A plug-in bus duct with rapid heat dissipation structure and installation method thereof

Abstract

This invention discloses a plug-in busbar trunking with a rapid heat dissipation structure and its installation method. It includes an aluminum alloy frame and conductive busbars. The aluminum alloy frame has plug-in windows. The conductive busbars include first, second, third, and fourth current-carrying copper busbars and a grounding copper busbar. Each conductive busbar includes a main body, a plug-in portion, and a connecting portion. The connecting portions at the same end are parallel to each other and extend to the outside of the aluminum alloy frame. The main bodies of the first current-carrying copper busbar, the grounding copper busbar, and the second current-carrying copper busbar are sequentially and tightly fitted together. The main bodies of the third and fourth current-carrying copper busbars are located on the bottom and top surfaces of the grounding copper busbar, respectively. The plug-in portions of each conductive busbar are located within the plug-in windows. The inner wall of the aluminum alloy frame is fitted to the main bodies of the first, second, third, and fourth current-carrying copper busbars. This plug-in busbar trunking allows the heat generated on the current-carrying copper busbars to be conducted more evenly and directly to the aluminum alloy frame, avoiding localized overheating between phases.

Description

Technical Field

[0001] The present invention relates to the technical field of bus ducts, and in particular to a plug-in bus duct with a rapid heat dissipation structure and an installation method thereof. Background Art

[0002] Busbar ducts are busbar systems consisting of a metal plate protective casing, conductive bars, insulation materials, and related accessories. As an efficient and reliable method for power transmission and distribution, busbar ducts have become an indispensable wiring method in high-rise buildings and large factories.

[0003] Busbar ducts include air-type busbar ducts and compact busbar ducts. Air-type busbar ducts utilize insulating pads to support conductive bars within a housing. Insulated by air, they are susceptible to dust and moisture, leading to short circuits. With the advancement of power transmission and distribution technology, air-type busbar ducts have been gradually replaced by compact busbar ducts. Compact busbar ducts cover conductive bars with insulating material and then fasten them together on both sides. Heat is dissipated through an aluminum alloy frame surrounding the bars. While compact busbar ducts offer the advantages of small size and compact structure, they currently have compact busbar ducts with tightly packed conductive bars. For example, the compact busbar duct disclosed in Chinese Patent Publication No. CN219717833U has compact, parallel conductive bars. While heat is transferred to the outside through metal side panels, the compact arrangement between the lines slows heat dissipation from intermediate phases (e.g., phases B and C), resulting in higher temperatures for the conductive bars. Prolonged high-temperature operation can accelerate insulation aging and even damage the insulation. Thermal expansion and deformation can also occur, directly impacting the busbar duct's service life and the safety of associated equipment.

[0004] Although compact busbars offer high reliability in design and manufacturing, their compact structure and insufficient heat dissipation can lead to failures under prolonged, high-load operation. This is particularly true in applications where power is drawn from the busbars, typically by connecting them to plug-in boxes. The high currents carried by the conductive bars in these scenarios pose a severe challenge to the heat dissipation of the compact busbars. Given the potential risks and shortcomings of existing plug-in busbars, there is an urgent need to develop busbars with efficient heat dissipation. Summary of the Invention

[0005] In order to solve the above problems, the present invention provides a plug-in bus duct with a rapid heat dissipation structure and an installation method thereof.

[0006] In a first aspect of the present invention, a plug-in bus duct with a rapid heat dissipation structure is provided, comprising an aluminum alloy frame and a conductive bar connected to the aluminum alloy frame; a plug-in window is provided on the aluminum alloy frame; the conductive bar comprises a first current-carrying copper bar, a second current-carrying copper bar, a third current-carrying copper bar, a fourth current-carrying copper bar and a grounding copper bar, each of the conductive bars comprising a main body, a plug-in portion and connecting portions arranged at both ends of the main body, the connecting portions at the same end being parallel to each other and extending to the outside of the aluminum alloy frame; the main body of the first current-carrying copper bar, the main body of the grounding copper bar and the main body of the second current-carrying copper bar are tightly fitted in sequence, the main body of the third current-carrying copper bar and the main body of the fourth current-carrying copper bar are respectively located on the bottom and top surfaces of the grounding copper bar, and the plug-in portions of each conductive bar are arranged in the plug-in window; the inner wall of the aluminum alloy frame is respectively fitted with the main bodies of the first current-carrying copper bar, the second current-carrying copper bar, the third current-carrying copper bar and the fourth current-carrying copper bar.

[0007] In a second aspect of the present invention, a method for installing a plug-in bus duct with a rapid heat dissipation structure is provided, which is applicable to the above-mentioned plug-in bus duct, comprising:

[0008] Place the main body of the third current-carrying copper busbar horizontally on the base plate of the aluminum alloy frame, and connect the left and right side plates of the aluminum alloy frame to the base plate of the aluminum alloy frame through fasteners. The left and right side plates position the third current-carrying copper busbar, and at the same time, form a vertical channel and a horizontal channel between the left and right side plates of the aluminum alloy frame;

[0009] The first current-carrying copper bar, the grounding copper bar, and the second current-carrying copper bar are sequentially placed side by side in the vertical channel, with the main body of the first current-carrying copper bar and the main body of the second current-carrying copper bar in contact with the inner walls of the left and right side plates respectively;

[0010] The main body of the fourth current-carrying copper bar is placed horizontally in the horizontal channel. The plug-in portion of the first current-carrying copper bar, the plug-in portion of the grounding copper bar, and the plug-in portion of the second current-carrying copper bar respectively extend through the main body of the fourth current-carrying copper bar to the outside of the horizontal channel. The plug-in portion of the third current-carrying copper bar and the plug-in portion of the fourth current-carrying copper bar both extend to the outside of the horizontal channel. The left and right side plates form a positioning for the fourth current-carrying copper bar. The top plate of the aluminum alloy frame is connected to the left and right side plates by fasteners. The main body of the fourth current-carrying copper bar contacts the inner wall of the top plate, and the plug-in portions of each copper bar are all located in the plug-in window of the top plate.

[0011] The front and rear ends of the aluminum alloy frame are each provided with a connection portion of the third current-carrying copper bar, a connection portion of the first current-carrying copper bar, a connection portion of the grounding copper bar, a connection portion of the second current-carrying copper bar, and a connection portion of the fourth current-carrying copper bar, which are arranged sequentially and in parallel;

[0012] Insert the connector of the plug-in box into the plug-in window to complete the electrical connection between the copper bars in the aluminum alloy frame and the on-off circuit in the plug-in box.

[0013] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0014] The plug-in bus duct of this technical solution changes the wiring layout of each conductive busbar in the middle section. The conductive busbar includes a grounding copper busbar and four current-carrying copper buses. Since the grounding copper busbar does not bear the current-carrying function during the normal power transmission and distribution process of the bus duct, that is, the current passing through the grounding copper busbar is zero, the grounding copper busbar hardly conducts heat to the aluminum alloy frame, while the current-carrying copper busbar bears the current of phases A, B, C, and N, and needs to conduct heat outward for heat dissipation; therefore, in this solution, the grounding copper busbar is clamped between two current-carrying copper buses in the middle section of the bus duct, and the other two current-carrying copper buses are respectively mounted on the top and bottom surfaces. The inner wall of the aluminum alloy frame and the main body of each current-carrying copper busbar are connected. This conductive busbar layout design not only significantly increases the heat dissipation area, but also enables the heat generated on the current-carrying copper busbar to be conducted to the aluminum alloy frame more evenly and directly, which helps to quickly conduct the heat generated by the current passing through the busbar trunking to the external environment, thereby maintaining the stability of the internal temperature of the busbar trunking, avoiding local overheating between phases, and improving the service life and safety of the busbar trunking; the connecting parts at both ends of each conductive busbar still extend parallel to the front and rear ends of the aluminum alloy frame, which is convenient for bridging between busbar trunkings. At the same time, the plug-in parts of each conductive busbar are arranged in the plug-in window for quick connection to the plug-in box to obtain power. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional diagram of a plug-in bus duct according to an embodiment of the present invention.

[0016] Figure 2 This is a three-dimensional diagram of the aluminum alloy frame according to an embodiment of the present invention.

[0017] Figure 3 This is a three-dimensional diagram of the conductive bar inside the aluminum alloy frame according to an embodiment of the present invention.

[0018] Figure 4 FIG. 1 is a partial schematic diagram of a conductive bar according to an embodiment of the present invention.

[0019] Figure 5 Exploded view of each conductive bar according to an embodiment of the present invention.

[0020] Figure 6 This is a partial schematic diagram of the fourth current-carrying copper busbar according to an embodiment of the present invention.

[0021] Figure 7 This is a three-dimensional diagram of the side panel of an embodiment of the present invention.

[0022] Figure 8 This is a cross-sectional view of an aluminum alloy frame according to an embodiment of the present invention.

[0023] Figure 9 This is a cross-sectional view of a plug-in bus duct according to an embodiment of the present invention.

[0024] Figure 10 This is an exploded view of the plug-in bus duct and the plug-in box according to an embodiment of the present invention.

[0025] Figure 11 This is a partial schematic diagram of the plug-in bus duct after opening the plug-in window flip cover according to an embodiment of the present invention.

[0026] Figure 12 This is a three-dimensional diagram of a plug-in box according to an embodiment of the present invention.

[0027] Figure 13 This is a three-dimensional diagram of a connector according to an embodiment of the present invention.

[0028] Figure 14 This is an exploded view of a connector according to an embodiment of the present invention. DETAILED DESCRIPTION

[0029] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings and embodiments.

[0030] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, an integral connection, or a detachable connection; it can be a mechanical connection or an electrical connection, or it can be the internal communication between two components; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0032] Example 1

[0033] Combined with attachment Figure 1 To the attached Figure 14The technical solution of the present invention is a plug-in bus duct with a rapid heat dissipation structure, comprising an aluminum alloy frame 1 and a conductive bar connected to the aluminum alloy frame 1; the aluminum alloy frame 1 is provided with a plug-in window 14; the conductive bar comprises a first current-carrying copper bar 2, a second current-carrying copper bar 3, a third current-carrying copper bar 4, a fourth current-carrying copper bar 5 and a grounding copper bar 6, each of the conductive bars comprises a main body, a plug-in portion and a connecting portion arranged at both ends of the main body, the first current-carrying copper bar 2 comprises a first main body 21, a first plug-in portion 22 and a first connecting portion 23 arranged at both ends of the first main body 21, the second current-carrying copper bar 3 comprises a second main body 31, a second plug-in portion 32 and a grounding copper bar 6 The second connecting parts 33 at both ends of the part 31, the third current-carrying copper busbar 4 includes a third main body part 41, a third plugging part 42 and a third connecting part 43 provided at both ends of the third main body part 41, the fourth current-carrying copper busbar 5 includes a fourth main body part 51, a fourth plugging part 52 and a fourth connecting part 53 provided at both ends of the fourth main body part 51, the grounding copper busbar 6 includes a fifth main body part 61, a fifth plugging part 62 and a fifth connecting part 63 provided at both ends of the fifth main body part 61, and the respective connecting parts (the first connecting part 23, the second connecting part 33, the third connecting part 43, the fourth connecting part 53, and the fifth connecting part 63) at the same end are parallel to each other and extend to the outside of the aluminum alloy frame 1;

[0034] The first main body 21 of the first current-carrying copper busbar 2, the fifth main body 61 of the grounding copper busbar 6, and the second main body 31 of the second current-carrying copper busbar 3 are tightly fitted in sequence, and the third main body 41 of the third current-carrying copper busbar 4 and the fourth main body 51 of the fourth current-carrying copper busbar 5 are respectively located on the bottom and top surfaces of the grounding copper busbar 6;

[0035] The plug-in parts (first plug-in part 22, second plug-in part 32, third plug-in part 42, fourth plug-in part 52, fifth plug-in part 62) of each conductive bar are arranged in the plug-in window 14; the inner wall of the aluminum alloy frame 1 is respectively in contact with the first main body 21 of the first current-carrying copper bar, the second main body 31 of the second current-carrying copper bar, the third main body 41 of the third current-carrying copper bar, and the fourth main body 51 of the fourth current-carrying copper bar.

[0036] In this embodiment, wiring is arranged according to the first current-carrying copper bus 2 , the second current-carrying copper bus 3 , the third current-carrying copper bus 4 , and the fourth current-carrying copper bus 5 to connect external A phase, B phase, C phase, and N phase.

[0037] In this embodiment, the first plug-in portion 22 , the second plug-in portion 32 , the third plug-in portion 42 , the fourth plug-in portion 52 , and the fifth plug-in portion 62 are used to be electrically connected to the plug-in box 7 to obtain power from the bus duct.

[0038] In this embodiment, the connection portions at the same end are parallel to each other and extend to the outside of the aluminum alloy frame 1 , so as to facilitate bridging between the bus ducts.

[0039] In this embodiment, the attached Figure 1 and attached Figure 7 The direction X in the diagram is the direction of current flow of the conductive bus.

[0040] In this embodiment, as shown in the attached Figure 3 and attached Figure 9 As shown, the conductive bars in the middle section of the bus duct are distributed in an I-shape. Under the size limit of the dense bus duct, the external contact area of ​​the conductive bars is realized. Taking a bus duct with a width of 150 mm, a depth of 120 mm, and a length of 2 m as an example, the heat dissipation area of ​​the conductive bars in this embodiment is increased by at least 90% compared with the existing technology, which can significantly improve the heat dissipation efficiency of the bus duct.

[0041] In this embodiment, the routing of each conductive busbar in the middle section of the bus duct is changed. Since the grounding copper busbar 6 does not carry current during normal power transmission and distribution in the bus duct, that is, the current passing through the grounding copper busbar 6 is zero, the grounding copper busbar 6 hardly conducts heat to the aluminum alloy frame 1. The current-carrying copper busbar carries the current of phases A, B, C, and N and needs to conduct heat outward for dissipation. Therefore, in this solution, the grounding copper busbar 6 is clamped between two current-carrying copper buses in the middle section of the bus duct, and the other two current-carrying copper buses are respectively mounted on the top and bottom surfaces. The inner wall of the aluminum alloy frame 1 is in contact with the main body of each current-carrying copper busbar. This conductive busbar layout design not only significantly increases the heat dissipation area, but also allows the heat generated by the current-carrying copper busbar to be more evenly and directly conducted to the aluminum alloy frame 1, which helps to quickly conduct the heat generated by the current passing through the bus duct to the external environment, thereby maintaining a stable temperature inside the bus duct and avoiding local overheating between phases.

[0042] In this embodiment, as shown in the attached Figure 2As shown, the aluminum alloy frame 1 includes a base plate 11, side plates 12 connected to both sides of the base plate 11, and a top plate 13 connected to the side plates 12. A accommodating cavity 15 is provided in the aluminum alloy frame 1. A wire outlet 151 is provided at both ends of the accommodating cavity 15. The middle cross-section of the accommodating cavity 15 is I-shaped. The middle part of the accommodating cavity 15 includes a first horizontal channel 152, a second horizontal channel 153 and a vertical channel 154. The vertical channel 154 is perpendicular to the first horizontal channel 152 and the second horizontal channel 153 respectively; the first main body 21 of the first current-carrying copper bus 2, the fifth main body 61 of the grounding copper bus 6 and the second main body 31 of the second current-carrying copper bus 3 are all located in the vertical channel 154, and the third main body 41 of the third current-carrying copper bus 4 and the fourth main body 51 of the fourth current-carrying copper bus 5 are respectively located in the first horizontal channel 152 and the second horizontal channel 153.

[0043] In this embodiment, the base plate 11 , the side plate 12 and the top plate 13 are all made of aluminum alloy with outstanding thermal conductivity, and have excellent heat dissipation performance in the application of plug-in dense bus duct.

[0044] In this embodiment, the side panels 12 are fixed to the base panel 11 via fasteners, and the side panels 12 are fixed to the top panel 13 via fasteners.

[0045] In this embodiment, combined with the Figure 3 To the attached Figure 6 The plug-in window 14 is located on the top plate 13 near the outlet 151. A through slot 511 is provided on the fourth main body 51 of the fourth current-carrying copper busbar 5 at a position opposite to the plug-in window 14. The through slots 511 are staggered. The first plug-in portion 22 of the first current-carrying copper busbar 2, the fifth plug-in portion 62 of the grounding copper busbar 6, and the second plug-in portion 32 of the second current-carrying copper busbar 3 extend through the through slots 511 into the plug-in window 14. In order to improve the heat dissipation efficiency of the conductive bars, the arrangement of the conductive bars is adjusted in the middle section of the bus duct. In order to facilitate the connection of the plug-in box, this embodiment makes a concession design on the fourth main body 51 of the fourth current-carrying copper busbar 5, and leads the first plug-in portion 22, the fifth plug-in portion 62, and the second plug-in portion 32 out of the fourth main body 51 of the fourth current-carrying copper busbar 5.

[0046] In this embodiment, according to the attached Figure 4 To the attached Figure 6As shown, to facilitate the processing of each plug-in portion on its respective conductive busbar, the first plug-in portion 22 of the first current-carrying copper busbar 2 extends upward from the first main body portion 21, the fifth plug-in portion 62 of the grounding copper busbar 6 extends upward from the fifth main body portion 61, the second plug-in portion 32 of the second current-carrying copper busbar 3 extends upward from the second main body portion 31, the third plug-in portion 42 of the third current-carrying copper busbar 4 extends upward from the third connecting portion 43, and the fourth current-carrying copper busbar 5 extends upward from the fourth main body portion 51. Therefore, it is necessary to set the plug-in window 14 near the outlet 151 to extend the middle length of the busbar duct accommodating cavity 15. The I-shaped channel in the middle of the accommodating cavity 15 is the key to increasing the heat dissipation area of ​​the busbar duct.

[0047] In this embodiment, the through slot 511 cooperates with the first plug-in portion 22, the fifth plug-in portion 62, and the second plug-in portion 32 so that the first current-carrying copper bus 2, the grounding copper bus 6, and the second current-carrying copper bus 3 can remain relatively fixed with the fourth current-carrying copper bus 5.

[0048] In this embodiment, as shown in the attached Figure 7 As shown, the side plate 12 includes a first wide body portion 121, a narrowed portion 122 and a second wide body portion 123 in sequence along the direction X of the conductive bus. The upper and lower side edges of the first wide body portion 121, the narrowed portion 122 and the second wide body portion 123 are all bent outward to form a positioning skirt 124. The middle portion of the narrowed portion 122 protrudes toward the accommodating cavity 15 to form a positioning step 125. The third main body portion 41 of the third current-carrying copper bus 4 and the fourth main body portion 51 of the fourth current-carrying copper bus 5 are both clamped between the positioning steps 125. The structure of the side plate 12 ensures that the third current-carrying copper bus 4 and the fourth current-carrying copper bus 5 remain relatively fixed relative to the aluminum alloy frame 1.

[0049] In this embodiment, the outer walls of the first wide body portion 121, the narrowed portion 122 and the second wide body portion 123 are all provided with heat dissipation grooves 126; the heat dissipation grooves 126 are provided to increase the contact area between the aluminum alloy frame 1 and the external environment, further improving the heat dissipation efficiency of the bus duct.

[0050] In this embodiment, as shown in the attached Figure 5As shown, the fifth main body 61 of the grounding copper bus 6 and the fifth connecting portion 63 of the grounding copper bus 6 are in the same plane and parallel to each other; a first bending portion 24 is provided between the first main body 21 of the first current-carrying copper bus 2 and the first connecting portion 23 of the first current-carrying copper bus 2, and the first main body 21 of the first current-carrying copper bus 2 and the first connecting portion 23 of the first current-carrying copper bus 2 are parallel to each other; a second bending portion 34 is also provided between the second main body 31 of the second current-carrying copper bus 3 and the second connecting portion 33 of the second current-carrying copper bus 3, and the second main body 31 of the second current-carrying copper bus 3 and the second connecting portion 33 of the second current-carrying copper bus 3 are parallel to each other.

[0051] In this embodiment, as shown in the attached Figure 5 As shown, the third main portion 41 of the third current-carrying copper busbar 4 and the third connecting portion 43 of the third current-carrying copper busbar 4 are perpendicular to each other, and a third notch 44 is provided between the third connecting portions 43 of the third current-carrying copper busbar 4; the fourth main portion 51 of the fourth current-carrying copper busbar 5 and the fourth connecting portion 53 of the fourth current-carrying copper busbar 5 are perpendicular to each other, and a fourth notch 54 is provided between the fourth connecting portions 53 of the fourth current-carrying copper busbar 5. The third notch 44 and the fourth notch 54 are adapted to the narrowed portion 122 of the side plate 12. When the bus duct is assembled, the narrowed portion 122 of the side plate 12 is inserted into the corresponding third notch 44 or fourth notch 54, so that the inner wall of the side plate 12 is in contact with the first main portion 21 of the first current-carrying copper busbar 2 and the second main portion 31 of the second current-carrying copper busbar 3, which facilitates direct heat conduction from the current-carrying copper busbars and accelerates heat dissipation.

[0052] In this embodiment, the cross-sectional area at the junction of the third main portion 41 of the third current-carrying copper busbar 4 and the third connecting portion 43 thereof is not less than the cross-sectional area of ​​the third main portion 41 of the third current-carrying copper busbar 4 and the cross-sectional area of ​​the third connecting portion 43 thereof. The cross-sectional area at the junction of the fourth main portion 51 of the fourth current-carrying copper busbar 5 and the fourth connecting portion 53 thereof is not less than the cross-sectional area of ​​the fourth main portion 51 of the fourth current-carrying copper busbar 5 and the cross-sectional area of ​​the fourth connecting portion 53 thereof. The above cross-sectional area restrictions are intended to ensure the overall current-carrying capacity of the third current-carrying copper busbar 4 and the fourth current-carrying copper busbar 5.

[0053] In this embodiment, the outer periphery of the main body of each conductive busbar is covered with an insulating layer. The insulating layer can be made of heat shrink tubing or wrapped with insulating tape to prevent short circuits between phases. Preferably, the first bend 24 of the first current-carrying copper busbar 2 and the second bend 34 of the second current-carrying copper busbar 3 are also covered with an insulating layer.

[0054] In this embodiment, as shown in the attached Figure 12 To the attached Figure 14 As shown, it also includes a plug-in box 7, and a plug-in connector 8 is provided on the back of the plug-in connector 7. A conductive member 81 is fixed on the plug-in connector 8, and a conductive spring row 82 is connected to the conductive member 81. The conductive spring row 82 is composed of a plurality of conductive spring wires 83 arranged in parallel. The ends of the conductive spring wires 83 are fixed by welding. The conductive spring wires 83 include a hook portion 831, a protrusion 832 and an abutment portion 833. The head of the conductive member 81 is provided with a slot 811. The hook portion 831 is snapped into the slot 811 of the conductive member 81 and abuts against the back of the conductive member 81. The abutment portion 833 presses against the bearing portion 812 on the front of the conductive member 81, and the protrusion 832 is used to electrically connect with the plug-in connector.

[0055] In this embodiment, according to the attached Figure 11 As shown, the plug window 14 is provided with five plug-in ports, with the first plug-in portion 22, the second plug-in portion 32, the third plug-in portion 42, the fourth plug-in portion 52, and the fifth plug-in portion 62 respectively located within the plug-in ports. When the connector 8 of the plug box 7 is mated with the plug-in ports of the plug window 14, the conductive spring row 82 forms an electrical connection with each plug-in portion. The raised portions 832 of the conductive spring wire 83 each independently contact the plug-in portion to provide overtravel pressure. Therefore, compared to existing integrated spring clips, the connector 8 of this embodiment has a more stable electrical connection. Even if there is an installation error between the plug box 7 and the aluminum alloy frame 1, power can still be drawn from the busbar, facilitating quick plug-in assembly.

[0056] Example 2

[0057] Combined with attachment Figure 1 To the attached Figure 14 The technical solution of the present invention is a method for installing a plug-in bus duct with a rapid heat dissipation structure, which is applicable to the plug-in bus duct described in Example 1, comprising:

[0058] The third main body 41 of the third current-carrying copper busbar 4 is horizontally placed on the base plate 11 of the aluminum alloy frame 1. The left and right side plates 12 of the aluminum alloy frame 1 are connected to the base plate 11 of the aluminum alloy frame 1 by fasteners. The left and right side plates 12 position the third current-carrying copper busbar 4. At the same time, a vertical channel 154 and a horizontal channel 153 are formed between the left and right side plates 12 of the aluminum alloy frame 1.

[0059] The first current-carrying copper bus 2, the grounding copper bus 6, and the second current-carrying copper bus 3 are sequentially placed side by side in the vertical channel 154, with the first main body 21 of the first current-carrying copper bus 2 and the second main body 31 of the second current-carrying copper bus 3 in contact with the inner walls of the left and right side plates 12, respectively;

[0060] The fourth main body 51 of the fourth current-carrying copper bar 5 is placed horizontally in the horizontal channel 153. The first plug-in portion 22 of the first current-carrying copper bar 2, the fifth plug-in portion 62 of the grounding copper bar 6, and the second plug-in portion 32 of the second current-carrying copper bar 3 respectively extend through the fourth main body 51 of the fourth current-carrying copper bar 5 to the outside of the horizontal channel 153. The third plug-in portion 42 of the third current-carrying copper bar 4 and the fourth plug-in portion 52 of the fourth current-carrying copper bar 5 both extend to the outside of the horizontal channel 153. The left and right side plates 12 position the fourth current-carrying copper bar 5. The top plate 13 of the aluminum alloy frame 1 is connected to the left and right side plates 12 by fasteners. The fourth main body 51 of the fourth current-carrying copper bar 5 is in contact with the inner wall of the top plate 13. The plug-in portions of each copper bar are all located in the plug-in window 14 of the top plate.

[0061] The front and rear ends of the aluminum alloy frame 1 are provided with the third connection portion 43 of the third current-carrying copper bus 4, the first connection portion 23 of the first current-carrying copper bus 2, the fifth connection portion 63 of the grounding copper bus 6, the second connection portion 33 of the second current-carrying copper bus 3 and the fourth connection portion 53 of the fourth current-carrying copper bus 5, which are arranged sequentially and in parallel;

[0062] Insert the connector 8 of the plug-in box 7 into the plug-in window 14 to complete the electrical connection between the copper bars in the aluminum alloy frame 1 and the on-off circuit in the plug-in box 7 .

[0063] The installation method of the plug-in bus duct with a rapid heat dissipation structure in this embodiment can realize the rapid assembly of the plug-in bus duct. The aluminum alloy frame positioning structure is used to ensure the heat dissipation contact between the current-carrying copper busbar and the aluminum alloy frame. At the same time, the plug-in portion of each conductive busbar extends to the plug-in window, which is convenient for rapid connection with the external plug-in box.

[0064] The above is a schematic description of the present invention and its embodiments, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs a structure and embodiment similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A plug-in bus duct with a rapid heat dissipation structure, characterized in that: It comprises an aluminum alloy frame and a conductive bar connected in the aluminum alloy frame; a plug-in window is provided on the aluminum alloy frame; the conductive bar comprises a first current-carrying copper bar, a second current-carrying copper bar, a third current-carrying copper bar, a fourth current-carrying copper bar and a grounding copper bar, each of the conductive bars comprises a main body, a plug-in part and connecting parts arranged at both ends of the main body, and each of the connecting parts at the same end is parallel to each other and extends to the outside of the aluminum alloy frame; the main body of the first current-carrying copper bar, the main body of the grounding copper bar and the main body of the second current-carrying copper bar are closely fitted in sequence, the main body of the third current-carrying copper bar and the main body of the fourth current-carrying copper bar are respectively located on the bottom surface and the top surface of the grounding copper bar, and the plug-in parts of each conductive bar are arranged in the plug-in window; the inner wall of the aluminum alloy frame is respectively fitted with the main bodies of the first current-carrying copper bar, the second current-carrying copper bar, the third current-carrying copper bar and the fourth current-carrying copper bar; The aluminum alloy frame comprises a base plate, side plates connected to both sides of the base plate, and a top plate connected to the side plates. A housing cavity is provided in the aluminum alloy frame. Both ends of the housing cavity are provided with outlets. The middle cross section of the housing cavity is I-shaped. The middle part of the housing cavity comprises a first horizontal channel, a second horizontal channel, and a vertical channel. The vertical channel is perpendicular to the first horizontal channel and the second horizontal channel respectively. The main body of the first current-carrying copper bar, the main body of the grounding copper bar, and the main body of the second current-carrying copper bar are all located in the vertical channel. The main body of the third current-carrying copper bar and the main body of the fourth current-carrying copper bar are respectively located in the first horizontal channel and the second horizontal channel. The plug-in window is located on the top plate near the wire outlet, a through slot is provided on the main body of the fourth current-carrying copper busbar facing the plug-in window, the through slots are staggered, and the plug-in portion of the first current-carrying copper busbar, the plug-in portion of the grounding copper busbar and the plug-in portion of the second current-carrying copper busbar respectively pass through the through slots and extend into the plug-in window.

2. The plug-in bus duct with a rapid heat dissipation structure according to claim 1, characterized in that: The side plate includes a first wide body portion, a narrowed portion, and a second wide body portion in sequence along the direction of conduction of the conductive bus. The upper and lower side edges of the first wide body portion, the narrowed portion, and the second wide body portion are bent outward to form a positioning skirt. The middle portion of the narrowed portion protrudes toward the accommodating cavity to form a positioning step. The main body of the third current-carrying copper bus and the main body of the fourth current-carrying copper bus are clamped between the positioning steps.

3. The plug-in bus duct with a rapid heat dissipation structure according to claim 2, characterized in that: The outer walls of the first wide body portion, the narrowed portion and the second wide body portion are all provided with heat dissipation grooves.

4. A plug-in bus duct with a rapid heat dissipation structure according to any one of claims 1 to 3, characterized in that: The main body of the grounding copper bar and the connecting part of the grounding copper bar are in the same plane and are parallel to each other; a bending part is provided between the main body of the first current-carrying copper bar and the connecting part of the first current-carrying copper bar, and the main body of the first current-carrying copper bar and the connecting part of the first current-carrying copper bar are parallel to each other; a bending part is also provided between the main body of the second current-carrying copper bar and the connecting part of the second current-carrying copper bar, and the main body of the second current-carrying copper bar and the connecting part of the second current-carrying copper bar are parallel to each other.

5. The plug-in bus duct with a rapid heat dissipation structure according to any one of claims 1 to 3, characterized in that: The main body of the third current-carrying copper bar and the connecting part of the third current-carrying copper bar are perpendicular to each other, and a gap is provided between the connecting parts of the third current-carrying copper bar; the main body of the fourth current-carrying copper bar and the connecting part of the fourth current-carrying copper bar are perpendicular to each other, and a gap is also provided between the connecting parts of the fourth current-carrying copper bar.

6. The plug-in bus duct with a rapid heat dissipation structure according to any one of claims 1 to 3, characterized in that: The outer periphery of the main body of each conductive bar is covered with an insulating layer.

7. The plug-in bus duct with a rapid heat dissipation structure according to any one of claims 1 to 3, characterized in that: It also includes a plug-in box, the back of which is provided with a plug-in connector, a conductive member is fixed on the plug-in connector, a conductive spring row is connected to the conductive member, the conductive spring row is composed of a plurality of conductive spring wires arranged in parallel, the ends of the conductive spring wires are fixed by welding, the conductive spring wire includes a hook portion, a protrusion and an abutment portion, the hook portion is clamped on the back of the conductive member, the abutment portion is pressed against the front of the conductive member, and the protrusion is used to be electrically connected to the plug-in connector.

8. A method for installing a plug-in bus duct with a rapid heat dissipation structure, characterized in that: The plug-in bus duct according to any one of claims 1 to 7 comprises: The main body of the third current-carrying copper bar is horizontally placed on the base plate of the aluminum alloy frame, and the left and right side plates of the aluminum alloy frame are connected to the base plate of the aluminum alloy frame through fasteners, so that the left and right side plates position the third current-carrying copper bar, and a vertical channel and a horizontal channel are formed between the left and right side plates of the aluminum alloy frame; The first current-carrying copper bar, the grounding copper bar and the second current-carrying copper bar are sequentially placed side by side in the vertical channel, and the main body of the first current-carrying copper bar and the main body of the second current-carrying copper bar are in contact with the inner walls of the left and right side plates respectively; The main body of the fourth current-carrying copper bar is horizontally placed in the horizontal channel, the plug-in portion of the first current-carrying copper bar, the plug-in portion of the grounding copper bar and the plug-in portion of the second current-carrying copper bar respectively extend through the main body of the fourth current-carrying copper bar to the outside of the horizontal channel, the plug-in portion of the third current-carrying copper bar and the plug-in portion of the fourth current-carrying copper bar both extend to the outside of the horizontal channel, the left and right side plates form a positioning for the fourth current-carrying copper bar, the top plate of the aluminum alloy frame is connected to the left and right side plates by fasteners, the main body of the fourth current-carrying copper bar contacts the inner wall of the top plate, and the plug-in portions of each copper bar are located in the plug-in window of the top plate; The front and rear outlets of the aluminum alloy frame are each provided with a connection portion of the third current-carrying copper bar, a connection portion of the first current-carrying copper bar, a connection portion of the grounding copper bar, a connection portion of the second current-carrying copper bar, and a connection portion of the fourth current-carrying copper bar, which are arranged sequentially and in parallel; Insert the connector of the plug-in box into the plug-in window to complete the electrical connection between each copper busbar in the aluminum alloy frame and the on-off circuit in the plug-in box.

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