Cable structure, cable cooling device and vehicle

Abstract

The present invention provides a cable structure, a cable cooling device, and a vehicle, the cable structure comprising a cable body and a cooling sleeve wound around the outside of the cable body, the cooling sleeve being provided with a sleeve chamber, the cooling sleeve being connected to a water supply joint and a return joint communicating with the sleeve chamber, and configured such that cooling water flows through the water supply joint, enters the sleeve chamber, and flows out from the return joint. The present invention can solve the technical problem of difficulty in cooling cables.

Description

[Technical Field]

[0001] The present invention relates to the technical field of electrical equipment, and in particular to a cable structure, a cable cooling device and a vehicle.

[0002] (Related Applications) This application claims priority to a Chinese patent application bearing patent application number 202111313327.0, filed on November 8, 2021, and titled "Cable structure, cable cooling device and vehicle." [Background technology]

[0003] Current electric vehicles have long charging times, which is a bottleneck that limits the widespread use of electric vehicles.Currently, the current required for fast charging electric vehicles reaches 150-400A, and this high current causes the charging cable to generate a lot of heat, which is also considered to be the main reason for limiting the charging current of electric vehicles.

[0004] To solve this problem, on the one hand, it is urgently necessary to increase the cross-sectional area of ​​the cable to reduce the heat generation of the cable, but this will significantly increase the cost of the cable, and on the other hand, cooling technology is adopted to reduce the temperature of the cable and cool it.

[0005] Currently, liquid cooling and air cooling technologies are commonly used to cool high-current charging cables. Liquid cooling technology has a good cooling effect, but the need to install a separate cooling pipe in the cable makes the system structure complicated, places high demands on safety and stability, and increases costs. Air cooling technology is limited by installation size and space, has low cooling efficiency, and generates additional noise, which affects the vehicle's overall NVH (noise, vibration, and harshness).

[0006] Therefore, in the field of electric current transmission, there is an urgent need for a cable that can quickly lower the temperature of the cable and has a cooling function. Summary of the Invention [Problem to be solved by the invention]

[0007] SUMMARY OF THE INVENTION In order to solve the problem of difficulty in cooling cables, the present invention aims to provide a cable structure, a cable cooling device and a vehicle. [Means for solving the problem]

[0008] The present invention achieves the above object by the following technical means.

[0009] The present invention provides a cable structure comprising a cable body and a cooling sleeve wrapped around the outside of the cable body.

[0010] The present invention provides a cable cooling device comprising a cooling sleeve that can be wrapped around the outside of a cable main body, a pump, and a cooling system, wherein the cooling sleeve is provided with a sleeve chamber, and a water supply joint and a return joint that communicate with the sleeve chamber are connected to the cooling sleeve, and the cooling sleeve is configured so that cooling water flows through the water supply joint, enters the sleeve chamber, and flows out from the return joint, and the pump and the cooling system are connected to the water supply joint and the return joint.

[0011] The present invention provides a vehicle comprising a pump, a cooling system, and the above cable structure, wherein the pump and the cooling system are connected to a water supply joint and a return joint.

[0012] The present invention has the following features and advantages:

[0013] 1. The cooling sleeve is attached to the cable body, and the cooling sleeve absorbs the heat from the cable body, and the cooling water flows through the cooling sleeve to reduce the heat and cool the cable body, thereby significantly reducing the temperature rise of the cable circuit. The cooling sleeve and the cable body are wrapped and combined, and the cooling sleeve is deformed according to the changes in the cable body, so the cooling sleeve has high adaptability and can be matched to the outer diameter of the cable body, which has the advantage of being easy and flexible to assemble.

[0014] 2. The water supply joint and return joint are respectively provided at one end or both ends of the cable, which can be selected according to the length of the cable and the specific environment of the assembly, thereby realizing more optimal assembly and cooling means.

[0015] 3. The cooling sleeve is spirally shaped and has a smaller inner diameter than the cable, making it easier to wrap around the cable and more closely fitted to the cable, achieving better heat transfer.

[0016] 4. A temperature sensor can be installed to quickly obtain the real-time temperature of the cable, and the temperature can be adjusted timely using the pump and cooling system.

[0017] 5. The cooling sleeve is not integrated with the cable body but is assembled around the cable body. If the cooling sleeve is damaged, it can be replaced directly without removing the cable body. Since the cooling sleeve is spirally wrapped around the cable body, there is no need to turn off the power to the cable body when removing it, which makes maintenance and replacement convenient. Furthermore, since the cable body is protected from the outside by an insulating layer, if cooling water leaks into the cooling sleeve, it will not cause a short circuit in the cable body.

[0018] The following drawings are merely for explaining and interpreting the present invention in a schematic manner, and the scope of the present invention is not limited thereto. [Brief explanation of the drawings]

[0019] [Figure 1] FIG. 1 is a structural schematic diagram of one embodiment of a cable structure according to the present invention. [Figure 2] FIG. 2 is a structural schematic diagram of another embodiment of a cable structure according to the present invention. [Figure 3] FIG. 3 is an enlarged view of the cable structure shown in FIG. [Figure 4] FIG. 4 is an enlarged view of the cable structure shown in FIG. [Figure 5] FIG. 5 is a schematic diagram of a water outlet joint and its connection structure in the cable structure shown in FIG. [Figure 6] FIG. 6 is a schematic diagram of a water outlet joint and its connection structure in the cable structure shown in FIG. [Figure 7] FIG. 7 is a schematic diagram of a water outlet joint and its connection structure in the cable structure shown in FIG. [Figure 8] FIG. 8 is a schematic diagram of a water outlet joint and its connection structure in the cable structure shown in FIG. [Figure 9] FIG. 9 is a schematic diagram of a water supply joint and its connection structure in the cable structure shown in FIG. [Figure 10] FIG. 10 is a schematic diagram of a water supply joint and its connection structure in the cable structure shown in FIG. [Figure 11] FIG. 11 is a schematic diagram of the water outlet joint, the water supply structure, and the connection structure thereof in the cable structure shown in FIG. [Figure 12] FIG. 12 is a schematic diagram of the water outlet joint, the water supply structure, and the connection structure thereof in the cable structure shown in FIG. [Figure 13] FIG. 13 is a schematic diagram of the water outlet joint, the water supply structure, and the connection structure thereof in the cable structure shown in FIG. [Figure 14] FIG. 14 is a schematic diagram of the combination of the cable body and the cooling sleeve in the cable structure according to the present invention. [Figure 15] FIG. 15 is a schematic diagram of the combination of the cable body and the cooling sleeve in the cable structure according to the present invention. [Figure 16] FIG. 16 is a schematic diagram of the combination of the cable body and the cooling sleeve in the cable structure according to the present invention. [Figure 17] FIG. 17 is a schematic diagram of the combination of the cable body and the cooling sleeve in the cable structure according to the present invention. [Figure 18] FIG. 18 is a schematic diagram of the combination of the cable body and the cooling sleeve in the cable structure according to the present invention. [Figure 19] FIG. 19 is a schematic diagram of a cable cooling device according to the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0020] In order to make the technical features, objects and effects of the present invention more clearly understood, the best mode of the present invention will be described with reference to the drawings. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0021] Example 1 The present invention provides a cable structure, and as shown in Figures 1 to 15, the cable structure comprises a cable body 10 and a cooling sleeve 20 wrapped around the outside of the cable body 10, the cooling sleeve 20 is provided with a sleeve chamber 30, and the cooling sleeve 20 is connected to a water supply joint 40 and a return joint 50 which are communicated with the sleeve chamber 30, so that cooling water flows through the water supply joint 40, enters the sleeve chamber 30 and flows out from the return joint 50.

[0022] The cooling sleeve 20 is attached to the cable body 10, and absorbs heat from the cable body 10. Cooling water flows through the cooling sleeve 20 to reduce heat and cool the cable body 10, thereby significantly reducing the temperature rise of the cable circuit. The cooling sleeve 20 is wrapped around the cable body 10 and can be deformed according to changes in the cable body 10. The cooling sleeve 20 has high adaptability and can be matched to the outer diameter of the cable body 10, offering the advantages of easy and flexible installation.

[0023] The cable structure is applicable to electric vehicles, and the cable body 10 can be a high-power cable for electric vehicles. The cooling sleeve 20 can be made of PVC (Polyvinyl chloride) or silica gel.

[0024] The cross section of the sleeve chamber 30 has a width direction 21 and a thickness direction 22, and the side walls of the sleeve chamber 30 in the width direction 21 contact the cable main body 10. The cross section of the sleeve chamber 30 has a flat shape, and the size of the sleeve chamber 30 in the width direction 21 is larger than the size of the sleeve chamber 30 in the thickness direction 22. In one embodiment, as shown in Figures 6 and 12, a large contact area is provided between the side walls of the sleeve chamber 30 and the cable main body 10, making it easier for the cooling sleeve 20 to absorb heat from the cable main body 10. For example, the cross section of the sleeve chamber 30 is rectangular.

[0025] In one embodiment, the ratio of the width direction 21 size of the sleeve chamber 30 to the thickness direction 22 size ranges from 1:1 to 10:1. The width direction and thickness direction sizes of the sleeve chamber 30 determine the cooling effect of the cooling sleeve 20, and to verify the effect of the width direction and thickness direction size ratio of the sleeve chamber 30 on the performance of the cooling sleeve 20, the inventors used 10 cable structures with the same cross-sectional area, material, and length, passed the same current, and cooled the cable structures using sleeve chambers 30 with different width direction and thickness direction size ratios, and read out the temperature rise values ​​for each cable structure and recorded them in Table 1.

[0026] The experimental method was as follows: In a sealed environment, cable structures of sleeve chambers 30 with different width-to-thickness ratios were used, and the same current was passed through them. The temperatures before and after the current was passed were recorded, and the absolute value of the difference was obtained. In this example, a temperature rise of less than 50 K was considered acceptable.

[0027] Table 1 shows the effect on the temperature rise of the cable structure due to sleeve chambers 30 having different width to thickness ratios.

[0028] [Table 1]

[0029] As can be seen from the table above, when the ratio of the width 21 to the thickness 22 of the sleeve chamber 30 is less than 1:1, the width 21 of the sleeve chamber 30 is smaller than the thickness 22, resulting in a small contact area between the side walls of the sleeve chamber 30 and the cable body 10, which makes it difficult for the cooling sleeve 20 to absorb heat from the cable body 10 and results in a temperature rise greater than the acceptable limit. When the ratio of the width 21 to the thickness 22 of the sleeve chamber 30 is greater than 10:1, the center of the width of the sleeve chamber 30 lacks an internal support structure and is too wide, making it prone to contact with the inner wall of the center of the sleeve chamber 30. This slows the rate at which the cooling water passes through the cooling sleeve 20, reducing the cooling effect and resulting in a temperature rise greater than the acceptable limit. Therefore, it is preferable to set the ratio of the width 21 to the thickness 22 of the sleeve chamber 30 between 1:1 and 10:1.

[0030] In one embodiment, the sleeve chamber 30 comprises a first chamber 31 and a second chamber 32 arranged in parallel, and as shown in Figures 2, 4 and 11-13, a communication channel 34 is provided at the first end of the cooling sleeve 20, and the communication channel 34 is respectively connected to the first chamber 31 and the second chamber 32, and both the water supply connector 40 and the return connector 50 are provided at the second end of the cooling sleeve 20, and the water supply connector 40 is connected to the first chamber 31, and the return connector 50 is connected to the second chamber 32.

[0031] Furthermore, both the side walls of the first chamber 31 and the second chamber 32 are in contact with the cable body 10, and as shown in Figures 11 and 12, the first chamber 31 and the second chamber 32 are arranged along the width direction 21, and both the side walls of the first chamber 31 in the width direction 21 and the side walls of the second chamber 32 in the width direction 21 are in contact with the cable body 10, so that the cooling water can absorb heat from the cable body 10 both during its inflow and outflow, which helps the cooling water to fully perform its cooling function.

[0032] 11 , the cooling sleeve 20 includes a sleeve chamber partition plate 33 disposed between the first chamber 31 and the second chamber 32. The sleeve chamber partition plate 33 separates the first chamber 31 and the second chamber 32, allowing the cooling water to flow from the second end of the cooling sleeve 20 through the first chamber 31 to the first end of the cooling sleeve 20, and then through the second chamber 32 to the second end of the cooling sleeve 20. The structure of the communicating channel 34 is not limited to one type. For example, the communicating channel 34 may be a communicating pipe, one end of which is connected to the first chamber 31 and the other end of which is connected to the second chamber 32. In one embodiment of the present invention, the communicating channel 34 is a through-hole disposed in the sleeve chamber partition plate 33.

[0033] In another embodiment, as shown in Figures 1, 3 and 5-10, the water supply joint 40 and the water return joint 50 are provided at both ends of the cooling sleeve 20, respectively, and the cooling water flows through the cooling sleeve 20 in one direction.

[0034] This cable structure can be flexibly applied and can be flexibly matched to the overall layout and process line depending on the application environment, for example, taking into account the layout and installation process of high-voltage electricity in the entire vehicle, such as in an embodiment in which the water supply joint 40 and the return joint 50 are provided at both ends as shown in Figure 1, or in an embodiment in which the water supply joint 40 and the return joint 50 are provided at the same end as shown in Figure 2.

[0035] In one embodiment, the return joint 50 is provided with a return cache chamber 51. As shown in Figures 6-8 and 12-13, the cross-sectional area of ​​the return cache chamber 51 is larger than the cross-sectional area of ​​the sleeve chamber 30 communicating with the return joint 50. The return cache chamber 51 buffers the cooling water, making the flow rate of the cooling water gentler and helping the cooling water absorb heat from the cable body 10, thereby ensuring stable heat transmission.

[0036] In one embodiment, the water supply joint 40 is provided with a water supply cache chamber 41. As shown in Figures 9 to 12, the cross-sectional area of ​​the water supply cache chamber 41 is larger than the cross-sectional area of ​​the sleeve chamber 30 communicating with the water supply joint 40. The water supply cache chamber 41 buffers the cooling water, making the flow rate of the cooling water slower, which helps the cooling water absorb heat from the cable body 10 and ensures the stability of the cooling function.

[0037] 7-8, 10 and 13, the water supply joint 40 is fitted externally to the cooling sleeve 20, and the return joint 50 is fitted externally to the cooling sleeve 20. Furthermore, the water supply joint 40 is fitted internally within the cooling sleeve 20, and the return joint 50 is fitted internally within the cooling sleeve 20, which makes assembly between the water supply joint 40 and the cooling sleeve 20 and between the return joint 50 and the cooling sleeve 20 easier.

[0038] Furthermore, the water supply joint 40 and the cooling sleeve 20 are tightly fitted together, and an adhesive layer is provided between them. The return joint 50 and the cooling sleeve 20 are tightly fitted together, and an adhesive layer is provided between them, which provides tight contact between the water supply joint 40 and the cooling sleeve 20 and between the return joint 50 and the cooling sleeve 20, thereby improving sealing performance.

[0039] In one embodiment of the present invention, the cooling sleeve 20 has a spiral shape in its free state, and because the cooling sleeve 20 has elasticity, it can easily wrap around the cable body 10 and deform according to changes in the cable body 10, resulting in a tighter connection between the cooling sleeve 20 and the cable body 10. The cooling sleeve 20 has the property of automatically restoring its shape, which makes it easy for the inner diameter of the cooling sleeve 20 and the outer diameter of the cable to match, maintaining a certain interference fit and ensuring tightness of the fit.

[0040] In one embodiment, the ratio of the width of the cooling sleeves 20 to the pitch in the assembled state ranges from 40% to 98%. In the assembled state, the pitch of the cooling sleeves 20 is the distance between the centers of two adjacent cooling sleeves 20 along the axial direction of the cable body 10. If the ratio of the width of the cooling sleeves 20 to the pitch is too low, the covering area of ​​the cooling sleeves 20 on the cable body 10 will be small, the cooling effect will not be achieved, and the temperature rise of the cable body 10 will be poor. If the ratio of the width of the cooling sleeves 20 to the pitch is too high, the temperature rise will be acceptable, but the cooling sleeves 20 will be arranged too closely, resulting in poor flexibility of the cable structure and difficulty in assembly.

[0041] To verify the effect of the ratio of the width of the cooling sleeve 20 to the pitch on the temperature rise of a cable structure, the inventors used 10 cable structures with the same cross-sectional area, material, and length, passed the same current, and cooled the cable structures based on different ratios of the width of the cooling sleeve 20 to the pitch. The temperature rise values ​​for each cable structure were recorded and recorded in Table 2. The experiment was conducted in a sealed environment using cable structures with cooling sleeves 20 having different ratios of the width of the cooling sleeve 20 to the pitch, and the temperatures before and after the current was passed were recorded, and the absolute value of the difference was obtained. In this example, a temperature rise of less than 50 K was considered acceptable.

[0042] To verify the influence of the ratio of the width of the cooling sleeve 20 to the pitch on the bending performance of the cable structure, the inventors used 10 cable structures with the same cross-sectional area, material, and length, and bent the cable structures to the maximum radian based on different ratios of the width of the cooling sleeve 20 to the pitch. They measured the angle between the tangent at one end of the arc and the tangent at the midpoint of the arc and recorded the results in Table 2. In this experiment, an angle greater than 30° was considered to be acceptable.

[0043] Table 2 shows the effect on the temperature rise and flexibility of the cable structure with cooling sleeves 20 having different width-wise size to pitch ratios.

[0044] [Table 2]

[0045] As shown in Table 2, when the ratio of the width of the cooling sleeve 20 to the pitch is less than 40%, the covering area of ​​the cable main 10 by the cooling sleeve 20 is too small to achieve the desired cooling effect, resulting in poor temperature rise in the cable main 10. When the ratio of the width of the cooling sleeve 20 to the pitch is more than 98%, the temperature rise of the cable main 10 passes the test, but the reduction in temperature rise is not significant, and the bending angle of the cable structure is poor, resulting in poor bending performance, low flexibility, and difficulty in assembly. Therefore, it is preferable to set the ratio of the width of the cooling sleeve 20 to the pitch in the range of 40% to 98%.

[0046] 15 to 18, if the inner diameter of the cooling sleeve 20 in the free state is set to D and the outer diameter of the cable main 10 is set to D1, then D1≧D, and the cooling sleeve 20 and the cable main 10 are tightly fitted together, and are closely attached to each other. As shown in FIG. 15, the cable main 10 includes a wire core 11 and a wire insulating sheath 12, and the side wall of the cooling sleeve 20 is closely attached to the side wall of the wire insulating sheath 12.

[0047] To ensure that the radial force Fr≧2N is applied to the cable body 10 by the cooling sleeve 20 after installation so that the side wall of the cooling sleeve 20 and the outer wall of the cable body 10 are in close contact with each other, and based on the actual installation environment and the requirements of the allowable outer diameter of the high-voltage circuit, the range of the radial strain ΔD of the cooling sleeve 20 after assembly is 4mm to 8mm, within which ΔD=D1-D. Therefore, the elastic modulus of the cooling sleeve 20 within the linear elastic strain range is M≧Fr / ΔD, and within this range the side wall of the cooling sleeve 20 and the outer wall of the cable body 10 are in close contact with each other, ensuring efficient heat transfer and ensuring cooling efficiency.

[0048] As shown in Figures 5 and 9, the cooling sleeve 20 and the cable body 10 may be secured together by a securing tie 60, which prevents the cooling sleeve 20 from moving axially and more firmly secures the cooling sleeve 20 to the cable body 10. The securing tie 60 may be glued to the cooling sleeve 20. By matching the outer diameter of the cable body 10 to the inner diameter of the cooling sleeve 20, the cooling sleeve 20 can deform according to changes in the cable body, providing good adaptability. This cable structure allows for quick installation and simple, flexible mounting. The tight contact between the cooling sleeve 20 and the cable body 10 ensures good cooling of the cable body 10.

[0049] In one embodiment, a temperature sensor 72 is connected to the return joint 50, and the temperature sensor 72 provides a PTC or NTC signal to the cooling controller 71 to provide the cooling water temperature information to the cooling controller 71, and the cooling controller 71 can systematically adjust the power of the pump 84 and the heat exchange system based on the temperature sensor 72 to improve the cooling effect.

[0050] In one embodiment, the cooling rate of the cooling sleeve 20 ranges from 0.3 K / s to 10 K / s. To verify the effect of the cooling rate of the cooling sleeve 20 on the temperature rise of the cable body 10, the inventors used 10 cable structures with the same cross-sectional area, material, and length, passed the same current, and cooled the cable structures using cable bodies 10 with different cooling rates, and read out the temperature rise values ​​of each cable structure and recorded them in Table 3.

[0051] The experiment was conducted in a sealed environment, using the same current flowing through the cooling sleeve 20 cable structure with each cooling rate, recording the temperature before the current flow and the temperature after the current flow when the temperature stabilized, and obtaining the absolute value of the difference. In this example, a temperature rise of less than 50K was considered to be acceptable.

[0052] Table 3 shows the effect of each cooling rate on the temperature rise of the cable structure with the cooling sleeve 20.

[0053] [Table 3]

[0054] As can be seen from the above table, when the cooling rate of the cooling sleeve 20 is below 0.3 K / s, the temperature rise of the cable structure is smaller than the acceptable value, and the higher the cooling rate of the cooling sleeve 20, the smaller the temperature rise. When the cooling rate of the cooling sleeve 20 exceeds 10 K / s, due to the heat generation amount of the cable structure itself and the power of the cooling sleeve 20 itself, the temperature rise is not significantly reduced, but the power of the cooling sleeve 20 increases, making it uneconomical. Therefore, it is preferable to set the cooling rate range of the cooling sleeve 20 to 0.3 K / s to 10 K / s.

[0055] Example 2 The present invention provides a cable cooling device, which comprises a cooling sleeve 20 wound around the outside of a cable body 10, the cooling sleeve 20 being provided with a sleeve chamber 30, and the cooling sleeve 20 being connected to a water supply joint 40 and a return joint 50 which communicate with the sleeve chamber 30, such that cooling water flows through the water supply joint 40, enters the sleeve chamber 30 and flows out from the return joint 50.

[0056] The cable cooling device can reduce the temperature of the cable body 10 and is applicable to vehicles, where the cable body 10 can be a high-power cable for an electric vehicle.

[0057] The cable cooling device includes a pump 84 and a cooling system 80, which are connected to the water supply joint 40 and the return joint 50. The cooling system 80 lowers the temperature of the cooling water, and the pump 84 delivers the cooling water to the water supply joint 40 to lower the temperature of the cable body 10. When the cable cooling device is applied to a vehicle, it is connected to the heat exchange system of the entire vehicle, which functions as the pump 84 and the cooling system 80, and the pump 84 and the cooling system 80 may be provided separately.

[0058] 19, the cooling system 80 includes a cooling system 81 and a heat exchanger 82, and an expansion valve 83 is provided between the cooling system 81 and the heat exchanger 82. The cooling controller 71 is electrically connected to a pump 84.

[0059] Example 3 The present invention provides a vehicle, which includes a pump 84, a cooling system 80, and the above-mentioned cable structure, and the pump 84 and the cooling system 80 are connected to the water supply joint 40. The cooling system 80 reduces the temperature of the cooling water, and the pump 84 delivers the cooling water to the water supply joint 40 to reduce the temperature of the cable body 10. The functions and effects of the above-mentioned cable structure in the vehicle will not be described again.

[0060] The cable body 10 in the cable structure may be a high-power cable for an electric vehicle. The cable structure is connected to the heat exchange system of the entire vehicle, which serves as the pump 84 and the cooling system 80. The pump 84 and the cooling system 80 may be provided separately.

[0061] The above merely describes the best mode for carrying out the invention, and the scope of the present invention is not limited thereto. It should be understood that any equivalent changes and modifications that do not depart from the concept and principles of the present invention are within the scope of protection of the present invention. [Explanation of symbols]

[0062] 10 Cable body 11 Wire Core 12 Wire insulation sheath 21 Width direction 22 Thickness direction 30 Sleeve Chamber 31 First Chamber 32 Second Chamber 33 Sleeve chamber partition plate 34 Connecting Channels 40 Water supply joint 41 Water Supply Cache Chamber 50 Return joint 51 Return Cash Chamber 60 Fixed Tie 71 Cooling Controller 72 Temperature Sensor 80 Cooling System 81 Cooling system 82 Heat exchanger 83 Expansion valve 84 Pump

Claims

1. A cable structure comprising a cable body and a cooling sleeve wound around the outside of the cable body, a sleeve chamber is provided in the cooling sleeve, and a water supply joint and a return joint communicating with the sleeve chamber are connected to the cooling sleeve, and the cooling sleeve is configured so that cooling water flows through the water supply joint, enters the sleeve chamber, and flows out from the return joint; the sleeve chamber comprises a first chamber and a second chamber arranged in parallel, a first end of the cooling sleeve is provided with a communication channel, and the communication channel is respectively connected to the first chamber and the second chamber; The cable structure, wherein the water supply joint and the return joint are both provided at the second end of the cooling sleeve, and the water supply joint communicates with the first chamber, and the return joint communicates with the second chamber.

2. The cable structure of claim 1 , wherein the sleeve chamber has a flattened cross section.

3. The cable structure according to claim 1 or 2, wherein the ratio of the width direction size to the thickness direction size of the sleeve chamber is in the range of 1:1 to 10:

1.

4. The cable structure of claim 1 , wherein both the sidewall of the first chamber and the sidewall of the second chamber contact the cable body.

5. 2. The cable structure according to claim 1, wherein the cooling sleeve comprises a sleeve chamber partition plate disposed between the first chamber and the second chamber, and the communication channel is a through hole provided in the sleeve chamber partition plate.

6. The cable structure according to claim 1 or 2, wherein the water supply joint and the water return joint are provided at both ends of the cooling sleeve, respectively.

7. a water supply cache chamber is provided in the water supply joint, and the cross-sectional area of ​​the water supply cache chamber is larger than the cross-sectional area of ​​the sleeve chamber communicating with the water supply joint; And / or the return joint is provided with a return cache chamber, and the cross-sectional area of ​​the return cache chamber is larger than the cross-sectional area of ​​the sleeve chamber communicating with the return joint.

8. 3. The cable structure according to claim 1, wherein the water supply joint is fitted onto the cooling sleeve, and / or the return joint is fitted onto the cooling sleeve.

9. The cable structure according to claim 8 , wherein the water supply joint is fitted inside the cooling sleeve and / or the return joint is fitted inside the cooling sleeve.

10. The water supply joint and the cooling sleeve are interference-fitted, and an adhesive layer is provided between the water supply joint and the cooling sleeve; 10. The cable structure of claim 9, wherein the return joint and the cooling sleeve have an interference fit and an adhesive layer is provided between the return joint and the cooling sleeve.

11. The cable structure according to claim 1 or 2, wherein the cooling sleeve is spiral in a free state, and the cooling sleeve has elasticity.

12. The cable structure according to claim 11 , wherein the cooling sleeve has an inner diameter in a free state that is smaller than the outer diameter of the cable body.

13. The cable structure according to claim 11, wherein the cooling sleeve has a widthwise size that occupies a pitch in an assembled state in a range of 40% to 98%.

14. The cable structure of claim 1 , wherein a temperature sensor is connected to the return joint.

15. The cable structure according to claim 1, wherein the cooling rate of the cooling sleeve ranges from 0.3 K / s to 10 K / s.

16. A cable cooling device comprising a cooling sleeve wrapped around the outside of a cable body, a pump, and a cooling system, The cooling sleeve is provided with a sleeve chamber, and a water supply joint and a return joint communicating with the sleeve chamber are connected to the cooling sleeve, and the cooling sleeve is configured so that cooling water flows through the water supply joint, enters the sleeve chamber, and flows out from the return joint, and the pump and the cooling system are connected to the water supply joint and the return joint, the sleeve chamber comprises a first chamber and a second chamber arranged in parallel, a first end of the cooling sleeve is provided with a communication channel, and the communication channel is respectively connected to the first chamber and the second chamber; The cable cooling device, wherein the water supply joint and the return joint are both provided at the second end of the cooling sleeve, and the water supply joint communicates with the first chamber, and the return joint communicates with the second chamber.

17. A vehicle comprising a pump, a cooling system, and the cable structure according to claim 1 or 2, wherein the pump and the cooling system are connected to a water supply joint and a return joint.

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