Split-type copper bar conducting high-frequency large current

Abstract

The utility model relates to a split-type copper bar for conducting high-frequency heavy current, which comprises two or more copper bars, the resistance values of the copper bars are the same, a support column for fixing the distance between two adjacent copper bars is arranged between the two adjacent copper bars, and an aluminum plate for high-frequency shielding is arranged at the periphery of the copper bars close to magnetic conductive metal. According to the utility model, the split-type copper bars can greatly save copper materials and further reduce the cost; the temperature rise of the copper bar is reduced to improve the safety, the temperature rise of the copper bar does not exceed 80 K, and the temperature does not exceed 130 DEG C; the structural strength is high; the split type copper bar has a relatively low space scattering magnetic field and eddy current loss, and further, a high-frequency shielding antimagnetic aluminum plate is arranged, so that penetration of a high-frequency magnetic field can be shielded, and the high-frequency magnetic field on the copper bar is prevented from overflowing to generate high-frequency induction heating on peripheral magnetic conductive metal.

Description

Technical Field

[0001] The utility model relates to a split copper busbar for conducting high-frequency large current, and relates to the field of high-frequency electrical equipment. Background Art

[0002] The long-distance conduction of high-frequency and large currents above 4000Hz is a thorny problem. There is a serious high-frequency skin effect, and the effective cross-sectional area of ​​the conductor will be greatly reduced, resulting in serious heating of the conductor. On the other hand, high-frequency and large currents will cause serious high-frequency induction heating to the surrounding magnetic metal materials, and how to shield them in engineering applications is not clear.

[0003] Based on this, this case proposes a split copper busbar that conducts high-frequency and large current to solve the above technical problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a split copper busbar for conducting high-frequency and large currents, comprising two or more copper busbars, the resistance values ​​of the copper busbars are the same, a support column for fixing the distance between the two adjacent copper busbars is arranged between the two adjacent copper busbars, and an aluminum plate for high-frequency shielding is arranged on the periphery of the copper busbar near the magnetic conductive metal.

[0006] Preferably, the number of the copper bars is three.

[0007] Preferably, the copper busbars are made of red copper with a conductivity of more than 99.99%, and the surfaces of the copper busbars are plated with a tin layer.

[0008] Preferably, temperature test papers are pasted on the surface of the copper busbars to observe the maximum temperature of the copper busbars during operation.

[0009] Preferably, the support columns are all insulating support sleeves, the copper busbars are all provided with a plurality of mounting through holes, insulating screws are passed through the corresponding mounting through holes between the copper busbars, the support sleeves are all sleeved on the outer periphery of the screws of two adjacent copper busbars, and both outer ends of the screws are threaded with insulating locking nuts.

[0010] Preferably, the copper busbar is connected to a plurality of insulating columns on the side near the peripheral mounting frame, the internal threaded hole at one end of the insulating column is screwed to the external thread exposed at the outer end of the screw rod, and the internal threaded hole at the other end is used for screwing to the peripheral mounting frame.

[0011] Preferably, the thickness of the copper busbar is between 1 and 3 mm.

[0012] Preferably, the length of the support columns is between 20 and 40 mm.

[0013] Preferably, the total lengths of the copper bars are all the same.

[0014] Preferably, the thickness of the aluminum plate is between 1 and 2 mm.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the copper busbar conducts a large-value high-frequency current, the current magnitude is between 800 and 1000A, and the frequency is between 4000 and 10000Hz. In order to overcome the serious heating of the copper busbar caused by the high-frequency skin effect, the single copper busbar is replaced with two or more split copper busbars, which jointly conduct the large-value high-frequency current, reduce the temperature rise of the copper busbar to improve safety, and have high structural strength; the split copper busbar itself has a relatively low spatial scattering magnetic field and eddy current loss. Furthermore, a high-frequency shielding anti-magnetic aluminum plate is provided to shield the penetration of the high-frequency magnetic field and prevent the high-frequency magnetic field on the copper busbar from overflowing and causing high-frequency induction heating to the peripheral magnetic conductive metal.

[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0019] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0020] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0021] like Figure 1As shown, this embodiment provides a split copper busbar for conducting high-frequency and large currents, including two or more copper busbars 1, the resistance values ​​of the copper busbars are the same, ensuring that the current value on each copper busbar is the same, and a support column 2 for fixing the distance between the copper busbars is arranged between two adjacent copper busbars, and an aluminum plate 4 for high-frequency shielding is arranged near the magnetic conductive metal 3 on the periphery of the copper busbar to prevent the high-frequency magnetic field on the copper busbar from generating high-frequency induction heating on the peripheral magnetic conductive metal.

[0022] The copper busbar conducts a large high-frequency current, with a current of 800 to 1000A and a frequency of 4000 to 10000Hz. In order to overcome the severe heating of the copper busbar caused by the high-frequency skin effect, the single copper busbar is replaced with two or more split copper busbars to jointly conduct the large high-frequency current.

[0023] In the embodiment of the utility model, the number of the copper bars is three. Multiple split copper bars can significantly reduce the scattered interference magnetic field and eddy current heating around the copper bars.

[0024] In the embodiments of the present invention, the copper busbars are made of red copper with a conductivity of more than 99.99%, and the surfaces of the copper busbars are plated with a tin layer.

[0025] In the embodiment of the utility model, temperature test paper 5 is pasted on the surface of the copper busbar to observe the maximum temperature of the copper busbar during operation.

[0026] In the embodiments of the utility model, the support columns are all insulating support sleeves, the copper busbars are all provided with a plurality of mounting through holes, the corresponding mounting through holes between the copper busbars are all penetrated with insulating screws 6, the support sleeves are all sleeved on the outer periphery of the screws of two adjacent copper busbars, and the two outer ends of the screws are both threaded with insulating locking nuts 7.

[0027] In the embodiment of the utility model, the copper busbar is connected to a plurality of insulating columns 8 on the side near the peripheral mounting frame. The internal threaded hole at one end of the insulating column is screwed to the external thread exposed at the outer end of the screw rod, and the internal threaded hole at the other end is used to screw to the peripheral mounting frame to fix the split copper busbar.

[0028] In the embodiment of the utility model, the thickness of the copper busbar is between 1 and 3 mm.

[0029] In the embodiment of the utility model, the length of the support column is between 20 and 40 mm. This distance can effectively isolate the high-frequency current repulsion effect between the two copper bars and ensure the effective remaining cross-sectional area.

[0030] In the embodiment of the utility model, the total lengths of the copper bars are the same.

[0031] In the embodiment of the utility model, the thickness of the aluminum plate is between 1 and 2 mm. The aluminum plate is a diamagnetic material and can shield the high-frequency magnetic field to prevent the high-frequency magnetic field on the copper bus from overflowing and causing high-frequency induction heating to the peripheral magnetic conductive metal.

[0032] In the embodiment of the utility model, the split copper busbar has outstanding advantages in the performance of conducting high-frequency and large currents, can greatly reduce the cross-sectional area and weight of copper materials, reduce temperature rise, and solve the problem of long-distance transmission of high-frequency and large currents. At the same time, since high-frequency and large currents can easily cause serious electromagnetic induction heating to surrounding magnetic conductive metals, such as carbon steel, the present invention uses an aluminum plate made of high-frequency antimagnetic material as a shielding layer, which can effectively block the high-frequency magnetic field and has a good application effect. Furthermore, a temperature test paper is set on the split copper busbar to monitor the maximum operating temperature. The maximum temperature displayed by the temperature test paper is 260°C; the split copper busbar is locked and fixed to the peripheral mounting frame by an insulating column. Multiple split copper busbars can effectively increase the effective cross-sectional area of ​​the conductor under high-frequency current, and the thickness of the copper busbar is also very critical.

[0033] The split copper busbar in the utility model can greatly save copper materials and thus reduce costs; reduce the temperature rise of the copper busbar to improve safety, the temperature rise of the copper busbar does not exceed 80K, and the temperature does not exceed 130°C; the structural strength is high; the split copper busbar itself has a relatively low spatial scattering magnetic field and eddy current loss, and further, a high-frequency shielding anti-magnetic aluminum plate is provided to shield the penetration of the high-frequency magnetic field, and prevent the high-frequency magnetic field on the copper busbar from overflowing and causing high-frequency induction heating to the peripheral magnetic conductive metal.

[0034] The above is only the preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model.

Claims

1. A split copper busbar for conducting high-frequency and high-current, characterized in that: It comprises two or more copper bars, the resistance values ​​of the copper bars are the same, a support column for fixing the distance between the two adjacent copper bars is arranged between the two adjacent copper bars, and an aluminum plate for high-frequency shielding is arranged on the periphery of the copper bar near the magnetic conductive metal.

2. The split copper busbar for conducting high frequency and large current according to claim 1 is characterized in that: The number of the copper bars is three.

3. The split copper busbar for conducting high frequency and large current according to claim 1 is characterized in that: The copper busbars are made of red copper with a conductivity of more than 99.99%, and the surfaces of the copper busbars are plated with a tin layer.

4. The split copper busbar for conducting high frequency and large current according to claim 1 is characterized in that: Temperature test papers are pasted on the surface of the copper busbars to observe the maximum temperature of the copper busbars during operation.

5. The split copper busbar for conducting high frequency and large current according to claim 1 is characterized in that: The support columns are all insulating support sleeves, and the copper bars are all provided with a plurality of mounting through holes. Insulating screws are passed through the corresponding mounting through holes between the copper bars. The support sleeves are all sleeved on the outer periphery of the screws of two adjacent copper bars, and both outer ends of the screws are threaded with insulating locking nuts.

6. The split copper busbar for conducting high frequency and large current according to claim 5 is characterized in that: The copper busbar is connected to a plurality of insulating columns on the side near the peripheral mounting frame. The internal threaded hole at one end of the insulating column is screwed to the external thread exposed at the outer end of the screw rod, and the internal threaded hole at the other end is used for screwing to the peripheral mounting frame.

7. The split copper busbar for conducting high frequency and large current according to claim 1 is characterized in that: The thickness of the copper busbar is between 1 and 3 mm.

8. The split copper busbar for conducting high frequency and large current according to claim 1 is characterized in that: The length of the support columns is between 20 and 40 mm.

9. The split copper busbar for conducting high frequency and large current according to claim 1, characterized in that: The total lengths of the copper bars are all the same.

10. The split copper busbar for conducting high frequency and large current according to claim 1, characterized in that: The thickness of the aluminum plate is between 1 and 2 mm.

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