Water-cooling charging pile cable

Abstract

The utility model discloses a water-cooling charging pile cable, which comprises a group of power wire cores, and is characterized by further comprising a signal wire core, a group of control wire cores, a liquid cooling pipe, a shielding layer and an outer sheath. The power wire cores are divided into three types, namely a main power wire core, a second main power wire core and a third main power wire core. The main power wire core, the second main power wire core, the third main power wire core, the signal wire core, the control wire core and the liquid cooling pipe are twisted to form a cable, and then tinned copper wires are braided outside to form a shielding layer, wherein the braiding density is greater than 80%. And the outer sheath is made of a PET material and is extruded outside the shielding layer.

Description

Technical Field

[0001] The utility model relates to the technical field of power cables, in particular to a water-cooled charging pile cable. Background Art

[0002] New energy electric vehicles have developed rapidly in recent years. Electric drive and control systems are the core of new energy electric vehicles and the biggest difference from traditional internal combustion engines. In pure electric vehicles equipped with only batteries, the role of batteries is the only power source for the vehicle drive system. The larger the capacity of the battery, the longer the range. At present, pure electric vehicles can travel about 100-300 kilometers after a full charge, while some models with higher configurations can travel about 500-700 kilometers. When the power is exhausted, the vehicle can be replenished with energy by replacing the battery or charging. The battery replacement method is faster than charging, but the number of battery replacement stations is not enough at present. Therefore, how to increase the charging speed has also become an important part of the development of new energy vehicles. How to achieve fast charging is usually to increase the charging power. When the voltage remains unchanged, the charging current must be increased, and the increase in current will directly lead to an increase in temperature. Therefore, how to quickly cool the cable has also become a research direction for technicians in this field. Chinese patent document CN210167151U discloses a cooling type charging pile cable, which includes a control twisted wire pair, a first control wire, a main power line core, a water inlet pipe and a ground wire. The main power line core is provided with two wires, which are located on the central axis of the cable. The two main power line cores are provided with a first control wire on one side, and two control twisted wire pairs are symmetrically provided on the outer side of the first control wire. The other side of the two main power line cores is provided with a ground wire. Two water inlet pipes are provided on the outer side of the ground wire. The control twisted wire pair, the first control wire, the main power line core, the water inlet pipe and the ground wire are twisted and connected; the main power line core includes a conductor, an outer insulating sleeve and an inner insulating sleeve, the outer side of the conductor is provided with an inner insulating sleeve, the outer side of the inner insulating sleeve is provided with an outer insulating sleeve, and the outer insulating sleeve is provided with a plurality of support bodies on the side opposite to the inner insulating sleeve, and a cavity is formed between each two adjacent support bodies, and the cavity is filled with cooling water and connected with the water inlet pipe. This structure is conducive to cooling the cable and increasing the charging current, but the increase in current will also generate electromagnetic radiation, which will interfere with the normal operation of other electronic components. Utility Model Content

[0003] The utility model aims to provide a water-cooled charging pile cable which has a simple structure and is conducive to improving the charging current.

[0004] The basic technical solution to achieve the purpose of the utility model is: a water-cooled charging pile cable, including a group of power cores, and its structural characteristics are: it also includes a signal core, a group of control cores, a liquid cooling tube, a shielding layer and an outer sheath. There are three types of power cores, namely the main power core, the second main power core and the third main power core. The main power core, the second main power core, the third main power core, the signal core, the control core and the liquid cooling tube are twisted into a cable and woven with tinned copper wire to form a shielding layer, and the braiding density is greater than 80%. The outer sheath is made of PET material, and the outer sheath is extruded outside the shielding layer.

[0005] Furthermore, in order to improve the roundness and tensile resistance of the cable: it also includes a filling layer, the filling layer is filled with cotton thread, the main power line core, the second main power line core, the third main power line core, the signal line core, the control line core, the liquid cooling tube and the cotton thread are twisted into a cable and then woven with tinned copper wire to form a shielding layer.

[0006] Furthermore, for high temperature safety: the main power core includes a power core conductor and a power core insulation. The power core insulation is made of PFA material, and the power core insulation is extruded outside the power core conductor.

[0007] Furthermore, for high temperature use safety: the second main power core includes a second power core conductor and a second power core insulation. The second power core insulation is made of PFA material, and the second power core insulation is extruded outside the second power core conductor.

[0008] Furthermore, for high temperature use safety: the third main power line core includes a third power line core conductor and a third power line core insulation. The third power line core insulation is made of PFA material, and the third power line core insulation is extruded outside the third power line core conductor.

[0009] Furthermore, in order to ensure the transmission of true and reliable signals: the signal core includes a signal main core and a signal wrapping layer. There are 4 signal main cores. The signal main core includes a signal conductor and a signal insulation. The signal insulation is made of PFA material, and the signal insulation is extruded outside the signal conductor. After the 4 signal main cores are twisted into a cable, they are first wrapped with an aluminum-plastic tape, and then wrapped with a PET wrapping tape to form a signal wrapping layer. The overlap rate of the aluminum-plastic tape wrapping is greater than or equal to 50%, and the overlap rate of the PET wrapping tape wrapping is greater than or equal to 20%.

[0010] Furthermore, it is easy to control: there are two types of control cores, which are respectively called the first control core and the second control core. The first control core includes a first control main core and a first wrapping layer. There are four first control main cores, and the first control main core includes a first conductor and a first insulation. The first insulation is made of PFA material, and the first insulation is extruded outside the first conductor. The four first control main cores are twisted into a cable and wrapped with a PET wrapping tape to form a first wrapping layer.

[0011] The second control core includes a second control main core and a second wrapping layer. There are two second control main cores, and the two second control main cores have the same structure, both including a second conductor and a second insulation. The second insulation is made of PFA material, and the second insulation is extruded outside the second conductor. After the two second control main cores are twisted into a cable, they are wrapped with a PET wrapping tape to form a second wrapping layer, and the wrapping overlap rate is greater than or equal to 20%.

[0012] Furthermore, in order to quickly cool down the cable: there are two liquid cooling pipes, both of which are high-temperature resistant TPV hoses.

[0013] The utility model has the following beneficial effects: (1) The water-cooled charging pile cable of the utility model has a simple structure and is provided with a liquid cooling pipe. The cable can be cooled by the liquid cooling pipe, thereby increasing the charging current. At the same time, a shielding layer is provided to reduce electromagnetic radiation and reduce interference with the surrounding environment and electronic components. (2) The insulation layer of the water-cooled charging pile cable of the utility model is made of PFA material, which is resistant to high temperatures and can withstand high temperatures of 210 degrees Celsius, ensuring the safety of the cable. (3) The water-cooled charging pile cable of the utility model is provided with a filling layer, and the filling rope is made of a plurality of cotton threads, which is conducive to ensuring the roundness of the cable and improving the tensile strength of the cable, making it easier to drag the cable. (4) The signal core of the water-cooled charging pile cable of the utility model is first wrapped with an aluminum-plastic tape, and then wrapped with a PET wrapping tape to form a second wrapping layer, which can be 100% covered by the shielding layer, effectively avoiding signal interference and improving the authenticity of the transmitted data. (5) The water-cooled charging pile cable of the utility model is connected in parallel through multiple power line cores, which is equivalent to increasing the power-on path of the circuit, making the current distribution more uniform, thereby reducing the impedance of the wires and the voltage drop of the circuit, and improving the power-on stability of the circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the water-cooled charging pile cable of the utility model.

[0015] Figure 2 This is a schematic diagram of the structure of the signal line core.

[0016] Figure 3 Schematic diagram of the first control line core structure.

[0017] Figure 4 Schematic diagram of the second control line core structure.

[0018] The reference numerals in the accompanying drawings are:

[0019] Main power line core 1, power line core conductor 1-1, power line core insulation 1-2,

[0020] The second main power line core 2, the second power line core conductor 2-1, the second power line core insulation 2-2,

[0021] The third main power line core 3, the third power line core conductor 3-1, the third power line core insulation 3-2,

[0022] Signal core 4, signal main core 4-1, signal wrapping layer 4-2, signal conductor 4-11, signal insulation 4-12,

[0023] first control core 5a, first control main core 5a-1, first conductor 5a-11, first insulation 5a-12, first wrapping layer 5a-2,

[0024] The second control core 5b, the second control main core 5b-1, the second conductor 5b-11, the second insulation 5b-12, the second wrapping layer 5b-2,

[0025] Liquid cooling tube 6, filling layer 7, shielding layer 8, outer sheath 9. DETAILED DESCRIPTION

[0026] In order to make the content of the utility model easier to understand, the utility model is further described in detail below according to specific embodiments and in combination with the accompanying drawings. It should be noted that similar numbers and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. At the same time, in the description of the utility model, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0027] (Example 1)

[0028] See Figures 1 to 4 The water-cooled charging pile cable of the utility model includes a group of power cores, a signal core 4, a group of control cores, a liquid cooling tube 6, a filling layer 7, a shielding layer 8 and an outer sheath 9. There are three types of power cores, namely the main power core 1, the second main power core 2 and the third main power core 3. There are two types of control cores, namely the first control core 5a and the second control core 5b. There are 12 main power cores 1, and the 12 main power cores 1 have the same structure, including a power core conductor 1-1 and a power core insulation 1-2. The power core conductor 1-1 is formed by twisting a number of silver-plated copper wires, with a nominal cross-section of 5 square millimeters. The power core insulation 1-2 is made of PFA material, which is resistant to high temperature and can withstand a high temperature of 210 degrees Celsius. The power core insulation 1-2 is extruded outside the power core conductor 1-1. 6 power core insulations 1-2 are red, and 6 power core insulations 1-2 are black.

[0029] There are four second main power cores 2, and the structures of the four second main power cores 2 are the same, including a second power core conductor 2-1 and a second power core insulation 2-2. The second power core conductor 2-1 is formed by twisting a number of silver-plated copper wires, with a nominal cross-section of 2 square millimeters. The second power core insulation 2-2 is made of PFA material, which is resistant to high temperatures and can withstand a high temperature of 210 degrees Celsius. The second power core insulation 2-2 is extruded outside the second power core conductor 2-1. Two second power core insulation auxiliaries-2 are red, and two second power core insulations 2-2 are black.

[0030] The third main power line core 3 includes a third power line core conductor 3-1 and a third power line core insulation 3-2. The third power line core conductor 3-1 is formed by twisting a number of silver-plated copper wires, with a nominal cross-section of 1.3 square millimeters. The third power line core insulation 3-2 is made of PFA material, which is resistant to high temperatures and can withstand a high temperature of 210 degrees Celsius. The third power line core insulation 3-2 is extruded outside the third power line core conductor 3-1.

[0031] The signal core 4 includes a signal main core 4-1 and a signal wrapping layer 4-2. There are 4 signal main cores 4-1. The signal main core 4-1 includes a signal conductor 4-11 and a signal insulation 4-12. The signal conductor 4-11 is formed by twisting a number of silver-plated copper wires, with a nominal cross-section of 0.2 square millimeters. The signal insulation 4-12 is made of PFA material, which is resistant to high temperatures and can withstand a high temperature of 210 degrees Celsius. The signal insulation 4-12 is extruded outside the signal conductor 4-11. After the 4 signal main cores 4-1 are twisted into a cable, they are first wrapped with an aluminum-plastic tape, and then wrapped with a PET wrapping tape to form a signal wrapping layer 4-2. The overlap rate of the aluminum-plastic tape wrapping is greater than or equal to 50%, and the overlap rate of the PET wrapping tape wrapping is greater than or equal to 20%.

[0032] There are two first control cores 5a, and the two first control cores 5a have the same structure, both including a first control main core 5a-1 and a first wrapping layer 5a-2. There are four first control main cores 5a-1, and the first control main core 5a-1 includes a first conductor 5a-11 and a first insulation 5a-12. The first conductor 5a-11 is formed by twisting a number of silver-plated copper wires, with a nominal cross-section of 0.2 square millimeters. The first insulation 5a-12 is made of PFA material, which is resistant to high temperatures and can withstand a high temperature of 210 degrees Celsius. The first insulation 5a-12 is extruded outside the first conductor 5a-11. After the four first control main cores 5a-1 are twisted into a cable, they are wrapped with a PET wrapping tape to form a first wrapping layer 5a-2, and the wrapping overlap rate is greater than or equal to 20%.

[0033] The second control core 5b includes a second control main core 5b-1 and a second wrapping layer 5b-2. There are two second control main cores 5b-1, and the two second control main cores 5b-1 have the same structure, both including a second conductor 5b-11 and a second insulation 5b-12. The second conductor 5b-11 is formed by twisting a number of silver-plated copper wires, with a nominal cross-section of 0.5 square millimeters. The second insulation 5b-12 is made of PFA material, which is resistant to high temperatures and can withstand a high temperature of 210 degrees Celsius. The second insulation 5b-12 is extruded outside the second conductor 5b-11. After the two second control main cores 5b-1 are twisted into a cable, they are wrapped with a PET wrapping tape to form a second wrapping layer 5b-2, and the wrapping overlap rate is greater than or equal to 20%.

[0034] There are two liquid cooling pipes 6, and the two liquid cooling pipes 6 have the same structure, and are both high temperature resistant TPV hoses. The liquid cooling pipes 6 are arranged along the radial direction of the cable, and are respectively located on both sides of the cable axis, so that a larger area can be used to absorb heat.

[0035] The filling layer 7 is filled with cotton thread. The power core, control core, signal core 4, liquid cooling tube 6 and cotton thread are twisted into a cable and then braided with tinned copper wire to form a shielding layer 8. The braiding density is greater than 80%.

[0036] The outer sheath 9 is made of PET material and is extruded outside the shielding layer 8 .

[0037] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A water-cooled charging pile cable, comprising a group of power cores, characterized in that: It also includes a signal line core (4), a group of control line cores, a liquid cooling tube (6), a shielding layer (8) and an outer sheath (9); there are three types of power line cores, namely a main power line core (1), a second main power line core (2) and a third main power line core (3); The main power line core (1), the second main power line core (2), the third main power line core (3), the signal line core (4), the control line core and the liquid cooling tube (6) are twisted into a cable and then braided with tinned copper wires to form a shielding layer (8), with a braiding density greater than 80%. The outer sheath (9) is made of PET material, and the outer sheath (9) is extruded outside the shielding layer (8).

2. The water-cooled charging pile cable according to claim 1, characterized in that: It also includes a filling layer (7), the filling layer (7) is filled with cotton thread, and the main power line core (1), the second main power line core (2), the third main power line core (3), the signal line core (4), the control line core, the liquid cooling tube (6) and the cotton thread are twisted into a cable and then woven with tinned copper wire to form a shielding layer (8).

3. The water-cooled charging pile cable according to claim 1 or 2, characterized in that: The main power line core (1) comprises a power line core conductor (1-1) and a power line core insulation (1-2); the power line core insulation (1-2) is made of PFA material, and the power line core insulation (1-2) is extruded outside the power line core conductor (1-1).

4. The water-cooled charging pile cable according to claim 1 or 2, characterized in that: The second main power line core (2) comprises a second power line core conductor (2-1) and a second power line core insulation (2-2); the second power line core insulation (2-2) is made of PFA material, and the second power line core insulation (2-2) is extruded outside the second power line core conductor (2-1).

5. The water-cooled charging pile cable according to claim 1 or 2, characterized in that: The third main power line core (3) comprises a third power line core conductor (3-1) and a third power line core insulation (3-2); the third power line core insulation (3-2) is made of PFA material, and the third power line core insulation (3-2) is extruded outside the third power line core conductor (3-1).

6. The water-cooled charging pile cable according to claim 1 or 2, characterized in that: The signal core (4) comprises a signal main core (4-1) and a signal wrapping layer (4-2); there are four signal main cores (4-1); the signal main core (4-1) comprises a signal conductor (4-11) and a signal insulation (4-12); the signal insulation (4-12) is made of PFA material, and the signal insulation (4-12) is extruded outside the signal conductor (4-11); after the four signal main cores (4-1) are twisted into a cable, they are first wrapped with an aluminum-plastic tape, and then wrapped with a PET wrapping tape to form a signal wrapping layer (4-2); the aluminum-plastic tape wrapping overlap rate is greater than or equal to 50%, and the PET wrapping tape wrapping overlap rate is greater than or equal to 20%.

7. The water-cooled charging pile cable according to claim 1 or 2, characterized in that: There are two types of control cores, which are respectively called a first control core (5a) and a second control core (5b); the first control core (5a) comprises a first control main core (5a-1) and a first wrapping layer (5a-2); there are four first control main cores (5a-1), and the first control main cores (5a-1) comprise a first conductor (5a-11) and a first insulation (5a-12); the first insulation (5a-12) is made of PFA material, and the first insulation (5a-12) is extruded outside the first conductor (5a-11); the four first control main cores (5a-1) are twisted into a cable and then wrapped with a PET wrapping tape to form a first wrapping layer (5a-2); The second control core (5b) comprises a second control main core (5b-1) and a second wrapping layer (5b-2); there are two second control main cores (5b-1), and the two second control main cores (5b-1) have the same structure, and both comprise a second conductor (5b-11) and a second insulation (5b-12); the second insulation (5b-12) is made of PFA material, and the second insulation (5b-12) is extruded outside the second conductor (5b-11); the two second control main cores (5b-1) are twisted into a cable and then wrapped with a PET wrapping tape to form a second wrapping layer (5b-2), and the wrapping overlap rate is greater than or equal to 20%.

8. The water-cooled charging pile cable according to claim 1 or 2, characterized in that: There are two liquid cooling pipes (6), and both of the two liquid cooling pipes (6) are high temperature resistant TPV hoses.

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