Cable for new energy automobile conduction direct current charging system

Abstract

The utility model provides a cable for a conduction direct current charging system of a new energy automobile, belongs to the technical field of electric power engineering, and aims to solve the problems that the temperature is too high when the cable is not charged in time, the cable is too high in temperature when used for a long time, and the cable is melted and catches fire. Comprising a protective rubber skin, a copper wire rubber skin, a cable copper wire, a limiting filler, a thermo-sensitive paper layer, an overheating warning mechanism and an overheating dismounting mechanism, the copper wire rubber sheet is located on the inner end face of the protective rubber sheet. The cable copper wire is fixedly connected to the inner end face of the copper wire rubber sheet. The limiting filler is located on the inner end face of the protective rubber skin. The thermo-sensitive paper layer is positioned on the outer end surface of the protective rubber skin; the overheating warning mechanism is arranged on the thermo-sensitive paper layer; and the overheating dismounting mechanism is arranged on the outer end face of the thermo-sensitive paper layer. By adopting the overheating warning mechanism, the use safety of the cable is improved, and by adopting the overheating dismounting mechanism, the reusability of the cable is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of power engineering technology, and more specifically, it relates to cables for conductive DC charging systems for new energy vehicles. Background Technology

[0002] New energy vehicles are powered by electricity and require charging. Charging is done via DC charging at charging stations. Each charging station is equipped with a charging gun, which is connected to the charging station via a cable. The charging gun is inserted into the car's charging port, and the DC power from the charging station is transmitted to the car through the cable.

[0003] According to CN202010184693.X, this invention discloses a charging cable for new energy vehicles, comprising: three power conductor cores, two auxiliary power conductor cores, an auxiliary control line and a main control line respectively formed by twisting two control conductor cores, and a sheath layer covering the outer surface of the sheath layer. The sheath layer is composed of the following components by weight: polyolefin elastomer, polypropylene resin, silane-coated modified aluminum hydroxide, aluminum diethylphosphinate, calcined kaolin, polyethylene wax, antioxidant, crosslinking agent, styrene-butadiene copolymer, and polyethylene glycol distearate; the polyolefin is composed of 50 to 80 parts by weight of ethylene-octene copolymer and 20 to 50 parts by weight of linear low-density polyethylene. Under IRM902 test oil conditions of 168h / 100±2℃, the sheath layer of this invention exhibits a tensile strength retention rate of 75% and an elongation at break retention rate of 80%, enhancing the oil resistance of the charging cable sheath layer.

[0004] Based on the above, existing cables generate heat due to resistance when transmitting DC power. If an unsuitable cable is not selected, resulting in excessively high resistance, or if the cable has poor contact after a period of use, it can lead to excessive heating of the cable. If this is not addressed in time, the cable temperature will be too high during charging, and if the cable has been used for a long time, there is a risk of the cable melting and catching fire. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a cable for a DC charging system for new energy vehicles. This solves the problems that existing cables generate heat due to resistance when transmitting DC power, and that excessive heat can occur when the cable is not properly selected, or when poor contact occurs after a period of use. Furthermore, if the cable temperature is too high during charging and the cable has been in use for a long time, there is a risk of the cable melting and catching fire.

[0006] The purpose and effectiveness of this utility model cable for a conductive DC charging system for new energy vehicles are achieved through the following specific technical means:

[0007] A cable for a conductive DC charging system for new energy vehicles includes a protective rubber sheath, a copper wire rubber sheath, copper wires, limiting fillers, a thermal paper layer, an overheat warning mechanism, and an overheat disassembly mechanism. The copper wire rubber sheath comprises four sets, each located on the inner end face of the protective rubber sheath and evenly arranged. The copper wires are also arranged in four sets, each fixedly connected to the inner end face of one of the four sets of copper wire rubber sheaths. The limiting fillers are also arranged in four sets, located at the four corners of the inner end face of the protective rubber sheath and pressed against the four sets of copper wire rubber sheaths. The thermal paper layer is located on the outer end face of the protective rubber sheath and is coated with a thermal coating. The overheat warning mechanism is located on the thermal paper layer. The overheat disassembly mechanism is located on the outer end face of the thermal paper layer.

[0008] Furthermore, the overheat warning mechanism includes: cable filler; the cable filler is located on the inner end face of the protective rubber sheath, the cable filler is located on the inner end face of the four sets of copper wire rubber sheaths, and the cable filler is respectively squeezed and connected to the four sets of copper wire rubber sheaths.

[0009] Furthermore, the overheat warning mechanism also includes a connecting adhesive layer; the connecting adhesive layer is fixedly connected to the inner end face of the thermal paper layer and is adhesively connected to the outer end face of the protective rubber sheet.

[0010] Furthermore, the overheat disassembly mechanism includes: a cable protective layer and protective protrusions; the cable protective layer is fixedly connected to the outer end face of the thermal paper layer, and the cable protective layer is a transparent rubber cylindrical structure; multiple sets of protective protrusions are provided, and the multiple sets of protective protrusions are respectively fixedly connected to the outer end face of the cable protective layer, and the multiple sets of protective protrusions are transparent rubber semi-circular structures.

[0011] Furthermore, the overheat disassembly mechanism also includes a replacement groove; multiple sets of replacement grooves are provided, which are respectively opened on the upper side of the thermal paper layer and the upper side of the cable protection layer, and the multiple sets of replacement grooves are evenly arranged.

[0012] Furthermore, the overheat disassembly mechanism also includes a disassembly groove; multiple sets of disassembly grooves are provided, each set being located at the middle position of the upper end face of the cable protective layer, and the multiple sets of disassembly grooves are located at the positions of multiple sets of replacement grooves.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This invention employs an overheat warning mechanism, where a thermal paper layer is installed on the outer end face of the protective rubber sheath. The thermal paper layer constantly senses the temperature generated by the cable. When the cable is heating normally, the thermal paper layer will not change color. However, when the cable overheats to around 70 degrees Celsius, the thermal paper layer will change from white to blue or black. This color change indicates that the cable has overheated, its resistance is too high, or there is poor contact, requiring maintenance. This design avoids the problem of personnel being unable to detect cable overheating in time, thus improving the safety of cable use.

[0015] This invention employs an overheat disassembly mechanism to protect the thermal paper layer inside the cable protective layer, while the protective protrusions and cable protective layer protect the thermal paper layer on the outside, ensuring the safety of the thermal paper layer inside. When the thermal paper layer needs to be replaced, the thermal paper layer is peeled off from the outside of the protective rubber layer by replacing the groove and removing the groove, and then a new thermal paper layer is pasted on, ensuring that the cable can be reused and guaranteeing the cable's reusability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the isoaxial structure of the charging cable of this utility model.

[0017] Figure 2 This is a schematic diagram of the layered structure of the charging cable of this utility model.

[0018] Figure 3 This is a cross-sectional structural diagram of the charging cable of this utility model.

[0019] Figure 4 This is a schematic diagram of the structure of the thermal paper layer of this utility model.

[0020] Figure 5 This is a schematic diagram of the cable protective layer of this utility model.

[0021] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0022] 1. Protective rubber sheath; 2. Copper wire rubber sheath; 3. Cable copper wire; 4. Limiting filler; 5. Cable filler; 6. Thermal paper layer; 601. Connecting adhesive layer; 7. Cable protective layer; 701. Protective protrusion; 8. Replacement groove; 9. Removal groove. Detailed Implementation

[0023] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0024] Example 1:

[0025] As attached Figure 1 To be continued Figure 3 As shown:

[0026] This utility model provides a cable for a conductive DC charging system for new energy vehicles, including a protective rubber sheath 1, a copper wire rubber sheath 2, a cable copper wire 3, a limiting filler 4, a thermal paper layer 6, and an overheat warning mechanism. Four sets of copper wire rubber sheaths 2 are provided, each located on the inner end face of the protective rubber sheath 1, and are evenly arranged on the inner end face. Four sets of cable copper wires 3 are provided, each fixedly connected to the inner end face of the four sets of copper wire rubber sheaths 2. Four sets of limiting fillers 4 are provided, each located at one of the four corners of the inner end face of the protective rubber sheath 1, and are extruded and connected to the four sets of copper wire rubber sheaths 2. The thermal paper layer 6 is located on the outer end face of the protective rubber sheath 1, and its surface is coated with a thermal coating. The overheat warning mechanism is located on the thermal paper layer 6.

[0027] The overheat warning mechanism includes: cable filler 5; cable filler 5 is located on the inner end face of the protective rubber sheath 1 and on the inner end face of the four sets of copper wire rubber sheaths 2. The cable filler 5 is squeezed and connected to the four sets of copper wire rubber sheaths 2 respectively. During use, the cable filler 5 and the four sets of limiting fillers 4 stabilize the position of the four sets of copper wire rubber sheaths 2 to ensure the internal stability of the cable.

[0028] The overheat warning mechanism also includes a connecting adhesive layer 601. The connecting adhesive layer 601 is fixedly connected to the inner end face of the thermal paper layer 6 and is also adhesively connected to the outer end face of the protective rubber sheath 1. During use, the thermal paper layer 6 is installed on the outer end face of the protective rubber sheath 1 through the connecting adhesive layer 601, which facilitates the thermal paper layer 6 to detect the heat generated by the cable. The temperature on the outside of the cable may reach about 40℃-50℃, and the temperature detected by the thermal paper layer 6 is about 70℃. When the temperature on the outside of the cable is too high, the thermal paper layer 6 will change from white to blue or black, indicating to personnel that the cable is overheating and needs to be maintained or replaced.

[0029] The specific usage and function of this first embodiment are as follows:

[0030] During use, the cable filler 5 and four sets of limiting fillers 4 stabilize the positions of the four sets of copper wire rubber sheaths 2, ensuring the internal stability of the cable. The thermal paper layer 6 is installed on the outer end face of the protective rubber sheath 1 through the connecting adhesive layer 601, which facilitates the thermal paper layer 6 to detect the heat generated by the cable. The temperature on the outside of the cable may reach about 40℃-50℃, and the temperature detected by the thermal paper layer 6 is about 70℃. When the temperature on the outside of the cable is too high, the thermal paper layer 6 will change from white to blue or black, indicating that the cable is overheating and needs to be maintained or replaced. This realizes the detection of whether the cable is overheating during use.

[0031] Example 2:

[0032] Based on Example 1, as shown in the appendix Figure 4 and attached Figure 5 As shown:

[0033] This utility model provides a cable for a conductive DC charging system for new energy vehicles, and also includes an overheat disassembly mechanism. The overheat disassembly mechanism is disposed on the outer end face of the thermal paper layer 6. The overheat disassembly mechanism includes: a cable protective layer 7 and protective protrusions 701. The cable protective layer 7 is fixedly connected to the outer end face of the thermal paper layer 6 and is a transparent rubber cylindrical structure. Multiple sets of protective protrusions 701 are provided, and the multiple sets of protective protrusions 701 are respectively fixedly connected to the outer end face of the cable protective layer 7. The multiple sets of protective protrusions 701 are transparent rubber semi-circular structures. During use, the cable protective layer 7 and the protective protrusions 701 protect the thermal paper layer 6 inside, avoiding the problem of damage to the thermal paper layer 6 due to friction and impact. When the cable rubs, it will first rub against the protective protrusions 701.

[0034] The overheat disassembly mechanism also includes a replacement groove 8. Multiple sets of replacement grooves 8 are provided, which are respectively opened on the upper side of the thermal paper layer 6 and the upper side of the cable protection layer 7. The multiple sets of replacement grooves 8 are evenly distributed. During use, when the thermal paper layer 6 changes color and cannot be restored to its original color, the thermal paper layer 6 needs to be replaced. The thermal paper layer 6 and the upper side of the cable protection layer 7 are torn apart by the replacement groove 8.

[0035] The overheat disassembly mechanism also includes a disassembly groove 9. Multiple sets of disassembly grooves 9 are provided, and the multiple sets of disassembly grooves 9 are respectively opened in the middle of the upper end face of the cable protective layer 7. The multiple sets of disassembly grooves 9 are located at the positions of multiple sets of replacement grooves 8. During use, when the replacement groove 8 tears open the cable protective layer 7, it is torn open by the disassembly groove 9. The disassembly groove 9 makes it easier to tear open and replace the cable protective layer 7 with less effort.

[0036] The specific usage and function of this second embodiment are as follows:

[0037] During use, the cable protective layer 7 and the protective protrusion 701 protect the thermal paper layer 6 inside, preventing the thermal paper layer 6 from being damaged by friction and impact. When the cable rubs, it will first rub against the protective protrusion 701. When the thermal paper layer 6 changes color, it cannot be restored to its original color and needs to be replaced. The thermal paper layer 6 and the upper side of the cable protective layer 7 are torn apart by the replacement groove 8. When tearing the cable protective layer 7 by the replacement groove 8, it is torn apart by the disassembly groove 9. The disassembly groove 9 makes it easier to tear and replace the cable protective layer 7, making it easier to replace the thermal paper layer 6 on the outside of the cable.

[0038] The following points should be noted in this article:

[0039] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0040] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0041] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A cable for a conductive DC charging system for new energy vehicles, characterized in that: The system includes a protective rubber sheath (1), a copper wire rubber sheath (2), a cable copper wire (3), a limiting filler (4), a thermal paper layer (6), an overheat warning mechanism, and an overheat disassembly mechanism. The copper wire rubber sheath (2) consists of four sets, each located on the inner end face of the protective rubber sheath (1), and the four sets are evenly arranged on the inner end face of the protective rubber sheath (1). The cable copper wire (3) consists of four sets, each fixedly connected to one of the four sets of copper wire rubber sheaths. The inner end face of the wire rubber sheet (2); the limiting filler (4) is provided in four sets, and the four sets of limiting fillers (4) are respectively located at the four corners of the inner end face of the protective rubber sheet (1). The four sets of limiting fillers (4) are respectively squeezed and connected to the four sets of copper wire rubber sheets (2); the thermal paper layer (6) is located on the outer end face of the protective rubber sheet (1), and the surface of the thermal paper layer (6) is coated with thermal coating; the overheat warning mechanism is set on the thermal paper layer (6); the overheat disassembly mechanism is set on the outer end face of the thermal paper layer (6).

2. The cable for a conductive DC charging system for new energy vehicles as described in claim 1, characterized in that: The overheat warning mechanism includes: cable filler (5); the cable filler (5) is located on the inner end face of the protective rubber sheath (1), the cable filler (5) is located on the inner end face of the four sets of copper wire rubber sheaths (2), and the cable filler (5) is extruded and connected to the four sets of copper wire rubber sheaths (2) respectively.

3. The cable for a conductive DC charging system for new energy vehicles as described in claim 1, characterized in that: The overheat warning mechanism further includes: a connecting adhesive layer (601); the connecting adhesive layer (601) is fixedly connected to the inner end face of the thermal paper layer (6), and the connecting adhesive layer (601) is adhesively connected to the outer end face of the protective rubber skin (1).

4. The cable for a conductive DC charging system for new energy vehicles as described in claim 1, characterized in that: The overheat disassembly mechanism includes: a cable protective layer (7) and protective protrusions (701); the cable protective layer (7) is fixedly connected to the outer end face of the thermal paper layer (6), and the cable protective layer (7) is a transparent rubber cylindrical structure; multiple sets of protective protrusions (701) are provided, and multiple sets of protective protrusions (701) are fixedly connected to the outer end face of the cable protective layer (7), and multiple sets of protective protrusions (701) are transparent rubber semi-circular structures.

5. The cable for a conductive DC charging system for new energy vehicles as described in claim 1, characterized in that: The overheat disassembly mechanism also includes a replacement groove (8); the replacement groove (8) is provided in multiple sets, and the multiple sets of replacement grooves (8) are respectively opened on the upper side of the thermal paper layer (6) and the upper side of the cable protection layer (7), and the multiple sets of replacement grooves (8) are evenly arranged.

6. The cable for a conductive DC charging system for new energy vehicles as described in claim 5, characterized in that: The overheat disassembly mechanism further includes: disassembly groove (9); the disassembly groove (9) is provided in multiple sets, and the multiple sets of disassembly grooves (9) are respectively opened in the middle of the upper end face of the cable protection layer (7), and the multiple sets of disassembly grooves (9) are located at the positions of multiple sets of replacement grooves (8).

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