High-voltage transmission cable for vehicle connection

Abstract

The utility model relates to the technical field of vehicle high-voltage transmission cables, and provides a high-voltage transmission cable for vehicle connection, which comprises a braided rope for ensuring the tensile property of the cable, and a buffer sleeve and a sealing sleeve arranged outside the braided rope, and the buffer sleeve and the sealing sleeve are combined to form a movable cavity for improving the flexibility of the cable; the outer insulating layer is arranged outside the sealing sleeve and wraps the conductor; the buffering sleeve and the sealing sleeve in the cable form a buffering groove, so that the toughness and the flexibility of the cable are enhanced, and the cable is convenient to arrange, disassemble and assemble. And the conductor is coated with the anti-oxidation coating, so that oxidation, moisture and acid gas erosion are prevented, and the service life is prolonged. And the braided armor layer is combined with the microporous membrane, so that mechanical protection, electromagnetic shielding and waterproof and moistureproof performances are provided, and the durability of the cable is improved. The inner sheath is made of high-temperature-resistant polyvinyl chloride and aramid fibers, so that the tensile strength and the wear resistance are enhanced, and the outer sheath is made of a wear-resistant, oil-resistant and acid and alkali-resistant polyurethane material, so that the reliability and the physical performance of the cable in a severe environment are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of vehicle high voltage transmission cable, more specifically, especially relates to a vehicle connection high voltage transmission cable. BACKGROUND

[0002] The vehicle high voltage transmission cable is mainly used in electric vehicles (EVs), hybrid electric vehicles (HEVs) and other electrified vehicles, for transmitting high voltage current to drive electric motors, charging systems and batteries. It is a key component in the vehicle electrical system, ensuring efficient and safe transmission of electrical energy from the battery to all parts that require high voltage power support;

[0003] The existing high voltage cable still has certain room for improvement in electrical performance, durability and safety, especially in the high voltage transmission process, how to ensure that the cable can have good wear resistance, oxidation resistance and high temperature resistance while bearing high current and high voltage is a key technical problem that needs to be solved in the design of high voltage cable, and the existing vehicle high voltage cable has high overall hardness in order to ensure the structural strength, which is not conducive to cable arrangement, installation and removal;

[0004] To solve the above problems, a vehicle connection high voltage transmission cable is proposed in the present application. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a vehicle connection high voltage transmission cable, which solves the problems in the prior art through compact structure and reliable performance.

[0006] The utility model can be realized by the following technical solutions:

[0007] A vehicle connection high voltage transmission cable comprises a woven rope for ensuring the tensile resistance of the cable, a buffer sleeve and an envelope arranged outside the woven rope, the buffer sleeve and the envelope are combined to form a movable cavity for improving the flexibility of the cable, an outer insulation layer is arranged outside the envelope and wraps the conductor, an oxidation-resistant coating is arranged on the outer wall of the conductor for improving the stability, and the conductor is wrapped by an inner insulation layer, two layers of braided armor layers are arranged outside the outer insulation layer for shielding, two layers of microporous membranes are arranged between the two layers of braided armor layers for reducing the density of the cable, two layers of sheaths are arranged outside the cable, including an inner sheath with improved tensile strength and wear resistance, and an outer sheath with wear resistance, oil resistance and acid and alkali resistance.

[0008] The high-voltage transmission cable has tensile strength, wear resistance and good flexibility, can effectively transmit power during vehicle operation, and protects the internal conductor from the influence of the external environment.

[0009] The buffer sleeve is tightly attached to the outside of the braided rope by extrusion, and a plurality of support strips are uniformly distributed on the outside of the buffer sleeve, and support ribs are formed at the connection between the support strips and the buffer sleeve, and a buffer groove forming a movable cavity is formed between the adjacent two support strips and the sleeve;

[0010] In the above technical solution, the braided rope is used to enhance the tensile resistance of the cable, the buffer sleeve and the sleeve are added outside, forming a movable cavity, and the flexibility and vibration resistance of the cable are improved.

[0011] The sleeve on the outside of the buffer sleeve forms a closed loop support inside the outer insulating layer.

[0012] The antioxidant coating is coated or sprayed to isolate the conductor from oxygen;

[0013] In the above technical solution, the antioxidant layer can effectively isolate oxygen in the air, prevent oxidation and corrosion of the metal surface, maintain the long-term stability and good conductivity of the cable, and the use of the antioxidant layer on the outside of the cable conductor can significantly improve the long-term stability, conductivity, weather resistance and safety of the cable, which is an important measure to ensure the reliable operation of the power system.

[0014] The braided armor layer is formed by braiding metal wires with shielding effect;

[0015] In the above technical solution, the braided armor layer has the advantages of anti-mechanical damage, waterproof and moisture-proof, anti-electromagnetic interference, and increased cable strength, which improves the damage resistance, durability and safety of the cable.

[0016] The microporous membrane is a strip-shaped polyethylene member and is tightly formed between the two braided armor layers by spiral wrapping;

[0017] In the above technical solution, the microporous membrane has good waterproofness, can effectively prevent water from penetrating into the inside of the cable, protect the conductor from the influence of the humid environment, and has a certain physical strength, which can provide additional mechanical protection to prevent damage to the cable caused by external physical impact, stretching and compression.

[0018] The inner sheath is made of high-temperature-resistant polyvinyl chloride with added aramid fiber and is coated on the outside of the outer braided armor layer;

[0019] In the technical scheme, the aramid fiber has excellent high-temperature resistance, can keep stable physical properties in a high-temperature environment, and the high-temperature resistant polyvinyl chloride can resist a high working temperature, generally up to 85 DEG C to 105 DEG C, so that the cable has good high-temperature resistance, enhanced mechanical strength, excellent fireproof performance and chemical corrosion resistance, and can be stably operated for a long time in a severe environment.

[0020] The outer sheath is formed by polyurethane coating on the outside of the inner sheath;

[0021] In the technical scheme, the outer sheath is made of polyurethane material, has wear resistance, oil resistance, acid and alkali resistance and the like, and greatly improves the durability and corrosion resistance of the cable.

[0022] The braided rope is formed by a plurality of thin ropes and is tightly wrapped by the buffer sleeve;

[0023] In the technical scheme, the braided rope is formed by a plurality of thin fiber materials, so that the tensile strength of the cable is enhanced, and necessary mechanical support is provided.

[0024] The support strips, support ribs and buffer grooves are arranged along the axial direction of the cable;

[0025] In the technical scheme, the distribution mode ensures the flexibility consistency of the whole cable, so that the cable is more flexible while the strength is ensured.

[0026] The cable has the advantages that:

[0027] The cable is internally provided with a buffer sleeve and an envelope, buffer grooves are formed in the buffer sleeve, the braided rope enhances the tensile strength of the cable, and the buffer grooves ensure the flexibility of the cable, so that the cable can be arranged and disassembled more flexibly;

[0028] The anti-oxidation coating coated on the outside of the conductor can effectively isolate oxygen in the air, prevent oxidation from occurring, and thus maintain the excellent conductivity of the conductor, so that the service life of the cable can be significantly prolonged. The anti-oxidation layer can prevent the erosion of environmental factors such as humidity and acidic gas, and enhance the durability and reliability of the cable in a severe environment;

[0029] The utility model discloses still set up two layers of microporous membrane between two layers of braided armors, and the braided armor ensures the strength of the cable, the microporous membrane provides the activity space of braided armor, promotes the flexibility of the cable, and the braided armor made of metal wire can provide strong electromagnetic shielding and mechanical protection, and the microporous membrane made of polyethylene film can supplement the shielding demand of high-frequency signals and waterproof and moistureproof, and the two are combined to improve the comprehensive performance of the cable.

[0030] The utility model discloses a sheath is set to inner and outer layer, and the inner sheath adopts high temperature resistant polyvinyl chloride and adds aramid fiber, further improves the tensile strength and the wear resistance of cable, and the outer sheath adopts wear -resisting, oil -resistant, acid -resistant polyurethane material, has excellent physical performance, can effectively prevent the damage of external environment to cable, such as friction, mechanical impact, chemical corrosion etc. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will be briefly introduced to the drawing needed to be used in the embodiment or prior art description, obviously, for ordinary skilled person in the art, under the premise of not paying creative labor, still can obtain other drawings according to these drawings.

[0032] Figure 1 It is the structural schematic diagram of the utility model;

[0033] Figure 2 It is Figure 1 The structural schematic diagram of the top view;

[0034] Figure 3 It is the structural schematic diagram of the cable section;

[0035] Figure 4 It is the structural schematic diagram of the buffer sleeve local amplification;

[0036] In the drawings, the component list represented by each sign is as follows:

[0037] In the drawing: 1, braided rope;2, buffer sleeve;21, support strip;22, support rib;23, buffer groove;3, envelope;4, conductor;5, antioxidant coating;6, inner insulation layer;7, outer insulation layer;8, braided armor layer;9, microporous membrane;10, inner sheath;11, outer sheath. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical scheme and advantage of the utility model more clearly, the following is in combination with specific embodiment, and the utility model is further detailedly explained.It should be understood that the specific embodiment described here is only used to explain the utility model, and is not used to limit the utility model.Based on the embodiment in the utility model, all other embodiments obtained by ordinary skilled person in the art without making creative labor belong to the scope of protection of the utility model.

[0039] As Figure 1 - Figure 4 Indicated:

[0040] Embodiment 1

[0041] The embodiment provides a structure of a high-voltage transmission cable for vehicle connection, which comprises the following components.

[0042] The braided rope 1 is braided by a plurality of fine fiber materials in the embodiment, and the tensile strength of the cable is enhanced. The braided rope 1 is tightly wrapped inside the buffer sleeve 2, and necessary mechanical support is provided.

[0043] The buffer sleeve 2 and the envelope 3: the buffer sleeve 2 is made of a high-elasticity material and is wrapped outside the braided rope 1 in an extrusion mode. A plurality of support strips 21 are uniformly arranged outside the buffer sleeve 2, support ribs 22 are formed at the connection positions of the support strips 21 and the buffer sleeve 2, and buffer grooves 23 are formed between the two support strips 21. The design forms a movable cavity, which can effectively buffer external force and reduce fatigue and damage of the cable.

[0044] The outer insulation layer 7: the outer insulation layer 7 is made of a material with high insulation performance, and the safety of the cable in a high-voltage environment is ensured. The outer insulation layer 7 is wrapped outside the envelope 3 and plays a protective role.

[0045] The conductor 4 and the anti-oxidation coating 5: the conductor 4 is made of a high-conductivity material such as copper or aluminum, and a layer of anti-oxidation coating 5 is coated on the outer surface of the conductor 4, so that the conductor is not oxidized and corroded, and the service life of the cable is prolonged. The inner insulation layer 6 is wrapped outside the conductor 4 and plays an electrical isolation role.

[0046] The braided armor layer 8: in order to increase the anti-external damage ability of the cable, two layers of armor layers 8 made of metal wires are arranged outside. The armor layers not only have a protective role, but also can effectively shield electromagnetic interference.

[0047] The microporous membrane 9: a strip-shaped polyethylene microporous membrane 9 is arranged between the two braided armor layers 8 and is formed in a spiral wrapping mode. The microporous membrane not only reduces the overall density of the cable, but also improves the heat resistance of the cable.

[0048] The sheath layer: the inner sheath 10 is made of aramid fiber reinforced high-temperature resistant polyvinyl chloride material, which provides excellent tensile strength and high-temperature resistance; the outer sheath 11 is made of polyurethane material, which has excellent physical and chemical properties such as wear resistance, oil resistance, acid and alkali resistance, and ensures the long-term stable operation of the cable in harsh environments.

[0049] Specifically, the buffer sleeve 2 is made of rubber material with good elasticity and weather resistance, which is tightly wrapped outside the braided rope 1, so that the cable has sufficient flexibility during vehicle operation. The support strips 21 and the buffer ribs 22 arranged outside the buffer sleeve 2 jointly form a structure with a movable cavity, which not only can effectively reduce the mechanical stress of the cable during high-voltage work, but also can provide better protection during severe motion or bending.

[0050] Specifically, in order to prolong the service life of the cable, the embodiment adopts an anti-oxidation coating 5 technology, and a layer of high-efficiency anti-oxidation material is coated outside the conductor 4, so that the conductor is prevented from being damaged by oxidation in a long-time high-voltage working environment. In addition, the two outer braided armor layers 8 are woven by metal wires with shielding effect, so that the influence of external electromagnetic interference on the conductor in the cable is effectively prevented, and the stability of power transmission is ensured.

[0051] Specifically, by adding aramid fibers in the inner sheath 10 and using polyurethane material for the outer sheath 11, the embodiment significantly improves the tensile strength, wear resistance, and oil and acid and alkali resistance of the cable. After a long time of wear resistance and corrosion resistance test, the cable performs well in various harsh environments and can meet the demand for high-voltage transmission cables in modern transportation tools.

[0052] It can be understood that the cable of the utility model improves the performance through multiple innovative designs. The internal buffer sleeve and the envelope form a buffer groove, which enhances the flexibility and flexibility of the cable, and facilitates arrangement and disassembly. The conductor is coated with an anti-oxidation coating to prevent oxidation and moisture and acidic gas erosion and prolong the service life. The braided armor layer is combined with the microporous membrane to provide mechanical protection, electromagnetic shielding and waterproof and moisture-proof performance, and improve the durability of the cable. The inner sheath is made of high-temperature-resistant polyvinyl chloride and aramid fiber to enhance the tensile strength and wear resistance, and the outer sheath is made of wear-resistant, oil-resistant and acid-resistant polyurethane material to improve the reliability and physical properties of the cable in harsh environments.

[0053] In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more; it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery" and the like indicate the orientation or positional relationship, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model.

[0054] Finally, it should be pointed out that: the above-mentioned only for the preferred embodiment of the utility model, and does not limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can modify the technical scheme recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model, should be included in the protection scope of the utility model.

Claims

1. A high-voltage transmission cable for vehicle connection, characterized by, It comprises: A braided rope (1) to ensure the tensile strength of the cable and a buffer sleeve (2) and a sheath (3) arranged outside the braided rope (1), the buffer sleeve (2) and the sheath (3) combine to form a movable cavity to improve the flexibility of the cable; An outer insulation layer (7) is arranged outside the sheath (3) and wraps the conductor (4), the outer wall of the conductor (4) is provided with an oxidation-resistant coating (5) to improve the stability and is wrapped by an inner insulation layer (6); Two layers of braided armor layers (8) are arranged outside the outer insulation layer (7) and have a shielding effect; Two layers of microporous membranes (9) are arranged between the two layers of braided armor layers (8) to reduce the density of the cable; Two layers of sheaths are arranged outside the cable, including an inner sheath (10) with improved tensile strength and wear resistance and an outer sheath (11) with wear resistance, oil resistance and acid and alkali resistance.

2. The high voltage transmission cable for vehicle connection according to claim 1, characterized in that: The buffer sleeve (2) is tightly attached to the outside of the braided rope (1) by extrusion coating, and a plurality of support strips (21) are uniformly distributed on the outside of the buffer sleeve (2), support ribs (22) are formed at the connection between the support strips (21) and the buffer sleeve (2), and a buffer groove (23) serving as a movable cavity is formed between the two adjacent support strips (21) and the sheath (3).

3. The high voltage transmission cable for vehicle connection according to claim 1, characterized in that: The sheath (3) outside the buffer sleeve (2) forms a closed loop support on the inner side of the outer insulation layer (7).

4. The high voltage transmission cable for vehicle connection according to claim 1, characterized in that: The oxidation-resistant coating (5) is coated or sprayed to wrap the conductor (4) and isolate it from oxygen.

5. The high voltage transmission cable for vehicle connection according to claim 1, characterized in that: The braided armor layer (8) is formed by braiding metal wires with a shielding effect.

6. The high voltage transmission cable for vehicle connection according to claim 1, characterized in that: The microporous membrane (9) is a strip-shaped polyethylene component and is tightly formed between the two layers of braided armor layers (8) by spiral wrapping.

7. The high voltage transmission cable for vehicle connection according to claim 1, characterized in that: The inner sheath (10) is made of high-temperature-resistant polyvinyl chloride with added aramid fibers and is coated on the outside of the outer braided armor layer (8).

8. A high voltage transmission cable for vehicle connection according to claim 7, characterized in that: The outer sheath (11) is made of polyurethane and is coated on the outside of the inner sheath (10).

9. The high voltage transmission cable for vehicle connection according to claim 1, characterized in that: The braided rope (1) is formed by braiding a plurality of thin ropes and is tightly wrapped by the buffer sleeve (2).

10. The high voltage transmission cable for vehicle connection according to claim 2, characterized by: The support strips (21), support ribs (22) and buffer grooves (23) are arranged in the axial direction of the cable.

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