Gun line gravity balancing device for charging pile and charging pile

Abstract

The application provides a gun line gravity balancing device for a charging pile and the charging pile, and relates to the technical field of charging piles. The gun line gravity balancing device comprises a base, a connecting rod and a driving mechanism. The base is used for fixing to a pile body of the charging pile. The connecting rod is rotationally connected to the base and is used for fixing a cable of a charging gun of the charging pile. The driving mechanism is connected to the connecting rod and is used for driving the connecting rod to rotate. In the case that the gun line gravity balancing device is not connected to an electric vehicle and the gun line gravity balancing device is in an initial state, the included angle between the connecting rod and a horizontal plane is a first included angle. In the case that the gun line gravity balancing device is connected to the electric vehicle, the included angle between the connecting rod and the horizontal plane is a second included angle. The first included angle is greater than the second included angle. The gun line gravity balancing device can balance the gravity of the cable and reduce the stress borne by the metal PIN needle.

Description

Technical Field

[0001] This application relates to the field of charging pile technology, and in particular to a gun line gravity balancing device for charging piles and a charging pile. Background Technology

[0002] Charging stations are a crucial infrastructure for the power supply of electric vehicles. Their core function is to provide a stable power supply to the vehicle's battery through dedicated cables and interfaces. With the rapid popularization of new energy vehicles, charging stations have been widely deployed in urban public parking lots, residential communities, transportation hubs, and highway service areas, becoming a key infrastructure for promoting green transportation and energy transformation.

[0003] Despite the increasing maturity of charging pile technology, its charging guns still have significant shortcomings in practical applications. For example, during the charging process, the charging gun head and cable of existing charging piles are prone to sagging due to their own weight because they lack an effective gravity balance design. Over long-term use, the weight of the cable and gun head continuously acts on the metal pins of the vehicle's charging port, causing the pins to bear additional mechanical stress. This problem can easily lead to accelerated wear and even structural deformation of the pins, affecting charging stability and equipment lifespan. Utility Model Content

[0004] This application provides a cable gravity balancing device and a charging pile for use in charging piles. The cable gravity balancing device and the charging pile can balance the weight of the cable and reduce the stress on the metal pins of the charging port at the vehicle end during the charging process.

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

[0006] On one hand, this application provides a cable balancing device for charging piles. The device includes a base, a connecting rod, and a drive mechanism. The base is fixed to the charging pile body, the connecting rod is rotatably connected to the base, and the connecting rod is used to fix the cable of the charging gun of the charging pile. The drive mechanism is connected to the connecting rod and is used to drive the connecting rod to rotate. When the cable balancing device is not connected to an electric vehicle and is in its initial state, the angle between the connecting rod and the horizontal plane is a first angle; when the cable balancing device is connected to an electric vehicle, the angle between the connecting rod and the horizontal plane is a second angle; wherein the first angle is greater than the second angle.

[0007] In the charging cable gravity balancing device provided in this application, through the above-mentioned structural arrangement, when the charging cable gravity balancing device rotates from the initial state (hereinafter referred to as the initial state state) when it is not connected to the electric vehicle and is in the initial state state to the state when it is connected to the electric vehicle (hereinafter referred to as the working state state), since the angle between the connecting rod of the charging cable gravity balancing device in the initial state state and the horizontal plane is greater than the angle between the connecting rod of the charging cable gravity balancing device in the working state state and the horizontal plane, that is, the connecting rod in the initial state state is closer to being vertical than in the working state state, the process of the connecting rod moving from the working state state state to the initial state state state is a process of the connecting rod gradually moving from being nearly horizontal to being nearly vertical. Therefore, the movement of the connecting rod can drive the connection between the connecting rod and the cable to move upward, thereby lifting the cable, so that part of the weight of the charging gun is absorbed by the connecting rod and the drive mechanism, which can improve the gravity balancing effect of the charging cable gravity balancing device on the charging gun.

[0008] When the cable balancing device moves from its initial state to its operating state, the angle between the connecting rod and the horizontal plane in the operating state is smaller than that in the initial state. This means the connecting rod is closer to a horizontal position in the operating state compared to the initial state. The process of the connecting rod moving from a near-vertical position to a near-horizontal position is a gradual transition. Therefore, this movement reduces the tension on the cable. When the charging nozzle is inserted into the vehicle's charging port (at which point the cable balancing device is connected to the electric vehicle, i.e., in its operating state), the tension on the cable and the charging nozzle is reduced. This improves the resistance to damage to the metal pins in the vehicle's charging port during insertion, thus enhancing the charging stability and reliability of the charging station.

[0009] In one embodiment of this application, the gun wire gravity balancing device further includes a first connecting plate and a second connecting plate, both of which are fixed to the base. The first connecting plate and the second connecting plate have an included angle, and a connecting rod is located between the first connecting plate and the second connecting plate. When the gun wire gravity balancing device is not connected to the electric vehicle and is in its initial state, the connecting rod abuts against the first connecting plate. When the gun wire gravity balancing device is connected to the electric vehicle, the connecting rod abuts against the second connecting plate.

[0010] With the above-described configuration, when the connecting rod moves from the working state of the gun wire gravity balancing device to the initial state of the gun wire gravity balancing device, the connecting rod abuts against the first connecting plate. The first connecting plate can limit the continued rotation of the connecting rod, keeping it in the initial state. When the connecting rod moves from the initial state to the working state, it abuts against the second connecting plate. The second connecting plate can also limit the continued rotation of the connecting rod, keeping it in the working state. By setting the first and second connecting plates, this application can limit the movement of the connecting rod, making its rotation more reliable.

[0011] In one embodiment of this application, when the gun wire gravity balancing device is connected to an electric vehicle, the angle between the connecting rod and the horizontal plane is 0° to 30°.

[0012] This application enables the angle between the connecting rod and the horizontal plane of the cable gravity balancing device in the working state to be 0° to 30°. When in the charging state, the angle between the connecting rod and the horizontal plane is small, which can reduce the upward tension applied to the cable by the connecting rod, thereby reducing the upward tensile stress on the charging head. Therefore, during the charging process, it can avoid or reduce the pulling damage to the PIN pins in the charging port of the vehicle caused by the upward tensile stress on the charging head.

[0013] In one embodiment of this application, when the gun wire gravity balancing device is not connected to the electric vehicle and the gun wire gravity balancing device is in its initial state, the angle between the connecting rod and the horizontal plane is 60° to 90°.

[0014] This application ensures that the angle between the connecting rod and the horizontal plane in the initial state of the charging gun gravity balancing device is 60° to 90°. When the device is not charging, the larger angle between the connecting rod and the horizontal plane allows the connecting rod to pull the charging gun cable upward, making the cable approximately folded. This achieves a better gravity balancing effect, reducing the possibility of the charging gun cable or gun head dragging on the ground. This improves the phenomenon of cable sheath wear and even internal insulation layer rupture caused by long-term cable friction, helps maintain the appearance integrity of the charging gun, reduces the risk of leakage, and increases the service life of the charging gun.

[0015] In one embodiment of this application, the driving mechanism includes a hydraulic rod, one end of which is rotatably connected to a connecting rod, and the other end of which is rotatably connected to a base.

[0016] The drive mechanism of this application adopts a hydraulic rod, which can convert external pressure into linear support force through Pascal's principle, so that the connecting rod and the cable fixed on it are kept in the initial state or the working state of the gun wire gravity balance device. It can also automatically adjust the output thrust according to the load change of the connecting rod (such as the downward force applied to the connecting rod by the user or other impact load changes), and can still stably support and achieve position locking under load changes.

[0017] In one embodiment of this application, the driving mechanism further includes a coil spring, one end of which is fixedly connected to the connecting rod, and the other end of which is fixedly connected to the base; the coil spring is used to drive the connecting rod to rotate.

[0018] With the above-described configuration, when the connecting rod rotates from the initial state to the working state of the gun wire gravity balancing device, the connecting rod drives the coil spring to move and store energy; when the coil spring releases energy, it generates a force that drives the connecting rod to rotate from the working state back to the initial state. That is, the coil spring stores energy when the connecting rod moves from the initial state to the working state, and releases energy when the connecting rod moves from the working state to the initial state. This application, by incorporating the coil spring, can accelerate the return of the connecting rod from the working state to the initial state, thereby accelerating the return of the gun and improving the user experience.

[0019] In one embodiment of this application, the driving mechanism includes a solenoid valve and a fluid power cylinder. The fluid power cylinder is fixed on the base and connected to the solenoid valve. The fluid power cylinder includes a cylinder body and a piston. A portion of the piston is located inside the cylinder body and can slide relative to the cylinder body. Another portion of the piston extends outside the cylinder body. The portion of the piston outside the cylinder body is rotatably connected to a connecting rod. The fluid passage of the solenoid valve is in communication with the cylinder body. The solenoid valve is used to drive the piston to slide inside the cylinder body.

[0020] When the drive mechanism of this application adopts this structure, the connecting rod can be driven by controlling the on and off of the solenoid valve, so that the connecting rod rotates from the initial state of the gun line gravity balancing device to the working state of the gun line gravity balancing device, or rotates from the working state to the initial state.

[0021] In one embodiment of this application, the driving mechanism includes a motor and a gear set. The motor is fixed on the base, the output end of the motor is connected to the input end of the gear set, and the output end of the gear set is connected to the connecting rod. The motor is used to drive the connecting rod to rotate through the gear set.

[0022] This application incorporates a motor and a gear set. The motor drives the gear set to rotate, which in turn drives the connecting rod to rotate, thus enabling the connecting rod to switch between its working state and its initial state in the gun line gravity balancing device. The drive mechanism of this application, employing a combination of a motor and a gear set, achieves high-precision drive, and is compact, efficient, and relatively simple to maintain.

[0023] In one embodiment of this application, the connecting rod includes a main body section and a telescopic section. A portion of the telescopic section is located inside the main body section, and another portion extends outside the main body section. The telescopic section is slidable relative to the main body section. The main body section is connected to the drive mechanism, and the telescopic section is used to fix the cable of the charging gun.

[0024] This application designs the connecting rod as consisting of a main body and a telescopic section (i.e., the connecting rod is telescopic), with the cable fixed to the telescopic section. The telescopic section provides a support and fixing point for the cable, facilitating the gravity balance of the charging gun. Furthermore, by designing the connecting rod as a two-part structure, when charging is needed, the user pulls the charging gun, providing a downward pulling force to the cable and connecting rod. The telescopic section of the connecting rod extends from the main body, increasing the length of the connecting rod. Combined with the increased support force of the hydraulic rod when the connecting rod is pulled down, this facilitates the re-establishment of balance in the charging pile under the working state of the gun-cable gravity balancing device.

[0025] In one embodiment of this application, the telescopic section includes multiple sliding rods that are nested together, and one of the sliding rods is used to fix the cable of the charging gun.

[0026] With the above settings, when charging is needed, the user can pull the charging gun by hand, which allows multiple sliding rods of the telescopic section to extend in sequence, increasing the length of the connecting rod. Combined with the increased support force of the hydraulic rod when the connecting rod is pulled down, it is easier for the charging pile to re-establish balance under the working state of the gun line gravity balance device.

[0027] In one embodiment of this application, the main body segment is used to fix the cable of the charging gun.

[0028] This application fixes a portion of the cable to the main body section and another portion of the cable to the telescopic section. That is, it sets fixing positions for fixing the cable on both the main body section and the telescopic section. This allows more sections of the cable to be fixed on the connecting rod, which helps to improve the gravity balance effect of the cable gravity balance device and facilitates cable management, making the cable neater.

[0029] On the other hand, this application provides a charging pile, which includes a pile body, a charging gun, and a gun cable gravity balancing device in any of the above embodiments; the base is fixed to the pile body, one end of the charging gun cable is connected to the pile body, and the other end of the charging gun cable is located outside the pile body and connected to the charging gun head.

[0030] The charging pile provided in this application adopts the gun line gravity balancing device in any of the above embodiments. Therefore, the charging pile can at least improve the damage of the gun head to the metal PIN pin in the vehicle-end charging port when the gun is plugged in, thereby improving the charging stability and operational reliability of the charging pile. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of an application scenario for a charging pile provided in an embodiment of this application;

[0032] Figure 2 This is a schematic diagram illustrating another application scenario of a charging pile provided in an embodiment of this application;

[0033] Figure 3 This is a schematic diagram of the charging pile in its initial state, as provided in the embodiments of this application.

[0034] Figure 4 This is a schematic diagram of the charging pile in the working state provided in the embodiments of this application;

[0035] Figure 5 A schematic diagram of the gun line gravity balancing device provided in the embodiments of this application in the initial state;

[0036] Figure 6 for Figure 5 A simplified diagram of the gravity balancing device for the gun line in the diagram;

[0037] Figure 7 A schematic diagram of the gun wire gravity balancing device provided in the embodiments of this application in the working state;

[0038] Figure 8 for Figure 7 A simplified diagram of the gravity balancing device for the gun line in the diagram;

[0039] Figure 9 A schematic diagram of the gun line gravity balancing device provided in this application, showing its movement from the initial state to the working state;

[0040] Figure 10 A simplified diagram of the gun wire gravity balancing device provided in the embodiments of this application under working conditions;

[0041] Figure 11 A schematic diagram illustrating the structural relationship between the connecting rod, the first connecting plate, and the second connecting plate provided in an embodiment of this application;

[0042] Figure 12A This is a schematic diagram illustrating the structural relationship between the connecting rod, the coil spring, and the base provided in an embodiment of this application.

[0043] Figure 12B for Figure 12A A magnified view of a section at point A in the middle;

[0044] Figure 13 This is a schematic diagram of the structure of one of the drive mechanisms provided in the embodiments of this application in the initial state.

[0045] Figure 14 for Figure 13 A schematic diagram of the drive mechanism in the working state;

[0046] Figure 15 This is a schematic diagram of a drive mechanism provided in an embodiment of this application.

[0047] Figure label:

[0048] 100-Charging pile; 101-Charging host; 102-Charging terminal; 103-Charging gun; 1031-Gun head; 1032-Cable; 200-Electric vehicle; 300-Power grid;

[0049] 10-Pile body;

[0050] 20 - Gun wire gravity balancing device; 21 - Base; 211 - Bracket; 212 - Connecting shaft; 213 - Base plate;

[0051] 22-Connecting rod; 221-Main body section; 222-Telescopic section; 2221-Slide rod;

[0052] 23-Drive mechanism; 231-Hydraulic rod; 232-Coil spring;

[0053] 233-Solenoid valve; 2331-Solenoid coil; 2332-Valve core; 234-Hydrodynamic cylinder; 2341-Cylinder body; 2342-Piston; 235-Push-pull rod;

[0054] 236 - Motor; 237 - Gear set;

[0055] 241 - First connecting plate; 242 - Second connecting plate;

[0056] 251 - First fixing part; 252 - Second fixing part. Detailed Implementation

[0057] 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.

[0058] 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.

[0059] In the embodiments of this application, the terms "exemplarily" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplarily" 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 "exemplarily" 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.

[0060] Figure 1 This is a schematic diagram illustrating an application scenario of a charging pile provided in an embodiment of this application. Figure 2 Please refer to the schematic diagram of another application scenario of the charging pile provided in the embodiments of this application. Figure 1 and Figure 2 This application provides a charging pile 100, which can be used to charge a device. The device to be charged can be, for example, an electric vehicle 200, or 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 also output electrical energy back to the power grid 300 through the charging pile 100.

[0061] For example, the charging pile 100 can be a split-type charging pile or an integrated charging pile.

[0062] In some embodiments, such as Figure 1As 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 103. 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 103. The head 1031 of each charging gun 103 is connected to the corresponding charging terminal 102 via a cable 1032, and the head 1031 of each charging gun 103 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 103, and one or more charging guns 103 are connected to one electric vehicle 200.

[0063] The charging host 101 includes multiple power conversion devices that convert the AC power output from the power grid 300 into stable DC or AC power before supplying it to the charging terminal 102. These power conversion devices 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 103. The charging terminal 102 includes a charging pile, 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.

[0064] In other embodiments, such as Figure 2 As shown, the charging pile 100 is an integrated charging device. Specifically, the human-machine interface, charging control unit, and metering and billing unit of the charging pile 100 are directly installed in the charging host 101. Thus, the charging pile 100 includes the charging host 101 and at least one charging gun 103. The head 1031 of the charging gun 103 is connected to the charging host 101 via a cable 1032. That is, the charging pile 100 does not include the charging terminal 102. In a specific implementation, multiple power conversion devices in the charging host 101 convert the AC power output from the power grid 300 into stable DC or AC power, which is then delivered to the electric vehicle 200 through the charging gun 103.

[0065] To meet the demands of high-power transmission and heat dissipation safety, the diameter of the cable 1032 in the charging gun 103 gradually increases, resulting in a greater weight for the charging gun 103. In some embodiments, to prevent the cable 1032 from being dragged on the ground due to the weight of the cable 1032 and the gun head 1031 during charging, which could cause wear on the cable 1032's outer sheath or even breakage of the internal insulation layer due to long-term friction, thus creating a risk of leakage and shortening its service life; or to prevent the heavy charging cable 1032 from increasing the difficulty of plugging and unplugging the gun during insertion and removal, and causing fatigue due to frequent plugging and unplugging, leading to a decline in user experience, the charging pile 100 is equipped with a gravity balancing device. For example, a hook is fixed on the charging pile 100 to manage the cable 1032 and achieve gravity balancing.

[0066] However, devices such as hooks for achieving gravity balance and cable 1032 management, when using the charging pile 100 to charge the vehicle's charging port, typically fix the hooks to the top area of ​​the charging pile to achieve optimal gravity balance and prevent the cables 1032 from piling up on the ground. This results in the hooks exerting an upward pulling force on the charging head 1031, causing the PIN pins to bear upward tensile stress when the charging head 1031 is inserted into the vehicle's charging port. This problem can easily lead to accelerated wear of the PIN pins and even structural deformation, affecting charging stability and equipment lifespan. Based on this, this application provides a cable gravity balancing device 20 and a charging pile 100 including the cable gravity balancing device 20. The cable gravity balancing device 20 and the charging pile 100 can balance the gravity of the cables 1032, reducing the stress borne by the metal PIN pins of the vehicle's charging port during charging.

[0067] The following text will take the application of the gun wire gravity balancing device 20 to the charging pile 100 as an example to provide a detailed introduction and explanation of the specific structure of the gun wire gravity balancing device 20 and the charging pile 100 containing the gun wire gravity balancing device 20.

[0068] Before introducing the gun wire gravity balancing device 20 and the charging pile 100 including the gun wire gravity balancing device 20, this application will first explain the various states of the gun wire gravity balancing device 20 and the charging pile 100 that will be discussed below.

[0069] The charging pile 100 has three states: the initial state of the charging pile 100, the intermediate state of the charging pile 100, and the working state of the charging pile 100. In the initial state of the charging pile 100, the charging pile 100 is not connected to the electric vehicle 200 (i.e., the charging gun head 1031 of the charging pile 100 is disconnected from the vehicle-end charging port of the electric vehicle 200), and the drive mechanism 23 of the gun line gravity balancing device 20 does not move (i.e., the drive mechanism 23 of the gun line gravity balancing device 20 is stationary). In the working state of the charging pile 100, the charging pile 100 is connected to the electric vehicle 200 (i.e., the charging gun head 1031 of the charging pile 100 is plugged into the vehicle-end charging port of the electric vehicle 200), and at this time, the drive mechanism 23 of the gun line gravity balancing device 20 is also stationary. In the intermediate state of the charging pile 100, the charging pile 100 is not connected to the electric vehicle 200, and the drive mechanism 23 of the gun line gravity balancing device 20 is in motion (i.e., the drive mechanism 23 of the gun line gravity balancing device 20 is activated).

[0070] The gun wire gravity balancing device 20 also has three states: the initial state, the intermediate state, and the operating state. In the initial state, the gun wire gravity balancing device 20 is not connected to the electric vehicle 200 (i.e., the gun wire gravity balancing device 20 is not connected to the electric vehicle 200 via its fixed gun head 1031, and the gun head 1031 is detached from the charging port at the vehicle end of the electric vehicle 200), and the drive mechanism 23 of the gun wire gravity balancing device 20 is not moving (i.e., the drive mechanism 23 of the gun wire gravity balancing device 20 is stationary). In the operating state, the gun wire gravity balancing device 20 is connected to the electric vehicle 200. When the electric vehicle 200 is in motion (i.e., the gun wire gravity balancing device 20 is connected to the charging port at the end of the electric vehicle 200 via the gun head 1031 fixed thereon), the drive mechanism 23 of the gun wire gravity balancing device 20 is also in a stationary state. In the intermediate state of the gun wire gravity balancing device 20, the gun wire gravity balancing device 20 is not connected to the electric vehicle 200, and the drive mechanism 23 of the gun wire gravity balancing device 20 is in motion (i.e., the drive mechanism 23 of the gun wire gravity balancing device 20 is activated).

[0071] When the charging pile 100 is in the initial state, the gun line gravity balancing device 20 is also in the initial state, and the charging pile 100 and the electric vehicle 200 are in a non-charging state; when the charging pile 100 is in the intermediate state, the gun line gravity balancing device 20 is also in the intermediate state, and the charging pile 100 and the electric vehicle 200 are in a non-charging state; when the charging pile 100 is in the working state, the gun line gravity balancing device 20 is also in the working state, and the charging pile 100 and the electric vehicle 200 are in the charging state.

[0072] Figure 3 This is a schematic diagram of the charging pile 100 provided in the embodiments of this application in its initial state. Figure 4 This is a schematic diagram of the charging pile 100 in the working state provided in the embodiments of this application. Please refer to the following: Figure 3 and Figure 4 As shown, the charging pile 100 includes a pile body 10, a charging gun 103 and a gun line gravity balancing device 20. The charging gun 103 includes a cable 1032 and a gun head 1031. One end of the cable 1032 is connected inside the pile body 10, and the other end of the cable 1032 is located outside the pile body 10 and connected to the gun head 1031.

[0073] The charging pile 100 can be either an integrated charging device or a separate charging device. This application does not impose any restrictions on this. The integrated charging device and the separate charging device are described above and will not be repeated here. When the charging pile 100 is an integrated charging device, the pile body 10 is the charging host 101 or the outer shell of the charging host 101; when the charging pile 100 is a separate charging device, the pile body 10 is the charging terminal 102 or the outer shell of the charging terminal 102.

[0074] The gun cable gravity balancing device 20 includes a base 21, a connecting rod 22, and a drive mechanism 23. The base 21 is used to fix the pile body 10 of the charging pile 100. The connecting rod 22 is rotatably connected to the base 21 and is used to fix the cable 1032 of the charging gun 103 of the charging pile 100. The drive mechanism 23 is connected to the connecting rod 22 and is used to drive the connecting rod 22 to rotate.

[0075] The gun wire gravity balancing device 20 is connected to the pile body 10. The base 21 of the gun wire gravity balancing device 20 can be fixed to the top of the pile body 10, or the base 21 of the gun wire gravity balancing device 20 can be fixed to the side wall of the pile body 10. This application does not limit this, as long as the fixed position of the base 21 and the pile body 10 does not affect the movement of the connecting rod 22 between the initial state and the working state of the gun wire gravity balancing device 20. Figure 3 and Figure 4 The illustration is based on the example of the base 21 being fixed to the side wall of the pile body 10.

[0076] One end of the connecting rod 22 is rotatably connected to the base 21, and the other end of the connecting rod 22 is a free end. The specific connection method between the connecting rod 22 and the base 21 is not limited in this application; for example, ... Figure 12A As shown, Figure 12A The connection relationship between the base 21 and the connecting rod 22 is shown. Figure 12AIn the middle, the base 21 includes a base plate 213, two brackets 211 and a connecting shaft 212. The two brackets 211 are fixedly connected to the base plate 213 respectively. The two brackets 211 are parallel and spaced apart. The connecting shaft 212 is fixedly connected between the two brackets 211. One end of the connecting rod 22 is sleeved on the connecting shaft 212 and the connecting rod 22 rotates relative to the connecting shaft 212.

[0077] certainly, Figure 12A The rotatable connection between the connecting rod 22 and the base 21 provided is only one example of this application. For example, in some embodiments, the connecting shaft 212 is rotatably connected between two brackets 211, and one end of the connecting rod 22 is fixed to the connecting shaft 212. The rotation of the connecting shaft 212 can drive the connecting rod 22 to rotate.

[0078] In this application, fixing the cable 1032 to the connecting rod 22 means that a portion of the cable 1032 is fixed to the connecting rod 22. Thus, when the connecting rod 22 is driven to rotate, it can move the cable 1032, causing the cable 1032 to be gradually lifted or gradually unfolded. For example, in... Figure 3 In the middle, cable 1032 is lifted by connecting rod 22, and cable 1032 is folded, which can prevent cable 1032 from dragging on the ground; in Figure 4 In the process, the cable 1032 moves downwards following the connecting rod 22, and the cable 1032 is gradually flattened. This reduces the tensile stress on the charging head 1031 during the charging process, improves the stress on the PIN pins in the charging port on the vehicle end, and reduces damage to the PIN pins. At the same time, the connecting rod 22 can still provide some support during the charging process, thus reducing the weight burden on the user when holding the charging gun 103, achieving a labor-saving effect.

[0079] like Figure 3 and Figure 4 As shown, the drive mechanism 23 is used to drive the connecting rod 22 to rotate between the working state and the initial state.

[0080] In this application, the drive mechanism 23 is used to drive the connecting rod 22 to rotate between the working state and the initial state of the gun line gravity balancing device 20. The specific structure of the drive mechanism 23 is not limited in this application. For example, the drive mechanism 23 may include a hydraulic rod 231; or, the drive mechanism 23 may include a solenoid valve 233 and a hydrodynamic cylinder 234 (such as a pneumatic cylinder or an oil cylinder); or, the drive mechanism 23 may also include a motor 236 and a gear set 237.

[0081] Furthermore, the end of the drive mechanism 23 away from the connecting rod 22 can be fixed to the base 21 or to the charging pile 10; this application does not impose any limitation on this. For example, to facilitate the assembly of the cable gravity balancing device 20 with the charging pile 100's charging pile 100, the end of the drive mechanism away from the connecting rod 22 can be fixed to the base 21. In this way, when assembling the cable gravity balancing device 20 with the charging pile 100's charging pile 100, it is only necessary to fix the base 21 to the charging pile 10. Or, for example, to save materials, the end of the drive mechanism away from the connecting rod 22 can be fixed to the charging pile 10. In this way, the size of the base 21 can be made smaller, saving materials and reducing the cost of the cable gravity balancing device 20.

[0082] In some embodiments, when the gun wire gravity balancing device 20 is not connected to the electric vehicle 200 and the gun wire gravity balancing device 20 is in its initial state (hereinafter referred to as the initial state), the angle between the connecting rod 22 and the horizontal plane is a first angle β1; when the gun wire gravity balancing device 20 is connected to the electric vehicle 200 (hereinafter referred to as the working state), the angle between the connecting rod 22 and the horizontal plane is a second angle β2; wherein, the first angle β1 is greater than the second angle β2.

[0083] This included angle setting means that the connecting rod 22 is closer to being vertical in the initial state than in the working state. The process of the connecting rod 22 moving from the working state to the initial state is the process of the connecting rod 22 gradually moving from being nearly horizontal to being nearly vertical. Similarly, the process of the connecting rod 22 moving from the initial state to the working state is the process of the connecting rod 22 gradually moving from being nearly vertical to being nearly horizontal.

[0084] Figure 5 This is a schematic diagram of the gun line gravity balancing device 20 provided in the embodiments of this application in its initial state. Figure 6 for Figure 5 A simplified diagram of the mechanism of the gun line gravity balancing device 20, wherein, Figure 6 Point O1 is the rotational connection point between the drive mechanism 23 and the base 21; point O2 is the rotational connection point between the connecting rod 22 and the base 21; point A is the intersection of the extension line of the drive mechanism 23 and the central axis of the connecting rod 22; and the dashed line represents the horizontal plane. (Refer to reference...) Figure 5 and Figure 6 It can be seen that in the initial state of the gun line gravity balancing device 20, the angle between the connecting rod 22 and the horizontal plane is β1, which is close to 90°.

[0085] For example, in the initial state of the cable gravity balancing device 20, the angle between the connecting rod 22 and the horizontal plane is 60° to 90°. For instance, the angle between the connecting rod 22 and the horizontal plane in the initial state can be 60°, 70°, 80°, or 90°. This application ensures that the angle between the connecting rod 22 and the horizontal plane in the initial state is 60° to 90°. When the charging pile 100 is not charging, the larger angle between the connecting rod 22 and the horizontal plane allows the connecting rod 22 to pull the cable 1032 of the charging gun 103 upwards. The cable 1032 is approximately folded, achieving a better gravity balancing effect. This reduces the possibility of the cable 1032 or the gun head 1031 dragging on the ground, thereby improving the phenomenon of cable 1032 wear and even internal insulation layer rupture caused by long-term friction. This helps maintain the appearance integrity of the charging gun 103, reduces the risk of leakage, and increases the service life of the charging gun 103.

[0086] Figure 7 This is a schematic diagram of the gun wire gravity balancing device 20 provided in the embodiments of this application under the working state. Figure 8 for Figure 7 A simplified diagram of the gun line gravity balancing device 20. Figure 8 Point O1 is the rotational connection point between the drive mechanism 23 and the base 21; point O2 is the rotational connection point between the connecting rod 22 and the base 21; point A is the intersection of the extension line of the drive mechanism 23 and the central axis of the connecting rod 22; and the dashed line represents the horizontal plane. (Refer to reference...) Figure 7 and Figure 8 It can be seen that when the gun line gravity balancing device 20 is in operation, the angle between the connecting rod 22 and the horizontal plane is β2, which is close to 0°.

[0087] For example, when the cable gravity balancing device 20 is in operation, the angle between the connecting rod 22 and the horizontal plane is 0° to 30°. For instance, the angle between the connecting rod 22 and the horizontal plane in the operating state can be 0°, 10°, 20°, or 30°. This application makes the angle between the connecting rod 22 and the horizontal plane in the operating state 0° to 30°. When the charging pile 100 is in the charging state, the angle between the connecting rod 22 and the horizontal plane is smaller, which can reduce the upward tension exerted by the connecting rod 22 on the cable 1032, thereby reducing the upward tensile stress borne by the charging head 1031. Therefore, during the charging process of the charging pile 100, it can avoid or reduce the pulling damage to the PIN pins in the vehicle-end charging port caused by the upward tensile stress borne by the charging head 1031.

[0088] Furthermore, since the cable 1032 is fixed to the connecting rod 22, the connecting rod 22 can withstand a certain amount of gravity from the cable 1032, whether the charging pile 100 is in its initial state or in its working state, thus playing a role in balancing the gravity of the charging gun 103. This reduces the difficulty of operation for the user during the insertion and removal of the charging gun, reduces fatigue caused by frequent insertion and removal, and improves the user experience.

[0089] In the charging pile 100 provided in this application, through the above-described structural arrangement, when the driving mechanism 23 drives the connecting rod 22 of the charging gun 103 gravity balancing device 20 to rotate from the working state to the initial state, since part of the cable 1032 of the charging gun 103 is fixed to the connecting rod 22 of the charging gun 103 gravity balancing device 20, and the angle between the connecting rod 22 in the working state and the horizontal plane is smaller than the angle between the connecting rod 22 in the initial state and the horizontal plane, that is, the process of the connecting rod 22 moving from the working state to the initial state is a process of the connecting rod 22 gradually moving to a near-vertical position. Therefore, the movement of the connecting rod 22 can drive the connection between the connecting rod 22 and the cable 1032 to move upward, thereby lifting the cable 1032, so that part of the weight of the charging gun 103 is absorbed by the connecting rod 22 and the driving mechanism 23, which can improve the gravity balancing effect of the charging gun 103 gravity balancing device 20, thereby reducing the burden on the user during the return of the charging gun and playing a labor-saving role.

[0090] When the cable balancing device 20 moves from its initial state to its working state, the angle between the connecting rod 22 in the working state and the horizontal plane is smaller than that in the initial state. This means the connecting rod 22 gradually moves towards a near-horizontal position. Therefore, the movement of the connecting rod 22 gradually reduces the tension on the cable 1032. When the charging head 1031 is inserted into the vehicle's charging port, this reduces the tension on the cable 1032 and the charging head 1031, thus mitigating damage to the metal pins in the vehicle's charging port caused by the charging head 1031 during the charging insertion process. This improves the charging stability and operational reliability of the charging pile 100. In addition, when the cable gravity balancing device 20 moves from the initial state to the working state, the connecting rod 22 can still support the cable 1032 due to its setting. Therefore, even if the cable 1032 is gradually flattened, the cable gravity balancing device 20 of this application can still play a certain gravity balancing role. On the one hand, it can reduce the burden on the user, and on the other hand, it can reduce the downward force on the charging head 1031 due to the weight of the cable 1032. When the charging head 1031 is plugged into the vehicle charging port, it can reduce the damage of the charging gun 103 to the PIN pins in the vehicle charging port.

[0091] Figure 11 The schematic diagram of the structural relationship between the connecting rod 22, the first connecting plate 241, and the second connecting plate 242 provided in the embodiments of this application is shown in the reference diagram. Figure 3 and Figure 11 In one embodiment of this application, the gun wire gravity balancing device 20 further includes a first connecting plate 241 and a second connecting plate 242, both of which are fixed to the base 21. The first connecting plate 241 and the second connecting plate 242 form an angle, and a connecting rod 22 is located between the first connecting plate 241 and the second connecting plate 242. In the initial state of the gun wire gravity balancing device 20, the connecting rod 22 abuts against the first connecting plate 241; in the working state of the gun wire gravity balancing device 20, the connecting rod 22 abuts against the second connecting plate 242.

[0092] The connecting rod 22 is located between the first connecting plate 241 and the second connecting plate 242, specifically between the side of the first connecting plate 241 closest to the second connecting plate 242 and the side of the second connecting plate 242 closest to the first connecting plate 241. Thus, when the connecting rod 22 moves from the working state to the initial state, it abuts against the first connecting plate 241, which limits further rotation and keeps the connecting rod 22 in its initial state. Similarly, when the connecting rod 22 moves from the initial state to the working state, it abuts against the second connecting plate 242, which also limits further rotation and keeps the connecting rod 22 in its working state. This application, by setting the first connecting plate 241 and the second connecting plate 242, effectively limits the movement of the connecting rod 22, making its rotation more reliable.

[0093] In some embodiments, when the connecting rod 22 is in its initial state, the contact between the connecting rod 22 and the first connecting plate 241 can be a surface contact, a line contact, or a point contact. Figure 11 In the example, when the connecting rod 22 is in its initial state, the contact between the connecting rod 22 and the first connecting plate 241 is exemplified as a surface contact. Similarly, when the connecting rod 22 is in its working state, the contact between the connecting rod 22 and the second connecting plate 242 can be a surface contact, a line contact, or a point contact. Figure 11 In the example, when the connecting rod 22 is in the working state, the contact between the connecting rod 22 and the second connecting plate 242 is exemplified by surface contact.

[0094] The drive mechanism 23 is used to drive the connecting rod 22 to rotate between the working state and the initial state. The specific structure of the drive mechanism 23 is not limited in this application; for example, ... Figure 9As shown, the drive mechanism 23 may include a hydraulic rod 231; or, as... Figure 13 and Figure 14 As shown, the drive mechanism 23 may include a solenoid valve 233 and a hydrodynamic cylinder 234 (such as a pneumatic cylinder or a hydraulic cylinder); or, as... Figure 15 As shown, the drive mechanism 23 may also include a motor 236 and a gear set 237. Several structural forms of the drive mechanism 23 will be illustrated below.

[0095] (1) The first structural form of the drive mechanism 23: Figure 9 This is a schematic diagram of the gun line gravity balancing device 20 provided in this application embodiment, showing its movement from the initial state to the working state. Figure 10 A simplified diagram of the gun wire gravity balancing device 20 provided in this application embodiment under working conditions is shown in the reference diagram. Figure 9 and Figure 10 As shown, the drive mechanism 23 includes a hydraulic rod 231, one end of which is rotatably connected to the connecting rod 22, and the other end of which is rotatably connected to the base 21.

[0096] That is, in this structural form, the drive mechanism 23 includes a hydraulic rod 231, and the cable gravity balancing device 20 drives the connecting rod 22 to rotate between the working state and the initial state via the hydraulic rod 231. For example, in the initial state, the hydraulic rod 231 extends and applies an upward supporting force to the connecting rod 22, keeping the connecting rod 22 in a nearly vertically upward state. At this time, the connecting rod 22 and the hydraulic rod 231 together balance the weight of the cable 1032 and the gun head 1031 of the charging gun 103. The torque generated by the supporting force provided by the hydraulic rod 231 is equal to the torque generated by the weight of the connecting rod 22 and the charging gun 103, and the hydraulic rod 231 and the connecting rod 22 remain in the initial state, that is, the hydraulic rod 231 and the connecting rod 22 remain in a balanced state.

[0097] When charging is required (i.e., when the charging pile 100 needs to switch from its initial state to its working state), the user manually pulls the nozzle 1031 of the charging gun 103. The balance between the hydraulic rod 231 and the connecting rod 22 in the initial state is broken, and the hydraulic rod 231 is passively compressed. When the connecting rod 22 moves to the working state, the connecting rod 22 and the hydraulic rod 231 re-establish balance.

[0098] When the charging station 100 needs to be restored to its initial state after charging is completed, the user holds the charging gun 103, the downward force applied to the connecting rod 22 disappears, the hydraulic rod 231 extends and drives the connecting rod 22 back to its initial state.

[0099] The drive mechanism 23 of this application adopts a hydraulic rod 231. The hydraulic rod 231 can convert external pressure into linear support force through Pascal's principle, so that the connecting rod 22 and the cable 1032 fixed on it are kept in the initial state or working state. It can automatically adjust the output thrust according to the load change of the connecting rod 22 (such as the downward force applied by the user to the connecting rod 22 or other impact load changes), and can still stably support and achieve position locking under load changes.

[0100] When the drive mechanism 23 includes a hydraulic rod 231, in one embodiment of this application, the drive mechanism 23 also includes a coil spring 232. Figure 12A This is a schematic diagram showing the structural relationship between the connecting rod 22, the coil spring 232, and the base 21 provided in the embodiments of this application. Figure 12A One method of fixing the coil spring 232 is shown. Figure 12B for Figure 12A A magnified view of a portion at point A. Please refer to the reference. Figure 12A and Figure 12B As shown, one end of the coil spring 232 is fixedly connected to the connecting rod 22, and the other end of the coil spring 232 is fixedly connected to the base 21; the coil spring 232 is used to drive the connecting rod 22 to rotate.

[0101] The coil spring 232 is formed by winding a circular or square elastic material. One end of the coil spring 232 is fixedly connected to the connecting rod 22, and the other end is fixedly connected to the base 21. Thus, when the connecting rod 22 rotates relative to the base 21, one end of the coil spring 232 moves with the connecting rod 22, enabling the coil spring 232 to store or release energy. In this embodiment, one end of the coil spring 232 is fixedly connected to the connecting rod 22, and the other end is fixedly connected to the base 21. Thus, when the connecting rod 22 rotates from its initial state to its working state, the connecting rod 22 drives the coil spring 232 to move and store energy; when the coil spring 232 releases energy, it generates a force that drives the connecting rod 22 to rotate from its working state back to its initial state. That is, the coil spring 232 stores energy when the connecting rod 22 moves from its initial state to its working state, and the coil spring 232 releases energy when the connecting rod 22 moves from its working state back to its initial state. This application, by setting a coil spring 232, can accelerate the resetting of the connecting rod 22 from the working state to the initial state, thereby accelerating the return speed when the user returns the gun and improving the user experience.

[0102] For example, such as Figure 12A and Figure 12B As shown, when the connecting rod 22 is sleeved and rotatably connected to the connecting shaft 212 of the base 21, the coil spring 232 is sleeved on the outer circumference of the connecting shaft 212, with one end of the coil spring 232 fixed to the connecting shaft 212 and the other end fixed to the connecting rod 22. Thus, rotation of the connecting rod 22 allows the coil spring 232 to store or release energy. Figure 12A and Figure 12B In the middle, one end of the coil spring 232 is directly fixed to the connecting rod 22, and the other end of the coil spring 232 is directly fixed to the connecting shaft 212 of the base 21.

[0103] certainly, Figure 12A and Figure 12B The arrangement of the coil spring 232 shown is only one example of this application and is not a limitation of this application. For example, in some other embodiments, the coil spring 232 can also be replaced by a tension spring, one end of which is fixedly connected to the connecting rod 22 and the other end of which is fixedly connected to the base plate 213 of the base 21.

[0104] In one embodiment of this application, reference is made to... Figure 4 and Figure 7 As shown, the connecting rod 22 includes a main body section 221 and a telescopic section 222. A portion of the telescopic section 222 is located inside the main body section 221, and another portion extends out of the main body section 221. The telescopic section 222 can slide relative to the main body section 221. The main body section 221 is connected to the drive mechanism 23, and the telescopic section 222 is used to fix the cable 1032 of the charging gun 103.

[0105] This application configures the connecting rod 22 as comprising a main body section 221 and a telescopic section 222 (i.e., the connecting rod 22 is telescopic), and the telescopic section 222 is used to fix the cable 1032. The telescopic section 222 can provide a support and fixing point for the cable 1032, which is beneficial to the gravity balance of the charging gun 103. In addition, by configuring the connecting rod 22 as comprising a main body section 221 and a telescopic section 222, when charging is required, the user pulls the charging gun 103, providing a downward pulling force to the cable 1032 and the connecting rod 22. The telescopic section 222 of the connecting rod 22 can extend from the main body section 221, increasing the length of the connecting rod 22. Combined with the increased support force of the hydraulic rod 231 when the connecting rod 22 is pulled down, it is easier for the charging pile 100 to re-establish balance in the working state.

[0106] In one embodiment of this application, the telescopic section 222 includes a plurality of mutually nested slide rods 2221, one of which is used to fix the cable 1032 of the charging gun 103. With this arrangement, when charging is required, the user pulls the charging gun 103, which allows the plurality of slide rods 2221 of the telescopic section 222 to extend sequentially, increasing the length of the connecting rod 22. Combined with the increased support force of the hydraulic rod 231 when the connecting rod 22 is pulled down, this facilitates the charging pile 100 to re-establish balance during operation.

[0107] For example, the slide bar 2221 that is furthest from the main body section 221 among the multiple slide bars 2221 (i.e. the slide bar 2221 that is furthest from the main body section 221 among the multiple slide bars 2221) is fixedly connected to the cable 1032.

[0108] In one embodiment of this application, the main body segment 221 is used to fix the cable 1032 of the charging gun 103. The portion of the cable 1032 fixed to the main body segment 221 and the portion of the cable 1032 fixed to the telescopic segment 222 are different sections of the cable 1032.

[0109] In other words, in addition to fixing a portion of the cable 1032 via the slide bar 2221 of the telescopic section 222, this application also fixes another portion of the cable 1032 via the main body section 221. By fixing a portion of the cable 1032 to the main body section 221 and another portion of the cable 1032 to the telescopic section 222, i.e., by providing fixing positions for the cable 1032 on both the main body section 221 and the telescopic section 222, this application allows more sections of the cable 1032 to be fixed on the connecting rod 22. This improves the gravity balance effect of the cable gravity balance device 20 and facilitates the management of the cable 1032, making the cable 1032 neater.

[0110] In some examples, the connecting rod 22 of this application is provided with two fixing parts, wherein the first fixing part 251 is located on the main body section 221, and the second fixing part 252 is located on the slide rod 2221 of the telescopic section 222. Of course, two fixing parts are only examples, and three fixing parts may also be included.

[0111] This application, by setting fixed positions for the cable 1032 on both the main body section 221 and the telescopic section 222, allows more sections of the cable 1032 to be fixed on the connecting rod 22, which improves the gravity balance effect of the cable balancing device 20. Furthermore, the fixed positions for fixing the cable 1032 on the telescopic section 222 are located on the slide rods 2221 furthest from the main body section 221 among the multiple slide rods 2221. Thus, when charging is needed, the user can pull the charging gun 103, allowing the multiple slide rods 2221 of the telescopic section 222 to extend sequentially, increasing the length of the connecting rod 22. Combined with the increased support force of the hydraulic rod 231 when the connecting rod 22 is pulled down, this facilitates the re-establishment of balance in the charging pile 100 during operation.

[0112] Furthermore, the structure of the aforementioned fixing parts (such as the first fixing part 251 and the second fixing part 252) is not limited in this application; for example, it can be a cable tie, a U-shaped fixing clip, or a C-shaped fixing clip.

[0113] When the drive mechanism 23 includes a hydraulic rod 231, the hydraulic rod 231 needs to be selected and designed in order to ensure that the supporting force provided by the hydraulic rod 231 can balance the weight of the charging gun 103. Since the connecting rod 22 is nearly horizontal when the charging pile 100 is in operation, the torque generated by the weight of the charging gun 103 is relatively large. Therefore, the selection and design of the hydraulic rod 231 mainly considers the working state of the charging pile 100.

[0114] Figure 10 A simplified diagram of the mechanism of the gun wire gravity balancing device 20 provided in the embodiments of this application in the working state, wherein, Figure 10 In the diagram, point O1 is the rotational connection point between the drive mechanism 23 (i.e., hydraulic rod 231) and the base 21; point O2 is the rotational connection point between the connecting rod 22 and the base 21; point A is the intersection of the extension line of the hydraulic rod 231 and the central axis of the connecting rod 22; point B is the connection point between the hydraulic rod 231 and the connecting rod 22; point C is the endpoint of the connecting rod 22 away from the base 21; line segment DE passes through point B and is perpendicular to line segment O2C; line segment EF is perpendicular to line segment DE; and line segment EG is perpendicular to line segment O1C.

[0115] Assuming the weight of the charging gun 103 is M, and the length of the line segment CD passing through the connection point of the hydraulic rod 231 and the connecting rod 22 and perpendicular to the connecting rod 22 is L0, and the angle between the hydraulic rod 231 and the connecting rod 22 in the working state is α, and the angle between line segments DE and DF is α, then the gravity F at point C is M × g. According to the lever principle, the gravity at point C can be equivalent to that at point D, and the force at point D is F1 = F × L0, that is, the force in the direction of line segment DF is F1.

[0116] At this point, we can obtain that the force in the direction of line segment DE is F2 = F1 × cosα, and the force in the direction of line segment BG is F. x =F2×SINα.

[0117] Therefore, in one embodiment of this application, the supporting force of the hydraulic rod 231 in the working state satisfies the following condition:

[0118] F x =Mg×L0×cosα×sinα

[0119] Among them, F x M is the supporting force of the hydraulic rod 231, M is the total weight of the charging gun 103, L0 is the distance from the end of the connecting rod 22 away from the base 21 to the first line segment in the working state, the first line segment passes through the connection point of the hydraulic rod 231 and the connecting rod 22 and is perpendicular to the connecting rod 22, and α is the included angle between the hydraulic rod 231 and the connecting rod 22 in the working state.

[0120] For example, assuming the weight of the charging gun 103 is 1.938 kg / m, the exposed length of the cable 1032 is 4 m (i.e., the fixed position of the cable 1032 is 4 meters exposed), α is 13°, and L0 is 0.4 m, then F = M × g = 1.938 × 4 × 10 = 77.52 N, F1 = F × L0 = 77.52 N × 0.4 m = 31 N, F2 = F1 × COSα = 31 N × 0.9744 = 30.21 N. The calculated force on the hydraulic rod 231 is: F x =F2×SINα=30.21×0.22=6.64N.

[0121] Calculations show that the external hydraulic rod 231 requires at least 6.64 N of support force, without considering the weight of the gun line gravity balancing device 20 itself.

[0122] (2) The second structural form of the drive mechanism 23: Figure 13 This is a schematic diagram of the structure of one of the drive mechanisms 23 provided in the embodiments of this application in the initial state. Figure 14 for Figure 13 A schematic diagram of the drive mechanism 23 in its working state. (Refer to reference...) Figure 12A , Figure 13 and Figure 14 The drive mechanism 23 includes a solenoid valve 233 and a hydrodynamic cylinder 234. The hydrodynamic cylinder 234 is fixed to the base 21 and connected to the solenoid valve 233. The hydrodynamic cylinder 234 includes a cylinder body 2341 and a piston 2342. A portion of the piston 2342 is located inside the cylinder body 2341 and can slide relative to the cylinder body 2341. Another portion of the piston 2342 extends outside the cylinder body 2341. The portion of the piston 2342 outside the cylinder body 2341 is rotatably connected to a connecting rod 22. The fluid passage of the solenoid valve 233 communicates with the cylinder body 2341, and the solenoid valve 233 is used to drive the piston 2342 to slide within the cylinder body 2341.

[0123] The fluid power cylinder 234 can be either a pneumatic cylinder or a hydraulic cylinder; this application does not impose any restrictions on this.

[0124] In solenoid valve 233, port "P" is the inlet for the pressure medium, connected to an air or oil source. Ports "A" and "B" are the output ports of solenoid valve 233, connected to downstream equipment, i.e., a pneumatic or hydraulic cylinder. Ports "R" and "S" are the vent ports of solenoid valve 233. If the medium is air, the vent port is generally not connected to a pipe, and the air can be directly discharged into the atmosphere; if the medium is liquid, the vent port is connected to the corresponding pipeline.

[0125] Solenoid valve 233 includes solenoid coil 2331 and valve core 2332, for example, Figure 13As shown, when the electromagnetic coil 2331 is de-energized, the valve core 2332 blocks the discharge port S, and the fluid enters from port P, passes through port B, and enters the fluid power cylinder 234, driving the piston 2342 inside the cylinder body 2341 of the fluid power cylinder 234 to move to the left, acting on one side of the connecting rod 22 to drive the connecting rod 22 to rotate; as Figure 14 As shown, when the electromagnetic coil 2331 is energized, the valve core 2332 moves to the right and blocks the discharge port R. The fluid enters from port P, passes through port A and enters the fluid power cylinder 234, driving the piston 2342 in the cylinder body 2341 of the fluid power cylinder 234 to move to the right, pulling one side of the connecting rod 22 to make the connecting rod 22 rotate.

[0126] When the drive mechanism 23 adopts this structure, the connecting rod 22 can be driven by controlling the on and off of the solenoid valve 233, so that the connecting rod 22 can rotate from the initial state to the working state, or from the working state to the initial state.

[0127] For example, the drive mechanism 23 also includes a push-pull rod 235, which is connected between the piston 2342 and the connecting rod 22. The push-pull rod 235 is provided to connect the two when it is inconvenient to place the hydrodynamic cylinder 234 close to the connecting rod 22.

[0128] (3) The third structural form of the drive mechanism 23: Figure 15 This is a schematic diagram of the structure of a drive mechanism 23 provided in an embodiment of this application. Please refer to the following: Figure 12A and Figure 15 The drive mechanism 23 includes a motor 236 and a gear set 237. The motor 236 is fixed to the base 21, and its output end is connected to the input end of the gear set 237. The output end of the gear set 237 is connected to the connecting rod 22. The motor 236 is used to drive the connecting rod 22 to rotate through the gear set 237.

[0129] That is, this application uses a motor 236 and a gear set 237. The motor 236 drives the gear set 237 to rotate, and the gear set 237 drives the connecting rod 22 to rotate, thereby realizing the switching between the working state and the initial state of the connecting rod 22. The drive mechanism 23 of this application adopts a combination of motor 236 and gear set 237, which can achieve high-precision drive, and its structure is compact, efficient, and relatively simple to maintain.

[0130] For example, the gear set 237 includes multiple gears that cooperate with each other to adjust the rotational speed of the motor 236 to a suitable rotational speed for the connecting rod 22.

[0131] 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 gun wire gravity balancing device for charging piles, characterized in that, The cable gravity balancing device includes a base, a connecting rod, and a drive mechanism. The base is fixed to the charging pile body. The connecting rod is rotatably connected to the base and is used to fix the cable of the charging gun of the charging pile. The drive mechanism is connected to the connecting rod and is used to drive the connecting rod to rotate. When the gun line gravity balancing device is not connected to the electric vehicle and the gun line gravity balancing device is in its initial state, the angle between the connecting rod and the horizontal plane is the first angle. When the gun line gravity balancing device is connected to the electric vehicle, the angle between the connecting rod and the horizontal plane is a second angle; wherein, the first angle is greater than the second angle.

2. The gun wire gravity balancing device according to claim 1, characterized in that, The gun wire gravity balancing device also includes a first connecting plate and a second connecting plate, both of which are fixed to the base. There is an angle between the first connecting plate and the second connecting plate, and the connecting rod is located between the first connecting plate and the second connecting plate. When the gun wire gravity balancing device is not connected to the electric vehicle and is in the initial state, the connecting rod abuts against the first connecting plate; when the gun wire gravity balancing device is connected to the electric vehicle, the connecting rod abuts against the second connecting plate.

3. The gun wire gravity balancing device according to claim 1 or 2, characterized in that, When the gun line gravity balancing device is connected to the electric vehicle, the angle between the connecting rod and the horizontal plane is 0° to 30°.

4. The gun wire gravity balancing device according to claim 1 or 2, characterized in that, When the gun line gravity balancing device is not connected to the electric vehicle and the gun line gravity balancing device is in the initial state, the angle between the connecting rod and the horizontal plane is 60° to 90°.

5. The gun wire gravity balancing device according to claim 1 or 2, characterized in that, The driving mechanism includes a hydraulic rod, one end of which is rotatably connected to the connecting rod, and the other end of which is rotatably connected to the base.

6. The gun wire gravity balancing device according to claim 5, characterized in that, The driving mechanism also includes a coil spring, one end of which is fixedly connected to the connecting rod, and the other end of which is fixedly connected to the base; the coil spring is used to drive the connecting rod to rotate.

7. The gun wire gravity balancing device according to claim 1 or 2, characterized in that, The connecting rod includes a main body section and a telescopic section. A portion of the telescopic section is located inside the main body section, and another portion extends outside the main body section. The telescopic section is capable of sliding relative to the main body section. The main body section is connected to the drive mechanism, and the telescopic section is used to fix the cable of the charging gun.

8. The gun wire gravity balancing device according to claim 7, characterized in that, The telescopic section includes multiple sliding rods that are nested together, one of which is used to fix the cable of the charging gun.

9. The gun wire gravity balancing device according to claim 7, characterized in that, The main body section is used to fix the cable of the charging gun.

10. A charging pile, characterized in that, The device includes the pile body, the charging gun, and the gun cable gravity balancing device according to any one of claims 1-9; the base is fixed to the pile body, one end of the cable of the charging gun is connected to the pile body, and the other end of the cable of the charging gun is located outside the pile body and connected to the gun head of the charging gun.

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