Current-sharing composite busbar structure

Abstract

The utility model belongs to the technical field of current-sharing busbars, and particularly relates to a current-sharing composite busbar structure, which comprises a first magnetic core, a second magnetic core and a third magnetic core, the peripheries of the first magnetic core, the second magnetic core and the third magnetic core are respectively provided with a protection piece, and each protection piece comprises an upper clamping plate and a lower clamping plate. The upper clamping plate abuts against the top of any magnetic core, the lower clamping plate abuts against the bottom of any magnetic core, the two ends of the upper clamping plate and the two ends of the lower clamping plate are connected through screws, and the sides, used for abutting against the magnetic cores, of the upper clamping plate and the lower clamping plate are each provided with a heat conduction layer used for conducting heat of the magnetic cores. The upper clamping plate and the lower clamping plate tightly abut against the magnetic core, heat generated by the magnetic core can be rapidly conducted to the heat conduction layer, and then the heat conduction layer guides the heat on the surface of the magnetic core to the cooling fins. And finally, the exported heat is discharged to the outside through the heat dissipation fins, so that the heat dissipation performance of the magnetic core is favorably improved.

Description

Technical Field

[0001] This utility model belongs to the field of flow equalization busbar technology, specifically relating to a flow equalization composite busbar structure. Background Technology

[0002] Current sharing busbars are electrical connection devices used to balance and distribute current. They ensure a uniform current distribution among multiple loads or power sources, thereby improving the stability and efficiency of the entire system. In power systems, the use of current sharing busbars can reduce losses caused by current imbalance, extend equipment lifespan, and help improve the reliability of power transmission.

[0003] In existing technologies, some high-frequency current devices require the installation of a magnetic core inside the busbar to absorb or buffer high-frequency energy, suppress high-frequency oscillations, and enable the current to be distributed more smoothly in each parallel branch, thereby improving the current sharing effect. However, in a long-term high-frequency current environment, the magnetic core is prone to overheating, which may lead to equipment damage. Utility Model Content

[0004] In view of this, the present invention provides a flow-equalizing composite busbar structure, the purpose of which is to accelerate the discharge rate of the magnetic core surface temperature by adding protective components on the magnetic core, thereby helping to reduce the overheating of the magnetic core after long-term use.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A flow-equalizing composite busbar structure includes a first magnetic core, a second magnetic core, and a third magnetic core. The first, second, and third magnetic cores are all surrounded by protective components. Each protective component includes an upper clamping plate and a lower clamping plate. The upper clamping plate abuts against the top of any magnetic core, and the lower clamping plate abuts against the bottom of any magnetic core. The two ends of the upper and lower clamping plates are connected by screws.

[0007] The upper and lower clamping plates are provided with a heat-conducting layer on the side that contacts the magnetic core, and heat dissipation fins on the side that does not contact the magnetic core. The heat dissipation fins are used to dissipate the heat conducted by the heat-conducting layer.

[0008] As a preferred technical solution, the upper clamping plate and the lower clamping plate are provided with grooves on their opposite sides, the grooves being adapted to the first magnetic core, the second magnetic core and the third magnetic core, wherein the heat-conducting layer is disposed in the groove.

[0009] Furthermore, an adhesive layer is provided on the thermally conductive layer, which is used to bond the thermally conductive layer to any magnetic core.

[0010] Furthermore, it also includes: a first busbar, a second busbar, a third busbar, and a fourth busbar, wherein the second busbar is stacked on the first busbar and one end of the second busbar is aligned with one end of the first busbar, the third busbar is partially stacked on the first busbar and a predetermined distance is left between the third busbar and the second busbar, the predetermined distance being greater than 0, and the fourth busbar is stacked on the third busbar and part of the second busbar, and one end of the fourth busbar is aligned with one end of the third busbar.

[0011] The first magnetic core is located on the periphery of the stacked first busbar and the second busbar, the second magnetic core is located on the periphery of the stacked first busbar and the fourth busbar, and the third magnetic core is located on the periphery of the stacked third busbar and the fourth busbar.

[0012] Furthermore, the surfaces of the first busbar, the second busbar, the third busbar, and the fourth busbar are all provided with screw holes and screws.

[0013] Furthermore, the first busbar, the second busbar, the third busbar, and the fourth busbar are all L-shaped structures, wherein the short side of the L-shaped structure has a bent portion, and the long side of the L-shaped structure is a stacked portion.

[0014] Furthermore, an insulating layer is provided between the stacked portions of the second busbar and the third busbar.

[0015] Furthermore, the bent portions of the first busbar, the second busbar, the third busbar, and the fourth busbar all face the same side.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0017] With the protective components in place, the upper and lower clamps tightly contact the magnetic core, enabling rapid conduction of heat generated by the core to the heat-conducting layer. The heat-conducting layer then directs the heat from the core surface to the heat dissipation fins. Finally, the heat dissipation fins release the dissipated heat to the outside, thus improving the core's heat dissipation performance. Attached Figure Description

[0018] This utility model will be described by way of example and with reference to the accompanying drawings, wherein:

[0019] Figure 1 This is a top view of the flow-equalizing composite busbar structure provided by this utility model;

[0020] Figure 2 This is a structural schematic diagram of the protective component provided by this utility model;

[0021] Figure 3 This is a schematic diagram of the unfolded structure of the flow-equalizing composite busbar provided by this utility model;

[0022] Figure 4 This is a front view of the flow-equalizing composite busbar structure provided by this utility model.

[0023] First busbar-1; Second busbar-2; Third busbar-3; Fourth busbar-4; First magnetic core-5; Second magnetic core-6; Third magnetic core-7; Screw-8; Upper clamping plate-9; Lower clamping plate-10; Thermal conductive layer-11; Protective component-12; Heat dissipation fins-13. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] In existing technologies, high-frequency current equipment typically requires a magnetic core inside the busbar during operation. Under high-frequency conditions, the magnetic core absorbs and buffers high-frequency energy, suppressing high-frequency oscillations. This allows for a more stable current distribution across the parallel branches. However, because the magnetic core is constantly exposed to the harsh environment of high-frequency current, overheating is often unavoidable, posing a risk of equipment damage.

[0026] Example 1

[0027] Therefore, in order to solve the above problems and improve the heat dissipation speed of the magnetic core and prevent the magnetic core from overheating, this utility model discloses a flow-equalizing composite busbar structure, see reference. Figure 1 and Figure 2 The system includes a first magnetic core 5, a second magnetic core 6, and a third magnetic core 7. Specifically, each of the first magnetic core 5, the second magnetic core 6, and the third magnetic core 7 is provided with a protective member 12. The protective member 12 includes an upper clamping plate 9 and a lower clamping plate 10. The upper clamping plate 9 abuts against the top of any magnetic core, and the lower clamping plate 10 abuts against the bottom of any magnetic core. The two ends of the upper clamping plate 9 and the lower clamping plate 10 are connected by screws. The side of the upper clamping plate 9 and the lower clamping plate 10 that abuts against the magnetic core is provided with a heat-conducting layer 11 for conducting heat of the magnetic core. The side of the upper clamping plate 9 and the lower clamping plate 10 that does not abut against the magnetic core is provided with heat dissipation fins 13 for dissipating heat conducted by the heat-conducting layer 11.

[0028] In this embodiment, the heat dissipation performance of the magnetic core is improved by the protective element 12. In a specific implementation, the upper clamping plate 9 and the lower clamping plate 10 are in close contact with the magnetic core, enabling rapid conduction of the heat generated by the magnetic core to the heat-conducting layer 11. The heat-conducting layer 11 is made of a material with high thermal conductivity, such as silicone grease, whose excellent thermal conductivity ensures rapid and uniform heat distribution. Simultaneously, the heat dissipation fins 13 increase the contact area with air, accelerating the dissipation of heat to the surrounding environment.

[0029] In practical applications, when high-frequency current equipment is running, the heat generated by the magnetic core is conducted and dissipated through the protective component 12, which can reduce the temperature of the magnetic core and help reduce the risk of equipment damage due to overheating, thereby extending the service life of the equipment and improving the stability and reliability of the system.

[0030] It is worth mentioning that after the upper clamping plate 9 and the lower clamping plate 10 are fixed by screws, the upper clamping plate 9 and the lower clamping plate 10 will generate a squeezing force in the direction of the magnetic core, thereby achieving the clamping effect on the magnetic core. While improving the tightness of the contact between the heat-conducting layer 11 and the magnetic core, it can also play the role of fixing the magnetic core to prevent the magnetic core from shaking during use.

[0031] Preferably, the first magnetic core 5, the second magnetic core 6, and the third magnetic core 7 each include two spliced ​​UF-type magnetic cores or UU-type magnetic cores. This arrangement allows each magnetic core to be spliced ​​from two UF-type magnetic cores or UU-type magnetic cores. The positioning and installation between each magnetic core and the busbar can be achieved through insulating structural components, which is existing technology and will not be described in detail below.

[0032] Example 2

[0033] Based on Example 1, in order to further improve the stability of the magnetic core, refer to... Figure 2 The present invention also includes a groove adapted to the magnetic core. Specifically, the upper clamping plate 9 and the lower clamping plate 10 are provided with grooves on opposite sides. The grooves are adapted to the first magnetic core 5, the second magnetic core 6 and the third magnetic core 7. The heat-conducting layer 11 is disposed in the groove.

[0034] In this embodiment, the groove design makes the fit between the protective component 12 and the magnetic core more precise and stable.

[0035] For example, when the magnetic core is placed in the tank, its upper and lower ends are enclosed between the upper clamping plate 9 and the lower clamping plate 10. On the one hand, this further enhances the clamping effect of the upper clamping plate 9 and the lower clamping plate 10 on the magnetic core, preventing the magnetic core from shifting due to vibration or other external forces during equipment operation, ensuring that the magnetic core is always in a stable working state, thereby guaranteeing the continuous effectiveness of the magnetic core's absorption and buffering functions for high-frequency energy. On the other hand, since the heat-conducting layer 11 is located in the tank, it can more easily come into contact with the surface of the magnetic core. The user only needs to insert the magnetic core into the tank to make the heat-conducting layer 11 contact the magnetic core.

[0036] Furthermore, an adhesive layer is provided on the thermally conductive layer 11, which is used to bond the thermally conductive layer 11 to any magnetic core. The adhesive layer can be made of silicone-based adhesive to ensure good thermal conductivity between the thermally conductive layer 11 and the magnetic core. In addition, the presence of the adhesive layer effectively prevents the thermally conductive layer from detaching due to vibration during equipment operation, thereby ensuring the stability and reliability of the entire system.

[0037] Example 3

[0038] Based on either Example 1 or Example 2, refer to Figure 1 , Figure 3 and Figure 4 The present invention also includes a first busbar 1, a second busbar 2, a third busbar 3, and a fourth busbar 4. Specifically, the second busbar 2 is stacked on the first busbar 1, and one end of the second busbar 2 is aligned with one end of the first busbar 1. The third busbar 3 is partially stacked on the first busbar 1, and a predetermined distance is left between the third busbar 3 and the second busbar 2, the predetermined distance being greater than 0. The fourth busbar 4 is stacked on the third busbar 3 and part of the second busbar 2, and one end of the fourth busbar 4 is aligned with one end of the third busbar 3. The first magnetic core 5 is disposed around the stacked area of ​​the first busbar 10 and the second busbar 2, the second magnetic core 6 is disposed around the stacked area of ​​the first busbar 1 and the fourth busbar 4, and the third magnetic core 7 is disposed around the stacked area of ​​the third busbar 3 and the fourth busbar 4.

[0039] Specifically, the first busbar 1, the second busbar 2, the third busbar 3, and the fourth busbar 4 are all L-shaped structures. The short side of the L-shaped structure has a bent portion, and the long side of the L-shaped structure is a stacked portion. During the stacking process, the bent portions of the first busbar 1, the second busbar 2, the third busbar 3, and the fourth busbar 4 all face the same side.

[0040] This arrangement ensures that the first magnetic core 5 is occupied only by the stacking of the first busbar 1 and the second busbar 2, the second magnetic core 6 by the stacking of the first busbar 1 and the fourth busbar 4, and the third magnetic core 3 by the stacking of the third busbar 3 and the fourth busbar 4. Electrical isolation between different busbar layers can be ensured by an insulating layer, and electrical isolation between busbars in the same layer can be ensured by maintaining a sufficient predetermined distance, thereby improving the compactness of the components in this current-sharing composite busbar structure to a certain extent.

[0041] It is understandable that, due to the existence of the predetermined distance, there is a corresponding space between the first busbar 1 and the fourth busbar 4, so that the second magnetic core 6 can be connected only to the first busbar 1 and the second busbar 4.

[0042] It should be noted that the different layers of busbars include the space between the first busbar 1 and the second busbar 2, the space between the second busbar 2 and the fourth busbar 4, the space between the third busbar 3 and the fourth busbar 4, and the space between the first busbar 1 and the fourth busbar 4. An insulating layer is provided between the stacked portions of the second busbar 2 and the third busbar 3.

[0043] The same-layer busbar includes the area between the second busbar 2 and the third busbar 3.

[0044] In a specific implementation, the currents of the first busbar 1 and the second busbar 2 are correlated due to the coupling effect of the first magnetic core 5, the currents of the third busbar 3 and the fourth busbar 4 are correlated due to the coupling effect of the third magnetic core 7, and the currents of the first busbar 1 and the fourth busbar 4 are correlated due to the coupling effect of the second magnetic core 6. This indirectly correlates the currents of the second busbar 2 and the third busbar 3, further improving the balance of currents among the various busbars.

[0045] Furthermore, the surfaces of the first busbar 1, the second busbar 2, the third busbar 3, and the fourth busbar 4 are all provided with screw holes and screws 8. By providing screw holes on each busbar, it can be used to connect each parallel device or the branch where the parallel device is located; by providing screws on each busbar, it can be used to connect additional adapters to facilitate the installation and positioning of the entire current sharing composite busbar.

[0046] In summary, based on Embodiments 1 to 3, the working steps of this flow-equalizing composite busbar structure are as follows:

[0047] First, the first busbar 1, second busbar 2, third busbar 3, and fourth busbar 4 are assembled in a predetermined stacking order (i.e., second busbar 2 is stacked on top of first busbar 1, with one end of second busbar 2 aligned with one end of first busbar 1; third busbar 3 is partially stacked on top of first busbar 1, with a predetermined distance between third busbar 3 and second busbar 2; and fourth busbar 4 is stacked on top of third busbar 3 and part of second busbar 2, with one end of fourth busbar 4 aligned with one end of third busbar 3). Electrical isolation between the busbars is ensured through an insulating layer. Then, the first magnetic core 5, second magnetic core 6, and third magnetic core 7 are placed in the overlapping area of ​​the corresponding busbars.

[0048] Next, a protective element 12 is installed on the magnetic core, and the core is wrapped with grooves on the upper clamping plate 9 and the lower clamping plate 10, ensuring that the core is in close contact with the heat-conducting layer 11 inside the groove to achieve effective heat conduction. Then, the upper clamping plate 9 and the lower clamping plate 10 are fixed with screws to ensure that the core is firmly clamped, while also promoting close contact between the heat-conducting layer 11 and the core to improve heat dissipation efficiency.

[0049] Finally, the busbar is connected to external parallel devices or transition busbars through screw holes and screws 8 to complete the installation and positioning of the entire flow-equalizing composite busbar structure.

[0050] By following the steps above, the temperature control of the magnetic core can be improved during the operation of high-frequency current equipment, thereby enhancing the stability and reliability of the equipment and extending its service life.

[0051] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0052] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A current-equalizing composite busbar structure, comprising a first magnetic core (5), a second magnetic core (6), and a third magnetic core (7), characterized in that, The first magnetic core (5), the second magnetic core (6) and the third magnetic core (7) are all provided with protective components (12). The protective components (12) include an upper clamping plate (9) and a lower clamping plate (10). The upper clamping plate (9) abuts against the top of any magnetic core, and the lower clamping plate (10) abuts against the bottom of any magnetic core. The two ends of the upper clamping plate (9) and the lower clamping plate (10) are connected by screws. The upper clamping plate (9) and the lower clamping plate (10) are provided with a heat-conducting layer (11) on the side that is in contact with the magnetic core, and heat dissipation fins (13) are provided on the side that is not in contact with the magnetic core. The heat dissipation fins (13) are used to dissipate the heat conducted by the heat-conducting layer (11).

2. The flow-equalizing composite busbar structure according to claim 1, characterized in that, The upper clamping plate (9) and the lower clamping plate (10) are provided with grooves on their opposite sides. The grooves are adapted to the first magnetic core (5), the second magnetic core (6) and the third magnetic core (7). The heat-conducting layer (11) is provided in the groove.

3. The flow-equalizing composite busbar structure according to claim 2, characterized in that, An adhesive layer is provided on the thermally conductive layer (11), which is used to bond the thermally conductive layer (11) to any magnetic core.

4. The flow-equalizing composite busbar structure according to claim 1, characterized in that, Also includes: The first busbar (1), the second busbar (2), the third busbar (3), and the fourth busbar (4) are stacked on the first busbar (1) and one end of the second busbar (2) is aligned with one end of the first busbar (1). The third busbar (3) is partially stacked on the first busbar (1) and there is a predetermined distance between the third busbar (3) and the second busbar (2) and the predetermined distance is greater than 0. The fourth busbar (4) is stacked on the third busbar (3) and part of the second busbar (2) and one end of the fourth busbar (4) is aligned with one end of the third busbar (3). The first magnetic core (5) is located on the periphery of the stacked area of ​​the first busbar (1) and the second busbar (2), the second magnetic core (6) is located on the periphery of the first busbar (1) and the fourth busbar (4), and the third magnetic core (7) is located on the periphery of the stacked area of ​​the third busbar (3) and the fourth busbar (4).

5. The flow-equalizing composite busbar structure according to claim 4, characterized in that, The surfaces of the first busbar (1), the second busbar (2), the third busbar (3) and the fourth busbar (4) are provided with screw holes and screws (8).

6. The flow-equalizing composite busbar structure according to claim 4, characterized in that, The first busbar (1), the second busbar (2), the third busbar (3) and the fourth busbar (4) are all L-shaped structures, wherein the short side of the L-shaped structure has a bent part and the long side of the L-shaped structure is a stacked part.

7. The flow-equalizing composite busbar structure according to claim 6, characterized in that, An insulating layer is provided between the stacked portions of the second busbar (2) and the third busbar (3).

8. The flow-equalizing composite busbar structure according to claim 6, characterized in that, The bent portions of the first busbar (1), the second busbar (2), the third busbar (3), and the fourth busbar (4) all face the same side.

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