Power supply gun, power supply equipment and power supply method

Abstract

The invention provides a power supply gun, power supply equipment and a power supply method. The power supply gun comprises a gun head, a wire pipe and a power cable. The gun head comprises a shell and is provided with an inner space formed by the shell, a first opening and a second opening, the edge of the first opening in the shell is used for being connected with power receiving equipment; a channel is formed in the line pipe; one end of the line pipe is connected with one end of the shell, and a channel of the line pipe communicates with the inner space of the gun head through the second opening. The other end of the wire pipe is connected with a power supply equipment body; one end of the power cable is movably arranged in the wire pipe; and the other end of the power cable is conductively connected with a power supply equipment body. According to the power supply gun, the power cable is movably arranged in the wire pipe, the weight of the whole power supply gun is reduced by taking back the gun wire in the process that a user inserts and pulls out the power supply gun, and therefore the use convenience of the power supply gun is improved.

Description

Technical Field

[0001] The present application relates to the field of new energy technologies, and more particularly, to a power supply gun, a power supply device, and a power supply method. Background Art

[0002] A power supply gun is usually used to supply power to a power receiving device. During use, the user plugs the power supply gun into the power receiving device to supply power, and after the power supply is completed, the user unpluggs the power supply gun from the power receiving device. For example, a charging gun for charging a new energy vehicle.

[0003] Currently, the power supply gun mainly includes a gun head and a power cable. The power cable is used to supply power from the power supply device to the gun head so that the gun head can supply power to the power receiving device. However, such a power supply gun is usually relatively heavy. Especially for some people with relatively small strength, it is quite laborious to insert and unplug the gun, resulting in the fact that such a power supply gun is not convenient enough for people with relatively small strength.

[0004] That is to say, the usability of the commonly used power supply guns currently is not high enough. Summary of the Invention

[0005] The purpose of the present application is to provide a power supply gun, a power supply device, and a power supply method. By movably arranging the power cable in a wire tube, the overall weight of the power supply gun is reduced by retracting the gun wire during the process of the user inserting and unplugging the power supply gun, thereby improving the usability of the power supply gun.

[0006] In a first aspect, the present application provides a power supply gun, including a gun head, a wire tube, and a power cable; The gun head includes a housing, and has an internal space formed by the housing and a first opening and a second opening located at both ends of the housing; the edge of the first opening on the housing is used to connect with the power receiving device; the wire tube has a channel inside; one end of the wire tube is connected to one end of the housing, and the channel of the wire tube communicates with the internal space of the gun head through the second opening; the other end of the wire tube is used to connect with the main body of the power supply device; one end of the power cable is movably arranged inside the wire tube; the other end of the power cable is used to conductively connect with the main body of the power supply device; the power cable is configured to: under the drive of the main body of the power supply device, stretch between both ends in the channel of the wire tube, and when moving to one end of the channel facing the first opening, conductively connect with the power receiving device.

[0007] In the case where the above-mentioned power supply gun is idle, the power supply device body can drive the power cable to contract, so that the end of the power cable located inside the cable conduit retreats to the end where the cable conduit is connected to the power receiving device body. In this way, when the user holds the power supply gun and inserts it into the power receiving device, there is no need to overcome the gravity of the cable, thereby reducing the weight of the power supply gun during the gun insertion process. When the user has finished inserting the gun and needs to start power supply, the winding mechanism of the power supply device body can be controlled to unwind, so that the end of the power cable located inside the cable conduit moves towards the first opening, and through the space provided by the first opening, it is electrically connected to the power receiving device, thereby supplying power to the power receiving device. After the power supply is completed, the power supply device body can also drive the power cable to contract, so that the end of the power cable located inside the cable conduit retreats to the end where the cable conduit is connected to the power receiving device body. In this way, when the user removes the gun and holds the power supply gun to return it to its original position, there is also no need to overcome the gravity of the cable, thereby reducing the weight of the power supply gun during the gun removal process. That is to say, by movably arranging the power cable inside the cable conduit and retracting the gun cable during the process of the user inserting and removing the power supply gun to reduce the overall weight of the power supply gun, the practical convenience of the power supply gun is improved.

[0008] In combination with the first aspect, optionally, the gun head further includes a power supply terminal; the power supply terminal is arranged at the first opening on the housing; one electrical connection end of the power supply terminal faces the internal space; the other electrical connection end of the power supply terminal faces the external space and is used to connect with the power receiving terminal of the power receiving device to supply power to the power receiving device; an electrical connector is arranged at the end of the power cable located inside the channel; when the end of the power cable located inside the channel moves to the first opening, the electrical connector is electrically connected to one end of the power supply terminal facing the internal space.

[0009] For the above-mentioned power supply gun, by arranging a power supply terminal at the first opening and using it to connect the power cable and the power receiving device to achieve electrical connection between the power cable and the power receiving device, it is not necessary to directly drive the power cable to be electrically connected to the power receiving device during the process of driving the power cable to make the end located inside the channel close to the first opening. Instead, when the power supply gun is inserted into the power receiving device, one end of the power supply terminal has already completed electrical connection with the power receiving device. In this case, only by driving the power cable to contact the other end of the power supply terminal can electrical connection between the power cable and the power receiving device be achieved. Thereby reducing the probability of failure in the electrical connection between the power supply gun and the power receiving device caused by the method of directly driving the power cable to contact the conductive device to achieve electrical connection. Correspondingly, it also improves the stability of the electrical connection between the power supply gun and the power receiving device, thereby further improving the use convenience of the power supply gun.

[0010] In combination with the first aspect, optionally, a locking mechanism is further provided in the internal space of the gun head; one end of the power cable located in the channel has a locking portion adapted to the locking mechanism; the locking mechanism is configured to limit the movement of the locking portion away from the first opening when the power cable is electrically connected to the power receiving device.

[0011] In the above power supply gun, by providing a locking mechanism in the internal space of the gun head, it is used to lock the power cable when the power cable is electrically connected to the power receiving conductor, so as to prevent the power cable from retracting, further improving the stability of the power supply gun during the power supply process, and correspondingly further improving the convenience of use of the power supply gun.

[0012] In combination with the first aspect, optionally, the locking mechanism includes a rotating member and an electronically controlled linear expander; the rotating member has a connecting portion, and the connecting portion is rotatably connected to the inside of the housing; the connecting portion is located between the two ends of the rotating member and does not coincide with the center of gravity of the rotating member; wherein, the rotation axis of the rotating member is separated from the locking portion, and the rotation axis is not parallel to the arrangement direction of the first opening and the second opening; the electronically controlled linear expander is provided on the inner wall of the housing; the minimum distance between the electronically controlled linear expander and the inner wall of the housing is less than the minimum distance between the rotating member and the inner wall of the housing; the electronically controlled linear expander has a telescopic member, and the telescopic trajectory of the telescopic member intersects with the rotatable trajectory of the first end of the rotating member; the rotatable trajectory of the second end of the rotating member intersects with the movable trajectory of the locking portion; the rotating member is configured to push the second end of the rotating member on the side of the second end of the rotating member facing away from the first opening by the locking portion during the process of the locking portion moving towards the first opening, and be abutted by the rotating member on the side of the second end of the rotating member facing the first opening; the electronically controlled linear expander is configured to control the telescopic member to move to a position intersecting with the rotatable trajectory of the first end of the rotating member to limit the rotation of the rotating member when the power cable is electrically connected to the power receiving device.

[0013] In the above power supply gun, the combination of the electronically controlled expander and the rotating member is used to lock the locking portion, realizing the automatic locking of the cable, thereby further improving the convenience of use of the power supply gun.

[0014] In combination with the first aspect, optionally, a support sleeve is further provided on the inner wall and / or outer wall of the wire tube; the support sleeve is attached to the inner wall and / or outer wall of the wire tube; wherein, the elastic coefficient of the support sleeve is greater than the elastic coefficient of the wire tube.

[0015] The above-mentioned power supply gun is provided with a support sleeve on the inner wall and / or outer wall, which plays a role in preventing the wire tube from bending, thereby almost avoiding the blockage of the power cable when it expands in the wire tube. Eventually, the failure rate of the power supply gun is reduced.

[0016] In a second aspect, the present application provides a power supply device, including a power supply device body and the power supply gun described in the first aspect; one end of the wire tube of the power supply gun that is not connected to the gun head of the power supply gun is connected to the power supply device body; one end of the power cable of the power supply gun that is not located in the wire tube of the power supply gun is electrically connected to the power supply device body.

[0017] The above-mentioned power supply device has the same beneficial effects as the power supply gun provided in the above first aspect or any optional implementation manner of the first aspect, and will not be elaborated here.

[0018] In combination with the second aspect, optionally, a winding mechanism is provided inside the power supply device body; the power cable of the power supply gun is wound on the winding mechanism; the winding mechanism is configured to drive the power cable to stretch in the wire tube of the power supply gun by winding and unwinding the power cable.

[0019] The above-mentioned power supply device realizes the telescopic movement of the power cable in the wire tube through the winding and unwinding of the power cable by the winding mechanism, eliminating the need for relevant mechanisms for controlling the telescopic movement of the power cable on the power supply gun, which simplifies both the structure of the power supply gun and the structure of the power supply device body.

[0020] In a second aspect, the present application provides a power supply method applied to the power supply device described in the first aspect; the method includes: controlling the winding mechanism to unwind the power cable; after detecting that the power cable is electrically connected to the power receiving device, pausing the winding of the winding mechanism and controlling the power supply device body to start power supply; and after detecting that the power receiving device does not need power supply, controlling the winding mechanism to wind the power cable.

[0021] The above-mentioned power supply method has the same beneficial effects as the power supply device provided in the above second aspect or any optional implementation manner of the second aspect, and will not be elaborated here.

[0022] In combination with the third aspect, optionally, the controlling the winding mechanism to unwind the power cable includes: when detecting that the winding of the winding mechanism is blocked, pausing the winding of the winding mechanism; and when not detecting that the winding of the winding mechanism is blocked, pausing the winding of the winding mechanism until detecting that the power cable is electrically connected to the power receiving device.

[0023] The power supply method described above almost avoids the occurrence of secondary faults caused by continuing to control the winding mechanism to wind when the winding mechanism is blocked, by suspending the winding of the winding mechanism when the winding mechanism detects that the winding mechanism is blocked, and controlling the winding mechanism to wind until the power cable is successfully connected to the power receiving device when the winding mechanism is not blocked. This protects the power supply device and improves the stability of the operation of the power supply device.

[0024] In combination with the third aspect, optionally, the power supply gun of the power supply device also includes a locking mechanism; the locking mechanism is configured to limit the retraction of the power cable when the power cable is electrically connected to the power receiving device; pausing the winding of the winding mechanism and controlling the power supply device body to start power supply, including: controlling the power supply device body to start power supply when no locking abnormality of the locking mechanism is detected.

[0025] The above-mentioned power supply method controls the power supply device body to start powering on only when no locking abnormality of the locking mechanism is detected, thereby almost avoiding the risk of power interruption caused by power cable retreat during the power supply process, thereby improving the safety and stability of power supply.

[0026] In summary, the power supply gun, power supply equipment and power supply method provided by the present application improve the practical convenience of the power supply gun by movably arranging the power cable in the wire tube, and retracting the gun wire to reduce the weight of the entire power supply gun during the process of the user plugging and unplugging the power supply gun. Furthermore, by arranging a locking mechanism in the internal space of the gun head to prevent the power cable from retreating, the convenience of using the power supply gun is further improved. The locking part is locked by a combination of an electrically controlled retractor and a rotating member, so that the automatic locking of the cable is realized, thereby further improving the convenience of using the power supply gun. When the winding mechanism is detected to be obstructed by the winding mechanism, the winding of the winding mechanism is suspended, and when the locking abnormality of the locking mechanism is not detected, the power supply device body is controlled to start power supply, which almost avoids the risk of power interruption caused by retreat of the power cable during the power supply process, thereby improving the safety and stability of the power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A cross-sectional view of a power supply gun provided in an embodiment of the present application; Figure 2 Schematic diagram of the relevant structure of the locking mechanism in the power supply gun provided by the embodiment of the present application; Figure 3 Schematic diagram of the power supply device provided by the embodiment of the present application; Figure 4 Flowchart of the power supply method provided by the embodiment of the present application.

[0029] Icons: 100, power supply gun; 110, gun head; 111, housing; 112, power supply terminal; 120, wire tube; 130, power cable; 131, locking part; 140, locking mechanism; 141, rotating part; 142, telescopic part; 150, support sleeve; 10, power supply device; 200, power supply device body; 210, winding mechanism. Detailed implementation manners

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application claimed, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0032] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0033] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the inventive product is habitually placed during use. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present application. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance.

[0034] In addition, terms such as "horizontal" and "vertical" do not require the components to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0035] In the description of the present application, it should also be noted that, unless otherwise clearly specified and limited, the terms "arranged", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0036] Taking the charging gun used to charge new energy vehicles as an example, since the gun line of the public DC charging pile is too thick and heavy, it is rather laborious to insert and remove the gun. Especially for those with relatively little strength, it is particularly inconvenient to use. To solve this technical problem, if a liquid-cooled gun line is used, although the weight of the gun line can be reduced, the cost and the later maintenance requirements are relatively high, and there is additional energy loss. If a boosting device or other means is used, it is also restricted by the terrain and space, so it is not very convenient either.

[0037] In view of this, the present application provides a power supply gun 100, a power supply device 10, and a power supply method to solve the above technical problems. Specifically, please refer to the embodiments and the accompanying drawings provided in the present application.

[0038] Please refer to Figure 1 , Figure 1 is a cross-sectional view of the power supply gun 100 provided by the embodiment of the present application. The power supply gun 100 provided by the embodiment of the present application may include a gun head 110, a wire tube 120, and a power cable 130. The gun head 110 may include a housing 111, and may have an internal space formed by the housing 111 and a first opening and a second opening located at both ends of the housing 111. The edge of the first opening on the housing 111 may be used to connect with the power receiving device. The inside of the wire tube 120 may have a channel. One end of the wire tube 120 is connected to one end of the housing 111, and the channel of the wire tube 120 is communicated with the internal space of the gun head 110 through the second opening. The other end of the wire tube 120 may be used to connect with the main body of the power supply device 10. One end of the power cable 130 may be movably arranged inside the wire tube 120. The other end of the power cable 130 may be used to conductively connect with the main body of the power supply device 10. The power cable 130 may be configured to: expand and contract between both ends in the channel of the wire tube 120 under the drive of the main body of the power supply device 10, and conductively connect with the power receiving device when moving to one end of the channel facing the first opening.

[0039] A handle may be provided outside the housing 111 for the user to hold during use. A clamping member or clamping portion may also be provided at the edge of the first opening on the housing 111 and adapted to the power receiving device to play a fixing role when the power supply gun 100 is plugged into the power receiving device, so as to prevent the power supply gun 100 from falling off the power receiving device during power supply.

[0040] The first opening and the second opening are respectively used to provide space for the power supply circuit. Specifically, the first opening is used to provide space for the circuit between the power supply gun 100 and the power receiving device, and the second opening is used to provide space for the circuit between the power supply gun 100 and the power receiving device body.

[0041] The connection between the cable conduit 120 and the gun head 110 may be a fixed connection or a detachable connection, such as: screwed connection, clamped connection, etc. The cable conduit 120 and the power receiving device body may also be a detachable connection such as screwed connection, clamped connection, etc.

[0042] Taking a charging pile as an example, the power supply device 10 body may be a charging pile body, which may internally have a voltage stabilizing element, a voltage transforming element, an AC-DC conversion element, etc. The power cable 130 may include a positive line, a negative line (or a live wire, a neutral wire), a ground wire, and a signal line. The positive line and the negative line (or the live wire, the neutral wire) are used to transmit power, the ground wire is used to ground to improve the use safety of the power supply gun 100, and the signal line is used to transmit electrical signals and control signals representing the power supply state of the power supply gun 100, etc.

[0043] One end of the power cable 130 may be movably arranged in the cable conduit 120, and the other end may be used for electrically connecting to the power supply device 10 body. A driving assembly may also be provided in the power supply device 10 body, such as: a winding mechanism 210 driven by a motor, which winds and unwinds the power cable 130 to control the telescopic movement of the power cable 130 in the cable conduit 120. Thus, one end of the power cable 130 located in the cable conduit 120 can be close to or far from the first opening.

[0044] In the above implementation process, when the power supply gun 100 is idle, the power supply device 10 body can drive the power cable 130 to contract, so that the end of the power cable 130 located inside the cable duct 120 retreats to the end where the cable duct 120 is connected to the power receiving device body. In this way, when the user holds the power supply gun 100 and plugs it into the power receiving device, there is no need to overcome the gravity of the cable, thereby reducing the weight of the power supply gun 100 during the gun plugging process. When the user has finished plugging the gun and needs to start power supply, the winding mechanism 210 of the power supply device 10 body can be controlled to unwind, so that the end of the power cable 130 located inside the cable duct 120 moves towards the first opening, and through the space provided by the first opening, it is electrically connected to the power receiving device, thereby supplying power to the power receiving device. After the power supply is completed, the power supply device 10 body can also drive the power cable 130 to contract, so that the end of the power cable 130 located inside the cable duct 120 retreats to the end where the cable duct 120 is connected to the power receiving device body. In this way, when the user pulls out the gun and holds the power supply to return to its position, there is also no need to overcome the gravity of the cable, thereby reducing the weight of the power supply gun 100 during the gun pulling process. That is to say, by movably arranging the power cable 130 inside the cable duct 120, the gun cable is retracted during the process of the user inserting and pulling out the power supply gun 100 to reduce the overall weight of the power supply gun 100, thereby improving the practical convenience of the power supply gun 100.

[0045] Please continue to refer to Figure 1 , in some alternative embodiments, the gun head 110 may further include a power supply terminal 112. The power supply terminal 112 may be disposed at the first opening on the housing 111. One electrical connection end of the power supply terminal 112 may face the internal space. The other electrical connection end of the power supply terminal 112 may face the external space and may be used to connect to the power receiving terminal of the power receiving device to supply power to the power receiving device. One end of the power cable 130 located inside the channel may be provided with an electrical connector. When the end of the power cable 130 located inside the channel moves to the first opening, the electrical connector is electrically connected to the end of the power supply terminal 112 facing the internal space.

[0046] The power supply terminal 112 may specifically be a pin to be adapted to the power receiving jack provided on the power receiving device. One end of the pin may be electrically connected to the power cable 130, and the other end may be used to be electrically connected to the power receiving device by inserting into the power supply jack.

[0047] In the above implementation process, a power supply terminal 112 is provided at the first opening and is used to connect the power cable 130 and the power receiving device, so as to achieve the conductive connection between the power cable 130 and the power receiving device. During the process of driving the power cable 130 to make the end located in the channel close to the first opening, there is no need to directly conductively connect the power cable 130 to the power receiving device by driving the power cable 130. Instead, when the power supply gun 100 is plugged into the power receiving device, one end of the power supply terminal 112 has completed the conductive connection with the power receiving device. In this case, only by driving the power cable 130 to contact the other end of the power supply terminal 112 can the conductive connection between the power cable 130 and the power receiving device be achieved. Thereby reducing the probability of the power supply gun 100 failing to conductively connect to the power receiving device caused by the method of directly contacting the power cable 130 with the conductive device to achieve conductive connection. Correspondingly, that is, improving the stability of the conductive connection between the power supply gun 100 and the power receiving device, and further improving the convenience of use of the power supply gun 100.

[0048] Please refer to Figure 2 , Figure 2 which is a schematic structural diagram of the locking mechanism 140 in the power supply gun 100 provided by an embodiment of the present application. In some alternative embodiments, a locking mechanism 140 may also be provided in the internal space of the gun head 110. One end of the power cable 130 located in the channel may have a locking portion 131 adapted to the locking mechanism 140. The locking mechanism 140 may be configured to limit the locking portion 131 from moving away from the first opening when the power cable 130 is conductively connected to the power receiving device.

[0049] That is to say, the locking mechanism 140 can be used to prevent the power cable 130 inside the wire tube 120 from retracting by locking the locking portion 131 when the power supply gun 100 supplies power to the power receiving device, or when the power supply gun 100 is plugged into the power receiving device, etc.

[0050] The locking mechanism 140 may specifically be a locking bayonet as Figure 2 shown. The locking portion 131 may specifically be a component provided on one end of the power cable 130 located in the channel and having a pin hole. When the power cable 130 moves to conductively contact the power supply terminal 112, the locking bayonet is inserted into the pin hole of the locking portion 131 to prevent the cable from retracting.

[0051] In the above implementation process, by providing a locking mechanism 140 in the internal space of the gun head 110 to lock the power cable 130 when the power cable 130 is conductively connected to the power receiving device to prevent the power cable 130 from retracting, the stability of the power supply gun 100 during the power supply process is further improved, and correspondingly, the convenience of use of the power supply gun 100 is further improved.

[0052] Please continue to refer to Figure 1 In some alternative embodiments, the locking mechanism 140 may include a rotating member 141 and an electrically controlled linear expander. The rotating member 141 may have a connecting portion which may be rotatably connected to the inside of the housing 111. The connecting portion may be located between the two ends of the rotating member 141 and may not coincide with the center of gravity of the rotating member 141. Wherein, the rotation axis of the rotating member 141 may be separated from the locking portion 131, and the rotation axis is not parallel to the arrangement direction of the first opening and the second opening. The electrically controlled linear expander may be disposed on the inner wall of the housing 111. The minimum distance between the electrically controlled linear expander and the inner wall of the housing 111 may be less than the minimum distance between the rotating member 141 and the inner wall of the housing 111. The electrically controlled linear expander may have a telescopic member 142, and the telescopic trajectory of the telescopic member 142 intersects with the rotatable trajectory of the first end of the rotating member 141. The rotatable trajectory of the second end of the rotating member 141 intersects with the movable trajectory of the locking portion 131. The rotating member 141 may be configured such that during the process of the locking portion 131 moving in the direction close to the first opening, the locking portion 131 pushes the second end of the rotating member 141 on the side of the second end of the rotating member 141 facing away from the first opening, and is abutted by the rotating member 141 on the side of the second end of the rotating member 141 facing the first opening. The electrically controlled linear expander may be configured to control the telescopic member 142 to move to a position intersecting with the rotatable trajectory of the first end of the rotating member 141 to limit the rotation of the rotating member 141 when the power cable 130 is electrically connected to the power receiving device.

[0053] In a preferred embodiment, the rotation axis of the rotating member 141 may be perpendicular to the movement direction of the locking portion 131 when it is located at the first opening.

[0054] The electrically controlled linear expander may be a two-way electromagnetic lock. The two-way electromagnetic lock mainly includes a bar-shaped magnetic member and an electromagnetic coil sleeved on the magnetic member. By passing currents in different directions through the electromagnetic coil, magnetic fields in different directions are generated to control the expansion and contraction of the magnetic member.

[0055] The specific working process of the locking mechanism 140 may be Figure 1For example, first, during the movement of the locking portion 131 from the right side to the left side of the rotating member 141, the rotating member 141 is pushed to rotate clockwise and finally moves to the left side of the rotating member 141. Since the connecting portion of the rotating member 141 does not coincide with its center, the rotating member 141 will return to the state of natural drooping by rotating counterclockwise under the action of its own gravity (that is, the state before the locking portion 131 moves from the right side to the left side of the rotating member 141). In this state, since the rotatable trajectory of the second end of the rotating member 141 intersects with the movable trajectory of the locking portion 131, when the rotating member 141 is in the state of natural drooping, the second end of the rotating member 141 is located within the movement trajectory of the locking portion 131. Thus, during the retraction process, the locking portion 131 will come into contact with and rotate the rotating member 141 counterclockwise. Then, continue to control the telescopic member 142 of the electro-controlled telescopic device to move to a position intersecting with the rotation trajectory of the first end of the rotating member 141. By the same token, if the rotating member 141 rotates counterclockwise, it will come into contact with the telescopic member 142, thereby restricting the counterclockwise rotation of the rotating member 141. Correspondingly, the retraction of the locking portion 131 is also restricted. Finally, by controlling the telescopic member 142 of the electro-controlled telescopic device to contract, the restriction on the rotating member 141 is released, and thus the restriction on the retraction of the locking portion 131 is also released.

[0056] In the above implementation process, the combination of the electro-controlled telescopic device and the rotating member 141 is used to lock the locking portion 131, realizing the automatic locking of the cable, thereby further improving the convenience of use of the power supply gun 100.

[0057] Please continue to refer to Figure 1 In some alternative embodiments, a support sleeve 150 may be provided on the inner wall and / or the outer wall of the wire tube 120. The support sleeve 150 is attached to the inner wall and / or the outer wall of the wire tube 120. Among them, the elastic coefficient of the support sleeve 150 may be greater than that of the wire tube 120.

[0058] The support sleeve 150 may be a spring pile metal ring, a nylon sleeve, or a corrugated pipe, etc. By providing the support sleeve 150 on the outer wall or the inner wall of the wire tube 120, or both on the inner wall and the outside, the wire tube 120 is supported, so that the wire tube 120 is bent in an arc and is difficult to be bent.

[0059] In the above implementation process, by providing the support sleeve 150 on the inner wall and / or the outer wall, the wire tube 120 is prevented from bending, thereby almost avoiding the blockage of the power cable 130 when expanding in the wire tube 120. Finally, the failure rate of the power supply gun 100 is reduced.

[0060] Please refer to Figure 3 , Figure 3It is a schematic diagram of the power supply device 10 provided by an embodiment of the present application. Based on the same concept, an embodiment of the present application provides a power supply device 10, which may include the power supply device 10 body and the power supply gun 100 described above. One end of the wire tube 120 of the power supply gun 100 that is not connected to the gun head 110 of the power supply gun 100 is connected to the power supply device 10 body. One end of the power cable 130 of the power supply gun 100 that is not located inside the wire tube 120 of the power supply gun 100 can be conductively connected to the power supply device 10 body.

[0061] The above implementation process can be the same as that of the power supply gun 100 described above, and will not be elaborated here.

[0062] A winding mechanism 210 is provided inside the power supply device 10 body. The power cable 130 of the power supply gun 100 can be wound on the winding mechanism 210. The winding mechanism 210 can be configured to drive the power cable 130 to stretch and retract inside the wire tube 120 of the power supply gun 100 by winding and unwinding the power cable 130.

[0063] The power supply device 10 body can also be equipped with a motor for driving the rotation of the winding mechanism 210.

[0064] In the above implementation process, the winding mechanism 210 winds and unwinds the power cable 130 to realize the stretching and retracting of the power cable 130 inside the wire tube 120, eliminating the need to provide a related mechanism for controlling the stretching and retracting of the power cable 130 on the power supply gun 100, which simplifies both the structure of the power supply gun 100 and the structure of the power supply device 10 body.

[0065] Please refer to Figure 4 , Figure 4 It is a flowchart of the power supply method provided by an embodiment of the present application. Based on the same concept, an embodiment of the present application provides a power supply method, which should be applicable to the power supply device 10 described above. The method may include: Step S120: Control the winding mechanism to unwind the power cable.

[0066] In the above step S120, during the process of the winding mechanism unwinding the power cable, one end of the power cable located inside the wire tube will move towards the gun head and finally make the power cable conductively connected to the power supply terminal.

[0067] Step S140: After detecting that the power cable is conductively connected to the power receiving device, pause the winding of the winding mechanism and control the power supply device body to start power supply.

[0068] In the above step S140, to detect whether the conductive connection between the power cable and the power receiving device is successful, it can be determined based on the detection signal fed back by the signal cable inside the wire tube.

[0069] Step S160: After detecting that the power receiving device does not need power, control the winding mechanism to wind the power cable.

[0070] In the above step S160, similarly, detect whether the power receiving device does not need power. For example, whether the new energy vehicle has completed charging can also be judged through the detection signal fed back by the signal cable.

[0071] The above implementation process can be the same as the power supply device described above and will not be elaborated here.

[0072] In some alternative embodiments, step S120 may include: Step S121: When it is detected that the winding of the winding mechanism is blocked, suspend the winding of the winding mechanism.

[0073] In the above step S121, to detect whether the winding of the winding mechanism is blocked, it can be determined that the winding of the winding mechanism is blocked when neither the electrical signal indicating that the power cable extends to be electrically connected to the power supply terminal nor the electrical signal indicating that the power cable retracts to the end of the cable duct connected to the power supply device body is received, and when it is detected that the current flowing through the motor for driving the winding mechanism is too large.

[0074] Step S122: When it is not detected that the winding of the winding mechanism is blocked, suspend the winding of the winding mechanism until it is detected that the power cable is electrically connected to the power receiving device.

[0075] In the above step S122, that is to say, during the normal process of winding the power cable to make the power cable electrically connected to the power supply terminal, it is also possible to control the winding mechanism to suspend winding when receiving the electrical signal fed back by the signal cable indicating that the power cable is successfully electrically connected to the power supply terminal.

[0076] In the above implementation process, by detecting that the winding of the winding mechanism is blocked, suspending the winding of the winding mechanism, and when it is not detected that the winding of the winding mechanism is blocked, controlling the winding mechanism to wind until the power cable is successfully electrically connected to the power receiving device, it almost avoids the occurrence of secondary faults caused by continuing to control the winding mechanism to wind when the winding of the winding mechanism is blocked. Thus, it plays a role in protecting the power supply device and also improves the operating stability of the power supply device.

[0077] In some alternative embodiments, step S140 may include: Step S141: When it is not detected that the locking mechanism has abnormal locking, control the power supply device body to start power supply.

[0078] In the above step S141, the signal feedback by a contact sensor or the like configured for the locking mechanism can be used to confirm whether the locking mechanism has successfully locked the power cable, and power supply can be started only when the locking is successful.

[0079] In the above implementation process, by controlling the power supply device body to start power supply only when no abnormal locking of the locking mechanism is detected, the risk of power supply interruption caused by the retraction of the power cable during the power supply process is almost avoided, thereby improving the safety and stability of the power supply.

[0080] In summary, for the power supply gun 100, the power supply device 10 and the power supply method provided in the embodiments of the present application, by movably arranging the power cable 130 in the wire tube 120, the gun wire is retracted during the process of the user inserting and removing the power supply gun 100 to reduce the overall weight of the power supply gun 100, thereby improving the practical convenience of the power supply gun 100. Further, by arranging a locking locking mechanism 140 in the internal space of the gun head 110 to prevent the retraction of the power cable 130, the use convenience of the power supply gun 100 is further improved. The combination of the electric telescopic device and the rotating member 141 is used to lock the locking portion 131, realizing the automatic locking of the cable, thereby further improving the use convenience of the power supply gun 100. By detecting that the winding mechanism 210 is blocked during the winding of the winding mechanism 210 and pausing the winding of the winding mechanism 210, and controlling the power supply device 10 body to start power supply only when no abnormal locking of the locking mechanism 140 is detected, the risk of power supply interruption caused by the retraction of the power cable 130 during the power supply process is almost avoided, thereby improving the safety and stability of the power supply.

[0081] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A power supply gun, characterized in that, It includes a gun head, a wire tube, and a power cable. The gun head includes a housing, and has an internal space formed by the housing, and a first opening and a second opening located at both ends of the housing; the edge of the first opening on the housing is used to connect with the power receiving device. The wire tube has a channel inside; one end of the wire tube is connected to one end of the housing, and the channel of the wire tube is communicated with the internal space of the gun head through the second opening; the other end of the wire tube is used to connect with the main body of the power supply device. One end of the power cable is movably arranged inside the wire tube; the other end of the power cable is used to conductively connect with the main body of the power supply device. The power cable is configured to: under the drive of the main body of the power supply device, stretch between both ends in the channel of the wire tube, and when moving to one end of the channel facing the first opening, conductively connect with the power receiving device.

2. The power supply gun according to claim 1, wherein The gun head further includes a power supply terminal. The power supply terminal is arranged at the first opening on the housing; one electrical connection end of the power supply terminal faces the internal space; the other electrical connection end of the power supply terminal faces the external space and is used to connect with the power receiving terminal of the power receiving device to supply power to the power receiving device. One end of the power cable located in the channel is provided with an electrical connection member. When one end of the power cable located in the channel moves to the first opening, the electrical connection member is electrically connected to one end of the power supply terminal facing the internal space.

3. The power supply gun according to claim 1, wherein A locking mechanism is further arranged in the internal space of the gun head. One end of the power cable located in the channel has a locking portion adapted to the locking mechanism. The locking mechanism is configured to limit the locking portion from moving in a direction away from the first opening when the power cable is electrically connected to the power receiving device.

4. The power supply gun according to claim 3, characterized in that, The locking mechanism includes a rotating member and an electric control linear expander. The rotating member has a connecting portion, and the connecting portion is rotatably connected to the inside of the housing; the connecting portion is located between both ends of the rotating member and does not coincide with the center of gravity of the rotating member; wherein, the rotation axis of the rotating member is separated from the locking portion, and the rotation axis is not parallel to the arrangement direction of the first opening and the second opening. The electric control linear expander is arranged on the inner wall of the housing; the minimum distance between the electric control linear expander and the inner wall of the housing is less than the minimum distance between the rotating member and the inner wall of the housing. The electric control linear expander has a telescopic member, and the telescopic trajectory of the telescopic member intersects with the rotatable trajectory of the first end of the rotating member. The rotatable trajectory of the second end of the rotating member intersects with the movable trajectory of the locking portion. The rotating member is configured to, during the process of the locking portion moving in a direction close to the first opening, the locking portion pushes the second end of the rotating member on the side of the second end of the rotating member facing away from the first opening, and is abutted by the rotating member on the side of the second end of the rotating member facing the first opening. The electric control linear expander is configured to control the expander to move to a position intersecting the rotatable trajectory of the first end of the rotator when the power cable is electrically connected to the power receiving device, so as to limit the rotation of the rotator.

5. The power supply gun according to any one of claims 1 to 4, characterized in that, A support sleeve is further provided on the inner wall and / or the outer wall of the wire tube; The support sleeve is attached to the inner wall and / or the outer wall of the wire tube; Wherein, the elastic coefficient of the support sleeve is greater than that of the wire tube.

6. A power supply device, characterized in that, It includes a power supply device body and a power supply gun according to any one of claims 1 to 5; One end of the wire tube of the power supply gun that is not connected to the gun head of the power supply gun is connected to the power supply device body; One end of the power cable of the power supply gun that is not located inside the wire tube of the power supply gun is electrically connected to the power supply device body.

7. The power supply device according to claim 6, characterized in that A winding mechanism is provided inside the power supply device body; The power cable of the power supply gun is wound on the winding mechanism; The winding mechanism is configured to drive the power cable to expand and contract inside the wire tube of the power supply gun by winding and unwinding the power cable.

8. A power supply method, characterized in that, Applied to the power supply device according to claim 7; The method includes: Controlling the winding mechanism to unwind the power cable; After detecting that the power cable is electrically connected to the power receiving device, pausing the winding of the winding mechanism and controlling the power supply device body to start power supply; and After detecting that the power receiving device does not need power supply, controlling the winding mechanism to wind the power cable.

9. The method according to claim 8, wherein The controlling the winding mechanism to unwind the power cable includes: When detecting that the winding of the winding mechanism is blocked, pausing the winding of the winding mechanism; and When not detecting that the winding of the winding mechanism is blocked, pausing the winding of the winding mechanism until detecting that the power cable is electrically connected to the power receiving device.

10. The method according to claim 8, wherein The power supply gun of the power supply device further includes a locking mechanism; the locking mechanism is configured to limit the backward retraction of the power cable when the power cable is electrically connected to the power receiving device; The pausing the winding of the winding mechanism and controlling the power supply device body to start power supply includes: When not detecting the abnormal locking of the locking mechanism, controlling the power supply device body to start power supply.

Images