Lifting door device and battery swap station

Abstract

The utility model discloses a lifting door device and a battery replacing station. The lifting door device comprises a door frame, a door body, a driving mechanism, a transmission mechanism and a counterweight part, the door body is arranged in the door frame in a lifting and moving mode, the transmission mechanism is connected between the door body and the balance weight part, the driving mechanism is arranged above the door body and connected to the transmission mechanism, and the driving mechanism drives the door body to move up and down in the vertical direction. According to the lifting door device and the battery swap station, the driving mechanism is arranged above the door body, so that the occupation of the driving mechanism on the peripheral space of the lifting door can be reduced. The overall width of the lifting door device is reduced, the overall integration degree and the space utilization rate are improved, by arranging the balance weight part, the power requirement for the driving mechanism can be reduced, and therefore the size of the driving mechanism is reduced, and the space utilization rate is increased.

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 battery swap equipment entrance and exit passages generally have the drive device set on the side, and the door body is pulled by a longitudinally arranged transmission mechanism. The drive mechanism needs to be able to lift the door body, and its driving force has certain requirements. Therefore, it is large in size and occupies more side space, which makes the overall horizontal space utilization of the lifting door low, the integration is poor, and it will also affect the layout of other components in the battery swap station, and the economic efficiency is poor. Utility Model Content

[0004] The technical problem to be solved by the present invention is to overcome the defects of the prior art that the overall lateral space utilization rate of the lifting door is low, the integration is poor, the arrangement of other components in the battery swap station is affected, and the economy is poor, and 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, a transmission mechanism and a counterweight;

[0007] The door body can be lifted and moved in the door frame, the transmission mechanism is connected between the door body and the counterweight part, the drive mechanism is arranged above the door body and connected to the transmission mechanism, and the drive mechanism drives the door body to move up and down in the vertical direction.

[0008] In this solution, the above structure is adopted, and the driving mechanism is arranged above the door body, which can reduce the encroachment of the driving mechanism on the space around the lifting door. The overall width of the lifting door device is reduced, and the overall integration and space utilization are improved. By setting the counterweight part, the power requirement for the driving mechanism can be reduced, and the volume of the driving mechanism can be reduced, thereby increasing the space utilization.

[0009] Preferably, the transmission mechanism includes a chain and two gears, the two gears are respectively arranged above the center position of the lifting and lowering movement of the door body and the counterweight part, the chain is meshed with the two gears and extends to be connected to the door body and the counterweight part, and the driving machine part is connected to the area of ​​the chain located between the two gears.

[0010] In the present solution, the above-mentioned structure is adopted, and the driving mechanism can convert its driving force from any direction into the ability to lift or lower the door body and the counterweight part in the vertical direction through gears and chains, so that the driving mechanism can be set in a suitable position. The chain extends in the horizontal direction so that the driving mechanism can be arranged horizontally above the door body, thereby reducing the encroachment of the driving mechanism on the space around the lifting door.

[0011] Preferably, the door frame includes two longitudinal beams and a cross beam connecting the two longitudinal beams by a top surface, and a mounting rod arranged parallel to the cross beam and higher than the highest position of the door body, and the mounting rod is used to install the driving mechanism and the gear located above the door body.

[0012] In this solution, by adopting the above structure, the mounting rod can provide mounting space for the driving mechanism and the transmission mechanism, thereby increasing the mounting strength of the driving mechanism and the transmission mechanism, and does not affect the lifting and lowering of the door body.

[0013] Preferably, the longitudinal beam in the door frame close to the counterweight portion is provided with an outwardly extending mounting frame, and the mounting frame is used for mounting the gear corresponding to the counterweight portion.

[0014] In this solution, by adopting the above structure and providing a mounting frame, the gear corresponding to the counterweight can be arranged outside the longitudinal beam, thereby providing an installation space for the counterweight so that the counterweight will not be interfered by the longitudinal beam.

[0015] Preferably, the mounting rod is provided with a first guide rail and a first slider slidably matched with the first guide rail on one side of the chain, the chain is fixed on the first slider, and the power output end of the driving mechanism is connected to the first slider, thereby driving the door body to move up and down.

[0016] In this solution, the above structure is adopted, and the mounting frame is provided with a first guide rail and a first slider. The first slider is fixed to the chain and serves as a power connection point of the chain. The first guide rail can limit and guide the movement of the first slider.

[0017] Preferably, the driving mechanism comprises an electric push rod which can be extended and retracted in a horizontal direction, and the extended end of the electric push rod is a power output end and is connected to the transmission mechanism.

[0018] In this solution, the above structure is adopted, and the electric push rod is more economical and more stable and accurate when driving.

[0019] Preferably, the counterweight portion is cylindrical; and / or,

[0020] The weight of the counterweight is the same as the weight of the door body.

[0021] In this solution, the above structure is adopted. Compared with the polygon, the cylindrical shape can reduce the invasion of the counterweight block on the space around the lifting door to a certain extent. At the same time, the cylindrical shape is easier to maintain balance, which can make the lifting of the door body more stable. The weight of the counterweight part is the same as the weight of the door body, so that the transmission mechanism can be balanced and remain stationary when it is only affected by the weight of the counterweight part and the door body without external force, so that the driving mechanism can achieve the lifting effect by applying a small force to break the force balance state of the transmission mechanism, reducing the demand for driving force, and can reduce the cost of the driving mechanism, which is more economical.

[0022] Preferably, the counterweight part is also provided with a counterweight guide part, the counterweight guide part is fixed to the door frame, the counterweight guide part extends in a vertical direction, and the counterweight part is movably connected to the counterweight guide part and moves along the extension direction of the counterweight guide part.

[0023] In this solution, the above structure is adopted to further avoid adverse situations caused by accidental shaking of the counterweight.

[0024] Preferably, the counterweight portion is provided with a through hole, the counterweight guide portion comprises a guide column, and the counterweight portion is inserted through the through hole on the guide column.

[0025] In this solution, the above structure is adopted, which can conveniently realize the guidance of the counterweight part without occupying additional lateral space of the lifting door.

[0026] Preferably, it also includes a guiding mechanism, which includes a guiding groove and a guiding block, the guiding groove is arranged on the longitudinal beam, the guiding block is fixed to the door body, the guiding groove extends along the movement direction of the door body, the guiding block is clamped in the guiding groove and can slide along the guiding groove, the guiding groove is staggered with the door body on the surface of the longitudinal beam, and the guiding block is connected to the inner surface of the door body.

[0027] In the present solution, the above-mentioned structure is adopted, and the guide groove is arranged on the longitudinal beam and staggered with the door body, so that the guide block does not need to be arranged between the side of the door body and the longitudinal beam, but can be directly arranged on the inner surface of the door body so that it overlaps with the door body in the length direction of the door body. Compared with directly setting the guide block in the middle of the door frame and the door body, the overall width of the door frame can be reduced to a certain extent.

[0028] Preferably, a reinforcing portion is provided in the door body, the reinforcing portion is longitudinally arranged inside the door body and supports the door body, a reinforcing plate is provided at the bottom of the reinforcing portion, one end of the reinforcing plate is connected to the side surface of the reinforcing portion, and the other end of the reinforcing plate is connected to the bottom surface of the door body.

[0029] In this solution, the above structure is adopted, the reinforcement part is arranged inside the door body to longitudinally support the door body, and the reinforcement plate further strengthens the strength of the door body.

[0030] A battery swap station comprises the lifting door device as described above.

[0031] In this solution, the above structure is adopted, and the driving mechanism of the lifting door device of the battery swap station is arranged above the door body, which can reduce the encroachment of the lifting drive mechanism on the space around the lifting door. The overall width of the lifting door device is reduced, and the overall integration and space utilization are improved. By setting the counterweight part, the power requirement of the driving mechanism can be reduced, and the volume of the driving mechanism can be reduced, further increasing the space utilization.

[0032] The positive progress effect of the utility model is that the utility model discloses a lifting door device and a battery swap station, wherein the driving mechanism of the lifting door device is arranged above the door body, which can reduce the encroachment of the lifting driving mechanism on the space around the lifting door, reduce the overall width of the lifting door device, improve the overall integration and space utilization, and by arranging the counterweight part, reduce the power requirement of the driving mechanism, thereby reducing the volume of the driving mechanism and increasing the space utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 Schematic diagram of the structure of the lifting door device of this embodiment.

[0034] Figure 2 It is a schematic diagram of the top partial structure of the lifting door device of this embodiment.

[0035] Figure 3 It is a schematic diagram of the partial structure of the side of the lifting door device of this embodiment.

[0036] Figure 4 Schematic diagram of the structure of the counterweight portion of the lifting door device of this embodiment.

[0037] Figure 5 Schematic diagram of the structure of the transmission mechanism of the lifting door device of this embodiment.

[0038] Figure 6 It is a schematic diagram of the partial structure of the connection part between the door body and the door frame of the lifting door device of this embodiment.

[0039] Figure 7 It is a schematic diagram of the partial structure of the door body of the lifting door device of this embodiment.

[0040] Description of reference numerals:

[0041] Door frame 10

[0042] Stringer 11

[0043] Mounting surface 111

[0044] Beam 12

[0045] Door 20

[0046] Connection part 21

[0047] Reinforcement 22

[0048] Reinforcement plate 23

[0049] Cavity 24

[0050] Protrusion 241

[0051] Guide mechanism 30

[0052] Guide groove 31

[0053] Guide block 32

[0054] Transmission mechanism 40

[0055] Chain 41

[0056] Gear 42

[0057] Mounting rod 43

[0058] Mounting frame 44

[0059] First rail 431

[0060] First slider 432

[0061] Driving mechanism 50

[0062] Electric push rod 51

[0063] Power output 52

[0064] Counterweight 60

[0065] Guide column 61

[0066] Through hole 62 DETAILED DESCRIPTION

[0067] The present invention is further described below by way of embodiments, but the present invention is not limited to the scope of the embodiments.

[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, a transmission mechanism 40 and a counterweight 60. The door body 20 can be lifted and moved in the door frame 10, the transmission mechanism 40 is connected between the door body 20 and the counterweight 60, the driving mechanism 50 is arranged above the door body 20 and connected to the transmission mechanism 40, and the driving mechanism 50 drives the door body 20 to move up and down in the vertical direction. 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, and the door frame 10 is provided with a transmission mechanism 40 for driving the door body 20 to move up and down, and a driving mechanism 50 for driving the transmission mechanism 40 to move. The transmission mechanism 40 and the driving mechanism 50 are both arranged above the door body 20, and are located above the highest position of the movement of the door body 20. The driving mechanism is arranged above the door body 20, which can reduce the occupation of the space around the lifting door by the driving mechanism 50. Reduce the overall width of the lifting door device, and improve the overall integration and space utilization. The transmission mechanism 40 is arranged horizontally, and the counterweight 60 and the door body 20 are respectively mounted at both ends of the transmission mechanism 40 in the horizontal direction. The driving mechanism 50 drives the transmission mechanism 40 to move horizontally to lift or lower the door body 20. The counterweight 60 and the door body 20 are respectively connected to the two ends of the transmission mechanism 40 to offset the weight of the door body 20 by their own weight, thereby reducing the driving force requirement of the driving mechanism 50, so that the driving mechanism 50 only needs to apply a small force to lift the door body 20, thereby reducing the volume of the driving mechanism 50 and making the lifting door device more compact.

[0070] like Figure 2 , Figure 4As shown, the transmission mechanism 40 includes a chain 41 and two gears 42. The two gears 42 are respectively arranged above the center position of the lifting movement of the door body 20 and the counterweight part 60. The chain 41 is meshed with the two gears 42 and extends to connect with the door body 20 and the counterweight part 60. The driving machine part is connected to the area of ​​the chain 41 between the two gears 42. Specifically, the chain 41 of the transmission mechanism 40 is arranged horizontally, and gears 42 are arranged at both ends of the horizontal direction. The gears 42 are respectively arranged just above the counterweight part 60 and just above the door body 20. The chain 41 bypasses the gears 42 and then extends downward in the vertical direction and is respectively connected with the counterweight part 60 and the door body 20. The chain 41 can reciprocate in the horizontal direction, thereby lifting or lowering the door body 20. In this embodiment, the gears 42 are all located just above the counterweight part 60 and just above the center of gravity of the door body 20, which is the most labor-saving. In other embodiments, the gear 42 may be offset, and the chain 41 connects the counterweight 60 and the door body 20 at a certain angle to avoid certain structures. The drive mechanism 50 can convert its driving force from any direction into the ability to lift or lower the door body and the counterweight 60 in the vertical direction through the gear 42 and the chain 41, so that the drive mechanism 50 can be set in a suitable position. In this embodiment, the chain 41 extends in the horizontal direction so that the drive mechanism 50 can be arranged above the door body in the horizontal direction, thereby reducing the encroachment of the drive mechanism 50 on the space around the lifting door.

[0071] like Figure 1 , Figure 2 As shown, the door frame 10 includes two longitudinal beams 11 and a cross beam 12 connected to the two longitudinal beams 11 by a top surface, and a mounting rod 43 arranged parallel to the cross beam 12 and higher than the highest position of the door body 20. The mounting rod 43 is used to install the drive mechanism 50 and the gear 42 located above the door body 20. Specifically, the door body 20 is connected to the longitudinal beam 11 of the door frame 10, and the movement direction of the door body 20 is consistent with the extension direction of the longitudinal beam 11. The mounting rod 43 is arranged above the highest position of the moving path of the door body 20, extending in the horizontal direction and connected to the longitudinal beam 11 at both ends. The chain 41 and the gear 42 of the transmission mechanism 40 are arranged on the mounting rod 43. The mounting rod 43 can provide installation space for the drive mechanism 50 and the transmission mechanism 40, and increase the installation strength of the drive mechanism 50 and the transmission mechanism 40. And it does not affect the lifting and lowering of the door body 20.

[0072] like Figure 4As shown, the longitudinal beam 11 near the counterweight 60 in the door frame 10 is provided with an outwardly extending mounting frame 44, and the mounting frame 44 is used to mount the gear 42 corresponding to the counterweight 60. Specifically, the height of the mounting frame 44 in the vertical direction is the same as that of the mounting rod 43, and its setting position corresponds to the mounting rod 43, but it is connected to both sides of a longitudinal beam 11 respectively with the mounting rod 43, and the mounting frame 44 extends outward from the outside of the longitudinal beam 11, and the gear 42 connected to the counterweight 60 is fixed to the end of the mounting frame 44. By providing the mounting frame 44, the gear 42 corresponding to the counterweight 60 can be set outside the longitudinal beam 11, thereby providing a setting space for the counterweight 60, so that the counterweight 60 can be free from interference by the longitudinal beam 11.

[0073] like Figure 3 As shown, the mounting rod 43 is provided with a first guide rail 431 and a first slider 432 that is slidably matched with the first guide rail 431 on one side facing the chain 41, the chain 41 is fixed on the first slider 432, and the power output end 52 of the driving mechanism 50 is connected to the first slider 432, thereby driving the door body 20 to move up and down. Specifically, the mounting rod 43 is provided with a first guide rail 431 extending in a horizontal direction and a first slider 432 that is arranged on the first guide rail 431 and can slide back and forth along the extension direction of the first guide rail 431 on one side close to the counterweight part 60, the first slider 432 is respectively fixed to the power output end 52 of the driving mechanism 50 and the chain 41, and is used to pull the chain 41 to move, the first guide rail 431 is located in the middle position of the door body 20 and the counterweight part 60, and limits the range of movement of the chain 41 and the range of travel of the door body 20 to move up and down, when the first slider 432 moves to one end of the first guide rail 431 close to the counterweight part 60, the door body 20 is at its highest position. The mounting frame 44 is provided with a first guide rail 431 and a first slider 432 . The first slider 432 is fixed to the chain 41 and serves as a power connection point of the chain 41 . The first guide rail 431 can limit and guide the movement of the first slider 432 .

[0074] like Figure 3 to Figure 4As shown, the driving mechanism 50 includes an electric push rod 51 that can be extended and retracted in the horizontal direction, and the extended end of the electric push rod 51 is a power output end 52 and is connected to the transmission mechanism 40. Specifically, the electric push rod 51 includes an electric cylinder and a telescopic rod, the electric cylinder is fixed at the bottom of the crossbeam 12, the telescopic rod extends from one side of the electric cylinder in the horizontal direction and can reciprocate in the horizontal direction, and the end of the telescopic rod is the extended end, which is connected and fixed to the power output end 52, and is connected to the first slider 432 through the power output end 52. In this embodiment, the telescopic rod is located above the first slide rail and the first slider 432, and the power output end 52 is a plate, the upper end of the connecting plate is fixedly connected to the extended end of the telescopic rod, and the lower end of the plate is fixedly connected to the first slider 432, and the connection position is on the side. The electric push rod 51 is more economical and more stable and accurate when driven. In other embodiments, the relative position of the electric push rod 51 and the first slider 432 can also be set to be set in the front and rear directions at the same horizontal height, which can reduce the overall height and thickness of the lifting door device.

[0075] like Figure 5 As shown, the counterweight part 60 is cylindrical. Compared with the polygon, the cylindrical shape can reduce the encroachment of the counterweight block on the space around the lifting door to a certain extent. At the same time, the cross-section of the cylinder is circular, and the center of gravity is located at the center of the circle. Since the distance from the center of the circle to its circumferential direction is its radius, the mass of the cylindrical counterweight part in the circumferential direction at the center of its cross-section is also uniform. Therefore, it is easier to maintain balance than polygons and other shapes, and the lifting and lowering of the door body can be more stable. In this embodiment, the weight of the counterweight part 60 is the same as the weight of the door body. The weight of the counterweight part 60 is the same as the weight of the door body, so that the transmission mechanism 40 can be kept stationary under force balance when it is only subjected to the weight of the counterweight part 60 and the door body in the absence of external force, so that the driving mechanism 50 can achieve the lifting effect by only applying a small force to break the force balance state of the transmission mechanism 40, thereby reducing the demand for driving force, and can reduce the cost of the driving mechanism 50, which is more economical. In other embodiments, even if the weight of the counterweight 60 is not the same as that of the door body 20 , the weight of the counterweight 60 can offset the weight of the door body 20 and reduce the driving force required by the driving mechanism 50 .

[0076] like Figure 5 As shown, the counterweight part 60 is also provided with a counterweight guide part, which is fixed to the door frame 10, and the counterweight guide part extends in the vertical direction. The counterweight part 60 is movably connected to the counterweight guide part and moves along the extension direction of the counterweight guide part. A through hole 62 is provided on the counterweight part 60, and the counterweight guide part includes a guide column 61. The counterweight part 60 is passed through the guide column 61 through the through hole 62. The use of this structure can conveniently realize the guidance of the counterweight part 60 without occupying additional lateral space of the lifting door. Further avoid the adverse situation caused by the accidental shaking of the counterweight block. In other embodiments, other shapes of counterweight parts 60 can also be used, and the guide structure of the counterweight part 60 can be adaptively adjusted.

[0077] like Figure 6 As shown, the lifting door device further includes a guide mechanism 30, which includes a guide groove 31 and a guide block 32. The guide groove 31 is provided on the longitudinal beam 11, and the guide block 32 is fixed to the door body 20. The guide groove 31 extends along the movement direction of the door body 20. The guide block 32 is clamped in the guide groove 31 and can slide along the guide groove 31. The guide groove 31 is staggered with the door body 20 on the surface of the longitudinal beam 11, and the guide block 32 is connected to the inner surface of the door body 20. Specifically, the guide mechanism 30 of this embodiment is provided between the door body 20 and the longitudinal beam 11 of the door frame 10, and the guide groove 31 is provided on the side of the longitudinal beam 11 facing the door body 20, and the guide block 32 is connected to the door body 20 and clamped in the guide groove 31. In this embodiment, the guide groove 31 is arranged on the longitudinal beam 11 and staggered with the door body 20, so that the guide block 32 does not need to be arranged between the side of the door body 20 and the longitudinal beam 11, but can be directly arranged on the inner surface of the door body 20 so that it overlaps with the door body 20 in the length direction of the door body 20. Compared with the solution of directly setting the guide block 32 in the middle of the longitudinal beam 11 of the door frame and the door body 20, the overall width of the door frame 10 can be increased to a certain extent. In other embodiments, the setting positions of the guide groove 31 and the guide block 32 can also be exchanged, with the longitudinal beam 11 protruding outward to form a guide rail, and the door body 20 is provided with a groove structure to slide on the guide rail. In another other embodiment, the guide groove 31 and the guide block 32 may not be staggered with the door body 20, but are arranged on the same plane with the door body 20 and the longitudinal beam 11 and sandwiched between the door body 20 and the longitudinal beam 11.

[0078] like Figure 6 As shown, the guide block 32 is connected to the door body 20 through the connecting portion 21. The guide block 32 is arranged on the side of the door body 20 facing the battery compartment. The connecting portion 21 is L-shaped and has two vertical surfaces, one of which is connected to the back of the guide block 32, and the other is connected to the side of the door body 20 facing the battery compartment. The connecting portion 21 is detachably connected to the door body 20 through bolts. In order to avoid directly opening a hole on the door body 20 to affect the strength and airtightness of the door body 20, the door body 20 is additionally provided with a connecting piece welded to the door body 20 at both ends and protruding from the surface of the door body 20 in the middle. The middle protruding part of the connecting piece has a hole for bolt connection with the connecting portion 21.

[0079] like Figure 7As shown, a reinforcing portion 22 is provided inside the door body 20, and the reinforcing portion 22 is longitudinally arranged inside the door body 20 and supports the door body 20. A reinforcing plate 23 is provided at the bottom of the reinforcing portion 22, and one end of the reinforcing plate 23 is connected to the side of the reinforcing portion 22, and the other end of the reinforcing plate 23 is connected to the bottom surface of the door body 20. Specifically, the door body 20 is hollow inside to form a cavity 24, so that the door body 20 is lightened and the driving force requirement of the driving mechanism 50 is reduced. The reinforcing portion 22 is a protruding structure arranged in the cavity 24 and filling the cavity 24 in the longitudinal direction, which is used to compensate for the strength of the door body 20. In this embodiment, the reinforcing portion 22 protrudes in the thickness direction of the door body 20, and the door body 20 also protrudes outward at the position corresponding to the reinforcing portion 22 to form a protruding portion 241 with a thickness greater than that of other positions of the door body 20, thereby leaving more space for the reinforcing portion 22 in the thickness direction of the door body 20. The reinforcing plate is arranged in the protruding portion 241, one end of which is connected to the reinforcing portion 22, and the other end is connected to the bottom surface of the cavity 24. The reinforcement part 22 is disposed inside the door body 20 to longitudinally support the door body 20 , and the reinforcement plate 23 further strengthens the end of the reinforcement part 22 , thereby strengthening the strength of the door body 20 as a whole.

[0080] 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 includes: a door frame, a door body, a driving mechanism, a transmission mechanism and a counterweight part; The door body can be lifted and moved in the door frame, the transmission mechanism is connected between the door body and the counterweight part, the drive mechanism is arranged above the door body and connected to the transmission mechanism, and the drive mechanism drives the door body to move up and down in the vertical direction.

2. The lifting door device according to claim 1, characterized in that: The transmission mechanism includes a chain and two gears, the two gears are respectively arranged above the center position of the lifting and lowering movement of the door body and the counterweight part, the chain is meshed with the two gears and extends to be connected to the door body and the counterweight part, and the driving mechanism is connected to the area of ​​the chain located between the two gears.

3. The lifting door device according to claim 2, characterized in that: The door frame includes two longitudinal beams, a cross beam connecting the two longitudinal beams by a top surface, and a mounting rod arranged parallel to the cross beam and higher than the highest position of the door body. The mounting rod is used to install the driving mechanism and the gear located above the door body.

4. The lifting door device according to claim 3, characterized in that: The longitudinal beam in the door frame close to the counterweight part is provided with a mounting frame extending outward, and the mounting frame is used for mounting the gear corresponding to the counterweight part.

5. The lifting door device according to claim 3, characterized in that: The mounting rod is provided with a first guide rail and a first slider slidably matched with the first guide rail on one side facing the chain. The chain is fixed on the first slider. The power output end of the driving mechanism is connected to the first slider, thereby driving the door body to move up and down.

6. The lifting door device according to claim 1, characterized in that: The driving mechanism comprises an electric push rod which can be extended and retracted in a horizontal direction, wherein the extended end of the electric push rod is a power output end and is connected to the transmission mechanism.

7. The lifting door device according to claim 1, characterized in that: The counterweight portion is cylindrical; and / or, The weight of the counterweight is the same as the weight of the door body.

8. The lifting door device according to claim 1, characterized in that: The counterweight part is also provided with a counterweight guide part, the counterweight guide part is fixed to the door frame, the counterweight guide part extends in a vertical direction, and the counterweight part is movably connected to the counterweight guide part and moves along the extension direction of the counterweight guide part.

9. The lifting door device according to claim 8, characterized in that: The counterweight part is provided with a through hole, the counterweight guide part comprises a guide column, and the counterweight part is penetrated on the guide column through the through hole.

10. The lifting door device according to claim 3, characterized in that: It also includes a guide mechanism, which includes a guide groove and a guide block, the guide groove is arranged on the longitudinal beam, the guide block is fixed to the door body, the guide groove extends along the movement direction of the door body, the guide block is clamped in the guide groove and can slide along the guide groove, the guide groove is staggered on the surface of the longitudinal beam and the door body, and the guide block is connected to the inner surface of the door body.

11. The lifting door device according to claim 1, characterized in that: A reinforcing portion is provided in the door body, the reinforcing portion is longitudinally arranged inside the door body and supports the door body, a reinforcing plate is provided at the bottom of the reinforcing portion, one end of the reinforcing plate is connected to the side surface of the reinforcing portion, and the other end of the reinforcing plate is connected to the bottom surface of the door body.

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

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