Charging cable

Abstract

The utility model discloses a charging cable. The charging cable comprises an outer sheath layer; the power line unit is arranged in the outer sheath layer, and the power line unit is used for transmitting current; the heat uniformizing and insulating layer is arranged between the outer sheath layer and the power line unit, the two sides of the heat uniformizing and insulating layer are attached to the outer sheath layer and the power line unit respectively, and the heat uniformizing and insulating layer evenly disperses heat of the power line unit and prevents the heat from being transmitted to the outer sheath layer. The uniform heat insulation layer of the charging cable not only can prevent heat from being transmitted to the outer sheath layer, but also can enable the heat to be uniformly distributed, so that local overheating is more effectively avoided, and the heat insulation effect is better.

Description

Technical Field

[0001] This utility model relates to the field of wire and cable technology, and in particular to a charging cable. Background Technology

[0002] Charging cables in related technologies typically have an outer sheath and a heat insulation layer, with the heat insulation layer located inside the outer sheath. When a vehicle is charged using a charging cable, the power line generates heat. The heat insulation layer can prevent the heat from the power line from being transferred to the outer sheath, thereby reducing the surface temperature of the outer sheath.

[0003] However, due to the unreasonable structure of the insulation layer in the charging cable in the relevant technology, the insulation layer can only play a heat insulation role. When the heat generated by the power line is high, the heat is prone to local concentration and uneven heat distribution, which can easily lead to local temperature rise of the charging cable, reduce the heat insulation effect of the insulation layer, and thus reduce the service life of the charging cable. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide a charging cable whose uniform heat insulation layer not only prevents heat transfer to the outer sheath layer but also ensures uniform heat distribution, more effectively preventing localized overheating and providing better heat insulation.

[0005] To achieve the above objectives, a charging cable is proposed according to an embodiment of the present invention, comprising: an outer sheath layer; a power line unit disposed within the outer sheath layer and used for transmitting current; and a uniform heat insulation layer disposed between the outer sheath layer and the power line unit, wherein both sides of the uniform heat insulation layer are respectively attached to the outer sheath layer and the power line unit, and the uniform heat insulation layer uniformly disperses the heat of the power line unit and prevents the heat from being transferred to the outer sheath layer.

[0006] Thus, the uniform heat insulation layer of the charging cable according to the present invention can not only prevent heat from being transferred to the outer sheath layer, but also make the heat evenly distributed, thus more effectively avoiding local overheating and achieving better heat insulation effect.

[0007] According to some embodiments of the present invention, the uniform heat insulation layer extends circumferentially along the outer sheath layer.

[0008] According to some embodiments of the present application, the uniform heat insulation layer comprises: a first heat insulation sublayer, the first heat insulation sublayer extends along the circumference of the outer sheath layer, and the first heat insulation sublayer is used to prevent heat of the power line unit from being transmitted to the outer sheath layer; a first heat conduction sublayer, the first heat conduction sublayer is arranged on a side of the first heat insulation sublayer away from the outer sheath layer, and the first heat conduction sublayer is used to uniformly disperse heat of the power line unit.

[0009] According to some embodiments of the present application, the charging cable further comprises: a liquid cooling pipe, the power line unit comprises a positive electrode wire, a negative electrode wire and a ground wire, the liquid cooling pipe is arranged in the outer sheath layer, and the positive electrode wire and the negative electrode wire are respectively attached to radially opposite sides of the liquid cooling pipe, and the liquid cooling pipe is used for cooling liquid flow.

[0010] According to some embodiments of the present application, the central axis of the liquid cooling pipe coincides with the central axis of the outer sheath layer.

[0011] According to some embodiments of the present application, the positive electrode wire and the negative electrode wire extend along the circumference of the liquid cooling pipe, and the cross-sectional shape of the positive electrode wire and the cross-sectional shape of the negative electrode wire are both configured as a fan ring shape.

[0012] According to some embodiments of the present application, the charging cable further comprises: a control line unit, the control line unit is used to monitor the temperature of the cooling liquid in the liquid cooling pipe and control the flow rate of the cooling liquid, and the control line unit at least comprises: a plurality of control lines, the control line comprises a signal conductor and a signal insulating layer, the signal insulating layer wraps the signal conductor along the circumference of the signal conductor; a shielding layer, the shielding layer is arranged outside the control line and wraps a plurality of the control lines; a control line sheath layer, the control line sheath layer is arranged outside the shielding layer and wraps the shielding layer.

[0013] According to some embodiments of the present application, the liquid cooling pipe is made of at least one of polytetrafluoroethylene, polyketone and silicone rubber.

[0014] According to some embodiments of the present application, the positive electrode wire and the negative electrode wire both comprise: a power conductor; a heat-conducting insulating layer, the heat-conducting insulating layer wraps the power conductor along the circumference of the power conductor.

[0015] According to some embodiments of the present application, the uniform heat insulation layer wraps the power line unit along the circumference of the power line unit.

[0016] According to some embodiments of the present application, the uniform heat insulation layer comprises: a second heat insulation sublayer, the second heat insulation sublayer covers the power line unit along the circumference of the power line unit, and the second heat insulation sublayer is used to prevent heat of the power line unit from being transmitted to the outer sheath layer; a second heat conduction sublayer, the second heat conduction sublayer is arranged on the side of the second heat insulation sublayer facing the power line unit, and the second heat conduction sublayer is used to uniformly disperse heat of the power line unit; and a bonding sublayer, the bonding sublayer is arranged on the side of the second heat conduction sublayer facing the power line unit.

[0017] According to some embodiments of the present application, the uniform heat insulation layer and the outer sheath layer are formed into one body.

[0018] The additional aspects and advantages of the present application will be partially given in the following description, some will become apparent from the following description, or will be understood by those skilled in the art through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0019] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0020] Figure 1 is a sectional view of a charging cable according to an embodiment of the present application;

[0021] Figure 2 is another sectional view of a charging cable according to an embodiment of the present application;

[0022] Figure 3 is a sectional view of a control line unit of a charging cable according to an embodiment of the present application;

[0023] Figure 4 is a sectional view of a uniform heat insulation layer according to an embodiment of the present application;

[0024] Figure 5 is a sectional view of a uniform heat insulation layer according to another embodiment of the present application.

[0025] REFERENCE NUMERALS:

[0026] 1. A charging cable;

[0027] 100. An outer sheath layer;

[0028] 200. A power line unit; 210. A positive line; 220. A negative line; 230. A ground line; 240. A power conductor; 250. A heat-conducting insulation layer;

[0029] 300. A uniform heat insulation layer; 310. A first heat insulation sublayer; 320. A first heat conduction sublayer; 330. A second heat insulation sublayer; 340. A second heat conduction sublayer; 350. A bonding sublayer;

[0030] 400, liquid cooling tube;

[0031] 500, control line unit; 510, control line; 511, signal conductor; 512, signal insulation layer; 520, shielding layer; 530, control line sheath layer. DETAILED DESCRIPTION

[0032] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used only for the purpose of explaining the present application, and should not be understood as limiting the present application.

[0033] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0034] In the description of the present application, "first feature" and "second feature" can include one or more features.

[0035] In the description of the present application, "a plurality of" means two or more, and "several" means one or more.

[0036] The charging cable 1 according to an embodiment of the present application is described below with reference to the drawings.

[0037] As shown in FIG. 1, the charging cable 1 according to an embodiment of the present application includes an outer sheath layer 100, a power line unit 200, and a uniform heat insulation layer 300. Figures 1-5 The power line unit 200 is disposed in the outer sheath layer 100, and the power line unit 200 is used to transmit current. The uniform heat insulation layer 300 is disposed between the outer sheath layer 100 and the power line unit 200, and the two sides of the uniform heat insulation layer 300 are respectively attached to the outer sheath layer 100 and the power line unit 200. The uniform heat insulation layer 300 uniformly disperses the heat of the power line unit 200 and prevents the heat from being transmitted to the outer sheath layer 100.

[0038]

[0039] ​For example, the outer sheath layer 100 can be made of silicone rubber, cross-linked polyolefin, polyurethane or the like. The power line unit 200 and the uniform thermal insulation layer 300 are arranged in the outer sheath layer 100, so that the outer sheath layer 100 can protect the power line unit 200 and the uniform thermal insulation layer 300, thereby reducing the risk of internal damage of the charging cable 1, and prolonging the service life of the charging cable 1.

[0040] It can be understood that the thermal insulation layer can only reduce the conduction efficiency of heat, but it is difficult to completely cut off the heat, and when the heat is concentrated in a local part, the temperature of the local part rises, and even if the thermal insulation layer is provided, the heat insulation effect of the thermal insulation layer in the local part where the heat is concentrated will decrease.

[0041] In the charging cable 1 of the embodiment of the utility model, by setting the uniform thermal insulation layer 300, the uniform thermal insulation layer 300 is arranged between the outer sheath layer 100 and the power line unit 200, and the two sides of the uniform thermal insulation layer 300 are attached to the outer sheath layer 100 and the power line unit 200 respectively. In this way, when the power line unit 200 generates heat, the heat can be directly transmitted to the uniform thermal insulation layer 300, and the uniform thermal insulation layer 300 can uniformly disperse the heat to multiple parts of the uniform thermal insulation layer 300, and then cut off the heat, which can avoid the heat from being concentrated in a local part of the uniform thermal insulation layer 300, thereby avoiding the local temperature of the charging cable 1 from being too high, the heat insulation effect of the uniform thermal insulation layer 300 can be better, and the heat of the power line unit 200 can be more effectively transmitted to the outer sheath layer 100, thereby reducing the temperature of the outer surface of the outer sheath layer 100, facilitating user operation, and being conducive to prolonging the service life of the charging cable 1.

[0042] Therefore, the uniform thermal insulation layer 300 of the charging cable 1 according to the embodiment of the utility model not only can prevent heat from being transmitted to the outer sheath layer 100, but also can make the heat uniformly distributed, more effectively avoid local overheating, and have a better heat insulation effect.

[0043] In some specific embodiments of the utility model, as shown in Figure 1 The uniform thermal insulation layer 300 extends along the circumference of the outer sheath layer 100.

[0044] That is, the cross-sectional shape of the uniform thermal insulation layer 300 can be annular, and the uniform thermal insulation layer 300 can be completely attached to the inner side of the outer sheath layer 100.

[0045] Thus, the uniform heat insulation layer 300 is arranged between the outer sheath layer 100 and the power line unit 200, and the uniform heat insulation layer 300 extends along the circumference direction of the outer sheath layer 100, so that the uniform heat insulation layer 300 is attached to the outer sheath layer 100, and the uniform heat insulation layer 300 can completely separate the power line unit 200 from the outer sheath layer 100, when the heat generated by the power line unit 200 is transmitted to the uniform heat insulation layer 300, the uniform heat insulation layer 300 can better insulate the heat, and the heat is prevented from being transmitted to the outer sheath layer 100, and the outer surface temperature of the outer sheath layer 100 can be lower.

[0046] In some embodiments of the utility model, as shown in Figure 4 The uniform heat insulation layer 300 includes a first heat insulation sublayer 310 and a first heat conduction sublayer 320.

[0047] The first heat insulation sublayer 310 extends along the circumference direction of the outer sheath layer 100, and the first heat insulation sublayer 310 is used to prevent the heat of the power line unit 200 from being transmitted to the outer sheath layer 100, and the first heat conduction sublayer 320 is arranged on the side of the first heat insulation sublayer 310 away from the outer sheath layer 100, and the first heat conduction sublayer 320 is used to uniformly disperse the heat of the power line unit 200.

[0048] For example, the material selected for the first heat insulation sublayer 310 can include but is not limited to heat insulation fiber, aerogel, etc. with heat insulation properties, and the material selected for the first heat conduction sublayer 320 can include but is not limited to copper foil, boron nitride, etc. with heat conduction properties.

[0049] The first heat conduction sublayer 320 is arranged on the side of the first heat insulation sublayer 310 away from the outer sheath layer 100, that is, the first heat conduction sublayer 320 is arranged on the side of the first heat insulation sublayer 310 facing the power line unit 200, so that the heat generated by the power line unit 200 can be uniformly dispersed through the first heat conduction sublayer 320, thereby avoiding local temperature concentration, not only can the high temperature cause the power line unit 200 to be damaged, but also the dispersed heat is convenient for being cut off, and the heat insulation effect of the uniform heat insulation layer 300 is improved.

[0050] In addition, the first heat insulation sublayer 310 is arranged on the side of the first heat conduction sublayer 320 facing the outer sheath layer 100, the first heat insulation sublayer 310 can cut off the heat on the first heat conduction sublayer 320, thereby avoiding the heat being transmitted to the outer sheath layer 100, so as to avoid the surface temperature of the outer sheath layer 100 being increased, the structure is reasonable, and the use experience of the user is improved.

[0051] In some embodiments of the utility model, as shown in Figure 1 And Figure 2As shown, the charging cable 1 further comprises a liquid cooling pipe 400, the power line unit 200 comprises a positive line 210, a negative line 220 and a ground line 230, and the liquid cooling pipe 400 is arranged in the outer sheath layer 100 and the positive line 210 and the negative line 220 are respectively attached to the diametrically opposite sides of the liquid cooling pipe 400, and the liquid cooling pipe 400 is used for the circulation of cooling liquid.

[0052] Therefore, the heat generated by the power line unit 200 can be exchanged with the cooling liquid in the liquid cooling pipe 400, and the cooling liquid can absorb the heat of the power line unit 200 through the liquid cooling pipe 400 to reduce the temperature of the power line unit 200, so as to avoid damage caused by the excessively high temperature of the power line unit 200, thereby prolonging the service life of the power line unit 200, i.e. prolonging the service life of the charging cable 1, and making the charging reliability of the charging cable 1 higher.

[0053] In addition, by arranging the liquid cooling pipe 400 in the outer sheath layer 100 and attaching the positive line 210 and the negative line 220 to the diametrically opposite sides of the liquid cooling pipe 400, i.e. only one liquid cooling pipe 400 is needed in the embodiment of the utility model, so that the single liquid cooling pipe 400 can be used to simultaneously cool the positive line 210 and the negative line 220, which is conducive to simplifying the structure of the liquid cooling pipe 400, reducing the number of liquid cooling pipes 400, and facilitating the bending of the charging cable 1. In addition, the diameter of the single liquid cooling pipe can be set larger, so as to reduce the influence of bending and cooling liquid impurities on the circulation of the cooling liquid, thereby reducing the production and processing difficulty and cost.

[0054] In some specific embodiments of the utility model, as shown in Figure 1 As shown, the center axis of the liquid cooling pipe 400 coincides with the center axis of the outer sheath layer 100.

[0055] That is, the liquid cooling pipe 400 can be arranged at the center of the outer sheath layer 100, and the liquid cooling pipe 400 is concentrically arranged with the outer sheath layer 100. In this way, the distance between the circumferential direction of the liquid cooling pipe 400 and the outer sheath layer 100 can be the same, so as to facilitate the arrangement of the positive line 210, the negative line 220 and the ground line 230 along the circumferential direction of the liquid cooling pipe 400, thereby facilitating the contact of the liquid cooling pipe 400 with the positive line 210, the negative line 220 and the ground line 230 at the same time, and the cooling liquid in the liquid cooling pipe 400 can take away the heat generated by the positive line 210, the negative line 220 and the ground line 230, so as to cool and reduce the temperature of the power line unit 200, which is conducive to improving the working safety of the charging cable 1 and prolonging the service life of the power line unit 200.

[0056] In some specific embodiments of the utility model, as shown in Figure 1As shown, the positive electrode wire 210 and the negative electrode wire 220 extend along the circumference of the liquid cooling pipe 400, and the cross-sectional shape of the positive electrode wire 210 and the cross-sectional shape of the negative electrode wire 220 are both configured as a fan ring shape.

[0057] In this way, along the radial direction of the charging cable 1, the radial two sides of the positive electrode wire 210 can form arc surfaces, and the area of the radial two sides of the positive electrode wire 210 can be larger, so that the radial two sides of the positive electrode wire 210 are better attached to the liquid cooling pipe 400 and the uniform heat insulation layer 300 respectively, which can improve the cooling and heat dissipation efficiency of the liquid cooling pipe 400 on the positive electrode wire 210, and can improve the uniformity of heat transfer from the positive electrode wire 210 to the uniform heat insulation layer 300, and the uniform heat insulation effect of the uniform heat insulation layer 300 is better.

[0058] Similarly, along the radial direction of the charging cable 1, the radial two sides of the negative electrode wire 220 can form arc surfaces, and the area of the radial two sides of the negative electrode wire 220 can be larger, so that the radial two sides of the negative electrode wire 220 are better attached to the liquid cooling pipe 400 and the uniform heat insulation layer 300 respectively, which can improve the cooling and heat dissipation efficiency of the liquid cooling pipe 400 on the negative electrode wire 220, and can improve the uniformity of heat transfer from the negative electrode wire 220 to the uniform heat insulation layer 300, and the uniform heat insulation effect of the uniform heat insulation layer 300 is better.

[0059] In some specific embodiments of the present application, as shown in Figure 1 and Figure 3 The charging cable 1 further comprises a control wire unit 500.

[0060] The control wire unit 500 is used to monitor the temperature of the cooling liquid in the liquid cooling pipe 400 and control the flow rate of the cooling liquid.

[0061] For example, the control wire unit 500 can control the flow rate of the cooling liquid according to the temperature of the cooling liquid in the liquid cooling pipe 400. For example, when the control wire unit 500 detects that the temperature of the cooling liquid in the liquid cooling pipe 400 is relatively high, it indicates that the heat generated by the power wire unit 200 is relatively large, at this time the control wire unit 500 can control to speed up the flow rate of the cooling liquid, so that the cooling liquid can take away more heat in unit time, thereby improving the cooling effect of the power wire unit 200, so as to ensure that the temperature of the power wire unit 200 can be lower, thereby avoiding high temperature damage to the power wire unit 200, and improving the use safety of the charging cable 1.

[0062] Or, when the control wire unit 500 detects that the temperature of the cooling liquid in the liquid cooling pipe 400 is relatively low, it indicates that the heat generated by the power wire unit 200 is relatively small, at this time the control wire unit 500 can control the flow rate of the cooling liquid to be relatively low, which can meet the cooling demand of the control wire unit 200 while reducing the energy consumption of the driving unit driving the cooling liquid to flow, so as to save energy consumption.

[0063] As shown in Figure 3 The control line unit 500 at least includes a plurality of control lines 510, a shielding layer 520 and a control line sheath layer 530.

[0064] The control line 510 includes a signal conductor 511 and a signal insulating layer 512, the signal insulating layer 512 covers the signal conductor 511 along the circumference of the signal conductor 511, the shielding layer 520 is arranged outside the control line 510 and wraps the plurality of control lines 510, and the control line sheath layer 530 is arranged outside the shielding layer 520 and covers the shielding layer 520.

[0065] For example, the control line sheath layer 530 can be silicone rubber, cross-linked polyolefin, polyurethane.

[0066] In addition, the shielding layer 520 can be composed of a tinned copper wire braid plus an aluminum foil. The braid density of the shielding layer 520 is 80% to 95% (the braid density refers to the ratio of the shielding material coverage area to the cable outer surface area), for example, the braid density can be 80%, 82%, 84%, 86%, 88%, 90%, 92%, 94% or 95%. In this way, it can not only avoid that the braid density of the shielding layer 520 is too large, which is convenient for processing and manufacturing, but also can ensure the flexibility of the charging cable 1, which is convenient for the user to bend the charging cable 1, and can also avoid that the braid density of the shielding layer 520 is too small, so as to ensure that the shielding layer 520 can effectively protect the control line 510 from electromagnetic interference.

[0067] The control line 510 and the shielding layer 520 are arranged in the control line sheath layer 530, and the control line sheath layer 530 can protect the control line 510 and the shielding layer 520. In addition, a plurality of control lines 510 are arranged in the control line unit 500, and the signal conductor 511 is covered by the signal insulating layer 512 along the circumference in each control line 510. In this way, it can avoid current interference between the plurality of signal conductors 511, and further avoid signal interference between the plurality of signal conductors 511, so as to ensure that each signal conductor 511 can stably transmit signals, and the charging cable 1 can stably transmit current.

[0068] In addition, by arranging the shielding layer 520, the shielding layer 520 can inhibit electromagnetic interference, and the shielding layer 520 wraps the plurality of control lines 510, so that the shielding layer 520 can reduce electromagnetic interference on the control line 510, which is conducive to improving the stability of the control line unit 500 in transmitting signals.

[0069] In addition, only the shielding layer 520 is arranged outside the control line 510, which can improve the softness of the charging cable 1 and reduce the cost of the charging cable 1, so as to facilitate the bending of the charging cable 1.

[0070] In some embodiments of the utility model, the liquid cooling pipe 400 is made of at least one of polytetrafluoroethylene, polyketone and silicone rubber.

[0071] The cooling liquid can include, but is not limited to, dimethyl silicone oil, a mixture of water and ethylene glycol, electronic fluorinated liquid, transformer oil and other flowing substances with cooling properties.

[0072] By selecting a flexible material for the liquid cooling pipe 400, the flexibility of the charging cable 1 can be high, facilitating the bending of the liquid cooling pipe 400 and user operation. Moreover, when the charging cable 1 is bent, the liquid cooling pipe 400 is less likely to deform and cause blockage, thereby ensuring smooth flow of the cooling liquid in the liquid cooling pipe 400 to reliably dissipate heat from the power cord unit 200 using the cooling liquid in the liquid cooling pipe 400.

[0073] In some embodiments of the utility model, as shown in Figure 1 and Figure 2 The positive line 210 and the negative line 220 each include a power conductor 240 and a thermally conductive insulating layer 250, and the thermally conductive insulating layer 250 covers the power conductor 240 in the circumferential direction of the power conductor 240.

[0074] For example, the power conductor 240 can be, but is not limited to, a metal material with electrical conductivity, such as copper, and the thermally conductive insulating material can be, but is not limited to, a thermally conductive insulating material such as high-thermal-conductivity silicon and rubber.

[0075] The positive line 210 and the negative line 220 can transmit current through the power conductor 240, and the thermally conductive insulating layer 250 can isolate the current transmitted by the positive line 210 and the negative line 220 to prevent current leakage to the outer sheath layer 100, thereby improving the safety of the charging cable 1. Moreover, the thermally conductive insulating layer 250 can uniformly transmit the heat generated by the power conductor 240 to the cooling liquid in the liquid cooling pipe 400 and the uniform thermal insulation layer 300, respectively, to cool the power conductor 240, so that the power conductor 240 can be in a low-temperature state, which is conducive to improving the working safety of the power cord unit 200.

[0076] In other embodiments of the utility model, the uniform thermal insulation layer 300 covers the power cord unit 200 in the circumferential direction of the power cord unit 200.

[0077] That is, the uniform thermal insulation layer 300 only covers and winds the power cord unit 200 in the circumferential direction. This arrangement can use the uniform thermal insulation layer 300 to fix the positive line 210, the negative line 220 and the ground wire 230, facilitating the subsequent extrusion processing of the outer sheath layer 100, and can reduce the amount of the uniform thermal insulation layer 300 used to further simplify the internal structure of the charging cable 1.

[0078] In some specific embodiments of this utility model, such as Figure 5 As shown, the uniform heat insulation layer 300 includes a second heat insulation sublayer 330, a second heat conducting sublayer 340, and an adhesive sublayer 350.

[0079] The second heat insulation sublayer 330 covers the power line unit 200 circumferentially and prevents the heat of the power line unit 200 from being transferred to the outer sheath layer 100. The second heat-conducting sublayer 340 is disposed on the side of the second heat insulation sublayer 330 facing the power line unit 200 and is used to evenly distribute the heat of the power line unit 200. The adhesive sublayer 350 is disposed on the side of the second heat-conducting sublayer 340 facing the power line unit 200.

[0080] For example, the second thermal insulation sublayer 330 may include, but is not limited to, thermal insulation fibers, aerogels, and other materials with thermal insulation properties, and the second thermal conductive sublayer 340 may include, copper foil, boron nitride, and other materials with heat uniformity properties.

[0081] The second heat-conducting sublayer 340 is located on the side of the second heat-insulating sublayer 330 facing the power line unit 200. In this way, the heat generated by the power line unit 200 can be evenly distributed through the second heat-conducting sublayer 340, thereby avoiding local temperature concentration. This not only prevents the power line unit 200 from being damaged by high temperature, but also facilitates heat insulation after heat dispersion, which helps to improve the heat insulation effect of the uniform heat insulation layer 300.

[0082] In addition, the second heat insulation sublayer 330 is located on the side of the second heat conduction sublayer 340 facing the outer sheath layer 100. The second heat insulation sublayer 330 can isolate the heat on the second heat conduction sublayer 340, thereby preventing the heat from being transferred to the outer sheath layer 100, so as to avoid the surface temperature of the outer sheath layer 100 rising. The structure is reasonably designed, which is conducive to improving the user experience.

[0083] In addition, by adding an adhesive sublayer 350, the uniform heat insulation layer 300 can be bonded to the power line unit 200 through the adhesive sublayer 350, which helps to improve the connection stability between the uniform heat insulation layer 300 and the power line unit 200, so as to facilitate the extrusion processing of the outer sheath layer 100 in the later stage.

[0084] In some specific embodiments of this utility model, the uniform heat insulation layer 300 and the outer sheath layer 100 are formed as one piece.

[0085] The uniform heat insulation layer 300 and the outer sheath layer 100 are formed into an integrated structure, the outer layer of the integrated structure can adopt a high wear-resistant composite material, and the inner layer of the integrated structure can adopt a high heat insulation material, so that the structure of the uniform heat insulation layer 300 and the outer sheath layer 100 can be further simplified, the processing is facilitated, the connection strength of the uniform heat insulation layer 300 and the outer sheath layer 100 can be higher, and the service life of the charging cable 1 can be prolonged.

[0086] Other configurations and operations of the charging cable 1 according to the embodiments of the present application are known to those skilled in the art, and will not be described in detail herein.

[0087] In the description of the present application, the description referring to the terms "specific embodiments", "specific examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are contained in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.

[0088] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A charging cable (1), characterized in that, include: Outer sheath layer (100); A power line unit (200) is disposed within the outer sheath layer (100) and is used to transmit current; A uniform heat insulation layer (300) is disposed between the outer sheath layer (100) and the power line unit (200), and the two sides of the uniform heat insulation layer (300) are respectively attached to the outer sheath layer (100) and the power line unit (200). The uniform heat insulation layer (300) evenly disperses the heat of the power line unit (200) and prevents the heat from being transferred to the outer sheath layer (100).

2. The charging cable (1) according to claim 1, characterized in that, The uniform heat insulation layer (300) extends circumferentially along the outer sheath layer (100).

3. The charging cable (1) according to claim 2, characterized in that, The uniform heat insulation layer (300) includes: A first heat insulation sublayer (310) extends circumferentially along the outer sheath layer (100) and is used to prevent heat from the power line unit (200) from being transferred to the outer sheath layer (100). The first thermally conductive sublayer (320) is disposed on the side of the first thermal insulation sublayer (310) facing away from the outer sheath layer (100), and the first thermally conductive sublayer (320) is used to uniformly distribute the heat of the power line unit (200).

4. The charging cable (1) according to claim 1, characterized in that, Also includes: The liquid cooling pipe (400) and the power line unit (200) include a positive line (210), a negative line (220) and a ground line (230). The liquid cooling pipe (400) is disposed inside the outer sheath layer (100) and the positive line (210) and the negative line (220) are respectively attached to the radially opposite sides of the liquid cooling pipe (400). The liquid cooling pipe (400) is used to supply coolant.

5. The charging cable (1) according to claim 4, characterized in that, The central axis of the liquid cooling pipe (400) coincides with the central axis of the outer sheath (100).

6. The charging cable (1) according to claim 4, characterized in that, The positive electrode line (210) and the negative electrode line (220) extend circumferentially along the liquid cooling pipe (400), and the cross-sectional shape of the positive electrode line (210) and the cross-sectional shape of the negative electrode line (220) are both constructed as fan-shaped rings.

7. The charging cable (1) according to claim 4, characterized in that, Also includes: A control line unit (500) is used to monitor the temperature of the coolant in the liquid cooling pipe (400) and control the flow rate of the coolant, and the control line unit (500) includes at least: Multiple control lines (510) are provided, each control line (510) including a signal conductor (511) and a signal insulating layer (512), the signal insulating layer (512) covering the signal conductor (511) circumferentially. A shielding layer (520) is disposed on the outside of the control line (510) and wraps around the multiple control lines (510). A control line sheath layer (530) is disposed on the outside of the shielding layer (520) and covers the shielding layer (520).

8. The charging cable (1) according to claim 4, characterized in that, The liquid cooling tube (400) is made of at least one of polytetrafluoroethylene, polyketone and silicone rubber.

9. The charging cable (1) according to claim 4, characterized in that, Both the positive electrode (210) and the negative electrode (220) include: Power conductor (240); A thermally conductive insulating layer (250) covers the power conductor (240) circumferentially.

10. The charging cable (1) according to claim 1, characterized in that, The uniform heat insulation layer (300) covers the power line unit (200) circumferentially.

11. The charging cable (1) according to claim 10, characterized in that, The uniform heat insulation layer (300) includes: The second heat insulation sublayer (330) covers the power line unit (200) circumferentially and is used to prevent the heat of the power line unit (200) from being transferred to the outer sheath layer (100). The second thermally conductive sublayer (340) is disposed on the side of the second thermal insulation sublayer (330) facing the power line unit (200), and the second thermally conductive sublayer (340) is used to uniformly disperse the heat of the power line unit (200). An adhesive sublayer (350) is disposed on the side of the second thermally conductive sublayer (340) facing the power line unit (200).

12. The charging cable (1) according to claim 1, characterized in that, The uniform heat insulation layer (300) and the outer sheath layer (100) are formed as one piece.

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