A new energy vehicle cable and a cable arrangement device thereof

Abstract

The present invention discloses a new energy vehicle cable and a wiring arrangement device thereof, wherein the cable comprises a plurality of functional wires arranged in a straight line and a shielding layer wrapped around the outside of the functional wires, the functional wires comprising a first functional wire located in the middle and a second functional wire located on both sides, a sheath layer is arranged outside the shielding layer, and a filling is arranged between the shielding layer and the functional wires. The internal wire cores of the new energy vehicle cable of the present invention are arranged in a straight line to form a flat state, which is convenient for wiring of cable circuits inside a limited space of a car and saves space for cable use. The wiring arrangement device is used to realize the straight line arrangement and wiring of the functional wires, and the filling is obtained by softening and extruding a bonding layer wrapped around the outside of the first functional wire, and the bonding layer is squeezed out from between the functional wires to obtain the filling, so that the functional wires can be fully filled, thereby overcoming the problem in the prior art that the cable filling material is insufficiently filled by extruding the wire core from the outside.

Description

Technical Field

[0001] The present invention relates to the field of cable technology, and in particular to a new energy vehicle cable and a cable arrangement device thereof. Background Art

[0002] In order to meet the power requirements and circuit control requirements, existing new energy vehicles need to connect multiple battery modules in parallel to power their motors, and also need multiple signal lines for circuit control. Therefore, the battery connection circuits of new energy vehicles are complex, and the connection lines are numerous and cumbersome. In order to improve the transmission performance of signal lines, the cables are required to have better shielding effect of electromagnetic radiation, so as to maintain stable signal transmission function. In the prior art, the special structure of flat cables enables the cables to be arranged neatly, and can realize the connection of multi-dimensional circuits in a narrow space, greatly saving the space used for cables.

[0003] In order to facilitate the sheath extrusion material of the flat cable core to enter between the cores, a certain width of filling gap is generally set between the cores of the flat cable. The filling gap increases the width of the flat cable and also affects the structural stability of the cable. If the cores of the flat cable are in contact with each other and arranged closely, there will be recessed grooves between the cores. Since the size of the bottom of the recessed groove is too small, the sheath extrusion material enters the recessed groove from the outside, which will result in insufficient filling. Summary of the invention

[0004] The present invention applies a flat cable structure to new energy vehicles, and proposes a new energy vehicle cable, which arranges the wire cores in a flattened contact manner to obtain a cable with a stable wire core structure. At the same time, a wire arrangement device for the production of the above-mentioned new energy vehicle cable is proposed, which arranges the wire cores inside the cable during the production of the flat cable to obtain a cable with a stable wire core combination.

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

[0006] A new energy vehicle cable includes a plurality of functional wires arranged in a line, the functional wires are arranged in contact with each other to form a wire core group, the functional wires include a first functional wire located in the middle and second functional wires located on both sides, and the second functional wires are formed by wrapping a supporting layer outside the first functional wire. The new energy vehicle cable also includes a shielding layer and a sheath layer wrapped outside the shielding layer, the shielding layer is wrapped around the outside of the wire core group, and a filling is arranged between the shielding layer and the wire core group. The filling is formed by the bonding layer wrapped outside the first functional wire being softened and extruded in the inner space by heat, and the inner space is a strip-shaped cavity formed between the shielding layer and the wire core group, and the bonding layer is squeezed out from between the functional wires to form a contact arrangement between the functional wires.

[0007] Preferably, the bonding layer is a thermoplastic material.

[0008] Preferably, the first functional line includes a conductive wire and an insulating layer wrapped around the conductive wire.

[0009] Preferably, the insulating layer is made of polyimide, and the supporting layer is made of silicone rubber.

[0010] The present invention also proposes a wire arranging device for the production of the above-mentioned new energy vehicle cables. The wire arranging device is used in conjunction with the production equipment of the new energy vehicle cables. The production equipment of the new energy vehicle cables includes a second group of extrusion equipment for respectively extruding a bonding layer and a supporting layer outside the first functional line, a wrapping equipment for wrapping a shielding layer, and a molding extrusion equipment for extruding a sheath layer. The molding extrusion equipment includes a preheating sleeve for heating and softening the bonding layer, a first chamber for forming a filling, and a second chamber for extruding the sheath layer.

[0011] The above-mentioned wire arrangement device includes an outer wire arrangement assembly and an inner wire arrangement assembly. The outer wire arrangement assembly includes a fourth outer wire arrangement assembly, which is used to contact and combine the second functional wire and the first functional wire with the bonding layer to form a wire core group. After the wire core group is wrapped with the shielding layer, an inner space is formed between the shielding layer and the wire core group. The inner wire arrangement assembly is located inside the first chamber, and the inner wire arrangement assembly includes two second guide wheels for horizontally limiting the wire core group and two inner limit plates for vertically limiting the wire core group. The two second guide wheels are located between the inner limit plates, and the two second guide wheels are used to squeeze from both sides of the wire core group to the middle of the wire core group to achieve the softened bonding layer being squeezed out from between the functional wires to be filled.

[0012] Preferably, the inner limit plate is provided with a plurality of pressure relief holes which penetrate the inner limit plate, and the pressure relief holes are used for the circulation of the extrudate inside the first chamber. The extrudate enters from the pressure relief holes into a third chamber between the inner limit plate and the shielding layer, and the extrudate squeezes the shielding layer in the third chamber to form a depression in the shielding layer, and the depression is used to accommodate the dimensional changes in the wrapping contour of the shielding layer caused by the functional lines being close to each other.

[0013] Preferably, the production equipment of the new energy vehicle cable also includes a first group of extrusion equipment for extruding the insulating layer, and the outer wire assembly also includes a first outer wire assembly, a second outer wire assembly and a third outer wire assembly; the first outer wire assembly is arranged on the feeding side of the first group of extrusion equipment, the second outer wire assembly is arranged on the feeding side of the second group of extrusion equipment, and the third outer wire assembly and the fourth outer wire assembly are arranged between the second group of extrusion equipment and the wrapping equipment. The functional line passes through the first outer wire assembly, the first group of extrusion equipment, the second outer wire assembly, the second group of extrusion equipment, the third outer wire assembly, the fourth outer wire assembly, the wrapping equipment, the molding extrusion equipment and the inner wire assembly arranged inside the molding extrusion equipment in sequence.

[0014] Preferably, the first outer cable assembly, the second outer cable assembly and the third outer cable assembly have the same structure, the third outer cable assembly includes a first base and a cable passing seat, the first base is provided with guide plates on both sides of the cable passing seat, the first base is provided with a horizontal slide groove, a first limiting bracket is provided inside the slide groove, the first limiting bracket is slidably connected to the first base, a first positioning bolt is provided on the first limiting bracket, the first positioning bolt passes through the first limiting bracket and is rotatably connected to the first limiting bracket, and one end of the first positioning bolt is rotatably connected to the cable passing seat.

[0015] Preferably, the fourth outer cable assembly includes a second base, two guide balls and an outer limit plate, the outer limit plate is located above the guide ball, the first functional line and the second functional line pass through the combined space between the outer limit plate, the second base and the two guide balls to be combined to form a wire core group. The guide ball is connected to the second base through a second positioning bolt, the outer limit plate is connected to the second base through a third positioning bolt, the upper part of the third positioning bolt is provided with a second limit bracket for limiting the outer limit plate, and the bottom of the third positioning bolt is threadedly connected to the limit seat at the bottom of the second base.

[0016] The beneficial effects of the present invention are:

[0017] 1. The functional lines inside this new energy vehicle cable are arranged in a straight line to form a flat state, which is convenient for wiring a large number of cable circuits in the limited space inside the car and saves space for cable use.

[0018] 2. The functional wires of this new energy vehicle cable are arranged in contact to form a compact wire core structure, which can improve the structural strength of the wire core part of the cable, and the filling is used to reinforce the wire core combination structure. The filling of this cable is obtained by extruding the bonding layer under heat and softening. The bonding layer is extruded from between the functional wires to obtain filling, and the functional wires can be filled fully, greatly reducing the situation of insufficient filling. The present invention obtains filling by presetting a thermoplastic bonding layer and softening and reprocessing the bonding layer, thereby overcoming the problem of insufficient filling of the cable filler in the prior art by externally extruding and wrapping the wire core.

[0019] 3. The present invention also proposes a cable arrangement device for the production of new energy vehicle cables. The cable arrangement device can be used in combination with production equipment to achieve straight-line contact arrangement and routing between functional wires. The inner cable arrangement component is used in combination with the molding extrusion equipment. The inner cable arrangement component is used to push the functional wires closer to each other. The extrusion pressure of the extrusion material of the molding extrusion equipment realizes the synchronous deformation of the shielding layer, adapts to the size change of the shielding layer wrapping contour caused by the functional wires approaching each other, and increases the fitting surface between the filling and the shielding layer, reducing the probability of electromagnetic waves penetrating from the non-fitting part of the shielding layer, thereby reducing the leakage of the internal electromagnetic field and reducing the impact on other electrical components inside the car. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is the structural diagram of the new energy vehicle cable;

[0021] Figure 2 This is a schematic diagram of the distribution structure of the cable arrangement device used in the production of new energy vehicle cables;

[0022] Figure 3 This is a top view of the structure of the cable arrangement device for the production of new energy vehicle cables;

[0023] Figure 4 This is the state change diagram of the core during the production of this new energy vehicle cable;

[0024] Figure 5 It is a schematic diagram of the structure of the molding extrusion equipment from a top view;

[0025] Figure 6 It is a schematic diagram of the structure of the molding extrusion equipment when looking down at point A (the inner limit plate is not provided with a limit strip);

[0026] Figure 7 It is a schematic diagram of the structure of the molding extrusion equipment when viewed from above at B;

[0027] Figure 8 is a schematic structural diagram of a third outer wiring assembly;

[0028] Fig. 9 It is a schematic diagram of the structure of the third outer cable assembly slide groove;

[0029] Fig.10 is a schematic structural diagram of a fourth outer wiring assembly;

[0030] Fig.11 is a schematic diagram of the structure of the fourth outer cable assembly from a top view;

[0031] Fig.12 It is a schematic diagram of the structure of the inner limit plate (with limit strips) of the inner cable assembly;

[0032] Fig.13 This is a schematic diagram of the structure of the molding extrusion equipment when looking down at point A (the inner limit plate is provided with a limit strip).

[0033] In the figure: 101, first functional line; 102, second functional line; 103, filling; 104, shielding layer; 105, sheath layer; 106, inner space; 1011, conductor; 1012, insulation layer; 1013, bonding layer; 1021, support layer;

[0034] 1. Wire release device; 2. First group of extrusion equipment; 3. First cooling tank; 4. Second group of extrusion equipment; 5. Wrapping equipment; 6. Molding extrusion equipment; 7. Inner wire assembly; 8. Second cooling tank; 9. Wire take-up device; 10. First outer wire assembly; 11. Second outer wire assembly; 12. Third outer wire assembly; 13. Fourth outer wire assembly; 14. Wire wheel;

[0035] 21. First extruder; 41. Second extruder; 42. Third extruder; 61. First chamber; 62. Second chamber; 63. Third chamber; 64. Preheating sleeve; 71. Second guide wheel; 72. First adjustment cylinder; 73. Inner limit plate; 74. Second adjustment cylinder; 75. Pressure relief hole; 76. Limit strip; 121. First base; 122. Line seat; 123. Slide; 124. First limit bracket; 125. First positioning bolt; 126. Guide plate; 131. Second base; 132. Guide ball; 133. Second positioning bolt; 134. Outer limit plate; 135. Third positioning bolt; 136. Second limit bracket; 137. Limit seat. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0037] Example 1

[0038] Reference Figure 1 A new energy vehicle cable includes a plurality of functional wires arranged in a line, a filler 103, two shielding layers 104, and a sheath layer 105. The functional wires are arranged in contact with each other to form a core group, and the functional wires include a first functional wire 101 and a second functional wire 102. The number of the second functional wires 102 is two, and the second functional wires 102 are located on both sides of the first functional wire 101. The shielding layer 104 is wrapped around the outside of the core group, and a filler 103 is provided between the shielding layer 104 and the core group, and a sheath layer 105 is provided outside the shielding layer 104.

[0039] The first functional line 101 comprises a conductor 1011 and an insulating layer 1012 wrapped around the conductor 1011. The conductor 1011 is formed by twisting copper wires for transmitting electrical signals, and the insulating layer 1012 is used to insulate the conductor 1011. The second functional line 102 is formed by wrapping a supporting layer 1021 around the first functional line 101, and the supporting layer 1021 is used to support the shielding layer 104.

[0040] Due to the support of the shielding layer 104 by the support layer 1021, a strip-shaped cavity is formed between the shielding layer 104 and the wire core group, and the strip-shaped cavity is the inner space 106. The filling 103 is formed by the bonding layer 1013 wrapped around the outside of the first functional line 101 being softened by heat and extruded inside the inner space 106. The bonding layer 1013 is wrapped around the outside of the insulating layer 1012 of the first functional line 101, and the outer diameter of the support layer 1021 is the same as that of the bonding layer 1013.

[0041] In this embodiment, the material of the insulating layer 1012 is polyimide, which is a high-performance polymer with excellent high temperature resistance, good mechanical properties and electrical insulation properties. Its long-term use temperature range can reach -200°C to 300°C, and it can still maintain excellent mechanical properties and electrical properties at high temperatures. The material of the support layer 1021 is silicone rubber, which is a polymer with a silicon-oxygen bond as the main chain. This special molecular structure makes silicone rubber have high thermal stability, oxidation resistance and weather resistance. The heat-resistant temperature range of silicone rubber is generally between 200°C and 300°C. The material of the bonding layer 1013 and the filler 103 is a thermoplastic elastomer TPE. TPE is a material that combines the properties of thermoplastics and elastomers. It has thermoplasticity and can be processed multiple times through heating and cooling cycles. During the heating process, TPE softens and becomes plastic, so that it can be used for shaping and processing. The softening temperature of general TPE is usually between 80°C and 90°C. The material of the sheath layer 105 is polyvinyl chloride. Before extruding the sheath layer 105 , the bonding layer 1013 of the first functional line 101 is heated and softened so that the bonding layer 1013 has a certain fluidity. The bonding layer 1013 is deformed by extruding it, and the bonding layer 1013 is squeezed out from between the functional lines to form a contact arrangement between the functional lines. At the same time, the bonding layer 1013 forms a filling 103 inside the shielding layer 104 .

[0042] The new energy vehicle cable in this embodiment is flatly arranged, which is convenient for wiring a large number of cable circuits in the limited space inside the car, saving space for cable use. The functional lines of this new energy vehicle cable are arranged in contact to form a compact core structure, which can improve the structural strength of the core part of the cable, and the filling 103 is used to reinforce the core combination structure. The filling 103 of this cable is obtained by extruding the bonding layer 1013 under heat and softening. The bonding layer 1013 is squeezed out from between the functional lines to obtain filling, and the functional lines can be filled fully, greatly reducing the situation of insufficient filling. The present invention obtains the filling 103 by presetting the thermoplastic bonding layer 1013 and softening and reprocessing the bonding layer 1013, thereby overcoming the problem of insufficient filling of the cable filler in the prior art by external extrusion and wrapping the core.

[0043] Example 2

[0044] The new energy vehicle cable in Example 1 needs to be prepared by corresponding new energy vehicle cable production equipment. In this embodiment, a wire arranging device for the production of new energy vehicle cables is proposed. The wire arranging device is used in conjunction with the production equipment of new energy vehicle cables to complete the production of the cable.

[0045] refer to Figure 2 and Figure 3 The production equipment of the new energy vehicle cable includes a wire unwinder 1, a first group of extrusion equipment 2, a second group of extrusion equipment 4, a wrapping equipment 5, a molding extrusion equipment 6 and a wire take-up device 9. The wire arrangement device includes an outer wire arrangement assembly and an inner wire arrangement assembly 7, and the outer wire arrangement assembly includes a first outer wire arrangement assembly 10, a second outer wire arrangement assembly 11, a third outer wire arrangement assembly 12 and a fourth outer wire arrangement assembly 13. The first outer wire arrangement assembly 10 is arranged on the feed side of the first group of extrusion equipment 2, and the first cooling trough 3 is arranged on the discharge side of the first group of extrusion equipment 2, and the first cooling trough 3 is used for cooling after extrusion. The second outer wire arrangement assembly 11 is arranged on the feed side of the second group of extrusion equipment 4, and another first cooling trough 3 is arranged on the discharge side of the second group of extrusion equipment 4, and this first cooling trough 3 is also used for cooling after extrusion. A third outer cable assembly 12 and a fourth outer cable assembly 13 are arranged between the second group of extrusion equipment 4 and the wrapping equipment 5. The third outer cable assembly 12 is located behind the first cooling trough 3, the fourth outer cable assembly 13 is located behind the third outer cable assembly 12, and the third outer cable assembly 12 is located in front of the wrapping equipment 5. The wrapping equipment 5 is located on the feeding side of the molding extrusion equipment 6, and the inner cable assembly 7 is arranged inside the molding extrusion equipment 6. A second cooling trough 8 is arranged on the discharge side of the molding extrusion equipment 6, and the second cooling trough 8 is used for cooling after extrusion.

[0046] refer to Figure 3 The first outer wire assembly 10 is used to support and separate the wire 1011 coming out of the wire release device 1. The first group of extrusion equipment includes a first extrusion head 21, and the first extrusion head 21 is used to extrude an insulating layer 1012 outside the wire 1011. The second outer wire assembly 11 is used to support and separate the first functional wire 101 after it comes out of the first group of extrusion equipment 2 and cools down.

[0047] refer to Figure 3The second group of extrusion equipment 4 includes a second extrusion head 41 and a third extrusion head 42. The second extrusion head 41 is used to extrude a bonding layer 1013 outside the insulation layer 1012 of the first functional line 101. The material of the bonding layer 1013 is a thermoplastic elastomer TPE. After the bonding layer 1013 forms a filling 103, the filling 103 of the TPE material can improve the bending performance and tensile performance of the cable. The third extrusion head 42 extrude a supporting layer 1021 outside the insulation layer 1012 of the first functional line 101 to obtain the second functional line 102. The third outer cable assembly 12 is used to support and separate the first functional line 101 and the second functional line 102 after they are cooled from the second group of extrusion equipment 4. The fourth outer cable assembly 13 is used to attach and combine the first functional line 101 with the bonding layer 1013 and the second functional line 102 to form a core group. A first wire pulley 14 is disposed between the third outer wire assembly 12 and the fourth outer wire assembly 13 . The first wire pulley 14 is used for guiding the first functional wire 101 and the second functional wire 102 .

[0048] The wrapping device 5 is used to wrap the shielding layer 104 around the outside of the core group, refer to Figure 4 After the wire core group is wrapped around the shielding layer 104, an inner space 106 is formed between the shielding layer 104 and the wire core group. The molding extrusion device 6 is used for extrusion molding of the sheath layer 105. The inner wiring assembly 7 is arranged inside the molding extrusion device 6. The inner wiring assembly 7 is used to extrude the wire core group in the horizontal direction. The preheating sleeve 64 is arranged at the wire inlet end of the molding extrusion device 6. The preheating sleeve 64 can be preheated before the wire core group enters the extrusion chamber of the molding extrusion device 6, so that the bonding layer 1013 outside the first functional line 101 is softened.

[0049] refer to Figure 2 and Figure 3 After the wire 1011 is released by the wire payer 1, it passes through the first wire arrangement of the first outer wire arrangement component 10, the first extrusion of the first group of extrusion equipment 2, cooling in the first cooling tank 3, the second wire arrangement of the second outer wire arrangement component 11, the second extrusion of the second group of extrusion equipment 4, cooling in the first cooling tank 3, the third wire arrangement of the third outer wire arrangement component 12, the fourth wire arrangement of the fourth outer wire arrangement component 13, the wrapping of the shielding layer 104 on the wrapping equipment 5, the fifth wire arrangement of the inner wire arrangement component 7 and the third extrusion of the molding extrusion equipment 6 and cooling in the second cooling tank 8 to obtain the cable, and the cable is finally taken up by the take-up device 9.

[0050] The first outer wiring assembly 10, the second outer wiring assembly 11 and the third outer wiring assembly 12 have the same structure. Figure 8 and Fig. 9The third outer cable assembly 12 includes a first base 121 and a wire-passing seat 122. The first base 121 is provided with guide plates 126 on both sides of the wire-passing seat 122. The guide plates 126 are used to limit the rotation of the wire-passing seat 122 and guide the wire-passing seat 122 in the horizontal and vertical directions. The first base 121 is provided with a horizontal slide 123. The interior of the slide 123 is provided with a first limit bracket 124. The first limit bracket 124 is slidably connected to the first base 121. The first limit bracket 124 is provided with a first positioning bolt 125. The first positioning bolt 125 penetrates the first limit bracket 124 and is rotatably connected to the first limit bracket 124. One end of the first positioning bolt 125 is rotatably connected to the wire-passing seat 122. A handle is provided at one end of the first positioning bolt 125. The first positioning bolt 125 is used to adjust the distance between the bottom surface of the wire-passing seat 122 and the first base 121. When the first base 121 needs to be moved, the first positioning bolt 125 is rotated so that the bottom surface of the wire-passing seat 122 is not in contact with the first base 121. The position of the wire-passing seat 122 is adjusted by moving the first limiting bracket 124. After the position adjustment is completed, the first positioning bolt 125 is rotated so that the bottom surface of the wire-passing seat 122 is in contact with the first base 121 to form a static friction limit between the wire-passing seat 122 and the first base 121.

[0051] A wire passing hole is provided on the wire passing seat 122, and the wire 1011, the first functional wire 101 and the second functional wire 102 can pass through the wire passing hole of the wire passing seat 122. The positions of the wire 1011, the first functional wire 101 and the second functional wire 102 can be arranged by moving the position of the wire passing seat 122, ensuring that the wire 1011 passes through the first extrusion head 21, and the first functional wire 101 passes through the second extrusion head 41 and the third extrusion head 42.

[0052] refer to Fig.10 and Fig.11 The fourth outer cable assembly 13 includes a second base 131, two guide balls 132 and an outer limiting plate 134. The outer limiting plate 134 is located above the two guide balls 132. The first functional line 101 and the second functional line 102 pass through the combined space between the outer limiting plate 134, the second base 131 and the two guide balls 132. The outer limiting plate 134 limits the first functional line 101 and the second functional line 102 in the vertical direction. The guide balls 132 push both sides of the first functional line 101 and the second functional line 102 in the horizontal direction, so that the first functional line 101 and the second functional line 102 are in contact and combined to form a wire core group.

[0053] The guide ball 132 is rotatably connected to the end of the second positioning bolt 133, the second positioning bolt 133 is threadedly connected to the second base 131, and the second positioning bolt 133 is used to adjust the horizontal position of the guide ball 132. The outer limiting plate 134 is connected to the upper part of the third positioning bolt 135 through the second limiting bracket 136, the third positioning bolt 135 is rotatably connected to the outer limiting plate 134, the bottom of the third positioning bolt 135 is threadedly connected to the limiting seat 137 at the bottom of the second base 131, and the third positioning bolt 135 is used to adjust the vertical position of the outer limiting plate 134. The guide ball 132 and the outer limiting plate 134 are combined to form a limit for the wire core group.

[0054] refer to Figure 5 The extrusion chamber of the molding extrusion device 6 includes a first chamber 61, a second chamber 62 and a preheating sleeve 64. The preheating sleeve 64, the first chamber 61 and the second chamber 62 are arranged in sequence in the direction of the cable entry. A first heating element is arranged inside the preheating sleeve 64. The first heating element can generate heat when powered on, such as an electric heating wire. When the wire core group passes through the preheating sleeve 64, since the bonding layer 1013 is a thermoplastic material, the heat emitted by the preheating sleeve 64 heats and softens the bonding layer 1013. The first chamber 61 and the second chamber 62 are connected, and the inner wiring assembly 7 is located inside the first chamber 61. The first chamber 61 is used to form the filling 103, and the second chamber 62 is used to extrude the sheath layer 105. The first chamber 61 is connected to an extrusion material pipe, which is used to connect the discharge port of an extruder (not shown) and the first chamber 61. After being extruded by the extruder, the molten extrudate enters the first chamber 61 and the second chamber 62 through the extrusion material pipe. The extrudate in the first chamber 61 is used to form an extrusion pressure outside the shielding layer 104, and the extrudate in the second chamber 62 forms a sheath layer 105 outside the wire core group.

[0055] refer to Figure 5 and Figure 6 The inner wire arrangement assembly 7 includes two second guide wheels 71 for limiting the horizontal direction of the wire core group and two inner limit plates 73 for limiting the vertical direction of the wire core group. The two second guide wheels 71 are located between the two inner limit plates 73, and the wire core group passes through the channel between the two second guide wheels 71 and the two inner limit plates 73. Among them, the second guide wheel 71 is connected to the molding extrusion equipment 6 through the first adjustment cylinder 72, and the first adjustment cylinder 72 is used to adjust the position of the second guide wheel 71; the inner limit plate 73 is connected to the molding extrusion equipment 6 through the second adjustment cylinder 74, and the second adjustment cylinder 74 is used to adjust the position of the inner limit plate 73. The second guide wheel 71 and the inner limit plate 73 are combined to form a position limit for the wire core group. A plurality of pressure relief holes 75 are provided on the inner limit plate 73, and the pressure relief holes 75 are used to connect the upper space and the lower space of the inner limit plate 73.

[0056] The molding extrusion device 6 is provided with a second heating element in the first chamber 61 and the second chamber 62. The second heating element can also generate heat when powered on. The second heating element is used to assist in heating the extrusion material to maintain the flow state of the extrusion material.

[0057] refer to Figure 6 After the core group enters the first chamber 61, the shielding layer 104 on the core group is wrapped and extruded by the molten extrudate. When the core group enters between the second guide wheels 71, the second guide wheels 71 extrude the core group inward from both sides in the horizontal direction. The functional wires are close to each other and stick to each other to form a compact core structure. The bonding layer 1013 between the functional wires is squeezed into the inner space 106 to form a filling 103. At the same time, the extrudate inside the first chamber 61 enters the inner limit plate 73 and the shielding layer 104 from the pressure relief hole 75 to form a third chamber 63. The extrudate extrude the shielding layer 104 at the third chamber 63 to form a depression in the shielding layer 104. The depression is used to adapt to the size change of the wrapping contour of the shielding layer 104 caused by the functional wires approaching each other. At the same time, the compressed depression of the shielding layer 104 can increase the fitting surface between the filler 103 and the shielding layer 104, reducing the probability of electromagnetic waves penetrating from the non-fitting part of the shielding layer 104, thereby reducing the leakage of the internal electromagnetic field and reducing the impact on other electrical components inside the car.

[0058] To limit the position deviation of the first functional line 101 between the inner limit plates 73, refer to Fig.12 and Fig.13 A limiting strip 76 can be provided on one side of the inner limiting plate 73, and the thickness of the limiting strip 76 corresponds to the thickness of the bonding layer 1013. The limiting strips 76 of the two inner limiting plates 73 are relatively arranged, and the limiting strip 76 is used to limit the movement of the first functional line 101 in the vertical direction, so as to keep the first functional line 101 and the second functional line 102 arranged in a line.

[0059] refer to Figure 7 The die of the second chamber 62 is used to extrude the sheath layer 105 , and the sheath layer 105 is cooled inside the second cooling tank 8 to obtain the target cable.

[0060] The combined working process of the cable production equipment and the cable arrangement device for new energy vehicles in this embodiment includes a preparation stage and a processing stage. The preparation stage includes steps 1 to 3, and the processing stage includes steps 4 to 8. The specific processing steps are as follows:

[0061] Step 1: Adjust the wire holders 122 of the first outer wire assembly 10, the second outer wire assembly 11, and the third outer wire assembly 12 to appropriate positions to ensure that the wire 1011 corresponding to the first functional wire 101 can pass through the first extrusion head 21 and the second extrusion head 41, and the wire 1011 corresponding to the first functional wire 101 can pass through the first extrusion head 21 and the third extrusion head 42;

[0062] Step 2: After the wires 1011 corresponding to the first functional line 101 and the second functional line 102 are released from the corresponding wire release device 1, they pass through the first outer wire assembly 10, the first group of extrusion equipment 2, the first first cooling tank 3, the second outer wire assembly 11, the second group of extrusion equipment 4, the second first cooling tank 3, and the third outer wire assembly 12 in sequence, and then the first functional line 101 and the second functional line 102 are placed between the upper outer limit plate 134 and the second base 131 of the fourth outer wire assembly 13 respectively, and by adjusting the second positioning bolt 133 and the third positioning bolt 135, the outer limit plate 134 and the guide ball 132 respectively limit the first functional line 101 and the second functional line 102;

[0063] After passing through the wrapping device 5, the wire core group passes through the molding extrusion device 6, and is taken up by the wire take-up device 9 from the die of the molding extrusion device 6. When passing through the inner wire arrangement assembly 7, the second adjustment cylinder 74 is used to make the two inner limit plates 73 limit the wire core group in the vertical direction, and then the first adjustment cylinder 72 is used to make the second guide wheel 71 limit the wire core group in the horizontal direction. The distance between the two second guide wheels 71 is the target width of the contact arrangement between the functional wires in the wire core group.

[0064] Step 3: the wire pay-off device 1 continues to pay out the wire, and the wire take-up device 9 continues to take up the wire, so as to keep the wire core running continuously;

[0065] Step 4: The wire 1011 passes through the first group of extrusion equipment 2, and the first extrusion head 21 extrude the insulation layer 1012 on the outside of the wire 1011 to obtain the first functional wire 101. After extrusion, the first functional wire 101 is cooled in the first first cooling tank 3;

[0066] Step 5, the first functional line 101 passes through the second group of extrusion equipment 4, the second extrusion head 41 extrude the bonding layer 1013 outside the insulating layer 1012 of the first functional line 101, and the third extrusion head 42 extrude the supporting layer 1021 outside the insulating layer 1012 of the first functional line 101 to obtain the second functional line 102, and the bonding layer 1013 and the supporting layer 1021 are cooled in the second first cooling tank 3;

[0067] Step 6: The fourth outer cable assembly 13 combines the first functional cable 101 with the bonding layer 1013 and the second functional cable 102 to form a cable core group;

[0068] Step 7, the wire core group passes through the wrapping device 5, and the wrapping device 5 wraps the shielding layer 104 around the outside of the wire core group;

[0069] Step eight, the wire core group with the shielding layer 104 enters the preheating sleeve 64 of the molding extrusion device 6, and the heat emitted by the preheating sleeve 64 heats and softens the bonding layer 1013;

[0070] Step 9, Reference Figure 6 The wire core group enters between the second guide wheels 71 of the first chamber 61, and the second guide wheels 71 squeeze the wire core group inward from both sides in the horizontal direction. The functional wires are close to each other and stick to each other to form a compact wire core structure. The bonding layer 1013 between the functional wires is squeezed into the inner space 106 to form a filling 103. At the same time, the extruded material inside the first chamber 61 enters from the pressure relief hole 75 between the inner limit plate 73 and the shielding layer 104 to form a third chamber 63. The extruded material squeezes the shielding layer 104 at the third chamber 63 to form a depression in the shielding layer 104, and the depression is used to adapt to the size change of the wrapping contour of the shielding layer 104 caused by the functional wires being close to each other.

[0071] Step 10, Reference Figure 7 The wire core group comes out from the die of the second chamber 62, a sheath layer 105 is formed on the wire core group, and the target cable is obtained after being cooled in the second cooling tank 8.

[0072] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cable arrangement device for the production of new energy vehicle cables, the new energy vehicle cables comprising a plurality of functional wires arranged in a line, the functional wires comprising a first functional wire located in the middle and second functional wires located on both sides, the functional wires are arranged in contact with each other to form a wire core group, the outside of the wire core group is sequentially wrapped with a shielding layer and a sheath layer, a filling is arranged between the shielding layer and the wire core group, characterized in that: The cable arrangement device is used in conjunction with the production equipment of the new energy vehicle cable, which includes a second group of extrusion equipment for respectively extruding a bonding layer and a supporting layer outside the first functional line, a wrapping equipment for wrapping a shielding layer, and a molding extrusion equipment for extruding a sheath layer, wherein the molding extrusion equipment includes a preheating sleeve for heating and softening the bonding layer, a first chamber for forming a filling, and a second chamber for extruding a sheath layer; The wire arrangement device comprises an outer wire arrangement component and an inner wire arrangement component; The outer wiring assembly includes a fourth outer wiring assembly, the fourth outer wiring assembly is used to contact and combine the second functional wire and the first functional wire having the bonding layer to form a wire core group, after the wire core group is wrapped with a shielding layer, an inner space is formed between the shielding layer and the wire core group; The inner wiring assembly is located inside the first chamber, and includes two second guide wheels for limiting the wire core group in the horizontal direction and two inner limit plates for limiting the wire core group in the vertical direction, and the two second guide wheels are located between the inner limit plates, and the two second guide wheels are used to extrude from both sides of the wire core group toward the middle of the wire core group so that the softened bonding layer is squeezed out and filled between the functional wires.

2. The cable arrangement device according to claim 1, characterized in that: The inner limit plate is provided with a plurality of pressure relief holes penetrating the inner limit plate, the pressure relief holes are used for the circulation of the extrudate inside the first chamber, the extrudate enters from the pressure relief holes into a third chamber between the inner limit plate and the shielding layer, the extrudate squeezes the shielding layer in the third chamber to form a depression in the shielding layer, the depression is used to accommodate the size change of the shielding layer wrapping contour caused by the functional lines being close to each other.

3. The cable arrangement device according to claim 2, characterized in that: The production equipment of the new energy vehicle cable also includes a first group of extrusion equipment for extruding an insulating layer, and the outer cable assembly also includes a first outer cable assembly, a second outer cable assembly and a third outer cable assembly; the first outer cable assembly is arranged on the feed side of the first group of extrusion equipment, the second outer cable assembly is arranged on the feed side of the second group of extrusion equipment, and the third outer cable assembly and the fourth outer cable assembly are arranged between the second group of extrusion equipment and the wrapping equipment; The functional line passes through the first outer wire assembly, the first group of extrusion equipment, the second outer wire assembly, the second group of extrusion equipment, the third outer wire assembly, the fourth outer wire assembly, the wrapping equipment, the molding extrusion equipment and the inner wire assembly arranged inside the molding extrusion equipment.

4. The cable arrangement device according to claim 3, characterized in that: The structures of the first outer cable assembly, the second outer cable assembly and the third outer cable assembly are the same, the third outer cable assembly includes a first base and a cable passing seat, the first base is provided with guide plates on both sides of the cable passing seat, the first base is provided with a horizontal slide groove, a first limiting bracket is provided inside the slide groove, the first limiting bracket is slidably connected to the first base, a first positioning bolt is provided on the first limiting bracket, the first positioning bolt passes through the first limiting bracket and is rotatably connected to the first limiting bracket, and one end of the first positioning bolt is rotatably connected to the cable passing seat.

5. The cable arrangement device according to claim 3, characterized in that: The fourth outer cable assembly includes a second base, two guide balls and an outer limit plate, the outer limit plate is located above the guide ball, and the first functional line and the second functional line pass through the combined space between the outer limit plate, the second base and the two guide balls to form a cable core group; The guide ball is connected to the second base through a second positioning bolt, and the outer limiting plate is connected to the second base through a third positioning bolt. The upper part of the third positioning bolt is provided with a second limiting bracket for limiting the outer limiting plate, and the bottom of the third positioning bolt is threadedly connected to the limiting seat at the bottom of the second base.

6. A new energy vehicle cable, characterized in that: The cable is produced by the cooperation of the cable arrangement device described in any one of claims 3 to 5 and the production equipment of new energy vehicle cables.

7. The new energy vehicle cable according to claim 6, characterized in that: The cable includes a plurality of functional wires arranged in a line, and the functional wires are arranged in contact with each other to form a wire core group. The functional wires include a first functional wire located in the middle and second functional wires located on both sides. The second functional wire is formed by wrapping a supporting layer around the first functional wire. The outside of the wire core group is wrapped with a shielding layer and a sheath layer in sequence. A filling is provided between the shielding layer and the wire core group. The filling is formed by heating, softening and extruding a bonding layer wrapped around the outside of the first functional wire in an inner space. The inner space is a strip-shaped cavity formed between the shielding layer and the wire core group. The bonding layer is squeezed out from between the functional wires to form a contact arrangement between the functional wires.

8. The new energy vehicle cable according to claim 7, characterized in that: The bonding layer is a thermoplastic material.

9. The new energy vehicle cable according to claim 8, characterized in that: The first functional line includes a conductive wire and an insulating layer wrapped around the conductive wire.

10. The new energy vehicle cable according to claim 9, characterized in that: The insulating layer is made of polyimide, and the supporting layer is made of silicone rubber.

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