Long-life liquid-cooling large-flow fast-charging new energy automobile high-voltage cable

Abstract

The utility model relates to a long-life liquid-cooling large-flow fast-charging high-voltage cable for a new energy automobile, and the cable comprises a plurality of power wire core units which are externally provided with neutral wire core units. A liquid cooling pipeline, a control wire core unit and an auxiliary wire core unit are arranged in an external gap between the neutral wire core unit and the power wire core unit, a filler is arranged outside the power wire core unit, the neutral wire core unit, the liquid cooling pipeline, the control wire core unit and the auxiliary wire core unit, and a sheath is arranged outside the filler. The cable is good in heat dissipation effect, the current-carrying capacity of the cable is greatly improved, and the service life of the cable is prolonged.

Description

Technical Field

[0001] This utility model relates to a cable, specifically a high-voltage cable for new energy vehicles. Background Technology

[0002] In recent years, my country has been advocating the development of the new energy industry, and new energy vehicles have been vigorously promoted with the support of national policies. Consequently, high-voltage cables for new energy hybrid and pure electric vehicles have emerged. These high-voltage connection cables inside new energy vehicles are power supply connection lines, primarily used for high-voltage transmission within the vehicle.

[0003] Existing new energy vehicle charging cables typically use metal conductors such as copper and aluminum, and plastic materials such as polyethylene (PE) or polyvinyl chloride (PVC) as the sheath insulation layer. However, under high temperature and high pressure charging conditions, these materials are susceptible to thermal expansion, softening, and aging, leading to problems such as insulation aging and current leakage in new energy charging cables under high temperature and high pressure charging conditions, which seriously threatens the performance and safety of the cables. Utility Model Content

[0004] Purpose of the invention: The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a long-life liquid-cooled high-flow-rate fast-charging high-voltage cable for new energy vehicles with good heat dissipation, which greatly increases the current carrying capacity of the cable and extends the service life of the cable.

[0005] Technical Solution: To solve the above-mentioned technical problems, the present invention provides a long-life liquid-cooled high-flow-rate fast-charging high-voltage cable for new energy vehicles, comprising several power core units, a neutral core unit outside the power core units, a liquid-cooling pipe, a control core unit, and an auxiliary core unit in the external gap between the neutral core unit and the power core units, each power core unit including a power core conductor with power core insulation outside, each neutral core unit including a neutral core conductor with neutral core insulation outside, each control core unit including a control core conductor with control core insulation outside, and each auxiliary core unit including an auxiliary core conductor with auxiliary core insulation outside. A filler is provided outside the power core unit, neutral core unit, liquid-cooling pipe, control core unit, and auxiliary core unit, and a sheath is provided outside the filler.

[0006] Furthermore, two power core units are provided, namely power core unit I and power core unit II, which are arranged close together. One neutral core unit is provided. Three liquid cooling pipes are provided in the external gap between the neutral core unit and the power core unit, namely liquid cooling pipe I, liquid cooling pipe II, and liquid cooling pipe III. A control core unit is provided in the external gap between liquid cooling pipe II and power core unit II. An auxiliary core unit I is provided in the external gap between liquid cooling pipe III and power core unit I. An auxiliary core unit II is provided in the external gap between liquid cooling pipe III and power core unit II.

[0007] Furthermore, the sheath includes an inner sheath and an outer sheath.

[0008] Furthermore, the liquid cooling pipe is a silicone oil cooling pipe.

[0009] Furthermore, a gap is left between the power core unit and the neutral core unit.

[0010] Furthermore, the liquid cooling pipes I, II, and III are spaced apart outside the neutral conductor unit and the power conductor unit. The liquid cooling pipes I and II are in contact with the sheath, while the liquid cooling pipe III has a gap with the sheath. The liquid cooling pipes I, II, and III are close to the power conductor unit I and the neutral conductor unit.

[0011] Furthermore, the control core unit is disposed close to the liquid cooling pipe II and the power core unit II, and a gap is left between the control core unit and the sheath.

[0012] Furthermore, the auxiliary core unit I is disposed close to the power core unit I and the liquid cooling pipe III, and the auxiliary core unit I is in contact with the sheath. The auxiliary core unit II is disposed close to the power core unit II and the liquid cooling pipe III, and the auxiliary core unit II is in contact with the sheath.

[0013] Beneficial effects: Compared with the prior art, the significant advantages of this utility model are:

[0014] (1) The conductor resistance meets the requirements for Class 6 conductors in standard 3956;

[0015] (2) Special ink is used for insulating lettering, and talcum powder is applied to the insulating surface after printing;

[0016] (3) The minimum tensile strength of the insulation is 10 MPa, the minimum elongation at break is 300%, the heat shrinkage is 130±3℃ for 1 hour, and the maximum allowable shrinkage rate is 4%;

[0017] (4) The inner sheath has a minimum tensile strength of 10 MPa, a minimum elongation at break of 300%, and a maximum allowable shrinkage rate of 3% after 5 hours (5 cycles) at a heat shrinkage temperature of 80 ± 2℃.

[0018] (5) The minimum tensile strength of the outer sheath is 20 MPa, the minimum elongation at break is 300%, the heat shrinkage is 80 ± 2℃, and the maximum allowable shrinkage rate is 3% after 5 hours (5 cycles);

[0019] (6) The intermediate silicone oil cooling pipe greatly increases the cable current carrying capacity and extends the cable service life. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] like Figure 1 As shown, the long-life liquid-cooled high-flow fast-charging high-voltage cable for new energy vehicles of this utility model includes two power core units, namely power core unit I and power core unit II, which are arranged close together. A neutral core unit is provided outside the power core units. Three liquid-cooled pipes 9, namely liquid-cooled pipe I, liquid-cooled pipe II, and liquid-cooled pipe III, are provided in the external gap between the neutral core unit and the power core unit. The liquid-cooled pipes 9 are silicone oil cooling pipes. A control core unit is provided in the external gap between liquid-cooled pipe II and power core unit II. An auxiliary core unit I is provided in the external gap between liquid-cooled pipe III and power core unit I. An auxiliary conductor unit II is provided. The power conductor unit includes a power conductor 1, and a power conductor insulation 2 is provided outside the power conductor 1. The neutral conductor unit includes a neutral conductor 3, and a neutral conductor insulation 4 is provided outside the neutral conductor 3. The control conductor unit includes a control conductor 5, and a control conductor insulation 6 is provided outside the control conductor 5. The auxiliary conductor unit includes an auxiliary conductor 7, and an auxiliary conductor insulation 8 is provided outside the auxiliary conductor 7. Filler is provided outside the power conductor unit, neutral conductor unit, liquid cooling pipe 9, control conductor unit, and auxiliary conductor unit. A sheath 10 is provided outside the filler. The sheath 10 includes an inner sheath and an outer sheath.

[0023] A gap is left between the power core unit and the neutral core unit.

[0024] Liquid cooling pipes I, II, and III are spaced apart outside the neutral conductor unit and the power conductor unit. Liquid cooling pipes I and II are in contact with the sheath 10, while liquid cooling pipe III has a gap with the sheath 10. Liquid cooling pipe I is close to the power conductor unit I and the neutral conductor unit, liquid cooling pipe II is close to the power conductor unit II and the neutral conductor unit, and liquid cooling pipe III is close to the power conductor unit I and the power conductor unit II.

[0025] The control core unit is arranged close to the liquid cooling pipe II and the power core unit II, and a gap is left between the control core unit and the sheath 10.

[0026] The auxiliary core unit I is arranged close to the power core unit I and the liquid cooling pipe III, and the auxiliary core unit I is in contact with the sheath 10. The auxiliary core unit II is arranged close to the power core unit II and the liquid cooling pipe III, and the auxiliary core unit II is in contact with the sheath 10.

[0027] The conductor resistance in this invention meets the requirements for Class 6 conductors in the 3956 standard; the insulation markings use special ink, and talcum powder is applied to the insulation surface after marking; the minimum tensile strength of the insulation is 10MPa, the minimum elongation at break is 300%, and the maximum allowable shrinkage rate is 4% after heat shrinkage at 130±3℃ for 1 hour; the minimum tensile strength of the inner sheath is 10MPa, the minimum elongation at break is 300%, and the maximum allowable shrinkage rate is 3% after heat shrinkage at 80±2℃ for 5 hours (5 cycles); the minimum tensile strength of the outer sheath is 20MPa, the minimum elongation at break is 300%, and the maximum allowable shrinkage rate is 3% after heat shrinkage at 80±2℃ for 5 hours (5 cycles); a silicone oil cooling pipe is reserved in the middle, which greatly increases the current carrying capacity of the cable and extends its service life.

[0028] This utility model provides a concept and method. There are many methods and approaches to implement this technical solution. The above description is only a preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model. These improvements and modifications should also be considered as the protection scope of this utility model. All components not explicitly stated in this embodiment can be implemented using existing technology.

Claims

1. A long-life liquid-cooled high-flow fast-charging new energy vehicle high-voltage cable, characterized in that: It includes several power core units, a neutral core unit is provided outside the power core unit, a liquid cooling pipe (9), a control core unit and an auxiliary core unit are provided in the external gap between the neutral core unit and the power core unit, the power core unit includes a power core conductor (1), a power core insulation (2) is provided outside the power core conductor (1), the neutral core unit includes a neutral core conductor (3), a neutral core insulation (4) is provided outside the neutral core conductor (3), the control core unit includes a control core conductor (5), a control core insulation (6) is provided outside the control core conductor (5), the auxiliary core unit includes an auxiliary core conductor (7), an auxiliary core insulation (8) is provided outside the auxiliary core conductor (7), a filler is provided outside the power core unit, the neutral core unit, the liquid cooling pipe (9), the control core unit and the auxiliary core unit, and a sheath (10) is provided outside the filler. ​ 2. The long-life liquid-cooled high-flow fast-charging new energy vehicle high-voltage cable according to claim 1, characterized in that: Two power core units are provided, namely power core unit I and power core unit II, which are arranged close to each other. One neutral core unit is provided. Three liquid cooling pipes (9) are provided in the external gap between the neutral core unit and the power core unit, namely liquid cooling pipe I, liquid cooling pipe II and liquid cooling pipe III. A control core unit is provided in the external gap between liquid cooling pipe II and power core unit II. An auxiliary core unit I is provided in the external gap between liquid cooling pipe III and power core unit I. An auxiliary core unit II is provided in the external gap between liquid cooling pipe III and power core unit II.

3. The long-life liquid-cooled high-flow fast-charging new energy vehicle high-voltage cable according to claim 1, characterized in that: The sheath (10) includes an inner sheath and an outer sheath.

4. The long-life liquid-cooled high-flow fast-charging new energy vehicle high-voltage cable according to claim 1, characterized in that: The liquid cooling pipe (9) is a silicone oil cooling pipe.

5. The long-life liquid-cooled high-flow-rate fast-charging high-voltage cable for new energy vehicles according to claim 1, characterized in that: A gap is left between the power core unit and the neutral core unit.

6. The long-life liquid-cooled high-flow rapid-charging new energy vehicle high-voltage cable according to claim 2, characterized in that: The liquid cooling pipes I, II, and III are spaced apart outside the neutral core unit and the power core unit. The liquid cooling pipes I and II are in contact with the sheath (10), and there is a gap between the liquid cooling pipe III and the sheath (10). The liquid cooling pipe I is close to the power core unit I and the neutral core unit, the liquid cooling pipe II is close to the power core unit II and the neutral core unit, and the liquid cooling pipe III is close to the power core unit I and the power core unit II.

7. The long-life liquid-cooled high-flow-rate fast-charging high-voltage cable for new energy vehicles according to claim 2, characterized in that: The control core unit is closely arranged with the liquid cooling pipe II and the power core unit II, and there is a gap between the control core unit and the sheath (10).

8. The long-life liquid-cooled high-flow rapid-charging new energy vehicle high-voltage cable according to claim 2, characterized in that: The auxiliary core unit I is arranged close to the power core unit I and the liquid cooling pipe III, and the auxiliary core unit I is in contact with the sheath (10). The auxiliary core unit II is arranged close to the power core unit II and the liquid cooling pipe III, and the auxiliary core unit II is in contact with the sheath (10).

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