks (13) on both sides are meshed with the gears (15) on both sides, and the top of the rack (13) on the left side is fixedly connected to a movable plate (17), a through slot (18) is provided on the top surface of the mounting plate (1), the movable plate (17) passes through the through slot (18) and is fixedly connected to a conducting rod (16), and a circular hole (28) is provided on the side wall of the insulating layer (6).

3. The automatic power-off alarm device based on photovoltaic panel current overload according to claim 2 is characterized in that: The alarm assembly comprises a connecting plate (20) fixedly connected to the left rack (13) and the side wall of the mounting plate (1); the side walls opposite to the connecting plates (20) on both sides are respectively fixedly connected with conducting contacts (21); a transformer (23) and an alarm (22) are installed on the bottom surface of the mounting plate (1); the transformer (23) is electrically connected to the conducting rod (16), and the alarm (22) is electrically connected to the transformer (23).

4. The automatic power-off alarm device based on photovoltaic panel current overload according to claim 2 is characterized in that: The bottom surface of the mounting plate (1) is fixedly connected with a positioning rod (24), the bottom end of the positioning rod (24) passes through the horizontal plate (12) and is movably connected thereto, and the side wall of the positioning rod (24) is equipped with a spring (25).

5. The automatic power-off alarm device based on photovoltaic panel current overload according to claim 1 is characterized in that: Connectors (26) are respectively installed at both ends of the fuse (8), and two bolts (27) are installed on the side wall of the connector (26), and the bolts (27) are respectively connected to the wire (5) and the fuse (8).

6. The automatic power-off alarm device based on photovoltaic panel current overload according to claim 1 is characterized in that: The side wall of the fuse (8) is sleeved with a circular ring (29), and the top end of the tension spring (9) is connected to the circular ring (29).

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