Relay unit and corresponding bus power distribution system

Abstract

The utility model provides a relay unit and a corresponding bus power distribution system, the relay unit is used for relaying and cascading a communication bus and a low-voltage DC power supply bus in two adjacent composite buses, the relay unit comprises an upper shell and a lower shell, and an accommodating space is formed between the upper shell and the lower shell. A main monitoring board assembly is arranged in the containing space and fixed to the right side of the lower shell, a spring needle on the upper portion of the main monitoring board assembly is connected with a low-voltage direct-current power source bus of the right side bus section, and a spring needle on the lower portion of the main monitoring board assembly is connected with a communication bus of the right side bus section. The upper spring needle is connected with the low-voltage direct-current power supply bus of the left bus section, and the lower spring needle is connected with the communication bus of the left bus section. According to the utility model, the main monitoring board assembly and the cascading board assembly both adopt the universal spring needle structure design, so that if other units in the power distribution system also need related power taking devices, the universal and modular design can be carried out, thereby reducing the cost and improving the production efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical power supply, in particular to a relay unit and a corresponding busbar power supply system. Background Art

[0002] The relay unit of the power distribution system is used for cascading the equipment power supply bus and the communication bus between two sections of composite bus. Both the equipment power supply bus and the communication bus can be controllably cascaded or disconnected on the relay device, and the temperature rise of the composite bus connector and the busbar vibration can be monitored.

[0003] However, the components in the relay units of the current busbar distribution system have poor commonality, that is, there are no components that are common to other units in the distribution system. The parts in each unit are unique. Once a unit has a problem, it needs to be repurchased, which is costly. In addition, the current relay units are difficult to disassemble and assemble. The existing technology is gradually not in line with the requirements of sustainable development. Summary of the invention

[0004] Purpose of the invention: In view of the problems existing in the above-mentioned prior art, the utility model constructs a relay unit. In addition, the utility model also proposes a busbar power distribution system based on the relay unit.

[0005] Technical solution: One aspect of the utility model provides a relay unit, which relays and cascades the communication bus and the low-voltage DC power supply bus in two adjacent composite bus sections, and includes an upper shell and a lower shell installed opposite to the upper shell, and an accommodating space is formed between the upper shell and the lower shell, and a main monitoring board assembly and a cascade board assembly are arranged in the accommodating space, the main monitoring board assembly is fixed on one side of the lower shell, and the cascade board assembly is fixed on the other side of the lower shell, the main monitoring board assembly and the cascade board assembly are electrically connected, and are respectively connected to the composite bus.

[0006] Further, including:

[0007] The two adjacent busbars are respectively recorded as composite busbar 1 and composite busbar 2, the main monitoring board assembly is connected to the composite busbar 2, and the cascade board assembly is connected to the composite busbar 1.

[0008] Further, including:

[0009] The cascade board assembly includes a cascade main board, a first mounting plate and a first spring pin group. The cascade main board is configured as a rectangle and is fixed to the lower shell through the first mounting plate. The lower end of the first spring pin group sequentially passes through the cascade main board, the first mounting plate and the lower shell and is connected to the composite busbar.

[0010] Further, including:

[0011] The first mounting plate includes two plates, which are respectively arranged at the two ends of the cascade main board, and include a horizontal plate. Positioning pieces are arranged at both ends of the horizontal plate, and the positioning pieces are connected to the cascade main board. A vertical groove is arranged at the lower middle part of the horizontal plate, and the notch of the vertical groove is connected to the horizontal plate. A plurality of first through holes are arranged at the bottom of the vertical groove, and the plurality of first through holes are arranged on both side walls of the vertical groove. A plurality of semicircular grooves are opened on both side walls of the vertical groove in the groove depth direction from the notch to the bottom of the groove, and the semicircular grooves are correspondingly connected with the first through holes, and the first spring needle group is inserted into the first through hole along the semicircular groove on the side wall.

[0012] Further, including:

[0013] The first spring pin groups include two, which are respectively installed at the two ends of the cascade mainboard, and the first spring pin groups at the two ends are respectively used to connect the low-voltage DC power bus and the communication bus in the composite bus.

[0014] Further, including:

[0015] The main monitoring board assembly includes a control board, a second mounting board and a second spring pin group. The control board is configured to be rectangular and is fixed to the lower shell through the second mounting board. The second spring pin group sequentially passes through the control board, the second mounting board and the lower shell and is connected to the composite busbar 2.

[0016] Further, including:

[0017] The second spring pin groups include two, which are respectively installed at two ends of the same side of the control board, and the second spring pin groups at the two ends are respectively used to connect the low-voltage DC power bus and the communication bus in the composite bus second.

[0018] Further, including:

[0019] It also includes a light guide column, which is installed on the upper shell through a fixing component. Correspondingly, the upper shell is provided with a second through hole, the upper end of the light guide column is partially exposed to the outside through the second through hole, and the lower end is connected to the main monitoring board assembly.

[0020] Further, including:

[0021] The fixing assembly includes a third mounting plate and a fastener, the fasteners are fixed at both ends of the third mounting plate, the fasteners fix the third mounting plate to the upper shell, a third through hole is opened in the middle of the third mounting plate, the light guide column is clamped in the third through hole, and its upper end passes through the second through hole.

[0022] On the other hand, the utility model also provides a busbar power distribution system, which includes several of the above-mentioned relay units, two adjacent sections of composite busbars and a connector, wherein the two adjacent sections of composite busbars are connected via the connector, and the relay unit is directly or indirectly connected to the two adjacent sections of composite busbars.

[0023] Beneficial effects:

[0024] (1) The main monitoring board assembly and the cascade board assembly described in the present invention are both designed with a universal spring pin structure. Therefore, if other units in the power distribution system also have related power supply devices, they can be designed in a universal and modular manner and spliced ​​according to needs. Specifically, in the power distribution system, there are power supply devices in the power supply unit, cascade unit and output unit. The universal design of the present invention can reduce costs in production and application, thereby improving production efficiency.

[0025] (2) The utility model adopts two boards and can adapt to different busbar spacings, that is, only the length of the connecting line between the two boards needs to be modified to adapt to different busbars, thereby reducing costs to the greatest extent.

[0026] (3) The relay unit of the utility model is provided with knob plungers on both sides, which can be fixed or loosened from the busbar by simply rotating it;

[0027] (4) The relay unit of the utility model is designed with a light guide column, which can be used to indicate the status information of the sensor, thereby improving the visualization and safety factor;

[0028] (5) The relay unit of the present application has a built-in temperature rise monitoring sensor, which can realize the temperature rise monitoring of the busbar and improve the safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 It is a structural schematic diagram of the relay unit described in the embodiment of the utility model;

[0031] Figure 2 This is a schematic diagram of the structure after the upper shell is removed according to the embodiment of the utility model;

[0032] Figure 3 It is a structural schematic diagram of the main monitoring board assembly according to an embodiment of the utility model;

[0033] Figure 4 This is a schematic diagram of the structure of the cascade plate assembly described in the embodiment of the utility model

[0034] Figure 5 It is a structural schematic diagram of the first mounting plate described in an embodiment of the utility model;

[0035] Figure 6 This is a schematic structural diagram of the first mounting plate according to an embodiment of the utility model from another angle;

[0036] Figure 7 It is a schematic diagram of the connection structure of the communication bus, the low-voltage DC power bus and the connector according to the embodiment of the utility model;

[0037] Figure 8 It is a structural schematic diagram of the busbar power distribution system described in the embodiment of the utility model;

[0038] Among them, the figure includes: a relay unit 100, a composite busbar 1 200, a connector 300, a composite busbar 2 400, an upper shell 1, a card board 11, a second through hole 12, a lower shell 2, a main monitoring board assembly 3, a control board 31, a second mounting board 32, a second spring pin group 33, a cascade board assembly 4, a cascade main board 41, a first mounting board 42, a horizontal board 421, a positioning piece 422, a vertical groove 423, a first through hole 424, a semicircular groove 425, a first spring pin group 43, a back plate 5, a knob plunger 6, a temperature sensor 7, a light guide column 8, a fixing assembly 9, a boss 10, a third mounting plate 91, a third through hole 911, and a fastener 92. DETAILED DESCRIPTION

[0039] In order to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0040] See also Figure 1 As shown, an embodiment of the utility model provides a relay unit 100 in a power distribution bus system, which is used for cascading the communication bus 200 and the low-voltage DC power bus 300 in the composite bus. Both the equipment power bus and the communication bus can be controllably cascaded or disconnected on the relay unit; the relay unit integrates a temperature sensor and a three-axis acceleration sensor to monitor the temperature rise of the bus connector and the busbar vibration. All monitoring data of this relay unit can be uploaded to the local monitoring screen and the data center dynamic ring system. In this embodiment, the low-voltage DC power bus is a DC24V bus.

[0041] Specifically, in this embodiment, Figure 2As shown, the relay unit 100 includes an upper shell 1 and a lower shell 2 installed opposite to the upper shell 1, and an accommodating space is formed between the upper shell 1 and the lower shell 2. A main monitoring board assembly 3 and a cascade board assembly 4 are arranged in the accommodating space. The main monitoring board assembly 3 is fixed on the right side of the lower shell 2, and is connected to the low-voltage DC power bus and the communication bus in the right composite bus. The cascade board assembly 4 is fixed on the left side of the lower shell 2, and is connected to the low-voltage DC power bus and the communication bus in the left composite bus. The main monitoring board assembly 2 and the cascade board 4 assembly are electrically connected. Specifically, in the present application, the main monitoring board assembly 3 and the cascade board assembly 4 can be connected by two cables. In this embodiment, two adjacent sections of the composite bus are as shown in FIG. Figure 7 As shown, the busbar section on the left side of the connector is marked as composite busbar 1, which is also provided with modules such as power supply module, collection module and starting box, and the busbar section on the right side of the connector is marked as composite busbar 2, which is installed with output unit.

[0042] The connector 300 is used to connect adjacent composite busbars 1 and 2, and the lower shell 2 is installed on the connector 300 and part of the adjacent composite busbars 1 and 2.

[0043] In this application, the relay of the communication bus refers to the circuit on the main control board that realizes the reading and regeneration of the signals on the left and right sides, that is, the signal relay amplification function, and realizes cascading through two-way transmission performance; the so-called low-voltage DC power supply relay function means that the main control board is equipped with a relay, which can connect or disconnect the low-voltage DC power supply bus on both sides.

[0044] In this embodiment, the lower shell 2 completely covers the connector 400, and the two ends respectively cover part of the composite busbar 1 and the composite busbar 2. The cascade board assembly 4 is fixed on one side of the lower shell 2 and connected to the DC24V busbar and the communication busbar, and the main monitoring board assembly 3 is fixed on the other side of the lower shell 2 and connected to the communication busbar and the DC24V busbar.

[0045] Furthermore, in this embodiment, backplates 5 are provided on both sides of two adjacent busbar sections, and the length of the backplate 5 is set to cover the connector 300 and the composite busbar portion near the connector 300. Specifically, the length of the backplate 5 along the length direction of the busbar body is set according to the length of the lower shell 2, and the two sides of the upper shell 1 extend outward to form a card plate 11, and the two card plates 11 are respectively straddled on the outer sides of the corresponding backplates 5, and the card plates 11 and the backplates 5 are fixedly installed by the knob plunger 6, that is, the knob plunger 6 fixes the card plate 11 and the backplate 5, and rotating the knob plunger 6 can tighten or loosen the distance between the two.

[0046] Further, in this embodiment, if Figure 4As shown, the cascade board assembly 4 specifically includes a cascade main board 41, a first mounting plate 42 and a first spring needle group 43. The cascade main board 41 is set to a rectangle and is fixed to the lower shell 2 through the first mounting plate 42. The lower end of the first spring needle group 43 passes through the cascade main board 41, the first mounting plate 42 and the lower shell 2 in sequence and is connected to the composite busbar 200. Specifically, the first mounting plate 42 and the first spring needle group 43 of the present application each include two, which are respectively arranged at both ends of the cascade main board 41 to attach Figure 7 The angle is in the positive direction, the upper first spring pin group 43 is connected to the low-voltage DC power bus of one section of the composite bus, and the lower first spring pin is connected to the communication bus of the left bus section.

[0047] like Figure 5 and 6 As shown, the first mounting plate 42 includes two middle parts respectively arranged at the two ends of the cascade main board 41, so that the cascade main board 41 is fixed on both sides of the width direction of the composite busbar 200, and the first mounting plate 42 includes a horizontal plate 421, and positioning members 422 are arranged at both ends of the horizontal plate 421. The positioning members 422 can be cylindrical fixing studs, and the positioning members 422 abut against the cascade main board 41. A vertical groove 423 is arranged below the middle part of the horizontal plate 421, and the notch of the vertical groove 423 is connected to the horizontal plate 421, and the notch is arranged in a rectangular shape. A plurality of first through holes 424 are arranged at the bottom of the vertical groove 423, and the plurality of first through holes 424 are arranged on the side walls of the vertical groove 423, and the first through holes 424 are arranged on a boss 10 with a certain height, and the boss 10 is arranged from the bottom of the groove to the notch direction, and its purpose is to increase the depth of the through hole, thereby improving the positioning ability of the first spring pin 43 and making its clamping more stable.

[0048] Furthermore, a plurality of semicircular grooves 425 are provided on the side walls of the vertical groove 423 in the groove depth direction from the groove opening to the groove bottom, and the semicircular grooves 425 are correspondingly connected with the first through hole 424. The first spring pin group 43 is inserted into the first through hole 424 along the semicircular grooves 425 on the side walls and connected to the busbar. The other end of the first spring pin group 43 is plugged into the cascade motherboard 41. The corresponding design of the semicircular grooves 425 and the first through hole 424 increases the positioning of the spring pin and makes it more stable.

[0049] In the present application, four semicircular grooves 425 and corresponding first through holes 424 may be designed on both sides of the vertical groove 423 , that is, there are eight spring pins in the first spring pin group 43 , which are positioned in the vertical groove 423 .

[0050] Further, in this embodiment, if Figure 3As shown, the main monitoring board assembly 3 includes a control board 31, a second mounting board 32 and a second spring needle group 33. The control board 31 is set to a rectangular shape and is fixed to the lower shell 2 through the second mounting board 32. The second mounting board 32 includes two, which are respectively mounted on the two ends of the same side of the control board 31 close to the composite busbar 2. Therefore, the second spring needle group 33 is also set in the same way as the second mounting board 32. The lower end of the second spring needle group 33 passes through the control board 31 and the second mounting board 32 in sequence and is connected to the composite busbar 2 to attach Figure 7 The direction is taken as the positive direction, the second spring pin group on the upper part is connected to the low voltage DC power bus of the composite bus 2, and the spring pin on the lower part is connected to the communication bus of the composite bus 2. In addition, the two ends of the control board 31 on the same side close to the connector 300 are fixed to the lower shell 2 by pressure riveting studs.

[0051] In the present application, the structures of the first mounting plate 42 and the second mounting plate 32 are similar and will not be described in detail herein.

[0052] The control board 31 must also include basic storage functions, relay functions, equipment power supply relay functions, built-in self-recovery fuses and isolation relays, which can automatically shield faults and improve the driving ability and signal quality of the communication bus. It will not be described in detail in this solution.

[0053] Furthermore, the main monitoring board assembly 3 and the cascade board assembly 4 are both modular and universally designed, and adopt a universal spring pin structure. Such universal design greatly reduces costs and improves production efficiency.

[0054] Furthermore, in this embodiment, a plurality of temperature sensors 7 are also included, which are all mounted on the control board 31 and inserted into the connector 300 through the lower shell 2. In this application, four temperature sensors 7 are provided, and each temperature sensor 7 is sheathed with an insulating film on the periphery, which is used to monitor the temperature of the busbar in real time and safely, which significantly improves the practicability and facilitates popularization and application.

[0055] Furthermore, in this embodiment, a light guide column 8 is also included, which is installed on the upper shell 1 through a fixing component 9. Correspondingly, the upper shell 1 is provided with a second through hole 12. One end of the light guide column 8 is partially exposed to the outside through the second through hole 12, and the other end is fixed on the control board 31. The light guide column 8 can be used to indicate the status information of the sensor, thereby improving the visualization and safety factor.

[0056] The fixing assembly 9 includes a third mounting plate 91 and a fastener 92. The fasteners 92 are fixed at both ends of the third mounting plate 91. The fasteners 92 are riveted studs. The fasteners 92 fix the third mounting plate 91 to the upper shell 1. A third through hole 911 is opened in the middle of the third mounting plate 91. The light guide column 8 is clamped in the third through hole 911, and its upper end passes through the second through hole 12.

[0057] The utility model also provides a busbar power distribution system, such as Figure 7 and 8 As shown, it includes the above-mentioned relay unit 100, two adjacent sections of composite bus, namely composite bus 1 200 and composite bus 2 400, and a connector 300, wherein the two adjacent sections of composite bus are connected via the connector 300, and the relay unit 100 is directly or indirectly connected to the composite bus 200, wherein the composite bus integrates a power supply bus, a low-voltage DC power supply bus and a communication bus, and the relay unit can be installed and used in the system, is safe and convenient, and has strong scalability.

[0058] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0059] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, if these modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A relay unit, which relays and cascades a communication bus and a low-voltage DC power bus in two adjacent composite bus sections, characterized in that: The invention comprises an upper shell (1) and a lower shell (2) mounted opposite to the upper shell (1); a housing space is formed between the upper shell (1) and the lower shell (2); a main monitoring board assembly (3) and a cascade board assembly (4) are arranged in the housing space; the main monitoring board assembly (3) is fixed on one side of the lower shell (2); the cascade board assembly (4) is fixed on the other side of the lower shell (2); the main monitoring board assembly (3) and the cascade board assembly (4) are electrically connected and are respectively connected to a composite busbar.

2. The relay unit according to claim 1, characterized in that: The two adjacent composite busbars are connected by a connector (300); the composite busbar on the left side of the connector (300) is denoted as composite busbar one (200); the composite busbar on the right side of the connector (300) is denoted as composite busbar two (400); the main monitoring board assembly (3) is connected to the composite busbar two (400); and the cascade board assembly (4) is connected to the composite busbar one (200).

3. The relay unit according to claim 2, characterized in that: The cascade board assembly (4) comprises a cascade main board (41), a first mounting board (42) and a first spring pin group (43); the cascade main board (41) is arranged in a rectangular shape and is fixed to the lower shell (2) via the first mounting board (42); the lower end of the first spring pin group (43) passes through the cascade main board (41), the first mounting board (42) and the lower shell (2) in sequence and is connected to the composite busbar 1 (200).

4. The relay unit according to claim 3, characterized in that: The first mounting plate (42) includes two plates, which are respectively arranged at two ends of the cascade main board (41), and include a horizontal plate (421). Positioning members (422) are arranged at both ends of the horizontal plate (421). The positioning members (422) are connected to the cascade main board (41). A vertical groove (423) is arranged at the lower middle part of the horizontal plate (421). The notch of the vertical groove (423) is connected to the horizontal plate. ) is provided with a plurality of first through holes (424) at the bottom of the groove, and the plurality of first through holes (424) are all provided on the side walls on both sides of the vertical groove (423), and a plurality of semicircular grooves (425) are provided on the side walls on both sides of the vertical groove (423) in the groove depth direction from the groove mouth to the groove bottom, and the semicircular grooves (425) are correspondingly connected with the first through holes (424), and the first spring needle group (43) is inserted into the first through hole (424) along the semicircular grooves (425) on the side walls.

5. The relay unit according to claim 3, characterized in that: The first spring pin groups (43) include two, which are respectively installed at two ends of the cascade main board (41), and the first spring pin groups (43) at the two ends are respectively used to connect the low-voltage DC power bus and the communication bus in the composite bus one (200).

6. The relay unit according to claim 2, characterized in that: The main monitoring board assembly (3) comprises a control board (31), a second mounting board (32) and a second spring pin group (33); the control board (31) is arranged in a rectangular shape and is fixed on the lower shell (2) via the second mounting board (32); the second spring pin group (33) passes through the control board (31), the second mounting board (32) and the lower shell (2) in sequence and is connected to the composite busbar 2 (400).

7. The relay unit according to claim 6, characterized in that: The second spring needle group (33) comprises two, which are respectively installed at two ends of the same side of the control board (31), and the second spring needle groups (33) at the two ends are respectively used to connect the low-voltage DC power bus and the communication bus in the composite bus second (400).

8. The relay unit according to claim 1, characterized in that: It also includes a light guide column (8), which is installed on the upper shell (1) through a fixing component (9); correspondingly, the upper shell (1) is provided with a second through hole (12); the upper end of the light guide column (8) is partially exposed to the outside through the second through hole (12), and the lower end is connected to the main monitoring board component (3).

9. The relay unit according to claim 8, characterized in that: The fixing assembly (9) comprises a third mounting plate (91) and a fastener (92), the fasteners (92) being fixed at both ends of the third mounting plate (91), the fasteners (92) fixing the third mounting plate (91) to the upper shell (1), a third through hole (911) being provided in the middle of the third mounting plate (91), the light guide column (8) being clamped in the third through hole (911), and the upper end of the light guide column (8) passing through the second through hole (12).

10. A busbar power distribution system, characterized in that: It comprises a plurality of relay units (100) as described in any one of claims 1 to 9, two adjacent sections of composite busbars and a connector (300), wherein the two adjacent sections of composite busbars are connected via the connector (300), and the relay unit (100) is directly or indirectly connected to the two adjacent sections of composite busbars.

Images