High-power liquid cooling type charging pile cable

Abstract

The utility model discloses a high-power liquid cooling type charging pile cable. The high-power liquid cooling type charging pile cable comprises a cable core formed by combining two conductive wire cores, a grounding wire core, two auxiliary power wire cores, a control wire core unit and a metal shielding type signal wire core unit; an outer sheath is extruded outside the cable core, and a glass fiber yarn woven reinforcing layer is arranged in the outer sheath; according to the utility model, the improved structure enables the cable to have high-strength tensile performance, good fireproof performance, wear resistance, mechanical performance and tensile performance, thereby effectively ensuring the safe and reliable operation of the cable, prolonging the service life of the cable, and better meeting the requirements of the market.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, and in particular to a liquid-cooled charging pile cable for high-power and fast charging of electric vehicles. Background Art

[0002] Under the macro trend of the profound transformation of the global automotive industry to electrification, my country, as a global leader in the production and consumption of new energy vehicles, has achieved rapid development in the new energy vehicle industry. By the end of 2023, my country's new energy vehicle ownership will be 20.41 million, of which pure electric vehicles will be 15.52 million, accounting for 76% of the new energy vehicle ownership. This data shows that my country's new energy vehicle market is making rapid breakthroughs, and electric vehicles have become the mainstream choice for the public to buy cars.

[0003] Various regions are also increasing investment in the construction of supporting infrastructure such as electric vehicle charging piles. In order to improve charging efficiency and driving range, ultra-fast charging technology has become the current development trend and hot spot of electric vehicle charging piles. The electric vehicle super charging equipment specifications issued by Beijing, Shenzhen and other places require that the battery of an electric vehicle be charged from 0% to 80% within 10 minutes to ensure a driving range of at least 320 kilometers, and the minimum power of the charging pile facilities must reach more than 400 kilowatts. The ultra-fast charging technology of electric vehicles puts higher requirements on charging pile facilities. When the ordinary charging cables supporting conventional charging piles are charged at high power, the charging cables and charging guns will heat up seriously and even cause electrical fires, endangering the safety of electric vehicles, charging facilities and personnel; and in order to increase the transmission capacity, simply increasing the cross-section of the cable power core specification will cause the cable outer diameter and weight to increase a lot, the cable becomes bulky, the cost increases and it is not conducive to the light operation of personnel when charging. Conventional charging pile cables can no longer meet the requirements of high-power, short-term and fast power transmission to electric vehicles. Therefore, in order to solve the problem of heat generation during high-power fast charging of electric vehicles, the technology of liquid-cooled charging cables and charging facilities has been gradually developed and promoted.

[0004] The existing liquid-cooled charging cables for electric vehicle charging piles have the following problems:

[0005] (1) Liquid-cooled charging cables for electric vehicle charging piles in the prior art are mostly cooled by liquid coolants such as silicone oil and water. When high-power fast charging of 400 kW and 600A or above is performed, the conventional 50mm 2 Taking the charging power line core as an example, the temperature of the power line core will rise sharply to over 80°C in a short period of time, reaching the boiling state of the liquid and the loss of the cooling effect, causing the cable and charging gun to heat up severely and burn. Therefore, the electrical control system of the charging pile can only limit the current and extend the charging time, which will reduce the charging efficiency of new energy electric vehicles and the driver's experience.

[0006] (2) The liquid-cooled charging cables used in electric vehicle charging piles in the prior art are frequently dragged, bent, and easily crushed by vehicles during charging. The longitudinal tension on each core is uneven, and the core does not have a tensile reinforcement structure. As a result, after long-term use, the thinner auxiliary core and control signal core inside the cable are prone to core breakage, which greatly reduces the service life of the charging column cable.

[0007] (3) Most of the liquid-cooled charging cables used in existing electric vehicle charging piles are exposed to the sun, rain, dirt and corrosion. The existing outer sheaths have poor crack resistance, wear resistance and corrosion resistance, which shortens the service life of the cables. In addition, in these environments, the problem of anti-bite must also be considered.

[0008] (4) The liquid-cooled charging cables for electric vehicle charging piles in the prior art generate a large amount of heat when multiple power cores, grounding cores, control cores, and shielded signal cores work together. Due to the poor heat dissipation performance of the existing cables, the liquid cooling effect inside the cables deteriorates, the cables heat up, and the charging efficiency decreases.

[0009] In view of the above situation, this patent proposes a DC high-power liquid-cooled charging pile cable for new energy electric vehicles. Utility Model Content

[0010] In order to overcome the deficiencies in the prior art, the utility model provides a high-power liquid-cooled charging pile cable, which adopts liquid metal as the cooling medium of the high-power charging pile cable, can effectively improve the cooling and heat dissipation capacity of the cable, and can realize high-power and super-fast charging functions with a charging current of more than 1000A, greatly improving the charging efficiency of electric vehicles and shortening the charging time; it also has high-strength tensile resistance, good flame retardant performance, fire resistance, wear resistance, mechanical properties and tensile resistance, which effectively ensures the safe and reliable operation of the cable and better meets the needs of the market.

[0011] To achieve the above-mentioned purpose, the utility model provides a high-power liquid-cooled charging pile cable, the overall structure of the cable is flat or round, including 2 conductive cores, 1 grounding core, 2 auxiliary power cores, 1 control core unit and 1 metal shielded signal core unit arranged inside the cable; the 2 conductive cores, 1 grounding core, 2 auxiliary power cores, 1 control core unit and 1 metal shielded signal core unit are combined into a cable core; an outer sheath is extruded outside the cable core, and a glass fiber yarn braided reinforcement layer is provided in the outer sheath; a plurality of elliptical heat dissipation holes are provided on the outer sheath; The two conductive cores are composed of a DC power transmission core as a positive pole and a DC power transmission core as a negative pole to form a loop; the DC power transmission core comprises a liquid metal coolant polyimide plastic pipe, a conductor and a silicone rubber insulation layer or a TPE thermoplastic elastomer insulation layer; the outer surface of the liquid metal coolant polyimide plastic pipe is covered with a soft round copper conductor tightly twisted by multiple strands of fine copper wires, a silicone rubber insulation layer or a TPE thermoplastic elastomer insulation layer is extruded outside the soft round copper conductor, and the liquid metal coolant polyimide plastic pipe is provided with gallium indium tin alloy room temperature liquid metal coolant.

[0012] Furthermore, the grounding core and the auxiliary power core have the same structure, both of which are composed of a copper conductor and an insulating layer extruded outside the copper conductor.

[0013] Furthermore, the control core unit is composed of a pair of twisted insulating cores and a TPE thermoplastic elastomer outer sheath extruded outside the twisted first insulating core; the first insulating core is composed of a first copper conductor and a silicone rubber insulation layer extruded outside the first copper conductor.

[0014] Furthermore, the metal shielded signal wire core unit is composed of a pair of twisted insulating cores, a metal shielding layer woven of aluminum foil and copper wire wrapped around the twisted insulating cores, and a TPU polyurethane elastomer outer sheath extruded outside the metal shielding layer and in the gap between the second insulating core and the metal shielding layer; the second insulating core is composed of a second copper conductor and a TPE thermoplastic elastomer insulation layer extruded outside the second copper conductor.

[0015] Furthermore, the outer sheath is formed by extrusion of silicone rubber, TPE thermoplastic elastomer or TPU polyurethane elastomer material.

[0016] Furthermore, if the overall structure of the cable is flat, the distribution structure of each core in the cable core is as follows: the center of the cable core is a grounding core, a pair of conductive cores are symmetrically arranged on the left and right sides of the grounding core, and a pair of auxiliary power cores are symmetrically arranged on the upper and lower sides of the grounding core; a control core unit is arranged on the left side of the left conductive core, and a metal shielded signal core unit is arranged on the right side of the right conductive core.

[0017] Furthermore, the outer sheath is flat, and V-shaped grooves are respectively provided at the upper and lower ends of the outer sheath.

[0018] Furthermore, if the overall structure of the cable is circular, the cable core is formed by spirally twisting 2 conductive cores, 1 grounding core, 2 auxiliary power cores, 1 control core unit and 1 metal shielded signal core unit; the gaps in the cable core are filled with para-type fully aromatic copolyamide stretched fiber core material.

[0019] Furthermore, PBO fiber ropes are provided at the centers of the copper conductor, the first copper conductor and the second copper conductor.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] 1. Gallium indium tin alloy room temperature liquid metal is used as the coolant. The liquid metal has excellent physical properties such as low melting point (6-12°C), high boiling point (1300°C), high thermal conductivity (more than 70 times that of cooling water and silicone oil), high flow heat exchange rate, and is safe and non-toxic. Using liquid metal as the cooling medium for high-power charging pile cables can effectively improve the cooling and heat dissipation capabilities of the cables, and can achieve high-power and super-fast charging functions with a charging current of more than 1000A, greatly improving the charging efficiency of electric vehicles and shortening the charging time. Combined with the designed elliptical heat dissipation holes, the cable has a heat dissipation function inside and outside, which greatly increases the heat dissipation effect of the cable and ensures the normal operation and charging efficiency of the cable.

[0022] 2. When the cable structure is flat, there is no need for filling, and the outer sheath can be directly extruded. The cores are distributed in parallel and symmetrically, placed in a flat shape, and not twisted together, so that the cores are subjected to balanced longitudinal force and are not prone to core breakage, thereby improving the cable's compressive resistance. In addition, the heat dissipation effect of the parallel distribution of the cores is much greater than that of the circular twisted cable structure, thereby increasing the service life of the cable.

[0023] 3. When the cable structure is circular, adding PBO fiber rope to the small diameter core greatly improves the tensile strength of the core and makes it less likely to break, thereby extending the service life of the cable; in addition, when combined with the filled para-type fully aromatic copolyamide stretched fiber core material, the para-type fully aromatic copolyamide stretched fiber has a large tensile elastic modulus, which helps to improve the tensile resistance, helps to alleviate the stress concentration inside the cable core, alleviates the load stress applied to each core, maintains the balance of the cable core structure, enhances the mechanical strength, helps to improve the impact resistance, can withstand a certain amount of mechanical external force, and also ensures the roundness of the cable.

[0024] 4. Silicone rubber, TPE thermoplastic elastomer or TPU polyurethane elastomer materials are used to form the cable insulation layer, core sheath and outer sheath, which makes the cable have excellent wear resistance, excellent ozone resistance, high hardness, high strength, good elasticity, low temperature resistance, crack resistance, good oil resistance, chemical resistance and environmental resistance. It not only further increases the cable strength and mechanical properties, but also ensures the use of the cable in harsh environments and increases the service life of the cable.

[0025] 5. A glass fiber yarn woven reinforcement layer is embedded in the outer sheath so that the outer sheath of the cable has both good bending flexibility and excellent tensile and wear resistance, which greatly improves the service life of the cable. In addition, the glass fiber is extremely fine and sharp. During the biting process of rodents, the needle-shaped glass fiber will hurt the mouse's mouth, making it afraid of the cable, thereby achieving a rodent-proof effect.

[0026] To sum up, the improved structure of the utility model enables the cable to have high-strength tensile resistance, good fire resistance, wear resistance, mechanical properties and tensile resistance, which effectively ensures the safe and reliable operation of the cable, thereby extending the service life of the cable and better meeting market demand. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the flat structure of the utility model;

[0028] Figure 2 This is another schematic diagram of the flat structure of the utility model;

[0029] Figure 3 This is a schematic diagram of the structure of the DC power transmission line core of the utility model;

[0030] Figure 4 It is a structural schematic diagram of the grounding wire core of the utility model;

[0031] Figure 5 It is a structural schematic diagram of the auxiliary power supply core of the utility model;

[0032] Figure 6It is a structural schematic diagram of the control line core unit of the utility model;

[0033] Figure 7 It is a structural schematic diagram of the metal shielding type signal line core unit of the utility model;

[0034] Figure 8 It is a schematic diagram of the circular structure of the utility model;

[0035] Fig. 9 It is another schematic diagram of the circular structure of the utility model;

[0036] Fig.10 This is another structural schematic diagram of the auxiliary power supply core of the utility model;

[0037] Fig.11 This is another structural schematic diagram of the control line core unit of the utility model;

[0038] Fig.12 This is another structural schematic diagram of the metal shielding signal line core unit of the utility model. DETAILED DESCRIPTION

[0039] The present invention is further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art all fall within the scope defined by the claims attached to this application. Example

[0040] like Figure 1-2 As shown, the utility model provides a high-power liquid-cooled charging pile cable, the overall structure of the cable is flat, including two conductive cores 1, a grounding core 2, two auxiliary power cores 3, a control core unit 4 and a metal shielded signal core unit 5 arranged inside the cable;

[0041] Two conductive cores, one grounding core, two auxiliary power cores, one control core unit and one metal shielded signal core unit are combined into a cable core; wherein the two conductive cores form a loop with one DC power core as the positive pole and one DC power core as the negative pole;

[0042] The distribution structure of each core in the cable core is as follows: the center of the cable core is a grounding core, with a pair of conductive cores symmetrically arranged on the left and right sides of the grounding core as the center, and a pair of auxiliary power cores symmetrically arranged on the upper and lower sides of the grounding core as the center; a control core unit is arranged on the left side of the conductive core on the left, and a metal shielded signal core unit is arranged on the right side of the conductive core on the right, which are arranged in a parallel symmetrical structure and flat, and are not twisted with each other;

[0043] Finally, silicone rubber, TPE thermoplastic elastomer or TPU polyurethane elastomer material is tightly coated on the outer surface of all the wire cores and the gaps between them to form a flat outer sheath 7, so that the cable has high tensile strength / elongation, good shock absorption effect, excellent wear resistance and low-temperature elasticity; and when the outer sheath is extruded, a high-strength and high-flexibility glass fiber yarn braided reinforcement layer 6 is embedded inside the outer sheath and completely embedded in the molten outer sheath rubber, so that the outer sheath of the cable has both good bending flexibility and excellent tensile strength, wear resistance and other mechanical properties, which greatly improves the service life of the cable.

[0044] In this embodiment, elliptical heat dissipation holes 8 are provided on the outer sheath and located at the upper and lower parts of the two arc-shaped edges, which realize the heat dissipation function, greatly improve the heat dissipation capacity of the cable, reduce the weight of the cable, and provide a buffer space for the cable when it is squeezed, so as to better protect the cable core, thereby greatly improving the charging efficiency of the cable.

[0045] In this embodiment, V-shaped grooves 71 are respectively provided at the upper and lower ends of the outer sheath 7 .

[0046] In this embodiment, if Figure 3 As shown, the DC power transmission power line core includes a liquid metal coolant polyimide plastic pipe 9, a soft round copper conductor 10 and an insulating layer 11 (the insulating layer adopts a silicone rubber insulating layer or a TPE thermoplastic elastomer insulating layer). The outer surface of the liquid metal coolant polyimide plastic pipe 9 is covered with a soft round copper conductor 10 tightly twisted by multiple strands of fine copper wires, and an insulating layer 11 is extruded outside the soft round copper conductor 10 (the insulating layer adopts a silicone rubber insulating layer or a TPE thermoplastic elastomer insulating layer). The liquid metal coolant polyimide plastic pipe 9 is provided with a gallium indium tin alloy room temperature liquid metal coolant 12, which has excellent physical properties such as low melting point, high boiling point, high thermal conductivity, and high flow heat transfer rate, can effectively improve the cable cooling and heat dissipation capabilities, and can achieve high-power and super-fast charging functions with a charging current of more than 1000A.

[0047] In this embodiment, if Figure 4-5 As shown, the grounding core 2 and the auxiliary power core 3 have the same structure but different sizes, and are both composed of a copper conductor 13 and an insulating layer 11 extruded outside the copper conductor; the insulating layer is a silicone rubber insulating layer or a TPE thermoplastic elastomer insulating layer.

[0048] In this embodiment, if Figure 6 As shown, the control core unit 4 consists of a pair of twisted first insulating cores and a TPE thermoplastic elastomer outer sheath 42 extruded outside the twisted first insulating cores 41; the first insulating core consists of a first copper conductor 43 and a silicone rubber insulation layer 44 extruded outside the first copper conductor.

[0049] In this embodiment, if Figure 7 As shown, the metal shielded signal core unit 5 is composed of a pair of twisted second insulating cores 51, a metal shielding layer 52 woven of aluminum foil and copper wire wrapped around the twisted second insulating cores, and a TPU polyurethane elastomer outer sheath 53 extruded outside the metal shielding layer and in the gap between the second insulating core and the metal shielding layer; the second insulating core is composed of a second copper conductor 54 and a TPE thermoplastic elastomer insulation layer 55 extruded outside the second copper conductor, so that the cable has high elasticity, high strength, high resilience, is environmentally friendly, non-toxic and safe, and has excellent weather resistance, fatigue resistance and temperature resistance. Example

[0050] like Figure 8 As shown, the utility model provides a liquid-cooled charging pile cable for high-power DC charging. The overall structure of the cable is circular, including two conductive cores 1, one grounding core 2, two auxiliary power cores 3, one control core unit 4 and one metal shielded signal core unit 5 arranged inside the cable; wherein the two conductive cores 1 form a loop with one DC power core as the positive pole and one DC power core as the negative pole;

[0051] Two conductive cores, one grounding core, two auxiliary power cores, one control core unit and one metal shielded signal core unit are twisted together to form a cable core, and the gaps in the cable core are filled with a para-type fully aromatic copolyamide stretched fiber core material 14. The para-type fully aromatic copolyamide stretched fiber has a large tensile elastic modulus, which helps to improve the tensile resistance, helps to alleviate the stress concentration inside the cable core, alleviates the load stress applied to each core, maintains the balance of the cable core structure, enhances the mechanical strength, helps to improve the impact resistance, can withstand a certain amount of mechanical external force, and also ensures the roundness of the cable;

[0052] Finally, silicone rubber, TPE thermoplastic elastomer or TPU polyurethane elastomer material is tightly coated on the cable core to form the outer sheath 7 of the cable, and during the extrusion process of the outer sheath, a high-strength and high-flexibility glass fiber yarn braided reinforcement layer 6 is embedded inside the outer sheath and completely embedded in the molten outer sheath rubber material, so that the outer sheath of the cable has both good bending flexibility and excellent tensile strength, wear resistance and other mechanical properties, which greatly improves the service life of the cable.

[0053] In this embodiment, if Fig. 9 As shown, the outer sheath is also provided with elliptical heat dissipation holes 8 around it, which realizes the heat dissipation function, greatly improves the heat dissipation capacity of the cable, reduces the weight of the cable, and provides a buffer space for the cable when it is squeezed, better protects the cable core, thereby greatly improving the charging efficiency of the cable.

[0054] In this embodiment, the elliptical heat dissipation holes 8 may also be filled with cooling liquid or cooling gas to further enhance the heat dissipation function of the cable.

[0055] In this embodiment, if Figure 8 and 3 As shown, the DC power transmission power line core includes a liquid metal coolant polyimide plastic pipe 9, a soft round copper conductor 10 and an insulating layer 11 (the insulating layer adopts a silicone rubber insulating layer or a TPE thermoplastic elastomer insulating layer). The outer surface of the liquid metal coolant polyimide plastic pipe 9 is covered with a soft round copper conductor 10 tightly twisted by multiple strands of fine copper wires, and an insulating layer 11 is extruded outside the soft round copper conductor 9 (the insulating layer adopts a silicone rubber insulating layer or a TPE thermoplastic elastomer insulating layer). The liquid metal coolant polyimide plastic pipe 9 is provided with a gallium indium tin alloy room temperature liquid metal coolant 12, which has excellent physical properties such as low melting point, high boiling point, high thermal conductivity, and high flow heat transfer rate, can effectively improve the cable cooling and heat dissipation capabilities, and can achieve high-power and super-fast charging functions with a charging current of more than 1000A.

[0056] In this embodiment, if Figure 8 and 4 As shown, the grounding core 2 is composed of a copper conductor 13 and an insulating layer 11 extruded outside the copper conductor; the insulating layer is a silicone rubber insulating layer or a TPE thermoplastic elastomer insulating layer.

[0057] In this embodiment, if Fig.10 As shown, the auxiliary power supply core 3 is composed of a copper conductor 13, a PBO fiber rope 15 arranged in the center of the copper conductor, and an insulating layer 11 extruded outside the copper conductor; the insulating layer is a silicone rubber insulating layer or a TPE thermoplastic elastomer insulating layer.

[0058] In this embodiment, if Fig.11 As shown, the control core unit 4 consists of a pair of twisted first insulating cores and a TPE thermoplastic elastomer outer sheath 42 extruded outside the twisted first insulating core 41; the first insulating core is composed of a first copper conductor 43, a PBO fiber rope 15 arranged at the center of the first copper conductor, and a silicone rubber insulation layer 44 extruded outside the first copper conductor.

[0059] In this embodiment, if Fig.12As shown, the metal shielded signal core unit 5 is composed of a pair of twisted second insulating cores 51, a metal shielding layer 52 woven of aluminum foil and copper wire wrapped around the twisted second insulating cores, and a TPU polyurethane elastomer outer sheath 53 extruded outside the metal shielding layer and in the gap between the second insulating core and the metal shielding layer; the second insulating core is composed of a second copper conductor 54, a PBO fiber rope 15 arranged at the center of the second copper conductor, and a TPE thermoplastic elastomer insulation layer 55 extruded outside the second copper conductor, so that the cable has high elasticity, high strength, high resilience, is environmentally friendly, non-toxic and safe, and has excellent weather resistance, fatigue resistance and temperature resistance.

[0060] It should be noted that: a PBO fiber rope 15 is arranged in the center of the copper conductor, the first copper conductor and the second copper conductor. The PBO fiber rope 15 is a kind of organic high-performance fiber with the highest mechanical properties and heat resistance. Its tensile strength and modulus are almost twice that of para-aramid, and its heat resistance is 100°C higher than that of para-aramid. Its limiting oxygen index (LOI) is 68, and it is a non-combustible fiber. Its density is 1.54-1.56g / cm 3 , which is lighter than carbon fiber. The use of this improved fiber reinforcement rope greatly improves the tensile strength, wear resistance and bending fatigue resistance of the wire core, and increases the service life of the cable; it also reduces the weight of the cable, reduces the tension required during cable laying and use, and better protects the cable from core breakage.

[0061] To sum up, the improved structure of the utility model enables the cable to have high-strength tensile resistance, good fire resistance, wear resistance, mechanical properties and tensile resistance, which effectively ensures the safe and reliable operation of the cable, thereby extending the service life of the cable and better meeting market demand.

[0062] The utility model has many specific application paths. The above is only the preferred implementation mode of the utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements can be made without departing from the principle of the utility model. These improvements should also be regarded as the protection scope of the utility model.

Claims

1. A high-power liquid-cooled charging pile cable, characterized in that: The overall structure of the cable is flat or round, including 2 conductive cores, 1 grounding core, 2 auxiliary power cores, 1 control core unit and 1 metal shielded signal core unit arranged inside the cable; the 2 conductive cores, 1 grounding core, 2 auxiliary power cores, 1 control core unit and 1 metal shielded signal core unit are combined into a cable core; an outer sheath is extruded outside the cable core, and a glass fiber yarn braided reinforcement layer is arranged inside the outer sheath; a plurality of elliptical heat dissipation holes are arranged on the outer sheath; the 2 conductive cores are connected to a DC transmission line through a control core unit; the 2 conductive cores are connected to a DC transmission line through a control core unit; the 2 grounding cores are connected to a control core unit; the control core unit is ... A power line core is used as a positive pole and a DC power line core is used as a negative pole to form a loop; the DC power line core comprises a liquid metal coolant polyimide plastic pipe, a soft round copper conductor and a silicone rubber insulation layer or a TPE thermoplastic elastomer insulation layer; the outer surface of the liquid metal coolant polyimide plastic pipe is covered with a soft round copper conductor tightly twisted by multiple strands of fine copper wires, a silicone rubber insulation layer or a TPE thermoplastic elastomer insulation layer is extruded outside the soft round copper conductor, and the liquid metal coolant polyimide plastic pipe is provided with gallium indium tin alloy room temperature liquid metal coolant.

2. A high-power liquid-cooled charging pile cable according to claim 1, characterized in that: The grounding core has the same structure as the auxiliary power core, and both are composed of a copper conductor and an insulating layer extruded outside the copper conductor.

3. A high-power liquid-cooled charging pile cable according to claim 2, characterized in that: The control core unit is composed of a pair of twisted insulating cores and a TPE thermoplastic elastomer outer sheath extruded outside the first twisted insulating core; the first insulating core is composed of a first copper conductor and a silicone rubber insulating layer extruded outside the first copper conductor.

4. A high-power liquid-cooled charging pile cable according to claim 3, characterized in that: The metal shielded signal core unit is composed of a pair of twisted insulating cores, a metal shielding layer woven of aluminum foil and copper wire wrapped around the twisted insulating cores, and a TPU polyurethane elastomer outer sheath extruded outside the metal shielding layer and in the gap between the second insulating core and the metal shielding layer; the second insulating core is composed of a second copper conductor and a TPE thermoplastic elastomer insulation layer extruded outside the second copper conductor.

5. A high-power liquid-cooled charging pile cable according to claim 4, characterized in that: The outer sheath is formed by extrusion of silicone rubber, TPE thermoplastic elastomer or TPU polyurethane elastomer material.

6. A high-power liquid-cooled charging pile cable according to claim 5, characterized in that: If the overall structure of the cable is flat, the distribution structure of each core in the cable core is as follows: the center of the cable core is a grounding core, a pair of conductive cores are symmetrically arranged on the left and right sides of the grounding core, and a pair of auxiliary power cores are symmetrically arranged on the upper and lower sides of the grounding core; a control core unit is arranged on the left side of the left conductive core, and a metal shielded signal core unit is arranged on the right side of the right conductive core.

7. A high-power liquid-cooled charging pile cable according to claim 6, characterized in that: The outer sheath is flat, and V-shaped grooves are respectively arranged at the upper and lower ends of the outer sheath.

8. A high-power liquid-cooled charging pile cable according to claim 5, characterized in that: If the overall structure of the cable is circular, the cable core is formed by spirally twisting 2 conductive cores, 1 grounding core, 2 auxiliary power cores, 1 control core unit and 1 metal shielded signal core unit, and the gaps in the cable core are filled with para-type fully aromatic copolyamide stretched fiber core material.

9. A high-power liquid-cooled charging pile cable according to claim 8, characterized in that: The centers of the copper conductor, the first copper conductor and the second copper conductor are all provided with PBO fiber ropes.

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