High-power temperature measurement liquid cooling charging pile cable

Abstract

The utility model relates to the field of liquid cooling charging pile cable production, in particular to a high-power temperature measurement liquid cooling charging pile cable, which comprises a sheath, two power lines are arranged in the sheath, a temperature sensing unit and a ground wire are arranged between the two power lines, the temperature sensing unit is positioned above the ground wire, and a control line is arranged on the upper side of the temperature sensing unit. The power wire core and the ground wire core of the cable adopt a mode of combining the cooling pipe and the conductor, a large amount of heat generated by high-power transmission of the power wire core and the ground wire core is taken away through circulating flow of cooling liquid, the temperature of the conductor is reduced, the charging efficiency is improved, the service life of the cable is prolonged, the weight of the cable is reduced, and use is more convenient; in addition, the control wire core conductors and the signal wire core conductors are formed by combining the tinned copper wires and the copper foil wires, the tensile strength of the single copper foil wire is not lower than 40N, and the high temperature resistance is not lower than 400 DEG C, so that the cable has excellent tensile, bending-resistant and high-temperature-resistant performance.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of liquid cooling charging pile cable production, in particular to a kind of high-power temperature measurement liquid cooling charging pile cable. BACKGROUND

[0002] With the rapid development of new energy vehicle technology, the market demand is expanding, the number of charging piles is also increasing;Most of the new energy vehicles are currently charged to realize power supply, but in the time of power supply, new energy vehicle charging time is much longer than traditional internal combustion engine vehicle refueling time;In order to save time, charging pile as an important charging supporting facility of new energy vehicle needs to improve the charging efficiency of charging pile (that is, improve the transmission current of charging cable) under the premise of ensuring safety, but improving the charging efficiency will cause a large amount of heat of cable, so that the cable is in high temperature state for a long time, long-term high temperature operation will reduce the service life of cable, and cause adverse consequences to cable;Therefore, a charging pile cable capable of real-time measurement and control of cable cooling is required. SUMMARY

[0003] The utility model discloses a kind of high-power temperature measurement liquid cooling charging pile cables to solve the above problems.

[0004] The utility model discloses the above-mentioned purposes are realized by the following technical solutions:

[0005] A kind of high-power temperature measurement liquid cooling charging pile cable, including sheath, two power lines are arranged in the sheath, temperature sensing unit and ground wire are arranged between the two power lines, temperature sensing unit is located above the two power lines, ground wire is located below the two power lines, control line is arranged on the upper side of temperature sensing unit, signal line is arranged on the both sides of control line, outer cooling pipe is arranged on the side of the two signal lines away from each other, auxiliary line is arranged on the both sides of ground wire, the gap in the sheath is filled with filling material;

[0006] The power line includes power line core cooling pipe, power line core conductor is wrapped outside the power line core cooling pipe, power line core insulating layer is wrapped outside the power line core conductor;

[0007] The ground wire includes ground wire core cooling pipe, ground wire core conductor is wrapped outside the ground wire core cooling pipe, ground wire core insulating layer is wrapped outside the ground wire core conductor;

[0008] Control line includes control line core inner protective layer, control line core shielding layer is nested in the inner wall of control line core inner protective layer, a plurality of control line core conductors are arranged on the inner side of control line core shielding layer, control line core insulating layer is wrapped outside each control line core conductor;

[0009] The signal line comprises a signal line core inner protective layer, the inner wall of the signal line core inner protective layer is nested with a signal line core shielding layer, and two signal line core conductors are arranged inside the signal line core shielding layer, and the outer side of each signal line core conductor is wrapped with a signal line core insulating layer.

[0010] The auxiliary line comprises an auxiliary line core conductor, and the outer side of the auxiliary line core conductor is wrapped with an auxiliary line core insulating layer.

[0011] Preferably, the control line core conductor and the signal line core conductor are formed by twisting tinned copper wires and copper foil wires in different directions to form a layered structure, and the single-strand copper foil wire bundle is twisted by adding 5 copper foil wires in the center.

[0012] Preferably, the control line core insulating layer, the power line core insulating layer, the auxiliary line core insulating layer, the signal line core insulating layer and the ground line core insulating layer are all made of high-temperature-resistant cross-linked polyolefin insulating material.

[0013] Preferably, the control line core shielding layer and the signal line core shielding layer are both woven with thin aluminum-plastic composite tape and braided tin-plated copper wire with a weaving density of 80%.

[0014] Preferably, the control line core inner protective layer, the signal line core inner protective layer and the sheath are all made of high-temperature-resistant and high-flexibility polyurethane material.

[0015] Preferably, the power line core cooling pipe, the outer cooling pipe and the ground line core cooling pipe are all made of high-temperature-resistant, tensile and wear-resistant nylon material, and the auxiliary line core conductor is twisted into a strand by uniformly twisting 6 types of tinned copper wires.

[0016] Preferably, the filling material is high-temperature-resistant and high-tensile-strength PP material, and the temperature sensing unit adopts a high-temperature-resistant optical fiber sensor.

[0017] Compared with the prior art, the beneficial effects are as follows:

[0018] 1. The power line core and the ground line core of the cable adopt a combination of cooling pipes and conductors, and the large amount of heat generated by the power line core and the ground line core during high-power power transmission is taken away by circulating cooling liquid, so as to reduce the conductor temperature, improve the charging efficiency, prolong the service life of the cable, reduce the weight of the cable and make the cable more convenient to use.

[0019] 2. The control line core conductor and the signal line core conductor of the cable adopt a combination of tinned copper wires and copper foil wires, the single copper foil wire has a tensile strength of not less than 40N and a high-temperature resistance of not less than 400℃, so that the cable has excellent tensile, bending and high-temperature resistance.

[0020] 3, the cable control line core conductor and signal line core conductor cable is made of high tensile strength PP filling, the control line core shielding layer and the signal line core shielding layer adopt double shielding structure (thin aluminum plastic composite tape and tinned copper wire braiding), which improves the anti-interference ability and tensile and bending resistance of the cable, and the signal line core inner protective layer adopts high-temperature-resistant and high-flexibility polyurethane sheath material, which improves the softness and high-temperature resistance of the cable;

[0021] 4, the cable temperature sensing unit adopts a high-temperature-resistant optical fiber sensor, which measures the internal temperature change of the cable in a distributed manner, and the high-temperature-resistant optical fiber generates corresponding changes in the transmission process under the influence of the internal temperature of the cable, which is captured by the detector and converted into an electrical signal output, which can be displayed after being received and processed. The internal temperature of the cable, according to the actual situation, the use of the charging gun can be adjusted, the safety performance of the charging gun is improved and the service life is prolonged;

[0022] 5, the cable power line core cooling pipe, outer cooling pipe and ground wire core cooling pipe are made of high-temperature-resistant and wear-resistant nylon material, which improves the tensile and wear-resistant performance; in addition to the inner cooling pipe of the power line core and the ground wire core, two cooling pipes are placed between the power line core and the signal line during the assembly of the cable, which reduces the internal temperature of the cable through the circulation of the cooling liquid, improves the charging efficiency, and prolongs the service life of the cable;

[0023] 6, the cable sheath is made of high-softness, high-temperature-resistant and wear-resistant polyurethane sheath material, which makes the cable core arrangement more compact and stable through semi-extrusion, and improves the softness, high-temperature resistance and wear resistance of the cable. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creating any creative labor.

[0025] Figure 1 is a structural schematic view of a high-power temperature measurement liquid-cooled charging pile cable according to the present application.

[0026] The following is an explanation of the reference signs:

[0027] 1. Control conductor; 2. Control insulation layer; 3. Control shield; 4. Inner sheath; 5. Temperature sensing unit; 6. Power conductor cooling tube; 7. Power conductor; 8. Power insulation layer; 9. Auxiliary conductor; 10. Auxiliary insulation layer; 11. Signal conductor; 12. Signal insulation layer; 13. Signal shield; 14. Inner sheath; 15. Outer cooling tube; 16. Filler material; 17. Ground cooling tube; 18. Ground conductor; 19. Ground insulation layer; 20. Sheath. Detailed Implementation

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] The present invention will be further described below with reference to the accompanying drawings:

[0030] like Figure 1 As shown, a high-power temperature-measuring liquid-cooled charging pile cable includes a sheath 20. Inside the sheath 20 are two power lines, with a temperature sensing unit 5 and a ground wire between them. The temperature sensing unit 5 is located above the two power lines, and the ground wire is located below them. A control line is located above the temperature sensing unit 5, and signal lines are located on both sides of the control line. An outer cooling pipe 15 is located on the side of each of the two signal lines furthest from each other. Auxiliary lines are located on both sides of the ground wire. The gaps inside the sheath 20 are filled with filler material 16. Each power line includes a power core cooling pipe 6, with a power core conductor 7 wrapped around the outside of the power core cooling pipe 6, and a power core insulation layer 8 wrapped around the outside of the power core conductor 7. The ground wire includes a ground core cooling pipe 17. 7. The outer side is wrapped with a ground conductor 18, and the outer side of the ground conductor 18 is wrapped with a ground insulation layer 19; the control line includes a control conductor inner sheath 4, the inner wall of the control conductor inner sheath 4 is nested with a control conductor shielding layer 3, and multiple control conductors 1 are provided inside the control conductor shielding layer 3, and each control conductor 1 is wrapped with a control conductor insulation layer 2; the signal line includes a signal conductor inner sheath 14, the inner wall of the signal conductor inner sheath 14 is nested with a signal conductor shielding layer 13, and two signal conductors 11 are provided inside the signal conductor shielding layer 13, and each signal conductor 11 is wrapped with a signal conductor insulation layer 12; the auxiliary line includes an auxiliary conductor 9, and the outer side of the auxiliary conductor 9 is wrapped with an auxiliary conductor insulation layer 10.

[0031] In this embodiment: both the control conductor 1 and the signal conductor 11 are made of tinned copper wire and copper foil wire twisted in different directions to form a layered structure. The copper foil wire is formed by adding 5 copper foil wires to the center of a single strand bundle. The control conductor insulation layer 2, the power conductor insulation layer 8, the auxiliary conductor insulation layer 10, the signal conductor insulation layer 12, and the ground conductor insulation layer 19 are all made of high-temperature resistant cross-linked polyolefin insulation material. The control conductor shielding layer 3 and the signal conductor shielding layer 13 are both made of thin aluminum-plastic composite tape and tinned copper wire braided double shielding structure with a braiding density of 80%. The control conductor inner sheath 4, the signal conductor inner sheath 14, and the sheath 20 are all made of high-temperature resistant and highly flexible polyurethane material, which gives the conductor excellent tensile strength, bending resistance, and high-temperature resistance. The sheath 20 can improve the cable's flexibility, high-temperature resistance, bending resistance, and abrasion resistance.

[0032] In this embodiment: the power core cooling tube 6, the outer cooling tube 15, and the ground core cooling tube 17 are all made of high-temperature resistant, tensile-resistant, and wear-resistant nylon material. The auxiliary core conductor 9 is made of 6-type tin-plated copper wire that is uniformly bundled and twisted into strands. The filler material 16 is high-temperature resistant, high-tensile-resistant reinforced PP material. The temperature sensing unit 5 is made of high-temperature resistant fiber optic sensor. When the cable is assembled, it is densely filled and rounded to improve the cable's tensile and bending resistance. The temperature sensing unit 5 can change accordingly during transmission due to the influence of the internal temperature of the cable after the laser is shone into the high-temperature resistant temperature-sensing fiber optic cable.

[0033] Working principle: Both the control conductor 1 and the signal conductor 11 are made of tinned copper wire and copper foil wire. Five copper foil wires are added to the center of the single strand bundle, and then each layer is twisted in a different direction. The insulation layer 2 of the control conductor and the insulation layer 12 of the signal conductor are made of high-temperature resistant cross-linked polyolefin insulation material by extrusion. The shielding layer 3 of the control conductor and the shielding layer 13 of the signal conductor are both made of thin aluminum-plastic composite tape + 80% tinned copper wire braided double shielding structure. The inner sheath layer 4 of the control conductor and the inner sheath layer 14 of the signal conductor are both made of high-temperature resistant and highly flexible polyurethane sheath material, which gives the conductor excellent tensile strength, bending resistance and high temperature resistance.

[0034] Temperature sensing unit 5 uses a high-temperature resistant fiber optic sensor, which is placed close to the power core during cabling. After the laser is shone into the high-temperature resistant temperature sensing fiber, it is affected by the internal temperature of the cable during transmission and changes accordingly. After being captured and processed, the current cable operating temperature is displayed. If the temperature rise is normal, the charging gun can continue to be used. If the temperature rise is high, the cooling speed of the cooling water should be accelerated or the charging gun should be replaced to improve the safety performance of the charging gun and extend its service life.

[0035] Both the power conductor cooling tube 6 and the ground conductor cooling tube 17 are made of high-temperature resistant, tensile-resistant, and wear-resistant nylon. Coolant is filled into the cooling tubes, and the circulating coolant carries away the large amount of heat generated by the high-power transmission of the conductor, thus reducing the conductor temperature. The power conductor 7 and the ground conductor 18 are first bundled into single strands and then evenly arranged and twisted in a ring outside the cooling tube to facilitate uniform heat dissipation. The power conductor insulation layer 8 and the ground conductor insulation layer 19 are produced by extrusion using high-temperature resistant cross-linked polyolefin insulation material.

[0036] The auxiliary conductor 9 is made of 6-type tinned copper wire, which is uniformly bundled and twisted into strands, and then re-stretched into shape using a regular stranding structure; the auxiliary conductor insulation layer 10 is made of high-temperature resistant cross-linked polyolefin insulation material, produced by extrusion.

[0037] The outer cooling pipe 15 is made of high-temperature resistant, tensile-resistant and wear-resistant nylon material. When the cable is assembled, it is located in the gap between the main core and the signal core. The coolant circulates to provide secondary heat dissipation for the cable. The filler material 16 is made of high-temperature resistant, high-tensile-strength reinforced PP material. When the cable is assembled, it is densely filled and rounded to improve the cable's tensile and bending resistance.

[0038] The sheath 20 is made of highly flexible, high-temperature resistant, and wear-resistant polyurethane sheath material. The semi-extrusion production process makes the cable core arrangement more compact and stable, improving the cable's flexibility, high-temperature resistance, bending resistance, and wear resistance.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A high-power temperature-measuring liquid-cooled charging pile cable, characterized in that: Includes a sheath (20), inside which are provided two power lines, between which are provided a temperature sensing unit (5) and a ground wire, the temperature sensing unit (5) is located above the two power lines, the ground wire is located below the two power lines, a control line is provided on the upper side of the temperature sensing unit (5), and signal lines are provided on both sides of the control line, an outer cooling pipe (15) is provided on the side of the two signal lines that are far apart from each other, and auxiliary lines are provided on both sides of the ground wire, and the gaps inside the sheath (20) are filled with filling material (16); The power line includes a power core cooling tube (6), the power core cooling tube (6) is wrapped with a power core conductor (7), and the power core conductor (7) is wrapped with a power core insulation layer (8). The ground wire includes a ground core cooling tube (17), the ground core cooling tube (17) is wrapped with a ground core conductor (18), and the ground core conductor (18) is wrapped with a ground core insulation layer (19). The control line includes a control core inner sheath (4), and a control core shielding layer (3) is nested inside the inner wall of the control core inner sheath (4). Multiple control core conductors (1) are provided inside the control core shielding layer (3), and each control core conductor (1) is wrapped with a control core insulation layer (2). The signal line includes a signal core inner sheath (14), and a signal core shielding layer (13) is nested inside the inner wall of the signal core inner sheath (14). The signal core shielding layer (13) has two signal core conductors (11) inside, and each signal core conductor (11) is wrapped with a signal core insulation layer (12). The auxiliary line includes an auxiliary conductor core (9), and the auxiliary conductor core (9) is wrapped with an auxiliary insulation layer (10).

2. The high-power temperature-measuring liquid-cooled charging pile cable according to claim 1, characterized in that: Both the control conductor (1) and the signal conductor (11) are made of tin-plated copper wire and copper foil wire twisted in different directions to form a layered structure, and five copper foil wires are added to the center of the single strand of copper foil wire to form a twisted structure.

3. The high-power temperature-measuring liquid-cooled charging pile cable according to claim 1, characterized in that: The control core insulation layer (2), power core insulation layer (8), auxiliary core insulation layer (10), signal core insulation layer (12) and ground core insulation layer (19) are all made of high-temperature resistant cross-linked polyolefin insulation material.

4. The high-power temperature-measuring liquid-cooled charging pile cable according to claim 1, characterized in that: Both the control core shielding layer (3) and the signal core shielding layer (13) adopt a double shielding structure of thin aluminum-plastic composite tape and 80% tin-plated copper wire braiding.

5. The high-power temperature-measuring liquid-cooled charging pile cable according to claim 1, characterized in that: The inner sheath (4) of the control core, the inner sheath (14) of the signal core, and the sheath (20) are all made of high-temperature resistant and highly flexible polyurethane material.

6. The high-power temperature-measuring liquid-cooled charging pile cable according to claim 1, characterized in that: The power core cooling tube (6), the outer cooling tube (15) and the ground core cooling tube (17) are all made of high-temperature resistant, tensile-resistant and wear-resistant nylon material, and the auxiliary core conductor (9) is made of 6 types of tin-plated copper wire uniformly bundled and twisted into strands.

7. A high-power temperature-measuring liquid-cooled charging pile cable according to claim 1, characterized in that: The filling material (16) is a high-temperature resistant and high-tensile-strength reinforced PP material, and the temperature sensing unit (5) adopts a high-temperature resistant fiber optic sensor.

Images