PLC (Programmable Logic Controller) integrated control box of direct-current confluence cabinet

Abstract

The utility model relates to a direct current confluence cabinet PLC integrated control box which comprises a box body, a cover plate, a guide rail installed on the bottom wall of the box body and an installation part installed on the side wall of the box body. The mounting plate sequentially comprises an actuator control area, an actuator feedback area, a power supply and communication area, a current acquisition monitoring area and a voltage acquisition monitoring area; a processor and a processing module are slidably connected to the guide rail. And a grounding copper bar is mounted on the wire shielding plate. The device is independently arranged in the direct-current convergence system, and transmits a signal into a battery management system cabinet in a communication mode, so that a high-voltage signal in the direct-current convergence system cannot be introduced into the battery management system cabinet, and the direct-current convergence system signal can be more safely and reliably acquired and the action of a control component can be more safely and reliably acquired.

Description

Technical Field

[0001] This application relates to the field of flow batteries, and particularly to a DC busbar cabinet PLC integrated control box. Background Art

[0002] The flow battery energy storage system is a new type of electrochemical energy storage device. It can not only be used as an energy storage device supporting the solar and wind power generation processes, smooth the fluctuations of renewable energy power generation, and ensure the stable power supply of the renewable energy power generation system; but also be used for power grid peak shaving, improve the power grid stability, and ensure the power grid safety.

[0003] In the flow battery management system, the DC busbar system is the channel for the flow battery to absorb or generate electric energy from the power grid. To ensure the safety of the flow battery energy storage system and the power grid, it is necessary to control the on / off and collect the status feedback of protective electrical appliances such as circuit breakers, contactors, and fuses in the DC busbar system; and it is particularly important to monitor the charging and discharging voltage / current in real time. Most of the existing DC busbar systems centrally arrange the control and data acquisition components in the battery management system cabinet.

[0004] For the above related technologies, it will cause high-voltage signals in the DC busbar system to be introduced into the battery management system cabinet, resulting in the weak electrical signals in the battery management system being easily interfered, and the wiring is complicated. Utility Model Content

[0005] In order to solve the above technical problems, a DC busbar cabinet PLC integrated control box provided by this application adopts the following technical solutions:

[0006] A DC busbar cabinet PLC integrated control box includes a box body and a cover plate. The box body includes a bottom wall and four side walls connected end to end, and the cover plate is installed on the four side walls; it also includes a guide rail installed on the bottom wall of the box body and an installation part installed on the side wall of the box body. There is a gap for wire routing between the installation part and the bottom wall; the installation part includes an installation plate arranged in a plate shape and a wire shielding plate. The wire shielding plate is fixedly connected to the upper end of the installation plate and is perpendicular to each other. The installation plate is vertically arranged, and the wire shielding plate is horizontally arranged; the installation plate sequentially includes an actuator control area, an actuator feedback area, a power supply and communication area, a current acquisition and monitoring area, and a voltage acquisition and monitoring area; a processor and a processing module are slidably connected to the guide rail; a grounding copper bar is installed on the wire shielding plate; corresponding models of terminal blocks are installed in the actuator control area, the actuator feedback area, the power supply and communication area, the current acquisition and monitoring area, and the voltage acquisition and monitoring area.

[0007] Preferably, the guide rail includes a flat plate abutting against the bottom wall of the box body, a vertical plate for hanging the processor and the processing module, and a horizontal plate connecting the flat plate and the vertical plate. A plurality of installation holes are opened on the flat plate, and three support rods are installed on the bottom plate of the box body, and the support rods are embedded in the installation holes.

[0008] Preferably, the minimum distance between the flat plate and the vertical plate is greater than the length of the support rod.

[0009] Preferably, two support rods close to each other are fixedly connected to the box body, and the other support rod is slidably connected to the box body. A chute for avoiding the support rod and a limiting groove communicating with the chute are formed on the bottom wall of the box body. A slider is embedded in the limiting groove, and the slider is fixedly connected to the support rod. The limiting groove and the chute extend along the length direction of the guide rail. The slider is fixedly connected with a spring, and one end of the spring away from the slider is fixedly connected to the side wall of the limiting groove. Under the action of the spring force, the support rod abuts against the side wall of the mounting hole.

[0010] Preferably, notches for embedding the guide rail are formed on the mutually approaching side surfaces of the two support rods with the farthest distance.

[0011] Preferably, the cover plate includes an upper cover plate, a lower cover plate, and a lapping plate fixedly connected to the upper cover plate. Bolts are passed through the lapping plate, and the bolts are simultaneously passed through the lower cover plate. The lower cover plate faces the mounting plate.

[0012] Preferably, the installation part further includes a flanging, and bolts are passed through the side wall of the box body, and the bolts are simultaneously passed through the flanging.

[0013] Preferably, four ear plates are installed on the side wall of the box body.

[0014] In summary, the present application includes at least one of the following beneficial technical effects:

[0015] 1. The signal acquisition control box of the DC busbar system in the present application is independently arranged in the DC busbar system and transmits signals to the battery management system cabinet through communication, so that the high-voltage signals in the DC busbar system will not be introduced into the battery management system cabinet, and the signals of the DC busbar system can be collected more safely and reliably and the control components can be actuated;

[0016] 2. The wiring personnel only need to connect one side of the pre-made cable to the control, feedback, and monitoring points reserved in the liquid flow battery DC system, and the other side is inserted into the corresponding terminal. The corresponding terminals are distributed in the corresponding areas, which is not easy to connect wrongly and can be quickly matched. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the overall structural schematic diagram of the embodiment of the present application;

[0018] Figure 2 is the partial structural schematic diagram of the embodiment of the present application;

[0019] Figure 3 is the overall structural schematic diagram of the box body;

[0020] Figure 4 is Figure 3Enlarged view of part A

[0021] Figure 5 It is a schematic diagram of the overall structure of the guide rail

[0022] Figure 6 It is a schematic diagram of the overall structure of the installation part

[0023] Figure 7 It is a schematic diagram of the overall structure of the cover plate

[0024] Explanation of reference numerals: 1, box body; 11, main body; 111, sliding groove; 112, limiting groove; 12, connecting plate; 13, support rod; 131, notch; 14, slider; 15, spring; 2, cover plate; 21, upper cover plate; 22, lower cover plate; 221, wire inlet; 23, overlapping plate; 3, ear plate; 4, guide rail; 41, flat plate; 411, mounting hole; 42, vertical plate; 43, horizontal plate; 5, installation part; 51, mounting plate; 52, flanging; 53, fixing plate; 54, overlapping edge; 55, wire shielding plate; 56, side plate; 6, processor; 7, processing module; 8, grounding copper bar; S1, actuator control area; S2, actuator feedback area; S3, power supply and communication area; S4, current acquisition and monitoring area; S5, voltage acquisition and monitoring area Detailed implementation manners

[0025] The following further elaborates on this application in conjunction with the attached Figure 1-7 for a more detailed description of this application

[0026] This embodiment of the application discloses a DC busbar cabinet PLC integrated control box. Referring to Figure 1 、 Figure 2 ,a DC busbar cabinet PLC integrated control box includes a box body 1, a cover plate 2, a guide rail 4 located inside the box body 1, a processor 6 and a processing module 7 slidably connected to the guide rail 4, an installation part 5 installed inside the box body 1, a terminal block installed on the installation part 5, and a grounding copper bar 8

[0027] Refer to Figure 2 、 Figure 3 、 Figure 4The box body 1 includes a bottom wall in the shape of a plate and four side walls welded together end to end. Three support rods 13 are arranged on the bottom wall. The three support rods 13 are equidistantly arranged. Two support rods 13 close to each other on the left side are welded on the bottom wall. The support rod 13 on the right side is in a slidable state. A slide groove 111 and a limiting groove 112 connected to the slide groove 111 are opened in the bottom wall area where the slidable support rod 13 are located. The groove width of the limiting groove 112 is greater than the groove width of the slide groove 111. A slider 14 is embedded in the limiting groove 112. The slider 14 is fixedly connected to the support rod 13. The width of the slider 14 is greater than the diameter of the support rod 13. The limiting groove 112 and the slide groove 111 extend along the length direction of the guide rail 4. The slider 14 is fixedly connected to a spring 15. The spring 15 is fixedly connected to the side wall of the limiting groove 112 at one end away from the slider 14. Under the elastic force of the spring 15, the support rod 13 approaches the middle support rod 13. A notch 131 is formed on the cylindrical side walls of the two outer support rods 13 that are close to each other.

[0028] refer to Figure 3 , Figure 4 , Figure 5 The guide rail 4 includes a flat plate 41 made of a steel plate. The flat plate 41 is in a rectangular parallelepiped shape. Two horizontal plates 43 are welded on the upper and lower sides of the flat plate 41. The horizontal plate 43 is perpendicular to the flat plate 41. A vertical plate 42 is welded on the edge of the horizontal plate 43 away from the flat plate 41. The vertical plate 42 is parallel to the flat plate 41. A plurality of equidistantly arranged mounting holes 411 are opened on the flat plate 41. The mounting holes 411 are oblong holes. The width of the horizontal plate 43 is greater than the length of the support rod 13.

[0029] During operation, first align the mounting hole 411 on the guide rail 4 with the two fixed support rods 13, and clamp the notch 131 of the left support rod 13 on the side wall of the mounting hole 411, then move the slidable support rod 13, compress the spring 15 to make the support rod 13 enter the mounting hole 411, and under the action of the spring 15, the notch 131 on the support rod 13 is close to the side wall of the mounting hole 411, and the flat plate 41 is clamped between the two notches 131 and is not easy to fall off.

[0030] refer to Figure 2 , Figure 6, the installation part 5 includes an installation plate 51. The installation plate 51 is a rectangular sheet steel plate. A number of relief grooves and corresponding threaded holes for installing terminal blocks are provided on the installation plate 51. Side plates 56 are welded to the edges of the installation plate 51. The two side plates 56 are perpendicular to the installation plate 51 and are located on the same side of the installation plate 51. Lap joints 54 are welded to the edges of the two installation plates 51 that are close to each other. The lap joints 54 are plate-shaped and are perpendicular to both the side plates 56 and the installation plate 51 at the same time. A wire shielding plate 55 is supported on the lap joints 54. Bolts are screwed onto the wire shielding plate 55 and are simultaneously screwed onto the lap joints 54. Fixing plates 53 are welded to the edges of the side plates 56 that are far from the installation plate 51. The fixing plates 53 are parallel to the side plates 56 and the installation plate 51 and are perpendicular to the lap joints 54. Flanges 52 are welded to the edges of the ends of the fixing plates 53 that are far from the side plates 56. The flanges 52 are rectangular steel plates.

[0031] During operation, the installation part 5 is pushed into the box body 1. The installation part 5 is supported by the side wall of the box body 1 whose length direction is parallel to the guide rail 4. The two flanges 52 are in tight contact with the opposite two side walls. Bolts are driven from the outside of the side wall of the box body 1 and are simultaneously screwed into the threaded holes of the flanges 52, so that the installation part 5 and the box body 1 are fixedly connected. In order to facilitate the connection of the cables and terminal blocks connected to the processor 6 and the processing module 7, a gap is left between the wire shielding plate 55 and the bottom wall of the box body 1, that is, the wire shielding plate 55 is not in tight contact with the bottom wall of the box body 1.

[0032] Reference Figure 2 、 Figure 5 、 Figure 6 , the end face of the installation plate 51 that is far from the bottom wall of the box body 1 is sequentially divided into an actuator control area S1, an actuator feedback area S2, a power supply and communication area S3, a current acquisition and monitoring area S4, and a voltage acquisition and monitoring area S5 from left to right. Corresponding terminal blocks are installed in the corresponding areas. The grounding copper bar 8 is installed at the middle position of the upper end of the wire shielding plate 55. Corresponding card slots are provided on the processor 6 and the processing module 7, and the two slide on the vertical plate 42 of the guide rail 4 through the card slots.

[0033] Reference Figure 7 , the cover plate 2 is made of transparent plastic. The cover plate 2 includes an upper cover plate 21 and a lower cover plate 22. A lap plate 23 is fixedly connected to the inner side of the upper cover plate 21. Bolts are passed through the lap plate 23 and are simultaneously passed through the lower cover plate 222 to fix the two. The length and width of the lower cover plate 222 are similar to the size of the installation plate 51. Two wire inlet openings 221 for wire routing are provided at the lower end of the lower cover plate 22.

[0034] Reference Figure 1 、 Figure 3 、 Figure 7, a connecting plate 12 composed of three connected sections is installed on the side wall of the box body 1. The inner side of the connecting plate 12 is on the same horizontal plane as the inner wall of the side wall of the box body 1. However, the thickness of the connecting plate 12 is less than that of the side wall, which results in the connecting plate 12 being lower than the outer side of the side wall of the box body 1, enabling the cover plate 2 to be sleeved on the connecting plate 12 and the cover plate 2 and the outside of the side wall of the box body 1 to be on the same plane. The box body 1 and the cover plate 2 are fixed by bolts.

[0035] Reference Figure 1 , four ear plates 3 are installed on the side wall. Two ear plates 3 form a group, and the two groups of ear plates 3 are installed on the opposite side walls. The box body 1 is fixed to the wall through the ear plates 3.

[0036] The above are all the preferred embodiments of this application. The protection scope of this application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A PLC integrated control box for a DC busbar cabinet, characterized in that: It includes a box body (1) and a cover plate (2). The box body (1) includes a bottom wall and four side walls connected end to end. The cover plate (2) is installed on the four side walls. It also includes a guide rail (4) installed on the bottom wall of the box body (1) and a mounting part (5) installed on the side wall of the box body (1). A gap for wire routing is provided between the mounting part (5) and the bottom wall. The mounting part (5) includes a mounting plate (51) and a wire shielding plate (55) arranged in a plate shape. The wire shielding plate (55) is fixedly connected to the upper end of the mounting plate (51) and is perpendicular to each other. The mounting plate (51) is arranged vertically, and the wire shielding plate (55) is arranged horizontally. The mounting plate (51) successively includes an actuator control area (S1), an actuator feedback area (S2), a power supply and communication area (S3), a current acquisition and monitoring area (S4), and a voltage acquisition and monitoring area (S5). A processor (6) and a processing module (7) are slidably connected to the guide rail (4). A grounding copper bar (8) is installed on the wire shielding plate (55). Corresponding types of terminal blocks are installed in the actuator control area (S1), the actuator feedback area (S2), the power supply and communication area (S3), the current acquisition and monitoring area (S4), and the voltage acquisition and monitoring area (S5).

2. The PLC integrated control box of a DC busbar cabinet according to claim 1, characterized in that: The guide rail (4) includes a flat plate (41) abutting against the bottom wall of the box body (1), a vertical plate (42) for hanging the processor (6) and the processing module (7), and a cross plate (43) connecting the flat plate (41) and the vertical plate (42). A plurality of mounting holes (411) are formed in the flat plate (41). Three support rods (13) are installed on the bottom plate of the box body (1), and the support rods (13) are embedded in the mounting holes (411).

3. The PLC integrated control box of a DC busbar cabinet according to claim 2, characterized in that: The minimum distance between the flat plate (41) and the vertical plate (42) is greater than the length of the support rod (13).

4. The PLC integrated control box of a DC busbar cabinet according to claim 3, characterized in that: Two adjacent support rods (13) are fixedly connected to the box body (1), and the other support rod (13) is slidably connected to the box body (1). A chute (111) for avoiding the support rod (13) and a limit groove (112) communicating with the chute (111) are formed in the bottom wall of the box body (1). A slider (14) is embedded in the limit groove (112), and the slider (14) is fixedly connected to the support rod (13). The limit groove (112) and the chute (111) extend along the length direction of the guide rail (4). The slider (14) is fixedly connected to a spring (15). One end of the spring (15) away from the slider (14) is fixedly connected to the side wall of the limit groove (112). Under the elastic force of the spring (15), the support rod (13) abuts against the side wall of the mounting hole (411).

5. A PLC integrated control box for a DC busbar cabinet according to claim 4, characterized in that: Notches (131) for embedding the guide rail (4) are formed on the mutually approaching side surfaces of the two support rods (13) with the farthest interval.

6. The PLC integrated control box of a DC busbar cabinet according to claim 5, characterized in that: The cover plate (2) includes an upper cover plate (21) and a lower cover plate (22), and a lapping plate (23) fixedly connected to the upper cover plate (21). Bolts are passed through the lapping plate (23), and the bolts also pass through the lower cover plate (22). The lower cover plate (22) faces the mounting plate (51).

7. The PLC integrated control box of a DC busbar cabinet according to claim 6, characterized in that: The mounting part (5) further includes a flange (52), and a bolt passes through the side wall of the box body (1) and also passes through the flange (52).

8. The PLC integrated control box of a DC busbar cabinet according to claim 7, characterized in that: Four ear plates (3) are mounted on the side wall of the box body (1).

Images