Photovoltaic energy storage cable branch box with fault alarm function

Abstract

This utility model relates to the field of cable branch box technology, specifically a photovoltaic energy storage cable branch box with fault alarm function, comprising: a box body with an alarm device installed on it; a cover plate that can be opened and closed on the box body; horizontal and vertical copper busbars installed inside the box body; and a detection component installed on the cover plate, which detects the temperature at the connection point of the horizontal and vertical copper busbars. The detection component includes: a plate detachably connected to the cover plate; and a sensor installed on the plate, the position and direction of which are adjustable. The detection component also includes: an inner ring; connecting beams connecting the inner ring and the plate; and mounting holes in the inner ring, in which the sensor is installed. The connecting beams are arc-shaped, and several connecting beams are evenly distributed around the outer periphery of the inner ring. It can monitor local overheating faults in real time and automatically issue an alarm when an abnormality is detected.

Description

Technical Field

[0001] This utility model relates to the field of cable branch box technology, specifically a photovoltaic energy storage cable branch box with fault alarm function. Background Technology

[0002] With the deepening of urban power distribution network cable transformation, cable branch boxes, as key node equipment at the end of the power distribution system, undertake the important functions of multi-branch cable connection and power distribution in areas with concentrated independent loads. According to the differentiated needs of application scenarios, this equipment is mainly divided into three categories: power type, lighting type, and metering type. Its core feature is that it adopts a non-direct operation structural design and realizes safe branching and power distribution of cable lines through a fully enclosed wiring system.

[0003] Given the operational characteristics of dedicated cable branch boxes for photovoltaic energy storage systems, their outdoor installation presents typical environmental challenges: the boxes are exposed to the natural environment for extended periods, making them susceptible to diurnal temperature variations, moisture intrusion, and condensation. These conditions can lead to various problems in the cable connection system, including oxidation and corrosion, mechanical loosening due to thermal expansion and contraction of contacts, and abnormally high contact resistance under high load conditions. Ultimately, this can result in systemic operational risks such as localized overheating and insulation degradation, posing a potential threat to the reliability of the power distribution network. Utility Model Content

[0004] In order to solve the technical problems existing in the background art, the present invention provides a photovoltaic energy storage cable branch box with fault alarm function, which can monitor local heating faults in real time and automatically issue an alarm when an abnormality is detected.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A photovoltaic energy storage cable branch box with fault alarm function includes:

[0007] The enclosure is equipped with an alarm device.

[0008] A cover plate, which can be opened and closed, is installed on the box body;

[0009] Horizontal and vertical copper busbars are installed inside the enclosure;

[0010] The detection component, mounted on the cover plate, detects the temperature at the connection point between the horizontal and vertical copper busbars.

[0011] The detection components include:

[0012] The plate body is detachably connected to the cover plate;

[0013] The sensor is mounted on the board, and its position and orientation are adjustable.

[0014] Furthermore, the detection components also include:

[0015] Inner ring;

[0016] Connecting beams connect the inner ring and the plate;

[0017] The mounting hole is located in the inner ring, and the sensor is installed in the mounting hole.

[0018] Furthermore, the connecting beams are arc-shaped, with several connecting beams evenly distributed around the outer perimeter of the inner ring.

[0019] Furthermore, the inner ring, connecting beam, and mounting holes are all laser-cut.

[0020] Furthermore, the sensor is an infrared temperature sensor.

[0021] Furthermore, the box is also equipped with an openable door panel.

[0022] Furthermore, a transparent observation window is provided on the door panel.

[0023] The beneficial effects of this utility model are:

[0024] (1) The detection component can monitor the temperature of the electrical connection between the horizontal and vertical copper busbars in real time. When a local abnormal temperature rise is detected, the system will automatically trigger the alarm mechanism to realize the immediate warning of the fault.

[0025] (2) The modular design of the openable protective cover integrates the detection components. This structure not only meets the protection level requirements, but also enables the rapid installation and replacement of the detection components.

[0026] (3) The three-dimensional adjustment mechanism consisting of an inner ring, a connecting beam and mounting holes can realize the angle adjustment and position fine adjustment of the sensor to ensure the positioning accuracy of the temperature monitoring point.

[0027] (4) The equipment door panel adopts a transparent observation window design, which facilitates visual inspection while maintaining protective performance. Attached Figure Description

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] Figure 1 This is a schematic diagram of the structure of this utility model. Figure 1 ;

[0030] Figure 2 This is a schematic diagram of the structure of this utility model. Figure 2 ;

[0031] Figure 3 This is a structural schematic diagram of the cover plate;

[0032] Figure 4 This is a schematic diagram of the detection component.

[0033] In the picture:

[0034] 1. Enclosure, 2. Cover plate, 3. Detection components, 4. Door panel, 5. Alarm device, 6. Horizontal copper busbar, 7. Vertical copper busbar;

[0035] 301. Plate body, 302. Sensor, 303. Inner ring, 304. Connecting beam, 305. Mounting hole. Detailed Implementation

[0036] The present invention will be further described in detail below with reference to the accompanying drawings.

[0037] like Figure 1 , 2 As shown, a photovoltaic energy storage cable branch box with fault alarm function includes a box body 1. The box body 1 contains several circuit breakers, horizontal copper busbars 6, and vertical copper busbars 7, which are connected to each other via the horizontal and vertical copper busbars 6 and 7. A cover plate 2 is closable and mounted on the box body 1. An operating hole is provided on the cover plate 2 for easy operation of the circuit breakers inside the box body 1.

[0038] The horizontal copper busbars 6 and vertical copper busbars 7 are staggered, and the horizontal copper busbars 6 and vertical copper busbars 7 are arranged orthogonally, with the horizontal copper busbars 6 maintaining equal intervals and the vertical copper busbars 7 forming a uniform array. This structural design ensures that there is no physical overlap between the horizontal copper busbars 6 and the vertical copper busbars 7, thus preventing physical overlap at the connection points of the horizontal copper busbars 6 and the vertical copper busbars 7. Furthermore, the connection nodes of the horizontal copper busbars 6 and the vertical copper busbars 7 form a matrix distribution, facilitating interference-free targeted detection by the sensor 302 on the cover plate 2.

[0039] To enable it to have an alarm function, an alarm device 5 is installed on the top of the enclosure 1. The alarm device 5 can emit a wireless alarm signal and also activate an audible and visual alarm. A control device is also installed inside the enclosure 1, and both the alarm device 5 and the sensor 302 are connected to the control device.

[0040] like Figure 3 As shown, the detection component 3 is mounted on the cover plate 2, and the cover plate 2 has a mounting groove that matches the detection component 3. The detection component 3 can detect the temperature at the connection between the horizontal copper busbar 6 and the vertical copper busbar 7. The cover plate 2 adopts a modular design and can be opened and closed. The detection component 3 is integrated on the cover plate 2 and also adopts a modular design. This structure not only meets the protection level requirements, but also allows for quick installation and replacement of the detection component 3.

[0041] like Figure 4As shown, the specific structure of the detection component 3 includes a plate 301, which is detachably connected to the cover plate 2. In practice, the plate 301 and the cover plate 2 are connected by bolts. Several sensors 302 are mounted on the plate 301, and the position and orientation of the sensors 302 are adjustable to ensure the positioning accuracy of the temperature monitoring points. The detection component 3 can perform real-time temperature monitoring of the electrical connection points between the transverse copper busbar 6 and the longitudinal copper busbar 7. When a local abnormal temperature rise is detected, the system will automatically trigger an alarm mechanism to provide immediate early warning of the fault.

[0042] The detection component 3 also includes an inner ring 303. The two ends of the connecting beam 304 are connected to the inner ring 303 and the plate 301, respectively. Mounting holes 305 are formed in the inner ring 303, and the sensor 302 is disposed in the mounting holes 305. The connecting beams 304 are arc-shaped, and several connecting beams 304 are evenly distributed around the outer periphery of the inner ring 303.

[0043] When the angle and position of sensor 302 are adjusted, the connecting beam 304 undergoes controllable plastic deformation. This deformation changes the relative angle and position between the inner ring 303 and the plate 301, and consequently, the angle and position of sensor 302 on the inner ring 303 also change. The three-dimensional adjustment mechanism, consisting of the inner ring 303, the connecting beam 304, and the mounting hole 305, enables angle adjustment and fine-tuning of the sensor 302, ensuring the positioning accuracy of the temperature monitoring point.

[0044] In practice, the inner ring 303, connecting beam 304, and mounting hole 305 are all integrally formed by laser cutting, resulting in a simple structure and ease of processing. Sensor 302 is an infrared temperature sensor. An infrared temperature sensor is a non-contact temperature measurement device that operates based on the principle of thermal radiation from an object. Infrared temperature sensors enable non-contact temperature measurement.

[0045] The enclosure 1 is also equipped with an openable door panel 4, with a cover plate 2 located between the door panel 4 and the enclosure 1. The door panel 4 protects both the cover plate 2 and the components inside the enclosure 1. In use, the door panel 4 must be opened before the cover plate 2 can be opened. The door panel 4 has a transparent observation window. This transparent observation window design allows for visual inspection while maintaining protective performance.

[0046] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A photovoltaic energy storage cable branch box with fault alarm function, characterized in that, include: Box (1), and an alarm device (5) is provided on the box (1); A cover plate (2) is installed on the box body (1) in an openable and closable manner; Horizontal copper busbars (6) and vertical copper busbars (7) are installed inside the housing (1); A detection component (3) is disposed on the cover plate (2), and the detection component (3) detects the temperature at the connection between the transverse copper busbar (6) and the longitudinal copper busbar (7); The detection component (3) includes: The plate (301) is detachably connected to the cover plate (2); A sensor (302) is disposed on a plate (301), and the position and orientation of the sensor (302) are adjustable.

2. A photovoltaic energy storage cable branch box with fault alarm function according to claim 1, characterized in that, The detection component (3) further includes: Inner ring (303); Connecting beam (304), connecting inner ring (303) and plate (301); Mounting hole (305) is provided in inner ring (303), and sensor (302) is provided in mounting hole (305).

3. A photovoltaic energy storage cable branch box with fault alarm function according to claim 2, characterized in that, The connecting beam (304) is arc-shaped, and several connecting beams (304) are evenly distributed around the outer periphery of the inner ring (303).

4. A photovoltaic energy storage cable branch box with fault alarm function according to claim 3, characterized in that, The inner ring (303), connecting beam (304) and mounting hole (305) are all laser-cut.

5. A photovoltaic energy storage cable branch box with fault alarm function according to claim 1, characterized in that, The sensor (302) is an infrared temperature sensor.

6. A photovoltaic energy storage cable branch box with fault alarm function according to claim 1, characterized in that, The box (1) is also provided with an openable door panel (4).

7. A photovoltaic energy storage cable branch box with fault alarm function according to claim 6, characterized in that, A transparent observation window is provided on the door panel (4).

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