A charging bag track-changing mechanism and a charging device

Abstract

The application discloses a charging package track changing mechanism and a charging device, and relates to the charging technology of new energy vehicles. The application aims to provide a new specific structure of a track changing device. The charging package track changing mechanism is arranged at the gap of the charging rail, the transverse guide rail of the charging package track changing mechanism is provided with a moving guide rail, the moving guide rail is movably connected with a package shell, the transverse guide rail is fixedly connected with a track changing mechanism, the track changing mechanism comprises a screw rod base, the screw rod base is fixedly connected with a screw rod, the screw rod is provided with a connecting plate and a first bevel gear, the connecting plate is connected with the first bevel gear through a bearing, and the first bevel gear is threadedly connected with the screw rod. Through the screw rod and the first bevel gear matched with the screw rod, the first bevel gear, the moving guide rail and the charging package can be moved together through the thread connection between the first bevel gear and the screw rod. Therefore, the charging package which needs to be repaired or charged can be removed from the charging rail by moving the moving guide rail, so that the normal use of the charging device is not affected.

Description

Technical Field

[0001] This invention belongs to the field of new energy vehicle technology, and relates to charging technology for new energy vehicles, and particularly to a charging pack switching mechanism and charging device for new energy vehicles. Background Technology

[0002] With the development of new energy vehicles, the proportion of new energy vehicles is increasing, and the demand for charging piles is becoming increasingly strong. Currently, charging piles are basically provided for one parking space with one charging pile and one charging gun. However, it is common for new energy vehicle parking spaces to be occupied by gasoline vehicles, causing the charging piles to become mere decorations or have low utilization rates.

[0003] In response to this phenomenon, shared charging stations have emerged in the existing technology. For example, invention patent application number 202110588619.9 discloses a mobile charging station, which consists of a guide rail arranged above a parking space, on which a charging pack can move. Specifically, it includes a mounting carrier and a charging pack. The mounting carrier is mainly used to install the charging pack, serving as a carrier for its installation. This mounting carrier can be a power-collecting guide rail, with one end / side fixedly installed on the ground, wall, column, or ceiling of the parking lot, and the charging pack installed on the other end / side. The charging pack can move along the length of the power-collecting guide rail and stop at the corresponding parking space according to charging needs. After parking, the user simply scans the QR code corresponding to the parking space, and the charging pack will automatically move to the corresponding parking space for charging.

[0004] However, like other existing technologies, this invention patent has a common drawback: it only has one rail and can only hold one charging pack. To address this, patent application number 202210834481.0 discloses a screw-guided closed-loop mobile charging pile. Multiple arc-shaped and straight sections of the guide rail, located at various corners, are suspended from the top of the garage wall, with multiple track-changing gaps between them. The track-changing device's track-changing assembly has guide posts with sliders supported at both ends on the short frame of the track-changing frame. Track-changing guide rails with connecting frames are mounted on the sliders. Electric push rods are hinged at both ends to push rod lugs and connecting frames, respectively. The track-changing device is installed within the track-changing gaps. The take-up and release rollers of the mobile device's take-up and release device, with cables wound around them, are supported at both ends on the mobile frame. The take-up and release drive on the mobile frame is connected to the take-up and release rollers. Guide rods and guide screws with guide components are supported at both ends on the mobile frame of the mobile device. The guide gear on the guide screw meshes with the take-up and release gear of the take-up and release device. Multiple mobile devices are suspended on the guide rails via mobile components mounted on the mobile frame.

[0005] This invention patent uses the electric push rod of the track changing component of the track changing device to start, the telescopic rod to extend or retract, and the connecting frame of the track changing component to drive two track changing guides to move towards the inside (or outside) of the guide rail. The track changing guide located on the outside of the guide rail near the push rod lug moves again to align with the connecting guide rail of the track changing frame.

[0006] This invention patent provides a specific structure for a track-changing device. This application aims to provide a new specific structure for a track-changing device to improve the efficiency of track changing. Summary of the Invention

[0007] The purpose of this invention is to provide a new specific structure for a track-changing device. This invention provides a charging pack track-changing mechanism and a charging device.

[0008] To achieve the above objectives, the present invention specifically adopts the following technical solution:

[0009] A charging pack track-changing mechanism includes a track-changing frame; the track-changing frame includes a transverse guide rail, a movable guide rail is disposed on the transverse guide rail, a pack shell is movably connected to the movable guide rail, and a track-changing mechanism for pushing the movable guide rail to move along the transverse guide rail is fixedly connected to the transverse guide rail; the track-changing mechanism includes a lead screw seat fixedly connected to the transverse guide rail, a lead screw fixedly connected to the lead screw seat, a connecting plate and a first bevel gear sleeved on the lead screw, the connecting plate and the first bevel gear are connected by a bearing, and the first bevel gear is threadedly connected to the lead screw.

[0010] Furthermore, a groove is provided on the inner side of the transverse guide rail; sliding wheels are provided on both sides of the movable guide rail, and the sliding wheels are engaged in the groove and can move along the length of the groove.

[0011] A charging device includes a charging rail, a charging pack, and a mounting bracket. The charging pack is connected to the charging rail and can move along the direction of the charging rail. The charging rail has notches corresponding to the positions of each mounting bracket. The bottom of the mounting bracket is provided with a charging pack rail changing mechanism. The charging pack rail changing mechanism adopts the above-mentioned charging pack rail changing mechanism. When the moving rail on the charging pack rail changing mechanism moves to the designated notch of the charging rail, the moving rail connects with the charging rail.

[0012] The charging pack is movably connected to the movable guide rail, and the charging pack is equipped with a drive mechanism for driving the first bevel gear to rotate.

[0013] Furthermore, the charging pack includes a housing, which is suspended on a moving guide rail by rollers on the housing; the driving mechanism includes a transverse drive motor mounted on the housing and a second bevel gear driven by the transverse drive motor and freely rotatable on the housing, the second bevel gear meshing perpendicularly with the first bevel gear.

[0014] Furthermore, a first gear and a second gear are coaxially connected on the outer shell of the package. A worm is provided at the end of the output shaft of the transverse drive motor. The worm is connected to the first gear through a first transmission mechanism, and the second gear is connected to the second bevel gear through a second transmission mechanism, thereby driving the second bevel gear to rotate.

[0015] Furthermore, a notch is provided on the second gear, and the notch is arranged along the axial direction of the second gear.

[0016] Furthermore, the moving guide rail is an I-shaped guide rail; a U-shaped connecting frame is provided on the top of the outer shell of the package, and rollers are installed inside the U-shaped connecting frame. The bottom of the rollers on both sides are in contact with the rails on both sides of the moving guide rail, and the outer shell of the package is suspended on the moving guide rail by the rollers.

[0017] Furthermore, at least two sets of movable guide rails are provided on the transverse guide rail along its length direction. The two sets of movable guide rails are linked together and move together along the length direction of the transverse guide rail.

[0018] The beneficial effects of this invention are as follows:

[0019] 1. This invention provides a novel charging pack track-changing mechanism, which consists of a transverse guide rail, a movable guide rail, a track-changing mechanism, and sliding wheels. Its structure is simple, easy to manufacture, and has low production costs. The track-changing frame is equipped with a lead screw and a first bevel gear that meshes with the lead screw. The driving device on the charging pack can drive the first bevel gear to rotate through a transmission mechanism. Through the threaded connection between the first bevel gear and the lead screw, the first bevel gear, the movable guide rail, and the charging pack can move together. This allows the charging pack requiring maintenance or charging to be removed from the charging guide rail by moving the movable guide rail, preventing it from affecting the normal operation of the charging device. Furthermore, in this structure, moving the movable guide rail is very convenient and quick, with an extremely low failure rate.

[0020] 2. In this invention, the charging pack and the track-changing mechanism are driven by gear meshing. During normal charging, the charging pack needs to travel between the charging guide rail and the track-changing mechanism. When track changing is required, the track-changing mechanism is driven by gear transmission to achieve track changing. This requires that the gear transmission mechanism is not prone to collision and that the gears do not collide when the charging pack travels between the charging guide rail and the track-changing mechanism. Therefore, a notch is provided on the second gear. When the charging pack travels between the charging guide rail and the track-changing mechanism, the notch on the second gear is opposite to the gear on the track-changing mechanism. The notch on the second gear can effectively prevent collision with the gear on the track-changing mechanism. When track changing is required, the second gear is rotated to achieve meshing between the second gear and the gear on the track-changing mechanism. That is, the second gear and the gear on the track-changing mechanism switch between "meshing-non-meshing-meshing-non-meshing-…-meshing-non-meshing-meshing-non-meshing". Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the charging device;

[0022] Figure 2 This is a schematic diagram of the connection between the rail changing frame and the charging pack in this invention;

[0023] Figure 3 This is a schematic diagram of the connection between the rail changing frame and the charging pack in this invention;

[0024] Figure 4 This is a schematic diagram showing the connection between the charging pack track-changing mechanism and the charging pack;

[0025] Figure 5 This is a schematic diagram of the internal structure of the charging pack in this invention;

[0026] Figure 6 This is a schematic diagram showing the interior of the charging pack from the rear view in this invention;

[0027] The attached figures are labeled as follows: 1-charging guide rail, 2-charging pack, 3-rail changing frame, 4-mounting frame, 21-packet shell, 22-U-shaped connecting frame, 23-roller, 31-transverse guide rail, 32-moving guide rail, 33-rail changing mechanism, 34-sliding wheel, 211-second bevel gear, 212-fourth gear, 213-third gear, 214-second gear, 215-worm gear, 216-transverse drive motor, 217-first gear, 311-groove, 331-lead screw seat, 332-lead screw, 333-connecting plate, 334-first bevel gear, 2141-notch;

[0028] 201-Drive mechanism, 202-First transmission mechanism, 203-Third transmission mechanism, 204-Third transmission mechanism, 205-Charging cable, 206-Fourth transmission mechanism, 207-Fifth transmission mechanism, 208-Sixth transmission mechanism, 209-Connecting rod, 2010-Spring, 2011-Drive motor, 2012-Worm gear, 2021-First driving gear, 2022-First driven gear, 2031-Second driven gear, 2032-Second driving gear, 2041-Driving rubber wheel, 2042-Fourth driving gear, 2081-Sixth driving gear, 2082-Driven rubber wheel. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0031] This embodiment provides a charging device, mainly used for charging new energy vehicles. Its purpose is to replace faulty charging packs and charging packs without power by switching rails, without affecting the normal use of other charging packs.

[0032] The charging device includes a charging rail 1, a charging pack 2, a mounting frame 4, and a charging pack track-changing mechanism. The charging pack 2 is mounted on the charging rail 1 and can move along the track direction of the charging rail 1 to charge different new energy vehicles that need charging. Since this charging device is a shared charging device, it may charge multiple new energy vehicles simultaneously. Therefore, multiple charging packs 2 can be set on one charging rail 1, and each charging pack 2 can slide freely on the charging rail 1. Multiple mounting frames 4 are set on the charging rail 1 along the direction of the charging rail 1. The charging rail 1 is broken at the position of each mounting frame 4 to form a gap, and a charging pack track-changing mechanism is set at each gap. The charging pack track-changing mechanism is connected to the mounting frame 4. When an unusable charging pack 2 (a faulty charging pack, a charging pack without power, etc.) is moved to the charging pack track-changing mechanism, the charging pack track-changing mechanism starts working, moves the charging pack 2 and its track off the charging rail 1, connects the other tracks of the charging pack track-changing mechanism to the charging rail 1, and allows the remaining charging packs 2 to pass normally.

[0033] The charging pack rail-switching mechanism includes a rail-switching frame 3 fixedly connected to the bottom of the mounting frame 4. The rail-switching frame 3 includes two sets of transverse guide rails 31 arranged horizontally, one in front of the other, along the direction of the charging guide rail 1. The direction of the transverse guide rails 31 is perpendicular to the direction of the charging guide rail 1. Two sets of movable guide rails 32 are also arranged horizontally, one in front of the other, along the direction of the transverse guide rails 31. Each set of transverse guide rails 31 has a groove 311 on its inner side. Each set of movable guide rails 32 has two sliding wheels 34 at its two ends. The sliding wheels 34 are engaged in the grooves 311 and can move along the length of the grooves 311. After the two sets of movable guide rails 32 are installed on the transverse guide rails 31, the two sets of movable guide rails 32 can move synchronously on the transverse guide rails 31. A rail-switching mechanism 33 is fixedly connected to the transverse guide rails 31 or the mounting frame 4. The rail-switching mechanism 33 can push the movable guide rails 32 to move along the direction of the transverse guide rails 31, thereby switching between different movable guide rails 32 connected to the charging guide rail 1.

[0034] The track-changing mechanism 33 includes two lead screw seats 331, which are arranged one in front of the other along the length of the transverse guide rail 31, and both lead screw seats 331 are fixedly connected to the transverse guide rail 31 or the mounting bracket 4. A lead screw 332 is fixedly connected between the two lead screw seats 331, and the lead screw 332 cannot rotate on the lead screw seat 331. A connecting plate 333 and a second bevel gear 334 are sleeved on the lead screw 332. The connecting plate 333 and the lead screw 332 are in clearance fit with a shaft hole. The connecting plate 333 is connected to the moving guide rail 32. The connecting plate 333 and the second bevel gear 334 are connected by bearings. The connecting plate 333 is fixed (cannot rotate), while the second bevel gear 334 can rotate. The second bevel gear 334 is threadedly connected to the lead screw 332. When an external force drives the second bevel gear 334 to rotate on the lead screw 332, the second bevel gear 334 rotates while moving axially along the lead screw 332.

[0035] When an external power drives the second bevel gear 334 to rotate, because the second bevel gear 334 is threadedly connected to the lead screw 332, and under the action of the connecting plate 333 and the movable guide rail 32 (which can only move along the axial direction of the lead screw 332 and cannot rotate), the second bevel gear 334 can only move along the axial direction of the lead screw 332, and drives the movable guide rail 32 to move synchronously. During the movement of the movable guide rail 32, when the movable guide rail 32 moves to the designated position (the notch of the charging guide rail 1), the movable guide rail 32 can be connected to the charging guide rail 1. The charging pack 2 can move to the designated position through the charging guide rail 1 and the movable guide rail 32 to charge the vehicle.

[0036] The aforementioned external drive is the drive mechanism on the charging pack 2. The charging pack 2 is movably connected to the movable guide rail 32, and the charging pack 2 is also equipped with a drive mechanism for driving the first bevel gear 334 to rotate. Through the drive mechanism, the second bevel gear 334 is driven to rotate.

[0037] This embodiment also provides a specific structure of a charging pack 2. Specifically, the charging pack 2 includes a pack shell 21, which is suspended on a moving guide rail 32 via rollers 23. The charging pack 2 can move on the moving guide rail 32 and the charging guide rail 1 via the rollers 23. The driving mechanism includes a transverse drive motor 216 mounted on the pack shell 21. The transverse drive motor 216 can be a servo motor, capable of precisely controlling its rotation angle. It also includes a second bevel gear 211 mounted on the pack shell 21, which can rotate freely on the pack shell 21 under the drive of the transverse drive motor 216. The second bevel gear 211 meshes perpendicularly with a first bevel gear 334. This perpendicular meshing has two functions: firstly, it enables transmission, transferring power from the second bevel gear 211 to the first bevel gear 334; secondly, it enables the redirection of power, converting rotational motion around the y-axis into rotational motion around the x-axis.

[0038] To prevent gear collisions in the transmission structure during the movement of the charging pack 2, and to enable the transmission structure to drive the moving guide rail 3, a first gear 217 and a second gear 214 are installed on the outer shell 21 of the pack. The first gear 217 and the second gear 214 are coaxially connected and rotate synchronously. A worm gear 215 is provided at the end of the output shaft of the transverse drive motor 216, and the worm gear 215 rotates coaxially with the output shaft of the transverse drive motor 216. One side of the worm gear 215 is connected to the first gear 217 through a first transmission mechanism. More specifically, this first transmission mechanism is a gear set. The worm gear 215 meshes with the first gear of the first transmission mechanism, and the gears in the first transmission mechanism mesh sequentially. The last gear of the first transmission mechanism meshes with the first gear 217. In this way, the movement of the worm gear 215 can be transmitted to the first gear 217 through the first transmission mechanism, causing the first gear 217 to rotate. The second gear 214 can directly mesh with the second bevel gear 211, or it can mesh with the second bevel gear 211 through the second transmission mechanism. The second gear 214 meshes with the first gear of the second transmission mechanism, and the gears in the second transmission mechanism mesh sequentially. The last gear of the second transmission mechanism meshes with the second bevel gear 211. In this way, the movement of the second gear 214 can be transmitted to the second bevel gear 211 through the second transmission mechanism, causing the second bevel gear 211 to rotate. In addition, the second gear 214 has a notch 2141, which is arranged along the axial direction of the second gear 214. By providing a notch 2141 on the second gear 214, when the charging pack 2 travels between the charging guide rail 1 and the track-changing mechanism 3, the notch 2141 on the second gear 214 is aligned with the gear on the track-changing mechanism 3, allowing the charging pack 2 to smoothly transition from the charging guide rail 1 to the moving guide rail 32 of the track-changing mechanism 3. The notch 2141 on the second gear 214 can effectively prevent collision with the gear on the track-changing mechanism 3. When track changing is required, rotating the second gear 214 can achieve meshing between the second gear and the gear on the track-changing mechanism, that is, the second gear and the gear on the track-changing mechanism switch between "meshing-non-meshing-meshing-non-meshing-…-meshing-non-meshing-meshing-non-meshing", so that the second gear 214 drives the first bevel gear 334 of the track-changing mechanism 3 to rotate.

[0039] Preferably, the second transmission mechanism includes a fourth gear 212 and a third gear 213, with the second gear 214 meshing with the third gear 213, the third gear 213 meshing with the fourth gear 212, and the fourth gear 212 rotating coaxially with the second bevel gear 211.

[0040] The movable guide rail 32 is an I-shaped guide rail, with the bottom sides of both sides forming guide surfaces for the rollers 23 on the charging pack 2 to slide. A U-shaped connecting frame 22 is provided on the top of the outer shell 21 of the pack. The rollers 23 are installed inside the U-shaped connecting frame 22, and the bottoms of the rollers 23 on both sides are in contact with the rails on both sides of the movable guide rail 32. This allows the outer shell 21 of the pack to be suspended on the movable guide rail 32 via the rollers 23, and the charging pack 2 to move on the movable guide rail 32. Similarly, the charging guide rail 1 is connected to the charging pack 2 in the same way.

[0041] At least two sets of movable guide rails 32 are arranged on the transverse guide rail 31 along its length. The two sets of movable guide rails 32 are linked and move together along the length of the transverse guide rail 31. When the charging pack 2 malfunctions (has a charging task, is damaged, or has no power, etc.), the charging pack 2 moves to a movable guide rail 32 at a certain gap, and then the transverse drive motor 216 ultimately drives the first bevel gear 334 to rotate. While rotating, the first bevel gear 334 moves along the axial direction of the lead screw 332, driving multiple sets of movable guide rails 32 to move synchronously, moving another set of movable guide rails 32 to align with the charging guide rail 1. The charging pack 2 transitions from one section of the charging guide rail 1 to another section of the charging guide rail 1 via the movable guide rail 32, realizing the smooth sliding of the charging pack 2, thereby enabling the charging pack to be moved to any specified position on the charging guide rail 1. Regarding how to control the charging pack 2 to stop precisely at the specified position on the charging guide rail 1, the method described in invention patent application 202211360889.5 can be referred to.

[0042] In addition, in order to expand the applicability of the charging pack 2 and make it suitable for charging cables of different sizes, a specific internal structure of the charging pack 2 is also provided.

[0043] The charging pack 2 includes a housing, within which are disposed a drive mechanism 201, a first transmission mechanism 202, a second transmission mechanism 203, a third transmission mechanism 204, a fourth transmission mechanism 206, a fifth transmission mechanism 207, and a sixth transmission mechanism 208. The drive mechanism 201, first transmission mechanism 202, second transmission mechanism 203, third transmission mechanism 204, fourth transmission mechanism 206, and fifth transmission mechanism 207 are fixedly installed within the housing, while the sixth transmission mechanism 208 is movably installed within the housing. One end of the charging cable 205 passes through the third transmission mechanism 204 and the sixth transmission mechanism 208 and connects to the charging gun.

[0044] The drive mechanism 201 includes a drive motor 2011 fixedly connected inside the housing. A worm gear 2012 is fixedly connected to the end of the output shaft of the drive motor 2011. The worm gear 2012 can rotate with the output shaft of the drive motor 2011.

[0045] The first transmission mechanism 202 includes a first driving gear 2021 and a first driven gear 2022, which are coaxially connected and rotate together. The first driving gear 2021 is connected to a worm gear 2012, and the drive motor 2011 can drive the first driving gear 2021 and the first driven gear 2022 to rotate through the worm gear 2012.

[0046] The second transmission mechanism 203 includes a second driving gear 2032 and a second driven gear 2031, which are coaxially connected and rotate together. The second driving gear 2032 meshes with the first driven gear 2022, and the drive mechanism 201 can drive the second driving gear 2032 and the second driven gear 2031 to rotate through the first transmission mechanism 202.

[0047] The third transmission mechanism 204 includes a fourth driving gear 2042 and a driving rubber wheel 2041, which are coaxially connected and rotate together. The second driven gear 2031 of the second transmission mechanism 203 meshes with the fourth driving gear 2042, and the drive mechanism 201 can drive the fourth driving gear 2042 and the driving rubber wheel 2041 to rotate through the first transmission mechanism 202 and the second transmission mechanism 203.

[0048] The fourth transmission mechanism 206 and the fifth transmission mechanism 207 each include only one gear. The fourth driving gear 2042, the gear of the fourth transmission mechanism 206, and the gear of the fifth transmission mechanism 207 mesh in sequence. The driving mechanism 201 can drive the gear of the fifth transmission mechanism 207 to rotate through the first transmission mechanism 202, the second transmission mechanism 203, the third transmission mechanism 204, and the fourth transmission mechanism 206.

[0049] The sixth transmission mechanism 208 includes a sixth driving gear 2081 and a driven rubber wheel 2082, which are coaxially connected and rotate together. The drive mechanism 201 can drive the sixth driving gear 2081 and the driven rubber wheel 2082 of the sixth transmission mechanism 208 to rotate through the first transmission mechanism 202, the second transmission mechanism 203, the third transmission mechanism 204, the fourth transmission mechanism 206, and the fifth transmission mechanism 207.

[0050] Furthermore, a locking groove for engaging the charging cable 205 is formed on the cylindrical surface of the driving rubber wheel 2041. A locking groove for engaging the charging cable 205 is also formed on the cylindrical surface of the driven rubber wheel 2082. The locking grooves on the driving rubber wheel 2041 of the third transmission mechanism 204 and the driven rubber wheel 2082 are compatible. The combined shape of the locking grooves of the driving rubber wheel 2041 and the driven rubber wheel 2082 is compatible with the locking grooves of the driven rubber wheel 2082. The charging cable 205 passes between the driving rubber wheel 2041 of the third transmission mechanism 204 and the driven rubber wheel 2082 of the sixth transmission mechanism 208, thereby effectively engaging the compatible rubber wheels 2041 and 2082. The rotating driving rubber wheels 2041 and 2082 will drive the charging cable 205 to move under the action of friction.

[0051] Furthermore, the fifth transmission mechanism 207 is movably connected to the sixth transmission mechanism 208 via a connecting rod 2099. Both the fifth transmission mechanism 207 and the sixth transmission mechanism 208 are connected to the connecting rod 2099. Since the fifth transmission mechanism 207 is fixed inside the housing, the sixth transmission mechanism 208 is movably connected via the connecting rod 2099, allowing it to rotate around the fifth transmission mechanism 207 along with the connecting rod 2099. However, the sixth transmission mechanism 208 is also connected to the third transmission mechanism 204 via a spring 2010. The spring 2010 can tightly press the third transmission mechanism 204 and the sixth transmission mechanism 208 against the charging cable 205.

Claims

1. A charging pack track-changing mechanism, characterized in that: The system includes a rail changing frame (3); the rail changing frame (3) includes a transverse guide rail (31), a movable guide rail (32) is provided on the transverse guide rail (31), and a rail changing mechanism (33) for pushing the movable guide rail (32) to move along the transverse guide rail (31) is fixedly connected to the transverse guide rail (31); the rail changing mechanism (33) includes a screw seat (331) fixedly connected to the transverse guide rail (31), a screw (332) fixedly connected to the screw seat (331), a connecting plate (333) and a first bevel gear (334) are sleeved on the screw (332), the connecting plate (333) and the first bevel gear (334) are connected by bearings, and the first bevel gear (334) is threadedly connected to the screw (332); It also includes a drive mechanism for driving the first bevel gear (334) to rotate. The drive mechanism includes a transverse drive motor (216) mounted on the outer shell (21) of the package body, and a second bevel gear (211) driven by the transverse drive motor (216) and freely rotatable on the outer shell (21). The second bevel gear (211) meshes perpendicularly with the first bevel gear (334). A worm gear (215) is provided at the end of the output shaft of the transverse drive motor (216). The worm gear (215) is connected to the first gear (217) through a first transmission mechanism. The second gear (214) is connected to the second bevel gear (211) through a second transmission mechanism and drives the second bevel gear (211) to rotate. A notch (2141) is provided on the second gear (214), and the notch (2141) is arranged along the axial direction of the second gear (214). The charging pack (2) includes a shell, inside which are arranged a drive mechanism (201), a first transmission mechanism (202), a second transmission mechanism (203), a third transmission mechanism (204), a fourth transmission mechanism (206), a fifth transmission mechanism (207), and a sixth transmission mechanism (208). The fifth transmission mechanism (207) is movably connected to the sixth transmission mechanism (208) via a connecting rod (209). Both the fifth transmission mechanism (207) and the sixth transmission mechanism (208) are connected to the connecting rod (209). The sixth transmission mechanism (208) is hinged and can rotate around the fifth transmission mechanism (207) together with the connecting rod (209). The sixth transmission mechanism (208) is also connected to the third transmission mechanism (204) through a spring (2010). The spring (2010) presses the charging cable (205) between the third transmission mechanism (204) and the sixth transmission mechanism (208). One end of the charging cable (205) passes through the third transmission mechanism (204) and the sixth transmission mechanism (208).

2. The charging pack track-changing mechanism as described in claim 1, characterized in that: The inner side of the transverse guide rail (31) is provided with a groove (311); the two sides of the movable guide rail (32) are provided with sliding wheels (34), which are locked in the groove (311) and can move along the length of the groove (311).

3. A charging device, comprising a charging rail (1), a charging pack (2), and a mounting bracket (4), wherein the charging pack (2) is connected to the charging rail (1) and is movable along the direction of the charging rail (1), characterized in that: The charging guide rail (1) has a notch corresponding to the position of each mounting bracket (4). The bottom of the mounting bracket (4) is provided with a charging pack changing mechanism. The charging pack changing mechanism adopts the charging pack changing mechanism according to any one of claims 1-2. When the moving guide rail (32) on the charging pack changing mechanism moves to the designated notch of the charging guide rail (1), the moving guide rail (32) is connected to the charging guide rail (1). The charging pack (2) is movably connected to the moving guide rail (32). The charging pack (2) is provided with a drive mechanism for driving the first bevel gear (334) to rotate.

4. A charging device as described in claim 3, characterized in that: The charging pack (2) includes a pack body shell (21), which is suspended on a moving guide rail (32) by rollers (23) on the pack body shell (21).

5. A charging device as described in claim 3, characterized in that: The movable guide rail (32) is an I-shaped guide rail; a U-shaped connecting frame (22) is provided on the top of the outer shell (21), and rollers (23) are installed inside the U-shaped connecting frame (22). The bottom of the rollers (23) on both sides are in contact with the rails on both sides of the movable guide rail (32). The outer shell (21) of the package is suspended on the movable guide rail (32) by the rollers (23).

6. A charging device as described in claim 3, characterized in that: At least two sets of movable guide rails (32) are provided on the transverse guide rail (31) along the length direction of the transverse guide rail (31). The two sets of movable guide rails (32) are linked and move together along the length direction of the transverse guide rail (31).

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