Busbar using conductive cloth as shielding material and production process and equipment thereof

By using conductive cloth as shielding material on the insulated busbar for automotive use, the problem of poor shielding effect under high-frequency electromagnetic fields in the prior art is solved, better flexibility and surface fit are achieved, and the shielding effect and durability are significantly improved.

CN119786130APending Publication Date: 2025-04-08BEIJING VICTORY ELECTRICAL TECH DEV CO LTD
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Patent Information

Application Number
CN202411958162.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-30
Publication Date
2025-04-08

AI Technical Summary

Technical Problem

The existing insulated busbars for automotive use are poorly shielded under high-frequency electromagnetic fields, and the copper foil/aluminum foil is poor in flexibility, making it difficult to fit tightly on irregular surfaces, resulting in shield leakage and poor durability and structural performance.

Method used

The conductive cloth is used as the shielding material, and the shielding layer is formed by continuous wrapping. The conductive cloth has good flexibility and surface fit, and can be closely attached to irregular surfaces, reducing poor contact problems and improving shielding effect.

Benefits of technology

Under low-frequency and high-frequency electromagnetic fields, the conductive cloth significantly improves the shielding effect, enhances flexibility and surface fit, reduces shielding leakage, and improves durability and structural performance.

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Abstract

The invention relates to a busbar using conductive cloth as a shielding material and a production process and equipment thereof, and relates to the technical field of electronic component processing, the busbar comprises a busbar conductor, an inner insulating layer arranged on the outer side of the busbar conductor, a shielding layer arranged on the outer side of the inner insulating layer, and an outer insulating layer arranged on the outer side of the shielding layer, the shielding layer is formed by continuously wrapping conductive cloth, the cross section of the busbar conductor is in any one of a rectangle, a trapezoid, a shape formed by connecting and surrounding a plurality of arc lines and a shape formed by combining, connecting and surrounding the arc lines and straight lines, and chamfers in smooth transition are arranged at intersections of the lines. The inner insulating layer and the outer insulating layer are made of any one or two of PVC (Polyvinyl Chloride), TPE (Thermoplastic Elastomer) and PET (Polyethylene Terephthalate) insulating materials; the conductive cloth adopts polyester fiber cloth as a base material, and a metal coating is electroplated after pretreatment. The conductive cloth has better flexibility and surface fitness, and can be tightly attached to an irregular surface, so that the problem of poor contact is reduced, and the shielding effect is improved.
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Description

Technical Field

[0001] The present application relates to the field of electrical component processing technology, and in particular to a busbar using conductive cloth as a shielding material and a production process and equipment thereof. Background Art

[0002] New energy electric vehicles have more advantages in boosting voltage than increasing current in terms of energy replenishment. The 800V high-voltage platform of new energy electric vehicles is becoming more and more popular. It is foreseeable that higher voltage platforms will be mass-produced in the future. A larger voltage will produce a larger electromagnetic field, so electromagnetic shielding has emerged with the market.

[0003] At present, when the automotive insulating busbar is used as the electromagnetic shielding layer, the method adopted is copper conductor weaving + copper foil / aluminum foil winding and covering to achieve shielding. The copper foil / aluminum foil mainly relies on reflection for shielding, but under high-frequency electromagnetic, shielding only by reflection still has a great risk of leakage; secondly, the copper foil / aluminum foil has poor flexibility and easily produces gaps on irregular surfaces, causing leakage; the copper foil / aluminum foil has poor durability and structural performance, and repeated bending leads to breakage. Summary of the invention

[0004] The purpose of this application is to provide a busbar using conductive cloth as a shielding material and its production process and equipment, and to use conductive cloth as a shielding material to achieve busbar shielding. The conductive cloth has good shielding effects in both low-frequency and high-frequency electromagnetic fields; the conductive cloth has better flexibility and surface conformability, and can fit tightly on irregular surfaces, reducing the problem of poor contact and improving the shielding effect.

[0005] The present application provides a busbar using conductive cloth as a shielding material, which adopts the following technical solution:

[0006] A busbar using conductive cloth as shielding material comprises a busbar conductor, an inner insulating layer arranged outside the busbar conductor, a shielding layer arranged outside the inner insulating layer and an outer insulating layer arranged outside the shielding layer, wherein the shielding layer is formed by continuously wrapping the conductive cloth.

[0007] As a preferred technical solution of the present application, the cross-sectional shape of the busbar conductor is any one of a rectangle, a trapezoid, a shape surrounded by multiple arcs, and a shape surrounded by a combination of arcs and straight lines, and a smooth transition chamfer is provided at the intersection of the lines.

[0008] As a preferred technical solution of the present application, the material of the busbar conductor can be one of copper, aluminum, copper alloy, aluminum alloy, and copper-aluminum composite material, and the busbar conductor can be a multi-piece soft busbar or an integral hard busbar.

[0009] As a preferred technical solution of the present application, the inner insulating layer and the outer insulating layer are set to any one or two of PVC, TPE, and PET insulating materials; the conductive cloth uses polyester fiber cloth as the base material, and is electroplated with a metal coating after pre-treatment.

[0010] The present application provides a busbar production process using conductive cloth as shielding material, which adopts the following technical solution:

[0011] A busbar production process using conductive cloth as a shielding material comprises the following steps:

[0012] S1: The inner insulating layer is coated on the outside of the busbar conductor by extrusion to form a semi-finished product 1;

[0013] S2: forming a semi-finished product 2 by continuously wrapping a shielding layer on the outside of the semi-finished product 1;

[0014] S3: Extruding an outer insulating layer on the outside of the semi-finished product 2 to form a semi-finished product 3;

[0015] S4: Cut, bend, punch and shape the semi-finished product 3 to form the semi-finished product 4:

[0016] S5: Peel and deburr the four surfaces of the semi-finished product to form a finished product.

[0017] As a preferred technical solution of the present application, when the shielding layer is wrapped around the outside of the semi-finished product 1 in step S2, the shielding layer is spirally wound and coated around the outside of the semi-finished product 1, or the shielding layer is horizontally laid and wrapped around the semi-finished product 1.

[0018] The present application provides a busbar production device using conductive cloth as shielding material, which adopts the following technical solution:

[0019] A production equipment for busbars, including a first extruder, a shielding layer laminating machine, a second extruder, a cutting machine, a bending machine and a punching machine, wherein the shielding layer laminating machine includes a base, a busbar conductor clamping mechanism connected to the base through a bearing seat, a driving mechanism for driving the busbar conductor clamping mechanism to rotate, and a conductive cloth unwinding mechanism arranged on one side of the busbar conductor clamping mechanism, wherein the driving mechanism drives the busbar conductor clamping mechanism to rotate so that the conductive cloth is spirally wound or flatly covered and wound around the busbar conductor.

[0020] As a preferred technical solution of the present application, the busbar conductor clamping mechanism includes a left-end clamping assembly and a right-end clamping assembly with the same structure, and the driving mechanism is connected to the left-end clamping assembly or the right-end clamping assembly; the left-end clamping assembly includes a rotating main shaft connected to the bearing seat, a square clamping sleeve adjustably connected to one end of the rotating main shaft, and a first clamping part and a second clamping part respectively connected to two opposite sides of the square clamping sleeve, and the busbar conductor can be inserted into the square clamping sleeve, and the two sides are respectively clamped by the first clamping part and the second clamping part.

[0021] As a preferred technical solution of the present application, the driving mechanism includes a driving motor connected to the base and a reduction gear set connected to the output shaft of the driving motor, and the output shaft of the reduction gear set is connected to the rotating main shaft.

[0022] As a preferred technical solution of the present application, the conductive cloth discharge mechanism includes two relatively arranged connecting seats, a connecting rod fixedly connected between the two connecting seats, a discharge rod movably connected between the two connecting seats, and a material roller top spring sleeved on the discharge rod. The two connecting seats are respectively fixed relatively to the two bearing seats, the discharge rod is arranged on the side of the connecting rod away from the busbar conductor clamping mechanism, and the angle between the discharge rod and the connecting rod is zero or an acute angle.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The busbar of the present application uses conductive cloth as a shielding material to achieve busbar shielding. The conductive cloth has good shielding effects in both low-frequency and high-frequency electromagnetic fields; the conductive cloth has better flexibility and surface conformability, and can fit tightly on irregular surfaces, reducing poor contact problems and improving shielding effects; the conductive cloth can better withstand repeated bending or deformation in a dynamic environment.

[0025] 2. The busbar production process of the present application reduces the weaving process, reduces process complexity, and improves production efficiency and production costs.

[0026] 3. When the busbar conductor of the present application is wrapped with conductive cloth on the outside, spiral winding or flat winding can be used. The spiral winding is tighter and can fit more closely with the inner insulation layer, reducing the problem of poor contact. The flat winding method wraps more comprehensively, is less likely to produce shielding holes, and improves the shielding effect.

[0027] 4. The shielding layer laminating machine for the busbar conductor of the present application adopts a relatively fixed conductive cloth discharging mechanism to place the conductive cloth, and adopts a relatively rotating busbar conductor clamping mechanism to clamp and fix the busbar conductor. The conductive cloth is gradually wound around the busbar conductor through the rotation of the busbar conductor, so that the conductive cloth is wound more tightly, the winding effect is higher, and the processing efficiency is improved.

[0028] 5. Two left and right clamping components are used to clamp the two ends of the busbar conductor. The ends of the busbar conductor are inserted into the square clamping sleeve and squeezed and clamped from both sides by the two clamping components, so that the busbar conductor will not slip out or fall when rotating, ensuring the stability of the busbar conductor when the conductive cloth is wound, ensuring the processing quality of the busbar, and the loosening and clamping methods of the two clamping components are simple and easy to operate, further improving the efficiency of busbar processing.

[0029] 6. In the present application, a connecting rod is added between the discharge rod and the rotating main shaft. The connecting rod can increase the structural strength and stability of the conductive cloth discharge mechanism. At the same time, the connecting rod can also serve as a tensioning rod and a flattening rod when the conductive cloth is discharged, thereby improving the tightness and flatness of the conductive cloth when it is wound; the setting angle of the discharge rod is adjustable, so that the winding angle of the conductive cloth can be adjusted. When the discharge rod is parallel to the rotating main shaft, the conductive cloth can be laid flat and wrapped around the conductive cloth as a whole, which makes the wrapping more comprehensive and can also save materials. When there is an acute angle between the discharge rod and the rotating main shaft, the conductive cloth can be spirally wound around the busbar conductor, thereby enhancing the tightness during winding. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic diagram of the structure of the busbar in Example 1 of the present application;

[0031] Figure 2 It is a schematic diagram of the overall structure of the busbar production equipment in Example 2 of the present application;

[0032] Figure 3 It is a structural schematic diagram of the left end clamping assembly in Example 2 of the present application;

[0033] Figure 4 It is a structural schematic diagram of the conductive fabric discharging mechanism in Example 2 of the present application;

[0034] Figure 5 It is a structural schematic diagram of the left end clamping assembly in Example 3 of the present application;

[0035] Figure 6 It is a structural schematic diagram of the conductive fabric discharging mechanism in Example 4 of the present application;

[0036] In the figure, 11, busbar conductor; 12, inner insulating layer; 13, shielding layer; 14, outer insulating layer; 2, base; 21, bearing seat; 22, base plate; 23, motor seat; 24, protective cover; 3, busbar conductor clamping mechanism; 31, rotating spindle; 32, square clamping sleeve; 321, side wall slot; 322, guide plate; 33, first clamping part; 331, first clamping pull rod; 332, first tension spring; 34, second clamping part; 341, second clamping pull rod; 342, second tension spring; 4, driving mechanism; 41, driving motor; 42, reduction gear set; 5, conductive cloth discharge mechanism; 51, connecting seat; 52, connecting rod; 53, discharge rod; 54, material roller top spring. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1 -Attached Figure 6 , further details of this application are given.

[0038] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0039] Embodiment 1: This application proposes a busbar using conductive cloth as a shielding material, referring to Figure 1 The busbar includes a busbar conductor 11, an inner insulating layer 12, a shielding layer 13 and an outer insulating layer 14 from the inside to the outside, and the layers are tightly wrapped outwards.

[0040] The material of the busbar conductor 11 can be one of copper, aluminum, copper alloy, aluminum alloy, and copper-aluminum composite material. The busbar conductor 11 can be a composite structure formed by stacking multiple soft busbars or a single integral hard busbar. In this embodiment, an integral structure is adopted. The cross-sectional shape of the busbar conductor 11 is any one of a rectangle, a trapezoid, a shape surrounded by multiple arcs, and a shape surrounded by a combination of arcs and straight lines, and a smooth transition chamfer is provided at the intersection of the lines to avoid damaging the outer structure and reducing the service life of the busbar. In this embodiment, the busbar conductor 11 is shown as a rectangle.

[0041] The inner insulating layer 12 is wrapped around the outer side of the busbar conductor 11 . The material of the inner insulating layer 12 is set to be any one of PVC, TPE, and PET insulating materials, and is wrapped around the outer side of the busbar conductor 11 by extrusion.

[0042] The shielding layer 13 is formed by continuously wrapping a conductive cloth, which uses polyester fiber cloth as a base material and is electroplated with a metal coating after pre-treatment. The conductive cloth can be wrapped around the outside of the inner insulating layer 12 by multiple turns of spiral winding, or it can be wrapped in a horizontal overall flat manner perpendicular to the length direction of the busbar conductor 11.

[0043] The outer insulating layer 14 is wrapped around the outside of the shielding layer 13. The material of the outer insulating layer 14 is set to any one of PVC, TPE, and PET insulating materials. It can be the same as the material of the inner insulating layer 12 or different. The outer insulating layer 14 is also wrapped around the outside of the shielding layer 13 by extrusion.

[0044] Embodiment 2: This application also proposes a busbar production device using conductive cloth as a shielding material, the device includes a first extruder, a shielding layer laminating machine, a second extruder, a cutting machine, a bending machine and a punching machine.

[0045] Reference Figure 2 The shielding layer laminating machine includes a base 2, a busbar conductor clamping mechanism 3, a driving mechanism 4 and a conductive cloth unwinding mechanism 5. The base 2 is used as the support of the whole machine to keep the machine stable during operation and to install other structures; the busbar conductor clamping mechanism 3 is used to fix the busbar conductor 11 to facilitate the winding of the conductive cloth; the conductive cloth unwinding mechanism 5 is used to place the rolled conductive cloth and release the conductive cloth outward; the driving mechanism 4 is used to drive the busbar conductor clamping mechanism 3 to gradually wind the conductive cloth around the busbar conductor 11.

[0046] The base 2 includes a rectangular base plate 22 and two bearing seats 21 relatively mounted at both ends of the base plate 22. One end of the base plate 22 is connected to a motor seat 23 for mounting the drive mechanism 4. A protective cover 24 is mounted on each of the bearing seats 21 to protect the bearing seats 21.

[0047] The driving mechanism 4 is mounted on the motor seat 23 , and includes a driving motor 41 and a reduction gear set 42 . The output shaft of the driving motor 41 is connected to the input shaft of the reduction gear set 42 , and the output shaft of the reduction gear set 42 is connected to the busbar conductor clamping mechanism 3 .

[0048] Reference Figure 2 and 3 The busbar conductor clamping mechanism 3 includes a left-end clamping assembly and a right-end clamping assembly that are identical in structure and arranged oppositely. The driving mechanism 4 is connected to the left-end clamping assembly or the right-end clamping assembly. In this embodiment, the output shaft of the reduction gear set 42 is connected to the left-end clamping assembly.

[0049] Taking the left end clamping assembly as an example, the left end clamping assembly includes a rotating spindle 31, a square clamping sleeve 32, a first clamping part 33 and a second clamping part 34. The rotating spindle 31 is rotatably connected to the bearing seat 21, and one end thereof is connected to the output shaft of the reduction gear set 42. A section of the rotating spindle 31 away from the reduction gear set 42 is set as a square rod structure for installing the square clamping sleeve 32; the square clamping sleeve 32 is set as a sleeve with a square cross section, which is sleeved on the rotating spindle 31 and locked after adjusting the position by a locking bolt. One end of the square clamping sleeve 32 away from the rotating spindle 31 remains in an idle state for inserting the busbar conductor 1. Side wall slots 321 are provided on two opposite side walls of the square clamping sleeve 32, and the first clamping part 33 and the second clamping part 34 are installed in the side wall slots 321.

[0050] In this embodiment, the first clamping component 33 and the second clamping component 34 are installed on the upper and lower side walls of the square clamping sleeve 32 , and the two side wall slots 321 are staggered so that the first clamping component 33 and the second clamping component 34 are staggered on the square clamping sleeve 32 . The first clamping component 33 includes a first clamping rod 331 and a first tension spring 332. One end of the first clamping rod 331 is located outside the square clamping sleeve 32 and is perpendicular to the square clamping sleeve 32, and the other end passes through the side wall slot 321 and enters the square clamping sleeve 32. The end face of the first clamping rod 331 located in the square clamping sleeve 32 is provided with anti-slip serrations for pressing against the side surface of the busbar conductor 11. The first tension spring 332 is sleeved on the part of the first clamping rod 331 located outside the square clamping sleeve 32, and the two ends are respectively fixed on the outer end of the first clamping rod 331 and the outer wall of the square clamping sleeve 32. The first clamping rod 331 is pulled outward, and the first clamping rod 331 slides out of the side wall slot 321. The first clamping rod 331 is released, and the first clamping rod 331 enters the square clamping sleeve 32 and presses against the busbar conductor 11. The second clamping member 34 has the same structure as the first clamping member 33. The second clamping member 34 includes a second clamping rod 341 and a second tension spring 342. The first clamping rod 331 and the second clamping rod 341 are respectively pressed against the upper and lower sides of the busbar conductor 11 to increase the axial friction and radial pressure of the busbar conductor 11, so as to lock the busbar conductor 11 and prevent it from falling off. The right end clamping assembly locks the other end of the busbar conductor 11 in the same way.

[0051] Reference Figure 4The conductive cloth feeding mechanism 5 comprises a connecting seat 51, a connecting rod 52, a feeding rod 53 and a material roller top spring 54. The connecting seat 51 is set as a long strip block structure, two of which are arranged opposite to each other and fixed above the protective outer cover 24 of the two bearing seats 21 respectively; the connecting rod 52 is set as a round rod, fixedly arranged between the lower parts of the two connecting seats 51 and the connecting rod 52 is parallel to the rotating main shaft 31; the feeding rod 53 is connected between the upper parts of the two connecting seats 51. In this embodiment, the feeding rod 53 is detachably connected to the two connecting seats 51 at the same time and is parallel to the connecting rod 52, so that the conductive cloth can be laid flat on the busbar conductor 11 in the horizontal direction.

[0052] The upper end surfaces of the two connecting seats 51 are provided with U-shaped grooves with the openings facing upwards. The two ends of the discharge rod 53 are placed in the U-shaped grooves, and the ends pass through the connecting seats 51 to be exposed outwards and are threadedly connected with nuts, so that the discharge rod 53 can be locked on the two connecting seats 51. The material roller with the conductive cloth is sleeved on the discharge rod 53, and a material roller top spring 54 is sleeved at each end of the material roller on the discharge rod 53. One end of the material roller top spring 54 abuts the material roller, and the other end abuts the connecting seat 51, so that the material roller moves greatly when discharging the material. When the conductive cloth is discharged, it needs to bypass the connecting rod 52, and the connecting rod 52 is used to tension and flatten it.

[0053] In this embodiment, a blade may be slidably disposed on the connecting rod 52 for cutting the conductive cloth.

[0054] Example 3: Reference Figure 5 The difference between this embodiment and the second embodiment is that the structures of the clamping components at both ends are different. In this embodiment, the first clamping part 33 and the second clamping part 34 are installed on the upper and lower side walls of the square clamping sleeve 32. The two side wall slots 321 are arranged opposite to each other, so that the first clamping part 33 and the second clamping part 34 are symmetrically distributed on the square clamping sleeve 32. An inclined guide plate 322 is arranged outside the opening of the side wall slot 321. The guide plate 322 is inclined toward the square of the rotating main shaft, so that the first clamping pull rod 331 is also inclined to be inserted into the square clamping sleeve 32. The end of the first clamping pull rod 331 inserted into the square clamping sleeve 32 is a wedge-shaped structure, which contacts the surface of the busbar conductor 11 through the inclined surface. The contact surface is large, which can increase the friction resistance when the busbar conductor 11 is pulled out. The first tension spring 332 is also sleeved on the part of the first clamping pull rod 331 located outside the square clamping sleeve 32, and the two ends are respectively fixed on the outer end of the first clamping pull rod 331 and the outer wall of the square clamping sleeve 32.

[0055] Example 4: Reference Figure 6The difference between this embodiment and embodiment 2 is that the connection structure between the discharge rod 53 and the connecting seat 51 is different. In this embodiment, the connecting seat 51 close to the driving mechanism 4 is set as an arc-shaped strip structure, and the concave surface faces another rectangular long strip connecting seat 51. A U-shaped groove is opened at the upper end of the arc-shaped connecting seat 51. One end of the discharge rod 53 is hinged on the rectangular connecting seat 51, and the other end passes through the U-shaped groove on the arc-shaped connecting seat 51, and is connected with a nut for locking and fixing, so that the relative angle between the discharge rod 53 and the connecting rod 52 can be adjusted, so that the conductive cloth can be spirally wound on the busbar conductor 11.

[0056] Embodiment 5: The present application also proposes a busbar production process using conductive cloth as a shielding material, comprising the following steps:

[0057] S1: Extruding and coating an inner insulating layer 12 on the outer side of the busbar conductor 11 by a first extruder to form a semi-finished product 1;

[0058] S2: After cooling, a shielding layer 13 is continuously wrapped on the outer side of the semi-finished product 1 by a shielding layer laminating machine to form a semi-finished product 2;

[0059] S3: Extruding and coating an outer insulating layer 14 on the outer side of the semi-finished product 2 by a second extruder to form a semi-finished product 3;

[0060] S4: The semi-finished product 3 is cut by a cutting machine, bent by a bending machine, and punched by a punching machine to be shaped to form a semi-finished product 4:

[0061] S5: Peel and deburr the four surfaces of the semi-finished product to form a finished product.

[0062] When the shielding layer is wrapped around the outside of the semi-finished product 1 in step S2, the shielding layer 13 can be spirally wound around the outside of the semi-finished product 1, or the shielding layer 13 can be horizontally laid and wrapped around the semi-finished product 1.

[0063] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A busbar using conductive cloth as shielding material, characterized in that: The invention comprises a busbar conductor (11), an inner insulating layer (12) arranged outside the busbar conductor (11), a shielding layer (13) arranged outside the inner insulating layer (12), and an outer insulating layer (14) arranged outside the shielding layer (13); the shielding layer (13) is formed by continuously wrapping a conductive cloth.

2. A busbar using conductive cloth as shielding material according to claim 1, characterized in that: The cross-sectional shape of the busbar conductor (11) is any one of a rectangle, a trapezoid, a shape in which a plurality of arcs are connected and surrounded, and a shape in which an arc and a straight line are combined and connected and surrounded, and a smoothly transitioned chamfer is provided at the intersection of the lines.

3. The busbar using conductive cloth as shielding material according to claim 1, characterized in that: The material of the busbar conductor (11) may be one of copper, aluminum, copper alloy, aluminum alloy, and copper-aluminum composite material, and the busbar conductor (11) may be a multi-piece soft busbar or an integral hard busbar.

4. The busbar using conductive cloth as shielding material according to claim 1, characterized in that: The inner insulating layer (12) and the outer insulating layer (14) are set to be any one or two of PVC, TPE, and PET insulating materials; the conductive cloth uses polyester fiber cloth as a base material, and is electroplated with a metal coating after pre-treatment.

5. A production process for the busbar according to any one of claims 1 to 4, characterized in that: The following steps are involved: S1: Extruding and coating the inner insulating layer (12) on the outer side of the busbar conductor (11) to form a semi-finished product 1; S2: forming a semi-finished product 2 by continuously wrapping a shielding layer (13) on the outer side of the semi-finished product 1; S3: Extruding and coating the outer insulating layer (14) on the outer side of the semi-finished product 2 to form a semi-finished product 3; S4: Cut, bend, punch and shape the semi-finished product 3 to form the semi-finished product 4: S5: Peel and deburr the four surfaces of the semi-finished product to form a finished product.

6. A production process for a busbar according to claim 5, characterized in that: When the shielding layer (13) is wrapped around the outside of the semi-finished product 1 in step S2, the shielding layer (13) is spirally wound and coated around the outside of the semi-finished product 1, or the shielding layer (13) is horizontally laid and wrapped around the semi-finished product 1.

7. A production device for the busbar according to any one of claims 1 to 4, characterized in that: The invention comprises a first extruder, a shielding layer laminating machine, a second extruder, a cutting machine, a bending machine and a punching machine. The shielding layer laminating machine comprises a base (2), a busbar conductor clamping mechanism (3) connected to the base (2) via a bearing seat (21), a driving mechanism (4) for driving the busbar conductor clamping mechanism (3) to rotate, and a conductive cloth unwinding mechanism (5) arranged on one side of the busbar conductor clamping mechanism (3). The driving mechanism (4) drives the busbar conductor clamping mechanism (3) to rotate, so that the conductive cloth is spirally wound or flatly covered and wound around the busbar conductor (1).

8. The production equipment for busbars according to claim 7, characterized in that: The busbar conductor clamping mechanism (3) comprises a left-end clamping assembly and a right-end clamping assembly of the same structure, and the driving mechanism (4) is connected to the left-end clamping assembly or the right-end clamping assembly; the left-end clamping assembly comprises a rotating main shaft (31) connected to the bearing seat (21), a square clamping sleeve (32) adjustably connected to one end of the rotating main shaft (31), and a first clamping component (33) and a second clamping component (34) respectively connected to two opposite sides of the square clamping sleeve (32); the busbar conductor (1) can be inserted into the square clamping sleeve (32), and the two sides are respectively clamped by the first clamping component (33) and the second clamping component (34).

9. A production equipment for busbars according to claim 8, characterized in that: The driving mechanism (4) comprises a driving motor (41) connected to the base (2) and a reduction gear set (42) connected to the output shaft of the driving motor (41); the output shaft of the reduction gear set (42) is connected to the rotating main shaft (31).

10. The production equipment for busbars according to claim 7, characterized in that: The conductive cloth feeding mechanism (5) comprises two connecting seats (51) arranged opposite to each other, a connecting rod (52) fixedly connected between the two connecting seats (51), a feeding rod (53) movably connected between the two connecting seats (51), and a material roller top spring (54) sleeved on the feeding rod (53); the two connecting seats (51) are respectively fixed relative to the two bearing seats (21); the feeding rod (53) is arranged on a side of the connecting rod (52) away from the busbar conductor clamping mechanism (3); and the angle between the feeding rod (53) and the connecting rod (52) is zero or an acute angle.

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