Alternating current cable assembly and charging pile

Abstract

The utility model discloses an alternating current cable assembly and a charging pile, the alternating current cable assembly is used for being installed on the charging pile, the alternating current cable assembly comprises a cable and a tensile device, one end of the cable is used for being connected with a butt joint seat of the charging pile, the tensile device comprises a tensile cylinder and a locking ring, the tensile cylinder is connected with the butt joint seat of the charging pile, and the locking ring is connected with the tensile cylinder. The cable is arranged in the tensile cylinder in a penetrating manner, a conical section is arranged on the tensile cylinder, lock teeth are arranged on the inner side surface of the end part, far away from the butt joint seat, of the tensile cylinder, the shape of the inner wall of the lock ring corresponds to that of the conical section of the tensile cylinder, and the lock ring sleeves the conical section of the tensile cylinder in a threaded fit manner; according to the alternating current cable assembly provided by the utility model, after the cable is connected with the butt joint seat of the charging pile, the lock ring and the conical section of the tensile cylinder are driven to rotate relatively, so that the lock teeth on the tensile cylinder abut against the side wall of the cable, and the tensile cylinder replaces a battery cell of the cable to bear dragging force borne between the cable and the butt joint seat; and the tensile property of the connection between the cable and the charging pile is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy vehicles, and in particular to an alternating current cable assembly and a charging pile. Background Art

[0002] At present, the domestic new energy electric vehicle charging cable belongs to a new industry. For family passenger car users, they usually charge at night during rest time to ensure sufficient power energy for the next day. However, under unsupervised conditions, especially in open parking lots in residential areas, there is no working status reminder during charging, and pedestrians are at great risk of electric shock; in addition, during the charging process, as the current continues to increase, the temperature of the charging cable continues to rise, and it will continue to heat up. Running in a hot state will cause thermal corrosion to the insulation and sheath, accelerate its aging, reduce its service life, or overload beyond the cable's tolerance temperature, and it is not easy to detect and cause fire hazards. In addition, the existing cable and charging pile connection is not tensile-resistant. When the user needs to charge the car, he needs to hold the charging gun and drag the cable. Long-term dragging can easily cause the connection between the cable and the charging pile to loosen or even detach, posing a safety hazard. Utility Model Content

[0003] In view of this, the purpose of the present invention is to overcome the deficiencies in the related art. The present invention provides an AC cable assembly and a charging pile.

[0004] The utility model provides the following technical solutions:

[0005] An alternating current cable assembly is used for being installed on a charging pile. The alternating current cable assembly comprises a cable and a tensile device.

[0006] One end of the cable is used to connect to the docking socket of the charging pile; the anti-tension device includes a tensile cylinder and a locking ring, one end of the tensile cylinder is connected to the docking socket of the charging pile, the cable is inserted into the tensile cylinder, the end of the tensile cylinder away from the docking socket is provided with a tapered section, the diameter of the end of the tensile cylinder away from the docking socket is smaller than the diameter of the end of the tensile cylinder close to the docking socket, the inner side surface of the end of the tensile cylinder away from the docking socket is provided with locking teeth, the inner wall shape of the locking ring corresponds to the shape of the tapered section of the tensile cylinder, and the locking ring is threadedly fitted on the tapered section of the tensile cylinder.

[0007] As a further improvement of the above technical solution, a rotating ring groove is provided on the side wall of the docking seat, and a rotating ring platform corresponding to the rotating ring groove is provided on the inner wall of the tension cylinder. The rotating ring platform is arranged in the rotating ring groove to limit the position of the tension cylinder relative to the axial direction of the docking seat without affecting the relative rotation of the tension cylinder and the docking seat.

[0008] As a further improvement of the above technical solution, the tension cylinder is divided into two left and right shells along the end diameter direction of the tension cylinder, and the two shells are fixedly connected by bolts.

[0009] As a further improvement of the above technical solution, the cable includes a copper conductor, an insulating layer, a filling body, and a tape layer from the inside to the outside. Specifically, the copper conductor is formed by twisting multiple copper conductors, the insulating layer is formed by extruding polymer plastics such as TPE (Thermoplastic Elastomer), cross-linked polyethylene, and PVC (Polyvinyl chloride), the filling body is made of polypropylene filling rope or cotton thread, and the tape layer is made of non-woven fabric or PET (polyethylene glycol terephthalate) tape.

[0010] As a further improvement of the above technical solution, the outer surface of the cable is provided with a thermochromic layer, and the color of the thermochromic layer can change with the temperature of the cable.

[0011] As a further improvement of the above technical solution, the thermochromic layer is formed by spraying the thermochromic paint directly on the wrapping layer.

[0012] As a further improvement of the above technical solution, a sheath layer is further provided on the outside of the thermochromic layer. The sheath layer is made of transparent material and is formed by extrusion of transparent wear-resistant PVC, TPE, TPU (thermoplastic polyurethane rubber) and other plastics.

[0013] As a further improvement of the above technical solution, a plurality of slots are evenly distributed on the circumferential side of the conical section relative to the axis of the tension tube.

[0014] As a further improvement of the above technical solution, a sealing plug is provided between the inner side of the end of the locking ring away from the docking seat and the cable, the sealing plug is sleeved on the cable, and a limit platform is provided at the end of the sealing plug away from the docking seat, and the diameter of the limit platform is larger than the inner diameter of the locking ring.

[0015] As a further improvement of the above technical solution, an anti-slip sleeve is provided on the locking ring.

[0016] The utility model also provides a charging pile, comprising any one of the above-mentioned AC cable assemblies.

[0017] Compared with the related art, the beneficial effects of the utility model are:

[0018] The AC cable assembly provided by the utility model, after the cable is connected to the docking socket of the charging pile, drives the locking ring and the tapered section of the tension-resistant cylinder to rotate relative to each other. Due to the cooperation between the locking ring and the tapered section, the tapered section is gradually squeezed toward the cable away from the end of the docking socket, that is, the locking teeth on the inner side of the tapered section on the tension-resistant cylinder are gradually pressed against the side wall of the cable and finally tightened. The pressing of the locking teeth against the side wall of the cable can generate a very large friction force, so that the tension-resistant cylinder and the cable have a reliable connection and cooperation; when the user holds the charging gun at the other end of the cable to charge the device, the cable will be dragged, and the tension-resistant cylinder can replace the battery core of the cable to bear the drag force between the cable and the docking socket, thereby improving the tension resistance and connection reliability of the connection between the cable and the charging pile.

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic structural diagram of an AC cable assembly from one perspective in one embodiment of the utility model is shown;

[0022] Figure 2 A schematic diagram of a disassembled AC cable assembly from one perspective in one embodiment of the utility model is shown;

[0023] Figure 3 The cross-sectional structure diagram of a cable in one embodiment of the utility model is shown.

[0024] Description of main component symbols:

[0025] 100-cable; 110-copper conductor; 120-insulating layer; 130-filling body; 140-taping layer; 150-thermochromic layer; 160-sheath layer; 200-tensile tube; 210-conical section; 211-slot; 220-locking tooth; 300-locking ring; 310-sealing plug; 320-anti-slip sleeve; 400-charging pile; 410-docking seat. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0031] Example 1

[0032] Combination Figure 1 , Figure 2 As shown, this embodiment provides an AC cable assembly for installation on a charging pile 400, and the AC cable assembly includes a cable 100 and a tensile device. One end of the cable 100 is used to connect to the docking socket 410 of the charging pile 400; the tensile device includes a tensile cylinder 200 and a locking ring 300, one end of the tensile cylinder 200 is connected to the docking socket 410 of the charging pile 400, and the cable 100 is inserted into the tensile cylinder 200, and the tensile cylinder 200 can provide reliable protection for the connection between the cable 100 and the docking socket 410; the end of the tensile cylinder 200 away from the docking socket 410 is provided with a conical section 210, and the diameter of the end of the tensile cylinder 200 away from the docking socket 410 is smaller than the diameter of the end of the tensile cylinder 200 close to the docking socket 410, and the tensile cylinder 200 away from the docking socket 410 is smaller than the diameter of the end of the tensile cylinder 200 close to the docking socket 410. A locking tooth 220 is provided on the inner side surface of the end portion, and the inner wall shape of the locking ring 300 corresponds to the shape of the tapered section 210 of the tension cylinder 200. The locking ring 300 is sleeved on the tapered section 210 of the tension cylinder 200 through threaded fitting. The locking ring 300 and the tapered section 210 of the tension cylinder 200 rotate relative to each other, which will cause the tapered section 210 to gradually squeeze away from the end of the docking seat 410 toward the cable 100, that is, the locking teeth 220 on the inner side of the tapered section 210 on the tension cylinder 200 gradually press against the side wall of the cable 100 and finally press tightly. The pressing of the locking teeth 220 against the side wall of the cable 100 can generate a very large friction force, thereby ensuring a reliable connection and fitting between the tension cylinder 200 and the cable 100.

[0033] Optionally, a rotating ring groove is provided on the side wall of the docking seat 410, and a rotating ring platform corresponding to the rotating ring groove is provided on the inner wall of the tension cylinder 200. The rotating ring platform is arranged in the rotating ring groove to limit the position of the tension cylinder 200 relative to the axial direction of the docking seat 410 without affecting the relative rotation of the tension cylinder 200 and the docking seat 410. Specifically, when the user drags the cable 100 for use, the cable 100 easily drives the tension cylinder 200 to rotate, and the tension cylinder 200 The pulling cylinder 200 is connected to the docking seat 410, which can easily generate a large torque between the tensile cylinder 200 and the cable 100, thereby causing the cable 100 to be torn by the locking teeth 220. The arrangement that the tensile cylinder 200 can rotate relative to the docking seat 410 can effectively release and eliminate the torque generated between the tensile cylinder 200 and the cable 100 as the tensile cylinder 200 and the cable 100 rotate synchronously, so that the tensile cylinder 200 can provide good tensile protection for the cable 100 without causing damage to the cable 100.

[0034] Optionally, the tension cylinder 200 is divided into two left and right shells along the end diameter direction of the tension cylinder 200 , and the two shells are fixedly connected by bolts to facilitate disassembly, assembly and maintenance of the tension cylinder 200 .

[0035] like Figure 3 As shown, optionally, the cable 100 includes, from the inside to the outside, a copper conductor 110, an insulating layer 120, a filler 130, and a tape layer 140. Specifically, the copper conductor 110 is formed by twisting a plurality of copper wires, which can greatly improve its conductivity, the insulating layer 120 is formed by extrusion of polymer plastics such as TPE (Thermoplastic Elastomer), cross-linked polyethylene, and PVC (Polyvinylchloride), the filler 130 is made of polypropylene filling rope or cotton thread, and the tape layer 140 is made of non-woven fabric or PET (polyethylene glycol terephthalate) tape.

[0036] Optionally, the outer surface of the cable 100 is provided with a thermochromic layer 150, and the color of the thermochromic layer 150 can change with the temperature of the cable 100; specifically, the domestic new energy electric vehicle charging cable belongs to a new industry. For users of family passenger cars, they usually charge at night during rest time to ensure sufficient power energy for the next day's car. However, under unsupervised conditions, especially in open parking lots in residential areas, there is no working status reminder during charging, and pedestrians are in great danger of electric shock; in addition, during the charging process, as the current of the charging cable continues to increase, the temperature of the cable 100 continues to rise, and it will continue to heat up. When running in a hot state, it will cause thermal corrosion to the insulation and sheath, accelerate its aging, reduce its service life or overload beyond the temperature that the cable 100 can withstand, and it is not easy to find and cause fire hazards. The thermochromic layer 150 provided on the outside of the cable 100 will show different colors at different temperatures during the charging process of the cable 100, making the hidden dangers intuitive, preventing them before they happen, and better ensuring safety.

[0037] Optionally, the thermochromic layer 150 is formed by spraying a thermochromic coating directly onto the wrapping layer 140, which is easy to operate. Of course, in other embodiments of the present invention, the thermochromic layer 150 may also be formed by wrapping a thermochromic tape, or by extruding a thermochromic plastic.

[0038] It should be noted that the main component of the thermochromic layer 150 is a thermochromic pigment, which is prepared from an electron transfer type organic compound system. Electron transfer type organic compounds are a type of organic color system with a special chemical structure. At a specific temperature, the molecular structure of the organic matter changes due to electron transfer, thereby achieving color change. This color-changing substance is not only bright in color, but also can achieve color change from "colored == colorless" state, which is not available in heavy metal complex salt type and liquid crystal type reversible thermochromic substances; among them, the basic thermochromic colors of thermochromic pigments: royal blue, sea blue, dark blue, bright red, vermilion, rose red, grass green, peacock green, dark green, medium green, orange red, golden yellow, black and other adjustable colors; the basic thermochromic temperatures of thermochromic pigments: -5℃, 0℃, 5℃, 10℃, 16℃, 21℃, 31℃, 33℃, 38℃, 43℃, 45℃, 50℃, 65℃, 70℃, 78℃; and the thermochromic pigments are reversible and have a long color change life.

[0039] Optionally, a sheath layer 160 is further provided on the outside of the thermochromic layer 150. The sheath layer 160 is made of a transparent material to facilitate observation of the color change of the thermochromic layer 150. The sheath layer 160 is formed by extrusion of transparent wear-resistant PVC, TPE, TPU (thermoplastic polyurethane rubber) and other plastics to increase protection for the thermochromic layer 150 and extend the service life of the thermochromic layer 150.

[0040] Optionally, the thickness of the sheath layer 160 is 4 to 6 mm, which can effectively improve the protective effect of the sheath layer 160 on the thermochromic layer 150 .

[0041] Optionally, a plurality of grooves 211 are evenly distributed on the circumferential side of the conical section 210 relative to the axis of the tensile cylinder 200, so as to facilitate more obvious squeezing of the conical section 210 when the locking ring 300 is threadedly engaged with the conical section 210, so that the locking teeth 220 in the conical section 210 fit more closely with the side wall of the cable 100, thereby improving the connection reliability between the tensile cylinder 200 and the cable 100.

[0042] Optionally, a sealing plug 310 is provided between the inner side of the end of the locking ring 300 away from the docking seat 410 and the cable 100, and the sealing plug 310 is sleeved on the cable 100. A limit platform is provided at the end of the sealing plug 310 away from the docking seat 410, and the diameter of the limit platform is larger than the inner diameter of the locking ring 300. By providing the sealing plug 310 between the inner side of the end of the locking ring 300 away from the docking seat 410 and the cable 100, dust, dirt, etc. can be effectively prevented from entering the gap between the tensile cylinder 200 and the cable 100, thereby preventing the tensile cylinder 200 from being corroded and damaged.

[0043] Optionally, an anti-slip sleeve 320 is provided on the locking ring 300 to increase the friction of the outer surface of the locking ring 300, thereby preventing the user from slipping when holding the locking ring 300 and rotating it, thereby improving its reliability in use.

[0044] When installing the AC cable assembly provided in the present embodiment, the cable 100 is first connected to the docking socket 410 of the charging pile 400, and then the locking ring 300 and the tapered section 210 of the tension cylinder 200 are driven to rotate relative to each other. Due to the cooperation between the locking ring 300 and the tapered section 210, the tapered section 210 is gradually squeezed toward the cable 100 away from the end of the docking socket 410, that is, the locking teeth 220 on the inner side of the tapered section 210 on the tension cylinder 200 are gradually pressed against the side wall of the cable 100 and finally tightened. The locking teeth 220 pressed against the side wall of the cable 100 can generate a very large friction force, so that the tension cylinder 200 and the cable 100 have a reliable connection and cooperation; when the user holds the charging gun at the other end of the cable 100 to charge the device, the cable 100 will be dragged. During the dragging process, the cable 100 is The tension cylinder 200 can replace the battery cell of the cable 100 to bear the dragging force between the cable 100 and the docking socket 410, thereby avoiding the battery cell at the connection between the cable 100 and the charging pile 400 from being damaged or broken due to dragging, and can effectively improve the tensile performance and connection reliability of the connection between the cable 100 and the charging pile 400; and in the process of charging the device with the charging pile 400, as the current of the cable 100 continues to increase, the temperature of the cable 100 continues to rise, and it will continue to heat up. At this time, the temperature-sensitive color-changing layer 150 provided on the outside of the cable 100 will show different colors at different temperatures during the charging process of the cable 100, so as to remind the user of the usage status of the cable 100 and warn passers-by, thereby improving its safety in use.

[0045] Example 2

[0046] The utility model also provides a charging pile 400, which can be divided into a public charging pile, a household charging pile, and a charging pile for charging other devices according to its charging power, including a pile body and the sealing assembly described in Example 1, and the AC cable assembly is installed on the pile body. The charging pile 400 has all the beneficial effects of the AC cable assembly, which will not be described in detail here.

[0047] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0048] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An AC cable assembly for installation on a charging pile, characterized in that: The AC power cable assembly comprises: A cable, one end of which is used to connect to the docking station of the charging pile; The anti-tensile device comprises an anti-tensile cylinder and a locking ring, one end of the anti-tensile cylinder is connected to the docking seat of the charging pile, the cable is passed through the anti-tensile cylinder, a tapered section is provided at the end of the anti-tensile cylinder away from the docking seat, the diameter of the end of the anti-tensile cylinder away from the docking seat is smaller than the diameter of the end of the anti-tensile cylinder close to the docking seat, locking teeth are provided on the inner side surface of the end of the anti-tensile cylinder away from the docking seat, the inner wall shape of the locking ring corresponds to the shape of the tapered section of the anti-tensile cylinder, and the locking ring is sleeved on the tapered section of the anti-tensile cylinder through threaded cooperation.

2. The AC cable assembly according to claim 1, characterized in that: The cable comprises a copper conductor, an insulating layer, a filling body and a tape layer in sequence from the inside to the outside.

3. The AC cable assembly according to claim 2, characterized in that: The outer surface of the cable is provided with a temperature-sensitive color-changing layer, and the color of the temperature-sensitive color-changing layer can change with the temperature of the cable.

4. The AC cable assembly according to claim 3, characterized in that: The thermochromic layer is formed by spraying the thermochromic coating directly on the wrapping layer.

5. The AC cable assembly according to claim 3, characterized in that: A sheath layer is also provided outside the thermochromic layer.

6. The AC cable assembly according to claim 5, characterized in that: The sheath layer is made of transparent material.

7. The AC cable assembly according to claim 1, characterized in that: A plurality of slots are evenly distributed on the circumferential side of the tapered section relative to the axis of the tension tube.

8. The AC power cable assembly according to claim 1, characterized in that: A sealing plug is provided between the inner side of the end of the locking ring away from the docking seat and the cable. The sealing plug is sleeved on the cable. A limiting platform is provided at the end of the sealing plug away from the docking seat. The diameter of the limiting platform is larger than the inner diameter of the locking ring.

9. The AC cable assembly according to claim 1, characterized in that: The lock ring is sleeved with an anti-slip sleeve.

10. A charging pile, characterized in that: An alternating current cable assembly comprising the embodiment of any one of claims 1 to 9.

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