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CN-122025273-A - High-temperature-resistant automobile cable and preparation method thereof

CN122025273ACN 122025273 ACN122025273 ACN 122025273ACN-122025273-A

Abstract

The invention relates to the technical field of automobile cables, in particular to a high-temperature-resistant automobile cable and a preparation method thereof. The technical scheme includes that the cable conductor, the crosslinked polyethylene insulating layer and the like are sequentially arranged from inside to outside. The inner side forms a cooling liquid channel filled with cooling working medium, the outer side forms a steam channel, and the steam channel is communicated with the channel inside the anti-seismic frame through the distributed micropores, and finally is discharged through a one-way valve at the end part of the outer protective layer. Meanwhile, damping gel and elastic foam are filled in the diamond-shaped structure of the anti-seismic frame, and an inner silica gel stabilizing layer and an outer silica gel stabilizing layer are combined to form a multistage energy-consumption anti-seismic system. On the basis of ensuring electrical insulation and mechanical protection, the invention realizes efficient active heat dissipation and excellent broadband vibration resistance, and the preparation method realizes integrated formation of a complex multilayer structure through sequential construction and functional integration.

Inventors

  • WU XIANGHONG

Assignees

  • 江西英泰格瑞智能制造有限公司

Dates

Publication Date
20260512
Application Date
20260331

Claims (10)

  1. 1. The utility model provides a high temperature resistant car cable, includes outer protective layer (1) and a plurality of elastic rubber protection pad (2), its characterized in that still includes: The automobile cable comprises a crosslinked polyethylene insulating layer (6) and a cable conductor (7) which are arranged in an outer protective layer (1), wherein a snowflake type elastic shock-resistant frame (5) is arranged between the outer protective layer (1) and the crosslinked polyethylene insulating layer (6), and the automobile cable further comprises a heat-resistant radiating component arranged on the outer side of the snowflake type elastic shock-resistant frame (5); The heat-resistant heat dissipation assembly comprises an inner anti-corrosion layer (4) and an outer breathable layer (3) which are arranged on the inner side and the outer side of a snowflake-shaped elastic anti-vibration frame (5), wherein the inner anti-corrosion layer (4) is attached to a crosslinked polyethylene insulating layer (6), a cooling liquid channel (8) is formed in a gap between the inner anti-corrosion layer (4) and the crosslinked polyethylene insulating layer (6) for cooling liquid to flow, an outer protection layer (1) is attached to the outer breathable layer (3), a steam channel (9) is formed in a gap between the outer protection layer (1) and the outer breathable layer (3) for steam to flow, through holes (10) are formed in the outer breathable layer (3), the inner anti-corrosion layer (4) and the inner side of the snowflake-shaped elastic anti-vibration frame (5), a cooling liquid communicating pipe (20) is arranged in the inner side of the snowflake-shaped elastic anti-vibration frame (5) and used for communicating the plurality of cooling liquid channels (8), a protection layer channel (11) is formed in the inner side of the outer protection layer (1), the protection layer (11) is located at the end of the outer protection layer (1), an exhaust port is formed in the end of the outer protection layer (1), and the end of the outer protection layer (1) is located at a position of a unidirectional circulation assembly.
  2. 2. The high-temperature-resistant automobile cable according to claim 1, wherein the unidirectional circulation assembly is mounted at the end part of the outer protection layer (1) through a fixing frame (13), a sliding shaft (14) is arranged in the fixing frame (13) in a sliding mode, a sealing plug (12) is fixedly arranged at one end of the sliding shaft (14), a spring (15) is sleeved on the outer wall of the sliding shaft (14), the sealing plug (12) is attached to the inner part of the outer protection layer (1), one end of the spring (15) is fixedly arranged on the lower surface of the fixing frame (13), and the other end of the spring (15) is fixedly arranged on the upper surface of the sealing plug (12).
  3. 3. The high-temperature-resistant automobile cable according to claim 1, wherein the outer protective layer (1) is made of polyvinyl chloride materials, a plurality of elastic rubber protective pads (2) are arranged on the outer wall of the outer protective layer (1) in a ring-shaped array, the crosslinked polyethylene insulating layer (6) is arranged between the outer protective layer (1) and the cable conductor (7), and the crosslinked polyethylene insulating layer (6) and the cable conductor (7) are filled with flame retardant layers (21).
  4. 4. A high temperature resistant automotive cable according to claim 2, characterized in that the outer wall of the sealing plug (12) is provided with a gasket, and the gasket is attached to the inner wall of the outer protective layer (1).
  5. 5. A high temperature resistant automotive cable according to claim 1, characterized in that the automotive cable further comprises a cable anti-vibration assembly arranged between the outer protective layer (1) and the crosslinked polyethylene insulation layer (6); The cable anti-seismic mechanism comprises stable anti-seismic layers (18) arranged on the inner side and the outer side of a snowflake-shaped elastic anti-seismic frame (5), the stable anti-seismic layers (18) are made of silicone rubber materials, the snowflake-shaped elastic anti-seismic frame (5) is composed of a diamond frame and an arc frame, a damping gel tube (16) is arranged in the middle of the diamond frame, the diamond frame and the damping gel tube (16) are filled through elastic filling (17), and the elastic filling (17) is made of polyurethane foam materials.
  6. 6. The high-temperature-resistant automobile cable according to claim 5, wherein the two stable anti-seismic layers (18) are respectively arranged on the inner side and the outer side of the outer wall of the diamond-shaped frame, and the two stable anti-seismic layers (18) are respectively attached to the outer protective layer (1) and the crosslinked polyethylene insulating layer (6).
  7. 7. The high-temperature-resistant automobile cable according to claim 6, wherein brackets are arranged on two sides of the outer wall of the diamond-shaped frame, and the brackets are respectively propped against the outer protective layer (1) and the crosslinked polyethylene insulating layer (6).
  8. 8. The high-temperature-resistant automobile cable according to claim 5, wherein the cooling liquid communicating pipe (20) is installed inside the snowflake type elastic shock-resistant frame (5) and the stable shock-resistant layer (18) and is used for communicating cooling liquid channels (8) on two sides of the snowflake type elastic shock-resistant frame (5).
  9. 9. The high-temperature-resistant automobile cable according to claim 5, wherein the outer ventilation layer (3) and the inner anti-corrosion layer (4) are respectively arranged on the inner side and the outer side of the arc-shaped frame, exhaust micropores (19) are formed in the inner side of the arc-shaped frame, the outer ventilation layer (3), the inner anti-corrosion layer (4) and the exhaust micropores (19) in the inner side of the arc-shaped frame are communicated, and the cooling liquid channel (8), the inner anti-corrosion layer (4), the arc-shaped frame, the outer ventilation layer (3), the steam channel (9) and the protection layer channel (11) are communicated.
  10. 10. A method for preparing a high temperature resistant automotive cable, which is applied to the high temperature resistant automotive cable as claimed in any one of claims 1 to 9, and is characterized by comprising the following steps: s1, providing a plurality of cable conductors (7), coating a crosslinked polyethylene insulating layer (6) on the cable conductors, and filling a flame-retardant layer (21) between the crosslinked polyethylene insulating layer (6) and the cable conductors (7); S2, sequentially arranging an inner side anti-corrosion layer (4), a snowflake type elastic anti-seismic frame (5) formed by a diamond frame and an arc frame, an outer side ventilation layer (3) and a stable anti-seismic layer (18) on the periphery of the crosslinked polyethylene insulating layer (6), enabling the inner side anti-corrosion layer (4) to be attached to the crosslinked polyethylene insulating layer (6) to form a cooling liquid channel (8), enabling a steam channel (9) to be formed between the outer side ventilation layer (3) and a subsequently coated outer protective layer (1), arranging a damping gel tube (16) in the middle of the diamond frame, filling gaps by elastic filling (17), and arranging a cooling liquid communicating pipe (20) in the snowflake type elastic anti-seismic frame (5) to be communicated with the cooling liquid channel (8); S3, providing an outer protective layer (1), arranging a protective layer channel (11) in the outer protective layer, installing a one-way circulation assembly at the end of the outer protective layer, arranging the structure obtained in the step S2 in the outer protective layer (1), ensuring that an outer breathable layer (3) is attached to the outer protective layer (1), enabling a cooling liquid channel (8), an inner anticorrosive layer (4), exhaust micropores (19) in the arc-shaped frame, the outer breathable layer (3), a steam channel (9) and the protective layer channel (11) to be mutually communicated, and finally arranging a plurality of elastic rubber protective pads (2) on the outer wall of the outer protective layer (1).

Description

High-temperature-resistant automobile cable and preparation method thereof Technical Field The invention relates to the technical field of automobile cables, in particular to a high-temperature-resistant automobile cable and a preparation method thereof. Background With the continuous improvement of electrification and intelligence of automobiles, electronic and electric equipment in engine cabins and chassis areas are increasingly dense, and required power and signal transmission cables face increasingly severe working environments. In particular, hybrid and pure electric vehicles, the high-current loop and the vicinity of the high-power electronic unit thereof require cables to withstand environmental temperatures and electromagnetic interference far higher than those of conventional vehicles for a long period of time. At present, the high-temperature-resistant cable of the automobile mainly depends on the performance improvement of the material, such as the adoption of crosslinked polyethylene, silicon rubber, polytetrafluoroethylene and the like as insulating materials to improve the temperature resistance level. In the aspect of mechanical protection, a passive protection structure such as thickening an insulating layer, adding a woven shielding or externally wrapping a corrugated pipe, an anti-abrasion adhesive tape and the like is generally adopted. For heat dissipation requirements, the prior art mostly reduces resistance heating by increasing the sectional area of a conductor or dissipates heat by relying on natural convection of air outside the cable, and lacks an active and efficient cable body heat dissipation mechanism. However, in the prior art, under a closed high-temperature environment such as an engine compartment, heat accumulated by a heating conductor and an insulating layer is difficult to be effectively conducted out only by relying on material temperature resistance and passive air heat dissipation. The insulation material is easy to cause accelerated thermal aging, the electrical performance is reduced, and even potential safety hazards such as insulation failure are caused. Therefore, the application provides a high-temperature-resistant automobile cable and a preparation method thereof. Disclosure of Invention The invention aims to solve the problems of easy aging and insufficient reliability of the traditional cable under high temperature and vibration working conditions in the background technology, and provides a high-temperature-resistant automobile cable and a preparation method thereof. According to the technical scheme, the high-temperature-resistant automobile cable comprises an outer protective layer and a plurality of elastic rubber protective pads, wherein the outer protective layer is made of polyvinyl chloride materials, the plurality of elastic rubber protective pads are arranged on the outer wall of the outer protective layer in an annular array mode, a plurality of cable conductors are arranged in the middle of the outer protective layer, a crosslinked polyethylene insulating layer is arranged between the outer protective layer and the cable conductors, the crosslinked polyethylene insulating layer and the cable conductors are filled through flame retardant layers, and a snowflake type elastic shock-resistant frame is arranged between the outer protective layer and the crosslinked polyethylene insulating layer; The heat-resistant heat dissipation assembly comprises an inner anti-corrosion layer and an outer breathable layer, wherein the inner anti-corrosion layer and the outer breathable layer are arranged on the inner side and the outer side of the snowflake-shaped elastic anti-vibration frame, the inner anti-corrosion layer is attached to the crosslinked polyethylene insulating layer, a cooling liquid channel is formed between the inner anti-corrosion layer and the crosslinked polyethylene insulating layer for cooling liquid to flow, the outer protective layer is attached to the outer breathable layer, a steam channel is formed between the outer protective layer and the outer breathable layer for steam to flow, through holes are formed in the outer breathable layer, the inner anti-corrosion layer and the inner part of the snowflake-shaped elastic anti-vibration frame, a cooling liquid communicating pipe is arranged in the inner part of the snowflake-shaped elastic anti-vibration frame and used for communicating the plurality of cooling liquid channels, a protective layer channel is formed in the inner part of the outer protective layer, the protective layer channel is located at the end part of the outer protective layer, and an exhaust port is arranged at the position of the exhaust port. Optionally, the one-way circulation subassembly is installed at outer protective layer tip through the mount, just the inside slip of mount is provided with the slide shaft, slide shaft one end is fixed to be provided with the sealing plug, just slide shaft outer wall cover is