Battery box delivery vehicle charging system

Abstract

The present invention relates to a battery box delivery vehicle charging system, including a battery box delivery vehicle and a charging station; a power receiving box is provided on the body of the battery box delivery vehicle, and a plurality of power receiving interfaces are provided on the top of the power receiving box, each of which is connected to each battery box seat through a cable and keeps the circuit conductive with the battery box; the charging station includes a charging unit and a charging rack; a charging rack is provided on the side of the charging unit; the battery box delivery vehicle can be parked in the charging rack; a charging mobile platform is provided below the top of the charging rack; a charging hanger is fixed at the bottom of the charging mobile platform, and a plurality of charging plugs are provided in the charging hanger, and the charging plugs are connected to the charging unit through cables; each of the charging plugs cooperates with each power receiving interface; the charging plug can be plugged into the power receiving interface on the top of the power receiving box from above. The present invention can perform efficient, safe and reliable charging.

Description

Technical Field

[0001] The invention relates to a battery box delivery vehicle for mobile battery replacement of electric trucks and a system for charging the vehicle without unloading the vehicle, belonging to the technical field of new energy vehicles. Background Art

[0002] Electric trucks are currently widely used in industrial and mining areas, docks and other places. Electric trucks are different from ordinary household motor vehicles. In order to improve the efficiency of truck use, they generally adopt a battery replacement mode to quickly replace the battery pack of the truck so that the truck can be put into use again.

[0003] In response to some special battery replacement needs of electric trucks, mobile battery replacement equipment has been developed. Multiple battery boxes are loaded on a transport and distribution vehicle (generally a flatbed truck or an open box truck) and transported to a centralized use site for electric trucks. On-site battery replacement is performed through a special battery replacement mechanism. For related facilities and equipment, please refer to the Chinese patent publication number CN113997851A, a battery distribution vehicle, and a battery replacement station and battery replacement method thereof, and the Chinese patent publication number CN114013332A, a mobile truck battery replacement device, and the Chinese patent publication number CN113895300A, a mobile two-way battery replacement station and battery replacement method thereof, and the Chinese patent publication number CN113829944A, a vehicle-mounted mobile battery replacement station and battery replacement method thereof, and the Chinese patent publication number CN113815477A, ​​a mobile battery replacement system and battery replacement method thereof, and the Chinese patent publication number CN113815476A. In this type of solution, a battery box delivery vehicle is used. When the fully charged battery boxes on the delivery vehicle are replaced on the electric truck with battery boxes that are all waiting to be charged, the delivery vehicle needs to drive back to the charging base to charge the battery boxes. In order to avoid the loading and unloading procedures of the battery boxes, it is preferred to keep the battery boxes on the delivery vehicle for charging.

[0004] In some plans, an electric control room is set up on the delivery vehicle taking such charging scenarios into consideration; but since the battery capacity of the battery box used in electric trucks is very large, the power required to charge multiple battery boxes at the same time is extremely large. If only the main cable is connected to supply industrial electricity directly to the electric control room, and then the electric control room rectifies and transforms the electricity to charge the battery box, the heat generated by the electric control room will be extremely large. In order to avoid accidents, the electric control room needs to be built larger, thus occupying the payload space of the delivery vehicle.

[0005] Therefore, it is necessary to study the charging system of the battery box delivery vehicle for electric truck battery replacement to overcome many inconveniences and meet the needs of efficient and safe charging. Summary of the invention

[0006] The object of the present invention is to provide a battery box delivery vehicle charging system, so as to efficiently, safely and reliably charge the battery box delivery vehicle used for battery replacement of electric trucks.

[0007] In order to achieve the above-mentioned invention object, the present invention provides a battery box delivery vehicle charging system, including a battery box delivery vehicle and a charging station;

[0008] The battery box delivery vehicle is provided with a plurality of battery box seats, on which battery boxes to be charged are placed; the battery boxes are connected to the battery box seats via interfaces;

[0009] The battery box delivery vehicle is also provided with a power receiving box on its body, and a plurality of power receiving interfaces are provided on the top of the power receiving box, each of which is connected to each battery box seat through a cable and keeps the circuit connected with the battery box;

[0010] The charging station includes a charging unit and a charging rack;

[0011] The charging unit is connected to the power grid, and a charging rack is provided beside the charging unit; the battery box delivery vehicle can be parked in the charging rack;

[0012] A charging mobile platform is provided below the top of the charging rack, and the charging mobile platform is a three-axis orthogonal mobile platform;

[0013] A charging hanger is fixed below the z-axis lifting platform at the bottom of the charging mobile platform, and a plurality of charging plugs are arranged in the charging hanger, and the charging plugs are connected to the charging unit through cables;

[0014] Each of the charging plugs matches each power receiving interface; the charging plug can be plugged into the power receiving interface on the top of the power receiving box from above.

[0015] As a further improvement of the present invention, a plurality of independent charging modules are provided in the charging unit, each charging module is connected to each charging plug via an independent cable, and each battery box is charged independently.

[0016] As a further improvement of the present invention, the body of the battery box delivery vehicle is provided with a vehicle-mounted battery for powering the battery box delivery vehicle itself; the vehicle-mounted battery is connected to a group of power receiving interfaces on the power receiving box via a cable.

[0017] As a further improvement of the present invention, the charging frame of the charging station is a gantry frame;

[0018] A charging mobile platform is provided under the top of the gantry;

[0019] The charging mobile platform includes an x-axis mobile platform, a y-axis mobile platform, and a z-axis lifting platform;

[0020] The guide rail of the x-axis mobile platform is fixed on the top crossbeam of the gantry;

[0021] The y-axis moving platform is arranged on the platform of the x-axis moving platform; the guide rail of the y-axis moving platform is fixed on the platform of the x-axis moving platform;

[0022] The z-axis lifting platform is provided below the platform of the y-axis moving platform;

[0023] The z-axis lifting platform comprises a z-axis lifting mechanism, and a lifting platform is provided at the bottom of the z-axis lifting mechanism;

[0024] A charging hanger is provided at the bottom of the lifting platform.

[0025] As a further improvement of the present invention, the x-axis moving platform includes an x-axis guide rail, an x-axis platform, and an x-axis driving mechanism;

[0026] There are 2 sets of x-axis guide rails, which are fixed on the top of the charging rack to form parallel linear guide rails;

[0027] The x-axis platform is horizontally movably installed in the x-axis guide rail;

[0028] An x-axis driving mechanism is provided at one end of the x-axis guide rail;

[0029] The x-axis driving mechanism is a screw-nut linear driving mechanism, including a driving screw and a driving nut;

[0030] One end of the driving screw is connected to the x-axis platform;

[0031] The driving screw is inserted into the driving nut, and the base of the driving nut is fixed on the charging frame;

[0032] The driving screw and the driving nut are provided with two sets, which are respectively located on the charging frame and the two sides of the x-axis platform;

[0033] The drive nuts on the two sides are connected to the same drive element to perform synchronous actions;

[0034] The x-axis driving mechanism includes an x-axis driving motor, an x-axis driving distribution box, and a driving shaft;

[0035] The motor seat of the x-axis driving motor is fixed on the charging frame, and the output end of the x-axis driving motor is connected to the x-axis driving distribution box;

[0036] The x-axis drive distribution box is provided with a gear set to convert the input of the x-axis drive motor into a symmetrical dual-axis output;

[0037] The outputs at both ends of the x-axis drive distribution box are connected to the drive nuts on both sides through drive shafts respectively, so as to synchronously drive the drive nuts.

[0038] As a further improvement of the present invention, the y-axis moving platform includes a y-axis guide rail, a y-axis platform, and a y-axis driving mechanism;

[0039] There are two sets of y-axis guide rails, which are fixed in the platform of the x-axis moving platform to form parallel linear guide rails;

[0040] The y-axis platform is horizontally movably installed in the y-axis guide rail;

[0041] The y-axis platform is provided with a y-axis driving mechanism, which drives the y-axis platform to move horizontally along the y-axis guide rail;

[0042] The y-axis driving mechanism is a gear rack driving mechanism, including a rack, a gear, a gear shaft, a y-axis driving distributor, and a y-axis driving motor;

[0043] The y-axis driving motor is mounted on the y-axis platform;

[0044] The output shaft end of the y-axis drive motor is provided with a y-axis drive distributor, and the y-axis drive distributor distributes the output of the y-axis drive motor into dual-axis outputs, which are respectively connected to gear shafts;

[0045] There are two sets of gear rack drive mechanisms, which are respectively located on both sides of the y-axis platform;

[0046] A gear is provided at the end of the gear shaft; the rack is fixed to the y-axis guide rail and is parallel to the y-axis guide rail;

[0047] The gear is meshed with the rack;

[0048] The y-axis driving motor rotates, driving the gear shafts on two sides to rotate, thereby driving the gears to rotate, meshing with the racks, and driving the y-axis platform to perform translational motion.

[0049] As a further improvement of the present invention, the z-axis lifting platform includes a z-axis lifting mechanism, a z-axis driving mechanism, and a z-axis driving motor;

[0050] The z-axis lifting mechanism is a scissor mechanism with a lifting platform at the bottom;

[0051] A z-axis driving mechanism is provided between the lifting platform and the platform of the y-axis moving platform;

[0052] The z-axis driving mechanism is a bite chain type linear motion mechanism, which provides lifting power and downward pressure for the lifting platform.

[0053] As a further improvement of the present invention, a charging plug board is provided in the charging hanger;

[0054] The charging plug board is provided with a plurality of independent charging plugs;

[0055] The charging plug board is arranged in the hanger frame;

[0056] A plurality of charging plug board lifting drive elements are arranged in the hanger frame, and the bottom of the extended drive rod of the charging plug board lifting drive element is fixed to the charging plug board;

[0057] The charging plug board lifting drive element drives the charging plug board to move up and down within the hanger frame;

[0058] The bottom of the charging plug arranged on the charging plug board is driven by the charging plug board lifting drive element to exceed the bottom of the sling frame or be completely located in the sling frame.

[0059] As a further improvement of the present invention, the top of the power receiving box is provided with an openable and closable rainproof cover;

[0060] The rainproof cover is a split-type structure, and is opened and closed by a cover driving mechanism;

[0061] The rainproof cover is installed on the box body through a cover driving mechanism;

[0062] The housing driving mechanism is a parallelogram driving mechanism, comprising two swing arms, namely a follower swing arm and a driving swing arm;

[0063] The upper and lower ends of the follower swing arm and the driving swing arm are respectively hinged to the end of the rain cover shell and the side of the box body to form a parallelogram mechanism;

[0064] A driving part is extended from the bottom of the driving swing arm and connected to the opening and closing driving element;

[0065] The opening and closing driving element is a linear driving element, the extension rod of which is hinged to the driving part of the driving swing arm, and the fixing rod of which is hinged to the side of the box body;

[0066] The linear telescopic movement of the opening and closing drive element drives the drive swing arm to swing, thereby driving the rainproof cover shell to move inward to shield the power receiving interface area, or drives the rainproof cover shell to move outward to expose the power receiving interface area.

[0067] Furthermore, a sealing strip is provided at the closed portion of the rainproof cover shell for sealing.

[0068] Furthermore, a wind knife is provided in at least one side of the rain cover shell along the closing direction of the top of the rain cover shell;

[0069] The air knife is connected to the compressed air source of the battery box delivery vehicle.

[0070] As a further improvement of the present invention, more than two guide locking columns are provided around the top of the power receiving box;

[0071] A guide lock sleeve assembly matching the guide lock column is provided below the charging hanger;

[0072] The lower part of the guide lock column is a cylindrical guide column, and the upper part of the cylindrical guide column is a guide cone;

[0073] An elliptical head is provided above the guide column, and a guiding arc surface is formed on the top of the elliptical head;

[0074] The elliptical head and the guide column are connected via a thinner connecting column;

[0075] The vertical projection shape of the elliptical head is completely contained within the cross-sectional shape of the guide post;

[0076] The vertical projection shape of the connecting column is completely contained within the vertical projection shape of the elliptical head;

[0077] The guide lock sleeve assembly includes a guide lock sleeve, a rotating mechanism, a mounting plate, and a rotating drive motor;

[0078] The guide locking sleeve is installed on the bottom of the mounting plate through the rotating mechanism;

[0079] The mounting plate is provided with the rotary drive motor, and the output shaft of the rotary drive motor is connected to the rotary mechanism or the guide lock sleeve; the rotary drive motor drives the guide lock sleeve to rotate relative to the mounting plate;

[0080] Below the guide locking sleeve is a cylindrical guide cylinder, the cross-sectional shape of which matches that of the guide column;

[0081] A flange is provided on the upper portion of the guide cylinder, and the flange is mounted on the rotating mechanism;

[0082] An elliptical locking hole is provided in the middle of the flange, and its cross-sectional shape matches the elliptical head;

[0083] When the guide lock sleeve assembly is sleeved onto the guide lock column, the guide column is inserted into the guide cylinder; the elliptical head passes through the elliptical lock hole in the middle of the flange, and the elliptical head is located above the flange; the connecting column is at the height position of the lock hole.

[0084] When the battery box delivery vehicle charging system of the present invention is used, the battery box delivery vehicle drives into the charging station with the battery box to be charged, and parks the receiving box as directly below the charging hanger of the charging rack as possible; the rainproof cover on the receiving box is opened to expose the power receiving interface, and the vehicle is turned off and parked to wait for charging.

[0085] At this time, the charging seat is opened, the system identifies, or the operator identifies the position of the charging hanger relative to the power box, and adjusts the x-axis mobile platform and the y-axis mobile platform of the charging mobile platform so that the charging hanger is just above the power box, and then starts the z-axis lifting platform to drop the charging hanger; during the process, the guide lock sleeve at the bottom of the charging hanger contacts the guide lock column on the power box to position and guide the charging hanger; finally, the charging hanger completely falls on the top of the power box, and the guide lock column is completely inserted into the guide lock sleeve, and the rotation drive motor of the guide lock sleeve assembly is started to fix the charging hanger on the power box; then the charging plug board lifting drive element is started, and the charging plug in the charging hanger is lowered at the same time as the charging plug board, and plugged into the power receiving interface on the power box; after the charging line is connected, the charging unit is started, and each battery box is independently tested and charged.

[0086] The battery box delivery vehicle charging system of the present invention is designed for battery box delivery vehicles, and a special power receiving box is provided, in which only non-power electronic devices such as connectors, circuit breakers, and connecting cables are installed. The size can be made relatively small, thereby saving vehicle space to accommodate more battery boxes for battery replacement in electric trucks; and a special battery replacement station is set up, through the provision of a charging mobile platform and a charging hoist, remote operation or automated charging docking process can be achieved, eliminating manual operation.

[0087] At the same time, the structural design of the charging hanger is optimized to improve the reliability and safety of the docking process.

[0088] The battery box delivery vehicle charging system of the present invention can meet the demand for centralized, efficient, safe and reliable charging of battery box delivery vehicles used for battery replacement of electric trucks. BRIEF DESCRIPTION OF THE DRAWINGS

[0089] Figure 1 It is an overall schematic diagram of the use status of the battery box delivery vehicle charging system of the present invention;

[0090] Figure 2 A side view of the battery box delivery vehicle charging system of the present invention in use;

[0091] Figure 3 A rear view of the battery box delivery vehicle charging system of the present invention in use;

[0092] Figure 4 It is a partially enlarged schematic diagram of the use status of the charging system of the battery box delivery vehicle of the present invention;

[0093] Figure 5 It is a schematic diagram of the overall structure of the mobile charging platform of the present invention;

[0094] Figure 6 It is an overall side view of the charging mobile platform of the present invention;

[0095] Figure 7 It is an overall top view of the charging mobile platform of the present invention;

[0096] Figure 8 It is a front cross-sectional view of the y-axis moving platform of the present invention;

[0097] Fig. 9 It is a partially enlarged schematic diagram of the y-axis moving platform of the present invention;

[0098] Fig.10 It is a schematic diagram of the overall structure of the charging hanger of the present invention;

[0099] Fig.11 It is a side view of the charging hanger of the present invention;

[0100] Fig.12 It is a schematic diagram of the overall structure of the power receiving box of the present invention;

[0101] Fig.13 A side view of the rainproof cover of the power receiving box of the present invention in an open state;

[0102] Fig.14 A side view of the rainproof cover of the power receiving box of the present invention in a closed state;

[0103] Fig.15 It is a schematic diagram of the overall structure of the guide lock sleeve assembly of the present invention;

[0104] Fig.16 It is a schematic diagram of the docking of the guide lock sleeve and the guide lock column of the present invention;

[0105] Fig.17 It is a cross-sectional view of the docking of the guide lock sleeve and the guide lock column of the present invention. DETAILED DESCRIPTION

[0106] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0107] like Figure 1-Figure 4 As shown, it is a schematic diagram of the use state of the battery box delivery vehicle charging system of the present invention. A plurality of battery box seats 12 are provided on the body 11 of the battery box delivery vehicle 1. Battery boxes 13 to be charged are placed on the battery box seats 12. At most, one battery box 13 to be charged is provided on each battery box seat 12. The battery box seats 12 and the battery boxes 13 are connected via an interface; the battery box seats 12 are provided with a power receiving interface.

[0108] A power receiving box 2 is also provided on the body 11 of the battery box delivery vehicle 1 and is connected to each battery box seat 12 via cables.

[0109] On the body 11 of the battery box delivery vehicle 1, there is also a vehicle-mounted battery 14 for supplying power to the battery box delivery vehicle 1 itself, which can also be connected to the power receiving box 2 via a cable.

[0110] When the battery box 13 needs to be charged, the battery box delivery vehicle 1 drives into the charging station, which is equipped with a fixed charging unit 31 to transform and rectify the input industrial AC power and then output it;

[0111] A charging gantry 32 is provided beside the charging unit 31 of the charging station, and the battery box delivery vehicle 1 can directly drive into the charging gantry 32;

[0112] The charging gantry 32 is provided with a charging plug board, which is connected to the output port of the charging unit 31 through a cable 33; in particular, for each battery box 13 to be charged (including the vehicle battery 14), the charging unit 31 can provide an independent charging circuit, and is connected to the charging plug on the charging plug board through an independent cable 33;

[0113] When the battery box delivery vehicle 1 is parked in place, the charging plug board is controlled to be connected to the power receiving interface of the power receiving box 2, and the charging unit 31 is started to charge the battery box 13.

[0114] The charging plug board and the power receiving interface of the power receiving box 2 can be arranged on the left and right side facades of the charging gantry 32 for connection; but in order to improve the connection reliability, preferably, the charging plug board and the power receiving interface of the power receiving box 2 are arranged below the top of the charging gantry 32, that is, the charging plug board is installed below the top beam of the charging gantry 32 through the charging mobile platform 4, and the power receiving interface is installed on the top of the power receiving box 2; when the battery box delivery vehicle 1 is roughly parked in place, the system identifies the position of the power receiving box 2, and then the charging plug board is moved to the top of the power receiving box 2 through the charging mobile platform 4, and then the charging plug board is driven downward to connect with the power receiving interface.

[0115] like Figure 5-Figure 7 , which is a schematic diagram of the charging mobile platform 4 of the present invention, which is a three-axis orthogonal mobile platform, that is, an XYZ axis mobile platform; specifically, it includes an x-axis mobile platform, a y-axis mobile platform, and a z-axis lifting platform;

[0116] Among them, the x-axis moving platform includes an x-axis guide rail 41, an x-axis platform 42, and an x-axis driving mechanism; the x-axis guide rail 41 is provided with 2 groups, which are respectively fixed on the top of the charging gantry 32 to form parallel linear guide rails; the x-axis platform 42 is horizontally movably installed in the x-axis guide rail 41; an x-axis driving mechanism is provided at one end of the x-axis guide rail 41; the x-axis driving mechanism is a screw nut linear driving mechanism, including a driving screw 431 and a driving nut 432; one end of the driving screw 431 is connected to the x-axis platform 42; the driving screw 431 is inserted into the driving nut 432, and the base of the driving nut 432 is fixed on the charging gantry 32; preferably, the driving screw 431 and the driving nut 432 are provided with 2 sets , respectively located on both sides of the charging gantry 32 and the x-axis platform 42; the driving nuts 432 on the two sides are connected to the same driving element for synchronous action; the x-axis driving mechanism includes an x-axis driving motor 435, an x-axis driving distribution box 434, and a driving shaft 433; the motor seat of the x-axis driving motor 435 is fixed on the charging gantry 32, and the output end of the x-axis driving motor 435 is connected to the x-axis driving distribution box 434, and a gear set is provided in the x-axis driving distribution box 434, which converts the input of the x-axis driving motor 435 into a symmetrical dual-axis output, and the outputs at both ends of the x-axis driving distribution box 434 are connected to the driving nut 432 through the driving shaft 433, so as to synchronously drive the driving nut 432.

[0117] The y-axis mobile platform is arranged on the x-axis platform 42, and the y-axis mobile platform includes a y-axis guide rail 44, a y-axis platform 45, and a y-axis driving mechanism 46; the y-axis guide rail 44 is provided with two groups, which are respectively fixed in the x-axis platform 42 to form parallel linear guide rails; the y-axis platform 45 is horizontally movably installed in the y-axis guide rail 44; the y-axis platform 45 is provided with a y-axis driving mechanism 46 to drive the y-axis platform 45 to move horizontally along the y-axis guide rail 44.

[0118] like Figure 8 , Fig. 9 As shown, a plurality of pulleys 451 are provided on both sides of the y-axis platform 45 , and the pulleys 451 are installed in the y-axis guide rail 44 for guiding movement.

[0119] The y-axis driving mechanism 46 is a gear rack driving mechanism, including a rack 461, a gear 462, a gear shaft 463, a y-axis driving distributor 464, and a y-axis driving motor 465; the y-axis driving motor 465 is installed on the y-axis platform 45; the output shaft of the y-axis driving motor 465 is connected to the gear shaft 463; preferably, the output shaft end of the y-axis driving motor 465 is provided with a y-axis driving distributor 464, and the y-axis driving distributor 464 is the same as the x-axis driving distribution box 434, which distributes the output of the y-axis driving motor 465 into two axes The output is connected to the gear shaft 463 respectively, so the corresponding gear rack drive mechanism is provided with 2 sets, which are respectively located on both sides of the y-axis platform 45; a gear 462 is provided at the end of the gear shaft 463; the rack 461 is fixed together with the y-axis guide rail 44 and is parallel to the y-axis guide rail 44; the gear 462 is meshed with the rack 461; the y-axis driving motor 465 rotates, driving the gear shafts 463 on both sides to rotate, and then driving the gear 462 to rotate, meshing the rack 461, and driving the y-axis platform 45 to perform translational motion.

[0120] The z-axis lifting platform is arranged below the y-axis platform 45, and the z-axis lifting platform includes a z-axis lifting mechanism 47, a z-axis driving mechanism 48, and a z-axis driving motor 49; the z-axis lifting mechanism 47 is a scissors-type mechanism, and a lifting platform is provided at the bottom; a z-axis driving mechanism 48 is also provided between the lifting platform and the y-axis platform 45, and the z-axis driving mechanism 48 is an interlocking chain-type linear motion mechanism, which provides lifting power and downward pressure for the lifting platform.

[0121] At the bottom of the charging mobile platform 4, that is, below the lifting platform, a charging hanger 5 is fixed. Fig.10 As shown, the charging hanger 5 is provided with a charging plug board 51; the charging plug board 51 is provided with a plurality of independent charging plugs 52, and is connected to an independent charging cable 33; the charging plug board 51 is arranged in a hanger frame 53; the hanger frame 53 is provided with a plurality of charging plug board lifting drive elements 54, and the charging plug board lifting drive element 54 is a cylinder, and the bottom of the piston rod thereof is fixed to the charging plug board 51.

[0122] When the charging plug board lifting driving element 54 moves downward, the charging plug board 51 is pushed downward, especially the charging plug 52 on the charging plug board 51 is pushed beyond the bottom of the hanger frame 53, so as to be conveniently connected to the power receiving interface on the power receiving box 2. Fig.11 shown.

[0123] When the charging plug board lifting drive element 54 moves upward, the charging plug board 51 is pushed upward, especially the charging plug 52 on the charging plug board 51 is stored in the hanger frame 53, so as to protect the charging plug 52 and prevent it from being damaged by external force.

[0124] like Fig.12 As shown, the power receiving box 2 includes a box body 21, which is provided with non-power electronic devices such as connectors and circuit breaker protection; a plurality of power receiving interfaces 22 are provided on the top of the box body 21, which match the charging plug 52 to achieve circuit conduction; further, near the power receiving interface 22, especially around the top of the box body 21, a guide lock column 23 is provided to guide the docking process of the power receiving interface 22 and the charging plug 52, and to lock the charging process after the circuit is conducted; since the power receiving box 2 is installed on the battery box delivery vehicle 1, when there is no protective compartment as a whole, the top of the box body 21 is preferably provided with an openable and closable rain cover shell 24;

[0125] In order to reduce the space occupied by opening on one side, the rainproof cover shell 24 adopts a split design and is opened and closed by a cover shell driving mechanism 25; a sealing strip 241 is provided at the closed part of the rainproof cover shell 24 for sealing.

[0126] Further Fig.13 , Fig.14 As shown, the rain cover 24 is installed on the box body 21 through a cover driving mechanism 25; the cover driving mechanism 25 is a parallelogram driving mechanism as a whole, including two swing arms, namely a follower swing arm 251 and a driving swing arm 252; the upper and lower ends of the follower swing arm 251 and the driving swing arm 252 are respectively hinged to the end of the rain cover 24 and the side of the box body 21 to form a parallelogram mechanism; the bottom of the driving swing arm 252 is also extended with a driving part, and is connected to the The opening and closing driving element 253 is connected; the opening and closing driving element 253 is a linear driving cylinder, whose piston rod is hinged to the driving part of the driving swing arm 252, and its cylinder body is hinged to the side of the box body 21. Through the opening and closing of the linear driving cylinder of the opening and closing driving element 253, the driving swing arm 252 is driven to swing, thereby driving the rainproof cover shell 24 to move inward to shield the power receiving interface 22 area, or driving the rainproof cover shell 24 to move outward to expose the power receiving interface 22 area.

[0127] Furthermore, in the rainproof cover shell 24 on at least one side, there is a wind knife 242 arranged along the closing direction of the top of the rainproof cover shell 24, which is connected to the compressed air source of the battery box delivery vehicle 1. When it rains, especially when the rainfall is heavy, the wind knife 242 is started to blow out high-pressure air along the closing direction of the top of the rainproof cover shell 24, so as to blow away the rainwater in the closed part and keep the inside of the rainproof cover shell 24 dry, thereby improving the circuit reliability of the power receiving interface 22 area.

[0128] like Fig.15 As shown, further, matching the guide lock column 23, a guide lock sleeve assembly 55 is also provided below the charging hanger 5; the guide lock sleeve assembly 55 can be provided on the charging plug board 51 as required, or preferably provided on the hanger frame 53. The guide lock sleeve assembly 55 includes a guide lock sleeve 551, a rotating mechanism 552, a mounting plate 553, and a rotating drive motor 554; the guide lock sleeve 551 is installed at the bottom of the mounting plate 553 through the rotating mechanism 552, and the mounting plate 553 is also provided with the rotating drive motor 554, and the output shaft of the rotating drive motor 554 is connected to the rotating mechanism 552 or the guide lock sleeve 551, driving the guide lock sleeve 551 to rotate relative to the mounting plate 553.

[0129] Further Fig.16 , Fig.17 As shown,

[0130] Below the guide lock column 23 is a cylindrical guide column 231, and the upper part of the guide column 232 is a guide cone 232; above the guide column 231 is an elliptical head 234, and the top of the elliptical head 234 forms a guide arc surface 235; the elliptical head 234 is connected to the guide column 231 through a thinner connecting column 233; the vertical projection shape of the elliptical head 234 is completely contained in the cross-sectional shape of the guide column 231; the vertical projection shape of the connecting column 233 is completely contained in the vertical projection shape of the elliptical head 234; the guide lock column 23 is composed of an elliptical head 234, a connecting column 233, and a guide column 231 from top to bottom, and the vertical projection areas are connecting column 233 < elliptical head 234 < guide column 231.

[0131] Below the guide locking sleeve 551 is a cylindrical guide cylinder 5511, whose cross-sectional dimensions match those of the guide column 231; a flange 5512 is provided on the upper portion of the guide cylinder 5511, and the flange is mounted on the rotating mechanism 552; an elliptical locking hole 5513 is provided in the middle of the flange 5512, and its cross-sectional shape matches that of the elliptical head 234.

[0132] The guide lock column 23 is installed on the power receiving box 2, and the guide lock sleeve assembly 55 is installed below the charging hanger 5. Driven by the charging mobile platform 4, the charging hanger 5 first moves horizontally to the top of the power receiving box 2, and then moves downward under the drive of the z-axis lifting platform; the guide lock sleeve assembly 55 at the bottom of the charging hanger 5 first approaches the guide lock column 23 on the power receiving box 2, and the guide cylinder 5511 contacts the top of the guide lock column 23, and is aligned under the guidance of the guide arc surface 235; then it continues to move downward until the guide column 231 partially enters the guide cylinder 5511, and there is a contact cylinder in the vertical direction between the two, so reliable positioning can be formed; when the guide After the guide cylinder 5511 completely falls into place, the elliptical head 234 just passes through the elliptical lock hole 5513 in the middle of the flange 5512, and the connecting column 233 is just at the height of the lock hole 5513; at this time, the rotation drive motor 554 is started to rotate the guide cylinder 5511, and the elliptical lock hole 5513 is deflected relative to the elliptical head 234 to achieve vertical locking; when the guide lock columns 23 at the four corners of the power receiving box 2 are all covered and locked by the guide lock sleeve assembly 55 on the charging hanger 5, it can be ensured that all the charging plugs 52 on the charging plug board 51 in the charging hanger 5 correspond to the power receiving interface 22 on the power receiving box 2. Therefore, the charging plug board lifting drive element 54 is started again to press the charging plug board 51 downward, and the charging plugs 52 are all inserted into the power receiving interface 22 to achieve circuit conduction, and charging can be carried out. When an accident occurs during the charging process, the charging plug board lifting drive element 54 can be immediately started in reverse to instantly lift the charging plug board 51, so that the charging plug 52 is separated from the power receiving box 2, and charging is terminated without waiting for the guide lock sleeve assembly 55 to be unlocked and separated from the guide lock column 23.

[0133] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. Battery box delivery vehicle charging system, characterized in that: Including battery box delivery vehicles and charging stations; The battery box delivery vehicle is provided with a plurality of battery box seats, on which battery boxes to be charged are placed; the battery boxes are connected to the battery box seats via interfaces; The battery box delivery vehicle is also provided with a power receiving box on its body, and a plurality of power receiving interfaces are provided on the top of the power receiving box, each of which is connected to each battery box seat through a cable and keeps the circuit connected with the battery box; The charging station includes a charging unit and a charging rack; The charging unit is connected to the power grid, and a charging rack is provided beside the charging unit; the battery box delivery vehicle can be parked in the charging rack; A charging mobile platform is provided below the top of the charging rack, and the charging mobile platform is a three-axis orthogonal mobile platform; A charging hanger is fixed below the z-axis lifting platform at the bottom of the charging mobile platform, and a plurality of charging plugs are arranged in the charging hanger, and the charging plugs are connected to the charging unit through cables; Each of the charging plugs is matched with each power receiving interface; the charging plug can be plugged into the power receiving interface on the top of the power receiving box from above; The charging hanger is provided with a charging plug board; The charging plug board is provided with a plurality of independent charging plugs; The charging plug board is arranged in the hanger frame; A plurality of charging plug board lifting drive elements are arranged in the hanger frame, and the bottom of the extended drive rod of the charging plug board lifting drive element is fixed to the charging plug board; The charging plug board lifting drive element drives the charging plug board to move up and down within the hanger frame; The bottom of the charging plug arranged on the charging plug board is driven by the charging plug board lifting drive element to exceed the bottom of the sling frame or be completely located in the sling frame.

2. The battery box delivery vehicle charging system according to claim 1, characterized in that: The charging unit is provided with a plurality of independent charging modules, each of which is connected to each of the charging plugs via an independent cable, so as to charge each battery box independently.

3. The battery box delivery vehicle charging system according to claim 1, characterized in that: The body of the battery box delivery vehicle is provided with a vehicle-mounted battery for supplying power to the battery box delivery vehicle itself; the vehicle-mounted battery is connected to a group of power receiving interfaces on the power receiving box via a cable.

4. The battery box delivery vehicle charging system according to claim 1, characterized in that: The charging frame of the charging station is a gantry frame; A charging mobile platform is provided under the top of the gantry; The charging mobile platform includes an x-axis mobile platform, a y-axis mobile platform, and a z-axis lifting platform; The guide rail of the x-axis mobile platform is fixed on the top crossbeam of the gantry; The y-axis moving platform is arranged on the platform of the x-axis moving platform; the guide rail of the y-axis moving platform is fixed on the platform of the x-axis moving platform; The z-axis lifting platform is provided below the platform of the y-axis moving platform; The z-axis lifting platform comprises a z-axis lifting mechanism, and a lifting platform is provided at the bottom of the z-axis lifting mechanism; A charging hanger is provided at the bottom of the lifting platform.

5. The battery box delivery vehicle charging system according to claim 4, characterized in that: The x-axis moving platform comprises an x-axis guide rail, an x-axis platform, and an x-axis driving mechanism; There are two sets of x-axis guide rails, which are fixed on the top of the charging rack to form parallel linear guide rails; The x-axis platform is horizontally movably installed in the x-axis guide rail; An x-axis driving mechanism is provided at one end of the x-axis guide rail; The x-axis driving mechanism is a screw-nut linear driving mechanism, including a driving screw and a driving nut; One end of the driving screw is connected to the x-axis platform; The driving screw is inserted into the driving nut, and the base of the driving nut is fixed on the charging frame; The driving screw and the driving nut are provided with two sets, which are respectively located on the charging frame and the two sides of the x-axis platform; The driving nuts on both sides are connected to the same driving element to perform synchronous actions; The x-axis driving mechanism includes an x-axis driving motor, an x-axis driving distribution box, and a driving shaft; The motor seat of the x-axis driving motor is fixed on the charging frame, and the output end of the x-axis driving motor is connected to the x-axis driving distribution box; The x-axis drive distribution box is provided with a gear set to convert the input of the x-axis drive motor into a symmetrical dual-axis output; The outputs at both ends of the x-axis drive distribution box are connected to the drive nuts on both sides through drive shafts respectively, so as to synchronously drive the drive nuts.

6. The battery box delivery vehicle charging system according to claim 4, characterized in that: The y-axis moving platform includes a y-axis guide rail, a y-axis platform, and a y-axis driving mechanism; There are two sets of y-axis guide rails, which are fixed in the platform of the x-axis moving platform to form parallel linear guide rails; The y-axis platform is horizontally movably installed in the y-axis guide rail; The y-axis platform is provided with a y-axis driving mechanism, which drives the y-axis platform to move horizontally along the y-axis guide rail; The y-axis driving mechanism is a gear rack driving mechanism, including a rack, a gear, a gear shaft, a y-axis driving distributor, and a y-axis driving motor; The y-axis driving motor is mounted on the y-axis platform; The output shaft end of the y-axis drive motor is provided with a y-axis drive distributor, and the y-axis drive distributor distributes the output of the y-axis drive motor into dual-axis outputs, which are respectively connected to gear shafts; There are two sets of gear rack drive mechanisms, which are respectively located on both sides of the y-axis platform; A gear is provided at the end of the gear shaft; the rack is fixed to the y-axis guide rail and is parallel to the y-axis guide rail; The gear is meshed with the rack; The y-axis driving motor rotates, driving the gear shafts on both sides to rotate, thereby driving the gears to rotate, meshing with the racks, and driving the y-axis platform to perform translational motion.

7. The battery box delivery vehicle charging system according to claim 4, characterized in that: The z-axis lifting platform includes a z-axis lifting mechanism, a z-axis driving mechanism, and a z-axis driving motor; The z-axis lifting mechanism is a scissor mechanism with a lifting platform at the bottom; A z-axis driving mechanism is provided between the lifting platform and the platform of the y-axis moving platform; The z-axis driving mechanism is a bite chain type linear motion mechanism, which provides lifting power and downward pressure for the lifting platform.

8. The battery box delivery vehicle charging system according to claim 1, characterized in that: The top of the power receiving box is provided with an openable and closable rainproof cover; The rainproof cover is a split-type structure, and is opened and closed by a cover driving mechanism; The rainproof cover is installed on the box body through a cover driving mechanism; The housing driving mechanism is a parallelogram driving mechanism, comprising two swing arms, namely a follower swing arm and a driving swing arm; The upper and lower ends of the follower swing arm and the driving swing arm are respectively hinged to the end of the rain cover shell and the side of the box body to form a parallelogram mechanism; A driving part is extended from the bottom of the driving swing arm and connected to the opening and closing driving element; The opening and closing driving element is a linear driving element, the extension rod of which is hinged to the driving part of the driving swing arm, and the fixing rod of which is hinged to the side of the box body; The linear telescopic movement of the opening and closing drive element drives the drive swing arm to swing, thereby driving the rainproof cover shell to move inward to shield the power receiving interface area, or drives the rainproof cover shell to move outward to expose the power receiving interface area.

9. The battery box delivery vehicle charging system according to claim 1, characterized in that: More than two guide locking posts are arranged around the top of the power receiving box; A guide lock sleeve assembly matching the guide lock column is provided below the charging hanger; The lower part of the guide lock column is a cylindrical guide column, and the upper part of the cylindrical guide column is a guide cone; An elliptical head is provided above the guide column, and a guiding arc surface is formed on the top of the elliptical head; The elliptical head and the guide column are connected via a thinner connecting column; The vertical projection shape of the elliptical head is completely contained within the cross-sectional shape of the guide post; The vertical projection shape of the connecting column is completely contained within the vertical projection shape of the elliptical head; The guide lock sleeve assembly includes a guide lock sleeve, a rotating mechanism, a mounting plate, and a rotating drive motor; The guide locking sleeve is installed on the bottom of the mounting plate through the rotating mechanism; The mounting plate is provided with the rotary drive motor, and the output shaft of the rotary drive motor is connected to the rotary mechanism or the guide lock sleeve; the rotary drive motor drives the guide lock sleeve to rotate relative to the mounting plate; Below the guide locking sleeve is a cylindrical guide cylinder, the cross-sectional shape of which matches that of the guide column; A flange is provided on the upper portion of the guide cylinder, and the flange is mounted on the rotating mechanism; An elliptical locking hole is provided in the middle of the flange, and its cross-sectional shape matches the elliptical head; When the guide lock sleeve assembly is sleeved onto the guide lock column, the guide column is inserted into the guide cylinder; the elliptical head passes through the elliptical lock hole in the middle of the flange, and the elliptical head is located above the flange; the connecting column is at the height position of the lock hole.

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