Charging gun and charging pile

Abstract

The application provides a charging gun and a charging pile, and relates to the technical field of charging equipment. The charging gun comprises a cable and a gun head; the cable comprises a corrugated pipe and a plurality of core wires, the corrugated pipe is sleeved and fixed on the outer periphery of the plurality of core wires, one end of the plurality of core wires is used for connecting a power module of the charging pile, the other end of the plurality of core wires is electrically connected to the gun head, one end of the corrugated pipe is used for being fixed on a pile body of the charging pile, and the other end of the corrugated pipe is fixed in the gun head. The charging gun can reduce the bending stress when the charging gun is plugged and unplugged, and improve the structural reliability and service life of the charging gun.

Description

Technical Field

[0001] This application relates to the field of charging equipment technology, and in particular to a charging gun and a charging pile. Background Technology

[0002] As the core equipment for replenishing the energy supply of electric vehicles, charging piles transmit electrical energy by connecting the charging gun to the vehicle's charging interface. With the development of high-power fast charging technology, charging piles need to deliver higher currents in a short time to meet the demand for rapid energy replenishment, which places higher demands on the structural reliability of the charging gun.

[0003] However, current high-power charging guns suffer from insufficient cable flexibility due to factors such as thick wire diameter and high rigidity. This results in the charging pile and vehicle-side charging port being located on opposite sides of the vehicle (e.g., the charging pile is on the right and the vehicle-side charging port is on the left). When users need to plug and unplug the charging gun around the vehicle body and vehicle-side charging port, not only is it difficult to apply force due to cable twisting, but continuous bending stress is also formed at the connection between the cable and the gun head. Long-term use may lead to material fatigue or even breakage, reducing the user experience. Utility Model Content

[0004] This application provides a charging gun and a charging station. The charging gun and charging station can reduce the bending stress when the charging gun is plugged in and out, and improve the structural reliability and service life of the charging gun.

[0005] To achieve the above objectives, the embodiments of this application adopt the following technical solutions:

[0006] On one hand, this application provides a charging gun, which includes a cable and a gun head; the cable includes a corrugated tube and multiple core wires, the corrugated tube is sleeved and fixed to the outer periphery of the multiple core wires, one end of the multiple core wires is used to connect to the power module of the charging pile, the other end of the multiple core wires is electrically connected to the gun head, one end of the corrugated tube is used to fix to the pile body of the charging pile, and the other end of the corrugated tube is fixed inside the gun head.

[0007] In the charging gun disclosed in this application, a corrugated tube is fitted around the outer periphery of multiple core wires, with one end of the corrugated tube fixed to the charging pile body and the other end fixed inside the gun head. This means the connection between the cable and the gun head is achieved using a corrugated tube. Because the corrugated structure of the tube has high flexibility and elasticity, if the charging gun head needs to be moved or twisted during use, the bending load at the connection between the charging gun head and the cable can be absorbed by the expansion and contraction of the corrugated structure. This avoids stress concentration at the connection between the cable and the gun head, reduces the bending stress amplitude, and prevents the cable from cracking or breaking due to stress fatigue, thereby improving the structural reliability and service life of the charging gun.

[0008] In one embodiment, the cable further includes a sheath disposed inside a corrugated tube and sleeved around the periphery of a plurality of core wires; a portion of the sheath is located inside the nozzle, and another portion of the sheath extends outside the nozzle.

[0009] This application involves placing a sleeve around the outer periphery of multiple core wires and inserting the sleeve inside a corrugated tube. The sleeve enhances the radial structural support performance of the cable, preventing significant deformation when subjected to radial forces and improving structural reliability. Since part of the sleeve is inside the nozzle and the other part extends beyond it, when the nozzle and the cable's corrugated tube are fixed, the sleeve improves the internal structural strength of the cable if the connection is subjected to radial compression, preventing damage to the core wires inside the corrugated tube and protecting them.

[0010] In one embodiment, the sleeve has a first protrusion located at one end of the sleeve that extends into the nozzle, and the first protrusion extends from the outer wall of the sleeve in a direction away from the core wire; the end face of the corrugated tube that extends into the nozzle contacts the first protrusion.

[0011] With the above-described configuration, during the assembly of the corrugated tube and sleeve of the cable, the corrugated tube is first placed around the outer periphery of multiple core wires. Then, the sleeve is inserted from the end of the corrugated tube away from the charging pile into the space between the corrugated tube and the multiple core wires. The sleeve is pushed into the corrugated tube along its axial direction until the first protrusion on the sleeve contacts the end face of the corrugated tube near the first protrusion. In this way, the first protrusion on the sleeve can be used to position the sleeve in the assembly position between the corrugated tube and the multiple core wires, which is conducive to the quick installation of the sleeve.

[0012] In one embodiment, a first sealing ring or a first sealing layer is provided between the sleeve and the plurality of core wires; or, a second sealing ring or a second sealing layer is provided between the sleeve and the bellows.

[0013] This application, through the above-mentioned design, can prevent moisture or dust from entering the cable through the gap between the sleeve and the core wire or the gap between the sleeve and the corrugated tube, thereby improving the waterproof and dustproof performance of the charging gun and effectively preventing liquids or dust from entering the charging gun head or cable after the corrugated tube breaks after long-term use.

[0014] In one embodiment, the charging gun further includes a clamping structure, which includes a connector and two clamping members. The connector connects the two clamping members. Each clamping member includes a first part and a second part that are connected. The first part and the second part are arranged along the axial direction of the bellows. The first parts of the two clamping members are respectively located on the radial sides of the gun head and are in contact with the outer wall of the gun head. The second parts of the two clamping members are respectively located on the radial sides of the bellows and are in contact with the outer wall of the bellows.

[0015] With the above configuration, the first part of one clamping member and the first part of another clamping member cooperate with each other, and under the connecting and locking action of the connector, the gun head can be pressed onto the bellows, thereby fixing the gun head and the bellows and improving the sealing performance of the gun head and the bellows; the second part of one clamping member and the second part of another clamping member cooperate with each other, and under the connecting and locking action of the connector, the bellows can be pressed onto multiple core wires, thereby fixing the bellows and the core wires and improving the sealing performance of the bellows and the core wires.

[0016] In one embodiment, the charging gun has a receiving hole at the end near the cable, and one end of the cable extends into the receiving hole. The inner wall of the receiving hole has an annular groove, at least a portion of which is located between the first portions of the two clamping members. The charging gun also includes a third sealing ring disposed within the annular groove. The first portions of the two clamping members are used to press the charging gun and the third sealing ring against the outer periphery of the bellows.

[0017] Since at least a portion of the annular groove is located between the first portions of the two clamping members, when a third sealing ring is provided in the annular groove, at least a portion of the third sealing ring is located between the first portions of the two clamping members. The first portions of the two clamping members cooperate with each other to press the gun head and the third sealing ring against the outer periphery of the bellows, thereby improving the sealing performance of the gun head and the bellows.

[0018] In one embodiment, the wall surface of the first portion facing the bellows has a plurality of second protrusions, the plurality of second protrusions extending from the wall surface of the first portion facing the bellows toward the direction close to the bellows, and the plurality of second protrusions contacting the outer wall of the nozzle; or, the wall surface of the second portion facing the bellows has a plurality of third protrusions, the plurality of third protrusions extending from the wall surface of the second portion facing the bellows toward the direction close to the bellows, and the plurality of third protrusions contacting the outer wall of the bellows.

[0019] This application, by providing multiple second protrusions on the wall surface of the first part facing the bellows, increases the micro-roughness of the contact surface between the first part and the gun head, thereby increasing the contact area and enhancing the static friction between them. This prevents axial sliding of the clamping structure and the gun head under vibration or external force, reducing the risk of the gun head disengaging. Furthermore, the second protrusions also enhance local pressure, increasing the clamping force of the first part of the clamping structure and improving the sealing performance between the gun head and the bellows. Similarly, providing multiple third protrusions on the wall surface of the second part facing the bellows increases the contact area between the second part and the bellows, reducing the risk of the bellows disengaging and further improving the sealing performance between the core wire and the bellows.

[0020] In one embodiment, the charging gun further includes a protective sleeve fitted around the outer periphery of the bellows, a portion of which is located between the second part and the bellows, and another portion of which extends from the second part and extends in a direction away from the gun head; the second portion of the two clamps is used to press the protective sleeve against the outer periphery of the bellows.

[0021] This application provides a protective sleeve around the outer periphery of the bellows, with a portion of the sleeve positioned between the second part and the bellows. This protective sleeve protects the connection between the bellows and the nozzle, preventing cracks or breakage at the connection point due to excessive bending of the bellows, thus improving the reliability of the connection. Positioning a portion of the protective sleeve between the second part and the bellows allows the clamping force of the second part of the two clamping members to act on the protective sleeve, pressing it firmly against the outer periphery of the bellows and improving the tightness of the connection between the protective sleeve and the bellows.

[0022] In one embodiment, the wall surface of the second part facing the bellows also has a groove, and the portion of the protective sleeve located between the second part and the bellows has a fourth protrusion. The fourth protrusion is located at one end of the protective sleeve facing the gun head and extends from the outer wall of the protective sleeve in a direction away from the bellows; the fourth protrusion is engaged in the groove.

[0023] This application provides a fourth protrusion on the protective sleeve and a groove that matches the fourth protrusion in the second part of the clamping structure, so that the fourth protrusion is engaged in the groove. In this way, the clamping structure can clamp the bellows while pressing the protective sleeve against the outer periphery of the bellows, making the connection between the protective sleeve and the bellows tighter and thus providing better protection for the bellows.

[0024] In one embodiment, the protective sleeve has a plurality of through holes extending radially therethrough, the plurality of through holes being evenly distributed in the protective sleeve.

[0025] By incorporating multiple through-holes in the protective sleeve, the bending stress on the sleeve can be effectively dispersed when it is bent. The material between two adjacent through-holes forms a hinge-like weak area, distributing stress concentration points evenly from the overall structure to multiple localized points. This reduces the material's internal rigidity against deformation, improving the sleeve's bending performance and making it easier to bend in a specific direction. Furthermore, the material between two adjacent through-holes can be freely compressed or stretched during bending, reducing the risk of material wrinkling or breakage.

[0026] On the other hand, this application provides a charging pile, which includes a pile body, a power module and a charging gun as described in any of the above embodiments, wherein the corrugated tube of the charging gun's cable is fixed to the pile body and the core wire of the cable is connected to the power module.

[0027] Since the charging station includes the charging gun in any of the above embodiments, it can at least reduce the bending stress when the charging gun is plugged in and out, thereby improving the structural reliability and service life of the charging station. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of an application scenario for a charging pile provided in an embodiment of this application;

[0029] Figure 2 This is a schematic diagram illustrating another application scenario of a charging pile provided in an embodiment of this application;

[0030] Figure 3 This is a schematic diagram of the structure of a charging pile provided in an embodiment of this application;

[0031] Figure 4 This is one of the structural schematic diagrams of the charging gun provided in the embodiments of this application;

[0032] Figure 5 This is a second schematic diagram of the structure of the charging gun provided in the embodiments of this application;

[0033] Figure 6 for Figure 5 A cross-sectional view of the charging gun in the image;

[0034] Figure 7 for Figure 6 A magnified view of a section at point A in the middle;

[0035] Figure 8 This is a schematic diagram of the structure of the bellows provided in the embodiments of this application;

[0036] Figure 9 This is a schematic diagram of the sleeve structure provided in the embodiments of this application;

[0037] Figure 10 This is a schematic diagram of the clamping structure provided in the embodiments of this application;

[0038] Figure 11 for Figure 10 A schematic diagram of one of the clamping components in the clamping structure;

[0039] Figure 12 This is a schematic diagram of the structure of the third sealing ring provided in an embodiment of this application;

[0040] Figure 13 This is a schematic diagram of the structure of the protective sleeve provided in an embodiment of this application.

[0041] Figure label:

[0042] 100 - Charging pile; 101 - Charging host; 102 - Charging terminal; 200 - Electric vehicle; 300 - Power grid;

[0043] 10-Pile body;

[0044] 20-Charging gun;

[0045] 21-Cable; 211-Core wire; 212-Corrugated pipe; 213-Sheath; 2131-First protrusion;

[0046] 22-Gun tip; 221-Receiving hole; 222-Annular groove;

[0047] 30 - Clamping structure; 31 - Connector; 32 - Clamping element; 321 - First part; 3211 - Second protrusion; 322 - Second part; 3221 - Third protrusion; 3222 - Groove; 323 - Mounting hole;

[0048] 40 - Third sealing ring;

[0049] 50 - Protective sleeve; 51 - Fourth protrusion; 52 - Through hole;

[0050] 60-Power Module. Detailed Implementation

[0051] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0052] The terms "first," "second," and similar terms used in this article do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, "one" or similar terms do not indicate a quantity limitation, but rather indicate the existence of at least one.

[0053] In the embodiments of this application, the terms "example" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "example" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design solutions. Specifically, the use of terms such as "example" or "for example" is intended to present the relevant concepts in a specific manner. In the description of the embodiments of this application, unless otherwise stated, "a plurality of" means two or more.

[0054] Figure 1 This is a schematic diagram illustrating an application scenario of a charging pile 100 provided in an embodiment of this application. Figure 2 For another application scenario diagram of the charging pile 100 provided in this application embodiment, please refer to... Figure 1 and Figure 2This application provides a charging pile 100, which can be used to charge a device. The device to be charged is, for example, an electric vehicle 200, but it can also be any other device requiring charging. The charging pile 100 receives AC power from the power grid 300 and converts it into stable DC or AC power before supplying it to the electric vehicle 200 to charge it. Alternatively, the electric vehicle 200 can output electrical energy back to the power grid 300 through the charging pile 100.

[0055] For example, the charging pile 100 can be a split-type charging pile 100 or an integrated charging pile 100.

[0056] In some embodiments, such as Figure 1 As shown, the charging pile 100 is a split-type charging device. Specifically, the charging pile 100 includes a charging host 101, at least one charging terminal 102, and at least one charging gun 20. The charging host 101 is connected to each charging terminal 102, and at least one charging terminal 102 is connected to at least one charging gun 20. The head of each charging gun 20 is connected to the corresponding charging terminal 102 via a cable, and the head of each charging gun 20 is used to connect to an electric vehicle 200. In a specific implementation, for example, one charging terminal 102 is connected to one or more charging guns 20, and one or more charging guns 20 are connected to one electric vehicle 200.

[0057] The charging host 101 includes multiple power modules, which convert the AC power output from the grid 300 into stable DC or AC power before supplying it to the charging terminal 102. These power modules may include, for example, an AC-DC converter and a DC-DC converter. The charging terminal 102 supplies this stable DC or AC power to the electric vehicle 200 via a connected charging gun 20. The charging terminal 102 includes a charging pile 10, a human-machine interface, a charging control unit, and a metering and billing unit, and is used for information exchange, energy transfer, and metering and billing with the electric vehicle 200.

[0058] In other embodiments, such as Figure 2As shown, the charging pile 100 is an integrated charging device. For example, the human-machine interface, charging control unit, and metering and billing unit of the charging pile 100 are directly housed in the charging host 101. That is, the charging pile 100 includes the charging host 101 and at least one charging gun 20, wherein the head of the charging gun 20 is connected to the charging host 101 via a cable. In other words, the charging pile 100 does not include the charging terminal 102. In a specific implementation, multiple power modules in the charging host 101 convert the AC power output from the power grid 300 into stable DC or AC power, which is then transmitted to the electric vehicle 200 through the charging gun 20.

[0059] To meet the high-power transmission requirements of the charging pile 100, the cable diameter of the high-power charging gun 20 gradually increases, resulting in insufficient cable flexibility. When the charging pile 100 and the vehicle-side charging port of the electric vehicle 200 are located on opposite sides of the vehicle body (e.g., the charging pile 100 is on the right and the vehicle-side charging port is on the left), users need to bypass the vehicle body and the vehicle-side charging port to plug and unplug the charging gun 20. The cable twisting makes it difficult to apply force, and continuous bending stress is formed at the connection between the cable and the gun head. Long-term use may lead to material fatigue or even breakage, reducing the user experience. Therefore, this application proposes a new charging gun 20 and a charging pile 100 including the charging gun 20. By improving the structure of the charging gun 20, the charging pile 100 can reduce the bending stress during plugging and unplugging, improving the structural reliability and service life of the charging gun 20.

[0060] The following section will provide a detailed description and explanation of the specific structure of the charging gun 20 and the charging pile 100 containing the charging gun 20 provided in this application.

[0061] Figure 3 This is a schematic diagram of the structure of the charging pile 100 provided in the embodiment of this application. Figure 4 This is one of the structural schematic diagrams of the charging gun 20 provided in the embodiments of this application. Figure 5 This is a second structural schematic diagram of the charging gun 20 provided in the embodiments of this application, wherein, Figure 4 and Figure 5 Showing Figure 3 Partial structure of the charging gun 20 Figure 4 and Figure 5 The structure of the charging gun 20 is shown from different perspectives. Please refer to the reference. Figures 3 to 5 As shown, the charging pile 100 includes a pile body 10, a power module 60, and a charging gun 20. The charging gun 20 includes a cable 21 and a gun head 22. One end of the cable 21 is connected to the power module 60, and the other end of the cable 21 is connected to the gun head 22.

[0062] When the charging pile 100 is a split-type charging device, the pile body 10 is part of the charging terminal; when the charging pile 100 is an integrated charging device, the pile body 10 is part of the charging host.

[0063] Figure 6 for Figure 5 A cross-sectional view of the charging gun 20 in the middle. Figure 7 for Figure 6 Please refer to the enlarged view of point A in the middle. Figure 6 and Figure 7 As shown, the cable 21 includes a corrugated tube 212 and multiple core wires 211. The corrugated tube 212 is sleeved and fixed to the outer periphery of the multiple core wires 211, and one end of the multiple core wires 211 is used for connection. Figure 3 The power module 60 of the charging pile 100 has multiple core wires 211, the other end of which is electrically connected to the gun head 22. One end of the corrugated pipe 212 is used to fix it to the pile body 10 of the charging pile 100, and the other end of the corrugated pipe 212 is fixed inside the gun head 22.

[0064] In this design, the corrugated tube 212 of cable 21 is fixed to the pile body 10, and the core wire 211 of cable 21 is connected to the power module 60 inside the pile body 10. The core wire 211 serves as a carrier for the transmission of electrical energy and signals in the charging gun 20, used to transfer electrical energy and transmit signals between the power module 60 and the gun head 22. For example, the core wire 211 includes a power wire, a signal wire, and a ground wire.

[0065] The corrugated tube 212 is sleeved on the outer periphery of the plurality of core wires 211. For example, a filling layer is provided between the plurality of core wires 211 and between the core wires 211 and the corrugated tube 212. The filling layer is used to fill the gap between two adjacent core wires 211 and the gap between the core wires 211 and the corrugated tube 212, so as to avoid friction damage inside the cable 21 when the cable 21 is dragged.

[0066] For example, the filler layer material may be foamed polyethylene, which has a lightweight porous structure that can buffer mechanical stress and reduce the overall weight of the cable 21; or, the filler layer material may be thermoplastic elastomer, a highly elastic material that can resist bending deformation and improve the flexibility of the cable 21 when used to fill the gaps between the core wires 211; or, the filler layer material may be fiber filaments, where the fiber network can restrain the movement of the core wires 211, reduce friction and collision between the core wires 211 during dragging, and reduce the risk of short circuits caused by wear of the conductor insulation layer of the core wires 211. It should be understood that the above-mentioned filler layer materials are merely examples and are not specific limitations on the filler materials of this application.

[0067] Figure 8 This is a schematic diagram of the structure of the bellows 212 provided in the embodiments of this application, as shown below. Figure 8As shown, the corrugated pipe 212 is a tubular structure formed by connecting foldable corrugated sheets along the folding and stretching direction. The corrugated pipe 212 consists of corrugated sections composed of alternating crests and troughs, and is manufactured through integral molding or welding processes. The corrugated pipe 212, through its corrugated section design, possesses axial extensibility, radial flexibility, and bending resistance.

[0068] In this application, a corrugated tube 212 is fitted around the radial outer periphery of multiple core wires 211. Thus, when the charging gun 20 needs to move or twist the cable 21 during use, causing the connection between the gun head 22 and the cable 21 to bear a bending load, the corrugated structure of the corrugated tube 212 (composed of foldable corrugated sheets) has high flexibility and elasticity. It can absorb bending energy through the expansion and contraction deformation of the corrugated structure, avoiding stress concentration at the connection between the cable 21 and the gun head 22 or at a certain part of the cable 21. This reduces the bending stress amplitude and prevents the cable 21 from cracking or breaking due to stress fatigue, thereby improving the structural reliability and service life of the charging gun 20.

[0069] Figure 9 This is a schematic diagram of the structure of the sleeve 213 provided in the embodiments of this application. Please refer to the following: Figures 7 to 9 In one embodiment, the cable 21 further includes a sleeve 213, which is disposed inside the corrugated pipe 212 and sleeved around the periphery of the plurality of core wires 211; a portion of the sleeve 213 is located inside the gun head 22, and another portion of the sleeve 213 extends out of the gun head 22.

[0070] The sleeve 213 has a tubular structure. That is, in addition to the core wires 211 and the corrugated tube 212, the cable 21 of this application also includes a sleeve 213 with a tubular structure. In this application, the sleeve 213 is sleeved around the outer periphery of the multiple core wires 211 and passes through the corrugated tube 212. In this way, the sleeve 213 can improve the radial structural support performance of the cable 21, and can prevent the cable 21 from undergoing large deformation when subjected to radial external force, thereby improving the structural reliability of the cable 21.

[0071] Since part of the sleeve 213 is located inside the gun head 22 and the other part extends outside the gun head 22, that is, the sleeve 213 is located at least at the connection between the gun head 22 and the cable 21. Thus, when the corrugated tube 212 of the gun head 22 and the cable 21 is fixed, if the connection between the gun head 22 and the cable 21 is subjected to radial compression, the sleeve 213 can improve the internal structural strength of the cable 21 to a certain extent, avoid damage to the core wire 211 inside the corrugated tube 212, and play a role in protecting the core wire 211.

[0072] For example, the axial dimension of the sleeve 213 is smaller than the axial dimension of the bellows 212. A portion of the sleeve 213 is located inside the gun head 22, and another portion extends outside the gun head 22. The axial dimension of the portion extending outside the gun head 22 is smaller than the axial dimension of the bellows 212 extending outside the gun head 22. Thus, the sleeve 213 is located at the connection between the gun head 22 and the cable 21. At least a portion of the bellows 212 extending outside the gun head 22 is not fitted with the sleeve 213. This satisfies the need to protect the core wire 211 when the connection between the gun head 22 and the cable 21 is subjected to radial compression, while also saving material and increasing the flexibility of the rest of the cable 21 to facilitate the movement or twisting of the cable 21.

[0073] It should be understood that the fact that the axial dimension of the sleeve 213 is smaller than that of the bellows 212 is merely an example and not a limitation of this application. In some application scenarios, the axial dimension of the sleeve 213 is the same as or approximately the same as that of the bellows 212.

[0074] In one embodiment, the sleeve 213 has a first protrusion 2131, which is located at one end of the sleeve 213 that extends into the gun head 22, and the first protrusion 2131 extends from the outer wall of the sleeve 213 in a direction away from the core wire 211; the end face of the corrugated tube 212 that extends into the gun head 22 contacts the first protrusion 2131.

[0075] That is, the outer wall of the sleeve 213 is provided with a first protrusion 2131 extending in a direction away from the core wires 211. The first protrusion 2131 is located at the end of the sleeve 213 that extends into the gun head 22. Thus, when assembling the corrugated tube 212 and the sleeve 213 of the cable 21, the corrugated tube 212 is first sleeved on the outer periphery of the multiple core wires 211, and then the sleeve 213 is inserted from the end of the corrugated tube 212 away from the pile body 10 of the charging pile 100 into the corrugated tube 212 and the multiple core wires 211. Between the core wires 211, the sleeve is pushed into the corrugated tube 212 along the axial direction of the corrugated tube 212 until the first protrusion 2131 on the sleeve 213 contacts the end face of the corrugated tube 212 near the first protrusion 2131. In this way, the first protrusion 2131 on the sleeve 213 can be used to position the sleeve 213 in the assembly position between the corrugated tube 212 and the multiple core wires 211, which is conducive to the quick installation of the sleeve 213.

[0076] For example, such as Figure 9 As shown, the first protrusion 2131 is located at one end edge of the sleeve 213. Thus, during the processing of the sleeve 213, only a folded edge needs to be processed at the edge of the sleeve 213, which facilitates the processing and preparation of the first protrusion 2131.

[0077] Among them, such as Figure 9As shown, the first protrusion 2131 can be an annular structure surrounding the outer periphery of the sleeve 213; the first protrusion 2131 can also be one or more protrusion structures provided on the outer wall of the sleeve 213. That is, this application does not limit the specific structure of the first protrusion 2131, as long as the first protrusion 2131 can axially limit the bellows 212 when it is assembled.

[0078] In one embodiment, a first sealing ring or a first sealing layer is provided between the sleeve 213 and the plurality of core wires 211. For example, the first sealing layer is achieved by applying adhesive between the sleeve 213 and the plurality of core wires 211. By providing a first sealing ring or a first sealing layer between the sleeve 213 and the plurality of core wires 211, this application can prevent moisture or dust from entering the cable 21 through the gaps between the sleeve 213 and the core wires 211, thereby improving the waterproof and dustproof performance of the charging gun 20 and effectively preventing liquids or dust from entering the charging gun head 22 or the cable 21 after the corrugated tube 212 breaks after prolonged use.

[0079] A second sealing ring or a second sealant layer is provided between the sleeve 213 and the bellows 212. For example, the second sealant layer is achieved by applying adhesive between the sleeve 213 and the bellows 212. By providing a second sealing ring or a second sealant layer between the sleeve 213 and the bellows 212, this application can prevent moisture or dust from entering the cable 21 through the gaps between the sleeve 213 and the bellows 212, thereby improving the waterproof and dustproof performance of the charging gun 20.

[0080] Figure 10 This is a schematic diagram of the clamping structure 30 provided in the embodiments of this application. Please refer to the following: Figure 7 and Figure 10 In one embodiment, the charging gun 20 further includes a clamping structure 30, which includes a connector 31 and two clamping members 32. The connector 31 connects the two clamping members 32. The two clamping members 32 are arranged radially along the cable 21, with one clamping member 32 located on one side of the radial direction of the cable 21 and the other clamping member 32 located on the other side of the radial direction of the cable 21. The two clamping members 32 are connected and fixed by the connector 31 to radially clamp the gun head 22 and the cable 21.

[0081] Figure 10 Two clamping members 32 are shown in the figure. The two clamping members 32 are in Figure 10 Arranged vertically in the indicated orientation. Figure 11 for Figure 10 A schematic diagram of one of the clamping members 32 in the clamping structure 30 is shown below. Please refer to the diagram for details. Figure 7 and Figure 11Each clamping member 32 includes a first part 321 and a second part 322 connected together. The first part 321 and the second part 322 are arranged along the axial direction of the bellows 212. The first part 321 of the two clamping members 32 is respectively located on the radial sides of the gun head 22 and is in contact with the outer wall of the gun head 22. The second part 322 of the two clamping members 32 is respectively located on the radial sides of the bellows 212 and is in contact with the outer wall of the bellows 212.

[0082] The first parts 321 of the two clamping members 32 are located on the radial sides of the gun head 22 and contact the outer wall of the gun head 22. In this way, the first parts 321 of one clamping member 32 and the first parts 321 of the other clamping member 32 cooperate with each other. Under the connection and locking action of the connecting member 31, the gun head 22 can be pressed against the bellows 212, thereby fixing the gun head 22 and the bellows 212 and improving the sealing performance of the gun head 22 and the bellows 212.

[0083] The second parts 322 of the two clamping members 32 are located on the radial sides of the bellows 212 and contact the outer wall of the bellows 212. In this way, the second parts 322 of one clamping member 32 and the second parts 322 of the other clamping member 32 cooperate with each other. Under the connecting and locking action of the connecting member 31, the bellows 212 can be pressed onto multiple core wires 211, thereby fixing the bellows 212 and the core wires 211 and improving the sealing performance of the bellows 212 and the core wires 211.

[0084] For example, the connector 31 is a screw. Each of the two clamping members 32 has a mounting hole 323. The connector 31 is screwed into the mounting holes 323 of the two clamping members 32 to fix the two clamping members 32. For example, both mounting holes 323 of the two clamping members 32 are through holes; or, in one of the two clamping members 32, the mounting hole 323 of one clamping member 32 is a through hole, while the mounting hole 323 of the other clamping member 32 is a blind hole, such as... Figure 10 As shown.

[0085] In addition, the connector 31 may include only one or two. When the connector 31 includes two, each clamping member 32 is provided with two corresponding mounting holes 323, and the two mounting holes 323 are evenly distributed on the clamping member 32.

[0086] In one embodiment, the end of the nozzle 22 near the cable 21 has a receiving hole 221 for one end of the cable 21 to extend into. The diameter of the receiving hole 221 is set according to the radial dimension of the cable 21, and this application does not impose specific limitations.

[0087] The inner wall of the receiving hole 221 is provided with an annular groove 222, at least a portion of which is located between the first portions 321 of the two clamping members 32. The charging gun 20 also includes a third sealing ring 40, which is disposed in the annular groove 222. The first portions 321 of the two clamping members 32 are used to press the gun head 22 and the third sealing ring 40 against the outer periphery of the bellows 212.

[0088] Since at least a portion of the annular groove 222 is located between the first portions 321 of the two clamping members 32, when the third sealing ring 40 is provided in the annular groove 222, at least a portion of the third sealing ring 40 is located between the first portions 321 of the two clamping members 32. The first portions 321 of the two clamping members 32 cooperate with each other to press the gun head 22 and the third sealing ring 40 against the outer periphery of the bellows 212, thereby improving the sealing performance of the gun head 22 and the bellows 212.

[0089] Figure 12 This is a schematic diagram of the structure of the third sealing ring 40 provided in the embodiments of this application, in conjunction with reference to... Figure 7 and Figure 12 As shown, the outer and / or inner wall surfaces of the third sealing ring 40 are provided with spaced protrusions and grooves, or in other words, the outer and / or inner wall surfaces of the third sealing ring 40 are wavy. This increases the contact area between the third sealing ring 40 and the nozzle 22 or the bellows 212, which is beneficial for improving sealing performance.

[0090] In one embodiment, in conjunction with reference to Figure 7 and Figure 11 As shown, the wall surface of the first part 321 facing the bellows 212 has a plurality of second protrusions 3211. The plurality of second protrusions 3211 extend from the wall surface of the first part 321 facing the bellows 212 toward the direction close to the bellows 212. The plurality of second protrusions 3211 are in contact with the outer wall of the gun head 22.

[0091] The second protrusion 3211 is disposed on the side of the first part 321 of each clamping member 32 facing the bellows 212. The multiple second protrusions 3211 are arranged at intervals. In order to make the multiple second protrusions 3211 apply a relatively balanced force to the gun head 22, the multiple second protrusions 3211 are evenly distributed on the side of the first part 321 of the clamping member 32 facing the bellows 212.

[0092] This application, by providing multiple second protrusions 3211 on the wall surface of the first portion 321 facing the bellows 212, can increase the contact area between the first portion 321 and the gun head 22 by increasing the micro-roughness of the contact surface, thereby enhancing the static friction between the first portion 321 and the gun head 22. This prevents axial sliding between the clamping structure 30 and the gun head 22 under vibration or external force, reducing the risk of the gun head 22 disengaging. Furthermore, the second protrusions 3211 can also enhance local pressure, increasing the clamping force of the first portion 321 of the clamping structure 30, which is beneficial for improving the sealing performance between the gun head 22 and the bellows 212.

[0093] Similarly, the second part 322 of the clamping member 32 has a plurality of third protrusions 3221 on the wall surface facing the bellows 212. The plurality of third protrusions 3221 extend from the wall surface of the second part 322 toward the bellows 212 toward the direction close to the bellows 212, and the plurality of third protrusions 3221 are in contact with the outer wall of the bellows 212.

[0094] The third protrusion 3221 is disposed on the side of the second part 322 of each clamping member 32 facing the bellows 212. For example, the multiple third protrusions 3221 are spaced apart and evenly disposed, so that the multiple third protrusions 3221 can apply a relatively balanced force to the bellows 212, so that the bellows 212 is subjected to balanced force.

[0095] This application provides multiple third protrusions 3221 on the wall surface of the second part 322 facing the bellows 212. By increasing the micro-roughness of the contact surface between the second part 322 and the bellows 212, the contact area between the second part 322 and the bellows 212 is increased, thereby improving the static friction between the second part 322 and the bellows 212. This prevents the clamping structure 30 and the bellows 212 from sliding axially under vibration or external force, and reduces the risk of the bellows 212 coming off the clamp.

[0096] The third protrusion 3221 can also enhance local pressure and increase the clamping force of the second part 322 of the clamping structure 30, which is beneficial to improving the sealing performance between the core wire 211 and the bellows 212.

[0097] in, Figure 10 and Figure 11 The positions and structures of the second protrusion 3211 and the third protrusion 3221 shown are merely examples. This application does not specify the exact positions, quantities, or shapes of the second protrusion 3211 and the third protrusion 3221; these will be determined based on the actual application scenario. For example, the plurality of second protrusions 3211 on the first part 321 form a serrated structure, and the plurality of third protrusions 3221 on the second part 322 also form a serrated structure.

[0098] Figure 13 This is a schematic diagram of the structure of the protective sleeve 50 provided in the embodiments of this application. Please refer to the following: Figure 7 and Figure 13 As shown, in one embodiment, the charging gun 20 further includes a protective sleeve 50 sleeved around the outer periphery of the bellows 212. A portion of the protective sleeve 50 is located between the second portion 322 and the bellows 212, and another portion of the protective sleeve 50 extends out of the second portion 322 and extends in a direction away from the gun head 22. The second portion 322 of the two clamping members 32 is used to press the protective sleeve 50 against the outer periphery of the bellows 212.

[0099] For example, the protective sleeve 50 is made of a material with a certain degree of flexibility and deformation capability, such as rubber. In this way, the protective sleeve 50 can fit closely to the outer wall texture of the corrugated pipe 212, providing better protection for the corrugated pipe 212.

[0100] This application provides a protective sleeve 50 around the outer periphery of the bellows 212, with a portion of the protective sleeve 50 positioned between the second portion 322 and the bellows 212. This protective sleeve 50 protects the connection between the bellows 212 and the nozzle 22, preventing cracks or breakage at the connection due to excessive bending of the bellows 212, thus improving the reliability of the connection. Positioning a portion of the protective sleeve 50 between the second portion 322 and the bellows 212 allows the clamping force of the second portion 322 of the two clamping members 32 to act on the protective sleeve 50, pressing it firmly against the outer periphery of the bellows 212 and improving the tightness of the connection between the protective sleeve 50 and the bellows 212.

[0101] In one embodiment, the wall surface of the second portion 322 facing the bellows 212 also has a groove 3222, and the portion of the protective sleeve 50 located between the second portion 322 and the bellows 212 has a fourth protrusion 51. The fourth protrusion 51 is located at one end of the protective sleeve 50 facing the gun head 22, and the fourth protrusion 51 extends from the outer wall of the protective sleeve 50 in a direction away from the bellows 212; the fourth protrusion 51 is engaged in the groove 3222.

[0102] The shapes of the fourth protrusion 51 and the groove 3222 are adapted, wherein the specific shapes of the fourth protrusion 51 and the groove 3222 are not limited, for example, as Figure 13 As shown, the fourth protrusion 51 is ring-shaped, as... Figure 10 As shown, the grooves 3222 on the second part 322 of the two clamping members 32 cooperate to form an annular groove 3222. Of course, Figure 10 Groove 3222 and Figure 13The structural form of the fourth protrusion 51 is merely an example and is not intended to limit the scope of this application. In other embodiments, the fourth protrusion 51 is one or more protrusions located on the outer periphery of the protective sleeve 50, and the groove 3222 of the clamping structure 30 includes one or more grooves 3222 that are adapted to the fourth protrusion 51.

[0103] This application provides a fourth protrusion 51 on the protective sleeve 50, and a groove 3222 that matches the fourth protrusion 51 is provided in the second part 322 of the clamping structure 30, so that the fourth protrusion 51 is engaged in the groove 3222. In this way, the clamping structure 30 can press the protective sleeve 50 against the outer periphery of the bellows 212 while clamping the bellows 212, so that the connection between the protective sleeve 50 and the bellows 212 is tighter, thereby providing better protection for the bellows 212.

[0104] For example, such as Figure 13 As shown, the protective sleeve 50 has multiple through holes 52 extending radially through it, and these through holes 52 are evenly distributed throughout the protective sleeve 50. Thus, when the protective sleeve 50 is bent under stress, the multiple through holes 52 can effectively disperse the bending stress. The material between two adjacent through holes 52 forms a hinge-like weak area, causing the stress concentration point to be evenly distributed from the whole to multiple local points, thereby reducing the rigidity of the material's internal resistance to deformation, improving the bending performance of the protective sleeve 50, and making it easier to bend the protective sleeve 50 in a specific direction. In other words, the design of the protective sleeve 50 not only facilitates the inclusion of the cable 21 but also reduces the bending stress of the charging gun 20 during insertion and removal, reducing the torsional force of the cable 21, making it easier for users to move or insert / remove the charging gun 20 with less effort, and improving the user experience. Furthermore, the material between two adjacent through holes 52 can be freely compressed or stretched during bending, reducing the risk of material wrinkling or breakage.

[0105] In some examples, such as Figure 13 As shown, the through hole 52 extends a certain dimension circumferentially along the protective sleeve 50, meaning the circumferential dimension of the through hole 52 is greater than its axial dimension. Alternatively, the through hole 52 can be described as an elliptical or oblong hole, where the major axis of the through hole 52 extends circumferentially along the protective sleeve 50, and the minor axis extends axially along the protective sleeve 50. This creates a longer, continuous weak band circumferentially around the protective sleeve 50, allowing bending stress to be released preferentially in a specific direction. This guides the protective sleeve 50 to bend naturally along a preset plane (a plane perpendicular to the axis of the through hole 52), preventing localized stress overload caused by random deformation.

[0106] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples. The above description is merely a specific embodiment of this application, but the scope of protection of this application 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 application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A charging gun, characterized in that, The device includes a cable and a charging head. The cable includes a corrugated tube and multiple core wires. The corrugated tube is sleeved and fixed to the outer periphery of the multiple core wires. One end of the multiple core wires is used to connect to the power module of the charging pile, and the other end of the multiple core wires is electrically connected to the charging head. One end of the corrugated tube is used to fix to the pile body of the charging pile, and the other end of the corrugated tube is fixed inside the charging head.

2. The charging gun of claim 1, wherein, The cable also includes a sleeve, which is disposed inside the corrugated pipe and sleeved around the periphery of the plurality of core wires; a portion of the sleeve is located inside the gun head, and another portion of the sleeve extends outside the gun head.

3. The charging gun of claim 2, wherein, The sleeve has a first protrusion located at one end of the sleeve that extends into the gun head, and the first protrusion extends from the outer wall of the sleeve in a direction away from the core wire; the end face of the corrugated tube that extends into the gun head contacts the first protrusion.

4. The charging gun according to claim 2 or 3, characterized in that, A first sealing ring or a first sealing adhesive layer is provided between the sleeve and the plurality of core wires; or, a second sealing ring or a second sealing adhesive layer is provided between the sleeve and the corrugated pipe.

5. The charging gun according to any one of claims 1-4, characterized in that, The charging gun also includes a clamping structure, which includes a connector and two clamping members. The connector connects the two clamping members. Each clamping member includes a first part and a second part that are connected. The first part and the second part are arranged along the axial direction of the bellows. The first parts of the two clamping members are respectively located on the radial sides of the gun head and are in contact with the outer wall of the gun head. The second parts of the two clamping members are respectively located on the radial sides of the bellows and are in contact with the outer wall of the bellows.

6. The charging gun of claim 5, wherein, The gun head has a receiving hole at one end near the cable, and one end of the cable extends into the receiving hole. The inner wall of the receiving hole is provided with an annular groove, and at least a portion of the annular groove is located between the first portions of the two clamping members. The charging gun also includes a third sealing ring, which is disposed in the annular groove. The first part of the two clamping members is used to press the gun head and the third sealing ring against the outer periphery of the bellows.

7. The charging gun according to claim 5 or 6, characterized in that, The first part has a plurality of second protrusions on the wall surface facing the bellows. The plurality of second protrusions extend from the wall surface facing the first part towards the bellows in a direction close to the bellows. The plurality of second protrusions are all in contact with the outer wall of the gun head. Alternatively, the second portion of the wall facing the bellows has a plurality of third protrusions, the plurality of third protrusions extending from the wall of the second portion toward the bellows toward the direction of approaching the bellows, and the plurality of third protrusions contacting the outer wall of the bellows.

8. The charging gun according to any one of claims 5-7, characterized in that, The charging gun also includes a protective sleeve fitted around the outer periphery of the bellows. A portion of the protective sleeve is located between the second part and the bellows, and another portion of the protective sleeve extends out from the second part and extends in a direction away from the gun head. The second portion of the two clamping members is used to press the protective sleeve onto the outer periphery of the bellows.

9. The charging gun of claim 8, wherein, The second part further has a groove facing the wall of the bellows, and the part between the second part and the bellows has a fourth protrusion, which is arranged at the end of the protective sleeve facing the gun head and extends from the outer wall of the protective sleeve away from the bellows. The fourth protrusion is clamped in the groove.

10. The charging gun according to claim 8 or 9, characterized in that, The protective sleeve has a plurality of through holes along the radial direction, which are uniformly distributed on the protective sleeve.

11. A charging post, characterized in that The charging gun comprises the pile body, the power module, and the charging gun of any one of claims 1-10, the bellows of the cable of the charging gun is fixed to the pile body, and the core wire of the cable is connected to the power module.

Images