Connecting structure of copper bus bars and power amplifier cabinet

Abstract

The utility model relates to the technical field of electrical connection, and discloses a connection structure of bus copper bars and a power amplifier cabinet, and the connection structure comprises two bus copper bars, and any one of the two bus copper bars is bent by a target angle from the plate surface of the bus copper bar to the direction far away from the plate surface to form a projection; and the output connection ends of the two bus copper bars are bent by a target distance in the direction away from each other, so that the output connection ends of the two bus copper bars are away from each other. According to the utility model, the bus conductors are changed into the bus copper bars, and the projection is formed on the plate surface of one of the bus copper bars, so that a vibration system can stably operate in a special vibration experiment environment, the transmission efficiency in an electric energy bus process is improved, and the heat dissipation area of the bus copper bars can be increased; the output connection ends of the two copper busbars are bent by the target distance in the direction away from each other, so that the arc discharge phenomenon between the two copper busbars can be prevented, and the safety of the vibration system is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electrical connection, concretely relates to a connecting structure of copper busbar and power amplifier cabinet. BACKGROUND

[0002] With the continuous development of China's aerospace field, the demand for thrust of vibration test equipment continues to grow, and the output power of the power amplifier has higher requirements. However, the current output current of the power amplifier cabinet is greatly lost in the transmission process to the bus of the vibration table, which affects the transmission efficiency of electric energy.

[0003] The mainstream bus connection method in the current vibration system is to connect the output current to the lower end of the cabinet through a wire, and then output the current to the vibration table through a wire. However, this bus output method greatly reduces the transmission efficiency of electric energy, and the mechanical strength of this bus method often cannot meet the requirements in some special vibration test environments, and the electric energy transmission efficiency is low. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model provides a connecting structure of copper busbar and power amplifier cabinet to solve the technical problems of low electric energy transmission efficiency and poor stability of the vibration system.

[0005] In a first aspect, the utility model provides a connecting structure of copper busbar, comprising:

[0006] Two copper busbars, any one of the two copper busbars is bent by a target angle in a direction away from the surface of the copper busbar to form a protrusion;

[0007] The output connection ends of the two copper busbars are bent by a target distance in a direction away from each other, so that the output connection ends of the two copper busbars are away from each other.

[0008] Advantages: by changing the bus wire to copper busbar, and bending the surface of one of the two copper busbars by a target angle in a direction away from the surface to form a protrusion, the mechanical strength and stability of the vibration system are enhanced, the vibration system can be stably operated in a special vibration test environment, the transmission efficiency during the electric energy bus process can be improved, the heat dissipation area of the copper busbar can be increased by forming a protrusion on the surface of the copper busbar, and the heat dissipation performance of the copper busbar can be improved. By bending the output connection ends of the two copper busbars by a target distance in a direction away from each other, the output connection ends of the two copper busbars are away from each other, which can prevent the occurrence of arc phenomenon between the two copper busbars, and improve the safety of the vibration system.

[0009] In an optional embodiment, the height of the protrusion is 40-50mm, and the target angle is 40-50 degrees.

[0010] Beneficial effect: By setting the appropriate height of the convex and the target angle, the bent busbar is installed on the vibration system, which is convenient for clamping the detection equipment on the busbar during testing, improves the testing convenience, and increases the heat dissipation area of the busbar, effectively improves the heat dissipation performance of the busbar.

[0011] In an alternative embodiment, the target distance is 25-30 cm.

[0012] Beneficial effect: By setting the appropriate target distance, the arc phenomenon between the output connection ends of the two busbars can be prevented, effectively reducing the risk of accidental short circuit between the two output connection ends; and sufficient operation space can be provided for subsequent electrical equipment installation, line connection and maintenance work, facilitating the operation of the workers.

[0013] In an alternative embodiment, the minimum cross-sectional area of the busbar is calculated according to a preset formula.

[0014] Beneficial effect: Since the maximum output current of each power amplifier cabinet is constant, the minimum cross-sectional area of the busbar is calculated by using the preset formula to select a busbar that meets the power amplifier cabinet load flow, ensuring that the busbar has good heat dissipation performance while efficiently transmitting electrical energy.

[0015] In an alternative embodiment, the preset formula is:

[0016] Wherein A is the minimum cross-sectional area of the busbar; I is the maximum output current; R is the resistance of the busbar; Kt is the comprehensive heat dissipation coefficient of the busbar surface; and ΔT is the temperature rise of the busbar.

[0017] In an alternative embodiment, the plate thickness of the busbar is 5-10 mm.

[0018] Beneficial effect: By selecting a busbar with an appropriate plate thickness, the maximum load flow of the power amplifier cabinet is met, and the busbar is conveniently installed in the power amplifier cabinet.

[0019] In an alternative embodiment, an insulating member is further included, which is wrapped around the outer periphery of the busbar.

[0020] Beneficial effect: By wrapping an insulating member around the outer periphery of the busbar, arc can be prevented when the load flow of the two busbars is too large, thereby preventing the power amplifier cabinet from short-circuiting. Good insulation can ensure stable current flow in the busbar, maintain normal operation of the vibration system, and improve the stability and reliability of the vibration system.

[0021] In a second aspect, the utility model also provides a power amplifier cabinet, comprising:

[0022] The power amplifier cabinet body;

[0023] A plurality of power modules are sequentially and vertically arranged in the power amplifier cabinet body;

[0024] The busbar connection structure as described above is installed on the plurality of power modules;

[0025] A transformer is installed in the power amplifier cabinet body, and the transformer is electrically connected with the output connection end of the busbar.

[0026] Beneficial effects: Because the power amplifier cabinet includes the busbar connection structure, it has the same effects as the busbar connection structure, which will not be described here.

[0027] In an alternative embodiment, the power module includes a positive terminal and a negative terminal, and the two busbars are electrically connected with the positive terminal and the negative terminal of the power module, respectively.

[0028] Beneficial effects: By connecting one busbar with the positive terminal of the power module and the other busbar with the negative terminal of the power module, the current flow between the power module and the external circuit is realized, which facilitates the smooth transmission of current between the busbar and the power module.

[0029] In an alternative embodiment, the installation distance between the two busbars is 8-12mm.

[0030] Beneficial effects: By setting a suitable installation distance between the two busbars, the arc generated when the load current of the two busbars is too large can be further prevented, thereby preventing the short circuit of the power amplifier cabinet.

[0031] The above description is only a summary of the technical scheme of the embodiments of the present application, in order to more clearly understand the technical means of the embodiments of the present application, the embodiments of the present application can be implemented according to the content of the specification, and in order to make the above and other purposes, features and advantages of the embodiments of the present application more obvious and easy to understand, the specific embodiments of the present application are described below. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the specific embodiments of the present application or the technical scheme in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creating any creative labor.

[0033] Figure 1is a structure schematic view of the power amplifier cabinet provided by the embodiment of the utility model;

[0034] Figure 2 is a structure schematic view of the power module and the bus copper bar cooperation in the power amplifier cabinet provided by the embodiment of the utility model.

[0035] Reference signs:

[0036] 10, power amplifier cabinet main body;100, bus copper bar;110, first bus copper bar;111, first output connection end;120, second bus copper bar;121, second output connection end;122, bending section;123, first connecting plate surface;124, second connecting plate surface;130, connecting hole;200, power module;300, transformer. Specific implementation

[0037] In order to make the purpose, technical scheme and advantage of the embodiment of the utility model more clear, the technical scheme in the embodiment of the utility model will be clearly and completely described below in combination with the drawings in the embodiment of the utility model, obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without creative labor are within the protection scope of the utility model.

[0038] As Figure 1 And Figure 2 The embodiment of the utility model provides a kind of connection structure of bus copper bar, comprising: two bus copper bars 100, the plate surface of anyone in two bus copper bars 100 is bent target angle in the direction away from plate surface and forms protrusion;The output connection end of two bus copper bars 100 is bent target distance in the direction away from each other, so that the output connection end of two bus copper bars 100 is far away from each other.

[0039] In the embodiment, provide two bus copper bars 100, the plate surface of one of two bus copper bars 100 is bent target angle in the direction away from plate surface and forms protrusion;By changing bus wire into bus copper bar 100, and protrusion is formed on the plate surface of bus copper bar 100, the mechanical strength and stability of vibration system are enhanced, can make vibration system stable operation in special vibration experimental environment;It can also improve transmission efficiency in the process of electric energy bus, and the protrusion formed on the plate surface of bus copper bar 100 can also increase the heat dissipation area of bus copper bar 100, improve the heat dissipation performance of bus copper bar 100.The output connection end of two bus copper bars 100 is bent target distance in the direction away from each other, so that the output connection end of two bus copper bars 100 is far away from each other, can prevent the arc phenomenon between two bus copper bars 100, improve the safety of vibration system.

[0040] In one of the embodiments, the busbar 100 includes a first busbar 110 and a second busbar 120. After the second busbar 120 is bent at a target angle from the plate surface of the second busbar 120 to the direction away from the plate surface, the second busbar 120 includes a bent segment 122, a first connecting plate surface 123, and a second connecting plate surface 124; the first connecting plate surface 123, the bent segment 122, and the second connecting plate surface 124 are sequentially connected to form a protrusion. The height of the protrusion is the distance from the end surface of the first connecting plate surface 123 away from one end of the power module 200 to the end surface of the second connecting plate surface 124 close to one end of the power module 200. The target angle is the included angle between the bent segment 122 and the first connecting plate surface 123 or the second connecting plate surface 124. In other realizable manners, the first busbar 110 can be bent; whether the first busbar 110 or the second busbar 120 is bent can be set according to actual use requirements, and is not specifically limited.

[0041] Further, the height of the protrusion is 40-50 mm; and the target angle is 40-50 degrees.

[0042] In the embodiment, the height of the protrusion can be specifically 40 mm, 45 mm, 50 mm, etc.; and the target angle can be specifically 40 degrees, 45 degrees, 50 degrees, etc.; and how to set the height of the protrusion and the target angle is not specifically limited, and can be selected according to actual use requirements. By setting appropriate protrusion height and target angle, after the bent busbar 100 is installed on the vibration system, it is convenient to clamp the detection equipment on the busbar 100 during testing, improves the testing convenience, and increases the heat dissipation area of the busbar 100, effectively improves the heat dissipation performance of the busbar 100.

[0043] In one of the embodiments, the first busbar 110 includes a first output connecting end 111; the second busbar 120 includes a second output connecting end 121; and the first output connecting end 111 and the second output connecting end 121 are bent at a target distance away from each other. Further, the target distance is 25-30 cm.

[0044] In the embodiment, the target distance can be specifically 25 cm, 27 cm, 30 cm, etc.; and how to set the target distance between the first output connecting end 111 and the second output connecting end 121 is not specifically limited, and can be selected according to actual use requirements. By setting an appropriate target distance, the risk of arc phenomenon between the output connecting ends of the two busbars 100 can be effectively reduced; and enough operation space can be provided for subsequent current sensor installation, line connection, and maintenance work, facilitating the operation of the workers.

[0045] In other embodiments, a plurality of connecting holes 130 are further arranged on the first output connecting end 111 and the second output connecting end 121. The connecting holes 130 facilitate mounting other electronic devices on the busbar 100 and electrically connecting the other electronic devices with the busbar 100.

[0046] In one of the embodiments, the minimum cross-sectional area of the busbar 100 is calculated according to a preset formula. Further, the preset formula is as follows:

[0047] In the formula, A is the minimum cross-sectional area of the busbar, I is the maximum output current, R is the resistance of the busbar, Kt is the comprehensive heat dissipation coefficient of the surface of the busbar, and ΔT is the temperature rise of the busbar.

[0048] In the embodiment, the maximum output current of each power amplifier cabinet is constant, the resistance of the busbar 100 and the comprehensive heat dissipation coefficient of the surface of the busbar 100 can be obtained according to the specifications of the busbar 100, and the temperature rise of the busbar 100 can be obtained according to test data. The minimum cross-sectional area of the busbar 100 is calculated by the preset formula to select a busbar 100 that meets the load flow of the power amplifier cabinet, so as to ensure that the busbar 100 has good heat dissipation performance while efficiently transmitting electric energy.

[0049] In one of the embodiments, the thickness of the surface of the busbar 100 is 5-10 mm.

[0050] In the embodiment, the thickness of the surface of the busbar 100 can be 5 mm, 8 mm, 10 mm, etc. The thickness of the surface of the busbar 100 can be selected according to the use requirements, and is not limited in particular. The busbar 100 with a suitable thickness of the surface is selected to meet the maximum load flow of the power amplifier cabinet and facilitate mounting the busbar 100 in the power amplifier cabinet.

[0051] In one of the embodiments, an insulating member is further arranged to cover the outer periphery of the busbar 100.

[0052] In the embodiment, the insulating member can be an insulating thermoplastic tube. The insulating thermoplastic tube covering the outer periphery of the busbar 100 can prevent electric arc from being generated when the load flow of the busbar 100 is too large, so as to prevent short circuit of the power amplifier cabinet. Good insulation can ensure stable flow of the current in the busbar 100, maintain normal operation of the vibration system, and improve the stability and reliability of the vibration system.

[0053] In a second aspect, as Figure 1As shown, the utility model further provides a power amplifier cabinet, include: power amplifier cabinet main part 10, a plurality of power module 200, in power amplifier cabinet main part 10 inside are arranged in sequence and are stacked, the connecting structure of busbar 100, install on a plurality of power module 200, transformer 300, install in power amplifier cabinet main part 10, and transformer 300 is connected with the output connection end of busbar 100 electricity.

[0054] In this embodiment, a plurality of power modules 200 are arranged in sequence and stacked in the power amplifier cabinet main body 10, and the busbars 100 are installed on the plurality of power modules 200, so that the busbars 100 are electrically connected with the plurality of power modules 200. The output connection end of the busbar 100 is electrically connected with the transformer 300 arranged in the power amplifier cabinet main body 10, thereby realizing the circulation of current between the power module 200 and the external circuit. Because the power amplifier cabinet includes the connecting structure of the busbar 100, it has the same effect as the connecting structure of the busbar 100, which will not be described here.

[0055] In one embodiment, the power module 200 includes a positive terminal and a negative terminal, and the two busbars 100 are electrically connected with the positive terminal and the negative terminal of the power module 200 respectively.

[0056] In this embodiment, the positive terminals of the plurality of power modules 200 are connected in sequence from top to bottom on the first busbar 110, and the negative terminals of the plurality of power modules 200 are connected in sequence from top to bottom on the second busbar 120. The first busbar 110 and the second busbar 120 can be fixedly connected to the power module 200 by means of bolt connection, welding or the like, so that the current can be smoothly transmitted between the busbar 100 and the power module 200.

[0057] In one embodiment, the installation distance between the two busbars 100 is 8mm-12mm.

[0058] In this embodiment, the installation distance between the first busbar 110 and the second busbar 120 can be 8mm, 10mm, 12mm or the like. The specific installation distance between the two busbars 100 is not limited and can be selected according to actual use requirements. By setting a suitable installation distance between the two busbars 100, the arc generated when the carrying capacity of the two busbars 100 is too large can be further prevented, thereby preventing the short circuit of the power amplifier cabinet.

[0059] Although the embodiments of the utility model have been described in conjunction with the drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the utility model, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A connecting structure of busbars, characterized by comprising: The application relates to a connecting structure of a copper busbar. Two copper busbars (100), any one of the two copper busbars (100) is bent by a target angle from the plate surface of the copper busbar (100) to the direction away from the plate surface to form a protrusion; The output connection ends of the two copper busbars (100) are bent by a target distance away from each other, so that the output connection ends of the two copper busbars (100) are away from each other.

2. The connecting structure of busbars according to claim 1, wherein The height of the protrusion is 40-50 mm, and the target angle is 40-50 degrees.

3. The connecting structure of busbars according to claim 1, wherein The target distance is 25-30 cm.

4. The connecting structure of busbars according to claim 1, wherein The minimum cross-sectional area of the copper busbar (100) is calculated according to a preset formula.

5. The connecting structure of busbars according to claim 4, wherein The preset formula is: Wherein, A is the minimum cross-sectional area of the copper busbar; I is the maximum output current; R is the resistance of the copper busbar; Kt is the comprehensive heat dissipation coefficient of the surface of the copper busbar; and Delta T is the temperature rise of the copper busbar.

6. The connecting structure of busbars according to claim 1, wherein The plate surface thickness of the copper busbar (100) is 5-10 mm.

7. The connecting structure of busbars according to claim 1, wherein Further comprising an insulating part wrapped on the outer circumferential side of the copper busbar (100).

8. A power amplifier cabinet, characterized by The application relates to a connecting structure of a copper busbar. A power amplifier cabinet main body (10); A plurality of power modules (200) are sequentially and layerwisely arranged in the power amplifier cabinet main body (10); The connecting structure of the copper busbar according to any one of claims 1 to 7 is installed on the plurality of power modules (200); A transformer (300) is installed in the power amplifier cabinet main body (10), and the transformer (300) is electrically connected with the output connection end of the copper busbar (100).

9. The power amplifier cabinet of claim 8, wherein, The power module (200) comprises a positive electrode end and a negative electrode end, and the two copper busbars (100) are electrically connected with the positive electrode end and the negative electrode end of the power module (200) respectively.

10. The power amplifier cabinet of claim 8, wherein, The installation distance between the two copper busbars (100) is 8-12 mm.

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