Rail-mounted new energy vehicle charging device and charging connection method

Abstract

The invention relates to the technical field of charging devices, and discloses a rail-mounted new energy vehicle charging device and a charging connection method, and the device comprises a conveying rail which is provided with a plurality of charging seats at one side; the charging boxes are detachably connected to the charging base, and the charging boxes are connected with the new energy vehicle through the charging base; and the at least one rail robot is connected to the conveying rail in a sliding mode, and the rail robot is used for carrying the charging boxes among the multiple charging bases. According to the scheme, the conveying track is arranged above the parking lot, and the charging guns and the charging boxes are separately arranged, so that the number of the charging boxes can be effectively reduced. A charging gun and a charging base are arranged beside each parking space. When the vehicle on the target parking space needs to be charged, the track robot grabs the idle charging box and moves the idle charging box to the corresponding charging position, and then the charging box is connected to the charging base to charge the vehicle. Therefore, the maximum utilization of charging resources is realized, the charging efficiency is improved, and the cost of charging facilities is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of charging devices, and in particular to a rail-type charging device for new energy vehicles and a charging connection method. Background Art

[0002] At present, most underground parking lots use the solution of fixed-point charging piles. Due to economic cost constraints, not all parking spaces are equipped with charging piles, which results in some parking spaces not having charging services. Due to the randomness of parking, parking spaces that can provide charging services will be occupied. The combination of multiple situations will greatly reduce the charging efficiency of new energy vehicles, especially in developed cities with limited land use. The situation will be more serious. Blindly increasing the number of charging piles will greatly increase the cost of building charging stations, thereby limiting the development of charging facilities.

[0003] In addition, the existing charging service settings mainly rely on ground systems, and most of the proposed solutions will take up too much ground parking space, while the space above is only used for infrastructure such as lighting, electricity or pipelines, resulting in a waste of space resources above the charging parking spaces.

[0004] Therefore, in view of the above-mentioned defects, the prior art still needs to be improved and developed. Summary of the invention

[0005] The technical problem to be solved by the present invention is that, in view of the above-mentioned defects of the prior art, a rail-type new energy vehicle charging device and a charging connection method are provided, aiming to reduce the space occupied by charging facilities, reduce the cost of charging facilities, and improve the utilization efficiency of charging resources.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows:

[0007] In order to solve the above technical problems, the first aspect of the embodiment of the present application provides a rail-type new energy vehicle charging device, including:

[0008] A conveying track, with a plurality of charging seats arranged on one side of the conveying track;

[0009] Several charging boxes, which are detachably connected to the charging base, and the charging boxes are connected to the new energy vehicle through the charging base;

[0010] And at least one track robot, the track robot is slidably connected to the conveying track, and the track robot is used to carry the charging box between several charging seats.

[0011] This embodiment is further configured as follows: the rail robot includes: a base, a walking mechanism and a grasping mechanism, the walking mechanism and the grasping mechanism are both arranged on the base, the walking mechanism is slidably connected to the conveying track, and the grasping mechanism is used to grasp or place the charging box.

[0012] This embodiment is further configured such that a telescopic mechanism is provided between the grasping mechanism and the base, and the telescopic mechanism is used to move the grasping mechanism; the telescopic mechanism includes:

[0013] A first slide rail, the first slide rail is arranged on the base;

[0014] A second slide rail, the second slide rail is slidably connected to the first slide rail, the grabbing mechanism is slidably connected to the second slide rail, and the second slide rail and the first slide rail have the same extension direction;

[0015] And a driving assembly, the driving assembly is used to drive the grabbing mechanism to move along the extension direction of the first slide rail.

[0016] This embodiment is further configured that the driving assembly includes: a first screw rod, a second screw rod and a first driving motor, the first screw rod and the second screw rod are movably connected to the second slide rail, the first driving motor is arranged on the second slide rail, and the first driving motor is used to drive the first screw rod and the second screw rod;

[0017] Among them, the first slider and the second slider are slidably connected to the first screw rod and the second screw rod respectively, the first slider is engaged with the first screw rod, the first slider and the second slider are engaged with the second screw rod, the first slider is fixedly connected to the base, and the second slider is fixedly connected to the grasping mechanism.

[0018] This embodiment is further configured such that the threads on the first screw rod and the second screw rod are in opposite directions.

[0019] This embodiment is further configured such that the first screw rod and the second screw rod are both connected to the first drive motor via a belt transmission.

[0020] This embodiment is further configured that the walking mechanism includes at least two sets of walking wheel assemblies; the walking wheel assemblies include:

[0021] An installation fixing seat is arranged on the base;

[0022] At least one lower limiting wheel, the lower limiting wheel is used to abut against the lower end of the conveying track;

[0023] A left limiting wheel, the left limiting wheel is used to abut against one side of the conveying track;

[0024] The right limiting wheel is used to abut against the other side of the conveying track;

[0025] and at least one driving wheel, the driving wheel being used to abut against the upper end of the conveying track;

[0026] Among them, the lower limiting wheel, the left limiting wheel, the right limiting wheel and the driving wheel are all movably connected to the mounting and fixing seat. The mounting and fixing seat is also provided with a second driving motor, and the second driving motor is used to drive the driving wheel.

[0027] This embodiment is further configured such that two driving wheels are arranged on the mounting base, and the two driving wheels are located on both sides of the upper end of the conveying track.

[0028] This embodiment is further configured such that the lower limit wheel, the left limit wheel, the right limit wheel and the driving wheel are all rubber wheels, the transmission track is an aluminum alloy track, and the base is an aluminum alloy base.

[0029] A second aspect of the embodiment of the present application provides a charging connection method based on any one of the rail-type new energy vehicle charging devices of the first aspect, and the charging connection method comprises the following steps:

[0030] Obtain a charging request instruction, and control the track robot to grab an idle charging box plugged into the charging seat along the conveying track;

[0031] The idle charging box is transported along the conveying track to a predetermined position on one side of the target charging station;

[0032] Insert the charging box into the target charging base through the telescopic mechanism;

[0033] When it is detected that the charging box is connected to the charging gun on the target charging seat, the connection status between the charging gun and the vehicle is detected;

[0034] When the connection status is on, the charging box is awakened and charging is started.

[0035] Beneficial effects: Compared with the prior art, the present invention provides a rail-type charging device and charging connection method for new energy vehicles. This solution sets the transmission track above the parking lot. The charging gun and the charging box are separated, which can effectively reduce the number of charging boxes. Charging guns and charging seats are provided on both sides of the parking spaces. When the vehicle in the target parking space needs to be charged, the rail robot grabs the idle charging box and moves it to the corresponding charging position, and then connects the charging box to the charging seat to charge the vehicle. In this way, the maximum utilization of charging resources is achieved, the charging efficiency is improved, and the cost of charging facilities is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 It is a schematic diagram of the overall structure of a rail-type new energy vehicle charging device of the present invention;

[0038] Figure 2It is a structural schematic diagram of a track robot of a track-type new energy vehicle charging device of the present invention;

[0039] Figure 3 It is another structural schematic diagram of a rail robot of a rail-type new energy vehicle charging device of the present invention;

[0040] Figure 4 It is another structural schematic diagram of a rail robot of a rail-type new energy vehicle charging device of the present invention;

[0041] Figure 5 It is another structural schematic diagram of a rail robot of a rail-type new energy vehicle charging device of the present invention;

[0042] Figure 6 yes Figure 5 A magnified schematic diagram of the part marked with A.

[0043] In the figure: 100, conveying track; 110, charging base; 200, charging box; 300, track robot; 310, base; 320, walking mechanism; 321, walking wheel assembly; 322, mounting base; 323, lower limit wheel; 324, left limit wheel; 325, right limit wheel; 326, driving wheel; 327, second drive motor; 330, grabbing mechanism; 340, telescopic mechanism; 341, first slide rail; 342, second slide rail; 343, drive assembly; 3431, first screw rod; 3432, second screw rod; 3433, first drive motor; 3434, first slider; 3435, second slider; 3436, belt. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0045] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0046] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, it can also be the internal connection of two components, it can be a wireless connection, or it can be a wired connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In addition, the technical features involved in the different embodiments of the present invention described above can be combined with each other as long as they do not conflict with each other.

[0048] In a first aspect, the embodiment of the present invention provides Figure 1 , Figure 2 and Figure 3 A rail-type new energy vehicle charging device is shown, which is installed at the top of a large parking lot and is used to charge new energy vehicles. Its main structure includes: a conveying track 100, several charging boxes 200 and at least one rail robot 300, and several charging seats 110 are arranged on one side of the conveying track 100. Among them, the charging box 200 is used to transform and output the charging power supply, and the charging seat 110 is connected to a charging gun for connecting the vehicle, and the charging box 200 is connected to the new energy vehicle through the charging seat 110 for charging. The conveying track 100 is suspended at the top of the parking lot, specifically above the parking space. A charging seat 110 is arranged next to the conveying track 100 (it can be the side of the conveying track 100 or the lower end of the conveying track 100), and the charging seat 110 can be fixed in the form of suspension or in the form of a column, wherein the column is fixed next to the parking space. The charging box 200 is detachably connected to the charging seat 110, and the charging box 200 is connected to the new energy vehicle through the charging seat 110. The rail robot 300 is slidably connected to the conveying track 100, and the rail robot 300 is used to carry the charging box 200 between several charging seats 110. The space occupied by the charging facilities is reduced, the cost of the charging facilities is reduced, and the utilization efficiency of the charging resources is improved.

[0049] At present, most underground parking lots use the solution of fixed-point charging piles. Due to economic cost constraints, not all parking spaces are equipped with charging piles, which results in some parking spaces not having charging services. Due to the randomness of parking, parking spaces that can provide charging services will be occupied. The combination of multiple situations will greatly reduce the charging efficiency of new energy vehicles, especially in developed cities with limited land use. The situation will be more serious. Blindly increasing the number of charging piles will greatly increase the cost of building charging stations, thereby limiting the development of charging facilities.

[0050] It should be noted that there are currently some track-type charging piles installed on the top of the parking lot. However, the traditional track-type charging pile is one charging box 200 corresponding to one or two charging guns. Before moving the charging box 200, the charging gun needs to be stored to prevent the charging gun from causing collisions with vehicles or pedestrians on the route. In this case, the charging gun is separated from the charging box 200. Charging guns are set between the parking spaces, and the charging guns are set corresponding to the parking spaces. The charging box 200 can be moved to the position where charging is required by the track robot 300. When the target parking space needs to be charged, the charging robot grabs the charging box 200 and moves it to the corresponding charging position to connect the charging box 200 and the charging gun. In this way, the maximum utilization of charging resources (especially the charging box 200) is achieved, the charging efficiency is improved, and the cost of charging facilities is reduced.

[0051] The present invention proposes a new type of rail-type electric vehicle charging robot system. First, the robot rail system is fixed to the ceiling by hoisting, and the robot is suspended on the rail, with the lowest point 2.5 meters above the ground, which fully meets the scene requirements of the underground parking lot for family cars. The charging pile body is provided with transportation and movement operations from the space above the entire underground parking lot (see Figure 1 ), can provide a wider charging area, transforming the original solution of "car looking for charging pile" into "pile looking for car", providing a more efficient charging service. Figure 2 The mobile chassis, box-type charging pile and track support are shown. The rear lower part of the mobile chassis provides a location for the installation of the robotic arm, making it possible for future fully automatic charging solutions.

[0052] Among them, charging guns are arranged between the parking spaces, and the charging guns are arranged corresponding to the parking spaces. The charging box 200 can be moved to the position where charging is required through the track robot 300, and connected to the charging gun, so as to maximize the use of charging resources, improve charging efficiency, and reduce the cost of charging facilities.

[0053] Further, such as Figure 1 , Figure 2 As shown, the rail robot 300 includes: a base 310, a walking mechanism 320 and a grabbing mechanism 330. The base 310 serves as the overall framework of the rail robot 300 and provides a fixed foundation for other structural components. The walking mechanism 320 enables the rail robot 300 to walk on the conveying track 100. The grabbing mechanism 330 enables the rail robot 300 to grab and move the charging box 200. Among them, the walking mechanism 320 and the grabbing mechanism 330 are both arranged on the base 310, the walking mechanism 320 is slidably connected to the conveying track 100, and the grabbing mechanism 330 is used to grab or put the charging box 200.

[0054] Further, such as Figure 2 , Figure 3 and Figure 4 As shown, a telescopic mechanism 340 is also arranged between the grasping mechanism 330 and the base 310, and the telescopic mechanism 340 is used to move the grasping mechanism 330; the telescopic mechanism 340 includes: a first slide rail 341, a second slide rail 342 and a driving assembly 343, the first slide rail 341 is arranged on the base 310, the second slide rail 342 is slidably connected to the first slide rail 341, the grasping mechanism 330 is slidably connected to the second slide rail 342, the second slide rail 342 and the first slide rail 341 have the same extension direction, and the driving assembly 343 is used to drive the grasping mechanism 330 to move along the extension direction of the first slide rail 341.

[0055] It should be noted that the telescopic mechanism 340 extends toward the charging seat 110, and the telescopic mechanism 340 is used to drive the grasping mechanism 330 to approach or move away from the charging seat 110, so as to facilitate the connection or separation between the charging seat 110 and the charging box 200. When the rail robot 300 carries the charging box 200, the charging box 200 is moved as close to the center of the conveying track 100 as possible by contracting the telescopic mechanism 340, so as to prevent the charging box 200 from scratching obstacles on the walking path of the rail robot 300, and effectively prevent the rail robot 300 from occupying too much space in the direction of travel.

[0056] In addition, in this embodiment, a first slide rail 341 and a second slide rail 342 are provided, the first slide rail 341 is provided on the base 310, the second slide rail 342 is slidably connected to the first slide rail 341, the gripping mechanism 330 is slidably connected to the second slide rail 342, and the second slide rail 342 extends in the same direction as the first slide rail 341. The driving assembly 343 drives the first slide rail 341 and the second slide rail 342 to extend or retract in the same direction.

[0057] In some other embodiments, the telescopic mechanism 340 includes: a first slide rail 341, a second slide rail 342, a third slide rail and a driving assembly 343, the first slide rail 341 is set on the base 310, the second slide rail 342 is slidably connected to the first slide rail 341, the third slide rail is slidably connected to the second slide rail 342, the grasping mechanism 330 is slidably connected to the third slide rail, the third slide rail and the second slide rail 342 have the same extension direction as the first slide rail 341, and the driving assembly 343 is used to drive the grasping mechanism 330 to move along the extension direction of the first slide rail 341.

[0058] It is understandable that, in the above embodiment, by stacking multiple slide rails, the extension length of the telescopic mechanism 340 can be effectively increased, so that it occupies a smaller space in the retracted state. In the retracted state, the charging box 200 can be placed as close as possible to the center of the conveying track 100 to prevent the charging box 200 from scratching obstacles on the walking path of the track robot 300, effectively preventing the track robot 300 from occupying too much space in the direction of travel.

[0059] Further, such as Figure 3 , Figure 4 and Figure 5 As shown, the driving assembly 343 includes: a first screw rod 3431, a second screw rod 3432 and a first driving motor 3433, the first screw rod 3431 and the second screw rod 3432 are movably connected to the second slide rail 342, the first driving motor 3433 is arranged on the second slide rail 342, and the first driving motor 3433 is used to drive the first screw rod 3431 and the second screw rod 3432;

[0060] The first screw rod 3431 and the second screw rod 3432 are slidably connected with a first slider 3434 and a second slider 3435, respectively. The first slider 3434 is meshed with the first screw rod 3431, and the first slider 3434 and the second slider 3435 are meshed with the second screw rod 3432. The first slider 3434 is fixedly connected to the base 310, and the second slider 3435 is fixedly connected to the grabbing mechanism 330. When the first screw rod 3431 rotates, the first slider 3434 can be moved along the extension direction of the first screw rod 3431. When the second screw rod 3432 rotates, the second slider 3435 can be moved along the extension direction of the second screw rod 3432. In this way, the grabbing mechanism 330 is pushed to move along the extension direction of the first screw rod 3431 and the second screw rod 3432.

[0061] In this embodiment, the first screw rod 3431 and the second screw rod 3432 are driven by the same driving motor.

[0062] In some other embodiments, the first screw rod 3431 and the second screw rod 3432 are driven by two driving motors with different driving signals respectively.

[0063] Further, such as Figure 3 , Figure 4 As shown, the threads on the first screw rod 3431 and the second screw rod 3432 are in opposite directions. In this embodiment, the first screw rod 3431 and the second screw rod 3432 are driven by the same drive motor. Figure 3 , Figure 4As shown, the first screw rod 3431 and the second screw rod 3432 are connected to the driving motor through the transmission member. The rotation direction of the first screw rod 3431 and the second screw rod 3432 is the same as the rotation direction of the driving motor. Since the driving assembly 343 is arranged on the second slide rail 342, the first screw rod 3431 and the second screw rod 3432 are driven by a driving motor at the same time. It is necessary to set the first slider 3434 and the second slider 3435 on the first screw rod 3431 and the second screw rod 3432 in opposite directions when they move synchronously, so as to realize the telescopic function. Therefore, in order to make the first slider 3434 and the second slider 3435 move synchronously in opposite directions. It is necessary to set the thread directions on the first screw rod 3431 and the second screw rod 3432 in opposite directions.

[0064] Further, such as Figure 3 , Figure 4 As shown, the first screw rod 3431 and the second screw rod 3432 are both connected to the first drive motor 3433 through the belt 3436. It should be noted that the belt 3436 transmission can effectively reduce the working noise between the transmission mechanisms, and the belt 3436 also has a certain buffering effect, which can effectively improve the operation stability of the track robot 300.

[0065] Further, such as Figure 5 , Figure 6 As shown, the walking mechanism 320 includes at least two groups of walking wheel assemblies 321; the walking wheel assembly 321 includes: an installation fixed seat 322, at least one lower limit wheel 323, a left limit wheel 324, a right limit wheel 325 and at least one driving wheel 326, the installation fixed seat 322 is set on the base 310, the lower limit wheel 323 is used to abut the lower end of the conveying track 100, the left limit wheel 324 is used to abut one side of the conveying track 100, the right limit wheel 325 is used to abut the other side of the conveying track 100, and the driving wheel 326 is used to abut the upper end of the conveying track 100. Among them, the lower limit wheel 323 can limit the track robot 300 from loosening upwards below the track; the left limit wheel 324 can prevent the track robot 300 from loosening from the left side; the right limit wheel 325 can prevent the track robot 300 from loosening from the right side; the driving wheel 326 is used to provide driving force, through which the track robot 300 as a whole can slide on the conveying track 100.

[0066] Under normal circumstances, there is a movable gap between the lower limiting wheel 323, the left limiting wheel 324, the right limiting wheel 325 and the track to prevent excessive friction between the walking mechanism 320 and the track, thereby reducing the mobility of the track robot 300. In other embodiments, the lower limiting wheel 323, the left limiting wheel 324, and the right limiting wheel 325 may also be provided with an elastic buffer device to provide a buffer between each movable wheel and the track, thereby improving the walking performance of the track robot 300.

[0067] Among them, the lower limiting wheel 323, the left limiting wheel 324, the right limiting wheel 325 and the driving wheel 326 are all movably connected to the mounting base 322. The mounting base 322 is also provided with a second driving motor 327, and the second driving motor 327 is used to drive the driving wheel 326.

[0068] Further, such as Figure 5 , Figure 6 As shown, two driving wheels 326 are provided on the mounting base 322, and the two driving wheels 326 are located on both sides of the upper end of the conveying track 100. The driving wheels 326 are used to provide driving force, and the track robot 300 as a whole can slide on the conveying track 100 through the driving wheels 326. The two driving wheels 326 are located on both sides of the upper end of the conveying track 100, so that the driving force can be balanced and dispersed on the conveying track 100. The track robot 300 can walk more smoothly and freely on the conveying track 100, avoiding the wear of one side of the track.

[0069] Further, such as Figure 5 , Figure 6 As shown, the lower limit wheel 323, the left limit wheel 324, the right limit wheel 325 and the driving wheel 326 are all rubber wheels. The rubber wheels have a certain buffering effect, so the noise is smaller when the rubber wheels are in contact with the conveying track 100 and rolling. Moreover, the friction coefficient of the rubber wheels is relatively high. The stability of the movement of the track robot 300 can be effectively improved. The conveying track 100 is an aluminum alloy track, and the base 310 is an aluminum alloy base 310. The aluminum alloy track can reduce the overall mass of the conveying track 100 and can effectively reduce the pressure on the suspension connection components of the conveying track 100. Improve the safety of the overall device. The base 310 is an aluminum alloy base 310, which can also reduce the overall weight of the track robot 300, reduce the weighing pressure of the conveying track 100, and improve the operating stability of the device.

[0070] A second aspect of the embodiment of the present application provides a charging connection method based on any one of the rail-type new energy vehicle charging devices of the first aspect, and the charging connection method comprises the following steps:

[0071] Step 1: Obtain a charging request instruction, and control the track robot 300 to grab an idle charging box 200 plugged into the charging seat 110 along the conveying track 100;

[0072] Specifically, when receiving a charging request signal from a client or a vehicle, the host performs self-checking and detects that the charging conditions are met, and then controls the track robot 300 to grab the idle charging box 200 plugged into the charging seat 110 along the conveying track 100. The charging request signal includes the serial number of the target charging seat 110, and the idle charging box 200 may be connected to a charging seat 110 that has been charged in the past, or may have been grabbed by the track robot 300 before.

[0073] Step 2: Move the idle charging box 200 along the conveying track 100 to the target charging seat 110;

[0074] Specifically, according to the charging request instruction, the idle charging box 200 is transported along the conveying track 100 to a predetermined position on one side of the target charging seat 110;

[0075] Step 3: plug the charging box 200 into the target charging seat 110 through the telescopic mechanism 340;

[0076] Step 4, after it is detected that the charging box 200 is connected to the charging gun on the target charging seat 110, the connection status between the charging gun and the vehicle is detected;

[0077] Step 5: When the connection status is on, wake up the charging box 200 and start charging.

[0078] In summary, the present invention proposes a rail-type new energy vehicle charging device and a charging connection method. In this solution, the transmission track 100 is set above the parking lot. The charging gun and the charging box 200 are separated, which can effectively reduce the number of charging boxes 200. Charging guns and charging seats 110 are provided on both sides of the parking spaces. When the vehicle in the target parking space needs to be charged, the rail robot 300 grabs the idle charging box 200, moves it to the corresponding charging position, and then connects the charging box 200 to the charging seat 110 to charge the vehicle. In this way, the maximum utilization of charging resources is achieved, the charging efficiency is improved, and the cost of charging facilities is reduced.

[0079] It should be understood that the application of the present invention is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A rail-type new energy vehicle charging device, characterized in that: include: A conveying track, one side of which is provided with a plurality of charging seats; Several charging boxes, which are detachably connected to the charging base, and are connected to the new energy vehicle through the charging base; And at least one track robot, which is slidably connected to the conveying track and is used to carry the charging box between several charging seats.

2. A rail-type new energy vehicle charging device according to claim 1, characterized in that: The rail robot comprises: a base, a walking mechanism and a grasping mechanism, wherein the walking mechanism and the grasping mechanism are both arranged on the base, the walking mechanism is slidably connected to the conveying track, and the grasping mechanism is used to grasp or place the charging box.

3. A rail-type new energy vehicle charging device according to claim 2, characterized in that: A telescopic mechanism is also provided between the grabbing mechanism and the base, and the telescopic mechanism is used to move the grabbing mechanism; the telescopic mechanism comprises: a first slide rail, wherein the first slide rail is disposed on the base; a second slide rail, the second slide rail being slidably connected to the first slide rail, the grabbing mechanism being slidably connected to the second slide rail, and the second slide rail and the first slide rail extending in the same direction; and a driving assembly, wherein the driving assembly is used to drive the grabbing mechanism to move along the extension direction of the first slide rail.

4. A rail-type new energy vehicle charging device according to claim 3, characterized in that: The driving assembly comprises: a first screw rod, a second screw rod and a first driving motor, the first screw rod and the second screw rod are movably connected to the second slide rail, the first driving motor is arranged on the second slide rail, and the first driving motor is used to drive the first screw rod and the second screw rod; Among them, the first slider and the second slider are slidably connected to the first screw rod and the second screw rod respectively, the first slider is engaged with the first screw rod, the first slider and the second slider are engaged with the second screw rod, the first slider is fixedly connected to the base, and the second slider is fixedly connected to the grabbing mechanism.

5. A rail-type new energy vehicle charging device according to claim 4, characterized in that: The threads on the first screw rod and the second screw rod are in opposite directions.

6. A rail-type new energy vehicle charging device according to claim 4, characterized in that: The first screw rod and the second screw rod are both connected to the first driving motor through belt transmission.

7. A rail-type new energy vehicle charging device according to claim 2, characterized in that: The walking mechanism comprises at least two sets of walking wheel assemblies; the walking wheel assemblies comprise: An installation fixing seat, the installation fixing seat is arranged on the base; At least one lower limiting wheel, the lower limiting wheel is used to abut against the lower end of the conveying track; A left limiting wheel, the left limiting wheel is used to abut against one side of the conveying track; A right side limiting wheel, the right side limiting wheel is used to abut against the other side of the conveying track; and at least one driving wheel, the driving wheel being used to abut against the upper end of the conveying track; Among them, the lower limiting wheel, the left limiting wheel, the right limiting wheel and the driving wheel are all movably connected to the mounting and fixing seat, and a second driving motor is also arranged on the mounting and fixing seat, and the second driving motor is used to drive the driving wheel.

8. A rail-type new energy vehicle charging device according to claim 7, characterized in that: The mounting fixing seat is provided with two driving wheels, and the two driving wheels are located on both sides of the upper end of the conveying track.

9. A rail-type new energy vehicle charging device according to claim 7, characterized in that: The lower limiting wheel, the left limiting wheel, the right limiting wheel and the driving wheel are all rubber wheels, the transmission track is an aluminum alloy track, and the base is an aluminum alloy base.

10. A charging connection method based on the rail-type new energy vehicle charging device according to any one of claims 1 to 9, characterized in that: The charging connection method comprises the following steps: Obtain a charging request instruction, and control the track robot to grab an idle charging box plugged into the charging seat along the conveying track; Transporting the idle charging box along the conveying track to a predetermined position on one side of the target charging seat; Inserting the charging box into the target charging seat through a telescopic mechanism; After it is detected that the charging box is connected to the charging gun on the target charging seat, the connection state between the charging gun and the vehicle is detected; When the connection state is on, the charging box is awakened and charging is started.

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