Bending-resistant new energy automobile charging cable
By using a four-strand core structure and a specific sheath design, the wear problem caused by frequent bending during the charging process of new energy vehicle charging cables is solved, achieving higher bending strength and compressive strength, and extending the service life of the cable.
Patent Information
- Application Number
- CN202423253064.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2026-03-06
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Charging cables for new energy vehicles are prone to wear and tear during the charging process due to frequent dragging and bending, which affects their service life and reliability.
It adopts a four-strand core wire structure, and the outside consists of wrapping tape, fire-resistant PVC sheath, braided shielding layer and thermoplastic low smoke halogen-free flame-retardant sheath. The inside is equipped with filler strips and arc strips to improve bending strength and compressive strength. The arc strip design ensures that the core wires are not easy to shift or entangle. The external irregular cavity is filled with flame-retardant rope to enhance tensile strength.
It improves the cable's bending strength and roundness, enhances its compressive strength and cut resistance, and extends its service life.
Smart Images
Figure CN223977728U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cable technology, specifically to a bend-resistant charging cable for new energy vehicles. Background Technology
[0002] Charging cables for new energy vehicles are key components connecting electric vehicles to charging stations. They not only transmit electrical energy from the charging station to the vehicle but also integrate signal lines, control lines, and auxiliary power lines to ensure precise control and operational safety during the charging process. However, because charging cables are frequently dragged and bent during charging, they are susceptible to wear and damage, which in turn affects their overall lifespan and reliability. Utility Model Content
[0003] The purpose of this invention is to provide a bend-resistant charging cable for new energy vehicles to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a bend-resistant charging cable for new energy vehicles, comprising four core wires, all four core wires being extruded with a wrapping tape, the wrapping tape being extruded with a fire-resistant polyvinyl chloride sheath, the fire-resistant polyvinyl chloride sheath being extruded with a braided shielding layer, the braided shielding layer being extruded with a thermoplastic low-smoke halogen-free flame-retardant sheath, a filler strip being sleeved inside the wrapping tape, the filler strip having an arc-shaped recess on its side wall near the core wires, a straight strip block being integrally formed on the filler strip near the inner wall of the wrapping tape, two arc-shaped strips being fixedly provided on the straight strip block near the inner wall of the wrapping tape, the two arc-shaped strips being bent toward the two adjacent core wires respectively, one end of the arc-shaped strip being integrally formed with the straight strip block, and the other end of the arc-shaped strip abutting against the side wall of the straight strip block, the outer wall of the arc-shaped strip being tangent to the outer wall of the core wires.
[0005] Optionally, a hollow cavity is provided at the central axis of the filling strip, and the positive longitudinal section of the hollow cavity is a four-pointed star shape.
[0006] Optionally, the forward longitudinal section of the arc-shaped recess is a quarter circle, and the radius of the arc-shaped recess is equal to the outer diameter of the core wire.
[0007] Optionally, the outer wall of the core wire, the inner wall of the wrapping tape, and the outer wall of the arc-shaped strip together enclose an irregular cavity, and a flame-retardant filling rope is provided inside the irregular cavity.
[0008] Compared with existing technologies, this invention has the following advantages: This invention uses arc-shaped strips as fillers between adjacent core wires, ensuring that the core wires are less prone to misalignment or entanglement, improving the cable's roundness and bending strength. Furthermore, the structure formed by two arc-shaped strips located on the same straight block has excellent buffering and energy absorption effects, resulting in strong cable compressive strength. When an external blade cuts the cable longitudinally, the blade needs to make two cuts on a single arc-shaped strip to reach the core wire, increasing the difficulty of cutting the cable. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the structure of this utility model;
[0010] Figure 2 This is a schematic diagram of the structure of the filling strip, straight block and arc strip in this utility model.
[0011] In the diagram: 1. Core wire; 2. Wrapping tape; 3. Fire-resistant PVC sheath; 4. Braided shielding layer; 5. Thermoplastic low-smoke halogen-free flame-retardant sheath; 6. Filler strip; 7. Arc-shaped recess; 8. Straight strip; 9. Arc-shaped strip; 10. Hollow cavity; 11. Irregularly shaped cavity; 12. Flame-retardant filler rope. Detailed Implementation
[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0013] Example: Please refer to Figure 1 and Figure 2 This utility model provides a bend-resistant charging cable for new energy vehicles, comprising four core wires 1, which are a positive wire, a negative wire, a signal wire, and a monitoring wire with the same outer diameter. The four core wires 1 are collectively wrapped with a wrapping tape 2, which is then wrapped with a fire-resistant polyvinyl chloride sheath 3. The fire-resistant polyvinyl chloride sheath 3 is then wrapped with a braided shielding layer 4, and the braided shielding layer 4 is then wrapped with a thermoplastic low-smoke halogen-free flame-retardant sheath 5.
[0014] A filler strip 6 is sleeved inside the wrapping tape 2. The filler strip 6 is made of PP material through extrusion molding. A hollow cavity 10 is formed at the central axis of the filler strip 6. The positive longitudinal section of the hollow cavity 10 is a four-pointed star shape. An arc-shaped recess 7 is formed on the side wall of the filler strip 6 near the core wire 1. The positive longitudinal section of the arc-shaped recess 7 is a quarter circle. The radius of the arc-shaped recess 7 is equal to the outer diameter of the core wire 1.
[0015] A straight strip block 8 is integrally formed on the end of the filler strip 6 near the inner wall of the wrapping tape 2. Two arc-shaped strips 9 are fixedly provided on the end of the straight strip block 8 near the inner wall of the wrapping tape 2. The two arc-shaped strips 9 are bent towards the two adjacent core wires 1 respectively. One end of the arc-shaped strip 9 is integrally formed with the straight strip block 8, and the other end of the arc-shaped strip 9 abuts against the side wall of the straight strip block 8. The outer wall of the arc-shaped strip 9 is tangent to the outer wall of the core wire 1.
[0016] This invention uses arc-shaped strips 9 as fillers between adjacent core wires 1, ensuring that the core wires 1 are not prone to misalignment or entanglement, improving the roundness and bending strength of the cable. Furthermore, the structure formed by two arc-shaped strips 9 located on the same straight block 8 has excellent buffering and energy absorption effects, resulting in strong cable compressive strength. Figure 1 As shown, when the external blade cuts the cable longitudinally from top to bottom, the blade needs to make two cuts on the single arc-shaped strip 9 located above to reach the position of cutting the core wire 1. The arc-shaped strip 9 increases the difficulty of cutting the cable, making the cable have a good ability to resist external cutting damage.
[0017] In the above embodiment, the outer wall of the core wire 1, the inner wall of the wrapping tape 2, and the outer wall of the arc strip 9 together enclose an irregular cavity 11. The irregular cavity 11 is provided with a flame-retardant filling rope 12, which is a polypropylene filling rope with a circular longitudinal cross section, used to improve the tensile strength of the cable.
[0018] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A bend-resistant new energy vehicle charging cable, comprising four core wires (1), a wrapping tape (2) is collectively extruded outside the four core wires (1), a fire-resistant polyvinyl chloride sheath (3) is extruded outside the wrapping tape (2), a braided shielding layer (4) is extruded outside the fire-resistant polyvinyl chloride sheath (3), and a thermoplastic low-smoke halogen-free flame-retardant sheath (5) is extruded outside the braided shielding layer (4), characterized in that: The filling strip (6) is sleeved in the wrapping tape (2), an arc-shaped recess (7) is arranged on the filling strip (6) and close to the side wall of the core wire (1), a straight strip block (8) is integrally formed on the filling strip (6) and close to the end of the inner wall of the wrapping tape (2), two arc-shaped strips (9) are fixedly arranged on the straight strip block (8) and close to the end of the inner wall of the wrapping tape (2), the two arc-shaped strips (9) are respectively curved towards the direction of two adjacent core wires (1), one end of the arc-shaped strip (9) is integrally formed with the straight strip block (8), the other end of the arc-shaped strip (9) abuts against the side wall of the straight strip block (8), and the outer wall of the arc-shaped strip (9) is tangent to the outer wall of the core wire (1). 2. The bend-resistant new energy vehicle charging cable according to claim 1, characterized in that: A hollow cavity (10) is arranged at the center axis of the filling strip (6), and the front longitudinal section of the hollow cavity (10) is in the shape of a four-pointed star.
3. The bend-resistant new energy vehicle charging cable according to claim 1, characterized in that: The front longitudinal section of the arc-shaped recess (7) is in the shape of a quarter circle, and the radius of the arc-shaped recess (7) is equal to the outer diameter of the core wire (1).
4. The bend-resistant new energy vehicle charging cable according to claim 1, characterized in that: The outer wall of the core wire (1), the inner wall of the wrapping tape (2) and the outer wall of the arc-shaped strip (9) jointly enclose a special-shaped cavity (11), and a flame-retardant filling rope (12) is arranged in the special-shaped cavity (11).