Battery high-voltage wiring harness and assembly thereof

Abstract

The invention discloses a battery high-voltage wire harness and an assembly thereof, and particularly relates to the field of electronic wire harnesses, the battery high-voltage wire harness comprises a wire core combination body, an insulating sheath and a filling layer, a groove is formed in the wire core combination body, the filling layer is located in the groove, and the insulating sheath sleeves the surfaces of the wire core combination body and the filling layer; the production process comprises the following steps: step 1, feeding materials into an extruder, and heating the materials into a molten state by the extruder; 2, one end of the wire core combination body extends into and penetrates through the extrusion die; 3, extruding the material in the molten state from one end of the extrusion die by the extruder; according to the invention, through the filling layer, part of the insulating sheath can be prevented from sinking into the groove, the phenomenon that part of the insulating sheath becomes thin due to sinking is avoided, through the second thin sheath, abrasion of the stranded wire core caused by the diversion module can be avoided, and through the first thin sheath, it can be ensured that the cross section of the wire core assembly after material filling is closer to a circle.

Description

Technical Field

[0001] This invention relates to the field of electronic wiring harness technology, and more specifically, to a battery high-voltage wiring harness and its assembly. Background Technology

[0002] High-power charging harnesses for new energy vehicles are special cables designed specifically for high-power DC fast charging scenarios. Their core function is to achieve safe, efficient, and stable power transmission from the charging pile to the electric vehicle battery pack under high voltage conditions. The harness typically includes two high-voltage DC cables (positive and negative), a grounding protection cable, an auxiliary power supply cable, two communication harnesses, and a charging connection confirmation harness. With the rapid development of new energy vehicles, technological advancements have also led to the development of liquid-cooled charging harnesses for new energy vehicles. One implementation method involves adding a pipe that allows coolant to flow through the harness, which is called an isolated liquid-cooled harness. Currently, in high-power wire harness manufacturing, different internal cables are produced separately and then combined at the end. Each cable has a multi-layer structure, with multiple cores arranged coaxially inside. The combination methods are parallel arrangement and twisted arrangement. An insulating sheath needs to be extruded on the outermost side of the cable using an extruder (material is added to the extruder, and the pressure and shear force generated by the screw rotation in the extruder can fully plasticize and uniformly mix the material, which is then extruded through the extrusion die at the port to form the insulating sheath) to protect the cable.

[0003] In existing technology, multiple coaxially arranged wire cores are combined to form a wire core assembly. Since the insulating sheath is formed by extruding molten material from an extruder, the extruded insulating sheath has a certain temperature. After the insulating sheath cools down, it will shrink and adhere to the surface of the wire core assembly due to thermal expansion and contraction. Since a groove is formed between two adjacent circular wire cores, part of the shrunken insulating sheath will sink into the groove, resulting in pits on the insulating sheath caused by shrinkage. Furthermore, the part of the insulating sheath located in the pit will also become thinner due to excessive shrinkage. That is, the wire harness will have an uneven surface, and the cross-section of the wire harness will not be a regular circle. Such a wire harness will not only affect its subsequent installation, but may also cause partial discharge, thereby affecting the service life of the wire harness. Summary of the Invention

[0004] The present invention provides a battery high-voltage wiring harness and its assembly, which aims to solve the problem that existing battery high-voltage wiring harnesses are prone to developing dents on the surface of the sheath during extrusion.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A battery high-voltage wiring harness includes a core assembly, an insulating sheath, and a filling layer. A groove is formed on the core assembly, the filling layer is located in the groove, and the insulating sheath is sleeved on the surface of the core assembly and the filling layer.

[0006] As a preferred embodiment of the present invention, the insulating sheath further includes a first thin sheath, which is located between the core assembly and the insulating sheath, and the filling layer is located on the side of the first thin sheath near the core assembly.

[0007] As a preferred embodiment of the present invention, the insulating sheath further includes a second thin sheath, which is located between the first thin sheath and the conductor assembly, and a filler layer is located between the first thin sheath and the second thin sheath.

[0008] As a preferred embodiment of the present invention, the extruder includes a frame, a drive motor is mounted on the frame, a reducer is mounted at the output end of the drive motor, a barrel is mounted at one end of the reducer, a screw shaft is rotatably mounted inside the barrel and fixedly connected to the output end of the reducer, and a feed hopper is mounted above the end of the barrel near the drive motor and is connected to the barrel.

[0009] As a preferred embodiment of the present invention, the output end of the barrel is provided with an extrusion die, and the extrusion die is fixedly connected to the barrel. The extrusion die includes an inner die and a through tube. A first extrusion cavity is formed between the inner die and the through tube. One end of the first extrusion cavity is fitted with the outer wall of the through tube to form an annular opening, and the other end of the first extrusion cavity is closed with the outer wall of the through tube.

[0010] As a preferred embodiment of the present invention, the core assembly passes through a through-tube, one end of which is equipped with a flow guiding module. One end of the flow guiding module is connected to the second extrusion chamber, and the other end extends into the groove of the core assembly.

[0011] As a preferred embodiment of the present invention, a rotating end is rotatably provided at one end of the through tube near the annular opening, and a second extrusion chamber is provided at one end of the rotating end. A flow guiding module is connected to the outside of the rotating end. The flow guiding module is inclined, and the inclination direction is the central axis of the rotating end. A flow splitting channel is provided at one end of the through tube, and the two ends of the flow splitting channel are respectively connected to the first extrusion chamber and the second extrusion chamber.

[0012] As a preferred embodiment of the present invention, the through tube is provided with an outer ring groove and an inner ring groove concentrically on one end corresponding to the rotating end and is adapted to the rotating end. A protruding threaded structure is provided around the outer side of the rotating end. The outer ring groove is divided into front and rear parts. The side wall of the front part is provided with a spiral groove adapted to the spiral structure on the outer side of the rotating end. A threaded connection is formed between the rotating end and the front part of the outer ring groove.

[0013] As a preferred embodiment of the present invention, one end of the rotating end is provided with an extrusion port, one end of the flow guiding module is provided with an injection port corresponding to the extrusion port, the other end of the flow guiding module is in an open state, the bottom of the flow guiding module is provided with a flow guiding groove and the bottom of the flow guiding groove is arc-shaped, and one end of the through pipe corresponding to the flow distribution channel extends outward to form an outer extension section and an inner extension section.

[0014] A battery high-voltage wiring harness assembly includes the aforementioned battery high-voltage wiring harness.

[0015] The technical effects and advantages of this invention are as follows: 1. This invention, by setting a flow guiding module, rotating end, and through pipe, diverts part of the molten material passing through the first extrusion chamber and then enters the second extrusion chamber through the diversion channel. The flow guiding module fills the depression between two adjacent sets of wire cores with the molten material, making the cross-section of the wire core assembly nearly circular. This avoids the insulation sheath covering the wire core assembly from forming depressions. In other words, the filling layer prevents the insulation sheath from sinking into the groove, thus preventing the insulation sheath from thinning due to indentation. This reduces the risk of partial discharge and electrical breakdown in the cable, and improves the product qualification rate.

[0016] 2. By setting a second thin sheath, the present invention can attach the filling material to the core assembly before it comes into contact with the core assembly, adding a layer of protection to the outside of the core assembly and preventing the flow guiding module from causing wear to the stranded core.

[0017] 3. By setting a first thin sheath, the present invention can further ensure that the cross-section of the wire core assembly after filling the material is closer to a circle before covering the insulating sheath. Then, covering the insulating sheath can ensure the smoothness of the outer surface of the wire harness. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the overall appearance of the present invention; Figure 2 This is a cross-sectional structure of the extrusion die of the present invention and a schematic diagram of the parallel wire core assembly passing through the extrusion die. Figure 3 For the present invention Figure 2 Enlarged view of point A; Figure 4This is a schematic diagram of the through-tube structure of the present invention; Figure 5 This is a schematic diagram of the rotating end and guide groove structure of the present invention; Figure 6 This is a schematic diagram of the stranded wire core assembly of the present invention passing through an extrusion die; Figure 7 This is a schematic diagram of other specifications of rotating end caps that can be replaced and installed according to the present invention; Figure 8 This is a cross-sectional view of the wire harness of the present invention.

[0019] In the diagram: 1. Frame; 2. Control device; 3. Drive motor; 4. Reducer; 5. Barrel; 6. Feed hopper; 7. Extrusion die; 71. Inner die; 72. Through pipe; 721. Diverting channel; 722. Outer annular groove; 723. Outer extension section; 724. Inner annular groove; 725. Inner extension section; 73. First extrusion chamber; 74. Rotating end; 741. Second extrusion chamber; 742. Extrusion port; 75. Flow guiding module; 751. Injection port; 752. Flow guiding groove; 8. Insulating sheath; 81. First thin sheath; 82. Second thin sheath; 83. Filler layer; 9. Core assembly. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example Refer to the attached diagram in the instruction manual. Figure 8 As shown, a battery high-voltage wiring harness includes a core assembly 9, an insulating sheath 8, and a filler layer 83. A groove is formed on the core assembly 9, the filler layer 83 is located in the groove, and the insulating sheath 8 is sleeved on the surface of the core assembly 9 and the filler layer 83.

[0022] It also includes a first thin sheath 81, which is located between the core assembly 9 and the insulating sheath 8, and a filler layer 83 is located on the side of the first thin sheath 81 closer to the core assembly 9.

[0023] It should be noted that the first thin sheath 81 is extruded and then followed by the insulating sheath 8.

[0024] It also includes a second thin sheath 82, which is located between the first thin sheath 81 and the core assembly 9, and a filler layer 83 is located between the first thin sheath 81 and the second thin sheath 82.

[0025] It should be noted that the second thin sheath 82 is extruded and then followed by the filler layer 83.

[0026] In another embodiment of the present invention, a battery high-voltage wiring harness manufacturing process is also disclosed, comprising the following steps: Step 1: Feed the material into the extruder, and the extruder heats the material into a molten state; Step 2: One end of the wire core assembly 9 extends into and passes through the extrusion die 7; Step 3: The extruder extrudes the molten material from one end of the extrusion die 7. The filler layer 83 first fills the groove of the wire core assembly 9, and the insulating sheath 8 is extruded and then fitted onto the surface of the wire core assembly 9. Step 4: After cooling, the insulating sheath 8 and the filler layer 83 are combined with the wire core assembly 9 to form a wire harness.

[0027] In an optional embodiment, preferably, please refer to Figures 1 to 5 The extruder includes a frame 1, on which a drive motor 3 and a control device 2 are mounted. A reducer 4 is mounted at the output end of the drive motor 3. A barrel 5 is mounted at one end of the reducer 4. A screw shaft is rotatably mounted inside the barrel 5 and is fixedly connected to the output end of the reducer 4. A feed hopper 6 is mounted above the end of the barrel 5 near the drive motor 3 and is connected to the barrel 5. Raw materials can be easily added into the barrel 5 through the feed hopper 6. The output end of the barrel 5 is provided with an extrusion die 7, and the extrusion die 7 is fixedly connected to the barrel 5. The extrusion die 7 includes an inner die and a through tube 72. The inner die 71 and the through tube 72 form a first extrusion chamber 73. One end of the first extrusion chamber 73 cooperates with the outer wall of the through tube 72 to form an annular opening. The other end of the first extrusion chamber 73 forms a closed state with the outer wall of the through tube 72. The wire core assembly 9 passes through the through tube 72. One end of the through tube 72 is equipped with a flow guiding module 75. One end of the flow guiding module 75 is connected to the second extrusion chamber 741, and the other end extends into the groove of the wire core assembly 9. The drive motor 3 is controlled by the control device 2. It should be noted that the control device 2 is a PLC control system used to control the opening, closing and power of the drive motor 3. This is existing technology and will not be elaborated. To achieve the connection between the extrusion die 7 and the barrel 5, a metal pipe is welded to one side of the flange at the outer end of the barrel 5 and the metal pipe is connected to the output end of the barrel 5. The same metal pipe is welded to one side of the flange on the outer side of the extrusion die 7, and the outer end of the metal pipe is integrally formed with the inner mold. The metal pipe on the extrusion die 7 is connected to the first forming cavity. Therefore, after the outer end of the barrel 5 and the flange on the outer side of the extrusion die 7 are connected by bolts, the molten material extruded from the output end of the barrel 5 will smoothly enter the first forming cavity.

[0028] like Figure 8 As shown, the multiple sets of wire cores in the wire core assembly 9 are parallel to each other. The wire core assembly 9 passes through the through tube 72 and through the extrusion die 7 and continues to pass through. The power of the wire core passing through is generated by the combined action of the processing equipment of the previous process (constructing the wire core assembly 9) and the next process (cooling and shaping) of the extrusion insulating sleeve 8. After melting into the first extrusion chamber 73, the insulating sleeve 8 will finally be formed at the annular opening at one end of the first extrusion chamber 73 and cover the outside of the passing wire core. A rotating end 74 is rotatably provided at one end of the through tube 72 near the annular opening. A second extrusion chamber 741 is opened at one end of the rotating end 74. A flow guiding module 75 is connected to the outside of the rotating end 74. The flow guiding module 75 is inclined, and the inclination direction is the central axis of the rotating end 74. A diversion channel 721 is opened at one end of the through tube 72, and the two ends of the diversion channel 721 are respectively connected to the first extrusion chamber 73 and the second extrusion chamber 741.

[0029] To enable the rotating end 74 to be rotated, the through pipe 72 is concentrically provided with an outer annular groove 722 and an inner annular groove 724 at one end corresponding to the rotating end 74, and these grooves are adapted to fit the rotating end 74. A protruding threaded structure is provided around the outer side of the end of the rotating end 74. The outer annular groove 722 is divided into front and rear parts. The side wall of the front part has a helical groove adapted to the helical structure on the outer side of the end of the rotating end 74. A threaded connection is formed between the end of the rotating end 74 and the front part of the outer annular groove 722. The area covered by the threaded structure on the rotating end 74 is consistent with the front part of the outer annular groove 722. The outer diameter of the rear part of the outer annular groove 722 is larger than that of the front part. The outer diameter of the spiral structure on the rotating end 74 is the same as the outer diameter of the spiral structure on the rotating end 74. Therefore, when the spiral structure on the outside of the spiral end is screwed into the outer ring groove 722 clockwise, it will first pass through a section of the thread groove. After continuing to screw, the spiral structure will enter the rear part of the outer ring groove 722 and disengage from the thread groove. At this time, the rotating end 74 can be rotated clockwise at the end of the through tube 72 without disengaging. At the same time, the second extrusion chamber 741 will correspond to the diversion channel 721 and be interconnected. When it is necessary to disassemble the rotating end 74, simply rotate the rotating end 74 counterclockwise. This forms a quick-release structure for the rotating end 74 on the through tube 72 and ensures that the rotating end 74 can rotate clockwise in one direction. The rotating end 74 and its threaded structure can be produced by metal processing methods (including but not limited to casting, turning, milling, etc.).

[0030] The outer end of the current guiding module 75 corresponds to and is close to the recess between two adjacent sets of wire cores; While the insulating sheath 8 is being extruded, some of the molten material passing through the first extrusion chamber 73 is diverted and flows through the diversion channel 721 into the second extrusion chamber 741. Subsequently, the molten material is filled in the depression between two adjacent sets of wire cores by the flow guiding module 75. The filled molten material forms a filling layer 83, making the cross-section of the wire core assembly 9 nearly circular. This prevents the insulating sheath 8 from forming depressions on the wire core assembly 9. In other words, the filling layer 83 prevents part of the insulating sheath 8 from sinking into the groove, thus preventing the insulating sheath 8 from becoming thinner due to sinking. This reduces the risk of partial discharge and electrical breakdown in the cable and improves the product qualification rate.

[0031] To allow the molten material in the second extrusion chamber 741 to enter the flow guiding module 75, an extrusion port 742 is opened at one end of the rotating end 74 for extruding the molten material in the second extrusion chamber 741. An injection port 751 is opened at one end of the flow guiding module 75, corresponding to the extrusion port 742. The other end of the flow guiding module 75 is in an open state. A flow guiding groove 752 is opened at the bottom of the flow guiding module 75, and the bottom of the flow guiding groove 752 is arc-shaped. This allows the material to be extruded from the extrusion port 742 and then enter the flow guiding groove 752 through the injection port 751 and finally be discharged from the open port. The arc-shaped design at the bottom of the flow guiding groove 752 can make the top of the discharged filling molten material arc-shaped, so that the outer diameter of the filled molten material is closer to the outer diameter of the wire core assembly 9. The fixed connection between the flow guiding module 75 and the rotating end 74 can be achieved by common metal parts connection methods such as welding and riveting.

[0032] Since the rotating end 74 and the through tube 72 are connected by a unidirectional rotation (when two workpieces are connected by rotation, an annular gap will inevitably be generated between them), the gap between the rotating end 74 and the through tube 72 exists in the outer annular groove 722 and the inner annular groove 724 respectively. When molten material is squeezed into the flow guide module 75 in the second extrusion chamber 741, the high pressure generated by the second extrusion chamber 741 will force some of the molten material into the gap between the rotating end 74 and the through pipe 72. Molten material will be squeezed out of the gaps in the outer ring groove 722 and the inner ring groove 724 respectively, thereby forming the first thin sheath 81 and the second thin sheath 82. The end of the through pipe 72 corresponding to the flow diversion channel 721 extends outward to form the outer extension section 723 and the inner extension section 725. When the first thin sheath 81 is extruded, it is guided by the outer extension section 723 and comes into contact with the insulating sheath 8. The second thin sheath 82 is guided by the inner extension section 725 and comes into contact with the molten material passing through the guide groove 752. Since the material of the extruded cable outer sheath is generally made of polyvinyl chloride (PVC) or polyethylene (PE), such materials are sticky after melting. Therefore, after the first thin sheath 81 comes into contact with the insulating sheath 8, it will wrap around the composite core along with the insulating sheath 8. After the second thin sheath 82 comes into contact with the molten material passing through the guide groove 752, it will move along with the molten material in the guide groove 752. At this time, the second thin sheath 82 will wrap around the core assembly 9 first, prior to the molten material in the guide groove 752. As can be seen from the above structure, the wire core assembly 9 will have a multi-layer structure attached after passing through the extrusion die 7, which consists of the following layers from the inside out: a second thin sheath 82, a filling material that fills the depression between two adjacent sets of wire cores, a first thin sheath 81, and the outermost insulating sheath 8.

[0033] After filling the depressions between adjacent wire cores with filling material, although it can effectively improve the problem of depressions caused by the depressions between adjacent wire cores after the insulation sheath 8 is covered, it still cannot make the cross-section of the wire core assembly 9 a complete circle. After covering the insulation sheath 8, the outer surface of the wire harness still cannot be guaranteed to be smooth. By filling the depression between adjacent wire cores with filling material and then covering the first thin sheath 81 before covering the insulating sheath 8, the cross-section of the wire core assembly after filling material can be further ensured to be closer to a circle. Then, covering the insulating sheath 8 can ensure the smoothness of the outer surface of the wire harness. Furthermore, when the first thin sheath 81 is extruded to wrap the core assembly, it can also flatten the filling material in the recesses of the two adjacent cores, making the filling material more uniform on the core assembly.

[0034] The second thin sheath 82, the filling material that fills the depression between two adjacent sets of wire cores, the first thin sheath 81, and the outermost insulating sheath 8 are a total of four layers. This structure can prevent the scratch from being further expanded due to bending after a single interface scratch on the outside, thus preventing damage to the wire core from penetrating.

[0035] Please see Figure 6If the core assembly 9 passing through the through tube 72 is a stranded core assembly, the recess between adjacent cores still corresponds to the flow guiding module 75. Due to the stranded core assembly, the recess between adjacent cores is spiral-shaped. When the stranded core assembly passes through the through tube 72, the flow guiding module 75 is restricted in the spiral recess between adjacent cores. The forward movement of the spiral recess will cause the corresponding flow guiding module 75 to make a clockwise circular motion. The clockwise unidirectional rotation between the rotating end 74 and the through tube 72 can support the circular motion of the flow guiding module 75. At this time, the flow guiding module 75 will always correspond to the spiral recess between adjacent cores. The stranded core assembly can also fill the recess between adjacent cores.

[0036] When the stranded core assembly passes through the through tube 72, the indentation between the cores will contact the flow guiding module 75 and drive the flow guiding module 75 to rotate. At this time, the flow guiding module 75 will contact the stranded core assembly and wear down the cores. The second thin sheath 82 can be attached to the core assembly before the filling material comes into contact with the core assembly, adding a layer of protection to the outside of the core assembly and preventing the flow guiding module 75 from causing wear to the stranded core.

[0037] Please see Figure 7 There are multiple sets of rotating end 74, each set with equidistantly installed inclined guide modules 75 (the number of guide modules 75 on each set of rotating end 74 includes, but is not limited to, three, four, six, and twelve sets). Since the number and thickness of the wire cores in different wire core assemblies 9 vary according to production requirements, the number of indentations between the wire cores and the final thickness of the wire core assembly 9 also vary. Therefore, it is necessary to adjust the number and tilt angle of the guide modules 75 according to the different number of indentations. This can be achieved by replacing different rotating end 74s through the quick-release structure between the rotating end 74 and the through tube 72.

[0038] As another implementation of the flow guiding module 75, the open port at the end of the flow guiding module 75 can be designed as a hemispherical shape to prevent the edges of the flow guiding module 75 from scratching the wire core when the stranded wire core assembly moves in a circular motion through the through tube 72.

[0039] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A battery high voltage harness, characterized by: It includes a core assembly (9), an insulating sheath (8) and a filler layer (83). A groove is formed on the core assembly (9), the filler layer (83) is located in the groove, and the insulating sheath (8) is fitted on the surface of the core assembly (9) and the filler layer (83).

2. The high voltage battery harness of claim 1, wherein: The insulating sheath (8) also includes a first thin sheath (81), which is located between the core assembly (9) and the insulating sheath (8), and a filler layer (83) is located on the side of the first thin sheath (81) near the core assembly (9).

3. The high voltage battery harness of claim 2, wherein: The insulating sheath (8) also includes a second thin sheath (82), which is located between the first thin sheath (81) and the core assembly (9), and the filler layer (83) is located between the first thin sheath (81) and the second thin sheath (82).

4. A battery high-voltage harness production device characterized by comprising: The device is used to manufacture the high-voltage battery harness as described in claim 3, including a frame (1), a drive motor (3) is provided on the frame (1), a reducer (4) is provided at the output end of the drive motor (3), a cylinder (5) is provided at one end of the reducer (4), a spiral shaft is rotatably installed inside the cylinder (5) and fixedly connected to the output end of the reducer (4), and a feed hopper (6) is provided above the end of the cylinder (5) near the drive motor (3) and the feed hopper (6) is connected to the cylinder (5).

5. A battery high-voltage wiring harness production apparatus according to claim 4, characterized in that: The output end of the barrel (5) is provided with an extrusion mold (7), and the extrusion mold (7) is fixedly connected to the barrel (5). The extrusion mold (7) includes an inner mold (71) and a through tube (72). A first extrusion cavity (73) is formed between the inner mold (71) and the through tube (72). One end of the first extrusion cavity (73) is fitted with the outer wall of the through tube (72) to form an annular opening, and the other end of the first extrusion cavity (73) is closed with the outer wall of the through tube (72).

6. The battery high-voltage wiring harness production apparatus according to claim 5, characterized in that: The core assembly (9) passes through the through tube (72), and a flow guide module (75) is installed at one end of the through tube (72). One end of the flow guide module (75) is connected to the second extrusion chamber (741), and the other end extends into the groove of the core assembly (9).

7. A battery high-voltage wiring harness production apparatus according to claim 6, characterized in that: The through-tube (72) has a rotating end (74) rotatably installed at one end near the annular opening. A second extrusion chamber (741) is opened at one end of the rotating end (74). A flow guide module (75) is connected to the outside of the rotating end (74). The flow guide module (75) is inclined, with the inclination direction being the central axis of the rotating end (74). A diversion channel (721) is opened at one end of the through-tube (72), and the two ends of the diversion channel (721) are respectively connected to the first extrusion chamber (73) and the second extrusion chamber (741).

8. A battery high-voltage wire harness production apparatus according to claim 7, characterized in that: The through tube (72) is concentrically provided with an outer ring groove (722) and an inner ring groove (724) at one end corresponding to the rotating end (74) and is adapted to the rotating end (74). A protruding thread structure is provided around the outer side of the end of the rotating end (74). The outer ring groove (722) is divided into front and rear parts. The side wall of the front part is provided with a spiral groove adapted to the spiral structure on the outer side of the end of the rotating end (74). A threaded connection is formed between the end of the rotating end (74) and the front part of the outer ring groove (74).

9. A battery high-voltage wiring harness production apparatus according to claim 8, characterized in that: The rotating end (74) has an extrusion port (742) at one end, and the flow guiding module (75) has an injection port (751) at one end, which corresponds to the extrusion port (742). The other end of the flow guiding module (75) is open. The flow guiding module (75) has a flow guiding groove (752) at the bottom, and the bottom of the flow guiding groove (752) is arc-shaped. The end of the through pipe (72) corresponding to the diversion channel (721) extends outward to form an outer extension section (723) and an inner extension section (725).

10. A battery high-voltage wiring harness assembly, characterized in that: Including the battery high-voltage wiring harness described in claim 3 above.

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