Flat liquid-cooled cable

Abstract

The invention relates to the field of new energy charging cables, and discloses a flat liquid-cooled cable, which comprises an outer sheath with a long circular cross section, two liquid-cooled cables are arranged in the outer sheath side by side, each liquid-cooled cable comprises a cooling pipe, a main wire core is arranged in the cooling pipe in a penetrating manner, a cooling channel is formed between the main wire core and the cooling pipe, and the main wire core and the cooling pipe are communicated through the cooling channel. An integrated control wire core twisted on the main wire core is arranged in the cooling channel, a liquid inlet three-way pipe is communicated between the head ends of the two liquid-cooled cables, a liquid discharge three-way pipe is communicated between the tail ends of the two liquid-cooled cables, and the liquid inlet three-way pipe and the liquid discharge three-way pipe are both communicated with the cooling channel; and a cooling medium enters the paired wire core from the cooling channels at the head ends of the two liquid-cooled cables through the liquid inlet three-way pipe, and the integrated control wire core is discharged from the liquid discharge three-way pipes at the tail ends of the two liquid-cooled cables after being cooled. The problems that an existing charging cable is limited in overall flexibility and large in bending radius can be solved.

Description

Technical Field

[0001] The present invention relates to the field of new energy charging cables, and in particular to a flat liquid-cooled cable. Background Art

[0002] With the increasing global awareness of environmental protection and the transformation of energy structure, the new energy vehicle industry has ushered in unprecedented development opportunities. As a key component for energy replenishment of new energy vehicles, charging cables play a vital role in ensuring efficient and safe charging of vehicles. It is not only directly related to charging efficiency and user experience, but also has a profound impact on the popularity of new energy vehicles and the construction of charging infrastructure.

[0003] With the continuous advancement of battery technology and the widespread application of fast charging technology, new energy vehicles have put forward higher requirements for the performance of charging cables. Especially in the context of pursuing higher charging power, the current that the charging cable needs to carry has increased significantly, which directly leads to the aggravation of the conductor heating problem. High temperature will not only reduce the conductive efficiency of the cable and accelerate the aging of the material, but also may cause safety hazards. Therefore, the heat dissipation performance of the charging cable has become one of the key indicators to measure its quality. Effective heat dissipation design can ensure that the cable maintains a low temperature when running at high load, prolonging its service life, while ensuring the safety and stability of the charging process.

[0004] However, the mainstream charging cables on the market currently mostly adopt a circular structure design. Although this design meets the basic electrical transmission needs to a certain extent, it has many limitations. First, due to the large amount of conductors and insulating materials used in circular cables, the production cost is relatively high, which is not conducive to large-scale promotion and application. Secondly, the circular cross-section limits the overall flexibility of the cable and the bending radius is large, which not only increases the difficulty of installation and use, but also brings inconvenience to the user's daily storage. Especially in charging stations or home garages with limited space, the flexibility and easy storage of cables are particularly important.

[0005] Therefore, developing a new charging cable that can meet the needs of high-current fast charging, has good heat dissipation performance, and takes into account cost-effectiveness, flexibility, and easy storage has become a technical problem that needs to be solved in the current new energy vehicle charging field. By innovating cable structure design, optimizing the selection of conductors and insulation materials, and exploring efficient heat dissipation mechanisms, it is expected to break the bottleneck of existing technologies and promote the further development of new energy vehicle charging technology. Summary of the invention

[0006] The present invention is intended to provide a flat liquid-cooled cable to improve the problems of limited overall flexibility and large bending radius of existing charging cables.

[0007] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a flat liquid-cooled cable, comprising an outer sheath with an oblong cross-section, two liquid-cooled cables are arranged side by side in the outer sheath, each liquid-cooled cable comprises a cooling tube, a main core is passed through the cooling tube, a cooling channel is formed between the main core and the cooling tube, an integrated control core twisted on the main core is arranged in the cooling channel, a liquid inlet tee is connected between the head ends of the two liquid-cooled cables, a liquid discharge tee is connected between the tail ends of the two liquid-cooled cables, the liquid inlet tee and the liquid discharge tee are both connected to the cooling channel, the cooling medium enters the cooling channel at the head ends of the two liquid-cooled cables through the liquid inlet tee, cools the main core and the integrated control core, and is discharged from the liquid discharge tee at the tail ends of the two liquid-cooled cables.

[0008] Preferably, as an improvement, two liquid-cooled cables are placed side by side in the outer sheath, and an upper and lower angle space is formed between the two liquid-cooled cables in the outer sheath. In this way, the internal structure of the product is more compact, and the cooling effects of the two liquid-cooled cables can affect each other, resulting in a better cooling effect.

[0009] Preferably, as an improvement, the drain tee is connected to a drain pipe, and the drain pipe is located in the angle space formed between the two liquid cooling cables in the outer sheath. In this way, the angle space between the two liquid cooling cables is fully utilized as the layout space of the drain pipe, making the internal structure of the product more compact, ensuring that the flat structure of the product is stable and has good softness.

[0010] Preferably, as an improvement, the liquid inlet tee and the liquid discharge tee are respectively located in the upper and lower angle spaces formed between the two liquid cooling cables in the outer sheath, so as to make full use of the angle space between the two liquid cooling cables and effectively avoid mutual interference between liquid inlet and liquid discharge.

[0011] Preferably, as an improvement, the integrated control core includes an insulating sheath, and the inner side of the insulating sheath is provided with auxiliary cores, signal cores and control cores that are evenly grouped. In this way, the three functional cores are integrated into an integrated control core, which is more stable in the cooling channel, more conducive to the rapid flow of the cooling medium in the cooling channel, and more conducive to ensuring the cooling effect.

[0012] Preferably, as an improvement, the cooling pipe is formed by vertically extruding nylon material outside the main line core and the integrated control line core. In this way, the cooling pipe has better integrity and sealing, better limiting effect on the main line core and the integrated control line core, and is more conducive to ensuring the rapid flow of the cooling medium while cooling the main line core and the integrated control line core, which is more conducive to ensuring the cooling effect.

[0013] Preferably, as an improvement, a sealing member is provided at the connection between the liquid inlet tee pipe, the liquid discharge tee pipe and the cooling pipe. The sealing member can ensure the sealing performance of the connection to avoid leakage of the cooling medium.

[0014] Preferably, as an improvement, the outer sheath is extruded outside the cooling tubes of the two liquid-cooled wires. In this way, the outer sheath is in direct contact with the cooling tubes, no filling material is needed, the flat shape of the product is ensured, and material cost is saved.

[0015] Preferably, as an improvement, the flow rate of the cooling medium in the cooling channel is greater than or equal to 15L / min. The solution of this product has a larger flow rate of the cooling medium and has a better cooling effect.

[0016] The principle of this solution is: in actual application, this product is applied to new energy charging piles. The charging cable of traditional new energy charging piles adopts a one-to-one cooling pipeline. The coolant of a single main core is circulated through two pipelines, namely, the inlet and outlet pipelines. In this solution, the integrated control core is twisted outside the main core, and then the two are placed in the cooling pipe as a whole. The two liquid-cooled cables are connected at the head and tail ends through a three-way structure, so that the cooling medium flows back to the charging pile through a single pipeline. The cooling medium of the two liquid-cooled cables is water, which is uniformly discharged through the outlet pipe. In this way, the overall contact area between the cooling medium and each group of cores in the cooling channel is significantly increased, and the circulation of the cooling medium is accelerated. The double-tube circulation can take away more heat at the same time. In addition, by adopting a flat structure, the upper and lower widths are reduced, which improves the softness of the product in the upper and lower directions, making it have a smaller bending radius, which is convenient for use and storage. Under the premise of ensuring structural strength, the anti-bending performance is greatly improved, and the service life is extended.

[0017] Advantages of the present invention include:

[0018] 1. The flat structure is adopted to reduce the width of the product in the vertical direction, improve the convenience of bending, and enable the cable to be bent with a smaller radius, which is convenient for use and storage.

[0019] 2. The flat structure reduces the overall cross-sectional area of ​​the cable by one third under the same conditions, making the outer diameter more economical, saving 5% of copper and one third of sheath material. It can save one twisting process in the production process, saving time and material costs while ensuring structural strength and service life.

[0020] 3. The main line core and integrated control line core are located in the cooling tube, so the contact area between the cooling medium and each group of line cores is larger, and the cooling effect is better.

[0021] 4. Through the one-way liquid inlet of double pipes, the circulation flow of the cooling medium is increased in the same time, which can take away more heat and have a more significant cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a cross-sectional view of an embodiment of the present invention.

[0023] Figure 2 Schematic diagram of cooling medium circulation according to an embodiment of the present invention. DETAILED DESCRIPTION

[0024] The following is further described in detail through specific implementation methods:

[0025] The reference numerals in the drawings of the specification include: outer sheath 1, cooling pipe 2, main line core 3, cooling channel 4, drainage tee pipe 5, integrated control line core 6, liquid inlet tee pipe 7, and drainage pipe 8.

[0026] The embodiment is basically as shown in the attached Figure 1 , Figure 2 As shown: A flat liquid-cooled cable, including an outer sheath 1 with an oblong cross-section, two liquid-cooled cables are arranged side by side in the outer sheath 1, the two liquid-cooled cables are arranged side by side in the outer sheath 1, and an upper and lower angle space is formed between the two liquid-cooled cables in the outer sheath 1. Each liquid-cooled cable includes a cooling tube 2, and the outer sheath 1 is extruded outside the cooling tube 2 of the two liquid-cooled wires. A main core 3 is passed through the cooling tube 2, and the main core 3 includes a conductor and an insulating layer. A cooling channel 4 is formed between the main core 3 and the cooling tube 2. An integrated control core 6 twisted on the main core 3 is arranged in the cooling channel 4. The integrated control core 6 includes an insulating sheath, and auxiliary cores, signal cores and control cores are evenly grouped on the inner side of the insulating sheath. The cooling tube 2 is formed by vertical extrusion of nylon material outside the main core 3 and the integrated control core 6. The head ends of the two liquid-cooled cables are connected with a liquid inlet tee 7, and the tail ends of the two liquid-cooled cables are connected with a liquid discharge tee 5. The liquid inlet tee 7 and the liquid discharge tee 5 are respectively located in the upper and lower angle spaces formed between the two liquid-cooled cables in the outer sheath 1. The liquid discharge tee 5 is connected with a liquid discharge pipe 8, and the liquid discharge pipe 8 is located in the angle space formed between the two liquid-cooled cables in the outer sheath 1. The liquid inlet tee 7 and the liquid discharge tee 5 are both connected with the cooling channel 4, and a sealing rubber ring is provided at the connection between the liquid inlet tee 7, the liquid discharge tee 5 and the cooling pipe 2 as a sealing member. The cooling medium enters the cooling channel 4 at the head ends of the two liquid-cooled cables through the liquid inlet tee 7 to cool the main core 3 and the integrated control core 6, and then is discharged from the liquid discharge tee 5 at the tail ends of the two liquid-cooled cables.

[0027] The flow rate of the cooling medium in the cooling channel 4 is greater than or equal to 15 L / min.

[0028] The specific implementation process is as follows: In actual application, this product is applied to new energy charging piles, and the integrated control core 6 is twisted outside the main core 3, and then the two are placed in the cooling tube 2 as a whole. The two liquid-cooled cables are connected at the head end and the tail end through a three-way structure. The three-way structure makes the connection points fewer, and each connection point is easier to ensure the connection quality, and the risk of leakage is lower. In this way, the cooling medium of the two liquid-cooled cables is water, and the cooling medium of the two liquid-cooled cables is uniformly discharged through the drain pipe 8, so that the cooling medium flows back to the charging pile through a single pipeline. In this way, the overall contact area of ​​the cooling medium with each group of cores in the cooling channel 4 is significantly increased, and the circulation of the cooling medium is accelerated at the same time. The cooling medium can take away more heat at the same time when the double-tube circulation is in progress. In addition, by adopting a flat structure, the upper and lower widths are reduced, which improves the softness of the product in the upper and lower directions, so that it has a smaller bending radius, which is convenient for use and storage. Under the premise of ensuring structural strength, the anti-bending performance is greatly improved, and the service life is extended.

[0029] Thus, the flat liquid-cooled cable product provided by the technical solution of the present invention has the advantages of good cooling effect, high softness, easy use and storage, and long service life under the same structural strength compared with the prior art products.

[0030] The above are only embodiments of the present invention, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution are not described in detail here. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the technical solution of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A flat liquid-cooled cable, characterized in that: It comprises an outer sheath with an oblong cross-section, two liquid-cooling cables are arranged side by side in the outer sheath, each liquid-cooling cable comprises a cooling tube, a main core is passed through the cooling tube, a cooling channel is formed between the main core and the cooling tube, an integrated control core twisted on the main core is arranged in the cooling channel, a liquid inlet tee is connected between the head ends of the two liquid-cooling cables, a liquid discharge tee is connected between the tail ends of the two liquid-cooling cables, the liquid inlet tee and the liquid discharge tee are both connected to the cooling channel, the cooling medium enters from the cooling channel at the head ends of the two liquid-cooling cables through the liquid inlet tee, cools the main core and the integrated control core, and is then discharged from the liquid discharge tee at the tail ends of the two liquid-cooling cables.

2. A flat liquid-cooled cable according to claim 1, characterized in that: The two liquid-cooling cables are arranged side by side and abut against each other in the outer sheath, and upper and lower angle spaces are formed between the two liquid-cooling cables in the outer sheath.

3. A flat liquid-cooled cable according to claim 2, characterized in that: The drain tee is connected with a drain pipe, and the drain pipe is located in an angle space formed between two liquid cooling cables in the outer sheath.

4. A flat liquid-cooled cable according to claim 3, characterized in that: The liquid inlet tee pipe and the liquid discharge tee pipe are respectively located in the upper and lower angle spaces formed between the two liquid cooling cables in the outer sheath.

5. A flat liquid-cooled cable according to claim 4, characterized in that: The integrated control core comprises an insulating sheath, inside of which auxiliary cores, signal cores and control cores which are evenly grouped are arranged.

6. A flat liquid-cooled cable according to claim 5, characterized in that: The cooling pipe is made of nylon material and is vertically extruded outside the main line core and the integrated control line core.

7. A flat liquid-cooled cable according to claim 6, characterized in that: Sealing elements are provided at the connection points between the liquid inlet tee pipe, the liquid discharge tee pipe and the cooling pipe.

8. A flat liquid-cooled cable according to claim 1, characterized in that: The outer sheath is extruded outside the cooling tubes of the two liquid-cooled wires.

9. A flat liquid-cooled cable according to claim 1, characterized in that: The flow rate of the cooling medium in the cooling channel is greater than or equal to 15L / min.

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