Charging pile gun line management system and control method

Abstract

The invention provides a charging pile gun line management system and a control method, and the control method comprises the steps: in a paying-off state, in the paying-off state, the rotating shaft output torque of the charging pile gun line management system is controlled to carry out paying-off under the condition that the nominal gravity of a gun line is balanced; in the charging state, a rotating shaft of the charging pile gun line management system is controlled to balance the nominal gravity of a gun line, so that the gun line is suspended; in the take-up state, the rotating shaft output torque of the charging pile gun line management system is controlled to take up under the condition that the nominal gravity of a gun line is balanced; and in the standby state, the rotating shaft of the charging pile gun line management system is controlled to balance the nominal gravity of the gun line, so that the gun line is suspended. According to the charging pile gun line management system and the control method provided by the embodiment of the invention, the user operation intensity is reduced, and the charging experience feeling is improved.

Description

Technical Field

[0001] This application relates to the technical field of charging pile cable retracting devices, and particularly relates to a charging pile cable management system and a control method thereof. Background Art

[0002] Charging piles can be fixed on the ground or on the wall, installed in public parking lots, residential community parking lots or charging stations, and can charge various models of electric vehicles according to different voltage levels. Generally, a charging gun is provided on the charging pile, and the charging gun is connected to the charging pile through a cable. During the charging process or after the charging is completed when the user uses the charging gun, the cable may be scattered on the ground and may even be run over by a vehicle, which may damage the cable and affect the service life of the cable. Especially when the diameter of the cable exceeds 30mm and the length of the cable exceeds 5 meters, when the user removes the charging gun from the charging pile and inserts it into the vehicle for charging, it is necessary to overcome: the weight of the cable itself (generally 5-20 Kg), the frictional resistance between the cable and the ground, and the force to rotate the cable, and the operation is very laborious. Especially for women, the charging operation experience is very poor.

[0003] Therefore, it is desired to provide a control method for a charging pile to reduce the resistance that the user needs to overcome when using the charging gun, reduce the operation difficulty, and improve the user experience. Summary of the Invention

[0004] The technical problem to be solved by this application is that currently, when the user uses the charging gun, they need to overcome the gravity and resistance of the cable, the operation is laborious, and the user experience is very poor.

[0005] An embodiment of this application provides a charging pile cable management system, including: a motor, the motor includes a stator, a rotor, and a rotating shaft fixedly connected to the rotor; a winding disc, the winding disc is fixedly connected to the rotating shaft; a cable, one end of the cable is fixed on the winding disc, and the other end of the cable is used to connect to the charging cable, and the cable can be wound on the winding disc; an encoder, the encoder is used to generate the rotational displacement of the rotating shaft; a controller, the controller is electrically connected to the coil on the stator, and the controller is configured to control the coil current on the stator to control the output torque of the rotating shaft, and the controller defines the initial position of the cable charging cable connection end and the displacement amount of the cable charging cable connection end relative to the initial position according to the rotational displacement of the rotating shaft generated by the encoder; at least one output torque displacement amount corresponding curve formed by a plurality of preset output torques respectively corresponding to a plurality of preset displacement amounts is preset in the controller, so that the lifting force acting on the charging cable through the cable generated by the output torque of the rotating shaft matches the nominal gravity of the charging cable.

[0006] In some embodiments of the present application, the output torque displacement corresponding curve between two adjacent displacement amounts among the preset multiple displacement amounts is formed by interpolation method.

[0007] In some embodiments of the present application, the initial position of the wire rope gun wire connection end is determined by an offset amount preset relative to the wire rope zero position. The wire rope zero position is the position of the wire rope connection end corresponding to the rotation displacement of the rotating shaft generated by the encoder read by the controller when the wire rope is recovered through a preset wire rope recovery program and the wire rope at the gun wire connection end is restricted so that the coil current on the stator is not lower than the preset zero position positioning current.

[0008] In some embodiments of the present application, the at least one output torque displacement corresponding curve includes a wire winding curve. For any preset displacement amount in the wire winding curve, the pulling force acting on the gun wire through the wire rope generated by the output torque of the rotating shaft preset for this preset displacement amount is greater than the nominal gravity of the gun wire corresponding to this preset displacement amount.

[0009] In some embodiments of the present application, when the wire rope pulls the gun wire to be in the initial position, the gun wire hovers at this initial position under the action of a wire rope pulling force greater than the nominal gravity of the gun wire to enter the standby state.

[0010] In some embodiments of the present application, after the charging gun is inserted into the vehicle charging port, the gun wire hovers at the position of the displacement amount where the resultant force of the resistance that prevents the charging gun from being pulled out of the vehicle charging port and the nominal gravity of the gun wire on the charging gun is balanced with the pulling force acting on the gun wire through the wire rope generated according to the wire winding curve. The resistance includes the frictional force between the charging gun and the vehicle charging port and / or the resistance generated by anti-disengagement.

[0011] In some embodiments of the present application, when the pulling force acting on the gun wire through the wire rope generated according to the wire winding curve is greater than the resultant force of the operator's pulling force and the nominal gravity of the gun wire, the controller controls the rotor to drive the wire winding disc to rotate in the wire winding direction at a preset wire winding speed displacement amount curve to reduce the displacement amount of the wire rope gun wire connection end.

[0012] In some embodiments of the present application, the number of the preset multiple displacement amounts and the number of the preset multiple output torques of the rotating shaft are greater than or equal to 5 and less than or equal to 30.

[0013] In some embodiments of the present application, the number of the preset multiple displacement amounts and the number of the preset multiple output torques of the rotating shaft are greater than or equal to 10 and less than or equal to 20.

[0014] In some embodiments of the present application, the number of the preset multiple displacement amounts and the number of the preset multiple output torques of the rotating shaft are greater than or equal to 12 and less than or equal to 18.

[0015] In some embodiments of the present application, the pulling force generated by the output torque of the rotating shaft acting on the gun line through the wire rope differs from the nominal gravity of the gun line by less than or equal to 15 N.

[0016] In some embodiments of the present application, the pulling force generated by the output torque of the rotating shaft acting on the gun line through the wire rope differs from the nominal gravity of the gun line by less than or equal to 10 N.

[0017] In some embodiments of the present application, the pulling force generated by the output torque of the rotating shaft acting on the gun line through the wire rope differs from the nominal gravity of the gun line by less than or equal to 5 N.

[0018] In some embodiments of the present application, the pulling force generated by the output torque of the rotating shaft acting on the gun line through the wire rope differs from the nominal gravity of the gun line by less than or equal to 3 N.

[0019] In some embodiments of the present application, the system further includes: a braking mechanism, the braking mechanism is connected to the rotating shaft, and the braking mechanism is used to prevent the rotating shaft from rotating.

[0020] In some embodiments of the present application, after the controller receives a braking signal, the controller controls the braking mechanism to brake and prevent the rotating shaft from rotating, and reduces or disconnects the current of the stator.

[0021] In some embodiments of the present application, when the controller receives a brake release signal, the controller controls the braking mechanism to release the brake so that the rotating shaft can rotate.

[0022] In some embodiments of the present application, the system further includes: the at least one output torque displacement corresponding curve further includes a wire release curve, and the pulling force generated by the output torque of the rotating shaft acting on the gun line through the wire rope preset for any preset displacement amount in the wire release curve is less than the nominal gravity of the gun line corresponding to the preset displacement amount.

[0023] In some embodiments of the present application, the system further includes: when the controller receives a brake release signal, the controller also controls the pulling force generated by the output torque of the rotating shaft acting on the gun line through the wire rope according to the wire release curve.

[0024] In some embodiments of the present application, the system further includes: when the controller receives a signal for pulling out the charging gun from the vehicle charging port, the controller controls the pulling force generated by the output torque of the rotating shaft acting on the gun line through the wire rope according to the wire winding curve.

[0025] In some embodiments of the present application, the system further includes: when the controller receives a gun unplugging signal generated by unplugging the charging gun from the vehicle charging port, the controller also controls the braking mechanism to release the brake so that the rotating shaft can rotate.

[0026] In some embodiments of the present application, the system further includes: after the controller receives a to-be-charged signal generated by inserting the charging gun into the vehicle charging port, the controller controls the braking mechanism to brake and prevent the rotating shaft from rotating, and reduces or disconnects the current of the stator.

[0027] One aspect of the present application also provides a control method for a charging pile gun line management system, including: a wire releasing state, in the wire releasing state, controlling the rotating shaft of the charging pile gun line management system to output a torque to release the wire while balancing the nominal gravity of the gun line; a charging state, in the charging state, controlling the rotating shaft of the charging pile gun line management system to balance the nominal gravity of the gun line to make the gun line hover; a wire retracting state, in the wire retracting state, controlling the rotating shaft of the charging pile gun line management system to output a torque to retract the wire while balancing the nominal gravity of the gun line; a standby state, in the standby state, controlling the rotating shaft of the charging pile gun line management system to balance the nominal gravity of the gun line to make the gun line hover.

[0028] In some embodiments of the present application, when the force received by the rotating shaft is greater than the nominal gravity of the gun line and the difference is greater than the torque difference, it enters the wire releasing state, and controls the rotating shaft to release the wire according to the rotating shaft torque control curve.

[0029] In some embodiments of the present application, when the force received by the rotating shaft changes from being greater than the nominal gravity of the gun line to being equal to the nominal gravity of the gun line, it enters the charging state, and controls the torque of the rotating shaft to be equal to the nominal gravity of the gun line.

[0030] In some embodiments of the present application, when the force received by the rotating shaft is less than the nominal gravity of the gun line, it enters the wire retracting state, and controls the rotating shaft to retract the wire according to the rotating shaft torque control curve.

[0031] In some embodiments of the present application, when the force received by the rotating shaft changes from being less than the nominal gravity of the gun line to being equal to the nominal gravity of the gun line, it enters the standby state, and then controls the torque of the rotating shaft to be equal to the nominal gravity of the gun line.

[0032] In some embodiments of the present application, an induction device is provided on the charging gun or the charging gun seat of the charging pile gun line management system. When the induction device senses that the charging gun is unplugged from the charging gun seat, it enters the wire releasing state, controls the braking mechanism to release the rotating shaft, and controls the rotating shaft to release the wire according to the wire releasing torque control curve.

[0033] In some embodiments of the present application, when the sensing device senses that the charging gun is inserted into the charging port of the electric vehicle, it enters the charging state, controls the brake mechanism to hold the rotating shaft, controls the rotating shaft to stop outputting torque, and the gun line suspends.

[0034] In some embodiments of the present application, when the sensing device senses that the charging gun is unplugged from the charging port of the electric vehicle, it enters a reeling state, controls the brake mechanism to release the rotating shaft, and controls the rotating shaft to reel in the wire using a reeling torque control curve.

[0035] In some embodiments of the present application, when the sensing device senses that the charging gun is inserted into the charging gun holder, it enters a standby state, controls the brake mechanism to hold the rotating shaft, controls the rotating shaft to stop outputting torque, and the gun line suspends.

[0036] In some embodiments of the present application, a remote control device is provided on the charging pile, and the charging pile gun line management system is controlled by the remote control device to release the line.

[0037] The charging pile gun line management system and control method provided in the embodiment of the present application connect the winding reel and the gun line with a rope. The torque of the rotor and the weight of the gun line in the charging pile gun line management system are almost balanced. In this way, when the user operates the charging, he only needs to lift the weight of the charging gun by hand to control the charging gun to move it to the vehicle position for charging, which greatly reduces the operating intensity and improves the charging experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The following figures describe in detail the exemplary embodiments disclosed in this application. The same reference numerals represent similar structures in several views of the drawings. Those skilled in the art will understand that these embodiments are non-limiting, exemplary embodiments, and the drawings are only for the purpose of illustration and description, and are not intended to limit the scope of this application. Other embodiments may also accomplish the application intent in this application. It should be understood that the drawings are not drawn to scale.

[0039] in:

[0040] Figure 1 It is a schematic diagram of the overall structure of a charging pile gun line management system according to some embodiments of the present application;

[0041] Figure 2 It is a partial structural diagram of a charging pile gun line management system according to some embodiments of the present application;

[0042] Figure 3 It is a partial structural diagram of a charging pile gun line management system according to some embodiments of the present application;

[0043] Figure 4is a partial cross-sectional view of a charging pile cable management system according to some embodiments of the present application;

[0044] Figure 5 is a schematic cross-sectional structure diagram of a charging pile cable management system according to some embodiments of the present application;

[0045] Figure 6 is a schematic diagram of a shaft torque control curve according to some embodiments of the present application;

[0046] Figure 7 is a schematic diagram of the structure of a charging pile according to some embodiments of the present application;

[0047] Figure 8 is a flowchart of a control method for a charging pile according to some embodiments of the present application;

[0048] Figure 9 is a schematic diagram of a shaft torque cable retraction curve and a cable release curve according to some embodiments of the present application;

[0049] Figure 10 is a flowchart of the operation of a torque mode with a brake signal for a charging pile cable management system according to some embodiments of the present application;

[0050] Figure 11 is a flowchart of the operation of a variable torque mode for a charging pile cable management system according to some embodiments of the present application. Detailed implementation manners

[0051] The following description provides specific application scenarios and requirements of the present application, aiming to enable those skilled in the art to manufacture and use the content of the present application. For those skilled in the art, various partial modifications to the disclosed embodiments are obvious, and the general principles defined here can be applied to other embodiments and applications without departing from the spirit and scope of the present application. Therefore, the present application is not limited to the disclosed embodiments, but has the broadest scope consistent with the claims.

[0052] The technical solution of the present application will be described in detail below in conjunction with the embodiments and the drawings.

[0053] Refer to Figure 7As shown in the figure, an embodiment of the present application provides a charging pile, including: a charging pile cable management system 100; a charging pile body 52, the charging pile body 52 is electrically connected to the charging pile cable management system 100 through a wire 114; a cable 51, one end of the cable 51 is electrically connected to the charging pile body 52, one end of the cable of the charging pile cable management system is fixed to the middle of the cable 51, and the other end of the cable of the charging pile cable management system is fixed to the winding disc; a charging gun 53, one end of the charging gun 53 is electrically connected to the other end of the cable 51, and the other end of the charging gun 53 is used to connect to the charging interface of an electric vehicle; a charging gun seat 54, the charging gun seat 54 is detachably connected to the charging gun 53.

[0054] In some embodiments of the present application, the charging gun seat 54 may be provided on the charging pile body 52.

[0055] In some embodiments of the present application, the charging pile body 52 can output voltage to supply power to the charging pile cable management system 100. At the same time, when connected to the electric vehicle through the cable 51 and the charging gun 53, it charges the electric vehicle.

[0056] In some embodiments of the present application, the charging pile cable management system 100 is fixedly arranged on the top of the charging pile body 52. In this way, the length of the cable 51 can be increased, so as to increase the probability that the charging pile can be connected to the electric vehicle through the cable 51 and the charging gun 53, and further improve the usage frequency of the charging pile.

[0057] In some embodiments of the present application, an induction device is provided on the charging gun 53, which is communicatively connected to the controller of the charging pile cable management system. When the charging gun 53 is unplugged from the charging gun seat 54, the induction device sends a wire-releasing signal to the controller; when the charging gun 53 is unplugged from the charging interface of the electric vehicle, the induction device sends a wire-collecting signal to the controller; when the charging gun 53 is inserted into the charging gun seat 54, the induction device sends a standby signal to the controller; when the charging gun 53 is inserted into the charging interface of the electric vehicle, the induction device sends a charging signal to the controller.

[0058] Figure 1 It is a schematic diagram of the overall structure of the charging pile cable management system shown in some embodiments of the present application. Figure 2 It is a schematic diagram of a partial structure of the charging pile cable management system shown in some embodiments of the present application (removing the wire disc cover). Figure 3 It is a schematic diagram of a partial structure of the charging pile cable management system shown in some embodiments of the present application (removing the wire disc cover and the winding disc). Figure 4Partial cross-sectional view of the charging pile gun line management system shown in some embodiments of the present application( Figure 3 cross-sectional view). Figure 5 It is a schematic cross-sectional structure diagram of the charging pile gun line management system shown in some embodiments of the present application.

[0059] Refer to Figure 1 As shown, the charging pile gun line management system 100 includes: a housing 110; a detachable wire reel cover 120 located at one end of the housing. The housing 110 is cylindrical and is used to arrange components such as a stator, a rotor, and a rotating shaft (which will be described below). The wire reel cover 120 is used to protect the wire reel located inside the wire reel cover 120.

[0060] Continue to refer to Figure 1 As shown, a collar 111 that circumferentially sleeved and fixed the housing 110 and an installation structure 112 connected to the collar 111 and used to install the housing 110 on the charging pile are provided on the housing 110. The installation structure 112 has installation holes and can be installed on the charging pile by screws.

[0061] Continue to refer to Figure 1 As shown, a wire interface 113 is also provided on the housing 110. The wire 114 passes through the wire interface 113 and the housing 110 and is electrically connected to the corresponding components (such as a controller and a coil, etc.) inside the housing 110 to supply power to them.

[0062] Refer to Figure 2 As shown, after removing the wire reel cover 120, the wire reel 130 located inside the wire reel cover 120 is exposed. The wire reel 130 is used to wind the wire rope. One end of the wire rope is connected and wound on the wire reel 130. Among them, when the wire reel 130 rotates in the first direction, the wire rope is paid out; when the wire reel 130 rotates in the second direction, the wire rope is retracted. The other end of the wire rope can be connected to the gun line through a cable clamp. The wire rope can be a PE rope, a nylon rope or a steel wire rope, preferably a PE rope. It should be noted that the present application is not limited thereto. The wire rope can also use wear-resistant wire ropes of other materials, such as Kevlar ropes, etc.

[0063] Refer to Figure 3 As shown, after removing the wire reel 130, the rotating shaft 140 connected to the wire reel 130 is exposed. The wire reel 130 can be driven to rotate by the rotating shaft 140. The rotating shaft 140 extends out from inside the housing 110.

[0064] Refer to Figure 4 and Figure 5As shown, a motor is disposed inside the housing 110, including a motor stator 150, a rotor 160 that rotates around the stator 150, and a rotating shaft 140 fixedly connected to the rotor 160. One end of the rotating shaft 140 is fixedly connected to the center of the rotor 160, and the rotating shaft 140 is configured to be driven by the rotor 160 to rotate. The other end of the rotating shaft 140 is embedded in the center of the wire winding disc 130 and fixedly connected to the center of the wire winding disc 130, and the wire winding disc 130 is configured to be driven by the rotating shaft 140 to rotate. The stator 150 is wound with coils. The coils are powered by the wire 114. By controlling the current switch and the current magnitude in the coils, the torque generated by the rotor 160 and the rotating shaft 140 and the torque magnitude can be controlled, and further the wire winding disc 130 can be controlled to pay out or take in wire. The technical solution of the present application uses an electric control charging pile gun line management system 100 to cooperate with the user to use the charging gun, and controls the coil current to make the rotating shaft 140 generate a torque to balance the gravity of the charging gun, reducing the force required by the user.

[0065] Reference Figure 4 and Figure 5 As shown, the rotor 160 is in the shape of a cover, covering the outer circle of the stator 150, and the rotating shaft 140 passes through the center of the rotor 160 and is fixedly connected to the center of the rotor 160 at the passing position.

[0066] Continue to refer to Figure 4 and Figure 5 As shown, a first bearing 141 and a second bearing 142 are sleeved on the rotating shaft 140. The first bearing 141 and the second bearing 142 assist the rotation of the rotating shaft 140 to make its rotation smoother. The inner side of the lower end 141a of the first bearing 141 is supported by the rotating shaft 140, the outer side of the lower end 141a of the first bearing 141 is supported by the housing 110, and the inner side of the upper end 141b of the first bearing 141 supports the rotor 160. The outer side of the lower end 142a of the second bearing 142 is supported by a braking mechanism, the outer side of the upper end 142b of the second bearing 142 is limited by the housing 110, and the inner side of the upper end 142b of the second bearing 142 supports the rotating shaft 140. Specifically, a support portion 115 with a substantially L-shaped cross section extends from the inner side of the housing 110. The two ends of the support portion 115 respectively form limiting portions for limiting the outer rings of the first bearing 141 and the second bearing 142, and partially fixedly support the outer rings of the first bearing 141 and the second bearing 142. A stator accommodation cavity is formed between the support portion 115 and the outer shell 110 to accommodate the stator 150.

[0067] Continue to refer to Figure 4 and Figure 5As shown, a limiting structure 116 is also arranged on the top surface of the supporting part 115 through screws for axially limiting the first bearing 141 and the rotor 150.

[0068] Continue to refer to Figure 4 and Figure 5 As shown, the charging pile cable management system 100 further includes: a braking mechanism 143, the braking mechanism 143 is connected to the rotating shaft 140, and the braking mechanism 143 is used to prevent the rotating shaft 140 from rotating. Specifically, the braking mechanism 143 includes a main body part 143a, a movable part 143b and a limiting part 143c. A coil and an elastic member connected to the movable part are arranged on the main body part 143b. The movable part fixes the limiting part under the elastic force of the elastic member, and the limiting part is fixedly connected to the rotating shaft and moves synchronously with the rotating shaft. The movable part is, for example, a flat plate structure, and the movable part has magnetism. The cross section of the limiting part is L-shaped, the movable part abuts against the bottom edge of the L, and the side edge of the L is matched with the second thread structure on the side wall of the rotating shaft through the first thread structure. When the coil on the main body part is not powered on, the movable part abuts against and fixes the limiting part under the elastic force of the elastic member, thereby fixing the rotating shaft and preventing the rotating shaft from rotating. When the coil on the main body part is powered on, the magnetic field generated by the coil attracts the movable part, thereby releasing the limiting part and releasing the rotating shaft, so that the rotating shaft can rotate.

[0069] Continue to refer to Figure 4 and Figure 5 As shown, the charging pile cable management system 100 further includes: a controller 170, the controller 170 is electrically connected to the coil on the stator 150 and the coil on the braking mechanism 143 respectively, and the controller is configured to control the coil current on the stator respectively to control the output torque of the rotating shaft and control the coil current on the braking mechanism to control the braking to release or hold. The controller 170 is, for example, a circuit board. The controller 170 is powered by a wire 114. At least one output torque displacement corresponding curve formed by a plurality of preset output torques of the rotating shaft respectively corresponding to a plurality of preset displacement amounts is preset in the controller (for example, Figure 6 the rotating shaft torque control curve shown, Figure 9 the cable winding curve and the cable unwinding curve shown) so that the pulling force acting on the cable through the wire rope generated by the output torque of the rotating shaft matches the nominal gravity of the cable.

[0070] In some embodiments of the present application, the charging pile gun cable management system 100 further includes: an encoder 180, one end of the encoder 180 is connected to the controller 170, the other end of the encoder 180 is connected to the rotating shaft 140, and the encoder 180 is configured to generate the rotational displacement of the rotating shaft 140. The controller 170 defines the initial position of the cable gun cable connection end and the displacement amount of the cable gun cable connection end relative to the initial position according to the rotational displacement of the rotating shaft generated by the encoder 180.

[0071] Continuing to refer to Figure 4 and Figure 5 As shown, in some embodiments of the present application, the charging pile gun cable management system 100 further includes: a housing for accommodating the stator, rotor and rotating shaft, the top of the housing 110 has a top cover 121 and a first sealing ring 122 located between the housing and the top cover, the bottom of the housing 110 has a bottom cover 123 and a second sealing ring 124 located between the housing and the bottom cover, the bottom of the housing has a recess and a cover 125 for closing the recess and a third sealing ring 126 located between the housing and the cover.

[0072] In some embodiments of the present application, the nominal gravity of the gun line refers to the pulling force acting on the gun line connection end of the wire rope when the operator only holds the charging gun almost still, at the position of the displacement amount of the gun line connection end of the wire rope relative to the initial position at different wire ropes. Without external force, the output torque of the rotating shaft generated by the coil current on the stator always drives the wire winding disc to wind up the wire rope, that is, drives the wire winding disc to rotate in the wire-receiving direction, causing the gun line connection end of the wire rope to move towards the initial position, so as to generate a lifting force on the gun line. That is to say, without external force, the coil current on the stator always makes the rotor tend to rotate in the wire-receiving direction to generate the output torque of the rotating shaft. Matching means that the lifting force acting on the gun line through the wire rope generated by the output torque of the rotating shaft is very close to the nominal gravity of the gun line and is equivalent to the total static friction force generated by each component. For example, the difference between the lifting force acting on the gun line through the wire rope generated by the output torque of the rotating shaft and the nominal gravity of the gun line is less than or equal to 20 N. Preferably, the difference between the lifting force acting on the gun line through the wire rope generated by the output torque of the rotating shaft and the nominal gravity of the gun line is less than or equal to 15 N. More preferably, the difference between the lifting force acting on the gun line through the wire rope generated by the output torque of the rotating shaft and the nominal gravity of the gun line is less than or equal to 10 N. More preferably, the difference between the lifting force acting on the gun line through the wire rope generated by the output torque of the rotating shaft and the nominal gravity of the gun line is less than or equal to 10 N. Ideally, the difference between the lifting force acting on the gun line through the wire rope generated by the output torque of the rotating shaft and the nominal gravity of the gun line is less than or equal to 5 N, and particularly ideally less than or equal to 3 N. The smaller the difference between the two, the smaller the force required for the operator to pull the charging gun away from the charging pile, and the better the feel when pulling out the wire.

[0073] In some embodiments of the present application, the number of the plurality of displacement amounts is preset in the controller. To obtain a better feel, the more the number of the plurality of displacement amounts, the better, for example, more than 5. However, too many numbers of the plurality of displacement amounts increase the workload too much during the factory setting, and the degree of improvement in feel does not increase significantly at the same time. Therefore, for general charging piles, the number of the plurality of displacement amounts does not exceed 30. Preferably, the number of the plurality of displacement amounts is greater than or equal to 10 and less than or equal to 20. Ideally, the number of the plurality of displacement amounts is greater than or equal to 12 and less than or equal to 18, for example, 16.

[0074] In some embodiments of the present application, the output torque displacement corresponding curve between two adjacent displacement amounts among the preset plurality of displacement amounts is formed by the interpolation method. That is to say, Figure 6The shown shaft torque control curve is formed by interpolation. The interpolation method includes, but is not limited to, linear interpolation. The output torque between adjacent displacement amounts can also be any constant value of the shaft output torques corresponding to the two set points, and preferably the value of the shaft output torque corresponding to the displacement amount close to the initial position.

[0075] In some embodiments of the present application, the initial position of the wire rope gun wire connection end is determined by an offset preset relative to the wire rope zero position. The wire rope zero position is the position of the wire rope connection end corresponding to the rotational displacement of the shaft generated by the encoder read by the controller when the wire rope is recovered through a preset wire rope recovery program and the wire rope at the gun wire connection end is restricted so that the coil current on the stator is not lower than a preset zero position positioning current. The preset offset can be 0 or any value that meets the requirements of wire rope gun management.

[0076] In some embodiments of the present application, the at least one output torque displacement corresponding curve includes a wire rope retraction curve ( Figure 9 the shown wire rope retraction curve). The pulling force acting on the gun wire through the wire rope generated by the shaft output torque preset for any preset displacement amount in the wire rope retraction curve is greater than the nominal gravity of the gun wire corresponding to this preset displacement amount (gun wire gravity curve). The wire rope retraction curve does not specifically refer to the curve in the wire rope retraction state, but rather the pulling force acting on the gun wire through the wire rope generated by the shaft output torque preset for any preset displacement amount in this curve is greater than the nominal gravity of the gun wire corresponding to this preset displacement amount. In this way, the pulling force exerted by the charging pile gun wire management system on the gun wire is greater than the nominal gravity of the gun wire at any point of the displacement amount of the wire rope gun wire connection end relative to the initial position, so that the wire rope gun wire connection end connecting the gun wire has a tendency to move towards the initial position until, considering friction, the resultant force of the operator's pulling force and the nominal gravity of the gun wire is balanced with the pulling force acting on the gun wire through the wire rope generated by the wire rope retraction curve, and the gun wire hovers at the position corresponding to this displacement amount.

[0077] When the gun line hovers, if the pulling force of the operator on the gun line increases, the resultant force of the pulling force and the nominal gravity of the gun line is greater than the lifting force acting on the gun line through the wire rope generated by the wire winding curve at this position. That is to say, the rotor of the motor cannot be maintained by the output torque generated by the preset stator current corresponding to the displacement of the wire rope connection end of the gun line, which makes the rotor rotate in the wire winding direction. Under the combined action of the operator's pulling force and the nominal gravity of the gun line, the wire winding disc rotates in the wire releasing direction and releases the wire rope. Generally, the resultant force of the operator's pulling force and the nominal gravity of the gun line will decrease as the displacement of the wire rope connection end of the gun line increases. At the same time, the lifting force acting on the gun line by the wire rope decreases according to the wire winding curve until a certain displacement position is reached, where the resultant force of the operator's pulling force and the nominal gravity of the gun line is balanced with the lifting force acting on the gun line through the wire rope generated by the wire winding curve at this position, and then the gun line hovers at this position. If the pulling force of the operator on the gun line decreases, the resultant force of the operator's pulling force and the nominal gravity of the gun line decreases. At the same time, the lifting force acting on the gun line by the wire rope decreases according to the wire winding curve, and the resultant force of the operator's pulling force and the nominal gravity of the gun line is balanced with the lifting force acting on the gun line through the wire rope generated by the wire winding curve at this position, and then the gun line hovers at this position.

[0078] In some embodiments of the present application, when the wire rope lifts the gun line to the initial position, the gun line hovers at the initial position under the action of the wire rope lifting force greater than the nominal gravity of the gun line to enter the standby state. The working modes of the system of the present application include: pure torque mode. In the pure torque mode, there is no signal communication between the motor and the charging pile, and the motor only works according to the calibrated points in the torque mode ( Figure 6The shown shaft torque control curve). The torque of the motor at each point (when a certain length of cable is pulled out) should be greater than the actual weight of the cable at that position, so as to ensure that after pulling out to a certain point to complete charging, the output torque of the motor minus the weight of the cable at that point can overcome the friction force and retract the cable. In the pure torque mode, the user needs to apply a certain force to pull out the gun line. The working process of the pure torque mode is as follows: The charging gun is inserted into the charging gun seat, and the wire rope lifts the gun line to the initial position. The gun line hovers at this initial position under the action of the wire rope pulling force greater than the nominal gravity of the gun line and enters the standby state; in the standby state, if the operator pulls the gun line, when the resultant force of the pulling force of the operator pulling the gun line and the nominal gravity of the gun line is greater than the pulling force acting on the gun line through the wire rope generated by the retracting curve at this position, that is, the rotor of the motor cannot be maintained by the output torque generated by the preset stator current corresponding to the displacement of the wire rope gun line connection end that makes the rotor rotate in the retracting direction, the winding disc rotates in the wire releasing direction under the action of the resultant force of the operator's pulling force and the nominal gravity of the gun line, and the charging pile gun line management system starts to release the wire. Generally, the resultant force of the operator's pulling force and the nominal gravity of the gun line will decrease as the displacement of the wire rope gun line connection end increases, and at the same time, the pulling force acting on the gun line by the wire rope decreases according to the retracting curve until reaching a certain displacement position, where the resultant force of the operator's pulling force and the nominal gravity of the gun line is balanced with the pulling force acting on the gun line through the wire rope generated by the retracting curve at this position, then the gun line hovers at this position. If the pulling force of the operator pulling the gun line decreases, the resultant force of the operator's pulling force and the nominal gravity of the gun line decreases, and at the same time, the pulling force acting on the gun line by the wire rope decreases according to the retracting curve, and the resultant force of the operator's pulling force and the nominal gravity of the gun line is balanced with the pulling force acting on the gun line through the wire rope generated by the retracting curve at this position, then the gun line hovers at this position.

[0079] In some embodiments of the present application, after the charging gun is inserted into the vehicle charging port, the gun line hovers at the position where the resultant force of the resistance that prevents the charging gun from being pulled out of the vehicle charging port generated by the vehicle charging port on the charging gun and the nominal gravity of the gun line is balanced with the pulling force acting on the gun line through the wire rope generated according to the retracting curve, and the resistance includes the friction force between the charging gun and the vehicle charging port and / or the resistance generated by anti-disengagement.

[0080] In some embodiments of the present application, when the pulling force acting on the gun line through the wire rope generated according to the retracting curve is greater than the resultant force of the operator's pulling force and the nominal gravity of the gun line, the controller controls the rotor to drive the winding disc to rotate in the retracting direction to reduce the displacement of the wire rope gun line connection end according to the preset retracting speed displacement curve.

[0081] In some embodiments of the present application, the number of the preset multiple displacement amounts and the number of the preset multiple output torques of the rotating shaft are greater than or equal to 5 and less than or equal to 30. In some embodiments of the present application, the number of the preset multiple displacement amounts and the number of the preset multiple output torques of the rotating shaft are greater than or equal to 10 and less than or equal to 20. In some embodiments of the present application, the number of the preset multiple displacement amounts and the number of the preset multiple output torques of the rotating shaft are greater than or equal to 12 and less than or equal to 18.

[0082] In some embodiments of the present application, the lifting force acting on the gun line through the wire rope generated by the output torque of the rotating shaft differs from the nominal gravity of the gun line by less than or equal to 15 N. In some embodiments of the present application, the lifting force acting on the gun line through the wire rope generated by the output torque of the rotating shaft differs from the nominal gravity of the gun line by less than or equal to 10 N. In some embodiments of the present application, the lifting force acting on the gun line through the wire rope generated by the output torque of the rotating shaft differs from the nominal gravity of the gun line by less than or equal to 5 N. In some embodiments of the present application, the lifting force acting on the gun line through the wire rope generated by the output torque of the rotating shaft differs from the nominal gravity of the gun line by less than or equal to 3 N.

[0083] In some embodiments of the present application, after the controller 170 receives a brake signal, the controller controls the brake mechanism to brake and prevent the rotating shaft from rotating, and reduces or disconnects the coil current of the stator. When the controller receives a brake release signal, the controller controls the brake mechanism to release the brake so that the rotating shaft can rotate. The brake signal and the brake release signal can be switch signals or communication signals. For example, a switch signal generated by an induction device provided on the charging pile. Further, the induction device is installed on the charging gun or the charging gun seat of the charging pile, and the signal generated when it senses that the charging gun is pulled out of the charging gun seat is the brake release signal, and the signal generated when it senses that the charging gun is inserted into the charging gun seat is the brake signal. The brake signal and the brake release signal can also be communication signals generated by the main board of the charging pile or other devices according to a preset communication protocol.

[0084] In some embodiments of the present application, the working mode of the system includes: a torque mode with a brake signal. Refer to Figure 10As shown in the figure, the working process is as follows: Initially, it is in the standby state. At this time, the motor is turned off, and the brake holds the motor tightly to suspend the gun line at the initial position. After the user pulls out the charging gun, after the controller 170 receives the brake release signal, it controls the coil on the brake mechanism 143 to be energized to release the brake mechanism 143, and controls the coil on the stator to be energized to start the motor. Then the system works in the pure torque mode described above, including wire release and wire retraction. Until the charging is completed, after wire retraction, the charging gun is inserted into the charging gun seat. After the controller 170 receives the brake signal, it controls the brake mechanism 143 to hold tightly, and controls the coil on the stator to be de-energized to turn off the motor and return to the standby state.

[0085] In some embodiments of the present application, with reference to Figure 9 As shown in the figure, the system further includes: The at least one output torque displacement corresponding curve further includes a wire release curve. The pulling force generated by the output torque of the rotating shaft preset for any preset displacement amount in the wire release curve acting on the gun line through the wire rope is less than the nominal gravity of the gun line corresponding to this preset displacement amount.

[0086] In some embodiments of the present application, the system further includes: When the controller receives the brake release signal, the controller also controls the pulling force generated by the output torque of the rotating shaft acting on the gun line through the wire rope according to the wire release curve. The pulling force generated by the output torque of the rotating shaft preset for any preset displacement amount in the wire release curve acting on the gun line through the wire rope is smaller than the nominal gravity of the gun line corresponding to this preset displacement amount, so that the pulling force required by the operator considering the friction effect is smaller than that of the wire retraction curve, and the operator's feeling of pulling out the gun line is better. Even when the operator needs to pull out the gun line, controlling with the wire release curve can achieve pulling out the gun line without an additional pulling force greater than the force of the nominal gravity of the gun line.

[0087] In some embodiments of the present application, the system further includes: When the controller receives the gun removal signal that the charging gun is pulled out from the vehicle charging port, the controller controls the pulling force generated by the output torque of the rotating shaft acting on the gun line according to the wire retraction curve.

[0088] In some embodiments of the present application, the system further includes: When the controller receives the gun removal signal generated by the charging gun being pulled out from the vehicle charging port, the controller also controls the brake mechanism to release the brake so that the rotating shaft can rotate.

[0089] In some embodiments of the present application, the system further includes: after the controller receives a signal to be charged generated by the charging gun being inserted into the charging port of the vehicle, the controller controls the brake mechanism to brake to prevent the shaft from rotating, and reduces or disconnects the current of the stator. The gun removal signal and the signal to be charged can be obtained through the signal line of the charging gun itself, without the need for additional sensors. The gun removal signal and the signal to be charged can also be sent to the controller through a specific communication protocol after the motherboard or other device receives the above-mentioned signal of the charging gun.

[0090] In some embodiments of the present application, the working mode of the system includes: variable torque mode. Figure 10 As shown, the working process is as follows: the initial state is standby, at which the motor is turned off, and the brake holds the motor so that the gun line is suspended at the initial position; after the user pulls out the charging gun from the charging gun seat, the controller 170 receives the brake release signal and controls the coil on the brake mechanism 143 to energize so that the brake mechanism 143 is released, and controls the coil on the stator to energize so that the motor starts; then the system Figure 9 After the charging gun is inserted into the charging port of the electric vehicle, it enters the charging state. At this time, the gun line is controlled to hover, which can be achieved by braking or by enabling the motor. After the charging is completed, the user pulls the gun out of the charging port. Figure 9 After winding the wire, the charging gun is inserted into the charging gun seat, and the controller 170 controls the brake mechanism 143 to hold tightly after receiving the brake signal, controls the coil on the stator to cut off the power to turn off the motor, and returns to the standby state.

[0091] refer to Figure 8 As shown, the embodiment of the present application also provides a control method for a charging pile, including:

[0092] Step S1: line-releasing state, in which the rotating shaft output torque of the charging pile gun line management system is controlled to release the line while balancing the nominal gravity of the gun line;

[0093] Step S2: Charging state, in the charging state, controlling the rotating shaft of the charging pile gun line management system to balance the nominal gravity of the gun line so that the gun line is suspended;

[0094] Step S3: In the wire-reeling state, the rotating shaft output torque of the charging pile gun wire management system is controlled to reel in the wire while balancing the nominal gravity of the gun wire;

[0095] Step S3: standby state. In the standby state, the rotating shaft of the charging pile gun line management system is controlled to balance the nominal gravity of the gun line so that the gun line is suspended.

[0096] It should be noted that the steps S1, S2, S3, and S4 do not represent the actual step sequence, but only represent different states and corresponding control methods in the control method of the present application.

[0097] In the control method of the charging pile described in the present application, during the user's use of the charging gun, on the one hand, the brake mechanism balances the nominal gravity of the gun line to avoid the gun line falling to the ground and being worn, thereby increasing the service life of the gun line; on the other hand, a reverse torque is output through the rotating shaft to reduce the user's operation difficulty and improve the user experience. It should be noted that the nominal gravity of the gun line refers to the actual acting force on the rotating shaft of the charging pile gun line management system when the center of gravity of the gun line changes at different positions.

[0098] The following describes the management method of the charging pile in combination with the charging pile and the charging pile gun line management system provided in the embodiments of the present application.

[0099] In some embodiments of the present application, the controller 170 receives the rotational displacement of the rotating shaft 140 and controls the coil current on the stator according to the rotational displacement of the rotating shaft 140. The rotational displacement of the rotating shaft 140 represents the released length of the wire rope on the wire reel 130. That is to say, in fact, the controller 170 controls the coil current on the stator according to the released length of the wire rope on the wire reel 130.

[0100] In some embodiments of the present application, the control method of the controller 170 is a pure torque control method. In the pure torque control method, no additional signals need to be set, and the controller 170 controls the rotating shaft according to the sensed change in the acting force on the rotating shaft and the rotational displacement of the rotating shaft.

[0101] In the pure torque control method, the charging pile gun line management system and the wire rope work similar to a rubber band. The torque control curve of the rotating shaft is slightly larger than the actual gun line gravity curve. When the user holds the charging gun by hand, as long as a force needs to be applied and this force is greater than the torque difference, the rotating shaft can sense it and perform corresponding movements. When paying out the wire: when the user holds the charging gun by hand and drives the gun line to pull the rotating shaft, the controller senses through the coil current that the force acting on the rotating shaft is greater than the torque difference (that is, the force received by the rotating shaft of the charging pile gun line management system is greater than the nominal gravity of the gun line and the difference is greater than the torque difference), and enters the wire-paying state from the standby state, and controls the torque of the rotating shaft to Figure 6Pay out the cable according to the shown torque control curve of the rotating shaft. The torque of the rotating shaft is greater than the nominal gravity of the charging cable throughout the pay-out process to prevent it from falling to the ground, and the torque difference is not large (generally less than 20 N), so that the user can easily pull the cable. When taking in the cable: After the user finishes charging and pulls out the charging gun from the vehicle, during the process of approaching the charging pile, the controller senses that the load becomes smaller, and the difference between the actual load at the corresponding position and the torque control curve of the rotating shaft is greater than the torque difference (that is, the force on the rotating shaft of the charging pile cable management system is less than the nominal gravity of the charging cable), and it enters the cable take-in state from the charging state, and controls the torque of the rotating shaft to Figure 6 Take in the cable according to the shown torque control curve of the rotating shaft. The torque of the rotating shaft is greater than the nominal gravity of the charging cable throughout the pay-out process to prevent it from falling to the ground, and it can automatically take in the cable without the user exerting force. During the user's use of the charging gun, the controller can sense the rotational displacement of the rotating shaft (i.e., the position of the charging gun) and the torque of the rotating shaft (the load on the rotating shaft), and control the actual torque of the rotating shaft according to the rotational displacement of the rotating shaft and the torque of the rotating shaft based on Figure 6 The shown schematic diagram of the preset torque of the rotating shaft. In addition, during the charging process and after the charging gun is returned to the charging pile, there is no additional force acting on the rotating shaft, and the force on the rotating shaft is equal to the nominal gravity of the charging cable. At this time, it is judged whether the charging gun is inserted into the charging interface or the charging gun holder, and it enters the standby state or the charging state. To prevent the charging cable from falling, it is only necessary to keep the torque of the rotating shaft equal to the nominal gravity of the charging cable to maintain the balance of the charging cable.

[0102] In addition, in the torque control method, the rotation speed of the rotating shaft and the pay-out and take-in speeds of the cable can also be controlled. The corresponding speed curve can be set according to the torque control curve of the rotating shaft. Throughout the whole journey, the torque control curve of the rotating shaft and the speed curve can be divided into 16 segments (at least 5 segments), and the spacing of each segment can be freely set, and the torque value of each segment needs to be calibrated according to the load weight situation. When paying out the cable, the set torque is basically balanced with the gravity of the charging cable, so that the user can slightly apply a downward pulling force to break the balance and let the charging cable go down; when taking in the cable, according to the set parameter situation, generally the torque control curve of the rotating shaft will be slightly larger than when paying out the cable. At this time, as long as there is no external force pulling the charging cable, the torque of the rotating shaft greater than the gravity of the charging cable will take the cable back, and the take-in speed will also change in real time according to the set speed curve. Generally, the closer to the charging pile, the slower the take-in speed needs to be.

[0103] In some embodiments of the present application, the control method of the controller 170 is a variable torque control method. In this control method, the controller 170 also receives a feedback signal and controls the coil current on the stator according to the feedback signal, and the feedback signal includes a take-up signal, a pay-out signal, a standby signal, and a charging signal. As the name implies, the take-up signal means that the user needs to return the charging gun and retract the gun line after using the charging gun; the pay-out signal means that the user needs to release the gun line to the position of the electric vehicle when using the charging gun for charging; the standby signal means when the charging gun is not in use and is placed on the charging pile; the charging signal means when the user is using the charging gun to charge the electric vehicle.

[0104] In some embodiments of the present application, after receiving the line-releasing signal, the controller 170 controls the charging pile gun line management system 100 to enter the line-releasing state. In the line-releasing state, the controller 170 controls the coil on the brake mechanism 143 to be energized to release the brake mechanism 143. The controller 170 controls the coil on the stator to be energized to cause the rotating shaft to generate torque and start to release the line. The torque generated by the rotating shaft is in the second direction (i.e., the line-reeling direction, which is opposite to the direction of the force of the gun line on the rotating shaft, thereby balancing the force of the gun line on the rotating shaft). The torque generated by the rotating shaft only needs to be slightly greater than the force of the gun line on the rotating shaft. The user only needs to apply a slight force to pull the gun line, which reduces the difficulty of use for the user. The magnitude of the torque generated by the rotating shaft when releasing the line is determined by the line-releasing torque curve. The line-releasing torque control curve is slightly lower than Figure 6 When releasing the line, a smaller release torque curve is used, and the user can start releasing the line with a little force. Figure 6 The difference between the shaft torque control curves shown decreases as the shaft rotational displacement increases.

[0105] In some embodiments of the present application, after receiving the charging signal, the controller 170 controls the charging pile gun line management system 100 to enter the charging state, the controller 170 controls the coil on the brake mechanism to cut off the power to make the brake mechanism hold tightly (after the brake mechanism holds the shaft tightly, it pulls the gun line to make it hover to prevent it from falling to the ground), the controller 170 controls the coil on the stator to cut off the power to make the shaft stop generating torque (when the brake mechanism is working, the stator coil can be cut off to save energy), and the gun line is suspended. Of course, it is also possible to use the shaft to generate reverse torque to suspend the gun line instead of using the brake mechanism.

[0106] In some embodiments of the present application, after receiving the take-up signal, the controller 170 controls the charging pile gun line management system 100 to enter the take-up state, the controller 170 controls the coil on the brake mechanism to energize to release the brake mechanism, and the controller 170 controls the coil on the stator to energize to cause the shaft to generate torque and start to take up the line. The torque generated by the shaft is in the second direction (i.e., the take-up direction, which is opposite to the direction of the force of the gun line on the shaft, thereby balancing the force of the gun line on the shaft). The torque generated by the shaft needs to be slightly greater than the force of the gun line on the shaft, so that the shaft can be automatically taken up without the user exerting force, thereby reducing the difficulty of use for the user. The magnitude of the torque generated when the shaft takes up the line is determined by the take-up torque curve, and the take-up torque control curve is slightly higher than Figure 6 When reeling in the line, a larger reeling torque curve is used, and the shaft will slightly drive the gun line to automatically reset. Figure 6 The difference between the shaft torque control curves shown decreases as the shaft rotational displacement increases.

[0107] In some embodiments of the present application, the controller 170 controls the charging pile gun line management system 100 to enter a standby state after receiving the standby signal, the controller 170 controls the coil on the brake mechanism to cut off the power to make the brake mechanism tighten, and the controller controls the coil on the stator to cut off the power to make the shaft stop generating torque, and the gun line suspends. Of course, the brake mechanism may not be used, but the shaft may be used to generate reverse torque to suspend the gun line.

[0108] In other embodiments of the present application, the control method of the controller 170 includes a remote control signal and torque combined control method. In some embodiments of the present application, the controller receives a remote control signal and controls the coil current on the stator according to the remote control signal. The remote control signal may come from a remote control device. The remote control device may be set on a charging pile and manually started by a user. The remote control device may also be set on a mobile terminal, such as a small program on a user's mobile phone.

[0109] In some situations, for example, when the charging gun is located at a high place and the user cannot use it directly, the user can manually start the remote control device to send a remote control signal. After receiving the remote control signal, the controller removes the charging gun and controls the shaft to release the wire for a certain distance until the user gets the charging gun, and then switches to the torque control method to continue to cooperate with the user to release the wire. After the user finishes using the charging gun, the torque control method can be used to reel in the wire.

[0110] In some embodiments of the present application, the actual starting points of winding in and unwinding of the wire rope are slightly longer than the theoretical origin points, leaving a safety distance to prevent the wire rope from impacting the outlet. After each winding in and unwinding, the origin point is recalibrated. A safety distance is also left at the end of the wire rope so that in case of an accident, such as a user tripping, a certain length of the wire rope can still be unwound.

[0111] The charging pile gun line management system provided by the embodiments of the present application connects the winding disc and the gun line with a wire rope. The torque of the inner rotor in the charging pile gun line management system is almost balanced with the weight of the gun line. In this way, when the user operates the charging, the user only needs to lift the weight of the charging gun to control the movement of the charging gun to the vehicle position for charging, greatly reducing the operation intensity and improving the charging experience.

[0112] The beneficial effects that the embodiments of the present application may bring include but are not limited to: under the control of the charging pile gun line management system 100 and / or the charging pile, after the charging gun 53 is used up and during the charging process, the gun line can be kept from falling to the ground, thereby improving the service life of the gun line 51; and during the user's use process, it assists the user in winding in or unwinding the wire, balances the gravity of the gun line 51, and improves the user experience.

[0113] The control method of the charging pile gun line management system provided by the embodiments of the present application connects the winding disc and the gun line with a wire rope. The torque of the inner rotor in the charging pile gun line management system is almost balanced with the weight of the gun line. In this way, when the user operates the charging, the user only needs to lift the weight of the charging gun to control the movement of the charging gun to the vehicle position for charging, greatly reducing the operation intensity and improving the charging experience.

[0114] The basic concepts have been described above. Obviously, for those skilled in the art, the above detailed disclosure is only an example and does not constitute a limitation to this specification. Although not explicitly stated here, those skilled in the art may make various modifications, improvements, and corrections to the present application. Such modifications, improvements, and corrections are suggested in this specification, so such modifications, improvements, and corrections still fall within the spirit and scope of the exemplary embodiments of the present application.

[0115] It should be noted that in the description of the present application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection; it can be a rotational connection, a sliding connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood in combination with specific situations.

[0116] In addition, when terms such as "first", "second", "third", etc. are used in the specification of the present application to describe various features, these terms are only used to distinguish these features and should not be construed as indicating or implying a relationship, relative importance, or implicitly specifying the number of the indicated features among the features.

[0117] In addition, the specification of the present application describes exemplary embodiments by referring to idealized exemplary cross-sectional views and / or plan views and / or three-dimensional views. Therefore, differences from the illustrated shapes due to, for example, manufacturing techniques and / or tolerances are foreseeable. Accordingly, the exemplary embodiments should not be construed as being limited to the shapes of the regions shown herein, but should include deviations in the shapes caused by, for example, manufacturing. Therefore, the regions shown in the figures are substantially schematic, and their shapes are not intended to show the actual shape of the regions of the device nor to limit the scope of the exemplary embodiments.

[0118] At the same time, the present application uses specific words to describe the embodiments of this specification. For example, "an embodiment", "one embodiment", and / or "some embodiments" mean a certain feature, structure, or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that "an embodiment" or "one embodiment" or "an alternative embodiment" mentioned twice or more at different positions in the present application does not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of the present application can be appropriately combined.

[0119] Similarly, it should be noted that, in order to simplify the presentation of the disclosure of the present application and thus assist in the understanding of one or more embodiments of the application, in the foregoing description of the embodiments of the present application, sometimes multiple features are grouped into one embodiment, drawing, or description thereof. However, this method of disclosure does not mean that the features required by the subject matter of the present application are more than those recited in the claims. In fact, the features of the embodiments are fewer than all the features of the individual embodiments disclosed above.

[0120] Finally, it should be understood that the embodiments described in the present application are only used to illustrate the principles of the embodiments of the present application. Other variations may also fall within the scope of the present application. Therefore, by way of example and not limitation, alternative configurations of the embodiments of the present application may be considered to be in accordance with the teachings of the present application. Accordingly, the embodiments of the present application are not limited to the embodiments explicitly introduced and described in the present application.

Claims

1. A charging pile gun line management system, characterized in that: include: A motor, comprising a stator, a rotor and a rotating shaft fixedly connected to the rotor; A winding drum, the winding drum is fixedly connected to the rotating shaft; A wire rope, one end of which is fixed to the wire winding drum, and the other end of which is used to connect with the gun line, and the wire rope can be wound on the wire winding drum; An encoder, the encoder is used to generate the rotational displacement of the shaft; A controller, the controller is electrically connected to the coil on the stator, the controller is configured to control the coil current on the stator to control the output torque of the shaft, the controller defines an initial position of a wire rope gun wire connection end and a displacement of the wire rope gun wire connection end relative to the initial position according to the rotational displacement of the shaft generated by the encoder; The controller is pre-arranged with at least one output torque displacement corresponding curve formed by a plurality of preset shaft output torques corresponding one-to-one to the plurality of preset displacements, so that the pulling force generated by the shaft output torque acting on the gun line through the wire rope matches the nominal gravity of the gun line.

2. The charging pile gun line management system according to claim 1, characterized in that: The output torque displacement corresponding curve between two adjacent displacements in the preset multiple displacements is formed by interpolation method.

3. The charging pile gun line management system according to claim 1, characterized in that: The initial position of the gun wire connection end of the wire rope is determined by a preset offset relative to the zero position of the wire rope. The zero position of the wire rope is recovered by a preset wire rope recovery program. When the wire rope is restricted at the gun wire connection end of the wire rope so that the coil current on the stator is not lower than the preset zero position positioning current, the controller reads the position of the wire rope connection end corresponding to the rotational displacement of the rotating shaft generated by the encoder.

4. The charging pile gun line management system according to claim 3, characterized in that: The at least one output torque displacement corresponding curve includes a wire-winding curve, and the pulling force on the gun line through the wire rope generated by the output torque of the rotating shaft preset by any preset displacement in the wire-winding curve is greater than the nominal gravity of the gun line corresponding to the preset displacement.

5. The charging pile gun line management system according to claim 4, characterized in that: When the gun line is pulled up by the wire rope and is located at the initial position, the gun line is suspended at the initial position under the action of the wire rope pulling force which is greater than the nominal gravity of the gun line, so as to enter the standby state.

6. The charging pile gun line management system according to claim 4, characterized in that: After the charging gun is inserted into the vehicle charging port, the gun line hovers at the vehicle charging port to generate a displacement balance between the resistance to the charging gun being pulled out of the vehicle charging port and the nominal gravity of the gun line and the pulling force on the gun line generated by the wire rope according to the winding curve, wherein the resistance includes the friction between the charging gun and the vehicle charging port and / or the resistance generated by the anti-tripping buckle.

7. The charging pile gun line management system according to claim 4, characterized in that: When the pulling force acting on the gun line through the wire rope according to the wire winding curve is greater than the combined force of the operator's pulling force and the nominal gravity of the gun line, the controller controls the rotor to drive the winding drum to rotate in the wire winding direction according to the preset wire winding speed displacement curve to reduce the displacement of the wire rope gun line connection end.

8. The charging pile gun line management system according to claim 1, characterized in that: The number of the preset multiple displacements and the preset multiple shaft output torques is greater than or equal to 5 and less than or equal to 30.

9. The charging pile gun line management system according to claim 8, characterized in that: The number of the preset multiple displacement amounts and the preset multiple shaft output torques is greater than or equal to 10 and less than or equal to 20.

10. The charging pile gun line management system according to claim 9, characterized in that: The number of the preset multiple displacements and the preset multiple shaft output torques is greater than or equal to 12 and less than or equal to 18.

11. The charging pile gun line management system according to claim 1, characterized in that: The difference between the pulling force generated by the output torque of the rotating shaft acting on the gun line through the wire rope and the nominal gravity of the gun line is less than or equal to 15N.

12. The charging pile gun line management system according to claim 11, characterized in that: The difference between the pulling force generated by the output torque of the rotating shaft acting on the gun line through the wire rope and the nominal gravity of the gun line is less than or equal to 10N.

13. The charging pile gun line management system according to claim 12, characterized in that: The difference between the pulling force generated by the output torque of the rotating shaft acting on the gun line through the wire rope and the nominal gravity of the gun line is less than or equal to 5N.

14. The charging pile gun line management system according to claim 13, characterized in that: The difference between the pulling force generated by the output torque of the rotating shaft acting on the gun line through the wire rope and the nominal gravity of the gun line is less than or equal to 3N.

15. The charging pile gun line management system according to claim 4, characterized in that: Also includes: A brake mechanism is connected to the rotating shaft, and is used to prevent the rotating shaft from rotating.

16. The charging pile gun line management system according to claim 15, characterized in that: After the controller receives the brake signal, the controller controls the brake mechanism to apply the brake to prevent the shaft from rotating, and reduces or disconnects the current of the stator.

17. The charging pile gun line management system according to claim 15, characterized in that: When the controller receives a brake release signal, the controller controls the brake mechanism to release the brake so that the shaft can rotate.

18. The charging pile gun line management system according to claim 17, characterized in that: Also includes: The at least one output torque displacement corresponding curve further comprises a wire release curve, wherein the pulling force on the gun line through the wire rope generated by the output torque of the rotating shaft preset by any preset displacement in the wire release curve is less than the nominal gravity of the gun line corresponding to the preset displacement.

19. The charging pile gun line management system according to claim 18, characterized in that: Also includes: When the controller receives a brake release signal, the controller also uses the line pay-off curve to control the pulling force generated by the output torque of the rotating shaft acting on the gun line through the wire rope.

20. The charging pile gun line management system according to claim 19, characterized in that: Also includes: When the controller receives a gun removal signal indicating that the charging gun is removed from the charging port of the vehicle, the controller uses the wire reel curve to control the pulling force generated by the output torque of the rotating shaft acting on the gun wire through the wire rope.

21. The charging pile gun line management system according to claim 20, characterized in that: Also includes: When the controller receives a gun-pulling signal generated by pulling the charging gun out of the vehicle charging port, the controller also controls the brake mechanism to release the brake so that the rotating shaft can rotate.

22. The charging pile gun line management system according to claim 19, characterized in that: Also includes: After the controller receives a charging signal generated by the charging gun being inserted into the charging port of the vehicle, the controller controls the brake mechanism to apply the brake to prevent the shaft from rotating, and reduces or disconnects the current of the stator.

23. A control method for a charging pile gun line management system, characterized in that: include: A line-releasing state, in which the rotating shaft output torque of the charging pile gun line management system is controlled to release the line while balancing the nominal gravity of the gun line; Charging state, in the charging state, controlling the rotating shaft of the charging pile gun line management system to balance the nominal gravity of the gun line so that the gun line is suspended; A wire-reeling state, in which the rotating shaft output torque of the charging pile gun wire management system is controlled to reel in the wire while balancing the nominal gravity of the gun wire; Standby state: In the standby state, the rotating shaft of the charging pile gun line management system is controlled to balance the nominal gravity of the gun line so that the gun line is suspended.

24. The control method according to claim 23, characterized in that: When the force applied to the rotating shaft is greater than the nominal gravity of the gun line and the difference is greater than the torque difference, the line-releasing state is entered, and the rotating shaft is controlled to release the line according to the rotating shaft torque control curve.

25. The control method according to claim 24, characterized in that: When the force applied to the rotating shaft changes from being greater than the nominal gravity of the gun line to being equal to the nominal gravity of the gun line, the rotating shaft enters a charging state, and the torque of the rotating shaft is controlled to be equal to the nominal gravity of the gun line.

26. The control method according to claim 25, characterized in that: When the force applied to the rotating shaft is less than the nominal weight of the gun line, the line-reeling state is entered, and the rotating shaft is controlled to reel in the line according to the rotating shaft torque control curve.

27. The control method according to claim 26, characterized in that: When the force applied to the rotating shaft changes from being less than the nominal gravity of the gun line to being equal to the nominal gravity of the gun line, the rotating shaft enters a standby state, and then the torque of the rotating shaft is controlled to be equal to the nominal gravity of the gun line.

28. The control method according to claim 23, characterized in that: The charging gun or charging gun seat of the charging pile gun line management system is provided with a sensing device. When the sensing device senses that the charging gun is pulled out of the charging gun seat, it enters a line-releasing state, controls the brake mechanism to release the rotating shaft, and controls the rotating shaft to release the line according to the line-releasing torque control curve.

29. The control method according to claim 28, characterized in that: When the sensing device senses that the charging gun is inserted into the charging port of the electric vehicle, the charging state is entered, the brake mechanism is controlled to hold the rotating shaft tightly, the rotating shaft is controlled to stop outputting torque, and the gun line is suspended.

30. The control method according to claim 29, characterized in that: When the sensing device senses that the charging gun is pulled out of the charging interface of the electric vehicle, it enters a wire-reeling state, controls the brake mechanism to release the rotating shaft, and controls the rotating shaft to reel in the wire according to the wire-reeling torque control curve.

31. The control method according to claim 30, characterized in that: When the sensing device senses that the charging gun is inserted into the charging gun seat, it enters a standby state, controls the brake mechanism to hold the rotating shaft, controls the rotating shaft to stop outputting torque, and the gun line is suspended.

32. The control method according to claim 23, characterized in that: The charging pile is provided with a remote control device, and the charging pile gun line management system is controlled by the remote control device to release the line.

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