Electric control hub island

Abstract

The utility model relates to an electric control hub island, which comprises a confluence board, a plurality of controlled elements and an output controller, a centralized control board is arranged in the confluence board, the centralized control board is provided with a main input connector and a plurality of branch output connectors, the confluence board is provided with ports corresponding to the connectors, and the plurality of controlled elements and the plurality of branch output connectors are in one-to-one plug-in connection; the output controller comprises a control box and a circuit board module arranged in the control box, the control box is provided with a power supply access element, a network cable jack, a total output connector and a rotary coding switch which are all electrically connected with the circuit board module, and the total output connector is in plug-in connection with the total input connector; the rotary coding switch can generate a plurality of coding values, and the circuit board module establishes communication connection with a specific controlled element in the plurality of controlled elements based on the different coding values generated by the rotary coding switch. The connection between the output controller and the bus board is facilitated; and the output controller has a function of distributing a unique communication address for each accessed controlled element.

Description

Technical Field

[0001] The present invention relates to the field of industrial automation control equipment, and particularly to an electric control hub island. Background Art

[0002] A valve island is a control component composed of multiple electric control valves. It integrates signal input / output and signal control, just like a control island. The valve island is a new generation of pneumatic and electric integrated control component, which has developed from the initial valve island with multi-pin interfaces to the valve island with fieldbus, and then programmable valve islands and modular valve islands have emerged. For example, an integrated valve island device disclosed in CN219510239U lacks the function of assigning a unique communication address to each connected solenoid valve. When multiple solenoid valves are connected simultaneously, due to the lack of address identification, it is difficult for the integrated base to quickly distinguish and identify different solenoid valves, resulting in the control instructions sent by the controller being unable to be accurately transmitted to the corresponding solenoid valve. This not only causes control delay, but also easily leads to problems such as misoperation of the solenoid valve, seriously interfering with the production rhythm, and even may cause equipment failures or safety accidents, greatly affecting the stability and safety of industrial automation production. Content of the Utility Model

[0003] Objective of the present utility model: In order to overcome the defects of the prior art, the present utility model provides an electric control hub island, which facilitates the connection between the output controller and the busbar; and the output controller has the function of assigning a unique communication address to each connected controlled component.

[0004] Technical solution of the present utility model: An electric control hub island includes a busbar, a plurality of controlled components installed on the busbar, and an output controller. A centralized control board is arranged inside the busbar. There is a total input connector and a plurality of sub-output connectors on the centralized control board. The busbar has ports corresponding to the total input connector and the sub-output connectors. A plurality of controlled components are inserted and connected to the plurality of sub-output connectors one by one;

[0005] The output controller includes a control box and a circuit board module arranged inside the control box. A power access component, a network cable socket, a total output connector and a rotary encoder switch are arranged on the control box, and are all electrically connected to the circuit board module. The total output connector is inserted and connected to the total input connector; the rotary encoder switch can generate a variety of coding values. Among them, the circuit board module establishes a communication connection with a specific controlled component among the plurality of controlled components based on the different coding values generated by the rotary encoder switch.

[0006] By adopting the above technical solution, the electric control hub island of the present utility model not only realizes the efficient management and flexible control of a plurality of controlled components, but also greatly simplifies the installation and connection process.

[0007] The one-to-one connection between the controlled element and the branch output connector; the plug-in connection between the main output connector and the main input connector adopts the plug-in connection method, which makes the connection process convenient and quick, without the need for complicated wiring steps, greatly reducing the difficulty and cost of installation.

[0008] By setting the code of the rotary coding switch, a unique communication address is assigned to each controlled component to avoid command confusion and achieve precise control; at the same time, it supports independent monitoring and management of multiple devices, significantly improving the control efficiency and accuracy of industrial automation production and reducing the risk of misoperation. This switch can quickly set the code and is often used in situations where frequent code adjustments are required. In addition, the components of the controller have clear division of labor and work closely together: the power supply access component supplies power, the network cable socket transmits data, and the output connector outputs control signals, which work together with the electronic control module to complete the control of the controlled components, which is in line with the working logic of conventional controllers.

[0009] The utility model is further configured as follows: the controlled element is a solenoid valve, an electromagnet or a relay.

[0010] With the above further configuration, the selection of these controlled components enables the electric control hub island to be widely used in industrial automation control systems, such as liquid pipeline control, mechanical equipment drive, circuit on-off control, etc. The solenoid valve is used to control the flow of liquid media and is suitable for occasions where the flow or direction of liquid needs to be accurately controlled; the electromagnet is used to drive mechanical equipment, such as suction cups, clamps, etc., to achieve operations such as grabbing and moving objects; the relay is used for circuit on-off control to ensure the safe and reliable operation of the circuit. By selecting different types of controlled components, the electric control hub island of the utility model can meet the needs of different industrial automation control systems and achieve efficient and flexible control.

[0011] The utility model is further configured as follows: the upper surface of the manifold has an output controller mounting position and a controlled element mounting position;

[0012] The interior of the busbar is provided with an installation channel, and the two side walls of the installation channel are respectively provided with slide grooves along the extension direction of the installation channel. The control panel is arranged in the installation channel, and the two side edges of the control panel slide into the corresponding slide grooves; the two ends of the installation channel are covered by end plates, and a through opening is provided on the upper surface of the busbar corresponding to the installation channel.

[0013] With the above further configuration, this design enables the control panel to slide along the slide groove of the installation channel, which is convenient for installation and removal and improves the convenience of maintenance. The setting of the through-port facilitates the plug-in connection of the connector on the control panel in the installation channel. Through such a layout, the utility model not only ensures the close fit between the various components, but also improves the overall operational flexibility and maintenance efficiency.

[0014] Further setting of the present utility model: The through ports are multiple, including multiple output through ports corresponding to the sub-output connectors and an input through port corresponding to the main input connector;

[0015] A positioning component for positioning the output controller is provided on the bus bar. A clamping gap is provided on the positioning component, and the clamping gap cooperates with the convex edge at the bottom of the controller for clamping and positioning. The positioning component is hooked and cooperated with the side edge of the input through port through a hook and can slide along the extension direction of the bus bar.

[0016] With the above further setting, the correspondence between the multiple output through ports and the sub-output connectors, and the correspondence between the input through port and the main input connector make the plug-in connection clearer and more orderly, improving the accuracy and efficiency of the operation. At the same time, the setting of the positioning component enables the output controller to be accurately positioned on the bus bar. The cooperation between the clamping gap and the convex edge at the bottom of the controller for clamping, and the cooperation between the positioning component and the side edge of the input through port through the hook not only ensure the stable installation of the controller, but also enable it to slide along the extension direction of the bus bar, further improving the flexibility of installation and the convenience of maintenance.

[0017] Further setting of the present utility model: Multiple scales and pointers pointing to different scales are provided on the surface of the rotary encoder switch, and both the scales and the pointers are exposed outside the control box; A switch cover is provided on the control box, and the rotary encoder switch is shielded or exposed by the opening and closing action of the switch cover.

[0018] With the above further setting, the pointer will point to different scales to indicate the coding value, and the user can directly observe the scales on the switch to determine the current coding position;

[0019] The design of the switch cover, on the one hand, effectively protects the rotary encoder switch, avoids its damage, and prevents communication anomalies caused by inaccurate coding values; on the other hand, when the switch cover is opened, it is convenient for the user to understand the current coding.

[0020] Further setting of the present utility model: The switch cover is rotatably inserted on the control box. A hook is provided on the switch cover, and the lower end of the hook has a hook head that can hook the control box;

[0021] A bayonet is provided on the control box on the outer periphery of the surface of the rotary encoder switch. The bayonet is used to limit the entry and exit of the hook head, and one end of the bayonet has a door opening. The door opening can allow the hook head of the hook to enter and exit. The hook head of the hook inserted through the door opening is rotated circumferentially to the lower part of the bayonet to realize the positioning cooperation with the control box.

[0022] With the above further settings, the design of the rotatable and inserted switch cover is not only easy to install but also convenient for users to quickly open and close. When installing the switch cover, insert the hook head of the snap hook downward from the door opening and rotate the switch cover so that the hook head turns below the bayonet, and the bayonet restricts the hook head from sliding upward, realizing the installation operation of the switch cover. This structure makes the switch cover firmly installed and easily disassembled. Compared with the traditional snap or screw fixation methods, the operation is more time-saving and labor-saving.

[0023] Further settings of the present utility model: The control box is provided with a power-on status indicator light, a communication quality indicator light, a buzzer, a reset button, and a restore button that are electrically connected to the circuit board module.

[0024] The power-on status indicator light is used to indicate whether the electric control hub island is powered on, and the communication quality indicator light is used to display the network communication quality status of the electric control hub island.

[0025] The control box is provided with a buzzer, which is electrically connected to the circuit board module. The buzzer can cooperate with the indicator light in a linkage manner to feedback the operation status of the electric control hub island through a combination of sound and light.

[0026] The reset button is used for the restart operation of the electric control hub island; the restore button is used to restore the electric control hub island to the factory default state after a set time of long pressing.

[0027] With the above further settings, by adding a power-on status indicator light and a communication quality indicator light, users can intuitively understand the operation status of the electric control hub island. The lighting of the power-on status indicator light indicates that the device has been successfully powered on and entered the standby state. And different display states of the communication quality indicator light, for example, if there are three communication quality indicator lights, different lighting colors, or flashing frequencies, etc. characterize the quality of communication. Operators can directly and quickly judge whether the device is powered on and the network connection status through the indicator lights without additional detection tools, reducing the time for troubleshooting; it can feedback the communication quality in real time, facilitating the timely discovery of network anomalies such as weak signals and packet loss, and ensuring the reliability of data transmission.

[0028] When the electric control hub island is in an abnormal state, such as when the power is not connected, there is a communication failure, or other preset alarm conditions are triggered, the buzzer will emit an alarm sound at a specific frequency, and at the same time, cooperate with the display of the indicator light, such as flashing or changing to a specific color, to form a dual alarm signal of sound and light. This design of linkage cooperation not only enhances the intuitiveness of the alarm but also improves the visibility of the alarm, ensuring that operators can quickly notice the abnormal state of the device even in a noisy or poor visibility environment, and take timely measures to handle it, avoiding the expansion of faults or the occurrence of safety accidents.

[0029] The reset button can quickly solve temporary faults during the operation of the device, such as program lag, and reduce downtime; the restore button supports one-key restoration of the default configuration, facilitating device maintenance or debugging, avoiding complex manual parameter reset, and reducing the operation threshold and maintenance cost.

[0030] A further setting of the present utility model: screw passing channels are provided on both sides of the control box, and the side of the screw passing channel is of an open structure; mounting holes corresponding to the screw passing channels are provided on the busbar plate.

[0031] With the above further setting, compared with the closed structure, the open design simplifies the screw installation process. Without the need to completely align the hole positions, the screw can be inserted from the side opening, greatly improving the installation efficiency; and by driving the screw into the mounting hole, the control box is installed on the busbar plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural diagram of a specific embodiment of the present utility model;

[0033] Figure 2 It is a structural diagram of the busbar plate of a specific embodiment of the present utility model;

[0034] Figure 3 It is an exploded view of the busbar plate of a specific embodiment of the present utility model;

[0035] Figure 4 It is a structural diagram of the positioning component of a specific embodiment of the present utility model;

[0036] Figure 5 It is an internal structural diagram of the busbar plate of a specific embodiment of the present utility model;

[0037] Figure 6 It is a structural diagram of the output control box of a specific embodiment of the present utility model, where the switch cover is in the closed state;

[0038] Figure 7 It is a structural diagram of the output control box of a specific embodiment of the present utility model, where the switch cover is in the open state;

[0039] Figure 8 It is a structural diagram of one side of the bottom of the output control box in a specific embodiment of the present utility model;

[0040] Figure 9 It is an exploded view of the output control box of a specific embodiment of the present utility model;

[0041] Figure 10 It is a structural diagram of the switch cover and the bayonet of a specific embodiment of the present utility model;

[0042] Figure 11 It is a structural diagram of the first circuit board of a specific embodiment of the present utility model;

[0043] Figure 12 The structural diagram of the second circuit board for the specific embodiment of the present utility model;

[0044] Figure 13 The system module connection diagram for the specific embodiment of the present utility model;

[0045] Figure 14 The circuit connection diagram for the specific embodiment of the present utility model;

[0046] Figure 15 is Figure 14 The partial enlarged view of part A in

[0047] Figure 16 is Figure 14 The partial enlarged view of part B in

[0048] Figure 17 is Figure 14 The partial enlarged view of part C in

[0049] Figure 18 is Figure 14 The partial enlarged view of part D in

[0050] Figure 19 is Figure 14 The partial enlarged view of part E in

[0051] Figure 20 is Figure 14 The partial enlarged view of part F in

[0052] Figure 21 is Figure 14 The partial enlarged view of part G in

[0053] Figure 22 is Figure 14 The partial enlarged view of part H in

[0054] Figure 23 is Figure 14 The partial enlarged view of part I in Specific embodiments

[0055] Next, the technical solutions in this embodiment will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0056] Such as Figure 1-12As shown in the figure, an electric control hub island of the present utility model includes a busbar 1, a plurality of controlled components 2 installed on the busbar 1, and an output controller 3. The controlled components 2 are controllers such as solenoid valves, electromagnets or relays;

[0057] A centralized control board 11 is arranged inside the busbar 1. A total input connector 12 and a plurality of sub-output connectors 13 are provided on the centralized control board 11. The busbar 1 has through holes 14 corresponding to the total input connector and the sub-output connectors. A plurality of controlled components 2 are inserted and connected to the plurality of sub-output connectors 13 one by one to be powered on. The upper surface of the busbar 1 has an output controller installation position 15 and a controlled component installation position 16, and the installation positions have installation holes for screws to pass through. An installation channel 17 is provided inside the busbar 1. Slide grooves 171 extending along the extension direction of the installation channel 17 are respectively arranged on both side walls of the installation channel 17. The centralized control board 11 is arranged in the installation channel 17, and the two side edges of the centralized control board 11 slide into the corresponding slide grooves 171. Both ends of the installation channel 17 are covered by end plates 18, and through holes 14 corresponding to the installation channel 17 are provided on the upper surface of the busbar 1. There are a plurality of the through holes 14, including a plurality of output through holes 141 corresponding to the sub-output connectors 13 and an input through hole 142 corresponding to the total input connector 12; of course, it can also be a large through hole that is connected. A positioning component 19 for positioning the output controller 3 is arranged on the busbar 1. A clamping gap 191 is provided on the positioning component 19. The clamping gap 191 is engaged and positioned with the convex edge 318 at the bottom of the controller 3. The positioning component 19 is hooked and cooperated with the side edge 1421 of the input through hole through a hook 192 and can slide along the extension direction of the busbar 1. The side edge 1421 is arranged along the extension direction of the busbar 1.

[0058] The output controller 3 includes a control box 31 and a circuit board module 32 disposed within the control box 31. A power access component 33, a network cable socket 34, a total output connector 35, and a rotary encoder switch 36 are provided on the control box 31, and all are electrically connected to the circuit board module 32. The total output connector 35 is inserted into the total input connector 12 in a pluggable manner to achieve power-on. The encoder switch is also called a toggle switch. The rotary encoder switch 36 can generate multiple coding values. Among them, the circuit board module 32 establishes a communication connection with a specific controlled component among multiple controlled components 2 based on different coding values generated by the rotary encoder switch 36. Multiple scales 361 and a pointer 362 pointing to different scales are provided on the surface of the rotary encoder switch 36, and both the scales 361 and the pointer 362 are exposed outside the control box 31. The scales are usually set on the surface of the knob of the rotary encoder switch or on the fixed panel around it. When the scale is set on the surface of the knob, the user can directly observe the scale on the knob to determine the current coding position. When the scale is set on the surrounding fixed panel, there is generally a pointer or mark on the knob. As the knob rotates, the pointer or mark will point to different scales on the panel to indicate the coding value. A switch cover 37 is provided on the control box 31, and the rotary encoder switch 36 is shielded or exposed through the opening and closing action of the switch cover 37. The switch cover 37 is rotatably inserted into the control box 31. A hook 371 is provided on the switch cover 37, and the lower end of the hook 371 has a hook head 3711 that can hook the control box 31. A bayonet 38 is provided on the control box 31 on the outer periphery of the surface of the rotary encoder switch 36. The bayonet 38 is used to limit the entry and exit of the hook head 3711, and one end of the bayonet 38 has a doorway 39. The hook head 3711 of the hook 371 inserted through the doorway 39 rotates circumferentially to the lower part of the bayonet 38 to achieve positioning in cooperation with the control box 31. There are a pair of hooks. The switch cover can be slidably inserted or snap-connected to the control box 31.

[0059] Specifically, the following components electrically connected to the circuit board module 32 are provided on the control box 31: a power-on status indicator light 310, a communication quality indicator light 311, a buzzer, a reset button 313, and a restore button 314.

[0060] The power-on status indicator light 310 is used to indicate whether the electric control hub island is powered on, and the communication quality indicator light 311 is used to display the network communication quality status of the electric control hub island.

[0061] A buzzer is provided on the control box 31 and is electrically connected to the circuit board module 32. The buzzer can cooperate with the indicator light in a linkage manner to feedback the operating status of the electric control hub island through a combination of sound and light.

[0062] The reset button 313 is used for the restart operation of the electric control hub island; the restore button 314 is used to restore the electric control hub island to the factory default state after a set long press time.

[0063] On both sides of the control box 31, there are screw passing channels 315 respectively, and the side of the screw passing channel 315 is of an open structure; on the busbar 1, there are mounting holes 20 corresponding to the screw passing channels 315. The controlled components are also installed on the busbar by screws. The control box includes a detachable bottom case 316 and an upper cover 317. The circuit board module 32 includes a first circuit board 320 and a second circuit board 321 arranged in an up-and-down structure. Among them, a rotary encoder switch, an indicator light, a button, and a network cable socket are integrally arranged on the first circuit board. The upper cover is correspondingly partitioned into a coding area, an indicator light area, and a button area. The coding area corresponds to the rotary encoder switch, the indicator light area corresponds to the power-on status indicator light and the communication quality indicator light, and the button area corresponds to the reset button and the restore button. The network cable socket is externally disposed at one end of the bottom case; the second circuit board integrates an output connector and a power access component. The output connector protrudes from the lower bottom surface of the bottom case. The power access component is of a terminal structure or a socket structure. There is an inlet 322 corresponding to the terminal structure on one side of the control box.

[0064] As Figure 13 As shown, the output control system of the present utility model includes the above output controller. Among them, the circuit board module has a processor, an Ethernet communication module, a storage module, and an optocoupler drive output module. The processor is respectively connected to the Ethernet communication module, the storage module, the rotary encoder switch, the button module, the indicator light control module, the buzzer, and the optocoupler drive output module; the Ethernet communication module is communicatively connected to the PLC through the network cable socket; the optocoupler drive output module is connected to the controlled component through the output connector; the button module includes a reset button and a restore button; the indicator light control module includes a power-on status indicator light and a communication quality indicator light.

[0065] During installation, insert a network cable into the network cable socket of the output controller; connect the power supply line through the power access component in the form of a terminal to complete the power connection; and install the output controller on the busbar and connect it in a plug-and-play manner with the main input connector on the busbar through the main output connector; among them, multiple controlled components are installed on the busbar and are connected in a plug-and-play manner with multiple sub-output connectors 13 to achieve power-on.

[0066] When the output controller is powered on, the power-on status indicator light comes on, indicating that the controller is powered on. The PLC sends control instructions to the controller through the Ethernet communication module, and the communication quality indicator shows different states according to the network communication quality. If the communication is normal, the green light is on; if the communication is poor, the yellow light is on; if a communication interruption occurs, the red light is on. The rotary coding switch can generate multiple coding values, and each coding value corresponds to a specific controlled component or a group of controlled components. Moreover, the user can judge the current controlled component by seeing the indication scale of the rotary coding switch. For example, if the coding value of the rotary coding switch is set to "01", this coding value is used to identify that the controller communicates with a specific group of controlled components. It is determined by the processor which group of controlled components corresponding to the coding is to be controlled. When the Ethernet communication module transmits the received PLC instructions to the processor, the processor, based on the instruction content and the coding information of the rotary coding switch, sends control signals to the corresponding target controlled components through the optocoupler-driven output module, achieving precise control of the controlled components.

Claims

1. An electric control hub island, comprising a busbar (1), a plurality of controlled elements (2) mounted on the busbar (1), and an output controller (3), characterized in that: The manifold (1) is provided with a centralized control board (11), a main input connector (12) and a plurality of branch output connectors (13) are provided on the centralized control board (11), the manifold (1) has openings (14) corresponding to the main input connector and the branch output connectors, and the plurality of controlled elements (2) are plug-connected to the plurality of branch output connectors (13) one by one; The output controller (3) comprises a control box (31), a circuit board module (32) arranged in the control box (31); the control box (31) is provided with a power supply access component (33), a network cable socket (34), a total output connector (35) and a rotary coding switch (36), and all are electrically connected to the circuit board module (32); the total output connector (35) is plug-connected to the total input connector (12); the rotary coding switch (36) is capable of generating a plurality of coding values, wherein the circuit board module (32) establishes a communication connection with a specific controlled element among the plurality of controlled elements (2) based on the different coding values ​​generated by the rotary coding switch (36).

2. The electrically controlled hub island according to claim 1, characterized in that: The controlled element (2) is a solenoid valve, an electromagnet or a relay.

3. The electrically controlled hub island according to claim 1, characterized in that: The upper surface of the manifold (1) has an output controller mounting position (15) and a controlled element mounting position (16); The collector plate (1) has an installation channel (17) inside, and two side walls of the installation channel (17) are respectively provided with slide grooves (171) along the extension direction of the installation channel (17), and the control panel (11) is arranged in the installation channel (17), and the two side edges of the control panel (11) slide into the corresponding slide grooves (171); Both ends of the installation channel (17) are covered by end plates (18), and a through opening (14) is provided on the upper surface of the collector plate (1) corresponding to the installation channel (17).

4. The electrically controlled hub island according to claim 1, 2 or 3, characterized in that: The ports (14) have a plurality of ports, including a plurality of output ports (141) corresponding to the branch output connectors (13), and an input port (142) corresponding to the main input connector (12); The busbar (1) is provided with a positioning component (19) for positioning the output controller (3); the positioning component (19) is provided with a snap-fitting slit (191); the snap-fitting slit (191) is engaged with a convex edge (318) at the bottom of the controller (3) for snap-fitting positioning; the positioning component (19) is engaged with a side edge (1421) of the input port through a snap hook (192) and can slide along the extension direction of the busbar (1).

5. The electrically controlled hub island according to claim 1, 2 or 3, characterized in that: A plurality of scales (361) and pointers (362) pointing to different scales are arranged on the surface of the rotary coding switch (36), and both the scales (361) and the pointers (362) are exposed from the control box (31); a switch cover (37) is arranged on the control box (31), and the rotary coding switch (36) is shielded or exposed by opening and closing the switch cover (37).

6. The electrically controlled hub island according to claim 5, characterized in that: The switch cover (37) is rotatably inserted on the control box (31), and a hook (371) is provided on the switch cover (37). The lower end of the hook (371) has a hook head (3711) that can hook the control box (31); The control box (31) is provided with a bayonet (38) on the outer periphery of the surface of the rotary coding switch (36), the bayonet (38) being used to restrict the entry and exit of the hook head (3711), and one end of the bayonet (38) is provided with a door hole (39), the door hole (39) being capable of allowing the hook head (3711) of the hook (371) to enter and exit, and the hook head (3711) of the hook (371) inserted through the door hole (39) is rotated circumferentially to the bottom of the bayonet (38), thereby realizing the coordinated positioning with the control box (31).

7. The electrically controlled hub island according to claim 1, 2 or 3, characterized in that: The control box (31) is provided with: a power-on status indicator light (310), a communication quality indicator light (311), a buzzer, a reset button (313) and a restore button (314), which are electrically connected to the circuit board module (32). The power-on status indicator light (310) is used to indicate whether the electric control hub island is powered on, and the communication quality indicator light (311) is used to display the network communication quality status of the electric control hub island; The control box (31) is provided with a buzzer which is electrically connected to the circuit board module (32); the buzzer can cooperate with the indicator light to provide feedback on the operating status of the electric control hub island through a combination of sound and light; The reset button (313) is used for restarting the electric control hub island; the restore button (314) is used for restoring the electric control hub island to the factory default state after being pressed for a set time.

8. The electrically controlled hub island according to claim 1, 2 or 3, characterized in that: The control box (31) is provided with screw insertion channels (315) on both sides, and the sides of the screw insertion channels (315) are open structures; the busbar (1) is provided with mounting holes (20) corresponding to the screw insertion channels (315).

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