A corrosion-resistant charging cable for new energy vehicles and its preparation method

Abstract

The present invention discloses a corrosion-resistant new energy vehicle charging cable and a preparation method thereof, which includes a cable main body. The cable main body includes a conductor and a shielding layer, and an insulating layer is fixedly sleeved outside the conductor; a protection component, the number of the protection components is several and they are evenly distributed on the surface of the cable main body. The protection component includes a rubber buffer fixedly installed on the surface of the shielding layer, and a plurality of installation grooves are formed on both the left and right sides of the rubber buffer; a corrosion-resistant layer, and the corrosion-resistant layer is fixedly sleeved on the surface of the rubber buffer. The technical problem to be solved by the present invention is that during the use of the existing new energy vehicle charging cable, the protection effect on the internal conductor of the cable and the connectors at both ends of the cable is poor, which easily causes damage to the electrical contacts inside the conductor and the connectors, resulting in cable failures and reducing the service life of the cable.

Description

Technical Field

[0001] The present invention relates to the technical field of cables, in particular to a corrosion-resistant new energy vehicle charging cable and a preparation method thereof. Background Art

[0002] The new energy vehicle charging cable is specifically designed for charging electric vehicles or plug-in hybrid vehicles. This cable is significantly different from traditional automotive wires or household cables because it must meet more stringent safety standards and performance requirements. A corrosion-resistant new energy vehicle charging cable refers to a cable that can resist the erosion of chemical substances, oil stains, salt spray, and other corrosive media under harsh environmental conditions. Such cables are usually used in the charging systems of new energy vehicles, including the connection between the vehicle itself and the charging pile.

[0003] The new energy vehicle charging cable is often exposed to outdoor environments, including rain, humidity, salt spray, dust, and various chemical substances, which may accelerate the corrosion of the cable materials. Especially in coastal areas or industrial zones, the salts and chemical pollutants in the air will exacerbate the corrosion of metal components. Corrosion will change the properties of the metal surface, resulting in an increase in contact resistance, which may cause local overheating, posing potential risks of electrical fires and electric shock accidents. Corrosion at the joint connection will reduce the reliability of the electrical connection, possibly leading to current interruption or instability, affecting the charging efficiency and safety.

[0004] The corrosion-resistant new energy vehicle charging cable and its preparation method with the Chinese patent application number 202410029584.9. The preparation method of the corrosion-resistant new energy vehicle charging cable includes the following steps: Step (1): Prepare a spraying solution using polyvinylidene fluoride solution and nano carbon black; Step (2): Strands of tinned soft copper wires are twisted to obtain a conductor of the wire core, an insulating layer material is wrapped outside the conductor of the wire core to obtain a wire core, after arranging three wire cores, they are wrapped with an armor layer, and then a layer of corrosion-resistant layer material is wrapped outside the armor layer, tightly combined, the spraying solution is evenly sprayed on the surface of the corrosion-resistant layer with a spray gun, and then placed in an oven for curing to obtain a corrosion-resistant new energy vehicle charging cable. This new energy vehicle charging cable prevents corrosion by external factors through setting a protection structure on the surface.

[0005] During the use of the existing new energy vehicle charging cables, the protection effect on the internal conductors of the cables and the joints at both ends of the cables is poor, which easily causes damage to the electrical contacts inside the conductors and joints, resulting in cable failures and reducing the service life of the cables. Summary of the Invention

[0006] The technical problem to be solved by the present invention is that during the use of existing charging cables for new energy vehicles, the protection effect on the internal conductors of the cables and the connectors at both ends of the cables is relatively poor, which easily causes damage to the electrical contacts inside the conductors and connectors, resulting in cable failures and reducing the service life of the cables.

[0007] To solve the above technical problems, the present invention provides the following technical solutions: a corrosion-resistant charging cable for new energy vehicles, which includes,

[0008] A cable main body, the cable main body includes a conductor and a shielding layer, and an insulating layer is fixedly sleeved outside the conductor;

[0009] A protection component, the number of the protection components is several and they are evenly distributed on the surface of the cable main body. The protection component includes a rubber buffer fixedly installed on the surface of the shielding layer, and several installation grooves are opened on both the left and right sides of the rubber buffer;

[0010] A corrosion-resistant layer, the corrosion-resistant layer is fixedly sleeved on the surface of the rubber buffer;

[0011] A sealing ring, the sealing ring is installed at the front and rear ends of the rubber buffer to seal the first buffer oil cavity and the second buffer oil cavity;

[0012] A connection mechanism, the connection mechanism is fixedly installed at the front and rear ends of the cable main body and is electrically connected thereto. The connection mechanism includes a connector main body.

[0013] Preferably, an inner sheath is sleeved outside the insulating layer. There is a filler inside the inner sheath. The insulating layer is located inside the filler. The surface of the inner sheath is fixedly connected to the inner wall of the shielding layer. The conductor material is tinned annealed soft stranded copper. The insulating layer material is cross-linked polyethylene. The filler material is organic fireproof filler. The inner sheath material is polyurethane. The shielding layer material is braided copper wire.

[0014] Preferably, a first buffer oil cavity is opened in the middle of the rubber buffer internally. Second buffer oil cavities communicating with the first buffer oil cavity are opened on both the left and right sides inside the rubber buffer. Elastic arc-shaped plates are fixedly connected to both the left and right sides of the inner cavity of the first buffer oil cavity. A number of bending buffer members are fixedly connected to the opposite sides of the elastic arc-shaped plates.

[0015] Preferably, the corrosion-resistant layer material is chloroprene rubber. The surface of the sealing ring is fixedly connected to the inner wall of the corrosion-resistant layer. The inner wall of the sealing ring is fixedly connected to the surface of the shielding layer.

[0016] Preferably, a first reinforcing strip, a second reinforcing strip and a third reinforcing strip are respectively fixedly connected inside the installation grooves, and the first reinforcing strip, the second reinforcing strip and the third reinforcing strip are arranged in sequence from bottom to top.

[0017] Preferably, the surfaces of the first reinforcing strip, the second reinforcing strip, and the third reinforcing strip are all coated with an adhesion layer. The material of the first reinforcing strip is hemp rope, the material of the second reinforcing strip is synthetic fiber, and the material of the third reinforcing strip is galvanized steel wire rope.

[0018] Preferably, a silver-plated electrical contact is provided inside the joint body. A support ring is fixedly sleeved on the surface of the joint body. A conical sealing ring is provided on one side of the support ring, and the conical sealing ring is movably sleeved on the surface of the joint body.

[0019] Preferably, a limit ring is fixedly connected to the surface of the joint body. A rotating sleeve is rotatably connected to the surface of the limit ring. An external thread sleeve is fixedly connected to one side of the rotating sleeve. A plurality of connecting pieces are fixedly connected to the surface of the rotating sleeve. A clamping rod is rotatably connected to the connecting piece. A clamping head is fixedly connected to one end of the clamping rod. Two elastic clamping rings are fixedly sleeved on the surface of the clamping head. The two elastic clamping rings are fixedly connected by bolts and nuts. A sealing sleeve is movably connected to the inner side of the clamping head, and the sealing sleeve is movably sleeved on the surface of the external thread sleeve.

[0020] Preferably, a clamping head is provided on the outer side of the clamping head. A clamping hole is formed in the elastic clamping ring, and a clamping groove is formed in the sealing sleeve. The clamping head is movably connected to the clamping hole and the clamping groove.

[0021] A preparation method for a corrosion-resistant new energy vehicle charging cable includes the following steps:

[0022] S1. Sleeve an insulating layer outside the conductor, sleeve an inner sheath outside the insulating layer, fill organic fireproof filler outside the insulating layer to ensure that the voids inside the inner sheath are filled, and sleeve a shielding layer on the surface of the inner sheath;

[0023] S2. Fix a plurality of rubber buffer members on the surface of the shielding layer, coat an adhesion layer on the first reinforcing strip, the second reinforcing strip, and the third reinforcing strip, and then fix the first reinforcing strip, the second reinforcing strip, and the third reinforcing strip in the installation grooves of the rubber buffer members;

[0024] S3. Fix an elastic arc-shaped plate and a bending buffer member in the first buffer oil cavity, and fill buffer oil in the first buffer oil cavity and the second buffer oil cavity formed inside the rubber buffer member;

[0025] S4. Sleeve a corrosion-resistant layer made of neoprene on the surface of the rubber buffer member, and install sealing rings at the front and rear ends of the rubber buffer member to ensure the sealing of the buffer oil;

[0026] S5. Fix joint bodies at both ends of the cable body and connect them to each component. Install silver-plated electrical contacts inside the joint bodies. During assembly, install a conical sealing ring and a sealing sleeve to seal the connection.

[0027] The beneficial effects of the present invention:

[0028] 1. The present invention can protect the cable body by setting a protection component. When the surface of the cable is externally squeezed, the rubber buffer first deforms, converting mechanical energy into the deformation energy of the buffer. Subsequently, the deformation energy is transmitted to the buffer oil inside, and the energy is further converted and dissipated through the compression and flow of the fluid. The buffer oil in the second buffer oil chamber flows into the first buffer oil chamber, and the buffer oil in the first buffer oil chamber impacts the elastic arc-shaped plate. The elastic arc-shaped plate drives the bending buffer to deform simultaneously, and the deformation of the elastic arc-shaped plate and the bending buffer further converts the remaining energy into heat energy, ultimately achieving the effective absorption and conversion of the impact force.

[0029] 2. The present invention can resist the corrosion of external factors by setting a corrosion-resistant layer made of neoprene. Neoprene has excellent chemical corrosion resistance and can resist the erosion of various acid, alkali, salt solutions, and organic solvents, protecting the cable from damage by external chemical substances. It also has good oil resistance and can effectively prevent oil substances from penetrating into the cable interior. Neoprene has good weather resistance and ozone aging resistance, which means it can be exposed to the outdoor environment for a long time and resist the effects of ultraviolet rays, atmospheric oxidation, and climate change.

[0030] 3. Through the combined use of the support ring and the limit ring, as well as the design of the rotating sleeve and the external thread sleeve, the present invention enables the cable to be firmly connected to external equipment. At the same time, the conical sealing ring and the sealing sleeve ensure the sealing performance of the connection, preventing moisture, dust, or other pollutants from entering and protecting the electrical connection from the external environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is the front isometric view of the present invention.

[0032] Figure 2 is the front side-sectional isometric view of the present invention.

[0033] Figure 3 is the front orthographic-sectional isometric view of the present invention.

[0034] Figure 4 is the front isometric view of the cable body of the present invention.

[0035] Figure 5 is the front isometric view of the protection component of the present invention.

[0036] Figure 6 is the side-sectional front isometric view of the protection component of the present invention.

[0037] Figure 7 is the front isometric view of the first reinforcing bar, the second reinforcing bar, and the third reinforcing bar of the present invention.

[0038] Figure 8 Front isometric view of the connection state of the present invention.

[0039] Figure 9 Front isometric view of the connection mechanism of the present invention.

[0040] Figure 10 For the present invention Figure 9 Enlarged view of A in

[0041] Figure 11 Front exploded view of the connection mechanism of the present invention.

[0042] Figure 12 Schematic diagram of the insertion state of the connection mechanism of the present invention.

[0043] In the figure: 100, cable main body; 101, conductor; 102, insulating layer; 103, filler; 104, inner sheath; 105, shielding layer; 200, protection component; 201, rubber buffer; 202, elastic arc plate; 203, bending buffer; 204, first buffer oil cavity; 205, installation groove; 206, second buffer oil cavity; 300, corrosion-resistant layer; 400, sealing ring; 500, first reinforcing strip; 600, second reinforcing strip; 700, third reinforcing strip; 800, adhesion layer; 900, connection mechanism; 901, joint main body; 902, silver-plated electrical contact; 903, external thread sleeve; 904, elastic snap ring; 905, limiting ring; 906, support ring; 907, conical sealing ring; 908, connecting piece; 909, rotating sleeve; 910, clamping rod; 911, chuck; 912, clamping head; 913, sealing sleeve; 914, clamping hole; 915, clamping groove. Specific embodiments

[0044] To make the above objects, features, and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings of the specification.

[0045] Example 1, as Figures 1-12 shown, this embodiment provides a corrosion-resistant new energy vehicle charging cable, including a cable main body 100. The cable main body 100 includes a conductor 101 and a shielding layer 105, and an insulating layer 102 is fixedly sleeved outside the conductor 101.

[0046] An inner sheath 104 is sleeved outside the insulating layer 102. There is a filler 103 inside the inner sheath 104, and the insulating layer 102 is located within the filler 103. The surface of the inner sheath 104 is fixedly connected to the inner wall of the shielding layer 105. The material of the conductor 101 is tinned annealed soft stranded copper, the material of the insulating layer 102 is cross-linked polyethylene, the material of the filler 103 is organic fireproof filler, the material of the inner sheath 104 is polyurethane, and the material of the shielding layer 105 is braided copper wire.

[0047] The conductor 101 is tinned annealed soft stranded copper. Tin plating improves the corrosion resistance of the conductor, while annealing treatment increases its softness and ductility. The soft stranded structure enhances the mechanical strength and flexibility of the conductor, making it not easy to break during frequent bending.

[0048] The insulating layer 102 is cross-linked polyethylene. Cross-linked polyethylene is a high-performance insulating material with excellent electrical properties, high heat resistance and good mechanical strength. It can withstand high voltage and current and remain stable within a wide temperature range.

[0049] The filler 103 is an organic fireproof filler. This type of filler will expand to form a heat-insulating layer at high temperatures, preventing the spread of flames. At the same time, it can also fill the internal voids of the cable, improving the overall structural stability and compressive capacity of the cable.

[0050] The inner sheath 104 is polyurethane. Polyurethane has excellent abrasion resistance and oil resistance, and at the same time has good weather resistance and low-temperature toughness, and can protect the internal structure of the cable in harsh environments.

[0051] The shielding layer 105 is braided copper wire. The braided copper wire shielding layer can effectively reduce electromagnetic interference and radio frequency interference, ensure the clarity of signal transmission, and at the same time enhance the mechanical protection of the cable.

[0052] The organic fireproof filler is composed of organic synthetic resin, intumescent fire retardant, talcum powder, flame retardant and curing agent.

[0053] By weight, the organic synthetic resin is 5 - 7 parts, the intumescent fire retardant is 1 - 3 parts, the talcum powder is 1 - 2 parts, the flame retardant is 0.5 - 1 part, and the curing agent is 0.1 - 0.5 part.

[0054] The addition of the intumescent fire retardant and the flame retardant ensures that the filler can effectively prevent the spread of flames at high temperatures and improve the fire protection level. The use of talcum powder and organic synthetic resin improves the mechanical strength and stability of the filler, making it not easy to break or deform during installation and use. The curing agent is used to accelerate the curing process of the filler, ensuring that the filler can quickly form a stable structure after construction.

[0055] It also includes a protection component 200. The number of the protection components 200 is several and they are evenly distributed on the surface of the cable body 100. The protection component 200 includes a rubber buffer 201 fixedly installed on the surface of the shielding layer 105. A plurality of installation grooves 205 are provided on both the left and right sides of the rubber buffer 201.

[0056] A first buffer oil cavity 204 is provided in the middle end of the rubber buffer member 201. Second buffer oil cavities 206 communicating with the first buffer oil cavity 204 are provided on both the left and right sides inside the rubber buffer member 201. Elastic arc-shaped plates 202 are fixedly connected to both the left and right sides inside the cavity of the first buffer oil cavity 204, and a number of bending buffer members 203 are fixedly connected to the opposite sides of the elastic arc-shaped plates 202.

[0057] Buffer oil is provided inside both the first buffer oil cavity 204 and the second buffer oil cavity 206, and the buffer oil is located on the opposite sides of the two elastic arc-shaped plates 202.

[0058] When the surface of the cable is externally squeezed, the rubber buffer member 201 first deforms, converting mechanical energy into the deformation energy of the buffer member. Subsequently, the deformation energy is transmitted to the buffer oil inside, and the energy is further converted and dissipated through the compression and flow of the fluid. The buffer oil inside the second buffer oil cavity 206 flows into the first buffer oil cavity 204, and the buffer oil inside the first buffer oil cavity 204 impacts the elastic arc-shaped plates 202. The elastic arc-shaped plates 202 drive the bending buffer members 203 to deform simultaneously, and the deformation of the elastic arc-shaped plates 202 and the bending buffer members 203 further converts the remaining energy into heat energy, ultimately achieving the effective absorption and conversion of the impact force.

[0059] The multi-stage design of the second buffer oil cavity 206 and the first buffer oil cavity 204 allows the cable to provide progressive protection through different levels of buffer responses under external forces of different degrees, ensuring that even under slight external forces, the cable can be properly protected. Under strong external forces, the multi-stage buffer mechanism can work together to provide a higher level of protection. By effectively dispersing and absorbing the external force, the direct impact on the cable body 100 is reduced, thereby improving the overall mechanical life and reliability of the cable. The buffer mechanism can also reduce the fatigue damage of the cable caused by repeated bending or extrusion, extending the service life of the cable.

[0060] A first reinforcing strip 500, a second reinforcing strip 600, and a third reinforcing strip 700 are respectively fixedly connected inside the installation groove 205, and the first reinforcing strip 500, the second reinforcing strip 600, and the third reinforcing strip 700 are arranged in sequence from bottom to top.

[0061] Adhesive layers 800 are coated on the surfaces of the first reinforcing strip 500, the second reinforcing strip 600, and the third reinforcing strip 700. The number of the first reinforcing strip 500, the second reinforcing strip 600, and the third reinforcing strip 700 is several. The material of the first reinforcing strip 500 is hemp rope, the material of the second reinforcing strip 600 is synthetic fiber, and the material of the third reinforcing strip 700 is galvanized steel wire rope.

[0062] The first reinforcing strip 500 is located in the innermost layer and is made of hemp rope, which can provide preliminary filling and support, help maintain the roundness of the cable and the stability of the core. At the same time, the hemp rope has a certain hygroscopicity, can absorb the moisture inside the cable, and reduce the influence of moisture on the internal core. The second reinforcing strip 600 is located in the middle layer and is made of tensile fiber, which can provide medium-strength tensile performance. They can not only enhance the tensile strength of the cable, but also, due to their lightweight characteristics, will not significantly increase the weight of the cable. The third reinforcing strip 700 is located on the outermost side and is made of the highest-strength galvanized steel wire rope, which can provide the maximum tensile and shear strength to protect the cable from the influence of extreme external forces, such as heavy pressure, dragging and impact.

[0063] Fixing the first reinforcing strip 500, the second reinforcing strip 600 and the third reinforcing strip 700 in the installation groove 205 can simplify the manufacturing process of the cable, ensure correct positioning, and at the same time, it is also convenient for evaluation and replacement if necessary during maintenance or inspection.

[0064] The adhesion layer 800 is used to ensure the firm adhesion between the first reinforcing strip 500, the second reinforcing strip 600 and the third reinforcing strip 700 and the rubber buffer 201. By providing a good adhesion interface, the adhesion layer 800 can prevent the reinforcing strips from shifting or detaching when the cable is subjected to external forces, thus maintaining the integrity and stability of the cable structure.

[0065] The adhesion layer 800 helps to combine the mechanical properties of the first reinforcing strip 500, the second reinforcing strip 600 and the third reinforcing strip 700 with the elastic properties of the rubber buffer 201 to work together and improve the overall mechanical properties and durability of the cable.

[0066] It also includes a corrosion-resistant layer 300, which is fixedly sleeved on the surface of the rubber buffer 201.

[0067] The material of the corrosion-resistant layer 300 is neoprene.

[0068] The corrosion-resistant layer 300 is arranged on the outermost side and can resist the corrosion of external factors. Neoprene has excellent chemical corrosion resistance and can resist the erosion of various acid, alkali, salt solutions and organic solvents, protecting the cable from damage by external chemical substances. It also has good oil resistance and can effectively prevent oil substances from penetrating into the cable interior. Neoprene has good weather resistance and ozone aging resistance, which means it can be exposed to the outdoor environment for a long time and resist the influence of ultraviolet rays, atmospheric oxidation and climate change.

[0069] It also includes a sealing ring 400, which is installed at the front and rear ends of the rubber buffer 201 to seal the first buffer oil cavity 204 and the second buffer oil cavity 206.

[0070] The surface of the sealing ring 400 is fixedly connected to the inner wall of the corrosion-resistant layer 300, and the inner wall of the sealing ring 400 is fixedly connected to the surface of the shielding layer 105.

[0071] The sealing rings 400 are installed at the front and rear ends of the rubber buffer member 201. The purpose is to seal the first buffer oil chamber 204 and the second buffer oil chamber 206, prevent the buffer oil from leaking, and ensure the normal operation of the buffer system. Through the fixed connection with the inner wall of the corrosion-resistant layer 300 and the surface of the shielding layer 105, the sealing rings 400 enhance the overall structural stability of the cable, firmly fix the rubber buffer member 201 and the shielding layer 105 together, and prevent component displacement caused by mechanical vibration or external forces during the use of the cable. The sealing function of the sealing rings 400 is not limited to preventing buffer oil leakage. It can also prevent external pollutants, moisture, or dust from entering the cable interior and protect the cable from the influence of external environmental factors.

[0072] It further includes a connection mechanism 900. The connection mechanism 900 is fixedly installed at the front and rear ends of the cable main body 100 and is electrically connected thereto. The connection mechanism 900 includes a joint body 901

[0073] The joint body 901 is fixedly connected to the front and rear ends of the sealing ring 400, the corrosion-resistant layer 300, the conductor 101, the insulating layer 102, the fireproof filler 103, the inner sheath 104, and the shielding layer 105.

[0074] The joint body 901 is internally provided with a silver-plated electrical contact 902. A support ring 906 is fixedly sleeved on the surface of the joint body 901. A conical sealing ring 907 is provided on one side of the support ring 906, and the conical sealing ring 907 is movably sleeved on the surface of the joint body 901.

[0075] A limit ring 905 is fixedly connected to the surface of the joint body 901. A rotating sleeve 909 is rotatably connected to the surface of the limit ring 905. An external thread sleeve 903 is fixedly connected to one side of the rotating sleeve 909. A plurality of connecting members 908 are fixedly connected to the surface of the rotating sleeve 909. A clamping rod 910 is rotatably connected to the connecting member 908. A clamping head 912 is fixedly connected to one end of the clamping rod 910. Two elastic snap rings 904 are fixedly sleeved on the surface of the clamping head 912. The two elastic snap rings 904 are fixedly connected by bolts and nuts. A sealing sleeve 913 is movably connected to the inner side of the clamping head 912, and the sealing sleeve 913 is movably sleeved on the surface of the external thread sleeve 903.

[0076] A chuck 911 is provided on the outer side of the clamping head 912. A clamping hole 914 is formed in the elastic snap ring 904, and a clamping groove 915 is formed in the sealing sleeve 913. The chuck 911 is movably connected to the clamping hole 914 and the clamping groove 915.

[0077] During the installation of the connection mechanism 900, the external thread sleeve 903 is screwed into the socket to connect the socket and the silver-plated electrical contact 902. During the rotation of the external thread sleeve 903, the rotating sleeve 909 is driven to rotate on the surface of the limiting ring 905 to limit the external thread sleeve 903. The conical sealing ring 907 is located at the connection between the socket and the silver-plated electrical contact 902 to seal the connection. The support ring 906 limits and supports the conical sealing ring 907. After the installation is completed, the clamping rod 910 inside the rotating connector 908 is rotated, and the clamping rod 910 drives the chuck 912 to fit on the surface of the socket. After the fitting is completed, the chuck 911 is located inside the card slot 915 to fix the sealing sleeve 913. The sealing sleeve 913 seals the connection between the socket and the external thread sleeve 903. The card hole 914 is stuck on the chuck 911 to install the elastic snap ring 904, so that the elastic snap ring 904 is sleeved on the surface of the chuck 912, and the two elastic snap rings 904 are fixed by bolts and nuts to fasten a plurality of chucks 912.

[0078] Two connection mechanisms 900 are respectively installed on the sockets inside the charging pile and the charging gun to realize the charging of new energy vehicles. The silver-plated electrical contact 902 inside the joint body 901 provides low-resistance electrical contact, ensuring efficient and lossless transmission of current between the cable and external devices. Moreover, silver plating can reduce the oxidation of the contact surface and improve the conductivity.

[0079] Through the combined use of the support ring 906 and the limiting ring 905, and the design of the rotating sleeve 909 and the external thread sleeve 903, the cable can be firmly connected to external devices. At the same time, the conical sealing ring 907 and the sealing sleeve 913 ensure the sealing performance of the connection, preventing moisture, dust or other pollutants from entering and protecting the electrical connection from the external environment.

[0080] Through the combined use of the clamping rod 910 and the chuck 912, and in cooperation with the elastic snap ring 904 and the chuck 911, the clamping degree can be adjusted according to actual needs to ensure a tight connection. At the same time, a flexible connection method is provided, which is suitable for sockets with different diameters.

[0081] Through the rotational connection between the rotating sleeve 909 and the external thread sleeve 903, and the lever action of the clamping rod 910, the installation and disassembly processes are simple and fast, reducing the working difficulty during maintenance and cable replacement.

[0082] Through the combined use of the elastic snap ring 904 and the card slot 915, and the card slot 915 on the sealing sleeve 913, the stability and reusability of the connection are ensured. Even in a vibrating or moving environment, the connection will not loosen easily.

[0083] The rubber buffer 201, the conical sealing ring 907 and the sealing sleeve 913 are all made of rubber material.

[0084] Example 2, as Figures 1-12 shown, as the second embodiment of the present invention, this embodiment provides a method for preparing a corrosion-resistant new energy vehicle charging cable, including the following steps:

[0085] S1. Sheath an insulating layer 102 outside the conductor 101, sleeve an inner sheath 104 outside the insulating layer 102, fill organic fireproof filler 103 outside the insulating layer 102 to ensure that the voids inside the inner sheath 104 are filled, and sleeve a shielding layer 105 on the surface of the inner sheath 104;

[0086] S2. Fix a plurality of rubber buffer members 201 on the surface of the shielding layer 105, coat an adhesion layer 800 on the first reinforcing strip 500, the second reinforcing strip 600 and the third reinforcing strip 700, and then fix the first reinforcing strip 500, the second reinforcing strip 600 and the third reinforcing strip 700 in the installation groove 205 of the rubber buffer member 201;

[0087] S3. Fix an elastic arc plate 202 and a bending buffer member 203 in the first buffer oil cavity 204, and fill buffer oil in the first buffer oil cavity 204 and the second buffer oil cavity 206 opened inside the rubber buffer member 201;

[0088] S4. Sheath a corrosion-resistant layer 300 made of neoprene on the surface of the rubber buffer member 201, and install sealing rings 400 at the front and rear ends of the rubber buffer member 201 to ensure the sealing of the buffer oil;

[0089] S5. Fix joint bodies 901 at both ends of the cable body 100 and connect them to each component. Install silver-plated electrical contacts 902 inside the joint bodies 901. During assembly, install a conical sealing ring 907 and a sealing sleeve 913 to seal the connection.

[0090] The use of the insulating layer 102 and the shielding layer 105 ensures that the cable has good electrical isolation performance, reduces electromagnetic interference, and guarantees the stability and safety of power transmission. The addition of the first reinforcing strip 500, the second reinforcing strip 600 and the third reinforcing strip 700, combined with the design of the rubber buffer member 201 and its internal buffer oil cavity, improves the mechanical strength of the cable, enables it to withstand repeated bending and external extrusion, and extends the service life of the cable. The filling of the organic fireproof filler 103 not only enhances the structural stability of the cable, but also forms a heat-insulating layer under high-temperature conditions, effectively preventing the spread of fire and improving the fire rating of the cable. The corrosion-resistant layer 300 made of neoprene provides additional protection for the cable, enabling it to resist chemical corrosion and harsh weather conditions, and is suitable for outdoor and industrial environments. The use of the sealing ring 400 and the conical sealing ring 907 ensures the tightness of the internal components of the cable, prevents moisture and pollutants from entering, and protects the electrical connection from the external environment.

[0091] The connecting mechanism 900 includes a joint body 901 and a silver-plated electrical contact 902, which provides low-resistance electrical contact, ensuring efficient transmission of current. At the same time, the conical sealing ring 907 and the sealing sleeve 913 ensure the sealing of the connection, making the connection process both safe and convenient.

[0092] The first reinforcing strip 500, the second reinforcing strip 600, and the third reinforcing strip 700 are fixed through the preset installation grooves 205, which simplifies the manufacturing process of the cable, improves production efficiency and the yield rate.

Claims

1. A corrosion-resistant new energy vehicle charging cable, characterized in that: include, A cable body (100), the cable body (100) comprising a conductor (101) and a shielding layer (105), the outer side of the conductor (101) being fixedly sleeved with an insulating layer (102); A protective component (200), wherein the number of the protective components (200) is several and they are evenly distributed on the surface of the cable body (100), the protective component (200) comprises a rubber buffer (201) fixedly mounted on the surface of the shielding layer (105), and the rubber buffer (201) is provided with several mounting grooves (205) on both left and right sides; A corrosion-resistant layer (300), wherein the corrosion-resistant layer (300) is fixedly sleeved on the surface of the rubber buffer (201); A sealing ring (400), the sealing ring (400) being mounted on the front and rear ends of the rubber buffer (201) to seal the first buffer oil chamber (204) and the second buffer oil chamber (206); A connecting mechanism (900), the connecting mechanism (900) being fixedly mounted on the front and rear ends of the cable body (100) and electrically connected thereto, the connecting mechanism (900) comprising a connector body (901); A first reinforcement bar (500), a second reinforcement bar (600) and a third reinforcement bar (700) are respectively fixedly connected inside the installation groove (205), and the first reinforcement bar (500), the second reinforcement bar (600) and the third reinforcement bar (700) are arranged in sequence from bottom to top; The surfaces of the first reinforcement strip (500), the second reinforcement strip (600) and the third reinforcement strip (700) are all coated with an adhesive layer (800); the material of the first reinforcement strip (500) is hemp rope, the material of the second reinforcement strip (600) is synthetic fiber, and the material of the third reinforcement strip (700) is galvanized steel wire rope; A limit ring (905) is fixedly connected to the surface of the joint body (901), a rotating sleeve (909) is rotatably connected to the surface of the limit ring (905), an external threaded sleeve (903) is fixedly connected to one side of the rotating sleeve (909), a plurality of connecting members (908) are fixedly connected to the surface of the rotating sleeve (909), a clamping rod (910) is rotatably connected to the connecting member (908), one end of the clamping rod (910) is fixedly connected to a chuck (912), two elastic retaining rings (904) are fixedly sleeved on the surface of the chuck (912), the two elastic retaining rings (904) are fixedly connected by bolts and nuts, a sealing sleeve (913) is movably connected to the inner side of the chuck (912), and the sealing sleeve (913) is movably sleeved on the surface of the external threaded sleeve (903); A clamping head (911) is provided on the outside of the clamping head (912), a clamping hole (914) is provided on the elastic clamping ring (904), a clamping groove (915) is provided on the sealing sleeve (913), and the clamping head (911) is movably connected to the clamping hole (914) and the clamping groove (915).

2. The corrosion-resistant new energy vehicle charging cable according to claim 1, characterized in that: An inner sheath (104) is sleeved on the outer side of the insulating layer (102), a filler (103) is provided inside the inner sheath (104), the insulating layer (102) is located inside the filler (103), the surface of the inner sheath (104) is fixedly connected to the inner wall of the shielding layer (105), the conductor (101) is made of tinned annealed soft stranded copper, the insulating layer (102) is made of cross-linked polyethylene, the filler (103) is made of organic fireproof filler, the inner sheath (104) is made of polyurethane, and the shielding layer (105) is made of braided copper wire.

3. The corrosion-resistant new energy vehicle charging cable according to claim 2, characterized in that: A first buffer oil chamber (204) is provided at the middle end of the rubber buffer (201), and second buffer oil chambers (206) in communication with the first buffer oil chamber (204) are provided on both left and right sides of the rubber buffer (201). Elastic arc plates (202) are fixedly connected to the left and right sides of the first buffer oil chamber (204), and a plurality of curved buffer members (203) are fixedly connected to the opposite side of the elastic arc plate (202).

4. The corrosion-resistant new energy vehicle charging cable according to claim 3, characterized in that: The material of the corrosion-resistant layer (300) is chloroprene rubber, the surface of the blocking ring (400) is fixedly connected to the inner wall of the corrosion-resistant layer (300), and the inner wall of the blocking ring (400) is fixedly connected to the surface of the shielding layer (105).

5. The corrosion-resistant new energy vehicle charging cable according to claim 4, characterized in that: A silver-plated electrical contact (902) is provided inside the connector body (901), a support ring (906) is fixedly sleeved on the surface of the connector body (901), a conical sealing ring (907) is provided on one side of the support ring (906), and the conical sealing ring (907) is movably sleeved on the surface of the connector body (901).

6. A method for preparing a corrosion-resistant new energy vehicle charging cable, applicable to the corrosion-resistant new energy vehicle charging cable according to claim 5, characterized in that: The following steps are included: S1, sleeve an insulating layer (102) on the outside of the conductor (101), sleeve an inner sheath (104) on the outside of the insulating layer (102), fill the outer side of the insulating layer (102) with an organic fireproof filler (103), ensure that the gap inside the inner sheath (104) is filled, and sleeve a shielding layer (105) on the surface of the inner sheath (104); S2, fixing a plurality of rubber buffers (201) on the surface of the shielding layer (105), coating the first reinforcement strip (500), the second reinforcement strip (600) and the third reinforcement strip (700) with an adhesive layer (800), and then fixing the first reinforcement strip (500), the second reinforcement strip (600) and the third reinforcement strip (700) in the mounting groove (205) of the rubber buffer (201); S3, fixing the elastic arc plate (202) and the curved buffer member (203) in the first buffer oil chamber (204), and filling the first buffer oil chamber (204) and the second buffer oil chamber (206) opened in the rubber buffer member (201) with buffer oil; S4, a corrosion-resistant layer (300) made of chloroprene rubber is placed on the surface of the rubber buffer (201), and sealing rings (400) are installed at the front and rear ends of the rubber buffer (201) to ensure the sealing of the buffer oil; S5. The connector body (901) is fixed at both ends of the cable body (100) and connected to each component. The silver-plated electrical contact (902) is installed inside the connector body (901). During assembly, a conical sealing ring (907) and a sealing sleeve (913) are installed to seal the connection.

Images