Low-temperature-resistant liquid-cooled charging pile cable
By using a combination of liquid-cooled inner tube and arc-shaped cooling tube in the charging pile cable, the cooling of the wire assembly is achieved, and the flame-retardant and fire-retardant performance of the cable is improved through the flame-retardant belt layer and the ceramicized silicone rubber layer, which solves the problem of temperature rise during cable hardening and charging in low-temperature environments, and improves the safety and convenience of the cable.
Patent Information
- Application Number
- CN202422126090.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-08-30
AI Technical Summary
The existing charging pile cables are hardened and difficult to bend in low-temperature environments, which brings inconvenience to users. At the same time, the cable temperature rises higher during charging, which poses safety hazards.
The low-temperature resistant liquid-cooled charging pile cable design is adopted. Through the combination of the liquid-cooled inner tube and the arc-shaped cooling tube, the cooling water circulates between the liquid-cooled capsule bag and the return tube to achieve cooling of the wire assembly, and improve the flame-retardant and fire-retardant performance of the cable through the flame-retardant wrapping layer and the ceramicized silicone rubber layer.
Maintain the flexibility of the cable in a low-temperature environment, reduce the temperature rise of the cable during charging, and improve the safety and flame retardant and fire-resistant performance of the cable.
Smart Images
Figure CN223051911U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cables, in particular to a low-temperature resistant liquid-cooled charging pile cable. Background Art
[0002] With the continuous increase of new energy vehicles, the charging piles, as necessary facilities, are also gradually increasing. At the same time, the development of charging piles has further promoted the development of cable enterprises. With the continuous increase of new energy vehicles, as the energy replenishment infrastructure for new energy vehicles, the charging pile industry has thus entered the fast lane.
[0003] In a low-temperature environment below -30°C, ordinary cables will become very hard and difficult to bend, which brings inconvenience to users for charging. In addition, the existing charging pile cables will cause a relatively high temperature rise during the charging process, posing a safety hazard. Content of the Utility Model
[0004] Aiming at the above problems, the purpose of the present utility model is to provide a low-temperature resistant liquid-cooled charging pile cable to solve the problems that the cable becomes very hard and difficult to bend in a low-temperature environment, bringing inconvenience to users for charging, and that the existing charging pile cables will cause a relatively high temperature rise during the charging process, posing a safety hazard. The cooling water flowing into the liquid-cooled inner tube flows back into the liquid-cooled sac through the return pipe. Furthermore, during this process, the cooling water flows through the arc-shaped cooling pipe twice, thereby realizing the cooling of the wire assembly.
[0005] To achieve the above purpose, the technical solution adopted by the present utility model is: a low-temperature resistant liquid-cooled charging pile cable, including a wire assembly, a liquid-cooling assembly, and a cable assembly. The wire assembly includes an insulating inner layer, the liquid-cooling assembly includes a liquid-cooling sleeve, and the cable assembly includes a sheath layer. A conductor core is arranged inside the insulating inner layer. A flame-retardant wrapping layer is connected to the outer wall of the circumferential surface of the insulating inner layer. A flame-retardant cooling layer is arranged inside the flame-retardant wrapping layer. A support ring is arranged inside the liquid-cooling sleeve. A liquid-cooled inner tube is arranged inside the liquid-cooling sleeve. One end of the liquid-cooled inner tube is connected to a return pipe. The end of the return pipe far from the liquid-cooled inner tube is connected to an arc-shaped cooling pipe. The end of the arc-shaped cooling pipe far from the return pipe is connected to a communicating pipe. The end of the communicating pipe far from the arc-shaped cooling pipe is connected to a liquid-cooled sac. A shielding outer layer is connected to the outer wall of the sheath layer. A moisture-proof layer is connected to the end of the shielding outer layer far from the sheath layer. A buffer outer layer is connected to the end of the moisture-proof layer far from the shielding outer layer.
[0006] The beneficial effects of the present utility model are as follows: When the cable assembly is bent, the cooling water inside the liquid cooling bladder at the bent portion flows along the connecting pipe through the arc-shaped cooling pipe to the return pipe, and then the cooling water inside the return pipe is squeezed into the inside of the liquid cooling inner pipe at the central position. After the bending action is completed, the cooling water flowing into the liquid cooling inner pipe flows back into the liquid cooling bladder through the return pipe. During this process, the cooling water flows through the arc-shaped cooling pipe twice, thereby realizing the cooling and temperature reduction of the wire assembly. Through the heat resistance, wear resistance, and excellent mechanical properties of the insulating inner layer, the inner layer protection of the conductor core is formed. Through the setting of the flame-retardant tape layer, a hard shell will be formed after its combustion, and the formed hard shell will not melt or drip, thereby being able to delay the time for the flame to reach the conductor core and improving the flame-retardant and fire-proof performance of the cable.
[0007] In order to improve the flame-retardant and fire-proof performance of the cable:
[0008] As a further improvement of the above technical solution: The insulating inner layer is a foamed polypropylene layer and wraps the outer wall of the same group of conductor cores. The conductor cores of the same group are made by twisting each other. A filling hole for loading the conductor cores is reserved radially inside the insulating inner layer. The flame-retardant tape layer is a ceramicized silicone rubber layer.
[0009] The beneficial effects of this improvement are as follows: Through the heat resistance, wear resistance, and excellent mechanical properties of the insulating inner layer, the inner layer protection of the conductor core is formed. Through the setting of the flame-retardant tape layer, a hard shell will be formed after its combustion, and the formed hard shell will not melt or drip, thereby being able to delay the time for the flame to reach the conductor core and improving the flame-retardant and fire-proof performance of the cable.
[0010] In order to be used to reduce the temperature rise of the cable during charging:
[0011] As a further improvement of the above technical solution: Flame-retardant cooling pipes are symmetrically connected to both ends of the flame-retardant tape layer. Both ends of the flame-retardant cooling pipe are simultaneously connected to the flame-retardant cooling layer inside the adjacent flame-retardant tape layer. The flame-retardant cooling layer is filled with cooling water.
[0012] The beneficial effects of this improvement are as follows: Through the setting of the flame-retardant cooling pipe, when the cable is in use and moving, the cooling water inside the flame-retardant cooling layer inside the adjacent flame-retardant tape layer flows, thereby being used to reduce the temperature rise of the cable during charging.
[0013] In order to ensure the stability of the connection between the liquid cooling inner pipe and the return pipe:
[0014] As a further improvement of the above technical solution: A stabilizing rod is connected to the outer wall of the liquid cooling inner pipe. There are two layers of support rings in total and they are arranged in a concentric circle structure. One end of the stabilizing rod away from the liquid cooling inner pipe sequentially penetrates through the two layers of support rings and extends to be connected to the inner wall of the liquid cooling sleeve.
[0015] The beneficial effects of this improvement are as follows: Through the setting of the stabilizing rod, it is used to connect the liquid cooling sleeve and the liquid cooling inner pipe. Through the setting of the support ring, it is used to ensure the stability of the connection between the liquid cooling inner pipe and the return pipe.
[0016] In order to cool down the wire assembly:
[0017] As a further improvement of the above technical solution: The top view cross-section of the liquid cooling bladder is set as an oval structure. The liquid cooling bladder is arranged inside the shielding outer layer, and the liquid cooling bladder is connected to the arc-shaped cooling pipe through a connecting pipe.
[0018] The beneficial effects of this improvement are as follows: When the cable assembly is bent, the cooling water inside the liquid cooling bladder at the bent part flows along the connecting pipe through the arc-shaped cooling pipe to the return pipe, and then the cooling water inside the return pipe is squeezed into the inside of the liquid cooling inner pipe at the central position. Then, after the bending action is completed, the cooling water flowing into the liquid cooling inner pipe flows back to the liquid cooling bladder through the return pipe. Furthermore, during this process, the cooling water flows through the arc-shaped cooling pipe twice, thereby realizing the cooling and temperature reduction of the wire assembly.
[0019] In order to improve the structural strength of the cable assembly during use:
[0020] As a further improvement of the above technical solution: The shielding outer layer is a corrugated aluminum sheath layer, and a wrapped steel strip is arranged inside the shielding outer layer.
[0021] The beneficial effects of this improvement are as follows: By arranging a wrapped steel strip inside the shielding outer layer, the tensile resistance of the shielding outer layer can be improved, thereby improving the structural strength of the cable assembly during use. Through the shielding effect and firmness of the shielding outer layer, when the cable is transmitting signals, it is not affected by the outside world, and at the same time, it has high tensile strength and bending performance.
[0022] In order to ensure the safety of the cable when used in a low-temperature environment:
[0023] As a further improvement of the above technical solution: The moisture-proof layer is an ethylene propylene diene monomer rubber layer.
[0024] The beneficial effects of this improvement are as follows: Through the resistance of the moisture-proof layer to polar solutions and chemicals, low water absorption rate and good insulation characteristics, it is used for moisture-proof protection of the wire assembly, reducing the impact of low temperature and humidity in the cable use environment on it, thereby ensuring the safety of the cable when used in a low-temperature environment.
[0025] In order to form anti-impact protection for the outer layer of the wire assembly:
[0026] As a further improvement of the above technical solution: The buffer outer layer is a ceramicized silicone rubber layer.
[0027] The beneficial effects of this improvement are as follows: Through the setting of the buffer outer layer, when the cable is bent, it can provide anti-bending protection for the wire assembly. At the same time, due to the fireproof, fire-resistant, flame-retardant, low-smoke, and non-toxic properties of the buffer outer layer, it forms anti-impact protection for the outer layer of the wire assembly. Description of the Drawings
[0028] Figure 1 It is a schematic main sectional structure view of the present utility model.
[0029] Figure 2 It is a schematic structure view of the wire assembly of the present utility model.
[0030] Figure 3 It is a schematic structure view of the liquid-cooled inner tube of the present utility model.
[0031] Figure 4 It is a schematic sectional structure view of the liquid-cooled sleeve of the present utility model.
[0032] Figure 5 It is a schematic structure view of the liquid-cooled sac of the present utility model.
[0033] In the figure: 1. Wire assembly; 11. Insulating inner layer; 12. Conductor core; 13. Flame-retardant tape layer; 14. Flame-retardant cooling layer; 15. Flame-retardant cooling tube; 2. Liquid-cooling assembly; 21. Liquid-cooled sleeve; 22. Support ring; 23. Liquid-cooled inner tube; 24. Stabilizing rod; 25. Liquid-cooled sac; 26. Arc-shaped cooling tube; 27. Connecting tube; 28. Return tube; 3. Cable assembly; 31. Sheath layer; 32. Shielding outer layer; 33. Moisture-proof layer; 34. Buffer outer layer. Detailed Embodiment
[0034] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be described in detail below with reference to the drawings. The description of this part is only exemplary and explanatory, and should not have any restrictive effect on the protection scope of the present utility model.
[0035] As Figures 1-5As shown in the figure, a low-temperature-resistant liquid-cooled charging pile cable includes a wire assembly 1, a liquid-cooled assembly 2, and a cable assembly 3. The wire assembly 1 includes an insulating inner layer 11. The liquid-cooled assembly 2 includes a liquid-cooled sleeve 21. The cable assembly 3 includes a sheath layer 31. A conductor core 12 is arranged inside the insulating inner layer 11. A flame-retardant tape layer 13 is connected to the outer wall of the circumferential surface of the insulating inner layer 11. A flame-retardant cooling layer 14 is arranged inside the flame-retardant tape layer 13. A support ring 22 is arranged inside the liquid-cooled sleeve 21. A liquid-cooled inner tube 23 is arranged inside the liquid-cooled sleeve 21. One end of the liquid-cooled inner tube 23 is connected to a return pipe 28. The end of the return pipe 28 away from the liquid-cooled inner tube 23 is connected to an arc-shaped cooling pipe 26. The end of the arc-shaped cooling pipe 26 away from the return pipe 28 is connected to a connecting pipe 27. The end of the connecting pipe 27 away from the arc-shaped cooling pipe 26 is connected to a liquid-cooled bladder 25. A shielding outer layer 32 is connected to the outer wall of the sheath layer 31. One end of the shielding outer layer 32 away from the sheath layer 31 is connected to a moisture-proof layer 33. One end of the moisture-proof layer 33 away from the shielding outer layer 32 is connected to a buffer outer layer 34. The insulating inner layer 11 is a foamed polypropylene layer and wraps the outer wall of the same group of conductor cores 12. The same group of conductor cores 12 are made by twisting each other. A filling hole for loading the conductor cores 12 is reserved radially inside the insulating inner layer 11. The flame-retardant tape layer 13 is a ceramicized silicone rubber layer; due to the heat resistance, wear resistance, and excellent mechanical properties of the insulating inner layer 11, an inner layer protection for the conductor core 12 is formed. Through the setting of the flame-retardant tape layer 13, a hard shell will be formed after it burns, and the formed hard shell will not melt or drip, thereby being able to delay the time for the flame to reach the conductor core 12 and improving the flame-retardant and fire-proof performance of the cable. The two ends of the flame-retardant tape layer 13 are symmetrically connected with flame-retardant cooling pipes 15. The two ends of the flame-retardant cooling pipes 15 are simultaneously connected to the flame-retardant cooling layer 14 inside the adjacent flame-retardant tape layer 13. The flame-retardant cooling layer 14 is filled with cooling water; through the setting of the flame-retardant cooling pipes 15, when the cable is moving during use, the cooling water inside the flame-retardant cooling layer 14 inside the adjacent flame-retardant tape layer 13 flows, thereby being used to reduce the temperature rise of the cable during charging. A stabilizing rod 24 is connected to the outer wall of the liquid-cooled inner tube 23. The support ring 22 is provided with two layers and is arranged in a concentric circle structure. The end of the stabilizing rod 24 away from the liquid-cooled inner tube 23 sequentially passes through the two layers of support rings 22 and extends to be connected to the inner wall of the liquid-cooled sleeve 21; through the setting of the stabilizing rod 24, it is used to connect the liquid-cooled sleeve 21 and the liquid-cooled inner tube 23. Through the setting of the support ring 22, it is used to ensure the stability of the connection between the liquid-cooled inner tube 23 and the return pipe 28. The top view cross-section of the liquid-cooled bladder 25 is arranged in an oval structure. The liquid-cooled bladder 25 is arranged inside the shielding outer layer 32. The liquid-cooled bladder 25 is communicated with the arc-shaped cooling pipe 26 through the connecting pipe 27;When the cable assembly 3 is bent, the cooling water inside the liquid cooling bladder 25 at the bent part flows along the connecting pipe 27 through the arc-shaped cooling pipe 26 to the return pipe 28, and then the cooling water inside the return pipe 28 is squeezed into the inside of the liquid cooling inner pipe 23 at the central position. After the bending action is completed, the cooling water flowing into the liquid cooling inner pipe 23 flows back into the liquid cooling bladder 25 through the return pipe 28. During this process, the cooling water flows through the arc-shaped cooling pipe 26 twice, thereby realizing the cooling and temperature reduction of the wire assembly 1. The shielding outer layer 32 is a corrugated aluminum sheath layer, and a wrapped steel strip is arranged inside the shielding outer layer 32; by arranging a wrapped steel strip inside the shielding outer layer 32, the tensile resistance performance of the shielding outer layer 32 can be improved, thereby improving the structural strength during the use of the cable assembly 3. Due to the shielding effect and firmness of the shielding outer layer 32, when the cable is in the signal transmission process, it is not affected by external interference, and has high tensile strength and bending performance. The moisture-proof layer 33 is an ethylene propylene diene monomer (EPDM) rubber layer; due to the resistance of the moisture-proof layer 33 to polar solutions and chemicals, low water absorption rate and good insulation characteristics, it is used for the moisture-proof protection of the wire assembly 1, reducing the influence caused by the low temperature and humidity of the cable use environment, thereby ensuring the safety of the cable when used in a low temperature environment. The buffer outer layer 34 is a ceramized silicone rubber layer; through the setting of the buffer outer layer 34, when the cable is bent, it can provide anti-bending protection for the wire assembly 1. At the same time, due to the fire-proof, fire-resistant, flame-retardant, low-smoke and non-toxic properties of the buffer outer layer 34, it forms anti-impact protection for the outer layer of the wire assembly 1.;
[0036] The working principle of the present utility model is as follows: When the cable assembly 3 is bent, the cooling water inside the liquid-cooling sac 25 at the bent part flows along the connecting pipe 27 through the arc-shaped cooling pipe 26 to the return pipe 28, and then the cooling water inside the return pipe 28 is squeezed into the inside of the liquid-cooling inner pipe 23 at the central position. After the bending action is completed, the cooling water flowing into the liquid-cooling inner pipe 23 flows back into the liquid-cooling sac 25 through the return pipe 28. During this process, the cooling water flows through the arc-shaped cooling pipe 26 twice, thereby realizing the cooling of the wire assembly 1. By arranging a wrapped steel strip inside the shielding outer layer 32, the tensile resistance of the shielding outer layer 32 can be improved, and thus the structural strength during the use of the cable assembly 3 is enhanced. Due to the shielding effect and firmness of the shielding outer layer 32, the cable has high tensile strength and bending performance while being protected from external interference during signal transmission. Due to the resistance of the moisture-proof layer 33 to polar solutions and chemicals, low water absorption rate and good insulation properties, it is used for moisture-proof protection of the wire assembly 1, reducing the influence of low temperature and humidity in the cable usage environment, and thus ensuring the safety of the cable when used in a low-temperature environment. Through the setting of the buffer outer layer 34, when the cable is bent, it can provide anti-bending protection for the wire assembly 1. At the same time, due to the fireproof, fire-resistant, flame-retardant, low-smoke and non-toxic properties of the buffer outer layer 34, it forms anti-impact protection for the outer layer of the wire assembly 1. Through the setting of the stabilizing rod 24, it is used to connect the liquid-cooling sleeve 21 and the liquid-cooling inner pipe 23. Through the setting of the support ring 22, it is used to ensure the stability of the connection between the liquid-cooling inner pipe 23 and the return pipe 28. Through the setting of the flame-retardant cooling pipe 15, when the cable is in use and moving, the cooling water inside the flame-retardant cooling layer 14 on the inner side of the adjacent flame-retardant tape layer 13 flows, thereby reducing the temperature rise of the cable during charging. Through the heat resistance, wear resistance and excellent mechanical properties of the insulating inner layer 11, it forms inner layer protection for the conductor core 12. Through the setting of the flame-retardant tape layer 13, after it burns, it will form a hard shell, and the formed hard shell does not melt or drip, thereby being able to delay the time for the flame to reach the conductor core 12 and improving the flame-retardant and fireproof performance of the cable.
[0037] It should be noted that in this text, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0038] In this article, specific examples are used to elaborate on the principle and implementation mode of the present utility model. The description of the above examples is only used to help understand the method and its core idea of the present utility model. The above is only the preferred implementation mode of the present utility model. It should be noted that due to the limitation of literal expression, objectively there are infinite specific structures. For those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements, retouches or changes can also be made, or the above technical features can be combined in an appropriate manner; these improvements, retouches, changes or combinations, or directly applying the concept and technical solution of the utility model to other occasions without improvement, shall all be regarded as the protection scope of the present utility model.
Claims
1. A low-temperature resistant liquid-cooled charging pile cable, comprising a conductor assembly (1), a liquid-cooling assembly (2), and a cable assembly (3), wherein the conductor assembly (1) comprises an insulating inner layer (11), the liquid-cooling assembly (2) comprises a liquid-cooling sleeve (21), and the cable assembly (3) comprises a sheath layer (31), characterized in that: A conductor core (12) is arranged on the inner side of the insulating inner layer (11), a flame-retardant tape layer (13) is connected to the outer wall of the peripheral surface of the insulating inner layer (11), a flame-retardant cooling layer (14) is arranged on the inner side of the flame-retardant tape layer (13), a support ring (22) is arranged on the inner ring of the liquid cooling sleeve (21), a liquid cooling inner tube (23) is arranged on the inner ring of the liquid cooling sleeve (21), one end of the liquid cooling inner tube (23) is connected to a return pipe (28), and the return pipe (28) is away from one end of the liquid cooling inner tube (23). The end of the jacket layer (31) is connected to an arc-shaped cooling pipe (26), the end of the arc-shaped cooling pipe (26) away from the return pipe (28) is connected to a connecting pipe (27), the end of the connecting pipe (27) away from the arc-shaped cooling pipe (26) is connected to a liquid cooling bag (25), the outer wall of the jacket layer (31) is connected to a shielding outer layer (32), the end of the shielding outer layer (32) away from the jacket layer (31) is connected to a moisture-proof layer (33), and the end of the moisture-proof layer (33) away from the shielding outer layer (32) is connected to a buffer outer layer (34).
2. A low temperature resistant liquid-cooled charging pile cable according to claim 1, characterized in that: The insulating inner layer (11) is a foamed polypropylene layer and is wrapped around the outer wall of the same group of conductor cores (12). The conductor cores (12) of the same group are twisted together. A filling hole for filling the conductor cores (12) is reserved radially inside the insulating inner layer (11). The flame-retardant wrapping layer (13) is a ceramic silicone rubber layer.
3. A low temperature resistant liquid-cooled charging pile cable according to claim 1, characterized in that: The two ends of the flame-retardant wrapping layer (13) are symmetrically connected to flame-retardant cooling pipes (15), and the two ends of the flame-retardant cooling pipes (15) are simultaneously connected to the flame-retardant cooling layer (14) on the inner side of the adjacent flame-retardant wrapping layer (13), and the flame-retardant cooling layer (14) is filled with cooling water.
4. A low temperature resistant liquid-cooled charging pile cable according to claim 1, characterized in that: The outer wall of the liquid-cooled inner tube (23) is connected to a stabilizing rod (24); the support ring (22) is provided with two layers in a concentric circle structure; one end of the stabilizing rod (24) away from the liquid-cooled inner tube (23) passes through the two layers of support rings (22) in sequence and extends to be connected to the inner wall of the liquid-cooled sleeve (21).
5. A low temperature resistant liquid-cooled charging pile cable according to claim 1, characterized in that: The cross-section of the liquid cooling bag (25) when viewed from above is an elliptical structure. The liquid cooling bag (25) is arranged on the inner side of the shielding outer layer (32). The liquid cooling bag (25) is connected to the arc-shaped cooling pipe (26) through a connecting pipe (27).
6. A low temperature resistant liquid-cooled charging pile cable according to claim 1, characterized in that: The shielding outer layer (32) is a corrugated aluminum sheath layer, and a wrapped steel belt is arranged inside the shielding outer layer (32).
7. A low temperature resistant liquid-cooled charging pile cable according to claim 1, characterized in that: The moisture-proof layer (33) is an EPDM rubber layer.
8. The low temperature resistant liquid-cooled charging pile cable according to claim 1, characterized in that: The buffer outer layer (34) is a ceramic silicone rubber layer.