High-voltage cable for new energy special vehicle

Abstract

The invention relates to the technical field of high-voltage cables, and particularly provides a high-voltage cable for a new energy special vehicle, which comprises a connecting cable, the connecting cable is used for connecting electronic elements in the vehicle, the connecting cable is provided with a connector, the connector is provided with a copper nose, the copper nose is connected with a spiral steel belt, and the other end of the spiral steel belt is connected with a clamping sleeve. The copper nose is clamped on the connecting cable through the spiral steel belt and the clamping sleeve, and the spiral steel belt is tightened at the periphery of an exposed wire of the connecting cable through rotation of the copper nose relative to the clamping sleeve, so that the connecting effect of the copper nose and the connecting cable is better, and the clamping sleeve is deformed through other tools, so that the copper nose is prevented from being damaged. Therefore, the connection between the copper nose and the connecting cable is prevented from loosening due to the relative rotation between the copper nose and the connecting sleeve, good clamping force can be kept during long-time clamping, and the copper nose is not easy to slip off.

Description

Technical Field

[0001] The present invention relates to the technical field of high-voltage cables, and in particular to a high-voltage cable for new energy special vehicles. Background Art

[0002] High-voltage cables for new energy special vehicles are high-performance cables designed specifically for new energy vehicles (such as electric vehicles, hybrid vehicles) and other new energy special vehicles (such as electric buses, electric logistics vehicles, etc.). They are responsible for connecting the high-voltage battery packs, inverters, motors and charging systems in the vehicles, transmitting high-voltage electrical energy and ensuring the stable operation of the vehicle's electric drive system.

[0003] For example, Chinese patent CN111883953B discloses a connecting wire with a copper nose connector, which includes a connecting wire with an insulating layer, a plurality of exposed thin copper wires are provided at both ends of the connecting wire, and a copper nose is provided on the outside of the thin copper wires; the copper nose includes a connecting part and a wire fixing part, and a wire clamping rod is provided at one end of the wire fixing part away from the connecting part, and when fixing, the wire clamping rod is inserted into the plurality of thin copper wires; pressure plates are also provided on both sides of the wire fixing part, and when fixing, the pressure plates are wrapped around the outside of the thin copper wires to clamp them from both sides of the wire clamping rod.

[0004] However, in the above scheme, the copper wire is unevenly stressed, and during the long-term clamping process, the clamping effect of the copper nose on the wire core will be reduced, which is easy to cause slippage. Summary of the invention

[0005] Based on this, it is necessary to provide a high-voltage cable for new energy special vehicles to address the current problems of uneven force on the copper wire and poor clamping effect of the copper nose.

[0006] The above purpose is achieved through the following technical solutions: A high-voltage cable for new energy special vehicles, comprising: A connecting cable, wherein one end of the connecting cable has a connector, and the internal wires of the connecting cable at the connector are exposed; A copper nose, which can be clamped on the outer periphery of the exposed wire of the connector; A clamping sleeve, one end of which is rotatably connected to the copper nose, and the clamping sleeve is sleeved on the outer periphery of the exposed wire of the connector; A spiral steel belt is fixedly connected to one end of the copper nose connected to the clamping sleeve, and the end of the spiral steel belt away from the copper nose is connected to the peripheral wall of the clamping sleeve. The spiral steel belt is sleeved on the outer periphery of the exposed wire of the connector, and the copper nose can drive the spiral steel belt to tighten when it rotates around its own axis.

[0007] Furthermore, two semi-annular grooves are provided on the inner circumference of one end of the clamping sleeve, and a first interval is provided between the ends of the two semi-annular grooves. Two semi-annular convex rings are provided on the outer circumference of the copper nose, and the length of the semi-annular convex rings is greater than the length of the first interval. A second interval is provided between the two semi-annular convex rings, and the two semi-annular convex rings slide in the two semi-annular grooves.

[0008] Furthermore, the first interval position on the clamping sleeve can be deformed. After the copper nose is rotated to a preset position, the two semi-annular convex rings are located in two semi-annular grooves, and the first interval position on the clamping sleeve is deformed to prevent the clamping sleeve from rotating.

[0009] Furthermore, the spiral steel belt is cone-shaped as a whole, the small end of the spiral steel belt is connected to the copper nose, and the large end of the spiral steel belt is connected to the clamping sleeve.

[0010] Furthermore, a sliding rod is fixedly provided on one end of the spiral steel belt away from the copper nose, a sliding hole is opened on the peripheral wall of the clamping sleeve, the sliding hole extends radially along the clamping sleeve, and the sliding rod is slidably arranged in the sliding hole.

[0011] Furthermore, a conductive rod is fixedly provided on one end of the copper nose close to the exposed wire of the connector, and the conductive rod can be inserted into the exposed wire of the connector.

[0012] Furthermore, the conductive rod is eccentrically arranged on one end of the copper nose close to the exposed wire of the connector.

[0013] Furthermore, the connecting cable has multiple layers, which are, from outside to inside, an outer sheath, an aluminum-plastic composite tape shielding layer, a tinned braided shielding layer, an insulating tape, a filling insulating layer, a conductor tape and a wire.

[0014] Furthermore, a connecting piece is provided on the copper nose, and the connecting piece is perpendicular to the surface of the copper nose.

[0015] Furthermore, a connecting hole is provided on the connecting sheet.

[0016] The beneficial effects of the present invention are: The present invention clamps the copper nose on the connecting cable through a spiral steel belt and a clamping sleeve, and tightens the spiral steel belt around the exposed outer periphery of the wire of the connecting cable by rotating the copper nose relative to the clamping sleeve, so that the connection effect between the copper nose and the connecting cable is better, and the clamping sleeve is deformed by other tools, thereby preventing the copper nose and the connecting sleeve from rotating relative to each other and causing the connection between the copper nose and the connecting cable to become loose, and a good clamping force can be maintained even when clamped for a long time, and it is not easy to slip.

[0017] The present invention prevents the exposed wire from breaking between the copper nose and the connecting cable by arranging the spiral steel belt into a cone shape, with the small end of the cone-shaped spiral steel belt close to the copper nose and the large end of the spiral steel belt close to the connecting cable.

[0018] The present invention eccentrically arranges a conductive rod on the end face of the copper nose. The conductive rod revolves along with the rotation of the copper nose. The conductive rod stirs the inside of the exposed wire, thereby disrupting the inside of the exposed wire and preventing the formation of a support area inside the exposed wire. As a result, when the spiral steel belt tightens the exposed wire, the wire can be attached to the outer periphery of the conductive rod, thereby improving the electrical connection strength between the copper nose and the connecting cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of a high-voltage cable for a new energy special vehicle provided by an embodiment of the present invention; Figure 2 An exploded view of a high-voltage cable for a new energy special vehicle provided by an embodiment of the present invention; Figure 3 for Figure 2 A partial enlarged view of part A of a high-voltage cable for new energy special vehicles provided in an embodiment; Figure 4 for Figure 2 A partial enlarged view of part B of a high-voltage cable for new energy special vehicles provided in an embodiment; Figure 5 for Figure 1 A left view of a high voltage cable for a new energy special vehicle provided in an embodiment; Figure 6 for Figure 5 A cross-sectional view along XX of a high-voltage cable for a new energy special vehicle provided in an embodiment; Figure 7 for Figure 6 A partially enlarged view of part C of the high-voltage cable for new energy special vehicles provided in one embodiment.

[0020] in: 100, connecting cable; 110, outer skin; 120, aluminum-plastic composite tape shielding layer; 130, tinned braided shielding layer; 140, insulating tape; 150, filling insulating layer; 160, conductor tape; 170, wire; 200, a clamping sleeve; 210, a semi-annular sliding groove; 220, a first interval; 230, a sliding hole; 240, a spiral steel belt; 250, a sliding rod; 300, copper nose; 310, connecting piece; 320, connecting hole; 330, semi-annular convex ring; 340, second spacer; 350, conductive rod. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0022] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0023] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0024] Refer to the following Figure 1-Figure 7 To describe a high-voltage cable for new energy special vehicles provided by the present invention.

[0025] A high-voltage cable for new energy special vehicles is suitable for electrical connections of new energy vehicles, including a connecting cable 100. The connecting cable 100 can be connected to various electronic components inside the new energy special vehicle to transmit signals or currents. A connector is provided on one end of the connecting cable 100. In order to facilitate the connection of other electronic components at the connector, the wire 170 inside the connecting cable 100 at the connector is exposed. A copper nose 300 is connected to the connector. The copper nose 300 is disc-shaped. A connecting piece 310 is vertically arranged on one end face of the copper nose 300. A connecting hole 320 is opened on the connecting piece 310. The connecting hole 320 is used to connect other wires 170 or to be fixed and connected to other positions.

[0026] The copper nose 300 in the prior art is generally clamped on the exposed wire 170 by a clamping ring or a ferrule. However, the clamping ring or the ferrule may become loose after long-term use after clamping, thereby reducing the connection strength of the connecting cable 100 and affecting the transmission of signals or currents of the connecting cable 100.

[0027] Therefore, the present invention rotatably sets a clamping sleeve 200 on the copper nose 300, one end of the clamping sleeve 200 is rotatably connected to the copper nose 300, and the clamping sleeve 200 is sleeved on the outer periphery of the exposed wire 170. When the copper nose 300 rotates relative to the clamping sleeve 200, the clamping sleeve 200 can clamp the exposed wire 170, and after the clamping sleeve 200 clamps the exposed wire 170, the copper nose 300 can no longer rotate relative to the clamping sleeve 200, so that the copper nose 300 will not lose contact with the exposed wire 170, thereby avoiding affecting the model of the connecting cable 100 or the transmission of current.

[0028] Specifically, a spiral steel belt 240 is fixedly connected to one end of the copper nose 300 in this embodiment that is rotatably connected to the clamping sleeve 200, and the end of the spiral steel belt 240 away from the copper nose 300 is connected to the peripheral wall of the clamping sleeve 200. The spiral steel belt 240 is located inside the clamping sleeve 200 and on the outer periphery of the exposed wire 170. When the copper nose 300 rotates around its own axis, the clamping sleeve 200 is stationary at this time. Since one end of the spiral steel belt 240 is connected to the clamping sleeve 200 and the other end of the spiral steel belt 240 is connected to the copper nose 300, When the copper nose 300 rotates around its own axis, the spiral steel belt 240 can be tightened, so that the spiral steel belt 240 is tightly wrapped around the outer periphery of the exposed wire 170, so that the copper nose 300 is tightly connected to the outer periphery of the exposed wire 170 through the spiral steel belt 240 and the clamping sleeve 200. When the spiral steel belt 240 is tightened, the rotation of the copper nose 300 is stopped, and the clamping sleeve 200 is squeezed by other tools so that the clamping sleeve 200 cannot rotate relative to the copper nose 300, that is, the copper nose 300 can no longer rotate, thereby preventing the spiral steel belt 240 from loosening.

[0029] It should be noted that using a spiral steel belt 240 to tighten the exposed wire 170 can make the force on the wire 170 more uniform, and a conductive coating is provided on the surface of the spiral steel belt 240, which can contact the exposed wire 170 to transmit current or signal to the copper nose 300.

[0030] More specifically, in order to realize the function that the copper nose 300 can no longer rotate relative to the clamping sleeve 200 after the clamping sleeve 200 is squeezed, two semi-annular grooves 210 are provided on the inner circumference of one end of the clamping sleeve 200. Figure 4As shown, the two semi-annular chutes 210 are symmetrically arranged, and the two semi-annular chutes 210 are not connected but have a first interval 220. Specifically, the two ends of the two semi-annular chutes 210 have a first interval 220. Two semi-annular convex rings 330 are arranged on the outer periphery of the copper nose 300. The two semi-annular convex rings 330 are symmetrically arranged on the copper nose 300, as shown in FIG. Figure 4 As shown, the two semi-annular protrusions 330 are not connected, but there is a second gap 340 between the two. When the two semi-annular protrusions slide in the two semi-annular grooves 210, the copper nose 300 can rotate around its own axis, and the length of the semi-annular protrusion 330 in this embodiment is greater than the length of the first gap 220, so as to avoid the phenomenon of the two semi-annular protrusions 330 being separated when sliding in the two semi-annular grooves 210.

[0031] It should be noted that, in order to facilitate the rotational installation of the clamping sleeve 200 on the copper nose 300, the clamping sleeve 200 can be set as two semi-cylinders. When the two semi-cylinders are combined, the two semi-annular convex rings 330 are first aligned with the two semi-annular grooves 210, and then the two semi-cylinders are fixed after alignment, so that the two semi-annular convex rings 330 can be located in the two semi-annular grooves 210, and when the spiral steel belt 240 on the outer periphery of the bare wire 170 has been tightly wound around the outer periphery of the bare wire 170, the two semi-annular convex rings 330 are adjusted to be located in the two semi-annular grooves 210. At this time, the first interval 220 and the second interval 340 are in an aligned state, and other tools are used to squeeze the first interval 220 part of the clamping sleeve 200, so that this part is deformed, specifically, the peripheral wall of the clamping sleeve 200 at this location is recessed inward, and the recess is just located at the position of the second interval 340, so that the space at the position of the second interval 340 is occupied by the recessed peripheral wall of the clamping sleeve 200, thereby limiting the movement of the two semi-annular convex rings 330 in the two semi-annular grooves 210, thereby limiting the relative rotation of the copper nose 300 and the clamping sleeve 200.

[0032] It can be understood that the copper nose 300 is limited to rotate by squeezing the clamping sleeve 200 to deform. The force for clamping the exposed wire 170 in this embodiment is along the circumferential direction of the clamping sleeve 200, and limits the relative rotation of the clamping sleeve 200 and the copper nose 300. Compared with directly squeezing the clamping sleeve 200 in the prior art, the force for clamping the exposed wire 170 after the clamping sleeve 200 is deformed is along the radial direction of the clamping sleeve 200, and the only limitation of the clamping sleeve 200 in the radial direction is its own deformation, without any other limitations. Therefore, the method of clamping the exposed wire 170 in this embodiment is better than the method of clamping the exposed wire 170 only by squeezing deformation in the prior art, and the contact between the exposed wire 170 and the copper nose 300 in this embodiment is more complete, thereby improving the transmission efficiency of signals or currents.

[0033] In a further embodiment, the overall shape of the spiral steel belt 240 of the present invention is not cylindrical but conical, and the small end of the spiral steel belt 240 is fixedly connected to the copper nose 300, and the large end of the spiral steel belt 240 is away from the copper nose 300 and connected to the clamping sleeve 200. The tapered spiral steel belt 240 has different forces when wound around the bare wire 170 at different diameter positions. The small end of the spiral steel belt 240 has the greatest force on the bare wire 170, so that the bare wire 170 at this location is connected more tightly, while the large end of the spiral steel belt 240 has a smaller force on the bare wire 170, so that the outer periphery of the bare wire 170 is subjected to a gradually increasing force, and the bare wire 170 is subjected to the greatest force near the copper nose 300. When the copper nose 300 and the connecting cable 100 are subjected to tension, The copper nose 300 and the connecting cable 100 can be kept away from each other. If the winding strength of the spiral steel belt 240 on the periphery of the exposed wire 170 is the same, the exposed wire 170 will be subjected to a large tensile force and the part of the spiral steel belt 240 that is wound will break. The winding strength of the spiral steel belt 240 on the periphery of the exposed wire 170 gradually decreases from close to the copper nose 300 to close to the connecting cable 100, so that the spiral steel belt 240 can play a buffering role when the copper nose 300 and the connecting cable 100 are subjected to a large force and move away from each other.

[0034] It should be noted that since the spiral steel belt 240 near the copper nose 300 has the greatest winding force on the exposed wire 170, and the winding force of the spiral steel belt 240 on the exposed wire 170 gradually decreases as it is closer to the connecting cable 100, when the copper nose 300 and the connecting cable 100 move away from each other, the spiral steel belt 240 near one end of the copper nose 300 is equivalent to being fixedly connected to the exposed wire 170, while the spiral steel belt 240 near the connecting cable 100 can move axially relative to the exposed wire 170, thereby playing a buffering role.

[0035] Specifically, to achieve the connection between the clamping sleeve 200 and the spiral steel belt 240, as Figure 4 and Figure 7 As shown, a slide rod 250 is fixedly arranged on one end of the spiral steel belt 240 away from the copper nose 300, and a slide hole 230 is opened on the peripheral wall of the clamping sleeve 200, the slide hole 230 extends along the radial direction of the clamping sleeve 200, and the slide rod 250 is slidably inserted in the slide hole 230. When the copper nose 300 rotates around its own axis, one end of the spiral steel belt 240 is driven to rotate by the copper nose 300, and the other end is connected to the clamping sleeve 200 through the slide rod 250, so that the spiral steel belt 240 can be tightened and then tightly wrapped around the outer periphery of the exposed wire 170 to connect the wire 170.

[0036] In a further embodiment, in order to improve the conductivity between the copper nose 300 and the connecting cable 100, a conductive rod 350 is fixedly arranged on one end face of the copper nose 300 close to the connecting cable 100, and the conductive rod 350 is perpendicular to the end face of the copper nose 300. The conductive rod 350 is inserted into the exposed wire 170 when the copper nose 300 and the exposed wire 170 are connected, so that when the spiral steel belt 240 tightens the exposed wire 170, the exposed wire 170 can be tightly attached to the outer periphery of the conductive rod 350, thereby improving the electrical connection strength between the exposed wire 170 and the copper nose 300.

[0037] In a further embodiment, the conductive rod 350 of the present invention is eccentrically arranged on the end face of the copper nose 300, and the conductive rod 350 revolves along with the rotation of the copper nose 300. When the conductive rod 350 revolves, it can stir the inside of the exposed wire 170, thereby breaking up the inside of the exposed wire 170, and avoiding the formation of a support area inside the exposed wire 170 when the spiral steel belt 240 is tightened. If a support area is formed, the conductive rod 350 will not be able to evenly contact the exposed wire 170, thereby affecting the electrical connection between the conductive rod 350 and the wire 170. The support area is formed because the cylindrical exposed wires 170 are evenly arranged, and the spiral steel belt 240 on the outer periphery of the exposed wires 170 evenly applies pressure to the wires 170, so a support area is easily formed on the inner periphery of the exposed wires 170, just like an egg shell that is not easy to break when pressure is evenly applied, and when the shell is subjected to uneven force, the support area will be broken. The eccentric setting of the conductive rod 350 in this embodiment can disrupt the evenly distributed structure inside the exposed wire 170, thereby avoiding the formation of a support area, and making the exposed wire 170 evenly contact the conductive rod 350 when the spiral steel belt 240 is tightened, thereby improving the electrical connection strength between the wire 170 and the conductive rod 350.

[0038] Specifically, the connecting cable 100 of the present invention has multiple layers, such as Figure 3As shown, from outside to inside are the outer skin 110, the aluminum-plastic composite tape shielding layer 120, the tinned braided shielding layer 130, the insulating tape 140, the filling insulating layer 150, the conductor tape 160 and the wire 170, wherein the outer skin 110 is usually made of waterproof, corrosion-resistant and high-temperature resistant materials, such as polyethylene (PE) or polyvinyl chloride (PVC), and its function is to protect the internal structure from the influence of the external environment, prevent physical damage, chemical corrosion and waterproof, etc., and increase the durability and environmental resistance of the connecting cable 100; the main function of the aluminum-plastic composite tape shielding layer 120 is to prevent electromagnetic interference (EMI) and radio frequency interference (RFI). The connecting cable 100 will generate an electromagnetic field when working. This layer of shielding tape can effectively reduce interference and prevent signal leakage or external electromagnetic waves from interfering with the power system; the tinned braided shielding layer 130 is mainly to enhance the electromagnetic shielding effect and improve the anti-interference ability. The tinned copper wire helps to improve the durability Corrosion and conductivity, this shielding layer ensures higher electrical safety, especially in high-voltage environments to prevent the influence of electric and magnetic fields; the insulating tape 140 is usually used to isolate the conductor from other layers to prevent current leakage and arc generation. It can also ensure that there is no short circuit between the conductors and maintain the stability of power transmission; the role of the filling insulation layer 150 is to fill the gaps, increase the tightness of the structure, ensure the integrity of the shape of the connecting cable 100, and enhance the overall mechanical strength to avoid loose cable core structure. It can also further enhance the protection against the external environment; the conductor tape 160 helps to effectively isolate the conductor inside the connecting cable 100 from other insulating layers. At the same time, it also plays a protective role, reduces mechanical damage, and prevents corrosion and oxidation of the conductor; the wire 170 is the main conductive part of the connecting cable 100. Its high conductivity can ensure the efficient transmission of power signals, and it has strong tensile strength and good corrosion resistance.

[0039] The specific installation process of a high-voltage cable for a new energy special vehicle provided by the present invention is described in combination with the above embodiments: First, the clamping sleeve 200 is sleeved on the outer circumference of the spiral steel belt 240, and the sliding rod 250 on the spiral steel belt 240 is inserted into the sliding hole 230 of the clamping sleeve 200. Then, the spiral steel belt 240 passes through the outer circumference of the exposed wire 170, and the conductive rod 350 on the copper nose 300 is inserted into the exposed wire 170. Finally, the copper nose 300 is rotated so that the copper nose 300 rotates relative to the clamping sleeve 200. The copper nose 300 drives one end of the spiral steel belt 240 to rotate, and the other end of the spiral steel belt 240 is connected to the clamping sleeve 200 through the sliding rod 250 and the sliding hole 230. When the copper nose 300 rotates, the conductive rod 350 fixedly connected to the copper nose 300 rotates with the movement of the copper nose 300, and the conductive rod 350 can stir the inside of the exposed wire 170 to disrupt the internal The distribution of the conductor 170, and the spiral steel belt 240 is constantly tightened, thereby winding the exposed conductor 170, so that the exposed conductor 170 is tightly fitted to the outer periphery of the conductive rod 350. After the spiral steel belt 240 is tightened, the rotation of the copper nose 300 is stopped, and the two semi-annular convex rings 330 on the copper nose 300 are adjusted to be located in the two semi-annular grooves 210 on the clamping sleeve 200. Finally, other tools are used to squeeze and deform the two first intervals 220 on the clamping sleeve 200, so that the two first intervals 220 are recessed inwardly to limit the rotation of the two semi-annular convex rings 330, thereby limiting the relative rotation of the copper nose 300 and the clamping sleeve 200, so that the spiral steel belt 240 cannot be detached from the winding of the exposed conductor 170, thereby improving the connection strength between the copper nose 300 and the connecting cable 100.

[0040] Furthermore, since the spiral steel belt 240 is tapered as a whole, and the small end of the spiral steel belt 240 is close to the copper nose 300, and the large end of the spiral steel belt 240 is close to the connecting cable 100, when the spiral steel belt 240 is tightened, the winding force of the spiral steel belt 240 close to the end of the copper nose 300 is greater, while the winding force of the spiral steel belt 240 close to the end of the connecting cable 100 gradually decreases, so that when the copper nose 300 and the connecting cable 100 move away from each other, the tapered spiral steel belt 240 can play a buffering role and prevent the exposed wire 170 from breaking.

[0041] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A high voltage cable for new energy special vehicles, characterized in that: include: A connecting cable, wherein one end of the connecting cable has a connector, and the internal wires of the connecting cable at the connector are exposed; A copper nose, which can be clamped on the outer periphery of the exposed wire of the connector; A clamping sleeve, one end of which is rotatably connected to the copper nose, and the clamping sleeve is sleeved on the outer periphery of the exposed wire of the connector; A spiral steel belt is fixedly connected to one end of the copper nose connected to the clamping sleeve, and the end of the spiral steel belt away from the copper nose is connected to the peripheral wall of the clamping sleeve. The spiral steel belt is sleeved on the outer periphery of the exposed wire of the connector, and the copper nose can drive the spiral steel belt to tighten when it rotates around its own axis.

2. The high-voltage cable for new energy special vehicles according to claim 1, characterized in that: Two semi-annular grooves are provided on the inner circumference of one end of the clamping sleeve, and a first interval is provided between the ends of the two semi-annular grooves. Two semi-annular convex rings are provided on the outer circumference of the copper nose, and the length of the semi-annular convex rings is greater than the length of the first interval. A second interval is provided between the two semi-annular convex rings, and the two semi-annular convex rings slide in the two semi-annular grooves.

3. The high-voltage cable for new energy special vehicles according to claim 2, characterized in that: The first interval position on the clamping sleeve can be deformed. After the copper nose is rotated to a preset position, the two semi-annular convex rings are located in two semi-annular grooves, and the first interval position on the clamping sleeve is deformed to prevent the clamping sleeve from rotating.

4. The high-voltage cable for new energy special vehicles according to claim 1, characterized in that: The spiral steel belt is cone-shaped as a whole, the small end of the spiral steel belt is connected to the copper nose, and the large end of the spiral steel belt is connected to the clamping sleeve.

5. The high-voltage cable for new energy special vehicles according to claim 1, characterized in that: A sliding rod is fixedly arranged on one end of the spiral steel belt away from the copper nose, a sliding hole is opened on the peripheral wall of the clamping sleeve, the sliding hole extends along the radial direction of the clamping sleeve, and the sliding rod is slidably arranged in the sliding hole.

6. The high-voltage cable for new energy special vehicles according to claim 1, characterized in that: A conductive rod is fixedly arranged on one end of the copper nose close to the exposed wire of the connector, and the conductive rod can be inserted into the exposed wire of the connector.

7. The high-voltage cable for new energy special vehicles according to claim 6, characterized in that: The conductive rod is eccentrically arranged on one end of the copper nose close to the exposed wire of the connector.

8. The high-voltage cable for new energy special vehicles according to claim 1, characterized in that: The connecting cable has multiple layers, which are, from outside to inside, an outer sheath, an aluminum-plastic composite tape shielding layer, a tinned braided shielding layer, an insulating tape, a filling insulating layer, a conductor tape and a wire.

9. The high-voltage cable for new energy special vehicles according to claim 1, characterized in that: The copper nose is provided with a connecting piece, and the connecting piece is perpendicular to the surface of the copper nose.

10. The high-voltage cable for new energy special vehicles according to claim 9, characterized in that: The connecting piece is provided with a connecting hole.

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