Distribution box for power distribution cabinet and power distribution cabinet

Abstract

The embodiment of the utility model provides a distribution box for a power distribution cabinet and the power distribution cabinet. The junction box comprises a box body, a circuit board, a second connecting assembly and a plurality of first connecting assemblies. The box body comprises a first opening, a second opening and a containing cavity. The circuit board is arranged in the accommodating cavity and is coupled to the box body. A plurality of first connection assemblies are arranged at the first opening, and the plurality of first connection assemblies are coupled to the circuit board. A second connection assembly is arranged at the second opening, and the second connection assembly is coupled to the circuit board. The second connecting assembly can be electrically connected with the multiple first connecting assemblies through the circuit board, and the second connecting assembly can also be electrically connected with external equipment. In this way, the circuit board replaces dense and complex secondary wires in the junction box, the space occupied by the secondary wires in the junction box can be reduced, the assembly difficulty of the wire harnesses can be reduced, and the situation that the number of the first connecting assemblies and the number of the drawer assemblies in the same layer are limited due to the fact that the secondary wire harnesses are too crowded is avoided.

Description

Technical Field

[0001] The embodiments of the present disclosure generally relate to the field of electrical equipment, and more particularly to a junction box for a power distribution cabinet and a power distribution cabinet. Background Art

[0002] Drawer-type distribution cabinets are particularly common. By setting up two or more removable drawer assemblies on the same floor, the modularization and standardization of the distribution unit can be achieved. The drawer assembly usually contains electrical components such as circuit breakers, contactors, relays, electric energy meters, fuses, and transformers. Each drawer is an independent functional unit that can be easily installed, replaced or repaired without affecting the normal operation of other drawers. In conventional drawer-type distribution cabinets, as the number of drawer assemblies set on the same floor increases, the number of control circuit wiring often far exceeds the main circuit wiring due to the large number of signal acquisition, control instruction transmission and protection circuits involved, forming a dense and complex wiring harness, which seriously squeezes the space in the junction box, and the wiring harness is difficult to assemble, which also limits the expansion of the number of drawer assemblies. Utility Model Content

[0003] An object of the embodiments of the present disclosure is to provide a junction box for a power distribution cabinet and a power distribution cabinet to at least partially solve the above-mentioned problems and other potential problems.

[0004] In the first aspect of the present disclosure, a junction box for a power distribution cabinet is provided. The junction box comprises: a box body, comprising: a first opening, arranged on a side of the box body adjacent to a plurality of drawer assemblies; a second opening, arranged on a side of the box body away from the plurality of drawer assemblies; and a receiving cavity; and a circuit board, arranged in the receiving cavity and coupled to the box body; a plurality of first connection components, arranged at the first opening, the plurality of first connection components are coupled to the circuit board, and are suitable for being electrically connected to the corresponding electrical devices in the drawer assembly; and a second connection component, arranged at the second opening, the second connection component is coupled to the circuit board, and is suitable for being electrically connected to the plurality of first connection components via the circuit board, and the second connection component can be electrically connected to an external device.

[0005] In some embodiments, each of the first connection components includes a first digital output interface and a first digital input interface, and the second connection component includes: a second digital output interface, suitable for being electrically connected to the first digital input interface via the circuit board; and a second digital input interface, suitable for being electrically connected to the first digital output interface via the circuit board.

[0006] In some embodiments, the junction box further includes: a plurality of modular sockets arranged at the first opening and coupled to the box body, and suitable for integrating the first digital output interfaces and the first digital input interfaces of the plurality of first connection components in a one-to-one correspondence.

[0007] In some embodiments, the first digital output interface, the first digital input interface, the second digital output interface, and the second digital input interface are all multi-pin connectors.

[0008] In some embodiments, the circuit board includes a network bus, and the network bus includes a first end and a second end; each of the modular sockets also includes a first network interface, and the junction box also includes: a plurality of second network interfaces, which are arranged on the side of the circuit board facing the second opening and are electrically connected to the network bus, and the plurality of second network interfaces can be electrically connected to the plurality of first network interfaces one by one; a network input line interface, which is arranged at the second opening and is electrically connected to the first end of the network bus; and a network output line interface, which is arranged at the second opening and is electrically connected to the second end of the network bus.

[0009] In some embodiments, the plurality of second network interfaces are connected in parallel to the network bus.

[0010] In some embodiments, the junction box also includes: a plurality of first connecting elements, coupled to the circuit board and suitable for being electrically connected to the plurality of first digital output interfaces in a one-to-one correspondence; and a plurality of second connecting elements, coupled to the circuit board and suitable for being electrically connected to the plurality of first digital input interfaces in a one-to-one correspondence.

[0011] In some embodiments, each of the modular sockets includes: a body; and a connecting portion arranged at an edge of the body and detachably connected to an edge of the box corresponding to the first opening.

[0012] In some embodiments, each of the modular sockets further includes: a guide portion, including a fixed end and a free end, the fixed end being coupled to the connecting portion, and the free end being farther away from the connecting portion than the fixed end, so as to be suitable for guiding the communication interface of the corresponding drawer assembly to dock with the modular socket.

[0013] In some embodiments, the free end of the guide portion is a pointed end.

[0014] In some embodiments, the box body also includes: a third opening, arranged on a side of the box body adjacent to the multiple drawer assemblies; a fourth opening, arranged on a side of the box body away from the multiple drawer assemblies, suitable for placing the lead-out primary outgoing lines; and a fifth opening, arranged on a side of the box body away from the multiple drawer assemblies; and the junction box also includes: a plurality of primary incoming busbars arranged in parallel, arranged at the third opening and coupled to the accommodating cavity of the box body; a plurality of primary outgoing line interfaces, arranged at the first opening and coupled to the box body; and a plurality of busbar clamps, arranged at the fifth opening and electrically connected one-to-one to the plurality of primary incoming busbars, suitable for enabling the power supply busbar to supply power to the plurality of primary incoming busbars.

[0015] In some embodiments, the multiple primary line outlet interfaces are integrated on the multiple modular sockets in a one-to-one correspondence.

[0016] In some embodiments, a through hole is provided on the circuit board, and the junction box further includes: a plurality of conductive connectors, which are inserted into the through holes and electrically connected one by one to the plurality of primary incoming busbars and the plurality of busbar clamps.

[0017] In some embodiments, the junction box further includes: a pair of insulating support members, arranged in parallel at both ends of the plurality of primary incoming busbars to support the plurality of primary incoming busbars.

[0018] In a second aspect of the present disclosure, a power distribution cabinet is provided. The power distribution cabinet comprises: a cabinet body; a junction box according to the first aspect of the present disclosure, the junction box being coupled to the cabinet body; and a plurality of drawer assemblies arranged on a side adjacent to the junction box where a first opening is opened, and any one of the plurality of drawer assemblies can be pulled out and connected to the cabinet body.

[0019] In an embodiment of the present disclosure, a junction box includes a box body, a circuit board, a plurality of first connection components and a second connection component. The box body includes a first opening, a second opening and a receiving cavity. The first opening is arranged on a side of the box body adjacent to the plurality of drawer components, and the second opening is arranged on a side of the box body away from the plurality of drawer components. The circuit board is arranged in the receiving cavity and coupled to the box body. A plurality of first connection components are arranged at the first opening, and the plurality of first connection components are coupled to the circuit board. A second connection component is arranged at the second opening, and the second connection component is coupled to the circuit board. The second connection component can be electrically connected to the plurality of first connection components via the circuit board, and the second connection component can also be electrically connected to an external device. With this arrangement, the circuit board can replace the dense and complex secondary wire harness in the junction box, and the second connection component replaces the reserved harness connector for connecting to the external device, which can reduce the space occupied by the secondary wire in the junction box, and can reduce the difficulty of assembling the harness. At the same time, the junction box will not limit the number of first connection components and the number of drawer components on the same layer because the secondary wires are too crowded.

[0020] It should be understood that the content described in this content section is not intended to limit the key features or important features of the embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and other features, advantages and aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. In the accompanying drawings, the same or similar reference numerals represent the same or similar elements, wherein:

[0022] Figure 1 A perspective view of a junction box for a power distribution cabinet according to an embodiment of the present disclosure is shown, wherein a first opening is shown;

[0023] Figure 2 A perspective view of a junction box for a power distribution cabinet according to an embodiment of the present disclosure is shown, wherein a second opening is shown;

[0024] Figure 3 A perspective view of a box body according to an embodiment of the present disclosure is shown, wherein a first opening is shown;

[0025] Figure 4 A perspective view of a box body according to an embodiment of the present disclosure is shown, wherein a second opening is shown;

[0026] Figure 5 A three-dimensional diagram of a modular socket, a circuit board, and a primary incoming busbar according to an embodiment of the present disclosure is shown, wherein the modular socket is shown at the front side;

[0027] Figure 6A three-dimensional diagram showing a modular socket, a circuit board, and a primary incoming busbar according to an embodiment of the present disclosure, wherein the circuit board is shown at the front side; and

[0028] Figure 7 A perspective view of a modular jack according to an embodiment of the present disclosure is shown.

[0029] Description of reference numerals:

[0030] 100, junction box;

[0031] 10. Box body; 11. First opening; 12. Second opening; 13. Third opening; 14. Fourth opening; 15. Fifth opening; 16. Accommodating chamber;

[0032] 20. Circuit board; 21. Through hole;

[0033] 30. First connection component; 31. First digital output interface; 32. First digital input interface;

[0034] 40. Second connection component; 41. Second digital output interface; 42. Second digital input interface;

[0035] 50. Modular socket; 51. Main body; 52. Connecting part; 53. Guide part;

[0036] 61. First network interface; 62. Second network interface; 63. Network input line interface; 64. Network output line interface;

[0037] 71. a first connecting element; 72. a second connecting element;

[0038] 81. Primary incoming busbar; 82. Primary outgoing line interface; 83. Busbar clamp; 84. Conductive connector; 85. Insulating support. DETAILED DESCRIPTION

[0039] The preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present disclosure more thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art.

[0040] As used herein, the term "including" and its variations mean open inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "based at least in part on". The terms "an example embodiment" and "an embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc. may refer to different or the same objects.

[0041] As mentioned above, in a conventional drawer-type power distribution cabinet, as the number of drawer components arranged on the same layer increases, the control circuit wiring involves a large number of signal acquisition, control instruction transmission and protection circuits, the number of which often far exceeds the main circuit wiring, forming a dense and complex wiring harness, which seriously squeezes the space in the junction box, and the wiring harness is difficult to assemble, which also limits the expansion of the number of drawer components.

[0042] The embodiments of the present disclosure provide a junction box 100 for a power distribution cabinet and a power distribution cabinet. In the junction box 100, a circuit board 20, a second connection component 40 and a plurality of first connection components 30 are provided. With this arrangement, the circuit board 20 can replace the dense and complex secondary wiring harness in the junction box 100, and the second connection component 40 replaces the reserved harness connector of the secondary line for connecting to external devices, which can reduce the space occupied by the secondary wiring harness in the junction box 100 and reduce the difficulty of assembling the harness. At the same time, the junction box 100 will not limit the number of first connection components 30 and the number of drawer components due to the overcrowding of the secondary wiring harness, that is, the number of drawer components provided on the same layer of the power distribution cabinet can be expanded as needed. The following will be combined with Figures 1 to 7 To describe the principles of the present disclosure in detail.

[0043] like Figures 1 to 4 As shown, the junction box 100 includes a box body 10, a circuit board 20, a second connection component 40 and a plurality of first connection components 30. The box body 10 is the main structure of the junction box 100, and has a specific layout and openings for integrating and protecting the internal electronic components, and for cooperating the internal electronic components with other devices. The box body 10 includes a first opening 11, a second opening 12 and a accommodating cavity 16. The first opening 11 is located on a side of the box body 10 close to a plurality of drawer assemblies, and the drawer assembly is a pluggable module, which is convenient for users to access or replace the internal electrical equipment. The second opening 12 is opposite to the first opening 11, and is located on a side of the box body 10 away from the plurality of drawer assemblies. The accommodating cavity 16 is used to place electronic components (such as the circuit board 20 described below, etc.).

[0044] See also Figures 5 and 6The circuit board 20 is located in the accommodating cavity 16. It is the core component of the junction box 100 and can carry various electronic components (such as chips, resistors, capacitors, interfaces, etc.) and is responsible for signal transmission, processing or distribution. The circuit board 20 can be fixed to the box body 10 by physical connection (such as welding, slots, etc.).

[0045] like Figure 1 As shown, a plurality of first connection components 30 are arranged at the first opening 11, and the plurality of first connection components 30 are coupled to the circuit board 20, and the plurality of first connection components 30 can be electrically connected to the electrical devices in the corresponding drawer components. A second connection component 40 is arranged at the second opening 12, and the second connection component 40 is coupled to the circuit board 20, and the second connection component 40 is suitable for being electrically connected to the plurality of first connection components 30 via the circuit board 20, and the second connection component 40 can be electrically connected to an external device. The first connection component 30 and the second connection component 40 may include an optical fiber interface, an RJ45 network interface, or other types of connectors, so that the junction box 100 can access a wider range of networks or signal sources.

[0046] With this arrangement, the circuit board 20 can replace the dense and complex secondary wire harness in the junction box 100, and the second connection component 40 replaces the reserved harness connector of the secondary wire for connecting to external devices, which can reduce the space occupied by the secondary wire harness in the junction box 100 and reduce the difficulty of assembling the harness. At the same time, the number of the first connection components 30 and the number of drawer components will not be limited due to the overcrowding of the secondary wire harness, that is, the number of drawer components set on the same layer of the power distribution cabinet can be expanded as needed.

[0047] For example, a conventional junction box can at most satisfy the secondary wiring arrangement of four drawer assemblies in the same layer, while the junction box 100 provided in the embodiment of the present disclosure can satisfy the wiring arrangement of more than four drawer assemblies. Figures 1 to 6 As shown, the junction box 100 can satisfy the wiring harness arrangement of eight drawer assemblies.

[0048] In some embodiments, the number of the second connection component 40 is one, that is, the second connection component 40 can be integrated on a communication connector to facilitate quick connection with an external device.

[0049] In some alternative embodiments, there may be a plurality of second connection components 40. The plurality of second connection components 40 are connected to the plurality of first connection components 30 in a one-to-one correspondence via the circuit board 20. In this way, classified transmission of signals can be achieved.

[0050] In some embodiments, Figure 7 As shown, each first connection component 30 includes a first digital output interface 31 and a first digital input interface 32. Figure 2 As shown, the second connection component 40 includes a second digital output interface 41 and a second digital input interface 42. The second digital output interface 41 is electrically connected to the first digital input interface 32 via the circuit board 20, and the second digital input interface 42 is electrically connected to the first digital output interface 31 via the circuit board 20. In this way, the first digital output interface 31, the first digital input interface 32, the circuit board 20, the second digital output interface 41, and the second digital input interface 42 jointly establish a communication loop between an external device and the electrical devices in the plurality of drawer components.

[0051] That is to say, the signal sent by the external device can be sent to the electrical device in the corresponding drawer assembly in sequence along the second digital input interface 42, the circuit board 20, and the first digital output interface 31. The signal is processed or fed back by the electrical device, and then sent to the external device via the first digital input interface 32, the circuit board 20, and the second digital output interface 41, so that the signal can be completely closed-loop between the external device and the electrical device in the drawer assembly.

[0052] In some embodiments, Figure 1 As shown, the junction box 100 further includes a plurality of modular sockets 50. The plurality of modular sockets 50 are installed at the first opening 11 and coupled to the box body 10, and the plurality of modular sockets 50 are integrated with the first digital output interfaces 31 and the first digital input interfaces 32 of the plurality of first connection components 30 in a one-to-one correspondence.

[0053] like Figure 1 As shown, multiple modular sockets 50 are further added based on the original junction box 100 structure. The modular sockets 50 can add, replace or reconfigure different functional modules as needed to adapt to different application scenarios or technical changes. For example, if a new type of interface is set due to system update, the new type of interface can be directly installed on the modular socket 50.

[0054] like Figure 1 As shown, the modular socket 50 corresponds to the position of the first opening 11 mentioned above. In this way, the connection from the drawer assembly to the modular socket is more direct and convenient, and it is also convenient for the operator to perform plugging and unplugging operations. The modular socket 50 is tightly connected to the box body 10, ensuring the structural stability and durability of the junction box 100. The modular socket 50 and the box body 10 can be connected by snaps, screws or other reliable methods to prevent the modular socket 50 from loosening or falling off during use.

[0055] like Figure 7As shown, a plurality of first connection components 30 and a plurality of modular sockets 50 correspond one to one, that is, the first digital output interface 31 and the first digital input interface 32 of each first connection component 30 are integrated on one modular socket 50. In this way, the electrical equipment in each drawer component can be connected to the junction box 100 through the corresponding first digital input interface 32 and the first digital output interface 31. These digital interfaces generally support high-speed data transmission and are suitable for the communication requirements of modern electronic equipment.

[0056] In some embodiments, Figure 1 and Figure 7 As shown, the first digital output interface 31, the first digital input interface 32, the second digital output interface 41 and the second digital input interface 42 are all multi-pin connectors. With this arrangement, firstly, multiple signals or power lines can be transmitted simultaneously, thereby improving the overall efficiency of the system. Secondly, the multi-pin connector has good wear resistance and conductivity, which ensures stable contact during long-term use and reduces the risk of signal attenuation or interruption. Furthermore, the industrial-grade multi-pin connector has a high waterproof rating (such as IP65, IP67 or even IP68), which can maintain good sealing performance in harsh environments, prevent moisture and dust from intruding, and extend the service life.

[0057] In some alternative embodiments, the first digital output interface 31, the first digital input interface 32, the second digital output interface 41 and the second digital input interface 42 may be optical fiber interfaces, Thunderbolt interfaces, DisplayPort interfaces, USB Type-C interfaces, etc.

[0058] In some embodiments, the circuit board 20 includes a network bus. The network bus includes a first end and a second end. The length and arrangement position of the network bus in the circuit board 20 can be set as needed.

[0059] like Figure 7 As shown, each modular socket 50 also includes a first network interface 61, which is used to electrically connect to the electrical equipment in the drawer assembly. The junction box 100 also includes a network input interface 63, a network output interface 64, and a plurality of second network interfaces 62. The plurality of second network interfaces 62 are arranged on the side of the circuit board 20 facing the second opening 12, and the plurality of second network interfaces 62 are electrically connected to the network bus. The plurality of second network interfaces 62 can be electrically connected to the plurality of first network interfaces 61 in a one-to-one correspondence. A network input interface 63 and a network output interface 64 are arranged at the second opening 12, the network input interface 63 is electrically connected to the first end of the network bus, and the network output interface 64 is electrically connected to the second end of the network bus.

[0060] In this way, external devices can be electrically connected to the electrical equipment in each drawer assembly. Through network signal transmission, the working status and operation data of each component in the distribution cabinet, such as voltage, current, power factor, power consumption and other information, can be collected in real time. First, managers can remotely monitor the operating status of the distribution system, discover and handle faults in a timely manner, and improve the efficiency and response speed of power grid management. Secondly, the integrated intelligent system can analyze the collected data, automatically diagnose potential electrical problems such as overload, short circuit, leakage, etc., and issue early warnings to effectively prevent accidents and ensure the safety and stability of power supply. Furthermore, maintenance personnel can remotely control the switchgear in the distribution cabinet through the network, set parameters or operate controls without on-site operation, reducing labor costs and maintenance difficulties, especially in remote or difficult-to-reach locations.

[0061] In some embodiments, Figure 6 As shown, multiple second network interfaces 62 are connected in parallel to the network bus. With this arrangement, the bus length can be reduced, the communication quality can be improved, and a single network interface can be connected to the drawer assembly, which can reduce one network interface and bypass switch, thereby reducing material costs.

[0062] In some embodiments, Figure 6 and Figure 7 As shown, the first network interface 61 and the second network interface 62 can be RJ45 interfaces. In this way, it has high compatibility and versatility, and can allow a certain degree of cable failure, which helps to maintain a relatively stable network connection and reduce network interruptions caused by physical connection problems.

[0063] In some embodiments, Figure 6 As shown, the junction box 100 also includes a plurality of first connection elements 71 and a plurality of second connection elements 72. The first connection element 71 is connected to the circuit board 20, and can be a pin, a connector, a socket, etc. The second connection element 72 is similar to the first connection element 71, and is also a connection point on the circuit board 20, which can be used to establish an electrical connection. The plurality of first connection elements 71 are electrically connected to the plurality of first digital output interfaces 31 in a one-to-one correspondence, and the plurality of second connection elements 72 are electrically connected to the plurality of first digital input interfaces 32 in a one-to-one correspondence. With this arrangement, the circuit board 20 can be electrically connected to the plurality of first digital output interfaces 31, and the circuit board 20 can be electrically connected to the plurality of first digital input interfaces 32 by using the first connection elements 71 and the second connection elements 72 on the circuit board 20. The first connection element 71 and the second connection element 72 realize the precise correspondence and transmission of the external signal to the internal circuit of the drawer assembly and the internal circuit of the drawer assembly to the external device, so that the signal can be transmitted in an orderly and clear manner between different devices, and is suitable for application scenarios where multiple digital signal inputs and outputs need to be processed simultaneously.

[0064] In some embodiments, Figure 7 As shown, each modular socket 50 includes a body 51 and a connecting portion 52. The body 51 is used to integrate the first connecting component 30 and the first network interface 61, etc. The connecting portion 52 is arranged at the edge of the body 51, and the connecting portion 52 is detachably connected to the edge of the box body 10 corresponding to the first opening 11.

[0065] like Figure 7 As shown, connecting parts 52 are respectively provided at the upper and lower edges of the main body 51. Screw holes are provided on the connecting part 52, and the connecting part 52 on the upper side of the main body 51 can be installed above the first opening 11 by bolts, and the connecting part 52 on the lower side of the main body 51 can be installed below the first opening 11. In this way, the main body 51 corresponds to the position of the first opening 11. The front side of the first connecting component 30 and the first network interface 61 faces the drawer assembly and can be connected to the communication interface of the drawer assembly. The rear side of the first connecting component 30 and the first network interface 61 faces the circuit board 20 in the box body 10 and can be electrically connected to the circuit board 20.

[0066] In some embodiments, Figure 7 As shown, each modular socket 50 further includes a guide portion 53. The guide portion 53 includes a fixed end and a free end. The fixed end of the guide portion 53 is mounted on the connecting portion 52, and the free end of the guide portion 53 is further away from the connecting portion 52 than the fixed end, so as to guide the communication interface of the corresponding drawer assembly to dock with the modular socket 50.

[0067] like Figure 7 As shown, the guide portion 53 may be a guide rod. One end of the guide rod is fixed to the connecting portion 52, and the other end is arranged toward the drawer assembly. When the operator pushes the drawer assembly into the power distribution cabinet, the guide rod may be inserted into the guide hole on the corresponding drawer assembly. Through the cooperation of the guide rod and the guide hole, the communication interface on the drawer assembly can be accurately docked with the modular socket 50 to stably transmit signals.

[0068] In some alternative embodiments, the guide portion 53 may be a guide rail or a guide groove. When the drawer assembly is pushed into the power distribution cabinet, the guide rail or the guide groove may guide the communication interface of the drawer assembly to dock with the modular socket 50.

[0069] In some embodiments, Figure 7 As shown, the free end of the guide portion 53 is a pointed end. With this arrangement, the free end can be more accurately inserted or docked into the corresponding hole or groove of the drawer assembly, which helps to accurately position. Secondly, the pointed end design can reduce the friction during insertion, making the assembly process smoother.

[0070] In some embodiments, Figure 3 and Figure 4 As shown, a third opening 13 is provided on a side of the box body 10 adjacent to the multiple drawer assemblies. A fourth opening 14 and a fifth opening 15 are provided on a side of the box body 10 away from the multiple drawer assemblies, and the fourth opening 14 is used to place the primary outgoing line.

[0071] like Figure 5 and Figure 6 As shown, the junction box 100 also includes a plurality of primary incoming busbars 81, a plurality of primary outgoing interfaces 82, and a plurality of busbar clamps 83. The plurality of primary incoming busbars 81 are arranged in parallel and arranged at the third opening 13, and the plurality of primary incoming busbars 81 are installed in the accommodating cavity 16 of the box body 10. A plurality of primary outgoing interfaces 82 are arranged at the first opening 11, and the plurality of primary outgoing interfaces 82 are coupled to the box body 10. A plurality of busbar clamps 83 are arranged at the fifth opening 15, and the plurality of busbar clamps 83 are electrically connected to the plurality of primary incoming busbars 81 one by one, so as to be suitable for the power supply busbar to supply power to the plurality of primary incoming busbars 81.

[0072] like Figure 5 and Figure 6 As shown, a circuit element for primary line wiring is also provided in the junction box 100, which can ensure that power can be efficiently and safely transmitted from the main power supply (also called power supply busbar) to different drawer components. Multiple primary incoming busbars 81 are main power supply channels connected to the junction box 100, and multiple primary incoming busbars 81 are arranged in parallel to facilitate management and increase the capacity of the circuit. Multiple primary incoming busbars 81 are arranged at the third opening 13 of the junction box 100.

[0073] The busbar clamp 83 is an electrical connector that ensures good electrical contact by fastening or other means to avoid loss or safety hazards during power transmission. A plurality of busbar clamps 83 are arranged at the fifth opening 15, and the plurality of busbar clamps 83 can realize the safe and reliable power supply from the power supply busbar (i.e., the conductive bar on the main power supply side) to each primary incoming busbar 81.

[0074] With this arrangement, when the drawer assembly abuts against the junction box 100, the primary line inlet connector on each drawer assembly can be electrically connected to the corresponding primary line inlet busbar 81. The primary line outlet connector on each drawer assembly can be electrically connected to the corresponding primary line outlet interface 82 at the first opening 11, thereby forming a primary line loop, which can provide load power for the electrical equipment in the drawer assembly. At the same time, the rear side of the primary line outlet interface 82 is connected to the lead-out primary line, and these primary lines are led out of the junction box 100 through the fourth opening 14.

[0075] In some embodiments, Figure 7As shown, a plurality of primary outlet interfaces 82 are integrated one by one on a plurality of modular sockets 50. With this arrangement, when the drawer assembly abuts against the junction box 100, the communication interface of the drawer assembly docks with the first connection assembly 30, the primary line inlet connector of the drawer assembly docks with the primary inlet busbar 81, and the primary line outlet connector of the drawer assembly can dock with the primary outlet interface 82. The operator only needs to perform a simple pull-out or push-out operation on the drawer assembly to disconnect and connect the primary line loop and the secondary line loop, which is convenient to use.

[0076] In some embodiments, Figure 6 As shown, a through hole 21 is provided on the circuit board 20. The junction box 100 further includes a plurality of conductive connectors 84. The plurality of conductive connectors 84 are inserted into the through holes 21 and are electrically connected to the plurality of primary incoming busbars 81 and the plurality of busbar clamps 83 in a one-to-one correspondence.

[0077] like Figure 6 As shown, multiple primary incoming busbars 81 are located on the side of the circuit board 20 facing the drawer assembly, and multiple busbar clamps 83 are located on the side of the circuit board 20 away from the drawer assembly. A through hole 21 is opened on the circuit board 20, and multiple busbar clamps 83 can be connected to multiple primary incoming busbars 81 through multiple conductive connectors 84 located in the through hole 21, which can reduce the length of the conductive connector 84, simplify the circuit layout, and help save material costs.

[0078] In some embodiments, Figure 6 As shown, the junction box 100 also includes two insulating supports 85. The two insulating supports 85 are arranged in parallel at both ends of the multiple primary incoming busbars 81, and can support the multiple primary incoming busbars 81. With this arrangement, the insulating supports 85 can provide physical support and electrical isolation, so that the multiple primary incoming busbars 81 can maintain the necessary electrical spacing with the box body 10 or other live parts to prevent short circuits or electric shock accidents. At the same time, the support can also bear the weight of the busbar to prevent positional displacement or deformation due to gravity.

[0079] In the second aspect of the present disclosure, a power distribution cabinet is provided. The power distribution cabinet includes a cabinet, a plurality of drawer assemblies, and a junction box 100 of the first aspect of the present disclosure. The cabinet has a storage space, and one side of the cabinet has an opening. The junction box 100 is installed in the cabinet. A plurality of drawer assemblies are arranged on a side adjacent to the junction box 100 where a first opening 11 is opened, and any of the plurality of drawer assemblies can be connected to the cabinet by pulling, that is, pulled out or pushed into the storage space of the cabinet along the opening. With this arrangement, the circuit board 20 of the junction box 100 can replace the dense and complex secondary wire harness in the junction box 100, and the second connection assembly 40 replaces the reserved wire harness connector of the secondary wire for connecting to an external device, which can reduce the space occupied by the secondary wire in the junction box 100 and reduce the difficulty of assembling the wire harness. At the same time, the number of the first connection assembly 30 and the number of the drawer assemblies will not be limited due to the overcrowding of the secondary wire harness, that is, the number of the drawer assemblies arranged on the same layer of the power distribution cabinet can be expanded as needed.

[0080] When the drawer assembly is against the junction box 100, the communication interface of the drawer assembly is docked with the first connection assembly 30, the primary line inlet connector of the drawer assembly is docked with the primary line inlet busbar 81, and the primary line outlet connector of the drawer assembly can be docked with the primary line outlet interface 82. The operator only needs to perform a simple pulling or pushing operation on the drawer assembly to disconnect and connect the primary line loop and the secondary line loop, which is convenient to use.

[0081] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A junction box (100) for a power distribution cabinet, characterized in that: include: The box body (10) comprises: A first opening (11) is arranged on a side of the box body (10) adjacent to the plurality of drawer assemblies; A second opening (12) is arranged on a side of the box body (10) facing away from the plurality of drawer assemblies; and a receiving chamber (16); and A circuit board (20) is arranged in the accommodating cavity (16) and coupled to the box body (10); A plurality of first connection components (30) are arranged at the first opening (11), the plurality of first connection components (30) are coupled to the circuit board (20), and are suitable for being electrically connected to the corresponding electrical devices in the drawer assembly; and A second connection component (40) is arranged at the second opening (12), the second connection component (40) is coupled to the circuit board (20), and is suitable for being electrically connected to the plurality of first connection components (30) via the circuit board (20), and the second connection component (40) can be electrically connected to an external device.

2. The junction box (100) according to claim 1, characterized in that: Each of the first connection components (30) comprises a first digital output interface (31) and a first digital input interface (32), and the second connection component (40) comprises: a second digital output interface (41), adapted to be electrically connected to the first digital input interface (32) via the circuit board (20); and The second digital input interface (42) is adapted to be electrically connected to the first digital output interface (31) via the circuit board (20).

3. The junction box (100) according to claim 2, characterized in that: Also includes: A plurality of modular sockets (50) are arranged at the first opening (11), coupled to the box body (10), and are suitable for integrating the first digital output interfaces (31) and the first digital input interfaces (32) of the plurality of first connection components (30) in a one-to-one correspondence.

4. The junction box (100) according to claim 2, characterized in that: The first digital output interface (31), the first digital input interface (32), the second digital output interface (41) and the second digital input interface (42) are all multi-pin connectors.

5. The junction box (100) according to claim 3, characterized in that: The circuit board (20) includes a network bus, and the network bus includes a first end and a second end; each of the modular sockets (50) also includes a first network interface (61), and the junction box (100) also includes: A plurality of second network interfaces (62) are arranged on a side of the circuit board (20) facing the second opening (12) and are electrically connected to the network bus, and the plurality of second network interfaces (62) can be electrically connected to the plurality of first network interfaces (61) in a one-to-one correspondence; A network incoming line interface (63), arranged at the second opening (12) and electrically connected to the first end of the network bus; and A network line outlet interface (64) is arranged at the second opening (12) and is electrically connected to the second end of the network bus.

6. The junction box (100) according to claim 5, characterized in that: The plurality of second network interfaces (62) are connected in parallel to the network bus.

7. The junction box (100) according to any one of claims 2 to 6, characterized in that: Also includes: A plurality of first connecting elements (71), coupled to the circuit board (20), and adapted to be electrically connected to the plurality of first digital output interfaces (31) in a one-to-one correspondence; as well as A plurality of second connection elements (72) are coupled to the circuit board (20) and are suitable for being electrically connected to a plurality of the first digital input interfaces (32) in a one-to-one correspondence.

8. The junction box (100) according to any one of claims 3, 5 and 6, characterized in that: Each of the modular sockets (50) comprises: a body (51); and The connecting portion (52) is arranged at the edge of the main body (51) and is detachably connected to the edge of the box body (10) corresponding to the first opening (11).

9. The junction box (100) according to claim 8, characterized in that: Each of the modular sockets (50) further comprises: The guide portion (53) comprises a fixed end and a free end, wherein the fixed end is coupled to the connecting portion (52), and the free end is farther away from the connecting portion (52) than the fixed end, so as to be suitable for guiding the communication interface of the corresponding drawer assembly to dock with the modular socket (50).

10. The junction box (100) according to claim 9, characterized in that: The free end of the guide portion (53) is a pointed end.

11. The junction box (100) according to any one of claims 3, 5 and 6, characterized in that: The box body (10) further comprises: A third opening (13) is arranged on a side of the box body (10) adjacent to the plurality of drawer assemblies; A fourth opening (14) is arranged on a side of the box body (10) away from the plurality of drawer assemblies, suitable for accommodating the led-out primary outgoing wires; and A fifth opening (15) is arranged on a side of the box body (10) away from the plurality of drawer assemblies; and the junction box (100) further comprises: A plurality of primary incoming busbars (81) arranged in parallel are arranged at the third opening (13) and coupled to the accommodating cavity (16) of the box body (10); A plurality of primary outlet interfaces (82) are arranged at the first opening (11) and coupled to the box body (10); and A plurality of busbar clamps (83) are arranged at the fifth opening (15) and are electrically connected to the plurality of primary incoming busbars (81) in a one-to-one correspondence, so as to enable the power supply busbar to supply power to the plurality of primary incoming busbars (81).

12. The junction box (100) according to claim 11, characterized in that: The plurality of primary line outlet interfaces (82) are integrated on the plurality of modular sockets (50) in a one-to-one correspondence.

13. The junction box (100) according to claim 11, characterized in that: The circuit board (20) is provided with a through hole (21), and the junction box (100) further comprises: A plurality of conductive connecting members (84) are inserted into the through holes (21) and are electrically connected to the plurality of primary incoming busbars (81) and the plurality of busbar clamps (83) in a one-to-one correspondence.

14. The junction box (100) according to claim 11, characterized in that: Also includes: A pair of insulating support members (85) are arranged in parallel at both ends of the plurality of primary incoming busbars (81) to support the plurality of primary incoming busbars (81).

15. A power distribution cabinet, characterized in that: include: Cabinet; The junction box (100) according to any one of claims 1 to 14, wherein the junction box (100) is coupled to the cabinet; as well as A plurality of drawer assemblies are arranged on a side of the junction box (100) adjacent to the first opening (11), and any one of the plurality of drawer assemblies can be connected to the cabinet in a drawable manner.

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