Charging pile cable

Abstract

The utility model discloses a charging pile cable, relates to charging cable technical field, including sheath subassembly and cable core subassembly, sheath subassembly includes oversheath, taped covering and first filling rope, the outer wall of taped covering is attached to oversheath inner wall in sleeve joint, the first filling rope is filled in the inside of taped covering. The cable core assembly comprises a main power line core, a signal cable core and a control cable core, and the main power line core, the signal cable core and the control cable core are all arranged in the wrapping layer and are mutually twisted with the first filling rope. The main power line core can be used for the charging pile to transmit electric energy to an electric vehicle and charge the electric vehicle. The signal cable core can be used for transmitting electric information between the charging pile and the electric vehicle, such as charging power and charged electric quantity information. After the control cable core is connected with the charging pile and the electric vehicle, the charging pile and the electric vehicle can be mutually controlled, and personalized charging is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of charging cables, and particularly relates to a charging pile cable. Background Art

[0002] With the annual growth of the sales volume of electric vehicles, the demand for charging piles by users has also shown an explosive growth trend. In addition to delivering electric energy from the charging pile to the battery of the electric vehicle, the charging pile cable is also responsible for transmitting the communication signals between the electric vehicle and the charging pile to achieve two-way information interaction, including the charging status and real-time control of the charging process, etc.

[0003] The prior art with the publication number of CN206685173U discloses a multi-functional DC charging pile cable for electric vehicles, which is composed of a main power wire core, a grounding wire core, an auxiliary power wire core, a charging connection confirmation wire core, a safety protection control wire core, a wrapping layer, and a sheath layer; the main power wire core, the grounding wire core, the auxiliary power wire core, the charging connection confirmation wire core, and the safety protection control wire core are in a stranded and cabled structure, the voids of the cable core are filled with fillers, a wrapping layer is arranged on the outside, and an extruded sheath layer is arranged outside the wrapping layer.

[0004] However, the existing charging pile cable still has deficiencies. For example, the charging pile cable lacks a control core. After the cable is connected to the charging pile and the electric vehicle, the charging pile and the electric vehicle cannot control each other, such as adjusting the magnitude of the charging current and setting the charging time, etc., resulting in the inability to achieve personalized charging. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the above technical deficiencies, and propose a charging pile cable to solve the technical problem that in the prior art, the charging pile cable lacks a control core, and after the cable is connected to the charging pile and the electric vehicle, the charging pile and the electric vehicle cannot control each other, resulting in the inability to achieve personalized charging.

[0006] To achieve the above technical purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a charging pile cable, including:

[0008] A sheath assembly, including an outer sheath, a wrapping layer, and a first filling rope sequentially arranged from inside to outside; and

[0009] A cable core assembly, including a main power wire core, a signal cable core, and a control cable core. The main power wire core, the signal cable core, and the control cable core are all arranged inside the wrapping layer and are stranded with the first filling rope; the control cable core includes a polyester tape, a second filling rope, and multiple control cores arranged inside the polyester tape, and the multiple control cores and the second filling rope are stranded with each other.

[0010] In some embodiments, both the first filling cord and the second filling cord are flame-retardant high-temperature polypropylene mesh filling cords.

[0011] In some embodiments, the signal cable core includes an aluminum foil tape layer, a braided shielding layer, an inner sheath, a third filling cord, and multiple signal cores. The aluminum foil tape layer, the braided shielding layer, and the inner sheath are arranged in sequence from the inside out, and the third filling cord and the multiple signal cores are twisted together inside the aluminum foil tape layer.

[0012] In some embodiments, both the control core and the signal core include a composite conductor and a fourth insulating layer. The composite conductor is formed by twisting multiple bare copper conductors, aramid filaments, and copper foil wires together, and the fourth insulating layer wraps the composite conductor.

[0013] In some embodiments, the copper foil wire includes bulletproof wire and a copper skin wrapped around the bulletproof wire.

[0014] In some embodiments, the cable core assembly further includes a grounding wire core and an auxiliary power supply wire core disposed inside the wrapping layer.

[0015] In some embodiments, the main power supply wire core includes a main power supply conductor and a first insulating layer arranged in sequence from the inside out; the grounding wire core includes a grounding wire conductor and a second insulating layer arranged in sequence from the inside out; the auxiliary power supply wire core includes an auxiliary power supply conductor and a third insulating layer arranged in sequence from the inside out.

[0016] In some embodiments, the main power supply conductor, the grounding wire conductor, and the auxiliary power supply conductor are all oxygen-free copper.

[0017] In some embodiments, the first insulating layer, the second insulating layer, and the third insulating layer are all made of thermoplastic halogen-free flame-retardant elastomer insulating materials.

[0018] In some embodiments, the wrapping layer is a high-strength lightweight non-woven fabric tape.

[0019] Compared with the prior art, the charging pile cable provided by the present utility model includes a main power supply wire core that can be used for the charging pile to transmit electric energy to the electric vehicle and charge the electric vehicle. The signal cable core can be used to transmit electrical information between the charging pile and the electric vehicle, such as charging power and charged power information, etc. After the control cable core is connected between the charging pile and the electric vehicle, the charging pile and the electric vehicle can control each other to achieve personalized charging. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the charging pile cable provided by the embodiment of the present utility model;

[0021] Figure 2It is a schematic structural diagram of a control cable core provided by an embodiment of the present utility model;

[0022] Figure 3 It is a schematic structural diagram of a signal cable core provided by an embodiment of the present utility model;

[0023] Figure 4 It is a schematic structural diagram of a control core / signal core provided by an embodiment of the present utility model;

[0024] Figure 5 It is a schematic structural diagram of an auxiliary power supply cable core provided by an embodiment of the present utility model;

[0025] Figure 6 It is a schematic structural diagram of a main power supply cable core provided by an embodiment of the present utility model. Detailed implementation manners

[0026] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0027] In order to solve the technical problem in the prior art that the charging pile cable lacks a control core, and after the cable is connected to the charging pile and the electric vehicle, the charging pile and the electric vehicle cannot control each other, resulting in the inability to achieve personalized charging, the present utility model provides a charging pile cable that can realize mutual control and personalized charging between the charging pile and the electric vehicle.

[0028] It should be noted that the charging pile cable described in the present utility model is used for but not limited to electric vehicle charging piles, etc. For the convenience of description, in the present utility model, only the case where the charging pile cable is applied to an electric vehicle charging pile is taken as an example for description, and the principle of the charging pile cable applied to other types of devices is substantially the same as that applied to the electric vehicle charging pile, and will not be elaborated herein one by one.

[0029] Please refer to Figure 1 , Figure 1 It is a schematic structural diagram of a charging pile cable in an embodiment of the present utility model. The charging pile cable 100 includes a sheath assembly 1 and a cable core assembly 2. The sheath assembly z includes an outer sheath 11, a wrapping layer 12 and a first filling cord 13. The outer wall of the wrapping layer 12 is sleeved and attached to the inner wall of the outer sheath 11, and the first filling cord 13 is filled inside the wrapping layer 12. The cable core assembly 2 includes a main power supply cable core 21, a signal cable core 22 and a control cable core 23. The main power supply cable core 21, the signal cable core 22 and the control cable core 23 are all arranged inside the wrapping layer 12 and are twisted with the first filling cord 13.

[0030] In this embodiment, the main power cable core 21 can be used for the charging pile to transmit electric energy to the electric vehicle and charge the electric vehicle. The signal cable core 22 can be used to transmit electrical information between the charging pile and the electric vehicle, such as charging power and charged power information, etc. After the control cable core 23 is connected between the charging pile and the electric vehicle, the charging pile and the electric vehicle can control each other to achieve personalized charging. In addition, the number of main power cable cores 21 is four, and the four main power cable cores 21 can simultaneously drive the charging pile to transmit power to the electric vehicle, which is beneficial to improving the charging efficiency.

[0031] In one embodiment, please refer to Figure 2 , the control cable core 23 includes a polyester tape 231, a second filling cord 232 and a plurality of control cores 233 disposed inside the polyester tape 231, and the plurality of control cores 233 and the second filling cord 232 are twisted together. In this embodiment, the number of control cores 233 is four, and the four control cores 233 can be respectively used to control the signal transmission between the charging pile and the electric vehicle to achieve diversified control. In other embodiments, the number of control cores 233 can also be correspondingly set according to the number of signals to be controlled.

[0032] In one embodiment, please refer to Figure 3 , the signal cable core 22 includes an aluminum foil tape layer 221, a braided shielding layer 222, an inner sheath 223, a third filling cord 224 and a plurality of signal cores 225. The aluminum foil tape layer 221, the braided shielding layer 222 and the inner sheath 223 are arranged in sequence from the inside to the outside, and the third filling cord 224 and the plurality of signal cores 225 are twisted together inside the aluminum foil tape layer 221. In this embodiment, the braided shielding layer 222 and the inner sheath 223 are sequentially arranged outside the aluminum foil tape layer 221. Compared with the traditional extrusion of the sheath outside the aluminum foil tape layer 221 or the braided shielding layer 222, this embodiment can significantly improve the cable shielding efficiency, and can achieve a transfer impedance ≤ 31 mΩ / m and a shielding attenuation ≥ 70 dB. In addition, this embodiment includes two signal cores 225, which can be used to transmit two electrical signals. In other embodiments, the number of signal cores 225 can also be set according to the number of electrical signals to be transmitted.

[0033] In one embodiment, please refer to Figure 4, both the control core 233 and the signal core 225 include a composite conductor 226 and a fourth insulating layer 227. The composite conductor 226 is formed by twisting multiple bare copper conductors, aramid filaments, and copper foil wires together, and the fourth insulating layer 227 wraps the composite conductor 226. Further, the copper foil wire includes a bulletproof wire and a copper skin wrapped around the bulletproof wire, making the control core 233 and the signal core 225 have good electrical conductivity, stronger antioxidant ability and flexibility. Among them, the copper foil wire is made of a bulletproof wire and a copper skin wrapped around the bulletproof wire. Compared with the traditional ordinary copper foil wire made of polyester fiber, this solution can withstand greater longitudinal tension and has higher swing and bending performance of the copper foil wire.

[0034] In one embodiment, please refer to Figure 1 and Figure 5 , the cable core assembly 2 further includes a ground wire core 24 and an auxiliary power supply core 25 disposed inside the wrapping layer 12. In this embodiment, the conductor of the ground wire core 24 is made of oxygen-free copper, which has good electrical conductivity, corrosion resistance, flexibility and heat conductivity. The auxiliary power supply core 25 includes multiple auxiliary power supply conductors 251 and a third insulating layer 252 from inside to outside in sequence. The auxiliary power supply core 25 can be used to assist the charging pile to charge the electric vehicle.

[0035] In one embodiment, please refer to Figure 6 , the main power supply core 21 includes a main power supply conductor 211 and a first insulating layer 212 arranged in sequence from inside to outside; the ground wire core 24 includes a ground wire conductor and a second insulating layer arranged in sequence from inside to outside.

[0036] In one embodiment, the main power supply conductor 211, the ground wire conductor 241, and the auxiliary power supply conductor 251 are all made of oxygen-free copper, which has good electrical conductivity, corrosion resistance, flexibility and heat conductivity.

[0037] In one embodiment, the first insulating layer 212, the second insulating layer, the third insulating layer 252, and the fourth insulating layer 227 are all made of a thermoplastic halogen-free flame-retardant elastomer insulating material. This material is environmentally friendly and non-toxic, meets environmental protection requirements, has excellent processing performance, can be recycled, saves resources and energy, and has good impact resistance and fatigue resistance, high impact strength, low temperature flexibility, chemical resistance, high tear strength and high friction resistance and other characteristics. In addition, the thickness of the first insulating layer 212 can be 1.16 - 1.4 mm; the thickness of the second insulating layer 322 can be 0.8 - 1.0 mm; the thickness of the third insulating layer 252 can be 0.64 - 0.8 mm; the thickness of the fourth insulating layer 227 can be 0.35 - 0.5 mm.

[0038] In one embodiment, the wrapping layer 12 is a high-strength light non-woven fabric tape, which has high strength, strong water resistance and environmental friendliness. Since the high-strength non-woven fabric is formed by overlapping fiber meshes, it is not easily damaged and can withstand great tensile and compressive forces; the surface of the high-strength non-woven fabric has been specially treated to be able to well resist the penetration of moisture, which can ensure that it can maintain its strength and stability even in a humid environment; since the high-strength non-woven fabric has no chemical components, it is non-toxic, odorless and will not pollute the environment, and it is a very environmentally friendly material that meets ROHS.

[0039] In one embodiment, the first filling rope 13, the second filling rope 232 and the third filling rope 224 are all flame-retardant high-temperature polypropylene mesh filling ropes, so that the filling ropes are light, soft, with light material and good softness, which is convenient for handling and operation; the filling ropes also have good corrosion resistance and can resist the erosion of chemical substances, thereby extending the service life; the filling ropes do not absorb water, are not easily deformed and have strong adaptability; the filling ropes are not easily rotten, non-toxic and environmentally friendly and will not rot when filled in the cable for a long time; the filling ropes have good flame retardancy and high-temperature resistance and good electrical insulation; the filling ropes have excellent high-frequency insulation performance and withstand voltage performance; the filling ropes have a relatively high tensile strength and are suitable for various occasions; the filling ropes can resist the erosion of acid and alkali substances and have good mildew resistance; the filling ropes are not easily embrittled, wear-resistant and have the advantage of low shrinkage rate.

[0040] To better understand the present utility model, the following combines Figures 1 to 6 to elaborate on the technical solution of the present utility model in detail:

[0041] 1. Corresponding to the problems of poor anti-electromagnetic signal interference ability and short service life of the existing cable, in this solution, an aluminum foil tape layer 221, a braided shielding layer 222 and an inner sheath 223 are sequentially arranged outside the signal cable core 22. Compared with the traditional extrusion of a sheath outside the aluminum foil tape layer or the braided shielding layer, this application can improve the cable shielding efficiency, fully ensure the sensitivity and stability of signal transmission during the use process by the customer, and thus extend the service life of the cable.

[0042] 2. The conductor of this application uses an oxygen-free copper conductor. Copper is an excellent electrical conductor with good electrical conductivity and a high resistance temperature coefficient, which enables copper wires to withstand higher currents and are not easily overloaded. Copper also has good corrosion resistance, workability and weldability, which enables copper conductors to be used in different complex environments and can be conveniently processed and installed.

[0043] 3. The cable conductors of this application are all stranded in the same direction, with the inner and outer layers in opposite directions. The conductors stranded by this method have a small outer diameter, high flexibility, and a large current-carrying capacity. Compared with similar products, through the adjustment of the product structure and production method, the present utility model not only reduces the cross-sectional areas of the protective grounding wire core and the auxiliary power supply wire core, but also reduces the outer diameter of the conductors of the same specification by changing the conductor stranding method, further reducing the overall outer diameter of the cable.

[0044] The specific implementation manners of the present utility model described above do not constitute a limitation on the protection scope of the present utility model. Any other corresponding changes and deformations made according to the technical concept of the present utility model shall be included in the protection scope of the claims of the present utility model.

Claims

1. A charging pile cable, characterized in that, Comprising: A sheath assembly, including an outer sheath, a wrapping layer, and a first filling cord arranged from inside to outside in sequence; And A cable core assembly, including a main power cord core, a signal cable core, and a control cable core. The main power cord core, the signal cable core, and the control cable core are all arranged inside the wrapping layer and are twisted with the first filling cord; the control cable core includes a polyester tape and a second filling cord and multiple control cores arranged inside the polyester tape. The multiple control cores and the second filling cord are twisted with each other.

2. The charging pile cable according to claim 1, characterized in that, Both the first filling cord and the second filling cord are flame-retardant high-temperature polypropylene mesh filling cords.

3. The charging pile cable according to claim 1, wherein, The signal cable core includes an aluminum foil tape layer, a braided shielding layer, an inner sheath, a third filling cord, and multiple signal cores. The aluminum foil tape layer, the braided shielding layer, and the inner sheath are arranged from inside to outside in sequence. The third filling cord and the multiple signal cores are all twisted with each other inside the aluminum foil tape layer.

4. The charging pile cable according to claim 3, characterized in that, Both the control core and the signal core include a composite conductor and a fourth insulating layer. The composite conductor is formed by twisting multiple bare copper conductors, aramid filaments, and copper foil wires with each other, and the fourth insulating layer wraps the composite conductor.

5. The charging pile cable according to claim 4, wherein The copper foil wire includes a bulletproof wire and a copper skin wrapped around the outside of the bulletproof wire.

6. The charging pile cable according to claim 1, characterized in that, The cable core assembly further includes a ground wire core and an auxiliary power cord core arranged inside the wrapping layer.

7. The charging pile cable according to claim 6, characterized in that, The main power cord core includes a main power cord conductor and a first insulating layer arranged from inside to outside in sequence; the ground wire core includes a ground wire conductor and a second insulating layer arranged from inside to outside in sequence; the auxiliary power cord core includes an auxiliary power cord conductor and a third insulating layer arranged from inside to outside in sequence.

8. The charging pile cable according to claim 7, wherein The main power cord conductor, the ground wire conductor, and the auxiliary power cord conductor are all made of oxygen-free copper.

9. The charging pile cable according to claim 7, characterized in that The first insulating layer, the second insulating layer, and the third insulating layer are all made of a thermoplastic halogen-free flame-retardant elastomer insulating material.

10. The charging pile cable according to claim 1, characterized in that, The wrapping layer is a high-strength lightweight non-woven tape.

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