Liquid-cooled photoelectric composite cable

Abstract

The utility model belongs to the technical field of automobile parts, and discloses a liquid cooling photoelectric composite cable, which comprises a liquid cooling pipeline, a plurality of optical fiber units, a plurality of wire units and a total sheath layer, and the plurality of optical fiber units and the plurality of electric wire units are arranged around the periphery of the liquid cooling pipeline after being mutually twisted. When a large current flows through the electric wire unit, heat generated by the electric wire unit can be absorbed by a cooling liquid in the liquid cooling pipeline, so that the optical fiber unit is at a proper temperature in the working process, a sensor, a controller and an actuator which are connected with the optical fiber unit can quickly respond to each other, and the pilotless automobile can quickly judge the surrounding environment of the pilotless automobile. Safe driving; and the total sheath layer sleeves the peripheries of the optical fiber unit and the wire unit, so that the optical fiber unit, the wire unit and the liquid cooling pipeline can be protected, and the overall compression resistance and friction resistance of the liquid cooling photoelectric composite cable are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive parts, in particular to a liquid-cooled optical and electrical composite cable. Background Technique

[0002] With the development of the intelligent field, driverless vehicles have come into people's sight. A driverless vehicle is a vehicle that adds devices such as sensors, controllers, and actuators on the basis of an ordinary vehicle, and realizes intelligent information exchange with people, vehicles, roads, etc. through an on-vehicle sensing system and an information terminal, enabling the vehicle to have the ability of intelligent environment perception, automatically analyzing whether the vehicle is driving safely, enabling the vehicle to reach the destination according to people's wishes, and ultimately achieving the purpose of replacing manual operation. To ensure that the sensors, controllers, actuators and other devices can respond quickly, they are connected by optical fibers, and the remaining electrical components on the driverless vehicle are connected by wires.

[0003] However, the existing optical fibers and wires of driverless vehicles are separately routed, resulting in a very tight wiring space in the vehicle. An optical and electrical composite cable has been introduced on the market to solve the problem of separate routing of optical fibers and wires. However, when the existing optical and electrical composite cable is in use, since the current passing through the wire is relatively large and the heat of the wire is relatively high, the temperature of the optical fiber jointly stranded with the wire is too high, and the effect of optical fiber information transmission is affected. Eventually, the sensors, controllers, and actuators cannot respond quickly, the driverless vehicle cannot quickly judge its surrounding environment, and even traffic accidents may occur.

[0004] Therefore, there is an urgent need for a liquid-cooled optical and electrical composite cable to solve the above technical problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a liquid-cooled optical and electrical composite cable, which can solve the problem that the overall temperature of the optical fiber and the wire in the prior art is too high, affecting the response speed between the sensors, controllers, and actuators.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A liquid-cooled optical and electrical composite cable, comprising:

[0008] A liquid-cooling pipe filled with a coolant therein;

[0009] A plurality of optical fiber units and a plurality of wire units, the plurality of wire units and the plurality of optical fiber units are mutually stranded and then disposed around the outer periphery of the liquid-cooling pipe;

[0010] A total sheath layer covering the outer peripheries of the optical fiber units and the wire units.

[0011] As a preferred technical solution of the liquid-cooled optical and electrical composite cable, the liquid-cooled optical and electrical composite cable further includes a filler, and the filler is filled in the gaps among the liquid-cooled pipe, the optical fiber unit and the electrical wire unit.

[0012] As a preferred technical solution of the liquid-cooled optical and electrical composite cable, the liquid-cooled optical and electrical composite cable further includes a tensile member, and the tensile member is jointly stranded with the optical fiber unit and the electrical wire unit.

[0013] As a preferred technical solution of the liquid-cooled optical and electrical composite cable, the liquid-cooled pipe is a flexible pipe.

[0014] As a preferred technical solution of the liquid-cooled optical and electrical composite cable, the material of the liquid-cooled pipe is polytetrafluoroethylene.

[0015] As a preferred technical solution of the liquid-cooled optical and electrical composite cable, the optical fiber unit sequentially includes an optical fiber wire group and an optical fiber sheath layer from inside to outside, and the optical fiber wire group is formed by twisting two optical fiber cores with each other.

[0016] As a preferred technical solution of the liquid-cooled optical and electrical composite cable, the material of the optical fiber sheath layer is fluorinated ethylene propylene copolymer.

[0017] As a preferred technical solution of the liquid-cooled optical and electrical composite cable, the electrical wire unit sequentially includes four mutually stranded electrical wire groups, a shielding layer and an electrical wire sheath layer from inside to outside.

[0018] As a preferred technical solution of the liquid-cooled optical and electrical composite cable, the shielding layer is formed by winding a copper tape around the outer periphery of the electrical wire group;

[0019] Or, the shielding layer is formed by braiding copper wires.

[0020] As a preferred technical solution of the liquid-cooled optical and electrical composite cable, the electrical wire group includes two mutually stranded electrical wire cores and a fire-resistant tape, and the fire-resistant tape is wound around the outer peripheries of the two electrical wire cores.

[0021] The beneficial effects of the present utility model are as follows:

[0022] The present utility model provides a liquid-cooled optical and electrical composite cable, which includes a liquid-cooled pipe, a plurality of optical fiber units, a plurality of electrical wire units and an overall sheath layer. The liquid-cooled pipe is located at the central position, and a coolant is filled in the liquid-cooled pipe. After the plurality of optical fiber units and the plurality of electrical wire units are mutually stranded, they are arranged around the outer periphery of the liquid-cooled pipe. With such an arrangement, when a large current flows through the electrical wire unit, the heat generated by the electrical wire unit can be absorbed by the coolant in the liquid-cooled pipe, so that the optical fiber unit is at a suitable temperature during operation, ensuring that the sensors, controllers and actuators connected to the optical fiber unit can respond quickly, and ensuring that the driverless vehicle can quickly judge the surrounding environment and can drive safely. Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of the liquid-cooled optical and electrical composite cable provided by the present utility model;

[0024] Figure 2 is a schematic structural diagram of the electrical unit of the liquid-cooled optical and electrical composite cable provided by the present utility model;

[0025] Figure 3 is a preparation flow chart of the liquid-cooled optical and electrical composite cable provided by the present utility model.

[0026] In the figure:

[0027] 1. Liquid-cooling pipe;

[0028] 2. Optical fiber unit; 21. Optical fiber core; 22. Optical fiber sheath layer;

[0029] 3. Electrical wire unit; 31. Electrical wire group; 311. Electrical wire core; 312. Fire-resistant tape; 32. Shielding layer; 33. Electrical wire sheath layer;

[0030] 4. Total sheath layer; 5. Filler; 6. Tensile member. Detailed Embodiment

[0031] The present utility model will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. Additionally, it should be noted that for the convenience of description, only the parts related to the present utility model rather than all the structures are shown in the drawings.

[0032] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is lower than that of the second feature.

[0034] In the description of this embodiment, the orientation or positional relationships such as "upper", "lower", "right", etc. are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0035] As Figure 1 and Figure 2 As shown in

[0036] In this embodiment, the liquid-cooled optoelectronic composite cable further includes a filler 5. The filler 5 is filled in the gaps between the liquid-cooled pipe 1, the optical fiber units 2 and the wire units 3. The setting of the filler 5 can make the whole liquid-cooled optoelectronic composite cable more round and have higher compactness, reduce the occupied space of the liquid-cooled optoelectronic composite cable, release the wiring space of the driverless vehicle, and make the wiring of the driverless vehicle more concise. The filler 5 can be selected from a filling rope or a filling material, and no specific limitation is made here. The filling rope can be made of a mixed material of polypropylene and a flame retardant.

[0037] In this embodiment, the liquid-cooled optical and electrical composite cable further includes a tensile member 6, where the tensile member 6 is jointly stranded with the optical fiber unit 2 and the electrical wire unit 3. In this way, the tensile strength of the optical fiber unit 2 and the electrical wire unit 3 can be improved, and further the tensile strength of the liquid-cooled optical and electrical composite cable can be enhanced. Exemplarily, the tensile member 6 includes an aramid core and a copper tape, and the copper tape is coated on the outer periphery of the aramid core. Aramid has the properties of high strength, high temperature resistance, light weight, acid and alkali resistance, and insulation. Using aramid material as the tensile wire can ensure the service life of the optical fiber unit 2 and the electrical wire unit 3. The tensile member 6 can also be made of other materials, such as steel wire ropes, which are not specifically limited here.

[0038] In this embodiment, the liquid-cooled pipe 1 is a flexible pipe, so that the bending performance of the whole liquid-cooled optical and electrical composite cable can be improved, which is more convenient for the staff to route the cable of the driverless vehicle and reduces the wiring difficulty of the staff. The liquid-cooled pipe 1 can be made of polytetrafluoroethylene material. Polytetrafluoroethylene has stable chemical properties, strong corrosion resistance, strong sealing performance, and at the same time has insulation and good aging resistance. It can not only ensure the service life of the liquid-cooled pipe 1, but also make the liquid-cooled pipe 1 have insulation, further improving the insulation of the liquid-cooled optical and electrical composite cable and enhancing the safety factor during the use of the liquid-cooled optical and electrical composite cable. Of course, the liquid-cooled pipe 1 can also be made of other materials, such as nylon material and elastomer material. The selection of the material of the liquid-cooled pipe 1 is not specifically limited here.

[0039] In this embodiment, the optical fiber unit 2 sequentially includes an optical fiber wire group and an optical fiber sheath layer 22 from the inside to the outside. The optical fiber sheath layer 22 is sleeved on the outer periphery of the optical fiber wire group to protect the optical fiber wire group and prevent the performance of the optical fiber wire group from being affected by excessive extrusion. The optical fiber wire group is formed by stranding two optical fiber cores 21 with each other. In this way, the interference degree of information transmission between different optical fibers can be reduced, and the accuracy and rapidity of information transmission of the optical fiber unit 2 can be ensured. Since the liquid-cooled optical and electrical composite cable has multiple optical fiber units 2, the information that needs to be transmitted between the sensor, the controller and the actuator can be separately transmitted through multiple branches, which can further improve the response speed between the sensor, the controller and the actuator and improve the safety level when the driverless vehicle is driving. In this embodiment, the material of the optical fiber sheath layer 22 is fluorinated ethylene propylene copolymer. Fluorinated ethylene propylene copolymer not only has good mechanical properties and flexibility, but also has high insulation and flame retardancy. Good mechanical properties can ensure that the optical fiber sheath layer 22 has good extrusion resistance to protect the optical fiber wire group. Good flexibility can ensure the overall bending resistance of the optical fiber unit 2, so that the staff can route the liquid-cooled optical and electrical composite cable. High insulation and flame retardancy can ensure that the optical fiber unit 2 has good insulation and flame retardancy to ensure the insulation and flame retardancy of the liquid-cooled optical and electrical composite cable.

[0040] In this embodiment, the wire unit 3 sequentially includes four mutually twisted wire groups 31, a shielding layer 32, and a wire sheath layer 33 from the inside to the outside. After the four wire groups 31 are mutually twisted, the overall cross-section is square, which can ensure the stability of the overall structure of the wire unit 3. The setting of the shielding layer 32 can improve the ability of the wire group 31 to resist external electromagnetic interference and ensure the stability of current transmission in the liquid-cooled optical and electrical composite cable. The setting of the wire sheath layer 33 can ensure the voltage resistance of the wire unit 3 to better protect the wire group 31. Regarding the shielding layer 32, it can be formed by spirally winding a copper tape around the outer periphery of the wire group 31. Preferably, two copper tapes are spirally overlapped and wound from different directions of the wire group 31 to ensure the overall electromagnetic interference resistance effect of the shielding layer 32. Alternatively, the shielding layer 32 can also be formed by braiding copper wires, and no specific limitation is made here.

[0041] In this embodiment, the wire group 31 sequentially includes two mutually twisted core wires and a fire-resistant tape 312 from the inside to the outside, and the fire-resistant tape 312 is wound around the outer periphery of the two wire cores 311. Twisting the two wire cores 311 together can reduce the interference between different wire cores 311 and ensure the stability of current transmission in the liquid-cooled optical and electrical composite cable. The setting of the fire-resistant tape 312 can improve the fire resistance of the wire unit 3, so that even if the wire core 311 catches fire spontaneously, it will not affect the optical fiber unit 2, and the stability of the interaction between the sensor, controller, and actuator is ensured to the greatest extent.

[0042] As Figure 3 shown in, this embodiment provides a preparation method for preparing a liquid-cooled optical and electrical composite cable, and the preparation method includes the following steps:

[0043] Step 1: Fill the liquid-cooled pipe 1 with a coolant;

[0044] Step 2: Twist a plurality of optical fiber units 2 and wire units 3 together;

[0045] Step 3: Wind the twisted optical fiber units 2 and wire units 3 around the outer periphery of the liquid-cooled pipe 1;

[0046] Step 4: Coat the outer periphery of the optical fiber units 2 and wire units 3 with a total sheath material to form a total sheath layer 4.

[0047] In this embodiment, after step 4, the following steps are further included:

[0048] Step 5: Fill the filler 5 between the liquid-cooled pipe 1, the optical fiber units 2, and the wire units 3.

[0049] The preparation method of the liquid-cooled optical and electrical composite cable provided by this embodiment has simple preparation steps. During the use of the processed and formed liquid-cooled optical and electrical composite cable, it can avoid the overheating of the optical fiber unit 2 and the electrical wire unit 3, enabling rapid response among sensors, controllers, and actuators in new energy vehicles and ensuring the driving safety of new energy vehicles.

[0050] Obviously, the above-mentioned embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments, and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A liquid-cooled optical and electrical composite cable, characterized in that Comprising: A liquid cooling pipe (1) filled with a coolant inside; A plurality of optical fiber units (2) and a plurality of wire units (3), the plurality of wire units (3) and the plurality of optical fiber units (2) are twisted together and arranged around the outer periphery of the liquid cooling pipe (1); A total sheath layer (4) covering the outer peripheries of the optical fiber units (2) and the wire units (3).

2. The liquid-cooled optical and electrical composite cable according to claim 1, wherein The liquid cooling fiber-optic composite cable further includes a filler (5) filled in the gaps among the liquid cooling pipe (1), the optical fiber units (2), and the wire units (3).

3. The liquid-cooled optical and electrical composite cable according to claim 2, wherein, The liquid cooling fiber-optic composite cable further includes a tensile member (6) twisted together with the optical fiber units (2) and the wire units (3).

4. The liquid-cooled optical and electrical composite cable according to claim 1, wherein, The liquid cooling pipe (1) is a flexible pipe.

5. The liquid-cooled optical and electrical composite cable according to claim 4, characterized in that, The material of the liquid cooling pipe (1) is polytetrafluoroethylene.

6. The liquid-cooled optical and electrical composite cable according to claim 1, wherein, The optical fiber unit (2) sequentially includes an optical fiber wire group and an optical fiber sheath layer (22) from inside to outside, and the optical fiber wire group is formed by twisting two optical fiber cores (21) together.

7. The liquid-cooled optical and electrical composite cable according to claim 6, wherein, The material of the optical fiber sheath layer (22) is fluorinated ethylene propylene copolymer.

8. The liquid-cooled optical and electrical composite cable according to claim 1, wherein The wire unit (3) sequentially includes four mutually twisted wire groups (31), a shielding layer (32), and a wire sheath layer (33) from inside to outside.

9. The liquid-cooled optical and electrical composite cable according to claim 8, wherein The shielding layer (32) is formed by winding a copper tape around the outer periphery of the wire group (31); Or, the shielding layer (32) is formed by braiding copper wires.

10. The liquid-cooled optical and electrical composite cable according to claim 8, wherein, The wire group (31) includes two mutually twisted wire cores (311) and a fire-resistant tape (312) wound around the outer peripheries of the two wire cores (311).

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