Anti-bending and anti-deformation cable for charging electric automobile

Abstract

The utility model discloses an anti-bending and anti-deformation cable for charging an electric automobile, which comprises a power line core and a control line core which are arranged side by side at an interval, the power line core and the control line core are jointly wrapped in a polyurethane elastomer inner sheath to form a double-core integrated cable core, and the polyurethane elastomer inner sheath is provided with a connecting rib on an interval section between the power line core and the control line core. And a polyurethane elastomer outer sheath and an EVA (Ethylene Vinyl Acetate) wear-resistant protective layer are sequentially coated outside the polyurethane elastomer inner sheath. The cable core is stable in structure, high in mechanical strength, not prone to deformation, better in bending resistance, beneficial to prevention of wire and core breakage, more stable in signal transmission, higher in safety and reliability, resistant to abrasion, durable and better in applicability.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a bending and deformation resistant electric vehicle charging cable. Background Art

[0002] Electric vehicle charging wires and cables are used for electric vehicle charging equipment and charging ports, or vehicle charging and discharging warning control systems with control signal transmission functions for charging saturation, safety warnings, etc., usually ground wires, power wires, control wires, etc. are twisted into one cable. In daily use, they need to be repeatedly pulled, bent, and other operations. However, ordinary charging cables twist the ground wire, power wire, and control wire into a cable, and the wire cores are directly in contact with each other. The mechanical strength is weak, the bending resistance is average, the cable core structure is poorly stable, it is easy to deform, the core and wire are easily broken, the electrical characteristics are unstable, and the durability is poor. Utility Model Content

[0003] The utility model aims at the deficiencies of the prior art and aims to solve the technical problem of providing a bending and deformation-resistant electric vehicle charging cable, which has a stable cable core structure, high mechanical strength, is not easy to deform, has better bending resistance, helps to prevent wire and core breakage, makes signal transmission more stable, enhances safety and reliability, is wear-resistant, and has better durability and applicability.

[0004] The utility model solves the above technical problems through the following technical solutions.

[0005] The bending and deformation resistant electric vehicle charging cable comprises a power line core and a control line core arranged side by side and spaced apart, which are jointly coated in a polyurethane elastomer inner sheath to form a double-core integrated cable core, wherein the polyurethane elastomer inner sheath is provided with connecting ribs on the interval section between the power line core and the control line core, the power line core comprises two power line cores and a grounding line core which are jointly twisted with a para-type fully aromatic copolyamide stretched fiber core material to form a power line core body, the power line core body is externally coated with an ETFE resin wrapped anti-friction layer, the control line core comprises two twisted pair cores which are jointly twisted with a para-type fully aromatic copolyamide stretched fiber core material to form a control line core body, the control line core body is externally coated with an ETFE resin wrapped anti-friction layer, and the polyurethane elastomer inner sheath is externally coated with a polyurethane elastomer outer sheath and an EVA wear-resistant protective layer in sequence.

[0006] Preferably, the power line core comprises a power line core conductor, a first para-type wholly aromatic copolyamide stretched fiber plain weave and an XLPE insulation layer.

[0007] Preferably, the power line core conductor is formed by twisting a number of tinned copper wires with a diameter of 0.05 mm to 0.08 mm.

[0008] Preferably, the grounding core comprises a grounding conductor, a second para-type wholly aromatic copolyamide stretched fiber plain weave and a PVC insulation layer.

[0009] Preferably, the grounding conductor is a circular conductor structure formed by twisting and pressing a number of soft copper wires with a wire diameter of 0.1 mm to 0.3 mm.

[0010] Preferably, the twisted pair core comprises two insulated cores twisted together with two para-type fully aromatic copolyamide stretched fiber filling core strips to form a twisted pair core body, and the outside of the twisted pair core body is sequentially coated with an aluminum-plastic composite tape wrapped shielding layer and a copper wire wrapped shielding layer.

[0011] Preferably, the insulated wire core comprises an inner conductor, a third para-type wholly aromatic copolyamide stretched fiber plain weave and a PP insulation layer.

[0012] Preferably, the inner conductor is formed by twisting a plurality of tinned copper monofilaments with a diameter of 0.02 mm to 0.04 mm.

[0013] Preferably, the aluminum-plastic composite tape wrapped shielding layer is an aluminum-plastic composite tape unidirectional spiral overlapping wrapped structure, and the aluminum-plastic composite tape comprises an aluminum foil outer layer and a PET film inner layer.

[0014] Preferably, the copper wire wrapped shielding layer is formed by mixed unidirectional spiral winding of two tinned copper wires of different wire diameters with a wire diameter ratio between 0.9 and 1, and the shielding density is 90% to 95%.

[0015] Beneficial effects of the utility model:

[0016] 1. By optimizing the power core and control core into a dual-core integrated cable core structure, a connecting rib is formed between the power core and the control core, which effectively maintains the spacing between the dual cores and prevents cross-cores, making signal interference less likely and signal transmission more stable. The cable core structure is more stable, which helps to improve mechanical strength and has better bending resistance. It is not easy to deform during cable bending, which helps to prevent wire and core breakage, ensure the stability of transmission characteristics, and has better durability.

[0017] 2. The control line core is composed of two twisted pairs of cores and a para-type fully aromatic copolyamide stretched fiber core material twisted together to form the control line core body. The structure is balanced and stable, and the twisted pair cores are subjected to balanced force, which inhibits the occurrence of broken wires and cores. The twisted pair cores use an aluminum-plastic composite tape wrapped shielding layer and a copper wire wrapped shielding layer to form a double-layer shielding, which effectively inhibits signal crosstalk, stabilizes signal transmission performance, and has better durability.

[0018] 3. Add EVA wear-resistant protective layer on the outside of the polyurethane elastomer outer sheath to effectively prevent the wear and cracking of the sheath layer, extend the service life and ensure durable application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0020] Figure 1 It is a schematic diagram of the cross-sectional structure of an embodiment of the present application.

[0021] Figure markings: 1-power line core, 2-control line core, 3-polyurethane elastomer inner sheath, 4-connecting ribs, 5-power line core, 6-grounding line core, 7-para-type fully aromatic copolyamide stretched fiber core material, 8-ETFE resin wrapped friction reduction layer, 9-twisted core, 10-polyurethane elastomer outer sheath, 11-EVA wear-resistant protective layer, 12-power line core conductor, 13-first para-type fully aromatic copolyamide stretched fiber plain woven net, 14-XLPE insulation layer, 15-grounding conductor, 16-second para-type fully aromatic copolyamide stretched fiber plain woven net, 17-PVC insulation layer, 18-insulated core, 19-para-type fully aromatic copolyamide stretched fiber filling core strip, 20-aluminum-plastic composite tape wrapped shielding layer, 21-copper wire wrapped shielding layer, 22-inner conductor, 23-third para-type fully aromatic copolyamide stretched fiber plain woven net, 24-PP insulation layer. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figure 1As shown, the bending and deformation resistant electric vehicle charging cable of the embodiment of the utility model comprises a power core 1 and a control core 2 arranged side by side and coated together in a polyurethane elastomer inner sheath 3 to form a double-core integrated cable core, and the polyurethane elastomer inner sheath 3 is formed with a connecting rib 4 on the interval section between the power core 1 and the control core 2. The power core 1 comprises two power cores 5 and a grounding core 6, which are twisted together with a para-type fully aromatic copolyamide stretched fiber core material 7 to form a power core body, and the power core body is coated with an ETFE resin wrapped anti-friction layer 8. In one embodiment, the power core 5 comprises a power core conductor 12, a first para-type fully aromatic copolyamide stretched fiber plain weave 13 and an XLPE insulation layer 14. Specifically, the power core conductor 12 is formed by twisting a number of tinned copper wires with a diameter of 0.05 mm to 0.08 mm. In one embodiment, the grounding wire core 6 includes a grounding conductor 15, a second para-type wholly aromatic copolyamide stretched fiber plain woven mesh 16 and a PVC insulation layer 17. Specifically, the grounding conductor 15 is a plurality of soft copper wires with a wire diameter of 0.1 mm to 0.3 mm twisted and pressed to form a circular conductor structure.

[0024] The control wire core 2 includes two twisted wire cores 9 and a para-type fully aromatic copolyamide stretched fiber core material 7 twisted together to form a control wire core body, and the control wire core body is coated with an ETFE resin wrapped friction reduction layer 8. In one embodiment, the twisted wire core 9 includes two insulated wire cores 18 twisted together and twisted together with two para-type fully aromatic copolyamide stretched fiber filling core strips 19 to form a twisted wire core body, and the twisted wire core body is sequentially coated with an aluminum-plastic composite tape wrapped shielding layer 20 and a copper wire wrapped shielding layer 21. Further, the insulated wire core 18 includes an inner conductor 22, a third para-type fully aromatic copolyamide stretched fiber plain woven mesh 23 and a PP insulation layer 24. Specifically, the inner conductor 22 is formed by twisting a number of tinned copper monofilaments with a diameter of 0.02mm to 0.04mm. In one embodiment, the aluminum-plastic composite tape wrapped shielding layer 20 is an aluminum-plastic composite tape unidirectional spiral overlapping wrapped structure, and the aluminum-plastic composite tape includes an aluminum foil outer layer and a PET film inner layer. In one embodiment, the copper wire wrapped shielding layer 21 is formed by mixed unidirectional spiral winding of two tinned copper wires with different wire diameters and a wire diameter ratio between 0.9 and 1, and the shielding density is 90% to 95%.

[0025] The polyurethane elastomer inner sheath 3 is coated with a polyurethane elastomer outer sheath 10 and an EVA wear-resistant protective layer 11 in sequence.

[0026] The above are only specific implementations of the present application, but the protection scope of the application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. Anti-bending and anti-deformation electric vehicle charging cable, characterized by: The invention comprises a power line core (1) and a control line core (2) arranged side by side and spaced apart, which are jointly coated in a polyurethane elastomer inner sheath (3) to form a double-core integrated cable core, wherein the polyurethane elastomer inner sheath (3) is provided with a connecting rib (4) on the interval section between the power line core (1) and the control line core (2), wherein the power line core (1) comprises two power line cores (5) and a ground line core (6) which are twisted together with a para-type fully aromatic copolyamide stretched fiber core material (7) to form a power line core body, wherein the power line core body is externally coated with an ETFE resin wrapped anti-friction layer (8), wherein the control line core (2) comprises two twisted pair cores (9) which are twisted together with a para-type fully aromatic copolyamide stretched fiber core material (7) to form a control line core body, wherein the control line core body is externally coated with an ETFE resin wrapped anti-friction layer (8), and the polyurethane elastomer inner sheath (3) is externally coated with a polyurethane elastomer outer sheath (10) and an EVA wear-resistant protective layer (11) in sequence.

2. The anti-bending and anti-deformation electric vehicle charging cable according to claim 1 is characterized in that: The power line core (5) comprises a power line core conductor (12), a first para-type fully aromatic copolyamide stretched fiber plain woven mesh (13), and an XLPE insulation layer (14).

3. The anti-bending and anti-deformation electric vehicle charging cable according to claim 2 is characterized in that: The power line core conductor (12) is formed by twisting a plurality of tinned copper wires with a diameter of 0.05 mm to 0.08 mm.

4. The anti-bending and anti-deformation electric vehicle charging cable according to claim 1 is characterized in that: The grounding wire core (6) comprises a grounding conductor (15), a second para-type fully aromatic copolyamide stretched fiber plain woven mesh (16), and a PVC insulation layer (17).

5. The anti-bending and anti-deformation electric vehicle charging cable according to claim 4 is characterized in that: The grounding conductor (15) is a circular conductor structure formed by twisting and pressing a plurality of soft copper wires with a wire diameter of 0.1 mm to 0.3 mm.

6. The anti-bending and anti-deformation electric vehicle charging cable according to claim 1 is characterized in that: The twisted pair wire core (9) comprises two insulated wire cores (18) twisted together with two para-type fully aromatic copolyamide stretched fiber filling core strips (19) to form a twisted pair wire core body, and the outside of the twisted pair wire core body is sequentially coated with an aluminum-plastic composite tape wrapped shielding layer (20) and a copper wire wrapped shielding layer (21).

7. The anti-bending and anti-deformation electric vehicle charging cable according to claim 6 is characterized in that: The insulated wire core (18) comprises an inner conductor (22), a third para-type fully aromatic copolyamide stretched fiber plain woven mesh (23) and a PP insulation layer (24).

8. The anti-bending and anti-deformation electric vehicle charging cable according to claim 7 is characterized in that: The inner conductor (22) is formed by twisting a plurality of tinned copper monofilaments with a diameter of 0.02 mm to 0.04 mm.

9. The anti-bending and anti-deformation electric vehicle charging cable according to claim 6, characterized in that: The aluminum-plastic composite tape wrapped shielding layer (20) is an aluminum-plastic composite tape unidirectional spirally overlapped wrapped structure, wherein the aluminum-plastic composite tape comprises an aluminum foil outer layer and a PET film inner layer.

10. The anti-bending and anti-deformation electric vehicle charging cable according to claim 6, characterized in that: The copper wire wrapped shielding layer (21) is formed by unidirectional spiral winding of two tinned copper wires of different wire diameters with a wire diameter ratio between 0.9 and 1, and the shielding density is 90% to 95%.

Images