Low-impedance low-inductance flexible laminated copper bus

Abstract

The utility model relates to the technical field of laminated copper buses, and discloses a low-impedance low-inductance flexible laminated copper bus, which comprises a protective sleeve, four copper sheets are arranged in the protective sleeve, the four copper sheets are wrapped by insulating layers, every two of the four copper sheets form a group, the two groups of copper sheets are symmetrically arranged up and down, and a compression structure is arranged on the outer wall surface of the protective sleeve. The pressing structure is arranged, the bolt is screwed, the fixed roller and the movable roller clamp the protective sleeve and the two sets of copper sheets in the protective sleeve so that the protective sleeve and the two sets of copper sheets can be tightly attached, when the clamping position needs to be adjusted, the installation frame is moved, the fixed roller and the movable roller roll on the top face and the bottom face of the protective sleeve, and the clamping position is adjusted. The current directions of the two groups of copper sheets are opposite, and opposite magnetic fields can be generated by reverse current paths, so that inductance is partially counteracted, in this way, the worker can conveniently adjust the clamping positions of the copper sheets, and the use effect of the bus is improved.

Description

Technical Field

[0001] This utility model relates to the field of laminated copper busbar technology, and in particular to a low-impedance, low-inductance flexible laminated copper busbar. Background Technology

[0002] Multilayer copper busbars are electrical conductor assemblies composed of multiple layers of copper conductors. They are mainly used for the transmission and distribution of large currents and are particularly suitable for high-frequency and high-power applications. Multilayer copper busbars have a certain degree of flexibility to adapt to different applications. This type of busbar is widely used in power electronic equipment, electric vehicles, photovoltaics, and wind power because it can support high current transmission and reduce electromagnetic interference.

[0003] The existing multilayer low-inductance insulated transmission busbar structure (publication number: CN207819393U) has at least the following drawbacks: Although the above device uses screws and washers to lock the washers, thereby making the washers fit tightly to reduce the stray inductance of the line, it is inconvenient for workers to adjust the installation position after using screws and washers to lock. When it is necessary to adjust the locking position, workers need to loosen and reinstall the screws, which is cumbersome and reduces the busbar's performance. Therefore, we propose this utility model. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a low-impedance, low-inductance flexible laminated copper busbar.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A low-impedance, low-inductance flexible laminated copper busbar includes a protective sleeve. The protective sleeve contains four copper sheets, each wrapped with an insulating layer. The four copper sheets are arranged in pairs, with the two pairs arranged symmetrically. The outer wall of the protective sleeve is provided with a pressing structure. The pressing structure includes several mounting frames located below the protective sleeve. Fixed rollers and movable rollers are rotatably arranged inside the mounting frames, and the protective sleeve is located between the fixed rollers and the movable rollers.

[0007] As a further embodiment of this utility model, both the fixed roller and the movable roller are rotatably provided with connecting rods inside. The connecting rod located above is fixed to both sides of the inner wall of the mounting frame. Sliding grooves are provided on both sides of the inner wall of the mounting frame. The two ends of the connecting rod located below are slidably disposed with the inner walls of the two sliding grooves respectively. The two connecting rods are fixed together by two bolts.

[0008] As a further embodiment of this utility model, two fixing plates are fixed on both sides of the mounting bracket, the top surface of the fixing plate is provided with a fixing hole, and the bottom surface of the fixing plate is fixed with a magnetic ring.

[0009] As a further embodiment of this utility model, a plurality of heat dissipation grooves are provided on the side of the two middle insulating layers that are close to each other. The plurality of heat dissipation grooves are evenly distributed along the length of the insulating layer. The upper and lower sets of heat dissipation grooves are positioned correspondingly. Flow holes are provided on both sides of the protective sleeve, and the flow holes are connected to the heat dissipation grooves.

[0010] As a further embodiment of this utility model, the inner wall surface of the protective sleeve is provided with a plurality of annular grooves, which are evenly distributed along the length of the protective sleeve, and all of the annular grooves are connected to the flow hole.

[0011] As a further embodiment of this utility model, the copper sheet has an insulating layer extending from both ends, and connection holes are provided at both ends of the copper sheet.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This laminated copper busbar, through the setting of the clamping structure, tightens the bolts to make the fixed roller and the movable roller clamp the protective sleeve and the two sets of copper sheets inside, so that they fit tightly. When it is necessary to adjust the clamping position, the mounting bracket is moved, and the fixed roller and the movable roller roll on the top and bottom surfaces of the protective sleeve, which makes it easy for the staff to adjust the clamping position. The current direction of the two sets of copper sheets is opposite, and the opposite current path will generate opposite magnetic fields, thus partially canceling the inductance. In this way, it is easy for the staff to adjust the clamping position of the copper sheets, improving the busbar's performance and ensuring low impedance, low inductance and high reliability. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a low-impedance, low-inductance flexible laminated copper busbar proposed in this utility model.

[0015] Figure 2 This is a schematic diagram of the disassembled structure of a low-impedance, low-inductance flexible laminated copper busbar proposed in this utility model.

[0016] Figure 3 This is a schematic diagram of the disassembled structure of the protective sleeve of a low-impedance, low-inductance flexible laminated copper busbar proposed in this utility model.

[0017] Figure 4 This is a schematic diagram of the disassembled structure of the mounting frame for a low-impedance, low-inductance flexible laminated copper busbar proposed in this utility model.

[0018] Figure 5 This utility model proposes a low-impedance, low-inductance flexible multilayer copper busbar. Figure 3 Enlarged structural diagram at point A in the middle.

[0019] In the diagram: 1. Protective sleeve; 2. Copper sheet; 201. Mounting bracket; 202. Fixed roller; 203. Movable roller; 204. Connecting rod; 205. Slide groove; 3. Insulation layer; 301. Fixing hole; 302. Magnetic ring; 303. Fixing piece; 4. Heat dissipation groove; 401. Flow hole; 5. Circulating groove; 6. Connecting hole. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] like Figure 1-Figure 5 As shown, a low-impedance, low-inductance flexible laminated copper busbar includes a protective sleeve 1. The protective sleeve 1 contains four copper sheets 2, each wrapped with an insulating layer 3. The four copper sheets 2 are arranged in pairs, with the two pairs of copper sheets 2 arranged symmetrically vertically. The outer wall of the protective sleeve 1 is provided with a pressing structure. The pressing structure includes several mounting brackets 201 located below the protective sleeve 1. A fixed roller 202 and a movable roller 203 are rotatably arranged inside the mounting brackets 201. The protective sleeve 1 is located between the fixed roller 202 and the movable roller 203. The current directions of the two pairs of copper sheets 2 are opposite.

[0024] In this embodiment, both the fixed roller 202 and the movable roller 203 are rotatably equipped with connecting rods 204. The upper connecting rod 204 is fixed to both sides of the inner wall of the mounting frame 201. Slide grooves 205 are provided on both sides of the inner wall of the mounting frame 201. The two ends of the lower connecting rod 204 are slidably disposed with the inner walls of the two slide grooves 205 respectively. The two connecting rods 204 are fixed together by two bolts. Through the clamping structure, the operator inserts the protective sleeve 1 between several mounting frames 201, positioning the protective sleeve 1 between the fixed roller 202 and the movable roller 203. Then, by tightening the bolts, the lower connecting rod 204 slides upward within the slide groove 205, using the connecting rod 204 to drive the movable roller 203 closer to the fixed roller 202, thereby bringing the fixed roller 202 and the movable roller 203 closer together. 03 The protective sleeve 1 and its two sets of copper sheets 2 inside are clamped together to ensure a tight fit. When the clamping position needs to be adjusted, the movable mounting bracket 201, fixed roller 202 and movable roller 203 roll on the top and bottom surfaces of the protective sleeve 1, making it easy for the operator to adjust the clamping position. The current directions of the two sets of copper sheets 2 are opposite, and the reverse current paths will generate opposite magnetic fields, thus partially canceling the inductance. The symmetrical parallel structure makes the stacked structure of the two sets of copper sheets 2 more mechanically stable, reducing the mechanical stress caused by the current, making the busbar more reliable under various vibrations and temperature changes, and achieving electrical and mechanical balance. Through the above methods, it is easy for the operator to adjust the clamping position of the copper sheets 2, improving the busbar's performance and ensuring low impedance, low inductance and high reliability of the busbar.

[0025] In this embodiment, two fixing plates 303 are fixed on both sides of the mounting bracket 201. The top surface of the fixing plate 303 is provided with a fixing hole 301, and the bottom surface of the fixing plate 303 is fixed with a magnetic ring 302. The magnetic ring 302 is a magnet. After the fixing roller 202 and the movable roller 203 clamp and adjust the busbar, the operator can use the magnetic ring 302 to initially fix the mounting bracket 201 in the electrical cabinet or other operating environment. Then, the mounting bracket 201 is fixed in position through the fixing hole 301 and bolts.

[0026] In this embodiment, several heat dissipation grooves 4 are provided on the side of the two middle insulating layers 3 that are close to each other. The heat dissipation grooves 4 are evenly distributed along the length of the insulating layer 3. The upper and lower sets of heat dissipation grooves 4 are in corresponding positions. Flow holes 401 are provided on both sides of the protective sleeve 1. The flow holes 401 are connected to the heat dissipation grooves 4. When the busbar is transmitting current, the copper sheet 2 in the protective sleeve 1 generates a certain amount of heat. The flow holes 401 and the heat dissipation grooves 4 dissipate the heat, reducing the thermal effect caused by the current, thereby maintaining the low impedance of the busbar.

[0027] In this embodiment, the inner wall surface of the protective sleeve 1 is provided with a plurality of annular grooves 5. The plurality of annular grooves 5 are evenly distributed along the length direction of the protective sleeve 1. The plurality of annular grooves 5 are all connected to the flow hole 401. Through the plurality of annular grooves 5, heat dissipation can be carried out on the outside of the copper sheet 2, thereby improving the heat dissipation effect of the busbar.

[0028] In this embodiment, the copper sheet 2 has an insulating layer 3 extending from both ends, and a connection hole 6 is provided at both ends of the copper sheet 2. The connection hole 6 makes it easy for workers to connect and fix the copper sheet 2 to electrical equipment.

[0029] Working principle: In use, the operator inserts the protective sleeve 1 between several mounting brackets 201, positioning it between the fixed roller 202 and the movable roller 203. Then, the bolts are tightened, causing the connecting rod 204 located below to slide upwards within the groove 205. The connecting rod 204 drives the movable roller 203 closer to the fixed roller 202, thus clamping the protective sleeve 1 and its two sets of copper sheets 2 tightly together. When adjustment of the clamping position is needed, the mounting brackets 201 are moved, causing the fixed roller 202 and movable roller 203 to roll on the top and bottom surfaces of the protective sleeve 1, facilitating adjustment of the clamping position. The two sets of copper sheets 2 have opposite current directions; the reverse current paths generate opposite magnetic fields, partially canceling out the inductance. The symmetrical parallel structure ensures the stacked structure of the two sets of copper sheets 2... The structure is more mechanically stable, reducing mechanical stress caused by current, making the busbar more reliable under various vibrations and temperature changes, and achieving electrical and mechanical balance. After the fixed roller 202 and the movable roller 203 clamp and adjust the busbar, the operator can use the magnetic ring 302 to initially fix the mounting bracket 201 in the electrical cabinet or other operating environment. Then, the mounting bracket 201 is fixed in position through the fixing hole 301 and bolts. When the busbar is transmitting current, the copper sheet 2 in the protective sleeve 1 generates a certain amount of heat. The flow hole 401 and the heat dissipation groove 4 dissipate the heat, reducing the thermal effect caused by current, thereby maintaining the low impedance of the busbar. Through several ring grooves 5, heat can be dissipated on the outside of the copper sheet 2, improving the heat dissipation effect of the busbar. The connection hole 6 makes it easy for the operator to connect and fix the copper sheet 2 to the electrical equipment.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A low-impedance, low-inductance flexible laminated copper busbar, comprising a protective sleeve (1), characterized in that: The protective sleeve (1) has four copper sheets (2) inside, each of which is wrapped by an insulating layer (3). The four copper sheets (2) are arranged in pairs, and the two pairs of copper sheets (2) are arranged symmetrically up and down. The outer wall of the protective sleeve (1) is provided with a pressing structure. The press structure includes several mounting brackets (201) arranged below the protective sleeve (1). The mounting brackets (201) are rotatably equipped with fixed rollers (202) and movable rollers (203). The protective sleeve (1) is located between the fixed rollers (202) and the movable rollers (203).

2. The low-impedance, low-inductance flexible laminated copper busbar according to claim 1, characterized in that, Both the fixed roller (202) and the movable roller (203) are rotatably equipped with connecting rods (204). The upper connecting rod (204) is fixed to both sides of the inner wall of the mounting frame (201). The inner walls of the mounting frame (201) are provided with sliding grooves (205). The two ends of the lower connecting rod (204) are slidably disposed with the inner walls of the two sliding grooves (205) respectively. The two connecting rods (204) are fixed together by two bolts.

3. The low-impedance, low-inductance flexible laminated copper busbar according to claim 2, characterized in that, The mounting bracket (201) has two fixing plates (303) fixed on both sides. The top surface of the fixing plate (303) is provided with a fixing hole (301), and the bottom surface of the fixing plate (303) is fixed with a magnetic ring (302).

4. The low-impedance, low-inductance flexible laminated copper busbar according to claim 3, characterized in that, Several heat dissipation grooves (4) are provided on the side of the two middle insulating layers (3) that are close to each other. The heat dissipation grooves (4) are evenly distributed along the length of the insulating layer (3). The upper and lower sets of heat dissipation grooves (4) are in corresponding positions. Flow holes (401) are provided on both sides of the protective sleeve (1). The flow holes (401) are connected to the heat dissipation grooves (4).

5. A low-impedance, low-inductance flexible laminated copper busbar according to claim 4, characterized in that, The inner wall of the protective sleeve (1) is provided with a number of annular grooves (5), which are evenly distributed along the length of the protective sleeve (1), and all of the annular grooves (5) are connected to the flow hole (401).

6. A low-impedance, low-inductance flexible laminated copper busbar according to claim 5, characterized in that, The copper sheet (2) has an insulating layer (3) extending from both ends, and a connection hole (6) is provided at both ends of the copper sheet (2).

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