High-temperature-resistant anti-interference charging pile power cable

Abstract

The utility model relates to the field of cables, and provides a high-temperature-resistant anti-interference type charging pile power cable. The objective of the utility model is to overcome the defects of a traditional power cable in the application of a charging pile, including improvement of current-carrying capacity, high temperature resistance, heat dissipation capability and mechanical strength. According to the main scheme, the cable comprises a cable core (1), a 125 DEG C cross-linked polyolefin insulating layer (3), a braided galvanized steel wire armor layer (4) and a 125 DEG C cross-linked polyolefin sheath layer (5) which are sequentially arranged from inside to outside. And cooling agents (2) are arranged among the layers. According to the utility model, the insulation performance, temperature resistance, current-carrying capacity, anti-interference capability, mechanical strength and heat dissipation efficiency of the cable are substantially improved, and the cable is suitable for complex and changeable working environments, especially new energy automobile charging scenes.

Description

Technical Field

[0001] The utility model relates to the field of cables and provides a high-temperature resistant and anti-interference charging pile power cable. Background Art

[0002] With the popularization of new energy vehicles and the rapid construction of charging infrastructure, the charging pile power cable, as a core component connecting the power grid and charging equipment, has received increasing attention for its technical background. The charging pile power cable not only carries the important task of transmitting electric energy, but also needs to meet the requirements of a complex and changeable working environment. Therefore, its research and development and application involve multiple technical fields. First of all, in terms of power transmission technology, the charging pile power cable needs to have efficient and stable power transmission capabilities. This requires that the cable conductor material has excellent conductivity to reduce the loss during power transmission. At the same time, the structural design of the cable also needs to be optimized to improve the current carrying capacity and heat dissipation performance of the cable to ensure the stable operation of the cable during charging. Secondly, the charging pile power cable also needs to have excellent electrical properties. Since higher voltages and currents may be generated during the charging process, the cable needs to be able to withstand these electrical stresses and maintain good insulation properties. In addition, the cable also needs to have a lower electrical impedance to reduce energy loss during power transmission and improve charging efficiency. Furthermore, the working environment of the charging pile power cable is usually more complex and may face a variety of harsh conditions such as high temperature, low temperature, humidity, and oil pollution. Therefore, the material selection of the cable needs to take into account factors such as its weather resistance, corrosion resistance and mechanical strength to ensure that the cable can maintain stable performance in various environments. In summary, the technical background of charging pile power cables covers multiple aspects such as power transmission, electrical performance, environmental adaptability and technological innovation. With the continuous expansion of the new energy vehicle market and the continuous advancement of charging technology, the research and development and application of charging pile power cables will continue to move to a higher level, providing strong support for the popularization of new energy vehicles and the construction of charging infrastructure.

[0003] Disadvantages of the above traditional technologies and their causes:

[0004] The disadvantages are:

[0005] 1. Traditional power cables have poor current carrying capacity and high temperature resistance. When the charging pile power supply shows large current fluctuations during peak hours, it is easy to cause the cable to overheat and performance to decline;

[0006] 2. Traditional power cables have poor heat dissipation capacity when working under high current conditions.

[0007] 3. Traditional power cables have low strength and do not have the performance of pressure resistance, tension resistance, drag resistance, weather resistance and anti-interference.

[0008] Cause:

[0009] 1. Traditional power cables use XLPE insulation material, which has excellent insulation performance, but the temperature resistance level is 90°C. Under high current conditions, it is easy to cause cable overheating and reduced insulation performance.

[0010] 2. Traditional cables all use self-heating, which makes it difficult to dissipate excess heat.

[0011] 3. Traditional cable designs use steel wire or steel belt reinforcement structures, which makes it difficult to ensure that the cable has both superior mechanical energy and superior bending performance. Utility Model Content

[0012] The purpose of this utility model is to solve the defects of traditional power cables in charging pile applications, including improving current carrying capacity, high temperature resistance, heat dissipation capacity and mechanical strength. Key technical points include the use of Class 5 copper conductors and 125°C cross-linked polyolefin insulation and sheath layers, as well as braided galvanized steel wire armor layers and external heat dissipation agents to improve the overall performance of the cable. Compared with traditional technologies, this utility model significantly improves the insulation performance, temperature resistance, current carrying capacity, anti-interference ability, mechanical strength and heat dissipation efficiency of the cable, and is suitable for complex and changeable working environments, especially new energy vehicle charging scenarios.

[0013] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0014] A high temperature resistant and anti-interference charging pile power cable comprises a wire core, a 125°C cross-linked polyolefin insulation layer, a braided galvanized steel wire armor layer, and a 125°C cross-linked polyolefin sheath layer which are arranged in sequence from inside to outside.

[0015] In the above technical solution, a heat dissipation agent is applied to the outside of the wire core, the 125°C cross-linked polyolefin insulation layer, the braided galvanized steel wire armor layer, and the 125°C cross-linked polyolefin sheath layer, and the heat dissipation agent is aluminum oxide.

[0016] In the above technical solution, the wire core adopts Class 5 copper conductor.

[0017] In the above technical solution, the braided galvanized steel wire armor layer is woven from multiple strands of fine galvanized steel wires to form a mesh structure.

[0018] In the above technical solution, a microporous structure is formed on the surface of the polyolefin sheath layer by cross-linking at 125°C.

[0019] In the above technical solution, an electromagnetic shielding layer is arranged outside the braided galvanized steel wire armor layer.

[0020] The utility model solves many technical problems of traditional power cables in new energy vehicle charging scenarios through innovative structure and material design, and significantly improves the performance of charging pile power cables.

[0021] 1. High current carrying capacity: The use of Category 5 copper conductor core and 125°C cross-linked polyolefin insulation layer improves the insulation performance and temperature resistance of the cable to 125°C. This design allows the cable to remain stable under high current conditions, reducing energy loss during power transmission, thereby improving charging efficiency.

[0022] 2. High temperature resistance and heat dissipation performance: In terms of structure, each layer of the cable of the utility model is coated with heat dissipation agent. Combined with the internal and external heat dissipation design, it effectively solves the heat dissipation problem of traditional cables under high current conditions and ensures the stable operation of the cable in high temperature environment.

[0023] 3. High mechanical properties: By designing a braided galvanized steel wire armor layer between the insulation layer and the sheath layer, the cable's anti-interference shielding ability is enhanced, while providing good resistance to mechanical external forces and tensile forces, thereby improving the cable's pressure resistance, tensile resistance, and dragging capabilities.

[0024] 4. Environmental adaptability and stability: The 125℃ cross-linked polyolefin sheath layer improves the weather resistance, wear resistance and corrosion resistance of the cable, ensuring that the cable can maintain stable performance in various complex environments and extend its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural diagram of the utility model.

[0026] Description of Reference Numerals

[0027] 1-wire core, 2-heat dissipation agent, 3-125℃ cross-linked polyolefin insulation layer, 4-braided galvanized steel wire armor layer, 5-125℃ cross-linked polyolefin sheath layer. DETAILED DESCRIPTION

[0028] The following is a detailed description of the embodiments of the present invention. Although the present invention will be described and illustrated in conjunction with some specific implementations, it should be noted that the present invention is not limited to these implementations. On the contrary, modifications or equivalent replacements made to the present invention should be included in the scope of the claims of the present invention.

[0029] In addition, in order to better illustrate the present invention, numerous specific details are given in the following specific embodiments. Those skilled in the art will understand that the present invention can also be implemented without these specific details.

[0030] Example 1

[0031] A high temperature resistant and anti-interference charging pile power cable is prepared, comprising the following steps:

[0032] 1. Wire core preparation: Use Category 5 copper conductor wire core, which has high conductivity and certain softness, making it easy to lay and drag.

[0033] 2. Preparation of insulation layer: A layer of 125℃ cross-linked polyolefin insulation layer is wrapped around the wire core. This insulation layer significantly improves the insulation performance of the cable, with a temperature resistance grade of 125℃ and good weather resistance and wear resistance.

[0034] 3. Armor layer design: A layer of braided galvanized steel wire armor layer is designed outside the insulation layer. This layer not only provides anti-interference shielding capability, but also provides good resistance to mechanical external forces and tensile strength.

[0035] 4. Sheath preparation: Wrap a layer of 125℃ cross-linked polyolefin sheath (marked as ⑤) outside the armor layer to further enhance the weather resistance and wear resistance of the cable.

[0036] 5. Apply heat dissipation agent: Apply heat dissipation agent evenly on the outside of each layer of the insulation layer, armor layer and sheath layer to ensure that the cable can dissipate excess heat in time during operation, maintain stability and extend service life.

[0037] Example 2

[0038] On the basis of Example 1, the heat dissipation performance of the cable is further optimized, and the specific steps are as follows:

[0039] 1. Wire core and insulation layer: Maintain the same Class 5 copper conductor wire core and 125°C cross-linked polyolefin insulation layer as in Example 1.

[0040] 2. A possible optimization of the armor layer: The armor layer adopts a double-layer braided galvanized steel wire structure to enhance anti-interference and mechanical protection performance.

[0041] 3. A possible improvement to the sheath layer: The sheath layer uses a double layer of 125°C cross-linked polyolefin material to improve the overall wear resistance and weather resistance of the cable.

[0042] 4. A possible improvement on heat dissipation: Based on the original heat sink, microporous heat dissipation technology is introduced to form a microporous structure on the surface of the sheath layer to increase the heat dissipation area and further improve the heat dissipation efficiency.

[0043] Through the above embodiments, the utility model patent realizes the application of new energy vehicle charging piles, providing a power cable with high current carrying capacity, high temperature resistance, excellent heat dissipation and high mechanical properties. The cable effectively solves the heat dissipation problem of traditional cables under high temperature and high current carrying conditions, improves the stability and life of the cable, and has good anti-interference and mechanical protection capabilities, providing important technical support for new energy vehicle charging infrastructure.

[0044] Example 3

[0045] Charging pile cables may generate strong electromagnetic fields when operating at high currents, which may interfere with surrounding electronic equipment. An electromagnetic shielding layer is provided outside the braided galvanized steel wire armor layer to improve the cable's anti-interference ability.

Claims

1. A high temperature resistant and anti-interference charging pile power cable, characterized in that: It comprises a wire core (1), a 125°C cross-linked polyolefin insulation layer (3), a braided galvanized steel wire armor layer (4), and a 125°C cross-linked polyolefin sheath layer (5) which are arranged in sequence from the inside to the outside.

2. A high temperature resistant and anti-interference charging pile power cable according to claim 1, characterized in that: A heat dissipation agent (2) is applied to the outside of the wire core (1), the 125°C cross-linked polyolefin insulation layer (3), the braided galvanized steel wire armor layer (4), and the 125°C cross-linked polyolefin sheath layer (5).

3. A high temperature resistant and anti-interference charging pile power cable according to claim 1, characterized in that: The wire core (1) adopts Class 5 copper conductor.

4. A high temperature resistant and anti-interference charging pile power cable according to claim 1, characterized in that: The braided galvanized steel wire armor layer (4) is braided from a plurality of fine galvanized steel wires to form a mesh structure.

5. A high temperature resistant and anti-interference charging pile power cable according to claim 1, characterized in that: A microporous structure is formed on the surface of the polyolefin sheath layer (5) cross-linked at 125°C.

6. A high temperature resistant and anti-interference charging pile power cable according to claim 1, characterized in that: An electromagnetic shielding layer is arranged outside the braided galvanized steel wire armor layer (4).

7. A high temperature resistant and anti-interference charging pile power cable according to claim 1, characterized in that: The heat dissipator is aluminum oxide.

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