Lifting door device and battery swap station

Abstract

The utility model provides a lifting door device and a battery swap station, the lifting door device comprises door frames, a door body, a driving mechanism and a transmission mechanism, the door body is installed between the door frames through the transmission mechanism, and the driving mechanism is used for driving the transmission mechanism to drive the door body to move up and down; the transmission mechanism comprises gear pairs arranged at the two ends of the moving stroke of the door body and a synchronous belt meshed with the gear pairs, the synchronous belt is connected with the door body, and a guide mechanism used for guiding is further arranged between the door body and the door frame. By using the transmission mechanism with the synchronous belt and the gear pair matched, the door body can be driven by the gear pair to controllably ascend and descend and can stay at any position in the ascending and descending process, and the potential safety hazard that when the lifting door is put down through the gravity of the lifting door, the door body possibly falls accidentally to injure people and damage equipment is avoided; and the safety and the stability are improved.

Description

Technical Field

[0001] The utility model relates to the field of battery replacement, and in particular to a lifting door device and a battery replacement station. Background Art

[0002] Charging and swapping stations for replacing or charging batteries in electric vehicles are widely used. In current charging and swapping stations, battery packs are replaced mainly by moving the battery swapping equipment back and forth between the electric vehicle and the battery compartment. However, due to the presence of the battery swapping equipment, an inlet and outlet are required between the battery compartment and the outside world, which also causes the battery compartment to be connected to the outside world. External debris, animals, and insects may enter through the inlet and outlet, causing damage to the inside of the battery compartment. At the same time, the temperature control in the battery compartment is not easy to maintain.

[0003] In existing battery swap stations, the opening and closing devices of the entrance and exit of the battery swap equipment generally use cylinders as driving devices to drive the door panels. The manufacturing cost of the cylinder and its pneumatic components is relatively high, and there may be air leakage at the air pipe or joints, which may cause unstable opening and closing of the entrance and exit of the battery swap equipment. Moreover, the cylinder as a driving device has only two postures, open and closed. Once an emergency occurs, the cylinder cannot stop operating midway. In addition, the transmission mechanism exerts unbalanced force on the lifting door, the lifting door is unstable during the lifting process, and the transmission mechanism has a relatively small activity space, which may also cause interference with other components in the battery swap station during the operation of the channel opening and closing device. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the problem that in the prior art the driving device has only two postures, open and closed. Once an emergency occurs, the cylinder cannot stop operating midway, and the transmission mechanism applies unbalanced force to the lifting door, the lifting door is unstable during the lifting process, and the transmission mechanism has a relatively small activity space. It may also cause interference defects with other components in the battery swap station during the operation of the channel opening and closing device. A lifting door device and a battery swap station are provided.

[0005] The utility model solves the above technical problems through the following technical solutions:

[0006] A lifting door device comprises a door frame, a door body, a driving mechanism and a transmission mechanism, wherein the door body is installed between the door frames through the transmission mechanism, and the driving mechanism is used to drive the transmission mechanism to drive the door body to move up and down;

[0007] The transmission mechanism includes a gear pair arranged at both ends of the door body's moving stroke and a synchronous belt meshing with the gear pair. The synchronous belt connects the door body. A guiding mechanism for guiding is also provided between the door body and the door frame.

[0008] In the present solution, the above-mentioned structure is adopted, and a transmission mechanism consisting of a synchronous belt and a gear pair is used, so that the door body can rise and fall in a controllable manner under the drive of the gear pair, and can stay at any position during the rising and falling process, thereby avoiding the safety hazard of the door body accidentally falling and injuring people or damaging equipment when the lifting door is lowered by its own gravity, thereby improving safety and stability.

[0009] Preferably, the door frame includes two longitudinal beams arranged opposite to each other and a cross beam connected between the top ends of the two longitudinal beams, the door body is arranged between the two longitudinal beams, the side walls of the longitudinal beams adjacent to the plate surface of the door body form a mounting surface, and the gear pair is arranged at both ends of the mounting surface along the extension direction of the longitudinal beams.

[0010] In this solution, the above structure is adopted, and the transmission mechanism is arranged on the other side of the contact surface between the door frame and the door body, which improves the space utilization and makes the overall structure more compact while avoiding the door body.

[0011] Preferably, the guide mechanism comprises a slide rail provided on the mounting surface and a slider slidably matched with the slide rail, and the slider is fixedly connected to the door body via a connecting plate;

[0012] The synchronous belt is installed on the connecting plate to drive the door body to rise and fall.

[0013] In the present solution, the above-mentioned structure is adopted, and a guide mechanism is provided to limit and guide the door body, so that the door body can be fixed on the door frame and the lifting and lowering of the door body can be made more stable. At the same time, the slider of the guide mechanism is connected to the door panel and the synchronous belt at the same time, so that the entire lifting door device has a higher degree of integration and better stability.

[0014] Preferably, the guide mechanism includes two sliders respectively connected to two ends of the door body along the vertical direction, and the synchronous belt is connected to the connecting plates corresponding to the two sliders.

[0015] In this solution, the above structure is adopted, and the movement of the door body is guided by arranging sliders at both ends of the door body in the vertical direction. At the same time, the two sliders are also respectively connected to the synchronous belt, so that the door body is fixed more firmly, and the synchronous belt can also drive the door body to move up and down more stably.

[0016] Preferably, the synchronous belt is a closed loop; or,

[0017] The two ends of the synchronous belt respectively pass around the gear pairs at the two ends of the door body's moving stroke and are respectively connected to the corresponding connecting plates of the sliders at the two ends of the door body along the vertical direction.

[0018] In this solution, the above structure is adopted, and the synchronous belt can be a closed ring belt, which is directly sleeved on the two gear pairs and the door body is installed on the ring belt as a whole, which is convenient for assembly. The synchronous belt can also be a non-closed synchronous belt, whose two ends respectively bypass the gear pairs and are fixedly connected to the two ends of the door body in the vertical direction, and the door body fills the gaps at both ends of the synchronous belt to form a closed ring belt. At the same time, the synchronous belt can be tightened by adjusting the fixed margin of the synchronous belt, which is convenient for assembly and adjustment, so that the synchronous belt and the gear pair and the assembly effect are better.

[0019] Preferably, the number of the transmission mechanism and the guide mechanism is two, which are respectively arranged on both sides of the moving direction of the door body;

[0020] The driving mechanism comprises a motor for driving the gear pair to rotate and a synchronizing shaft for synchronizing the transmission mechanisms on both sides. The output shaft of the motor is connected to the synchronizing shaft through a coupling.

[0021] In this solution, the above structure is adopted and power is provided by a single motor, which simplifies the overall structure. In addition, by providing guide mechanisms on both sides and arranging synchronous shaft connections, the door body is fixed more stably and the force is more balanced during the lifting process.

[0022] Preferably, the synchronous shaft is fixedly mounted on two ends of corresponding sides of the beam through at least two ends, the driving wheels in the gear pairs on both sides are respectively sleeved on the synchronous shaft, and the motor is arranged at any end of the synchronous shaft.

[0023] In this solution, by adopting the above structure and setting the synchronization shaft at the crossbeam position of the door frame, the space can be rationally utilized so that the synchronization shaft will not block the passage and occupy space.

[0024] Preferably, the driven wheels in the gear pair are respectively arranged on the other end of the longitudinal beam through a mounting seat.

[0025] In this solution, the above structure is adopted, and a mounting seat is provided to be fixed to the longitudinal beam, and the driven wheel is rotatably provided on the mounting seat, so that the fixing and transmission of the driven wheel can be simply achieved.

[0026] Preferably, a buffer is provided on the side of the cross beam facing the door body for contacting the door body.

[0027] In this solution, the above structure is adopted, and the buffer member can reduce the collision impact of the door body relative to the crossbeam, absorb the kinetic energy of the door body and help the door body to brake at the highest position, avoiding possible damage caused by direct collision.

[0028] Preferably, the lifting door device further comprises a position sensor, wherein the position sensor is fixed on the door frame, and the position sensor is capable of detecting the position of the sliding block on the moving path when the sliding block moves on the sliding rail.

[0029] In this solution, the above structure is adopted to detect the position of the slider and control the start and stop of the motor to open and close the door.

[0030] Preferably, the position sensor comprises a first sensor located at a high position of the moving path of the slider and a second sensor located at a low position of the moving path of the slider.

[0031] In this solution, the above structure is adopted to detect and control the opening and closing of the door respectively.

[0032] A battery swap station comprises the lifting door device as described above.

[0033] In the present solution, the above-mentioned structure is adopted, and the lifting door device uses a transmission mechanism consisting of a synchronous belt and a gear pair, so that the door body can rise and fall in a controllable manner under the drive of the gear pair, and can stay at any position during the rising and falling process, thereby avoiding the safety hazard of the door body accidentally falling and injuring people or damaging equipment when the lifting door is lowered by its own gravity, thereby improving safety and stability.

[0034] The positive progressive effect of the utility model is that the utility model discloses a lifting door device and a battery swap station. The lifting door device uses a transmission mechanism composed of a synchronous belt and a gear pair, so that the door body can be controllably raised and lowered under the drive of the gear pair, and can stay at any position during the rising and falling process, avoiding the safety hazard of the door body accidentally falling and injuring people and damaging equipment when the lifting door is lowered by its own gravity, thereby improving safety and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 The figure is a schematic structural diagram of a lifting door device according to an embodiment of the utility model.

[0036] Figure 2 The figure is a schematic diagram of a partial structure of a lifting door device on one side according to an embodiment of the utility model.

[0037] Figure 3 The figure is a schematic diagram of the connection structure of the door body, the slider and the synchronous belt in one embodiment of the utility model.

[0038] Figure 4 The figure is a schematic diagram of the connection structure of the door body according to one embodiment of the present invention.

[0039] Figure 5 The top partial structure diagram of the lifting door device according to one embodiment of the utility model is shown.

[0040] Figure 6 The figure is a schematic diagram of the bottom partial structure of a lifting door device according to an embodiment of the utility model.

[0041] Description of reference numerals:

[0042] Door frame 10

[0043] Stringer 11

[0044] Mounting surface 111

[0045] Beam 12

[0046] Buffer 121

[0047] Door 20

[0048] Connecting plate 21

[0049] Positioning plate 22

[0050] Fixed plate 23

[0051] Guide mechanism 30

[0052] Slide 31

[0053] Slider 32

[0054] Transmission mechanism 40

[0055] Synchronous belt 41

[0056] Gear pair 42

[0057] Driving wheel 421

[0058] Driven wheel 422

[0059] Mounting Block 423

[0060] Driving mechanism 50

[0061] Motor 51

[0062] Synchronous shaft 52

[0063] Position sensor 60

[0064] First sensor 61

[0065] Second sensor 62

[0066] Sensor bracket 63 DETAILED DESCRIPTION

[0067] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0068] This embodiment provides a battery swap station, which includes at least one battery compartment and an operation compartment. The battery compartment is used to store and charge batteries, and the operation compartment is used for electric vehicles to drive in and replace batteries. The battery swap station moves between the battery compartment and the operation compartment through the battery swap equipment and completes the transportation, installation, disassembly, and placement of batteries. Due to the battery working environment requirements and safety requirements, the battery compartment needs to be equipped with a lifting door device to form an openable and closable passage. The lifting door device can close the passage and open the passage when the battery swap equipment enters and exits the battery swap station.

[0069] like Figure 1 As shown, this embodiment provides a lifting door device, which includes a door frame 10, a door body 20, a driving mechanism 50 and a transmission mechanism 40. The door body 20 is installed between the door frame 10 through the transmission mechanism 40. The driving mechanism 50 is used to drive the transmission mechanism 40 to drive the door body 20 to move up and down. The transmission mechanism 40 includes a gear pair 42 arranged at both ends of the moving stroke of the door body 20 and a synchronous belt 41 meshed with the gear pair 42. The synchronous belt 41 connects the door body 20, and a guide mechanism 30 for guiding is also provided between the door body 20 and the door frame 10. Specifically. The lifting door device of this embodiment is a lifting lifting door. The door frame 10 is arranged on one side of the battery compartment. The door frame 10 is provided with a transmission mechanism 40 for driving the door body 20 to move up and down, a driving mechanism 50 for driving the transmission mechanism 40 to move, and a guide mechanism 30 for guiding and limiting the moving direction of the door body 20. The transmission mechanism 40 is specifically arranged at a gear pair 42 and a synchronous belt 41 on the door frame 10, the door body 20 is fixed on the synchronous belt 41, and the driving mechanism 50 drives the gear pair 42 to rotate and drives the synchronous belt 41 to roll, thereby lifting or lowering the door body 20. By using the transmission mechanism 40 matched with the synchronous belt 41 and the gear pair 42, the door body 20 can be controlled to rise and fall under the drive of the gear pair 42, and can stay at any position during the rising and falling process, avoiding the potential safety hazard of the door body 20 accidentally falling and injuring people and damaging equipment when the lifting door is lowered by its own gravity, thereby improving safety and stability.

[0070] like Figure 1As shown, the door frame 10 includes two longitudinal beams 11 arranged opposite to each other and a cross beam 12 connected between the top ends of the two longitudinal beams 11, the door body 20 is arranged between the two longitudinal beams 11, and the side walls of the longitudinal beams 11 adjacent to the plate surface of the door body 20 form a mounting surface 111, and the gear pair 42 is arranged at the two end positions of the mounting surface 111 along the extension direction of the longitudinal beams 11. Specifically, the door body 20 is connected to the longitudinal beams 11 of the door frame 10, and the movement direction of the door body 20 is consistent with the extension direction of the longitudinal beams 11. The transmission mechanism 40 and the guide mechanism 30 are both arranged on the longitudinal beams 11, wherein the door body 20 is sandwiched between the two longitudinal beams 11, and the transmission mechanism 40 is not arranged between the door body 20 and the longitudinal beams 11, but is arranged on the mounting surface 111 adjacent to the side of the longitudinal beams 11 facing the door body 20. The transmission mechanism 40 is arranged on the other side of the contact surface between the door frame 10 and the door body 20, while avoiding the door body 20, the space utilization rate is improved and the overall structure is more compact. In this embodiment, the transmission mechanism 40 is installed on the side facing the inner side of the charging compartment, so that the transmission mechanism 40 is not exposed to the outside world and will not be affected by the external environment, and can operate more stably. In other embodiments, it can also be set in other positions.

[0071] The transmission mechanism 40 of this embodiment is as follows Figure 1 , Figure 2 As shown, the gear pair 42 includes a driving wheel 421 and a driven wheel 422 arranged at the upper and lower positions of the longitudinal beam 11, and the synchronous belt 41 is arranged along the extension direction of the longitudinal beam 11 and passes around the driving wheel 421 and the driven wheel 422. The door body 20 is fixed to a specific position of the transmission belt. When the driving wheel 421 is driven to rotate by the driving mechanism 50, the driving wheel 421 drives the synchronous belt 41 to rotate and then drives the driven wheel 422 to rotate. When the synchronous belt 41 rotates, the specific position fixed to the door body 20 can move between the setting positions of the driving wheel 421 and the driven wheel 422. The driving wheel 421 and the driven wheel 422 jointly define the lifting and lowering travel of the door body 20.

[0072] like Figures 1 to 3 As shown, the guide mechanism 30 includes a slide rail 31 provided on the mounting surface 111 and a slider 32 that slides with the slide rail 31, and the slider 32 is fixedly connected to the door body 20 through the connecting plate 21. The synchronous belt 41 is installed on the connecting plate 21, thereby driving the door body 20 to rise and fall. Specifically, in this embodiment, the slide rail 31 is concave and has a sliding groove, and the slider 32 is clamped in the sliding groove of the slide rail 31 and is limited to only move along the extending direction of the slide rail 31, so that it cannot escape from the slide rail 31 in the horizontal direction. The slider 32 is also fixed to the door body 20 and the synchronous belt 41 at the same time. The transmission mechanism 40 and the guide mechanism 30 are both acted on the door body 20 through the slider 32. In this embodiment, the slider 32 is connected to the door body 20 through the connecting plate 21. By setting the guide mechanism 30 to limit and guide the door body 20, the door body 20 can be fixed on the door frame 10 and the lifting and lowering of the door body 20 can be more stable.

[0073] The specific connection structure of the slider 32, the connecting plate 21 and the synchronous belt 41 is as follows: Figure 3 , Figure 4 As shown, one end of the connecting plate 21 covers the edge of the door body 20 and is connected to the door body 20, and the other end of the connecting plate 21 extends to the mounting surface 111 of the longitudinal beam 11 and the slider 32 and is fixedly connected to the slider 32. The reverse side of the connecting surface of the connecting plate 21, the slider 32 and the door body 20 is used to connect with the synchronous belt 41. The back of the connecting plate 21 is provided with a positioning plate 22 and a fixing plate 23. The positioning plate 22 is provided with a through groove with a width equivalent to that of the synchronous belt 41. The synchronous belt 41 is clamped in the through groove. The fixing plate 23 and the connecting plate 21 are respectively connected to the two sides of the positioning plate 22 to clamp the synchronous belt 41 therein to complete the fixation. A sawtooth structure corresponding to the synchronous belt 41 can be provided on one side of the connecting plate 21 and the fixing plate 23, so that it can be coupled with the synchronous belt 41 to achieve better fixation. The slider 32 of the guide mechanism 30 is connected to the door panel and the synchronous belt 41 at the same time, so that the whole lifting door device has a higher degree of integration and better stability.

[0074] like Figure 1 , Figure 2 As shown, the two ends of the synchronous belt 41 respectively bypass the gear pairs 42 at the two ends of the moving stroke of the door body 20 and are respectively connected to the corresponding connecting plates 21 of the sliders 32 at the two ends of the door body 20 in the vertical direction. In this embodiment, the synchronous belt 41 is a non-closed synchronous belt 41, and its two ends respectively bypass the gear pairs 42 and are fixedly connected to the two ends of the door body 20 in the vertical direction. The door body 20 fills the gaps at the two ends of the synchronous belt 41 to form a closed loop belt. At the same time, the synchronous belt 41 can be tightened by adjusting the fixed margin of the synchronous belt 41, which is convenient for assembly and adjustment, so that the synchronous belt 41 and the gear pair 42 have a better assembly effect.

[0075] In another embodiment, the synchronous belt 41 may also be a conventional closed loop synchronous belt 41, which is directly sleeved on the two gear pairs 42 and the door body 20 is integrally mounted on the loop synchronous belt 41, which is more convenient to assemble.

[0076] like Figure 4 As shown, the guide mechanism 30 includes two sliders 32, which are respectively connected to the two ends of the door body 20 in the vertical direction, and the synchronous belt 41 is connected to the connecting plates 21 corresponding to the two sliders 32. The movement of the door body 20 is guided by providing sliders 32 at both ends of the door body 20 in the vertical direction. At the same time, the two sliders 32 are also respectively connected to the synchronous belt 41, so that the door body 20 is fixed more firmly, and the synchronous belt 41 can also drive the door body 20 to move up and down more stably. In other embodiments, a longer slider 32 can be provided, which can also achieve the guiding effect.

[0077] like Figure 1 , Figure 5 As shown, there are two transmission mechanisms 40 and guide mechanisms 30, which are respectively arranged on both sides of the moving direction of the door body 20. The driving mechanism 50 includes a motor 51 for driving the gear pair 42 to rotate and a synchronization shaft 52 for synchronizing the transmission mechanisms 40 on both sides. The output shaft of the motor 51 is connected to the synchronization shaft 52 through a coupling. Specifically, in this embodiment, a set of symmetrical transmission mechanisms 40 and guide mechanisms 30 are arranged on the longitudinal beams 11 on both sides of the door body 20. The driving mechanism 50 is a single driving source, and the motor 51 drives the two transmission mechanisms 40 by rotating the synchronization shaft 52 that drives the driving wheels 421 connected to the two transmission mechanisms 40. This solution can make the overall structure more compact, and at the same time, a single motor provides power, which simplifies the overall structure. In addition, by setting the guide mechanism 30 on both sides and setting the synchronization shaft 52 to connect, the door body 20 is fixed more stably and the force is more balanced during the lifting process.

[0078] like Figure 5 As shown, the synchronous shaft 52 is arranged at two ends of the corresponding side surfaces of the cross beam 12 through at least two end fixing seats, the driving wheels 421 in the gear pairs 42 on both sides are respectively sleeved on the synchronous shaft 52, and the motor 51 is arranged at any end of the synchronous shaft 52. The end fixing seats protrude from the two ends of the cross beam 12 and are arranged opposite to each other, and the synchronous shaft 52 is arranged on the protruding parts. In this embodiment, the motor 51 is also arranged on the end fixing seats. By arranging the synchronous shaft 52 at the position of the cross beam 12 of the door frame 10, the space can be reasonably utilized, so that the synchronous shaft 52 will not block the passage and occupy space.

[0079] like Figure 1 , Figure 6 As shown, the driven wheels 422 in the gear pair 42 are respectively arranged at the other end of the longitudinal beam 11 through the mounting seats 423. The mounting surface 111 at the bottom end of the longitudinal beam 11 is provided with a mounting seat 423 protruding outward, and the mounting seat 423 is provided with a rotating shaft, and the driven wheel 422 is arranged on the rotating shaft, wherein the rotating shaft of the mounting seat 423 and the projection of the synchronous shaft 52 in the vertical direction are coincident, ensuring that the transmission mechanism 40 is flush with the longitudinal beam 11. By setting the mounting seat 423 to be fixed to the longitudinal beam 11, the driven wheel 422 is rotatably arranged on the mounting seat 423, and the fixing and transmission of the driven wheel 422 can be simply achieved.

[0080] like Figure 5As shown, a buffer 121 is provided on the side of the cross beam 12 facing the door body 20, which is used to contact the door body 20. The buffer 121 can reduce the impact of the door body 20 against the cross beam 12, absorb the kinetic energy of the door body 20 to help the door body brake at the highest position, and avoid damage that may be caused by direct collision. Specifically. The buffer 121 can select a mechanism with a certain elasticity to absorb the impact force through elasticity. The buffer 121 can also select a structure with a certain ductility such as foam plastic to absorb energy.

[0081] like Figure 1 , Figure 2 and Figure 6 As shown, the door lifting device further includes a position sensor 60, which is fixed to the door frame 10. The position sensor 60 can detect the position of the slider 32 on the moving path when the slider 32 moves on the slide rail 31. The position sensor 60 can detect the position of the slider 32 to control the start and stop of the motor 51 to open and close the door. Specifically, Figure 2 As shown, the position sensor 60 includes a first sensor 61 located at a high position of the moving path of the slider 32 and a second sensor 62 located at a low position of the moving path of the slider 32. The first sensor 61 and the second sensor 62 are respectively arranged at the top and bottom ends of the longitudinal beam 11 and are used to detect whether the slider 32 is located at the starting point and the end point of the travel of the door body 20 to control the start or stop of the motor 51 to control the opening and closing of the door. The position sensor 60 can be a common sensor such as an image sensor, a motion sensor, etc., which realizes position detection by detecting the slider 32. The position sensor 60 is fixed by a sensor bracket 63.

[0082] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A lifting door device, characterized in that: It comprises a door frame, a door body, a driving mechanism and a transmission mechanism, wherein the door body is installed between the door frames through the transmission mechanism, and the driving mechanism is used to drive the transmission mechanism to drive the door body to move up and down; The transmission mechanism includes a gear pair arranged at both ends of the door body's moving stroke and a synchronous belt meshing with the gear pair. The synchronous belt connects the door body. A guiding mechanism for guiding is also provided between the door body and the door frame.

2. The lifting door device according to claim 1, characterized in that: The door frame includes two longitudinal beams arranged opposite to each other and a cross beam connected between the top ends of the two longitudinal beams. The door body is arranged between the two longitudinal beams. The side walls of the longitudinal beams adjacent to the plate surface of the door body form a mounting surface. The gear pair is arranged at both ends of the mounting surface along the extension direction of the longitudinal beams.

3. The lifting door device according to claim 2, characterized in that: The guide mechanism comprises a slide rail arranged on the mounting surface and a slider slidably matched with the slide rail, and the slider is fixedly connected to the door body through a connecting plate; The synchronous belt is installed on the connecting plate to drive the door body to rise and fall.

4. The lifting door device according to claim 3, characterized in that: The guiding mechanism comprises two sliding blocks respectively connected to two ends of the door body along the vertical direction, and the synchronous belt is connected to the connecting plates corresponding to the two sliding blocks.

5. The lifting door device according to claim 3, characterized in that: The synchronous belt is in a closed loop; or, The two ends of the synchronous belt respectively pass around the gear pairs at the two ends of the door body's moving stroke and are respectively connected to the corresponding connecting plates of the sliders at the two ends of the door body along the vertical direction.

6. The lifting door device according to claim 2, characterized in that: There are two transmission mechanisms and two guide mechanisms, which are respectively arranged on both sides of the door body's moving direction. The driving mechanism includes a motor for driving the gear pair to rotate and a synchronous shaft for synchronizing the transmission mechanisms on both sides. The output shaft of the motor is connected to the synchronous shaft through a coupling.

7. The lifting door device according to claim 6, characterized in that: The synchronous shaft is fixedly mounted on two ends of the corresponding side surfaces of the beam through at least two ends, the driving wheels in the gear pairs on both sides are respectively sleeved on the synchronous shaft, and the motor is arranged at any end of the synchronous shaft.

8. The lifting door device according to claim 2, characterized in that: The driven wheels in the gear pair are respectively arranged on the other end of the longitudinal beam through mounting seats.

9. The lifting door device according to claim 2, characterized in that: A buffer is provided on the side of the cross beam facing the door body, for contacting the door body.

10. The lifting door device according to claim 3, characterized in that: The lifting door device further comprises a position sensor, which is fixed on the door frame and can detect the position of the sliding block on the moving path when the sliding block moves on the sliding rail.

11. The lifting door device according to claim 10, characterized in that: The position sensor includes a first sensor located at a high position of the slider moving path and a second sensor located at a low position of the slider moving path.

12. A battery swap station, characterized in that: It comprises a lifting door device as claimed in any one of claims 1 to 11.

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