Mobile shared charging pile system

Abstract

The application discloses a mobile shared charging pile system, which comprises a conveying belt, a robot and a track, and the conveying belt and the track are arranged in layers; an electric pile placing position is arranged above each parking space; the end of the conveying belt is provided with a pile taking position, and the conveying belt can sequentially convey multiple charging piles thereon to the pile taking position; the track comprises a main track, a pile taking track and multiple pile placing tracks which are communicated with the main track, at least one section of the pile taking track is located directly below the pile taking position, each pile placing track corresponds to an electric pile placing position, and at least one section of the pile placing track is located directly below the corresponding electric pile placing position; the bottom of the robot is provided with a steering wheel which can steer, and the top of the robot is provided with a pile taking and placing mechanism. Through optimization of the relative position relationship among the conveying belt, the track and the electric pile placing position, the robot can change tracks as required, and the transportation and transfer of multiple charging piles can be realized by using one robot, so that the cost is low and the use is convenient.

Description

Technical Field

[0001] This invention belongs to the field of charging pile technology, and specifically relates to a mobile shared charging pile system. Background Technology

[0002] For situations where fixed charging stations cannot be installed on the ground in underground parking lots, existing solutions are: 1. Installing fixed charging stations on the roof of parking spaces; 2. Using a track-mounted mobile robot with charging stations. The first solution, if installed in every parking space, would result in low utilization of the charging stations due to the small number of new energy vehicles. If only some spaces are equipped with charging stations, gasoline vehicles might occupy the spaces, preventing new energy vehicles from charging. The second solution involves installing a guide rail on the roof of the parking lot, with the charging station moving to the designated parking space under the robot's guidance. However, existing mobile charging stations only have one main track. If multiple charging stations are installed on the track, they cannot change tracks, causing obstruction problems. Therefore, only one charging station can be installed per track, resulting in low utilization. Furthermore, multiple charging stations cannot coordinate with each other, requiring a control system, which is costly. Summary of the Invention

[0003] This invention addresses the problems of high cost, low utilization rate, and inconvenience in the use of existing shared charging piles by providing a mobile shared charging pile system.

[0004] The objective of this invention is achieved through the following technical solution:

[0005] A mobile shared charging pile system includes a conveyor belt mounted on the top of a parking lot, a robot, and a track for the robot to travel on. The conveyor belt and track are arranged in layers on different planes, with the conveyor belt plane being higher than the track plane. A charging pile placement position is provided above each parking space. A charging pile retrieval position is provided at the end of the conveyor belt, allowing the conveyor belt to sequentially transport multiple charging piles to the retrieval position. The track includes a main track, a charging pile retrieval track connected to the main track, and multiple charging pile placement tracks. At least one section of the charging pile retrieval track is located directly below the charging pile retrieval position. The multiple charging pile placement tracks are connected in parallel to the side of the main track, and each charging pile placement track corresponds to a charging pile placement position, with at least one section of the placement track located directly below its corresponding charging pile placement position. The robot has steering wheels at its bottom and a charging pile retrieval and placement mechanism at its top.

[0006] Preferably, the pile retrieval and placement mechanism includes a lifting arm and a support plate for supporting the charging pile. The support plate is fixed above the lifting arm, and the lifting arm can rise and fall under the drive of the driving component. The sides of the pile retrieval position and the charging pile placement position are provided with side openings for the charging pile to enter and exit. The bottom of the pile retrieval position and the charging pile placement position are provided with bottom openings for the lifting arm and the support plate to enter and exit. The side openings and the bottom openings are connected, and the bottom opening is smaller than the bottom wall of the charging pile.

[0007] Preferably, the pile-taking track is vertically connected to the starting end of the main track, the pile-laying track is vertically connected to the side of the main track at intervals, and the robot's steering wheels can turn 90 degrees under the action of driving force.

[0008] Preferably, the charging pile placement position is hinged with a gravity self-locking device, which includes a first locking plate and a second locking plate that are vertically fixed, and the locking end angle formed by the first locking plate and the second locking plate is adapted to the end angle of the charging pile; a hinge shaft is provided at the connection position between the first locking plate and the second locking plate, and the weight of the second locking plate is greater than the weight of the first locking plate.

[0009] Preferably, the gravity self-locking device can reach the locking position with the hinge shaft as the fulcrum under the gravity of the charging pile. When the gravity self-locking device is in the locking position, the first locking plate extends horizontally, the bottom wall of the charging pile is supported on the first locking plate, and the second locking plate extends vertically and abuts against the side wall of the charging pile. When the charging pile leaves the gravity self-locking device, the gravity self-locking device can reach the release position with the hinge shaft as the fulcrum under its own gravity. When the gravity self-locking device is in the release position, the first locking plate deviates horizontally and extends obliquely upward from the hinge shaft, and the second locking plate deviates vertically and extends obliquely outward from the hinge shaft. The horizontal deviance angle of the first locking plate and the vertical deviance angle of the second locking plate are the same, both being acute angles.

[0010] Preferably, the horizontal offset angle of the first locking plate and the vertical offset angle of the second locking plate are 10 degrees to 60 degrees. When the charging pile enters the charging pile placement position from the side compartment, the height of its bottom wall is H. When the gravity self-locking device is in the release position, the height of the end of its first locking plate is h, where H > h.

[0011] Preferably, each of the charging pile placement positions is provided with a power distribution box connected to an external power source above it. The power distribution box is provided with a downward-extending power sliding contact line, and the lower end of the power sliding contact line is provided with a sliding rail extending from top to bottom. The charging pile is provided with a protruding single-stage current collector, and the upper part of the sliding rail is provided with a guide port for the single-stage current collector to slide into.

[0012] Preferably, the cable reel includes a housing, within which a cable reel is rotatably mounted. The charging cable is wound around the cable reel, and a drive system controls the rotation of the cable reel. One end of the charging cable is a power input terminal, and the other end is a charging terminal. The power input terminal extends from a first outlet hole in the housing and is electrically connected to a single-stage current collector via an electrical control unit. The charging terminal exits through a second outlet hole in the housing and is electrically connected to a charging gun head. The housing also contains a pair of counters for counting the cable length. These counters are driven by a linkage shaft located near the second outlet hole. The linkage shaft rotates when the charging cable is extended or retracted. In this design, the automatic extension and retraction of the charging cable, achieved through the cooperation of the counters in the drive system, allows the charging cable to be completely retracted into the housing, ensuring the environmental safety and cleanliness of the entire charging station.

[0013] Preferably, the cable reel includes a first reel body, a second reel body, and a winding shaft connected between the two reels body. The first reel body, the second reel body, and the winding shaft are coaxially arranged. The charging cable is wound on the winding shaft and located between the first reel body and the second reel body. The first cable outlet is opened on the side wall of the housing, and the second cable outlet is opened on the lower wall of the housing. The linkage shaft is rotatably arranged below the cable reel body and parallel to the winding shaft.

[0014] Preferably, the linkage shaft has a first mating section and a second mating section. The first mating section is located on the lead-out and take-up paths of the charging cable and engages with the charging cable. The second mating section is located below the counter and engages with the drive disk of the counter. During the take-up and untake-up process, the charging cable contacts the first mating section, causing the linkage shaft to rotate. The second mating section of the linkage shaft contacts the drive disk of the counter, counting the lead-out and take-up lengths and feeding back the data to the drive system, thereby achieving automatic take-up and untake-up.

[0015] Preferably, the drive system includes a motor, a forward / reverse speed control module, and a gravity sensor. The forward / reverse speed control module receives an external signal to activate the motor's forward or reverse rotation circuit. The gravity sensor activates the motor's forward rotation circuit when the charging cable is manually pulled. To adapt to different vehicle models and locations, the charging cable release is divided into two stages: automatic and manual release. First, an external release signal controls the motor to activate the forward rotation circuit for cable release. A counter counts the released length. Once the preset length is reached, the forward / reverse speed control module receives a signal to disconnect the motor's forward rotation circuit, and the motor stops working. Then, manually pulling the charging cable activates the gravity sensor, activating the motor's forward rotation circuit to continue releasing the cable. The counter continues to accumulate counts. Once the released length reaches the required level, pulling the charging cable stops, the gravity sensor stops working, the motor stops working, the cable release is complete, and the counter stops counting.

[0016] Compared with existing technologies, this invention has the following advantages: By optimizing the relative positional relationship between the conveyor belt, track, and charging pile placement, and by adopting a multi-branch track design, the track can be changed as needed. Multiple charging piles can be transported and transferred using a single robot, resulting in low cost. Controlling the number of charging piles transported by the robot can achieve peak-hour power rationing, ensuring safe and convenient use. By setting side and bottom openings at the pile retrieval and placement positions, respectively, and coordinating with a pile retrieval and placement mechanism on the robot, the system can be easily retrieved and placed by simply changing the horizontal and vertical positions of the charging piles. The entire system is simple and reliable to operate. The gravity self-locking device and sliding rail ensure reliable connection between the charging piles and external power sources. The gravity self-locking device utilizes the weight of the charging piles to achieve the locking mechanism. The cable reel, using its own weight, can reach the unlock position, achieving automatic locking and unlocking, which is convenient and reliable. The cable reel, through the cooperation of the drive system and counter, enables automatic cable retraction and extension, making it easy to use. The cable can be completely stored inside the housing, ensuring the safety and cleanliness of the entire charging station environment. The counter is driven by a linkage shaft that works with the charging cable. The cable directly acts on the linkage shaft during the cable retraction and extension process, achieving counting in a simple and reliable manner. Cable extension is divided into two stages: automatic and manual. First, an external extension signal controls the motor to activate the forward rotation circuit for cable extension. Once the preset length is reached, the motor stops. Then, manually pulling the charging cable activates the gravity sensor, activating the motor's forward rotation circuit to continue extension until the required length is reached, thus better adapting to different vehicle models and different environments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is another structural schematic diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the track structure in this invention;

[0020] Figure 4 This is a schematic diagram of the charging pile structure in this invention;

[0021] Figure 5 This is a schematic diagram of the robot structure in this invention;

[0022] Figure 6 This is a schematic diagram of the gravity self-locking device in the present invention when it is in the release position;

[0023] Figure 7 This is a schematic diagram of the gravity self-locking device in the present invention when it is in the locked position;

[0024] Figure 8 This is a schematic diagram of the cable reel structure in this invention;

[0025] Figure 9 This is a schematic diagram of the cable reel drive system structure in this invention;

[0026] Figure 10 This is a schematic diagram of the cable reel structure in this invention;

[0027] Figure 11 This is a schematic diagram of the first disk structure in this invention;

[0028] Figure 12 This is a schematic diagram of the second disk structure in this invention;

[0029] Figure 13 This is a schematic diagram of the anti-winding carbon brush structure in this invention;

[0030] Markings in the diagram: Charging pile 10; Single-stage current collector 11; Conveyor belt 20; Pile retrieval position 21; Track 30; Main track 3130; Pile retrieval track 3230; Pile placement track 3330; Robot 40; Pallet 41; Lifting arm 42; Steering wheel 43; Charging pile placement position 50; Gravity self-locking device 51; First locking plate 511; Second locking plate 512; Hinge shaft 513; Power distribution box 60; Power sliding contact line 61; Sliding contact rail 62; Guide port 621; Housing 71; Cable 72. Winding reel; 721. First reel body; 7211. First shaft hole; 722. Second reel body; 7221. Second shaft hole; 723. Winding shaft; 724. Hollowed-out area; 73. Charging cable; 731. Power input terminal; 732. Charging terminal; 733. Charging gun head; 74. Linkage shaft; 75. Drive system; 75. Motor; 751. Forward and reverse speed control module; 752. Gravity sensor; 753. Power input terminal; 754. Digital display module; 76. Counter; 77. Anti-winding carbon brush slip ring; 78. External power supply; 80. Detailed Implementation

[0031] The present invention will be further described below with reference to the embodiments illustrated in the accompanying drawings:

[0032] like Figure 1-5As shown, this embodiment discloses a mobile shared charging pile system 10, which includes a conveyor belt 20 installed on the top of a parking lot, a robot 40, and a track 30 for the robot 40 to travel on. The conveyor belt 20 and the track 30 are arranged in layers, located on different planes, and the plane of the conveyor belt 20 is higher than the plane of the track 30. A charging pile placement position 50 is provided above each parking space. The end of the conveyor belt 20 is provided with a charging pile retrieval position 21, and the conveyor belt 20 can carry multiple charging piles 10 on it. The piles are sequentially transported to the pile-taking position 21. The track 30 includes a main track 3130, a pile-taking track 3230 connected to the main track 3130, and multiple pile-laying tracks 3330. At least one section of the pile-taking track 3230 is located directly below the pile-taking position 21. The multiple pile-laying tracks 3330 are connected in parallel to the side of the main track 3130. Each pile-laying track 3330 corresponds to a pile placement position 50. At least one section of the pile-laying track 3330 is located directly below its corresponding pile placement position 50.

[0033] The robot 40 has steering wheels 43 at its bottom that can turn, and a pile picking and placing mechanism at its top. The pile picking and placing mechanism includes a lifting arm 42 and a support plate 41 for supporting the charging pile 10. The support plate 41 is fixed above the lifting arm 42, and the lifting arm 42 can rise and fall under the drive of the driving component. The sides of the pile picking position 21 and the charging pile placement position 50 are provided with side openings for the charging pile 10 to enter and exit. The bottom of the pile picking position 21 and the charging pile placement position 50 are provided with bottom openings for the lifting arm 42 and the support plate 41 to enter and exit, and the bottom openings are smaller than the bottom wall of the charging pile 10. The pile picking track 3230 is vertically connected to the starting end of the main track 3130, and the pile placing track 3330 is vertically connected to the side of the main track 3130 at intervals. The steering wheels 43 of the robot 40 can turn 90 degrees under the action of driving force.

[0034] Above each of the charging pile placement positions 50, there is a power distribution box 60 connected to an external power source. The power distribution box 60 is provided with a downward-extending power sliding contact line 61, and the lower end of the power sliding contact line 61 is provided with a sliding rail 62 extending from top to bottom. The side of the charging pile 10 is provided with a protruding single-stage current collector 11, and the upper part of the sliding rail 62 is provided with a guide port 621 for the single-stage current collector 11 to slide into. When the charging pile 10 reaches the charging pile placement position 50 and moves downward, the single-stage current collector 11 slides into the sliding rail 62 through the guide port 621 to achieve electrical connection with the power sliding contact line 61, so as to connect the external power source 80.

[0035] like Figure 6-7As shown, in order to limit the position of the charging pile 10 placed in the charging pile placement position 50, ensure its reliable connection with the external power source 80, and improve charging safety, the charging pile placement position 50 is hinged with a gravity self-locking device. The gravity self-locking device includes a first locking plate 511 and a second locking plate 512 that are vertically fixed together, and the locking end angle formed by the first locking plate 511 and the second locking plate 512 is adapted to the end angle of the charging pile 10; a hinge shaft 513 is provided at the connection position of the first locking plate 511 and the second locking plate 512, and the weight of the second locking plate 512 is greater than the weight of the first locking plate 511; the gravity self-locking device 51 can reach the locking position under the action of the gravity of the charging pile 10 with the hinge shaft 513 as the fulcrum. When in the locked position, the first locking plate 511 extends horizontally, and the bottom wall of the charging pile 10 is supported on the first locking plate 511. The second locking plate 512 extends vertically and abuts against the side wall of the charging pile 10. When the charging pile 10 leaves the gravity self-locking device 51, the gravity self-locking device 51 can reach the release position under its own gravity with the hinge shaft 513 as the fulcrum. When the gravity self-locking device 51 is in the release position, the first locking plate 511 is offset horizontally and extends upward at an angle with the hinge shaft 513 as the starting point. The second locking plate 512 is offset vertically and extends outward at an angle with the hinge shaft 513 as the starting point. The offset angle of the first locking plate 511 in the horizontal direction and the offset angle of the second locking plate 512 in the vertical direction are the same, both being acute angles.

[0036] In this embodiment, to facilitate the charging pile 10 entering the charging pile placement position 50 and to ensure that the gravity self-locking device 51 accurately reaches the locking and releasing positions, the first locking plate 511 has a horizontal offset angle of 45 degrees and the second locking plate 512 has a vertical offset angle of 45 degrees. When the charging pile 10 enters the charging pile placement position 50 from the side opening, the height of its bottom wall is H. When the gravity self-locking device 51 is in the releasing position, the height of the end of its first locking plate 511 is h, where H > h. After the charging pile 10 reaches the charging pile placement position 50, as the lifting arm 42 of the robot 40 lowers, the bottom wall of the charging pile 10 touches the first locking piece 511 of the gravity self-locking device 51. Under the gravity of the charging pile 10, the gravity self-locking device 51 rotates clockwise around the hinge shaft 513 to the locking position, limiting the charging pile 10 to ensure its reliable connection with the external power supply 80. After charging is completed, as the lifting arm 42 of the robot 40 rises, the bottom wall of the charging pile 10 is lifted away from the first locking piece 511 of the self-locking device. Under its own gravity, the gravity self-locking device 51 rotates counterclockwise around the hinge shaft 513 to the release position, facilitating the charging pile 10 to leave the charging pile placement position 50.

[0037] like Figure 8-13As shown, the charging pile 10 is equipped with a cable reel, which includes a housing 71. The housing 71 is made of high-strength, low-weight carbon fiber plate, and a digital display module 76 is also provided on the housing 71. A cable reel 72 is rotatably mounted inside the housing 71, and a charging cable 73 is wound around the cable reel 72. The drive system 75 controls the rotation of the cable reel 72. One end of the charging cable 73 is a power input terminal 731, and the other end is a charging terminal 732. The power input terminal 731 extends out from the first outlet hole of the housing 71 and is electrically connected to the single-stage current collector 11 through the electrical control unit. The charging terminal 732 passes through the second outlet hole of the housing 71 and is electrically connected to the charging gun head 733. Both the charging terminal 732 and the charging gun head 733 are located inside the charging pile 10. The bottom wall of the charging pile 10 has an opening for the charging gun head 733 to extend out. The housing 71 of the cable reel is also equipped with a pair of counters 77 for counting the cable length. The counters 77 are driven to count by a linkage shaft 74. The linkage shaft 74 is located near the second outlet hole. When the charging cable 73 is extended out and retracted, it drives the linkage shaft 74 to rotate. With the cooperation of the counter 77 of the drive system 75, the charging cable 73 can be automatically retracted and extended, and the charging cable 73 can be completely stored in the housing 71 to ensure the environmental safety and cleanliness of the entire charging station.

[0038] The cable reel 72 includes a first reel body 721, a second reel body 722, and a winding shaft 723 connected between the two reels. The first reel body 721, the second reel body 722, and the winding shaft 723 are coaxially arranged. The charging cable 73 is wound on the winding shaft 723 and located between the first reel body 721 and the second reel body 722. The first reel body 721, the second reel body 722, and the winding shaft 723 are all made of carbon fiber plate, and the first reel body 721 and the second reel body 722 have multiple hollow areas 724 evenly distributed along the circumference to reduce the weight of the entire cable. The weight of the disc; the first disc body 721 has a first shaft hole 7211 in the center, which is driven and connected to the drive shaft of the motor 751. In order to improve the fit between the disc body and the drive shaft of the motor 751 and avoid circumferential relative displacement between the two, the first shaft hole 7211 is semi-circular; the second disc body 722 has a second shaft hole 7221 in the center. The second shaft hole 7221 is circular and corresponds to the position of the first wire outlet hole. The first wire outlet hole and the second shaft hole 7221 are equipped with anti-winding carbon brush slip rings 78 to prevent the charging cable 73 from winding and ensure smooth wire feeding and winding.

[0039] The first cable outlet hole is located on the side wall of the housing 71, and the second cable outlet hole is located on the lower wall of the housing 71. The linkage shaft 74 is rotatably disposed below the cable reel 72 and parallel to the winding shaft 723. The linkage shaft 74 has a first mating section and a second mating section. The first mating section is located on the cable outlet and take-up paths of the charging cable 73 and engages with the charging cable 73. The second mating section is located below the counter 77 and engages with the drive disk of the counter 77. During the take-up and take-up process, the charging cable 73 contacts the first mating section and drives the linkage shaft 74 to rotate. The second mating section of the linkage shaft 74 contacts the drive disk of the counter 77 to count the cable outlet and take-up lengths and feed the results back to the drive system 75, thereby achieving automatic take-up and take-up. The diameter of the second cable outlet hole matches the diameter of the charging cable 73 to guide the cable's entry and exit directions and ensure the reliability of the engagement between the first mating section and the linkage shaft 74, so as to drive the linkage shaft 74 to rotate during cable outlet and take-up to achieve counting.

[0040] The drive system 75 includes a motor 751, a power input 754, a forward and reverse speed control module 752, and a gravity sensor 753. The forward and reverse speed control module 752 receives an external signal to connect the forward or reverse rotation circuit of the motor 751. When the charging cable 73 is pulled by hand, the gravity sensor 753 connects the forward rotation circuit of the motor 751. To adapt to different vehicle models and locations, the charging cable 73 has two stages for cable feeding: automatic and manual. The automatic feeding length can be set via the digital display module 76. First, after receiving an external signal, the forward / reverse speed control module controls the motor 751 to connect the forward rotation circuit. The motor 751 drives the cable reel 72 to rotate forward for feeding. The external signal is sent via a button or remote control. During feeding, the charging cable 73 drives the linkage shaft 74 to rotate, and the counter 77 counts the feeding length. Once the preset length is reached, the digital display module 76 outputs a signal, and the forward / reverse speed control module 752 receives the signal to disconnect the forward rotation circuit of the motor 751, stopping the motor 751. Then, by manually pulling the charging cable 73, the gravity sensor 753 is activated, connecting the forward rotation circuit of the motor 751 to continue feeding, and the counter 77... The counting continues until the desired length of the unloaded cable is reached. Then, pulling the charging cable 73 stops, the gravity sensor 753 stops working, the motor 751 stops working, the unloading is complete, and the counter 77 stops counting. During the rewinding process, the forward / reverse speed control module receives an external signal and controls the motor 751 to connect the reverse circuit. The motor 751 drives the cable reel 72 to automatically rewind the cable. During rewinding, the charging cable 73 drives the linkage shaft 74 to rotate in the opposite direction. The linkage shaft 74 drives the counter 77 to rotate in the opposite direction to count the length. When rewinding is complete, the counter 77 counts to zero. When the length count reaches zero, the digital display module 76 outputs a signal, the forward / reverse speed control module disconnects the reverse circuit, the motor 751 stops working, the rewinding is complete, and the counter 77 stops counting. A complete unloading and rewinding process ends.

[0041] The system operates as follows: a location map is created in the software backend based on the parking lot location and embedded into robot 40. Charging pile 10 communicates wirelessly with robot 40 and the backend via 5G. After scanning the charging QR code, the user enters the charging system, selects the parking space to be charged on the backend map, and clicks confirm. After receiving the user's request signal, the robot 40 travels along the pile-retrieving track 3230 to directly below the pile-retrieving position 21 of the conveyor belt 20. The lifting arm 42 is raised, and the lifting arm 42 and the pallet 41 enter through the bottom compartment of the pile-retrieving position 21 to lift the charging pile 10. Then, the charging pile 10 is taken out from the side compartment and sent along the main track 3130 and the pile-laying track 3330 to the charging pile placement position 50 above the user's requested parking space. The charging pile 10 first enters the charging pile placement position 50 from the side compartment of the charging placement position at a higher height. Then, the robot 40 lowers the lifting arm 42 to place the charging pile 10 on the charging pile placement position above the parking space. During the placement process, the single-stage current collector 11 on the charging pile 10 slides into the sliding contact rail 62 and connects to the power sliding contact line 61, so that the charging pile 10 is connected to the external power supply 80. At the same time, the gravity self-locking device will keep the power contact of the charging pile 10 good. While the intelligent robot 40 transports the charging pile 10 to the charging parking space, the conveyor belt delivers the next charging pile 10 to the pickup position 21. The charging pile 10 automatically lowers the charging cable 73 to charge the user. After the user plugs the charging gun 733 into the vehicle, the charging pile 10 sends a start charging and start billing signal to the backend software. Once charging is complete, the user unplugs the charging gun 733, and the charging pile 10 receives the charging completion signal and automatically retracts the cable. Simultaneously, it sends the charging amount back to the backend software for actual billing. After the charging cable 73 is fully retracted, the charging pile 10 sends a signal to the robot 40 that it can be returned to the conveyor belt. Upon receiving the signal, the robot 40 transports the charging pile 10 back to the conveyor belt. During the return journey, the conveyor belt vacates the charging pile position 21, awaiting the arrival of charging piles from the robot 40. The entire charging process is completed once the robot 40 returns the charging pile 10 to the conveyor belt. This system uses a conveyor belt to store non-charging charging piles 10 and controls the number of charging piles transported by the robot 40 to achieve peak-hour power consumption. This system can be upgraded to eliminate the need for a conveyor belt, placing a small number of charging piles 10 directly on the charging pile placement positions 50 above the parking spaces. When a user needs charging, the intelligent robot 40 determines which parking spaces have charging piles 10 and, after calculation, transports the nearest charging pile 10 to the parking space requiring charging. After charging, the charging pile 10 retracts its charging cable and remains in that position, waiting for the robot 40 to transport it again when there is a charging need.

[0042] It should be understood that in the claims and description of this invention, all instances of "comprising..." should be understood as having an open-ended meaning, that is, equivalent to "at least comprising...", and should not be understood as having a closed-ended meaning, that is, should not be understood as "only comprising...". The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0043] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should be covered within the scope of protection of the invention.

Claims

1. A mobile shared charging station system, characterized in that, The system includes a conveyor belt mounted on the top of the parking lot, a robot, and a track for the robot to travel on. The conveyor belt and track are arranged in layers on different planes, with the conveyor belt plane being higher than the track plane. Each parking space has a charging pile placement position above it. The conveyor belt has a pile retrieval position at its end, allowing it to sequentially transport multiple charging piles to the retrieval position. Each charging pile contains a cable reel. The track includes a main track, a pile retrieval track connected to the main track, and multiple pile placement tracks. At least one section of the pile retrieval track is located directly below the pile retrieval position. The multiple pile placement tracks are connected in parallel to the side of the main track, and each pile placement track corresponds to a charging pile placement position. At least one section of the pile placement track is located directly below its corresponding charging pile placement position. Below; the robot's bottom is equipped with steering wheels capable of turning, and the top of the robot is equipped with a pile picking and placing mechanism; the charging pile placement position is hinged with a gravity self-locking device, which includes a first locking plate and a second locking plate that are vertically fixed, and the locking end angle formed by the first locking plate and the second locking plate is adapted to the end angle of the charging pile. The connection position between the first locking plate and the second locking plate is provided with a hinge shaft, and the weight of the second locking plate is greater than the weight of the first locking plate; the gravity self-locking device can reach the locking position with the hinge shaft as the fulcrum under the action of the weight of the charging pile. When the gravity self-locking device is in the locking position, the first locking plate extends horizontally, the bottom wall of the charging pile is supported on the first locking plate, and the second locking plate extends vertically and abuts against the side wall of the charging pile; When the charging pile leaves the gravity self-locking device, the gravity self-locking device can reach the release position with the hinge shaft as the fulcrum under its own gravity. When the gravity self-locking device is in the release position, the first locking plate is offset horizontally and extends upward at an angle with the hinge shaft as the starting point. The second locking plate is offset vertically and extends outward at an angle with the hinge shaft as the starting point. The offset angle of the first locking plate in the horizontal direction and the offset angle of the second locking plate in the vertical direction are the same, both being acute angles.

2. The mobile shared charging pile system according to claim 1, characterized in that, The pile retrieval and placement mechanism includes a lifting arm and a support plate for supporting the charging pile. The support plate is fixed above the lifting arm, which can rise and fall under the drive of the driving component. The sides of the pile retrieval position and the charging pile placement position are provided with side openings for the charging pile to enter and exit. The bottom of the pile retrieval position and the charging pile placement position are provided with bottom openings for the lifting arm and the support plate to enter and exit, and the bottom openings are smaller than the bottom wall of the charging pile.

3. The mobile shared charging pile system according to claim 2, characterized in that, The pile-taking track is vertically connected to the starting end of the main track, and the pile-laying track is vertically connected to the side of the main track at intervals. The robot's steering wheels can turn 90 degrees under the action of driving force.

4. The mobile shared charging pile system according to claim 1, characterized in that, The horizontal offset angle of the first locking plate and the vertical offset angle of the second locking plate are 10 degrees to 60 degrees; when the charging pile enters the charging pile placement position from the side compartment, the height of its bottom wall is H; when the gravity self-locking device is in the release position, the height of the end of its first locking plate is h, where H > h.

5. The mobile shared charging pile system according to claim 1, characterized in that, Above each of the charging pile locations is a power distribution box connected to an external power source. The power distribution box has a downward-extending power sliding contact line, and the lower end of the power sliding contact line has a sliding rail extending from top to bottom. The charging pile has a protruding single-stage current collector, and the upper part of the sliding rail has a guide opening for the single-stage current collector to slide into.

6. The mobile shared charging pile system according to claim 1, characterized in that, The cable reel includes a housing, within which a cable reel is rotatably mounted. The charging cable is wound around the cable reel, and a drive system controls the rotation of the cable reel. One end of the charging cable is a power input end, and the other end is a charging end. The power input end extends from the first outlet hole of the housing and is electrically connected to a single-stage current collector through an electrical control unit. The charging end passes through the second outlet hole of the housing and is electrically connected to a charging gun head. The housing also contains a pair of counters for counting the cable length. The counters are driven by a linkage shaft located near the second outlet hole. The linkage shaft rotates when the charging cable is extended or retracted.

7. The mobile shared charging pile system according to claim 6, characterized in that, The cable reel includes a first reel body, a second reel body, and a winding shaft connected between the two reels body. The first reel body, the second reel body, and the winding shaft are coaxially arranged. The charging cable is wound on the winding shaft and located between the first and second reels body. The first cable outlet hole is opened on the side wall of the housing, and the second cable outlet hole is opened on the lower wall of the housing. The linkage shaft is rotatably arranged below the cable reel body and parallel to the winding shaft. The linkage shaft has a first mating section and a second mating section. The first mating section is located on the cable outlet path and the cable reel take-up path and makes contact with the charging cable. The second mating section is located below the counter and makes contact with the counter's drive plate.

8. The mobile shared charging pile system according to claim 7, characterized in that, The drive system includes a motor, a forward and reverse speed control module, and a gravity sensor. The forward and reverse speed control module receives external signals to connect the motor's forward rotation circuit or reverse rotation circuit. The gravity sensor connects the motor's forward rotation circuit when the charging cable is pulled by hand.

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